diff --git a/audio/6.0/config/api/current.txt b/audio/6.0/config/api/current.txt
index 431bc90..ddd4d1c 100644
--- a/audio/6.0/config/api/current.txt
+++ b/audio/6.0/config/api/current.txt
@@ -252,7 +252,9 @@
 
   public class GlobalConfiguration {
     ctor public GlobalConfiguration();
+    method public boolean getCall_screen_mode_supported();
     method public boolean getSpeaker_drc_enabled();
+    method public void setCall_screen_mode_supported(boolean);
     method public void setSpeaker_drc_enabled(boolean);
   }
 
diff --git a/audio/6.0/config/audio_policy_configuration.xsd b/audio/6.0/config/audio_policy_configuration.xsd
index d0f80ea..3fab7dc 100644
--- a/audio/6.0/config/audio_policy_configuration.xsd
+++ b/audio/6.0/config/audio_policy_configuration.xsd
@@ -66,6 +66,7 @@
     </xs:element>
     <xs:complexType name="globalConfiguration">
         <xs:attribute name="speaker_drc_enabled" type="xs:boolean" use="required"/>
+        <xs:attribute name="call_screen_mode_supported" type="xs:boolean" use="optional"/>
     </xs:complexType>
     <xs:complexType name="modules">
         <xs:annotation>
diff --git a/audio/README b/audio/README
index abe979c..afafbe3 100644
--- a/audio/README
+++ b/audio/README
@@ -1,5 +1,8 @@
 Directory structure of the audio HIDL related code.
 
+Run `common/all-versions/copyHAL.sh` to create a new version of the audio HAL
+based on an existing one.
+
 audio
 |-- 2.0              <== core 2.0 HIDL API. .hal can not be moved into the core directory
 |                        because that would change its namespace and include path
@@ -11,13 +14,13 @@
 |   |-- 2.0          <== HIDL API of V2
 |   |-- 4.0
 |   |-- ...
-|   `-- all_versions <== code common to all version of both core and effect API
+|   `-- all-versions <== code common to all version of both core and effect API
 |       |-- default  <== implementation shared code between core and effect impl
 |       |-- test     <== utilities used by tests
 |       `-- util     <== utilities used by both implementation and tests
 |
 |-- core             <== VTS and default implementation of the core API (not HIDL, see /audio/2.0))
-|   `-- all_versions <== Code is version independent through #if and separate files
+|   `-- all-versions <== Code is version independent through #if and separate files
 |       |-- default  <== code that wraps the legacy API
 |       `-- vts      <== vts of core API
 |           |-- 2.0  <== 2.0 specific tests and helpers
@@ -28,6 +31,6 @@
     |-- 2.0
     |-- 4.0
     |-- ...
-    `-- all_versions
+    `-- all-versions
         |-- default
         `-- vts
diff --git a/audio/common/6.0/types.hal b/audio/common/6.0/types.hal
index 132f86d..0c97c36 100644
--- a/audio/common/6.0/types.hal
+++ b/audio/common/6.0/types.hal
@@ -556,6 +556,8 @@
     IN_CALL          = 2,
     /** Calls handled by apps (Eg: Hangout). */
     IN_COMMUNICATION = 3,
+    /** Call screening in progress */
+    CALL_SCREEN      = 4,
 };
 
 @export(name="", value_prefix="AUDIO_DEVICE_")
diff --git a/audio/core/all-versions/default/Android.bp b/audio/core/all-versions/default/Android.bp
index 007ad85..b8b7fee 100644
--- a/audio/core/all-versions/default/Android.bp
+++ b/audio/core/all-versions/default/Android.bp
@@ -19,12 +19,14 @@
     export_include_dirs: ["include"],
 
     shared_libs: [
+        "libaudiofoundation",
         "libbase",
         "libcutils",
         "libfmq",
         "libhardware",
         "libhidlbase",
         "liblog",
+        "libmedia_helper",
         "libutils",
         "android.hardware.audio.common-util",
     ],
@@ -36,10 +38,6 @@
         "libhardware_headers",
         "libmedia_headers",
     ],
-
-    whole_static_libs: [
-        "libmedia_helper",
-    ],
 }
 
 cc_library_shared {
diff --git a/audio/core/all-versions/default/Stream.cpp b/audio/core/all-versions/default/Stream.cpp
index 5f24a5d..74e5945 100644
--- a/audio/core/all-versions/default/Stream.cpp
+++ b/audio/core/all-versions/default/Stream.cpp
@@ -26,9 +26,8 @@
 #include <android/log.h>
 #include <hardware/audio.h>
 #include <hardware/audio_effect.h>
+#include <media/AudioContainers.h>
 #include <media/TypeConverter.h>
-#include <utils/SortedVector.h>
-#include <utils/Vector.h>
 
 namespace android {
 namespace hardware {
@@ -100,11 +99,11 @@
     Result result =
         getParam(AudioParameter::keyStreamSupportedSamplingRates, &halListValue, context);
     hidl_vec<uint32_t> sampleRates;
-    SortedVector<uint32_t> halSampleRates;
+    SampleRateSet halSampleRates;
     if (result == Result::OK) {
         halSampleRates =
             samplingRatesFromString(halListValue.string(), AudioParameter::valueListSeparator);
-        sampleRates.setToExternal(halSampleRates.editArray(), halSampleRates.size());
+        sampleRates = hidl_vec<uint32_t>(halSampleRates.begin(), halSampleRates.end());
         // Legacy get_parameter does not return a status_t, thus can not advertise of failure.
         // Note that this method must succeed (non empty list) if the format is supported.
         if (sampleRates.size() == 0) {
@@ -126,13 +125,14 @@
     String8 halListValue;
     Result result = getParam(AudioParameter::keyStreamSupportedChannels, &halListValue, context);
     hidl_vec<AudioChannelBitfield> channelMasks;
-    SortedVector<audio_channel_mask_t> halChannelMasks;
+    ChannelMaskSet halChannelMasks;
     if (result == Result::OK) {
         halChannelMasks =
             channelMasksFromString(halListValue.string(), AudioParameter::valueListSeparator);
         channelMasks.resize(halChannelMasks.size());
-        for (size_t i = 0; i < halChannelMasks.size(); ++i) {
-            channelMasks[i] = AudioChannelBitfield(halChannelMasks[i]);
+        size_t i = 0;
+        for (auto channelMask : halChannelMasks) {
+            channelMasks[i++] = AudioChannelBitfield(channelMask);
         }
         // Legacy get_parameter does not return a status_t, thus can not advertise of failure.
         // Note that this method must succeed (non empty list) if the format is supported.
@@ -168,7 +168,7 @@
     String8 halListValue;
     Result result = getParam(AudioParameter::keyStreamSupportedFormats, &halListValue);
     hidl_vec<AudioFormat> formats;
-    Vector<audio_format_t> halFormats;
+    FormatVector halFormats;
     if (result == Result::OK) {
         halFormats = formatsFromString(halListValue.string(), AudioParameter::valueListSeparator);
         formats.resize(halFormats.size());
diff --git a/audio/core/all-versions/vts/functional/Android.bp b/audio/core/all-versions/vts/functional/Android.bp
index 3286ecb..1818e36 100644
--- a/audio/core/all-versions/vts/functional/Android.bp
+++ b/audio/core/all-versions/vts/functional/Android.bp
@@ -19,11 +19,13 @@
     defaults: ["VtsHalTargetTestDefaults"],
     static_libs: [
         "android.hardware.audio.common.test.utility",
+        "libaudiofoundation",
         "libaudiopolicycomponents",
         "libmedia_helper",
         "libxml2",
     ],
     shared_libs: [
+        "libbinder",
         "libfmq",
     ],
     header_libs: [
diff --git a/automotive/OWNERS b/automotive/OWNERS
index 3cf4489..83ee63c 100644
--- a/automotive/OWNERS
+++ b/automotive/OWNERS
@@ -1,4 +1,5 @@
-randolphs@google.com
 pirozzoj@google.com
 twasilczyk@google.com
 pfg@google.com
+gurunagarajan@google.com
+keunyoung@google.com
diff --git a/automotive/audiocontrol/1.0/IAudioControl.hal b/automotive/audiocontrol/1.0/IAudioControl.hal
index 3c8b086..2e7ef75 100644
--- a/automotive/audiocontrol/1.0/IAudioControl.hal
+++ b/automotive/audiocontrol/1.0/IAudioControl.hal
@@ -29,6 +29,11 @@
      *
      * For every context, a valid bus number (0 - num busses-1) must be returned. If an
      * unrecognized contextNumber is encountered, then -1 shall be returned.
+     *
+     * Deprecated: usage of this API and car_volume_groups.xml has been replaced with
+     * car_audio_configuration.xml. If using car_audio_configuration.xml, then the framework
+     * will not call this method. If it doesn't, then it will load car_volume_groups.xml and
+     * call this method.
      */
     getBusForContext(ContextNumber contextNumber)
         generates (int32_t busNumber);
diff --git a/automotive/can/1.0/Android.bp b/automotive/can/1.0/Android.bp
new file mode 100644
index 0000000..2221e66
--- /dev/null
+++ b/automotive/can/1.0/Android.bp
@@ -0,0 +1,21 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.automotive.can@1.0",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "ICanBus.hal",
+        "ICanController.hal",
+        "ICanErrorListener.hal",
+        "ICanMessageListener.hal",
+        "ICloseHandle.hal",
+    ],
+    interfaces: [
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
diff --git a/automotive/can/1.0/ICanBus.hal b/automotive/can/1.0/ICanBus.hal
new file mode 100644
index 0000000..e68f16c
--- /dev/null
+++ b/automotive/can/1.0/ICanBus.hal
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.automotive.can@1.0;
+
+import ICanErrorListener;
+import ICanMessageListener;
+import ICloseHandle;
+
+/**
+ * Represents a CAN bus interface that's up and configured.
+ *
+ * Configuration part is done in ICanController.
+ */
+interface ICanBus {
+    /**
+     * Send CAN message.
+     *
+     * @param message CAN message to send out
+     * @return result OK in the case of success
+     *                PAYLOAD_TOO_LONG if the payload is too long
+     *                INTERFACE_DOWN if the bus is down
+     *                TRANSMISSION_FAILURE in case of transmission failure
+     */
+    send(CanMessage message) generates (Result result);
+
+    /**
+     * Requests HAL implementation to listen for specific CAN messages.
+     *
+     * HAL is responsible for maintaining listener set and sending out messages
+     * to each listener that matches given filter against received message.
+     *
+     * Empty filter list means no filtering. If two or more listeners requested
+     * different filters, HAL server must merge these to fulfill the superset of
+     * these filters. HAL must not send out a message to a listener which filter
+     * doesn't match given message id.
+     *
+     * If filtering is not supported at the hardware level (what's strongly
+     * recommended), it must be covered in the HAL.
+     *
+     * @param filter The set of requested filters
+     * @param listener The interface to receive the messages on
+     * @return result OK in the case of success
+     *                INTERFACE_DOWN if the bus is down
+     * @return close A handle to call in order to remove the listener
+     */
+    listen(vec<CanMessageFilter> filter, ICanMessageListener listener)
+            generates (Result result, ICloseHandle close);
+
+    /**
+     * Adds a new listener for CAN bus or interface errors.
+     *
+     * If the error is fatal, the client is supposed to drop any references to
+     * this specific ICanBus instance (see ICanErrorListener).
+     *
+     * @param listener The interface to receive the error events on
+     * @return close A handle to call in order to remove the listener
+     */
+    listenForErrors(ICanErrorListener listener) generates (ICloseHandle close);
+};
diff --git a/automotive/can/1.0/ICanController.hal b/automotive/can/1.0/ICanController.hal
new file mode 100644
index 0000000..2c7494a
--- /dev/null
+++ b/automotive/can/1.0/ICanController.hal
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.automotive.can@1.0;
+
+/**
+ * Represents a CAN controller that's capable of configuring CAN bus interfaces.
+ *
+ * The goal of this service is to configure CAN interfaces and bring up HIDL
+ * server instances of ICanBus for each one that's up.
+ *
+ * Providing an ICanController interface to configure CAN buses is optional.
+ * A system can elect to publish only ICanBus if the hardware is hardcoded
+ * for a specific application.
+ */
+interface ICanController {
+    /**
+     * Type of an interface, a mean to express the domain of device address.
+     */
+    enum InterfaceType : uint8_t {
+        /**
+         * Virtual SocketCAN interface.
+         *
+         * The address is an interface name, such as vcan0. If the interface
+         * doesn't exist, HAL server must create it.
+         *
+         * Valid InterfaceIdentifier types:
+         *  - address.
+         */
+        VIRTUAL,
+
+        /**
+         * Native SocketCAN interface.
+         *
+         * The address is an interface name, such as can0.
+         *
+         * Valid InterfaceIdentifier types:
+         *  - address;
+         *  - serialno.
+         */
+        SOCKETCAN,
+
+        /**
+         * Serial-based interface.
+         *
+         * The address is a patch to a device, such as /dev/ttyUSB0.
+         *
+         * Valid InterfaceIdentifier types:
+         *  - address;
+         *  - serialno.
+         */
+        SLCAN,
+
+        /**
+         * Proprietary interface, specific to the hardware system Android
+         * is running on. Instead of using address field, the interface is
+         * addressed with 0-based index.
+         *
+         * Valid InterfaceIdentifier types:
+         *  - index
+         */
+        INDEXED
+    };
+
+    enum Result : uint8_t {
+        OK,
+
+        /**
+         * General error class, if others are not applicable.
+         */
+        UNKNOWN_ERROR,
+
+        /**
+         * Up request was called out of order (i.e. trying to up the
+         * interface twice).
+         */
+        INVALID_STATE,
+
+        /** Interface type is not supported. */
+        NOT_SUPPORTED,
+
+        /**
+         * Provided address (interface name, device path) doesn't exist or there
+         * is no device with a given serial no.
+         */
+        BAD_ADDRESS,
+
+        /** Provided baud rate is not supported by the hardware. */
+        BAD_BAUDRATE,
+    };
+
+    /**
+     * Configuration of the (physical or virtual) CAN bus.
+     *
+     * ISO TP and CAN FD are currently not supported.
+     */
+    struct BusConfiguration {
+        /**
+         * Name under which ICanBus HIDL service should be published.
+         *
+         * It must consist of only alphanumeric characters and underscore
+         * (a-z, A-Z, 0-9, '_'), at least 1 and at most 32 characters long.
+         */
+        string name;
+
+        /**
+         * Type of the hardware (or virtual) CAN interface.
+         */
+        InterfaceType iftype;
+
+        /**
+         * Identification of hardware interface to configure.
+         */
+        safe_union InterfaceIdentifier {
+            /**
+             * Interface name or other mean of identification of the specific
+             * interface port. Syntax depends on {@see iftype}, for details
+             * {@see InterfaceType}.
+             */
+            string address;
+
+            /**
+             * Numerical identifier of interface, used for InterfaceType#INDEXED.
+             */
+            uint8_t index;
+
+            /**
+             * Alternatively to providing {@see address}, one may provide a list
+             * of interface serial number suffixes. If there happens to be
+             * a device (like USB2CAN) with a matching serial number suffix,
+             * it gets selected.
+             *
+             * Client may utilize this in two ways: by matching against the
+             * entire serial number, or the last few characters (usually one).
+             * The former is better for small-scale test deployments (with just
+             * a handful of vehicles), the latter is good for larger scale
+             * (where a small suffix list may support large test fleet).
+             */
+            vec<string> serialno;
+        } interfaceId;
+
+        /**
+         * Baud rate for CAN communication.
+         *
+         * Typical baud rates are: 100000, 125000, 250000, 500000.
+         *
+         * For virtual interfaces this value is ignored.
+         */
+        uint32_t baudrate;
+    };
+
+    /**
+     * Fetches the list of interface types supported by this HAL server.
+     *
+     * @return iftypes The list of supported interface types
+     */
+    getSupportedInterfaceTypes() generates (vec<InterfaceType> iftypes);
+
+    /**
+     * Bring up the CAN interface and publish ICanBus server instance.
+     *
+     * @param config Configuration of the CAN interface
+     * @return result OK if the operation succeeded; error code otherwise.
+     */
+    upInterface(BusConfiguration config) generates (Result result);
+
+    /**
+     * Unpublish ICanBus server instance and bring down the CAN interface.
+     *
+     * In case of failure, at least the ICanBus server instance must be
+     * unpublished and resources freed on best-effort basis.
+     *
+     * @param name Name of the interface (@see BusConfiguration#name} to
+     * bring down
+     * @return success true in case of success, false otherwise
+     */
+    downInterface(string name) generates (bool success);
+};
diff --git a/automotive/can/1.0/ICanErrorListener.hal b/automotive/can/1.0/ICanErrorListener.hal
new file mode 100644
index 0000000..8a6ba05
--- /dev/null
+++ b/automotive/can/1.0/ICanErrorListener.hal
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.automotive.can@1.0;
+
+/**
+ * CAN error listener.
+ */
+interface ICanErrorListener {
+    /**
+     * Called on error event.
+     *
+     * If the error is fatal, the client is supposed to drop any references to
+     * this specific ICanBus instance.
+     *
+     * @param error Error type
+     * @param isFatal Whether an error would result with ICanBus instance being unusable.
+     */
+    onError(ErrorEvent error, bool isFatal);
+};
diff --git a/automotive/can/1.0/ICanMessageListener.hal b/automotive/can/1.0/ICanMessageListener.hal
new file mode 100644
index 0000000..28161fa
--- /dev/null
+++ b/automotive/can/1.0/ICanMessageListener.hal
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.automotive.can@1.0;
+
+/**
+ * CAN message listener.
+ */
+interface ICanMessageListener {
+    /**
+     * Called on received CAN message.
+     *
+     * The timestamp field of message struct is set to time when the message
+     * was received by the hardware. If it's not possible to fetch exact
+     * hardware time, this field should be set as early as possible to decrease
+     * potential time delta.
+     *
+     * @param message Received CAN message
+     */
+    onReceive(CanMessage message);
+};
diff --git a/automotive/can/1.0/ICloseHandle.hal b/automotive/can/1.0/ICloseHandle.hal
new file mode 100644
index 0000000..924c58b
--- /dev/null
+++ b/automotive/can/1.0/ICloseHandle.hal
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.automotive.can@1.0;
+
+/**
+ * Represents a generic close handle to remove a callback that doesn't need
+ * active interface.
+ *
+ * When close() is called OR when the interface is released, the underlying
+ * resources must be freed.
+ */
+interface ICloseHandle {
+    /**
+     * Closes the handle.
+     *
+     * The call must not fail and must be issued by the client at most once.
+     * Otherwise, the server must ignore subsequent calls.
+     */
+    close();
+};
diff --git a/automotive/can/1.0/default/Android.bp b/automotive/can/1.0/default/Android.bp
new file mode 100644
index 0000000..ee2e92b
--- /dev/null
+++ b/automotive/can/1.0/default/Android.bp
@@ -0,0 +1,55 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_defaults {
+    name: "android.hardware.automotive.can@defaults",
+    cpp_std: "experimental",
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Werror",
+        "-DANDROID_BASE_UNIQUE_FD_DISABLE_IMPLICIT_CONVERSION=1",
+    ],
+    shared_libs: [
+        "libbase",
+        "libutils",
+    ],
+}
+
+cc_binary {
+    name: "android.hardware.automotive.can@1.0-service",
+    init_rc: ["android.hardware.automotive.can@1.0-service.rc"],
+    defaults: ["android.hardware.automotive.can@defaults"],
+    vendor: true,
+    relative_install_path: "hw",
+    srcs: [
+        "CanBus.cpp",
+        "CanBusNative.cpp",
+        "CanBusVirtual.cpp",
+        "CanBusSlcan.cpp",
+        "CanController.cpp",
+        "CanSocket.cpp",
+        "CloseHandle.cpp",
+        "service.cpp",
+    ],
+    shared_libs: [
+        "android.hardware.automotive.can@1.0",
+        "libhidlbase",
+    ],
+    static_libs: [
+        "android.hardware.automotive.can@libnetdevice",
+    ],
+}
diff --git a/automotive/can/1.0/default/CanBus.cpp b/automotive/can/1.0/default/CanBus.cpp
new file mode 100644
index 0000000..42d2e3c
--- /dev/null
+++ b/automotive/can/1.0/default/CanBus.cpp
@@ -0,0 +1,296 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CanBus.h"
+
+#include "CloseHandle.h"
+
+#include <android-base/logging.h>
+#include <libnetdevice/can.h>
+#include <libnetdevice/libnetdevice.h>
+#include <linux/can.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace implementation {
+
+/** Whether to log sent/received packets. */
+static constexpr bool kSuperVerbose = false;
+
+Return<Result> CanBus::send(const CanMessage& message) {
+    std::lock_guard<std::mutex> lck(mIsUpGuard);
+    if (!mIsUp) return Result::INTERFACE_DOWN;
+
+    if (UNLIKELY(kSuperVerbose)) {
+        LOG(VERBOSE) << "Sending " << toString(message);
+    }
+
+    if (message.payload.size() > CAN_MAX_DLEN) return Result::PAYLOAD_TOO_LONG;
+
+    struct canfd_frame frame = {};
+    frame.can_id = message.id;
+    frame.len = message.payload.size();
+    memcpy(frame.data, message.payload.data(), message.payload.size());
+
+    if (!mSocket->send(frame)) return Result::TRANSMISSION_FAILURE;
+
+    return Result::OK;
+}
+
+Return<void> CanBus::listen(const hidl_vec<CanMessageFilter>& filter,
+                            const sp<ICanMessageListener>& listenerCb, listen_cb _hidl_cb) {
+    std::lock_guard<std::mutex> lck(mIsUpGuard);
+
+    if (listenerCb == nullptr) {
+        _hidl_cb(Result::INVALID_ARGUMENTS, nullptr);
+        return {};
+    }
+    if (!mIsUp) {
+        _hidl_cb(Result::INTERFACE_DOWN, nullptr);
+        return {};
+    }
+
+    std::lock_guard<std::mutex> lckListeners(mMsgListenersGuard);
+
+    sp<CloseHandle> closeHandle = new CloseHandle([this, listenerCb]() {
+        std::lock_guard<std::mutex> lck(mMsgListenersGuard);
+        std::erase_if(mMsgListeners, [&](const auto& e) { return e.callback == listenerCb; });
+    });
+    mMsgListeners.emplace_back(CanMessageListener{listenerCb, filter, closeHandle});
+    auto& listener = mMsgListeners.back();
+
+    // fix message IDs to have all zeros on bits not covered by mask
+    std::for_each(listener.filter.begin(), listener.filter.end(),
+                  [](auto& rule) { rule.id &= rule.mask; });
+
+    _hidl_cb(Result::OK, closeHandle);
+    return {};
+}
+
+CanBus::CanBus() {}
+
+CanBus::CanBus(const std::string& ifname) : mIfname(ifname) {}
+
+CanBus::~CanBus() {
+    std::lock_guard<std::mutex> lck(mIsUpGuard);
+    CHECK(!mIsUp) << "Interface is still up while being destroyed";
+
+    std::lock_guard<std::mutex> lckListeners(mMsgListenersGuard);
+    CHECK(mMsgListeners.empty()) << "Listener list is not empty while interface is being destroyed";
+}
+
+void CanBus::setErrorCallback(ErrorCallback errcb) {
+    CHECK(!mIsUp) << "Can't set error callback while interface is up";
+    CHECK(mErrCb == nullptr) << "Error callback is already set";
+    mErrCb = errcb;
+    CHECK(!mIsUp) << "Can't set error callback while interface is up";
+}
+
+ICanController::Result CanBus::preUp() {
+    return ICanController::Result::OK;
+}
+
+bool CanBus::postDown() {
+    return true;
+}
+
+ICanController::Result CanBus::up() {
+    std::lock_guard<std::mutex> lck(mIsUpGuard);
+
+    if (mIsUp) {
+        LOG(WARNING) << "Interface is already up";
+        return ICanController::Result::INVALID_STATE;
+    }
+
+    const auto preResult = preUp();
+    if (preResult != ICanController::Result::OK) return preResult;
+
+    const auto isUp = netdevice::isUp(mIfname);
+    if (!isUp.has_value()) {
+        // preUp() should prepare the interface (either create or make sure it's there)
+        LOG(ERROR) << "Interface " << mIfname << " didn't get prepared";
+        return ICanController::Result::BAD_ADDRESS;
+    }
+
+    if (!*isUp && !netdevice::up(mIfname)) {
+        LOG(ERROR) << "Can't bring " << mIfname << " up";
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+    mDownAfterUse = !*isUp;
+
+    using namespace std::placeholders;
+    CanSocket::ReadCallback rdcb = std::bind(&CanBus::onRead, this, _1, _2);
+    CanSocket::ErrorCallback errcb = std::bind(&CanBus::onError, this, _1);
+    mSocket = CanSocket::open(mIfname, rdcb, errcb);
+    if (!mSocket) {
+        if (mDownAfterUse) netdevice::down(mIfname);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    mIsUp = true;
+    return ICanController::Result::OK;
+}
+
+void CanBus::clearMsgListeners() {
+    std::vector<wp<ICloseHandle>> listenersToClose;
+    {
+        std::lock_guard<std::mutex> lck(mMsgListenersGuard);
+        std::transform(mMsgListeners.begin(), mMsgListeners.end(),
+                       std::back_inserter(listenersToClose),
+                       [](const auto& e) { return e.closeHandle; });
+    }
+
+    for (auto& weakListener : listenersToClose) {
+        /* Between populating listenersToClose and calling close method here, some listeners might
+         * have been already removed from the original mMsgListeners list (resulting in a dangling
+         * weak pointer here). It's fine - we just want to clean them up. */
+        auto listener = weakListener.promote();
+        if (listener != nullptr) listener->close();
+    }
+
+    std::lock_guard<std::mutex> lck(mMsgListenersGuard);
+    CHECK(mMsgListeners.empty()) << "Listeners list wasn't emptied";
+}
+
+void CanBus::clearErrListeners() {
+    std::lock_guard<std::mutex> lck(mErrListenersGuard);
+    mErrListeners.clear();
+}
+
+Return<sp<ICloseHandle>> CanBus::listenForErrors(const sp<ICanErrorListener>& listener) {
+    if (listener == nullptr) {
+        return new CloseHandle();
+    }
+
+    std::lock_guard<std::mutex> upLck(mIsUpGuard);
+    if (!mIsUp) {
+        listener->onError(ErrorEvent::INTERFACE_DOWN, true);
+        return new CloseHandle();
+    }
+
+    std::lock_guard<std::mutex> errLck(mErrListenersGuard);
+    mErrListeners.emplace_back(listener);
+
+    return new CloseHandle([this, listener]() {
+        std::lock_guard<std::mutex> lck(mErrListenersGuard);
+        std::erase(mErrListeners, listener);
+    });
+}
+
+bool CanBus::down() {
+    std::lock_guard<std::mutex> lck(mIsUpGuard);
+
+    if (!mIsUp) {
+        LOG(WARNING) << "Interface is already down";
+        return false;
+    }
+    mIsUp = false;
+
+    clearMsgListeners();
+    clearErrListeners();
+    mSocket.reset();
+
+    bool success = true;
+
+    if (mDownAfterUse && !netdevice::down(mIfname)) {
+        LOG(ERROR) << "Can't bring " << mIfname << " down";
+        // don't return yet, let's try to do best-effort cleanup
+        success = false;
+    }
+
+    if (!postDown()) success = false;
+
+    return success;
+}
+
+/**
+ * Match the filter set against message id.
+ *
+ * For details on the filters syntax, please see CanMessageFilter at
+ * the HAL definition (types.hal).
+ *
+ * \param filter Filter to match against
+ * \param id Message id to filter
+ * \return true if the message id matches the filter, false otherwise
+ */
+static bool match(const hidl_vec<CanMessageFilter>& filter, CanMessageId id) {
+    if (filter.size() == 0) return true;
+
+    bool anyNonInvertedPresent = false;
+    bool anyNonInvertedSatisfied = false;
+    for (auto& rule : filter) {
+        const bool satisfied = ((id & rule.mask) == rule.id) == !rule.inverted;
+        if (rule.inverted) {
+            // Any inverted (blacklist) rule not being satisfied invalidates the whole filter set.
+            if (!satisfied) return false;
+        } else {
+            anyNonInvertedPresent = true;
+            if (satisfied) anyNonInvertedSatisfied = true;
+        }
+    }
+    return !anyNonInvertedPresent || anyNonInvertedSatisfied;
+}
+
+void CanBus::onRead(const struct canfd_frame& frame, std::chrono::nanoseconds timestamp) {
+    CanMessage message = {};
+    message.id = frame.can_id;
+    message.payload = hidl_vec<uint8_t>(frame.data, frame.data + frame.len);
+    message.timestamp = timestamp.count();
+
+    if (UNLIKELY(kSuperVerbose)) {
+        LOG(VERBOSE) << "Got message " << toString(message);
+    }
+
+    std::lock_guard<std::mutex> lck(mMsgListenersGuard);
+    for (auto& listener : mMsgListeners) {
+        if (!match(listener.filter, message.id)) continue;
+        if (!listener.callback->onReceive(message).isOk() && !listener.failedOnce) {
+            listener.failedOnce = true;
+            LOG(WARNING) << "Failed to notify listener about message";
+        }
+    }
+}
+
+void CanBus::onError(int errnoVal) {
+    auto eventType = ErrorEvent::HARDWARE_ERROR;
+
+    if (errnoVal == ENODEV || errnoVal == ENETDOWN) {
+        mDownAfterUse = false;
+        eventType = ErrorEvent::INTERFACE_DOWN;
+    }
+
+    {
+        std::lock_guard<std::mutex> lck(mErrListenersGuard);
+        for (auto& listener : mErrListeners) {
+            if (!listener->onError(eventType, true).isOk()) {
+                LOG(WARNING) << "Failed to notify listener about error";
+            }
+        }
+    }
+
+    const auto errcb = mErrCb;
+    if (errcb != nullptr) errcb();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/can/1.0/default/CanBus.h b/automotive/can/1.0/default/CanBus.h
new file mode 100644
index 0000000..365e90c
--- /dev/null
+++ b/automotive/can/1.0/default/CanBus.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "CanSocket.h"
+
+#include <android-base/unique_fd.h>
+#include <android/hardware/automotive/can/1.0/ICanBus.h>
+#include <android/hardware/automotive/can/1.0/ICanController.h>
+#include <utils/Mutex.h>
+
+#include <atomic>
+#include <thread>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace implementation {
+
+struct CanBus : public ICanBus {
+    using ErrorCallback = std::function<void()>;
+
+    virtual ~CanBus();
+
+    Return<Result> send(const CanMessage& message) override;
+    Return<void> listen(const hidl_vec<CanMessageFilter>& filter,
+                        const sp<ICanMessageListener>& listener, listen_cb _hidl_cb) override;
+    Return<sp<ICloseHandle>> listenForErrors(const sp<ICanErrorListener>& listener) override;
+
+    void setErrorCallback(ErrorCallback errcb);
+    ICanController::Result up();
+    bool down();
+
+  protected:
+    /**
+     * Blank constructor, since some interface types (such as SLCAN) don't get a name until after
+     * being initialized.
+     *
+     * If using this constructor, you MUST initialize mIfname prior to the completion of preUp().
+     */
+    CanBus();
+
+    CanBus(const std::string& ifname);
+
+    /**
+     * Prepare the SocketCAN interface.
+     *
+     * After calling this method, mIfname network interface is available and ready to be brought up.
+     *
+     * \return OK on success, or an error state on failure. See ICanController::Result
+     */
+    virtual ICanController::Result preUp();
+
+    /**
+     * Cleanup after bringing the interface down.
+     *
+     * This is a counterpart to preUp().
+     *
+     * \return true upon success and false upon failure
+     */
+    virtual bool postDown();
+
+    /** Network interface name. */
+    std::string mIfname;
+
+  private:
+    struct CanMessageListener {
+        sp<ICanMessageListener> callback;
+        hidl_vec<CanMessageFilter> filter;
+        wp<ICloseHandle> closeHandle;
+        bool failedOnce = false;
+    };
+    void clearMsgListeners();
+    void clearErrListeners();
+
+    void onRead(const struct canfd_frame& frame, std::chrono::nanoseconds timestamp);
+    void onError(int errnoVal);
+
+    std::mutex mMsgListenersGuard;
+    std::vector<CanMessageListener> mMsgListeners GUARDED_BY(mMsgListenersGuard);
+
+    std::mutex mErrListenersGuard;
+    std::vector<sp<ICanErrorListener>> mErrListeners GUARDED_BY(mErrListenersGuard);
+
+    std::unique_ptr<CanSocket> mSocket;
+    bool mDownAfterUse;
+
+    /**
+     * Guard for up flag is required to be held for entire time when the interface is being used
+     * (i.e. message being sent), because we don't want the interface to be torn down while
+     * executing that operation.
+     */
+    std::mutex mIsUpGuard;
+    bool mIsUp GUARDED_BY(mIsUpGuard) = false;
+
+    ErrorCallback mErrCb;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/can/1.0/default/CanBusNative.cpp b/automotive/can/1.0/default/CanBusNative.cpp
new file mode 100644
index 0000000..365b749
--- /dev/null
+++ b/automotive/can/1.0/default/CanBusNative.cpp
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CanBusNative.h"
+
+#include <android-base/logging.h>
+#include <libnetdevice/can.h>
+#include <libnetdevice/libnetdevice.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace implementation {
+
+CanBusNative::CanBusNative(const std::string& ifname, uint32_t baudrate)
+    : CanBus(ifname), mBaudrate(baudrate) {}
+
+ICanController::Result CanBusNative::preUp() {
+    if (!netdevice::exists(mIfname)) {
+        LOG(ERROR) << "Interface " << mIfname << " doesn't exist";
+        return ICanController::Result::BAD_ADDRESS;
+    }
+
+    if (!netdevice::down(mIfname)) {
+        LOG(ERROR) << "Can't bring " << mIfname << " down (to configure it)";
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    if (!netdevice::can::setBitrate(mIfname, mBaudrate)) {
+        LOG(ERROR) << "Can't set bitrate " << mBaudrate << " for " << mIfname;
+        return ICanController::Result::BAD_BAUDRATE;
+    }
+
+    return ICanController::Result::OK;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.3/default/wifi_legacy_hal_stubs.h b/automotive/can/1.0/default/CanBusNative.h
similarity index 62%
copy from wifi/1.3/default/wifi_legacy_hal_stubs.h
copy to automotive/can/1.0/default/CanBusNative.h
index 64854e0..126f1cb 100644
--- a/wifi/1.3/default/wifi_legacy_hal_stubs.h
+++ b/automotive/can/1.0/default/CanBusNative.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2019 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,23 +14,30 @@
  * limitations under the License.
  */
 
-#ifndef WIFI_LEGACY_HAL_STUBS_H_
-#define WIFI_LEGACY_HAL_STUBS_H_
+#pragma once
+
+#include "CanBus.h"
 
 namespace android {
 namespace hardware {
-namespace wifi {
-namespace V1_3 {
+namespace automotive {
+namespace can {
+namespace V1_0 {
 namespace implementation {
-namespace legacy_hal {
-#include <hardware_legacy/wifi_hal.h>
 
-bool initHalFuncTableWithStubs(wifi_hal_fn* hal_fn);
-}  // namespace legacy_hal
+struct CanBusNative : public CanBus {
+    CanBusNative(const std::string& ifname, uint32_t baudrate);
+
+  protected:
+    virtual ICanController::Result preUp() override;
+
+  private:
+    const uint32_t mBaudrate;
+};
+
 }  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
 }  // namespace hardware
 }  // namespace android
-
-#endif  // WIFI_LEGACY_HAL_STUBS_H_
diff --git a/automotive/can/1.0/default/CanBusSlcan.cpp b/automotive/can/1.0/default/CanBusSlcan.cpp
new file mode 100644
index 0000000..7dce838
--- /dev/null
+++ b/automotive/can/1.0/default/CanBusSlcan.cpp
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CanBusSlcan.h"
+
+#include <android-base/logging.h>
+#include <libnetdevice/can.h>
+#include <libnetdevice/libnetdevice.h>
+
+#include <net/if.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <termios.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace implementation {
+
+namespace slcanprotocol {
+static const std::string kOpenCommand = "O\r";
+static const std::string kCloseCommand = "C\r";
+static constexpr int kSlcanDiscipline = N_SLCAN;
+static constexpr int kDefaultDiscipline = N_TTY;
+
+static const std::map<uint32_t, std::string> kBitrateCommands = {
+        {10000, "C\rS0\r"},  {20000, "C\rS1\r"},  {50000, "C\rS2\r"},
+        {100000, "C\rS3\r"}, {125000, "C\rS4\r"}, {250000, "C\rS5\r"},
+        {500000, "C\rS6\r"}, {800000, "C\rS7\r"}, {1000000, "C\rS8\r"}};
+}  // namespace slcanprotocol
+
+/**
+ * Serial Line CAN constructor
+ * \param string uartName - name of slcan device (e.x. /dev/ttyUSB0)
+ * \param uint32_t bitrate - speed of the CAN bus (125k = MSCAN, 500k = HSCAN)
+ */
+CanBusSlcan::CanBusSlcan(const std::string& uartName, uint32_t bitrate)
+    : CanBus(), mUartName(uartName), kBitrate(bitrate) {}
+
+ICanController::Result CanBusSlcan::preUp() {
+    // verify valid bitrate and translate to serial command format
+    const auto lookupIt = slcanprotocol::kBitrateCommands.find(kBitrate);
+    if (lookupIt == slcanprotocol::kBitrateCommands.end()) {
+        return ICanController::Result::BAD_BAUDRATE;
+    }
+    const auto canBitrateCommand = lookupIt->second;
+
+    /* Attempt to open the uart in r/w without blocking or becoming the
+     * controlling terminal */
+    mFd = base::unique_fd(open(mUartName.c_str(), O_RDWR | O_NONBLOCK | O_NOCTTY));
+    if (!mFd.ok()) {
+        LOG(ERROR) << "SLCAN Failed to open " << mUartName << ": " << strerror(errno);
+        return ICanController::Result::BAD_ADDRESS;
+    }
+
+    // blank terminal settings and pull them from the device
+    struct termios terminalSettings = {};
+    if (tcgetattr(mFd.get(), &terminalSettings) < 0) {
+        LOG(ERROR) << "Failed to read attrs of" << mUartName << ": " << strerror(errno);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    // change settings to raw mode
+    cfmakeraw(&terminalSettings);
+
+    // disable software flow control
+    terminalSettings.c_iflag &= ~IXOFF;
+    // enable hardware flow control
+    terminalSettings.c_cflag |= CRTSCTS;
+
+    struct serial_struct serialSettings;
+    // get serial settings
+    if (ioctl(mFd.get(), TIOCGSERIAL, &serialSettings) < 0) {
+        LOG(ERROR) << "Failed to read serial settings from " << mUartName << ": "
+                   << strerror(errno);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+    // set low latency mode
+    serialSettings.flags |= ASYNC_LOW_LATENCY;
+    // apply serial settings
+    if (ioctl(mFd.get(), TIOCSSERIAL, &serialSettings) < 0) {
+        LOG(ERROR) << "Failed to set low latency mode on " << mUartName << ": " << strerror(errno);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    /* TCSADRAIN applies settings after we finish writing the rest of our
+     * changes (as opposed to TCSANOW, which changes immediately) */
+    if (tcsetattr(mFd.get(), TCSADRAIN, &terminalSettings) < 0) {
+        LOG(ERROR) << "Failed to apply terminal settings to " << mUartName << ": "
+                   << strerror(errno);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    // apply speed setting for CAN
+    if (write(mFd.get(), canBitrateCommand.c_str(), canBitrateCommand.length()) <= 0) {
+        LOG(ERROR) << "Failed to apply CAN bitrate: " << strerror(errno);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    // set open flag TODO: also support listen only
+    if (write(mFd.get(), slcanprotocol::kOpenCommand.c_str(),
+              slcanprotocol::kOpenCommand.length()) <= 0) {
+        LOG(ERROR) << "Failed to set open flag: " << strerror(errno);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    // set line discipline to slcan
+    if (ioctl(mFd.get(), TIOCSETD, &slcanprotocol::kSlcanDiscipline) < 0) {
+        LOG(ERROR) << "Failed to set line discipline to slcan: " << strerror(errno);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    // get the name of the device we created
+    struct ifreq ifrequest = {};
+    if (ioctl(mFd.get(), SIOCGIFNAME, ifrequest.ifr_name) < 0) {
+        LOG(ERROR) << "Failed to get the name of the created device: " << strerror(errno);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    // Update the CanBus object with name that was assigned to it
+    mIfname = ifrequest.ifr_name;
+
+    return ICanController::Result::OK;
+}
+
+bool CanBusSlcan::postDown() {
+    // reset the line discipline to TTY mode
+    if (ioctl(mFd.get(), TIOCSETD, &slcanprotocol::kDefaultDiscipline) < 0) {
+        LOG(ERROR) << "Failed to reset line discipline!";
+        return false;
+    }
+
+    // issue the close command
+    if (write(mFd.get(), slcanprotocol::kCloseCommand.c_str(),
+              slcanprotocol::kCloseCommand.length()) <= 0) {
+        LOG(ERROR) << "Failed to close tty!";
+        return false;
+    }
+
+    // close our unique_fd
+    mFd.reset();
+
+    return true;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/can/1.0/default/CanBusSlcan.h b/automotive/can/1.0/default/CanBusSlcan.h
new file mode 100644
index 0000000..2713da8
--- /dev/null
+++ b/automotive/can/1.0/default/CanBusSlcan.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <linux/serial.h>
+#include <linux/tty.h>
+#include <net/if.h>
+#include <termios.h>
+#include "CanBus.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace implementation {
+
+struct CanBusSlcan : public CanBus {
+    CanBusSlcan(const std::string& uartName, uint32_t bitrate);
+
+  protected:
+    virtual ICanController::Result preUp() override;
+    virtual bool postDown() override;
+
+  private:
+    const std::string mUartName;
+    const uint32_t kBitrate;
+    base::unique_fd mFd;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/can/1.0/default/CanBusVirtual.cpp b/automotive/can/1.0/default/CanBusVirtual.cpp
new file mode 100644
index 0000000..cc59fa9
--- /dev/null
+++ b/automotive/can/1.0/default/CanBusVirtual.cpp
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CanBusVirtual.h"
+
+#include <android-base/logging.h>
+#include <libnetdevice/libnetdevice.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace implementation {
+
+CanBusVirtual::CanBusVirtual(const std::string& ifname) : CanBus(ifname) {}
+
+ICanController::Result CanBusVirtual::preUp() {
+    if (netdevice::exists(mIfname)) return ICanController::Result::OK;
+
+    LOG(DEBUG) << "Virtual interface " << mIfname << " doesn't exist, creating...";
+    mWasCreated = true;
+    if (!netdevice::add(mIfname, "vcan")) {
+        LOG(ERROR) << "Can't create vcan interface " << mIfname;
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    return ICanController::Result::OK;
+}
+
+bool CanBusVirtual::postDown() {
+    if (mWasCreated) {
+        mWasCreated = false;
+        if (!netdevice::del(mIfname)) {
+            LOG(ERROR) << "Couldn't remove vcan interface " << mIfname;
+            return false;
+        }
+    }
+    return true;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.3/default/wifi_legacy_hal_stubs.h b/automotive/can/1.0/default/CanBusVirtual.h
similarity index 61%
copy from wifi/1.3/default/wifi_legacy_hal_stubs.h
copy to automotive/can/1.0/default/CanBusVirtual.h
index 64854e0..c2d5794 100644
--- a/wifi/1.3/default/wifi_legacy_hal_stubs.h
+++ b/automotive/can/1.0/default/CanBusVirtual.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2019 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,23 +14,31 @@
  * limitations under the License.
  */
 
-#ifndef WIFI_LEGACY_HAL_STUBS_H_
-#define WIFI_LEGACY_HAL_STUBS_H_
+#pragma once
+
+#include "CanBus.h"
 
 namespace android {
 namespace hardware {
-namespace wifi {
-namespace V1_3 {
+namespace automotive {
+namespace can {
+namespace V1_0 {
 namespace implementation {
-namespace legacy_hal {
-#include <hardware_legacy/wifi_hal.h>
 
-bool initHalFuncTableWithStubs(wifi_hal_fn* hal_fn);
-}  // namespace legacy_hal
+struct CanBusVirtual : public CanBus {
+    CanBusVirtual(const std::string& ifname);
+
+  protected:
+    virtual ICanController::Result preUp() override;
+    virtual bool postDown() override;
+
+  private:
+    bool mWasCreated = false;
+};
+
 }  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
 }  // namespace hardware
 }  // namespace android
-
-#endif  // WIFI_LEGACY_HAL_STUBS_H_
diff --git a/automotive/can/1.0/default/CanController.cpp b/automotive/can/1.0/default/CanController.cpp
new file mode 100644
index 0000000..ffdc912
--- /dev/null
+++ b/automotive/can/1.0/default/CanController.cpp
@@ -0,0 +1,147 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CanController.h"
+
+#include "CanBusNative.h"
+#include "CanBusSlcan.h"
+#include "CanBusVirtual.h"
+
+#include <android-base/logging.h>
+#include <android/hidl/manager/1.2/IServiceManager.h>
+
+#include <regex>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace implementation {
+
+using IfaceIdDisc = ICanController::BusConfiguration::InterfaceIdentifier::hidl_discriminator;
+
+Return<void> CanController::getSupportedInterfaceTypes(getSupportedInterfaceTypes_cb _hidl_cb) {
+    _hidl_cb({ICanController::InterfaceType::VIRTUAL, ICanController::InterfaceType::SOCKETCAN,
+              ICanController::InterfaceType::SLCAN});
+    return {};
+}
+
+static bool isValidName(const std::string& name) {
+    static const std::regex nameRE("^[a-zA-Z0-9_]{1,32}$");
+    return std::regex_match(name, nameRE);
+}
+
+Return<ICanController::Result> CanController::upInterface(
+        const ICanController::BusConfiguration& config) {
+    LOG(VERBOSE) << "Attempting to bring interface up: " << toString(config);
+
+    std::lock_guard<std::mutex> lck(mCanBusesGuard);
+
+    if (!isValidName(config.name)) {
+        LOG(ERROR) << "Bus name " << config.name << " is invalid";
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    if (mCanBuses.find(config.name) != mCanBuses.end()) {
+        LOG(ERROR) << "Bus " << config.name << " is already up";
+        return ICanController::Result::INVALID_STATE;
+    }
+
+    sp<CanBus> busService;
+
+    if (config.iftype == ICanController::InterfaceType::SOCKETCAN) {
+        // TODO(b/135918744): support serialno
+        if (config.interfaceId.getDiscriminator() == IfaceIdDisc::address) {
+            busService = new CanBusNative(config.interfaceId.address(), config.baudrate);
+        } else {
+            return ICanController::Result::BAD_ADDRESS;
+        }
+    } else if (config.iftype == ICanController::InterfaceType::VIRTUAL) {
+        if (config.interfaceId.getDiscriminator() == IfaceIdDisc::address) {
+            busService = new CanBusVirtual(config.interfaceId.address());
+        } else {
+            return ICanController::Result::BAD_ADDRESS;
+        }
+    } else if (config.iftype == ICanController::InterfaceType::SLCAN) {
+        if (config.interfaceId.getDiscriminator() == IfaceIdDisc::address) {
+            busService = new CanBusSlcan(config.interfaceId.address(), config.baudrate);
+        } else {
+            return ICanController::Result::BAD_ADDRESS;
+        }
+    } else {
+        return ICanController::Result::NOT_SUPPORTED;
+    }
+
+    busService->setErrorCallback([this, name = config.name]() { downInterface(name); });
+
+    const auto result = busService->up();
+    if (result != ICanController::Result::OK) return result;
+
+    if (busService->registerAsService(config.name) != OK) {
+        LOG(ERROR) << "Failed to register ICanBus/" << config.name;
+        if (!busService->down()) {
+            LOG(WARNING) << "Failed to bring down CAN bus that failed to register";
+        }
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    mCanBuses[config.name] = busService;
+
+    return ICanController::Result::OK;
+}
+
+static bool unregisterCanBusService(const hidl_string& name, sp<CanBus> busService) {
+    auto manager = hidl::manager::V1_2::IServiceManager::getService();
+    if (!manager) return false;
+    const auto res = manager->tryUnregister(ICanBus::descriptor, name, busService);
+    if (!res.isOk()) return false;
+    return res;
+}
+
+Return<bool> CanController::downInterface(const hidl_string& name) {
+    LOG(VERBOSE) << "Attempting to bring interface down: " << name;
+
+    std::lock_guard<std::mutex> lck(mCanBusesGuard);
+
+    auto busEntry = mCanBuses.extract(name);
+    if (!busEntry) {
+        LOG(WARNING) << "Interface " << name << " is not up";
+        return false;
+    }
+
+    auto success = true;
+
+    if (!unregisterCanBusService(name, busEntry.mapped())) {
+        LOG(ERROR) << "Couldn't unregister " << name;
+        // don't return yet, let's try to do best-effort cleanup
+        success = false;
+    }
+
+    if (!busEntry.mapped()->down()) {
+        LOG(ERROR) << "Couldn't bring " << name << " down";
+        success = false;
+    }
+
+    return success;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/can/1.0/default/CanController.h b/automotive/can/1.0/default/CanController.h
new file mode 100644
index 0000000..0674d0e
--- /dev/null
+++ b/automotive/can/1.0/default/CanController.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "CanBus.h"
+
+#include <android/hardware/automotive/can/1.0/ICanController.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace implementation {
+
+struct CanController : public ICanController {
+    Return<void> getSupportedInterfaceTypes(getSupportedInterfaceTypes_cb _hidl_cb) override;
+
+    Return<ICanController::Result> upInterface(
+            const ICanController::BusConfiguration& config) override;
+    Return<bool> downInterface(const hidl_string& name) override;
+
+  private:
+    std::mutex mCanBusesGuard;
+    std::map<std::string, sp<CanBus>> mCanBuses GUARDED_BY(mCanBusesGuard);
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/can/1.0/default/CanSocket.cpp b/automotive/can/1.0/default/CanSocket.cpp
new file mode 100644
index 0000000..86e12d1
--- /dev/null
+++ b/automotive/can/1.0/default/CanSocket.cpp
@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CanSocket.h"
+
+#include <android-base/logging.h>
+#include <libnetdevice/can.h>
+#include <libnetdevice/libnetdevice.h>
+#include <linux/can.h>
+#include <utils/SystemClock.h>
+
+#include <chrono>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace implementation {
+
+using namespace std::chrono_literals;
+
+/* How frequently the read thread checks whether the interface was asked to be down.
+ *
+ * Note: This does *not* affect read timing or bandwidth, just CPU load vs time to
+ *       down the interface. */
+static constexpr auto kReadPooling = 100ms;
+
+std::unique_ptr<CanSocket> CanSocket::open(const std::string& ifname, ReadCallback rdcb,
+                                           ErrorCallback errcb) {
+    auto sock = netdevice::can::socket(ifname);
+    if (!sock.ok()) {
+        LOG(ERROR) << "Can't open CAN socket on " << ifname;
+        return nullptr;
+    }
+
+    // Can't use std::make_unique due to private CanSocket constructor.
+    return std::unique_ptr<CanSocket>(new CanSocket(std::move(sock), rdcb, errcb));
+}
+
+CanSocket::CanSocket(base::unique_fd socket, ReadCallback rdcb, ErrorCallback errcb)
+    : mReadCallback(rdcb),
+      mErrorCallback(errcb),
+      mSocket(std::move(socket)),
+      mReaderThread(&CanSocket::readerThread, this) {}
+
+CanSocket::~CanSocket() {
+    mStopReaderThread = true;
+
+    /* CanSocket can be brought down as a result of read failure, from the same thread,
+     * so let's just detach and let it finish on its own. */
+    if (mReaderThreadFinished) {
+        mReaderThread.detach();
+    } else {
+        mReaderThread.join();
+    }
+}
+
+bool CanSocket::send(const struct canfd_frame& frame) {
+    const auto res = write(mSocket.get(), &frame, CAN_MTU);
+    if (res < 0) {
+        LOG(DEBUG) << "CanSocket send failed: " << errno;
+        return false;
+    }
+    if (res != CAN_MTU) {
+        LOG(DEBUG) << "CanSocket sent wrong number of bytes: " << res;
+        return false;
+    }
+    return true;
+}
+
+static struct timeval toTimeval(std::chrono::microseconds t) {
+    struct timeval tv;
+    tv.tv_sec = t / 1s;
+    tv.tv_usec = (t % 1s) / 1us;
+    return tv;
+}
+
+static int selectRead(const base::unique_fd& fd, std::chrono::microseconds timeout) {
+    auto timeouttv = toTimeval(timeout);
+    fd_set readfds;
+    FD_ZERO(&readfds);
+    FD_SET(fd.get(), &readfds);
+    return select(fd.get() + 1, &readfds, nullptr, nullptr, &timeouttv);
+}
+
+void CanSocket::readerThread() {
+    LOG(VERBOSE) << "Reader thread started";
+    int errnoCopy = 0;
+
+    while (!mStopReaderThread) {
+        /* The ideal would be to have a blocking read(3) call and interrupt it with shutdown(3).
+         * This is unfortunately not supported for SocketCAN, so we need to rely on select(3). */
+        const auto sel = selectRead(mSocket, kReadPooling);
+        if (sel == 0) continue;  // timeout
+        if (sel == -1) {
+            LOG(ERROR) << "Select failed: " << errno;
+            break;
+        }
+
+        struct canfd_frame frame;
+        const auto nbytes = read(mSocket.get(), &frame, CAN_MTU);
+
+        /* We could use SIOCGSTAMP to get a precise UNIX timestamp for a given packet, but what
+         * we really need is a time since boot. There is no direct way to convert between these
+         * clocks. We could implement a class to calculate the difference between the clocks
+         * (querying both several times and picking the smallest difference); apply the difference
+         * to a SIOCGSTAMP returned value; re-synchronize if the elapsed time is too much in the
+         * past (indicating the UNIX timestamp might have been adjusted).
+         *
+         * Apart from the added complexity, it's possible the added calculations and system calls
+         * would add so much time to the processing pipeline so the precision of the reported time
+         * was buried under the subsystem latency. Let's just use a local time since boot here and
+         * leave precise hardware timestamps for custom proprietary implementations (if needed). */
+        const std::chrono::nanoseconds ts(elapsedRealtimeNano());
+
+        if (nbytes != CAN_MTU) {
+            if (nbytes >= 0) {
+                LOG(ERROR) << "Failed to read CAN packet, got " << nbytes << " bytes";
+                break;
+            }
+            if (errno == EAGAIN) continue;
+
+            errnoCopy = errno;
+            LOG(ERROR) << "Failed to read CAN packet: " << strerror(errno) << " (" << errno << ")";
+            break;
+        }
+
+        mReadCallback(frame, ts);
+    }
+
+    bool failed = !mStopReaderThread;
+    auto errCb = mErrorCallback;
+    mReaderThreadFinished = true;
+
+    // Don't access any fields from here, see CanSocket::~CanSocket comment about detached thread
+    if (failed) errCb(errnoCopy);
+
+    LOG(VERBOSE) << "Reader thread stopped";
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/can/1.0/default/CanSocket.h b/automotive/can/1.0/default/CanSocket.h
new file mode 100644
index 0000000..c98330b
--- /dev/null
+++ b/automotive/can/1.0/default/CanSocket.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/macros.h>
+#include <android-base/unique_fd.h>
+#include <linux/can.h>
+
+#include <atomic>
+#include <chrono>
+#include <thread>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace implementation {
+
+/** Wrapper around SocketCAN socket. */
+struct CanSocket {
+    using ReadCallback = std::function<void(const struct canfd_frame&, std::chrono::nanoseconds)>;
+    using ErrorCallback = std::function<void(int errnoVal)>;
+
+    /**
+     * Open and bind SocketCAN socket.
+     *
+     * \param ifname SocketCAN network interface name (such as can0)
+     * \param rdcb Callback on received messages
+     * \param errcb Callback on socket failure
+     * \return Socket instance, or nullptr if it wasn't possible to open one
+     */
+    static std::unique_ptr<CanSocket> open(const std::string& ifname, ReadCallback rdcb,
+                                           ErrorCallback errcb);
+    virtual ~CanSocket();
+
+    /**
+     * Send CAN frame.
+     *
+     * \param frame Frame to send
+     * \return true in case of success, false otherwise
+     */
+    bool send(const struct canfd_frame& frame);
+
+  private:
+    CanSocket(base::unique_fd socket, ReadCallback rdcb, ErrorCallback errcb);
+    void readerThread();
+
+    ReadCallback mReadCallback;
+    ErrorCallback mErrorCallback;
+
+    const base::unique_fd mSocket;
+    std::thread mReaderThread;
+    std::atomic<bool> mStopReaderThread = false;
+    std::atomic<bool> mReaderThreadFinished = false;
+
+    DISALLOW_COPY_AND_ASSIGN(CanSocket);
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.3/default/tests/mock_wifi_iface_util.cpp b/automotive/can/1.0/default/CloseHandle.cpp
similarity index 61%
copy from wifi/1.3/default/tests/mock_wifi_iface_util.cpp
copy to automotive/can/1.0/default/CloseHandle.cpp
index 3d877c0..aba2c49 100644
--- a/wifi/1.3/default/tests/mock_wifi_iface_util.cpp
+++ b/automotive/can/1.0/default/CloseHandle.cpp
@@ -14,26 +14,32 @@
  * limitations under the License.
  */
 
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <gmock/gmock.h>
-
-#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
-#include "mock_wifi_iface_util.h"
+#include "CloseHandle.h"
 
 namespace android {
 namespace hardware {
-namespace wifi {
-namespace V1_3 {
+namespace automotive {
+namespace can {
+namespace V1_0 {
 namespace implementation {
-namespace iface_util {
 
-MockWifiIfaceUtil::MockWifiIfaceUtil(
-    const std::weak_ptr<wifi_system::InterfaceTool> iface_tool)
-    : WifiIfaceUtil(iface_tool) {}
-}  // namespace iface_util
+CloseHandle::CloseHandle(Callback callback) : mCallback(callback) {}
+
+CloseHandle::~CloseHandle() {
+    close();
+}
+
+Return<void> CloseHandle::close() {
+    const auto wasClosed = mIsClosed.exchange(true);
+    if (wasClosed) return {};
+
+    if (mCallback != nullptr) mCallback();
+    return {};
+}
+
 }  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
 }  // namespace hardware
 }  // namespace android
diff --git a/automotive/can/1.0/default/CloseHandle.h b/automotive/can/1.0/default/CloseHandle.h
new file mode 100644
index 0000000..eade109
--- /dev/null
+++ b/automotive/can/1.0/default/CloseHandle.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/macros.h>
+#include <android/hardware/automotive/can/1.0/ICloseHandle.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace implementation {
+
+/** Generic ICloseHandle implementation ignoring double-close events. */
+struct CloseHandle : public ICloseHandle {
+    using Callback = std::function<void()>;
+
+    /**
+     * Create a handle with a callback.
+     *
+     * The callback is guaranteed to be called exactly once.
+     *
+     * \param callback Called on the first close() call, or on destruction of the handle
+     */
+    CloseHandle(Callback callback = nullptr);
+    virtual ~CloseHandle();
+
+    Return<void> close() override;
+
+  private:
+    const Callback mCallback;
+    std::atomic<bool> mIsClosed = false;
+
+    DISALLOW_COPY_AND_ASSIGN(CloseHandle);
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/can/1.0/default/android.hardware.automotive.can@1.0-service.rc b/automotive/can/1.0/default/android.hardware.automotive.can@1.0-service.rc
new file mode 100644
index 0000000..a629bda
--- /dev/null
+++ b/automotive/can/1.0/default/android.hardware.automotive.can@1.0-service.rc
@@ -0,0 +1,5 @@
+service can-hal-1.0-service /vendor/bin/hw/android.hardware.automotive.can@1.0-service
+    class hal
+    capabilities NET_ADMIN
+    user vehicle_network
+    group system inet
diff --git a/automotive/can/1.0/default/libnetdevice/Android.bp b/automotive/can/1.0/default/libnetdevice/Android.bp
new file mode 100644
index 0000000..31e5ad0
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/Android.bp
@@ -0,0 +1,30 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_static {
+    name: "android.hardware.automotive.can@libnetdevice",
+    defaults: ["android.hardware.automotive.can@defaults"],
+    vendor_available: true,
+    relative_install_path: "hw",
+    srcs: [
+        "NetlinkRequest.cpp",
+        "NetlinkSocket.cpp",
+        "can.cpp",
+        "common.cpp",
+        "libnetdevice.cpp",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/automotive/can/1.0/default/libnetdevice/NetlinkRequest.cpp b/automotive/can/1.0/default/libnetdevice/NetlinkRequest.cpp
new file mode 100644
index 0000000..9845bc7
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/NetlinkRequest.cpp
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "NetlinkRequest.h"
+
+#include <android-base/logging.h>
+
+namespace android {
+namespace netdevice {
+namespace impl {
+
+static struct rtattr* nlmsg_tail(struct nlmsghdr* n) {
+    return reinterpret_cast<struct rtattr*>(  //
+            reinterpret_cast<uintptr_t>(n) + NLMSG_ALIGN(n->nlmsg_len));
+}
+
+struct rtattr* addattr_l(struct nlmsghdr* n, size_t maxLen, rtattrtype_t type, const void* data,
+                         size_t dataLen) {
+    size_t newLen = NLMSG_ALIGN(n->nlmsg_len) + RTA_SPACE(dataLen);
+    if (newLen > maxLen) {
+        LOG(ERROR) << "addattr_l failed - exceeded maxLen: " << newLen << " > " << maxLen;
+        return nullptr;
+    }
+
+    auto attr = nlmsg_tail(n);
+    attr->rta_len = RTA_SPACE(dataLen);
+    attr->rta_type = type;
+    if (dataLen > 0) memcpy(RTA_DATA(attr), data, dataLen);
+
+    n->nlmsg_len = newLen;
+    return attr;
+}
+
+struct rtattr* addattr_nest(struct nlmsghdr* n, size_t maxLen, rtattrtype_t type) {
+    return addattr_l(n, maxLen, type, nullptr, 0);
+}
+
+void addattr_nest_end(struct nlmsghdr* n, struct rtattr* nest) {
+    size_t nestLen = reinterpret_cast<uintptr_t>(nlmsg_tail(n)) - reinterpret_cast<uintptr_t>(nest);
+    nest->rta_len = nestLen;
+}
+
+}  // namespace impl
+}  // namespace netdevice
+}  // namespace android
diff --git a/automotive/can/1.0/default/libnetdevice/NetlinkRequest.h b/automotive/can/1.0/default/libnetdevice/NetlinkRequest.h
new file mode 100644
index 0000000..ba9b65b
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/NetlinkRequest.h
@@ -0,0 +1,155 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/macros.h>
+#include <linux/rtnetlink.h>
+
+#include <string>
+
+namespace android {
+namespace netdevice {
+
+typedef unsigned short rtattrtype_t;  // as in rtnetlink.h
+typedef __u16 nlmsgtype_t;            // as in netlink.h
+
+/** Implementation details, do not use outside NetlinkRequest template. */
+namespace impl {
+
+struct rtattr* addattr_l(struct nlmsghdr* n, size_t maxLen, rtattrtype_t type, const void* data,
+                         size_t dataLen);
+struct rtattr* addattr_nest(struct nlmsghdr* n, size_t maxLen, rtattrtype_t type);
+void addattr_nest_end(struct nlmsghdr* n, struct rtattr* nest);
+
+}  // namespace impl
+
+/**
+ * Wrapper around NETLINK_ROUTE messages, to build them in C++ style.
+ *
+ * \param T specific message header (such as struct ifinfomsg)
+ * \param BUFSIZE how much space to reserve for payload (not counting the header size)
+ */
+template <class T, unsigned int BUFSIZE = 128>
+struct NetlinkRequest {
+    /**
+     * Create empty message.
+     *
+     * \param type Message type (such as RTM_NEWLINK)
+     * \param flags Message flags (such as NLM_F_REQUEST)
+     */
+    NetlinkRequest(nlmsgtype_t type, uint16_t flags) {
+        mRequest.nlmsg.nlmsg_len = NLMSG_LENGTH(sizeof(mRequest.data));
+        mRequest.nlmsg.nlmsg_type = type;
+        mRequest.nlmsg.nlmsg_flags = flags;
+    }
+
+    /** \return pointer to raw netlink message header. */
+    struct nlmsghdr* header() {
+        return &mRequest.nlmsg;
+    }
+    /** Reference to message-specific header. */
+    T& data() { return mRequest.data; }
+
+    /**
+     * Adds an attribute of a simple type.
+     *
+     * If this method fails (i.e. due to insufficient space), the message will be marked
+     * as bad (\see isGood).
+     *
+     * \param type attribute type (such as IFLA_IFNAME)
+     * \param attr attribute data
+     */
+    template <class A>
+    void addattr(rtattrtype_t type, const A& attr) {
+        if (!mIsGood) return;
+        auto ap = impl::addattr_l(&mRequest.nlmsg, sizeof(mRequest), type, &attr, sizeof(attr));
+        if (ap == nullptr) mIsGood = false;
+    }
+
+    template <>
+    void addattr(rtattrtype_t type, const std::string& s) {
+        if (!mIsGood) return;
+        auto ap = impl::addattr_l(&mRequest.nlmsg, sizeof(mRequest), type, s.c_str(), s.size() + 1);
+        if (ap == nullptr) mIsGood = false;
+    }
+
+    /** Guard class to frame nested attributes. See nest(int). */
+    struct Nest {
+        Nest(NetlinkRequest& req, rtattrtype_t type) : mReq(req), mAttr(req.nestStart(type)) {}
+        ~Nest() { mReq.nestEnd(mAttr); }
+
+      private:
+        NetlinkRequest& mReq;
+        struct rtattr* mAttr;
+
+        DISALLOW_COPY_AND_ASSIGN(Nest);
+    };
+
+    /**
+     * Add nested attribute.
+     *
+     * The returned object is a guard for auto-nesting children inside the argument attribute.
+     * When the Nest object goes out of scope, the nesting attribute is closed.
+     *
+     * Example usage nesting IFLA_CAN_BITTIMING inside IFLA_INFO_DATA, which is nested
+     * inside IFLA_LINKINFO:
+     *    NetlinkRequest<struct ifinfomsg> req(RTM_NEWLINK, NLM_F_REQUEST);
+     *    {
+     *        auto linkinfo = req.nest(IFLA_LINKINFO);
+     *        req.addattr(IFLA_INFO_KIND, "can");
+     *        {
+     *            auto infodata = req.nest(IFLA_INFO_DATA);
+     *            req.addattr(IFLA_CAN_BITTIMING, bitTimingStruct);
+     *        }
+     *    }
+     *    // use req
+     *
+     * \param type attribute type (such as IFLA_LINKINFO)
+     */
+    Nest nest(int type) { return Nest(*this, type); }
+
+    /**
+     * Indicates, whether the message is in a good state.
+     *
+     * The bad state is usually a result of payload buffer being too small.
+     * You can modify BUFSIZE template parameter to fix this.
+     */
+    bool isGood() const { return mIsGood; }
+
+  private:
+    bool mIsGood = true;
+
+    struct {
+        struct nlmsghdr nlmsg;
+        T data;
+        char buf[BUFSIZE];
+    } mRequest = {};
+
+    struct rtattr* nestStart(rtattrtype_t type) {
+        if (!mIsGood) return nullptr;
+        auto attr = impl::addattr_nest(&mRequest.nlmsg, sizeof(mRequest), type);
+        if (attr == nullptr) mIsGood = false;
+        return attr;
+    }
+
+    void nestEnd(struct rtattr* nest) {
+        if (mIsGood && nest != nullptr) impl::addattr_nest_end(&mRequest.nlmsg, nest);
+    }
+};
+
+}  // namespace netdevice
+}  // namespace android
diff --git a/automotive/can/1.0/default/libnetdevice/NetlinkSocket.cpp b/automotive/can/1.0/default/libnetdevice/NetlinkSocket.cpp
new file mode 100644
index 0000000..0514764
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/NetlinkSocket.cpp
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "NetlinkSocket.h"
+
+#include <android-base/logging.h>
+
+namespace android {
+namespace netdevice {
+
+NetlinkSocket::NetlinkSocket(int protocol) {
+    mFd.reset(socket(AF_NETLINK, SOCK_RAW, protocol));
+    if (!mFd.ok()) {
+        LOG(ERROR) << "Can't open Netlink socket: " << errno;
+        mFailed = true;
+        return;
+    }
+
+    struct sockaddr_nl sa = {};
+    sa.nl_family = AF_NETLINK;
+
+    if (bind(mFd.get(), reinterpret_cast<struct sockaddr*>(&sa), sizeof(sa)) < 0) {
+        LOG(ERROR) << "Can't bind Netlink socket: " << errno;
+        mFd.reset();
+        mFailed = true;
+    }
+}
+
+bool NetlinkSocket::send(struct nlmsghdr* nlmsg) {
+    if (mFailed) return false;
+
+    nlmsg->nlmsg_pid = 0;  // kernel
+    nlmsg->nlmsg_seq = mSeq++;
+    nlmsg->nlmsg_flags |= NLM_F_ACK;
+
+    struct iovec iov = {nlmsg, nlmsg->nlmsg_len};
+
+    struct sockaddr_nl sa = {};
+    sa.nl_family = AF_NETLINK;
+
+    struct msghdr msg = {};
+    msg.msg_name = &sa;
+    msg.msg_namelen = sizeof(sa);
+    msg.msg_iov = &iov;
+    msg.msg_iovlen = 1;
+
+    if (sendmsg(mFd.get(), &msg, 0) < 0) {
+        LOG(ERROR) << "Can't send Netlink message: " << errno;
+        return false;
+    }
+    return true;
+}
+
+bool NetlinkSocket::receiveAck() {
+    if (mFailed) return false;
+
+    char buf[8192];
+
+    struct sockaddr_nl sa;
+    struct iovec iov = {buf, sizeof(buf)};
+
+    struct msghdr msg = {};
+    msg.msg_name = &sa;
+    msg.msg_namelen = sizeof(sa);
+    msg.msg_iov = &iov;
+    msg.msg_iovlen = 1;
+
+    const ssize_t status = recvmsg(mFd.get(), &msg, 0);
+    if (status < 0) {
+        LOG(ERROR) << "Failed to receive Netlink message: " << errno;
+        return false;
+    }
+    size_t remainingLen = status;
+
+    if (msg.msg_flags & MSG_TRUNC) {
+        LOG(ERROR) << "Failed to receive Netlink message: truncated";
+        return false;
+    }
+
+    for (auto nlmsg = reinterpret_cast<struct nlmsghdr*>(buf); NLMSG_OK(nlmsg, remainingLen);
+         nlmsg = NLMSG_NEXT(nlmsg, remainingLen)) {
+        // We're looking for error/ack message only, ignoring others.
+        if (nlmsg->nlmsg_type != NLMSG_ERROR) {
+            LOG(WARNING) << "Received unexpected Netlink message (ignored): " << nlmsg->nlmsg_type;
+            continue;
+        }
+
+        // Found error/ack message, return status.
+        auto nlerr = reinterpret_cast<struct nlmsgerr*>(NLMSG_DATA(nlmsg));
+        if (nlerr->error != 0) {
+            LOG(ERROR) << "Received Netlink error message: " << nlerr->error;
+            return false;
+        }
+        return true;
+    }
+    // Couldn't find any error/ack messages.
+    return false;
+}
+
+}  // namespace netdevice
+}  // namespace android
diff --git a/automotive/can/1.0/default/libnetdevice/NetlinkSocket.h b/automotive/can/1.0/default/libnetdevice/NetlinkSocket.h
new file mode 100644
index 0000000..90e1f3f
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/NetlinkSocket.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "NetlinkRequest.h"
+
+#include <android-base/macros.h>
+#include <android-base/unique_fd.h>
+
+#include <linux/netlink.h>
+
+namespace android {
+namespace netdevice {
+
+/**
+ * A wrapper around AF_NETLINK sockets.
+ *
+ * This class is not thread safe to use a single instance between multiple threads, but it's fine to
+ * use multiple instances over multiple threads.
+ */
+struct NetlinkSocket {
+    NetlinkSocket(int protocol);
+
+    /**
+     * Send Netlink message to Kernel.
+     *
+     * \param msg Message to send, nlmsg_seq will be set to next sequence number
+     * \return true, if succeeded
+     */
+    template <class T, unsigned int BUFSIZE>
+    bool send(NetlinkRequest<T, BUFSIZE>& req) {
+        if (!req.isGood()) return false;
+        return send(req.header());
+    }
+
+    /**
+     * Receive Netlink ACK message from Kernel.
+     *
+     * \return true if received ACK message, false in case of error
+     */
+    bool receiveAck();
+
+  private:
+    uint32_t mSeq = 0;
+    base::unique_fd mFd;
+    bool mFailed = false;
+
+    bool send(struct nlmsghdr* msg);
+
+    DISALLOW_COPY_AND_ASSIGN(NetlinkSocket);
+};
+
+}  // namespace netdevice
+}  // namespace android
diff --git a/automotive/can/1.0/default/libnetdevice/can.cpp b/automotive/can/1.0/default/libnetdevice/can.cpp
new file mode 100644
index 0000000..87617dd
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/can.cpp
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <libnetdevice/libnetdevice.h>
+
+#include "NetlinkRequest.h"
+#include "NetlinkSocket.h"
+#include "common.h"
+
+#include <android-base/logging.h>
+#include <android-base/unique_fd.h>
+
+#include <linux/can.h>
+#include <linux/can/netlink.h>
+
+namespace android {
+namespace netdevice {
+namespace can {
+
+base::unique_fd socket(const std::string& ifname) {
+    struct sockaddr_can addr = {};
+    addr.can_family = AF_CAN;
+    addr.can_ifindex = nametoindex(ifname);
+    if (addr.can_ifindex == 0) {
+        LOG(ERROR) << "Interface " << ifname << " doesn't exists";
+        return {};
+    }
+
+    base::unique_fd sock(::socket(PF_CAN, SOCK_RAW, CAN_RAW));
+    if (!sock.ok()) {
+        LOG(ERROR) << "Failed to create CAN socket";
+        return {};
+    }
+
+    if (0 != fcntl(sock.get(), F_SETFL, O_RDWR | O_NONBLOCK)) {
+        LOG(ERROR) << "Couldn't put CAN socket in non-blocking mode";
+        return {};
+    }
+
+    if (0 != bind(sock.get(), reinterpret_cast<struct sockaddr*>(&addr), sizeof(addr))) {
+        LOG(ERROR) << "Can't bind to CAN interface " << ifname;
+        return {};
+    }
+
+    return sock;
+}
+
+bool setBitrate(std::string ifname, uint32_t bitrate) {
+    struct can_bittiming bt = {};
+    bt.bitrate = bitrate;
+
+    NetlinkRequest<struct ifinfomsg> req(RTM_NEWLINK, NLM_F_REQUEST);
+
+    const auto ifidx = nametoindex(ifname);
+    if (ifidx == 0) {
+        LOG(ERROR) << "Can't find interface " << ifname;
+        return false;
+    }
+    req.data().ifi_index = ifidx;
+
+    {
+        auto linkinfo = req.nest(IFLA_LINKINFO);
+        req.addattr(IFLA_INFO_KIND, "can");
+        {
+            auto infodata = req.nest(IFLA_INFO_DATA);
+            /* For CAN FD, it would require to add IFLA_CAN_DATA_BITTIMING
+             * and IFLA_CAN_CTRLMODE as well. */
+            req.addattr(IFLA_CAN_BITTIMING, bt);
+        }
+    }
+
+    NetlinkSocket sock(NETLINK_ROUTE);
+    return sock.send(req) && sock.receiveAck();
+}
+
+}  // namespace can
+}  // namespace netdevice
+}  // namespace android
diff --git a/automotive/can/1.0/default/libnetdevice/common.cpp b/automotive/can/1.0/default/libnetdevice/common.cpp
new file mode 100644
index 0000000..3deac3e
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/common.cpp
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "common.h"
+
+#include <android-base/logging.h>
+
+#include <net/if.h>
+
+namespace android {
+namespace netdevice {
+
+unsigned int nametoindex(const std::string& ifname) {
+    const auto ifidx = if_nametoindex(ifname.c_str());
+    if (ifidx != 0) return ifidx;
+
+    const auto err = errno;
+    if (err != ENODEV) {
+        LOG(ERROR) << "if_nametoindex(" << ifname << ") failed: " << err;
+    }
+    return 0;
+}
+
+}  // namespace netdevice
+}  // namespace android
diff --git a/automotive/can/1.0/default/libnetdevice/common.h b/automotive/can/1.0/default/libnetdevice/common.h
new file mode 100644
index 0000000..9bdff4d
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/common.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <string>
+
+namespace android {
+namespace netdevice {
+
+/**
+ * Returns the index of a given network interface.
+ *
+ * If the syscall to check the index fails with other error than ENODEV, it gets logged and the
+ * return value indicates the interface doesn't exists.
+ *
+ * \param ifname Interface to check
+ * \return Interface index, or 0 if the interface doesn't exist
+ */
+unsigned int nametoindex(const std::string& ifname);
+
+}  // namespace netdevice
+}  // namespace android
diff --git a/automotive/can/1.0/default/libnetdevice/include/libnetdevice/can.h b/automotive/can/1.0/default/libnetdevice/include/libnetdevice/can.h
new file mode 100644
index 0000000..d75361e
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/include/libnetdevice/can.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/unique_fd.h>
+
+#include <string>
+
+namespace android {
+namespace netdevice {
+namespace can {
+
+/**
+ * Opens and binds SocketCAN socket.
+ *
+ * \param ifname Interface to open a socket against
+ * \return Socket's FD or -1 in case of failure
+ */
+base::unique_fd socket(const std::string& ifname);
+
+/**
+ * Sets CAN interface bitrate.
+ *
+ * \param ifname Interface for which the bitrate is to be set
+ * \return true on success, false on failure
+ */
+bool setBitrate(std::string ifname, uint32_t bitrate);
+
+}  // namespace can
+}  // namespace netdevice
+}  // namespace android
diff --git a/automotive/can/1.0/default/libnetdevice/include/libnetdevice/libnetdevice.h b/automotive/can/1.0/default/libnetdevice/include/libnetdevice/libnetdevice.h
new file mode 100644
index 0000000..e22eafb
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/include/libnetdevice/libnetdevice.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <optional>
+#include <string>
+
+namespace android {
+namespace netdevice {
+
+/**
+ * Checks, if the network interface exists.
+ *
+ * \param ifname Interface to check
+ * \return true if it exists, false otherwise
+ */
+bool exists(std::string ifname);
+
+/**
+ * Checks if network interface is up.
+ *
+ * \param ifname Interface to check
+ * \return true/false if the check succeeded, nullopt otherwise
+ */
+std::optional<bool> isUp(std::string ifname);
+
+/**
+ * Brings network interface up.
+ *
+ * \param ifname Interface to bring up
+ * \return true in case of success, false otherwise
+ */
+bool up(std::string ifname);
+
+/**
+ * Brings network interface down.
+ *
+ * \param ifname Interface to bring down
+ * \return true in case of success, false otherwise
+ */
+bool down(std::string ifname);
+
+/**
+ * Adds virtual link.
+ *
+ * \param dev the name of the new virtual device
+ * \param type the type of the new device
+ * \return true in case of success, false otherwise
+ */
+bool add(std::string dev, std::string type);
+
+/**
+ * Deletes virtual link.
+ *
+ * \param dev the name of the device to remove
+ * \return true in case of success, false otherwise
+ */
+bool del(std::string dev);
+
+}  // namespace netdevice
+}  // namespace android
diff --git a/automotive/can/1.0/default/libnetdevice/libnetdevice.cpp b/automotive/can/1.0/default/libnetdevice/libnetdevice.cpp
new file mode 100644
index 0000000..fc2b193
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/libnetdevice.cpp
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <libnetdevice/libnetdevice.h>
+
+#include "NetlinkRequest.h"
+#include "NetlinkSocket.h"
+#include "common.h"
+
+#include <android-base/logging.h>
+
+#include <linux/can.h>
+#include <net/if.h>
+
+namespace android {
+namespace netdevice {
+
+bool exists(std::string ifname) {
+    return nametoindex(ifname) != 0;
+}
+
+static bool sendIfreq(unsigned long request, struct ifreq& ifr) {
+    /* For general interfaces it would be socket(AF_INET, SOCK_DGRAM, 0),
+     * but SEPolicy forces us to limit our flexibility here. */
+    base::unique_fd sock(socket(PF_CAN, SOCK_RAW, CAN_RAW));
+    if (!sock.ok()) {
+        LOG(ERROR) << "Can't create socket";
+        return false;
+    }
+
+    if (ioctl(sock.get(), request, &ifr) < 0) {
+        LOG(ERROR) << "ioctl(" << std::hex << request << std::dec << ") failed: " << errno;
+        return false;
+    }
+
+    return true;
+}
+
+static struct ifreq ifreqFromName(const std::string& ifname) {
+    struct ifreq ifr = {};
+    strlcpy(ifr.ifr_name, ifname.c_str(), IF_NAMESIZE);
+    return ifr;
+}
+
+std::optional<bool> isUp(std::string ifname) {
+    struct ifreq ifr = ifreqFromName(ifname);
+    if (!sendIfreq(SIOCGIFFLAGS, ifr)) return std::nullopt;
+    return ifr.ifr_flags & IFF_UP;
+}
+
+bool up(std::string ifname) {
+    struct ifreq ifr = ifreqFromName(ifname);
+    if (!sendIfreq(SIOCGIFFLAGS, ifr)) return false;
+    ifr.ifr_flags |= IFF_UP;
+    return sendIfreq(SIOCSIFFLAGS, ifr);
+}
+
+bool down(std::string ifname) {
+    struct ifreq ifr = ifreqFromName(ifname);
+    if (!sendIfreq(SIOCGIFFLAGS, ifr)) return false;
+    ifr.ifr_flags &= ~IFF_UP;
+    return sendIfreq(SIOCSIFFLAGS, ifr);
+}
+
+bool add(std::string dev, std::string type) {
+    NetlinkRequest<struct ifinfomsg> req(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
+    req.addattr(IFLA_IFNAME, dev);
+
+    {
+        auto linkinfo = req.nest(IFLA_LINKINFO);
+        req.addattr(IFLA_INFO_KIND, type);
+    }
+
+    NetlinkSocket sock(NETLINK_ROUTE);
+    return sock.send(req) && sock.receiveAck();
+}
+
+bool del(std::string dev) {
+    NetlinkRequest<struct ifinfomsg> req(RTM_DELLINK, NLM_F_REQUEST);
+    req.addattr(IFLA_IFNAME, dev);
+
+    NetlinkSocket sock(NETLINK_ROUTE);
+    return sock.send(req) && sock.receiveAck();
+}
+
+}  // namespace netdevice
+}  // namespace android
diff --git a/automotive/can/1.0/default/service.cpp b/automotive/can/1.0/default/service.cpp
new file mode 100644
index 0000000..7ef44fc
--- /dev/null
+++ b/automotive/can/1.0/default/service.cpp
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CanController.h"
+
+#include <android-base/logging.h>
+#include <hidl/HidlTransportSupport.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace implementation {
+
+static void canControllerService() {
+    base::SetDefaultTag("CanController");
+    base::SetMinimumLogSeverity(android::base::VERBOSE);
+    configureRpcThreadpool(16, true);
+    LOG(DEBUG) << "CAN controller service starting...";
+
+    CanController canController;
+    if (canController.registerAsService("socketcan") != OK) {
+        LOG(FATAL) << "Failed to register CAN controller";
+        return;
+    }
+
+    LOG(INFO) << "CAN controller service ready";
+    joinRpcThreadpool();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+int main() {
+    ::android::hardware::automotive::can::V1_0::implementation::canControllerService();
+    return 1;  // canBusService (joinRpcThreadpool) shouldn't exit
+}
diff --git a/automotive/can/1.0/hidl-utils/Android.bp b/automotive/can/1.0/hidl-utils/Android.bp
new file mode 100644
index 0000000..63b07c9
--- /dev/null
+++ b/automotive/can/1.0/hidl-utils/Android.bp
@@ -0,0 +1,21 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_headers {
+    name: "android.hardware.automotive.can@hidl-utils-lib",
+    export_include_dirs: ["include"],
+    vendor_available: true,
+}
diff --git a/automotive/can/1.0/hidl-utils/include/hidl-utils/hidl-utils.h b/automotive/can/1.0/hidl-utils/include/hidl-utils/hidl-utils.h
new file mode 100644
index 0000000..039f971
--- /dev/null
+++ b/automotive/can/1.0/hidl-utils/include/hidl-utils/hidl-utils.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace hidl_utils {
+
+/**
+ * Helper functor to fetch results from multi-return HIDL calls.
+ * It's meant to be used in place of _hidl_cb callbacks.
+ *
+ * Please note extracting these return variables outside of the callback scope requires making
+ * a copy of each return variable. This may be costly for frequently called HIDL methods with
+ * non-negligible return object size. Please be cautious about performance when using this.
+ *
+ * Example usage:
+ *     Result result;
+ *     sp<ISomeInterface> iface;
+ *     hidlObject->someMethod(arg1, arg2, hidl_utils::fill(&result, &iface)).assertOk();
+ *     // use result and iface
+ */
+template <typename... T>
+struct fill : public std::function<void(const T&...)> {
+    /**
+     * Create _hidl_cb functor that copies the call arguments to specified pointers.
+     *
+     * \param args... Targets to copy the call arguments to
+     */
+    fill(T*... args) : mTargets(args...) {}
+
+    void operator()(const T&... args) { copy<0, T...>(args...); }
+
+  private:
+    std::tuple<T*...> mTargets;
+
+    template <int Pos, typename First>
+    inline void copy(const First& first) {
+        *std::get<Pos>(mTargets) = first;
+    }
+
+    template <int Pos, typename First, typename... Rest>
+    inline void copy(const First& first, const Rest&... rest) {
+        *std::get<Pos>(mTargets) = first;
+        copy<Pos + 1, Rest...>(rest...);
+    }
+};
+
+}  // namespace hidl_utils
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/can/1.0/tools/Android.bp b/automotive/can/1.0/tools/Android.bp
new file mode 100644
index 0000000..21f364b
--- /dev/null
+++ b/automotive/can/1.0/tools/Android.bp
@@ -0,0 +1,57 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_binary {
+    name: "canhalctrl",
+    defaults: ["android.hardware.automotive.can@defaults"],
+    srcs: [
+        "canhalctrl.cpp",
+    ],
+    shared_libs: [
+        "android.hardware.automotive.can@1.0",
+        "libhidlbase",
+    ],
+    header_libs: [
+        "android.hardware.automotive.can@hidl-utils-lib",
+    ],
+}
+
+cc_binary {
+    name: "canhaldump",
+    defaults: ["android.hardware.automotive.can@defaults"],
+    srcs: [
+        "canhaldump.cpp",
+    ],
+    shared_libs: [
+        "android.hardware.automotive.can@1.0",
+        "libhidlbase",
+    ],
+    header_libs: [
+        "android.hardware.automotive.can@hidl-utils-lib",
+    ],
+}
+
+cc_binary {
+    name: "canhalsend",
+    defaults: ["android.hardware.automotive.can@defaults"],
+    srcs: [
+        "canhalsend.cpp",
+    ],
+    shared_libs: [
+        "android.hardware.automotive.can@1.0",
+        "libhidlbase",
+    ],
+}
diff --git a/automotive/can/1.0/tools/canhalctrl.cpp b/automotive/can/1.0/tools/canhalctrl.cpp
new file mode 100644
index 0000000..fa1048d
--- /dev/null
+++ b/automotive/can/1.0/tools/canhalctrl.cpp
@@ -0,0 +1,181 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android/hardware/automotive/can/1.0/ICanController.h>
+#include <android/hidl/manager/1.2/IServiceManager.h>
+#include <hidl-utils/hidl-utils.h>
+
+#include <iostream>
+#include <string>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+
+using ICanController = V1_0::ICanController;
+
+static void usage() {
+    std::cerr << "CAN bus HAL Control tool" << std::endl;
+    std::cerr << std::endl << "usage:" << std::endl << std::endl;
+    std::cerr << "canhalctrl up <bus name> <type> <interface> [baudrate]" << std::endl;
+    std::cerr << "where:" << std::endl;
+    std::cerr << " bus name - name under which ICanBus will be published" << std::endl;
+    std::cerr << " type - one of: virtual, socketcan, slcan, indexed" << std::endl;
+    std::cerr << " interface - hardware identifier (like can0, vcan0, /dev/ttyUSB0)" << std::endl;
+    std::cerr << " baudrate - such as 100000, 125000, 250000, 500000" << std::endl;
+    std::cerr << std::endl;
+    std::cerr << "canhalctrl down <bus name>" << std::endl;
+    std::cerr << "where:" << std::endl;
+    std::cerr << " bus name - name under which ICanBus will be published" << std::endl;
+}
+
+static hidl_vec<hidl_string> getControlServices() {
+    auto manager = hidl::manager::V1_2::IServiceManager::getService();
+    hidl_vec<hidl_string> services;
+    manager->listManifestByInterface(ICanController::descriptor, hidl_utils::fill(&services));
+    if (services.size() == 0) {
+        std::cerr << "No ICanController services registered (missing privileges?)" << std::endl;
+        exit(-1);
+    }
+    return services;
+}
+
+static bool isSupported(sp<ICanController> ctrl, ICanController::InterfaceType iftype) {
+    hidl_vec<ICanController::InterfaceType> supported;
+    if (!ctrl->getSupportedInterfaceTypes(hidl_utils::fill(&supported)).isOk()) return false;
+    return supported.contains(iftype);
+}
+
+static int up(const std::string& busName, ICanController::InterfaceType type,
+              const std::string& interface, uint32_t baudrate) {
+    bool anySupported = false;
+    for (auto&& service : getControlServices()) {
+        auto ctrl = ICanController::getService(service);
+        if (ctrl == nullptr) {
+            std::cerr << "Couldn't open ICanController/" << service;
+            continue;
+        }
+
+        if (!isSupported(ctrl, type)) continue;
+        anySupported = true;
+
+        ICanController::BusConfiguration config = {};
+        config.name = busName;
+        config.iftype = type;
+        config.baudrate = baudrate;
+
+        if (type == ICanController::InterfaceType::INDEXED) {
+            config.interfaceId.index(std::stol(interface));
+        } else {
+            config.interfaceId.address(interface);
+        }
+
+        const auto upresult = ctrl->upInterface(config);
+        if (upresult == ICanController::Result::OK) return 0;
+        std::cerr << "Failed to bring interface up: " << toString(upresult) << std::endl;
+        // Let's continue the loop to try other controllers.
+    }
+
+    if (!anySupported) {
+        std::cerr << "No controller supports " << toString(type) << std::endl;
+    }
+    return -1;
+}
+
+static int down(const std::string& busName) {
+    for (auto&& service : getControlServices()) {
+        auto ctrl = ICanController::getService(service);
+        if (ctrl == nullptr) continue;
+
+        if (ctrl->downInterface(busName)) return 0;
+    }
+
+    std::cerr << "Failed to bring interface " << busName << " down (maybe it's down already?)"
+              << std::endl;
+    return -1;
+}
+
+static std::optional<ICanController::InterfaceType> parseInterfaceType(const std::string& str) {
+    if (str == "virtual") return ICanController::InterfaceType::VIRTUAL;
+    if (str == "socketcan") return ICanController::InterfaceType::SOCKETCAN;
+    if (str == "slcan") return ICanController::InterfaceType::SLCAN;
+    if (str == "indexed") return ICanController::InterfaceType::INDEXED;
+    return std::nullopt;
+}
+
+static int main(int argc, char* argv[]) {
+    base::SetDefaultTag("CanHalControl");
+    base::SetMinimumLogSeverity(android::base::VERBOSE);
+
+    if (argc == 0) {
+        usage();
+        return 0;
+    }
+
+    std::string cmd(argv[0]);
+    argv++;
+    argc--;
+
+    if (cmd == "up") {
+        if (argc < 3 || argc > 4) {
+            std::cerr << "Invalid number of arguments to up command: " << argc << std::endl;
+            usage();
+            return -1;
+        }
+
+        const std::string busName(argv[0]);
+        const std::string typeStr(argv[1]);
+        const std::string interface(argv[2]);
+
+        const auto type = parseInterfaceType(typeStr);
+        if (!type) {
+            std::cerr << "Invalid interface type: " << typeStr << std::endl;
+            usage();
+            return -1;
+        }
+
+        long long baudrate = 0;
+        if (argc == 4) {
+            baudrate = std::stoll(argv[3]);
+        }
+
+        return up(busName, *type, interface, baudrate);
+    } else if (cmd == "down") {
+        if (argc != 1) {
+            std::cerr << "Invalid number of arguments to down command: " << argc << std::endl;
+            usage();
+            return -1;
+        }
+
+        return down(argv[0]);
+    } else {
+        std::cerr << "Invalid command: " << cmd << std::endl;
+        usage();
+        return -1;
+    }
+}
+
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+int main(int argc, char* argv[]) {
+    if (argc < 1) return -1;
+    return ::android::hardware::automotive::can::main(--argc, ++argv);
+}
diff --git a/automotive/can/1.0/tools/canhaldump.cpp b/automotive/can/1.0/tools/canhaldump.cpp
new file mode 100644
index 0000000..99fd14a
--- /dev/null
+++ b/automotive/can/1.0/tools/canhaldump.cpp
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android/hardware/automotive/can/1.0/ICanBus.h>
+#include <android/hardware/automotive/can/1.0/ICanMessageListener.h>
+#include <android/hidl/manager/1.2/IServiceManager.h>
+#include <hidl-utils/hidl-utils.h>
+
+#include <chrono>
+#include <iomanip>
+#include <iostream>
+#include <string>
+#include <thread>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+
+using namespace std::chrono_literals;
+
+using ICanBus = V1_0::ICanBus;
+using Result = V1_0::Result;
+
+struct CanMessageListener : public V1_0::ICanMessageListener {
+    const std::string name;
+
+    CanMessageListener(std::string name) : name(name) {}
+
+    virtual Return<void> onReceive(const V1_0::CanMessage& message) {
+        std::cout << "  " << name << "  " << std::hex << std::uppercase << std::setw(3)
+                  << std::setfill('0') << message.id << std::setw(0);
+        if (message.remoteTransmissionRequest) {
+            std::cout << " RTR";
+        } else {
+            std::cout << "   [" << message.payload.size() << "] ";
+            for (const auto byte : message.payload) {
+                std::cout << " " << std::setfill('0') << std::setw(2) << unsigned(byte);
+            }
+        }
+        std::cout << std::nouppercase << std::dec << std::endl;
+        return {};
+    }
+
+    virtual Return<void> onError(V1_0::ErrorEvent error) {
+        std::cout << "  " << name << "  " << toString(error) << std::endl;
+        return {};
+    }
+};
+
+static void usage() {
+    std::cerr << "canhaldump - dump CAN bus traffic" << std::endl;
+    std::cerr << std::endl << "usage:" << std::endl << std::endl;
+    std::cerr << "canhaldump <bus name>" << std::endl;
+    std::cerr << "where:" << std::endl;
+    std::cerr << " bus name - name under which ICanBus is be published" << std::endl;
+}
+
+// TODO(b/135918744): extract to a new library
+static sp<ICanBus> tryOpen(const std::string& busname) {
+    auto bus = ICanBus::tryGetService(busname);
+    if (bus != nullptr) return bus;
+
+    /* Fallback for interfaces not registered in manifest. For testing purposes only,
+     * one should not depend on this in production deployment. */
+    auto manager = hidl::manager::V1_2::IServiceManager::getService();
+    auto ret = manager->get(ICanBus::descriptor, busname).withDefault(nullptr);
+    if (ret == nullptr) return nullptr;
+
+    std::cerr << "WARNING: bus " << busname << " is not registered in device manifest, "
+              << "trying to fetch it directly..." << std::endl;
+
+    return ICanBus::castFrom(ret);
+}
+
+static int candump(const std::string& busname) {
+    auto bus = tryOpen(busname);
+    if (bus == nullptr) {
+        std::cerr << "Bus " << busname << " is not available" << std::endl;
+        return -1;
+    }
+
+    Result result;
+    sp<V1_0::ICloseHandle> chnd;
+    // TODO(b/135918744): extract to library
+    bus->listen({}, new CanMessageListener(busname), hidl_utils::fill(&result, &chnd)).assertOk();
+
+    if (result != Result::OK) {
+        std::cerr << "Listen call failed: " << toString(result) << std::endl;
+        return -1;
+    }
+
+    while (true) std::this_thread::sleep_for(1h);
+}
+
+static int main(int argc, char* argv[]) {
+    base::SetDefaultTag("CanHalDump");
+    base::SetMinimumLogSeverity(android::base::VERBOSE);
+
+    if (argc == 0) {
+        usage();
+        return 0;
+    }
+
+    if (argc != 1) {
+        std::cerr << "Invalid number of arguments" << std::endl;
+        usage();
+        return -1;
+    }
+
+    return candump(argv[0]);
+}
+
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+int main(int argc, char* argv[]) {
+    if (argc < 1) return -1;
+    return ::android::hardware::automotive::can::main(--argc, ++argv);
+}
diff --git a/automotive/can/1.0/tools/canhalsend.cpp b/automotive/can/1.0/tools/canhalsend.cpp
new file mode 100644
index 0000000..29330c9
--- /dev/null
+++ b/automotive/can/1.0/tools/canhalsend.cpp
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android/hardware/automotive/can/1.0/ICanBus.h>
+#include <android/hidl/manager/1.2/IServiceManager.h>
+
+#include <iostream>
+#include <string>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+
+using ICanBus = V1_0::ICanBus;
+using Result = V1_0::Result;
+
+static void usage() {
+    std::cerr << "cansend - simple command line tool to send raw CAN frames" << std::endl;
+    std::cerr << std::endl << "usage:" << std::endl << std::endl;
+    std::cerr << "canhalsend <bus name> <can id>#<data>" << std::endl;
+    std::cerr << "where:" << std::endl;
+    std::cerr << " bus name - name under which ICanBus is be published" << std::endl;
+    std::cerr << " can id - such as 1a5" << std::endl;
+    std::cerr << " data - such as deadbeef or 010203" << std::endl;
+}
+
+// TODO(b/135918744): extract to a new library
+static sp<ICanBus> tryOpen(const std::string& busname) {
+    auto bus = ICanBus::tryGetService(busname);
+    if (bus != nullptr) return bus;
+
+    /* Fallback for interfaces not registered in manifest. For testing purposes only,
+     * one should not depend on this in production deployment. */
+    auto manager = hidl::manager::V1_2::IServiceManager::getService();
+    auto ret = manager->get(ICanBus::descriptor, busname).withDefault(nullptr);
+    if (ret == nullptr) return nullptr;
+
+    std::cerr << "WARNING: bus " << busname << " is not registered in device manifest, "
+              << "trying to fetch it directly..." << std::endl;
+
+    return ICanBus::castFrom(ret);
+}
+
+static int cansend(const std::string& busname, V1_0::CanMessageId msgid,
+                   std::vector<uint8_t> payload) {
+    auto bus = tryOpen(busname);
+    if (bus == nullptr) {
+        std::cerr << "Bus " << busname << " is not available" << std::endl;
+        return -1;
+    }
+
+    V1_0::CanMessage msg = {};
+    msg.id = msgid;
+    msg.payload = payload;
+
+    const auto result = bus->send(msg);
+    if (result != Result::OK) {
+        std::cerr << "Send call failed: " << toString(result) << std::endl;
+        return -1;
+    }
+    return 0;
+}
+
+static std::optional<std::tuple<V1_0::CanMessageId, std::vector<uint8_t>>> parseCanMessage(
+        const std::string& msg) {
+    const auto hashpos = msg.find("#");
+    if (hashpos == std::string::npos) return std::nullopt;
+
+    const std::string msgidStr = msg.substr(0, hashpos);
+    const std::string payloadStr = msg.substr(hashpos + 1);
+
+    size_t idx = 0;
+    V1_0::CanMessageId msgid = std::stoi(msgidStr, &idx, 16);
+    if (msgidStr[idx] != '\0') return std::nullopt;
+
+    std::vector<uint8_t> payload;
+    if (payloadStr.size() % 2 != 0) return std::nullopt;
+    for (size_t i = 0; i < payloadStr.size(); i += 2) {
+        std::string byteStr(payloadStr, i, 2);
+        payload.emplace_back(std::stoi(byteStr, &idx, 16));
+        if (byteStr[idx] != '\0') return std::nullopt;
+    }
+
+    return {{msgid, payload}};
+}
+
+static int main(int argc, char* argv[]) {
+    base::SetDefaultTag("CanHalSend");
+    base::SetMinimumLogSeverity(android::base::VERBOSE);
+
+    if (argc == 0) {
+        usage();
+        return 0;
+    }
+
+    if (argc != 2) {
+        std::cerr << "Invalid number of arguments" << std::endl;
+        usage();
+        return -1;
+    }
+
+    std::string busname(argv[0]);
+    const auto canmsg = parseCanMessage(argv[1]);
+    if (!canmsg) {
+        std::cerr << "Failed to parse CAN message argument" << std::endl;
+        return -1;
+    }
+    const auto [msgid, payload] = *canmsg;
+
+    return cansend(busname, msgid, payload);
+}
+
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+int main(int argc, char* argv[]) {
+    if (argc < 1) return -1;
+    return ::android::hardware::automotive::can::main(--argc, ++argv);
+}
diff --git a/automotive/can/1.0/types.hal b/automotive/can/1.0/types.hal
new file mode 100644
index 0000000..6f690f7
--- /dev/null
+++ b/automotive/can/1.0/types.hal
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.automotive.can@1.0;
+
+/**
+ * CAN message ID.
+ *
+ * Does not include any flags like RTR nor ERR, only a plain 11-bit
+ * or 29-bit identifier, as defined in CAN 1.x/2.0x.
+ *
+ * Unused bits must be set to zero.
+ */
+typedef uint32_t CanMessageId;
+
+/**
+ * CAN message being sent or received.
+ */
+struct CanMessage {
+    CanMessageId id;
+
+    /**
+     * CAN message payload, as defined in CAN 1.x and CAN 2.x standards.
+     *
+     * The length of the payload vector directly translates to the length
+     * of the data frame (i.e. includes any padding bytes), so it may be in
+     * a range of:
+     *  - 0-8 bytes for standard CAN;
+     *  - up to 64 bytes for CAN FD.
+     * ISO TP is not supported directly for now.
+     */
+    vec<uint8_t> payload;
+
+    /**
+     * Time in nanoseconds since boot.
+     *
+     * Ignored for outgoing messages.
+     */
+    uint64_t timestamp;
+
+    /**
+     * A request to proactively pull certain data from other ECU in CAN network.
+     *
+     * For details please refer to CAN standard.
+     *
+     * If this flag is set, payload must be empty.
+     */
+    bool remoteTransmissionRequest;
+};
+
+/**
+ * Single filter rule for CAN messages.
+ *
+ * A filter is satisfied if:
+ * ((receivedId & mask) == (id & mask)) == !inverted
+ *
+ * In order for set of filters to match, at least one non-inverted filters must match (if there is
+ * one) and all inverted filters must match. In other words:
+ *  - a single matching non-inverted filter makes the whole set matching;
+ *  - a single non-matching inverted filter makes the whole set non-matching.
+ */
+struct CanMessageFilter {
+    CanMessageId id;
+    uint32_t mask;
+    bool inverted;
+};
+
+enum Result : uint8_t {
+    OK,
+    UNKNOWN_ERROR,
+    PAYLOAD_TOO_LONG,
+    INTERFACE_DOWN,
+    TRANSMISSION_FAILURE,
+    INVALID_ARGUMENTS,
+};
+
+/**
+ * @see ICanMessageListener#onError
+ */
+enum ErrorEvent : uint8_t {
+    UNKNOWN_ERROR,
+
+    /** A problem with CAN interface HW. */
+    HARDWARE_ERROR,
+
+    /** CAN interface is down. */
+    INTERFACE_DOWN,
+
+    /** TX buffer overflow: client is sending too many packets. */
+    TX_OVERFLOW,
+
+    /** RX buffer overflow: client is not reading packets fast enough. */
+    RX_OVERFLOW,
+
+    /** Received malformed input. */
+    MALFORMED_INPUT,
+
+    /** Bus overload: there is too much traffic on the bus. */
+    BUS_OVERLOAD,
+
+    /** Bus error: shorted Hi/Lo line, bus off etc. */
+    BUS_ERROR,
+};
diff --git a/automotive/can/1.0/vts/functional/Android.bp b/automotive/can/1.0/vts/functional/Android.bp
new file mode 100644
index 0000000..b4d9132
--- /dev/null
+++ b/automotive/can/1.0/vts/functional/Android.bp
@@ -0,0 +1,47 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_defaults {
+    name: "android.hardware.automotive.can@vts-defaults",
+    defaults: ["VtsHalTargetTestDefaults", "android.hardware.automotive.can@defaults"],
+    header_libs: [
+        "android.hardware.automotive.can@hidl-utils-lib",
+        "android.hardware.automotive.can@vts-utils-lib",
+    ],
+    static_libs: [
+        "android.hardware.automotive.can@1.0",
+        "libgmock",
+    ],
+    test_suites: ["general-tests"],
+}
+
+cc_test {
+    name: "VtsHalCanControllerV1_0TargetTest",
+    defaults: ["android.hardware.automotive.can@vts-defaults"],
+    srcs: ["VtsHalCanControllerV1_0TargetTest.cpp"],
+}
+
+cc_test {
+    name: "VtsHalCanBusV1_0TargetTest",
+    defaults: ["android.hardware.automotive.can@vts-defaults"],
+    srcs: ["VtsHalCanBusV1_0TargetTest.cpp"],
+}
+
+cc_test {
+    name: "VtsHalCanBusVirtualV1_0TargetTest",
+    defaults: ["android.hardware.automotive.can@vts-defaults"],
+    srcs: ["VtsHalCanBusVirtualV1_0TargetTest.cpp"],
+}
diff --git a/automotive/can/1.0/vts/functional/VtsHalCanBusV1_0TargetTest.cpp b/automotive/can/1.0/vts/functional/VtsHalCanBusV1_0TargetTest.cpp
new file mode 100644
index 0000000..1a05716
--- /dev/null
+++ b/automotive/can/1.0/vts/functional/VtsHalCanBusV1_0TargetTest.cpp
@@ -0,0 +1,199 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <android/hardware/automotive/can/1.0/ICanBus.h>
+#include <android/hardware/automotive/can/1.0/types.h>
+#include <can-vts-utils/can-hal-printers.h>
+#include <can-vts-utils/environment-utils.h>
+#include <gmock/gmock.h>
+#include <hidl-utils/hidl-utils.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace vts {
+
+using hardware::hidl_vec;
+
+static utils::SimpleHidlEnvironment<ICanBus>* gEnv = nullptr;
+
+struct CanMessageListener : public can::V1_0::ICanMessageListener {
+    virtual Return<void> onReceive(const can::V1_0::CanMessage&) override { return {}; }
+};
+
+struct CanErrorListener : public can::V1_0::ICanErrorListener {
+    virtual Return<void> onError(ErrorEvent, bool) override { return {}; }
+};
+
+class CanBusHalTest : public ::testing::VtsHalHidlTargetTestBase {
+  protected:
+    virtual void SetUp() override;
+    virtual void TearDown() override;
+
+    std::tuple<Result, sp<ICloseHandle>> listen(const hidl_vec<CanMessageFilter>& filter,
+                                                const sp<ICanMessageListener>& listener);
+    sp<ICloseHandle> listenForErrors(const sp<ICanErrorListener>& listener);
+
+    sp<ICanBus> mCanBus;
+};
+
+void CanBusHalTest::SetUp() {
+    const auto serviceName = gEnv->getServiceName<ICanBus>();
+    mCanBus = getService<ICanBus>(serviceName);
+    ASSERT_TRUE(mCanBus) << "Couldn't open CAN Bus: " << serviceName;
+}
+
+void CanBusHalTest::TearDown() {
+    mCanBus.clear();
+}
+
+std::tuple<Result, sp<ICloseHandle>> CanBusHalTest::listen(
+        const hidl_vec<CanMessageFilter>& filter, const sp<ICanMessageListener>& listener) {
+    Result halResult;
+    sp<ICloseHandle> closeHandle;
+    mCanBus->listen(filter, listener, hidl_utils::fill(&halResult, &closeHandle)).assertOk();
+
+    return {halResult, closeHandle};
+}
+
+sp<ICloseHandle> CanBusHalTest::listenForErrors(const sp<ICanErrorListener>& listener) {
+    const auto res = mCanBus->listenForErrors(listener);
+    res.assertOk();
+    return res;
+}
+
+TEST_F(CanBusHalTest, SendNoPayload) {
+    CanMessage msg = {};
+    msg.id = 0x123;
+
+    const auto result = mCanBus->send(msg);
+    ASSERT_EQ(Result::OK, result);
+}
+
+TEST_F(CanBusHalTest, Send8B) {
+    CanMessage msg = {};
+    msg.id = 0x234;
+    msg.payload = {1, 2, 3, 4, 5, 6, 7, 8};
+
+    const auto result = mCanBus->send(msg);
+    ASSERT_EQ(Result::OK, result);
+}
+
+TEST_F(CanBusHalTest, SendZeroId) {
+    CanMessage msg = {};
+    msg.payload = {1, 2, 3};
+
+    const auto result = mCanBus->send(msg);
+    ASSERT_EQ(Result::OK, result);
+}
+
+TEST_F(CanBusHalTest, SendTooLong) {
+    CanMessage msg = {};
+    msg.id = 0x123;
+    msg.payload = hidl_vec<uint8_t>(102400);  // 100kiB
+
+    const auto result = mCanBus->send(msg);
+    ASSERT_EQ(Result::PAYLOAD_TOO_LONG, result);
+}
+
+TEST_F(CanBusHalTest, ListenNoFilter) {
+    const auto [result, closeHandle] = listen({}, new CanMessageListener());
+    ASSERT_EQ(Result::OK, result);
+
+    closeHandle->close().assertOk();
+}
+
+TEST_F(CanBusHalTest, ListenSomeFilter) {
+    hidl_vec<CanMessageFilter> filters = {
+            {0x123, 0x1FF, false},
+            {0x001, 0x00F, true},
+            {0x200, 0x100, false},
+    };
+
+    const auto [result, closeHandle] = listen(filters, new CanMessageListener());
+    ASSERT_EQ(Result::OK, result);
+
+    closeHandle->close().assertOk();
+}
+
+TEST_F(CanBusHalTest, ListenNull) {
+    const auto [result, closeHandle] = listen({}, nullptr);
+    ASSERT_EQ(Result::INVALID_ARGUMENTS, result);
+}
+
+TEST_F(CanBusHalTest, DoubleCloseListener) {
+    const auto [result, closeHandle] = listen({}, new CanMessageListener());
+    ASSERT_EQ(Result::OK, result);
+
+    closeHandle->close().assertOk();
+    closeHandle->close().assertOk();
+}
+
+TEST_F(CanBusHalTest, DontCloseListener) {
+    const auto [result, closeHandle] = listen({}, new CanMessageListener());
+    ASSERT_EQ(Result::OK, result);
+}
+
+TEST_F(CanBusHalTest, DoubleCloseErrorListener) {
+    auto closeHandle = listenForErrors(new CanErrorListener());
+    ASSERT_NE(nullptr, closeHandle.get());
+
+    closeHandle->close().assertOk();
+    closeHandle->close().assertOk();
+}
+
+TEST_F(CanBusHalTest, DoubleCloseNullErrorListener) {
+    auto closeHandle = listenForErrors(nullptr);
+    ASSERT_NE(nullptr, closeHandle.get());
+
+    closeHandle->close().assertOk();
+    closeHandle->close().assertOk();
+}
+
+TEST_F(CanBusHalTest, DontCloseErrorListener) {
+    auto closeHandle = listenForErrors(new CanErrorListener());
+    ASSERT_NE(nullptr, closeHandle.get());
+}
+
+}  // namespace vts
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+/**
+ * Example manual invocation:
+ * adb shell /data/nativetest64/VtsHalCanBusV1_0TargetTest/VtsHalCanBusV1_0TargetTest \
+ *     --hal_service_instance=android.hardware.automotive.can@1.0::ICanBus/test
+ */
+int main(int argc, char** argv) {
+    using android::hardware::automotive::can::V1_0::ICanBus;
+    using android::hardware::automotive::can::V1_0::vts::gEnv;
+    using android::hardware::automotive::can::V1_0::vts::utils::SimpleHidlEnvironment;
+    android::base::SetDefaultTag("CanBusVts");
+    android::base::SetMinimumLogSeverity(android::base::VERBOSE);
+    gEnv = new SimpleHidlEnvironment<ICanBus>;
+    ::testing::AddGlobalTestEnvironment(gEnv);
+    ::testing::InitGoogleTest(&argc, argv);
+    gEnv->init(&argc, argv);
+    return RUN_ALL_TESTS();
+}
diff --git a/automotive/can/1.0/vts/functional/VtsHalCanBusVirtualV1_0TargetTest.cpp b/automotive/can/1.0/vts/functional/VtsHalCanBusVirtualV1_0TargetTest.cpp
new file mode 100644
index 0000000..225984d
--- /dev/null
+++ b/automotive/can/1.0/vts/functional/VtsHalCanBusVirtualV1_0TargetTest.cpp
@@ -0,0 +1,316 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <android/hardware/automotive/can/1.0/ICanBus.h>
+#include <android/hardware/automotive/can/1.0/ICanController.h>
+#include <android/hardware/automotive/can/1.0/types.h>
+#include <android/hidl/manager/1.2/IServiceManager.h>
+#include <can-vts-utils/can-hal-printers.h>
+#include <can-vts-utils/environment-utils.h>
+#include <gmock/gmock.h>
+#include <hidl-utils/hidl-utils.h>
+#include <utils/Mutex.h>
+#include <utils/SystemClock.h>
+
+#include <chrono>
+#include <thread>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace vts {
+
+using namespace std::chrono_literals;
+
+using hardware::hidl_vec;
+using InterfaceType = ICanController::InterfaceType;
+
+static utils::SimpleHidlEnvironment<ICanController>* gEnv = nullptr;
+
+struct CanMessageListener : public can::V1_0::ICanMessageListener {
+    DISALLOW_COPY_AND_ASSIGN(CanMessageListener);
+
+    CanMessageListener() {}
+
+    virtual Return<void> onReceive(const can::V1_0::CanMessage& msg) override {
+        std::unique_lock<std::mutex> lk(mMessagesGuard);
+        mMessages.push_back(msg);
+        mMessagesUpdated.notify_one();
+        return {};
+    }
+
+    virtual ~CanMessageListener() { mCloseHandle->close(); }
+
+    void assignCloseHandle(sp<ICloseHandle> closeHandle) {
+        EXPECT_TRUE(closeHandle);
+        EXPECT_FALSE(mCloseHandle);
+        mCloseHandle = closeHandle;
+    }
+
+    std::vector<can::V1_0::CanMessage> fetchMessages(std::chrono::milliseconds timeout,
+                                                     unsigned atLeast = 1) {
+        std::unique_lock<std::mutex> lk(mMessagesGuard);
+        mMessagesUpdated.wait_for(lk, timeout, [&] { return mMessages.size() >= atLeast; });
+        const auto messages = mMessages;
+        mMessages.clear();
+        return messages;
+    }
+
+  private:
+    sp<ICloseHandle> mCloseHandle;
+
+    std::mutex mMessagesGuard;
+    std::condition_variable mMessagesUpdated GUARDED_BY(mMessagesGuard);
+    std::vector<can::V1_0::CanMessage> mMessages GUARDED_BY(mMessagesGuard);
+};
+
+struct Bus {
+    DISALLOW_COPY_AND_ASSIGN(Bus);
+
+    Bus(sp<ICanController> controller, const ICanController::BusConfiguration& config)
+        : mIfname(config.name), mController(controller) {
+        const auto result = controller->upInterface(config);
+        EXPECT_EQ(ICanController::Result::OK, result);
+
+        /* Not using ICanBus::getService here, since it ignores interfaces not in the manifest
+         * file -- this is a test, so we don't want to add dummy services to a device manifest. */
+        auto manager = hidl::manager::V1_2::IServiceManager::getService();
+        auto service = manager->get(ICanBus::descriptor, config.name);
+        mBus = ICanBus::castFrom(service);
+        EXPECT_TRUE(mBus) << "ICanBus/" << config.name << " failed to register";
+    }
+
+    virtual ~Bus() { reset(); }
+
+    void reset() {
+        mBus.clear();
+        if (mController) {
+            const auto res = mController->downInterface(mIfname);
+            EXPECT_TRUE(res);
+            mController.clear();
+        }
+    }
+
+    ICanBus* operator->() const { return mBus.get(); }
+    sp<ICanBus> get() { return mBus; }
+
+    sp<CanMessageListener> listen(const hidl_vec<CanMessageFilter>& filter) {
+        sp<CanMessageListener> listener = new CanMessageListener();
+
+        Result result;
+        sp<ICloseHandle> closeHandle;
+        mBus->listen(filter, listener, hidl_utils::fill(&result, &closeHandle)).assertOk();
+        EXPECT_EQ(Result::OK, result);
+        listener->assignCloseHandle(closeHandle);
+
+        return listener;
+    }
+
+    void send(const CanMessage& msg) {
+        const auto result = mBus->send(msg);
+        EXPECT_EQ(Result::OK, result);
+    }
+
+  private:
+    const std::string mIfname;
+    sp<ICanController> mController;
+    sp<ICanBus> mBus;
+};
+
+class CanBusVirtualHalTest : public ::testing::VtsHalHidlTargetTestBase {
+  protected:
+    virtual void SetUp() override;
+
+    static void SetUpTestCase();
+    static void TearDownTestCase();
+
+    Bus makeBus();
+
+  private:
+    unsigned mLastIface = 0;
+    static sp<ICanController> mCanController;
+    static bool mVirtualSupported;
+};
+
+sp<ICanController> CanBusVirtualHalTest::mCanController = nullptr;
+bool CanBusVirtualHalTest::mVirtualSupported;
+
+static CanMessage makeMessage(CanMessageId id) {
+    CanMessage msg = {};
+    msg.id = id;
+    return msg;
+}
+
+static void clearTimestamps(std::vector<CanMessage>& messages) {
+    std::for_each(messages.begin(), messages.end(), [](auto& msg) { msg.timestamp = 0; });
+}
+
+void CanBusVirtualHalTest::SetUp() {
+    if (!mVirtualSupported) GTEST_SKIP();
+}
+
+void CanBusVirtualHalTest::SetUpTestCase() {
+    const auto serviceName = gEnv->getServiceName<ICanController>();
+    mCanController = getService<ICanController>(serviceName);
+    ASSERT_TRUE(mCanController) << "Couldn't open CAN Controller: " << serviceName;
+
+    hidl_vec<InterfaceType> supported;
+    mCanController->getSupportedInterfaceTypes(hidl_utils::fill(&supported)).assertOk();
+    mVirtualSupported = supported.contains(InterfaceType::VIRTUAL);
+}
+
+void CanBusVirtualHalTest::TearDownTestCase() {
+    mCanController.clear();
+}
+
+Bus CanBusVirtualHalTest::makeBus() {
+    const auto idx = ++mLastIface;
+
+    ICanController::BusConfiguration config = {};
+    config.name = "test" + std::to_string(idx);
+    config.iftype = InterfaceType::VIRTUAL;
+    config.interfaceId.address("vcan50");
+
+    return Bus(mCanController, config);
+}
+
+TEST_F(CanBusVirtualHalTest, Send) {
+    auto bus = makeBus();
+
+    CanMessage msg = {};
+    msg.id = 0x123;
+    msg.payload = {1, 2, 3};
+
+    bus.send(msg);
+}
+
+TEST_F(CanBusVirtualHalTest, SendAfterClose) {
+    auto bus = makeBus();
+    auto zombie = bus.get();
+    bus.reset();
+
+    const auto result = zombie->send({});
+    ASSERT_EQ(Result::INTERFACE_DOWN, result);
+}
+
+TEST_F(CanBusVirtualHalTest, SendAndRecv) {
+    auto bus1 = makeBus();
+    auto bus2 = makeBus();
+
+    auto listener = bus2.listen({});
+
+    CanMessage msg = {};
+    msg.id = 0x123;
+    msg.payload = {1, 2, 3};
+    bus1.send(msg);
+
+    auto messages = listener->fetchMessages(100ms);
+    ASSERT_EQ(1u, messages.size());
+    ASSERT_NEAR(uint64_t(elapsedRealtimeNano()), messages[0].timestamp,
+                std::chrono::nanoseconds(100ms).count());
+    clearTimestamps(messages);
+    ASSERT_EQ(msg, messages[0]);
+}
+
+TEST_F(CanBusVirtualHalTest, DownOneOfTwo) {
+    auto bus1 = makeBus();
+    auto bus2 = makeBus();
+
+    bus2.reset();
+
+    bus1.send({});
+}
+
+TEST_F(CanBusVirtualHalTest, Filter) {
+    auto bus1 = makeBus();
+    auto bus2 = makeBus();
+
+    hidl_vec<CanMessageFilter> filterPositive = {
+            {0x101, 0x100, false},
+            {0x010, 0x0F0, false},
+    };
+    auto listenerPositive = bus2.listen(filterPositive);
+
+    hidl_vec<CanMessageFilter> filterNegative = {
+            {0x123, 0x0FF, true},
+            {0x004, 0x00F, true},
+    };
+    auto listenerNegative = bus2.listen(filterNegative);
+
+    bus1.send(makeMessage(0));
+    bus1.send(makeMessage(0x1A0));
+    bus1.send(makeMessage(0x1A1));
+    bus1.send(makeMessage(0x2A0));
+    bus1.send(makeMessage(0x3A0));
+    bus1.send(makeMessage(0x010));
+    bus1.send(makeMessage(0x123));
+    bus1.send(makeMessage(0x023));
+    bus1.send(makeMessage(0x124));
+
+    std::vector<can::V1_0::CanMessage> expectedPositive{
+            makeMessage(0x1A0),  //
+            makeMessage(0x1A1),  //
+            makeMessage(0x3A0),  //
+            makeMessage(0x010),  //
+            makeMessage(0x123),  //
+            makeMessage(0x124),  //
+    };
+    std::vector<can::V1_0::CanMessage> expectedNegative{
+            makeMessage(0),      //
+            makeMessage(0x1A0),  //
+            makeMessage(0x1A1),  //
+            makeMessage(0x2A0),  //
+            makeMessage(0x3A0),  //
+            makeMessage(0x010),  //
+    };
+
+    auto messagesNegative = listenerNegative->fetchMessages(100ms, expectedNegative.size());
+    auto messagesPositive = listenerPositive->fetchMessages(100ms, expectedPositive.size());
+    clearTimestamps(messagesNegative);
+    clearTimestamps(messagesPositive);
+    ASSERT_EQ(expectedNegative, messagesNegative);
+    ASSERT_EQ(expectedPositive, messagesPositive);
+}
+
+}  // namespace vts
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+/**
+ * Example manual invocation:
+ * adb shell /data/nativetest64/VtsHalCanBusVirtualV1_0TargetTest/VtsHalCanBusVirtualV1_0TargetTest\
+ *     --hal_service_instance=android.hardware.automotive.can@1.0::ICanController/socketcan
+ */
+int main(int argc, char** argv) {
+    using android::hardware::automotive::can::V1_0::ICanController;
+    using android::hardware::automotive::can::V1_0::vts::gEnv;
+    using android::hardware::automotive::can::V1_0::vts::utils::SimpleHidlEnvironment;
+    android::base::SetDefaultTag("CanBusVirtualVts");
+    android::base::SetMinimumLogSeverity(android::base::VERBOSE);
+    gEnv = new SimpleHidlEnvironment<ICanController>;
+    ::testing::AddGlobalTestEnvironment(gEnv);
+    ::testing::InitGoogleTest(&argc, argv);
+    gEnv->init(&argc, argv);
+    return RUN_ALL_TESTS();
+}
diff --git a/automotive/can/1.0/vts/functional/VtsHalCanControllerV1_0TargetTest.cpp b/automotive/can/1.0/vts/functional/VtsHalCanControllerV1_0TargetTest.cpp
new file mode 100644
index 0000000..64e7a96
--- /dev/null
+++ b/automotive/can/1.0/vts/functional/VtsHalCanControllerV1_0TargetTest.cpp
@@ -0,0 +1,259 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <android/hardware/automotive/can/1.0/ICanBus.h>
+#include <android/hardware/automotive/can/1.0/ICanController.h>
+#include <android/hardware/automotive/can/1.0/types.h>
+#include <android/hidl/manager/1.2/IServiceManager.h>
+#include <can-vts-utils/can-hal-printers.h>
+#include <can-vts-utils/environment-utils.h>
+#include <gmock/gmock.h>
+#include <hidl-utils/hidl-utils.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace vts {
+
+using hardware::hidl_vec;
+using InterfaceType = ICanController::InterfaceType;
+
+static utils::SimpleHidlEnvironment<ICanController>* gEnv = nullptr;
+
+class CanControllerHalTest : public ::testing::VtsHalHidlTargetTestBase {
+  protected:
+    virtual void SetUp() override;
+    virtual void TearDown() override;
+
+    hidl_vec<InterfaceType> getSupportedInterfaceTypes();
+    bool isSupported(InterfaceType iftype);
+
+    bool up(InterfaceType iftype, const std::string srvname, std::string ifname,
+            ICanController::Result expected);
+    void assertRegistered(const std::string srvname, bool expectRegistered);
+
+    sp<ICanController> mCanController;
+};
+
+void CanControllerHalTest::SetUp() {
+    const auto serviceName = gEnv->getServiceName<ICanController>();
+    mCanController = getService<ICanController>(serviceName);
+    ASSERT_TRUE(mCanController) << "Couldn't open CAN Controller: " << serviceName;
+}
+
+void CanControllerHalTest::TearDown() {
+    mCanController.clear();
+}
+
+hidl_vec<InterfaceType> CanControllerHalTest::getSupportedInterfaceTypes() {
+    hidl_vec<InterfaceType> iftypesResult;
+    mCanController->getSupportedInterfaceTypes(hidl_utils::fill(&iftypesResult)).assertOk();
+    return iftypesResult;
+}
+
+bool CanControllerHalTest::isSupported(InterfaceType iftype) {
+    const auto supported = getSupportedInterfaceTypes();
+    return std::find(supported.begin(), supported.end(), iftype) != supported.end();
+}
+
+bool CanControllerHalTest::up(InterfaceType iftype, std::string srvname, std::string ifname,
+                              ICanController::Result expected) {
+    ICanController::BusConfiguration config = {};
+    config.name = srvname;
+    config.iftype = iftype;
+    config.interfaceId.address(ifname);
+
+    const auto upresult = mCanController->upInterface(config);
+
+    if (!isSupported(iftype)) {
+        LOG(INFO) << iftype << " interfaces not supported";
+        EXPECT_EQ(ICanController::Result::NOT_SUPPORTED, upresult);
+        return false;
+    }
+
+    EXPECT_EQ(expected, upresult);
+    return true;
+}
+
+void CanControllerHalTest::assertRegistered(std::string srvname, bool expectRegistered) {
+    /* Not using ICanBus::tryGetService here, since it ignores interfaces not in the manifest
+     * file -- this is a test, so we don't want to add dummy services to a device manifest. */
+    auto manager = hidl::manager::V1_2::IServiceManager::getService();
+    auto busService = manager->get(ICanBus::descriptor, srvname);
+    ASSERT_EQ(expectRegistered, busService.withDefault(nullptr) != nullptr)
+            << "ICanBus/" << srvname << (expectRegistered ? " is not " : " is ") << "registered"
+            << " (should be otherwise)";
+}
+
+TEST_F(CanControllerHalTest, SupportsSomething) {
+    const auto supported = getSupportedInterfaceTypes();
+    ASSERT_GT(supported.size(), 0u);
+}
+
+TEST_F(CanControllerHalTest, BringUpDown) {
+    const std::string name = "dummy";
+
+    assertRegistered(name, false);
+    if (!up(InterfaceType::VIRTUAL, name, "vcan57", ICanController::Result::OK)) GTEST_SKIP();
+    assertRegistered(name, true);
+
+    const auto dnresult = mCanController->downInterface(name);
+    ASSERT_TRUE(dnresult);
+
+    assertRegistered(name, false);
+}
+
+TEST_F(CanControllerHalTest, DownDummy) {
+    const auto result = mCanController->downInterface("imnotup");
+    ASSERT_FALSE(result);
+}
+
+TEST_F(CanControllerHalTest, UpTwice) {
+    const std::string name = "dummy";
+
+    assertRegistered(name, false);
+    if (!up(InterfaceType::VIRTUAL, name, "vcan72", ICanController::Result::OK)) GTEST_SKIP();
+    assertRegistered(name, true);
+    if (!up(InterfaceType::VIRTUAL, name, "vcan73", ICanController::Result::INVALID_STATE)) {
+        GTEST_SKIP();
+    }
+    assertRegistered(name, true);
+
+    const auto result = mCanController->downInterface(name);
+    ASSERT_TRUE(result);
+    assertRegistered(name, false);
+}
+
+TEST_F(CanControllerHalTest, IdentifierCompatibility) {
+    using IdDisc = ICanController::BusConfiguration::InterfaceIdentifier::hidl_discriminator;
+    static const std::map<InterfaceType, std::vector<IdDisc>> compatMatrix = {
+            {InterfaceType::VIRTUAL, {IdDisc::address}},
+            {InterfaceType::SOCKETCAN, {IdDisc::address, IdDisc::serialno}},
+            {InterfaceType::SLCAN, {IdDisc::address, IdDisc::serialno}},
+            {InterfaceType::INDEXED, {IdDisc::index}},
+    };
+    static const std::vector<IdDisc> allDisc = {IdDisc::address, IdDisc::index, IdDisc::serialno};
+
+    for (const auto [iftype, supported] : compatMatrix) {
+        for (const auto iddisc : allDisc) {
+            LOG(INFO) << "Compatibility testing: " << iftype << " / " << iddisc;
+
+            ICanController::BusConfiguration config = {};
+            config.name = "compattestsrv";
+            config.iftype = iftype;
+            config.baudrate = 125000;
+
+            // using random-ish addresses, which may not be valid - we can't test the success case
+            if (iddisc == IdDisc::address) {
+                config.interfaceId.address("can0");
+            } else if (iddisc == IdDisc::index) {
+                config.interfaceId.index(0);
+            } else if (iddisc == IdDisc::serialno) {
+                config.interfaceId.serialno({"dummy", "dummier"});
+            }
+
+            const auto upresult = mCanController->upInterface(config);
+
+            if (!isSupported(iftype)) {
+                ASSERT_EQ(ICanController::Result::NOT_SUPPORTED, upresult);
+                continue;
+            }
+            ASSERT_NE(ICanController::Result::NOT_SUPPORTED, upresult);
+
+            bool isSupportedDisc =
+                    std::find(supported.begin(), supported.end(), iddisc) != supported.end();
+            if (!isSupportedDisc) {
+                ASSERT_EQ(ICanController::Result::BAD_ADDRESS, upresult);
+                continue;
+            }
+
+            if (upresult == ICanController::Result::OK) {
+                const auto dnresult = mCanController->downInterface(config.name);
+                ASSERT_TRUE(dnresult);
+                continue;
+            }
+        }
+    }
+}
+
+TEST_F(CanControllerHalTest, FailEmptyName) {
+    const std::string name = "";
+
+    assertRegistered(name, false);
+    if (!up(InterfaceType::VIRTUAL, name, "vcan57", ICanController::Result::UNKNOWN_ERROR)) {
+        GTEST_SKIP();
+    }
+    assertRegistered(name, false);
+}
+
+TEST_F(CanControllerHalTest, FailBadName) {
+    // 33 characters (name can be at most 32 characters long)
+    const std::string name = "ab012345678901234567890123456789c";
+
+    assertRegistered(name, false);
+    if (!up(InterfaceType::VIRTUAL, name, "vcan57", ICanController::Result::UNKNOWN_ERROR)) {
+        GTEST_SKIP();
+    }
+    assertRegistered(name, false);
+}
+
+TEST_F(CanControllerHalTest, FailBadVirtualAddress) {
+    const std::string name = "dummy";
+
+    assertRegistered(name, false);
+    if (!up(InterfaceType::VIRTUAL, name, "", ICanController::Result::BAD_ADDRESS)) GTEST_SKIP();
+    assertRegistered(name, false);
+}
+
+TEST_F(CanControllerHalTest, FailBadSocketcanAddress) {
+    const std::string name = "dummy";
+
+    assertRegistered(name, false);
+    if (!up(InterfaceType::SOCKETCAN, name, "can87", ICanController::Result::BAD_ADDRESS)) {
+        GTEST_SKIP();
+    }
+    assertRegistered(name, false);
+}
+
+}  // namespace vts
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+/**
+ * Example manual invocation:
+ * adb shell /data/nativetest64/VtsHalCanControllerV1_0TargetTest/VtsHalCanControllerV1_0TargetTest\
+ *     --hal_service_instance=android.hardware.automotive.can@1.0::ICanController/socketcan
+ */
+int main(int argc, char** argv) {
+    using android::hardware::automotive::can::V1_0::ICanController;
+    using android::hardware::automotive::can::V1_0::vts::gEnv;
+    using android::hardware::automotive::can::V1_0::vts::utils::SimpleHidlEnvironment;
+    android::base::SetDefaultTag("CanControllerVts");
+    android::base::SetMinimumLogSeverity(android::base::VERBOSE);
+    gEnv = new SimpleHidlEnvironment<ICanController>;
+    ::testing::AddGlobalTestEnvironment(gEnv);
+    ::testing::InitGoogleTest(&argc, argv);
+    gEnv->init(&argc, argv);
+    return RUN_ALL_TESTS();
+}
diff --git a/automotive/can/1.0/vts/utils/Android.bp b/automotive/can/1.0/vts/utils/Android.bp
new file mode 100644
index 0000000..e925c8f
--- /dev/null
+++ b/automotive/can/1.0/vts/utils/Android.bp
@@ -0,0 +1,20 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_headers {
+    name: "android.hardware.automotive.can@vts-utils-lib",
+    export_include_dirs: ["include"],
+}
diff --git a/automotive/can/1.0/vts/utils/include/can-vts-utils/can-hal-printers.h b/automotive/can/1.0/vts/utils/include/can-vts-utils/can-hal-printers.h
new file mode 100644
index 0000000..0923998
--- /dev/null
+++ b/automotive/can/1.0/vts/utils/include/can-vts-utils/can-hal-printers.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/automotive/can/1.0/ICanController.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+
+/**
+ * Define gTest printer for a given HIDL type, but skip definition for Return<T>.
+ */
+#define DEFINE_CAN_HAL_PRINTER_SIMPLE(T, converter) \
+    std::ostream& operator<<(std::ostream& os, const T& v) { return os << converter(v); }
+
+/**
+ * Define gTest printer for a given HIDL type.
+ */
+#define DEFINE_CAN_HAL_PRINTER(T, converter)    \
+    DEFINE_CAN_HAL_PRINTER_SIMPLE(T, converter) \
+    std::ostream& operator<<(std::ostream& os, const Return<T>& v) { return os << converter(v); }
+
+DEFINE_CAN_HAL_PRINTER(CanMessage, toString)
+DEFINE_CAN_HAL_PRINTER(ErrorEvent, toString)
+DEFINE_CAN_HAL_PRINTER_SIMPLE(
+        ICanController::BusConfiguration::InterfaceIdentifier::hidl_discriminator, int)
+DEFINE_CAN_HAL_PRINTER(ICanController::InterfaceType, toString)
+DEFINE_CAN_HAL_PRINTER(ICanController::Result, toString)
+DEFINE_CAN_HAL_PRINTER(Result, toString)
+
+#undef DEFINE_CAN_HAL_PRINTER
+#undef DEFINE_CAN_HAL_PRINTER_SIMPLE
+
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/can/1.0/vts/utils/include/can-vts-utils/environment-utils.h b/automotive/can/1.0/vts/utils/include/can-vts-utils/environment-utils.h
new file mode 100644
index 0000000..a722dd0
--- /dev/null
+++ b/automotive/can/1.0/vts/utils/include/can-vts-utils/environment-utils.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <VtsHalHidlTargetTestEnvBase.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace can {
+namespace V1_0 {
+namespace vts {
+namespace utils {
+
+/**
+ * Simple test environment.
+ *
+ * This is a helper class to instantiate a test environment without boilerplate code for cases where
+ * there is no need to pass more parameters than just HIDL service instance name.
+ *
+ * The class implements registerTestServices() by calling registerTestService() on every HIDL
+ * interface provided as parameter to this template.
+ *
+ * Example usage:
+ *     static utils::SimpleHidlEnvironment<IMyService>* gEnv = nullptr;
+ *
+ *     void CanBusHalTest::SetUp() {
+ *         const auto serviceName = gEnv->getServiceName<IMyService>();
+ *         (...)
+ *     }
+ *
+ *     int main(int argc, char** argv) {
+ *         gEnv = new SimpleHidlEnvironment<IMyService>;
+ *         ::testing::AddGlobalTestEnvironment(gEnv);
+ *         ::testing::InitGoogleTest(&argc, argv);
+ *         gEnv->init(&argc, argv);
+ *         return RUN_ALL_TESTS();
+ *     }
+ *
+ * \param T... HIDL interface names to register for a test service
+ */
+template <typename... T>
+class SimpleHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
+  public:
+    virtual void registerTestServices() override {
+        // Call registerTestService() for every HIDL interface using this template.
+        using expander = int[];
+        (void)expander{0, (registerTestService<T>(), 0)...};
+    }
+};
+
+}  // namespace utils
+}  // namespace vts
+}  // namespace V1_0
+}  // namespace can
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/evs/1.0/IEvsCamera.hal b/automotive/evs/1.0/IEvsCamera.hal
index dbcaf92..464dafb 100644
--- a/automotive/evs/1.0/IEvsCamera.hal
+++ b/automotive/evs/1.0/IEvsCamera.hal
@@ -16,7 +16,6 @@
 
 package android.hardware.automotive.evs@1.0;
 
-import types;
 import IEvsCameraStream;
 
 
@@ -28,8 +27,8 @@
     /**
      * Returns the ID of this camera.
      *
-     * Returns the description of this camera. This must be the same value as reported
-     * by EvsEnumerator::getCamerList().
+     * @return info The description of this camera.  This must be the same value as
+     *              reported by EvsEnumerator::getCameraList().
      */
     getCameraInfo() generates (CameraDesc info);
 
@@ -43,16 +42,20 @@
      * in which case buffers should be added or removed from the chain as appropriate.
      * If no call is made to this entry point, the IEvsCamera must support at least one
      * frame by default. More is acceptable.
-     * BUFFER_NOT_AVAILABLE is returned if the implementation cannot support the
-     * requested number of concurrent frames.
+     *
+     * @param  bufferCount Number of buffers the client of IEvsCamera may hold concurrently.
+     * @return result EvsResult::OK is returned if this call is successful.
      */
     setMaxFramesInFlight(uint32_t bufferCount) generates (EvsResult result);
 
     /**
-     * Request delivery of EVS camera frames from this camera.
+     * Request to start EVS camera stream from this camera.
      *
-     * The IEvsCameraStream must begin receiving periodic calls with new image
-     * frames until stopVideoStream() is called.
+     * The IEvsCameraStream must begin receiving calls with various events
+     * including new image frame ready until stopVideoStream() is called.
+     *
+     * @param  receiver IEvsCameraStream implementation.
+     * @return result EvsResult::OK is returned if this call is successful.
      */
     startVideoStream(IEvsCameraStream receiver) generates (EvsResult result);
 
@@ -64,6 +67,8 @@
      * A small, finite number of buffers are available (possibly as small
      * as one), and if the supply is exhausted, no further frames may be
      * delivered until a buffer is returned.
+     *
+     * @param  buffer A buffer to be returned.
      */
     oneway doneWithFrame(BufferDesc buffer);
 
@@ -83,6 +88,11 @@
      * The values allowed for opaqueIdentifier are driver specific,
      * but no value passed in may crash the driver. The driver should
      * return 0 for any unrecognized opaqueIdentifier.
+     *
+     * @param  opaqueIdentifier An unique identifier of the information to
+     *                          request.
+     * @return value            Requested information.  Zero is returned if the
+     *                          driver does not recognize a given identifier.
      */
     getExtendedInfo(uint32_t opaqueIdentifier) generates (int32_t value);
 
@@ -94,6 +104,11 @@
      * in order to function in a default state.
      * INVALID_ARG is returned if the opaqueValue is not meaningful to
      * the driver implementation.
+     *
+     * @param  opaqueIdentifier An unique identifier of the information to
+     *                          program.
+     *         opaqueValue      A value to program.
+     * @return result           EvsResult::OK is returned if this call is successful.
      */
     setExtendedInfo(uint32_t opaqueIdentifier, int32_t opaqueValue) generates (EvsResult result);
 };
diff --git a/automotive/evs/1.0/IEvsCameraStream.hal b/automotive/evs/1.0/IEvsCameraStream.hal
index 4e743b2..ec18f6a 100644
--- a/automotive/evs/1.0/IEvsCameraStream.hal
+++ b/automotive/evs/1.0/IEvsCameraStream.hal
@@ -31,6 +31,8 @@
      * When the last frame in the stream has been delivered, a NULL bufferHandle
      * must be delivered, signifying the end of the stream. No further frame
      * deliveries may happen thereafter.
+     *
+     * @param buffer a buffer descriptor of a delivered image frame.
      */
     oneway deliverFrame(BufferDesc buffer);
 };
diff --git a/automotive/evs/1.0/IEvsDisplay.hal b/automotive/evs/1.0/IEvsDisplay.hal
index 12541f3..72f767e 100644
--- a/automotive/evs/1.0/IEvsDisplay.hal
+++ b/automotive/evs/1.0/IEvsDisplay.hal
@@ -16,8 +16,6 @@
 
 package android.hardware.automotive.evs@1.0;
 
-import types;
-
 
 /**
  * Represents a single camera and is the primary interface for capturing images.
@@ -28,6 +26,9 @@
      * Returns basic information about the EVS display provided by the system.
      *
      * See the description of the DisplayDesc structure for details.
+     *
+     * @return info The description of this display.  Please see the description
+     *              of the DisplayDesc structure for details.
      */
      getDisplayInfo() generates (DisplayDesc info);
 
@@ -42,6 +43,9 @@
      * video. When the display is no longer required, the client is expected to request
      * the NOT_VISIBLE state after passing the last video frame.
      * Returns INVALID_ARG if the requested state is not a recognized value.
+     *
+     * @param  state  Desired new DisplayState.
+     * @return result EvsResult::OK is returned if this call is successful.
      */
      setDisplayState(DisplayState state) generates (EvsResult result);
 
@@ -54,6 +58,8 @@
      * the logic responsible for changing display states should generally live above
      * the device layer, making it undesirable for the HAL implementation to spontaneously
      * change display states.
+     *
+     * @return state Current DisplayState of this Display.
      */
      getDisplayState() generates (DisplayState state);
 
@@ -61,9 +67,11 @@
     /**
      * This call returns a handle to a frame buffer associated with the display.
      *
-     * The returned buffer may be locked and written to by software and/or GL. This buffer
-     * must be returned via a call to returnTargetBufferForDisplay() even if the
-     * display is no longer visible.
+     * @return buffer A handle to a frame buffer.  The returned buffer may be
+     *                locked and written to by software and/or GL.  This buffer
+     *                must be returned via a call to
+     *                returnTargetBufferForDisplay() even if the display is no
+     *                longer visible.
      */
      getTargetBuffer() generates (BufferDesc buffer);
 
@@ -75,6 +83,9 @@
      * There is no maximum time the caller may hold onto the buffer before making this
      * call. The buffer may be returned at any time and in any DisplayState, but all
      * buffers are expected to be returned before the IEvsDisplay interface is destroyed.
+     *
+     * @param  buffer A buffer handle to the frame that is ready for display.
+     * @return result EvsResult::OK is returned if this call is successful.
      */
     returnTargetBufferForDisplay(BufferDesc buffer) generates (EvsResult result);
 };
diff --git a/automotive/evs/1.0/IEvsEnumerator.hal b/automotive/evs/1.0/IEvsEnumerator.hal
index ee51e7e..e5633df 100644
--- a/automotive/evs/1.0/IEvsEnumerator.hal
+++ b/automotive/evs/1.0/IEvsEnumerator.hal
@@ -16,7 +16,6 @@
 
 package android.hardware.automotive.evs@1.0;
 
-import types;
 import IEvsCamera;
 import IEvsDisplay;
 
@@ -28,6 +27,8 @@
 
     /**
      * Returns a list of all EVS cameras available to the system
+     *
+     * @return cameras A list of cameras availale for EVS service.
      */
     getCameraList() generates (vec<CameraDesc> cameras);
 
@@ -37,9 +38,9 @@
      * Given a camera's unique cameraId from CameraDesc, returns the
      * IEvsCamera interface associated with the specified camera. When
      * done using the camera, the caller may release it by calling closeCamera().
-     * Note: Reliance on the sp<> going out of scope is not recommended
-     * because the resources may not be released right away due to asynchronos
-     * behavior in the hardware binder (ref b/36122635).
+     *
+     * @param  cameraId  A unique identifier of the camera.
+     * @return carCamera EvsCamera object associated with a given cameraId.
      */
     openCamera(string cameraId) generates (IEvsCamera carCamera);
 
@@ -48,6 +49,8 @@
      *
      * When the IEvsCamera object is no longer required, it must be released.
      * NOTE: Video streaming must be cleanly stopped before making this call.
+     *
+     * @param  carCamera EvsCamera object to be closed.
      */
     closeCamera(IEvsCamera carCamera);
 
@@ -60,8 +63,8 @@
      * the old instance shall be closed and give the new caller exclusive
      * access.
      * When done using the display, the caller may release it by calling closeDisplay().
-     * TODO(b/36122635) Reliance on the sp<> going out of scope is not recommended because the
-     * resources may not be released right away due to asynchronos behavior in the hardware binder.
+     *
+     * @return display EvsDisplay object to be used.
      */
     openDisplay() generates (IEvsDisplay display);
 
@@ -70,6 +73,8 @@
      *
      * When the IEvsDisplay object is no longer required, it must be released.
      * NOTE: All buffers must have been returned to the display before making this call.
+     *
+     * @param  display EvsDisplay object to be closed.
      */
     closeDisplay(IEvsDisplay display);
 
@@ -80,6 +85,8 @@
      * the actual state of the active display.  This call is replicated on the IEvsEnumerator
      * interface in order to allow secondary clients to monitor the state of the EVS display
      * without acquiring exclusive ownership of the display.
+     *
+     * @return state Current DisplayState of this Display.
      */
     getDisplayState() generates (DisplayState state);
 };
diff --git a/automotive/evs/1.0/default/android.hardware.automotive.evs@1.0-service.rc b/automotive/evs/1.0/default/android.hardware.automotive.evs@1.0-service.rc
index 117c249..8dcd969 100644
--- a/automotive/evs/1.0/default/android.hardware.automotive.evs@1.0-service.rc
+++ b/automotive/evs/1.0/default/android.hardware.automotive.evs@1.0-service.rc
@@ -2,3 +2,4 @@
     class hal
     user automotive_evs
     group automotive_evs
+    disabled # do not start automatically
diff --git a/automotive/evs/1.0/types.hal b/automotive/evs/1.0/types.hal
index 7cebf6d..1efd5eb 100644
--- a/automotive/evs/1.0/types.hal
+++ b/automotive/evs/1.0/types.hal
@@ -24,8 +24,15 @@
  * EVS camera in the system.
  */
 struct CameraDesc {
+    /* Unique identifier for camera devices.  This may be a path to detected
+     * camera device; for example, "/dev/video0".
+     */
     string      cameraId;
-    uint32_t    vendorFlags;    // Opaque value from driver
+
+    /* Opaque value from driver.  Vendor may use this field to store additional
+     * information; for example, sensor and bridge chip id.
+     */
+    uint32_t    vendorFlags;
 };
 
 
@@ -38,8 +45,11 @@
  * presentation device.
  */
 struct DisplayDesc {
+    /* Unique identifier for the display */
     string      displayId;
-    uint32_t    vendorFlags;    // Opaque value from driver
+
+    /* Opaque value from driver */
+    uint32_t    vendorFlags;
 };
 
 
@@ -56,14 +66,31 @@
  *        Specifically consider if format and/or usage should become enumerated types.
  */
 struct BufferDesc {
-    uint32_t    width;      // Units of pixels
-    uint32_t    height;     // Units of pixels
-    uint32_t    stride;     // Units of pixels to match gralloc
-    uint32_t    pixelSize;  // Units of bytes
-    uint32_t    format;     // May contain values from android_pixel_format_t
-    uint32_t    usage;      // May contain values from from Gralloc.h
-    uint32_t    bufferId;   // Opaque value from driver
-    handle      memHandle;  // gralloc memory buffer handle
+    /* A frame width in the units of pixels */
+    uint32_t    width;
+
+    /* A frame height in the units of pixels */
+    uint32_t    height;
+
+    /* A frame stride in the units of pixels, to match gralloc */
+    uint32_t    stride;
+
+    /* The size of a pixel in the units of bytes */
+    uint32_t    pixelSize;
+
+    /* The image format of the frame; may contain values from
+     * android_pixel_format_t
+     */
+    uint32_t    format;
+
+    /* May contain values from Gralloc.h */
+    uint32_t    usage;
+
+    /* Opaque value from driver */
+    uint32_t    bufferId;
+
+    /* Gralloc memory buffer handle */
+    handle      memHandle;
 };
 
 
@@ -77,12 +104,23 @@
  * presentation device.
  */
 enum DisplayState : uint32_t {
-    NOT_OPEN = 0,           // Display has not been requested by any application
-    NOT_VISIBLE,            // Display is inhibited
-    VISIBLE_ON_NEXT_FRAME,  // Will become visible with next frame
-    VISIBLE,                // Display is currently active
-    DEAD,                   // Driver is in an undefined state.  Interface should be closed.
-    NUM_STATES              // Must be last
+    /* Display has not been requested by any application yet */
+    NOT_OPEN = 0,
+
+    /* Display is inhibited */
+    NOT_VISIBLE,
+
+    /* Will become visible with next frame */
+    VISIBLE_ON_NEXT_FRAME,
+
+    /* Display is currently active */
+    VISIBLE,
+
+    /* Driver is in an undefined state.  Interface should be closed. */
+    DEAD,
+
+    /* Must be the last */
+    NUM_STATES
 };
 
 
diff --git a/automotive/evs/1.0/vts/functional/Android.bp b/automotive/evs/1.0/vts/functional/Android.bp
index 2ef33fd..8988bfd 100644
--- a/automotive/evs/1.0/vts/functional/Android.bp
+++ b/automotive/evs/1.0/vts/functional/Android.bp
@@ -19,13 +19,15 @@
     srcs: [
         "VtsHalEvsV1_0TargetTest.cpp",
         "FrameHandler.cpp",
-        "FormatConvert.cpp"
     ],
     defaults: ["VtsHalTargetTestDefaults"],
     shared_libs: [
         "libui",
     ],
-    static_libs: ["android.hardware.automotive.evs@1.0"],
+    static_libs: [
+        "android.hardware.automotive.evs@1.0",
+        "android.hardware.automotive.evs@common-default-lib",
+    ],
     test_suites: ["general-tests"],
     cflags: [
         "-O0",
diff --git a/automotive/evs/1.0/vts/functional/FormatConvert.h b/automotive/evs/1.0/vts/functional/FormatConvert.h
deleted file mode 100644
index 4a94f99..0000000
--- a/automotive/evs/1.0/vts/functional/FormatConvert.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef EVS_VTS_FORMATCONVERT_H
-#define EVS_VTS_FORMATCONVERT_H
-
-#include <queue>
-#include <stdint.h>
-
-
-// Given an image buffer in NV21 format (HAL_PIXEL_FORMAT_YCRCB_420_SP), output 32bit RGBx/BGRx
-// values.  The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
-// U/V array.  It assumes an even width and height for the overall image, and a horizontal
-// stride that is an even multiple of 16 bytes for both the Y and UV arrays.
-void copyNV21toRGB32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels,
-                     bool bgrxFormat = false);
-
-void copyNV21toBGR32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels);
-
-
-// Given an image buffer in YV12 format (HAL_PIXEL_FORMAT_YV12), output 32bit RGBx/BGRx values.
-// The YV12 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 U array, followed
-// by another 1/2 x 1/2 V array.  It assumes an even width and height for the overall image,
-// and a horizontal stride that is an even multiple of 16 bytes for each of the Y, U,
-// and V arrays.
-void copyYV12toRGB32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels,
-                     bool bgrxFormat = false);
-
-void copyYV12toBGR32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels);
-
-// Given an image buffer in YUYV format (HAL_PIXEL_FORMAT_YCBCR_422_I), output 32bit RGBx/BGRx
-// values.  The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
-// U/V array.  It assumes an even width and height for the overall image, and a horizontal
-// stride that is an even multiple of 16 bytes for both the Y and UV arrays.
-void copyYUYVtoRGB32(unsigned width, unsigned height,
-                     uint8_t* src, unsigned srcStrideBytes,
-                     uint32_t* dst, unsigned dstStrideBytes,
-                     bool bgrxFormat = false);
-
-void copyYUYVtoBGR32(unsigned width, unsigned height,
-                     uint8_t* src, unsigned srcStrideBytes,
-                     uint32_t* dst, unsigned dstStrideBytes);
-
-
-// Given an simple rectangular image buffer with an integer number of bytes per pixel,
-// copy the pixel values into a new rectangular buffer (potentially with a different stride).
-// This is typically used to copy RGBx data into an RGBx output buffer.
-void copyMatchedInterleavedFormats(unsigned width, unsigned height,
-                                   void* src, unsigned srcStridePixels,
-                                   void* dst, unsigned dstStridePixels,
-                                   unsigned pixelSize);
-
-#endif // EVS_VTS_FORMATCONVERT_H
diff --git a/automotive/evs/1.0/vts/functional/FrameHandler.cpp b/automotive/evs/1.0/vts/functional/FrameHandler.cpp
index bc3790f..6a01a44 100644
--- a/automotive/evs/1.0/vts/functional/FrameHandler.cpp
+++ b/automotive/evs/1.0/vts/functional/FrameHandler.cpp
@@ -240,46 +240,47 @@
     tgt->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)&tgtPixels);
 
     if (srcPixels && tgtPixels) {
+        using namespace ::android::hardware::automotive::evs::common;
         if (tgtBuffer.format == HAL_PIXEL_FORMAT_RGBA_8888) {
             if (srcBuffer.format == HAL_PIXEL_FORMAT_YCRCB_420_SP) {   // 420SP == NV21
-                copyNV21toRGB32(width, height,
-                                srcPixels,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyNV21toRGB32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == HAL_PIXEL_FORMAT_YV12) { // YUV_420P == YV12
-                copyYV12toRGB32(width, height,
-                                srcPixels,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyYV12toRGB32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == HAL_PIXEL_FORMAT_YCBCR_422_I) { // YUYV
-                copyYUYVtoRGB32(width, height,
-                                srcPixels, srcBuffer.stride,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyYUYVtoRGB32(width, height,
+                                       srcPixels, srcBuffer.stride,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == tgtBuffer.format) {  // 32bit RGBA
-                copyMatchedInterleavedFormats(width, height,
-                                              srcPixels, srcBuffer.stride,
-                                              tgtPixels, tgtBuffer.stride,
-                                              tgtBuffer.pixelSize);
+                Utils::copyMatchedInterleavedFormats(width, height,
+                                                     srcPixels, srcBuffer.stride,
+                                                     tgtPixels, tgtBuffer.stride,
+                                                     tgtBuffer.pixelSize);
             } else {
                 ALOGE("Camera buffer format is not supported");
                 success = false;
             }
         } else if (tgtBuffer.format == HAL_PIXEL_FORMAT_BGRA_8888) {
             if (srcBuffer.format == HAL_PIXEL_FORMAT_YCRCB_420_SP) {   // 420SP == NV21
-                copyNV21toBGR32(width, height,
-                                srcPixels,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyNV21toBGR32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == HAL_PIXEL_FORMAT_YV12) { // YUV_420P == YV12
-                copyYV12toBGR32(width, height,
-                                srcPixels,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyYV12toBGR32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == HAL_PIXEL_FORMAT_YCBCR_422_I) { // YUYV
-                copyYUYVtoBGR32(width, height,
-                                srcPixels, srcBuffer.stride,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyYUYVtoBGR32(width, height,
+                                       srcPixels, srcBuffer.stride,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == tgtBuffer.format) {  // 32bit RGBA
-                copyMatchedInterleavedFormats(width, height,
-                                              srcPixels, srcBuffer.stride,
-                                              tgtPixels, tgtBuffer.stride,
-                                              tgtBuffer.pixelSize);
+                Utils::copyMatchedInterleavedFormats(width, height,
+                                                     srcPixels, srcBuffer.stride,
+                                                     tgtPixels, tgtBuffer.stride,
+                                                     tgtBuffer.pixelSize);
             } else {
                 ALOGE("Camera buffer format is not supported");
                 success = false;
diff --git a/automotive/evs/1.1/Android.bp b/automotive/evs/1.1/Android.bp
new file mode 100644
index 0000000..c850c91
--- /dev/null
+++ b/automotive/evs/1.1/Android.bp
@@ -0,0 +1,24 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.automotive.evs@1.1",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IEvsCamera.hal",
+        "IEvsCameraStream.hal",
+        "IEvsEnumerator.hal",
+    ],
+    interfaces: [
+        "android.hardware.automotive.evs@1.0",
+        "android.hardware.camera.device@3.2",
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.common@1.1",
+        "android.hardware.graphics.common@1.2",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: false,
+}
diff --git a/automotive/evs/1.1/IEvsCamera.hal b/automotive/evs/1.1/IEvsCamera.hal
new file mode 100644
index 0000000..975b6c6
--- /dev/null
+++ b/automotive/evs/1.1/IEvsCamera.hal
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs@1.1;
+
+import @1.0::IEvsCamera;
+import @1.0::IEvsDisplay;
+import @1.0::EvsResult;
+import IEvsCameraStream;
+
+/**
+ * Represents a single camera and is the primary interface for capturing images.
+ */
+interface IEvsCamera extends @1.0::IEvsCamera {
+    /**
+     * Returns the description of this camera.
+     *
+     * @return info The description of this camera.  This must be the same value as
+     *              reported by EvsEnumerator::getCameraList_1_1().
+     */
+    getCameraInfo_1_1() generates (CameraDesc info);
+
+    /**
+     * Requests to pause EVS camera stream events.
+     *
+     * Like stopVideoStream(), events may continue to arrive for some time
+     * after this call returns. Delivered frame buffers must be returned.
+     *
+     * @return result EvsResult::OK is returned if this call is successful.
+     */
+    pauseVideoStream() generates (EvsResult result);
+
+    /**
+     * Requests to resume EVS camera stream.
+     *
+     * @return result EvsResult::OK is returned if this call is successful.
+     */
+    resumeVideoStream() generates (EvsResult result);
+
+    /**
+     * Returns a frame that was delivered by to the IEvsCameraStream.
+     *
+     * When done consuming a frame delivered to the IEvsCameraStream
+     * interface, it must be returned to the IEvsCamera for reuse.
+     * A small, finite number of buffers are available (possibly as small
+     * as one), and if the supply is exhausted, no further frames may be
+     * delivered until a buffer is returned.
+     *
+     * @param  buffer A buffer to be returned.
+     * @return result Return EvsResult::OK if this call is successful.
+     */
+    doneWithFrame_1_1(BufferDesc buffer) generates (EvsResult result);
+
+    /**
+     * Requests to be a master client.
+     *
+     * When multiple clients subscribe to a single camera hardware and one of
+     * them adjusts a camera parameter such as the contrast, it may disturb
+     * other clients' operations.  Therefore, the client must call this method
+     * to be a master client.  Once it becomes a master, it will be able to
+     * change camera parameters until either it dies or explicitly gives up the
+     * role.
+     *
+     * @return result EvsResult::OK if a master role is granted.
+     *                EvsResult::OWNERSHIP_LOST if there is already a
+     *                master client.
+     */
+    setMaster() generates (EvsResult result);
+
+    /**
+     * Sets to be a master client forcibly.
+     *
+     * The client, which owns the display, has a high priority and can take over
+     * a master role from other clients without the display.
+     *
+     * @param  display IEvsDisplay handle.  If a given display is in either
+     *                 NOT_VISIBLE, VISIBLE_ON_NEXT_FRAME, or VISIBLE state, the
+     *                 calling client is considered as the high priority client
+     *                 and therefore allowed to take over a master role from
+     *                 existing master client.
+     *
+     * @return result  EvsResult::OK if a master role is granted.
+     *                 EvsResult::INVALID_ARG if a given display handle is null
+     *                 or in valid states.
+     */
+    forceMaster(IEvsDisplay display) generates (EvsResult result);
+
+    /**
+     * Retires from a master client role.
+     *
+     * @return result EvsResult::OK if this call is successful.
+     *                EvsResult::INVALID_ARG if the caller client is not a
+     *                master client.
+     */
+    unsetMaster() generates (EvsResult result);
+
+    /**
+     * Retrieves a list of parameters this camera supports.
+     *
+     * @return params A list of CameraParam that this camera supports.
+     */
+    getParameterList() generates (vec<CameraParam> params);
+
+    /**
+     * Requests a valid value range of a camera parameter
+     *
+     * @param  id    The identifier of camera parameter, CameraParam enum.
+     *
+     * @return min   The lower bound of valid parameter value range.
+     * @return max   The upper bound of valid parameter value range.
+     * @return step  The resolution of values in valid range.
+     */
+    getIntParameterRange(CameraParam id)
+        generates (int32_t min, int32_t max, int32_t step);
+
+    /**
+     * Requests to set a camera parameter.  Only a request from the master
+     * client will be processed successfully.
+     *
+     * @param  id             The identifier of camera parameter, CameraParam enum.
+     *         value          A desired parameter value.
+     * @return result         EvsResult::OK if it succeeds to set a parameter.
+     *                        EvsResult::INVALID_ARG if either the request is
+     *                        not made by a master client, or a requested
+     *                        parameter is not supported.
+     *                        EvsResult::UNDERLYING_SERVICE_ERROR if it fails to
+     *                        program a value by any other reason.
+     *         effectiveValue A programmed parameter value.  This may differ
+     *                        from what the client gives if, for example, the
+     *                        driver does not support a target parameter.
+     */
+    setIntParameter(CameraParam id, int32_t value)
+        generates (EvsResult result, int32_t effectiveValue);
+
+    /**
+     * Retrieves a value of given camera parameter.
+     *
+     * @param  id     The identifier of camera parameter, CameraParam enum.
+     * @return result EvsResult::OK if it succeeds to read a parameter.
+     *                EvsResult::INVALID_ARG if either a requested parameter is
+     *                not supported.
+     *         value  A value of requested camera parameter.
+     */
+    getIntParameter(CameraParam id) generates(EvsResult result, int32_t value);
+};
diff --git a/automotive/evs/1.1/IEvsCameraStream.hal b/automotive/evs/1.1/IEvsCameraStream.hal
new file mode 100644
index 0000000..9e4ea19
--- /dev/null
+++ b/automotive/evs/1.1/IEvsCameraStream.hal
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs@1.1;
+
+import @1.0::IEvsCameraStream;
+import @1.1::BufferDesc;
+import @1.1::EvsEvent;
+
+/**
+ * Implemented on client side to receive asynchronous streaming event deliveries.
+ */
+interface IEvsCameraStream extends @1.0::IEvsCameraStream {
+
+    /**
+     * Receives calls from the HAL each time a video frame is ready for inspection.
+     * Buffer handles received by this method must be returned via calls to
+     * IEvsCamera::doneWithFrame_1_1(). When the video stream is stopped via a call
+     * to IEvsCamera::stopVideoStream(), this callback may continue to happen for
+     * some time as the pipeline drains. Each frame must still be returned.
+     * When the last frame in the stream has been delivered, STREAM_STOPPED
+     * event must be delivered.  No further frame deliveries may happen
+     * thereafter.
+     *
+     * @param buffer a buffer descriptor of a delivered image frame.
+     */
+    oneway deliverFrame_1_1(BufferDesc buffer);
+
+    /**
+     * Receives calls from the HAL each time an event happens.
+     *
+     * @param  event EVS event with possible event information.
+     */
+    oneway notify(EvsEvent event);
+};
diff --git a/automotive/evs/1.1/IEvsEnumerator.hal b/automotive/evs/1.1/IEvsEnumerator.hal
new file mode 100644
index 0000000..1695821
--- /dev/null
+++ b/automotive/evs/1.1/IEvsEnumerator.hal
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs@1.1;
+
+import IEvsCamera;
+import @1.0::IEvsEnumerator;
+import @1.0::EvsResult;
+import android.hardware.camera.device@3.2::Stream;
+
+/**
+ * Provides the mechanism for EVS camera discovery
+ */
+interface IEvsEnumerator extends @1.0::IEvsEnumerator {
+    /**
+     * Returns a list of all EVS cameras available to the system
+     *
+     * @return cameras A list of cameras availale for EVS service.
+     */
+    getCameraList_1_1() generates (vec<CameraDesc> cameras);
+
+    /**
+     * Gets the IEvsCamera associated with a cameraId from a CameraDesc
+     *
+     * Given a camera's unique cameraId from CameraDesc, returns the
+     * IEvsCamera interface associated with the specified camera. When
+     * done using the camera, the caller may release it by calling closeCamera().
+     *
+     * @param  cameraId  A unique identifier of the camera.
+     * @param  streamCfg A stream configuration the client wants to use.
+     * @return evsCamera EvsCamera object associated with a given cameraId.
+     *                   Returned object would be null if a camera device does
+     *                   not support a given stream configuration or is already
+     *                   configured differently by another client.
+     */
+    openCamera_1_1(string cameraId, Stream streamCfg) generates (IEvsCamera evsCamera);
+};
diff --git a/automotive/evs/1.1/default/Android.bp b/automotive/evs/1.1/default/Android.bp
new file mode 100644
index 0000000..41cb426
--- /dev/null
+++ b/automotive/evs/1.1/default/Android.bp
@@ -0,0 +1,47 @@
+cc_binary {
+    name: "android.hardware.automotive.evs@1.1-service",
+    defaults: ["hidl_defaults"],
+    proprietary: true,
+    relative_install_path: "hw",
+    srcs: [
+        "service.cpp",
+        "EvsCamera.cpp",
+        "EvsEnumerator.cpp",
+        "EvsDisplay.cpp",
+        "ConfigManager.cpp",
+        "ConfigManagerUtil.cpp",
+    ],
+    init_rc: ["android.hardware.automotive.evs@1.1-service.rc"],
+
+    shared_libs: [
+        "android.hardware.automotive.evs@1.0",
+        "android.hardware.automotive.evs@1.1",
+        "android.hardware.camera.device@3.2",
+        "libbase",
+        "libbinder",
+        "liblog",
+        "libhardware",
+        "libhidlbase",
+        "liblog",
+        "libui",
+        "libutils",
+        "libcamera_metadata",
+        "libtinyxml2",
+    ],
+
+    cflags: [
+        "-O0",
+        "-g",
+    ],
+
+    required: [
+        "evs_default_configuration.xml",
+    ],
+}
+
+prebuilt_etc {
+    name: "evs_default_configuration.xml",
+
+    src: "resources/evs_default_configuration.xml",
+    sub_dir: "automotive/evs",
+}
diff --git a/automotive/evs/1.1/default/ConfigManager.cpp b/automotive/evs/1.1/default/ConfigManager.cpp
new file mode 100644
index 0000000..96a2f98
--- /dev/null
+++ b/automotive/evs/1.1/default/ConfigManager.cpp
@@ -0,0 +1,487 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sstream>
+#include <fstream>
+#include <thread>
+
+#include <hardware/gralloc.h>
+#include <utils/SystemClock.h>
+#include <android/hardware/camera/device/3.2/ICameraDevice.h>
+
+#include "ConfigManager.h"
+
+using ::android::hardware::camera::device::V3_2::StreamRotation;
+
+
+ConfigManager::~ConfigManager() {
+    /* Nothing to do */
+}
+
+
+void ConfigManager::readCameraInfo(const XMLElement * const aCameraElem) {
+    if (aCameraElem == nullptr) {
+        ALOGW("XML file does not have required camera element");
+        return;
+    }
+
+    const XMLElement *curElem = aCameraElem->FirstChildElement();
+    while (curElem != nullptr) {
+        if (!strcmp(curElem->Name(), "group")) {
+            /* camera group identifier */
+            const char *group_id = curElem->FindAttribute("group_id")->Value();
+
+            /* create CameraGroup */
+            unique_ptr<ConfigManager::CameraGroup> aCameraGroup(new ConfigManager::CameraGroup());
+
+            /* add a camera device to its group */
+            addCameraDevices(curElem->FindAttribute("device_id")->Value(), aCameraGroup);
+
+            /* a list of camera stream configurations */
+            const XMLElement *childElem =
+                curElem->FirstChildElement("caps")->FirstChildElement("stream");
+            while (childElem != nullptr) {
+                /* read 5 attributes */
+                const XMLAttribute *idAttr     = childElem->FindAttribute("id");
+                const XMLAttribute *widthAttr  = childElem->FindAttribute("width");
+                const XMLAttribute *heightAttr = childElem->FindAttribute("height");
+                const XMLAttribute *fmtAttr    = childElem->FindAttribute("format");
+                const XMLAttribute *fpsAttr    = childElem->FindAttribute("framerate");
+
+                const int32_t id = stoi(idAttr->Value());
+                int32_t framerate = 0;
+                if (fpsAttr != nullptr) {
+                    framerate = stoi(fpsAttr->Value());
+                }
+
+                int32_t pixFormat;
+                if (ConfigManagerUtil::convertToPixelFormat(fmtAttr->Value(),
+                                                            pixFormat)) {
+                    RawStreamConfiguration cfg = {
+                        id,
+                        stoi(widthAttr->Value()),
+                        stoi(heightAttr->Value()),
+                        pixFormat,
+                        ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT,
+                        framerate
+                    };
+                    aCameraGroup->streamConfigurations[id] = cfg;
+                }
+
+                childElem = childElem->NextSiblingElement("stream");
+            }
+
+            /* camera group synchronization */
+            const char *sync = curElem->FindAttribute("synchronized")->Value();
+            aCameraGroup->synchronized =
+                static_cast<bool>(strcmp(sync, "false"));
+
+            /* add a group to hash map */
+            mCameraGroups[group_id] = std::move(aCameraGroup);
+        } else if (!strcmp(curElem->Name(), "device")) {
+            /* camera unique identifier */
+            const char *id = curElem->FindAttribute("id")->Value();
+
+            /* camera mount location */
+            const char *pos = curElem->FindAttribute("position")->Value();
+
+            /* store read camera module information */
+            mCameraInfo[id] = readCameraDeviceInfo(curElem);
+
+            /* assign a camera device to a position group */
+            mCameraPosition[pos].emplace(id);
+        } else {
+            /* ignore other device types */
+            ALOGD("Unknown element %s is ignored", curElem->Name());
+        }
+
+        curElem = curElem->NextSiblingElement();
+    }
+}
+
+
+unique_ptr<ConfigManager::CameraInfo>
+ConfigManager::readCameraDeviceInfo(const XMLElement *aDeviceElem) {
+    if (aDeviceElem == nullptr) {
+        return nullptr;
+    }
+
+    /* create a CameraInfo to be filled */
+    unique_ptr<ConfigManager::CameraInfo> aCamera(new ConfigManager::CameraInfo());
+
+    /* size information to allocate camera_metadata_t */
+    size_t totalEntries = 0;
+    size_t totalDataSize = 0;
+
+    /* read device capabilities */
+    totalEntries +=
+        readCameraCapabilities(aDeviceElem->FirstChildElement("caps"),
+                               aCamera,
+                               totalDataSize);
+
+
+    /* read camera metadata */
+    totalEntries +=
+        readCameraMetadata(aDeviceElem->FirstChildElement("characteristics"),
+                           aCamera,
+                           totalDataSize);
+
+    /* construct camera_metadata_t */
+    if (!constructCameraMetadata(aCamera, totalEntries, totalDataSize)) {
+        ALOGW("Either failed to allocate memory or "
+              "allocated memory was not large enough");
+    }
+
+    return aCamera;
+}
+
+
+size_t ConfigManager::readCameraCapabilities(const XMLElement * const aCapElem,
+                                             unique_ptr<ConfigManager::CameraInfo> &aCamera,
+                                             size_t &dataSize) {
+    if (aCapElem == nullptr) {
+        return 0;
+    }
+
+    string token;
+    const XMLElement *curElem = nullptr;
+
+    /* a list of supported camera parameters/controls */
+    curElem = aCapElem->FirstChildElement("supported_controls");
+    if (curElem != nullptr) {
+        const XMLElement *ctrlElem = curElem->FirstChildElement("control");
+        while (ctrlElem != nullptr) {
+            const char *nameAttr = ctrlElem->FindAttribute("name")->Value();;
+            const int32_t minVal = stoi(ctrlElem->FindAttribute("min")->Value());
+            const int32_t maxVal = stoi(ctrlElem->FindAttribute("max")->Value());
+
+            int32_t stepVal = 1;
+            const XMLAttribute *stepAttr = ctrlElem->FindAttribute("step");
+            if (stepAttr != nullptr) {
+                stepVal = stoi(stepAttr->Value());
+            }
+
+            CameraParam aParam;
+            if (ConfigManagerUtil::convertToEvsCameraParam(nameAttr,
+                                                           aParam)) {
+                aCamera->controls.emplace(
+                    aParam,
+                    make_tuple(minVal, maxVal, stepVal)
+                );
+            }
+
+            ctrlElem = ctrlElem->NextSiblingElement("control");
+        }
+    }
+
+    /* a list of camera stream configurations */
+    curElem = aCapElem->FirstChildElement("stream");
+    while (curElem != nullptr) {
+        /* read 5 attributes */
+        const XMLAttribute *idAttr     = curElem->FindAttribute("id");
+        const XMLAttribute *widthAttr  = curElem->FindAttribute("width");
+        const XMLAttribute *heightAttr = curElem->FindAttribute("height");
+        const XMLAttribute *fmtAttr    = curElem->FindAttribute("format");
+        const XMLAttribute *fpsAttr    = curElem->FindAttribute("framerate");
+
+        const int32_t id = stoi(idAttr->Value());
+        int32_t framerate = 0;
+        if (fpsAttr != nullptr) {
+            framerate = stoi(fpsAttr->Value());
+        }
+
+        int32_t pixFormat;
+        if (ConfigManagerUtil::convertToPixelFormat(fmtAttr->Value(),
+                                                    pixFormat)) {
+            RawStreamConfiguration cfg = {
+                id,
+                stoi(widthAttr->Value()),
+                stoi(heightAttr->Value()),
+                pixFormat,
+                ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT,
+                framerate
+            };
+            aCamera->streamConfigurations[id] = cfg;
+        }
+
+        curElem = curElem->NextSiblingElement("stream");
+    }
+
+    dataSize = calculate_camera_metadata_entry_data_size(
+                   get_camera_metadata_tag_type(
+                       ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS
+                   ),
+                   aCamera->streamConfigurations.size() * kStreamCfgSz
+               );
+
+    /* a single camera metadata entry contains multiple stream configurations */
+    return dataSize > 0 ? 1 : 0;
+}
+
+
+size_t ConfigManager::readCameraMetadata(const XMLElement * const aParamElem,
+                                       unique_ptr<ConfigManager::CameraInfo> &aCamera,
+                                       size_t &dataSize) {
+    if (aParamElem == nullptr) {
+        return 0;
+    }
+
+    const XMLElement *curElem = aParamElem->FirstChildElement("parameter");
+    size_t numEntries = 0;
+    camera_metadata_tag_t tag;
+    while (curElem != nullptr) {
+        if (!ConfigManagerUtil::convertToMetadataTag(curElem->FindAttribute("name")->Value(),
+                                                     tag)) {
+            switch(tag) {
+                case ANDROID_LENS_DISTORTION:
+                case ANDROID_LENS_POSE_ROTATION:
+                case ANDROID_LENS_POSE_TRANSLATION:
+                case ANDROID_LENS_INTRINSIC_CALIBRATION: {
+                    /* float[] */
+                    size_t count = 0;
+                    void   *data = ConfigManagerUtil::convertFloatArray(
+                                        curElem->FindAttribute("size")->Value(),
+                                        curElem->FindAttribute("value")->Value(),
+                                        count
+                                   );
+
+                    aCamera->cameraMetadata[tag] =
+                        make_pair(make_unique<void *>(data), count);
+
+                    ++numEntries;
+                    dataSize += calculate_camera_metadata_entry_data_size(
+                                    get_camera_metadata_tag_type(tag), count
+                                );
+
+                    break;
+                }
+
+                default:
+                    ALOGW("Parameter %s is not supported",
+                          curElem->FindAttribute("name")->Value());
+                    break;
+            }
+        }
+
+        curElem = curElem->NextSiblingElement("parameter");
+    }
+
+    return numEntries;
+}
+
+
+bool ConfigManager::constructCameraMetadata(unique_ptr<CameraInfo> &aCamera,
+                                            const size_t totalEntries,
+                                            const size_t totalDataSize) {
+    if (!aCamera->allocate(totalEntries, totalDataSize)) {
+        ALOGE("Failed to allocate memory for camera metadata");
+        return false;
+    }
+
+    const size_t numStreamConfigs = aCamera->streamConfigurations.size();
+    unique_ptr<int32_t[]> data(new int32_t[kStreamCfgSz * numStreamConfigs]);
+    int32_t *ptr = data.get();
+    for (auto &cfg : aCamera->streamConfigurations) {
+        for (auto i = 0; i < kStreamCfgSz; ++i) {
+          *ptr++ = cfg.second[i];
+        }
+    }
+    int32_t err = add_camera_metadata_entry(aCamera->characteristics,
+                                            ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS,
+                                            data.get(),
+                                            numStreamConfigs * kStreamCfgSz);
+
+    if (err) {
+        ALOGE("Failed to add stream configurations to metadata, ignored");
+        return false;
+    }
+
+    bool success = true;
+    for (auto &[tag, entry] : aCamera->cameraMetadata) {
+        /* try to add new camera metadata entry */
+        int32_t err = add_camera_metadata_entry(aCamera->characteristics,
+                                                tag,
+                                                entry.first.get(),
+                                                entry.second);
+        if (err) {
+            ALOGE("Failed to add an entry with a tag 0x%X", tag);
+
+            /* may exceed preallocated capacity */
+            ALOGE("Camera metadata has %ld / %ld entries and %ld / %ld bytes are filled",
+                  (long)get_camera_metadata_entry_count(aCamera->characteristics),
+                  (long)get_camera_metadata_entry_capacity(aCamera->characteristics),
+                  (long)get_camera_metadata_data_count(aCamera->characteristics),
+                  (long)get_camera_metadata_data_capacity(aCamera->characteristics));
+            ALOGE("\tCurrent metadata entry requires %ld bytes",
+                  (long)calculate_camera_metadata_entry_data_size(tag, entry.second));
+
+            success = false;
+        }
+    }
+
+    ALOGV("Camera metadata has %ld / %ld entries and %ld / %ld bytes are filled",
+          (long)get_camera_metadata_entry_count(aCamera->characteristics),
+          (long)get_camera_metadata_entry_capacity(aCamera->characteristics),
+          (long)get_camera_metadata_data_count(aCamera->characteristics),
+          (long)get_camera_metadata_data_capacity(aCamera->characteristics));
+
+    return success;
+}
+
+
+void ConfigManager::readSystemInfo(const XMLElement * const aSysElem) {
+    if (aSysElem == nullptr) {
+        return;
+    }
+
+    /*
+     * Please note that this function assumes that a given system XML element
+     * and its child elements follow DTD.  If it does not, it will cause a
+     * segmentation fault due to the failure of finding expected attributes.
+     */
+
+    /* read number of cameras available in the system */
+    const XMLElement *xmlElem = aSysElem->FirstChildElement("num_cameras");
+    if (xmlElem != nullptr) {
+        mSystemInfo.numCameras =
+            stoi(xmlElem->FindAttribute("value")->Value());
+    }
+}
+
+
+void ConfigManager::readDisplayInfo(const XMLElement * const aDisplayElem) {
+    if (aDisplayElem == nullptr) {
+        ALOGW("XML file does not have required camera element");
+        return;
+    }
+
+    const XMLElement *curDev = aDisplayElem->FirstChildElement("device");
+    while (curDev != nullptr) {
+        const char *id = curDev->FindAttribute("id")->Value();
+        //const char *pos = curDev->FirstAttribute("position")->Value();
+
+        unique_ptr<DisplayInfo> dpy(new DisplayInfo());
+        if (dpy == nullptr) {
+            ALOGE("Failed to allocate memory for DisplayInfo");
+            return;
+        }
+
+        const XMLElement *cap = curDev->FirstChildElement("caps");
+        if (cap != nullptr) {
+            const XMLElement *curStream = cap->FirstChildElement("stream");
+            while (curStream != nullptr) {
+                /* read 4 attributes */
+                const XMLAttribute *idAttr     = curStream->FindAttribute("id");
+                const XMLAttribute *widthAttr  = curStream->FindAttribute("width");
+                const XMLAttribute *heightAttr = curStream->FindAttribute("height");
+                const XMLAttribute *fmtAttr    = curStream->FindAttribute("format");
+
+                const int32_t id = stoi(idAttr->Value());
+                int32_t pixFormat;
+                if (ConfigManagerUtil::convertToPixelFormat(fmtAttr->Value(),
+                                                            pixFormat)) {
+                    RawStreamConfiguration cfg = {
+                        id,
+                        stoi(widthAttr->Value()),
+                        stoi(heightAttr->Value()),
+                        pixFormat,
+                        ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_INPUT,
+                        0   // unused
+                    };
+                    dpy->streamConfigurations[id] = cfg;
+                }
+
+                curStream = curStream->NextSiblingElement("stream");
+            }
+        }
+
+        mDisplayInfo[id] = std::move(dpy);
+        curDev = curDev->NextSiblingElement("device");
+    }
+
+    return;
+}
+
+
+bool ConfigManager::readConfigDataFromXML() noexcept {
+    XMLDocument xmlDoc;
+
+    const int64_t parsingStart = android::elapsedRealtimeNano();
+
+    /* load and parse a configuration file */
+    xmlDoc.LoadFile(mConfigFilePath);
+    if (xmlDoc.ErrorID() != XML_SUCCESS) {
+        ALOGE("Failed to load and/or parse a configuration file, %s", xmlDoc.ErrorStr());
+        return false;
+    }
+
+    /* retrieve the root element */
+    const XMLElement *rootElem = xmlDoc.RootElement();
+    if (strcmp(rootElem->Name(), "configuration")) {
+        ALOGE("A configuration file is not in the required format.  "
+              "See /etc/automotive/evs/evs_configuration.dtd");
+        return false;
+    }
+
+    /*
+     * parse camera information; this needs to be done before reading system
+     * information
+     */
+    readCameraInfo(rootElem->FirstChildElement("camera"));
+
+    /* parse system information */
+    readSystemInfo(rootElem->FirstChildElement("system"));
+
+    /* parse display information */
+    readDisplayInfo(rootElem->FirstChildElement("display"));
+
+    const int64_t parsingEnd = android::elapsedRealtimeNano();
+    ALOGI("Parsing configuration file takes %lf (ms)",
+          (double)(parsingEnd - parsingStart) / 1000000.0);
+
+
+    return true;
+}
+
+
+void ConfigManager::addCameraDevices(const char *devices,
+                                     unique_ptr<CameraGroup> &aGroup) {
+    stringstream device_list(devices);
+    string token;
+    while (getline(device_list, token, ',')) {
+        aGroup->devices.emplace(token);
+    }
+}
+
+
+std::unique_ptr<ConfigManager> ConfigManager::Create(const char *path) {
+    unique_ptr<ConfigManager> cfgMgr(new ConfigManager(path));
+
+    /*
+     * Read a configuration from XML file
+     *
+     * If this is too slow, ConfigManager::readConfigDataFromBinary() and
+     * ConfigManager::writeConfigDataToBinary()can serialize CameraInfo object
+     * to the filesystem and construct CameraInfo instead; this was
+     * evaluated as 10x faster.
+     */
+    if (!cfgMgr->readConfigDataFromXML()) {
+        return nullptr;
+    } else {
+        return cfgMgr;
+    }
+}
+
diff --git a/automotive/evs/1.1/default/ConfigManager.h b/automotive/evs/1.1/default/ConfigManager.h
new file mode 100644
index 0000000..0275f90
--- /dev/null
+++ b/automotive/evs/1.1/default/ConfigManager.h
@@ -0,0 +1,336 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CONFIG_MANAGER_H
+#define CONFIG_MANAGER_H
+
+#include <vector>
+#include <string>
+#include <unordered_map>
+#include <unordered_set>
+
+#include <tinyxml2.h>
+
+#include <system/camera_metadata.h>
+#include <log/log.h>
+#include <android/hardware/automotive/evs/1.1/types.h>
+
+#include "ConfigManagerUtil.h"
+
+using namespace std;
+using namespace tinyxml2;
+
+using ::android::hardware::hidl_vec;
+using ::android::hardware::camera::device::V3_2::Stream;
+using ::android::hardware::automotive::evs::V1_1::CameraParam;
+
+/*
+ * Plese note that this is different from what is defined in
+ * libhardware/modules/camera/3_4/metadata/types.h; this has one additional
+ * field to store a framerate.
+ */
+const size_t kStreamCfgSz = 6;
+typedef std::array<int32_t, kStreamCfgSz> RawStreamConfiguration;
+
+class ConfigManager {
+public:
+    static std::unique_ptr<ConfigManager> Create(const char *path = "");
+    ConfigManager(const ConfigManager&) = delete;
+    ConfigManager& operator=(const ConfigManager&) = delete;
+
+    virtual ~ConfigManager();
+
+    /* Camera device's capabilities and metadata */
+    class CameraInfo {
+    public:
+        CameraInfo() :
+            characteristics(nullptr) {
+            /* Nothing to do */
+        }
+
+        virtual ~CameraInfo() {
+            free_camera_metadata(characteristics);
+        }
+
+        /* Allocate memory for camera_metadata_t */
+        bool allocate(size_t entry_cap, size_t data_cap) {
+            if (characteristics != nullptr) {
+                ALOGE("Camera metadata is already allocated");
+                return false;
+            }
+
+            characteristics = allocate_camera_metadata(entry_cap, data_cap);
+            return characteristics != nullptr;
+        }
+
+        /*
+         * List of supported controls that the master client can program.
+         * Paraemters are stored with its valid range
+         */
+        unordered_map<CameraParam,
+                      tuple<int32_t, int32_t, int32_t>> controls;
+
+        /* List of supported frame rates */
+        unordered_set<int32_t> frameRates;
+
+        /*
+         * List of supported output stream configurations; each array stores
+         * format, width, height, and direction values in the order.
+         */
+        unordered_map<int32_t, RawStreamConfiguration> streamConfigurations;
+
+        /*
+         * Internal storage for camera metadata.  Each entry holds a pointer to
+         * data and number of elements
+         */
+        unordered_map<camera_metadata_tag_t,
+                      pair<unique_ptr<void *>, size_t>> cameraMetadata;
+
+        /* Camera module characteristics */
+        camera_metadata_t *characteristics;
+    };
+
+    class CameraGroup {
+    public:
+        CameraGroup() {}
+
+        /* ID of member camera devices */
+        unordered_set<string> devices;
+
+        /* The capture operation of member camera devices are synchronized */
+        bool synchronized = false;
+
+        /*
+         * List of stream configurations that are supposed by all camera devices
+         * in this group.
+         */
+        unordered_map<int32_t, RawStreamConfiguration> streamConfigurations;
+    };
+
+    class SystemInfo {
+    public:
+        /* number of available cameras */
+        int32_t numCameras = 0;
+    };
+
+    class DisplayInfo {
+    public:
+        /*
+         * List of supported input stream configurations; each array stores
+         * format, width, height, and direction values in the order.
+         */
+        unordered_map<int32_t, RawStreamConfiguration> streamConfigurations;
+    };
+
+    /*
+     * Return system information
+     *
+     * @return SystemInfo
+     *         Constant reference of SystemInfo.
+     */
+    const SystemInfo &getSystemInfo() {
+        return mSystemInfo;
+    }
+
+    /*
+     * Return a list of cameras
+     *
+     * This function assumes that it is not being called frequently.
+     *
+     * @return vector<string>
+     *         A vector that contains unique camera device identifiers.
+     */
+    vector<string> getCameraList() {
+        vector<string> aList;
+        for (auto &v : mCameraInfo) {
+            aList.emplace_back(v.first);
+        }
+
+        return aList;
+    }
+
+
+    /*
+     * Return a list of cameras
+     *
+     * @return CameraGroup
+     *         A pointer to a camera group identified by a given id.
+     */
+    unique_ptr<CameraGroup>& getCameraGroup(const string& gid) {
+        return mCameraGroups[gid];
+    }
+
+
+    /*
+     * Return a camera metadata
+     *
+     * @param  cameraId
+     *         Unique camera node identifier in string
+     *
+     * @return unique_ptr<CameraInfo>
+     *         A pointer to CameraInfo that is associated with a given camera
+     *         ID.  This returns a null pointer if this does not recognize a
+     *         given camera identifier.
+     */
+    unique_ptr<CameraInfo>& getCameraInfo(const string cameraId) noexcept {
+        return mCameraInfo[cameraId];
+    }
+
+private:
+    /* Constructors */
+    ConfigManager(const char *xmlPath) :
+        mConfigFilePath(xmlPath) {
+    }
+
+    /* System configuration */
+    SystemInfo mSystemInfo;
+
+    /* Internal data structure for camera device information */
+    unordered_map<string, unique_ptr<CameraInfo>> mCameraInfo;
+
+    /* Internal data structure for camera device information */
+    unordered_map<string, unique_ptr<DisplayInfo>> mDisplayInfo;
+
+    /* Camera groups are stored in <groud id, CameraGroup> hash map */
+    unordered_map<string, unique_ptr<CameraGroup>> mCameraGroups;
+
+    /*
+     * Camera positions are stored in <position, camera id set> hash map.
+     * The position must be one of front, rear, left, and right.
+     */
+    unordered_map<string, unordered_set<string>>  mCameraPosition;
+
+    /* A path to XML configuration file */
+    const char *mConfigFilePath;
+
+    /*
+     * Parse a given EVS configuration file and store the information
+     * internally.
+     *
+     * @return bool
+     *         True if it completes parsing a file successfully.
+     */
+    bool readConfigDataFromXML() noexcept;
+
+    /*
+     * read the information of the vehicle
+     *
+     * @param  aSysElem
+     *         A pointer to "system" XML element.
+     */
+    void readSystemInfo(const XMLElement * const aSysElem);
+
+    /*
+     * read the information of camera devices
+     *
+     * @param  aCameraElem
+     *         A pointer to "camera" XML element that may contain multiple
+     *         "device" elements.
+     */
+    void readCameraInfo(const XMLElement * const aCameraElem);
+
+    /*
+     * read display device information
+     *
+     * @param  aDisplayElem
+     *         A pointer to "display" XML element that may contain multiple
+     *         "device" elements.
+     */
+    void readDisplayInfo(const XMLElement * const aDisplayElem);
+
+    /*
+     * read camera device information
+     *
+     * @param  aDeviceElem
+     *         A pointer to "device" XML element that contains camera module
+     *         capability info and its characteristics.
+     *
+     * @return unique_ptr<CameraInfo>
+     *         A pointer to CameraInfo class that contains camera module
+     *         capability and characteristics.  Please note that this transfers
+     *         the ownership of created CameraInfo to the caller.
+     */
+    unique_ptr<CameraInfo> readCameraDeviceInfo(const XMLElement *aDeviceElem);
+
+    /*
+     * read camera metadata
+     *
+     * @param  aCapElem
+     *         A pointer to "cap" XML element.
+     * @param  aCamera
+     *         A pointer to CameraInfo that is being filled by this method.
+     * @param  dataSize
+     *         Required size of memory to store camera metadata found in this
+     *         method.  This is calculated in this method and returned to the
+     *         caller for camera_metadata allocation.
+     *
+     * @return size_t
+     *         Number of camera metadata entries
+     */
+    size_t readCameraCapabilities(const XMLElement * const aCapElem,
+                                  unique_ptr<CameraInfo> &aCamera,
+                                  size_t &dataSize);
+
+    /*
+     * read camera metadata
+     *
+     * @param  aParamElem
+     *         A pointer to "characteristics" XML element.
+     * @param  aCamera
+     *         A pointer to CameraInfo that is being filled by this method.
+     * @param  dataSize
+     *         Required size of memory to store camera metadata found in this
+     *         method.
+     *
+     * @return size_t
+     *         Number of camera metadata entries
+     */
+    size_t readCameraMetadata(const XMLElement * const aParamElem,
+                              unique_ptr<CameraInfo> &aCamera,
+                              size_t &dataSize);
+
+    /*
+     * construct camera_metadata_t from camera capabilities and metadata
+     *
+     * @param  aCamera
+     *         A pointer to CameraInfo that is being filled by this method.
+     * @param  totalEntries
+     *         Number of camera metadata entries to be added.
+     * @param  totalDataSize
+     *         Sum of sizes of camera metadata entries to be added.
+     *
+     * @return bool
+     *         False if either it fails to allocate memory for camera metadata
+     *         or its size is not large enough to add all found camera metadata
+     *         entries.
+     */
+    bool constructCameraMetadata(unique_ptr<CameraInfo> &aCamera,
+                                 const size_t totalEntries,
+                                 const size_t totalDataSize);
+
+    /*
+     * parse a comma-separated list of camera devices and add them to
+     * CameraGroup.
+     *
+     * @param  devices
+     *         A comma-separated list of camera device identifiers.
+     * @param  aGroup
+     *         Camera group which cameras will be added to.
+     */
+    void addCameraDevices(const char *devices,
+                          unique_ptr<CameraGroup> &aGroup);
+};
+#endif // CONFIG_MANAGER_H
+
diff --git a/automotive/evs/1.1/default/ConfigManagerUtil.cpp b/automotive/evs/1.1/default/ConfigManagerUtil.cpp
new file mode 100644
index 0000000..8206daa
--- /dev/null
+++ b/automotive/evs/1.1/default/ConfigManagerUtil.cpp
@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "ConfigManagerUtil.h"
+
+#include <string>
+#include <sstream>
+#include <linux/videodev2.h>
+
+#include <log/log.h>
+#include <system/graphics-base-v1.0.h>
+
+
+bool ConfigManagerUtil::convertToEvsCameraParam(const string &id,
+                                                CameraParam &camParam) {
+    string trimmed = ConfigManagerUtil::trimString(id);
+    bool success = true;
+
+    if (!trimmed.compare("BRIGHTNESS")) {
+        camParam =  CameraParam::BRIGHTNESS;
+    } else if (!trimmed.compare("CONTRAST")) {
+        camParam =  CameraParam::CONTRAST;
+    } else if (!trimmed.compare("AUTOGAIN")) {
+        camParam =  CameraParam::AUTOGAIN;
+    } else if (!trimmed.compare("GAIN")) {
+        camParam =  CameraParam::GAIN;
+    } else if (!trimmed.compare("AUTO_WHITE_BALANCE")) {
+        camParam =  CameraParam::AUTO_WHITE_BALANCE;
+    } else if (!trimmed.compare("WHITE_BALANCE_TEMPERATURE")) {
+        camParam =  CameraParam::WHITE_BALANCE_TEMPERATURE;
+    } else if (!trimmed.compare("SHARPNESS")) {
+        camParam =  CameraParam::SHARPNESS;
+    } else if (!trimmed.compare("AUTO_EXPOSURE")) {
+        camParam =  CameraParam::AUTO_EXPOSURE;
+    } else if (!trimmed.compare("ABSOLUTE_EXPOSURE")) {
+        camParam =  CameraParam::ABSOLUTE_EXPOSURE;
+    } else if (!trimmed.compare("ABSOLUTE_FOCUS")) {
+        camParam =  CameraParam::ABSOLUTE_FOCUS;
+    } else if (!trimmed.compare("AUTO_FOCUS")) {
+        camParam =  CameraParam::AUTO_FOCUS;
+    } else if (!trimmed.compare("ABSOLUTE_ZOOM")) {
+        camParam =  CameraParam::ABSOLUTE_ZOOM;
+    } else {
+        success = false;
+    }
+
+    return success;
+}
+
+
+bool ConfigManagerUtil::convertToPixelFormat(const string &format,
+                                             int32_t &pixFormat) {
+    string trimmed = ConfigManagerUtil::trimString(format);
+    bool success = true;
+
+    if (!trimmed.compare("RGBA_8888")) {
+        pixFormat =  HAL_PIXEL_FORMAT_RGBA_8888;
+    } else if (!trimmed.compare("YCRCB_420_SP")) {
+        pixFormat =  HAL_PIXEL_FORMAT_YCRCB_420_SP;
+    } else if (!trimmed.compare("YCBCR_422_I")) {
+        pixFormat =  HAL_PIXEL_FORMAT_YCBCR_422_I;
+    } else {
+        success = false;
+    }
+
+    return success;
+}
+
+
+bool ConfigManagerUtil::convertToMetadataTag(const char *name,
+                                             camera_metadata_tag &aTag) {
+    if (!strcmp(name, "LENS_DISTORTION")) {
+        aTag =  ANDROID_LENS_DISTORTION;
+    } else if (!strcmp(name, "LENS_INTRINSIC_CALIBRATION")) {
+        aTag =  ANDROID_LENS_INTRINSIC_CALIBRATION;
+    } else if (!strcmp(name, "LENS_POSE_ROTATION")) {
+        aTag =  ANDROID_LENS_POSE_ROTATION;
+    } else if (!strcmp(name, "LENS_POSE_TRANSLATION")) {
+        aTag =  ANDROID_LENS_POSE_TRANSLATION;
+    } else {
+        return false;
+    }
+
+    return true;
+}
+
+
+float *ConfigManagerUtil::convertFloatArray(const char *sz, const char *vals,
+                                            size_t &count, const char delimiter) {
+    string size_string(sz);
+    string value_string(vals);
+
+    count = stoi(size_string);
+    float *result = new float[count];
+    stringstream values(value_string);
+
+    int32_t idx = 0;
+    string token;
+    while (getline(values, token, delimiter)) {
+        result[idx++] = stof(token);
+    }
+
+    return result;
+}
+
+
+string ConfigManagerUtil::trimString(const string &src, const string &ws) {
+    const auto s = src.find_first_not_of(ws);
+    if (s == string::npos) {
+        return "";
+    }
+
+    const auto e = src.find_last_not_of(ws);
+    const auto r = e - s + 1;
+
+    return src.substr(s, r);
+}
+
diff --git a/automotive/evs/1.1/default/ConfigManagerUtil.h b/automotive/evs/1.1/default/ConfigManagerUtil.h
new file mode 100644
index 0000000..8c89ae7
--- /dev/null
+++ b/automotive/evs/1.1/default/ConfigManagerUtil.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CONFIG_MANAGER_UTIL_H
+#define CONFIG_MANAGER_UTIL_H
+
+#include <utility>
+#include <string>
+#include <system/camera_metadata.h>
+#include <android/hardware/automotive/evs/1.1/types.h>
+
+using namespace std;
+using ::android::hardware::automotive::evs::V1_1::CameraParam;
+
+
+class ConfigManagerUtil {
+public:
+    /**
+     * Convert a given string into V4L2_CID_*
+     */
+    static bool convertToEvsCameraParam(const string &id,
+                                        CameraParam &camParam);
+    /**
+     * Convert a given string into android.hardware.graphics.common.PixelFormat
+     */
+    static bool convertToPixelFormat(const string &format,
+                                     int32_t &pixelFormat);
+    /**
+     * Convert a given string into corresponding camera metadata data tag defined in
+     * system/media/camera/include/system/camera_metadta_tags.h
+     */
+    static bool convertToMetadataTag(const char *name,
+                                     camera_metadata_tag &aTag);
+    /**
+     * Convert a given string into a floating value array
+     */
+    static float *convertFloatArray(const char *sz,
+                                    const char *vals,
+                                    size_t &count,
+                                    const char delimiter = ',');
+    /**
+     * Trim a string
+     */
+    static string trimString(const string &src,
+                             const string &ws = " \n\r\t\f\v");
+};
+
+#endif // CONFIG_MANAGER_UTIL_H
+
diff --git a/automotive/evs/1.1/default/EvsCamera.cpp b/automotive/evs/1.1/default/EvsCamera.cpp
new file mode 100644
index 0000000..5ba753d
--- /dev/null
+++ b/automotive/evs/1.1/default/EvsCamera.cpp
@@ -0,0 +1,676 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.automotive.evs@1.1-service"
+
+#include "EvsCamera.h"
+#include "EvsEnumerator.h"
+
+#include <ui/GraphicBufferAllocator.h>
+#include <ui/GraphicBufferMapper.h>
+
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace evs {
+namespace V1_1 {
+namespace implementation {
+
+
+// Special camera names for which we'll initialize alternate test data
+const char EvsCamera::kCameraName_Backup[] = "backup";
+
+
+// Arbitrary limit on number of graphics buffers allowed to be allocated
+// Safeguards against unreasonable resource consumption and provides a testable limit
+const unsigned MAX_BUFFERS_IN_FLIGHT = 100;
+
+
+EvsCamera::EvsCamera(const char *id,
+                     unique_ptr<ConfigManager::CameraInfo> &camInfo) :
+        mFramesAllowed(0),
+        mFramesInUse(0),
+        mStreamState(STOPPED),
+        mCameraInfo(camInfo) {
+
+    ALOGD("EvsCamera instantiated");
+
+    /* set a camera id */
+    mDescription.v1.cameraId = id;
+
+    /* set camera metadata */
+    mDescription.metadata.setToExternal((uint8_t *)camInfo->characteristics,
+                                        get_camera_metadata_size(camInfo->characteristics));
+}
+
+
+EvsCamera::~EvsCamera() {
+    ALOGD("EvsCamera being destroyed");
+    forceShutdown();
+}
+
+
+//
+// This gets called if another caller "steals" ownership of the camera
+//
+void EvsCamera::forceShutdown()
+{
+    ALOGD("EvsCamera forceShutdown");
+
+    // Make sure our output stream is cleaned up
+    // (It really should be already)
+    stopVideoStream();
+
+    // Claim the lock while we work on internal state
+    std::lock_guard <std::mutex> lock(mAccessLock);
+
+    // Drop all the graphics buffers we've been using
+    if (mBuffers.size() > 0) {
+        GraphicBufferAllocator& alloc(GraphicBufferAllocator::get());
+        for (auto&& rec : mBuffers) {
+            if (rec.inUse) {
+                ALOGE("Error - releasing buffer despite remote ownership");
+            }
+            alloc.free(rec.handle);
+            rec.handle = nullptr;
+        }
+        mBuffers.clear();
+    }
+
+    // Put this object into an unrecoverable error state since somebody else
+    // is going to own the underlying camera now
+    mStreamState = DEAD;
+}
+
+
+// Methods from ::android::hardware::automotive::evs::V1_0::IEvsCamera follow.
+Return<void> EvsCamera::getCameraInfo(getCameraInfo_cb _hidl_cb) {
+    ALOGD("getCameraInfo");
+
+    // Send back our self description
+    _hidl_cb(mDescription.v1);
+    return Void();
+}
+
+
+Return<EvsResult> EvsCamera::setMaxFramesInFlight(uint32_t bufferCount) {
+    ALOGD("setMaxFramesInFlight");
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    // If we've been displaced by another owner of the camera, then we can't do anything else
+    if (mStreamState == DEAD) {
+        ALOGE("ignoring setMaxFramesInFlight call when camera has been lost.");
+        return EvsResult::OWNERSHIP_LOST;
+    }
+
+    // We cannot function without at least one video buffer to send data
+    if (bufferCount < 1) {
+        ALOGE("Ignoring setMaxFramesInFlight with less than one buffer requested");
+        return EvsResult::INVALID_ARG;
+    }
+
+    // Update our internal state
+    if (setAvailableFrames_Locked(bufferCount)) {
+        return EvsResult::OK;
+    } else {
+        return EvsResult::BUFFER_NOT_AVAILABLE;
+    }
+}
+
+
+Return<EvsResult> EvsCamera::startVideoStream(const ::android::sp<IEvsCameraStream_1_0>& stream)  {
+    ALOGD("startVideoStream");
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    // If we've been displaced by another owner of the camera, then we can't do anything else
+    if (mStreamState == DEAD) {
+        ALOGE("ignoring startVideoStream call when camera has been lost.");
+        return EvsResult::OWNERSHIP_LOST;
+    }
+    if (mStreamState != STOPPED) {
+        ALOGE("ignoring startVideoStream call when a stream is already running.");
+        return EvsResult::STREAM_ALREADY_RUNNING;
+    }
+
+    // If the client never indicated otherwise, configure ourselves for a single streaming buffer
+    if (mFramesAllowed < 1) {
+        if (!setAvailableFrames_Locked(1)) {
+            ALOGE("Failed to start stream because we couldn't get a graphics buffer");
+            return EvsResult::BUFFER_NOT_AVAILABLE;
+        }
+    }
+
+    // Record the user's callback for use when we have a frame ready
+    mStream = IEvsCameraStream_1_1::castFrom(stream).withDefault(nullptr);
+    if (mStream == nullptr) {
+        ALOGE("Default implementation does not support v1.0 IEvsCameraStream");
+        return EvsResult::INVALID_ARG;
+    }
+
+    // Start the frame generation thread
+    mStreamState = RUNNING;
+    mCaptureThread = std::thread([this](){ generateFrames(); });
+
+    return EvsResult::OK;
+}
+
+
+Return<void> EvsCamera::doneWithFrame(const BufferDesc_1_0& buffer) {
+    std::lock_guard <std::mutex> lock(mAccessLock);
+    returnBuffer(buffer.bufferId, buffer.memHandle);
+
+    return Void();
+}
+
+
+Return<void> EvsCamera::stopVideoStream()  {
+    ALOGD("stopVideoStream");
+    std::unique_lock <std::mutex> lock(mAccessLock);
+
+    if (mStreamState == RUNNING) {
+        // Tell the GenerateFrames loop we want it to stop
+        mStreamState = STOPPING;
+
+        // Block outside the mutex until the "stop" flag has been acknowledged
+        // We won't send any more frames, but the client might still get some already in flight
+        ALOGD("Waiting for stream thread to end...");
+        lock.unlock();
+        mCaptureThread.join();
+        lock.lock();
+
+        mStreamState = STOPPED;
+        mStream = nullptr;
+        ALOGD("Stream marked STOPPED.");
+    }
+
+    return Void();
+}
+
+
+Return<int32_t> EvsCamera::getExtendedInfo(uint32_t opaqueIdentifier)  {
+    ALOGD("getExtendedInfo");
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    // For any single digit value, return the index itself as a test value
+    if (opaqueIdentifier <= 9) {
+        return opaqueIdentifier;
+    }
+
+    // Return zero by default as required by the spec
+    return 0;
+}
+
+
+Return<EvsResult> EvsCamera::setExtendedInfo(uint32_t /*opaqueIdentifier*/, int32_t /*opaqueValue*/)  {
+    ALOGD("setExtendedInfo");
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    // If we've been displaced by another owner of the camera, then we can't do anything else
+    if (mStreamState == DEAD) {
+        ALOGE("ignoring setExtendedInfo call when camera has been lost.");
+        return EvsResult::OWNERSHIP_LOST;
+    }
+
+    // We don't store any device specific information in this implementation
+    return EvsResult::INVALID_ARG;
+}
+
+
+// Methods from ::android::hardware::automotive::evs::V1_1::IEvsCamera follow.
+Return<void> EvsCamera::getCameraInfo_1_1(getCameraInfo_1_1_cb _hidl_cb) {
+    ALOGD("getCameraInfo_1_1");
+
+    // Send back our self description
+    _hidl_cb(mDescription);
+    return Void();
+}
+
+
+Return<EvsResult> EvsCamera::doneWithFrame_1_1(const BufferDesc_1_1& bufDesc)  {
+    std::lock_guard <std::mutex> lock(mAccessLock);
+    returnBuffer(bufDesc.bufferId, bufDesc.buffer.nativeHandle);
+
+    return EvsResult::OK;
+}
+
+
+Return<EvsResult> EvsCamera::pauseVideoStream() {
+    // Default implementation does not support this.
+    return EvsResult::UNDERLYING_SERVICE_ERROR;
+}
+
+
+Return<EvsResult> EvsCamera::resumeVideoStream() {
+    // Default implementation does not support this.
+    return EvsResult::UNDERLYING_SERVICE_ERROR;
+}
+
+
+Return<EvsResult> EvsCamera::setMaster() {
+    // Default implementation does not expect multiple subscribers and therefore
+    // return a success code always.
+    return EvsResult::OK;
+}
+
+Return<EvsResult> EvsCamera::forceMaster(const sp<IEvsDisplay>& ) {
+    // Default implementation does not expect multiple subscribers and therefore
+    // return a success code always.
+    return EvsResult::OK;
+}
+
+
+Return<EvsResult> EvsCamera::unsetMaster() {
+    // Default implementation does not expect multiple subscribers and therefore
+    // return a success code always.
+    return EvsResult::OK;
+}
+
+
+Return<void> EvsCamera::getParameterList(getParameterList_cb _hidl_cb) {
+    hidl_vec<CameraParam> hidlCtrls;
+    hidlCtrls.resize(mCameraInfo->controls.size());
+    unsigned idx = 0;
+    for (auto& [cid, cfg] : mCameraInfo->controls) {
+        hidlCtrls[idx++] = cid;
+    }
+
+    _hidl_cb(hidlCtrls);
+    return Void();
+}
+
+
+Return<void> EvsCamera::getIntParameterRange(CameraParam id,
+                                             getIntParameterRange_cb _hidl_cb) {
+    auto range = mCameraInfo->controls[id];
+    _hidl_cb(get<0>(range), get<1>(range), get<2>(range));
+    return Void();
+}
+
+
+Return<void> EvsCamera::setIntParameter(CameraParam id, int32_t value,
+                                        setIntParameter_cb _hidl_cb) {
+    // Default implementation does not support this.
+    (void)id;
+    (void)value;
+    _hidl_cb(EvsResult::INVALID_ARG, 0);
+    return Void();
+}
+
+
+Return<void> EvsCamera::getIntParameter(CameraParam id,
+                                        getIntParameter_cb _hidl_cb) {
+    // Default implementation does not support this.
+    (void)id;
+    _hidl_cb(EvsResult::INVALID_ARG, 0);
+    return Void();
+}
+
+
+bool EvsCamera::setAvailableFrames_Locked(unsigned bufferCount) {
+    if (bufferCount < 1) {
+        ALOGE("Ignoring request to set buffer count to zero");
+        return false;
+    }
+    if (bufferCount > MAX_BUFFERS_IN_FLIGHT) {
+        ALOGE("Rejecting buffer request in excess of internal limit");
+        return false;
+    }
+
+    // Is an increase required?
+    if (mFramesAllowed < bufferCount) {
+        // An increase is required
+        unsigned needed = bufferCount - mFramesAllowed;
+        ALOGI("Allocating %d buffers for camera frames", needed);
+
+        unsigned added = increaseAvailableFrames_Locked(needed);
+        if (added != needed) {
+            // If we didn't add all the frames we needed, then roll back to the previous state
+            ALOGE("Rolling back to previous frame queue size");
+            decreaseAvailableFrames_Locked(added);
+            return false;
+        }
+    } else if (mFramesAllowed > bufferCount) {
+        // A decrease is required
+        unsigned framesToRelease = mFramesAllowed - bufferCount;
+        ALOGI("Returning %d camera frame buffers", framesToRelease);
+
+        unsigned released = decreaseAvailableFrames_Locked(framesToRelease);
+        if (released != framesToRelease) {
+            // This shouldn't happen with a properly behaving client because the client
+            // should only make this call after returning sufficient outstanding buffers
+            // to allow a clean resize.
+            ALOGE("Buffer queue shrink failed -- too many buffers currently in use?");
+        }
+    }
+
+    return true;
+}
+
+
+unsigned EvsCamera::increaseAvailableFrames_Locked(unsigned numToAdd) {
+    // Acquire the graphics buffer allocator
+    GraphicBufferAllocator &alloc(GraphicBufferAllocator::get());
+
+    unsigned added = 0;
+
+    while (added < numToAdd) {
+        buffer_handle_t memHandle = nullptr;
+        status_t result = alloc.allocate(mWidth, mHeight, mFormat, 1, mUsage,
+                                         &memHandle, &mStride, 0, "EvsCamera");
+        if (result != NO_ERROR) {
+            ALOGE("Error %d allocating %d x %d graphics buffer", result, mWidth, mHeight);
+            break;
+        }
+        if (!memHandle) {
+            ALOGE("We didn't get a buffer handle back from the allocator");
+            break;
+        }
+
+        // Find a place to store the new buffer
+        bool stored = false;
+        for (auto&& rec : mBuffers) {
+            if (rec.handle == nullptr) {
+                // Use this existing entry
+                rec.handle = memHandle;
+                rec.inUse = false;
+                stored = true;
+                break;
+            }
+        }
+        if (!stored) {
+            // Add a BufferRecord wrapping this handle to our set of available buffers
+            mBuffers.emplace_back(memHandle);
+        }
+
+        mFramesAllowed++;
+        added++;
+    }
+
+    return added;
+}
+
+
+unsigned EvsCamera::decreaseAvailableFrames_Locked(unsigned numToRemove) {
+    // Acquire the graphics buffer allocator
+    GraphicBufferAllocator &alloc(GraphicBufferAllocator::get());
+
+    unsigned removed = 0;
+
+    for (auto&& rec : mBuffers) {
+        // Is this record not in use, but holding a buffer that we can free?
+        if ((rec.inUse == false) && (rec.handle != nullptr)) {
+            // Release buffer and update the record so we can recognize it as "empty"
+            alloc.free(rec.handle);
+            rec.handle = nullptr;
+
+            mFramesAllowed--;
+            removed++;
+
+            if (removed == numToRemove) {
+                break;
+            }
+        }
+    }
+
+    return removed;
+}
+
+
+// This is the asynchronous frame generation thread that runs in parallel with the
+// main serving thread.  There is one for each active camera instance.
+void EvsCamera::generateFrames() {
+    ALOGD("Frame generation loop started");
+
+    unsigned idx;
+
+    while (true) {
+        bool timeForFrame = false;
+        nsecs_t startTime = systemTime(SYSTEM_TIME_MONOTONIC);
+
+        // Lock scope for updating shared state
+        {
+            std::lock_guard<std::mutex> lock(mAccessLock);
+
+            if (mStreamState != RUNNING) {
+                // Break out of our main thread loop
+                break;
+            }
+
+            // Are we allowed to issue another buffer?
+            if (mFramesInUse >= mFramesAllowed) {
+                // Can't do anything right now -- skip this frame
+                ALOGW("Skipped a frame because too many are in flight\n");
+            } else {
+                // Identify an available buffer to fill
+                for (idx = 0; idx < mBuffers.size(); idx++) {
+                    if (!mBuffers[idx].inUse) {
+                        if (mBuffers[idx].handle != nullptr) {
+                            // Found an available record, so stop looking
+                            break;
+                        }
+                    }
+                }
+                if (idx >= mBuffers.size()) {
+                    // This shouldn't happen since we already checked mFramesInUse vs mFramesAllowed
+                    ALOGE("Failed to find an available buffer slot\n");
+                } else {
+                    // We're going to make the frame busy
+                    mBuffers[idx].inUse = true;
+                    mFramesInUse++;
+                    timeForFrame = true;
+                }
+            }
+        }
+
+        if (timeForFrame) {
+            // Assemble the buffer description we'll transmit below
+            BufferDesc_1_1 newBuffer = {};
+            AHardwareBuffer_Desc* pDesc =
+                reinterpret_cast<AHardwareBuffer_Desc *>(&newBuffer.buffer.description);
+            pDesc->width = mWidth;
+            pDesc->height = mHeight;
+            pDesc->layers = 1;
+            pDesc->format = mFormat;
+            pDesc->usage = mUsage;
+            pDesc->stride = mStride;
+            newBuffer.buffer.nativeHandle = mBuffers[idx].handle;
+            newBuffer.pixelSize = sizeof(uint32_t);
+            newBuffer.bufferId = idx;
+
+            // Write test data into the image buffer
+            fillTestFrame(newBuffer);
+
+            // Issue the (asynchronous) callback to the client -- can't be holding the lock
+            auto result = mStream->deliverFrame_1_1(newBuffer);
+            if (result.isOk()) {
+                ALOGD("Delivered %p as id %d",
+                      newBuffer.buffer.nativeHandle.getNativeHandle(), newBuffer.bufferId);
+            } else {
+                // This can happen if the client dies and is likely unrecoverable.
+                // To avoid consuming resources generating failing calls, we stop sending
+                // frames.  Note, however, that the stream remains in the "STREAMING" state
+                // until cleaned up on the main thread.
+                ALOGE("Frame delivery call failed in the transport layer.");
+
+                // Since we didn't actually deliver it, mark the frame as available
+                std::lock_guard<std::mutex> lock(mAccessLock);
+                mBuffers[idx].inUse = false;
+                mFramesInUse--;
+
+                break;
+            }
+        }
+
+        // We arbitrarily choose to generate frames at 12 fps to ensure we pass the 10fps test requirement
+        static const int kTargetFrameRate = 12;
+        static const nsecs_t kTargetFrameTimeUs = 1000*1000 / kTargetFrameRate;
+        const nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC);
+        const nsecs_t workTimeUs = (now - startTime) / 1000;
+        const nsecs_t sleepDurationUs = kTargetFrameTimeUs - workTimeUs;
+        if (sleepDurationUs > 0) {
+            usleep(sleepDurationUs);
+        }
+    }
+
+    // If we've been asked to stop, send an event to signal the actual end of stream
+    EvsEvent event;
+    event.aType = EvsEventType::STREAM_STOPPED;
+    auto result = mStream->notify(event);
+    if (!result.isOk()) {
+        ALOGE("Error delivering end of stream marker");
+    }
+
+    return;
+}
+
+
+void EvsCamera::fillTestFrame(const BufferDesc_1_1& buff) {
+    // Lock our output buffer for writing
+    uint32_t *pixels = nullptr;
+    const AHardwareBuffer_Desc* pDesc =
+        reinterpret_cast<const AHardwareBuffer_Desc *>(&buff.buffer.description);
+    GraphicBufferMapper &mapper = GraphicBufferMapper::get();
+    mapper.lock(buff.buffer.nativeHandle,
+                GRALLOC_USAGE_SW_WRITE_OFTEN | GRALLOC_USAGE_SW_READ_NEVER,
+                android::Rect(pDesc->width, pDesc->height),
+                (void **) &pixels);
+
+    // If we failed to lock the pixel buffer, we're about to crash, but log it first
+    if (!pixels) {
+        ALOGE("Camera failed to gain access to image buffer for writing");
+    }
+
+    // Fill in the test pixels
+    for (unsigned row = 0; row < pDesc->height; row++) {
+        for (unsigned col = 0; col < pDesc->width; col++) {
+            // Index into the row to check the pixel at this column.
+            // We expect 0xFF in the LSB channel, a vertical gradient in the
+            // second channel, a horitzontal gradient in the third channel, and
+            // 0xFF in the MSB.
+            // The exception is the very first 32 bits which is used for the
+            // time varying frame signature to avoid getting fooled by a static image.
+            uint32_t expectedPixel = 0xFF0000FF           | // MSB and LSB
+                                     ((row & 0xFF) <<  8) | // vertical gradient
+                                     ((col & 0xFF) << 16);  // horizontal gradient
+            if ((row | col) == 0) {
+                static uint32_t sFrameTicker = 0;
+                expectedPixel = (sFrameTicker) & 0xFF;
+                sFrameTicker++;
+            }
+            pixels[col] = expectedPixel;
+        }
+        // Point to the next row
+        // NOTE:  stride retrieved from gralloc is in units of pixels
+        pixels = pixels + pDesc->stride;
+    }
+
+    // Release our output buffer
+    mapper.unlock(buff.buffer.nativeHandle);
+}
+
+
+void EvsCamera::fillTestFrame(const BufferDesc_1_0& buff) {
+    BufferDesc_1_1 newBufDesc = {};
+    AHardwareBuffer_Desc desc = {
+        buff.width,   // width
+        buff.height,  // height
+        1,            // layers, always 1 for EVS
+        buff.format,  // One of AHardwareBuffer_Format
+        buff.usage,   // Combination of AHardwareBuffer_UsageFlags
+        buff.stride,  // Row stride in pixels
+        0,            // Reserved
+        0             // Reserved
+    };
+    memcpy(&desc, &newBufDesc.buffer.description, sizeof(desc));
+    newBufDesc.buffer.nativeHandle = buff.memHandle;
+    newBufDesc.pixelSize = buff.pixelSize;
+    newBufDesc.bufferId = buff.bufferId;
+
+    return fillTestFrame(newBufDesc);
+}
+
+
+void EvsCamera::returnBuffer(const uint32_t bufferId, const buffer_handle_t memHandle) {
+    std::lock_guard <std::mutex> lock(mAccessLock);
+
+    if (memHandle == nullptr) {
+        ALOGE("ignoring doneWithFrame called with null handle");
+    } else if (bufferId >= mBuffers.size()) {
+        ALOGE("ignoring doneWithFrame called with invalid bufferId %d (max is %zu)",
+              bufferId, mBuffers.size()-1);
+    } else if (!mBuffers[bufferId].inUse) {
+        ALOGE("ignoring doneWithFrame called on frame %d which is already free",
+              bufferId);
+    } else {
+        // Mark the frame as available
+        mBuffers[bufferId].inUse = false;
+        mFramesInUse--;
+
+        // If this frame's index is high in the array, try to move it down
+        // to improve locality after mFramesAllowed has been reduced.
+        if (bufferId >= mFramesAllowed) {
+            // Find an empty slot lower in the array (which should always exist in this case)
+            for (auto&& rec : mBuffers) {
+                if (rec.handle == nullptr) {
+                    rec.handle = mBuffers[bufferId].handle;
+                    mBuffers[bufferId].handle = nullptr;
+                    break;
+                }
+            }
+        }
+    }
+}
+
+
+sp<EvsCamera> EvsCamera::Create(const char *deviceName) {
+    unique_ptr<ConfigManager::CameraInfo> nullCamInfo = nullptr;
+
+    return Create(deviceName, nullCamInfo);
+}
+
+
+sp<EvsCamera> EvsCamera::Create(const char *deviceName,
+                                unique_ptr<ConfigManager::CameraInfo> &camInfo,
+                                const Stream *streamCfg) {
+    sp<EvsCamera> evsCamera = new EvsCamera(deviceName, camInfo);
+    if (evsCamera == nullptr) {
+        return nullptr;
+    }
+
+    /* default implementation does not use a given configuration */
+    (void)streamCfg;
+
+    /* Use the first resolution from the list for the testing */
+    auto it = camInfo->streamConfigurations.begin();
+    evsCamera->mWidth = it->second[1];
+    evsCamera->mHeight = it->second[2];
+    evsCamera->mDescription.v1.vendorFlags = 0xFFFFFFFF; // Arbitrary test value
+
+    evsCamera->mFormat = HAL_PIXEL_FORMAT_RGBA_8888;
+    evsCamera->mUsage  = GRALLOC_USAGE_HW_TEXTURE | GRALLOC_USAGE_HW_CAMERA_WRITE |
+                         GRALLOC_USAGE_SW_READ_RARELY | GRALLOC_USAGE_SW_WRITE_RARELY;
+
+    return evsCamera;
+}
+
+
+} // namespace implementation
+} // namespace V1_0
+} // namespace evs
+} // namespace automotive
+} // namespace hardware
+} // namespace android
diff --git a/automotive/evs/1.1/default/EvsCamera.h b/automotive/evs/1.1/default/EvsCamera.h
new file mode 100644
index 0000000..c15b4b1
--- /dev/null
+++ b/automotive/evs/1.1/default/EvsCamera.h
@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSCAMERA_H
+#define ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSCAMERA_H
+
+#include <android/hardware/automotive/evs/1.1/types.h>
+#include <android/hardware/automotive/evs/1.1/IEvsCamera.h>
+#include <android/hardware/automotive/evs/1.1/IEvsCameraStream.h>
+#include <android/hardware/automotive/evs/1.0/IEvsDisplay.h>
+#include <ui/GraphicBuffer.h>
+
+#include <thread>
+
+#include "ConfigManager.h"
+
+using BufferDesc_1_0 = ::android::hardware::automotive::evs::V1_0::BufferDesc;
+using BufferDesc_1_1 = ::android::hardware::automotive::evs::V1_1::BufferDesc;
+using IEvsCameraStream_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsCameraStream;
+using IEvsCameraStream_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsCameraStream;
+using ::android::hardware::automotive::evs::V1_0::EvsResult;
+using ::android::hardware::automotive::evs::V1_0::CameraDesc;
+using ::android::hardware::automotive::evs::V1_0::IEvsDisplay;
+
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace evs {
+namespace V1_1 {
+namespace implementation {
+
+
+// From EvsEnumerator.h
+class EvsEnumerator;
+
+
+class EvsCamera : public IEvsCamera {
+public:
+    // Methods from ::android::hardware::automotive::evs::V1_0::IEvsCamera follow.
+    Return<void>      getCameraInfo(getCameraInfo_cb _hidl_cb)  override;
+    Return<EvsResult> setMaxFramesInFlight(uint32_t bufferCount) override;
+    Return<EvsResult> startVideoStream(const ::android::sp<IEvsCameraStream_1_0>& stream) override;
+    Return<void>      stopVideoStream() override;
+    Return<void>      doneWithFrame(const BufferDesc_1_0& buffer) override;
+
+    Return<int32_t>   getExtendedInfo(uint32_t opaqueIdentifier) override;
+    Return<EvsResult> setExtendedInfo(uint32_t opaqueIdentifier, int32_t opaqueValue) override;
+
+    // Methods from ::android::hardware::automotive::evs::V1_1::IEvsCamera follow.
+    Return<void>      getCameraInfo_1_1(getCameraInfo_1_1_cb _hidl_cb)  override;
+    Return<EvsResult> pauseVideoStream() override;
+    Return<EvsResult> resumeVideoStream() override;
+    Return<EvsResult> doneWithFrame_1_1(const BufferDesc_1_1& buffer) override;
+    Return<EvsResult> setMaster() override;
+    Return<EvsResult> forceMaster(const sp<IEvsDisplay>& display) override;
+    Return<EvsResult> unsetMaster() override;
+    Return<void>      getParameterList(getParameterList_cb _hidl_cb) override;
+    Return<void>      getIntParameterRange(CameraParam id,
+                                           getIntParameterRange_cb _hidl_cb) override;
+    Return<void>      setIntParameter(CameraParam id, int32_t value,
+                                      setIntParameter_cb _hidl_cb) override;
+    Return<void>      getIntParameter(CameraParam id,
+                                      getIntParameter_cb _hidl_cb) override;
+
+    static sp<EvsCamera> Create(const char *deviceName);
+    static sp<EvsCamera> Create(const char *deviceName,
+                                unique_ptr<ConfigManager::CameraInfo> &camInfo,
+                                const Stream *streamCfg = nullptr);
+    EvsCamera(const EvsCamera&) = delete;
+    EvsCamera& operator=(const EvsCamera&) = delete;
+
+    virtual ~EvsCamera() override;
+    void forceShutdown();   // This gets called if another caller "steals" ownership of the camera
+
+    const CameraDesc& getDesc() { return mDescription; };
+
+    static const char kCameraName_Backup[];
+
+private:
+    EvsCamera(const char *id,
+              unique_ptr<ConfigManager::CameraInfo> &camInfo);
+    // These three functions are expected to be called while mAccessLock is held
+    //
+    bool setAvailableFrames_Locked(unsigned bufferCount);
+    unsigned increaseAvailableFrames_Locked(unsigned numToAdd);
+    unsigned decreaseAvailableFrames_Locked(unsigned numToRemove);
+
+    void generateFrames();
+    void fillTestFrame(const BufferDesc_1_0& buff);
+    void fillTestFrame(const BufferDesc_1_1& buff);
+    void returnBuffer(const uint32_t bufferId, const buffer_handle_t memHandle);
+
+    sp<EvsEnumerator> mEnumerator;  // The enumerator object that created this camera
+
+    CameraDesc mDescription = {};   // The properties of this camera
+
+    std::thread mCaptureThread;     // The thread we'll use to synthesize frames
+
+    uint32_t mWidth  = 0;           // Horizontal pixel count in the buffers
+    uint32_t mHeight = 0;           // Vertical pixel count in the buffers
+    uint32_t mFormat = 0;           // Values from android_pixel_format_t
+    uint64_t mUsage  = 0;           // Values from from Gralloc.h
+    uint32_t mStride = 0;           // Bytes per line in the buffers
+
+    sp<IEvsCameraStream_1_1> mStream = nullptr;  // The callback used to deliver each frame
+
+    struct BufferRecord {
+        buffer_handle_t handle;
+        bool inUse;
+
+        explicit BufferRecord(buffer_handle_t h) : handle(h), inUse(false) {};
+    };
+
+    std::vector <BufferRecord> mBuffers;  // Graphics buffers to transfer images
+    unsigned mFramesAllowed;              // How many buffers are we currently using
+    unsigned mFramesInUse;                // How many buffers are currently outstanding
+
+    enum StreamStateValues {
+        STOPPED,
+        RUNNING,
+        STOPPING,
+        DEAD,
+    };
+    StreamStateValues mStreamState;
+
+    // Synchronization necessary to deconflict mCaptureThread from the main service thread
+    std::mutex mAccessLock;
+
+    // Static camera module information
+    unique_ptr<ConfigManager::CameraInfo> &mCameraInfo;
+};
+
+} // namespace implementation
+} // namespace V1_1
+} // namespace evs
+} // namespace automotive
+} // namespace hardware
+} // namespace android
+
+#endif  // ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSCAMERA_H
diff --git a/automotive/evs/1.1/default/EvsDisplay.cpp b/automotive/evs/1.1/default/EvsDisplay.cpp
new file mode 100644
index 0000000..74c099a
--- /dev/null
+++ b/automotive/evs/1.1/default/EvsDisplay.cpp
@@ -0,0 +1,335 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.automotive.evs@1.1-service"
+
+#include "EvsDisplay.h"
+
+#include <ui/GraphicBufferAllocator.h>
+#include <ui/GraphicBufferMapper.h>
+
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace evs {
+namespace V1_1 {
+namespace implementation {
+
+
+EvsDisplay::EvsDisplay() {
+    ALOGD("EvsDisplay instantiated");
+
+    // Set up our self description
+    // NOTE:  These are arbitrary values chosen for testing
+    mInfo.displayId             = "Mock Display";
+    mInfo.vendorFlags           = 3870;
+
+    // Assemble the buffer description we'll use for our render target
+    mBuffer.width       = 320;
+    mBuffer.height      = 240;
+    mBuffer.format      = HAL_PIXEL_FORMAT_RGBA_8888;
+    mBuffer.usage       = GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_COMPOSER;
+    mBuffer.bufferId    = 0x3870;  // Arbitrary magic number for self recognition
+    mBuffer.pixelSize   = 4;
+}
+
+
+EvsDisplay::~EvsDisplay() {
+    ALOGD("EvsDisplay being destroyed");
+    forceShutdown();
+}
+
+
+/**
+ * This gets called if another caller "steals" ownership of the display
+ */
+void EvsDisplay::forceShutdown()
+{
+    ALOGD("EvsDisplay forceShutdown");
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    // If the buffer isn't being held by a remote client, release it now as an
+    // optimization to release the resources more quickly than the destructor might
+    // get called.
+    if (mBuffer.memHandle) {
+        // Report if we're going away while a buffer is outstanding
+        if (mFrameBusy) {
+            ALOGE("EvsDisplay going down while client is holding a buffer");
+        }
+
+        // Drop the graphics buffer we've been using
+        GraphicBufferAllocator& alloc(GraphicBufferAllocator::get());
+        alloc.free(mBuffer.memHandle);
+        mBuffer.memHandle = nullptr;
+    }
+
+    // Put this object into an unrecoverable error state since somebody else
+    // is going to own the display now.
+    mRequestedState = DisplayState::DEAD;
+}
+
+
+/**
+ * Returns basic information about the EVS display provided by the system.
+ * See the description of the DisplayDesc structure for details.
+ */
+Return<void> EvsDisplay::getDisplayInfo(getDisplayInfo_cb _hidl_cb)  {
+    ALOGD("getDisplayInfo");
+
+    // Send back our self description
+    _hidl_cb(mInfo);
+    return Void();
+}
+
+
+/**
+ * Clients may set the display state to express their desired state.
+ * The HAL implementation must gracefully accept a request for any state
+ * while in any other state, although the response may be to ignore the request.
+ * The display is defined to start in the NOT_VISIBLE state upon initialization.
+ * The client is then expected to request the VISIBLE_ON_NEXT_FRAME state, and
+ * then begin providing video.  When the display is no longer required, the client
+ * is expected to request the NOT_VISIBLE state after passing the last video frame.
+ */
+Return<EvsResult> EvsDisplay::setDisplayState(DisplayState state) {
+    ALOGD("setDisplayState");
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    if (mRequestedState == DisplayState::DEAD) {
+        // This object no longer owns the display -- it's been superceeded!
+        return EvsResult::OWNERSHIP_LOST;
+    }
+
+    // Ensure we recognize the requested state so we don't go off the rails
+    if (state < DisplayState::NUM_STATES) {
+        // Record the requested state
+        mRequestedState = state;
+        return EvsResult::OK;
+    }
+    else {
+        // Turn off the display if asked for an unrecognized state
+        mRequestedState = DisplayState::NOT_VISIBLE;
+        return EvsResult::INVALID_ARG;
+    }
+}
+
+
+/**
+ * The HAL implementation should report the actual current state, which might
+ * transiently differ from the most recently requested state.  Note, however, that
+ * the logic responsible for changing display states should generally live above
+ * the device layer, making it undesirable for the HAL implementation to
+ * spontaneously change display states.
+ */
+Return<DisplayState> EvsDisplay::getDisplayState()  {
+    ALOGD("getDisplayState");
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    return mRequestedState;
+}
+
+
+/**
+ * This call returns a handle to a frame buffer associated with the display.
+ * This buffer may be locked and written to by software and/or GL.  This buffer
+ * must be returned via a call to returnTargetBufferForDisplay() even if the
+ * display is no longer visible.
+ */
+// TODO: We need to know if/when our client dies so we can get the buffer back! (blocked b/31632518)
+Return<void> EvsDisplay::getTargetBuffer(getTargetBuffer_cb _hidl_cb)  {
+    ALOGD("getTargetBuffer");
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    if (mRequestedState == DisplayState::DEAD) {
+        ALOGE("Rejecting buffer request from object that lost ownership of the display.");
+        BufferDesc_1_0 nullBuff = {};
+        _hidl_cb(nullBuff);
+        return Void();
+    }
+
+    // If we don't already have a buffer, allocate one now
+    if (!mBuffer.memHandle) {
+        // Allocate the buffer that will hold our displayable image
+        buffer_handle_t handle = nullptr;
+        GraphicBufferAllocator& alloc(GraphicBufferAllocator::get());
+        status_t result = alloc.allocate(
+            mBuffer.width, mBuffer.height, mBuffer.format, 1, mBuffer.usage,
+            &handle, &mBuffer.stride, 0, "EvsDisplay");
+        if (result != NO_ERROR) {
+            ALOGE("Error %d allocating %d x %d graphics buffer",
+                  result, mBuffer.width, mBuffer.height);
+            BufferDesc_1_0 nullBuff = {};
+            _hidl_cb(nullBuff);
+            return Void();
+        }
+        if (!handle) {
+            ALOGE("We didn't get a buffer handle back from the allocator");
+            BufferDesc_1_0 nullBuff = {};
+            _hidl_cb(nullBuff);
+            return Void();
+        }
+
+        mBuffer.memHandle = handle;
+        mFrameBusy = false;
+        ALOGD("Allocated new buffer %p with stride %u",
+              mBuffer.memHandle.getNativeHandle(), mBuffer.stride);
+    }
+
+    // Do we have a frame available?
+    if (mFrameBusy) {
+        // This means either we have a 2nd client trying to compete for buffers
+        // (an unsupported mode of operation) or else the client hasn't returned
+        // a previously issued buffer yet (they're behaving badly).
+        // NOTE:  We have to make the callback even if we have nothing to provide
+        ALOGE("getTargetBuffer called while no buffers available.");
+        BufferDesc_1_0 nullBuff = {};
+        _hidl_cb(nullBuff);
+        return Void();
+    } else {
+        // Mark our buffer as busy
+        mFrameBusy = true;
+
+        // Send the buffer to the client
+        ALOGD("Providing display buffer handle %p as id %d",
+              mBuffer.memHandle.getNativeHandle(), mBuffer.bufferId);
+        _hidl_cb(mBuffer);
+        return Void();
+    }
+}
+
+
+/**
+ * This call tells the display that the buffer is ready for display.
+ * The buffer is no longer valid for use by the client after this call.
+ */
+Return<EvsResult> EvsDisplay::returnTargetBufferForDisplayImpl(const uint32_t bufferId, const buffer_handle_t memHandle) {
+    ALOGD("returnTargetBufferForDisplay %p", memHandle);
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    // Nobody should call us with a null handle
+    if (!memHandle) {
+        ALOGE ("returnTargetBufferForDisplay called without a valid buffer handle.\n");
+        return EvsResult::INVALID_ARG;
+    }
+    if (bufferId != mBuffer.bufferId) {
+        ALOGE ("Got an unrecognized frame returned.\n");
+        return EvsResult::INVALID_ARG;
+    }
+    if (!mFrameBusy) {
+        ALOGE ("A frame was returned with no outstanding frames.\n");
+        return EvsResult::BUFFER_NOT_AVAILABLE;
+    }
+
+    mFrameBusy = false;
+
+    // If we've been displaced by another owner of the display, then we can't do anything else
+    if (mRequestedState == DisplayState::DEAD) {
+        return EvsResult::OWNERSHIP_LOST;
+    }
+
+    // If we were waiting for a new frame, this is it!
+    if (mRequestedState == DisplayState::VISIBLE_ON_NEXT_FRAME) {
+        mRequestedState = DisplayState::VISIBLE;
+    }
+
+    // Validate we're in an expected state
+    if (mRequestedState != DisplayState::VISIBLE) {
+        // We shouldn't get frames back when we're not visible.
+        ALOGE ("Got an unexpected frame returned while not visible - ignoring.\n");
+    } else {
+        // This is where the buffer would be made visible.
+        // For now we simply validate it has the data we expect in it by reading it back
+
+        // Lock our display buffer for reading
+        uint32_t* pixels = nullptr;
+        GraphicBufferMapper &mapper = GraphicBufferMapper::get();
+        mapper.lock(mBuffer.memHandle,
+                    GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_NEVER,
+                    android::Rect(mBuffer.width, mBuffer.height),
+                    (void **)&pixels);
+
+        // If we failed to lock the pixel buffer, we're about to crash, but log it first
+        if (!pixels) {
+            ALOGE("Display failed to gain access to image buffer for reading");
+        }
+
+        // Check the test pixels
+        bool frameLooksGood = true;
+        for (unsigned row = 0; row < mBuffer.height; row++) {
+            for (unsigned col = 0; col < mBuffer.width; col++) {
+                // Index into the row to check the pixel at this column.
+                // We expect 0xFF in the LSB channel, a vertical gradient in the
+                // second channel, a horitzontal gradient in the third channel, and
+                // 0xFF in the MSB.
+                // The exception is the very first 32 bits which is used for the
+                // time varying frame signature to avoid getting fooled by a static image.
+                uint32_t expectedPixel = 0xFF0000FF           | // MSB and LSB
+                                         ((row & 0xFF) <<  8) | // vertical gradient
+                                         ((col & 0xFF) << 16);  // horizontal gradient
+                if ((row | col) == 0) {
+                    // we'll check the "uniqueness" of the frame signature below
+                    continue;
+                }
+                // Walk across this row (we'll step rows below)
+                uint32_t receivedPixel = pixels[col];
+                if (receivedPixel != expectedPixel) {
+                    ALOGE("Pixel check mismatch in frame buffer");
+                    frameLooksGood = false;
+                    break;
+                }
+            }
+
+            if (!frameLooksGood) {
+                break;
+            }
+
+            // Point to the next row (NOTE:  gralloc reports stride in units of pixels)
+            pixels = pixels + mBuffer.stride;
+        }
+
+        // Ensure we don't see the same buffer twice without it being rewritten
+        static uint32_t prevSignature = ~0;
+        uint32_t signature = pixels[0] & 0xFF;
+        if (prevSignature == signature) {
+            frameLooksGood = false;
+            ALOGE("Duplicate, likely stale frame buffer detected");
+        }
+
+
+        // Release our output buffer
+        mapper.unlock(mBuffer.memHandle);
+
+        if (!frameLooksGood) {
+            return EvsResult::UNDERLYING_SERVICE_ERROR;
+        }
+    }
+
+    return EvsResult::OK;
+}
+
+
+Return<EvsResult> EvsDisplay::returnTargetBufferForDisplay(const BufferDesc_1_0& buffer)  {
+    return returnTargetBufferForDisplayImpl(buffer.bufferId, buffer.memHandle);
+}
+
+
+} // namespace implementation
+} // namespace V1_1
+} // namespace evs
+} // namespace automotive
+} // namespace hardware
+} // namespace android
diff --git a/automotive/evs/1.1/default/EvsDisplay.h b/automotive/evs/1.1/default/EvsDisplay.h
new file mode 100644
index 0000000..2a56535
--- /dev/null
+++ b/automotive/evs/1.1/default/EvsDisplay.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSDISPLAY_H
+#define ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSDISPLAY_H
+
+#include <android/hardware/automotive/evs/1.0/IEvsDisplay.h>
+#include <ui/GraphicBuffer.h>
+
+using ::android::hardware::automotive::evs::V1_0::IEvsDisplay;
+using ::android::hardware::automotive::evs::V1_0::DisplayDesc;
+using ::android::hardware::automotive::evs::V1_0::DisplayState;
+using ::android::hardware::automotive::evs::V1_0::EvsResult;
+using BufferDesc_1_0 = ::android::hardware::automotive::evs::V1_0::BufferDesc;
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace evs {
+namespace V1_1 {
+namespace implementation {
+
+
+class EvsDisplay : public IEvsDisplay {
+public:
+    // Methods from ::android::hardware::automotive::evs::V1_0::IEvsDisplay follow.
+    Return<void>         getDisplayInfo(getDisplayInfo_cb _hidl_cb)  override;
+    Return<EvsResult>    setDisplayState(DisplayState state)  override;
+    Return<DisplayState> getDisplayState()  override;
+    Return<void>         getTargetBuffer(getTargetBuffer_cb _hidl_cb)  override;
+    Return<EvsResult>    returnTargetBufferForDisplay(const BufferDesc_1_0& buffer)  override;
+
+
+    // Implementation details
+    EvsDisplay();
+    virtual ~EvsDisplay() override;
+
+    void forceShutdown();   // This gets called if another caller "steals" ownership of the display
+    Return<EvsResult> returnTargetBufferForDisplayImpl(const uint32_t bufferId,
+                                                       const buffer_handle_t memHandle);
+
+private:
+    DisplayDesc     mInfo           = {};
+    BufferDesc_1_0  mBuffer         = {};       // A graphics buffer into which we'll store images
+
+    bool            mFrameBusy      = false;    // A flag telling us our buffer is in use
+    DisplayState    mRequestedState = DisplayState::NOT_VISIBLE;
+
+    std::mutex      mAccessLock;
+};
+
+} // namespace implementation
+} // namespace V1_1
+} // namespace evs
+} // namespace automotive
+} // namespace hardware
+} // namespace android
+
+#endif  // ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSDISPLAY_H
diff --git a/automotive/evs/1.1/default/EvsEnumerator.cpp b/automotive/evs/1.1/default/EvsEnumerator.cpp
new file mode 100644
index 0000000..a010729
--- /dev/null
+++ b/automotive/evs/1.1/default/EvsEnumerator.cpp
@@ -0,0 +1,308 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.automotive.evs@1.1-service"
+
+#include "EvsEnumerator.h"
+#include "EvsCamera.h"
+#include "EvsDisplay.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace evs {
+namespace V1_1 {
+namespace implementation {
+
+
+// NOTE:  All members values are static so that all clients operate on the same state
+//        That is to say, this is effectively a singleton despite the fact that HIDL
+//        constructs a new instance for each client.
+std::list<EvsEnumerator::CameraRecord>   EvsEnumerator::sCameraList;
+wp<EvsDisplay>                           EvsEnumerator::sActiveDisplay;
+unique_ptr<ConfigManager>                EvsEnumerator::sConfigManager;
+
+
+EvsEnumerator::EvsEnumerator() {
+    ALOGD("EvsEnumerator created");
+
+    // Add sample camera data to our list of cameras
+    // In a real driver, this would be expected to can the available hardware
+    sConfigManager =
+        ConfigManager::Create("/etc/automotive/evs/evs_sample_configuration.xml");
+    for (auto v : sConfigManager->getCameraList()) {
+        sCameraList.emplace_back(v.c_str());
+    }
+}
+
+
+// Methods from ::android::hardware::automotive::evs::V1_0::IEvsEnumerator follow.
+Return<void> EvsEnumerator::getCameraList(getCameraList_cb _hidl_cb)  {
+    ALOGD("getCameraList");
+
+    const unsigned numCameras = sCameraList.size();
+
+    // Build up a packed array of CameraDesc for return
+    // NOTE:  Only has to live until the callback returns
+    std::vector<CameraDesc_1_0> descriptions;
+    descriptions.reserve(numCameras);
+    for (const auto& cam : sCameraList) {
+        descriptions.push_back( cam.desc.v1 );
+    }
+
+    // Encapsulate our camera descriptions in the HIDL vec type
+    hidl_vec<CameraDesc_1_0> hidlCameras(descriptions);
+
+    // Send back the results
+    ALOGD("reporting %zu cameras available", hidlCameras.size());
+    _hidl_cb(hidlCameras);
+
+    // HIDL convention says we return Void if we sent our result back via callback
+    return Void();
+}
+
+
+Return<sp<IEvsCamera_1_0>> EvsEnumerator::openCamera(const hidl_string& cameraId) {
+    ALOGD("openCamera");
+
+    // Find the named camera
+    CameraRecord *pRecord = nullptr;
+    for (auto &&cam : sCameraList) {
+        if (cam.desc.v1.cameraId == cameraId) {
+            // Found a match!
+            pRecord = &cam;
+            break;
+        }
+    }
+
+    // Is this a recognized camera id?
+    if (!pRecord) {
+        ALOGE("Requested camera %s not found", cameraId.c_str());
+        return nullptr;
+    }
+
+    // Has this camera already been instantiated by another caller?
+    sp<EvsCamera> pActiveCamera = pRecord->activeInstance.promote();
+    if (pActiveCamera != nullptr) {
+        ALOGW("Killing previous camera because of new caller");
+        closeCamera(pActiveCamera);
+    }
+
+    // Construct a camera instance for the caller
+    if (sConfigManager == nullptr) {
+        pActiveCamera = EvsCamera::Create(cameraId.c_str());
+    } else {
+        pActiveCamera = EvsCamera::Create(cameraId.c_str(),
+                                          sConfigManager->getCameraInfo(cameraId));
+    }
+    pRecord->activeInstance = pActiveCamera;
+    if (pActiveCamera == nullptr) {
+        ALOGE("Failed to allocate new EvsCamera object for %s\n", cameraId.c_str());
+    }
+
+    return pActiveCamera;
+}
+
+
+Return<void> EvsEnumerator::closeCamera(const ::android::sp<IEvsCamera_1_0>& pCamera) {
+    ALOGD("closeCamera");
+
+    auto pCamera_1_1 = IEvsCamera_1_1::castFrom(pCamera).withDefault(nullptr);
+    if (pCamera_1_1 == nullptr) {
+        ALOGE("Ignoring call to closeCamera with null camera ptr");
+        return Void();
+    }
+
+    // Get the camera id so we can find it in our list
+    std::string cameraId;
+    pCamera_1_1->getCameraInfo_1_1([&cameraId](CameraDesc desc) {
+                               cameraId = desc.v1.cameraId;
+                           }
+    );
+
+    // Find the named camera
+    CameraRecord *pRecord = nullptr;
+    for (auto &&cam : sCameraList) {
+        if (cam.desc.v1.cameraId == cameraId) {
+            // Found a match!
+            pRecord = &cam;
+            break;
+        }
+    }
+
+    // Is the display being destroyed actually the one we think is active?
+    if (!pRecord) {
+        ALOGE("Asked to close a camera who's name isn't recognized");
+    } else {
+        sp<EvsCamera> pActiveCamera = pRecord->activeInstance.promote();
+
+        if (pActiveCamera == nullptr) {
+            ALOGE("Somehow a camera is being destroyed when the enumerator didn't know one existed");
+        } else if (pActiveCamera != pCamera_1_1) {
+            // This can happen if the camera was aggressively reopened, orphaning this previous instance
+            ALOGW("Ignoring close of previously orphaned camera - why did a client steal?");
+        } else {
+            // Drop the active camera
+            pActiveCamera->forceShutdown();
+            pRecord->activeInstance = nullptr;
+        }
+    }
+
+    return Void();
+}
+
+
+Return<sp<IEvsDisplay>> EvsEnumerator::openDisplay() {
+    ALOGD("openDisplay");
+
+    // If we already have a display active, then we need to shut it down so we can
+    // give exclusive access to the new caller.
+    sp<EvsDisplay> pActiveDisplay = sActiveDisplay.promote();
+    if (pActiveDisplay != nullptr) {
+        ALOGW("Killing previous display because of new caller");
+        closeDisplay(pActiveDisplay);
+    }
+
+    // Create a new display interface and return it
+    pActiveDisplay = new EvsDisplay();
+    sActiveDisplay = pActiveDisplay;
+
+    ALOGD("Returning new EvsDisplay object %p", pActiveDisplay.get());
+    return pActiveDisplay;
+}
+
+
+Return<void> EvsEnumerator::closeDisplay(const ::android::sp<IEvsDisplay>& pDisplay) {
+    ALOGD("closeDisplay");
+
+    // Do we still have a display object we think should be active?
+    sp<EvsDisplay> pActiveDisplay = sActiveDisplay.promote();
+    if (pActiveDisplay == nullptr) {
+        ALOGE("Somehow a display is being destroyed when the enumerator didn't know one existed");
+    } else if (sActiveDisplay != pDisplay) {
+        ALOGW("Ignoring close of previously orphaned display - why did a client steal?");
+    } else {
+        // Drop the active display
+        pActiveDisplay->forceShutdown();
+        sActiveDisplay = nullptr;
+    }
+
+    return Void();
+}
+
+
+Return<DisplayState> EvsEnumerator::getDisplayState()  {
+    ALOGD("getDisplayState");
+
+    // Do we still have a display object we think should be active?
+    sp<IEvsDisplay> pActiveDisplay = sActiveDisplay.promote();
+    if (pActiveDisplay != nullptr) {
+        return pActiveDisplay->getDisplayState();
+    } else {
+        return DisplayState::NOT_OPEN;
+    }
+}
+
+
+// Methods from ::android::hardware::automotive::evs::V1_1::IEvsEnumerator follow.
+Return<void> EvsEnumerator::getCameraList_1_1(getCameraList_1_1_cb _hidl_cb)  {
+    ALOGD("getCameraList");
+
+    const unsigned numCameras = sCameraList.size();
+
+    // Build up a packed array of CameraDesc for return
+    // NOTE:  Only has to live until the callback returns
+    std::vector<CameraDesc_1_1> descriptions;
+    descriptions.reserve(numCameras);
+    for (const auto& cam : sCameraList) {
+        descriptions.push_back( cam.desc );
+    }
+
+    // Encapsulate our camera descriptions in the HIDL vec type
+    hidl_vec<CameraDesc_1_1> hidlCameras(descriptions);
+
+    // Send back the results
+    ALOGD("reporting %zu cameras available", hidlCameras.size());
+    _hidl_cb(hidlCameras);
+
+    // HIDL convention says we return Void if we sent our result back via callback
+    return Void();
+}
+
+Return<sp<IEvsCamera_1_1>>
+EvsEnumerator::openCamera_1_1(const hidl_string& cameraId,
+                              const Stream& streamCfg) {
+    // Find the named camera
+    CameraRecord *pRecord = nullptr;
+    for (auto &&cam : sCameraList) {
+        if (cam.desc.v1.cameraId == cameraId) {
+            // Found a match!
+            pRecord = &cam;
+            break;
+        }
+    }
+
+    // Is this a recognized camera id?
+    if (!pRecord) {
+        ALOGE("Requested camera %s not found", cameraId.c_str());
+        return nullptr;
+    }
+
+    // Has this camera already been instantiated by another caller?
+    sp<EvsCamera> pActiveCamera = pRecord->activeInstance.promote();
+    if (pActiveCamera != nullptr) {
+        ALOGW("Killing previous camera because of new caller");
+        closeCamera(pActiveCamera);
+    }
+
+    // Construct a camera instance for the caller
+    if (sConfigManager == nullptr) {
+        pActiveCamera = EvsCamera::Create(cameraId.c_str());
+    } else {
+        pActiveCamera = EvsCamera::Create(cameraId.c_str(),
+                                          sConfigManager->getCameraInfo(cameraId),
+                                          &streamCfg);
+    }
+
+    pRecord->activeInstance = pActiveCamera;
+    if (pActiveCamera == nullptr) {
+        ALOGE("Failed to allocate new EvsCamera object for %s\n", cameraId.c_str());
+    }
+
+    return pActiveCamera;
+}
+
+
+EvsEnumerator::CameraRecord* EvsEnumerator::findCameraById(const std::string& cameraId) {
+    // Find the named camera
+    CameraRecord *pRecord = nullptr;
+    for (auto &&cam : sCameraList) {
+        if (cam.desc.v1.cameraId == cameraId) {
+            // Found a match!
+            pRecord = &cam;
+            break;
+        }
+    }
+
+    return pRecord;
+}
+
+} // namespace implementation
+} // namespace V1_1
+} // namespace evs
+} // namespace automotive
+} // namespace hardware
+} // namespace android
diff --git a/automotive/evs/1.1/default/EvsEnumerator.h b/automotive/evs/1.1/default/EvsEnumerator.h
new file mode 100644
index 0000000..475ec76
--- /dev/null
+++ b/automotive/evs/1.1/default/EvsEnumerator.h
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSCAMERAENUMERATOR_H
+#define ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSCAMERAENUMERATOR_H
+
+#include <android/hardware/automotive/evs/1.1/IEvsEnumerator.h>
+#include <android/hardware/automotive/evs/1.1/IEvsCamera.h>
+
+#include <list>
+
+#include "ConfigManager.h"
+
+using ::android::hardware::automotive::evs::V1_0::EvsResult;
+using ::android::hardware::automotive::evs::V1_0::IEvsDisplay;
+using ::android::hardware::automotive::evs::V1_0::DisplayState;
+using IEvsCamera_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsCamera;
+using IEvsCamera_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsCamera;
+using CameraDesc_1_0 = ::android::hardware::automotive::evs::V1_0::CameraDesc;
+using CameraDesc_1_1 = ::android::hardware::automotive::evs::V1_1::CameraDesc;
+
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace evs {
+namespace V1_1 {
+namespace implementation {
+
+
+class EvsCamera;    // from EvsCamera.h
+class EvsDisplay;   // from EvsDisplay.h
+
+
+class EvsEnumerator : public IEvsEnumerator {
+public:
+    // Methods from ::android::hardware::automotive::evs::V1_0::IEvsEnumerator follow.
+    Return<void>                getCameraList(getCameraList_cb _hidl_cb)  override;
+    Return<sp<IEvsCamera_1_0>>  openCamera(const hidl_string& cameraId) override;
+    Return<void>                closeCamera(const ::android::sp<IEvsCamera_1_0>& carCamera)  override;
+    Return<sp<IEvsDisplay>>     openDisplay()  override;
+    Return<void>                closeDisplay(const ::android::sp<IEvsDisplay>& display)  override;
+    Return<DisplayState>        getDisplayState()  override;
+
+    // Methods from ::android::hardware::automotive::evs::V1_1::IEvsEnumerator follow.
+    Return<void> getCameraList_1_1(getCameraList_1_1_cb _hidl_cb)  override;
+    Return<sp<IEvsCamera_1_1>>  openCamera_1_1(const hidl_string& cameraId,
+                                               const Stream& streamCfg) override;
+
+    // Implementation details
+    EvsEnumerator();
+
+private:
+    // NOTE:  All members values are static so that all clients operate on the same state
+    //        That is to say, this is effectively a singleton despite the fact that HIDL
+    //        constructs a new instance for each client.
+    struct CameraRecord {
+        CameraDesc_1_1      desc;
+        wp<EvsCamera>       activeInstance;
+
+        CameraRecord(const char *cameraId) : desc() { desc.v1.cameraId = cameraId; }
+    };
+
+    static CameraRecord* findCameraById(const std::string& cameraId);
+
+    static std::list<CameraRecord>   sCameraList;
+
+    // Weak pointer. Object destructs if client dies.
+    static wp<EvsDisplay>            sActiveDisplay;
+
+    static unique_ptr<ConfigManager> sConfigManager;
+};
+
+} // namespace implementation
+} // namespace V1_1
+} // namespace evs
+} // namespace automotive
+} // namespace hardware
+} // namespace android
+
+#endif  // ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSCAMERAENUMERATOR_H
diff --git a/automotive/evs/1.1/default/ServiceNames.h b/automotive/evs/1.1/default/ServiceNames.h
new file mode 100644
index 0000000..1178da5
--- /dev/null
+++ b/automotive/evs/1.1/default/ServiceNames.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+const static char kEnumeratorServiceName[] = "EvsEnumeratorHw";
diff --git a/automotive/evs/1.1/default/android.hardware.automotive.evs@1.1-service.rc b/automotive/evs/1.1/default/android.hardware.automotive.evs@1.1-service.rc
new file mode 100644
index 0000000..284b3fd
--- /dev/null
+++ b/automotive/evs/1.1/default/android.hardware.automotive.evs@1.1-service.rc
@@ -0,0 +1,5 @@
+service vendor.evs-hal-mock /vendor/bin/hw/android.hardware.automotive.evs@1.1-service
+    class hal
+    user automotive_evs
+    group automotive_evs
+    disabled
diff --git a/automotive/evs/1.1/default/resources/evs_default_configuration.xml b/automotive/evs/1.1/default/resources/evs_default_configuration.xml
new file mode 100644
index 0000000..692102e
--- /dev/null
+++ b/automotive/evs/1.1/default/resources/evs_default_configuration.xml
@@ -0,0 +1,68 @@
+<?xml version='1.0' encoding='utf-8'?>
+<!-- Copyright (C) 2019 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<!-- Exterior View System Example Configuration
+
+     Android Automotive axes are used to define coordinates.
+     See https://source.android.com/devices/sensors/sensor-types#auto_axes
+
+     Use evs_configuration.dtd with xmllint tool, to validate XML configuration file
+-->
+
+<configuration>
+    <!-- system configuration -->
+    <system>
+        <!-- number of cameras available to EVS -->
+        <num_cameras value='1'/>
+    </system>
+
+    <!-- camera device information -->
+    <camera>
+        <!-- camera device starts -->
+        <device id='/dev/video1' position='rear'>
+            <caps>
+                <!-- list of supported controls -->
+                <supported_controls>
+                    <control name='BRIGHTNESS' min='0' max='255'/>
+                    <control name='CONTRAST' min='0' max='255'/>
+                </supported_controls>
+
+                <stream id='0' width='640'  height='360'  format='RGBA_8888' framerate='30'/>
+            </caps>
+
+            <!-- list of parameters -->
+            <characteristics>
+                <!-- Camera intrinsic calibration matrix. See
+                     https://developer.android.com/reference/android/hardware/camera2/CameraCharacteristics.html#LENS_INTRINSIC_CALIBRATION
+                -->
+                <parameter
+                    name='LENS_INTRINSIC_CALIBRATION'
+                    type='float'
+                    size='5'
+                    value='0.0,0.0,0.0,0.0,0.0'
+                />
+            </characteristics>
+        </device>
+    </camera>
+    <display>
+        <device id='display0' position='driver'>
+            <caps>
+                <!-- list of supported inpu stream configurations -->
+                <stream id='0' width='1280' height='720' format='RGBA_8888' framerate='30'/>
+            </caps>
+        </device>
+    </display>
+</configuration>
+
diff --git a/automotive/evs/1.1/default/service.cpp b/automotive/evs/1.1/default/service.cpp
new file mode 100644
index 0000000..5135864
--- /dev/null
+++ b/automotive/evs/1.1/default/service.cpp
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.automotive.evs@1.1-service"
+
+#include <unistd.h>
+
+#include <hidl/HidlTransportSupport.h>
+#include <log/log.h>
+#include <utils/Errors.h>
+#include <utils/StrongPointer.h>
+
+#include "ServiceNames.h"
+#include "EvsEnumerator.h"
+#include "EvsDisplay.h"
+
+
+// libhidl:
+using android::hardware::configureRpcThreadpool;
+using android::hardware::joinRpcThreadpool;
+
+// Generated HIDL files
+using android::hardware::automotive::evs::V1_1::IEvsEnumerator;
+using android::hardware::automotive::evs::V1_0::IEvsDisplay;
+
+// The namespace in which all our implementation code lives
+using namespace android::hardware::automotive::evs::V1_1::implementation;
+using namespace android;
+
+
+int main() {
+    ALOGI("EVS Hardware Enumerator service is starting");
+    android::sp<IEvsEnumerator> service = new EvsEnumerator();
+
+    configureRpcThreadpool(1, true /* callerWillJoin */);
+
+    // Register our service -- if somebody is already registered by our name,
+    // they will be killed (their thread pool will throw an exception).
+    status_t status = service->registerAsService(kEnumeratorServiceName);
+    if (status == OK) {
+        ALOGD("%s is ready.", kEnumeratorServiceName);
+        joinRpcThreadpool();
+    } else {
+        ALOGE("Could not register service %s (%d).", kEnumeratorServiceName, status);
+    }
+
+    // In normal operation, we don't expect the thread pool to exit
+    ALOGE("EVS Hardware Enumerator is shutting down");
+    return 1;
+}
diff --git a/automotive/evs/1.1/types.hal b/automotive/evs/1.1/types.hal
new file mode 100644
index 0000000..dcb2abb
--- /dev/null
+++ b/automotive/evs/1.1/types.hal
@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs@1.1;
+
+import @1.0::CameraDesc;
+import @1.0::DisplayDesc;
+import @1.0::DisplayState;
+import @1.0::EvsResult;
+import android.hardware.graphics.common@1.2::HardwareBuffer;
+import android.hardware.camera.device@3.2::CameraMetadata;
+
+/**
+ * Structure describing the basic properties of an EVS camera, extended from its
+ * v1.0 declaration.
+ *
+ * The HAL is responsible for filling out this structure for each
+ * EVS camera in the system.
+ */
+struct CameraDesc {
+    @1.0::CameraDesc v1;
+    /**
+     * Store camera metadata such as lens characteristics.
+     */
+    CameraMetadata metadata;
+};
+
+/**
+ * Structure representing an image buffer through our APIs
+ *
+ * In addition to the handle to the graphics memory, we need to retain
+ * the properties of the buffer for easy reference and reconstruction of
+ * an ANativeWindowBuffer object on the remote side of API calls.
+ * (Not least because OpenGL expect an ANativeWindowBuffer* for us as a
+ * texture via eglCreateImageKHR().
+ */
+struct BufferDesc {
+    /**
+     * HIDL counterpart of `AHardwareBuffer_Desc`.  Please see
+     * hardware/interfaces/graphics/common/1.2/types.hal for more details.
+     */
+    HardwareBuffer buffer;
+    /**
+     * The size of a pixel in the units of bytes
+     */
+    uint32_t pixelSize;
+    /**
+     * Opaque value from driver
+     */
+    uint32_t bufferId;
+};
+
+/**
+ * Types of informative streaming events
+ */
+enum EvsEventType : uint32_t {
+    /**
+     * Video stream is started
+     */
+    STREAM_STARTED = 0,
+    /**
+     * Video stream is stopped
+     */
+    STREAM_STOPPED,
+    /**
+     * Video frame is dropped
+     */
+    FRAME_DROPPED,
+    /**
+     * Timeout happens
+     */
+    TIMEOUT,
+    /**
+     * Camera parameter is changed; payload contains a changed parameter ID and
+     * its value
+     */
+    PARAMETER_CHANGED,
+    /**
+     * Master role has become available
+     */
+    MASTER_RELEASED,
+};
+
+/**
+ * Structure that describes informative events occurred during EVS is streaming
+ */
+struct EvsEvent {
+    /**
+     * Type of an informative event
+     */
+    EvsEventType aType;
+    /**
+     * Possible additional information
+     */
+    uint32_t[4] payload;
+};
+
+/**
+ * EVS Camera Parameter
+ */
+enum CameraParam : uint32_t {
+    /**
+     * The brightness of image frames
+     */
+    BRIGHTNESS,
+    /**
+     * The contrast of image frames
+     */
+    CONTRAST,
+    /**
+     * Automatic gain/exposure control
+     */
+    AUTOGAIN,
+    /**
+     * Gain control
+     */
+    GAIN,
+    /**
+     * Automatic Whitebalance
+     */
+    AUTO_WHITE_BALANCE,
+    /**
+     * Manual white balance setting as a color temperature in Kelvin.
+     */
+    WHITE_BALANCE_TEMPERATURE,
+    /**
+     * Image sharpness adjustment
+     */
+    SHARPNESS,
+    /**
+     * Auto Exposure Control modes; auto, manual, shutter priority, or
+     * aperture priority.
+     */
+    AUTO_EXPOSURE,
+    /**
+     * Manual exposure time of the camera
+     */
+    ABSOLUTE_EXPOSURE,
+    /**
+     * Set the focal point of the camera to the specified position.  This
+     * parameter may not be effective when auto focus is enabled.
+     */
+    ABSOLUTE_FOCUS,
+    /**
+     * Enables continuous automatic focus adjustments.
+     */
+    AUTO_FOCUS,
+    /**
+     * Specify the objective lens focal length as an absolute value.
+     */
+    ABSOLUTE_ZOOM,
+};
diff --git a/automotive/evs/1.1/vts/functional/Android.bp b/automotive/evs/1.1/vts/functional/Android.bp
new file mode 100644
index 0000000..4753933
--- /dev/null
+++ b/automotive/evs/1.1/vts/functional/Android.bp
@@ -0,0 +1,42 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_test {
+    name: "VtsHalEvsV1_1TargetTest",
+    srcs: [
+        "FrameHandler.cpp",
+        "VtsHalEvsV1_1TargetTest.cpp",
+    ],
+    defaults: ["VtsHalTargetTestDefaults"],
+    shared_libs: [
+        "libui",
+        "libcamera_metadata",
+    ],
+    static_libs: [
+        "android.hardware.automotive.evs@1.0",
+        "android.hardware.automotive.evs@1.1",
+        "android.hardware.automotive.evs@common-default-lib",
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.common@1.1",
+        "android.hardware.graphics.common@1.2",
+        "android.hardware.camera.device@3.2",
+    ],
+    test_suites: ["general-tests"],
+    cflags: [
+        "-O0",
+        "-g",
+    ],
+}
diff --git a/automotive/evs/1.1/vts/functional/FrameHandler.cpp b/automotive/evs/1.1/vts/functional/FrameHandler.cpp
new file mode 100644
index 0000000..6d53652
--- /dev/null
+++ b/automotive/evs/1.1/vts/functional/FrameHandler.cpp
@@ -0,0 +1,384 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "VtsHalEvsTest"
+
+#include "FrameHandler.h"
+#include "FormatConvert.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <chrono>
+
+#include <android/log.h>
+#include <cutils/native_handle.h>
+#include <ui/GraphicBuffer.h>
+
+using namespace std::chrono_literals;
+
+FrameHandler::FrameHandler(android::sp <IEvsCamera> pCamera, CameraDesc cameraInfo,
+                           android::sp <IEvsDisplay> pDisplay,
+                           BufferControlFlag mode) :
+    mCamera(pCamera),
+    mCameraInfo(cameraInfo),
+    mDisplay(pDisplay),
+    mReturnMode(mode) {
+    // Nothing but member initialization here...
+}
+
+
+void FrameHandler::shutdown()
+{
+    // Make sure we're not still streaming
+    blockingStopStream();
+
+    // At this point, the receiver thread is no longer running, so we can safely drop
+    // our remote object references so they can be freed
+    mCamera = nullptr;
+    mDisplay = nullptr;
+}
+
+
+bool FrameHandler::startStream() {
+    // Tell the camera to start streaming
+    Return<EvsResult> result = mCamera->startVideoStream(this);
+    if (result != EvsResult::OK) {
+        return false;
+    }
+
+    // Mark ourselves as running
+    mLock.lock();
+    mRunning = true;
+    mLock.unlock();
+
+    return true;
+}
+
+
+void FrameHandler::asyncStopStream() {
+    // Tell the camera to stop streaming.
+    // This will result in a null frame being delivered when the stream actually stops.
+    mCamera->stopVideoStream();
+}
+
+
+void FrameHandler::blockingStopStream() {
+    // Tell the stream to stop
+    asyncStopStream();
+
+    // Wait until the stream has actually stopped
+    std::unique_lock<std::mutex> lock(mLock);
+    if (mRunning) {
+        mEventSignal.wait(lock, [this]() { return !mRunning; });
+    }
+}
+
+
+bool FrameHandler::returnHeldBuffer() {
+    std::unique_lock<std::mutex> lock(mLock);
+
+    // Return the oldest buffer we're holding
+    if (mHeldBuffers.empty()) {
+        // No buffers are currently held
+        return false;
+    }
+
+    BufferDesc_1_1 buffer = mHeldBuffers.front();
+    mHeldBuffers.pop();
+    mCamera->doneWithFrame_1_1(buffer);
+
+    return true;
+}
+
+
+bool FrameHandler::isRunning() {
+    std::unique_lock<std::mutex> lock(mLock);
+    return mRunning;
+}
+
+
+void FrameHandler::waitForFrameCount(unsigned frameCount) {
+    // Wait until we've seen at least the requested number of frames (could be more)
+    std::unique_lock<std::mutex> lock(mLock);
+    mFrameSignal.wait(lock, [this, frameCount](){
+                                return mFramesReceived >= frameCount;
+                            });
+}
+
+
+void FrameHandler::getFramesCounters(unsigned* received, unsigned* displayed) {
+    std::unique_lock<std::mutex> lock(mLock);
+
+    if (received) {
+        *received = mFramesReceived;
+    }
+    if (displayed) {
+        *displayed = mFramesDisplayed;
+    }
+}
+
+
+Return<void> FrameHandler::deliverFrame(const BufferDesc_1_0& bufferArg) {
+    ALOGW("A frame delivered via v1.0 method is rejected.");
+    mCamera->doneWithFrame(bufferArg);
+    return Void();
+}
+
+
+Return<void> FrameHandler::deliverFrame_1_1(const BufferDesc_1_1& bufDesc) {
+    const AHardwareBuffer_Desc* pDesc =
+        reinterpret_cast<const AHardwareBuffer_Desc *>(&bufDesc.buffer.description);
+    ALOGD("Received a frame from the camera (%p)",
+          bufDesc.buffer.nativeHandle.getNativeHandle());
+
+    // Store a dimension of a received frame.
+    mFrameWidth = pDesc->width;
+    mFrameHeight = pDesc->height;
+
+    // If we were given an opened display at construction time, then send the received
+    // image back down the camera.
+    if (mDisplay.get()) {
+        // Get the output buffer we'll use to display the imagery
+        BufferDesc_1_0 tgtBuffer = {};
+        mDisplay->getTargetBuffer([&tgtBuffer](const BufferDesc_1_0& buff) {
+                                      tgtBuffer = buff;
+                                  }
+        );
+
+        if (tgtBuffer.memHandle == nullptr) {
+            printf("Didn't get target buffer - frame lost\n");
+            ALOGE("Didn't get requested output buffer -- skipping this frame.");
+        } else {
+            // Copy the contents of the of buffer.memHandle into tgtBuffer
+            copyBufferContents(tgtBuffer, bufDesc);
+
+            // Send the target buffer back for display
+            Return<EvsResult> result = mDisplay->returnTargetBufferForDisplay(tgtBuffer);
+            if (!result.isOk()) {
+                printf("HIDL error on display buffer (%s)- frame lost\n",
+                       result.description().c_str());
+                ALOGE("Error making the remote function call.  HIDL said %s",
+                      result.description().c_str());
+            } else if (result != EvsResult::OK) {
+                printf("Display reported error - frame lost\n");
+                ALOGE("We encountered error %d when returning a buffer to the display!",
+                      (EvsResult) result);
+            } else {
+                // Everything looks good!
+                // Keep track so tests or watch dogs can monitor progress
+                mLock.lock();
+                mFramesDisplayed++;
+                mLock.unlock();
+            }
+        }
+    }
+
+
+    switch (mReturnMode) {
+    case eAutoReturn:
+        // Send the camera buffer back now that the client has seen it
+        ALOGD("Calling doneWithFrame");
+        mCamera->doneWithFrame_1_1(bufDesc);
+        break;
+    case eNoAutoReturn:
+        // Hang onto the buffer handle for now -- the client will return it explicitly later
+        mHeldBuffers.push(bufDesc);
+    }
+
+    mLock.lock();
+    ++mFramesReceived;
+    mLock.unlock();
+    mFrameSignal.notify_all();
+
+    ALOGD("Frame handling complete");
+
+    return Void();
+}
+
+
+Return<void> FrameHandler::notify(const EvsEvent& event) {
+    // Local flag we use to keep track of when the stream is stopping
+    mLock.lock();
+    mLatestEventDesc = event;
+    if (mLatestEventDesc.aType == EvsEventType::STREAM_STOPPED) {
+        // Signal that the last frame has been received and the stream is stopped
+        mRunning = false;
+    } else if (mLatestEventDesc.aType == EvsEventType::PARAMETER_CHANGED) {
+        ALOGD("Camera parameter 0x%X is changed to 0x%X",
+              mLatestEventDesc.payload[0], mLatestEventDesc.payload[1]);
+    } else {
+        ALOGD("Received an event %s", eventToString(mLatestEventDesc.aType));
+    }
+    mLock.unlock();
+    mEventSignal.notify_all();
+
+    return Void();
+}
+
+
+bool FrameHandler::copyBufferContents(const BufferDesc_1_0& tgtBuffer,
+                                      const BufferDesc_1_1& srcBuffer) {
+    bool success = true;
+    const AHardwareBuffer_Desc* pSrcDesc =
+        reinterpret_cast<const AHardwareBuffer_Desc *>(&srcBuffer.buffer.description);
+
+    // Make sure we don't run off the end of either buffer
+    const unsigned width  = std::min(tgtBuffer.width,
+                                     pSrcDesc->width);
+    const unsigned height = std::min(tgtBuffer.height,
+                                     pSrcDesc->height);
+
+    sp<android::GraphicBuffer> tgt = new android::GraphicBuffer(tgtBuffer.memHandle,
+                                                                android::GraphicBuffer::CLONE_HANDLE,
+                                                                tgtBuffer.width,
+                                                                tgtBuffer.height,
+                                                                tgtBuffer.format,
+                                                                1,
+                                                                tgtBuffer.usage,
+                                                                tgtBuffer.stride);
+    sp<android::GraphicBuffer> src = new android::GraphicBuffer(srcBuffer.buffer.nativeHandle,
+                                                                android::GraphicBuffer::CLONE_HANDLE,
+                                                                pSrcDesc->width,
+                                                                pSrcDesc->height,
+                                                                pSrcDesc->format,
+                                                                pSrcDesc->layers,
+                                                                pSrcDesc->usage,
+                                                                pSrcDesc->stride);
+
+    // Lock our source buffer for reading (current expectation are for this to be NV21 format)
+    uint8_t* srcPixels = nullptr;
+    src->lock(GRALLOC_USAGE_SW_READ_OFTEN, (void**)&srcPixels);
+
+    // Lock our target buffer for writing (should be either RGBA8888 or BGRA8888 format)
+    uint32_t* tgtPixels = nullptr;
+    tgt->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)&tgtPixels);
+
+    if (srcPixels && tgtPixels) {
+        using namespace ::android::hardware::automotive::evs::common;
+        if (tgtBuffer.format == HAL_PIXEL_FORMAT_RGBA_8888) {
+            if (pSrcDesc->format == HAL_PIXEL_FORMAT_YCRCB_420_SP) {   // 420SP == NV21
+                Utils::copyNV21toRGB32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
+            } else if (pSrcDesc->format == HAL_PIXEL_FORMAT_YV12) { // YUV_420P == YV12
+                Utils::copyYV12toRGB32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
+            } else if (pSrcDesc->format == HAL_PIXEL_FORMAT_YCBCR_422_I) { // YUYV
+                Utils::copyYUYVtoRGB32(width, height,
+                                       srcPixels, pSrcDesc->stride,
+                                       tgtPixels, tgtBuffer.stride);
+            } else if (pSrcDesc->format == tgtBuffer.format) {  // 32bit RGBA
+                Utils::copyMatchedInterleavedFormats(width, height,
+                                                     srcPixels, pSrcDesc->stride,
+                                                     tgtPixels, tgtBuffer.stride,
+                                                     tgtBuffer.pixelSize);
+            } else {
+                ALOGE("Camera buffer format is not supported");
+                success = false;
+            }
+        } else if (tgtBuffer.format == HAL_PIXEL_FORMAT_BGRA_8888) {
+            if (pSrcDesc->format == HAL_PIXEL_FORMAT_YCRCB_420_SP) {   // 420SP == NV21
+                Utils::copyNV21toBGR32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
+            } else if (pSrcDesc->format == HAL_PIXEL_FORMAT_YV12) { // YUV_420P == YV12
+                Utils::copyYV12toBGR32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
+            } else if (pSrcDesc->format == HAL_PIXEL_FORMAT_YCBCR_422_I) { // YUYV
+                Utils::copyYUYVtoBGR32(width, height,
+                                       srcPixels, pSrcDesc->stride,
+                                       tgtPixels, tgtBuffer.stride);
+            } else if (pSrcDesc->format == tgtBuffer.format) {  // 32bit RGBA
+                Utils::copyMatchedInterleavedFormats(width, height,
+                                                     srcPixels, pSrcDesc->stride,
+                                                     tgtPixels, tgtBuffer.stride,
+                                                     tgtBuffer.pixelSize);
+            } else {
+                ALOGE("Camera buffer format is not supported");
+                success = false;
+            }
+        } else {
+            // We always expect 32 bit RGB for the display output for now.  Is there a need for 565?
+            ALOGE("Diplay buffer is always expected to be 32bit RGBA");
+            success = false;
+        }
+    } else {
+        ALOGE("Failed to lock buffer contents for contents transfer");
+        success = false;
+    }
+
+    if (srcPixels) {
+        src->unlock();
+    }
+    if (tgtPixels) {
+        tgt->unlock();
+    }
+
+    return success;
+}
+
+void FrameHandler::getFrameDimension(unsigned* width, unsigned* height) {
+    if (width) {
+        *width = mFrameWidth;
+    }
+
+    if (height) {
+        *height = mFrameHeight;
+    }
+}
+
+bool FrameHandler::waitForEvent(const EvsEventType aTargetEvent,
+                                EvsEvent &event) {
+    // Wait until we get an expected parameter change event.
+    std::unique_lock<std::mutex> lock(mLock);
+    auto now = std::chrono::system_clock::now();
+    bool result = mEventSignal.wait_until(lock, now + 5s,
+        [this, aTargetEvent, &event](){
+            bool flag = mLatestEventDesc.aType == aTargetEvent;
+            if (flag) {
+                event.aType = mLatestEventDesc.aType;
+                event.payload[0] = mLatestEventDesc.payload[0];
+                event.payload[1] = mLatestEventDesc.payload[1];
+            }
+
+            return flag;
+        }
+    );
+
+    return !result;
+}
+
+const char *FrameHandler::eventToString(const EvsEventType aType) {
+    switch (aType) {
+        case EvsEventType::STREAM_STARTED:
+            return "STREAM_STARTED";
+        case EvsEventType::STREAM_STOPPED:
+            return "STREAM_STOPPED";
+        case EvsEventType::FRAME_DROPPED:
+            return "FRAME_DROPPED";
+        case EvsEventType::TIMEOUT:
+            return "TIMEOUT";
+        case EvsEventType::PARAMETER_CHANGED:
+            return "PARAMETER_CHANGED";
+        case EvsEventType::MASTER_RELEASED:
+            return "MASTER_RELEASED";
+        default:
+            return "Unknown";
+    }
+}
+
diff --git a/automotive/evs/1.1/vts/functional/FrameHandler.h b/automotive/evs/1.1/vts/functional/FrameHandler.h
new file mode 100644
index 0000000..e5f1b8f
--- /dev/null
+++ b/automotive/evs/1.1/vts/functional/FrameHandler.h
@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef EVS_VTS_FRAMEHANDLER_H
+#define EVS_VTS_FRAMEHANDLER_H
+
+#include <queue>
+
+#include <FrameHandler.h>
+
+#include <android/hardware/automotive/evs/1.1/IEvsCameraStream.h>
+#include <android/hardware/automotive/evs/1.1/IEvsCamera.h>
+#include <android/hardware/automotive/evs/1.0/IEvsDisplay.h>
+
+using namespace ::android::hardware::automotive::evs::V1_1;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_handle;
+using ::android::sp;
+using ::android::hardware::automotive::evs::V1_0::IEvsDisplay;
+using ::android::hardware::automotive::evs::V1_0::EvsResult;
+using BufferDesc_1_0 = ::android::hardware::automotive::evs::V1_0::BufferDesc;
+using BufferDesc_1_1 = ::android::hardware::automotive::evs::V1_1::BufferDesc;
+
+
+/*
+ * FrameHandler:
+ * This class can be used to receive camera imagery from an IEvsCamera implementation.  Given an
+ * IEvsDisplay instance at startup, it will forward the received imagery to the display,
+ * providing a trivial implementation of a rear vew camera type application.
+ * Note that the video frames are delivered on a background thread, while the control interface
+ * is actuated from the applications foreground thread.
+ */
+class FrameHandler : public IEvsCameraStream {
+public:
+    enum BufferControlFlag {
+        eAutoReturn,
+        eNoAutoReturn,
+    };
+
+    FrameHandler(android::sp <IEvsCamera> pCamera, CameraDesc cameraInfo,
+                 android::sp <IEvsDisplay> pDisplay = nullptr,
+                 BufferControlFlag mode = eAutoReturn);
+    virtual ~FrameHandler() {
+        if (mCamera != nullptr) {
+            /* shutdown a camera explicitly */
+            shutdown();
+        }
+    }
+
+    void shutdown();
+
+    bool startStream();
+    void asyncStopStream();
+    void blockingStopStream();
+
+    bool returnHeldBuffer();
+
+    bool isRunning();
+
+    void waitForFrameCount(unsigned frameCount);
+    bool waitForEvent(const EvsEventType aTargetEvent,
+                            EvsEvent &eventDesc);
+    void getFramesCounters(unsigned* received, unsigned* displayed);
+    void getFrameDimension(unsigned* width, unsigned* height);
+
+private:
+    // Implementation for ::android::hardware::automotive::evs::V1_0::IEvsCameraStream
+    Return<void> deliverFrame(const BufferDesc_1_0& buffer) override;
+
+    // Implementation for ::android::hardware::automotive::evs::V1_1::IEvsCameraStream
+    Return<void> deliverFrame_1_1(const BufferDesc_1_1& buffer) override;
+    Return<void> notify(const EvsEvent& event) override;
+
+    // Local implementation details
+    bool copyBufferContents(const BufferDesc_1_0& tgtBuffer, const BufferDesc_1_1& srcBuffer);
+    const char *eventToString(const EvsEventType aType);
+
+    // Values initialized as startup
+    android::sp <IEvsCamera>    mCamera;
+    CameraDesc                  mCameraInfo;
+    android::sp <IEvsDisplay>   mDisplay;
+    BufferControlFlag           mReturnMode;
+
+    // Since we get frames delivered to us asynchronously via the IEvsCameraStream interface,
+    // we need to protect all member variables that may be modified while we're streaming
+    // (ie: those below)
+    std::mutex                  mLock;
+    std::condition_variable     mEventSignal;
+    std::condition_variable     mFrameSignal;
+
+    std::queue<BufferDesc_1_1>  mHeldBuffers;
+    bool                        mRunning = false;
+    unsigned                    mFramesReceived = 0;    // Simple counter -- rolls over eventually!
+    unsigned                    mFramesDisplayed = 0;   // Simple counter -- rolls over eventually!
+    unsigned                    mFrameWidth = 0;
+    unsigned                    mFrameHeight = 0;
+    EvsEvent                    mLatestEventDesc;
+};
+
+
+#endif //EVS_VTS_FRAMEHANDLER_H
diff --git a/automotive/evs/1.1/vts/functional/VtsHalEvsV1_1TargetTest.cpp b/automotive/evs/1.1/vts/functional/VtsHalEvsV1_1TargetTest.cpp
new file mode 100644
index 0000000..1d3fd87
--- /dev/null
+++ b/automotive/evs/1.1/vts/functional/VtsHalEvsV1_1TargetTest.cpp
@@ -0,0 +1,1516 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "VtsHalEvsTest"
+
+
+// Note:  We have't got a great way to indicate which target
+// should be tested, so we'll leave the interface served by the
+// default (mock) EVS driver here for easy reference.  All
+// actual EVS drivers should serve on the EvsEnumeratorHw name,
+// however, so the code is checked in that way.
+//const static char kEnumeratorName[]  = "EvsEnumeratorHw-Mock";
+const static char kEnumeratorName[]  = "EvsEnumeratorHw";
+
+
+// These values are called out in the EVS design doc (as of Mar 8, 2017)
+static const int kMaxStreamStartMilliseconds = 500;
+static const int kMinimumFramesPerSecond = 10;
+
+static const int kSecondsToMilliseconds = 1000;
+static const int kMillisecondsToMicroseconds = 1000;
+static const float kNanoToMilliseconds = 0.000001f;
+static const float kNanoToSeconds = 0.000000001f;
+
+
+#include "FrameHandler.h"
+
+#include <cstdio>
+#include <cstring>
+#include <cstdlib>
+
+#include <hidl/HidlTransportSupport.h>
+#include <hwbinder/ProcessState.h>
+#include <log/log.h>
+#include <utils/Errors.h>
+#include <utils/StrongPointer.h>
+
+#include <android/log.h>
+#include <android/hardware/automotive/evs/1.1/IEvsCamera.h>
+#include <android/hardware/automotive/evs/1.1/IEvsCameraStream.h>
+#include <android/hardware/automotive/evs/1.1/IEvsEnumerator.h>
+#include <android/hardware/automotive/evs/1.0/IEvsDisplay.h>
+#include <android/hardware/camera/device/3.2/ICameraDevice.h>
+#include <system/camera_metadata.h>
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <VtsHalHidlTargetTestEnvBase.h>
+
+using namespace ::android::hardware::automotive::evs::V1_1;
+
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_handle;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+using ::android::hardware::camera::device::V3_2::Stream;
+using ::android::hardware::automotive::evs::V1_0::DisplayDesc;
+using ::android::hardware::automotive::evs::V1_0::DisplayState;
+using ::android::hardware::graphics::common::V1_0::PixelFormat;
+using IEvsCamera_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsCamera;
+using IEvsCamera_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsCamera;
+
+/*
+ * Plese note that this is different from what is defined in
+ * libhardware/modules/camera/3_4/metadata/types.h; this has one additional
+ * field to store a framerate.
+ */
+const size_t kStreamCfgSz = 5;
+typedef struct {
+    int32_t width;
+    int32_t height;
+    int32_t format;
+    int32_t direction;
+    int32_t framerate;
+} RawStreamConfig;
+
+
+// Test environment for Evs HIDL HAL.
+class EvsHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
+   public:
+    // get the test environment singleton
+    static EvsHidlEnvironment* Instance() {
+        static EvsHidlEnvironment* instance = new EvsHidlEnvironment;
+        return instance;
+    }
+
+    virtual void registerTestServices() override { registerTestService<IEvsEnumerator>(); }
+
+   private:
+    EvsHidlEnvironment() {}
+};
+
+// The main test class for EVS
+class EvsHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+public:
+    virtual void SetUp() override {
+        // Make sure we can connect to the enumerator
+        string service_name =
+            EvsHidlEnvironment::Instance()->getServiceName<IEvsEnumerator>(kEnumeratorName);
+        pEnumerator = getService<IEvsEnumerator>(service_name);
+        ASSERT_NE(pEnumerator.get(), nullptr);
+
+        mIsHwModule = !service_name.compare(kEnumeratorName);
+    }
+
+    virtual void TearDown() override {}
+
+protected:
+    void loadCameraList() {
+        // SetUp() must run first!
+        assert(pEnumerator != nullptr);
+
+        // Get the camera list
+        pEnumerator->getCameraList_1_1(
+            [this](hidl_vec <CameraDesc> cameraList) {
+                ALOGI("Camera list callback received %zu cameras",
+                      cameraList.size());
+                cameraInfo.reserve(cameraList.size());
+                for (auto&& cam: cameraList) {
+                    ALOGI("Found camera %s", cam.v1.cameraId.c_str());
+                    cameraInfo.push_back(cam);
+                }
+            }
+        );
+
+        // We insist on at least one camera for EVS to pass any camera tests
+        ASSERT_GE(cameraInfo.size(), 1u);
+    }
+
+    sp<IEvsEnumerator>        pEnumerator;    // Every test needs access to the service
+    std::vector <CameraDesc>  cameraInfo;     // Empty unless/until loadCameraList() is called
+    bool                      mIsHwModule;    // boolean to tell current module under testing
+                                              // is HW module implementation.
+};
+
+
+// Test cases, their implementations, and corresponding requirements are
+// documented at go/aae-evs-public-api-test.
+
+/*
+ * CameraOpenClean:
+ * Opens each camera reported by the enumerator and then explicitly closes it via a
+ * call to closeCamera.  Then repeats the test to ensure all cameras can be reopened.
+ */
+TEST_F(EvsHidlTest, CameraOpenClean) {
+    ALOGI("Starting CameraOpenClean test");
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Open and close each camera twice
+    for (auto&& cam: cameraInfo) {
+        for (int pass = 0; pass < 2; pass++) {
+            sp<IEvsCamera_1_1> pCam =
+                IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+                .withDefault(nullptr);
+            ASSERT_NE(pCam, nullptr);
+
+            // Verify that this camera self-identifies correctly
+            pCam->getCameraInfo_1_1([&cam](CameraDesc desc) {
+                                        ALOGD("Found camera %s", desc.v1.cameraId.c_str());
+                                        EXPECT_EQ(cam.v1.cameraId, desc.v1.cameraId);
+                                    }
+            );
+
+            // Explicitly close the camera so resources are released right away
+            pEnumerator->closeCamera(pCam);
+        }
+    }
+}
+
+
+/*
+ * CameraOpenAggressive:
+ * Opens each camera reported by the enumerator twice in a row without an intervening closeCamera
+ * call.  This ensures that the intended "aggressive open" behavior works.  This is necessary for
+ * the system to be tolerant of shutdown/restart race conditions.
+ */
+TEST_F(EvsHidlTest, CameraOpenAggressive) {
+    ALOGI("Starting CameraOpenAggressive test");
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Open and close each camera twice
+    for (auto&& cam: cameraInfo) {
+        sp<IEvsCamera_1_1> pCam =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam, nullptr);
+
+        // Verify that this camera self-identifies correctly
+        pCam->getCameraInfo_1_1([&cam](CameraDesc desc) {
+                                    ALOGD("Found camera %s", desc.v1.cameraId.c_str());
+                                    EXPECT_EQ(cam.v1.cameraId, desc.v1.cameraId);
+                                }
+        );
+
+        sp<IEvsCamera_1_1> pCam2 =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam, pCam2);
+        ASSERT_NE(pCam2, nullptr);
+
+        Return<EvsResult> result = pCam->setMaxFramesInFlight(2);
+        if (mIsHwModule) {
+            // Verify that the old camera rejects calls via HW module.
+            EXPECT_EQ(EvsResult::OWNERSHIP_LOST, EvsResult(result));
+        } else {
+            // default implementation supports multiple clients.
+            EXPECT_EQ(EvsResult::OK, EvsResult(result));
+        }
+
+        // Close the superceded camera
+        pEnumerator->closeCamera(pCam);
+
+        // Verify that the second camera instance self-identifies correctly
+        pCam2->getCameraInfo_1_1([&cam](CameraDesc desc) {
+                                     ALOGD("Found camera %s", desc.v1.cameraId.c_str());
+                                     EXPECT_EQ(cam.v1.cameraId, desc.v1.cameraId);
+                                 }
+        );
+
+        // Close the second camera instance
+        pEnumerator->closeCamera(pCam2);
+    }
+
+    // Sleep here to ensure the destructor cleanup has time to run so we don't break follow on tests
+    sleep(1);   // I hate that this is an arbitrary time to wait.  :(  b/36122635
+}
+
+
+/*
+ * CameraStreamPerformance:
+ * Measure and qualify the stream start up time and streaming frame rate of each reported camera
+ */
+TEST_F(EvsHidlTest, CameraStreamPerformance) {
+    ALOGI("Starting CameraStreamPerformance test");
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        sp<IEvsCamera_1_1> pCam =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam, nullptr);
+
+        // Set up a frame receiver object which will fire up its own thread
+        sp<FrameHandler> frameHandler = new FrameHandler(pCam, cam,
+                                                         nullptr,
+                                                         FrameHandler::eAutoReturn);
+
+        // Start the camera's video stream
+        nsecs_t start = systemTime(SYSTEM_TIME_MONOTONIC);
+        bool startResult = frameHandler->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Ensure the first frame arrived within the expected time
+        frameHandler->waitForFrameCount(1);
+        nsecs_t firstFrame = systemTime(SYSTEM_TIME_MONOTONIC);
+        nsecs_t timeToFirstFrame = systemTime(SYSTEM_TIME_MONOTONIC) - start;
+        EXPECT_LE(nanoseconds_to_milliseconds(timeToFirstFrame), kMaxStreamStartMilliseconds);
+        printf("Measured time to first frame %0.2f ms\n", timeToFirstFrame * kNanoToMilliseconds);
+        ALOGI("Measured time to first frame %0.2f ms", timeToFirstFrame * kNanoToMilliseconds);
+
+        // Check aspect ratio
+        unsigned width = 0, height = 0;
+        frameHandler->getFrameDimension(&width, &height);
+        EXPECT_GE(width, height);
+
+        // Wait a bit, then ensure we get at least the required minimum number of frames
+        sleep(5);
+        nsecs_t end = systemTime(SYSTEM_TIME_MONOTONIC);
+        unsigned framesReceived = 0;
+        frameHandler->getFramesCounters(&framesReceived, nullptr);
+        framesReceived = framesReceived - 1;    // Back out the first frame we already waited for
+        nsecs_t runTime = end - firstFrame;
+        float framesPerSecond = framesReceived / (runTime * kNanoToSeconds);
+        printf("Measured camera rate %3.2f fps\n", framesPerSecond);
+        ALOGI("Measured camera rate %3.2f fps", framesPerSecond);
+        EXPECT_GE(framesPerSecond, kMinimumFramesPerSecond);
+
+        // Even when the camera pointer goes out of scope, the FrameHandler object will
+        // keep the stream alive unless we tell it to shutdown.
+        // Also note that the FrameHandle and the Camera have a mutual circular reference, so
+        // we have to break that cycle in order for either of them to get cleaned up.
+        frameHandler->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCam);
+    }
+}
+
+
+/*
+ * CameraStreamBuffering:
+ * Ensure the camera implementation behaves properly when the client holds onto buffers for more
+ * than one frame time.  The camera must cleanly skip frames until the client is ready again.
+ */
+TEST_F(EvsHidlTest, CameraStreamBuffering) {
+    ALOGI("Starting CameraStreamBuffering test");
+
+    // Arbitrary constant (should be > 1 and less than crazy)
+    static const unsigned int kBuffersToHold = 6;
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+
+        sp<IEvsCamera_1_1> pCam =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam, nullptr);
+
+        // Ask for a crazy number of buffers in flight to ensure it errors correctly
+        Return<EvsResult> badResult = pCam->setMaxFramesInFlight(0xFFFFFFFF);
+        EXPECT_EQ(EvsResult::BUFFER_NOT_AVAILABLE, badResult);
+
+        // Now ask for exactly two buffers in flight as we'll test behavior in that case
+        Return<EvsResult> goodResult = pCam->setMaxFramesInFlight(kBuffersToHold);
+        EXPECT_EQ(EvsResult::OK, goodResult);
+
+
+        // Set up a frame receiver object which will fire up its own thread.
+        sp<FrameHandler> frameHandler = new FrameHandler(pCam, cam,
+                                                         nullptr,
+                                                         FrameHandler::eNoAutoReturn);
+
+        // Start the camera's video stream
+        bool startResult = frameHandler->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Check that the video stream stalls once we've gotten exactly the number of buffers
+        // we requested since we told the frameHandler not to return them.
+        sleep(2);   // 1 second should be enough for at least 5 frames to be delivered worst case
+        unsigned framesReceived = 0;
+        frameHandler->getFramesCounters(&framesReceived, nullptr);
+        ASSERT_EQ(kBuffersToHold, framesReceived) << "Stream didn't stall at expected buffer limit";
+
+
+        // Give back one buffer
+        bool didReturnBuffer = frameHandler->returnHeldBuffer();
+        EXPECT_TRUE(didReturnBuffer);
+
+        // Once we return a buffer, it shouldn't take more than 1/10 second to get a new one
+        // filled since we require 10fps minimum -- but give a 10% allowance just in case.
+        usleep(110 * kMillisecondsToMicroseconds);
+        frameHandler->getFramesCounters(&framesReceived, nullptr);
+        EXPECT_EQ(kBuffersToHold+1, framesReceived) << "Stream should've resumed";
+
+        // Even when the camera pointer goes out of scope, the FrameHandler object will
+        // keep the stream alive unless we tell it to shutdown.
+        // Also note that the FrameHandle and the Camera have a mutual circular reference, so
+        // we have to break that cycle in order for either of them to get cleaned up.
+        frameHandler->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCam);
+    }
+}
+
+
+/*
+ * CameraToDisplayRoundTrip:
+ * End to end test of data flowing from the camera to the display.  Each delivered frame of camera
+ * imagery is simply copied to the display buffer and presented on screen.  This is the one test
+ * which a human could observe to see the operation of the system on the physical display.
+ */
+TEST_F(EvsHidlTest, CameraToDisplayRoundTrip) {
+    ALOGI("Starting CameraToDisplayRoundTrip test");
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Request exclusive access to the EVS display
+    sp<IEvsDisplay> pDisplay = pEnumerator->openDisplay();
+    ASSERT_NE(pDisplay, nullptr);
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        sp<IEvsCamera_1_1> pCam =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam, nullptr);
+
+        // Set up a frame receiver object which will fire up its own thread.
+        sp<FrameHandler> frameHandler = new FrameHandler(pCam, cam,
+                                                         pDisplay,
+                                                         FrameHandler::eAutoReturn);
+
+
+        // Activate the display
+        pDisplay->setDisplayState(DisplayState::VISIBLE_ON_NEXT_FRAME);
+
+        // Start the camera's video stream
+        bool startResult = frameHandler->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Wait a while to let the data flow
+        static const int kSecondsToWait = 5;
+        const int streamTimeMs = kSecondsToWait * kSecondsToMilliseconds -
+                                 kMaxStreamStartMilliseconds;
+        const unsigned minimumFramesExpected = streamTimeMs * kMinimumFramesPerSecond /
+                                               kSecondsToMilliseconds;
+        sleep(kSecondsToWait);
+        unsigned framesReceived = 0;
+        unsigned framesDisplayed = 0;
+        frameHandler->getFramesCounters(&framesReceived, &framesDisplayed);
+        EXPECT_EQ(framesReceived, framesDisplayed);
+        EXPECT_GE(framesDisplayed, minimumFramesExpected);
+
+        // Turn off the display (yes, before the stream stops -- it should be handled)
+        pDisplay->setDisplayState(DisplayState::NOT_VISIBLE);
+
+        // Shut down the streamer
+        frameHandler->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCam);
+    }
+
+    // Explicitly release the display
+    pEnumerator->closeDisplay(pDisplay);
+}
+
+
+/*
+ * MultiCameraStream:
+ * Verify that each client can start and stop video streams on the same
+ * underlying camera.
+ */
+TEST_F(EvsHidlTest, MultiCameraStream) {
+    ALOGI("Starting MultiCameraStream test");
+
+    if (mIsHwModule) {
+        // This test is not for HW module implementation.
+        return;
+    }
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        // Create two camera clients.
+        sp<IEvsCamera_1_1> pCam0 =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam0, nullptr);
+
+        sp<IEvsCamera_1_1> pCam1 =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam1, nullptr);
+
+        // Set up per-client frame receiver objects which will fire up its own thread
+        sp<FrameHandler> frameHandler0 = new FrameHandler(pCam0, cam,
+                                                          nullptr,
+                                                          FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandler0, nullptr);
+
+        sp<FrameHandler> frameHandler1 = new FrameHandler(pCam1, cam,
+                                                          nullptr,
+                                                          FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandler1, nullptr);
+
+        // Start the camera's video stream via client 0
+        bool startResult = false;
+        startResult = frameHandler0->startStream() &&
+                      frameHandler1->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Ensure the stream starts
+        frameHandler0->waitForFrameCount(1);
+        frameHandler1->waitForFrameCount(1);
+
+        nsecs_t firstFrame = systemTime(SYSTEM_TIME_MONOTONIC);
+
+        // Wait a bit, then ensure both clients get at least the required minimum number of frames
+        sleep(5);
+        nsecs_t end = systemTime(SYSTEM_TIME_MONOTONIC);
+        unsigned framesReceived0 = 0, framesReceived1 = 0;
+        frameHandler0->getFramesCounters(&framesReceived0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceived1, nullptr);
+        framesReceived0 = framesReceived0 - 1;    // Back out the first frame we already waited for
+        framesReceived1 = framesReceived1 - 1;    // Back out the first frame we already waited for
+        nsecs_t runTime = end - firstFrame;
+        float framesPerSecond0 = framesReceived0 / (runTime * kNanoToSeconds);
+        float framesPerSecond1 = framesReceived1 / (runTime * kNanoToSeconds);
+        ALOGI("Measured camera rate %3.2f fps and %3.2f fps", framesPerSecond0, framesPerSecond1);
+        EXPECT_GE(framesPerSecond0, kMinimumFramesPerSecond);
+        EXPECT_GE(framesPerSecond1, kMinimumFramesPerSecond);
+
+        // Shutdown one client
+        frameHandler0->shutdown();
+
+        // Read frame counters again
+        frameHandler0->getFramesCounters(&framesReceived0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceived1, nullptr);
+
+        // Wait a bit again
+        sleep(5);
+        unsigned framesReceivedAfterStop0 = 0, framesReceivedAfterStop1 = 0;
+        frameHandler0->getFramesCounters(&framesReceivedAfterStop0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceivedAfterStop1, nullptr);
+        EXPECT_EQ(framesReceived0, framesReceivedAfterStop0);
+        EXPECT_LT(framesReceived1, framesReceivedAfterStop1);
+
+        // Shutdown another
+        frameHandler1->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCam0);
+        pEnumerator->closeCamera(pCam1);
+    }
+}
+
+
+/*
+ * CameraParameter:
+ * Verify that a client can adjust a camera parameter.
+ */
+TEST_F(EvsHidlTest, CameraParameter) {
+    ALOGI("Starting CameraParameter test");
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Test each reported camera
+    Return<EvsResult> result = EvsResult::OK;
+    for (auto&& cam: cameraInfo) {
+        // Create a camera client
+        sp<IEvsCamera_1_1> pCam =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam, nullptr);
+
+        // Get the parameter list
+        std::vector<CameraParam> cmds;
+        pCam->getParameterList([&cmds](hidl_vec<CameraParam> cmdList) {
+                cmds.reserve(cmdList.size());
+                for (auto &&cmd : cmdList) {
+                    cmds.push_back(cmd);
+                }
+            }
+        );
+
+        if (cmds.size() < 1) {
+            continue;
+        }
+
+        // Set up per-client frame receiver objects which will fire up its own thread
+        sp<FrameHandler> frameHandler = new FrameHandler(pCam, cam,
+                                                         nullptr,
+                                                         FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandler, nullptr);
+
+        // Start the camera's video stream
+        bool startResult = frameHandler->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Ensure the stream starts
+        frameHandler->waitForFrameCount(1);
+
+        result = pCam->setMaster();
+        ASSERT_EQ(EvsResult::OK, result);
+
+        for (auto &cmd : cmds) {
+            // Get a valid parameter value range
+            int32_t minVal, maxVal, step;
+            pCam->getIntParameterRange(
+                cmd,
+                [&minVal, &maxVal, &step](int32_t val0, int32_t val1, int32_t val2) {
+                    minVal = val0;
+                    maxVal = val1;
+                    step   = val2;
+                }
+            );
+
+            EvsResult result = EvsResult::OK;
+            if (cmd == CameraParam::ABSOLUTE_FOCUS) {
+                // Try to turn off auto-focus
+                int32_t val1 = 0;
+                pCam->getIntParameter(CameraParam::AUTO_FOCUS,
+                                   [&result, &val1](auto status, auto value) {
+                                       result = status;
+                                       if (status == EvsResult::OK) {
+                                          val1 = value;
+                                       }
+                                   });
+                if (val1 != 0) {
+                    pCam->setIntParameter(CameraParam::AUTO_FOCUS, 0,
+                                       [&result, &val1](auto status, auto effectiveValue) {
+                                           result = status;
+                                           val1 = effectiveValue;
+                                       });
+                    ASSERT_EQ(EvsResult::OK, result);
+                    ASSERT_EQ(val1, 0);
+                }
+            }
+
+            // Try to program a parameter with a random value [minVal, maxVal]
+            int32_t val0 = minVal + (std::rand() % (maxVal - minVal));
+            int32_t val1 = 0;
+
+            // Rounding down
+            val0 = val0 - (val0 % step);
+            pCam->setIntParameter(cmd, val0,
+                               [&result, &val1](auto status, auto effectiveValue) {
+                                   result = status;
+                                   val1 = effectiveValue;
+                               });
+
+            ASSERT_EQ(EvsResult::OK, result);
+
+            pCam->getIntParameter(cmd,
+                               [&result, &val1](auto status, auto value) {
+                                   result = status;
+                                   if (status == EvsResult::OK) {
+                                      val1 = value;
+                                   }
+                               });
+            ASSERT_EQ(EvsResult::OK, result);
+            ASSERT_EQ(val0, val1) << "Values are not matched.";
+        }
+
+        result = pCam->unsetMaster();
+        ASSERT_EQ(EvsResult::OK, result);
+
+        // Shutdown
+        frameHandler->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCam);
+    }
+}
+
+
+/*
+ * CameraMasterRelease
+ * Verify that non-master client gets notified when the master client either
+ * terminates or releases a role.
+ */
+TEST_F(EvsHidlTest, CameraMasterRelease) {
+    ALOGI("Starting CameraMasterRelease test");
+
+    if (mIsHwModule) {
+        // This test is not for HW module implementation.
+        return;
+    }
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        // Create two camera clients.
+        sp<IEvsCamera_1_1> pCamMaster =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCamMaster, nullptr);
+        sp<IEvsCamera_1_1> pCamNonMaster =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCamNonMaster, nullptr);
+
+        // Set up per-client frame receiver objects which will fire up its own thread
+        sp<FrameHandler> frameHandlerMaster =
+            new FrameHandler(pCamMaster, cam,
+                             nullptr,
+                             FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandlerMaster, nullptr);
+        sp<FrameHandler> frameHandlerNonMaster =
+            new FrameHandler(pCamNonMaster, cam,
+                             nullptr,
+                             FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandlerNonMaster, nullptr);
+
+        // Set one client as the master
+        EvsResult result = pCamMaster->setMaster();
+        ASSERT_TRUE(result == EvsResult::OK);
+
+        // Try to set another client as the master.
+        result = pCamNonMaster->setMaster();
+        ASSERT_TRUE(result == EvsResult::OWNERSHIP_LOST);
+
+        // Start the camera's video stream via a master client.
+        bool startResult = frameHandlerMaster->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Ensure the stream starts
+        frameHandlerMaster->waitForFrameCount(1);
+
+        // Start the camera's video stream via another client
+        startResult = frameHandlerNonMaster->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Ensure the stream starts
+        frameHandlerNonMaster->waitForFrameCount(1);
+
+        // Non-master client expects to receive a master role relesed
+        // notification.
+        EvsEvent aNotification = {};
+
+        // Release a master role.
+        pCamMaster->unsetMaster();
+
+        // Verify a change notification.
+        frameHandlerNonMaster->waitForEvent(EvsEventType::MASTER_RELEASED, aNotification);
+        ASSERT_EQ(EvsEventType::MASTER_RELEASED,
+                  static_cast<EvsEventType>(aNotification.aType));
+
+        // Non-master becomes a master.
+        result = pCamNonMaster->setMaster();
+        ASSERT_TRUE(result == EvsResult::OK);
+
+        // Previous master client fails to become a master.
+        result = pCamMaster->setMaster();
+        ASSERT_TRUE(result == EvsResult::OWNERSHIP_LOST);
+
+        // Closing current master client.
+        frameHandlerNonMaster->shutdown();
+
+        // Verify a change notification.
+        frameHandlerMaster->waitForEvent(EvsEventType::MASTER_RELEASED, aNotification);
+        ASSERT_EQ(EvsEventType::MASTER_RELEASED,
+                  static_cast<EvsEventType>(aNotification.aType));
+
+        // Closing another stream.
+        frameHandlerMaster->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCamMaster);
+        pEnumerator->closeCamera(pCamNonMaster);
+    }
+
+
+}
+
+
+/*
+ * MultiCameraParameter:
+ * Verify that master and non-master clients behave as expected when they try to adjust
+ * camera parameters.
+ */
+TEST_F(EvsHidlTest, MultiCameraParameter) {
+    ALOGI("Starting MultiCameraParameter test");
+
+    if (mIsHwModule) {
+        // This test is not for HW module implementation.
+        return;
+    }
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        // Create two camera clients.
+        sp<IEvsCamera_1_1> pCamMaster =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCamMaster, nullptr);
+        sp<IEvsCamera_1_1> pCamNonMaster =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCamNonMaster, nullptr);
+
+        // Get the parameter list
+        std::vector<CameraParam> camMasterCmds, camNonMasterCmds;
+        pCamMaster->getParameterList([&camMasterCmds](hidl_vec<CameraParam> cmdList) {
+                camMasterCmds.reserve(cmdList.size());
+                for (auto &&cmd : cmdList) {
+                    camMasterCmds.push_back(cmd);
+                }
+            }
+        );
+
+        pCamNonMaster->getParameterList([&camNonMasterCmds](hidl_vec<CameraParam> cmdList) {
+                camNonMasterCmds.reserve(cmdList.size());
+                for (auto &&cmd : cmdList) {
+                    camNonMasterCmds.push_back(cmd);
+                }
+            }
+        );
+
+        if (camMasterCmds.size() < 1 ||
+            camNonMasterCmds.size() < 1) {
+            // Skip a camera device if it does not support any parameter.
+            continue;
+        }
+
+        // Set up per-client frame receiver objects which will fire up its own thread
+        sp<FrameHandler> frameHandlerMaster =
+            new FrameHandler(pCamMaster, cam,
+                             nullptr,
+                             FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandlerMaster, nullptr);
+        sp<FrameHandler> frameHandlerNonMaster =
+            new FrameHandler(pCamNonMaster, cam,
+                             nullptr,
+                             FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandlerNonMaster, nullptr);
+
+        // Set one client as the master
+        EvsResult result = pCamMaster->setMaster();
+        ASSERT_EQ(EvsResult::OK, result);
+
+        // Try to set another client as the master.
+        result = pCamNonMaster->setMaster();
+        ASSERT_EQ(EvsResult::OWNERSHIP_LOST, result);
+
+        // Start the camera's video stream via a master client.
+        bool startResult = frameHandlerMaster->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Ensure the stream starts
+        frameHandlerMaster->waitForFrameCount(1);
+
+        // Start the camera's video stream via another client
+        startResult = frameHandlerNonMaster->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Ensure the stream starts
+        frameHandlerNonMaster->waitForFrameCount(1);
+
+        int32_t val0 = 0;
+        int32_t val1 = 0;
+        for (auto &cmd : camMasterCmds) {
+            // Get a valid parameter value range
+            int32_t minVal, maxVal, step;
+            pCamMaster->getIntParameterRange(
+                cmd,
+                [&minVal, &maxVal, &step](int32_t val0, int32_t val1, int32_t val2) {
+                    minVal = val0;
+                    maxVal = val1;
+                    step   = val2;
+                }
+            );
+
+            EvsResult result = EvsResult::OK;
+            if (cmd == CameraParam::ABSOLUTE_FOCUS) {
+                // Try to turn off auto-focus
+                int32_t val1 = 1;
+                pCamMaster->setIntParameter(CameraParam::AUTO_FOCUS, 0,
+                                   [&result, &val1](auto status, auto effectiveValue) {
+                                       result = status;
+                                       val1 = effectiveValue;
+                                   });
+                ASSERT_EQ(EvsResult::OK, result);
+                ASSERT_EQ(val1, 0);
+            }
+
+            // Try to program a parameter
+            val0 = minVal + (std::rand() % (maxVal - minVal));
+
+            // Rounding down
+            val0 = val0 - (val0 % step);
+            pCamMaster->setIntParameter(cmd, val0,
+                                     [&result, &val1](auto status, auto effectiveValue) {
+                                         result = status;
+                                         val1 = effectiveValue;
+                                     });
+            ASSERT_EQ(EvsResult::OK, result);
+
+            // Wait a moment
+            sleep(1);
+
+            // Non-master client expects to receive a parameter change notification
+            // whenever a master client adjusts it.
+            EvsEvent aNotification = {};
+
+            pCamMaster->getIntParameter(cmd,
+                                     [&result, &val1](auto status, auto value) {
+                                         result = status;
+                                         if (status == EvsResult::OK) {
+                                            val1 = value;
+                                         }
+                                     });
+            ASSERT_EQ(EvsResult::OK, result);
+            ASSERT_EQ(val0, val1) << "Values are not matched.";
+
+            // Verify a change notification
+            frameHandlerNonMaster->waitForEvent(EvsEventType::PARAMETER_CHANGED, aNotification);
+            ASSERT_EQ(EvsEventType::PARAMETER_CHANGED,
+                      static_cast<EvsEventType>(aNotification.aType));
+            ASSERT_EQ(cmd,
+                      static_cast<CameraParam>(aNotification.payload[0]));
+            ASSERT_EQ(val1,
+                      static_cast<int32_t>(aNotification.payload[1]));
+        }
+
+        // Try to adjust a parameter via non-master client
+        pCamNonMaster->setIntParameter(camNonMasterCmds[0], val0,
+                                    [&result, &val1](auto status, auto effectiveValue) {
+                                        result = status;
+                                        val1 = effectiveValue;
+                                    });
+        ASSERT_EQ(EvsResult::INVALID_ARG, result);
+
+        // Non-master client attemps to be a master
+        result = pCamNonMaster->setMaster();
+        ASSERT_EQ(EvsResult::OWNERSHIP_LOST, result);
+
+        // Master client retires from a master role
+        result = pCamMaster->unsetMaster();
+        ASSERT_EQ(EvsResult::OK, result);
+
+        // Try to adjust a parameter after being retired
+        pCamMaster->setIntParameter(camMasterCmds[0], val0,
+                                 [&result, &val1](auto status, auto effectiveValue) {
+                                     result = status;
+                                     val1 = effectiveValue;
+                                 });
+        ASSERT_EQ(EvsResult::INVALID_ARG, result);
+
+        // Non-master client becomes a master
+        result = pCamNonMaster->setMaster();
+        ASSERT_EQ(EvsResult::OK, result);
+
+        // Try to adjust a parameter via new master client
+        for (auto &cmd : camNonMasterCmds) {
+            // Get a valid parameter value range
+            int32_t minVal, maxVal, step;
+            pCamNonMaster->getIntParameterRange(
+                cmd,
+                [&minVal, &maxVal, &step](int32_t val0, int32_t val1, int32_t val2) {
+                    minVal = val0;
+                    maxVal = val1;
+                    step   = val2;
+                }
+            );
+
+            EvsResult result = EvsResult::OK;
+            if (cmd == CameraParam::ABSOLUTE_FOCUS) {
+                // Try to turn off auto-focus
+                int32_t val1 = 1;
+                pCamNonMaster->setIntParameter(CameraParam::AUTO_FOCUS, 0,
+                                   [&result, &val1](auto status, auto effectiveValue) {
+                                       result = status;
+                                       val1 = effectiveValue;
+                                   });
+                ASSERT_EQ(EvsResult::OK, result);
+                ASSERT_EQ(val1, 0);
+            }
+
+            // Try to program a parameter
+            val0 = minVal + (std::rand() % (maxVal - minVal));
+
+            // Rounding down
+            val0 = val0 - (val0 % step);
+            pCamNonMaster->setIntParameter(cmd, val0,
+                                        [&result, &val1](auto status, auto effectiveValue) {
+                                            result = status;
+                                            val1 = effectiveValue;
+                                        });
+            ASSERT_EQ(EvsResult::OK, result);
+
+            // Wait a moment
+            sleep(1);
+
+            // Non-master client expects to receive a parameter change notification
+            // whenever a master client adjusts it.
+            EvsEvent aNotification = {};
+
+            pCamNonMaster->getIntParameter(cmd,
+                                        [&result, &val1](auto status, auto value) {
+                                            result = status;
+                                            if (status == EvsResult::OK) {
+                                               val1 = value;
+                                            }
+                                        });
+            ASSERT_EQ(EvsResult::OK, result);
+            ASSERT_EQ(val0, val1) << "Values are not matched.";
+
+            // Verify a change notification
+            frameHandlerMaster->waitForEvent(EvsEventType::PARAMETER_CHANGED, aNotification);
+            ASSERT_EQ(EvsEventType::PARAMETER_CHANGED,
+                      static_cast<EvsEventType>(aNotification.aType));
+            ASSERT_EQ(cmd,
+                      static_cast<CameraParam>(aNotification.payload[0]));
+            ASSERT_EQ(val1,
+                      static_cast<int32_t>(aNotification.payload[1]));
+        }
+
+        // New master retires from a master role
+        result = pCamNonMaster->unsetMaster();
+        ASSERT_EQ(EvsResult::OK, result);
+
+        // Shutdown
+        frameHandlerMaster->shutdown();
+        frameHandlerNonMaster->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCamMaster);
+        pEnumerator->closeCamera(pCamNonMaster);
+    }
+}
+
+
+/*
+ * HighPriorityCameraClient:
+ * EVS client, which owns the display, is priortized and therefore can take over
+ * a master role from other EVS clients without the display.
+ */
+TEST_F(EvsHidlTest, HighPriorityCameraClient) {
+    ALOGI("Starting HighPriorityCameraClient test");
+
+    if (mIsHwModule) {
+        // This test is not for HW module implementation.
+        return;
+    }
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Request exclusive access to the EVS display
+    sp<IEvsDisplay> pDisplay = pEnumerator->openDisplay();
+    ASSERT_NE(pDisplay, nullptr);
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        // Create two clients
+        sp<IEvsCamera_1_1> pCam0 =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam0, nullptr);
+
+        sp<IEvsCamera_1_1> pCam1 =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam1, nullptr);
+
+        // Get the parameter list; this test will use the first command in both
+        // lists.
+        std::vector<CameraParam> cam0Cmds, cam1Cmds;
+        pCam0->getParameterList([&cam0Cmds](hidl_vec<CameraParam> cmdList) {
+                cam0Cmds.reserve(cmdList.size());
+                for (auto &&cmd : cmdList) {
+                    cam0Cmds.push_back(cmd);
+                }
+            }
+        );
+
+        pCam1->getParameterList([&cam1Cmds](hidl_vec<CameraParam> cmdList) {
+                cam1Cmds.reserve(cmdList.size());
+                for (auto &&cmd : cmdList) {
+                    cam1Cmds.push_back(cmd);
+                }
+            }
+        );
+        if (cam0Cmds.size() < 1 || cam1Cmds.size() < 1) {
+            // Cannot execute this test.
+            return;
+        }
+
+        // Set up a frame receiver object which will fire up its own thread.
+        sp<FrameHandler> frameHandler0 = new FrameHandler(pCam0, cam,
+                                                          pDisplay,
+                                                          FrameHandler::eAutoReturn);
+        sp<FrameHandler> frameHandler1 = new FrameHandler(pCam1, cam,
+                                                          nullptr,
+                                                          FrameHandler::eAutoReturn);
+
+        // Activate the display
+        pDisplay->setDisplayState(DisplayState::VISIBLE_ON_NEXT_FRAME);
+
+        // Start the camera's video stream
+        ASSERT_TRUE(frameHandler0->startStream());
+        ASSERT_TRUE(frameHandler1->startStream());
+
+        // Ensure the stream starts
+        frameHandler0->waitForFrameCount(1);
+        frameHandler1->waitForFrameCount(1);
+
+        // Client 1 becomes a master and programs a parameter.
+        EvsResult result = EvsResult::OK;
+        // Get a valid parameter value range
+        int32_t minVal, maxVal, step;
+        pCam1->getIntParameterRange(
+            cam1Cmds[0],
+            [&minVal, &maxVal, &step](int32_t val0, int32_t val1, int32_t val2) {
+                minVal = val0;
+                maxVal = val1;
+                step   = val2;
+            }
+        );
+
+        if (cam1Cmds[0] == CameraParam::ABSOLUTE_FOCUS) {
+            // Try to turn off auto-focus
+            int32_t val1 = 0;
+            pCam1->getIntParameter(CameraParam::AUTO_FOCUS,
+                               [&result, &val1](auto status, auto value) {
+                                   result = status;
+                                   if (status == EvsResult::OK) {
+                                      val1 = value;
+                                   }
+                               });
+            if (val1 != 0) {
+                pCam1->setIntParameter(CameraParam::AUTO_FOCUS, 0,
+                                   [&result, &val1](auto status, auto effectiveValue) {
+                                       result = status;
+                                       val1 = effectiveValue;
+                                   });
+                ASSERT_EQ(EvsResult::OK, result);
+                ASSERT_EQ(val1, 0);
+            }
+        }
+
+        // Try to program a parameter with a random value [minVal, maxVal]
+        int32_t val0 = minVal + (std::rand() % (maxVal - minVal));
+        int32_t val1 = 0;
+
+        // Rounding down
+        val0 = val0 - (val0 % step);
+
+        result = pCam1->setMaster();
+        ASSERT_EQ(EvsResult::OK, result);
+
+        pCam1->setIntParameter(cam1Cmds[0], val0,
+                            [&result, &val1](auto status, auto effectiveValue) {
+                                result = status;
+                                val1 = effectiveValue;
+                            });
+        ASSERT_EQ(EvsResult::OK, result);
+
+        // Verify a change notification
+        EvsEvent aNotification = {};
+        bool timeout =
+            frameHandler0->waitForEvent(EvsEventType::PARAMETER_CHANGED, aNotification);
+        ASSERT_FALSE(timeout) << "Expected event does not arrive";
+        ASSERT_EQ(static_cast<EvsEventType>(aNotification.aType),
+                  EvsEventType::PARAMETER_CHANGED);
+        ASSERT_EQ(static_cast<CameraParam>(aNotification.payload[0]),
+                  cam1Cmds[0]);
+        ASSERT_EQ(val1,
+                  static_cast<int32_t>(aNotification.payload[1]));
+
+        // Client 0 steals a master role
+        ASSERT_EQ(EvsResult::OK, pCam0->forceMaster(pDisplay));
+
+        frameHandler1->waitForEvent(EvsEventType::MASTER_RELEASED, aNotification);
+        ASSERT_EQ(static_cast<EvsEventType>(aNotification.aType),
+                  EvsEventType::MASTER_RELEASED);
+
+        // Client 0 programs a parameter
+        val0 = minVal + (std::rand() % (maxVal - minVal));
+        val1 = 0;
+
+        // Rounding down
+        val0 = val0 - (val0 % step);
+
+        if (cam0Cmds[0] == CameraParam::ABSOLUTE_FOCUS) {
+            // Try to turn off auto-focus
+            int32_t val1 = 0;
+            pCam0->getIntParameter(CameraParam::AUTO_FOCUS,
+                               [&result, &val1](auto status, auto value) {
+                                   result = status;
+                                   if (status == EvsResult::OK) {
+                                      val1 = value;
+                                   }
+                               });
+            if (val1 != 0) {
+                pCam0->setIntParameter(CameraParam::AUTO_FOCUS, 0,
+                                   [&result, &val1](auto status, auto effectiveValue) {
+                                       result = status;
+                                       val1 = effectiveValue;
+                                   });
+                ASSERT_EQ(EvsResult::OK, result);
+                ASSERT_EQ(val1, 0);
+            }
+        }
+
+        pCam0->setIntParameter(cam0Cmds[0], val0,
+                            [&result, &val1](auto status, auto effectiveValue) {
+                                result = status;
+                                val1 = effectiveValue;
+                            });
+        ASSERT_EQ(EvsResult::OK, result);
+
+        // Verify a change notification
+        timeout =
+            frameHandler1->waitForEvent(EvsEventType::PARAMETER_CHANGED, aNotification);
+        ASSERT_FALSE(timeout) << "Expected event does not arrive";
+        ASSERT_EQ(static_cast<EvsEventType>(aNotification.aType),
+                  EvsEventType::PARAMETER_CHANGED);
+        ASSERT_EQ(static_cast<CameraParam>(aNotification.payload[0]),
+                  cam0Cmds[0]);
+        ASSERT_EQ(val1,
+                  static_cast<int32_t>(aNotification.payload[1]));
+
+        // Turn off the display (yes, before the stream stops -- it should be handled)
+        pDisplay->setDisplayState(DisplayState::NOT_VISIBLE);
+
+        // Shut down the streamer
+        frameHandler0->shutdown();
+        frameHandler1->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCam0);
+        pEnumerator->closeCamera(pCam1);
+    }
+
+    // Explicitly release the display
+    pEnumerator->closeDisplay(pDisplay);
+}
+
+
+/*
+ * CameraUseStreamConfigToDisplay:
+ * End to end test of data flowing from the camera to the display.  Similar to
+ * CameraToDisplayRoundTrip test case but this case retrieves available stream
+ * configurations from EVS and uses one of them to start a video stream.
+ */
+TEST_F(EvsHidlTest, CameraUseStreamConfigToDisplay) {
+    ALOGI("Starting CameraUseStreamConfigToDisplay test");
+
+    // Get the camera list
+    loadCameraList();
+
+    // Request exclusive access to the EVS display
+    sp<IEvsDisplay> pDisplay = pEnumerator->openDisplay();
+    ASSERT_NE(pDisplay, nullptr);
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        // choose a configuration that has a frame rate faster than minReqFps.
+        Stream targetCfg = {};
+        const int32_t minReqFps = 15;
+        int32_t maxArea = 0;
+        camera_metadata_entry_t streamCfgs;
+        bool foundCfg = false;
+        if (!find_camera_metadata_entry(
+                 reinterpret_cast<camera_metadata_t *>(cam.metadata.data()),
+                 ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS,
+                 &streamCfgs)) {
+            // Stream configurations are found in metadata
+            RawStreamConfig *ptr = reinterpret_cast<RawStreamConfig *>(streamCfgs.data.i32);
+            for (unsigned idx = 0; idx < streamCfgs.count; idx += kStreamCfgSz) {
+                if (ptr->direction == ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT &&
+                    ptr->format == HAL_PIXEL_FORMAT_RGBA_8888) {
+
+                    if (ptr->width * ptr->height > maxArea &&
+                        ptr->framerate >= minReqFps) {
+                        targetCfg.width = ptr->width;
+                        targetCfg.height = ptr->height;
+
+                        maxArea = ptr->width * ptr->height;
+                        foundCfg = true;
+                    }
+                }
+                ++ptr;
+            }
+        }
+        targetCfg.format =
+            static_cast<PixelFormat>(HAL_PIXEL_FORMAT_RGBA_8888);
+
+        if (!foundCfg) {
+            // Current EVS camera does not provide stream configurations in the
+            // metadata.
+            continue;
+        }
+
+        sp<IEvsCamera_1_1> pCam =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, targetCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam, nullptr);
+
+        // Set up a frame receiver object which will fire up its own thread.
+        sp<FrameHandler> frameHandler = new FrameHandler(pCam, cam,
+                                                         pDisplay,
+                                                         FrameHandler::eAutoReturn);
+
+
+        // Activate the display
+        pDisplay->setDisplayState(DisplayState::VISIBLE_ON_NEXT_FRAME);
+
+        // Start the camera's video stream
+        bool startResult = frameHandler->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Wait a while to let the data flow
+        static const int kSecondsToWait = 5;
+        const int streamTimeMs = kSecondsToWait * kSecondsToMilliseconds -
+                                 kMaxStreamStartMilliseconds;
+        const unsigned minimumFramesExpected = streamTimeMs * kMinimumFramesPerSecond /
+                                               kSecondsToMilliseconds;
+        sleep(kSecondsToWait);
+        unsigned framesReceived = 0;
+        unsigned framesDisplayed = 0;
+        frameHandler->getFramesCounters(&framesReceived, &framesDisplayed);
+        EXPECT_EQ(framesReceived, framesDisplayed);
+        EXPECT_GE(framesDisplayed, minimumFramesExpected);
+
+        // Turn off the display (yes, before the stream stops -- it should be handled)
+        pDisplay->setDisplayState(DisplayState::NOT_VISIBLE);
+
+        // Shut down the streamer
+        frameHandler->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCam);
+    }
+
+    // Explicitly release the display
+    pEnumerator->closeDisplay(pDisplay);
+}
+
+
+/*
+ * MultiCameraStreamUseConfig:
+ * Verify that each client can start and stop video streams on the same
+ * underlying camera with same configuration.
+ */
+TEST_F(EvsHidlTest, MultiCameraStreamUseConfig) {
+    ALOGI("Starting MultiCameraStream test");
+
+    if (mIsHwModule) {
+        // This test is not for HW module implementation.
+        return;
+    }
+
+    // Get the camera list
+    loadCameraList();
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        // choose a configuration that has a frame rate faster than minReqFps.
+        Stream targetCfg = {};
+        const int32_t minReqFps = 15;
+        int32_t maxArea = 0;
+        camera_metadata_entry_t streamCfgs;
+        bool foundCfg = false;
+        if (!find_camera_metadata_entry(
+                 reinterpret_cast<camera_metadata_t *>(cam.metadata.data()),
+                 ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS,
+                 &streamCfgs)) {
+            // Stream configurations are found in metadata
+            RawStreamConfig *ptr = reinterpret_cast<RawStreamConfig *>(streamCfgs.data.i32);
+            for (unsigned idx = 0; idx < streamCfgs.count; idx += kStreamCfgSz) {
+                if (ptr->direction == ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT &&
+                    ptr->format == HAL_PIXEL_FORMAT_RGBA_8888) {
+
+                    if (ptr->width * ptr->height > maxArea &&
+                        ptr->framerate >= minReqFps) {
+                        targetCfg.width = ptr->width;
+                        targetCfg.height = ptr->height;
+
+                        maxArea = ptr->width * ptr->height;
+                        foundCfg = true;
+                    }
+                }
+                ++ptr;
+            }
+        }
+        targetCfg.format =
+            static_cast<PixelFormat>(HAL_PIXEL_FORMAT_RGBA_8888);
+
+        if (!foundCfg) {
+            ALOGI("Device %s does not provide a list of supported stream configurations, skipped",
+                  cam.v1.cameraId.c_str());
+
+            continue;
+        }
+
+        // Create the first camera client with a selected stream configuration.
+        sp<IEvsCamera_1_1> pCam0 =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, targetCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam0, nullptr);
+
+        // Try to create the second camera client with different stream
+        // configuration.
+        int32_t id = targetCfg.id;
+        targetCfg.id += 1;  // EVS manager sees only the stream id.
+        sp<IEvsCamera_1_1> pCam1 =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, targetCfg))
+            .withDefault(nullptr);
+        ASSERT_EQ(pCam1, nullptr);
+
+        // Try again with same stream configuration.
+        targetCfg.id = id;
+        pCam1 =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, targetCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam1, nullptr);
+
+        // Set up per-client frame receiver objects which will fire up its own thread
+        sp<FrameHandler> frameHandler0 = new FrameHandler(pCam0, cam,
+                                                          nullptr,
+                                                          FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandler0, nullptr);
+
+        sp<FrameHandler> frameHandler1 = new FrameHandler(pCam1, cam,
+                                                          nullptr,
+                                                          FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandler1, nullptr);
+
+        // Start the camera's video stream via client 0
+        bool startResult = false;
+        startResult = frameHandler0->startStream() &&
+                      frameHandler1->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Ensure the stream starts
+        frameHandler0->waitForFrameCount(1);
+        frameHandler1->waitForFrameCount(1);
+
+        nsecs_t firstFrame = systemTime(SYSTEM_TIME_MONOTONIC);
+
+        // Wait a bit, then ensure both clients get at least the required minimum number of frames
+        sleep(5);
+        nsecs_t end = systemTime(SYSTEM_TIME_MONOTONIC);
+        unsigned framesReceived0 = 0, framesReceived1 = 0;
+        frameHandler0->getFramesCounters(&framesReceived0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceived1, nullptr);
+        framesReceived0 = framesReceived0 - 1;    // Back out the first frame we already waited for
+        framesReceived1 = framesReceived1 - 1;    // Back out the first frame we already waited for
+        nsecs_t runTime = end - firstFrame;
+        float framesPerSecond0 = framesReceived0 / (runTime * kNanoToSeconds);
+        float framesPerSecond1 = framesReceived1 / (runTime * kNanoToSeconds);
+        ALOGI("Measured camera rate %3.2f fps and %3.2f fps", framesPerSecond0, framesPerSecond1);
+        EXPECT_GE(framesPerSecond0, kMinimumFramesPerSecond);
+        EXPECT_GE(framesPerSecond1, kMinimumFramesPerSecond);
+
+        // Shutdown one client
+        frameHandler0->shutdown();
+
+        // Read frame counters again
+        frameHandler0->getFramesCounters(&framesReceived0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceived1, nullptr);
+
+        // Wait a bit again
+        sleep(5);
+        unsigned framesReceivedAfterStop0 = 0, framesReceivedAfterStop1 = 0;
+        frameHandler0->getFramesCounters(&framesReceivedAfterStop0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceivedAfterStop1, nullptr);
+        EXPECT_EQ(framesReceived0, framesReceivedAfterStop0);
+        EXPECT_LT(framesReceived1, framesReceivedAfterStop1);
+
+        // Shutdown another
+        frameHandler1->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCam0);
+        pEnumerator->closeCamera(pCam1);
+    }
+}
+
+
+int main(int argc, char** argv) {
+    ::testing::AddGlobalTestEnvironment(EvsHidlEnvironment::Instance());
+    ::testing::InitGoogleTest(&argc, argv);
+    EvsHidlEnvironment::Instance()->init(&argc, argv);
+    int status = RUN_ALL_TESTS();
+    ALOGI("Test result = %d", status);
+    return status;
+}
diff --git a/automotive/evs/common/utils/default/Android.bp b/automotive/evs/common/utils/default/Android.bp
new file mode 100644
index 0000000..7734f5c
--- /dev/null
+++ b/automotive/evs/common/utils/default/Android.bp
@@ -0,0 +1,31 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_static {
+    name: "android.hardware.automotive.evs@common-default-lib",
+    vendor_available: true,
+    relative_install_path: "hw",
+    cflags: [
+        "-O0",
+        "-g",
+    ],
+    srcs: [
+        "FormatConvert.cpp"
+    ],
+    export_include_dirs: ["include"],
+    shared_libs: [
+    ],
+}
diff --git a/automotive/evs/1.0/vts/functional/FormatConvert.cpp b/automotive/evs/common/utils/default/FormatConvert.cpp
similarity index 74%
rename from automotive/evs/1.0/vts/functional/FormatConvert.cpp
rename to automotive/evs/common/utils/default/FormatConvert.cpp
index 3d82d32..d4c7da0 100644
--- a/automotive/evs/1.0/vts/functional/FormatConvert.cpp
+++ b/automotive/evs/common/utils/default/FormatConvert.cpp
@@ -18,10 +18,15 @@
 
 #include "FormatConvert.h"
 
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace evs {
+namespace common {
 
 // Round up to the nearest multiple of the given alignment value
 template<unsigned alignment>
-int align(int value) {
+int Utils::align(int value) {
     static_assert((alignment && !(alignment & (alignment - 1))),
                   "alignment must be a power of 2");
 
@@ -31,15 +36,17 @@
 
 
 // Limit the given value to the provided range.  :)
-static inline float clamp(float v, float min, float max) {
+inline float Utils::clamp(float v, float min, float max) {
     if (v < min) return min;
     if (v > max) return max;
     return v;
 }
 
 
-static uint32_t yuvToRgbx(const unsigned char Y, const unsigned char Uin, const unsigned char Vin,
-                          bool bgrxFormat = false) {
+uint32_t Utils::yuvToRgbx(const unsigned char Y,
+                          const unsigned char Uin,
+                          const unsigned char Vin,
+                          bool bgrxFormat) {
     // Don't use this if you want to see the best performance.  :)
     // Better to do this in a pixel shader if we really have to, but on actual
     // embedded hardware we expect to be able to texture directly from the YUV data
@@ -67,10 +74,10 @@
 }
 
 
-void copyNV21toRGB32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels,
-                     bool bgrxFormat)
+void Utils::copyNV21toRGB32(unsigned width, unsigned height,
+                            uint8_t* src,
+                            uint32_t* dst, unsigned dstStridePixels,
+                            bool bgrxFormat)
 {
     // The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
     // U/V array.  It assumes an even width and height for the overall image, and a horizontal
@@ -99,10 +106,10 @@
 }
 
 
-void copyYV12toRGB32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels,
-                     bool bgrxFormat)
+void Utils::copyYV12toRGB32(unsigned width, unsigned height,
+                            uint8_t* src,
+                            uint32_t* dst, unsigned dstStridePixels,
+                            bool bgrxFormat)
 {
     // The YV12 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 U array, followed
     // by another 1/2 x 1/2 V array.  It assumes an even width and height for the overall image,
@@ -134,10 +141,10 @@
 }
 
 
-void copyYUYVtoRGB32(unsigned width, unsigned height,
-                     uint8_t* src, unsigned srcStridePixels,
-                     uint32_t* dst, unsigned dstStridePixels,
-                     bool bgrxFormat)
+void Utils::copyYUYVtoRGB32(unsigned width, unsigned height,
+                            uint8_t* src, unsigned srcStridePixels,
+                            uint32_t* dst, unsigned dstStridePixels,
+                            bool bgrxFormat)
 {
     uint32_t* srcWords = (uint32_t*)src;
 
@@ -167,34 +174,34 @@
 }
 
 
-void copyNV21toBGR32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels)
+void Utils::copyNV21toBGR32(unsigned width, unsigned height,
+                            uint8_t* src,
+                            uint32_t* dst, unsigned dstStridePixels)
 {
     return copyNV21toRGB32(width, height, src, dst, dstStridePixels, true);
 }
 
 
-void copyYV12toBGR32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels)
+void Utils::copyYV12toBGR32(unsigned width, unsigned height,
+                            uint8_t* src,
+                            uint32_t* dst, unsigned dstStridePixels)
 {
     return copyYV12toRGB32(width, height, src, dst, dstStridePixels, true);
 }
 
 
-void copyYUYVtoBGR32(unsigned width, unsigned height,
-                     uint8_t* src, unsigned srcStridePixels,
-                     uint32_t* dst, unsigned dstStridePixels)
+void Utils::copyYUYVtoBGR32(unsigned width, unsigned height,
+                            uint8_t* src, unsigned srcStridePixels,
+                            uint32_t* dst, unsigned dstStridePixels)
 {
     return copyYUYVtoRGB32(width, height, src, srcStridePixels, dst, dstStridePixels, true);
 }
 
 
-void copyMatchedInterleavedFormats(unsigned width, unsigned height,
-                                   void* src, unsigned srcStridePixels,
-                                   void* dst, unsigned dstStridePixels,
-                                   unsigned pixelSize) {
+void Utils::copyMatchedInterleavedFormats(unsigned width, unsigned height,
+                                          void* src, unsigned srcStridePixels,
+                                          void* dst, unsigned dstStridePixels,
+                                          unsigned pixelSize) {
     for (unsigned row = 0; row < height; row++) {
         // Copy the entire row of pixel data
         memcpy(dst, src, width * pixelSize);
@@ -204,3 +211,10 @@
         dst = (uint8_t*)dst + dstStridePixels * pixelSize;
     }
 }
+
+} // namespace common
+} // namespace evs
+} // namespace automotive
+} // namespace hardware
+} // namespace android
+
diff --git a/automotive/evs/common/utils/default/include/FormatConvert.h b/automotive/evs/common/utils/default/include/FormatConvert.h
new file mode 100644
index 0000000..2bb8955
--- /dev/null
+++ b/automotive/evs/common/utils/default/include/FormatConvert.h
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef EVS_VTS_FORMATCONVERT_H
+#define EVS_VTS_FORMATCONVERT_H
+
+#include <queue>
+#include <stdint.h>
+
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace evs {
+namespace common {
+
+class Utils {
+public:
+    // Given an image buffer in NV21 format (HAL_PIXEL_FORMAT_YCRCB_420_SP), output 32bit RGBx/BGRx
+    // values.  The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
+    // U/V array.  It assumes an even width and height for the overall image, and a horizontal
+    // stride that is an even multiple of 16 bytes for both the Y and UV arrays.
+    static void copyNV21toRGB32(unsigned width, unsigned height,
+                                uint8_t* src,
+                                uint32_t* dst, unsigned dstStridePixels,
+                                bool bgrxFormat = false);
+
+    static void copyNV21toBGR32(unsigned width, unsigned height,
+                                uint8_t* src,
+                                uint32_t* dst, unsigned dstStridePixels);
+
+
+    // Given an image buffer in YV12 format (HAL_PIXEL_FORMAT_YV12), output 32bit RGBx/BGRx values.
+    // The YV12 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 U array, followed
+    // by another 1/2 x 1/2 V array.  It assumes an even width and height for the overall image,
+    // and a horizontal stride that is an even multiple of 16 bytes for each of the Y, U,
+    // and V arrays.
+    static void copyYV12toRGB32(unsigned width, unsigned height,
+                                uint8_t* src,
+                                uint32_t* dst, unsigned dstStridePixels,
+                                bool bgrxFormat = false);
+
+    static void copyYV12toBGR32(unsigned width, unsigned height,
+                                uint8_t* src,
+                                uint32_t* dst, unsigned dstStridePixels);
+
+    // Given an image buffer in YUYV format (HAL_PIXEL_FORMAT_YCBCR_422_I), output 32bit RGBx/BGRx
+    // values.  The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
+    // U/V array.  It assumes an even width and height for the overall image, and a horizontal
+    // stride that is an even multiple of 16 bytes for both the Y and UV arrays.
+    static void copyYUYVtoRGB32(unsigned width, unsigned height,
+                                uint8_t* src, unsigned srcStrideBytes,
+                                uint32_t* dst, unsigned dstStrideBytes,
+                                bool bgrxFormat = false);
+
+    static void copyYUYVtoBGR32(unsigned width, unsigned height,
+                                uint8_t* src, unsigned srcStrideBytes,
+                                uint32_t* dst, unsigned dstStrideBytes);
+
+
+    // Given an simple rectangular image buffer with an integer number of bytes per pixel,
+    // copy the pixel values into a new rectangular buffer (potentially with a different stride).
+    // This is typically used to copy RGBx data into an RGBx output buffer.
+    static void copyMatchedInterleavedFormats(unsigned width, unsigned height,
+                                              void* src, unsigned srcStridePixels,
+                                              void* dst, unsigned dstStridePixels,
+                                              unsigned pixelSize);
+
+private:
+    template<unsigned alignment>
+    static int align(int value);
+
+    static inline float clamp(float v, float min, float max);
+    static uint32_t yuvToRgbx(const unsigned char Y,
+                              const unsigned char Uin,
+                              const unsigned char Vin,
+                              bool bgrxFormat = false);
+};
+
+} // namespace common
+} // namespace evs
+} // namespace automotive
+} // namespace hardware
+} // namespace android
+
+#endif // EVS_VTS_FORMATCONVERT_H
diff --git a/automotive/vehicle/2.0/default/common/include/vhal_v2_0/VehicleConnector.h b/automotive/vehicle/2.0/default/common/include/vhal_v2_0/VehicleConnector.h
new file mode 100644
index 0000000..56ecd67
--- /dev/null
+++ b/automotive/vehicle/2.0/default/common/include/vhal_v2_0/VehicleConnector.h
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_automotive_vehicle_V2_0_VehicleConnector_H_
+#define android_hardware_automotive_vehicle_V2_0_VehicleConnector_H_
+
+#include <vector>
+
+#include <android/hardware/automotive/vehicle/2.0/types.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+
+/**
+ *  This file defines the interface of client/server pair for HAL-vehicle
+ *  communication. Vehicle HAL may use this interface to talk to the vehicle
+ *  regardless of the underlying communication channels.
+ */
+
+/**
+ *  Vehicle HAL talks to the vehicle through a client, instead of accessing
+ *  the car bus directly, to give us more flexibility on the implementation.
+ *  Android OS do not need direct access to the vehicle, and the communication
+ *  channel is also customizable.
+ *
+ *  Client lives on the Android (HAL) side to talk to the vehicle
+ */
+class IVehicleClient {
+  public:
+    IVehicleClient() = default;
+
+    IVehicleClient(const IVehicleClient&) = delete;
+
+    IVehicleClient& operator=(const IVehicleClient&) = delete;
+
+    IVehicleClient(IVehicleClient&&) = default;
+
+    virtual ~IVehicleClient() = default;
+
+    // Get configuration of all properties from server
+    virtual std::vector<VehiclePropConfig> getAllPropertyConfig() const = 0;
+
+    // Send the set property request to server
+    virtual StatusCode setProperty(const VehiclePropValue& value) = 0;
+
+    // Receive a new property value from server
+    virtual void onPropertyValue(const VehiclePropValue& value) = 0;
+};
+
+/**
+ *  Server lives on the vehicle side to talk to Android HAL
+ */
+class IVehicleServer {
+  public:
+    IVehicleServer() = default;
+
+    IVehicleServer(const IVehicleServer&) = delete;
+
+    IVehicleServer& operator=(const IVehicleServer&) = delete;
+
+    IVehicleServer(IVehicleServer&&) = default;
+
+    virtual ~IVehicleServer() = default;
+
+    // Receive the get property configuration request from HAL.
+    // Return a list of all property config
+    virtual std::vector<VehiclePropConfig> onGetAllPropertyConfig() const = 0;
+
+    // Receive the set property request from HAL.
+    // Process the setting and return the status code
+    virtual StatusCode onSetProperty(const VehiclePropValue& value) = 0;
+
+    // Receive a new property value from car (via direct connection to the car bus or the emulator)
+    // and forward the value to HAL
+    virtual void onPropertyValueFromCar(const VehiclePropValue& value) = 0;
+};
+
+/**
+ *  If Android has direct access to the vehicle, then the client and
+ *  the server may act in passthrough mode to avoid extra IPC
+ *
+ *  Template is used here for spliting the logic of operating Android objects (VehicleClientType),
+ *  talking to cars (VehicleServerType) and the commucation between client and server (passthrough
+ *  mode in this case), so that we can easily combine different parts together without duplicating
+ *  codes (for example, in Google VHAL, the server talks to the fake car in the same way no matter
+ *  if it is on top of passthrough connector or VSOCK or any other communication channels between
+ *  client and server)
+ *
+ *  The alternative may be factoring the common logic of every operations for both client and
+ *  server. Which is not always the case. Making sure different non-template connectors calling
+ *  the same method is hard, especially when the engineer maintaining the code may not be aware
+ *  of it when making changes. Template is a clean and easy way to solve this problem in this
+ *  case.
+ */
+template <typename VehicleClientType, typename VehicleServerType>
+class IPassThroughConnector : public VehicleClientType, public VehicleServerType {
+    static_assert(std::is_base_of_v<IVehicleClient, VehicleClientType>);
+    static_assert(std::is_base_of_v<IVehicleServer, VehicleServerType>);
+
+  public:
+    std::vector<VehiclePropConfig> getAllPropertyConfig() const override {
+        return this->onGetAllPropertyConfig();
+    }
+
+    StatusCode setProperty(const VehiclePropValue& value) override {
+        return this->onSetProperty(value);
+    }
+
+    void onPropertyValueFromCar(const VehiclePropValue& value) override {
+        return this->onPropertyValue(value);
+    }
+
+    // To be implemented:
+    // virtual std::vector<VehiclePropConfig> onGetAllPropertyConfig() = 0;
+    // virtual void onPropertyValue(const VehiclePropValue& value) = 0;
+    // virtual StatusCode onSetProperty(const VehiclePropValue& value) = 0;
+};
+
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_automotive_vehicle_V2_0_VehicleConnector_H_
diff --git a/automotive/vehicle/2.0/default/common/src/VehiclePropertyStore.cpp b/automotive/vehicle/2.0/default/common/src/VehiclePropertyStore.cpp
index 94ace45..24b777c 100644
--- a/automotive/vehicle/2.0/default/common/src/VehiclePropertyStore.cpp
+++ b/automotive/vehicle/2.0/default/common/src/VehiclePropertyStore.cpp
@@ -50,12 +50,18 @@
     VehiclePropValue* valueToUpdate = const_cast<VehiclePropValue*>(getValueOrNullLocked(recId));
     if (valueToUpdate == nullptr) {
         mPropertyValues.insert({ recId, propValue });
-    } else {
-        valueToUpdate->timestamp = propValue.timestamp;
-        valueToUpdate->value = propValue.value;
-        if (updateStatus) {
-            valueToUpdate->status = propValue.status;
-        }
+        return true;
+    }
+
+    // propValue is outdated and drops it.
+    if (valueToUpdate->timestamp > propValue.timestamp) {
+        return false;
+    }
+    // update the propertyValue.
+    valueToUpdate->timestamp = propValue.timestamp;
+    valueToUpdate->value = propValue.value;
+    if (updateStatus) {
+        valueToUpdate->status = propValue.status;
     }
     return true;
 }
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
index 8a89322..f41b33c 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
@@ -85,6 +85,34 @@
     0x0666 | VehiclePropertyGroup::VENDOR | VehicleArea::GLOBAL | VehiclePropertyType::MIXED;
 
 /**
+ * This property is used for test purpose to set properties' value from vehicle.
+ * For example: Mocking hard button press triggering a HVAC fan speed change.
+ * Android set kSetPropertyFromVehcileForTest with an array of integer {HVAC_FAN_SPEED, value of
+ * fan speed} and a long value indicates the timestamp of the events .
+ * It only works with integer type properties.
+ */
+const int32_t kSetIntPropertyFromVehcileForTest =
+        0x1112 | VehiclePropertyGroup::VENDOR | VehicleArea::GLOBAL | VehiclePropertyType::MIXED;
+/**
+ * This property is used for test purpose to set properties' value from vehicle.
+ * It only works with float type properties.
+ */
+const int32_t kSetFloatPropertyFromVehcileForTest =
+        0x1113 | VehiclePropertyGroup::VENDOR | VehicleArea::GLOBAL | VehiclePropertyType::MIXED;
+/**
+ * This property is used for test purpose to set properties' value from vehicle.
+ * It only works with boolean type properties.
+ */
+const int32_t kSetBooleanPropertyFromVehcileForTest =
+        0x1114 | VehiclePropertyGroup::VENDOR | VehicleArea::GLOBAL | VehiclePropertyType::MIXED;
+
+/**
+ * This property is used for test purpose. End to end tests use this property to test set and get
+ * method for MIXED type properties.
+ */
+const int32_t kMixedTypePropertyForTest =
+        0x1111 | VehiclePropertyGroup::VENDOR | VehicleArea::GLOBAL | VehiclePropertyType::MIXED;
+/**
  * FakeDataCommand enum defines the supported command type for kGenerateFakeDataControllingProperty.
  * All those commands can be send independently with each other. And each will override the one sent
  * previously.
@@ -167,7 +195,6 @@
                          .prop = toInt(VehicleProperty::INFO_FUEL_CAPACITY),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::STATIC,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.floatValues = {15000.0f}}},
 
@@ -177,14 +204,13 @@
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::STATIC,
                  },
-         .initialValue = {.int32Values = {1}}},
+         .initialValue = {.int32Values = {(int)FuelType::FUEL_TYPE_UNLEADED}}},
 
         {.config =
                  {
                          .prop = toInt(VehicleProperty::INFO_EV_BATTERY_CAPACITY),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::STATIC,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.floatValues = {150000.0f}}},
 
@@ -194,14 +220,13 @@
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::STATIC,
                  },
-         .initialValue = {.int32Values = {1}}},
+         .initialValue = {.int32Values = {(int)EvConnectorType::IEC_TYPE_1_AC}}},
 
         {.config =
                  {
                          .prop = toInt(VehicleProperty::INFO_DRIVER_SEAT),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::STATIC,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {SEAT_1_LEFT}}},
 
@@ -210,7 +235,6 @@
                          .prop = toInt(VehicleProperty::INFO_FUEL_DOOR_LOCATION),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::STATIC,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {FUEL_DOOR_REAR_LEFT}}},
 
@@ -219,7 +243,6 @@
                          .prop = toInt(VehicleProperty::INFO_EV_PORT_LOCATION),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::STATIC,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {CHARGE_PORT_FRONT_LEFT}}},
 
@@ -234,7 +257,7 @@
                  {
                          .prop = toInt(VehicleProperty::PERF_VEHICLE_SPEED),
                          .access = VehiclePropertyAccess::READ,
-                         .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                         .changeMode = VehiclePropertyChangeMode::CONTINUOUS,
                          .minSampleRate = 1.0f,
                          .maxSampleRate = 10.0f,
                  },
@@ -265,7 +288,9 @@
                  {
                          .prop = toInt(VehicleProperty::PERF_ODOMETER),
                          .access = VehiclePropertyAccess::READ,
-                         .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                         .changeMode = VehiclePropertyChangeMode::CONTINUOUS,
+                         .minSampleRate = 0.0f,
+                         .maxSampleRate = 10.0f,
                  },
          .initialValue = {.floatValues = {0.0f}}},
 
@@ -285,8 +310,9 @@
                  {
                          .prop = toInt(VehicleProperty::FUEL_LEVEL),
                          .access = VehiclePropertyAccess::READ,
-                         .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+                         .changeMode = VehiclePropertyChangeMode::CONTINUOUS,
+                         .minSampleRate = 0.0f,
+                         .maxSampleRate = 100.0f,
                  },
          .initialValue = {.floatValues = {15000.0f}}},
 
@@ -295,7 +321,6 @@
                          .prop = toInt(VehicleProperty::FUEL_DOOR_OPEN),
                          .access = VehiclePropertyAccess::READ_WRITE,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {0}}},
 
@@ -303,8 +328,9 @@
                  {
                          .prop = toInt(VehicleProperty::EV_BATTERY_LEVEL),
                          .access = VehiclePropertyAccess::READ,
-                         .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+                         .changeMode = VehiclePropertyChangeMode::CONTINUOUS,
+                         .minSampleRate = 0.0f,
+                         .maxSampleRate = 100.0f,
                  },
          .initialValue = {.floatValues = {150000.0f}}},
 
@@ -313,7 +339,6 @@
                          .prop = toInt(VehicleProperty::EV_CHARGE_PORT_OPEN),
                          .access = VehiclePropertyAccess::READ_WRITE,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {0}}},
 
@@ -322,7 +347,6 @@
                          .prop = toInt(VehicleProperty::EV_CHARGE_PORT_CONNECTED),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {0}}},
 
@@ -330,17 +354,17 @@
                  {
                          .prop = toInt(VehicleProperty::EV_BATTERY_INSTANTANEOUS_CHARGE_RATE),
                          .access = VehiclePropertyAccess::READ,
-                         .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+                         .changeMode = VehiclePropertyChangeMode::CONTINUOUS,
+                         .minSampleRate = 1.0f,
+                         .maxSampleRate = 10.0f,
                  },
          .initialValue = {.floatValues = {0.0f}}},
 
         {.config =
                  {
                          .prop = toInt(VehicleProperty::RANGE_REMAINING),
-                         .access = VehiclePropertyAccess::READ,
+                         .access = VehiclePropertyAccess::READ_WRITE,
                          .changeMode = VehiclePropertyChangeMode::CONTINUOUS,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                          .minSampleRate = 1.0f,
                          .maxSampleRate = 2.0f,
                  },
@@ -374,7 +398,7 @@
                          .minSampleRate = 1.0f,
                          .maxSampleRate = 2.0f,
                  },
-         .initialValue = {.floatValues = {200}}},  // units in kPa
+         .initialValue = {.floatValues = {200.0f}}},  // units in kPa
 
         {.config =
                  {
@@ -397,7 +421,6 @@
                          .prop = toInt(VehicleProperty::FUEL_LEVEL_LOW),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {0}}},
 
@@ -430,6 +453,17 @@
                                             .areaId = toInt(VehicleAreaWindow::REAR_WINDSHIELD)}}},
                 .initialValue = {.int32Values = {0}}  // Will be used for all areas.
         },
+        {
+                .config = {.prop = toInt(VehicleProperty::HVAC_ELECTRIC_DEFROSTER_ON),
+                           .access = VehiclePropertyAccess::READ_WRITE,
+                           .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                           .areaConfigs =
+                                   {VehicleAreaConfig{
+                                            .areaId = toInt(VehicleAreaWindow::FRONT_WINDSHIELD)},
+                                    VehicleAreaConfig{
+                                            .areaId = toInt(VehicleAreaWindow::REAR_WINDSHIELD)}}},
+                .initialValue = {.int32Values = {0}}  // Will be used for all areas.
+        },
 
         {.config = {.prop = toInt(VehicleProperty::HVAC_MAX_DEFROST_ON),
                     .access = VehiclePropertyAccess::READ_WRITE,
@@ -558,14 +592,10 @@
                  },
          .initialValue = {.floatValues = {25.0f}}},
 
-        {.config =
-                 {
-                         .prop = toInt(VehicleProperty::HVAC_TEMPERATURE_DISPLAY_UNITS),
-                         .access = VehiclePropertyAccess::READ_WRITE,
-                         .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
-                         .configArray = {(int)VehicleUnit::FAHRENHEIT, (int)VehicleUnit::CELSIUS},
-                 },
+        {.config = {.prop = toInt(VehicleProperty::HVAC_TEMPERATURE_DISPLAY_UNITS),
+                    .access = VehiclePropertyAccess::READ_WRITE,
+                    .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                    .configArray = {(int)VehicleUnit::FAHRENHEIT, (int)VehicleUnit::CELSIUS}},
          .initialValue = {.int32Values = {(int)VehicleUnit::FAHRENHEIT}}},
 
         {.config =
@@ -573,8 +603,8 @@
                          .prop = toInt(VehicleProperty::DISTANCE_DISPLAY_UNITS),
                          .access = VehiclePropertyAccess::READ_WRITE,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                          .configArray = {(int)VehicleUnit::KILOMETER, (int)VehicleUnit::MILE},
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}}
                  },
          .initialValue = {.int32Values = {(int)VehicleUnit::MILE}}},
 
@@ -596,6 +626,14 @@
 
         {.config =
                  {
+                         .prop = toInt(VehicleProperty::TURN_SIGNAL_STATE),
+                         .access = VehiclePropertyAccess::READ,
+                         .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                 },
+         .initialValue = {.int32Values = {toInt(VehicleTurnSignal::NONE)}}},
+
+        {.config =
+                 {
                          .prop = toInt(VehicleProperty::IGNITION_STATE),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
@@ -626,6 +664,50 @@
                                 .prop = kGenerateFakeDataControllingProperty,
                                 .access = VehiclePropertyAccess::WRITE,
                                 .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                                .configArray = {1, 0, 0, 2, 0, 0, 0, 0, 0},
+                        },
+        },
+
+        {
+                .config =
+                        {
+                                .prop = kSetIntPropertyFromVehcileForTest,
+                                .access = VehiclePropertyAccess::WRITE,
+                                .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                                .configArray = {0, 0, 0, 2, 1, 0, 0, 0, 0},
+                        },
+        },
+
+        {
+                .config =
+                        {
+                                .prop = kSetFloatPropertyFromVehcileForTest,
+                                .access = VehiclePropertyAccess::WRITE,
+                                .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                                .configArray = {0, 0, 1, 0, 1, 0, 1, 0, 0},
+                        },
+        },
+
+        {
+                .config =
+                        {
+                                .prop = kSetBooleanPropertyFromVehcileForTest,
+                                .access = VehiclePropertyAccess::WRITE,
+                                .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                                .configArray = {0, 1, 1, 0, 1, 0, 0, 0, 0},
+                        },
+        },
+
+        {
+                .config = {.prop = kMixedTypePropertyForTest,
+                           .access = VehiclePropertyAccess::READ_WRITE,
+                           .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                           .configArray = {1, 1, 0, 2, 0, 0, 1, 0, 0}},
+                .initialValue =
+                        {
+                                .int32Values = {1 /* indicate TRUE boolean value */, 2, 3},
+                                .floatValues = {4.5f},
+                                .stringValue = "MIXED property",
                         },
         },
 
@@ -757,7 +839,6 @@
                          .prop = toInt(VehicleProperty::HEADLIGHTS_STATE),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {LIGHT_STATE_ON}}},
 
@@ -766,7 +847,6 @@
                          .prop = toInt(VehicleProperty::HIGH_BEAM_LIGHTS_STATE),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {LIGHT_STATE_ON}}},
 
@@ -775,7 +855,6 @@
                          .prop = toInt(VehicleProperty::FOG_LIGHTS_STATE),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {LIGHT_STATE_ON}}},
 
@@ -784,7 +863,6 @@
                          .prop = toInt(VehicleProperty::HAZARD_LIGHTS_STATE),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {LIGHT_STATE_ON}}},
 
@@ -793,7 +871,6 @@
                          .prop = toInt(VehicleProperty::HEADLIGHTS_SWITCH),
                          .access = VehiclePropertyAccess::READ_WRITE,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {LIGHT_SWITCH_AUTO}}},
 
@@ -802,7 +879,6 @@
                          .prop = toInt(VehicleProperty::HIGH_BEAM_LIGHTS_SWITCH),
                          .access = VehiclePropertyAccess::READ_WRITE,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {LIGHT_SWITCH_AUTO}}},
 
@@ -811,7 +887,6 @@
                          .prop = toInt(VehicleProperty::FOG_LIGHTS_SWITCH),
                          .access = VehiclePropertyAccess::READ_WRITE,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {LIGHT_SWITCH_AUTO}}},
 
@@ -820,7 +895,6 @@
                          .prop = toInt(VehicleProperty::HAZARD_LIGHTS_SWITCH),
                          .access = VehiclePropertyAccess::READ_WRITE,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {LIGHT_SWITCH_AUTO}}},
 
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp
index e1da030..dc051d8 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp
@@ -131,6 +131,36 @@
 StatusCode EmulatedVehicleHal::set(const VehiclePropValue& propValue) {
     static constexpr bool shouldUpdateStatus = false;
 
+    // set the value from vehcile side, used in end to end test.
+    if (propValue.prop == kSetIntPropertyFromVehcileForTest) {
+        auto mockValue = createVehiclePropValue(VehiclePropertyType::INT32, 1);
+        mockValue->prop = propValue.value.int32Values[0];
+        mockValue->value.int32Values[0] = propValue.value.int32Values[1];
+        mockValue->timestamp = propValue.value.int64Values[0];
+        mockValue->areaId = propValue.areaId;
+        setPropertyFromVehicle(*mockValue);
+        return StatusCode::OK;
+    }
+
+    if (propValue.prop == kSetFloatPropertyFromVehcileForTest) {
+        auto mockValue = createVehiclePropValue(VehiclePropertyType::FLOAT, 1);
+        mockValue->prop = propValue.value.int32Values[0];
+        mockValue->value.floatValues[0] = propValue.value.floatValues[0];
+        mockValue->timestamp = propValue.value.int64Values[0];
+        mockValue->areaId = propValue.areaId;
+        setPropertyFromVehicle(*mockValue);
+        return StatusCode::OK;
+    }
+    if (propValue.prop == kSetBooleanPropertyFromVehcileForTest) {
+        auto mockValue = createVehiclePropValue(VehiclePropertyType::BOOLEAN, 1);
+        mockValue->prop = propValue.value.int32Values[1];
+        mockValue->value.int32Values[0] = propValue.value.int32Values[0];
+        mockValue->timestamp = propValue.value.int64Values[0];
+        mockValue->areaId = propValue.areaId;
+        setPropertyFromVehicle(*mockValue);
+        return StatusCode::OK;
+    }
+
     if (propValue.prop == kGenerateFakeDataControllingProperty) {
         StatusCode status = handleGenerateFakeDataRequest(propValue);
         if (status != StatusCode::OK) {
@@ -198,12 +228,19 @@
         return StatusCode::NOT_AVAILABLE;
     }
 
-    if (!mPropStore->writeValue(propValue, shouldUpdateStatus)) {
-        return StatusCode::INVALID_ARG;
+    /**
+     * After checking all conditions, such as the property is available, a real vhal will
+     * sent the events to Car ECU to take actions.
+     * Google HAL will just add a timestamp for the value and triggle the callback to android.
+     */
+    VehiclePropValuePtr updatedPropValue = getValuePool()->obtain(propValue);
+    updatedPropValue->timestamp = elapsedRealtimeNano();
+    if (!mPropStore->writeValue(*updatedPropValue, shouldUpdateStatus)) {
+        return StatusCode::INTERNAL_ERROR;
     }
 
-    getEmulatorOrDie()->doSetValueFromClient(propValue);
-    doHalEvent(getValuePool()->obtain(propValue));
+    getEmulatorOrDie()->doSetValueFromClient(*updatedPropValue);
+    doHalEvent(std::move(updatedPropValue));
 
     return StatusCode::OK;
 }
@@ -455,7 +492,7 @@
 
     VehiclePropValuePtr updatedPropValue = getValuePool()->obtain(value);
     if (updatedPropValue) {
-        updatedPropValue->timestamp = elapsedRealtimeNano();
+        updatedPropValue->timestamp = value.timestamp;
         updatedPropValue->status = VehiclePropertyStatus::AVAILABLE;
         mPropStore->writeValue(*updatedPropValue, shouldUpdateStatus);
         auto changeMode = mPropStore->getConfigOrDie(value.prop)->changeMode;
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.cpp
index 9eb8894..068333c 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.cpp
@@ -92,7 +92,10 @@
     }
 
     ALOGI("%s: Listening for connections on port %d", __FUNCTION__, DEBUG_SOCKET);
-    ::listen(mListenFd, 1);
+    if (::listen(mListenFd, 1) == -1) {
+        ALOGE("%s: Error on listening: errno: %d: %s", __FUNCTION__, errno, strerror(errno));
+        return false;
+    }
     return true;
 }
 
diff --git a/automotive/vehicle/2.0/types.hal b/automotive/vehicle/2.0/types.hal
index 0f20dd1..bc0b4d3 100644
--- a/automotive/vehicle/2.0/types.hal
+++ b/automotive/vehicle/2.0/types.hal
@@ -35,6 +35,21 @@
     /**
      * Any combination of scalar or vector types. The exact format must be
      * provided in the description of the property.
+     *
+     * For vendor MIXED type properties, configArray needs to be formatted in this
+     * structure.
+     * configArray[0], 1 indicates the property has a String value
+     * configArray[1], 1 indicates the property has a Boolean value .
+     * configArray[2], 1 indicates the property has an Integer value.
+     * configArray[3], the number indicates the size of Integer[] in the property.
+     * configArray[4], 1 indicates the property has a Long value.
+     * configArray[5], the number indicates the size of Long[] in the property.
+     * configArray[6], 1 indicates the property has a Float value.
+     * configArray[7], the number indicates the size of Float[] in the property.
+     * configArray[8], the number indicates the size of byte[] in the property.
+     * For example:
+     * {@code configArray = {1, 1, 1, 3, 0, 0, 0, 0, 0}} indicates the property has
+     * a String value, a Boolean value, an Integer value and an array with 3 integers.
      */
     MIXED           = 0x00e00000,
 
@@ -799,7 +814,7 @@
         | VehicleArea:SEAT),
 
     /**
-     * On/off defrost for designated window
+     * Fan-based defrost for designated window.
      *
      * @change_mode VehiclePropertyChangeMode:ON_CHANGE
      * @access VehiclePropertyAccess:READ_WRITE
@@ -1076,6 +1091,7 @@
      *
      * @change_mode VehiclePropertyChangeMode:STATIC
      * @access VehiclePropertyAccess:READ
+     * @data_enum VehicleHvacFanDirection
      */
     HVAC_FAN_DIRECTION_AVAILABLE = (
         0x0511
@@ -1118,6 +1134,18 @@
         | VehiclePropertyType:INT32
         | VehicleArea:SEAT),
 
+    /**
+     * Electric defrosters' status
+     *
+     * @change_mode VehiclePropertyChangeMode:ON_CHANGE
+     * @access VehiclePropertyAccess:READ_WRITE
+     */
+    HVAC_ELECTRIC_DEFROSTER_ON = (
+        0x0514
+        | VehiclePropertyGroup:SYSTEM
+        | VehiclePropertyType:BOOLEAN
+        | VehicleArea:WINDOW),
+
    /**
      * Distance units for display
      *
@@ -2458,9 +2486,19 @@
  * Bit flags for fan direction
  */
 enum VehicleHvacFanDirection : int32_t {
+    UNKNOWN = 0x0,
+
     FACE = 0x1,
     FLOOR = 0x2,
+    /**
+     * FACE_AND_FLOOR = FACE | FLOOR
+     */
+    FACE_AND_FLOOR = 0x3,
     DEFROST = 0x4,
+    /**
+     * DEFROST_AND_FLOOR = DEFROST | FLOOR
+     */
+    DEFROST_AND_FLOOR = 0x06,
 };
 
 enum VehicleOilLevel : int32_t {
@@ -2499,7 +2537,7 @@
      * power controller must change power state to this state to shutdown
      * system.
      *
-     * int32Values[1] : one of enum_vehicle_ap_power_state_shutdown_param_type
+     * int32Values[1] : one of VehicleApPowerStateShutdownParam
      *
      * SHUTDOWN_PRPARE may be requested from either WAIT_FOR_VHAL or ON states.
      */
@@ -2531,6 +2569,11 @@
 
     /** AP can only shutdown with postponing allowed. */
     SHUTDOWN_ONLY = 3,
+
+    /**
+     * AP may enter deep sleep, but must either sleep or shut down immediately.
+     * Postponing is not allowed. */
+    SLEEP_IMMEDIATELY = 4,
 };
 
 enum VehicleApPowerStateReport : int32_t {
@@ -2723,6 +2766,8 @@
  * Various gears which can be selected by user and chosen in system.
  */
 enum VehicleGear : int32_t {
+    GEAR_UNKNOWN = 0x0000,
+
     GEAR_NEUTRAL = 0x0001,
     GEAR_REVERSE = 0x0002,
     GEAR_PARK = 0x0004,
@@ -3541,4 +3586,3 @@
 enum VmsPublisherInformationIntegerValuesIndex : VmsBaseMessageIntegerValuesIndex {
     PUBLISHER_ID = 1,
 };
-
diff --git a/biometrics/face/1.0/vts/functional/VtsHalBiometricsFaceV1_0TargetTest.cpp b/biometrics/face/1.0/vts/functional/VtsHalBiometricsFaceV1_0TargetTest.cpp
index d3d7387..a4e95ed 100644
--- a/biometrics/face/1.0/vts/functional/VtsHalBiometricsFaceV1_0TargetTest.cpp
+++ b/biometrics/face/1.0/vts/functional/VtsHalBiometricsFaceV1_0TargetTest.cpp
@@ -64,7 +64,7 @@
     // The error passed to the last onError() callback.
     FaceError error;
 
-    // The userId passed to the last onRemoved() callback.
+    // The userId passed to the last callback.
     int32_t userId;
 };
 
@@ -74,24 +74,32 @@
 class FaceCallback : public ::testing::VtsHalHidlTargetCallbackBase<FaceCallbackArgs>,
                      public IBiometricsFaceClientCallback {
   public:
-    Return<void> onEnrollResult(uint64_t, uint32_t, int32_t, uint32_t) override {
-        NotifyFromCallback(kCallbackNameOnEnrollResult);
+    Return<void> onEnrollResult(uint64_t, uint32_t, int32_t userId, uint32_t) override {
+        FaceCallbackArgs args = {};
+        args.userId = userId;
+        NotifyFromCallback(kCallbackNameOnEnrollResult, args);
         return Void();
     }
 
-    Return<void> onAuthenticated(uint64_t, uint32_t, int32_t, const hidl_vec<uint8_t>&) override {
-        NotifyFromCallback(kCallbackNameOnAuthenticated);
+    Return<void> onAuthenticated(uint64_t, uint32_t, int32_t userId,
+                                 const hidl_vec<uint8_t>&) override {
+        FaceCallbackArgs args = {};
+        args.userId = userId;
+        NotifyFromCallback(kCallbackNameOnAuthenticated, args);
         return Void();
     }
 
-    Return<void> onAcquired(uint64_t, int32_t, FaceAcquiredInfo, int32_t) override {
-        NotifyFromCallback(kCallbackNameOnAcquired);
+    Return<void> onAcquired(uint64_t, int32_t userId, FaceAcquiredInfo, int32_t) override {
+        FaceCallbackArgs args = {};
+        args.userId = userId;
+        NotifyFromCallback(kCallbackNameOnAcquired, args);
         return Void();
     }
 
-    Return<void> onError(uint64_t, int32_t, FaceError error, int32_t) override {
+    Return<void> onError(uint64_t, int32_t userId, FaceError error, int32_t) override {
         FaceCallbackArgs args = {};
         args.error = error;
+        args.userId = userId;
         NotifyFromCallback(kCallbackNameOnError, args);
         return Void();
     }
@@ -103,8 +111,10 @@
         return Void();
     }
 
-    Return<void> onEnumerate(uint64_t, const hidl_vec<uint32_t>&, int32_t) override {
-        NotifyFromCallback(kCallbackNameOnEnumerate);
+    Return<void> onEnumerate(uint64_t, const hidl_vec<uint32_t>&, int32_t userId) override {
+        FaceCallbackArgs args = {};
+        args.userId = userId;
+        NotifyFromCallback(kCallbackNameOnEnumerate, args);
         return Void();
     }
 
@@ -185,6 +195,7 @@
     // onError should be called with a meaningful (nonzero) error.
     auto res = mCallback->WaitForCallback(kCallbackNameOnError);
     EXPECT_TRUE(res.no_timeout);
+    EXPECT_EQ(kUserId, res.args->userId);
     EXPECT_EQ(FaceError::UNABLE_TO_PROCESS, res.args->error);
 }
 
@@ -205,6 +216,7 @@
     // onError should be called with a meaningful (nonzero) error.
     auto res = mCallback->WaitForCallback(kCallbackNameOnError);
     EXPECT_TRUE(res.no_timeout);
+    EXPECT_EQ(kUserId, res.args->userId);
     EXPECT_EQ(FaceError::UNABLE_TO_PROCESS, res.args->error);
 }
 
@@ -271,6 +283,7 @@
     Return<Status> ret = mService->enumerate();
     ASSERT_EQ(Status::OK, static_cast<Status>(ret));
     auto res = mCallback->WaitForCallback(kCallbackNameOnEnumerate);
+    EXPECT_EQ(kUserId, res.args->userId);
     EXPECT_TRUE(res.no_timeout);
 }
 
@@ -330,6 +343,7 @@
     auto res = mCallback->WaitForCallback(kCallbackNameOnError);
     // make sure callback was invoked within kRevokeChallengeTimeout
     EXPECT_TRUE(res.no_timeout);
+    EXPECT_EQ(kUserId, res.args->userId);
     EXPECT_EQ(FaceError::CANCELED, res.args->error);
 }
 
diff --git a/camera/common/1.0/default/Android.bp b/camera/common/1.0/default/Android.bp
index 3e5c6d7..f4390b2 100644
--- a/camera/common/1.0/default/Android.bp
+++ b/camera/common/1.0/default/Android.bp
@@ -21,6 +21,7 @@
         "libcamera_metadata",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "libexif",
     ],
     include_dirs: ["system/media/private/camera/include"],
diff --git a/camera/common/1.0/default/HandleImporter.cpp b/camera/common/1.0/default/HandleImporter.cpp
index b8c40e9..76f9778 100644
--- a/camera/common/1.0/default/HandleImporter.cpp
+++ b/camera/common/1.0/default/HandleImporter.cpp
@@ -27,7 +27,9 @@
 
 using MapperErrorV2 = android::hardware::graphics::mapper::V2_0::Error;
 using MapperErrorV3 = android::hardware::graphics::mapper::V3_0::Error;
+using MapperErrorV4 = android::hardware::graphics::mapper::V4_0::Error;
 using IMapperV3 = android::hardware::graphics::mapper::V3_0::IMapper;
+using IMapperV4 = android::hardware::graphics::mapper::V4_0::IMapper;
 
 HandleImporter::HandleImporter() : mInitialized(false) {}
 
@@ -36,6 +38,12 @@
         return;
     }
 
+    mMapperV4 = IMapperV4::getService();
+    if (mMapperV4 != nullptr) {
+        mInitialized = true;
+        return;
+    }
+
     mMapperV3 = IMapperV3::getService();
     if (mMapperV3 != nullptr) {
         mInitialized = true;
@@ -53,6 +61,7 @@
 }
 
 void HandleImporter::cleanup() {
+    mMapperV4.clear();
     mMapperV3.clear();
     mMapperV2.clear();
     mInitialized = false;
@@ -151,6 +160,10 @@
         initializeLocked();
     }
 
+    if (mMapperV4 != nullptr) {
+        return importBufferInternal<IMapperV4, MapperErrorV4>(mMapperV4, handle);
+    }
+
     if (mMapperV3 != nullptr) {
         return importBufferInternal<IMapperV3, MapperErrorV3>(mMapperV3, handle);
     }
@@ -159,7 +172,7 @@
         return importBufferInternal<IMapper, MapperErrorV2>(mMapperV2, handle);
     }
 
-    ALOGE("%s: mMapperV3 and mMapperV2 are both null!", __FUNCTION__);
+    ALOGE("%s: mMapperV4, mMapperV3 and mMapperV2 are all null!", __FUNCTION__);
     return false;
 }
 
@@ -169,12 +182,17 @@
     }
 
     Mutex::Autolock lock(mLock);
-    if (mMapperV3 == nullptr && mMapperV2 == nullptr) {
-        ALOGE("%s: mMapperV3 and mMapperV2 are both null!", __FUNCTION__);
+    if (mMapperV4 == nullptr && mMapperV3 == nullptr && mMapperV2 == nullptr) {
+        ALOGE("%s: mMapperV4, mMapperV3 and mMapperV2 are all null!", __FUNCTION__);
         return;
     }
 
-    if (mMapperV3 != nullptr) {
+    if (mMapperV4 != nullptr) {
+        auto ret = mMapperV4->freeBuffer(const_cast<native_handle_t*>(handle));
+        if (!ret.isOk()) {
+            ALOGE("%s: mapper freeBuffer failed: %s", __FUNCTION__, ret.description().c_str());
+        }
+    } else if (mMapperV3 != nullptr) {
         auto ret = mMapperV3->freeBuffer(const_cast<native_handle_t*>(handle));
         if (!ret.isOk()) {
             ALOGE("%s: mapper freeBuffer failed: %s",
@@ -222,14 +240,27 @@
         initializeLocked();
     }
 
-    if (mMapperV3 == nullptr && mMapperV2 == nullptr) {
-        ALOGE("%s: mMapperV3 and mMapperV2 are both null!", __FUNCTION__);
+    if (mMapperV4 == nullptr && mMapperV3 == nullptr && mMapperV2 == nullptr) {
+        ALOGE("%s: mMapperV4, mMapperV3 and mMapperV2 are all null!", __FUNCTION__);
         return ret;
     }
 
     hidl_handle acquireFenceHandle;
     auto buffer = const_cast<native_handle_t*>(buf);
-    if (mMapperV3 != nullptr) {
+    if (mMapperV4 != nullptr) {
+        IMapperV4::Rect accessRegion{0, 0, static_cast<int>(size), 1};
+        // No need to use bytesPerPixel and bytesPerStride because we are using
+        // an 1-D buffer and accressRegion.
+        mMapperV4->lock(buffer, cpuUsage, accessRegion, acquireFenceHandle,
+                        [&](const auto& tmpError, const auto& tmpPtr, const auto& /*bytesPerPixel*/,
+                            const auto& /*bytesPerStride*/) {
+                            if (tmpError == MapperErrorV4::NONE) {
+                                ret = tmpPtr;
+                            } else {
+                                ALOGE("%s: failed to lock error %d!", __FUNCTION__, tmpError);
+                            }
+                        });
+    } else if (mMapperV3 != nullptr) {
         IMapperV3::Rect accessRegion { 0, 0, static_cast<int>(size), 1 };
         // No need to use bytesPerPixel and bytesPerStride because we are using
         // an 1-D buffer and accressRegion.
@@ -269,6 +300,10 @@
         initializeLocked();
     }
 
+    if (mMapperV4 != nullptr) {
+        return lockYCbCrInternal<IMapperV4, MapperErrorV4>(mMapperV4, buf, cpuUsage, accessRegion);
+    }
+
     if (mMapperV3 != nullptr) {
         return lockYCbCrInternal<IMapperV3, MapperErrorV3>(
                 mMapperV3, buf, cpuUsage, accessRegion);
@@ -279,11 +314,14 @@
                 mMapperV2, buf, cpuUsage, accessRegion);
     }
 
-    ALOGE("%s: mMapperV3 and mMapperV2 are both null!", __FUNCTION__);
+    ALOGE("%s: mMapperV4, mMapperV3 and mMapperV2 are all null!", __FUNCTION__);
     return {};
 }
 
 int HandleImporter::unlock(buffer_handle_t& buf) {
+    if (mMapperV4 != nullptr) {
+        return unlockInternal<IMapperV4, MapperErrorV4>(mMapperV4, buf);
+    }
     if (mMapperV3 != nullptr) {
         return unlockInternal<IMapperV3, MapperErrorV3>(mMapperV3, buf);
     }
@@ -291,7 +329,7 @@
         return unlockInternal<IMapper, MapperErrorV2>(mMapperV2, buf);
     }
 
-    ALOGE("%s: mMapperV3 and mMapperV2 are both null!", __FUNCTION__);
+    ALOGE("%s: mMapperV4, mMapperV3 and mMapperV2 are all null!", __FUNCTION__);
     return -1;
 }
 
diff --git a/camera/common/1.0/default/include/HandleImporter.h b/camera/common/1.0/default/include/HandleImporter.h
index a93d455..fc2bbd1 100644
--- a/camera/common/1.0/default/include/HandleImporter.h
+++ b/camera/common/1.0/default/include/HandleImporter.h
@@ -17,10 +17,11 @@
 #ifndef CAMERA_COMMON_1_0_HANDLEIMPORTED_H
 #define CAMERA_COMMON_1_0_HANDLEIMPORTED_H
 
-#include <utils/Mutex.h>
 #include <android/hardware/graphics/mapper/2.0/IMapper.h>
 #include <android/hardware/graphics/mapper/3.0/IMapper.h>
+#include <android/hardware/graphics/mapper/4.0/IMapper.h>
 #include <cutils/native_handle.h>
+#include <utils/Mutex.h>
 
 using android::hardware::graphics::mapper::V2_0::IMapper;
 using android::hardware::graphics::mapper::V2_0::YCbCrLayout;
@@ -70,6 +71,7 @@
     bool mInitialized;
     sp<IMapper> mMapperV2;
     sp<graphics::mapper::V3_0::IMapper> mMapperV3;
+    sp<graphics::mapper::V4_0::IMapper> mMapperV4;
 };
 
 } // namespace helper
diff --git a/camera/device/1.0/default/Android.bp b/camera/device/1.0/default/Android.bp
index 97d0b5f..e6e6485 100644
--- a/camera/device/1.0/default/Android.bp
+++ b/camera/device/1.0/default/Android.bp
@@ -14,6 +14,7 @@
         "android.hardware.graphics.allocator@2.0",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "android.hardware.graphics.common@1.0",
         "android.hidl.allocator@1.0",
         "android.hidl.memory@1.0",
diff --git a/camera/device/3.2/default/Android.bp b/camera/device/3.2/default/Android.bp
index e4d9e85..878878d 100644
--- a/camera/device/3.2/default/Android.bp
+++ b/camera/device/3.2/default/Android.bp
@@ -13,6 +13,7 @@
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "liblog",
         "libhardware",
         "libcamera_metadata",
diff --git a/camera/device/3.3/default/Android.bp b/camera/device/3.3/default/Android.bp
index d964f3d..7d51434 100644
--- a/camera/device/3.3/default/Android.bp
+++ b/camera/device/3.3/default/Android.bp
@@ -15,6 +15,7 @@
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "liblog",
         "libhardware",
         "libcamera_metadata",
diff --git a/camera/device/3.4/default/Android.bp b/camera/device/3.4/default/Android.bp
index 71a9e77..59e8329 100644
--- a/camera/device/3.4/default/Android.bp
+++ b/camera/device/3.4/default/Android.bp
@@ -48,6 +48,7 @@
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "liblog",
         "libhardware",
         "libcamera_metadata",
@@ -84,6 +85,7 @@
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "liblog",
         "libhardware",
         "libcamera_metadata",
diff --git a/camera/device/3.5/default/Android.bp b/camera/device/3.5/default/Android.bp
index 43362fd..1c307ee 100644
--- a/camera/device/3.5/default/Android.bp
+++ b/camera/device/3.5/default/Android.bp
@@ -49,6 +49,7 @@
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "liblog",
         "libhardware",
         "libcamera_metadata",
@@ -81,7 +82,8 @@
         "android.hardware.camera.device@3.5",
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
-	"android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "liblog",
         "libhardware",
         "libcamera_metadata",
diff --git a/camera/device/3.5/types.hal b/camera/device/3.5/types.hal
index 6d861e2..38493b4 100644
--- a/camera/device/3.5/types.hal
+++ b/camera/device/3.5/types.hal
@@ -23,7 +23,8 @@
 /**
  * If the result metadata cannot be produced for a physical camera device part of a logical
  * multi-camera, then HAL must invoke the notification callback and pass a message with ERROR_RESULT
- * code and errorStreamId that contains the stream id associated with that physical device.
+ * code and errorStreamId that contains the stream id associated with that physical device. Such
+ * callback must be made before the final processCaptureResult() call for the corresponding request.
  * The behavior during absent result metadata remains unchanged for a logical or a non-logical
  * camera device and the errorStreamId must be set to -1.
  */
diff --git a/camera/metadata/3.5/Android.bp b/camera/metadata/3.5/Android.bp
new file mode 100644
index 0000000..4ebd069
--- /dev/null
+++ b/camera/metadata/3.5/Android.bp
@@ -0,0 +1,19 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.camera.metadata@3.5",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+    ],
+    interfaces: [
+        "android.hardware.camera.metadata@3.2",
+        "android.hardware.camera.metadata@3.3",
+        "android.hardware.camera.metadata@3.4",
+    ],
+    gen_java: true,
+}
+
diff --git a/camera/metadata/3.5/types.hal b/camera/metadata/3.5/types.hal
new file mode 100644
index 0000000..b9451c8
--- /dev/null
+++ b/camera/metadata/3.5/types.hal
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Autogenerated from camera metadata definitions in
+ * /system/media/camera/docs/metadata_definitions.xml
+ * *** DO NOT EDIT BY HAND ***
+ */
+
+package android.hardware.camera.metadata@3.5;
+
+import android.hardware.camera.metadata@3.2;
+import android.hardware.camera.metadata@3.3;
+import android.hardware.camera.metadata@3.4;
+
+// No new metadata sections added in this revision
+
+/**
+ * Main enumeration for defining camera metadata tags added in this revision
+ *
+ * <p>Partial documentation is included for each tag; for complete documentation, reference
+ * '/system/media/camera/docs/docs.html' in the corresponding Android source tree.</p>
+ */
+enum CameraMetadataTag : @3.4::CameraMetadataTag {
+    /** android.control.availableBokehCapabilities [static, int32[], public]
+     *
+     * <p>The list of bokeh modes that are supported by this camera device, and each bokeh mode's
+     * maximum streaming (non-stall) size with bokeh effect.</p>
+     */
+    ANDROID_CONTROL_AVAILABLE_BOKEH_CAPABILITIES = android.hardware.camera.metadata@3.3::CameraMetadataTag:ANDROID_CONTROL_END_3_3,
+
+    /** android.control.bokehMode [dynamic, enum, public]
+     *
+     * <p>Whether bokeh mode is enabled for a particular capture request.</p>
+     */
+    ANDROID_CONTROL_BOKEH_MODE,
+
+    ANDROID_CONTROL_END_3_5,
+
+};
+
+/*
+ * Enumeration definitions for the various entries that need them
+ */
+
+/** android.control.bokehMode enumeration values
+ * @see ANDROID_CONTROL_BOKEH_MODE
+ */
+enum CameraMetadataEnumAndroidControlBokehMode : uint32_t {
+    ANDROID_CONTROL_BOKEH_MODE_OFF,
+    ANDROID_CONTROL_BOKEH_MODE_STILL_CAPTURE,
+    ANDROID_CONTROL_BOKEH_MODE_CONTINUOUS,
+};
+
+/** android.request.availableCapabilities enumeration values added since v3.4
+ * @see ANDROID_REQUEST_AVAILABLE_CAPABILITIES
+ */
+enum CameraMetadataEnumAndroidRequestAvailableCapabilities :
+        @3.4::CameraMetadataEnumAndroidRequestAvailableCapabilities {
+    ANDROID_REQUEST_AVAILABLE_CAPABILITIES_SYSTEM_CAMERA,
+};
diff --git a/camera/provider/2.4/default/Android.bp b/camera/provider/2.4/default/Android.bp
index 95e27fd..9203b8d 100644
--- a/camera/provider/2.4/default/Android.bp
+++ b/camera/provider/2.4/default/Android.bp
@@ -13,6 +13,7 @@
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "android.hidl.allocator@1.0",
         "android.hidl.memory@1.0",
         "camera.device@1.0-impl",
@@ -51,6 +52,7 @@
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "android.hidl.allocator@1.0",
         "android.hidl.memory@1.0",
         "camera.device@3.3-impl",
@@ -93,6 +95,8 @@
         "android.hardware.camera.provider@2.4-external",
         "android.hardware.camera.provider@2.4-legacy",
         "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "android.hidl.allocator@1.0",
         "android.hidl.memory@1.0",
         "camera.device@1.0-impl",
@@ -137,6 +141,8 @@
         "android.hardware.camera.device@3.5",
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "android.hidl.allocator@1.0",
         "android.hidl.memory@1.0",
         "libbinder",
diff --git a/camera/provider/2.4/vts/functional/Android.bp b/camera/provider/2.4/vts/functional/Android.bp
index 2c3ed37..5fe7b19 100644
--- a/camera/provider/2.4/vts/functional/Android.bp
+++ b/camera/provider/2.4/vts/functional/Android.bp
@@ -43,9 +43,11 @@
         "android.hardware.camera.provider@2.5",
         "android.hardware.graphics.allocator@2.0",
         "android.hardware.graphics.allocator@3.0",
+        "android.hardware.graphics.allocator@4.0",
         "android.hardware.graphics.common@1.0",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "android.hidl.allocator@1.0",
         "libgrallocusage",
         "libhidlmemory",
diff --git a/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp b/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
index a5369e7..49f9fe1 100644
--- a/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
+++ b/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
@@ -55,9 +55,11 @@
 
 #include <android/hardware/graphics/allocator/2.0/IAllocator.h>
 #include <android/hardware/graphics/allocator/3.0/IAllocator.h>
+#include <android/hardware/graphics/allocator/4.0/IAllocator.h>
 #include <android/hardware/graphics/mapper/2.0/IMapper.h>
 #include <android/hardware/graphics/mapper/2.0/types.h>
 #include <android/hardware/graphics/mapper/3.0/IMapper.h>
+#include <android/hardware/graphics/mapper/4.0/IMapper.h>
 #include <android/hidl/allocator/1.0/IAllocator.h>
 #include <android/hidl/memory/1.0/IMapper.h>
 #include <android/hidl/memory/1.0/IMemory.h>
@@ -622,7 +624,7 @@
 
         Return<void> returnStreamBuffers(const hidl_vec<StreamBuffer>& buffers) override;
 
-        void setCurrentStreamConfig(const hidl_vec<V3_2::Stream>& streams,
+        void setCurrentStreamConfig(const hidl_vec<V3_4::Stream>& streams,
                 const hidl_vec<V3_2::HalStream>& halStreams);
 
         void waitForBuffersReturned();
@@ -639,7 +641,7 @@
         /* members for requestStreamBuffers() and returnStreamBuffers()*/
         std::mutex mLock; // protecting members below
         bool                      mUseHalBufManager = false;
-        hidl_vec<V3_2::Stream>    mStreams;
+        hidl_vec<V3_4::Stream>    mStreams;
         hidl_vec<V3_2::HalStream> mHalStreams;
         uint64_t mNextBufferId = 1;
         using OutstandingBuffers = std::unordered_map<uint64_t, hidl_handle>;
@@ -776,6 +778,7 @@
             const CameraMetadata& chars, int deviceVersion,
             const hidl_vec<hidl_string>& deviceNames);
     void verifyCameraCharacteristics(Status status, const CameraMetadata& chars);
+    void verifyBokehCharacteristics(const camera_metadata_t* metadata);
     void verifyRecommendedConfigs(const CameraMetadata& metadata);
     void verifyMonochromeCharacteristics(const CameraMetadata& chars, int deviceVersion);
     void verifyMonochromeCameraResult(
@@ -799,7 +802,7 @@
 
     bool isDepthOnly(camera_metadata_t* staticMeta);
 
-    static Status getAvailableOutputStreams(camera_metadata_t *staticMeta,
+    static Status getAvailableOutputStreams(const camera_metadata_t *staticMeta,
             std::vector<AvailableStream> &outputStreams,
             const AvailableStream *threshold = nullptr);
     static Status getJpegBufferSize(camera_metadata_t *staticMeta,
@@ -865,6 +868,8 @@
         int32_t partialResultCount;
 
         // For buffer drop errors, the stream ID for the stream that lost a buffer.
+        // For physical sub-camera result errors, the Id of the physical stream
+        // for the physical sub-camera.
         // Otherwise -1.
         int32_t errorStreamId;
 
@@ -878,6 +883,8 @@
         // return from HAL but framework.
         ::android::Vector<StreamBuffer> resultOutputBuffers;
 
+        std::unordered_set<string> expectedPhysicalResults;
+
         InFlightRequest() :
                 shutterTimestamp(0),
                 errorCodeValid(false),
@@ -907,6 +914,24 @@
                 partialResultCount(0),
                 errorStreamId(-1),
                 hasInputBuffer(hasInput) {}
+
+        InFlightRequest(ssize_t numBuffers, bool hasInput,
+                bool partialResults, uint32_t partialCount,
+                const std::unordered_set<string>& extraPhysicalResult,
+                std::shared_ptr<ResultMetadataQueue> queue = nullptr) :
+                shutterTimestamp(0),
+                errorCodeValid(false),
+                errorCode(ErrorCode::ERROR_BUFFER),
+                usePartialResult(partialResults),
+                numPartialResults(partialCount),
+                resultQueue(queue),
+                haveResultMetadata(false),
+                numBuffersLeft(numBuffers),
+                frameNumber(0),
+                partialResultCount(0),
+                errorStreamId(-1),
+                hasInputBuffer(hasInput),
+                expectedPhysicalResults(extraPhysicalResult) {}
     };
 
     // Map from frame number to the in-flight request state
@@ -1124,6 +1149,13 @@
             return notify;
         }
 
+        if (physicalCameraMetadata.size() != request->expectedPhysicalResults.size()) {
+            ALOGE("%s: Frame %d: Returned physical metadata count %zu "
+                    "must be equal to expected count %zu", __func__, frameNumber,
+                    physicalCameraMetadata.size(), request->expectedPhysicalResults.size());
+            ADD_FAILURE();
+            return notify;
+        }
         std::vector<::android::hardware::camera::device::V3_2::CameraMetadata> physResultMetadata;
         physResultMetadata.resize(physicalCameraMetadata.size());
         for (size_t i = 0; i < physicalCameraMetadata.size(); i++) {
@@ -1251,11 +1283,11 @@
 }
 
 void CameraHidlTest::DeviceCb::setCurrentStreamConfig(
-        const hidl_vec<V3_2::Stream>& streams, const hidl_vec<V3_2::HalStream>& halStreams) {
+        const hidl_vec<V3_4::Stream>& streams, const hidl_vec<V3_2::HalStream>& halStreams) {
     ASSERT_EQ(streams.size(), halStreams.size());
     ASSERT_NE(streams.size(), 0);
     for (size_t i = 0; i < streams.size(); i++) {
-        ASSERT_EQ(streams[i].id, halStreams[i].id);
+        ASSERT_EQ(streams[i].v3_2.id, halStreams[i].id);
     }
     std::lock_guard<std::mutex> l(mLock);
     mUseHalBufManager = true;
@@ -1293,16 +1325,6 @@
     std::lock_guard<std::mutex> l(mParent->mLock);
 
     for (size_t i = 0; i < messages.size(); i++) {
-        ssize_t idx = mParent->mInflightMap.indexOfKey(
-                messages[i].msg.shutter.frameNumber);
-        if (::android::NAME_NOT_FOUND == idx) {
-            ALOGE("%s: Unexpected frame number! received: %u",
-                  __func__, messages[i].msg.shutter.frameNumber);
-            ADD_FAILURE();
-            break;
-        }
-        InFlightRequest *r = mParent->mInflightMap.editValueAt(idx);
-
         switch(messages[i].type) {
             case MsgType::ERROR:
                 if (ErrorCode::ERROR_DEVICE == messages[i].msg.error.errorCode) {
@@ -1310,13 +1332,59 @@
                           __func__);
                     ADD_FAILURE();
                 } else {
-                    r->errorCodeValid = true;
-                    r->errorCode = messages[i].msg.error.errorCode;
-                    r->errorStreamId = messages[i].msg.error.errorStreamId;
+                    ssize_t idx = mParent->mInflightMap.indexOfKey(
+                            messages[i].msg.error.frameNumber);
+                    if (::android::NAME_NOT_FOUND == idx) {
+                        ALOGE("%s: Unexpected error frame number! received: %u",
+                              __func__, messages[i].msg.error.frameNumber);
+                        ADD_FAILURE();
+                        break;
+                    }
+                    InFlightRequest *r = mParent->mInflightMap.editValueAt(idx);
+
+                    if (ErrorCode::ERROR_RESULT == messages[i].msg.error.errorCode &&
+                            messages[i].msg.error.errorStreamId != -1) {
+                        if (r->haveResultMetadata) {
+                            ALOGE("%s: Camera must report physical camera result error before "
+                                    "the final capture result!", __func__);
+                            ADD_FAILURE();
+                        } else {
+                            for (size_t j = 0; j < mStreams.size(); j++) {
+                                if (mStreams[j].v3_2.id == messages[i].msg.error.errorStreamId) {
+                                    hidl_string physicalCameraId = mStreams[j].physicalCameraId;
+                                    bool idExpected = r->expectedPhysicalResults.find(
+                                            physicalCameraId) != r->expectedPhysicalResults.end();
+                                    if (!idExpected) {
+                                        ALOGE("%s: ERROR_RESULT's error stream's physicalCameraId "
+                                                "%s must be expected", __func__,
+                                                physicalCameraId.c_str());
+                                        ADD_FAILURE();
+                                    } else {
+                                        r->expectedPhysicalResults.erase(physicalCameraId);
+                                    }
+                                    break;
+                                }
+                            }
+                        }
+                    } else {
+                        r->errorCodeValid = true;
+                        r->errorCode = messages[i].msg.error.errorCode;
+                        r->errorStreamId = messages[i].msg.error.errorStreamId;
+                  }
                 }
                 break;
             case MsgType::SHUTTER:
+            {
+                ssize_t idx = mParent->mInflightMap.indexOfKey(messages[i].msg.shutter.frameNumber);
+                if (::android::NAME_NOT_FOUND == idx) {
+                    ALOGE("%s: Unexpected shutter frame number! received: %u",
+                          __func__, messages[i].msg.shutter.frameNumber);
+                    ADD_FAILURE();
+                    break;
+                }
+                InFlightRequest *r = mParent->mInflightMap.editValueAt(idx);
                 r->shutterTimestamp = messages[i].msg.shutter.timestamp;
+            }
                 break;
             default:
                 ALOGE("%s: Unsupported notify message %d", __func__,
@@ -1357,7 +1425,7 @@
     for (size_t i = 0; i < bufReqs.size(); i++) {
         bool found = false;
         for (size_t idx = 0; idx < mStreams.size(); idx++) {
-            if (bufReqs[i].streamId == mStreams[idx].id) {
+            if (bufReqs[i].streamId == mStreams[idx].v3_2.id) {
                 found = true;
                 indexes[i] = idx;
                 break;
@@ -1381,7 +1449,7 @@
         const auto& halStream = mHalStreams[idx];
         const V3_5::BufferRequest& bufReq = bufReqs[i];
         if (mOutstandingBufferIds[idx].size() + bufReq.numBuffersRequested > halStream.maxBuffers) {
-            bufRets[i].streamId = stream.id;
+            bufRets[i].streamId = stream.v3_2.id;
             bufRets[i].val.error(StreamBufferRequestError::MAX_BUFFER_EXCEEDED);
             allStreamOk = false;
             continue;
@@ -1390,17 +1458,17 @@
         hidl_vec<StreamBuffer> tmpRetBuffers(bufReq.numBuffersRequested);
         for (size_t j = 0; j < bufReq.numBuffersRequested; j++) {
             hidl_handle buffer_handle;
-            mParent->allocateGraphicBuffer(stream.width, stream.height,
+            mParent->allocateGraphicBuffer(stream.v3_2.width, stream.v3_2.height,
                     android_convertGralloc1To0Usage(
                             halStream.producerUsage, halStream.consumerUsage),
                     halStream.overrideFormat, &buffer_handle);
 
-            tmpRetBuffers[j] = {stream.id, mNextBufferId, buffer_handle, BufferStatus::OK,
+            tmpRetBuffers[j] = {stream.v3_2.id, mNextBufferId, buffer_handle, BufferStatus::OK,
                                 nullptr, nullptr};
             mOutstandingBufferIds[idx].insert(std::make_pair(mNextBufferId++, buffer_handle));
         }
         atLeastOneStreamOk = true;
-        bufRets[i].streamId = stream.id;
+        bufRets[i].streamId = stream.v3_2.id;
         bufRets[i].val.buffers(std::move(tmpRetBuffers));
     }
 
@@ -1430,7 +1498,7 @@
     for (const auto& buf : buffers) {
         bool found = false;
         for (size_t idx = 0; idx < mOutstandingBufferIds.size(); idx++) {
-            if (mStreams[idx].id == buf.streamId &&
+            if (mStreams[idx].v3_2.id == buf.streamId &&
                     mOutstandingBufferIds[idx].count(buf.bufferId) == 1) {
                 mOutstandingBufferIds[idx].erase(buf.bufferId);
                 // TODO: check do we need to close/delete native handle or assume we have enough
@@ -4157,7 +4225,7 @@
         ASSERT_TRUE(resultQueueRet.isOk());
 
         InFlightRequest inflightReq = {static_cast<ssize_t> (halStreamConfig.streams.size()), false,
-            supportsPartialResults, partialResultCount, resultQueue};
+            supportsPartialResults, partialResultCount, physicalIds, resultQueue};
 
         std::vector<hidl_handle> graphicBuffers;
         graphicBuffers.reserve(halStreamConfig.streams.size());
@@ -4236,7 +4304,7 @@
             request.v3_2.outputBuffers[0].buffer = nullptr;
             mInflightMap.clear();
             inflightReq = {static_cast<ssize_t> (physicalIds.size()), false,
-                supportsPartialResults, partialResultCount, resultQueue};
+                supportsPartialResults, partialResultCount, physicalIds, resultQueue};
             mInflightMap.add(request.v3_2.frameNumber, &inflightReq);
         }
 
@@ -4789,7 +4857,7 @@
 
 // Retrieve all valid output stream resolutions from the camera
 // static characteristics.
-Status CameraHidlTest::getAvailableOutputStreams(camera_metadata_t *staticMeta,
+Status CameraHidlTest::getAvailableOutputStreams(const camera_metadata_t *staticMeta,
         std::vector<AvailableStream> &outputStreams,
         const AvailableStream *threshold) {
     AvailableStream depthPreviewThreshold = {kMaxPreviewWidth, kMaxPreviewHeight,
@@ -5315,10 +5383,10 @@
                     ASSERT_EQ(physicalIds.size(), halConfig.streams.size());
                     *halStreamConfig = halConfig;
                     if (*useHalBufManager) {
-                        hidl_vec<V3_2::Stream> streams(physicalIds.size());
+                        hidl_vec<V3_4::Stream> streams(physicalIds.size());
                         hidl_vec<V3_2::HalStream> halStreams(physicalIds.size());
                         for (size_t i = 0; i < physicalIds.size(); i++) {
-                            streams[i] = streams3_4[i].v3_2;
+                            streams[i] = streams3_4[i];
                             halStreams[i] = halConfig.streams[i].v3_3.v3_2;
                         }
                         cb->setCurrentStreamConfig(streams, halStreams);
@@ -5493,9 +5561,9 @@
                     halStreamConfig->streams.resize(1);
                     halStreamConfig->streams[0] = halConfig.streams[0].v3_3.v3_2;
                     if (*useHalBufManager) {
-                        hidl_vec<V3_2::Stream> streams(1);
+                        hidl_vec<V3_4::Stream> streams(1);
                         hidl_vec<V3_2::HalStream> halStreams(1);
-                        streams[0] = stream3_2;
+                        streams[0] = config3_4.streams[0];
                         halStreams[0] = halConfig.streams[0].v3_3.v3_2;
                         cb->setCurrentStreamConfig(streams, halStreams);
                     }
@@ -5772,6 +5840,101 @@
             ADD_FAILURE() << "Get Heic maxJpegAppSegmentsCount failed!";
         }
     }
+
+    verifyBokehCharacteristics(metadata);
+}
+
+void CameraHidlTest::verifyBokehCharacteristics(const camera_metadata_t* metadata) {
+    camera_metadata_ro_entry entry;
+    int retcode = 0;
+
+    // Check key availability in capabilities, request and result.
+
+    retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_REQUEST_AVAILABLE_REQUEST_KEYS, &entry);
+    bool hasBokehRequestKey = false;
+    if ((0 == retcode) && (entry.count > 0)) {
+        hasBokehRequestKey = std::find(entry.data.i32, entry.data.i32+entry.count,
+                ANDROID_CONTROL_BOKEH_MODE) != entry.data.i32+entry.count;
+    } else {
+        ADD_FAILURE() << "Get camera availableRequestKeys failed!";
+    }
+
+    retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_REQUEST_AVAILABLE_RESULT_KEYS, &entry);
+    bool hasBokehResultKey = false;
+    if ((0 == retcode) && (entry.count > 0)) {
+        hasBokehResultKey = std::find(entry.data.i32, entry.data.i32+entry.count,
+                ANDROID_CONTROL_BOKEH_MODE) != entry.data.i32+entry.count;
+    } else {
+        ADD_FAILURE() << "Get camera availableResultKeys failed!";
+    }
+
+    retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_REQUEST_AVAILABLE_CHARACTERISTICS_KEYS, &entry);
+    bool hasBokehCharacteristicsKey = false;
+    if ((0 == retcode) && (entry.count > 0)) {
+        hasBokehCharacteristicsKey = std::find(entry.data.i32, entry.data.i32+entry.count,
+                ANDROID_CONTROL_AVAILABLE_BOKEH_CAPABILITIES) != entry.data.i32+entry.count;
+    } else {
+        ADD_FAILURE() << "Get camera availableCharacteristicsKeys failed!";
+    }
+    retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_CONTROL_AVAILABLE_BOKEH_CAPABILITIES, &entry);
+    bool hasAvailableBokehCaps = (0 == retcode && entry.count > 0);
+
+    // Bokeh keys must all be available, or all be unavailable.
+    bool noBokeh = !hasBokehRequestKey && !hasBokehResultKey && !hasBokehCharacteristicsKey &&
+            !hasAvailableBokehCaps;
+    if (noBokeh) {
+        return;
+    }
+    bool hasBokeh = hasBokehRequestKey && hasBokehResultKey && hasBokehCharacteristicsKey &&
+            hasAvailableBokehCaps;
+    ASSERT_TRUE(hasBokeh);
+
+    // Must have OFF, and must have one of STILL_CAPTURE and CONTINUOUS.
+    ASSERT_TRUE(entry.count == 6 || entry.count == 9);
+    bool hasOffMode = false;
+    bool hasStillCaptureMode = false;
+    bool hasContinuousMode = false;
+    std::vector<AvailableStream> outputStreams;
+    ASSERT_EQ(Status::OK, getAvailableOutputStreams(metadata, outputStreams));
+    for (int i = 0; i < entry.count; i += 3) {
+        int32_t mode = entry.data.i32[i];
+        int32_t maxWidth = entry.data.i32[i+1];
+        int32_t maxHeight = entry.data.i32[i+2];
+        switch (mode) {
+            case ANDROID_CONTROL_BOKEH_MODE_OFF:
+                hasOffMode = true;
+                ASSERT_TRUE(maxWidth == 0 && maxHeight == 0);
+                break;
+            case ANDROID_CONTROL_BOKEH_MODE_STILL_CAPTURE:
+                hasStillCaptureMode = true;
+                break;
+            case ANDROID_CONTROL_BOKEH_MODE_CONTINUOUS:
+                hasContinuousMode = true;
+                break;
+            default:
+                ADD_FAILURE() << "Invalid bokehMode advertised: " << mode;
+                break;
+        }
+
+        if (mode != ANDROID_CONTROL_BOKEH_MODE_OFF) {
+            bool sizeSupported = false;
+            for (const auto& stream : outputStreams) {
+                if ((stream.format == static_cast<int32_t>(PixelFormat::YCBCR_420_888) ||
+                        stream.format == static_cast<int32_t>(PixelFormat::IMPLEMENTATION_DEFINED))
+                        && stream.width == maxWidth && stream.height == maxHeight) {
+                    sizeSupported = true;
+                    break;
+                }
+            }
+            ASSERT_TRUE(sizeSupported);
+        }
+    }
+    ASSERT_TRUE(hasOffMode);
+    ASSERT_TRUE(hasStillCaptureMode || hasContinuousMode);
 }
 
 void CameraHidlTest::verifyMonochromeCharacteristics(const CameraMetadata& chars,
@@ -6148,13 +6311,46 @@
         android::hardware::graphics::allocator::V2_0::IAllocator::getService();
     sp<android::hardware::graphics::allocator::V3_0::IAllocator> allocatorV3 =
         android::hardware::graphics::allocator::V3_0::IAllocator::getService();
+    sp<android::hardware::graphics::allocator::V4_0::IAllocator> allocatorV4 =
+            android::hardware::graphics::allocator::V4_0::IAllocator::getService();
 
+    sp<android::hardware::graphics::mapper::V4_0::IMapper> mapperV4 =
+            android::hardware::graphics::mapper::V4_0::IMapper::getService();
     sp<android::hardware::graphics::mapper::V3_0::IMapper> mapperV3 =
         android::hardware::graphics::mapper::V3_0::IMapper::getService();
     sp<android::hardware::graphics::mapper::V2_0::IMapper> mapper =
         android::hardware::graphics::mapper::V2_0::IMapper::getService();
-    ::android::hardware::hidl_vec<uint32_t> descriptor;
-    if (mapperV3 != nullptr && allocatorV3 != nullptr) {
+    if (mapperV4 != nullptr && allocatorV4 != nullptr) {
+        ::android::hardware::hidl_vec<uint8_t> descriptor;
+        android::hardware::graphics::mapper::V4_0::IMapper::BufferDescriptorInfo descriptorInfo{};
+        descriptorInfo.name = "VtsHalCameraProviderV2_4";
+        descriptorInfo.width = width;
+        descriptorInfo.height = height;
+        descriptorInfo.layerCount = 1;
+        descriptorInfo.format =
+                static_cast<android::hardware::graphics::common::V1_2::PixelFormat>(format);
+        descriptorInfo.usage = usage;
+
+        auto ret = mapperV4->createDescriptor(
+                descriptorInfo, [&descriptor](android::hardware::graphics::mapper::V4_0::Error err,
+                                              ::android::hardware::hidl_vec<uint8_t> desc) {
+                    ASSERT_EQ(err, android::hardware::graphics::mapper::V4_0::Error::NONE);
+                    descriptor = desc;
+                });
+        ASSERT_TRUE(ret.isOk());
+
+        ret = allocatorV4->allocate(
+                descriptor, 1u,
+                [&](android::hardware::graphics::mapper::V4_0::Error err, uint32_t /*stride*/,
+                    const ::android::hardware::hidl_vec<::android::hardware::hidl_handle>&
+                            buffers) {
+                    ASSERT_EQ(android::hardware::graphics::mapper::V4_0::Error::NONE, err);
+                    ASSERT_EQ(buffers.size(), 1u);
+                    *buffer_handle = buffers[0];
+                });
+        ASSERT_TRUE(ret.isOk());
+    } else if (mapperV3 != nullptr && allocatorV3 != nullptr) {
+        ::android::hardware::hidl_vec<uint32_t> descriptor;
         android::hardware::graphics::mapper::V3_0::IMapper::BufferDescriptorInfo descriptorInfo {};
         descriptorInfo.width = width;
         descriptorInfo.height = height;
@@ -6180,6 +6376,7 @@
             });
         ASSERT_TRUE(ret.isOk());
     } else {
+        ::android::hardware::hidl_vec<uint32_t> descriptor;
         ASSERT_NE(mapper.get(), nullptr);
         ASSERT_NE(allocator.get(), nullptr);
         android::hardware::graphics::mapper::V2_0::IMapper::BufferDescriptorInfo descriptorInfo {};
diff --git a/cas/1.0/vts/functional/Android.bp b/cas/1.0/vts/functional/Android.bp
index 622baa5..ab39c0e 100644
--- a/cas/1.0/vts/functional/Android.bp
+++ b/cas/1.0/vts/functional/Android.bp
@@ -29,6 +29,6 @@
     shared_libs: [
         "libbinder",
     ],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
 
diff --git a/cas/1.0/vts/functional/VtsHalCasV1_0TargetTest.cpp b/cas/1.0/vts/functional/VtsHalCasV1_0TargetTest.cpp
index 14b8bbd..0f16de5 100644
--- a/cas/1.0/vts/functional/VtsHalCasV1_0TargetTest.cpp
+++ b/cas/1.0/vts/functional/VtsHalCasV1_0TargetTest.cpp
@@ -16,8 +16,6 @@
 
 #define LOG_TAG "mediacas_hidl_hal_test"
 
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
 #include <android-base/logging.h>
 #include <android/hardware/cas/1.0/ICas.h>
 #include <android/hardware/cas/1.0/ICasListener.h>
@@ -27,8 +25,11 @@
 #include <android/hardware/cas/native/1.0/IDescrambler.h>
 #include <android/hardware/cas/native/1.0/types.h>
 #include <binder/MemoryDealer.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
 #include <hidl/HidlSupport.h>
 #include <hidl/HidlTransportSupport.h>
+#include <hidl/ServiceManagement.h>
 #include <hidl/Status.h>
 #include <hidlmemory/FrameworkUtils.h>
 #include <utils/Condition.h>
@@ -208,29 +209,16 @@
     EXPECT_TRUE(mEventData == eventData);
 }
 
-// Test environment for Cas HIDL HAL.
-class CasHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static CasHidlEnvironment* Instance() {
-        static CasHidlEnvironment* instance = new CasHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<IMediaCasService>(); }
-};
-
-class MediaCasHidlTest : public ::testing::VtsHalHidlTargetTestBase {
-   public:
+class MediaCasHidlTest : public testing::TestWithParam<std::string> {
+  public:
     virtual void SetUp() override {
-        mService = ::testing::VtsHalHidlTargetTestBase::getService<IMediaCasService>(
-            CasHidlEnvironment::Instance()->getServiceName<IMediaCasService>());
+        mService = IMediaCasService::getService(GetParam());
         ASSERT_NE(mService, nullptr);
     }
 
-    sp<IMediaCasService> mService;
+    sp<IMediaCasService> mService = nullptr;
 
-   protected:
+  protected:
     static void description(const std::string& description) {
         RecordProperty("description", description);
     }
@@ -325,7 +313,7 @@
         return ::testing::AssertionFailure();
     }
 
-    uint8_t* ipBuffer = static_cast<uint8_t*>(static_cast<void*>(mem->pointer()));
+    uint8_t* ipBuffer = static_cast<uint8_t*>(static_cast<void*>(mem->unsecurePointer()));
     memcpy(ipBuffer, kInBinaryBuffer, sizeof(kInBinaryBuffer));
 
     // hidlMemory is not to be passed out of scope!
@@ -419,7 +407,7 @@
     return ::testing::AssertionResult(returnVoid.isOk());
 }
 
-TEST_F(MediaCasHidlTest, EnumeratePlugins) {
+TEST_P(MediaCasHidlTest, EnumeratePlugins) {
     description("Test enumerate plugins");
     hidl_vec<HidlCasPluginDescriptor> descriptors;
     EXPECT_TRUE(mService
@@ -440,7 +428,7 @@
     }
 }
 
-TEST_F(MediaCasHidlTest, TestInvalidSystemIdFails) {
+TEST_P(MediaCasHidlTest, TestInvalidSystemIdFails) {
     description("Test failure for invalid system ID");
     sp<MediaCasListener> casListener = new MediaCasListener();
 
@@ -458,7 +446,7 @@
     EXPECT_EQ(descramblerBase, nullptr);
 }
 
-TEST_F(MediaCasHidlTest, TestClearKeyPluginInstalled) {
+TEST_P(MediaCasHidlTest, TestClearKeyPluginInstalled) {
     description("Test if ClearKey plugin is installed");
     hidl_vec<HidlCasPluginDescriptor> descriptors;
     EXPECT_TRUE(mService
@@ -480,7 +468,7 @@
     ASSERT_TRUE(false) << "ClearKey plugin not installed";
 }
 
-TEST_F(MediaCasHidlTest, TestClearKeyApis) {
+TEST_P(MediaCasHidlTest, TestClearKeyApis) {
     description("Test that valid call sequences succeed");
 
     ASSERT_TRUE(createCasPlugin(CLEAR_KEY_SYSTEM_ID));
@@ -568,7 +556,7 @@
     EXPECT_EQ(Status::OK, descrambleStatus);
 
     ASSERT_NE(nullptr, dataMemory.get());
-    uint8_t* opBuffer = static_cast<uint8_t*>(static_cast<void*>(dataMemory->pointer()));
+    uint8_t* opBuffer = static_cast<uint8_t*>(static_cast<void*>(dataMemory->unsecurePointer()));
 
     int compareResult =
         memcmp(static_cast<const void*>(opBuffer), static_cast<const void*>(kOutRefBinaryBuffer),
@@ -584,7 +572,7 @@
     EXPECT_EQ(Status::OK, returnStatus);
 }
 
-TEST_F(MediaCasHidlTest, TestClearKeySessionClosedAfterRelease) {
+TEST_P(MediaCasHidlTest, TestClearKeySessionClosedAfterRelease) {
     description("Test that all sessions are closed after a MediaCas object is released");
 
     ASSERT_TRUE(createCasPlugin(CLEAR_KEY_SYSTEM_ID));
@@ -611,7 +599,7 @@
     EXPECT_EQ(Status::ERROR_CAS_SESSION_NOT_OPENED, returnStatus);
 }
 
-TEST_F(MediaCasHidlTest, TestClearKeyErrors) {
+TEST_P(MediaCasHidlTest, TestClearKeyErrors) {
     description("Test that invalid call sequences fail with expected error codes");
 
     ASSERT_TRUE(createCasPlugin(CLEAR_KEY_SYSTEM_ID));
@@ -700,7 +688,7 @@
     EXPECT_FALSE(mDescramblerBase->requiresSecureDecoderComponent("bad"));
 }
 
-TEST_F(MediaCasHidlTest, TestClearKeyOobFails) {
+TEST_P(MediaCasHidlTest, TestClearKeyOobFails) {
     description("Test that oob descramble request fails with expected error");
 
     ASSERT_TRUE(createCasPlugin(CLEAR_KEY_SYSTEM_ID));
@@ -849,11 +837,7 @@
 
 }  // anonymous namespace
 
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(CasHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    CasHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    LOG(INFO) << "Test result = " << status;
-    return status;
-}
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, MediaCasHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IMediaCasService::descriptor)),
+        android::hardware::PrintInstanceNameToString);
\ No newline at end of file
diff --git a/cas/1.1/vts/functional/Android.bp b/cas/1.1/vts/functional/Android.bp
index 8afd19a..9e8eb52 100644
--- a/cas/1.1/vts/functional/Android.bp
+++ b/cas/1.1/vts/functional/Android.bp
@@ -30,6 +30,6 @@
     shared_libs: [
         "libbinder",
     ],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
 
diff --git a/cas/1.1/vts/functional/VtsHalCasV1_1TargetTest.cpp b/cas/1.1/vts/functional/VtsHalCasV1_1TargetTest.cpp
index 88f1fb0..7e5a61a 100644
--- a/cas/1.1/vts/functional/VtsHalCasV1_1TargetTest.cpp
+++ b/cas/1.1/vts/functional/VtsHalCasV1_1TargetTest.cpp
@@ -27,8 +27,11 @@
 #include <android/hardware/cas/native/1.0/IDescrambler.h>
 #include <android/hardware/cas/native/1.0/types.h>
 #include <binder/MemoryDealer.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
 #include <hidl/HidlSupport.h>
 #include <hidl/HidlTransportSupport.h>
+#include <hidl/ServiceManagement.h>
 #include <hidl/Status.h>
 #include <hidlmemory/FrameworkUtils.h>
 #include <utils/Condition.h>
@@ -251,27 +254,14 @@
     EXPECT_TRUE(mEventData == eventData);
 }
 
-// Test environment for Cas HIDL HAL.
-class CasHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-  public:
-    // get the test environment singleton
-    static CasHidlEnvironment* Instance() {
-        static CasHidlEnvironment* instance = new CasHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<IMediaCasService>(); }
-};
-
-class MediaCasHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class MediaCasHidlTest : public testing::TestWithParam<std::string> {
   public:
     virtual void SetUp() override {
-        mService = ::testing::VtsHalHidlTargetTestBase::getService<IMediaCasService>(
-                CasHidlEnvironment::Instance()->getServiceName<IMediaCasService>());
+        mService = IMediaCasService::getService(GetParam());
         ASSERT_NE(mService, nullptr);
     }
 
-    sp<IMediaCasService> mService;
+    sp<IMediaCasService> mService = nullptr;
 
   protected:
     static void description(const std::string& description) {
@@ -366,7 +356,7 @@
         return ::testing::AssertionFailure();
     }
 
-    uint8_t* ipBuffer = static_cast<uint8_t*>(static_cast<void*>(mem->pointer()));
+    uint8_t* ipBuffer = static_cast<uint8_t*>(static_cast<void*>(mem->unsecurePointer()));
     memcpy(ipBuffer, kInBinaryBuffer, sizeof(kInBinaryBuffer));
 
     // hidlMemory is not to be passed out of scope!
@@ -453,7 +443,7 @@
     return ::testing::AssertionResult(returnVoid.isOk());
 }
 
-TEST_F(MediaCasHidlTest, TestClearKeyApisWithSession) {
+TEST_P(MediaCasHidlTest, TestClearKeyApisWithSession) {
     description("Test that valid call sequences with SessionEvent send and receive");
 
     ASSERT_TRUE(createCasPlugin(CLEAR_KEY_SYSTEM_ID));
@@ -543,7 +533,7 @@
     EXPECT_EQ(Status::OK, descrambleStatus);
 
     ASSERT_NE(nullptr, dataMemory.get());
-    uint8_t* opBuffer = static_cast<uint8_t*>(static_cast<void*>(dataMemory->pointer()));
+    uint8_t* opBuffer = static_cast<uint8_t*>(static_cast<void*>(dataMemory->unsecurePointer()));
 
     int compareResult =
             memcmp(static_cast<const void*>(opBuffer),
@@ -561,11 +551,7 @@
 
 }  // anonymous namespace
 
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(CasHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    CasHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    LOG(INFO) << "Test result = " << status;
-    return status;
-}
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, MediaCasHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IMediaCasService::descriptor)),
+        android::hardware::PrintInstanceNameToString);
diff --git a/cas/1.2/types.hal b/cas/1.2/types.hal
index 40c06cf..06199cd 100644
--- a/cas/1.2/types.hal
+++ b/cas/1.2/types.hal
@@ -45,6 +45,10 @@
      *  ERROR_CAS_BLACKOUT is used to report geographical blackout.
      */
     ERROR_CAS_BLACKOUT,
+    /**
+     * ERROR_CAS_REBOOTING is used to report CAS is during rebooting.
+     */
+    ERROR_CAS_REBOOTING,
 };
 
 /**
diff --git a/compatibility_matrices/compatibility_matrix.current.xml b/compatibility_matrices/compatibility_matrix.current.xml
index aeb11c4..fb8d395 100644
--- a/compatibility_matrices/compatibility_matrix.current.xml
+++ b/compatibility_matrices/compatibility_matrix.current.xml
@@ -123,7 +123,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.cas</name>
-        <version>1.1</version>
+        <version>1.1-2</version>
         <interface>
             <name>IMediaCasService</name>
             <instance>default</instance>
@@ -197,8 +197,8 @@
     </hal>
     <hal format="hidl" optional="false">
         <name>android.hardware.graphics.allocator</name>
-        <version>2.0</version>
         <version>3.0</version>
+        <version>4.0</version>
         <interface>
             <name>IAllocator</name>
             <instance>default</instance>
@@ -206,7 +206,7 @@
     </hal>
     <hal format="hidl" optional="false">
         <name>android.hardware.graphics.composer</name>
-        <version>2.1-3</version>
+        <version>2.1-4</version>
         <interface>
             <name>IComposer</name>
             <instance>default</instance>
@@ -214,8 +214,8 @@
     </hal>
     <hal format="hidl" optional="false">
         <name>android.hardware.graphics.mapper</name>
-        <version>2.1</version>
         <version>3.0</version>
+        <version>4.0</version>
         <interface>
             <name>IMapper</name>
             <instance>default</instance>
@@ -500,7 +500,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.wifi</name>
-        <version>1.0-3</version>
+        <version>1.0-4</version>
         <interface>
             <name>IWifi</name>
             <instance>default</instance>
@@ -516,7 +516,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.wifi.supplicant</name>
-        <version>1.0-2</version>
+        <version>1.0-3</version>
         <interface>
             <name>ISupplicant</name>
             <instance>default</instance>
diff --git a/current.txt b/current.txt
index b398621..26de8ff 100644
--- a/current.txt
+++ b/current.txt
@@ -572,6 +572,7 @@
 cfa81f229b69f9011c58f48264fcb552447430fe68610eac514e811e65bc306a android.hardware.wifi.supplicant@1.2::types
 
 # ABI preserving changes to HALs during Android R
+2410dd02d67786a732d36e80b0f8ccf55086604ef37f9838e2013ff2c571e404 android.hardware.camera.device@3.5::types
 b69a7615c508acf5c5201efd1bfa3262167874fc3594e2db5a3ff93addd8ac75 android.hardware.keymaster@4.0::IKeymasterDevice
 eb2fa0c883c2185d514be0b84c179b283753ef0c1b77b45b4f359bd23bba8b75 android.hardware.neuralnetworks@1.0::IPreparedModel
 f1109cbb10297b7429a11fab42afa912710b303c9bf20bd5cdb8bd57b9c84186 android.hardware.neuralnetworks@1.0::types
@@ -586,12 +587,27 @@
 # HALs released in Android R
 07d0a252b2d8fa35887908a996ba395cf392968395fc30afab791f46e0c22a52 android.hardware.boot@1.1::IBootControl
 74049a402be913963edfdd80828a53736570e9d8124a1bf18166b6ed46a6b0ab android.hardware.boot@1.1::types
+c1aa508d00b66ed5feefea398fd5edf28fa651ac89773adad7dfda4e0a73a952 android.hardware.cas@1.2::ICas
+9811f867def49b420d8c707f7e38d3bdd64f835244e1d2a5e9762ab9835672dc android.hardware.cas@1.2::ICasListener
+f18695dd36ee205640b8326a17453858a7b4596653aaa6ef0016b0aef1bd4dac android.hardware.cas@1.2::IMediaCasService
+4d85e814f94949dae4dc6cb82bbd7d6bb24ffafda6ddb2eac928d2a4fc2e21ce android.hardware.cas@1.2::types
 ce8dbe76eb9ee94b46ef98f725be992e760a5751073d4f4912484026541371f3 android.hardware.health@2.1::IHealth
 26f04510a0b57aba5167c5c0a7c2f077c2acbb98b81902a072517829fd9fd67f android.hardware.health@2.1::IHealthInfoCallback
 db47f4ceceb1f06c656f39caa70c557b0f8471ef59fd58611bea667ffca20101 android.hardware.health@2.1::types
-34515afa2bb792d3c6d8495a5f5d907d179c8507ca5e55c10050d02ae1d516ef android.hardware.neuralnetworks@1.3::IDevice
-b74fe72cfe438f50e772e6a307657ff449d5bde83c15dd1f140ff2edbe73499c android.hardware.neuralnetworks@1.3::types
-d3636ff9d5fef59f59f678887209156b2608d29f676fb1e600fe33b7e57a8a61 android.hardware.radio@1.5::types
+c228aaa27f66c48e147159a4f4996c5273191fece1b08de31bd171c61334855e android.hardware.keymaster@4.1::IKeymasterDevice
+adb0efdf1462e9b2e742c0dcadd598666aac551f178be06e755bfcdf5797abd0 android.hardware.keymaster@4.1::IOperation
+7a04ea5595ed418ca3e91c28b8bd7353dd988be9be7b0c8c9e64fb4b77bd4523 android.hardware.keymaster@4.1::types
+9e59fffceed0dd72a9799e04505db5f777bbbea1af0695ba4107ef6d967c6fda android.hardware.neuralnetworks@1.3::IDevice
+4a6c3b3556da951b4def21ba579a227c022980fe4465df6cdfbe20628fa75f5a android.hardware.neuralnetworks@1.3::IPreparedModel
+94e803236398bed1febb11cc21051bc42ec003700139b099d6c479e02a7ca3c3 android.hardware.neuralnetworks@1.3::IPreparedModelCallback
+c511b1427b1c3f76af90967bbddaaf250db983a8d3abb9ff189fb5a807cf3d4d android.hardware.neuralnetworks@1.3::types
+3e01d4446cd69fd1c48f8572efd97487bc179564b32bd795800b97bbe10be37b android.hardware.wifi@1.4::IWifi
+a64467bae843569f0d465c5be7f0c7a5b987985b55a3ef4794dd5afc68538650 android.hardware.wifi.supplicant@1.3::ISupplicant
+44445b8a03d7b9e68b2fbd954672c18a8fce9e32851b0692f4f4ab3407f86ecb android.hardware.wifi.supplicant@1.3::ISupplicantStaIface
+619fc9839ec6e369cfa9b28e3e9412e6885720ff8f9b5750c1b6ffb905120391 android.hardware.wifi.supplicant@1.3::ISupplicantStaIfaceCallback
+c9273429fcf98d797d3bb07fdba6f1be95bf960f9255cde169fd1ca4db85f856 android.hardware.wifi.supplicant@1.3::ISupplicantStaNetwork
+9b0a3ab6f4f74b971ed094426d8a443e29b512ff03e1ab50c07156396cdb2483 android.hardware.wifi.supplicant@1.3::types
+ba759fab7dd4cd621b492ef8f44312d4a716af786786f404d1477cc8cea6f392 android.hardware.radio@1.5::types
 c8e81d912827a5d49b2ddcdc4eb4556c5d231a899a1dca879309e04210daa4a0 android.hardware.radio@1.5::IRadio
 a62a93faf173b14a6175b683ebf61ffa568dc61f81e369d2dce7b1265e86cf2f android.hardware.radio@1.5::IRadioIndication
 260ce05806d753d728f844d405e832179ed7d9b65986ec18fef3d21cf7285587 android.hardware.radio@1.5::IRadioResponse
diff --git a/drm/TEST_MAPPING b/drm/TEST_MAPPING
new file mode 100644
index 0000000..cff6819
--- /dev/null
+++ b/drm/TEST_MAPPING
@@ -0,0 +1,8 @@
+{
+  "imports": [
+    // gts and cts filters
+    {
+      "path": "frameworks/av/drm/libmediadrm"
+    }
+  ]
+}
diff --git a/gnss/1.1/vts/functional/Android.bp b/gnss/1.1/vts/functional/Android.bp
index cc34290..bdd02d2 100644
--- a/gnss/1.1/vts/functional/Android.bp
+++ b/gnss/1.1/vts/functional/Android.bp
@@ -30,5 +30,5 @@
     shared_libs: [
         "android.hardware.gnss.measurement_corrections@1.0",
     ],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/gnss/1.1/vts/functional/VtsHalGnssV1_1TargetTest.cpp b/gnss/1.1/vts/functional/VtsHalGnssV1_1TargetTest.cpp
index ca9eef4..4a0a7f9 100644
--- a/gnss/1.1/vts/functional/VtsHalGnssV1_1TargetTest.cpp
+++ b/gnss/1.1/vts/functional/VtsHalGnssV1_1TargetTest.cpp
@@ -15,15 +15,15 @@
  */
 #define LOG_TAG "VtsHalGnssV1_1TargetTest"
 
-#include <VtsHalHidlTargetTestBase.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "gnss_hal_test.h"
 
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(GnssHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    GnssHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    ALOGI("Test result = %d", status);
-    return status;
-}
+using android::hardware::gnss::V1_1::IGnss;
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GnssHalTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IGnss::descriptor)),
+        android::hardware::PrintInstanceNameToString);
\ No newline at end of file
diff --git a/gnss/1.1/vts/functional/gnss_hal_test.cpp b/gnss/1.1/vts/functional/gnss_hal_test.cpp
index f3b376e..2c8a7b1 100644
--- a/gnss/1.1/vts/functional/gnss_hal_test.cpp
+++ b/gnss/1.1/vts/functional/gnss_hal_test.cpp
@@ -17,6 +17,8 @@
 #define LOG_TAG "GnssHalTest"
 
 #include <android/hidl/manager/1.2/IServiceManager.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
 #include <hidl/ServiceManagement.h>
 
 #include <gnss_hal_test.h>
@@ -28,18 +30,8 @@
 
 using ::android::hardware::gnss::common::Utils;
 
-// Implementations for the main test class for GNSS HAL
-GnssHalTest::GnssHalTest()
-    : info_called_count_(0),
-      capabilities_called_count_(0),
-      location_called_count_(0),
-      name_called_count_(0),
-      notify_count_(0) {}
-
 void GnssHalTest::SetUp() {
-    gnss_hal_ = ::testing::VtsHalHidlTargetTestBase::getService<IGnss>(
-        GnssHidlEnvironment::Instance()->getServiceName<IGnss>());
-    list_gnss_sv_status_.clear();
+    gnss_hal_ = IGnss::getService(GetParam());
     ASSERT_NE(gnss_hal_, nullptr);
 
     SetUpGnssCallback();
@@ -48,14 +40,15 @@
 void GnssHalTest::TearDown() {
     if (gnss_hal_ != nullptr) {
         gnss_hal_->cleanup();
+        gnss_hal_ = nullptr;
     }
-    if (notify_count_ > 0) {
-        ALOGW("%d unprocessed callbacks discarded", notify_count_);
-    }
+
+    // Set to nullptr to destruct the callback event queues and warn of any unprocessed events.
+    gnss_cb_ = nullptr;
 }
 
 void GnssHalTest::SetUpGnssCallback() {
-    gnss_cb_ = new GnssCallback(*this);
+    gnss_cb_ = new GnssCallback();
     ASSERT_NE(gnss_cb_, nullptr);
 
     auto result = gnss_hal_->setCallback_1_1(gnss_cb_);
@@ -69,13 +62,13 @@
     /*
      * All capabilities, name and systemInfo callbacks should trigger
      */
-    EXPECT_EQ(std::cv_status::no_timeout, wait(TIMEOUT_SEC));
-    EXPECT_EQ(std::cv_status::no_timeout, wait(TIMEOUT_SEC));
-    EXPECT_EQ(std::cv_status::no_timeout, wait(TIMEOUT_SEC));
+    EXPECT_TRUE(gnss_cb_->capabilities_cbq_.retrieve(gnss_cb_->last_capabilities_, TIMEOUT_SEC));
+    EXPECT_TRUE(gnss_cb_->info_cbq_.retrieve(gnss_cb_->last_info_, TIMEOUT_SEC));
+    EXPECT_TRUE(gnss_cb_->name_cbq_.retrieve(gnss_cb_->last_name_, TIMEOUT_SEC));
 
-    EXPECT_EQ(capabilities_called_count_, 1);
-    EXPECT_EQ(info_called_count_, 1);
-    EXPECT_EQ(name_called_count_, 1);
+    EXPECT_EQ(gnss_cb_->capabilities_cbq_.calledCount(), 1);
+    EXPECT_EQ(gnss_cb_->info_cbq_.calledCount(), 1);
+    EXPECT_EQ(gnss_cb_->name_cbq_.calledCount(), 1);
 }
 
 void GnssHalTest::StopAndClearLocations() {
@@ -89,9 +82,9 @@
      * the last reply for final startup messages to arrive (esp. system
      * info.)
      */
-    while (wait(TIMEOUT_SEC) == std::cv_status::no_timeout) {
+    while (gnss_cb_->location_cbq_.retrieve(gnss_cb_->last_location_, TIMEOUT_SEC)) {
     }
-    location_called_count_ = 0;
+    gnss_cb_->location_cbq_.reset();
 }
 
 void GnssHalTest::SetPositionMode(const int min_interval_msec, const bool low_power_mode) {
@@ -118,19 +111,22 @@
      */
     const int kFirstGnssLocationTimeoutSeconds = 75;
 
-    wait(kFirstGnssLocationTimeoutSeconds);
-    EXPECT_EQ(location_called_count_, 1);
+    EXPECT_TRUE(gnss_cb_->location_cbq_.retrieve(gnss_cb_->last_location_,
+                                                 kFirstGnssLocationTimeoutSeconds));
+    int locationCalledCount = gnss_cb_->location_cbq_.calledCount();
+    EXPECT_EQ(locationCalledCount, 1);
 
-    if (location_called_count_ > 0) {
+    if (locationCalledCount > 0) {
         // don't require speed on first fix
-        CheckLocation(last_location_, false);
+        CheckLocation(gnss_cb_->last_location_, false);
         return true;
     }
     return false;
 }
 
 void GnssHalTest::CheckLocation(GnssLocation& location, bool check_speed) {
-    bool check_more_accuracies = (info_called_count_ > 0 && last_info_.yearOfHw >= 2017);
+    const bool check_more_accuracies =
+            (gnss_cb_->info_cbq_.calledCount() > 0 && gnss_cb_->last_info_.yearOfHw >= 2017);
 
     Utils::checkLocation(location, check_speed, check_more_accuracies);
 }
@@ -145,12 +141,14 @@
     EXPECT_TRUE(StartAndCheckFirstLocation());
 
     for (int i = 1; i < count; i++) {
-        EXPECT_EQ(std::cv_status::no_timeout, wait(kLocationTimeoutSubsequentSec));
-        EXPECT_EQ(location_called_count_, i + 1);
+        EXPECT_TRUE(gnss_cb_->location_cbq_.retrieve(gnss_cb_->last_location_,
+                                                     kLocationTimeoutSubsequentSec));
+        int locationCalledCount = gnss_cb_->location_cbq_.calledCount();
+        EXPECT_EQ(locationCalledCount, i + 1);
         // Don't cause confusion by checking details if no location yet
-        if (location_called_count_ > 0) {
+        if (locationCalledCount > 0) {
             // Should be more than 1 location by now, but if not, still don't check first fix speed
-            CheckLocation(last_location_, location_called_count_ > 1);
+            CheckLocation(gnss_cb_->last_location_, locationCalledCount > 1);
         }
     }
 }
@@ -177,60 +175,41 @@
     return hasGnssHalVersion_1_1 && !hasGnssHalVersion_2_0;
 }
 
-void GnssHalTest::notify() {
-    std::unique_lock<std::mutex> lock(mtx_);
-    notify_count_++;
-    cv_.notify_one();
-}
-
-std::cv_status GnssHalTest::wait(int timeout_seconds) {
-    std::unique_lock<std::mutex> lock(mtx_);
-
-    auto status = std::cv_status::no_timeout;
-    while (notify_count_ == 0) {
-        status = cv_.wait_for(lock, std::chrono::seconds(timeout_seconds));
-        if (status == std::cv_status::timeout) return status;
-    }
-    notify_count_--;
-    return status;
-}
+GnssHalTest::GnssCallback::GnssCallback()
+    : info_cbq_("system_info"),
+      name_cbq_("name"),
+      capabilities_cbq_("capabilities"),
+      location_cbq_("location"),
+      sv_status_cbq_("sv_status") {}
 
 Return<void> GnssHalTest::GnssCallback::gnssSetSystemInfoCb(
     const IGnssCallback::GnssSystemInfo& info) {
     ALOGI("Info received, year %d", info.yearOfHw);
-    parent_.info_called_count_++;
-    parent_.last_info_ = info;
-    parent_.notify();
+    info_cbq_.store(info);
     return Void();
 }
 
 Return<void> GnssHalTest::GnssCallback::gnssSetCapabilitesCb(uint32_t capabilities) {
     ALOGI("Capabilities received %d", capabilities);
-    parent_.capabilities_called_count_++;
-    parent_.last_capabilities_ = capabilities;
-    parent_.notify();
+    capabilities_cbq_.store(capabilities);
     return Void();
 }
 
 Return<void> GnssHalTest::GnssCallback::gnssNameCb(const android::hardware::hidl_string& name) {
     ALOGI("Name received: %s", name.c_str());
-    parent_.name_called_count_++;
-    parent_.last_name_ = name;
-    parent_.notify();
+    name_cbq_.store(name);
     return Void();
 }
 
 Return<void> GnssHalTest::GnssCallback::gnssLocationCb(const GnssLocation& location) {
     ALOGI("Location received");
-    parent_.location_called_count_++;
-    parent_.last_location_ = location;
-    parent_.notify();
+    location_cbq_.store(location);
     return Void();
 }
 
 Return<void> GnssHalTest::GnssCallback::gnssSvStatusCb(
     const IGnssCallback::GnssSvStatus& svStatus) {
     ALOGI("GnssSvStatus received");
-    parent_.list_gnss_sv_status_.emplace_back(svStatus);
+    sv_status_cbq_.store(svStatus);
     return Void();
 }
diff --git a/gnss/1.1/vts/functional/gnss_hal_test.h b/gnss/1.1/vts/functional/gnss_hal_test.h
index 84a9f84..169cd62 100644
--- a/gnss/1.1/vts/functional/gnss_hal_test.h
+++ b/gnss/1.1/vts/functional/gnss_hal_test.h
@@ -19,46 +19,26 @@
 
 #include <android/hardware/gnss/1.1/IGnss.h>
 
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
-
-#include <condition_variable>
-#include <list>
-#include <mutex>
+#include <gtest/gtest.h>
+#include "GnssCallbackEventQueue.h"
 
 using android::hardware::Return;
 using android::hardware::Void;
 
 using android::hardware::gnss::V1_0::GnssLocation;
 
+using android::hardware::gnss::common::GnssCallbackEventQueue;
+using android::hardware::gnss::V1_0::GnssLocationFlags;
 using android::hardware::gnss::V1_1::IGnss;
 using android::hardware::gnss::V1_1::IGnssCallback;
-using android::hardware::gnss::V1_0::GnssLocationFlags;
 
 using android::sp;
 
 #define TIMEOUT_SEC 2  // for basic commands/responses
 
-// Test environment for GNSS HIDL HAL.
-class GnssHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static GnssHidlEnvironment* Instance() {
-        static GnssHidlEnvironment* instance = new GnssHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<IGnss>(); }
-
-   private:
-    GnssHidlEnvironment() {}
-};
-
 // The main test class for GNSS HAL.
-class GnssHalTest : public ::testing::VtsHalHidlTargetTestBase {
-   public:
-    GnssHalTest();
-
+class GnssHalTest : public testing::TestWithParam<std::string> {
+  public:
     virtual void SetUp() override;
 
     virtual void TearDown() override;
@@ -72,32 +52,40 @@
     /* Callback class for data & Event. */
     class GnssCallback : public IGnssCallback {
        public:
-        GnssHalTest& parent_;
+         IGnssCallback::GnssSystemInfo last_info_;
+         android::hardware::hidl_string last_name_;
+         uint32_t last_capabilities_;
+         GnssLocation last_location_;
 
-        GnssCallback(GnssHalTest& parent) : parent_(parent){};
+         GnssCallbackEventQueue<IGnssCallback::GnssSystemInfo> info_cbq_;
+         GnssCallbackEventQueue<android::hardware::hidl_string> name_cbq_;
+         GnssCallbackEventQueue<uint32_t> capabilities_cbq_;
+         GnssCallbackEventQueue<GnssLocation> location_cbq_;
+         GnssCallbackEventQueue<IGnssCallback::GnssSvStatus> sv_status_cbq_;
 
-        virtual ~GnssCallback() = default;
+         GnssCallback();
+         virtual ~GnssCallback() = default;
 
-        // Dummy callback handlers
-        Return<void> gnssStatusCb(const IGnssCallback::GnssStatusValue /* status */) override {
-            return Void();
-        }
-        Return<void> gnssNmeaCb(int64_t /* timestamp */,
-                                const android::hardware::hidl_string& /* nmea */) override {
-            return Void();
-        }
-        Return<void> gnssAcquireWakelockCb() override { return Void(); }
-        Return<void> gnssReleaseWakelockCb() override { return Void(); }
-        Return<void> gnssRequestLocationCb(bool /* independentFromGnss */) override {
-            return Void();
-        }
-        Return<void> gnssRequestTimeCb() override { return Void(); }
-        // Actual (test) callback handlers
-        Return<void> gnssNameCb(const android::hardware::hidl_string& name) override;
-        Return<void> gnssLocationCb(const GnssLocation& location) override;
-        Return<void> gnssSetCapabilitesCb(uint32_t capabilities) override;
-        Return<void> gnssSetSystemInfoCb(const IGnssCallback::GnssSystemInfo& info) override;
-        Return<void> gnssSvStatusCb(const IGnssCallback::GnssSvStatus& svStatus) override;
+         // Dummy callback handlers
+         Return<void> gnssStatusCb(const IGnssCallback::GnssStatusValue /* status */) override {
+             return Void();
+         }
+         Return<void> gnssNmeaCb(int64_t /* timestamp */,
+                                 const android::hardware::hidl_string& /* nmea */) override {
+             return Void();
+         }
+         Return<void> gnssAcquireWakelockCb() override { return Void(); }
+         Return<void> gnssReleaseWakelockCb() override { return Void(); }
+         Return<void> gnssRequestLocationCb(bool /* independentFromGnss */) override {
+             return Void();
+         }
+         Return<void> gnssRequestTimeCb() override { return Void(); }
+         // Actual (test) callback handlers
+         Return<void> gnssNameCb(const android::hardware::hidl_string& name) override;
+         Return<void> gnssLocationCb(const GnssLocation& location) override;
+         Return<void> gnssSetCapabilitesCb(uint32_t capabilities) override;
+         Return<void> gnssSetSystemInfoCb(const IGnssCallback::GnssSystemInfo& info) override;
+         Return<void> gnssSvStatusCb(const IGnssCallback::GnssSvStatus& svStatus) override;
     };
 
     /*
@@ -152,26 +140,7 @@
     bool IsGnssHalVersion_1_1() const;
 
     sp<IGnss> gnss_hal_;         // GNSS HAL to call into
-    sp<IGnssCallback> gnss_cb_;  // Primary callback interface
-
-    /* Count of calls to set the following items, and the latest item (used by
-     * test.)
-     */
-    int info_called_count_;
-    IGnssCallback::GnssSystemInfo last_info_;
-    uint32_t last_capabilities_;
-    int capabilities_called_count_;
-    int location_called_count_;
-    GnssLocation last_location_;
-    list<IGnssCallback::GnssSvStatus> list_gnss_sv_status_;
-
-    int name_called_count_;
-    android::hardware::hidl_string last_name_;
-
-   private:
-    std::mutex mtx_;
-    std::condition_variable cv_;
-    int notify_count_;
+    sp<GnssCallback> gnss_cb_;   // Primary callback interface
 };
 
 #endif  // GNSS_HAL_TEST_H_
diff --git a/gnss/1.1/vts/functional/gnss_hal_test_cases.cpp b/gnss/1.1/vts/functional/gnss_hal_test_cases.cpp
index ee236ba..79da84a 100644
--- a/gnss/1.1/vts/functional/gnss_hal_test_cases.cpp
+++ b/gnss/1.1/vts/functional/gnss_hal_test_cases.cpp
@@ -18,9 +18,8 @@
 
 #include <gnss_hal_test.h>
 
-#include <VtsHalHidlTargetTestBase.h>
-
 #include <android/hardware/gnss/1.1/IGnssConfiguration.h>
+#include <gtest/gtest.h>
 
 using android::hardware::hidl_vec;
 
@@ -39,18 +38,18 @@
  *
  * Empty test fixture to verify basic Setup & Teardown
  */
-TEST_F(GnssHalTest, SetupTeardownCreateCleanup) {}
+TEST_P(GnssHalTest, SetupTeardownCreateCleanup) {}
 
 /*
  * TestGnssMeasurementCallback:
  * Gets the GnssMeasurementExtension and verify that it returns an actual extension.
  */
-TEST_F(GnssHalTest, TestGnssMeasurementCallback) {
+TEST_P(GnssHalTest, TestGnssMeasurementCallback) {
     auto gnssMeasurement_1_1 = gnss_hal_->getExtensionGnssMeasurement_1_1();
     ASSERT_TRUE(gnssMeasurement_1_1.isOk());
     auto gnssMeasurement_1_0 = gnss_hal_->getExtensionGnssMeasurement();
     ASSERT_TRUE(gnssMeasurement_1_0.isOk());
-    if (last_capabilities_ & IGnssCallback::Capabilities::MEASUREMENTS) {
+    if (gnss_cb_->last_capabilities_ & IGnssCallback::Capabilities::MEASUREMENTS) {
         sp<IGnssMeasurement_1_1> iGnssMeas_1_1 = gnssMeasurement_1_1;
         sp<IGnssMeasurement_1_0> iGnssMeas_1_0 = gnssMeasurement_1_0;
         // At least one interface must be non-null.
@@ -65,7 +64,7 @@
  * NO_LOCATION_PERIOD_SEC and verfiy that no location is received. Also perform validity checks on
  * each received location.
  */
-TEST_F(GnssHalTest, GetLocationLowPower) {
+TEST_P(GnssHalTest, GetLocationLowPower) {
     if (!IsGnssHalVersion_1_1()) {
         ALOGI("Test GetLocationLowPower skipped. GNSS HAL version is greater than 1.1.");
         return;
@@ -78,8 +77,10 @@
     const bool kLowPowerMode = true;
 
     // Warmup period - VTS doesn't have AGPS access via GnssLocationProvider
-    StartAndCheckLocations(5);
+    gnss_cb_->location_cbq_.reset();
+    StartAndCheckLocations(kLocationsToCheck);
     StopAndClearLocations();
+    gnss_cb_->location_cbq_.reset();
 
     // Start of Low Power Mode test
     SetPositionMode(kMinIntervalMsec, kLowPowerMode);
@@ -93,24 +94,26 @@
         // Verify that kMinIntervalMsec is respected by waiting kNoLocationPeriodSec and
         // ensure that no location is received yet
 
-        wait(kNoLocationPeriodSec);
+        gnss_cb_->location_cbq_.retrieve(gnss_cb_->last_location_, kNoLocationPeriodSec);
+        const int location_called_count = gnss_cb_->location_cbq_.calledCount();
         // Tolerate (ignore) one extra location right after the first one
         // to handle startup edge case scheduling limitations in some implementations
-        if ((i == 1) && (location_called_count_ == 2)) {
-            CheckLocation(last_location_, true);
+        if ((i == 1) && (location_called_count == 2)) {
+            CheckLocation(gnss_cb_->last_location_, true);
             continue;  // restart the quiet wait period after this too-fast location
         }
-        EXPECT_LE(location_called_count_, i);
-        if (location_called_count_ != i) {
+        EXPECT_LE(location_called_count, i);
+        if (location_called_count != i) {
             ALOGW("GetLocationLowPower test - not enough locations received. %d vs. %d expected ",
-                  location_called_count_, i);
+                  location_called_count, i);
         }
 
-        if (std::cv_status::no_timeout !=
-            wait(kLocationTimeoutSubsequentSec - kNoLocationPeriodSec)) {
+        if (!gnss_cb_->location_cbq_.retrieve(
+                    gnss_cb_->last_location_,
+                    kLocationTimeoutSubsequentSec - kNoLocationPeriodSec)) {
             ALOGW("GetLocationLowPower test - timeout awaiting location %d", i);
         } else {
-            CheckLocation(last_location_, true);
+            CheckLocation(gnss_cb_->last_location_, true);
         }
     }
 
@@ -127,7 +130,8 @@
  */
 
 IGnssConfiguration::BlacklistedSource FindStrongFrequentNonGpsSource(
-    const list<IGnssCallback::GnssSvStatus> list_gnss_sv_status, const int min_observations) {
+        const std::list<IGnssCallback::GnssSvStatus> list_gnss_sv_status,
+        const int min_observations) {
     struct ComparableBlacklistedSource {
         IGnssConfiguration::BlacklistedSource id;
 
@@ -213,7 +217,7 @@
  * 5b) Retry a few times, in case GNSS search strategy takes a while to reacquire even the
  * formerly strongest satellite
  */
-TEST_F(GnssHalTest, BlacklistIndividualSatellites) {
+TEST_P(GnssHalTest, BlacklistIndividualSatellites) {
     if (!IsGnssHalVersion_1_1()) {
         ALOGI("Test BlacklistIndividualSatellites skipped. GNSS HAL version is greater than 1.1.");
         return;
@@ -222,12 +226,15 @@
     const int kLocationsToAwait = 3;
     const int kRetriesToUnBlacklist = 10;
 
+    gnss_cb_->location_cbq_.reset();
     StartAndCheckLocations(kLocationsToAwait);
+    int location_called_count = gnss_cb_->location_cbq_.calledCount();
 
     // Tolerate 1 less sv status to handle edge cases in reporting.
-    EXPECT_GE((int)list_gnss_sv_status_.size() + 1, kLocationsToAwait);
-    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations (%d received)",
-          (int)list_gnss_sv_status_.size(), kLocationsToAwait, location_called_count_);
+    int sv_status_cbq_size = gnss_cb_->sv_status_cbq_.size();
+    EXPECT_GE(sv_status_cbq_size + 1, kLocationsToAwait);
+    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations (%d received)", sv_status_cbq_size,
+          kLocationsToAwait, location_called_count);
 
     /*
      * Identify strongest SV seen at least kLocationsToAwait -1 times
@@ -235,8 +242,14 @@
      * observability (one epoch RF null)
      */
 
+    const int kGnssSvStatusTimeout = 2;
+    std::list<IGnssCallback::GnssSvStatus> sv_status_list;
+    int count = gnss_cb_->sv_status_cbq_.retrieve(sv_status_list, sv_status_cbq_size,
+                                                  kGnssSvStatusTimeout);
+    ASSERT_EQ(count, sv_status_cbq_size);
+
     IGnssConfiguration::BlacklistedSource source_to_blacklist =
-        FindStrongFrequentNonGpsSource(list_gnss_sv_status_, kLocationsToAwait - 1);
+            FindStrongFrequentNonGpsSource(sv_status_list, kLocationsToAwait - 1);
 
     if (source_to_blacklist.constellation == GnssConstellationType::UNKNOWN) {
         // Cannot find a non-GPS satellite. Let the test pass.
@@ -260,21 +273,26 @@
     EXPECT_TRUE(result);
 
     // retry and ensure satellite not used
-    list_gnss_sv_status_.clear();
+    gnss_cb_->sv_status_cbq_.reset();
 
+    gnss_cb_->location_cbq_.reset();
     StartAndCheckLocations(kLocationsToAwait);
 
     // early exit if test is being run with insufficient signal
-    if (location_called_count_ == 0) {
+    location_called_count = gnss_cb_->location_cbq_.calledCount();
+    if (location_called_count == 0) {
         ALOGE("0 Gnss locations received - ensure sufficient signal and retry");
     }
-    ASSERT_TRUE(location_called_count_ > 0);
+    ASSERT_TRUE(location_called_count > 0);
 
     // Tolerate 1 less sv status to handle edge cases in reporting.
-    EXPECT_GE((int)list_gnss_sv_status_.size() + 1, kLocationsToAwait);
-    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations (%d received)",
-          (int)list_gnss_sv_status_.size(), kLocationsToAwait, location_called_count_);
-    for (const auto& gnss_sv_status : list_gnss_sv_status_) {
+    sv_status_cbq_size = gnss_cb_->sv_status_cbq_.size();
+    EXPECT_GE(sv_status_cbq_size + 1, kLocationsToAwait);
+    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations (%d received)", sv_status_cbq_size,
+          kLocationsToAwait, location_called_count);
+    for (int i = 0; i < sv_status_cbq_size; ++i) {
+        IGnssCallback::GnssSvStatus gnss_sv_status;
+        gnss_cb_->sv_status_cbq_.retrieve(gnss_sv_status, kGnssSvStatusTimeout);
         for (uint32_t iSv = 0; iSv < gnss_sv_status.numSvs; iSv++) {
             const auto& gnss_sv = gnss_sv_status.gnssSvList[iSv];
             EXPECT_FALSE((gnss_sv.svid == source_to_blacklist.svid) &&
@@ -295,24 +313,28 @@
     int unblacklist_loops_remaining = kRetriesToUnBlacklist;
     while (!strongest_sv_is_reobserved && (unblacklist_loops_remaining-- > 0)) {
         StopAndClearLocations();
-        list_gnss_sv_status_.clear();
+        gnss_cb_->sv_status_cbq_.reset();
 
+        gnss_cb_->location_cbq_.reset();
         StartAndCheckLocations(kLocationsToAwait);
 
         // early exit loop if test is being run with insufficient signal
-        if (location_called_count_ == 0) {
+        location_called_count = gnss_cb_->location_cbq_.calledCount();
+        if (location_called_count == 0) {
             ALOGE("0 Gnss locations received - ensure sufficient signal and retry");
         }
-        ASSERT_TRUE(location_called_count_ > 0);
+        ASSERT_TRUE(location_called_count > 0);
 
         // Tolerate 1 less sv status to handle edge cases in reporting.
-        EXPECT_GE((int)list_gnss_sv_status_.size() + 1, kLocationsToAwait);
-        ALOGD(
-            "Clear blacklist, observed %d GnssSvStatus, while awaiting %d Locations"
-            ", tries remaining %d",
-            (int)list_gnss_sv_status_.size(), kLocationsToAwait, unblacklist_loops_remaining);
+        sv_status_cbq_size = gnss_cb_->sv_status_cbq_.size();
+        EXPECT_GE(sv_status_cbq_size + 1, kLocationsToAwait);
+        ALOGD("Clear blacklist, observed %d GnssSvStatus, while awaiting %d Locations"
+              ", tries remaining %d",
+              sv_status_cbq_size, kLocationsToAwait, unblacklist_loops_remaining);
 
-        for (const auto& gnss_sv_status : list_gnss_sv_status_) {
+        for (int i = 0; i < sv_status_cbq_size; ++i) {
+            IGnssCallback::GnssSvStatus gnss_sv_status;
+            gnss_cb_->sv_status_cbq_.retrieve(gnss_sv_status, kGnssSvStatusTimeout);
             for (uint32_t iSv = 0; iSv < gnss_sv_status.numSvs; iSv++) {
                 const auto& gnss_sv = gnss_sv_status.gnssSvList[iSv];
                 if ((gnss_sv.svid == source_to_blacklist.svid) &&
@@ -339,7 +361,7 @@
  * GnssStatus does not use any constellation but GPS.
  * 4a & b) Clean up by turning off location, and send in empty blacklist.
  */
-TEST_F(GnssHalTest, BlacklistConstellation) {
+TEST_P(GnssHalTest, BlacklistConstellation) {
     if (!IsGnssHalVersion_1_1()) {
         ALOGI("Test BlacklistConstellation skipped. GNSS HAL version is greater than 1.1.");
         return;
@@ -347,16 +369,22 @@
 
     const int kLocationsToAwait = 3;
 
+    gnss_cb_->location_cbq_.reset();
     StartAndCheckLocations(kLocationsToAwait);
+    const int location_called_count = gnss_cb_->location_cbq_.calledCount();
 
     // Tolerate 1 less sv status to handle edge cases in reporting.
-    EXPECT_GE((int)list_gnss_sv_status_.size() + 1, kLocationsToAwait);
-    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations (%d received)",
-          (int)list_gnss_sv_status_.size(), kLocationsToAwait, location_called_count_);
+    int sv_status_cbq_size = gnss_cb_->sv_status_cbq_.size();
+    EXPECT_GE(sv_status_cbq_size + 1, kLocationsToAwait);
+    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations (%d received)", sv_status_cbq_size,
+          kLocationsToAwait, location_called_count);
 
     // Find first non-GPS constellation to blacklist
+    const int kGnssSvStatusTimeout = 2;
     GnssConstellationType constellation_to_blacklist = GnssConstellationType::UNKNOWN;
-    for (const auto& gnss_sv_status : list_gnss_sv_status_) {
+    for (int i = 0; i < sv_status_cbq_size; ++i) {
+        IGnssCallback::GnssSvStatus gnss_sv_status;
+        gnss_cb_->sv_status_cbq_.retrieve(gnss_sv_status, kGnssSvStatusTimeout);
         for (uint32_t iSv = 0; iSv < gnss_sv_status.numSvs; iSv++) {
             const auto& gnss_sv = gnss_sv_status.gnssSvList[iSv];
             if ((gnss_sv.svFlag & IGnssCallback::GnssSvFlags::USED_IN_FIX) &&
@@ -395,16 +423,19 @@
     EXPECT_TRUE(result);
 
     // retry and ensure constellation not used
-    list_gnss_sv_status_.clear();
+    gnss_cb_->sv_status_cbq_.reset();
 
-    location_called_count_ = 0;
+    gnss_cb_->location_cbq_.reset();
     StartAndCheckLocations(kLocationsToAwait);
 
     // Tolerate 1 less sv status to handle edge cases in reporting.
-    EXPECT_GE((int)list_gnss_sv_status_.size() + 1, kLocationsToAwait);
-    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations", (int)list_gnss_sv_status_.size(),
+    sv_status_cbq_size = gnss_cb_->sv_status_cbq_.size();
+    EXPECT_GE(sv_status_cbq_size + 1, kLocationsToAwait);
+    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations", sv_status_cbq_size,
           kLocationsToAwait);
-    for (const auto& gnss_sv_status : list_gnss_sv_status_) {
+    for (int i = 0; i < sv_status_cbq_size; ++i) {
+        IGnssCallback::GnssSvStatus gnss_sv_status;
+        gnss_cb_->sv_status_cbq_.retrieve(gnss_sv_status, kGnssSvStatusTimeout);
         for (uint32_t iSv = 0; iSv < gnss_sv_status.numSvs; iSv++) {
             const auto& gnss_sv = gnss_sv_status.gnssSvList[iSv];
             EXPECT_FALSE((gnss_sv.constellation == source_to_blacklist.constellation) &&
@@ -425,9 +456,9 @@
  *
  * Ensure successfully injecting a location.
  */
-TEST_F(GnssHalTest, InjectBestLocation) {
+TEST_P(GnssHalTest, InjectBestLocation) {
     StartAndCheckLocations(1);
-    GnssLocation gnssLocation = last_location_;
+    GnssLocation gnssLocation = gnss_cb_->last_location_;
     CheckLocation(gnssLocation, true);
 
     auto result = gnss_hal_->injectBestLocation(gnssLocation);
@@ -444,10 +475,10 @@
  * GnssDebugValuesSanityTest:
  * Ensures that GnssDebug values make sense.
  */
-TEST_F(GnssHalTest, GnssDebugValuesSanityTest) {
+TEST_P(GnssHalTest, GnssDebugValuesSanityTest) {
     auto gnssDebug = gnss_hal_->getExtensionGnssDebug();
     ASSERT_TRUE(gnssDebug.isOk());
-    if (info_called_count_ > 0 && last_info_.yearOfHw >= 2017) {
+    if (gnss_cb_->info_cbq_.calledCount() > 0 && gnss_cb_->last_info_.yearOfHw >= 2017) {
         sp<IGnssDebug> iGnssDebug = gnssDebug;
         EXPECT_NE(iGnssDebug, nullptr);
 
diff --git a/gnss/2.0/vts/functional/Android.bp b/gnss/2.0/vts/functional/Android.bp
index 278d87b..9aa1334 100644
--- a/gnss/2.0/vts/functional/Android.bp
+++ b/gnss/2.0/vts/functional/Android.bp
@@ -30,4 +30,5 @@
         "android.hardware.gnss@2.0",
         "android.hardware.gnss@common-vts-lib",
     ],
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/gnss/2.0/vts/functional/VtsHalGnssV2_0TargetTest.cpp b/gnss/2.0/vts/functional/VtsHalGnssV2_0TargetTest.cpp
index ae36c50..2c74fa3 100644
--- a/gnss/2.0/vts/functional/VtsHalGnssV2_0TargetTest.cpp
+++ b/gnss/2.0/vts/functional/VtsHalGnssV2_0TargetTest.cpp
@@ -15,15 +15,15 @@
  */
 #define LOG_TAG "VtsHalGnssV2_0TargetTest"
 
-#include <VtsHalHidlTargetTestBase.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "gnss_hal_test.h"
 
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(GnssHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    GnssHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    ALOGI("Test result = %d", status);
-    return status;
-}
+using android::hardware::gnss::V2_0::IGnss;
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GnssHalTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IGnss::descriptor)),
+        android::hardware::PrintInstanceNameToString);
\ No newline at end of file
diff --git a/gnss/2.0/vts/functional/gnss_hal_test.cpp b/gnss/2.0/vts/functional/gnss_hal_test.cpp
index 14ae43c..8ca3f68 100644
--- a/gnss/2.0/vts/functional/gnss_hal_test.cpp
+++ b/gnss/2.0/vts/functional/gnss_hal_test.cpp
@@ -20,12 +20,13 @@
 #include <chrono>
 #include "Utils.h"
 
+#include <gtest/gtest.h>
+
 using ::android::hardware::gnss::common::Utils;
 
 // Implementations for the main test class for GNSS HAL
 void GnssHalTest::SetUp() {
-    gnss_hal_ = ::testing::VtsHalHidlTargetTestBase::getService<IGnss>(
-        GnssHidlEnvironment::Instance()->getServiceName<IGnss>());
+    gnss_hal_ = IGnss::getService(GetParam());
     ASSERT_NE(gnss_hal_, nullptr);
 
     SetUpGnssCallback();
diff --git a/gnss/2.0/vts/functional/gnss_hal_test.h b/gnss/2.0/vts/functional/gnss_hal_test.h
index 90a7866..4f7b87a 100644
--- a/gnss/2.0/vts/functional/gnss_hal_test.h
+++ b/gnss/2.0/vts/functional/gnss_hal_test.h
@@ -18,18 +18,15 @@
 #define GNSS_HAL_TEST_H_
 
 #include <android/hardware/gnss/2.0/IGnss.h>
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
+#include "GnssCallbackEventQueue.h"
 
-#include <condition_variable>
-#include <deque>
-#include <list>
-#include <mutex>
+#include <gtest/gtest.h>
 
 using android::hardware::hidl_vec;
 using android::hardware::Return;
 using android::hardware::Void;
 
+using android::hardware::gnss::common::GnssCallbackEventQueue;
 using android::hardware::gnss::measurement_corrections::V1_0::IMeasurementCorrectionsCallback;
 using android::hardware::gnss::V1_0::GnssLocationFlags;
 using android::hardware::gnss::V2_0::IGnss;
@@ -48,72 +45,13 @@
 
 #define TIMEOUT_SEC 2  // for basic commands/responses
 
-// Test environment for GNSS HIDL HAL.
-class GnssHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static GnssHidlEnvironment* Instance() {
-        static GnssHidlEnvironment* instance = new GnssHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<IGnss>(); }
-
-   private:
-    GnssHidlEnvironment() {}
-};
-
 // The main test class for GNSS HAL.
-class GnssHalTest : public ::testing::VtsHalHidlTargetTestBase {
-   public:
+class GnssHalTest : public testing::TestWithParam<std::string> {
+  public:
     virtual void SetUp() override;
 
     virtual void TearDown() override;
 
-    /* Producer/consumer queue for storing/retrieving callback events from GNSS HAL */
-    template <class T>
-    class CallbackQueue {
-      public:
-        CallbackQueue(const std::string& name) : name_(name), called_count_(0){};
-        ~CallbackQueue() { reset(); }
-
-        /* Adds callback event to the end of the queue. */
-        void store(const T& event);
-
-        /*
-         * Removes the callack event at the front of the queue, stores it in event parameter
-         * and returns true. Returns false on timeout and event is not populated.
-         */
-        bool retrieve(T& event, int timeout_seconds);
-
-        /*
-         * Removes parameter count number of callack events at the front of the queue, stores
-         * them in event_list parameter and returns the number of events retrieved. Waits up to
-         * timeout_seconds to retrieve each event. If timeout occurs, it returns the number of
-         * items retrieved which will be less than count.
-         */
-        int retrieve(list<T>& event_list, int count, int timeout_seconds);
-
-        /* Returns the number of events pending to be retrieved from the callback event queue. */
-        int size() const;
-
-        /* Returns the number of callback events received since last reset(). */
-        int calledCount() const;
-
-        /* Clears the callback event queue and resets the calledCount() to 0. */
-        void reset();
-
-      private:
-        CallbackQueue(const CallbackQueue&) = delete;
-        CallbackQueue& operator=(const CallbackQueue&) = delete;
-
-        std::string name_;
-        int called_count_;
-        mutable std::recursive_mutex mtx_;
-        std::condition_variable_any cv_;
-        std::deque<T> events_;
-    };
-
     /* Callback class for data & Event. */
     class GnssCallback : public IGnssCallback_2_0 {
       public:
@@ -122,11 +60,11 @@
         uint32_t last_capabilities_;
         GnssLocation_2_0 last_location_;
 
-        CallbackQueue<IGnssCallback_1_0::GnssSystemInfo> info_cbq_;
-        CallbackQueue<android::hardware::hidl_string> name_cbq_;
-        CallbackQueue<uint32_t> capabilities_cbq_;
-        CallbackQueue<GnssLocation_2_0> location_cbq_;
-        CallbackQueue<hidl_vec<IGnssCallback_2_0::GnssSvInfo>> sv_info_list_cbq_;
+        GnssCallbackEventQueue<IGnssCallback_1_0::GnssSystemInfo> info_cbq_;
+        GnssCallbackEventQueue<android::hardware::hidl_string> name_cbq_;
+        GnssCallbackEventQueue<uint32_t> capabilities_cbq_;
+        GnssCallbackEventQueue<GnssLocation_2_0> location_cbq_;
+        GnssCallbackEventQueue<hidl_vec<IGnssCallback_2_0::GnssSvInfo>> sv_info_list_cbq_;
 
         GnssCallback();
         virtual ~GnssCallback() = default;
@@ -169,7 +107,7 @@
     /* Callback class for GnssMeasurement. */
     class GnssMeasurementCallback : public IGnssMeasurementCallback_2_0 {
       public:
-        CallbackQueue<IGnssMeasurementCallback_2_0::GnssData> measurement_cbq_;
+        GnssCallbackEventQueue<IGnssMeasurementCallback_2_0::GnssData> measurement_cbq_;
 
         GnssMeasurementCallback() : measurement_cbq_("measurement"){};
         virtual ~GnssMeasurementCallback() = default;
@@ -192,7 +130,7 @@
     class GnssMeasurementCorrectionsCallback : public IMeasurementCorrectionsCallback {
       public:
         uint32_t last_capabilities_;
-        CallbackQueue<uint32_t> capabilities_cbq_;
+        GnssCallbackEventQueue<uint32_t> capabilities_cbq_;
 
         GnssMeasurementCorrectionsCallback() : capabilities_cbq_("capabilities"){};
         virtual ~GnssMeasurementCorrectionsCallback() = default;
@@ -252,61 +190,4 @@
     sp<GnssCallback> gnss_cb_;   // Primary callback interface
 };
 
-template <class T>
-void GnssHalTest::CallbackQueue<T>::store(const T& event) {
-    std::unique_lock<std::recursive_mutex> lock(mtx_);
-    events_.push_back(event);
-    ++called_count_;
-    lock.unlock();
-    cv_.notify_all();
-}
-
-template <class T>
-bool GnssHalTest::CallbackQueue<T>::retrieve(T& event, int timeout_seconds) {
-    std::unique_lock<std::recursive_mutex> lock(mtx_);
-    cv_.wait_for(lock, std::chrono::seconds(timeout_seconds), [&] { return !events_.empty(); });
-    if (events_.empty()) {
-        return false;
-    }
-    event = events_.front();
-    events_.pop_front();
-    return true;
-}
-
-template <class T>
-int GnssHalTest::CallbackQueue<T>::retrieve(list<T>& event_list, int count, int timeout_seconds) {
-    for (int i = 0; i < count; ++i) {
-        T event;
-        if (!retrieve(event, timeout_seconds)) {
-            return i;
-        }
-        event_list.push_back(event);
-    }
-
-    return count;
-}
-
-template <class T>
-int GnssHalTest::CallbackQueue<T>::size() const {
-    std::unique_lock<std::recursive_mutex> lock(mtx_);
-    return events_.size();
-}
-
-template <class T>
-int GnssHalTest::CallbackQueue<T>::calledCount() const {
-    std::unique_lock<std::recursive_mutex> lock(mtx_);
-    return called_count_;
-}
-
-template <class T>
-void GnssHalTest::CallbackQueue<T>::reset() {
-    std::unique_lock<std::recursive_mutex> lock(mtx_);
-    if (!events_.empty()) {
-        ALOGW("%u unprocessed events discarded in callback queue %s", (unsigned int)events_.size(),
-              name_.c_str());
-    }
-    events_.clear();
-    called_count_ = 0;
-}
-
 #endif  // GNSS_HAL_TEST_H_
diff --git a/gnss/2.0/vts/functional/gnss_hal_test_cases.cpp b/gnss/2.0/vts/functional/gnss_hal_test_cases.cpp
index 39736cc..c442cc6 100644
--- a/gnss/2.0/vts/functional/gnss_hal_test_cases.cpp
+++ b/gnss/2.0/vts/functional/gnss_hal_test_cases.cpp
@@ -16,10 +16,11 @@
 
 #define LOG_TAG "GnssHalTestCases"
 
-#include <VtsHalHidlTargetTestBase.h>
 #include <gnss_hal_test.h>
 #include "Utils.h"
 
+#include <gtest/gtest.h>
+
 using android::hardware::hidl_string;
 using android::hardware::hidl_vec;
 
@@ -51,13 +52,13 @@
  *
  * Empty test fixture to verify basic Setup & Teardown
  */
-TEST_F(GnssHalTest, SetupTeardownCreateCleanup) {}
+TEST_P(GnssHalTest, SetupTeardownCreateCleanup) {}
 
 /*
  * TestGnssMeasurementExtension:
  * Gets the GnssMeasurementExtension and verifies that it returns an actual extension.
  */
-TEST_F(GnssHalTest, TestGnssMeasurementExtension) {
+TEST_P(GnssHalTest, TestGnssMeasurementExtension) {
     auto gnssMeasurement_2_0 = gnss_hal_->getExtensionGnssMeasurement_2_0();
     auto gnssMeasurement_1_1 = gnss_hal_->getExtensionGnssMeasurement_1_1();
     auto gnssMeasurement_1_0 = gnss_hal_->getExtensionGnssMeasurement();
@@ -80,7 +81,7 @@
  * The GNSS HAL 2.0 implementation must support @2.0::IGnssConfiguration interface due to
  * the deprecation of some methods in @1.0::IGnssConfiguration interface.
  */
-TEST_F(GnssHalTest, TestGnssConfigurationExtension) {
+TEST_P(GnssHalTest, TestGnssConfigurationExtension) {
     auto gnssConfiguration = gnss_hal_->getExtensionGnssConfiguration_2_0();
     ASSERT_TRUE(gnssConfiguration.isOk());
     sp<IGnssConfiguration_2_0> iGnssConfiguration = gnssConfiguration;
@@ -96,7 +97,7 @@
  * TestGnssConfiguration_setSuplEs_Deprecation:
  * Calls setSuplEs and verifies that it returns false.
  */
-TEST_F(GnssHalTest, TestGnssConfiguration_setSuplEs_Deprecation) {
+TEST_P(GnssHalTest, TestGnssConfiguration_setSuplEs_Deprecation) {
     auto gnssConfiguration = gnss_hal_->getExtensionGnssConfiguration_2_0();
     ASSERT_TRUE(gnssConfiguration.isOk());
     sp<IGnssConfiguration_2_0> iGnssConfiguration = gnssConfiguration;
@@ -111,7 +112,7 @@
  * TestGnssConfiguration_setGpsLock_Deprecation:
  * Calls setGpsLock and verifies that it returns false.
  */
-TEST_F(GnssHalTest, TestGnssConfiguration_setGpsLock_Deprecation) {
+TEST_P(GnssHalTest, TestGnssConfiguration_setGpsLock_Deprecation) {
     auto gnssConfiguration = gnss_hal_->getExtensionGnssConfiguration_2_0();
     ASSERT_TRUE(gnssConfiguration.isOk());
     sp<IGnssConfiguration_2_0> iGnssConfiguration = gnssConfiguration;
@@ -130,7 +131,7 @@
  * @2.0::IAGnssRil interface due to the deprecation of framework network API methods needed
  * to support the @1.0::IAGnssRil interface.
  */
-TEST_F(GnssHalTest, TestAGnssRilExtension) {
+TEST_P(GnssHalTest, TestAGnssRilExtension) {
     auto agnssRil_2_0 = gnss_hal_->getExtensionAGnssRil_2_0();
     ASSERT_TRUE(agnssRil_2_0.isOk());
     sp<IAGnssRil_2_0> iAGnssRil_2_0 = agnssRil_2_0;
@@ -148,7 +149,7 @@
  * 1. Updates GNSS HAL that a network has connected.
  * 2. Updates GNSS HAL that network has disconnected.
  */
-TEST_F(GnssHalTest, TestAGnssRil_UpdateNetworkState_2_0) {
+TEST_P(GnssHalTest, TestAGnssRil_UpdateNetworkState_2_0) {
     auto agnssRil = gnss_hal_->getExtensionAGnssRil_2_0();
     ASSERT_TRUE(agnssRil.isOk());
     sp<IAGnssRil_2_0> iAGnssRil = agnssRil;
@@ -180,7 +181,7 @@
  * 2. constellation is valid.
  * 3. state is valid.
  */
-TEST_F(GnssHalTest, TestGnssMeasurementFields) {
+TEST_P(GnssHalTest, TestGnssMeasurementFields) {
     const int kFirstGnssMeasurementTimeoutSeconds = 10;
 
     auto gnssMeasurement = gnss_hal_->getExtensionGnssMeasurement_2_0();
@@ -234,7 +235,7 @@
  * @2.0::IAGnss interface due to the deprecation of framework network API methods needed
  * to support the @1.0::IAGnss interface.
  */
-TEST_F(GnssHalTest, TestAGnssExtension) {
+TEST_P(GnssHalTest, TestAGnssExtension) {
     auto agnss_2_0 = gnss_hal_->getExtensionAGnss_2_0();
     ASSERT_TRUE(agnss_2_0.isOk());
     sp<IAGnss_2_0> iAGnss_2_0 = agnss_2_0;
@@ -258,7 +259,7 @@
  * TestGnssNiExtension_Deprecation:
  * Gets the @1.0::IGnssNi extension and verifies that it is a nullptr.
  */
-TEST_F(GnssHalTest, TestGnssNiExtension_Deprecation) {
+TEST_P(GnssHalTest, TestGnssNiExtension_Deprecation) {
     // Verify IGnssNi 1.0 is not supported.
     auto gnssNi = gnss_hal_->getExtensionGnssNi();
     ASSERT_TRUE(!gnssNi.isOk() || ((sp<IGnssNi>)gnssNi) == nullptr);
@@ -269,7 +270,7 @@
  * Gets the GnssVisibilityControlExtension and if it is not null, verifies that it supports
  * the gnss.visibility_control@1.0::IGnssVisibilityControl interface by invoking a method.
  */
-TEST_F(GnssHalTest, TestGnssVisibilityControlExtension) {
+TEST_P(GnssHalTest, TestGnssVisibilityControlExtension) {
     auto gnssVisibilityControl = gnss_hal_->getExtensionVisibilityControl();
     ASSERT_TRUE(gnssVisibilityControl.isOk());
     sp<IGnssVisibilityControl> iGnssVisibilityControl = gnssVisibilityControl;
@@ -290,7 +291,7 @@
  * capabilities are reported and the mandatory LOS_SATS or the EXCESS_PATH_LENGTH
  * capability flag is set.
  */
-TEST_F(GnssHalTest, TestGnssMeasurementCorrectionsCapabilities) {
+TEST_P(GnssHalTest, TestGnssMeasurementCorrectionsCapabilities) {
     if (!(gnss_cb_->last_capabilities_ & IGnssCallback::Capabilities::MEASUREMENT_CORRECTIONS)) {
         return;
     }
@@ -318,7 +319,7 @@
  * If measurement corrections capability is supported, verifies that it supports the
  * gnss.measurement_corrections@1.0::IMeasurementCorrections interface by invoking a method.
  */
-TEST_F(GnssHalTest, TestGnssMeasurementCorrections) {
+TEST_P(GnssHalTest, TestGnssMeasurementCorrections) {
     if (!(gnss_cb_->last_capabilities_ & IGnssCallback::Capabilities::MEASUREMENT_CORRECTIONS)) {
         return;
     }
@@ -348,7 +349,7 @@
  * Sets a GnssMeasurementCallback, waits for a GnssData object, and verifies the flags in member
  * elapsedRealitme are valid.
  */
-TEST_F(GnssHalTest, TestGnssDataElapsedRealtimeFlags) {
+TEST_P(GnssHalTest, TestGnssDataElapsedRealtimeFlags) {
     const int kFirstGnssMeasurementTimeoutSeconds = 10;
 
     auto gnssMeasurement = gnss_hal_->getExtensionGnssMeasurement_2_0();
@@ -383,7 +384,7 @@
     iGnssMeasurement->close();
 }
 
-TEST_F(GnssHalTest, TestGnssLocationElapsedRealtime) {
+TEST_P(GnssHalTest, TestGnssLocationElapsedRealtime) {
     StartAndCheckFirstLocation();
 
     ASSERT_TRUE((int)gnss_cb_->last_location_.elapsedRealtime.flags <=
@@ -399,7 +400,7 @@
 }
 
 // This test only verify that injectBestLocation_2_0 does not crash.
-TEST_F(GnssHalTest, TestInjectBestLocation_2_0) {
+TEST_P(GnssHalTest, TestInjectBestLocation_2_0) {
     StartAndCheckFirstLocation();
     gnss_hal_->injectBestLocation_2_0(gnss_cb_->last_location_);
     StopAndClearLocations();
@@ -410,7 +411,7 @@
  * Gets the @2.0::IGnssBatching extension and verifies that it doesn't return an error. Support
  * for this interface is optional.
  */
-TEST_F(GnssHalTest, TestGnssBatchingExtension) {
+TEST_P(GnssHalTest, TestGnssBatchingExtension) {
     auto gnssBatching_2_0 = gnss_hal_->getExtensionGnssBatching_2_0();
     ASSERT_TRUE(gnssBatching_2_0.isOk());
 }
@@ -422,7 +423,7 @@
  * NO_LOCATION_PERIOD_SEC and verfiy that no location is received. Also perform validity checks on
  * each received location.
  */
-TEST_F(GnssHalTest, GetLocationLowPower) {
+TEST_P(GnssHalTest, GetLocationLowPower) {
     if (!(gnss_cb_->last_capabilities_ & IGnssCallback::Capabilities::LOW_POWER_MODE)) {
         ALOGI("Test GetLocationLowPower skipped. LOW_POWER_MODE capability not supported.");
         return;
@@ -453,18 +454,18 @@
         // ensure that no location is received yet
 
         gnss_cb_->location_cbq_.retrieve(gnss_cb_->last_location_, kNoLocationPeriodSec);
-        const int locationCalledCount = gnss_cb_->location_cbq_.calledCount();
+        const int location_called_count = gnss_cb_->location_cbq_.calledCount();
 
         // Tolerate (ignore) one extra location right after the first one
         // to handle startup edge case scheduling limitations in some implementations
-        if ((i == 1) && (locationCalledCount == 2)) {
+        if ((i == 1) && (location_called_count == 2)) {
             CheckLocation(gnss_cb_->last_location_, true);
             continue;  // restart the quiet wait period after this too-fast location
         }
-        EXPECT_LE(locationCalledCount, i);
-        if (locationCalledCount != i) {
+        EXPECT_LE(location_called_count, i);
+        if (location_called_count != i) {
             ALOGW("GetLocationLowPower test - not enough locations received. %d vs. %d expected ",
-                  locationCalledCount, i);
+                  location_called_count, i);
         }
 
         if (!gnss_cb_->location_cbq_.retrieve(
@@ -513,7 +514,7 @@
  *         or a source with constellation == UNKNOWN if none are found sufficient times
  */
 IGnssConfiguration_1_1::BlacklistedSource FindStrongFrequentNonGpsSource(
-        const list<hidl_vec<IGnssCallback_2_0::GnssSvInfo>>& sv_info_lists,
+        const std::list<hidl_vec<IGnssCallback_2_0::GnssSvInfo>>& sv_info_lists,
         const int min_observations) {
     struct ComparableBlacklistedSource {
         IGnssConfiguration_1_1::BlacklistedSource id;
@@ -599,7 +600,7 @@
  * 5b) Retry a few times, in case GNSS search strategy takes a while to reacquire even the
  * formerly strongest satellite
  */
-TEST_F(GnssHalTest, BlacklistIndividualSatellites) {
+TEST_P(GnssHalTest, BlacklistIndividualSatellites) {
     if (!(gnss_cb_->last_capabilities_ & IGnssCallback::Capabilities::SATELLITE_BLACKLIST)) {
         ALOGI("Test BlacklistIndividualSatellites skipped. SATELLITE_BLACKLIST capability"
               " not supported.");
@@ -626,7 +627,7 @@
      */
 
     const int kGnssSvStatusTimeout = 2;
-    list<hidl_vec<IGnssCallback_2_0::GnssSvInfo>> sv_info_lists;
+    std::list<hidl_vec<IGnssCallback_2_0::GnssSvInfo>> sv_info_lists;
     int count = gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_lists, sv_info_list_cbq_size,
                                                      kGnssSvStatusTimeout);
     ASSERT_EQ(count, sv_info_list_cbq_size);
@@ -744,7 +745,7 @@
  * GnssStatus does not use any constellation but GPS.
  * 4a & b) Clean up by turning off location, and send in empty blacklist.
  */
-TEST_F(GnssHalTest, BlacklistConstellation) {
+TEST_P(GnssHalTest, BlacklistConstellation) {
     if (!(gnss_cb_->last_capabilities_ & IGnssCallback::Capabilities::SATELLITE_BLACKLIST)) {
         ALOGI("Test BlacklistConstellation skipped. SATELLITE_BLACKLIST capability not supported.");
         return;
diff --git a/gnss/common/utils/vts/include/GnssCallbackEventQueue.h b/gnss/common/utils/vts/include/GnssCallbackEventQueue.h
new file mode 100644
index 0000000..3dc429b
--- /dev/null
+++ b/gnss/common/utils/vts/include/GnssCallbackEventQueue.h
@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_gnss_common_vts_GnssCallbackEventQueue_H_
+#define android_hardware_gnss_common_vts_GnssCallbackEventQueue_H_
+
+#include <log/log.h>
+
+#include <condition_variable>
+#include <deque>
+#include <list>
+#include <mutex>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace common {
+
+/*
+ * Producer/consumer queue for storing/retrieving callback events from GNSS HAL.
+ */
+template <class T>
+class GnssCallbackEventQueue {
+  public:
+    GnssCallbackEventQueue(const std::string& name) : name_(name), called_count_(0){};
+    ~GnssCallbackEventQueue() { reset(); }
+
+    /* Adds callback event to the end of the queue. */
+    void store(const T& event);
+
+    /*
+     * Removes the callack event at the front of the queue, stores it in event parameter
+     * and returns true. Returns false on timeout and event is not populated.
+     */
+    bool retrieve(T& event, int timeout_seconds);
+
+    /*
+     * Removes parameter count number of callack events at the front of the queue, stores
+     * them in event_list parameter and returns the number of events retrieved. Waits up to
+     * timeout_seconds to retrieve each event. If timeout occurs, it returns the number of
+     * items retrieved which will be less than count.
+     */
+    int retrieve(std::list<T>& event_list, int count, int timeout_seconds);
+
+    /* Returns the number of events pending to be retrieved from the callback event queue. */
+    int size() const;
+
+    /* Returns the number of callback events received since last reset(). */
+    int calledCount() const;
+
+    /* Clears the callback event queue and resets the calledCount() to 0. */
+    void reset();
+
+  private:
+    GnssCallbackEventQueue(const GnssCallbackEventQueue&) = delete;
+    GnssCallbackEventQueue& operator=(const GnssCallbackEventQueue&) = delete;
+
+    std::string name_;
+    int called_count_;
+    mutable std::recursive_mutex mtx_;
+    std::condition_variable_any cv_;
+    std::deque<T> events_;
+};
+
+template <class T>
+void GnssCallbackEventQueue<T>::store(const T& event) {
+    std::unique_lock<std::recursive_mutex> lock(mtx_);
+    events_.push_back(event);
+    ++called_count_;
+    lock.unlock();
+    cv_.notify_all();
+}
+
+template <class T>
+bool GnssCallbackEventQueue<T>::retrieve(T& event, int timeout_seconds) {
+    std::unique_lock<std::recursive_mutex> lock(mtx_);
+    cv_.wait_for(lock, std::chrono::seconds(timeout_seconds), [&] { return !events_.empty(); });
+    if (events_.empty()) {
+        return false;
+    }
+    event = events_.front();
+    events_.pop_front();
+    return true;
+}
+
+template <class T>
+int GnssCallbackEventQueue<T>::retrieve(std::list<T>& event_list, int count, int timeout_seconds) {
+    for (int i = 0; i < count; ++i) {
+        T event;
+        if (!retrieve(event, timeout_seconds)) {
+            return i;
+        }
+        event_list.push_back(event);
+    }
+
+    return count;
+}
+
+template <class T>
+int GnssCallbackEventQueue<T>::size() const {
+    std::unique_lock<std::recursive_mutex> lock(mtx_);
+    return events_.size();
+}
+
+template <class T>
+int GnssCallbackEventQueue<T>::calledCount() const {
+    std::unique_lock<std::recursive_mutex> lock(mtx_);
+    return called_count_;
+}
+
+template <class T>
+void GnssCallbackEventQueue<T>::reset() {
+    std::unique_lock<std::recursive_mutex> lock(mtx_);
+    if (!events_.empty()) {
+        ALOGW("%u unprocessed events discarded in callback queue %s", (unsigned int)events_.size(),
+              name_.c_str());
+    }
+    events_.clear();
+    called_count_ = 0;
+}
+
+}  // namespace common
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_gnss_common_vts_GnssCallbackEventQueue_H_
diff --git a/graphics/allocator/4.0/Android.bp b/graphics/allocator/4.0/Android.bp
new file mode 100644
index 0000000..f5f9458
--- /dev/null
+++ b/graphics/allocator/4.0/Android.bp
@@ -0,0 +1,20 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.graphics.allocator@4.0",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "IAllocator.hal",
+    ],
+    interfaces: [
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.common@1.1",
+        "android.hardware.graphics.common@1.2",
+        "android.hardware.graphics.mapper@4.0",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: false,
+}
diff --git a/graphics/allocator/4.0/IAllocator.hal b/graphics/allocator/4.0/IAllocator.hal
new file mode 100644
index 0000000..9931685
--- /dev/null
+++ b/graphics/allocator/4.0/IAllocator.hal
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.allocator@4.0;
+
+import android.hardware.graphics.mapper@4.0;
+
+interface IAllocator {
+    /**
+     * Retrieves implementation-defined debug information, which will be
+     * displayed during, for example, `dumpsys SurfaceFlinger`.
+     *
+     * @return debugInfo is a string of debug information.
+     */
+    dumpDebugInfo() generates (string debugInfo);
+
+    /**
+     * Allocates buffers with the properties specified by the descriptor.
+     *
+     * Allocations should be optimized for usage bits provided in the
+     * descriptor.
+     *
+     * @param descriptor Properties of the buffers to allocate. This must be
+     *     obtained from IMapper::createDescriptor().
+     * @param count The number of buffers to allocate.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_DESCRIPTOR` if the descriptor is invalid.
+     *     - `NO_RESOURCES` if the allocation cannot be fulfilled at this time.
+     *     - `UNSUPPORTED` if any of the properties encoded in the descriptor
+     *       are not supported.
+     * @return stride The number of pixels between two consecutive rows of
+     *     an allocated buffer, when the concept of consecutive rows is defined.
+     *     Otherwise, it has no meaning.
+     * @return buffers Array of raw handles to the allocated buffers.
+     */
+    allocate(BufferDescriptor descriptor, uint32_t count)
+        generates (Error error,
+                   uint32_t stride,
+                   vec<handle> buffers);
+};
+
diff --git a/graphics/composer/2.1/default/Android.bp b/graphics/composer/2.1/default/Android.bp
index 6157719..533687b 100644
--- a/graphics/composer/2.1/default/Android.bp
+++ b/graphics/composer/2.1/default/Android.bp
@@ -9,8 +9,7 @@
     ],
     shared_libs: [
         "android.hardware.graphics.composer@2.1",
-        "android.hardware.graphics.mapper@2.0",
-        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.composer@2.1-resources",
         "libbase",
         "libcutils",
         "libfmq",
diff --git a/graphics/composer/2.1/utils/hal/Android.bp b/graphics/composer/2.1/utils/hal/Android.bp
index 7a501fc..ea3666d 100644
--- a/graphics/composer/2.1/utils/hal/Android.bp
+++ b/graphics/composer/2.1/utils/hal/Android.bp
@@ -19,14 +19,12 @@
     vendor_available: true,
     shared_libs: [
         "android.hardware.graphics.composer@2.1",
-        "android.hardware.graphics.mapper@2.0",
-        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.composer@2.1-resources",
         "libhardware", // TODO remove hwcomposer2.h dependency
     ],
     export_shared_lib_headers: [
         "android.hardware.graphics.composer@2.1",
-        "android.hardware.graphics.mapper@2.0",
-        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.composer@2.1-resources",
         "libhardware",
     ],
     header_libs: [
diff --git a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/Composer.h b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/Composer.h
index 90d9b98..4b8c6bb 100644
--- a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/Composer.h
+++ b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/Composer.h
@@ -67,6 +67,14 @@
             }
         }
 
+        // we do not have HWC2_CAPABILITY_SKIP_VALIDATE defined in
+        // IComposer::Capability.  However, this is defined in hwcomposer2.h,
+        // so if the device returns it, add it manually to be returned to the
+        // client
+        if (mHal->hasCapability(HWC2_CAPABILITY_SKIP_VALIDATE)) {
+            caps.push_back(static_cast<IComposer::Capability>(HWC2_CAPABILITY_SKIP_VALIDATE));
+        }
+
         hidl_vec<IComposer::Capability> caps_reply;
         caps_reply.setToExternal(caps.data(), caps.size());
         hidl_cb(caps_reply);
@@ -80,8 +88,7 @@
 
     Return<void> createClient(IComposer::createClient_cb hidl_cb) override {
         std::unique_lock<std::mutex> lock(mClientMutex);
-        bool destroyed = waitForClientDestroyedLocked(lock);
-        if (!destroyed) {
+        if (!waitForClientDestroyedLocked(lock)) {
             hidl_cb(Error::NO_RESOURCES, nullptr);
             return Void();
         }
diff --git a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerClient.h b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerClient.h
index 095189f..47ead41 100644
--- a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerClient.h
+++ b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerClient.h
@@ -27,7 +27,7 @@
 #include <android/hardware/graphics/composer/2.1/IComposerClient.h>
 #include <composer-hal/2.1/ComposerCommandEngine.h>
 #include <composer-hal/2.1/ComposerHal.h>
-#include <composer-hal/2.1/ComposerResources.h>
+#include <composer-resources/2.1/ComposerResources.h>
 #include <log/log.h>
 
 namespace android {
diff --git a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerCommandEngine.h b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerCommandEngine.h
index d87110a..53b9202 100644
--- a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerCommandEngine.h
+++ b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerCommandEngine.h
@@ -24,7 +24,7 @@
 
 #include <composer-command-buffer/2.1/ComposerCommandBuffer.h>
 #include <composer-hal/2.1/ComposerHal.h>
-#include <composer-hal/2.1/ComposerResources.h>
+#include <composer-resources/2.1/ComposerResources.h>
 // TODO remove hwcomposer_defs.h dependency
 #include <hardware/hwcomposer_defs.h>
 #include <log/log.h>
@@ -195,7 +195,7 @@
         bool closeFence = true;
 
         const native_handle_t* clientTarget;
-        ComposerResources::ReplacedBufferHandle replacedClientTarget;
+        ComposerResources::ReplacedHandle replacedClientTarget(true);
         auto err = mResources->getDisplayClientTarget(mCurrentDisplay, slot, useCache, rawHandle,
                                                       &clientTarget, &replacedClientTarget);
         if (err == Error::NONE) {
@@ -226,7 +226,7 @@
         bool closeFence = true;
 
         const native_handle_t* outputBuffer;
-        ComposerResources::ReplacedBufferHandle replacedOutputBuffer;
+        ComposerResources::ReplacedHandle replacedOutputBuffer(true);
         auto err = mResources->getDisplayOutputBuffer(mCurrentDisplay, slot, useCache, rawhandle,
                                                       &outputBuffer, &replacedOutputBuffer);
         if (err == Error::NONE) {
@@ -369,7 +369,7 @@
         bool closeFence = true;
 
         const native_handle_t* buffer;
-        ComposerResources::ReplacedBufferHandle replacedBuffer;
+        ComposerResources::ReplacedHandle replacedBuffer(true);
         auto err = mResources->getLayerBuffer(mCurrentDisplay, mCurrentLayer, slot, useCache,
                                               rawHandle, &buffer, &replacedBuffer);
         if (err == Error::NONE) {
@@ -489,7 +489,7 @@
         auto rawHandle = readHandle();
 
         const native_handle_t* stream;
-        ComposerResources::ReplacedStreamHandle replacedStream;
+        ComposerResources::ReplacedHandle replacedStream(false);
         auto err = mResources->getLayerSidebandStream(mCurrentDisplay, mCurrentLayer, rawHandle,
                                                       &stream, &replacedStream);
         if (err == Error::NONE) {
diff --git a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerResources.h b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerResources.h
deleted file mode 100644
index 18d184e..0000000
--- a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerResources.h
+++ /dev/null
@@ -1,592 +0,0 @@
-/*
- * Copyright 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#ifndef LOG_TAG
-#warning "ComposerResources.h included without LOG_TAG"
-#endif
-
-#include <memory>
-#include <mutex>
-#include <unordered_map>
-#include <vector>
-
-#include <android/hardware/graphics/mapper/2.0/IMapper.h>
-#include <android/hardware/graphics/mapper/3.0/IMapper.h>
-#include <log/log.h>
-
-namespace android {
-namespace hardware {
-namespace graphics {
-namespace composer {
-namespace V2_1 {
-namespace hal {
-
-// wrapper for IMapper to import buffers and sideband streams
-class ComposerHandleImporter {
-   public:
-    bool init() {
-        mMapper3 = mapper::V3_0::IMapper::getService();
-        if (mMapper3) {
-            return true;
-        }
-        ALOGD_IF(!mMapper3, "failed to get mapper 3.0 service, falling back to mapper 2.0");
-
-        mMapper2 = mapper::V2_0::IMapper::getService();
-        ALOGE_IF(!mMapper2, "failed to get mapper 2.0 service");
-
-        return mMapper2 != nullptr;
-    }
-
-    Error importBuffer(const native_handle_t* rawHandle, const native_handle_t** outBufferHandle) {
-        if (!rawHandle || (!rawHandle->numFds && !rawHandle->numInts)) {
-            *outBufferHandle = nullptr;
-            return Error::NONE;
-        }
-
-        const native_handle_t* bufferHandle;
-        if (mMapper2) {
-            mapper::V2_0::Error error;
-            mMapper2->importBuffer(
-                rawHandle, [&](const auto& tmpError, const auto& tmpBufferHandle) {
-                    error = tmpError;
-                    bufferHandle = static_cast<const native_handle_t*>(tmpBufferHandle);
-                });
-            if (error != mapper::V2_0::Error::NONE) {
-                return Error::NO_RESOURCES;
-            }
-        }
-        if (mMapper3) {
-            mapper::V3_0::Error error;
-            mMapper3->importBuffer(
-                rawHandle, [&](const auto& tmpError, const auto& tmpBufferHandle) {
-                    error = tmpError;
-                    bufferHandle = static_cast<const native_handle_t*>(tmpBufferHandle);
-                });
-            if (error != mapper::V3_0::Error::NONE) {
-                return Error::NO_RESOURCES;
-            }
-        }
-
-        *outBufferHandle = bufferHandle;
-        return Error::NONE;
-    }
-
-    void freeBuffer(const native_handle_t* bufferHandle) {
-        if (bufferHandle) {
-            if (mMapper2) {
-                mMapper2->freeBuffer(
-                    static_cast<void*>(const_cast<native_handle_t*>(bufferHandle)));
-            } else if (mMapper3) {
-                mMapper3->freeBuffer(
-                    static_cast<void*>(const_cast<native_handle_t*>(bufferHandle)));
-            }
-        }
-    }
-
-    Error importStream(const native_handle_t* rawHandle, const native_handle_t** outStreamHandle) {
-        const native_handle_t* streamHandle = nullptr;
-        if (rawHandle) {
-            streamHandle = native_handle_clone(rawHandle);
-            if (!streamHandle) {
-                return Error::NO_RESOURCES;
-            }
-        }
-
-        *outStreamHandle = streamHandle;
-        return Error::NONE;
-    }
-
-    void freeStream(const native_handle_t* streamHandle) {
-        if (streamHandle) {
-            native_handle_close(streamHandle);
-            native_handle_delete(const_cast<native_handle_t*>(streamHandle));
-        }
-    }
-
-   private:
-    sp<mapper::V2_0::IMapper> mMapper2;
-    sp<mapper::V3_0::IMapper> mMapper3;
-};
-
-class ComposerHandleCache {
-   public:
-    enum class HandleType {
-        INVALID,
-        BUFFER,
-        STREAM,
-    };
-
-    ComposerHandleCache(ComposerHandleImporter& importer, HandleType type, uint32_t cacheSize)
-        : mImporter(importer), mHandleType(type), mHandles(cacheSize, nullptr) {}
-
-    // must be initialized later with initCache
-    ComposerHandleCache(ComposerHandleImporter& importer) : mImporter(importer) {}
-
-    ~ComposerHandleCache() {
-        switch (mHandleType) {
-            case HandleType::BUFFER:
-                for (auto handle : mHandles) {
-                    mImporter.freeBuffer(handle);
-                }
-                break;
-            case HandleType::STREAM:
-                for (auto handle : mHandles) {
-                    mImporter.freeStream(handle);
-                }
-                break;
-            default:
-                break;
-        }
-    }
-
-    ComposerHandleCache(const ComposerHandleCache&) = delete;
-    ComposerHandleCache& operator=(const ComposerHandleCache&) = delete;
-
-    bool initCache(HandleType type, uint32_t cacheSize) {
-        // already initialized
-        if (mHandleType != HandleType::INVALID) {
-            return false;
-        }
-
-        mHandleType = type;
-        mHandles.resize(cacheSize, nullptr);
-
-        return true;
-    }
-
-    Error lookupCache(uint32_t slot, const native_handle_t** outHandle) {
-        if (slot >= 0 && slot < mHandles.size()) {
-            *outHandle = mHandles[slot];
-            return Error::NONE;
-        } else {
-            return Error::BAD_PARAMETER;
-        }
-    }
-
-    Error updateCache(uint32_t slot, const native_handle_t* handle,
-                      const native_handle** outReplacedHandle) {
-        if (slot >= 0 && slot < mHandles.size()) {
-            auto& cachedHandle = mHandles[slot];
-            *outReplacedHandle = cachedHandle;
-            cachedHandle = handle;
-            return Error::NONE;
-        } else {
-            return Error::BAD_PARAMETER;
-        }
-    }
-
-    // when fromCache is true, look up in the cache; otherwise, update the cache
-    Error getHandle(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
-                    const native_handle_t** outHandle, const native_handle** outReplacedHandle) {
-        if (fromCache) {
-            *outReplacedHandle = nullptr;
-            return lookupCache(slot, outHandle);
-        } else {
-            *outHandle = inHandle;
-            return updateCache(slot, inHandle, outReplacedHandle);
-        }
-    }
-
-   private:
-    ComposerHandleImporter& mImporter;
-    HandleType mHandleType = HandleType::INVALID;
-    std::vector<const native_handle_t*> mHandles;
-};
-
-// layer resource
-class ComposerLayerResource {
-   public:
-    ComposerLayerResource(ComposerHandleImporter& importer, uint32_t bufferCacheSize)
-        : mBufferCache(importer, ComposerHandleCache::HandleType::BUFFER, bufferCacheSize),
-          mSidebandStreamCache(importer, ComposerHandleCache::HandleType::STREAM, 1) {}
-
-    virtual ~ComposerLayerResource() = default;
-
-    Error getBuffer(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
-                    const native_handle_t** outHandle, const native_handle** outReplacedHandle) {
-        return mBufferCache.getHandle(slot, fromCache, inHandle, outHandle, outReplacedHandle);
-    }
-
-    Error getSidebandStream(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
-                            const native_handle_t** outHandle,
-                            const native_handle** outReplacedHandle) {
-        return mSidebandStreamCache.getHandle(slot, fromCache, inHandle, outHandle,
-                                              outReplacedHandle);
-    }
-
-   protected:
-    ComposerHandleCache mBufferCache;
-    ComposerHandleCache mSidebandStreamCache;
-};
-
-// display resource
-class ComposerDisplayResource {
-   public:
-    enum class DisplayType {
-        PHYSICAL,
-        VIRTUAL,
-    };
-
-    virtual ~ComposerDisplayResource() = default;
-
-    ComposerDisplayResource(DisplayType type, ComposerHandleImporter& importer,
-                            uint32_t outputBufferCacheSize)
-        : mType(type),
-          mClientTargetCache(importer),
-          mOutputBufferCache(importer, ComposerHandleCache::HandleType::BUFFER,
-                             outputBufferCacheSize),
-          mMustValidate(true) {}
-
-    bool initClientTargetCache(uint32_t cacheSize) {
-        return mClientTargetCache.initCache(ComposerHandleCache::HandleType::BUFFER, cacheSize);
-    }
-
-    bool isVirtual() const { return mType == DisplayType::VIRTUAL; }
-
-    Error getClientTarget(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
-                          const native_handle_t** outHandle,
-                          const native_handle** outReplacedHandle) {
-        return mClientTargetCache.getHandle(slot, fromCache, inHandle, outHandle,
-                                            outReplacedHandle);
-    }
-
-    Error getOutputBuffer(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
-                          const native_handle_t** outHandle,
-                          const native_handle** outReplacedHandle) {
-        return mOutputBufferCache.getHandle(slot, fromCache, inHandle, outHandle,
-                                            outReplacedHandle);
-    }
-
-    bool addLayer(Layer layer, std::unique_ptr<ComposerLayerResource> layerResource) {
-        auto result = mLayerResources.emplace(layer, std::move(layerResource));
-        return result.second;
-    }
-
-    bool removeLayer(Layer layer) { return mLayerResources.erase(layer) > 0; }
-
-    ComposerLayerResource* findLayerResource(Layer layer) {
-        auto layerIter = mLayerResources.find(layer);
-        if (layerIter == mLayerResources.end()) {
-            return nullptr;
-        }
-
-        return layerIter->second.get();
-    }
-
-    std::vector<Layer> getLayers() const {
-        std::vector<Layer> layers;
-        layers.reserve(mLayerResources.size());
-        for (const auto& layerKey : mLayerResources) {
-            layers.push_back(layerKey.first);
-        }
-        return layers;
-    }
-
-    void setMustValidateState(bool mustValidate) { mMustValidate = mustValidate; }
-
-    bool mustValidate() const { return mMustValidate; }
-
-   protected:
-    const DisplayType mType;
-    ComposerHandleCache mClientTargetCache;
-    ComposerHandleCache mOutputBufferCache;
-    bool mMustValidate;
-
-    std::unordered_map<Layer, std::unique_ptr<ComposerLayerResource>> mLayerResources;
-};
-
-class ComposerResources {
-   private:
-    template <bool isBuffer>
-    class ReplacedHandle;
-
-   public:
-    static std::unique_ptr<ComposerResources> create() {
-        auto resources = std::make_unique<ComposerResources>();
-        return resources->init() ? std::move(resources) : nullptr;
-    }
-
-    ComposerResources() = default;
-    virtual ~ComposerResources() = default;
-
-    bool init() { return mImporter.init(); }
-
-    using RemoveDisplay =
-        std::function<void(Display display, bool isVirtual, const std::vector<Layer>& layers)>;
-    void clear(RemoveDisplay removeDisplay) {
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        for (const auto& displayKey : mDisplayResources) {
-            Display display = displayKey.first;
-            const ComposerDisplayResource& displayResource = *displayKey.second;
-            removeDisplay(display, displayResource.isVirtual(), displayResource.getLayers());
-        }
-        mDisplayResources.clear();
-    }
-
-    Error addPhysicalDisplay(Display display) {
-        auto displayResource =
-            createDisplayResource(ComposerDisplayResource::DisplayType::PHYSICAL, 0);
-
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        auto result = mDisplayResources.emplace(display, std::move(displayResource));
-        return result.second ? Error::NONE : Error::BAD_DISPLAY;
-    }
-
-    Error addVirtualDisplay(Display display, uint32_t outputBufferCacheSize) {
-        auto displayResource = createDisplayResource(ComposerDisplayResource::DisplayType::VIRTUAL,
-                                                     outputBufferCacheSize);
-
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        auto result = mDisplayResources.emplace(display, std::move(displayResource));
-        return result.second ? Error::NONE : Error::BAD_DISPLAY;
-    }
-
-    Error removeDisplay(Display display) {
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        return mDisplayResources.erase(display) > 0 ? Error::NONE : Error::BAD_DISPLAY;
-    }
-
-    Error setDisplayClientTargetCacheSize(Display display, uint32_t clientTargetCacheSize) {
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        ComposerDisplayResource* displayResource = findDisplayResourceLocked(display);
-        if (!displayResource) {
-            return Error::BAD_DISPLAY;
-        }
-
-        return displayResource->initClientTargetCache(clientTargetCacheSize) ? Error::NONE
-                                                                             : Error::BAD_PARAMETER;
-    }
-
-    Error addLayer(Display display, Layer layer, uint32_t bufferCacheSize) {
-        auto layerResource = createLayerResource(bufferCacheSize);
-
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        ComposerDisplayResource* displayResource = findDisplayResourceLocked(display);
-        if (!displayResource) {
-            return Error::BAD_DISPLAY;
-        }
-
-        return displayResource->addLayer(layer, std::move(layerResource)) ? Error::NONE
-                                                                          : Error::BAD_LAYER;
-    }
-
-    Error removeLayer(Display display, Layer layer) {
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        ComposerDisplayResource* displayResource = findDisplayResourceLocked(display);
-        if (!displayResource) {
-            return Error::BAD_DISPLAY;
-        }
-
-        return displayResource->removeLayer(layer) ? Error::NONE : Error::BAD_LAYER;
-    }
-
-    using ReplacedBufferHandle = ReplacedHandle<true>;
-    using ReplacedStreamHandle = ReplacedHandle<false>;
-
-    Error getDisplayClientTarget(Display display, uint32_t slot, bool fromCache,
-                                 const native_handle_t* rawHandle,
-                                 const native_handle_t** outBufferHandle,
-                                 ReplacedBufferHandle* outReplacedBuffer) {
-        return getHandle<Cache::CLIENT_TARGET>(display, 0, slot, fromCache, rawHandle,
-                                               outBufferHandle, outReplacedBuffer);
-    }
-
-    Error getDisplayOutputBuffer(Display display, uint32_t slot, bool fromCache,
-                                 const native_handle_t* rawHandle,
-                                 const native_handle_t** outBufferHandle,
-                                 ReplacedBufferHandle* outReplacedBuffer) {
-        return getHandle<Cache::OUTPUT_BUFFER>(display, 0, slot, fromCache, rawHandle,
-                                               outBufferHandle, outReplacedBuffer);
-    }
-
-    Error getLayerBuffer(Display display, Layer layer, uint32_t slot, bool fromCache,
-                         const native_handle_t* rawHandle, const native_handle_t** outBufferHandle,
-                         ReplacedBufferHandle* outReplacedBuffer) {
-        return getHandle<Cache::LAYER_BUFFER>(display, layer, slot, fromCache, rawHandle,
-                                              outBufferHandle, outReplacedBuffer);
-    }
-
-    Error getLayerSidebandStream(Display display, Layer layer, const native_handle_t* rawHandle,
-                                 const native_handle_t** outStreamHandle,
-                                 ReplacedStreamHandle* outReplacedStream) {
-        return getHandle<Cache::LAYER_SIDEBAND_STREAM>(display, layer, 0, false, rawHandle,
-                                                       outStreamHandle, outReplacedStream);
-    }
-
-    void setDisplayMustValidateState(Display display, bool mustValidate) {
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        auto* displayResource = findDisplayResourceLocked(display);
-        if (displayResource) {
-            displayResource->setMustValidateState(mustValidate);
-        }
-    }
-
-    bool mustValidateDisplay(Display display) {
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        auto* displayResource = findDisplayResourceLocked(display);
-        if (displayResource) {
-            return displayResource->mustValidate();
-        }
-        return false;
-    }
-
-   protected:
-    virtual std::unique_ptr<ComposerDisplayResource> createDisplayResource(
-        ComposerDisplayResource::DisplayType type, uint32_t outputBufferCacheSize) {
-        return std::make_unique<ComposerDisplayResource>(type, mImporter, outputBufferCacheSize);
-    }
-
-    virtual std::unique_ptr<ComposerLayerResource> createLayerResource(uint32_t bufferCacheSize) {
-        return std::make_unique<ComposerLayerResource>(mImporter, bufferCacheSize);
-    }
-
-    ComposerDisplayResource* findDisplayResourceLocked(Display display) {
-        auto iter = mDisplayResources.find(display);
-        if (iter == mDisplayResources.end()) {
-            return nullptr;
-        }
-        return iter->second.get();
-    }
-
-    ComposerHandleImporter mImporter;
-
-    std::mutex mDisplayResourcesMutex;
-    std::unordered_map<Display, std::unique_ptr<ComposerDisplayResource>> mDisplayResources;
-
-   private:
-    enum class Cache {
-        CLIENT_TARGET,
-        OUTPUT_BUFFER,
-        LAYER_BUFFER,
-        LAYER_SIDEBAND_STREAM,
-    };
-
-    // When a buffer in the cache is replaced by a new one, we must keep it
-    // alive until it has been replaced in ComposerHal.
-    template <bool isBuffer>
-    class ReplacedHandle {
-       public:
-        ReplacedHandle() = default;
-        ReplacedHandle(const ReplacedHandle&) = delete;
-        ReplacedHandle& operator=(const ReplacedHandle&) = delete;
-
-        ~ReplacedHandle() { reset(); }
-
-        void reset(ComposerHandleImporter* importer = nullptr,
-                   const native_handle_t* handle = nullptr) {
-            if (mHandle) {
-                if (isBuffer) {
-                    mImporter->freeBuffer(mHandle);
-                } else {
-                    mImporter->freeStream(mHandle);
-                }
-            }
-
-            mImporter = importer;
-            mHandle = handle;
-        }
-
-       private:
-        ComposerHandleImporter* mImporter = nullptr;
-        const native_handle_t* mHandle = nullptr;
-    };
-
-    template <Cache cache, bool isBuffer>
-    Error getHandle(Display display, Layer layer, uint32_t slot, bool fromCache,
-                    const native_handle_t* rawHandle, const native_handle_t** outHandle,
-                    ReplacedHandle<isBuffer>* outReplacedHandle) {
-        Error error;
-
-        // import the raw handle (or ignore raw handle when fromCache is true)
-        const native_handle_t* importedHandle = nullptr;
-        if (!fromCache) {
-            error = (isBuffer) ? mImporter.importBuffer(rawHandle, &importedHandle)
-                               : mImporter.importStream(rawHandle, &importedHandle);
-            if (error != Error::NONE) {
-                return error;
-            }
-        }
-
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-
-        // find display/layer resource
-        const bool needLayerResource =
-            (cache == Cache::LAYER_BUFFER || cache == Cache::LAYER_SIDEBAND_STREAM);
-        ComposerDisplayResource* displayResource = findDisplayResourceLocked(display);
-        ComposerLayerResource* layerResource = (displayResource && needLayerResource)
-                                                   ? displayResource->findLayerResource(layer)
-                                                   : nullptr;
-
-        // lookup or update cache
-        const native_handle_t* replacedHandle = nullptr;
-        if (displayResource && (!needLayerResource || layerResource)) {
-            switch (cache) {
-                case Cache::CLIENT_TARGET:
-                    error = displayResource->getClientTarget(slot, fromCache, importedHandle,
-                                                             outHandle, &replacedHandle);
-                    break;
-                case Cache::OUTPUT_BUFFER:
-                    error = displayResource->getOutputBuffer(slot, fromCache, importedHandle,
-                                                             outHandle, &replacedHandle);
-                    break;
-                case Cache::LAYER_BUFFER:
-                    error = layerResource->getBuffer(slot, fromCache, importedHandle, outHandle,
-                                                     &replacedHandle);
-                    break;
-                case Cache::LAYER_SIDEBAND_STREAM:
-                    error = layerResource->getSidebandStream(slot, fromCache, importedHandle,
-                                                             outHandle, &replacedHandle);
-                    break;
-                default:
-                    error = Error::BAD_PARAMETER;
-                    break;
-            }
-
-            if (error != Error::NONE) {
-                ALOGW("invalid cache %d slot %d", int(cache), int(slot));
-            }
-        } else if (!displayResource) {
-            error = Error::BAD_DISPLAY;
-        } else {
-            error = Error::BAD_LAYER;
-        }
-
-        // clean up on errors
-        if (error != Error::NONE) {
-            if (!fromCache) {
-                if (isBuffer) {
-                    mImporter.freeBuffer(importedHandle);
-                } else {
-                    mImporter.freeStream(importedHandle);
-                }
-            }
-            return error;
-        }
-
-        outReplacedHandle->reset(&mImporter, replacedHandle);
-
-        return Error::NONE;
-    }
-};
-
-}  // namespace hal
-}  // namespace V2_1
-}  // namespace composer
-}  // namespace graphics
-}  // namespace hardware
-}  // namespace android
diff --git a/graphics/composer/2.1/utils/resources/Android.bp b/graphics/composer/2.1/utils/resources/Android.bp
new file mode 100644
index 0000000..ed827fe
--- /dev/null
+++ b/graphics/composer/2.1/utils/resources/Android.bp
@@ -0,0 +1,51 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_library_shared {
+    name: "android.hardware.graphics.composer@2.1-resources",
+    defaults: ["hidl_defaults"],
+    vendor_available: true,
+    shared_libs: [
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
+        "libcutils",
+        "libhardware", // TODO remove hwcomposer2.h dependency
+        "libhidlbase",
+        "liblog",
+        "libutils",
+    ],
+    export_shared_lib_headers: [
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
+        "libhardware",
+        "libhidlbase",
+        "liblog",
+        "libutils",
+    ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+    ],
+    export_header_lib_headers: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+    ],
+    export_include_dirs: ["include"],
+    srcs: [
+        "ComposerResources.cpp",
+    ],
+}
diff --git a/graphics/composer/2.1/utils/resources/ComposerResources.cpp b/graphics/composer/2.1/utils/resources/ComposerResources.cpp
new file mode 100644
index 0000000..21f6035
--- /dev/null
+++ b/graphics/composer/2.1/utils/resources/ComposerResources.cpp
@@ -0,0 +1,503 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "ComposerResources"
+
+#include "composer-resources/2.1/ComposerResources.h"
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_1 {
+namespace hal {
+
+bool ComposerHandleImporter::init() {
+    mMapper4 = mapper::V4_0::IMapper::getService();
+    if (mMapper4) {
+        return true;
+    }
+    ALOGI_IF(!mMapper4, "failed to get mapper 4.0 service, falling back to mapper 3.0");
+
+    mMapper3 = mapper::V3_0::IMapper::getService();
+    if (mMapper3) {
+        return true;
+    }
+    ALOGI_IF(!mMapper3, "failed to get mapper 3.0 service, falling back to mapper 2.0");
+
+    mMapper2 = mapper::V2_0::IMapper::getService();
+    ALOGE_IF(!mMapper2, "failed to get mapper 2.0 service");
+
+    return mMapper2 != nullptr;
+}
+
+Error ComposerHandleImporter::importBuffer(const native_handle_t* rawHandle,
+                                           const native_handle_t** outBufferHandle) {
+    if (!rawHandle || (!rawHandle->numFds && !rawHandle->numInts)) {
+        *outBufferHandle = nullptr;
+        return Error::NONE;
+    }
+
+    const native_handle_t* bufferHandle;
+    if (mMapper2) {
+        mapper::V2_0::Error error;
+        mMapper2->importBuffer(rawHandle, [&](const auto& tmpError, const auto& tmpBufferHandle) {
+            error = tmpError;
+            bufferHandle = static_cast<const native_handle_t*>(tmpBufferHandle);
+        });
+        if (error != mapper::V2_0::Error::NONE) {
+            return Error::NO_RESOURCES;
+        }
+    }
+    if (mMapper3) {
+        mapper::V3_0::Error error;
+        mMapper3->importBuffer(rawHandle, [&](const auto& tmpError, const auto& tmpBufferHandle) {
+            error = tmpError;
+            bufferHandle = static_cast<const native_handle_t*>(tmpBufferHandle);
+        });
+        if (error != mapper::V3_0::Error::NONE) {
+            return Error::NO_RESOURCES;
+        }
+    }
+    if (mMapper4) {
+        mapper::V4_0::Error error;
+        mMapper4->importBuffer(rawHandle, [&](const auto& tmpError, const auto& tmpBufferHandle) {
+            error = tmpError;
+            bufferHandle = static_cast<const native_handle_t*>(tmpBufferHandle);
+        });
+        if (error != mapper::V4_0::Error::NONE) {
+            return Error::NO_RESOURCES;
+        }
+    }
+
+    *outBufferHandle = bufferHandle;
+    return Error::NONE;
+}
+
+void ComposerHandleImporter::freeBuffer(const native_handle_t* bufferHandle) {
+    if (bufferHandle) {
+        if (mMapper2) {
+            mMapper2->freeBuffer(static_cast<void*>(const_cast<native_handle_t*>(bufferHandle)));
+        } else if (mMapper3) {
+            mMapper3->freeBuffer(static_cast<void*>(const_cast<native_handle_t*>(bufferHandle)));
+        } else if (mMapper4) {
+            mMapper4->freeBuffer(static_cast<void*>(const_cast<native_handle_t*>(bufferHandle)));
+        }
+    }
+}
+
+Error ComposerHandleImporter::importStream(const native_handle_t* rawHandle,
+                                           const native_handle_t** outStreamHandle) {
+    const native_handle_t* streamHandle = nullptr;
+    if (rawHandle) {
+        streamHandle = native_handle_clone(rawHandle);
+        if (!streamHandle) {
+            return Error::NO_RESOURCES;
+        }
+    }
+
+    *outStreamHandle = streamHandle;
+    return Error::NONE;
+}
+
+void ComposerHandleImporter::freeStream(const native_handle_t* streamHandle) {
+    if (streamHandle) {
+        native_handle_close(streamHandle);
+        native_handle_delete(const_cast<native_handle_t*>(streamHandle));
+    }
+}
+
+ComposerHandleCache::ComposerHandleCache(ComposerHandleImporter& importer, HandleType type,
+                                         uint32_t cacheSize)
+    : mImporter(importer), mHandleType(type), mHandles(cacheSize, nullptr) {}
+
+// must be initialized later with initCache
+ComposerHandleCache::ComposerHandleCache(ComposerHandleImporter& importer) : mImporter(importer) {}
+
+ComposerHandleCache::~ComposerHandleCache() {
+    switch (mHandleType) {
+        case HandleType::BUFFER:
+            for (auto handle : mHandles) {
+                mImporter.freeBuffer(handle);
+            }
+            break;
+        case HandleType::STREAM:
+            for (auto handle : mHandles) {
+                mImporter.freeStream(handle);
+            }
+            break;
+        default:
+            break;
+    }
+}
+
+bool ComposerHandleCache::initCache(HandleType type, uint32_t cacheSize) {
+    // already initialized
+    if (mHandleType != HandleType::INVALID) {
+        return false;
+    }
+
+    mHandleType = type;
+    mHandles.resize(cacheSize, nullptr);
+
+    return true;
+}
+
+Error ComposerHandleCache::lookupCache(uint32_t slot, const native_handle_t** outHandle) {
+    if (slot >= 0 && slot < mHandles.size()) {
+        *outHandle = mHandles[slot];
+        return Error::NONE;
+    } else {
+        return Error::BAD_PARAMETER;
+    }
+}
+
+Error ComposerHandleCache::updateCache(uint32_t slot, const native_handle_t* handle,
+                                       const native_handle** outReplacedHandle) {
+    if (slot >= 0 && slot < mHandles.size()) {
+        auto& cachedHandle = mHandles[slot];
+        *outReplacedHandle = cachedHandle;
+        cachedHandle = handle;
+        return Error::NONE;
+    } else {
+        return Error::BAD_PARAMETER;
+    }
+}
+
+// when fromCache is true, look up in the cache; otherwise, update the cache
+Error ComposerHandleCache::getHandle(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
+                                     const native_handle_t** outHandle,
+                                     const native_handle** outReplacedHandle) {
+    if (fromCache) {
+        *outReplacedHandle = nullptr;
+        return lookupCache(slot, outHandle);
+    } else {
+        *outHandle = inHandle;
+        return updateCache(slot, inHandle, outReplacedHandle);
+    }
+}
+
+ComposerLayerResource::ComposerLayerResource(ComposerHandleImporter& importer,
+                                             uint32_t bufferCacheSize)
+    : mBufferCache(importer, ComposerHandleCache::HandleType::BUFFER, bufferCacheSize),
+      mSidebandStreamCache(importer, ComposerHandleCache::HandleType::STREAM, 1) {}
+
+Error ComposerLayerResource::getBuffer(uint32_t slot, bool fromCache,
+                                       const native_handle_t* inHandle,
+                                       const native_handle_t** outHandle,
+                                       const native_handle** outReplacedHandle) {
+    return mBufferCache.getHandle(slot, fromCache, inHandle, outHandle, outReplacedHandle);
+}
+
+Error ComposerLayerResource::getSidebandStream(uint32_t slot, bool fromCache,
+                                               const native_handle_t* inHandle,
+                                               const native_handle_t** outHandle,
+                                               const native_handle** outReplacedHandle) {
+    return mSidebandStreamCache.getHandle(slot, fromCache, inHandle, outHandle, outReplacedHandle);
+}
+
+ComposerDisplayResource::ComposerDisplayResource(DisplayType type, ComposerHandleImporter& importer,
+                                                 uint32_t outputBufferCacheSize)
+    : mType(type),
+      mClientTargetCache(importer),
+      mOutputBufferCache(importer, ComposerHandleCache::HandleType::BUFFER, outputBufferCacheSize),
+      mMustValidate(true) {}
+
+bool ComposerDisplayResource::initClientTargetCache(uint32_t cacheSize) {
+    return mClientTargetCache.initCache(ComposerHandleCache::HandleType::BUFFER, cacheSize);
+}
+
+bool ComposerDisplayResource::isVirtual() const {
+    return mType == DisplayType::VIRTUAL;
+}
+
+Error ComposerDisplayResource::getClientTarget(uint32_t slot, bool fromCache,
+                                               const native_handle_t* inHandle,
+                                               const native_handle_t** outHandle,
+                                               const native_handle** outReplacedHandle) {
+    return mClientTargetCache.getHandle(slot, fromCache, inHandle, outHandle, outReplacedHandle);
+}
+
+Error ComposerDisplayResource::getOutputBuffer(uint32_t slot, bool fromCache,
+                                               const native_handle_t* inHandle,
+                                               const native_handle_t** outHandle,
+                                               const native_handle** outReplacedHandle) {
+    return mOutputBufferCache.getHandle(slot, fromCache, inHandle, outHandle, outReplacedHandle);
+}
+
+bool ComposerDisplayResource::addLayer(Layer layer,
+                                       std::unique_ptr<ComposerLayerResource> layerResource) {
+    auto result = mLayerResources.emplace(layer, std::move(layerResource));
+    return result.second;
+}
+
+bool ComposerDisplayResource::removeLayer(Layer layer) {
+    return mLayerResources.erase(layer) > 0;
+}
+
+ComposerLayerResource* ComposerDisplayResource::findLayerResource(Layer layer) {
+    auto layerIter = mLayerResources.find(layer);
+    if (layerIter == mLayerResources.end()) {
+        return nullptr;
+    }
+
+    return layerIter->second.get();
+}
+
+std::vector<Layer> ComposerDisplayResource::getLayers() const {
+    std::vector<Layer> layers;
+    layers.reserve(mLayerResources.size());
+    for (const auto& layerKey : mLayerResources) {
+        layers.push_back(layerKey.first);
+    }
+    return layers;
+}
+
+void ComposerDisplayResource::setMustValidateState(bool mustValidate) {
+    mMustValidate = mustValidate;
+}
+
+bool ComposerDisplayResource::mustValidate() const {
+    return mMustValidate;
+}
+
+std::unique_ptr<ComposerResources> ComposerResources::create() {
+    auto resources = std::make_unique<ComposerResources>();
+    return resources->init() ? std::move(resources) : nullptr;
+}
+
+bool ComposerResources::init() {
+    return mImporter.init();
+}
+
+void ComposerResources::clear(RemoveDisplay removeDisplay) {
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    for (const auto& displayKey : mDisplayResources) {
+        Display display = displayKey.first;
+        const ComposerDisplayResource& displayResource = *displayKey.second;
+        removeDisplay(display, displayResource.isVirtual(), displayResource.getLayers());
+    }
+    mDisplayResources.clear();
+}
+
+Error ComposerResources::addPhysicalDisplay(Display display) {
+    auto displayResource = createDisplayResource(ComposerDisplayResource::DisplayType::PHYSICAL, 0);
+
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    auto result = mDisplayResources.emplace(display, std::move(displayResource));
+    return result.second ? Error::NONE : Error::BAD_DISPLAY;
+}
+
+Error ComposerResources::addVirtualDisplay(Display display, uint32_t outputBufferCacheSize) {
+    auto displayResource = createDisplayResource(ComposerDisplayResource::DisplayType::VIRTUAL,
+                                                 outputBufferCacheSize);
+
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    auto result = mDisplayResources.emplace(display, std::move(displayResource));
+    return result.second ? Error::NONE : Error::BAD_DISPLAY;
+}
+
+Error ComposerResources::removeDisplay(Display display) {
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    return mDisplayResources.erase(display) > 0 ? Error::NONE : Error::BAD_DISPLAY;
+}
+
+Error ComposerResources::setDisplayClientTargetCacheSize(Display display,
+                                                         uint32_t clientTargetCacheSize) {
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    ComposerDisplayResource* displayResource = findDisplayResourceLocked(display);
+    if (!displayResource) {
+        return Error::BAD_DISPLAY;
+    }
+
+    return displayResource->initClientTargetCache(clientTargetCacheSize) ? Error::NONE
+                                                                         : Error::BAD_PARAMETER;
+}
+
+Error ComposerResources::addLayer(Display display, Layer layer, uint32_t bufferCacheSize) {
+    auto layerResource = createLayerResource(bufferCacheSize);
+
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    ComposerDisplayResource* displayResource = findDisplayResourceLocked(display);
+    if (!displayResource) {
+        return Error::BAD_DISPLAY;
+    }
+
+    return displayResource->addLayer(layer, std::move(layerResource)) ? Error::NONE
+                                                                      : Error::BAD_LAYER;
+}
+
+Error ComposerResources::removeLayer(Display display, Layer layer) {
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    ComposerDisplayResource* displayResource = findDisplayResourceLocked(display);
+    if (!displayResource) {
+        return Error::BAD_DISPLAY;
+    }
+
+    return displayResource->removeLayer(layer) ? Error::NONE : Error::BAD_LAYER;
+}
+
+Error ComposerResources::getDisplayClientTarget(Display display, uint32_t slot, bool fromCache,
+                                                const native_handle_t* rawHandle,
+                                                const native_handle_t** outBufferHandle,
+                                                ReplacedHandle* outReplacedBuffer) {
+    return getHandle(display, 0, slot, Cache::CLIENT_TARGET, fromCache, rawHandle, outBufferHandle,
+                     outReplacedBuffer);
+}
+
+Error ComposerResources::getDisplayOutputBuffer(Display display, uint32_t slot, bool fromCache,
+                                                const native_handle_t* rawHandle,
+                                                const native_handle_t** outBufferHandle,
+                                                ReplacedHandle* outReplacedBuffer) {
+    return getHandle(display, 0, slot, Cache::OUTPUT_BUFFER, fromCache, rawHandle, outBufferHandle,
+                     outReplacedBuffer);
+}
+
+Error ComposerResources::getLayerBuffer(Display display, Layer layer, uint32_t slot, bool fromCache,
+                                        const native_handle_t* rawHandle,
+                                        const native_handle_t** outBufferHandle,
+                                        ReplacedHandle* outReplacedBuffer) {
+    return getHandle(display, layer, slot, Cache::LAYER_BUFFER, fromCache, rawHandle,
+                     outBufferHandle, outReplacedBuffer);
+}
+
+Error ComposerResources::getLayerSidebandStream(Display display, Layer layer,
+                                                const native_handle_t* rawHandle,
+                                                const native_handle_t** outStreamHandle,
+                                                ReplacedHandle* outReplacedStream) {
+    return getHandle(display, layer, 0, Cache::LAYER_SIDEBAND_STREAM, false, rawHandle,
+                     outStreamHandle, outReplacedStream);
+}
+
+void ComposerResources::setDisplayMustValidateState(Display display, bool mustValidate) {
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    auto* displayResource = findDisplayResourceLocked(display);
+    if (displayResource) {
+        displayResource->setMustValidateState(mustValidate);
+    }
+}
+
+bool ComposerResources::mustValidateDisplay(Display display) {
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    auto* displayResource = findDisplayResourceLocked(display);
+    if (displayResource) {
+        return displayResource->mustValidate();
+    }
+    return false;
+}
+
+std::unique_ptr<ComposerDisplayResource> ComposerResources::createDisplayResource(
+        ComposerDisplayResource::DisplayType type, uint32_t outputBufferCacheSize) {
+    return std::make_unique<ComposerDisplayResource>(type, mImporter, outputBufferCacheSize);
+}
+
+std::unique_ptr<ComposerLayerResource> ComposerResources::createLayerResource(
+        uint32_t bufferCacheSize) {
+    return std::make_unique<ComposerLayerResource>(mImporter, bufferCacheSize);
+}
+
+ComposerDisplayResource* ComposerResources::findDisplayResourceLocked(Display display) {
+    auto iter = mDisplayResources.find(display);
+    if (iter == mDisplayResources.end()) {
+        return nullptr;
+    }
+    return iter->second.get();
+}
+
+Error ComposerResources::getHandle(Display display, Layer layer, uint32_t slot, Cache cache,
+                                   bool fromCache, const native_handle_t* rawHandle,
+                                   const native_handle_t** outHandle,
+                                   ReplacedHandle* outReplacedHandle) {
+    Error error;
+
+    // import the raw handle (or ignore raw handle when fromCache is true)
+    const native_handle_t* importedHandle = nullptr;
+    if (!fromCache) {
+        error = (outReplacedHandle->isBuffer())
+                        ? mImporter.importBuffer(rawHandle, &importedHandle)
+                        : mImporter.importStream(rawHandle, &importedHandle);
+        if (error != Error::NONE) {
+            return error;
+        }
+    }
+
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+
+    // find display/layer resource
+    const bool needLayerResource = (cache == ComposerResources::Cache::LAYER_BUFFER ||
+                                    cache == ComposerResources::Cache::LAYER_SIDEBAND_STREAM);
+    ComposerDisplayResource* displayResource = findDisplayResourceLocked(display);
+    ComposerLayerResource* layerResource = (displayResource && needLayerResource)
+                                                   ? displayResource->findLayerResource(layer)
+                                                   : nullptr;
+
+    // lookup or update cache
+    const native_handle_t* replacedHandle = nullptr;
+    if (displayResource && (!needLayerResource || layerResource)) {
+        switch (cache) {
+            case ComposerResources::Cache::CLIENT_TARGET:
+                error = displayResource->getClientTarget(slot, fromCache, importedHandle, outHandle,
+                                                         &replacedHandle);
+                break;
+            case ComposerResources::Cache::OUTPUT_BUFFER:
+                error = displayResource->getOutputBuffer(slot, fromCache, importedHandle, outHandle,
+                                                         &replacedHandle);
+                break;
+            case ComposerResources::Cache::LAYER_BUFFER:
+                error = layerResource->getBuffer(slot, fromCache, importedHandle, outHandle,
+                                                 &replacedHandle);
+                break;
+            case ComposerResources::Cache::LAYER_SIDEBAND_STREAM:
+                error = layerResource->getSidebandStream(slot, fromCache, importedHandle, outHandle,
+                                                         &replacedHandle);
+                break;
+            default:
+                error = Error::BAD_PARAMETER;
+                break;
+        }
+
+        if (error != Error::NONE) {
+            ALOGW("invalid cache %d slot %d", int(cache), int(slot));
+        }
+    } else if (!displayResource) {
+        error = Error::BAD_DISPLAY;
+    } else {
+        error = Error::BAD_LAYER;
+    }
+
+    // clean up on errors
+    if (error != Error::NONE) {
+        if (!fromCache) {
+            if (outReplacedHandle->isBuffer()) {
+                mImporter.freeBuffer(importedHandle);
+            } else {
+                mImporter.freeStream(importedHandle);
+            }
+        }
+        return error;
+    }
+
+    outReplacedHandle->reset(&mImporter, replacedHandle);
+
+    return Error::NONE;
+}
+
+}  // namespace hal
+}  // namespace V2_1
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.1/utils/resources/include/composer-resources/2.1/ComposerResources.h b/graphics/composer/2.1/utils/resources/include/composer-resources/2.1/ComposerResources.h
new file mode 100644
index 0000000..3738278
--- /dev/null
+++ b/graphics/composer/2.1/utils/resources/include/composer-resources/2.1/ComposerResources.h
@@ -0,0 +1,260 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#ifndef LOG_TAG
+#warning "ComposerResources.h included without LOG_TAG"
+#endif
+
+#include <memory>
+#include <mutex>
+#include <unordered_map>
+#include <vector>
+
+#include <android/hardware/graphics/composer/2.1/types.h>
+
+#include <android/hardware/graphics/mapper/2.0/IMapper.h>
+#include <android/hardware/graphics/mapper/3.0/IMapper.h>
+#include <android/hardware/graphics/mapper/4.0/IMapper.h>
+#include <log/log.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_1 {
+namespace hal {
+
+// wrapper for IMapper to import buffers and sideband streams
+class ComposerHandleImporter {
+  public:
+    bool init();
+
+    Error importBuffer(const native_handle_t* rawHandle, const native_handle_t** outBufferHandle);
+    void freeBuffer(const native_handle_t* bufferHandle);
+    Error importStream(const native_handle_t* rawHandle, const native_handle_t** outStreamHandle);
+    void freeStream(const native_handle_t* streamHandle);
+
+  private:
+    sp<mapper::V2_0::IMapper> mMapper2;
+    sp<mapper::V3_0::IMapper> mMapper3;
+    sp<mapper::V4_0::IMapper> mMapper4;
+};
+
+class ComposerHandleCache {
+  public:
+    enum class HandleType {
+        INVALID,
+        BUFFER,
+        STREAM,
+    };
+
+    ComposerHandleCache(ComposerHandleImporter& importer, HandleType type, uint32_t cacheSize);
+
+    // must be initialized later with initCache
+    ComposerHandleCache(ComposerHandleImporter& importer);
+
+    ~ComposerHandleCache();
+
+    ComposerHandleCache(const ComposerHandleCache&) = delete;
+    ComposerHandleCache& operator=(const ComposerHandleCache&) = delete;
+
+    bool initCache(HandleType type, uint32_t cacheSize);
+    Error lookupCache(uint32_t slot, const native_handle_t** outHandle);
+    Error updateCache(uint32_t slot, const native_handle_t* handle,
+                      const native_handle** outReplacedHandle);
+
+    // when fromCache is true, look up in the cache; otherwise, update the cache
+    Error getHandle(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
+                    const native_handle_t** outHandle, const native_handle** outReplacedHandle);
+
+  private:
+    ComposerHandleImporter& mImporter;
+    HandleType mHandleType = HandleType::INVALID;
+    std::vector<const native_handle_t*> mHandles;
+};
+
+// layer resource
+class ComposerLayerResource {
+  public:
+    ComposerLayerResource(ComposerHandleImporter& importer, uint32_t bufferCacheSize);
+
+    virtual ~ComposerLayerResource() = default;
+
+    Error getBuffer(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
+                    const native_handle_t** outHandle, const native_handle** outReplacedHandle);
+    Error getSidebandStream(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
+                            const native_handle_t** outHandle,
+                            const native_handle** outReplacedHandle);
+
+  protected:
+    ComposerHandleCache mBufferCache;
+    ComposerHandleCache mSidebandStreamCache;
+};
+
+// display resource
+class ComposerDisplayResource {
+  public:
+    enum class DisplayType {
+        PHYSICAL,
+        VIRTUAL,
+    };
+
+    virtual ~ComposerDisplayResource() = default;
+
+    ComposerDisplayResource(DisplayType type, ComposerHandleImporter& importer,
+                            uint32_t outputBufferCacheSize);
+
+    bool initClientTargetCache(uint32_t cacheSize);
+
+    bool isVirtual() const;
+
+    Error getClientTarget(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
+                          const native_handle_t** outHandle,
+                          const native_handle** outReplacedHandle);
+
+    Error getOutputBuffer(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
+                          const native_handle_t** outHandle,
+                          const native_handle** outReplacedHandle);
+
+    bool addLayer(Layer layer, std::unique_ptr<ComposerLayerResource> layerResource);
+    bool removeLayer(Layer layer);
+    ComposerLayerResource* findLayerResource(Layer layer);
+    std::vector<Layer> getLayers() const;
+
+    void setMustValidateState(bool mustValidate);
+
+    bool mustValidate() const;
+
+  protected:
+    const DisplayType mType;
+    ComposerHandleCache mClientTargetCache;
+    ComposerHandleCache mOutputBufferCache;
+    bool mMustValidate;
+
+    std::unordered_map<Layer, std::unique_ptr<ComposerLayerResource>> mLayerResources;
+};
+
+class ComposerResources {
+  public:
+    static std::unique_ptr<ComposerResources> create();
+
+    ComposerResources() = default;
+    virtual ~ComposerResources() = default;
+
+    bool init();
+
+    using RemoveDisplay =
+            std::function<void(Display display, bool isVirtual, const std::vector<Layer>& layers)>;
+    void clear(RemoveDisplay removeDisplay);
+
+    Error addPhysicalDisplay(Display display);
+    Error addVirtualDisplay(Display display, uint32_t outputBufferCacheSize);
+
+    Error removeDisplay(Display display);
+
+    Error setDisplayClientTargetCacheSize(Display display, uint32_t clientTargetCacheSize);
+
+    Error addLayer(Display display, Layer layer, uint32_t bufferCacheSize);
+    Error removeLayer(Display display, Layer layer);
+
+    void setDisplayMustValidateState(Display display, bool mustValidate);
+
+    bool mustValidateDisplay(Display display);
+
+    // When a buffer in the cache is replaced by a new one, we must keep it
+    // alive until it has been replaced in ComposerHal.
+    class ReplacedHandle {
+      public:
+        explicit ReplacedHandle(bool isBuffer) : mIsBuffer(isBuffer) {}
+        ReplacedHandle(const ReplacedHandle&) = delete;
+        ReplacedHandle& operator=(const ReplacedHandle&) = delete;
+
+        ~ReplacedHandle() { reset(); }
+
+        bool isBuffer() { return mIsBuffer; }
+
+        void reset(ComposerHandleImporter* importer = nullptr,
+                   const native_handle_t* handle = nullptr) {
+            if (mHandle) {
+                if (mIsBuffer) {
+                    mImporter->freeBuffer(mHandle);
+                } else {
+                    mImporter->freeStream(mHandle);
+                }
+            }
+
+            mImporter = importer;
+            mHandle = handle;
+        }
+
+      private:
+        bool mIsBuffer;
+        ComposerHandleImporter* mImporter = nullptr;
+        const native_handle_t* mHandle = nullptr;
+    };
+
+    Error getDisplayClientTarget(Display display, uint32_t slot, bool fromCache,
+                                 const native_handle_t* rawHandle,
+                                 const native_handle_t** outBufferHandle,
+                                 ReplacedHandle* outReplacedBuffer);
+
+    Error getDisplayOutputBuffer(Display display, uint32_t slot, bool fromCache,
+                                 const native_handle_t* rawHandle,
+                                 const native_handle_t** outBufferHandle,
+                                 ReplacedHandle* outReplacedBuffer);
+
+    Error getLayerBuffer(Display display, Layer layer, uint32_t slot, bool fromCache,
+                         const native_handle_t* rawHandle, const native_handle_t** outBufferHandle,
+                         ReplacedHandle* outReplacedBuffer);
+
+    Error getLayerSidebandStream(Display display, Layer layer, const native_handle_t* rawHandle,
+                                 const native_handle_t** outStreamHandle,
+                                 ReplacedHandle* outReplacedStream);
+
+  protected:
+    virtual std::unique_ptr<ComposerDisplayResource> createDisplayResource(
+            ComposerDisplayResource::DisplayType type, uint32_t outputBufferCacheSize);
+
+    virtual std::unique_ptr<ComposerLayerResource> createLayerResource(uint32_t bufferCacheSize);
+
+    ComposerDisplayResource* findDisplayResourceLocked(Display display);
+
+    ComposerHandleImporter mImporter;
+
+    std::mutex mDisplayResourcesMutex;
+    std::unordered_map<Display, std::unique_ptr<ComposerDisplayResource>> mDisplayResources;
+
+  private:
+    enum class Cache {
+        CLIENT_TARGET,
+        OUTPUT_BUFFER,
+        LAYER_BUFFER,
+        LAYER_SIDEBAND_STREAM,
+    };
+
+    Error getHandle(Display display, Layer layer, uint32_t slot, Cache cache, bool fromCache,
+                    const native_handle_t* rawHandle, const native_handle_t** outHandle,
+                    ReplacedHandle* outReplacedHandle);
+};
+
+}  // namespace hal
+}  // namespace V2_1
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.1/utils/vts/Android.bp b/graphics/composer/2.1/utils/vts/Android.bp
index fcb327f..cdc0f35 100644
--- a/graphics/composer/2.1/utils/vts/Android.bp
+++ b/graphics/composer/2.1/utils/vts/Android.bp
@@ -27,10 +27,21 @@
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.mapper@2.0-vts",
         "android.hardware.graphics.mapper@3.0-vts",
+        "android.hardware.graphics.mapper@4.0-vts",
+    ],
+    export_static_lib_headers: [
+        "VtsHalHidlTargetTestBase",
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.mapper@2.0-vts",
+        "android.hardware.graphics.mapper@3.0-vts",
+        "android.hardware.graphics.mapper@4.0-vts",
     ],
     header_libs: [
         "android.hardware.graphics.composer@2.1-command-buffer",
     ],
+    export_header_lib_headers: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+    ],
     cflags: [
         "-O0",
         "-g",
diff --git a/graphics/composer/2.1/utils/vts/ComposerVts.cpp b/graphics/composer/2.1/utils/vts/ComposerVts.cpp
index c5d5823..a0745ce 100644
--- a/graphics/composer/2.1/utils/vts/ComposerVts.cpp
+++ b/graphics/composer/2.1/utils/vts/ComposerVts.cpp
@@ -317,11 +317,16 @@
 
 Gralloc::Gralloc() {
     [this] {
-        ASSERT_NO_FATAL_FAILURE(mGralloc3 = std::make_shared<Gralloc3>("default", "default",
+        ASSERT_NO_FATAL_FAILURE(mGralloc4 = std::make_shared<Gralloc4>("default", "default",
                                                                        /*errOnFailure=*/false));
-        if (mGralloc3->getAllocator() == nullptr || mGralloc3->getMapper() == nullptr) {
-            mGralloc3 = nullptr;
-            ASSERT_NO_FATAL_FAILURE(mGralloc2 = std::make_shared<Gralloc2>());
+        if (mGralloc4->getAllocator() == nullptr || mGralloc4->getMapper() == nullptr) {
+            mGralloc4 = nullptr;
+            ASSERT_NO_FATAL_FAILURE(mGralloc3 = std::make_shared<Gralloc3>("default", "default",
+                                                                           /*errOnFailure=*/false));
+            if (mGralloc3->getAllocator() == nullptr || mGralloc3->getMapper() == nullptr) {
+                mGralloc3 = nullptr;
+                ASSERT_NO_FATAL_FAILURE(mGralloc2 = std::make_shared<Gralloc2>());
+            }
         }
     }();
 }
@@ -329,7 +334,15 @@
 const native_handle_t* Gralloc::allocate(uint32_t width, uint32_t height, uint32_t layerCount,
                                          PixelFormat format, uint64_t usage, bool import,
                                          uint32_t* outStride) {
-    if (mGralloc3) {
+    if (mGralloc4) {
+        IMapper4::BufferDescriptorInfo info{};
+        info.width = width;
+        info.height = height;
+        info.layerCount = layerCount;
+        info.format = static_cast<android::hardware::graphics::common::V1_2::PixelFormat>(format);
+        info.usage = usage;
+        return mGralloc4->allocate(info, import, outStride);
+    } else if (mGralloc3) {
         IMapper3::BufferDescriptorInfo info{};
         info.width = width;
         info.height = height;
@@ -350,7 +363,17 @@
 
 void* Gralloc::lock(const native_handle_t* bufferHandle, uint64_t cpuUsage,
                     const AccessRegion& accessRegionRect, int acquireFence) {
-    if (mGralloc3) {
+    if (mGralloc4) {
+        IMapper4::Rect accessRegion;
+        accessRegion.left = accessRegionRect.left;
+        accessRegion.top = accessRegionRect.top;
+        accessRegion.width = accessRegionRect.width;
+        accessRegion.height = accessRegionRect.height;
+        int32_t bytesPerPixel;
+        int32_t bytesPerStride;
+        return mGralloc4->lock(bufferHandle, cpuUsage, accessRegion, acquireFence, &bytesPerPixel,
+                               &bytesPerStride);
+    } else if (mGralloc3) {
         IMapper3::Rect accessRegion;
         accessRegion.left = accessRegionRect.left;
         accessRegion.top = accessRegionRect.top;
@@ -371,7 +394,9 @@
 }
 
 int Gralloc::unlock(const native_handle_t* bufferHandle) {
-    if (mGralloc3) {
+    if (mGralloc4) {
+        return mGralloc4->unlock(bufferHandle);
+    } else if (mGralloc3) {
         return mGralloc3->unlock(bufferHandle);
     } else {
         return mGralloc2->unlock(bufferHandle);
@@ -379,7 +404,9 @@
 }
 
 void Gralloc::freeBuffer(const native_handle_t* bufferHandle) {
-    if (mGralloc3) {
+    if (mGralloc4) {
+        mGralloc4->freeBuffer(bufferHandle);
+    } else if (mGralloc3) {
         mGralloc3->freeBuffer(bufferHandle);
     } else {
         mGralloc2->freeBuffer(bufferHandle);
diff --git a/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/ComposerVts.h b/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/ComposerVts.h
index 7811048..63aa713 100644
--- a/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/ComposerVts.h
+++ b/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/ComposerVts.h
@@ -27,6 +27,7 @@
 #include <composer-vts/2.1/TestCommandReader.h>
 #include <mapper-vts/2.0/MapperVts.h>
 #include <mapper-vts/3.0/MapperVts.h>
+#include <mapper-vts/4.0/MapperVts.h>
 #include <utils/StrongPointer.h>
 
 #include "gtest/gtest.h"
@@ -44,8 +45,10 @@
 using android::hardware::graphics::common::V1_0::PixelFormat;
 using IMapper2 = android::hardware::graphics::mapper::V2_0::IMapper;
 using IMapper3 = android::hardware::graphics::mapper::V3_0::IMapper;
+using IMapper4 = android::hardware::graphics::mapper::V4_0::IMapper;
 using Gralloc2 = android::hardware::graphics::mapper::V2_0::vts::Gralloc;
 using Gralloc3 = android::hardware::graphics::mapper::V3_0::vts::Gralloc;
+using Gralloc4 = android::hardware::graphics::mapper::V4_0::vts::Gralloc;
 
 class ComposerClient;
 
@@ -54,6 +57,7 @@
    public:
     Composer();
     explicit Composer(const std::string& name);
+    explicit Composer(const sp<IComposer>& composer);
 
     sp<IComposer> getRaw() const;
 
@@ -64,9 +68,6 @@
     std::string dumpDebugInfo();
     std::unique_ptr<ComposerClient> createClient();
 
-   protected:
-    explicit Composer(const sp<IComposer>& composer);
-
    private:
     const sp<IComposer> mComposer;
 
@@ -153,6 +154,7 @@
   protected:
     std::shared_ptr<Gralloc2> mGralloc2 = nullptr;
     std::shared_ptr<Gralloc3> mGralloc3 = nullptr;
+    std::shared_ptr<Gralloc4> mGralloc4 = nullptr;
 };
 
 }  // namespace vts
diff --git a/graphics/composer/2.1/vts/functional/Android.bp b/graphics/composer/2.1/vts/functional/Android.bp
index d54da60..5f1ed63 100644
--- a/graphics/composer/2.1/vts/functional/Android.bp
+++ b/graphics/composer/2.1/vts/functional/Android.bp
@@ -27,15 +27,21 @@
     static_libs: [
         "android.hardware.graphics.allocator@2.0",
         "android.hardware.graphics.allocator@3.0",
+        "android.hardware.graphics.allocator@4.0",
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.1-vts",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@2.0-vts",
+        "android.hardware.graphics.mapper@2.1",
+        "android.hardware.graphics.mapper@2.1-vts",
         "android.hardware.graphics.mapper@3.0",
         "android.hardware.graphics.mapper@3.0-vts",
+        "android.hardware.graphics.mapper@4.0",
+        "android.hardware.graphics.mapper@4.0-vts",
     ],
     header_libs: [
         "android.hardware.graphics.composer@2.1-command-buffer",
     ],
-    test_suites: ["general-tests"],
+    disable_framework: true,
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/graphics/composer/2.1/vts/functional/VtsHalGraphicsComposerV2_1TargetTest.cpp b/graphics/composer/2.1/vts/functional/VtsHalGraphicsComposerV2_1TargetTest.cpp
index fa5ace6..b92279d 100644
--- a/graphics/composer/2.1/vts/functional/VtsHalGraphicsComposerV2_1TargetTest.cpp
+++ b/graphics/composer/2.1/vts/functional/VtsHalGraphicsComposerV2_1TargetTest.cpp
@@ -20,11 +20,14 @@
 #include <composer-vts/2.1/ComposerVts.h>
 #include <composer-vts/2.1/GraphicsComposerCallback.h>
 #include <composer-vts/2.1/TestCommandReader.h>
+#include <gtest/gtest.h>
+#include <hardware/hwcomposer2.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 #include <mapper-vts/2.0/MapperVts.h>
 #include <mapper-vts/3.0/MapperVts.h>
+#include <mapper-vts/4.0/MapperVts.h>
 
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
 #include <unistd.h>
 
 #include <algorithm>
@@ -50,30 +53,11 @@
 using android::hardware::graphics::common::V1_0::Transform;
 using GrallocError = android::hardware::graphics::mapper::V2_0::Error;
 
-// Test environment for graphics.composer
-class GraphicsComposerHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static GraphicsComposerHidlEnvironment* Instance() {
-        static GraphicsComposerHidlEnvironment* instance = new GraphicsComposerHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<IComposer>(); }
-
-   private:
-    GraphicsComposerHidlEnvironment() {}
-
-    GTEST_DISALLOW_COPY_AND_ASSIGN_(GraphicsComposerHidlEnvironment);
-};
-
-class GraphicsComposerHidlTest : public ::testing::VtsHalHidlTargetTestBase {
-   protected:
+class GraphicsComposerHidlTest : public ::testing::TestWithParam<std::string> {
+  protected:
     void SetUp() override {
-        VtsHalHidlTargetTestBase::SetUp();
         ASSERT_NO_FATAL_FAILURE(
-            mComposer = std::make_unique<Composer>(
-                GraphicsComposerHidlEnvironment::Instance()->getServiceName<IComposer>()));
+                mComposer = std::make_unique<Composer>(IComposer::getService(GetParam())));
         ASSERT_NO_FATAL_FAILURE(mComposerClient = mComposer->createClient());
 
         mComposerCallback = new GraphicsComposerCallback;
@@ -100,7 +84,6 @@
             EXPECT_EQ(0, mComposerCallback->getInvalidRefreshCount());
             EXPECT_EQ(0, mComposerCallback->getInvalidVsyncCount());
         }
-        VtsHalHidlTargetTestBase::TearDown();
     }
 
     // returns an invalid display id (one that has not been registered to a
@@ -149,7 +132,7 @@
  *
  * Test that IComposer::getCapabilities returns no invalid capabilities.
  */
-TEST_F(GraphicsComposerHidlTest, GetCapabilities) {
+TEST_P(GraphicsComposerHidlTest, GetCapabilities) {
     auto capabilities = mComposer->getCapabilities();
     ASSERT_EQ(capabilities.end(),
               std::find(capabilities.begin(), capabilities.end(), IComposer::Capability::INVALID));
@@ -158,7 +141,7 @@
 /**
  * Test IComposer::dumpDebugInfo.
  */
-TEST_F(GraphicsComposerHidlTest, DumpDebugInfo) {
+TEST_P(GraphicsComposerHidlTest, DumpDebugInfo) {
     mComposer->dumpDebugInfo();
 }
 
@@ -167,7 +150,7 @@
  *
  * Test that IComposerClient is a singleton.
  */
-TEST_F(GraphicsComposerHidlTest, CreateClientSingleton) {
+TEST_P(GraphicsComposerHidlTest, CreateClientSingleton) {
     mComposer->getRaw()->createClient(
         [&](const auto& tmpError, const auto&) { EXPECT_EQ(Error::NO_RESOURCES, tmpError); });
 }
@@ -178,7 +161,7 @@
  *
  * Test that virtual displays can be created and has the correct display type.
  */
-TEST_F(GraphicsComposerHidlTest, CreateVirtualDisplay) {
+TEST_P(GraphicsComposerHidlTest, CreateVirtualDisplay) {
     if (mComposerClient->getMaxVirtualDisplayCount() == 0) {
         GTEST_SUCCEED() << "no virtual display support";
         return;
@@ -203,7 +186,7 @@
  * Test that passing a bad display handle to destroyVirtualDisplay
  * returns a BAD_DISPLAY error
  */
-TEST_F(GraphicsComposerHidlTest, DestroyVirtualDisplayBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, DestroyVirtualDisplayBadDisplay) {
     if (mComposerClient->getMaxVirtualDisplayCount() == 0) {
         GTEST_SUCCEED() << "no virtual display support";
         return;
@@ -218,7 +201,7 @@
  *
  * Test that layers can be created and destroyed.
  */
-TEST_F(GraphicsComposerHidlTest, CreateLayer) {
+TEST_P(GraphicsComposerHidlTest, CreateLayer) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -232,7 +215,7 @@
  * Test that passing in an invalid display handle to createLayer returns
  * BAD_DISPLAY.
  */
-TEST_F(GraphicsComposerHidlTest, CreateLayerBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, CreateLayerBadDisplay) {
     Error error;
     mComposerClient->getRaw()->createLayer(
         mInvalidDisplayId, kBufferSlotCount,
@@ -246,7 +229,7 @@
  * Test that passing in an invalid display handle to destroyLayer returns
  * BAD_DISPLAY
  */
-TEST_F(GraphicsComposerHidlTest, DestroyLayerBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, DestroyLayerBadDisplay) {
     Error error;
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
@@ -265,7 +248,7 @@
  * Test that passing in an invalid layer handle to destroyLayer returns
  * BAD_LAYER
  */
-TEST_F(GraphicsComposerHidlTest, DestroyLayerBadLayerError) {
+TEST_P(GraphicsComposerHidlTest, DestroyLayerBadLayerError) {
     // We haven't created any layers yet, so any id should be invalid
     Error error = mComposerClient->getRaw()->destroyLayer(mPrimaryDisplay, 1);
 
@@ -278,7 +261,7 @@
  * Test that passing in a bad display handle to getActiveConfig generates a
  * BAD_DISPLAY error
  */
-TEST_F(GraphicsComposerHidlTest, GetActiveConfigBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, GetActiveConfigBadDisplay) {
     Error error;
     mComposerClient->getRaw()->getActiveConfig(
         mInvalidDisplayId, [&](const auto& tmpOutError, const auto&) { error = tmpOutError; });
@@ -291,7 +274,7 @@
  * Test IComposerClient::getDisplayConfigs returns no error
  * when passed in a valid display
  */
-TEST_F(GraphicsComposerHidlTest, GetDisplayConfig) {
+TEST_P(GraphicsComposerHidlTest, GetDisplayConfig) {
     std::vector<Config> configs;
     ASSERT_NO_FATAL_FAILURE(configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay));
 }
@@ -302,7 +285,7 @@
  * Test IComposerClient::getDisplayConfigs returns BAD_DISPLAY
  * when passed in an invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, GetDisplayConfigBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, GetDisplayConfigBadDisplay) {
     Error error;
     mComposerClient->getRaw()->getDisplayConfigs(
         mInvalidDisplayId, [&](const auto& tmpOutError, const auto&) { error = tmpOutError; });
@@ -312,7 +295,7 @@
 /**
  * Test IComposerClient::getDisplayName.
  */
-TEST_F(GraphicsComposerHidlTest, GetDisplayName) {
+TEST_P(GraphicsComposerHidlTest, GetDisplayName) {
     mComposerClient->getDisplayName(mPrimaryDisplay);
 }
 
@@ -322,7 +305,7 @@
  * Test that IComposerClient::getDisplayType returns the correct display type
  * for the primary display.
  */
-TEST_F(GraphicsComposerHidlTest, GetDisplayType) {
+TEST_P(GraphicsComposerHidlTest, GetDisplayType) {
     ASSERT_EQ(IComposerClient::DisplayType::PHYSICAL,
               mComposerClient->getDisplayType(mPrimaryDisplay));
 }
@@ -333,7 +316,7 @@
  * Test that IComposerClient::getClientTargetSupport returns true for the
  * required client targets.
  */
-TEST_F(GraphicsComposerHidlTest, GetClientTargetSupport) {
+TEST_P(GraphicsComposerHidlTest, GetClientTargetSupport) {
     std::vector<Config> configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay);
     for (auto config : configs) {
         int32_t width = mComposerClient->getDisplayAttribute(mPrimaryDisplay, config,
@@ -356,7 +339,7 @@
  * Test that IComposerClient::getClientTargetSupport returns BAD_DISPLAY when
  * passed an invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, GetClientTargetSupportBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, GetClientTargetSupportBadDisplay) {
     std::vector<Config> configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay);
     for (auto config : configs) {
         int32_t width = mComposerClient->getDisplayAttribute(mPrimaryDisplay, config,
@@ -380,7 +363,7 @@
  * Test that IComposerClient::getDisplayAttribute succeeds for the required
  * formats, and succeeds or fails correctly for optional attributes.
  */
-TEST_F(GraphicsComposerHidlTest, GetDisplayAttribute) {
+TEST_P(GraphicsComposerHidlTest, GetDisplayAttribute) {
     std::vector<Config> configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay);
     for (auto config : configs) {
         const std::array<IComposerClient::Attribute, 3> requiredAttributes = {{
@@ -406,7 +389,7 @@
 /**
  * Test IComposerClient::getHdrCapabilities.
  */
-TEST_F(GraphicsComposerHidlTest, GetHdrCapabilities) {
+TEST_P(GraphicsComposerHidlTest, GetHdrCapabilities) {
     float maxLuminance;
     float maxAverageLuminance;
     float minLuminance;
@@ -417,7 +400,7 @@
 /**
  * Test IComposerClient::setClientTargetSlotCount.
  */
-TEST_F(GraphicsComposerHidlTest, SetClientTargetSlotCount) {
+TEST_P(GraphicsComposerHidlTest, SetClientTargetSlotCount) {
     mComposerClient->setClientTargetSlotCount(mPrimaryDisplay, kBufferSlotCount);
 }
 
@@ -427,7 +410,7 @@
  * Test that IComposerClient::setActiveConfig succeeds for all display
  * configs.
  */
-TEST_F(GraphicsComposerHidlTest, SetActiveConfig) {
+TEST_P(GraphicsComposerHidlTest, SetActiveConfig) {
     std::vector<Config> configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay);
     for (auto config : configs) {
         mComposerClient->setActiveConfig(mPrimaryDisplay, config);
@@ -441,7 +424,7 @@
  * Test that config set during IComposerClient::setActiveConfig is maintained
  * during a display on/off power cycle
  */
-TEST_F(GraphicsComposerHidlTest, SetActiveConfigPowerCycle) {
+TEST_P(GraphicsComposerHidlTest, SetActiveConfigPowerCycle) {
     ASSERT_NO_FATAL_FAILURE(
         mComposerClient->setPowerMode(mPrimaryDisplay, IComposerClient::PowerMode::OFF));
     ASSERT_NO_FATAL_FAILURE(
@@ -465,7 +448,7 @@
  *
  * Test that IComposerClient::getColorMode always returns ColorMode::NATIVE
  */
-TEST_F(GraphicsComposerHidlTest, GetColorModes) {
+TEST_P(GraphicsComposerHidlTest, GetColorModes) {
     std::vector<ColorMode> modes = mComposerClient->getColorModes(mPrimaryDisplay);
     auto nativeModeLocation = std::find(modes.begin(), modes.end(), ColorMode::NATIVE);
 
@@ -477,7 +460,7 @@
  *
  * Test that IComposerClient::setColorMode succeeds for all color modes.
  */
-TEST_F(GraphicsComposerHidlTest, SetColorMode) {
+TEST_P(GraphicsComposerHidlTest, SetColorMode) {
     std::unordered_set<ColorMode> validModes;
     for (auto mode : hidl_enum_range<ColorMode>()) {
         validModes.insert(mode);
@@ -497,7 +480,7 @@
  * Test that IComposerClient::setColorMode returns BAD_DISPLAY for
  * an invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, SetColorModeBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, SetColorModeBadDisplay) {
     std::vector<ColorMode> modes = mComposerClient->getColorModes(mPrimaryDisplay);
     for (auto mode : modes) {
         Error error = mComposerClient->getRaw()->setColorMode(mInvalidDisplayId, mode);
@@ -511,7 +494,7 @@
  * Test that IComposerClient::setColorMode returns BAD_PARAMETER when passed in
  * an invalid color mode
  */
-TEST_F(GraphicsComposerHidlTest, SetColorModeBadParameter) {
+TEST_P(GraphicsComposerHidlTest, SetColorModeBadParameter) {
     Error error =
         mComposerClient->getRaw()->setColorMode(mPrimaryDisplay, static_cast<ColorMode>(-1));
     ASSERT_EQ(Error::BAD_PARAMETER, error);
@@ -523,7 +506,7 @@
  * Test that IComposerClient::getDozeSupport returns
  * BAD_DISPLAY when passed an invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, GetDozeSupportBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, GetDozeSupportBadDisplay) {
     Error error;
     mComposerClient->getRaw()->getDozeSupport(
         mInvalidDisplayId, [&](const auto& tmpOutError, const auto&) { error = tmpOutError; });
@@ -535,7 +518,7 @@
  *
  * Test that IComposerClient::setPowerMode succeeds for all power modes.
  */
-TEST_F(GraphicsComposerHidlTest, SetPowerMode) {
+TEST_P(GraphicsComposerHidlTest, SetPowerMode) {
     std::vector<IComposerClient::PowerMode> modes;
     modes.push_back(IComposerClient::PowerMode::OFF);
 
@@ -558,7 +541,7 @@
  * Test IComposerClient::setPowerMode succeeds with different
  * orderings of power modes
  */
-TEST_F(GraphicsComposerHidlTest, SetPowerModeVariations) {
+TEST_P(GraphicsComposerHidlTest, SetPowerModeVariations) {
     std::vector<IComposerClient::PowerMode> modes;
     modes.push_back(IComposerClient::PowerMode::OFF);
     modes.push_back(IComposerClient::PowerMode::ON);
@@ -609,7 +592,7 @@
  * Test IComposerClient::setPowerMode returns BAD_DISPLAY when passed an invalid
  * display handle
  */
-TEST_F(GraphicsComposerHidlTest, SetPowerModeBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, SetPowerModeBadDisplay) {
     Error error =
         mComposerClient->getRaw()->setPowerMode(mInvalidDisplayId, IComposerClient::PowerMode::ON);
     ASSERT_EQ(Error::BAD_DISPLAY, error);
@@ -621,7 +604,7 @@
  * Test that IComposerClient::setPowerMode returns UNSUPPORTED when passed DOZE
  * or DOZE_SUSPEND on devices that do not support DOZE/DOZE_SUSPEND
  */
-TEST_F(GraphicsComposerHidlTest, SetPowerModeUnsupported) {
+TEST_P(GraphicsComposerHidlTest, SetPowerModeUnsupported) {
     if (!mComposerClient->getDozeSupport(mPrimaryDisplay)) {
         Error error = mComposerClient->getRaw()->setPowerMode(mPrimaryDisplay,
                                                               IComposerClient::PowerMode::DOZE);
@@ -639,7 +622,7 @@
  * Tests that IComposerClient::setPowerMode returns BAD_PARAMETER when passed an invalid
  * PowerMode
  */
-TEST_F(GraphicsComposerHidlTest, SetPowerModeBadParameter) {
+TEST_P(GraphicsComposerHidlTest, SetPowerModeBadParameter) {
     Error error = mComposerClient->getRaw()->setPowerMode(
         mPrimaryDisplay, static_cast<IComposerClient::PowerMode>(-1));
     ASSERT_EQ(Error::BAD_PARAMETER, error);
@@ -651,7 +634,7 @@
  * Test that IComposerClient::setVsyncEnabled succeeds and there is no
  * spurious vsync events.
  */
-TEST_F(GraphicsComposerHidlTest, SetVsyncEnabled) {
+TEST_P(GraphicsComposerHidlTest, SetVsyncEnabled) {
     mComposerCallback->setVsyncAllowed(true);
 
     mComposerClient->setVsyncEnabled(mPrimaryDisplay, true);
@@ -703,7 +686,7 @@
 /**
  * Test IComposerClient::Command::SET_COLOR_TRANSFORM.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_COLOR_TRANSFORM) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_COLOR_TRANSFORM) {
     const std::array<float, 16> identity = {{
         1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f,
         1.0f,
@@ -718,7 +701,7 @@
 /**
  * Test IComposerClient::Command::SET_CLIENT_TARGET.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_CLIENT_TARGET) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_CLIENT_TARGET) {
     mComposerClient->setClientTargetSlotCount(mPrimaryDisplay, kBufferSlotCount);
 
     mWriter->selectDisplay(mPrimaryDisplay);
@@ -731,7 +714,7 @@
 /**
  * Test IComposerClient::Command::SET_OUTPUT_BUFFER.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_OUTPUT_BUFFER) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_OUTPUT_BUFFER) {
     if (mComposerClient->getMaxVirtualDisplayCount() == 0) {
         GTEST_SUCCEED() << "no virtual display support";
         return;
@@ -754,7 +737,7 @@
 /**
  * Test IComposerClient::Command::VALIDATE_DISPLAY.
  */
-TEST_F(GraphicsComposerHidlCommandTest, VALIDATE_DISPLAY) {
+TEST_P(GraphicsComposerHidlCommandTest, VALIDATE_DISPLAY) {
     mWriter->selectDisplay(mPrimaryDisplay);
     mWriter->validateDisplay();
     execute();
@@ -763,7 +746,7 @@
 /**
  * Test IComposerClient::Command::ACCEPT_DISPLAY_CHANGES.
  */
-TEST_F(GraphicsComposerHidlCommandTest, ACCEPT_DISPLAY_CHANGES) {
+TEST_P(GraphicsComposerHidlCommandTest, ACCEPT_DISPLAY_CHANGES) {
     mWriter->selectDisplay(mPrimaryDisplay);
     mWriter->validateDisplay();
     mWriter->acceptDisplayChanges();
@@ -773,7 +756,7 @@
 /**
  * Test IComposerClient::Command::PRESENT_DISPLAY.
  */
-TEST_F(GraphicsComposerHidlCommandTest, PRESENT_DISPLAY) {
+TEST_P(GraphicsComposerHidlCommandTest, PRESENT_DISPLAY) {
     mWriter->selectDisplay(mPrimaryDisplay);
     mWriter->validateDisplay();
     mWriter->presentDisplay();
@@ -787,7 +770,13 @@
  * additional call to validateDisplay when only the layer buffer handle and
  * surface damage have been set
  */
-TEST_F(GraphicsComposerHidlCommandTest, PRESENT_DISPLAY_NO_LAYER_STATE_CHANGES) {
+TEST_P(GraphicsComposerHidlCommandTest, PRESENT_DISPLAY_NO_LAYER_STATE_CHANGES) {
+    if (!mComposer->hasCapability(
+                static_cast<IComposer::Capability>(HWC2_CAPABILITY_SKIP_VALIDATE))) {
+        std::cout << "Device does not have skip validate capability, skipping" << std::endl;
+        GTEST_SUCCEED();
+        return;
+    }
     mWriter->selectDisplay(mPrimaryDisplay);
     mComposerClient->setPowerMode(mPrimaryDisplay, IComposerClient::PowerMode::ON);
     mComposerClient->setColorMode(mPrimaryDisplay, ColorMode::NATIVE);
@@ -837,7 +826,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_CURSOR_POSITION.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_CURSOR_POSITION) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_CURSOR_POSITION) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -879,7 +868,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_BUFFER.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_BUFFER) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_BUFFER) {
     auto handle = allocate();
     ASSERT_NE(nullptr, handle);
 
@@ -896,7 +885,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_SURFACE_DAMAGE.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_SURFACE_DAMAGE) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_SURFACE_DAMAGE) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -915,7 +904,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_BLEND_MODE.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_BLEND_MODE) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_BLEND_MODE) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -931,7 +920,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_COLOR.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_COLOR) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_COLOR) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -946,7 +935,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_COMPOSITION_TYPE.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_COMPOSITION_TYPE) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_COMPOSITION_TYPE) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -963,7 +952,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_DATASPACE.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_DATASPACE) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_DATASPACE) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -977,7 +966,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_DISPLAY_FRAME.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_DISPLAY_FRAME) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_DISPLAY_FRAME) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -991,7 +980,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_PLANE_ALPHA.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_PLANE_ALPHA) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_PLANE_ALPHA) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -1006,7 +995,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_SIDEBAND_STREAM.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_SIDEBAND_STREAM) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_SIDEBAND_STREAM) {
     if (!mComposer->hasCapability(IComposer::Capability::SIDEBAND_STREAM)) {
         GTEST_SUCCEED() << "no sideband stream support";
         return;
@@ -1028,7 +1017,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_SOURCE_CROP.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_SOURCE_CROP) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_SOURCE_CROP) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -1042,7 +1031,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_TRANSFORM.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_TRANSFORM) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_TRANSFORM) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -1063,7 +1052,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_VISIBLE_REGION.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_VISIBLE_REGION) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_VISIBLE_REGION) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -1082,7 +1071,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_Z_ORDER.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_Z_ORDER) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_Z_ORDER) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -1094,6 +1083,16 @@
     execute();
 }
 
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GraphicsComposerHidlCommandTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IComposer::descriptor)),
+        android::hardware::PrintInstanceNameToString);
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GraphicsComposerHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IComposer::descriptor)),
+        android::hardware::PrintInstanceNameToString);
+
 }  // namespace
 }  // namespace vts
 }  // namespace V2_1
@@ -1101,13 +1100,3 @@
 }  // namespace graphics
 }  // namespace hardware
 }  // namespace android
-
-int main(int argc, char** argv) {
-    using android::hardware::graphics::composer::V2_1::vts::GraphicsComposerHidlEnvironment;
-    ::testing::AddGlobalTestEnvironment(GraphicsComposerHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    GraphicsComposerHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    ALOGI("Test result = %d", status);
-    return status;
-}
diff --git a/graphics/composer/2.2/default/Android.mk b/graphics/composer/2.2/default/Android.mk
index 4916557..156ecb6 100644
--- a/graphics/composer/2.2/default/Android.mk
+++ b/graphics/composer/2.2/default/Android.mk
@@ -11,8 +11,8 @@
 LOCAL_SHARED_LIBRARIES := \
         android.hardware.graphics.composer@2.1 \
         android.hardware.graphics.composer@2.2 \
-        android.hardware.graphics.mapper@2.0 \
-        android.hardware.graphics.mapper@3.0 \
+        android.hardware.graphics.composer@2.1-resources \
+        android.hardware.graphics.composer@2.2-resources \
         libbase \
         libbinder \
         libcutils \
diff --git a/graphics/composer/2.2/utils/OWNERS b/graphics/composer/2.2/utils/OWNERS
index a17a50c..3f1e82c 100644
--- a/graphics/composer/2.2/utils/OWNERS
+++ b/graphics/composer/2.2/utils/OWNERS
@@ -3,7 +3,3 @@
 lpy@google.com
 stoza@google.com
 vhau@google.com
-
-# VTS team
-yim@google.com
-zhuoyao@google.com
diff --git a/graphics/composer/2.2/utils/command-buffer/Android.bp b/graphics/composer/2.2/utils/command-buffer/Android.bp
index efaabd4..c4ceaab 100644
--- a/graphics/composer/2.2/utils/command-buffer/Android.bp
+++ b/graphics/composer/2.2/utils/command-buffer/Android.bp
@@ -3,11 +3,16 @@
     defaults: ["hidl_defaults"],
     vendor_available: true,
     shared_libs: [
-        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.composer@2.2",
+    ],
+    export_shared_lib_headers: [
         "android.hardware.graphics.composer@2.2",
     ],
     header_libs: [
         "android.hardware.graphics.composer@2.1-command-buffer",
     ],
+    export_header_lib_headers: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+    ],
     export_include_dirs: ["include"],
 }
diff --git a/graphics/composer/2.2/utils/hal/Android.bp b/graphics/composer/2.2/utils/hal/Android.bp
index 10dcae4..f334a11 100644
--- a/graphics/composer/2.2/utils/hal/Android.bp
+++ b/graphics/composer/2.2/utils/hal/Android.bp
@@ -19,9 +19,11 @@
     vendor_available: true,
     shared_libs: [
         "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.2-resources",
     ],
     export_shared_lib_headers: [
         "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.2-resources",
     ],
     header_libs: [
         "android.hardware.graphics.composer@2.2-command-buffer",
diff --git a/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerClient.h b/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerClient.h
index c760d0a..512d39d 100644
--- a/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerClient.h
+++ b/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerClient.h
@@ -24,7 +24,7 @@
 #include <composer-hal/2.1/ComposerClient.h>
 #include <composer-hal/2.2/ComposerCommandEngine.h>
 #include <composer-hal/2.2/ComposerHal.h>
-#include <composer-hal/2.2/ComposerResources.h>
+#include <composer-resources/2.2/ComposerResources.h>
 
 namespace android {
 namespace hardware {
@@ -89,7 +89,7 @@
 
         auto resources = static_cast<ComposerResources*>(mResources.get());
         const native_handle_t* readbackBuffer;
-        ComposerResources::ReplacedBufferHandle replacedReadbackBuffer;
+        ComposerResources::ReplacedHandle replacedReadbackBuffer(true);
         error = resources->getDisplayReadbackBuffer(display, buffer.getNativeHandle(),
                                                     &readbackBuffer, &replacedReadbackBuffer);
         if (error != Error::NONE) {
diff --git a/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerCommandEngine.h b/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerCommandEngine.h
index 97e3a9e..d9f6226 100644
--- a/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerCommandEngine.h
+++ b/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerCommandEngine.h
@@ -23,7 +23,7 @@
 #include <composer-command-buffer/2.2/ComposerCommandBuffer.h>
 #include <composer-hal/2.1/ComposerCommandEngine.h>
 #include <composer-hal/2.2/ComposerHal.h>
-#include <composer-hal/2.2/ComposerResources.h>
+#include <composer-resources/2.2/ComposerResources.h>
 
 namespace android {
 namespace hardware {
diff --git a/graphics/composer/2.2/utils/resources/Android.bp b/graphics/composer/2.2/utils/resources/Android.bp
new file mode 100644
index 0000000..752eb81
--- /dev/null
+++ b/graphics/composer/2.2/utils/resources/Android.bp
@@ -0,0 +1,29 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_library_shared {
+    name: "android.hardware.graphics.composer@2.2-resources",
+    defaults: ["hidl_defaults"],
+    vendor_available: true,
+    shared_libs: [
+        "android.hardware.graphics.composer@2.1-resources",
+        "android.hardware.graphics.composer@2.2",
+    ],
+    export_shared_lib_headers: [
+        "android.hardware.graphics.composer@2.1-resources",
+        "android.hardware.graphics.composer@2.2",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/graphics/composer/2.2/utils/resources/ComposerResources.cpp b/graphics/composer/2.2/utils/resources/ComposerResources.cpp
new file mode 100644
index 0000000..a0610a3
--- /dev/null
+++ b/graphics/composer/2.2/utils/resources/ComposerResources.cpp
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "ComposerResources 2.2"
+
+#include "composer-resources/2.2/ComposerResources.h"
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_2 {
+namespace hal {
+
+using V2_1::Display;
+using V2_1::Error;
+using V2_1::Layer;
+using V2_1::hal::ComposerHandleCache;
+using V2_1::hal::ComposerHandleImporter;
+
+Error ComposerDisplayResource::getReadbackBuffer(const native_handle_t* inHandle,
+                                                 const native_handle_t** outHandle,
+                                                 const native_handle** outReplacedHandle) {
+    const uint32_t slot = 0;
+    const bool fromCache = false;
+    return mReadbackBufferCache.getHandle(slot, fromCache, inHandle, outHandle, outReplacedHandle);
+}
+
+std::unique_ptr<ComposerResources> ComposerResources::create() {
+    auto resources = std::make_unique<ComposerResources>();
+    return resources->init() ? std::move(resources) : nullptr;
+}
+
+Error ComposerResources::getDisplayReadbackBuffer(Display display, const native_handle_t* rawHandle,
+                                                  const native_handle_t** outHandle,
+                                                  ReplacedHandle* outReplacedHandle) {
+    // import buffer
+    const native_handle_t* importedHandle;
+    Error error = mImporter.importBuffer(rawHandle, &importedHandle);
+    if (error != Error::NONE) {
+        return error;
+    }
+
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+
+    auto iter = mDisplayResources.find(display);
+    if (iter == mDisplayResources.end()) {
+        mImporter.freeBuffer(importedHandle);
+        return Error::BAD_DISPLAY;
+    }
+    ComposerDisplayResource& displayResource =
+            *static_cast<ComposerDisplayResource*>(iter->second.get());
+
+    // update cache
+    const native_handle_t* replacedHandle;
+    error = displayResource.getReadbackBuffer(importedHandle, outHandle, &replacedHandle);
+    if (error != Error::NONE) {
+        mImporter.freeBuffer(importedHandle);
+        return error;
+    }
+
+    outReplacedHandle->reset(&mImporter, replacedHandle);
+    return Error::NONE;
+}
+
+}  // namespace hal
+}  // namespace V2_2
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerResources.h b/graphics/composer/2.2/utils/resources/include/composer-resources/2.2/ComposerResources.h
similarity index 90%
rename from graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerResources.h
rename to graphics/composer/2.2/utils/resources/include/composer-resources/2.2/ComposerResources.h
index 85b6651..33012e9 100644
--- a/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerResources.h
+++ b/graphics/composer/2.2/utils/resources/include/composer-resources/2.2/ComposerResources.h
@@ -20,7 +20,7 @@
 #warning "ComposerResources.h included without LOG_TAG"
 #endif
 
-#include <composer-hal/2.1/ComposerResources.h>
+#include <composer-resources/2.1/ComposerResources.h>
 
 namespace android {
 namespace hardware {
@@ -33,7 +33,7 @@
 using V2_1::hal::ComposerHandleImporter;
 
 class ComposerDisplayResource : public V2_1::hal::ComposerDisplayResource {
-   public:
+  public:
     ComposerDisplayResource(DisplayType type, ComposerHandleImporter& importer,
                             uint32_t outputBufferCacheSize)
         : V2_1::hal::ComposerDisplayResource(type, importer, outputBufferCacheSize),
@@ -47,12 +47,12 @@
                                               outReplacedHandle);
     }
 
-   protected:
+  protected:
     ComposerHandleCache mReadbackBufferCache;
 };
 
 class ComposerResources : public V2_1::hal::ComposerResources {
-   public:
+  public:
     static std::unique_ptr<ComposerResources> create() {
         auto resources = std::make_unique<ComposerResources>();
         return resources->init() ? std::move(resources) : nullptr;
@@ -60,7 +60,7 @@
 
     Error getDisplayReadbackBuffer(Display display, const native_handle_t* rawHandle,
                                    const native_handle_t** outHandle,
-                                   ReplacedBufferHandle* outReplacedHandle) {
+                                   ReplacedHandle* outReplacedHandle) {
         // import buffer
         const native_handle_t* importedHandle;
         Error error = mImporter.importBuffer(rawHandle, &importedHandle);
@@ -76,7 +76,7 @@
             return Error::BAD_DISPLAY;
         }
         ComposerDisplayResource& displayResource =
-            *static_cast<ComposerDisplayResource*>(iter->second.get());
+                *static_cast<ComposerDisplayResource*>(iter->second.get());
 
         // update cache
         const native_handle_t* replacedHandle;
@@ -90,9 +90,9 @@
         return Error::NONE;
     }
 
-   protected:
+  protected:
     std::unique_ptr<V2_1::hal::ComposerDisplayResource> createDisplayResource(
-        ComposerDisplayResource::DisplayType type, uint32_t outputBufferCacheSize) override {
+            ComposerDisplayResource::DisplayType type, uint32_t outputBufferCacheSize) override {
         return std::make_unique<ComposerDisplayResource>(type, mImporter, outputBufferCacheSize);
     }
 };
diff --git a/graphics/composer/2.2/utils/vts/Android.bp b/graphics/composer/2.2/utils/vts/Android.bp
index dd979cb..5432882 100644
--- a/graphics/composer/2.2/utils/vts/Android.bp
+++ b/graphics/composer/2.2/utils/vts/Android.bp
@@ -19,26 +19,36 @@
     defaults: ["hidl_defaults"],
     srcs: [
         "ComposerVts.cpp",
+        "ReadbackVts.cpp",
+        "RenderEngineVts.cpp",
+    ],
+    shared_libs: [
+        "libui",
     ],
     static_libs: [
         "VtsHalHidlTargetTestBase",
-        "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.1-vts",
         "android.hardware.graphics.composer@2.2",
-        "android.hardware.graphics.mapper@2.1",
         "android.hardware.graphics.mapper@2.1-vts",
+        "libarect",
+        "libmath",
+        "libnativewindow",
+        "librenderengine",
         "android.hardware.graphics.mapper@3.0",
         "android.hardware.graphics.mapper@3.0-vts",
+        "android.hardware.graphics.mapper@4.0",
+        "android.hardware.graphics.mapper@4.0-vts",
     ],
     export_static_lib_headers: [
+        "VtsHalHidlTargetTestBase",
         "android.hardware.graphics.composer@2.1-vts",
+        "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.mapper@2.1-vts",
     ],
     header_libs: [
-        "android.hardware.graphics.composer@2.1-command-buffer",
         "android.hardware.graphics.composer@2.2-command-buffer",
     ],
     export_header_lib_headers: [
-        "android.hardware.graphics.composer@2.1-command-buffer",
         "android.hardware.graphics.composer@2.2-command-buffer",
     ],
     cflags: [
diff --git a/graphics/composer/2.2/utils/vts/ComposerVts.cpp b/graphics/composer/2.2/utils/vts/ComposerVts.cpp
index cd6772a..93b67f0 100644
--- a/graphics/composer/2.2/utils/vts/ComposerVts.cpp
+++ b/graphics/composer/2.2/utils/vts/ComposerVts.cpp
@@ -182,17 +182,23 @@
 
 Gralloc::Gralloc() {
     [this] {
-        ALOGD("Attempting to initialize gralloc3");
-        ASSERT_NO_FATAL_FAILURE(mGralloc3 = std::make_shared<Gralloc3>("default", "default",
+        ALOGD("Attempting to initialize gralloc4");
+        ASSERT_NO_FATAL_FAILURE(mGralloc4 = std::make_shared<Gralloc4>("default", "default",
                                                                        /*errOnFailure=*/false));
-        if (mGralloc3->getMapper() == nullptr || mGralloc3->getAllocator() == nullptr) {
-            mGralloc3 = nullptr;
-            ALOGD("Failed to create gralloc3, initializing gralloc2_1");
-            mGralloc2_1 = std::make_shared<Gralloc2_1>(/*errOnFailure*/ false);
-            if (!mGralloc2_1->getMapper()) {
-                mGralloc2_1 = nullptr;
-                ALOGD("Failed to create gralloc2_1, initializing gralloc2");
-                ASSERT_NO_FATAL_FAILURE(mGralloc2 = std::make_shared<Gralloc2>());
+        if (mGralloc4->getMapper() == nullptr || mGralloc4->getAllocator() == nullptr) {
+            mGralloc4 = nullptr;
+            ALOGD("Failed to initialize gralloc4, initializing gralloc3");
+            ASSERT_NO_FATAL_FAILURE(mGralloc3 = std::make_shared<Gralloc3>("default", "default",
+                                                                           /*errOnFailure=*/false));
+            if (mGralloc3->getMapper() == nullptr || mGralloc3->getAllocator() == nullptr) {
+                mGralloc3 = nullptr;
+                ALOGD("Failed to initialize gralloc3, initializing gralloc2_1");
+                mGralloc2_1 = std::make_shared<Gralloc2_1>(/*errOnFailure*/ false);
+                if (!mGralloc2_1->getMapper()) {
+                    mGralloc2_1 = nullptr;
+                    ALOGD("Failed to initialize gralloc2_1, initializing gralloc2");
+                    ASSERT_NO_FATAL_FAILURE(mGralloc2 = std::make_shared<Gralloc2>());
+                }
             }
         }
     }();
@@ -201,7 +207,15 @@
 bool Gralloc::validateBufferSize(const native_handle_t* bufferHandle, uint32_t width,
                                  uint32_t height, uint32_t layerCount, PixelFormat format,
                                  uint64_t usage, uint32_t stride) {
-    if (mGralloc3) {
+    if (mGralloc4) {
+        IMapper4::BufferDescriptorInfo info{};
+        info.width = width;
+        info.height = height;
+        info.layerCount = layerCount;
+        info.format = static_cast<android::hardware::graphics::common::V1_2::PixelFormat>(format);
+        info.usage = usage;
+        return mGralloc4->validateBufferSize(bufferHandle, info, stride);
+    } else if (mGralloc3) {
         IMapper3::BufferDescriptorInfo info{};
         info.width = width;
         info.height = height;
diff --git a/graphics/composer/2.2/utils/vts/ReadbackVts.cpp b/graphics/composer/2.2/utils/vts/ReadbackVts.cpp
new file mode 100644
index 0000000..7bb9121
--- /dev/null
+++ b/graphics/composer/2.2/utils/vts/ReadbackVts.cpp
@@ -0,0 +1,355 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <composer-vts/2.2/ReadbackVts.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_2 {
+namespace vts {
+
+void TestLayer::write(const std::shared_ptr<CommandWriterBase>& writer) {
+    writer->selectLayer(mLayer);
+    writer->setLayerDisplayFrame(mDisplayFrame);
+    writer->setLayerSourceCrop(mSourceCrop);
+    writer->setLayerZOrder(mZOrder);
+    writer->setLayerSurfaceDamage(mSurfaceDamage);
+    writer->setLayerTransform(mTransform);
+    writer->setLayerPlaneAlpha(mAlpha);
+    writer->setLayerBlendMode(mBlendMode);
+}
+
+const std::vector<ColorMode> ReadbackHelper::colorModes = {ColorMode::SRGB, ColorMode::DISPLAY_P3};
+const std::vector<Dataspace> ReadbackHelper::dataspaces = {Dataspace::V0_SRGB,
+                                                           Dataspace::DISPLAY_P3};
+
+std::string ReadbackHelper::getColorModeString(ColorMode mode) {
+    switch (mode) {
+        case ColorMode::SRGB:
+            return std::string("SRGB");
+        case ColorMode::DISPLAY_P3:
+            return std::string("DISPLAY_P3");
+        default:
+            return std::string("Unsupported color mode for readback");
+    }
+}
+
+std::string ReadbackHelper::getDataspaceString(Dataspace dataspace) {
+    switch (dataspace) {
+        case Dataspace::V0_SRGB:
+            return std::string("V0_SRGB");
+        case Dataspace::DISPLAY_P3:
+            return std::string("DISPLAY_P3");
+        case Dataspace::UNKNOWN:
+            return std::string("UNKNOWN");
+        default:
+            return std::string("Unsupported dataspace for readback");
+    }
+}
+
+Dataspace ReadbackHelper::getDataspaceForColorMode(ColorMode mode) {
+    switch (mode) {
+        case ColorMode::DISPLAY_P3:
+            return Dataspace::DISPLAY_P3;
+        case ColorMode::SRGB:
+        default:
+            return Dataspace::UNKNOWN;
+    }
+}
+
+LayerSettings TestLayer::toRenderEngineLayerSettings() {
+    LayerSettings layerSettings;
+
+    layerSettings.alpha = half(mAlpha);
+    layerSettings.disableBlending = mBlendMode == IComposerClient::BlendMode::NONE;
+    layerSettings.geometry.boundaries = FloatRect(
+            static_cast<float>(mDisplayFrame.left), static_cast<float>(mDisplayFrame.top),
+            static_cast<float>(mDisplayFrame.right), static_cast<float>(mDisplayFrame.bottom));
+
+    const mat4 translation = mat4::translate(
+            vec4((mTransform & Transform::FLIP_H ? -mDisplayFrame.right : 0.0f),
+                 (mTransform & Transform::FLIP_V ? -mDisplayFrame.bottom : 0.0f), 0.0f, 1.0f));
+
+    const mat4 scale = mat4::scale(vec4(mTransform & Transform::FLIP_H ? -1.0f : 1.0f,
+                                        mTransform & Transform::FLIP_V ? -1.0f : 1.0f, 1.0f, 1.0f));
+
+    layerSettings.geometry.positionTransform = scale * translation;
+
+    return layerSettings;
+}
+
+int32_t ReadbackHelper::GetBytesPerPixel(PixelFormat pixelFormat) {
+    switch (pixelFormat) {
+        case PixelFormat::RGBA_8888:
+            return 4;
+        case PixelFormat::RGB_888:
+            return 3;
+        default:
+            return -1;
+    }
+}
+
+void ReadbackHelper::fillBuffer(int32_t width, int32_t height, uint32_t stride, void* bufferData,
+                                PixelFormat pixelFormat,
+                                std::vector<IComposerClient::Color> desiredPixelColors) {
+    ASSERT_TRUE(pixelFormat == PixelFormat::RGB_888 || pixelFormat == PixelFormat::RGBA_8888);
+    int32_t bytesPerPixel = GetBytesPerPixel(pixelFormat);
+    ASSERT_NE(-1, bytesPerPixel);
+    for (int row = 0; row < height; row++) {
+        for (int col = 0; col < width; col++) {
+            int pixel = row * width + col;
+            IComposerClient::Color srcColor = desiredPixelColors[pixel];
+
+            int offset = (row * stride + col) * bytesPerPixel;
+            uint8_t* pixelColor = (uint8_t*)bufferData + offset;
+            pixelColor[0] = srcColor.r;
+            pixelColor[1] = srcColor.g;
+            pixelColor[2] = srcColor.b;
+
+            if (bytesPerPixel == 4) {
+                pixelColor[3] = srcColor.a;
+            }
+        }
+    }
+}
+
+void ReadbackHelper::clearColors(std::vector<IComposerClient::Color>& expectedColors, int32_t width,
+                                 int32_t height, int32_t displayWidth) {
+    for (int row = 0; row < height; row++) {
+        for (int col = 0; col < width; col++) {
+            int pixel = row * displayWidth + col;
+            expectedColors[pixel] = BLACK;
+        }
+    }
+}
+
+void ReadbackHelper::fillColorsArea(std::vector<IComposerClient::Color>& expectedColors,
+                                    int32_t stride, IComposerClient::Rect area,
+                                    IComposerClient::Color color) {
+    for (int row = area.top; row < area.bottom; row++) {
+        for (int col = area.left; col < area.right; col++) {
+            int pixel = row * stride + col;
+            expectedColors[pixel] = color;
+        }
+    }
+}
+
+bool ReadbackHelper::readbackSupported(const PixelFormat& pixelFormat, const Dataspace& dataspace,
+                                       const Error error) {
+    if (error != Error::NONE) {
+        return false;
+    }
+    // TODO: add support for RGBA_1010102
+    if (pixelFormat != PixelFormat::RGB_888 && pixelFormat != PixelFormat::RGBA_8888) {
+        return false;
+    }
+    if (std::find(dataspaces.begin(), dataspaces.end(), dataspace) == dataspaces.end()) {
+        return false;
+    }
+    return true;
+}
+
+void ReadbackHelper::compareColorBuffers(std::vector<IComposerClient::Color>& expectedColors,
+                                         void* bufferData, const uint32_t stride,
+                                         const uint32_t width, const uint32_t height,
+                                         const PixelFormat pixelFormat) {
+    const int32_t bytesPerPixel = ReadbackHelper::GetBytesPerPixel(pixelFormat);
+    ASSERT_NE(-1, bytesPerPixel);
+    for (int row = 0; row < height; row++) {
+        for (int col = 0; col < width; col++) {
+            int pixel = row * width + col;
+            int offset = (row * stride + col) * bytesPerPixel;
+            uint8_t* pixelColor = (uint8_t*)bufferData + offset;
+
+            ASSERT_EQ(expectedColors[pixel].r, pixelColor[0]);
+            ASSERT_EQ(expectedColors[pixel].g, pixelColor[1]);
+            ASSERT_EQ(expectedColors[pixel].b, pixelColor[2]);
+        }
+    }
+}
+
+ReadbackBuffer::ReadbackBuffer(Display display, const std::shared_ptr<ComposerClient>& client,
+                               const std::shared_ptr<Gralloc>& gralloc, uint32_t width,
+                               uint32_t height, PixelFormat pixelFormat, Dataspace dataspace) {
+    mDisplay = display;
+
+    mComposerClient = client;
+    mGralloc = gralloc;
+
+    mPixelFormat = pixelFormat;
+    mDataspace = dataspace;
+
+    mWidth = width;
+    mHeight = height;
+    mLayerCount = 1;
+    mFormat = mPixelFormat;
+    mUsage = static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::GPU_TEXTURE);
+
+    mAccessRegion.top = 0;
+    mAccessRegion.left = 0;
+    mAccessRegion.width = width;
+    mAccessRegion.height = height;
+}
+
+ReadbackBuffer::~ReadbackBuffer() {
+    if (mBufferHandle != nullptr) {
+        mGralloc->freeBuffer(mBufferHandle);
+    }
+}
+
+void ReadbackBuffer::setReadbackBuffer() {
+    if (mBufferHandle != nullptr) {
+        mGralloc->freeBuffer(mBufferHandle);
+        mBufferHandle = nullptr;
+    }
+    mBufferHandle = mGralloc->allocate(mWidth, mHeight, mLayerCount, mFormat, mUsage,
+                                       /*import*/ true, &mStride);
+    ASSERT_NE(false, mGralloc->validateBufferSize(mBufferHandle, mWidth, mHeight, mLayerCount,
+                                                  mFormat, mUsage, mStride));
+    ASSERT_NO_FATAL_FAILURE(mComposerClient->setReadbackBuffer(mDisplay, mBufferHandle, -1));
+}
+
+void ReadbackBuffer::checkReadbackBuffer(std::vector<IComposerClient::Color> expectedColors) {
+    // lock buffer for reading
+    int32_t fenceHandle;
+    ASSERT_NO_FATAL_FAILURE(mComposerClient->getReadbackBufferFence(mDisplay, &fenceHandle));
+
+    void* bufData = mGralloc->lock(mBufferHandle, mUsage, mAccessRegion, fenceHandle);
+    ASSERT_TRUE(mPixelFormat == PixelFormat::RGB_888 || mPixelFormat == PixelFormat::RGBA_8888);
+    ReadbackHelper::compareColorBuffers(expectedColors, bufData, mStride, mWidth, mHeight,
+                                        mPixelFormat);
+    int32_t unlockFence = mGralloc->unlock(mBufferHandle);
+    if (unlockFence != -1) {
+        sync_wait(unlockFence, -1);
+        close(unlockFence);
+    }
+}
+
+void TestColorLayer::write(const std::shared_ptr<CommandWriterBase>& writer) {
+    TestLayer::write(writer);
+    writer->setLayerCompositionType(IComposerClient::Composition::SOLID_COLOR);
+    writer->setLayerColor(mColor);
+}
+
+LayerSettings TestColorLayer::toRenderEngineLayerSettings() {
+    LayerSettings layerSettings = TestLayer::toRenderEngineLayerSettings();
+
+    layerSettings.source.solidColor =
+            half3(static_cast<half>(mColor.r) / 255.0, static_cast<half>(mColor.g) / 255.0,
+                  static_cast<half>(mColor.b) / 255.0);
+    layerSettings.alpha = mAlpha * (static_cast<half>(mColor.a) / 255.0);
+    return layerSettings;
+}
+
+TestBufferLayer::TestBufferLayer(const std::shared_ptr<ComposerClient>& client,
+                                 const std::shared_ptr<Gralloc>& gralloc, Display display,
+                                 int32_t width, int32_t height, PixelFormat format,
+                                 IComposerClient::Composition composition)
+    : TestLayer{client, display} {
+    mGralloc = gralloc;
+    mComposition = composition;
+    mWidth = width;
+    mHeight = height;
+    mLayerCount = 1;
+    mFormat = format;
+    mUsage = static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
+                                   BufferUsage::COMPOSER_OVERLAY);
+
+    mAccessRegion.top = 0;
+    mAccessRegion.left = 0;
+    mAccessRegion.width = width;
+    mAccessRegion.height = height;
+
+    setSourceCrop({0, 0, (float)width, (float)height});
+}
+
+TestBufferLayer::~TestBufferLayer() {
+    if (mBufferHandle != nullptr) {
+        mGralloc->freeBuffer(mBufferHandle);
+    }
+}
+
+void TestBufferLayer::write(const std::shared_ptr<CommandWriterBase>& writer) {
+    TestLayer::write(writer);
+    writer->setLayerCompositionType(mComposition);
+    writer->setLayerVisibleRegion(std::vector<IComposerClient::Rect>(1, mDisplayFrame));
+    if (mBufferHandle != nullptr) writer->setLayerBuffer(0, mBufferHandle, mFillFence);
+}
+
+LayerSettings TestBufferLayer::toRenderEngineLayerSettings() {
+    LayerSettings layerSettings = TestLayer::toRenderEngineLayerSettings();
+    layerSettings.source.buffer.buffer =
+            new GraphicBuffer(mBufferHandle, GraphicBuffer::CLONE_HANDLE, mWidth, mHeight,
+                              static_cast<int32_t>(mFormat), 1, mUsage, mStride);
+
+    layerSettings.source.buffer.usePremultipliedAlpha =
+            mBlendMode == IComposerClient::BlendMode::PREMULTIPLIED;
+
+    const float scaleX = (mSourceCrop.right - mSourceCrop.left) / (mWidth);
+    const float scaleY = (mSourceCrop.bottom - mSourceCrop.top) / (mHeight);
+    const float translateX = mSourceCrop.left / (mWidth);
+    const float translateY = mSourceCrop.top / (mHeight);
+
+    layerSettings.source.buffer.textureTransform =
+            mat4::translate(vec4(translateX, translateY, 0, 1)) *
+            mat4::scale(vec4(scaleX, scaleY, 1.0, 1.0));
+
+    return layerSettings;
+}
+
+void TestBufferLayer::fillBuffer(std::vector<IComposerClient::Color> expectedColors) {
+    void* bufData = mGralloc->lock(mBufferHandle, mUsage, mAccessRegion, -1);
+    ASSERT_NO_FATAL_FAILURE(
+            ReadbackHelper::fillBuffer(mWidth, mHeight, mStride, bufData, mFormat, expectedColors));
+    mFillFence = mGralloc->unlock(mBufferHandle);
+    if (mFillFence != -1) {
+        sync_wait(mFillFence, -1);
+        close(mFillFence);
+    }
+}
+
+void TestBufferLayer::setBuffer(std::vector<IComposerClient::Color> colors) {
+    if (mBufferHandle != nullptr) {
+        mGralloc->freeBuffer(mBufferHandle);
+        mBufferHandle = nullptr;
+    }
+    mBufferHandle = mGralloc->allocate(mWidth, mHeight, mLayerCount, mFormat, mUsage,
+                                       /*import*/ true, &mStride);
+    ASSERT_NE(nullptr, mBufferHandle);
+    ASSERT_NO_FATAL_FAILURE(fillBuffer(colors));
+    ASSERT_NE(false, mGralloc->validateBufferSize(mBufferHandle, mWidth, mHeight, mLayerCount,
+                                                  mFormat, mUsage, mStride));
+}
+
+void TestBufferLayer::setDataspace(Dataspace dataspace,
+                                   const std::shared_ptr<CommandWriterBase>& writer) {
+    writer->selectLayer(mLayer);
+    writer->setLayerDataspace(dataspace);
+}
+
+void TestBufferLayer::setToClientComposition(const std::shared_ptr<CommandWriterBase>& writer) {
+    writer->selectLayer(mLayer);
+    writer->setLayerCompositionType(IComposerClient::Composition::CLIENT);
+}
+
+}  // namespace vts
+}  // namespace V2_2
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.2/utils/vts/RenderEngineVts.cpp b/graphics/composer/2.2/utils/vts/RenderEngineVts.cpp
new file mode 100644
index 0000000..e2f2670
--- /dev/null
+++ b/graphics/composer/2.2/utils/vts/RenderEngineVts.cpp
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <composer-vts/2.2/RenderEngineVts.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_2 {
+namespace vts {
+
+using mapper::V2_1::IMapper;
+using renderengine::DisplaySettings;
+using renderengine::LayerSettings;
+using renderengine::RenderEngineCreationArgs;
+
+TestRenderEngine::TestRenderEngine(const RenderEngineCreationArgs& args) {
+    mFormat = static_cast<common::V1_1::PixelFormat>(args.pixelFormat);
+    mRenderEngine = renderengine::RenderEngine::create(args);
+}
+
+void TestRenderEngine::setRenderLayers(std::vector<std::shared_ptr<TestLayer>> layers) {
+    sort(layers.begin(), layers.end(),
+         [](const std::shared_ptr<TestLayer>& lhs, const std::shared_ptr<TestLayer>& rhs) -> bool {
+             return lhs->mZOrder < rhs->mZOrder;
+         });
+
+    if (!mCompositionLayers.empty()) {
+        mCompositionLayers.clear();
+    }
+    for (auto& layer : layers) {
+        LayerSettings settings = layer->toRenderEngineLayerSettings();
+        mCompositionLayers.push_back(settings);
+    }
+}
+
+void TestRenderEngine::initGraphicBuffer(uint32_t width, uint32_t height, uint32_t layerCount,
+                                         uint64_t usage) {
+    mGraphicBuffer =
+            new GraphicBuffer(width, height, static_cast<int32_t>(mFormat), layerCount, usage);
+}
+
+void TestRenderEngine::drawLayers() {
+    base::unique_fd bufferFence;
+    base::unique_fd readyFence;
+    mRenderEngine->drawLayers(mDisplaySettings, mCompositionLayers,
+                              mGraphicBuffer->getNativeBuffer(), true, std::move(bufferFence),
+                              &readyFence);
+    int fd = readyFence.release();
+    if (fd != -1) {
+        ASSERT_EQ(0, sync_wait(fd, -1));
+        ASSERT_EQ(0, close(fd));
+    }
+}
+
+void TestRenderEngine::checkColorBuffer(std::vector<V2_2::IComposerClient::Color>& expectedColors) {
+    void* bufferData;
+    ASSERT_EQ(0, mGraphicBuffer->lock(mGraphicBuffer->getUsage(), &bufferData));
+    ReadbackHelper::compareColorBuffers(expectedColors, bufferData, mGraphicBuffer->getStride(),
+                                        mGraphicBuffer->getWidth(), mGraphicBuffer->getHeight(),
+                                        mFormat);
+    ASSERT_EQ(0, mGraphicBuffer->unlock());
+}
+
+}  // namespace vts
+}  // namespace V2_2
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ComposerVts.h b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ComposerVts.h
index 8fa9b7b..5d22305 100644
--- a/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ComposerVts.h
+++ b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ComposerVts.h
@@ -44,9 +44,11 @@
 using common::V1_1::RenderIntent;
 using IMapper2_1 = android::hardware::graphics::mapper::V2_1::IMapper;
 using IMapper3 = android::hardware::graphics::mapper::V3_0::IMapper;
+using IMapper4 = android::hardware::graphics::mapper::V4_0::IMapper;
 using Gralloc2 = android::hardware::graphics::mapper::V2_0::vts::Gralloc;
 using Gralloc2_1 = android::hardware::graphics::mapper::V2_1::vts::Gralloc;
 using Gralloc3 = android::hardware::graphics::mapper::V3_0::vts::Gralloc;
+using Gralloc4 = android::hardware::graphics::mapper::V4_0::vts::Gralloc;
 
 class ComposerClient;
 
diff --git a/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ReadbackVts.h b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ReadbackVts.h
new file mode 100644
index 0000000..7519a64
--- /dev/null
+++ b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ReadbackVts.h
@@ -0,0 +1,208 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/unique_fd.h>
+#include <android/hardware/graphics/composer/2.2/IComposerClient.h>
+#include <composer-command-buffer/2.2/ComposerCommandBuffer.h>
+#include <composer-vts/2.1/GraphicsComposerCallback.h>
+#include <composer-vts/2.1/TestCommandReader.h>
+#include <composer-vts/2.2/ComposerVts.h>
+#include <mapper-vts/2.1/MapperVts.h>
+#include <renderengine/RenderEngine.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_2 {
+namespace vts {
+
+using android::hardware::hidl_handle;
+using common::V1_1::BufferUsage;
+using common::V1_1::Dataspace;
+using common::V1_1::PixelFormat;
+using IMapper2_1 = mapper::V2_1::IMapper;
+using Gralloc2_1 = mapper::V2_1::vts::Gralloc;
+using renderengine::LayerSettings;
+using V2_1::Display;
+using V2_1::Layer;
+using V2_1::vts::AccessRegion;
+using V2_1::vts::TestCommandReader;
+
+static const IComposerClient::Color BLACK = {0, 0, 0, 0xff};
+static const IComposerClient::Color RED = {0xff, 0, 0, 0xff};
+static const IComposerClient::Color TRANSLUCENT_RED = {0xff, 0, 0, 0x33};
+static const IComposerClient::Color GREEN = {0, 0xff, 0, 0xff};
+static const IComposerClient::Color BLUE = {0, 0, 0xff, 0xff};
+
+class TestLayer {
+  public:
+    TestLayer(const std::shared_ptr<ComposerClient>& client, Display display)
+        : mLayer(client->createLayer(display, kBufferSlotCount)), mComposerClient(client) {}
+
+    // ComposerClient will take care of destroying layers, no need to explicitly
+    // call destroyLayers here
+    virtual ~TestLayer(){};
+
+    virtual void write(const std::shared_ptr<CommandWriterBase>& writer);
+    virtual LayerSettings toRenderEngineLayerSettings();
+
+    void setDisplayFrame(IComposerClient::Rect frame) { mDisplayFrame = frame; }
+    void setSourceCrop(IComposerClient::FRect crop) { mSourceCrop = crop; }
+    void setZOrder(uint32_t z) { mZOrder = z; }
+
+    void setSurfaceDamage(std::vector<IComposerClient::Rect> surfaceDamage) {
+        mSurfaceDamage = surfaceDamage;
+    }
+
+    void setTransform(Transform transform) { mTransform = transform; }
+    void setAlpha(float alpha) { mAlpha = alpha; }
+    void setBlendMode(IComposerClient::BlendMode blendMode) { mBlendMode = blendMode; }
+
+    static constexpr uint32_t kBufferSlotCount = 64;
+
+    IComposerClient::Rect mDisplayFrame = {0, 0, 0, 0};
+    uint32_t mZOrder = 0;
+    std::vector<IComposerClient::Rect> mSurfaceDamage;
+    Transform mTransform = static_cast<Transform>(0);
+    IComposerClient::FRect mSourceCrop = {0, 0, 0, 0};
+    float mAlpha = 1.0;
+    IComposerClient::BlendMode mBlendMode = IComposerClient::BlendMode::NONE;
+
+  protected:
+    Layer mLayer;
+
+  private:
+    std::shared_ptr<ComposerClient> const mComposerClient;
+};
+
+class TestColorLayer : public TestLayer {
+  public:
+    TestColorLayer(const std::shared_ptr<ComposerClient>& client, Display display)
+        : TestLayer{client, display} {}
+
+    void write(const std::shared_ptr<CommandWriterBase>& writer) override;
+
+    LayerSettings toRenderEngineLayerSettings() override;
+
+    void setColor(IComposerClient::Color color) { mColor = color; }
+
+  private:
+    IComposerClient::Color mColor = {0xff, 0xff, 0xff, 0xff};
+};
+
+class TestBufferLayer : public TestLayer {
+  public:
+    TestBufferLayer(
+            const std::shared_ptr<ComposerClient>& client, const std::shared_ptr<Gralloc>& gralloc,
+            Display display, int32_t width, int32_t height, PixelFormat format,
+            IComposerClient::Composition composition = IComposerClient::Composition::DEVICE);
+
+    ~TestBufferLayer();
+
+    void write(const std::shared_ptr<CommandWriterBase>& writer) override;
+
+    LayerSettings toRenderEngineLayerSettings() override;
+
+    void fillBuffer(std::vector<IComposerClient::Color> expectedColors);
+
+    void setBuffer(std::vector<IComposerClient::Color> colors);
+
+    void setDataspace(Dataspace dataspace, const std::shared_ptr<CommandWriterBase>& writer);
+
+    void setToClientComposition(const std::shared_ptr<CommandWriterBase>& writer);
+
+    uint32_t mWidth;
+    uint32_t mHeight;
+    uint32_t mLayerCount;
+    PixelFormat mFormat;
+    uint64_t mUsage;
+    AccessRegion mAccessRegion;
+    uint32_t mStride;
+
+  protected:
+    IComposerClient::Composition mComposition;
+    std::shared_ptr<Gralloc> mGralloc;
+    int32_t mFillFence;
+    const native_handle_t* mBufferHandle = nullptr;
+};
+
+class ReadbackHelper : public ::testing::VtsHalHidlTargetTestBase {
+  public:
+    static std::string getColorModeString(ColorMode mode);
+
+    static std::string getDataspaceString(Dataspace dataspace);
+
+    static Dataspace getDataspaceForColorMode(ColorMode mode);
+
+    static int32_t GetBytesPerPixel(PixelFormat pixelFormat);
+
+    static void fillBuffer(int32_t width, int32_t height, uint32_t stride, void* bufferData,
+                           PixelFormat pixelFormat,
+                           std::vector<IComposerClient::Color> desiredPixelColors);
+
+    static void clearColors(std::vector<IComposerClient::Color>& expectedColors, int32_t width,
+                            int32_t height, int32_t displayWidth);
+
+    static void fillColorsArea(std::vector<IComposerClient::Color>& expectedColors, int32_t stride,
+                               IComposerClient::Rect area, IComposerClient::Color color);
+
+    static bool readbackSupported(const PixelFormat& pixelFormat, const Dataspace& dataspace,
+                                  const Error error);
+
+    static const std::vector<ColorMode> colorModes;
+    static const std::vector<Dataspace> dataspaces;
+
+    static void compareColorBuffers(std::vector<IComposerClient::Color>& expectedColors,
+                                    void* bufferData, const uint32_t stride, const uint32_t width,
+                                    const uint32_t height, const PixelFormat pixelFormat);
+};
+
+class ReadbackBuffer {
+  public:
+    ReadbackBuffer(Display display, const std::shared_ptr<ComposerClient>& client,
+                   const std::shared_ptr<Gralloc>& gralloc, uint32_t width, uint32_t height,
+                   PixelFormat pixelFormat, Dataspace dataspace);
+    ~ReadbackBuffer();
+
+    void setReadbackBuffer();
+
+    void checkReadbackBuffer(std::vector<IComposerClient::Color> expectedColors);
+
+  protected:
+    uint32_t mWidth;
+    uint32_t mHeight;
+    uint32_t mLayerCount;
+    PixelFormat mFormat;
+    uint64_t mUsage;
+    AccessRegion mAccessRegion;
+    uint32_t mStride;
+    const native_handle_t* mBufferHandle = nullptr;
+    PixelFormat mPixelFormat;
+    Dataspace mDataspace;
+    Display mDisplay;
+    std::shared_ptr<Gralloc> mGralloc;
+    std::shared_ptr<ComposerClient> mComposerClient;
+};
+
+}  // namespace vts
+}  // namespace V2_2
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/RenderEngineVts.h b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/RenderEngineVts.h
new file mode 100644
index 0000000..b936cab
--- /dev/null
+++ b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/RenderEngineVts.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <composer-vts/2.2/ReadbackVts.h>
+#include <math/half.h>
+#include <math/vec3.h>
+#include <renderengine/RenderEngine.h>
+#include <ui/GraphicBuffer.h>
+#include <ui/GraphicBufferAllocator.h>
+#include <ui/PixelFormat.h>
+#include <ui/Rect.h>
+#include <ui/Region.h>
+
+#include <VtsHalHidlTargetTestBase.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_2 {
+namespace vts {
+
+using mapper::V2_1::IMapper;
+using renderengine::DisplaySettings;
+using renderengine::RenderEngineCreationArgs;
+using vts::Gralloc;
+
+class TestRenderEngine {
+  public:
+    static constexpr uint32_t sMaxFrameBufferAcquireBuffers = 2;
+
+    TestRenderEngine(const RenderEngineCreationArgs& args);
+    ~TestRenderEngine() = default;
+
+    void setRenderLayers(std::vector<std::shared_ptr<TestLayer>> layers);
+    void initGraphicBuffer(uint32_t width, uint32_t height, uint32_t layerCount, uint64_t usage);
+    void setDisplaySettings(DisplaySettings& displaySettings) {
+        mDisplaySettings = displaySettings;
+    };
+    void drawLayers();
+    void checkColorBuffer(std::vector<V2_2::IComposerClient::Color>& expectedColors);
+
+  private:
+    common::V1_1::PixelFormat mFormat;
+    std::vector<renderengine::LayerSettings> mCompositionLayers;
+    std::unique_ptr<renderengine::RenderEngine> mRenderEngine;
+    std::vector<renderengine::LayerSettings> mRenderLayers;
+    sp<GraphicBuffer> mGraphicBuffer;
+    DisplaySettings mDisplaySettings;
+};
+
+}  // namespace vts
+}  // namespace V2_2
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.2/vts/functional/Android.bp b/graphics/composer/2.2/vts/functional/Android.bp
index a8e70ae..21ba9f3 100644
--- a/graphics/composer/2.2/vts/functional/Android.bp
+++ b/graphics/composer/2.2/vts/functional/Android.bp
@@ -19,18 +19,25 @@
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: [
         "VtsHalGraphicsComposerV2_2ReadbackTest.cpp",
-        "VtsHalGraphicsComposerV2_2TargetTest.cpp",
+        "VtsHalGraphicsComposerV2_2TargetTest.cpp"
     ],
 
     // TODO(b/64437680): Assume these libs are always available on the device.
     shared_libs: [
+        "libEGL",
+        "libGLESv1_CM",
+        "libGLESv2",
         "libfmq",
+        "libgui",
         "libhidlbase",
+        "libprocessgroup",
         "libsync",
+        "libui",
     ],
     static_libs: [
         "android.hardware.graphics.allocator@2.0",
         "android.hardware.graphics.allocator@3.0",
+        "android.hardware.graphics.allocator@4.0",
         "android.hardware.graphics.common@1.1",
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.1-vts",
@@ -42,6 +49,9 @@
         "android.hardware.graphics.mapper@2.1-vts",
         "android.hardware.graphics.mapper@3.0",
         "android.hardware.graphics.mapper@3.0-vts",
+        "android.hardware.graphics.mapper@4.0",
+        "android.hardware.graphics.mapper@4.0-vts",
+        "librenderengine"
     ],
     header_libs: [
         "android.hardware.graphics.composer@2.1-command-buffer",
diff --git a/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2ReadbackTest.cpp b/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2ReadbackTest.cpp
index 02c4c9c..6a6f7de 100644
--- a/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2ReadbackTest.cpp
+++ b/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2ReadbackTest.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018 The Android Open Source Project
+ * Copyright 2019 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,13 +18,17 @@
 
 #include <VtsHalHidlTargetTestBase.h>
 #include <VtsHalHidlTargetTestEnvBase.h>
-#include <android-base/unique_fd.h>
-#include <android/hardware/graphics/composer/2.2/IComposerClient.h>
 #include <composer-command-buffer/2.2/ComposerCommandBuffer.h>
 #include <composer-vts/2.1/GraphicsComposerCallback.h>
 #include <composer-vts/2.1/TestCommandReader.h>
 #include <composer-vts/2.2/ComposerVts.h>
-#include <mapper-vts/2.1/MapperVts.h>
+#include <composer-vts/2.2/ReadbackVts.h>
+#include <composer-vts/2.2/RenderEngineVts.h>
+#include <ui/GraphicBuffer.h>
+#include <ui/GraphicBufferAllocator.h>
+#include <ui/PixelFormat.h>
+#include <ui/Rect.h>
+#include <ui/Region.h>
 
 namespace android {
 namespace hardware {
@@ -34,21 +38,17 @@
 namespace vts {
 namespace {
 
+using android::GraphicBuffer;
+using android::Rect;
 using android::hardware::hidl_handle;
 using common::V1_1::BufferUsage;
 using common::V1_1::Dataspace;
 using common::V1_1::PixelFormat;
 using mapper::V2_1::IMapper;
+using V2_1::Config;
 using V2_1::Display;
-using V2_1::Layer;
-using V2_1::vts::AccessRegion;
 using V2_1::vts::TestCommandReader;
-
-static const IComposerClient::Color BLACK = {0, 0, 0, 0xff};
-static const IComposerClient::Color RED = {0xff, 0, 0, 0xff};
-static const IComposerClient::Color TRANSLUCENT_RED = {0xff, 0, 0, 0x33};
-static const IComposerClient::Color GREEN = {0, 0xff, 0, 0xff};
-static const IComposerClient::Color BLUE = {0, 0, 0xff, 0xff};
+using vts::Gralloc;
 
 // Test environment for graphics.composer
 class GraphicsComposerHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
@@ -65,93 +65,8 @@
     GTEST_DISALLOW_COPY_AND_ASSIGN_(GraphicsComposerHidlEnvironment);
 };
 
-class TestLayer {
-   public:
-    TestLayer(const std::shared_ptr<ComposerClient>& client, Display display)
-        : mLayer(client->createLayer(display, kBufferSlotCount)), mComposerClient(client) {}
-
-    // ComposerClient will take care of destroying layers, no need to explicitly
-    // call destroyLayers here
-    virtual ~TestLayer(){};
-
-    virtual void write(const std::shared_ptr<CommandWriterBase>& writer) {
-        writer->selectLayer(mLayer);
-        writer->setLayerDisplayFrame(mDisplayFrame);
-        writer->setLayerSourceCrop(mSourceCrop);
-        writer->setLayerZOrder(mZOrder);
-        writer->setLayerSurfaceDamage(mSurfaceDamage);
-        writer->setLayerTransform(mTransform);
-        writer->setLayerPlaneAlpha(mAlpha);
-        writer->setLayerBlendMode(mBlendMode);
-    }
-
-    void setDisplayFrame(IComposerClient::Rect frame) { mDisplayFrame = frame; }
-    void setSourceCrop(IComposerClient::FRect crop) { mSourceCrop = crop; }
-    void setZOrder(uint32_t z) { mZOrder = z; }
-
-    void setSurfaceDamage(std::vector<IComposerClient::Rect> surfaceDamage) {
-        mSurfaceDamage = surfaceDamage;
-    }
-
-    void setTransform(Transform transform) { mTransform = transform; }
-    void setAlpha(float alpha) { mAlpha = alpha; }
-    void setBlendMode(IComposerClient::BlendMode blendMode) { mBlendMode = blendMode; }
-
-    static constexpr uint32_t kBufferSlotCount = 64;
-
-    IComposerClient::Rect mDisplayFrame = {0, 0, 0, 0};
-    uint32_t mZOrder = 0;
-    std::vector<IComposerClient::Rect> mSurfaceDamage;
-    Transform mTransform = static_cast<Transform>(0);
-    IComposerClient::FRect mSourceCrop = {0, 0, 0, 0};
-    float mAlpha = 1.0;
-    IComposerClient::BlendMode mBlendMode = IComposerClient::BlendMode::NONE;
-
-   protected:
-    Layer mLayer;
-
-   private:
-    std::shared_ptr<ComposerClient> const mComposerClient;
-};
-
-class GraphicsComposerReadbackTest : public ::testing::VtsHalHidlTargetTestBase {
-   public:
-    static int32_t GetBytesPerPixel(PixelFormat pixelFormat) {
-        switch (pixelFormat) {
-            case PixelFormat::RGBA_8888:
-                return 4;
-            case PixelFormat::RGB_888:
-                return 3;
-            default:
-                return -1;
-        }
-    }
-
-    static void fillBuffer(int32_t width, int32_t height, uint32_t stride, void* bufferData,
-                           PixelFormat pixelFormat,
-                           std::vector<IComposerClient::Color> desiredPixelColors) {
-        ASSERT_TRUE(pixelFormat == PixelFormat::RGB_888 || pixelFormat == PixelFormat::RGBA_8888);
-        int32_t bytesPerPixel = GetBytesPerPixel(pixelFormat);
-        ASSERT_NE(-1, bytesPerPixel);
-        for (int row = 0; row < height; row++) {
-            for (int col = 0; col < width; col++) {
-                int pixel = row * width + col;
-                IComposerClient::Color srcColor = desiredPixelColors[pixel];
-
-                int offset = (row * stride + col) * bytesPerPixel;
-                uint8_t* pixelColor = (uint8_t*)bufferData + offset;
-                pixelColor[0] = srcColor.r;
-                pixelColor[1] = srcColor.g;
-                pixelColor[2] = srcColor.b;
-
-                if (bytesPerPixel == 4) {
-                    pixelColor[3] = srcColor.a;
-                }
-            }
-        }
-    }
-
-   protected:
+class GraphicsCompositionTest : public ::testing::VtsHalHidlTargetTestBase {
+  protected:
     using PowerMode = V2_1::IComposerClient::PowerMode;
     void SetUp() override {
         VtsHalHidlTargetTestBase::SetUp();
@@ -173,6 +88,8 @@
             mDisplayHeight = mComposerClient->getDisplayAttribute(
                 mPrimaryDisplay, activeConfig, IComposerClient::Attribute::HEIGHT));
 
+        setTestColorModes();
+
         // explicitly disable vsync
         ASSERT_NO_FATAL_FAILURE(mComposerClient->setVsyncEnabled(mPrimaryDisplay, false));
         mComposerCallback->setVsyncAllowed(false);
@@ -182,22 +99,28 @@
         mReader = std::make_unique<TestCommandReader>();
         mGralloc = std::make_shared<Gralloc>();
 
-        std::vector<ColorMode> colorModes = mComposerClient->getColorModes(mPrimaryDisplay);
-        if (std::find(colorModes.begin(), colorModes.end(), ColorMode::SRGB) == colorModes.end()) {
-            mHasReadbackBuffer = false;
-            return;
-        }
-        mWriter->selectDisplay(mPrimaryDisplay);
-        ASSERT_NO_FATAL_FAILURE(mComposerClient->setColorMode(mPrimaryDisplay, ColorMode::SRGB,
-                                                              RenderIntent::COLORIMETRIC));
-        mComposerClient->getRaw()->getReadbackBufferAttributes(
-            mPrimaryDisplay,
-            [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
-                mHasReadbackBuffer = readbackSupported(tmpPixelFormat, tmpDataspace, tmpError);
-                mPixelFormat = tmpPixelFormat;
-                mDataspace = tmpDataspace;
-            });
         ASSERT_NO_FATAL_FAILURE(mComposerClient->setPowerMode(mPrimaryDisplay, PowerMode::ON));
+
+        ASSERT_NO_FATAL_FAILURE(
+                mTestRenderEngine = std::unique_ptr<TestRenderEngine>(new TestRenderEngine(
+                        renderengine::RenderEngineCreationArgs::Builder()
+                            .setPixelFormat(static_cast<int>(ui::PixelFormat::RGBA_8888))
+                            .setImageCacheSize(TestRenderEngine::sMaxFrameBufferAcquireBuffers)
+                            .setUseColorManagerment(true)
+                            .setEnableProtectedContext(false)
+                            .setPrecacheToneMapperShaderOnly(false)
+                            .setContextPriority(renderengine::RenderEngine::ContextPriority::HIGH)
+                            .build())));
+
+        renderengine::DisplaySettings clientCompositionDisplay;
+        clientCompositionDisplay.physicalDisplay = Rect(mDisplayWidth, mDisplayHeight);
+        clientCompositionDisplay.clip = clientCompositionDisplay.physicalDisplay;
+        clientCompositionDisplay.clearRegion = Region(clientCompositionDisplay.physicalDisplay);
+
+        mTestRenderEngine->initGraphicBuffer(
+                static_cast<uint32_t>(mDisplayWidth), static_cast<uint32_t>(mDisplayHeight), 1,
+                static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN));
+        mTestRenderEngine->setDisplaySettings(clientCompositionDisplay);
     }
 
     void TearDown() override {
@@ -217,10 +140,6 @@
         mReader->mErrors.clear();
     }
 
-    void execute() {
-        ASSERT_NO_FATAL_FAILURE(mComposerClient->execute(mReader.get(), mWriter.get()));
-    }
-
     void writeLayers(const std::vector<std::shared_ptr<TestLayer>>& layers) {
         for (auto layer : layers) {
             layer->write(mWriter);
@@ -228,42 +147,10 @@
         execute();
     }
 
-    void clearColors(std::vector<IComposerClient::Color>& expectedColors, int32_t width,
-                     int32_t height) {
-        for (int row = 0; row < height; row++) {
-            for (int col = 0; col < width; col++) {
-                int pixel = row * mDisplayWidth + col;
-                expectedColors[pixel] = BLACK;
-            }
-        }
+    void execute() {
+        ASSERT_NO_FATAL_FAILURE(mComposerClient->execute(mReader.get(), mWriter.get()));
     }
 
-    void fillColorsArea(std::vector<IComposerClient::Color>& expectedColors, int32_t stride,
-                        IComposerClient::Rect area, IComposerClient::Color color) {
-        for (int row = area.top; row < area.bottom; row++) {
-            for (int col = area.left; col < area.right; col++) {
-                int pixel = row * stride + col;
-                expectedColors[pixel] = color;
-            }
-        }
-    }
-
-    bool readbackSupported(const PixelFormat& pixelFormat, const Dataspace& dataspace,
-                           const Error error) {
-        if (error != Error::NONE) {
-            return false;
-        }
-        // TODO: add support for RGBA_1010102
-        if (pixelFormat != PixelFormat::RGB_888 && pixelFormat != PixelFormat::RGBA_8888) {
-            return false;
-        }
-        if (dataspace != Dataspace::V0_SRGB) {
-            return false;
-        }
-        return true;
-    }
-
-
     std::unique_ptr<Composer> mComposer;
     std::shared_ptr<ComposerClient> mComposerClient;
 
@@ -272,9 +159,11 @@
     Display mPrimaryDisplay;
     int32_t mDisplayWidth;
     int32_t mDisplayHeight;
+    std::vector<ColorMode> mTestColorModes;
     std::shared_ptr<CommandWriterBase> mWriter;
     std::unique_ptr<TestCommandReader> mReader;
     std::shared_ptr<Gralloc> mGralloc;
+    std::unique_ptr<TestRenderEngine> mTestRenderEngine;
 
     bool mHasReadbackBuffer;
     PixelFormat mPixelFormat;
@@ -293,734 +182,776 @@
             return displays[0];
         }
     }
-};
-class ReadbackBuffer {
-   public:
-    ReadbackBuffer(Display display, const std::shared_ptr<ComposerClient>& client,
-                   const std::shared_ptr<Gralloc>& gralloc, uint32_t width, uint32_t height,
-                   PixelFormat pixelFormat, Dataspace dataspace) {
-        mDisplay = display;
 
-        mComposerClient = client;
-        mGralloc = gralloc;
-
-        mFormat = pixelFormat;
-        mDataspace = dataspace;
-
-        mWidth = width;
-        mHeight = height;
-        mLayerCount = 1;
-        mUsage = static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::GPU_TEXTURE);
-
-        mAccessRegion.top = 0;
-        mAccessRegion.left = 0;
-        mAccessRegion.width = width;
-        mAccessRegion.height = height;
-    };
-
-    ~ReadbackBuffer() {
-        if (mBufferHandle != nullptr) {
-            mGralloc->freeBuffer(mBufferHandle);
-        }
-    }
-
-    void setReadbackBuffer() {
-        if (mBufferHandle != nullptr) {
-            mGralloc->freeBuffer(mBufferHandle);
-            mBufferHandle = nullptr;
-        }
-        mBufferHandle = mGralloc->allocate(mWidth, mHeight, mLayerCount, mFormat, mUsage,
-                                           /*import*/ true, &mStride);
-        ASSERT_NE(false, mGralloc->validateBufferSize(mBufferHandle, mWidth, mHeight, mLayerCount,
-                                                      mFormat, mUsage, mStride));
-        ASSERT_NO_FATAL_FAILURE(mComposerClient->setReadbackBuffer(mDisplay, mBufferHandle, -1));
-    }
-
-    void checkReadbackBuffer(std::vector<IComposerClient::Color> expectedColors) {
-        // lock buffer for reading
-        int32_t fenceHandle;
-        ASSERT_NO_FATAL_FAILURE(mComposerClient->getReadbackBufferFence(mDisplay, &fenceHandle));
-
-        void* bufData = mGralloc->lock(mBufferHandle, mUsage, mAccessRegion, fenceHandle);
-        ASSERT_TRUE(mFormat == PixelFormat::RGB_888 || mFormat == PixelFormat::RGBA_8888);
-        int32_t bytesPerPixel = GraphicsComposerReadbackTest::GetBytesPerPixel(mFormat);
-        ASSERT_NE(-1, bytesPerPixel);
-        for (int row = 0; row < mHeight; row++) {
-            for (int col = 0; col < mWidth; col++) {
-                int pixel = row * mWidth + col;
-                int offset = (row * mStride + col) * bytesPerPixel;
-                uint8_t* pixelColor = (uint8_t*)bufData + offset;
-
-                ASSERT_EQ(expectedColors[pixel].r, pixelColor[0]);
-                ASSERT_EQ(expectedColors[pixel].g, pixelColor[1]);
-                ASSERT_EQ(expectedColors[pixel].b, pixelColor[2]);
+    void setTestColorModes() {
+        mTestColorModes.clear();
+        mComposerClient->getRaw()->getColorModes_2_2(mPrimaryDisplay, [&](const auto& tmpError,
+                                                                          const auto& tmpModes) {
+            ASSERT_EQ(Error::NONE, tmpError);
+            for (ColorMode mode : tmpModes) {
+                if (std::find(ReadbackHelper::colorModes.begin(), ReadbackHelper::colorModes.end(),
+                              mode) != ReadbackHelper::colorModes.end()) {
+                    mTestColorModes.push_back(mode);
+                }
             }
-        }
-        int32_t unlockFence = mGralloc->unlock(mBufferHandle);
-        if (unlockFence != -1) {
-            sync_wait(unlockFence, -1);
-            close(unlockFence);
-        }
+        });
     }
-
-    uint32_t mWidth;
-    uint32_t mHeight;
-    uint32_t mLayerCount;
-    PixelFormat mFormat;
-    uint64_t mUsage;
-    AccessRegion mAccessRegion;
-
-  protected:
-    uint32_t mStride;
-    const native_handle_t* mBufferHandle = nullptr;
-    Dataspace mDataspace;
-    Display mDisplay;
-    std::shared_ptr<Gralloc> mGralloc;
-    std::shared_ptr<ComposerClient> mComposerClient;
 };
 
-class TestColorLayer : public TestLayer {
-   public:
-    TestColorLayer(const std::shared_ptr<ComposerClient>& client, Display display)
-        : TestLayer{client, display} {}
-
-    void write(const std::shared_ptr<CommandWriterBase>& writer) override {
-        TestLayer::write(writer);
-        writer->setLayerCompositionType(IComposerClient::Composition::SOLID_COLOR);
-        writer->setLayerColor(mColor);
-    }
-
-    void setColor(IComposerClient::Color color) { mColor = color; }
-
-   private:
-    IComposerClient::Color mColor = {0xff, 0xff, 0xff, 0xff};
-};
-
-class TestBufferLayer : public TestLayer {
-   public:
-    TestBufferLayer(const std::shared_ptr<ComposerClient>& client,
-                    const std::shared_ptr<Gralloc>& gralloc, Display display, int32_t width,
-                    int32_t height, PixelFormat format,
-                    IComposerClient::Composition composition = IComposerClient::Composition::DEVICE)
-        : TestLayer{client, display} {
-        mGralloc = gralloc;
-        mComposition = composition;
-        mWidth = width;
-        mHeight = height;
-        mLayerCount = 1;
-        mFormat = format;
-        mUsage = static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
-                                       BufferUsage::COMPOSER_OVERLAY);
-
-        mAccessRegion.top = 0;
-        mAccessRegion.left = 0;
-        mAccessRegion.width = width;
-        mAccessRegion.height = height;
-
-        setSourceCrop({0, 0, (float)width, (float)height});
-    }
-
-    ~TestBufferLayer() {
-        if (mBufferHandle != nullptr) {
-            mGralloc->freeBuffer(mBufferHandle);
-        }
-    }
-
-    void write(const std::shared_ptr<CommandWriterBase>& writer) override {
-        TestLayer::write(writer);
-        writer->setLayerCompositionType(mComposition);
-        writer->setLayerDataspace(Dataspace::UNKNOWN);
-        writer->setLayerVisibleRegion(std::vector<IComposerClient::Rect>(1, mDisplayFrame));
-        if (mBufferHandle != nullptr) writer->setLayerBuffer(0, mBufferHandle, mFillFence);
-    }
-
-    void fillBuffer(std::vector<IComposerClient::Color> expectedColors) {
-        void* bufData = mGralloc->lock(mBufferHandle, mUsage, mAccessRegion, -1);
-        ASSERT_NO_FATAL_FAILURE(GraphicsComposerReadbackTest::fillBuffer(
-                mWidth, mHeight, mStride, bufData, mFormat, expectedColors));
-        mFillFence = mGralloc->unlock(mBufferHandle);
-        if (mFillFence != -1) {
-            sync_wait(mFillFence, -1);
-            close(mFillFence);
-        }
-    }
-    void setBuffer(std::vector<IComposerClient::Color> colors) {
-        if (mBufferHandle != nullptr) {
-            mGralloc->freeBuffer(mBufferHandle);
-            mBufferHandle = nullptr;
-        }
-        mBufferHandle = mGralloc->allocate(mWidth, mHeight, mLayerCount, mFormat, mUsage,
-                                           /*import*/ true, &mStride);
-        ASSERT_NE(nullptr, mBufferHandle);
-        ASSERT_NO_FATAL_FAILURE(fillBuffer(colors));
-        ASSERT_NE(false, mGralloc->validateBufferSize(mBufferHandle, mWidth, mHeight, mLayerCount,
-                                                      mFormat, mUsage, mStride));
-    }
-
-    void setToClientComposition(const std::shared_ptr<CommandWriterBase>& writer) {
-        writer->selectLayer(mLayer);
-        writer->setLayerCompositionType(IComposerClient::Composition::CLIENT);
-    }
-
-    AccessRegion mAccessRegion;
-    uint32_t mStride;
-    uint32_t mWidth;
-    uint32_t mHeight;
-    uint32_t mLayerCount;
-    PixelFormat mFormat;
-
-  protected:
-    uint64_t mUsage;
-    IComposerClient::Composition mComposition;
-    std::shared_ptr<Gralloc> mGralloc;
-    int32_t mFillFence;
-    const native_handle_t* mBufferHandle = nullptr;
-};
-
-TEST_F(GraphicsComposerReadbackTest, SingleSolidColorLayer) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_F(GraphicsCompositionTest, SingleSolidColorLayer) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
-    }
-
-    auto layer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
-    IComposerClient::Rect coloredSquare({0, 0, mDisplayWidth, mDisplayHeight});
-    layer->setColor(BLUE);
-    layer->setDisplayFrame(coloredSquare);
-    layer->setZOrder(10);
-
-    std::vector<std::shared_ptr<TestLayer>> layers = {layer};
-
-    // expected color for each pixel
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, coloredSquare, BLUE);
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    // if hwc cannot handle and asks for composition change,
-    // just succeed the test
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
-}
-
-TEST_F(GraphicsComposerReadbackTest, SetLayerBuffer) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
-                  << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
-    }
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, {0, 0, mDisplayWidth, mDisplayHeight / 4}, RED);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {0, mDisplayHeight / 4, mDisplayWidth, mDisplayHeight / 2}, GREEN);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight}, BLUE);
-
-    auto layer =
-        std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay, mDisplayWidth,
-                                          mDisplayHeight, PixelFormat::RGBA_8888);
-    layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
-    layer->setZOrder(10);
-    ASSERT_NO_FATAL_FAILURE(layer->setBuffer(expectedColors));
-
-    std::vector<std::shared_ptr<TestLayer>> layers = {layer};
-
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    mWriter->presentDisplay();
-    execute();
-
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
-}
-
-TEST_F(GraphicsComposerReadbackTest, SetLayerBufferNoEffect) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
-                  << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
-    }
-
-
-    auto layer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
-    IComposerClient::Rect coloredSquare({0, 0, mDisplayWidth, mDisplayHeight});
-    layer->setColor(BLUE);
-    layer->setDisplayFrame(coloredSquare);
-    layer->setZOrder(10);
-    layer->write(mWriter);
-
-    // This following buffer call should have no effect
-    PixelFormat format = PixelFormat::RGBA_8888;
-    uint64_t usage =
-            static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN);
-    const native_handle_t* bufferHandle =
-            mGralloc->allocate(mDisplayWidth, mDisplayHeight, 1, format, usage);
-    mWriter->setLayerBuffer(0, bufferHandle, -1);
-
-    // expected color for each pixel
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, coloredSquare, BLUE);
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    mWriter->validateDisplay();
-    execute();
-
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
-}
-
-TEST_F(GraphicsComposerReadbackTest, ClientComposition) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
-                  << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
-    }
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, {0, 0, mDisplayWidth, mDisplayHeight / 4}, RED);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {0, mDisplayHeight / 4, mDisplayWidth, mDisplayHeight / 2}, GREEN);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight}, BLUE);
-
-    auto layer =
-        std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay, mDisplayWidth,
-                                          mDisplayHeight, PixelFormat::RGBA_FP16);
-    layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
-    layer->setZOrder(10);
-
-    std::vector<std::shared_ptr<TestLayer>> layers = {layer};
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-
-    if (mReader->mCompositionChanges.size() != 0) {
-        ASSERT_EQ(1, mReader->mCompositionChanges.size());
-        ASSERT_EQ(1, mReader->mCompositionChanges[0].second);
-
+        mWriter->selectDisplay(mPrimaryDisplay);
         ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        auto layer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
+        IComposerClient::Rect coloredSquare({0, 0, mDisplayWidth, mDisplayHeight});
+        layer->setColor(BLUE);
+        layer->setDisplayFrame(coloredSquare);
+        layer->setZOrder(10);
+
+        std::vector<std::shared_ptr<TestLayer>> layers = {layer};
+
+        // expected color for each pixel
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, coloredSquare, BLUE);
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        // if hwc cannot handle and asks for composition change,
+        // just succeed the test
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(layers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
+    }
+}
+
+TEST_F(GraphicsCompositionTest, SetLayerBuffer) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
+                  << std::endl;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        mWriter->selectDisplay(mPrimaryDisplay);
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, 0, mDisplayWidth, mDisplayHeight / 4}, RED);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, mDisplayHeight / 4, mDisplayWidth, mDisplayHeight / 2},
+                                       GREEN);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight},
+                                       BLUE);
+
+        auto layer = std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay,
+                                                       mDisplayWidth, mDisplayHeight,
+                                                       PixelFormat::RGBA_8888);
+        layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
+        layer->setZOrder(10);
+        layer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
+        ASSERT_NO_FATAL_FAILURE(layer->setBuffer(expectedColors));
+
+        std::vector<std::shared_ptr<TestLayer>> layers = {layer};
+
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        mWriter->presentDisplay();
+        execute();
+
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(layers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
+    }
+}
+
+TEST_F(GraphicsCompositionTest, SetLayerBufferNoEffect) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
+                  << std::endl;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        auto layer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
+        IComposerClient::Rect coloredSquare({0, 0, mDisplayWidth, mDisplayHeight});
+        layer->setColor(BLUE);
+        layer->setDisplayFrame(coloredSquare);
+        layer->setZOrder(10);
+        layer->write(mWriter);
+
+        // This following buffer call should have no effect
+        uint64_t usage =
+                static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN);
+        const native_handle_t* bufferHandle =
+                mGralloc->allocate(mDisplayWidth, mDisplayHeight, 1, PixelFormat::RGBA_8888, usage);
+        mWriter->setLayerBuffer(0, bufferHandle, -1);
+
+        // expected color for each pixel
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, coloredSquare, BLUE);
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        mWriter->validateDisplay();
+        execute();
+
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+    }
+}
+
+TEST_F(GraphicsCompositionTest, ClientComposition) {
+    ASSERT_NO_FATAL_FAILURE(
             mComposerClient->setClientTargetSlotCount(mPrimaryDisplay, kClientTargetSlotCount));
 
-        // create client target buffer
-        uint32_t clientStride;
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
+                  << std::endl;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        mWriter->selectDisplay(mPrimaryDisplay);
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, 0, mDisplayWidth, mDisplayHeight / 4}, RED);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, mDisplayHeight / 4, mDisplayWidth, mDisplayHeight / 2},
+                                       GREEN);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight},
+                                       BLUE);
+
+        auto layer = std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay,
+                                                       mDisplayWidth, mDisplayHeight,
+                                                       PixelFormat::RGBA_FP16);
+        layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
+        layer->setZOrder(10);
+        layer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
+
+        std::vector<std::shared_ptr<TestLayer>> layers = {layer};
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+
+        if (mReader->mCompositionChanges.size() != 0) {
+            ASSERT_EQ(1, mReader->mCompositionChanges.size());
+            ASSERT_EQ(1, mReader->mCompositionChanges[0].second);
+
+            PixelFormat clientFormat = PixelFormat::RGBA_8888;
+            uint64_t clientUsage = static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN |
+                                                         BufferUsage::CPU_WRITE_OFTEN |
+                                                         BufferUsage::COMPOSER_CLIENT_TARGET);
+            Dataspace clientDataspace = ReadbackHelper::getDataspaceForColorMode(mode);
+            IComposerClient::Rect damage{0, 0, mDisplayWidth, mDisplayHeight};
+
+            bool clientTargetSupported = mComposerClient->getClientTargetSupport_2_2(
+                    mPrimaryDisplay, layer->mWidth, layer->mHeight, clientFormat, clientDataspace);
+            // if the client target format is not supported, skip this
+            // configuration
+            if (!clientTargetSupported) {
+                std::cout << "Client target configuration width: " << layer->mWidth
+                          << " height: " << layer->mHeight
+                          << " pixel format: PixelFormat::RGBA_8888 dataspace: "
+                          << ReadbackHelper::getDataspaceString(clientDataspace)
+                          << " unsupported for display" << std::endl;
+                continue;
+            }
+
+            // create client target buffer
+            uint32_t clientStride;
+            const native_handle_t* clientBufferHandle =
+                    mGralloc->allocate(layer->mWidth, layer->mHeight, layer->mLayerCount,
+                                       clientFormat, clientUsage, /*import*/ true, &clientStride);
+            ASSERT_NE(nullptr, clientBufferHandle);
+
+            void* clientBufData =
+                    mGralloc->lock(clientBufferHandle, clientUsage, layer->mAccessRegion, -1);
+
+            ASSERT_NO_FATAL_FAILURE(ReadbackHelper::fillBuffer(layer->mWidth, layer->mHeight,
+                                                               clientStride, clientBufData,
+                                                               clientFormat, expectedColors));
+            int clientFence = mGralloc->unlock(clientBufferHandle);
+            if (clientFence != -1) {
+                sync_wait(clientFence, -1);
+                close(clientFence);
+            }
+
+            mWriter->setClientTarget(0, clientBufferHandle, clientFence, clientDataspace,
+                                     std::vector<IComposerClient::Rect>(1, damage));
+
+            layer->setToClientComposition(mWriter);
+            mWriter->validateDisplay();
+            execute();
+            ASSERT_EQ(0, mReader->mCompositionChanges.size());
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        mWriter->presentDisplay();
+        execute();
+
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+    }
+}
+
+TEST_F(GraphicsCompositionTest, DeviceAndClientComposition) {
+    ASSERT_NO_FATAL_FAILURE(
+            mComposerClient->setClientTargetSlotCount(mPrimaryDisplay, kClientTargetSlotCount));
+
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
+                  << std::endl;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, 0, mDisplayWidth, mDisplayHeight / 2}, GREEN);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight}, RED);
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        auto deviceLayer = std::make_shared<TestBufferLayer>(
+                mComposerClient, mGralloc, mPrimaryDisplay, mDisplayWidth, mDisplayHeight / 2,
+                PixelFormat::RGBA_8888);
+        std::vector<IComposerClient::Color> deviceColors(deviceLayer->mWidth *
+                                                         deviceLayer->mHeight);
+        ReadbackHelper::fillColorsArea(deviceColors, deviceLayer->mWidth,
+                                       {0, 0, static_cast<int32_t>(deviceLayer->mWidth),
+                                        static_cast<int32_t>(deviceLayer->mHeight)},
+                                       GREEN);
+        deviceLayer->setDisplayFrame({0, 0, static_cast<int32_t>(deviceLayer->mWidth),
+                                      static_cast<int32_t>(deviceLayer->mHeight)});
+        deviceLayer->setZOrder(10);
+        deviceLayer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
+        ASSERT_NO_FATAL_FAILURE(deviceLayer->setBuffer(deviceColors));
+        deviceLayer->write(mWriter);
+
         PixelFormat clientFormat = PixelFormat::RGBA_8888;
         uint64_t clientUsage =
                 static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
                                       BufferUsage::COMPOSER_CLIENT_TARGET);
+        Dataspace clientDataspace = ReadbackHelper::getDataspaceForColorMode(mode);
+        int32_t clientWidth = mDisplayWidth;
+        int32_t clientHeight = mDisplayHeight / 2;
+
+        bool clientTargetSupported = mComposerClient->getClientTargetSupport_2_2(
+                mPrimaryDisplay, clientWidth, clientHeight, clientFormat, clientDataspace);
+        // if the client target format is not supported, skip this
+        // configuration
+        if (!clientTargetSupported) {
+            std::cout << "Client target configuration width: " << clientWidth
+                      << " height: " << clientHeight
+                      << " pixel format: PixelFormat::RGBA_8888 dataspace: "
+                      << ReadbackHelper::getDataspaceString(clientDataspace)
+                      << " unsupported for display" << std::endl;
+            continue;
+        }
+
+        auto clientLayer = std::make_shared<TestBufferLayer>(
+                mComposerClient, mGralloc, mPrimaryDisplay, clientWidth, clientHeight,
+                PixelFormat::RGBA_FP16, IComposerClient::Composition::DEVICE);
+        IComposerClient::Rect clientFrame = {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight};
+        clientLayer->setDisplayFrame(clientFrame);
+        clientLayer->setZOrder(0);
+        clientLayer->write(mWriter);
+        mWriter->validateDisplay();
+        execute();
+
+        if (mReader->mCompositionChanges.size() != 1) {
+            std::cout << "HWC asked for none or more than 1 composition change, skipping"
+                      << std::endl;
+            mReader->mCompositionChanges.clear();
+            continue;
+        }
+        // create client target buffer
+        ASSERT_EQ(1, mReader->mCompositionChanges[0].second);
+        uint32_t clientStride;
         const native_handle_t* clientBufferHandle =
-                mGralloc->allocate(layer->mWidth, layer->mHeight, layer->mLayerCount, clientFormat,
-                                   clientUsage, /*import*/ true, &clientStride);
+                mGralloc->allocate(mDisplayWidth, mDisplayHeight, clientLayer->mLayerCount,
+                                   clientFormat, clientUsage, /*import*/ true, &clientStride);
         ASSERT_NE(nullptr, clientBufferHandle);
 
-        void* clientBufData =
-                mGralloc->lock(clientBufferHandle, clientUsage, layer->mAccessRegion, -1);
+        void* clientBufData = mGralloc->lock(clientBufferHandle, clientUsage,
+                                             {0, 0, mDisplayWidth, mDisplayHeight}, -1);
 
-        ASSERT_NO_FATAL_FAILURE(fillBuffer(layer->mWidth, layer->mHeight, clientStride,
-                                           clientBufData, clientFormat, expectedColors));
+        std::vector<IComposerClient::Color> clientColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(clientColors, mDisplayWidth, clientFrame, RED);
+        ASSERT_NO_FATAL_FAILURE(ReadbackHelper::fillBuffer(mDisplayWidth, mDisplayHeight,
+                                                           clientStride, clientBufData,
+                                                           clientFormat, clientColors));
         int clientFence = mGralloc->unlock(clientBufferHandle);
         if (clientFence != -1) {
             sync_wait(clientFence, -1);
             close(clientFence);
         }
 
-        IComposerClient::Rect damage{0, 0, mDisplayWidth, mDisplayHeight};
-        mWriter->setClientTarget(0, clientBufferHandle, clientFence, Dataspace::UNKNOWN,
-                                 std::vector<IComposerClient::Rect>(1, damage));
-
-        layer->setToClientComposition(mWriter);
+        mWriter->setClientTarget(0, clientBufferHandle, clientFence, clientDataspace,
+                                 std::vector<IComposerClient::Rect>(1, clientFrame));
+        clientLayer->setToClientComposition(mWriter);
         mWriter->validateDisplay();
         execute();
         ASSERT_EQ(0, mReader->mCompositionChanges.size());
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
     }
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    mWriter->presentDisplay();
-    execute();
-
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
-TEST_F(GraphicsComposerReadbackTest, DeviceAndClientComposition) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_F(GraphicsCompositionTest, SetLayerDamage) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        mWriter->selectDisplay(mPrimaryDisplay);
+
+        IComposerClient::Rect redRect = {0, 0, mDisplayWidth / 4, mDisplayHeight / 4};
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
+
+        auto layer = std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay,
+                                                       mDisplayWidth, mDisplayHeight,
+                                                       PixelFormat::RGBA_8888);
+        layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
+        layer->setZOrder(10);
+        layer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
+        ASSERT_NO_FATAL_FAILURE(layer->setBuffer(expectedColors));
+
+        std::vector<std::shared_ptr<TestLayer>> layers = {layer};
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+
+        // update surface damage and recheck
+        redRect = {mDisplayWidth / 4, mDisplayHeight / 4, mDisplayWidth / 2, mDisplayHeight / 2};
+        ReadbackHelper::clearColors(expectedColors, mDisplayWidth, mDisplayHeight, mDisplayWidth);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
+
+        ASSERT_NO_FATAL_FAILURE(layer->fillBuffer(expectedColors));
+        layer->setSurfaceDamage(std::vector<IComposerClient::Rect>(
+                1, {0, 0, mDisplayWidth / 2, mDisplayWidth / 2}));
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_EQ(0, mReader->mCompositionChanges.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
     }
-
-    ASSERT_NO_FATAL_FAILURE(
-        mComposerClient->setClientTargetSlotCount(mPrimaryDisplay, kClientTargetSlotCount));
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, {0, 0, mDisplayWidth, mDisplayHeight / 2}, GREEN);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight}, RED);
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    auto deviceLayer =
-        std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay, mDisplayWidth,
-                                          mDisplayHeight / 2, PixelFormat::RGBA_8888);
-    std::vector<IComposerClient::Color> deviceColors(deviceLayer->mWidth * deviceLayer->mHeight);
-    fillColorsArea(deviceColors, deviceLayer->mWidth,
-                   {0, 0, static_cast<int32_t>(deviceLayer->mWidth),
-                    static_cast<int32_t>(deviceLayer->mHeight)},
-                   GREEN);
-    deviceLayer->setDisplayFrame({0, 0, static_cast<int32_t>(deviceLayer->mWidth),
-                                  static_cast<int32_t>(deviceLayer->mHeight)});
-    deviceLayer->setZOrder(10);
-    ASSERT_NO_FATAL_FAILURE(deviceLayer->setBuffer(deviceColors));
-    deviceLayer->write(mWriter);
-
-    auto clientLayer = std::make_shared<TestBufferLayer>(
-        mComposerClient, mGralloc, mPrimaryDisplay, mDisplayWidth, mDisplayHeight / 2,
-        PixelFormat::RGBA_8888, IComposerClient::Composition::CLIENT);
-    IComposerClient::Rect clientFrame = {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight};
-    clientLayer->setDisplayFrame(clientFrame);
-    clientLayer->setZOrder(0);
-    clientLayer->write(mWriter);
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    uint64_t clientUsage =
-            static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
-                                  BufferUsage::COMPOSER_CLIENT_TARGET);
-    uint32_t clientStride;
-    const native_handle_t* clientBufferHandle =
-            mGralloc->allocate(mDisplayWidth, mDisplayHeight, 1, PixelFormat::RGBA_8888,
-                               clientUsage, /*import*/ true, &clientStride);
-    ASSERT_NE(nullptr, clientBufferHandle);
-
-    AccessRegion clientAccessRegion;
-    clientAccessRegion.left = 0;
-    clientAccessRegion.top = 0;
-    clientAccessRegion.width = mDisplayWidth;
-    clientAccessRegion.height = mDisplayHeight;
-    void* clientData = mGralloc->lock(clientBufferHandle, clientUsage, clientAccessRegion, -1);
-    std::vector<IComposerClient::Color> clientColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(clientColors, mDisplayWidth, clientFrame, RED);
-    ASSERT_NO_FATAL_FAILURE(fillBuffer(mDisplayWidth, mDisplayHeight, clientStride, clientData,
-                                       PixelFormat::RGBA_8888, clientColors));
-    int clientFence = mGralloc->unlock(clientBufferHandle);
-    if (clientFence != -1) {
-        sync_wait(clientFence, -1);
-        close(clientFence);
-    }
-
-    mWriter->setClientTarget(0, clientBufferHandle, clientFence, Dataspace::UNKNOWN,
-                             std::vector<IComposerClient::Rect>(1, clientFrame));
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
-TEST_F(GraphicsComposerReadbackTest, SetLayerDamage) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_F(GraphicsCompositionTest, SetLayerPlaneAlpha) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelformat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        auto layer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
+        layer->setColor(RED);
+        layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
+        layer->setZOrder(10);
+        layer->setAlpha(0);
+        layer->setBlendMode(IComposerClient::BlendMode::PREMULTIPLIED);
+
+        std::vector<std::shared_ptr<TestLayer>> layers = {layer};
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(layers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
     }
-
-    IComposerClient::Rect redRect = {0, 0, mDisplayWidth / 4, mDisplayHeight / 4};
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
-
-    auto layer =
-        std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay, mDisplayWidth,
-                                          mDisplayHeight, PixelFormat::RGBA_8888);
-    layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
-    layer->setZOrder(10);
-    ASSERT_NO_FATAL_FAILURE(layer->setBuffer(expectedColors));
-
-    std::vector<std::shared_ptr<TestLayer>> layers = {layer};
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
-
-    // update surface damage and recheck
-    redRect = {mDisplayWidth / 4, mDisplayHeight / 4, mDisplayWidth / 2, mDisplayHeight / 2};
-    clearColors(expectedColors, mDisplayWidth, mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
-
-    ASSERT_NO_FATAL_FAILURE(layer->fillBuffer(expectedColors));
-    layer->setSurfaceDamage(
-        std::vector<IComposerClient::Rect>(1, {0, 0, mDisplayWidth / 2, mDisplayWidth / 2}));
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-    ASSERT_EQ(0, mReader->mCompositionChanges.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
-TEST_F(GraphicsComposerReadbackTest, SetLayerPlaneAlpha) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_F(GraphicsCompositionTest, SetLayerSourceCrop) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        mWriter->selectDisplay(mPrimaryDisplay);
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, 0, mDisplayWidth, mDisplayHeight / 4}, RED);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight},
+                                       BLUE);
+
+        auto layer = std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay,
+                                                       mDisplayWidth, mDisplayHeight,
+                                                       PixelFormat::RGBA_8888);
+        layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
+        layer->setZOrder(10);
+        layer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
+        layer->setSourceCrop({0, static_cast<float>(mDisplayHeight / 2),
+                              static_cast<float>(mDisplayWidth),
+                              static_cast<float>(mDisplayHeight)});
+        ASSERT_NO_FATAL_FAILURE(layer->setBuffer(expectedColors));
+
+        std::vector<std::shared_ptr<TestLayer>> layers = {layer};
+
+        // update expected colors to match crop
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, 0, mDisplayWidth, mDisplayHeight}, BLUE);
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(layers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
     }
-
-    auto layer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
-    layer->setColor(RED);
-    layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
-    layer->setZOrder(10);
-    layer->setAlpha(0);
-    layer->setBlendMode(IComposerClient::BlendMode::PREMULTIPLIED);
-
-    std::vector<std::shared_ptr<TestLayer>> layers = {layer};
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
-TEST_F(GraphicsComposerReadbackTest, SetLayerSourceCrop) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_F(GraphicsCompositionTest, SetLayerZOrder) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        IComposerClient::Rect redRect = {0, 0, mDisplayWidth, mDisplayHeight / 2};
+        IComposerClient::Rect blueRect = {0, mDisplayHeight / 4, mDisplayWidth, mDisplayHeight};
+        auto redLayer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
+        redLayer->setColor(RED);
+        redLayer->setDisplayFrame(redRect);
+
+        auto blueLayer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
+        blueLayer->setColor(BLUE);
+        blueLayer->setDisplayFrame(blueRect);
+        blueLayer->setZOrder(5);
+
+        std::vector<std::shared_ptr<TestLayer>> layers = {redLayer, blueLayer};
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+
+        // red in front of blue
+        redLayer->setZOrder(10);
+
+        // fill blue first so that red will overwrite on overlap
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, blueRect, BLUE);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+
+        redLayer->setZOrder(1);
+        ReadbackHelper::clearColors(expectedColors, mDisplayWidth, mDisplayHeight, mDisplayWidth);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, blueRect, BLUE);
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mCompositionChanges.size());
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(layers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
     }
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, {0, 0, mDisplayWidth, mDisplayHeight / 4}, RED);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight}, BLUE);
-
-    auto layer =
-        std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay, mDisplayWidth,
-                                          mDisplayHeight, PixelFormat::RGBA_8888);
-    layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
-    layer->setZOrder(10);
-    layer->setSourceCrop({0, static_cast<float>(mDisplayHeight / 2),
-                          static_cast<float>(mDisplayWidth), static_cast<float>(mDisplayHeight)});
-    ASSERT_NO_FATAL_FAILURE(layer->setBuffer(expectedColors));
-
-    std::vector<std::shared_ptr<TestLayer>> layers = {layer};
-
-    // update expected colors to match crop
-    fillColorsArea(expectedColors, mDisplayWidth, {0, 0, mDisplayWidth, mDisplayHeight}, BLUE);
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
-TEST_F(GraphicsComposerReadbackTest, SetLayerZOrder) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
-                  << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
-    }
-
-    IComposerClient::Rect redRect = {0, 0, mDisplayWidth, mDisplayHeight / 2};
-    IComposerClient::Rect blueRect = {0, mDisplayHeight / 4, mDisplayWidth, mDisplayHeight};
-    auto redLayer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
-    redLayer->setColor(RED);
-    redLayer->setDisplayFrame(redRect);
-
-    auto blueLayer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
-    blueLayer->setColor(BLUE);
-    blueLayer->setDisplayFrame(blueRect);
-    blueLayer->setZOrder(5);
-
-    std::vector<std::shared_ptr<TestLayer>> layers = {redLayer, blueLayer};
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-
-    // red in front of blue
-    redLayer->setZOrder(10);
-
-    // fill blue first so that red will overwrite on overlap
-    fillColorsArea(expectedColors, mDisplayWidth, blueRect, BLUE);
-    fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
-
-    redLayer->setZOrder(1);
-    clearColors(expectedColors, mDisplayWidth, mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
-    fillColorsArea(expectedColors, mDisplayWidth, blueRect, BLUE);
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mCompositionChanges.size());
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
-}
-
-class GraphicsComposerBlendModeReadbackTest : public GraphicsComposerReadbackTest,
-                                              public ::testing::WithParamInterface<float> {
-   public:
+class GraphicsBlendModeCompositionTest : public GraphicsCompositionTest,
+                                         public ::testing::WithParamInterface<float> {
+  public:
     void SetUp() override {
-        GraphicsComposerReadbackTest::SetUp();
+        GraphicsCompositionTest::SetUp();
+        mTestColorModes = {ColorMode::SRGB};  // TODO: add more color mode support
         mBackgroundColor = BLACK;
         mTopLayerColor = RED;
     }
 
-    void TearDown() override { GraphicsComposerReadbackTest::TearDown(); }
+    void TearDown() override { GraphicsCompositionTest::TearDown(); }
 
     void setBackgroundColor(IComposerClient::Color color) { mBackgroundColor = color; }
 
@@ -1029,8 +960,8 @@
     void setUpLayers(IComposerClient::BlendMode blendMode) {
         mLayers.clear();
         std::vector<IComposerClient::Color> topLayerPixelColors(mDisplayWidth * mDisplayHeight);
-        fillColorsArea(topLayerPixelColors, mDisplayWidth, {0, 0, mDisplayWidth, mDisplayHeight},
-                       mTopLayerColor);
+        ReadbackHelper::fillColorsArea(topLayerPixelColors, mDisplayWidth,
+                                       {0, 0, mDisplayWidth, mDisplayHeight}, mTopLayerColor);
 
         auto backgroundLayer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
         backgroundLayer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
@@ -1042,6 +973,7 @@
                                                        PixelFormat::RGBA_8888);
         layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
         layer->setZOrder(10);
+        layer->setDataspace(Dataspace::UNKNOWN, mWriter);
         ASSERT_NO_FATAL_FAILURE(layer->setBuffer(topLayerPixelColors));
 
         layer->setBlendMode(blendMode);
@@ -1053,7 +985,7 @@
 
     void setExpectedColors(std::vector<IComposerClient::Color>& expectedColors) {
         ASSERT_EQ(2, mLayers.size());
-        clearColors(expectedColors, mDisplayWidth, mDisplayHeight);
+        ReadbackHelper::clearColors(expectedColors, mDisplayWidth, mDisplayHeight, mDisplayWidth);
 
         auto layer = mLayers[1];
         IComposerClient::BlendMode blendMode = layer->mBlendMode;
@@ -1091,122 +1023,180 @@
     IComposerClient::Color mTopLayerColor;
 };
 
-TEST_P(GraphicsComposerBlendModeReadbackTest, None) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_P(GraphicsBlendModeCompositionTest, None) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        mWriter->selectDisplay(mPrimaryDisplay);
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+
+        setBackgroundColor(BLACK);
+        setTopLayerColor(TRANSLUCENT_RED);
+        setUpLayers(IComposerClient::BlendMode::NONE);
+        setExpectedColors(expectedColors);
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+        writeLayers(mLayers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(mLayers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
     }
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-
-    setBackgroundColor(BLACK);
-    setTopLayerColor(TRANSLUCENT_RED);
-    setUpLayers(IComposerClient::BlendMode::NONE);
-    setExpectedColors(expectedColors);
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-    writeLayers(mLayers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
 // TODO: bug 116865056: Readback returns (245, 0, 0) for layer plane
 // alpha of .2, expected 10.2
-TEST_P(GraphicsComposerBlendModeReadbackTest, DISABLED_Coverage) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_P(GraphicsBlendModeCompositionTest, DISABLED_Coverage) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        mWriter->selectDisplay(mPrimaryDisplay);
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+
+        setBackgroundColor(BLACK);
+        setTopLayerColor(TRANSLUCENT_RED);
+
+        setUpLayers(IComposerClient::BlendMode::COVERAGE);
+        setExpectedColors(expectedColors);
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+        writeLayers(mLayers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
     }
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-
-    setBackgroundColor(BLACK);
-    setTopLayerColor(TRANSLUCENT_RED);
-
-    setUpLayers(IComposerClient::BlendMode::COVERAGE);
-    setExpectedColors(expectedColors);
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-    writeLayers(mLayers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
-TEST_P(GraphicsComposerBlendModeReadbackTest, Premultiplied) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_P(GraphicsBlendModeCompositionTest, Premultiplied) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+        mWriter->selectDisplay(mPrimaryDisplay);
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+
+        setBackgroundColor(BLACK);
+        setTopLayerColor(TRANSLUCENT_RED);
+        setUpLayers(IComposerClient::BlendMode::PREMULTIPLIED);
+        setExpectedColors(expectedColors);
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+        writeLayers(mLayers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(mLayers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
     }
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-
-    setBackgroundColor(BLACK);
-    setTopLayerColor(TRANSLUCENT_RED);
-    setUpLayers(IComposerClient::BlendMode::PREMULTIPLIED);
-    setExpectedColors(expectedColors);
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-    writeLayers(mLayers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
-INSTANTIATE_TEST_CASE_P(BlendModeTest, GraphicsComposerBlendModeReadbackTest,
+INSTANTIATE_TEST_CASE_P(BlendModeTest, GraphicsBlendModeCompositionTest,
                         ::testing::Values(.2, 1.0));
 
-class GraphicsComposerTransformReadbackTest : public GraphicsComposerReadbackTest {
-   protected:
+class GraphicsTransformCompositionTest : public GraphicsCompositionTest {
+  protected:
     void SetUp() override {
-        GraphicsComposerReadbackTest::SetUp();
+        GraphicsCompositionTest::SetUp();
+
+        mWriter->selectDisplay(mPrimaryDisplay);
 
         auto backgroundLayer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
         backgroundLayer->setColor({0, 0, 0, 0});
@@ -1225,8 +1215,8 @@
         mLayer->setZOrder(10);
 
         std::vector<IComposerClient::Color> baseColors(mSideLength * mSideLength);
-        fillColorsArea(baseColors, mSideLength, redRect, RED);
-        fillColorsArea(baseColors, mSideLength, blueRect, BLUE);
+        ReadbackHelper::fillColorsArea(baseColors, mSideLength, redRect, RED);
+        ReadbackHelper::fillColorsArea(baseColors, mSideLength, blueRect, BLUE);
         ASSERT_NO_FATAL_FAILURE(mLayer->setBuffer(baseColors));
 
         mLayers = {backgroundLayer, mLayer};
@@ -1239,110 +1229,170 @@
     int mSideLength;
 };
 
-TEST_F(GraphicsComposerTransformReadbackTest, FLIP_H) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_F(GraphicsTransformCompositionTest, FLIP_H) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
-    }
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-    mLayer->setTransform(Transform::FLIP_H);
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {mSideLength / 2, 0, mSideLength, mSideLength / 2}, RED);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {0, mSideLength / 2, mSideLength / 2, mSideLength}, BLUE);
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
 
-    writeLayers(mLayers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
 
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+        mLayer->setTransform(Transform::FLIP_H);
+        mLayer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {mSideLength / 2, 0, mSideLength, mSideLength / 2}, RED);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, mSideLength / 2, mSideLength / 2, mSideLength}, BLUE);
+
+        writeLayers(mLayers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(mLayers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
+    }
 }
 
-TEST_F(GraphicsComposerTransformReadbackTest, FLIP_V) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_F(GraphicsTransformCompositionTest, FLIP_V) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        mLayer->setTransform(Transform::FLIP_V);
+        mLayer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, mSideLength / 2, mSideLength / 2, mSideLength}, RED);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {mSideLength / 2, 0, mSideLength, mSideLength / 2}, BLUE);
+
+        writeLayers(mLayers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(mLayers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
     }
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    mLayer->setTransform(Transform::FLIP_V);
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {0, mSideLength / 2, mSideLength / 2, mSideLength}, RED);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {mSideLength / 2, 0, mSideLength, mSideLength / 2}, BLUE);
-
-    writeLayers(mLayers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
-TEST_F(GraphicsComposerTransformReadbackTest, ROT_180) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_F(GraphicsTransformCompositionTest, ROT_180) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        mLayer->setTransform(Transform::ROT_180);
+        mLayer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {mSideLength / 2, mSideLength / 2, mSideLength, mSideLength},
+                                       RED);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, 0, mSideLength / 2, mSideLength / 2}, BLUE);
+
+        writeLayers(mLayers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(mLayers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
     }
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    mLayer->setTransform(Transform::ROT_180);
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {mSideLength / 2, mSideLength / 2, mSideLength, mSideLength}, RED);
-    fillColorsArea(expectedColors, mDisplayWidth, {0, 0, mSideLength / 2, mSideLength / 2}, BLUE);
-
-    writeLayers(mLayers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
 }  // anonymous namespace
diff --git a/graphics/composer/2.3/default/Android.bp b/graphics/composer/2.3/default/Android.bp
index 59b9436..a5696dd 100644
--- a/graphics/composer/2.3/default/Android.bp
+++ b/graphics/composer/2.3/default/Android.bp
@@ -28,8 +28,8 @@
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.2",
         "android.hardware.graphics.composer@2.3",
-        "android.hardware.graphics.mapper@2.0",
-        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.composer@2.1-resources",
+        "android.hardware.graphics.composer@2.2-resources",
         "libbase",
         "libbinder",
         "libcutils",
diff --git a/graphics/composer/2.3/utils/OWNERS b/graphics/composer/2.3/utils/OWNERS
index b3ea6be..cc6d937 100644
--- a/graphics/composer/2.3/utils/OWNERS
+++ b/graphics/composer/2.3/utils/OWNERS
@@ -2,7 +2,3 @@
 lpy@google.com
 stoza@google.com
 vhau@google.com
-
-# VTS team
-yim@google.com
-zhuoyao@google.com
diff --git a/graphics/composer/2.3/utils/command-buffer/Android.bp b/graphics/composer/2.3/utils/command-buffer/Android.bp
index c48fe7a..36ac297 100644
--- a/graphics/composer/2.3/utils/command-buffer/Android.bp
+++ b/graphics/composer/2.3/utils/command-buffer/Android.bp
@@ -3,12 +3,15 @@
     defaults: ["hidl_defaults"],
     vendor_available: true,
     shared_libs: [
-        "android.hardware.graphics.composer@2.1",
-        "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.3",
+    ],
+    export_shared_lib_headers: [
         "android.hardware.graphics.composer@2.3",
     ],
     header_libs: [
-        "android.hardware.graphics.composer@2.1-command-buffer",
+        "android.hardware.graphics.composer@2.2-command-buffer",
+    ],
+    export_header_lib_headers: [
         "android.hardware.graphics.composer@2.2-command-buffer",
     ],
     export_include_dirs: ["include"],
diff --git a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerClient.h b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerClient.h
index b289b6a..041fbc8 100644
--- a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerClient.h
+++ b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerClient.h
@@ -21,9 +21,9 @@
 #endif
 
 #include <android/hardware/graphics/composer/2.3/IComposerClient.h>
-#include <composer-hal/2.2/ComposerResources.h>
 #include <composer-hal/2.3/ComposerCommandEngine.h>
 #include <composer-hal/2.3/ComposerHal.h>
+#include <composer-resources/2.2/ComposerResources.h>
 
 namespace android {
 namespace hardware {
@@ -184,18 +184,18 @@
     }
 
   protected:
+    using BaseType2_1 = V2_1::hal::detail::ComposerClientImpl<Interface, Hal>;
+    using BaseType2_1::mHal;
+    using BaseType2_1::mResources;
     std::unique_ptr<V2_1::hal::ComposerCommandEngine> createCommandEngine() override {
         return std::make_unique<ComposerCommandEngine>(
             mHal, static_cast<V2_2::hal::ComposerResources*>(mResources.get()));
     }
 
-   private:
+  private:
     using BaseType2_2 = V2_2::hal::detail::ComposerClientImpl<Interface, Hal>;
-    using BaseType2_1 = V2_1::hal::detail::ComposerClientImpl<Interface, Hal>;
     using BaseType2_1::mCommandEngine;
     using BaseType2_1::mCommandEngineMutex;
-    using BaseType2_1::mHal;
-    using BaseType2_1::mResources;
 };
 
 }  // namespace detail
diff --git a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerCommandEngine.h b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerCommandEngine.h
index 1a40d96..329dbed 100644
--- a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerCommandEngine.h
+++ b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerCommandEngine.h
@@ -23,8 +23,8 @@
 #include <composer-command-buffer/2.3/ComposerCommandBuffer.h>
 #include <composer-hal/2.1/ComposerCommandEngine.h>
 #include <composer-hal/2.2/ComposerCommandEngine.h>
-#include <composer-hal/2.2/ComposerResources.h>
 #include <composer-hal/2.3/ComposerHal.h>
+#include <composer-resources/2.2/ComposerResources.h>
 
 namespace android {
 namespace hardware {
diff --git a/graphics/composer/2.3/utils/vts/Android.bp b/graphics/composer/2.3/utils/vts/Android.bp
index 2fe6cd6..f65a9c4 100644
--- a/graphics/composer/2.3/utils/vts/Android.bp
+++ b/graphics/composer/2.3/utils/vts/Android.bp
@@ -21,22 +21,17 @@
         "ComposerVts.cpp",
     ],
     static_libs: [
-        "VtsHalHidlTargetTestBase",
-        "android.hardware.graphics.composer@2.1",
-        "android.hardware.graphics.composer@2.1-vts",
-        "android.hardware.graphics.composer@2.2",
         "android.hardware.graphics.composer@2.2-vts",
         "android.hardware.graphics.composer@2.3",
-	"android.hardware.graphics.mapper@2.0",
-	"android.hardware.graphics.mapper@2.0-vts",
-	"android.hardware.graphics.mapper@2.1",
-	"android.hardware.graphics.mapper@2.1-vts",
-	"android.hardware.graphics.mapper@3.0",
-	"android.hardware.graphics.mapper@3.0-vts",
+    ],
+    export_static_lib_headers: [
+        "android.hardware.graphics.composer@2.2-vts",
+        "android.hardware.graphics.composer@2.3",
     ],
     header_libs: [
-        "android.hardware.graphics.composer@2.1-command-buffer",
-        "android.hardware.graphics.composer@2.2-command-buffer",
+        "android.hardware.graphics.composer@2.3-command-buffer",
+    ],
+    export_header_lib_headers: [
         "android.hardware.graphics.composer@2.3-command-buffer",
     ],
     cflags: [
diff --git a/graphics/composer/2.3/vts/functional/Android.bp b/graphics/composer/2.3/vts/functional/Android.bp
index e421889..b729062 100644
--- a/graphics/composer/2.3/vts/functional/Android.bp
+++ b/graphics/composer/2.3/vts/functional/Android.bp
@@ -28,6 +28,7 @@
     static_libs: [
         "android.hardware.graphics.allocator@2.0",
         "android.hardware.graphics.allocator@3.0",
+        "android.hardware.graphics.allocator@4.0",
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.1-vts",
         "android.hardware.graphics.composer@2.2",
@@ -40,6 +41,8 @@
         "android.hardware.graphics.mapper@2.1-vts",
         "android.hardware.graphics.mapper@3.0",
         "android.hardware.graphics.mapper@3.0-vts",
+        "android.hardware.graphics.mapper@4.0",
+        "android.hardware.graphics.mapper@4.0-vts",
     ],
     header_libs: [
         "android.hardware.graphics.composer@2.1-command-buffer",
diff --git a/graphics/composer/2.4/Android.bp b/graphics/composer/2.4/Android.bp
new file mode 100644
index 0000000..5f700be
--- /dev/null
+++ b/graphics/composer/2.4/Android.bp
@@ -0,0 +1,25 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.graphics.composer@2.4",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IComposer.hal",
+        "IComposerCallback.hal",
+        "IComposerClient.hal",
+    ],
+    interfaces: [
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.common@1.1",
+        "android.hardware.graphics.common@1.2",
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.3",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: false,
+}
diff --git a/graphics/composer/2.4/IComposer.hal b/graphics/composer/2.4/IComposer.hal
new file mode 100644
index 0000000..d3b3cb6
--- /dev/null
+++ b/graphics/composer/2.4/IComposer.hal
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.composer@2.4;
+
+import IComposerClient;
+import @2.1::Error;
+import @2.3::IComposer;
+
+interface IComposer extends @2.3::IComposer {
+    /**
+     * Creates a v2.4 client of the composer. Supersedes @2.3::createClient.
+     *
+     * @return error is NONE upon success. Otherwise,
+     *         NO_RESOURCES when the client could not be created.
+     * @return client is the newly created client.
+     */
+    createClient_2_4() generates (Error error, IComposerClient client);
+};
diff --git a/graphics/composer/2.4/IComposerCallback.hal b/graphics/composer/2.4/IComposerCallback.hal
new file mode 100644
index 0000000..5c3f8bd
--- /dev/null
+++ b/graphics/composer/2.4/IComposerCallback.hal
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.composer@2.4;
+
+import @2.1::Display;
+import @2.1::IComposerCallback;
+
+interface IComposerCallback extends @2.1::IComposerCallback {
+    /**
+     * Notifies the client that a vsync event has occurred. This callback must
+     * only be triggered when vsync is enabled for this display (through
+     * setVsyncEnabled).
+     *
+     * @param display is the display which has received a vsync event
+     * @param timestamp is the CLOCK_MONOTONIC time at which the vsync event
+     *        occurred, in nanoseconds.
+     * @param vsyncPeriodNanos is the display vsync period in nanoseconds i.e. the next onVsync_2_4
+     *        is expected to be called vsyncPeriodNanos nanoseconds after this call.
+     */
+    oneway onVsync_2_4(Display display, int64_t timestamp, VsyncPeriodNanos vsyncPeriodNanos);
+};
diff --git a/graphics/composer/2.4/IComposerClient.hal b/graphics/composer/2.4/IComposerClient.hal
new file mode 100644
index 0000000..c2102d5
--- /dev/null
+++ b/graphics/composer/2.4/IComposerClient.hal
@@ -0,0 +1,159 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.composer@2.4;
+
+import IComposerCallback;
+import @2.1::Config;
+import @2.1::Display;
+import @2.1::Error;
+import @2.3::IComposerClient;
+
+interface IComposerClient extends @2.3::IComposerClient {
+    /**
+     * Required capabilities which are supported by the display. The
+     * particular set of supported capabilities for a given display may be
+     * retrieved using getDisplayCapabilities.
+     */
+    enum DisplayCapability : @2.3::IComposerClient.DisplayCapability {
+        /**
+         * Indicates that the display supports protected contents.
+         * When returned, hardware composer must be able to accept client target
+         * with protected buffers.
+         */
+        PROTECTED_CONTENTS = 4,
+    };
+
+    /**
+     * Supersedes {@link @2.1::IComposerClient.DisplayType}.
+     */
+    enum DisplayConnectionType : uint32_t {
+        /**
+         * Display is connected through internal port, e.g. DSI, eDP.
+         */
+        INTERNAL = 0,
+        /**
+         * Display is connected through external port, e.g. HDMI, DisplayPort.
+         */
+        EXTERNAL = 1,
+    };
+
+    /**
+     * Constraints for changing vsync period.
+     */
+    struct VsyncPeriodChangeConstraints {
+        /**
+         * Time in CLOCK_MONOTONIC after which the vsync period may change
+         * (i.e., the vsync period must not change before this time).
+         */
+        int64_t desiredTimeNanos;
+        /**
+         * If true, requires that the vsync period change must happen seamlessly without
+         * a noticeable visual artifact.
+         */
+        bool seamlessRequired;
+    };
+
+    /**
+     * Provides a IComposerCallback object for the device to call.
+     *
+     * This function must be called only once.
+     *
+     * @param callback is the IComposerCallback object.
+     */
+    @entry
+    registerCallback_2_4(IComposerCallback callback);
+
+    /**
+     * Provides a list of supported capabilities (as described in the
+     * definition of DisplayCapability above). This list must not change after
+     * initialization.
+     *
+     * @return error is NONE upon success. Otherwise,
+     *     BAD_DISPLAY when an invalid display handle was passed in.
+     * @return capabilities is a list of supported capabilities.
+     */
+    getDisplayCapabilities_2_4(Display display)
+        generates (Error error, vec<DisplayCapability> capabilities);
+
+    /**
+     * Returns whether the given physical display is internal or external.
+     *
+     * @return error is NONE upon success. Otherwise,
+     *     BAD_DISPLAY when the given display is invalid or virtual.
+     * @return type is the connection type of the display.
+     */
+    getDisplayConnectionType(Display display) generates (Error error, DisplayConnectionType type);
+
+    /**
+     * Provides a list of the vsync periods supported by the display in the given configuration
+     *
+     * @param display is the display for which the vsync periods are queried.
+     * @param config is the display configuration for which the vsync periods are queried.
+     *
+     * @return error is NONE upon success. Otherwise,
+     *     BAD_DISPLAY when an invalid display handle was passed in.
+     *     BAD_CONFIG when an invalid config handle was passed in.
+     * @return supportedVsyncPeriods is a list of supported vsync periods.
+     */
+    getSupportedDisplayVsyncPeriods(Display display, Config config)
+        generates (Error error, vec<VsyncPeriodNanos> supportedVsyncPeriods);
+
+    /**
+     * Retrieves which vsync period the display is currently using.
+     *
+     * If no display configuration is currently active, this function must
+     * return BAD_CONFIG. If the vsync period is about to change due to a
+     * setActiveConfigAndVsyncPeriod call, this function must return the current vsync period
+     * until the change takes place.
+     *
+     * @param display is the display for which the vsync period is queried.
+     * @return error is NONE upon success. Otherwise,
+     *         BAD_DISPLAY when an invalid display handle was passed in.
+     *         BAD_CONFIG when no configuration is currently active.
+     * @return vsyncPeriodNanos is the current vsync period of the display.
+     */
+    getDisplayVsyncPeriod(Display display)
+        generates (Error error, VsyncPeriodNanos vsyncPeriodNanos);
+
+    /**
+     * Sets the active configuration and the refresh rate for this display.
+     * If the config is the same as the current config, only the vsync period shall change.
+     * Upon returning, the given display configuration, except vsync period, must be active and
+     * remain so until either this function is called again or the display is disconnected.
+     * When the display starts to refresh at the new vsync period, onVsync_2_4 callback must be
+     * called with the new vsync period.
+     *
+     * @param display is the display for which the active config is set.
+     * @param config is the new display configuration.
+     * @param vsyncPeriodNanos is the new display vsync period.
+     * @param vsyncPeriodChangeConstraints are the constraints required for changing vsync period.
+     *
+     * @return error is NONE upon success. Otherwise,
+     *         BAD_DISPLAY when an invalid display handle was passed in.
+     *         BAD_CONFIG when the configuration handle passed in is not valid
+     *                    for this display.
+     *         BAD_VSYNC_PERIOD when an invalid vsync period is passed in.
+     *         SEAMLESS_NOT_POSSIBLE when seamlessRequired was true but the display cannot achieve
+     *                               the vsync period change without a noticeable visual artifact.
+     * @return newVsyncAppliedTime is the time in CLOCK_MONOTONIC when the new display will start to
+     *                             refresh at the new vsync period.
+     */
+    setActiveConfigAndVsyncPeriod(Display display, Config config,
+        VsyncPeriodNanos vsyncPeriodNanos,
+        VsyncPeriodChangeConstraints vsyncPeriodChangeConstraints)
+        generates (Error error, int64_t newVsyncAppliedTime);
+};
diff --git a/graphics/composer/2.4/default/Android.bp b/graphics/composer/2.4/default/Android.bp
new file mode 100644
index 0000000..a30609b
--- /dev/null
+++ b/graphics/composer/2.4/default/Android.bp
@@ -0,0 +1,46 @@
+//
+// Copyright 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_binary {
+    name: "android.hardware.graphics.composer@2.4-service",
+    defaults: ["hidl_defaults"],
+    vendor: true,
+    relative_install_path: "hw",
+    srcs: ["service.cpp"],
+    init_rc: ["android.hardware.graphics.composer@2.4-service.rc"],
+    header_libs: [
+        "android.hardware.graphics.composer@2.4-passthrough",
+    ],
+    shared_libs: [
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.3",
+        "android.hardware.graphics.composer@2.4",
+        "android.hardware.graphics.composer@2.1-resources",
+        "android.hardware.graphics.composer@2.2-resources",
+        "libbase",
+        "libbinder",
+        "libcutils",
+        "libfmq",
+        "libhardware",
+        "libhidlbase",
+        "libhwc2on1adapter",
+        "libhwc2onfbadapter",
+        "liblog",
+        "libsync",
+        "libutils",
+    ],
+}
diff --git a/graphics/composer/2.4/default/OWNERS b/graphics/composer/2.4/default/OWNERS
new file mode 100644
index 0000000..cc6d937
--- /dev/null
+++ b/graphics/composer/2.4/default/OWNERS
@@ -0,0 +1,4 @@
+# Graphics team
+lpy@google.com
+stoza@google.com
+vhau@google.com
diff --git a/graphics/composer/2.4/default/android.hardware.graphics.composer@2.4-service.rc b/graphics/composer/2.4/default/android.hardware.graphics.composer@2.4-service.rc
new file mode 100644
index 0000000..a296b0a
--- /dev/null
+++ b/graphics/composer/2.4/default/android.hardware.graphics.composer@2.4-service.rc
@@ -0,0 +1,7 @@
+service vendor.hwcomposer-2-4 /vendor/bin/hw/android.hardware.graphics.composer@2.4-service
+    class hal animation
+    user system
+    group graphics drmrpc
+    capabilities SYS_NICE
+    onrestart restart surfaceflinger
+    writepid /dev/cpuset/system-background/tasks
diff --git a/graphics/composer/2.4/default/service.cpp b/graphics/composer/2.4/default/service.cpp
new file mode 100644
index 0000000..98dac3e
--- /dev/null
+++ b/graphics/composer/2.4/default/service.cpp
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sched.h>
+
+#include <android/hardware/graphics/composer/2.4/IComposer.h>
+#include <binder/ProcessState.h>
+#include <composer-passthrough/2.4/HwcLoader.h>
+#include <hidl/HidlTransportSupport.h>
+
+using android::hardware::graphics::composer::V2_4::IComposer;
+using android::hardware::graphics::composer::V2_4::passthrough::HwcLoader;
+
+int main() {
+    // the conventional HAL might start binder services
+    android::ProcessState::initWithDriver("/dev/vndbinder");
+    android::ProcessState::self()->setThreadPoolMaxThreadCount(4);
+    android::ProcessState::self()->startThreadPool();
+
+    // same as SF main thread
+    struct sched_param param = {0};
+    param.sched_priority = 2;
+    if (sched_setscheduler(0, SCHED_FIFO | SCHED_RESET_ON_FORK, &param) != 0) {
+        ALOGE("Couldn't set SCHED_FIFO: %d", errno);
+    }
+
+    android::hardware::configureRpcThreadpool(4, true /* will join */);
+
+    android::sp<IComposer> composer = HwcLoader::load();
+    if (composer == nullptr) {
+        return 1;
+    }
+    if (composer->registerAsService() != android::NO_ERROR) {
+        ALOGE("failed to register service");
+        return 1;
+    }
+
+    android::hardware::joinRpcThreadpool();
+
+    ALOGE("service is terminating");
+    return 1;
+}
diff --git a/graphics/composer/2.4/types.hal b/graphics/composer/2.4/types.hal
new file mode 100644
index 0000000..b45d7a6
--- /dev/null
+++ b/graphics/composer/2.4/types.hal
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.composer@2.4;
+
+import @2.1::Error;
+
+enum Error : @2.1::Error {
+    /**
+     * Invalid vsync period
+     */
+    BAD_VSYNC_PERIOD = 9,
+    /**
+     * Seamless requirements cannot be met
+     */
+    SEAMLESS_NOT_POSSIBLE = 10,
+};
+
+typedef uint32_t VsyncPeriodNanos;
diff --git a/graphics/composer/2.4/utils/OWNERS b/graphics/composer/2.4/utils/OWNERS
new file mode 100644
index 0000000..cc6d937
--- /dev/null
+++ b/graphics/composer/2.4/utils/OWNERS
@@ -0,0 +1,4 @@
+# Graphics team
+lpy@google.com
+stoza@google.com
+vhau@google.com
diff --git a/graphics/composer/2.4/utils/command-buffer/Android.bp b/graphics/composer/2.4/utils/command-buffer/Android.bp
new file mode 100644
index 0000000..8acf0e1
--- /dev/null
+++ b/graphics/composer/2.4/utils/command-buffer/Android.bp
@@ -0,0 +1,18 @@
+cc_library_headers {
+    name: "android.hardware.graphics.composer@2.4-command-buffer",
+    defaults: ["hidl_defaults"],
+    vendor_available: true,
+    shared_libs: [
+        "android.hardware.graphics.composer@2.4",
+    ],
+    export_shared_lib_headers: [
+        "android.hardware.graphics.composer@2.4",
+    ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.3-command-buffer",
+    ],
+    export_header_lib_headers: [
+        "android.hardware.graphics.composer@2.3-command-buffer",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/graphics/composer/2.4/utils/command-buffer/include/composer-command-buffer/2.4/ComposerCommandBuffer.h b/graphics/composer/2.4/utils/command-buffer/include/composer-command-buffer/2.4/ComposerCommandBuffer.h
new file mode 100644
index 0000000..cb391be
--- /dev/null
+++ b/graphics/composer/2.4/utils/command-buffer/include/composer-command-buffer/2.4/ComposerCommandBuffer.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#ifndef LOG_TAG
+#warn "ComposerCommandBuffer.h included without LOG_TAG"
+#endif
+
+#undef LOG_NDEBUG
+#define LOG_NDEBUG 0
+
+#include <android/hardware/graphics/composer/2.4/IComposer.h>
+#include <android/hardware/graphics/composer/2.4/IComposerClient.h>
+#include <composer-command-buffer/2.3/ComposerCommandBuffer.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+
+using android::hardware::MessageQueue;
+using android::hardware::graphics::composer::V2_4::Error;
+using android::hardware::graphics::composer::V2_4::IComposerClient;
+
+// This class helps build a command queue.  Note that all sizes/lengths are in
+// units of uint32_t's.
+class CommandWriterBase : public V2_3::CommandWriterBase {
+  public:
+    CommandWriterBase(uint32_t initialMaxSize) : V2_3::CommandWriterBase(initialMaxSize) {}
+};
+
+// This class helps parse a command queue.  Note that all sizes/lengths are in
+// units of uint32_t's.
+class CommandReaderBase : public V2_3::CommandReaderBase {
+  public:
+    CommandReaderBase() : V2_3::CommandReaderBase(){};
+};
+
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/utils/hal/Android.bp b/graphics/composer/2.4/utils/hal/Android.bp
new file mode 100644
index 0000000..3ee4e19
--- /dev/null
+++ b/graphics/composer/2.4/utils/hal/Android.bp
@@ -0,0 +1,36 @@
+//
+// Copyright 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_headers {
+    name: "android.hardware.graphics.composer@2.4-hal",
+    defaults: ["hidl_defaults"],
+    vendor_available: true,
+    shared_libs: [
+        "android.hardware.graphics.composer@2.4",
+    ],
+    export_shared_lib_headers: [
+        "android.hardware.graphics.composer@2.4",
+    ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.3-hal",
+        "android.hardware.graphics.composer@2.3-command-buffer",
+    ],
+    export_header_lib_headers: [
+        "android.hardware.graphics.composer@2.3-hal",
+        "android.hardware.graphics.composer@2.3-command-buffer",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/Composer.h b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/Composer.h
new file mode 100644
index 0000000..129bae6
--- /dev/null
+++ b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/Composer.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#ifndef LOG_TAG
+#warning "Composer.h included without LOG_TAG"
+#endif
+
+#include <android/hardware/graphics/composer/2.4/IComposer.h>
+#include <composer-hal/2.3/Composer.h>
+#include <composer-hal/2.4/ComposerClient.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace hal {
+
+namespace detail {
+
+// ComposerImpl implements V2_*::IComposer on top of V2_*::ComposerHal
+template <typename Interface, typename Hal>
+class ComposerImpl : public V2_3::hal::detail::ComposerImpl<Interface, Hal> {
+  public:
+    static std::unique_ptr<ComposerImpl> create(std::unique_ptr<Hal> hal) {
+        return std::make_unique<ComposerImpl>(std::move(hal));
+    }
+
+    explicit ComposerImpl(std::unique_ptr<Hal> hal) : BaseType2_3(std::move(hal)) {}
+
+    // IComposer 2.4 interface
+
+    Return<void> createClient_2_4(IComposer::createClient_2_4_cb hidl_cb) override {
+        std::unique_lock<std::mutex> lock(mClientMutex);
+        if (!waitForClientDestroyedLocked(lock)) {
+            hidl_cb(Error::NO_RESOURCES, nullptr);
+            return Void();
+        }
+
+        sp<ComposerClient> client = ComposerClient::create(mHal.get()).release();
+        if (!client) {
+            hidl_cb(Error::NO_RESOURCES, nullptr);
+            return Void();
+        }
+
+        auto clientDestroyed = [this]() { onClientDestroyed(); };
+        client->setOnClientDestroyed(clientDestroyed);
+
+        mClient = client;
+        hidl_cb(Error::NONE, client);
+        return Void();
+    }
+
+  private:
+    using BaseType2_3 = V2_3::hal::detail::ComposerImpl<Interface, Hal>;
+    using BaseType2_1 = V2_1::hal::detail::ComposerImpl<Interface, Hal>;
+
+    using BaseType2_1::mClient;
+    using BaseType2_1::mClientMutex;
+    using BaseType2_1::mHal;
+    using BaseType2_1::onClientDestroyed;
+    using BaseType2_1::waitForClientDestroyedLocked;
+};
+
+}  // namespace detail
+
+using Composer = detail::ComposerImpl<IComposer, ComposerHal>;
+
+}  // namespace hal
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerClient.h b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerClient.h
new file mode 100644
index 0000000..ddf209b
--- /dev/null
+++ b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerClient.h
@@ -0,0 +1,159 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#ifndef LOG_TAG
+#warning "ComposerClient.h included without LOG_TAG"
+#endif
+
+#include <android/hardware/graphics/composer/2.4/IComposerCallback.h>
+#include <android/hardware/graphics/composer/2.4/IComposerClient.h>
+#include <composer-hal/2.4/ComposerHal.h>
+#include <composer-resources/2.1/ComposerResources.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace hal {
+
+namespace detail {
+
+// ComposerClientImpl implements V2_*::IComposerClient on top of V2_*::ComposerHal
+template <typename Interface, typename Hal>
+class ComposerClientImpl : public V2_3::hal::detail::ComposerClientImpl<Interface, Hal> {
+  public:
+    ComposerClientImpl(Hal* hal) : BaseType2_3(hal) {}
+
+    ~ComposerClientImpl() override { mHal->unregisterEventCallback_2_4(); }
+
+    class HalEventCallback : public Hal::EventCallback_2_4 {
+      public:
+        HalEventCallback(const sp<IComposerCallback> callback,
+                         V2_1::hal::ComposerResources* resources)
+            : mCallback(callback), mResources(resources) {}
+
+        void onHotplug(Display display, IComposerCallback::Connection connected) override {
+            if (connected == IComposerCallback::Connection::CONNECTED) {
+                mResources->addPhysicalDisplay(display);
+            } else if (connected == IComposerCallback::Connection::DISCONNECTED) {
+                mResources->removeDisplay(display);
+            }
+
+            auto ret = mCallback->onHotplug(display, connected);
+            ALOGE_IF(!ret.isOk(), "failed to send onHotplug: %s", ret.description().c_str());
+        }
+
+        void onRefresh(Display display) override {
+            mResources->setDisplayMustValidateState(display, true);
+            auto ret = mCallback->onRefresh(display);
+            ALOGE_IF(!ret.isOk(), "failed to send onRefresh: %s", ret.description().c_str());
+        }
+
+        void onVsync(Display display, int64_t timestamp) override {
+            auto ret = mCallback->onVsync(display, timestamp);
+            ALOGE_IF(!ret.isOk(), "failed to send onVsync: %s", ret.description().c_str());
+        }
+
+        void onVsync_2_4(Display display, int64_t timestamp,
+                         VsyncPeriodNanos vsyncPeriodNanos) override {
+            auto ret = mCallback->onVsync_2_4(display, timestamp, vsyncPeriodNanos);
+            ALOGE_IF(!ret.isOk(), "failed to send onVsync_2_4: %s", ret.description().c_str());
+        }
+
+      protected:
+        const sp<IComposerCallback> mCallback;
+        V2_1::hal::ComposerResources* const mResources;
+    };
+
+    Return<void> registerCallback_2_4(const sp<IComposerCallback>& callback) override {
+        // no locking as we require this function to be called only once
+        mHalEventCallback_2_4 = std::make_unique<HalEventCallback>(callback, mResources.get());
+        mHal->registerEventCallback_2_4(mHalEventCallback_2_4.get());
+        return Void();
+    }
+
+    Return<void> getDisplayCapabilities_2_4(
+            Display display, IComposerClient::getDisplayCapabilities_2_4_cb hidl_cb) override {
+        std::vector<IComposerClient::DisplayCapability> capabilities;
+        Error error = mHal->getDisplayCapabilities_2_4(display, &capabilities);
+        hidl_cb(error, capabilities);
+        return Void();
+    }
+
+    Return<void> getDisplayConnectionType(
+            Display display, IComposerClient::getDisplayConnectionType_cb hidl_cb) override {
+        IComposerClient::DisplayConnectionType type;
+        Error error = mHal->getDisplayConnectionType(display, &type);
+        hidl_cb(error, type);
+        return Void();
+    }
+
+    Return<void> getSupportedDisplayVsyncPeriods(
+            Display display, Config config,
+            IComposerClient::getSupportedDisplayVsyncPeriods_cb hidl_cb) override {
+        std::vector<VsyncPeriodNanos> supportedVsyncPeriods;
+        Error error =
+                mHal->getSupportedDisplayVsyncPeriods(display, config, &supportedVsyncPeriods);
+        hidl_cb(error, supportedVsyncPeriods);
+        return Void();
+    }
+
+    Return<void> getDisplayVsyncPeriod(Display display,
+                                       IComposerClient::getDisplayVsyncPeriod_cb hidl_cb) override {
+        VsyncPeriodNanos vsyncPeriods;
+        Error error = mHal->getDisplayVsyncPeriod(display, &vsyncPeriods);
+        hidl_cb(error, vsyncPeriods);
+        return Void();
+    }
+
+    Return<void> setActiveConfigAndVsyncPeriod(
+            Display display, Config config, VsyncPeriodNanos vsyncPeriodNanos,
+            const IComposerClient::VsyncPeriodChangeConstraints& vsyncPeriodChangeConstraints,
+            IComposerClient::setActiveConfigAndVsyncPeriod_cb hidl_cb) override {
+        int64_t newVsyncAppliedTime = 0;
+        Error error = mHal->setActiveConfigAndVsyncPeriod(display, config, vsyncPeriodNanos,
+                                                          vsyncPeriodChangeConstraints,
+                                                          &newVsyncAppliedTime);
+        hidl_cb(error, newVsyncAppliedTime);
+        return Void();
+    }
+
+    static std::unique_ptr<ComposerClientImpl> create(Hal* hal) {
+        auto client = std::make_unique<ComposerClientImpl>(hal);
+        return client->init() ? std::move(client) : nullptr;
+    }
+
+  private:
+    using BaseType2_3 = V2_3::hal::detail::ComposerClientImpl<Interface, Hal>;
+    using BaseType2_1 = V2_1::hal::detail::ComposerClientImpl<Interface, Hal>;
+    using BaseType2_1::mHal;
+    std::unique_ptr<HalEventCallback> mHalEventCallback_2_4;
+    using BaseType2_1::mResources;
+};
+
+}  // namespace detail
+
+using ComposerClient = detail::ComposerClientImpl<IComposerClient, ComposerHal>;
+
+}  // namespace hal
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerHal.h b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerHal.h
new file mode 100644
index 0000000..0739f62
--- /dev/null
+++ b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerHal.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/graphics/composer/2.4/types.h>
+#include <composer-hal/2.3/ComposerHal.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace hal {
+
+using common::V1_1::RenderIntent;
+using common::V1_2::ColorMode;
+using common::V1_2::Dataspace;
+using common::V1_2::Hdr;
+using common::V1_2::PixelFormat;
+using V2_1::Config;
+using V2_1::Display;
+using V2_1::Layer;
+using V2_4::Error;
+using V2_4::VsyncPeriodNanos;
+
+class ComposerHal : public V2_3::hal::ComposerHal {
+  public:
+    class EventCallback_2_4 {
+      public:
+        virtual ~EventCallback_2_4() = default;
+        virtual void onHotplug(Display display, IComposerCallback::Connection connected) = 0;
+        virtual void onRefresh(Display display) = 0;
+        virtual void onVsync(Display display, int64_t timestamp) = 0;
+        virtual void onVsync_2_4(Display display, int64_t timestamp,
+                                 VsyncPeriodNanos vsyncPeriodNanos) = 0;
+    };
+
+    virtual void registerEventCallback_2_4(EventCallback_2_4* callback) = 0;
+
+    virtual void unregisterEventCallback_2_4() = 0;
+
+    virtual Error getDisplayCapabilities_2_4(
+            Display display, std::vector<IComposerClient::DisplayCapability>* outCapabilities) = 0;
+    virtual Error getDisplayConnectionType(Display display,
+                                           IComposerClient::DisplayConnectionType* outType) = 0;
+    virtual Error getSupportedDisplayVsyncPeriods(
+            Display display, Config config, std::vector<VsyncPeriodNanos>* outVsyncPeriod) = 0;
+    virtual Error getDisplayVsyncPeriod(Display display, VsyncPeriodNanos* outVsyncPeriod) = 0;
+    virtual Error setActiveConfigAndVsyncPeriod(
+            Display display, Config config, VsyncPeriodNanos vsyncPeriodNanos,
+            const IComposerClient::VsyncPeriodChangeConstraints& vsyncPeriodChangeConstraints,
+            int64_t* outNewVsyncAppliedTime) = 0;
+};
+
+}  // namespace hal
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/utils/passthrough/Android.bp b/graphics/composer/2.4/utils/passthrough/Android.bp
new file mode 100644
index 0000000..43d9aaa
--- /dev/null
+++ b/graphics/composer/2.4/utils/passthrough/Android.bp
@@ -0,0 +1,30 @@
+//
+// Copyright 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_headers {
+    name: "android.hardware.graphics.composer@2.4-passthrough",
+    defaults: ["hidl_defaults"],
+    vendor: true,
+    header_libs: [
+        "android.hardware.graphics.composer@2.3-passthrough",
+        "android.hardware.graphics.composer@2.4-hal",
+    ],
+    export_header_lib_headers: [
+        "android.hardware.graphics.composer@2.3-passthrough",
+        "android.hardware.graphics.composer@2.4-hal",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/graphics/composer/2.4/utils/passthrough/include/composer-passthrough/2.4/HwcHal.h b/graphics/composer/2.4/utils/passthrough/include/composer-passthrough/2.4/HwcHal.h
new file mode 100644
index 0000000..3420c8c
--- /dev/null
+++ b/graphics/composer/2.4/utils/passthrough/include/composer-passthrough/2.4/HwcHal.h
@@ -0,0 +1,233 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#ifndef LOG_TAG
+#warning "HwcHal.h included without LOG_TAG"
+#endif
+
+#include <type_traits>
+
+#include <android/hardware/graphics/composer/2.4/IComposerClient.h>
+#include <composer-hal/2.4/ComposerHal.h>
+#include <composer-passthrough/2.3/HwcHal.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace passthrough {
+
+namespace detail {
+
+using common::V1_1::RenderIntent;
+using common::V1_2::ColorMode;
+using common::V1_2::Dataspace;
+using common::V1_2::Hdr;
+using common::V1_2::PixelFormat;
+using V2_1::Config;
+using V2_1::Display;
+using V2_4::Error;
+
+// HwcHalImpl implements V2_*::hal::ComposerHal on top of hwcomposer2
+template <typename Hal>
+class HwcHalImpl : public V2_3::passthrough::detail::HwcHalImpl<Hal> {
+  public:
+    void registerEventCallback_2_4(hal::ComposerHal::EventCallback_2_4* callback) override {
+        mEventCallback_2_4 = callback;
+
+        mDispatch.registerCallback(mDevice, HWC2_CALLBACK_HOTPLUG, this,
+                                   reinterpret_cast<hwc2_function_pointer_t>(hotplugHook));
+        mDispatch.registerCallback(mDevice, HWC2_CALLBACK_REFRESH, this,
+                                   reinterpret_cast<hwc2_function_pointer_t>(refreshHook));
+        mDispatch.registerCallback(mDevice, HWC2_CALLBACK_VSYNC, this,
+                                   reinterpret_cast<hwc2_function_pointer_t>(vsyncHook));
+        mDispatch.registerCallback(mDevice, HWC2_CALLBACK_VSYNC_2_4, this,
+                                   reinterpret_cast<hwc2_function_pointer_t>(vsync_2_4_Hook));
+    }
+
+    void unregisterEventCallback_2_4() override {
+        // we assume the callback functions
+        //
+        //  - can be unregistered
+        //  - can be in-flight
+        //  - will never be called afterward
+        //
+        // which is likely incorrect
+        mDispatch.registerCallback(mDevice, HWC2_CALLBACK_HOTPLUG, this, nullptr);
+        mDispatch.registerCallback(mDevice, HWC2_CALLBACK_REFRESH, this, nullptr);
+        mDispatch.registerCallback(mDevice, HWC2_CALLBACK_VSYNC, this, nullptr);
+        mDispatch.registerCallback(mDevice, HWC2_CALLBACK_VSYNC_2_4, this, nullptr);
+
+        mEventCallback_2_4 = nullptr;
+    }
+
+    Error getDisplayCapabilities_2_4(
+            Display display,
+            std::vector<IComposerClient::DisplayCapability>* outCapabilities) override {
+        std::vector<V2_3::IComposerClient::DisplayCapability> capabilities;
+        V2_3::Error error_2_3 = BaseType2_3::getDisplayCapabilities(display, &capabilities);
+        Error error = static_cast<Error>(error_2_3);
+        if (error != Error::NONE) {
+            return error;
+        }
+        outCapabilities->clear();
+        outCapabilities->reserve(capabilities.size());
+        for (auto capability : capabilities) {
+            outCapabilities->push_back(static_cast<IComposerClient::DisplayCapability>(capability));
+        }
+        return Error::NONE;
+    }
+
+    Error getDisplayConnectionType(Display display,
+                                   IComposerClient::DisplayConnectionType* outType) override {
+        if (!mDispatch.getDisplayConnectionType) {
+            return Error::UNSUPPORTED;
+        }
+
+        uint32_t type = HWC2_DISPLAY_CONNECTION_TYPE_INTERNAL;
+        int32_t error = mDispatch.getDisplayConnectionType(mDevice, display, &type);
+        *outType = static_cast<IComposerClient::DisplayConnectionType>(type);
+        return static_cast<Error>(error);
+    }
+
+    Error getSupportedDisplayVsyncPeriods(Display display, Config config,
+                                          std::vector<VsyncPeriodNanos>* outVsyncPeriods) override {
+        if (!mDispatch.getSupportedDisplayVsyncPeriods) {
+            return Error::UNSUPPORTED;
+        }
+
+        uint32_t count = 0;
+        int32_t error = mDispatch.getSupportedDisplayVsyncPeriods(mDevice, display, config, &count,
+                                                                  nullptr);
+        if (error != HWC2_ERROR_NONE) {
+            return static_cast<Error>(error);
+        }
+        outVsyncPeriods->resize(count);
+        error = mDispatch.getSupportedDisplayVsyncPeriods(mDevice, display, config, &count,
+                                                          outVsyncPeriods->data());
+        if (error != HWC2_ERROR_NONE) {
+            *outVsyncPeriods = std::vector<VsyncPeriodNanos>();
+            return static_cast<Error>(error);
+        }
+        return Error::NONE;
+    }
+
+    Error getDisplayVsyncPeriod(Display display, VsyncPeriodNanos* outVsyncPeriod) override {
+        if (!mDispatch.getDisplayVsyncPeriod) {
+            return Error::UNSUPPORTED;
+        }
+
+        int32_t error = mDispatch.getDisplayVsyncPeriod(mDevice, display, outVsyncPeriod);
+        if (error != HWC2_ERROR_NONE) {
+            return static_cast<Error>(error);
+        }
+        return Error::NONE;
+    }
+
+    Error setActiveConfigAndVsyncPeriod(
+            Display display, Config config, VsyncPeriodNanos vsyncPeriodNanos,
+            const IComposerClient::VsyncPeriodChangeConstraints& vsyncPeriodChangeConstraints,
+            int64_t* outNewVsyncAppliedTime) override {
+        if (!mDispatch.setActiveConfigAndVsyncPeriod) {
+            return Error::UNSUPPORTED;
+        }
+
+        hwc_vsync_period_change_constraints_t vsync_period_change_constraints;
+        vsync_period_change_constraints.desiredTimeNanos =
+                vsyncPeriodChangeConstraints.desiredTimeNanos;
+        vsync_period_change_constraints.seamlessRequired =
+                vsyncPeriodChangeConstraints.seamlessRequired;
+
+        int32_t error = mDispatch.setActiveConfigAndVsyncPeriod(
+                mDevice, display, config, vsyncPeriodNanos, &vsync_period_change_constraints,
+                outNewVsyncAppliedTime);
+        if (error != HWC2_ERROR_NONE) {
+            return static_cast<Error>(error);
+        }
+        return Error::NONE;
+    }
+
+  protected:
+    bool initDispatch() override {
+        if (!BaseType2_3::initDispatch()) {
+            return false;
+        }
+
+        this->initOptionalDispatch(HWC2_FUNCTION_GET_DISPLAY_CONNECTION_TYPE,
+                                   &mDispatch.getDisplayConnectionType);
+        this->initOptionalDispatch(HWC2_FUNCTION_REGISTER_CALLBACK, &mDispatch.registerCallback);
+        this->initOptionalDispatch(HWC2_FUNCTION_GET_SUPPORTED_DISPLAY_VSYNC_PERIODS,
+                                   &mDispatch.getSupportedDisplayVsyncPeriods);
+        this->initOptionalDispatch(HWC2_FUNCTION_GET_DISPLAY_VSYNC_PERIOD,
+                                   &mDispatch.getDisplayVsyncPeriod);
+        this->initOptionalDispatch(HWC2_FUNCTION_SET_ACTIVE_CONFIG_AND_VSYNC_PERIOD,
+                                   &mDispatch.setActiveConfigAndVsyncPeriod);
+        return true;
+    }
+
+    static void hotplugHook(hwc2_callback_data_t callbackData, hwc2_display_t display,
+                            int32_t connected) {
+        auto hal = static_cast<HwcHalImpl*>(callbackData);
+        hal->mEventCallback_2_4->onHotplug(display,
+                                           static_cast<IComposerCallback::Connection>(connected));
+    }
+
+    static void refreshHook(hwc2_callback_data_t callbackData, hwc2_display_t display) {
+        auto hal = static_cast<HwcHalImpl*>(callbackData);
+        hal->mEventCallback_2_4->onRefresh(display);
+    }
+
+    static void vsyncHook(hwc2_callback_data_t callbackData, hwc2_display_t display,
+                          int64_t timestamp) {
+        auto hal = static_cast<HwcHalImpl*>(callbackData);
+        hal->mEventCallback_2_4->onVsync(display, timestamp);
+    }
+
+    static void vsync_2_4_Hook(hwc2_callback_data_t callbackData, hwc2_display_t display,
+                               int64_t timestamp, hwc2_vsync_period_t vsyncPeriodNanos) {
+        auto hal = static_cast<HwcHalImpl*>(callbackData);
+        hal->mEventCallback_2_4->onVsync_2_4(display, timestamp, vsyncPeriodNanos);
+    }
+
+  private:
+    struct {
+        HWC2_PFN_GET_DISPLAY_CONNECTION_TYPE getDisplayConnectionType;
+        HWC2_PFN_REGISTER_CALLBACK registerCallback;
+        HWC2_PFN_GET_SUPPORTED_DISPLAY_VSYNC_PERIODS getSupportedDisplayVsyncPeriods;
+        HWC2_PFN_GET_DISPLAY_VSYNC_PERIOD getDisplayVsyncPeriod;
+        HWC2_PFN_SET_ACTIVE_CONFIG_AND_VSYNC_PERIOD setActiveConfigAndVsyncPeriod;
+    } mDispatch = {};
+
+    hal::ComposerHal::EventCallback_2_4* mEventCallback_2_4 = nullptr;
+
+    using BaseType2_1 = V2_1::passthrough::detail::HwcHalImpl<Hal>;
+    using BaseType2_3 = V2_3::passthrough::detail::HwcHalImpl<Hal>;
+    using BaseType2_1::mDevice;
+};
+
+}  // namespace detail
+
+using HwcHal = detail::HwcHalImpl<hal::ComposerHal>;
+
+}  // namespace passthrough
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/utils/passthrough/include/composer-passthrough/2.4/HwcLoader.h b/graphics/composer/2.4/utils/passthrough/include/composer-passthrough/2.4/HwcLoader.h
new file mode 100644
index 0000000..a7cc588
--- /dev/null
+++ b/graphics/composer/2.4/utils/passthrough/include/composer-passthrough/2.4/HwcLoader.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#ifndef LOG_TAG
+#warning "HwcLoader.h included without LOG_TAG"
+#endif
+
+#include <composer-hal/2.4/Composer.h>
+#include <composer-hal/2.4/ComposerHal.h>
+#include <composer-passthrough/2.3/HwcLoader.h>
+#include <composer-passthrough/2.4/HwcHal.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace passthrough {
+
+class HwcLoader : public V2_3::passthrough::HwcLoader {
+  public:
+    static IComposer* load() {
+        const hw_module_t* module = loadModule();
+        if (!module) {
+            return nullptr;
+        }
+
+        auto hal = createHalWithAdapter(module);
+        if (!hal) {
+            return nullptr;
+        }
+
+        return createComposer(std::move(hal)).release();
+    }
+
+    // create a ComposerHal instance
+    static std::unique_ptr<hal::ComposerHal> createHal(const hw_module_t* module) {
+        auto hal = std::make_unique<HwcHal>();
+        return hal->initWithModule(module) ? std::move(hal) : nullptr;
+    }
+
+    // create a ComposerHal instance, insert an adapter if necessary
+    static std::unique_ptr<hal::ComposerHal> createHalWithAdapter(const hw_module_t* module) {
+        bool adapted;
+        hwc2_device_t* device = openDeviceWithAdapter(module, &adapted);
+        if (!device) {
+            return nullptr;
+        }
+        auto hal = std::make_unique<HwcHal>();
+        return hal->initWithDevice(std::move(device), !adapted) ? std::move(hal) : nullptr;
+    }
+
+    // create an IComposer instance
+    static std::unique_ptr<IComposer> createComposer(std::unique_ptr<hal::ComposerHal> hal) {
+        return hal::Composer::create(std::move(hal));
+    }
+};
+
+}  // namespace passthrough
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/utils/vts/Android.bp b/graphics/composer/2.4/utils/vts/Android.bp
new file mode 100644
index 0000000..b87a116
--- /dev/null
+++ b/graphics/composer/2.4/utils/vts/Android.bp
@@ -0,0 +1,42 @@
+//
+// Copyright 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_static {
+    name: "android.hardware.graphics.composer@2.4-vts",
+    defaults: ["hidl_defaults"],
+    srcs: [
+        "ComposerVts.cpp",
+    ],
+    static_libs: [
+        "VtsHalHidlTargetTestBase",
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.3-vts",
+        "android.hardware.graphics.composer@2.3",
+        "android.hardware.graphics.composer@2.4",
+    ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+        "android.hardware.graphics.composer@2.2-command-buffer",
+        "android.hardware.graphics.composer@2.3-command-buffer",
+    ],
+    cflags: [
+        "-O0",
+        "-g",
+        "-DLOG_TAG=\"ComposerVts\"",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/graphics/composer/2.4/utils/vts/ComposerVts.cpp b/graphics/composer/2.4/utils/vts/ComposerVts.cpp
new file mode 100644
index 0000000..b02a59a
--- /dev/null
+++ b/graphics/composer/2.4/utils/vts/ComposerVts.cpp
@@ -0,0 +1,112 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <composer-vts/2.4/ComposerVts.h>
+
+#include <VtsHalHidlTargetTestBase.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace vts {
+
+using V2_4::Error;
+
+Composer::Composer() : Composer(::testing::VtsHalHidlTargetTestBase::getService<IComposer>()) {}
+
+Composer::Composer(const std::string& name)
+    : Composer(::testing::VtsHalHidlTargetTestBase::getService<IComposer>(name)) {}
+
+Composer::Composer(const sp<IComposer>& composer)
+    : V2_3::vts::Composer(composer), mComposer(composer) {}
+
+std::unique_ptr<ComposerClient> Composer::createClient() {
+    std::unique_ptr<ComposerClient> client;
+    mComposer->createClient_2_4([&client](const auto& tmpError, const auto& tmpClient) {
+        ASSERT_EQ(Error::NONE, tmpError) << "failed to create client";
+        client = std::make_unique<ComposerClient>(tmpClient);
+    });
+
+    return client;
+}
+
+sp<IComposerClient> ComposerClient::getRaw() const {
+    return mClient;
+}
+
+Error ComposerClient::getDisplayCapabilities(
+        Display display, std::vector<IComposerClient::DisplayCapability>* outCapabilities) {
+    Error error = Error::NONE;
+    mClient->getDisplayCapabilities_2_4(display,
+                                        [&](const auto& tmpError, const auto& tmpCapabilities) {
+                                            error = tmpError;
+                                            *outCapabilities = tmpCapabilities;
+                                        });
+    return error;
+}
+
+Error ComposerClient::getDisplayConnectionType(Display display,
+                                               IComposerClient::DisplayConnectionType* outType) {
+    Error error = Error::NONE;
+    mClient->getDisplayConnectionType(display, [&](const auto& tmpError, const auto& tmpType) {
+        error = tmpError;
+        *outType = tmpType;
+    });
+    return error;
+}
+
+Error ComposerClient::getSupportedDisplayVsyncPeriods(
+        Display display, Config config, std::vector<VsyncPeriodNanos>* outSupportedVsyncPeriods) {
+    Error error = Error::NONE;
+    mClient->getSupportedDisplayVsyncPeriods(
+            display, config, [&](const auto& tmpError, const auto& tmpSupportedVsyncPeriods) {
+                error = tmpError;
+                *outSupportedVsyncPeriods = tmpSupportedVsyncPeriods;
+            });
+    return error;
+}
+
+Error ComposerClient::getDisplayVsyncPeriod(Display display, VsyncPeriodNanos* outVsyncPeriod) {
+    Error error = Error::NONE;
+    mClient->getDisplayVsyncPeriod(display, [&](const auto& tmpError, const auto& tmpVsyncPeriod) {
+        error = tmpError;
+        *outVsyncPeriod = tmpVsyncPeriod;
+    });
+    return error;
+}
+
+Error ComposerClient::setActiveConfigAndVsyncPeriod(
+        Display display, Config config, VsyncPeriodNanos vsyncPeriodNanos,
+        const IComposerClient::VsyncPeriodChangeConstraints& vsyncPeriodChangeConstraints,
+        int64_t* outNewVsyncAppliedTime) {
+    Error error = Error::NONE;
+    mClient->setActiveConfigAndVsyncPeriod(
+            display, config, vsyncPeriodNanos, vsyncPeriodChangeConstraints,
+            [&](const auto& tmpError, const auto& tmpNewVsyncAppliedTime) {
+                error = tmpError;
+                *outNewVsyncAppliedTime = tmpNewVsyncAppliedTime;
+            });
+    return error;
+}
+
+}  // namespace vts
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/utils/vts/include/composer-vts/2.4/ComposerVts.h b/graphics/composer/2.4/utils/vts/include/composer-vts/2.4/ComposerVts.h
new file mode 100644
index 0000000..5db3e16
--- /dev/null
+++ b/graphics/composer/2.4/utils/vts/include/composer-vts/2.4/ComposerVts.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <memory>
+#include <vector>
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android/hardware/graphics/composer/2.4/IComposer.h>
+#include <android/hardware/graphics/composer/2.4/IComposerClient.h>
+#include <composer-vts/2.3/ComposerVts.h>
+#include <utils/StrongPointer.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace vts {
+
+using common::V1_1::RenderIntent;
+using common::V1_2::ColorMode;
+using common::V1_2::Dataspace;
+using common::V1_2::Hdr;
+using common::V1_2::PixelFormat;
+using V2_1::Config;
+using V2_1::Display;
+using V2_4::Error;
+using V2_4::IComposer;
+using V2_4::IComposerClient;
+using V2_4::VsyncPeriodNanos;
+
+class ComposerClient;
+
+// A wrapper to IComposer.
+class Composer : public V2_3::vts::Composer {
+  public:
+    Composer();
+    explicit Composer(const std::string& name);
+    explicit Composer(const sp<IComposer>& composer);
+
+    std::unique_ptr<ComposerClient> createClient();
+
+  private:
+    const sp<IComposer> mComposer;
+};
+
+// A wrapper to IComposerClient.
+class ComposerClient : public V2_3::vts::ComposerClient {
+  public:
+    explicit ComposerClient(const sp<IComposerClient>& client)
+        : V2_3::vts::ComposerClient(client), mClient(client) {}
+
+    sp<IComposerClient> getRaw() const;
+
+    Error getDisplayCapabilities(
+            Display display,
+            std::vector<IComposerClient::DisplayCapability>* outDisplayCapabilities);
+
+    Error getDisplayConnectionType(Display display,
+                                   IComposerClient::DisplayConnectionType* outType);
+
+    Error getSupportedDisplayVsyncPeriods(Display display, Config config,
+                                          std::vector<VsyncPeriodNanos>* outSupportedVsyncPeriods);
+
+    Error getDisplayVsyncPeriod(Display display, VsyncPeriodNanos* outVsyncPeriods);
+
+    Error setActiveConfigAndVsyncPeriod(
+            Display display, Config config, VsyncPeriodNanos vsyncPeriodNanos,
+            const IComposerClient::VsyncPeriodChangeConstraints& vsyncPeriodChangeConstraints,
+            int64_t* outNewVsyncAppliedTime);
+
+  private:
+    const sp<IComposerClient> mClient;
+};
+
+}  // namespace vts
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/vts/functional/Android.bp b/graphics/composer/2.4/vts/functional/Android.bp
new file mode 100644
index 0000000..937af3d
--- /dev/null
+++ b/graphics/composer/2.4/vts/functional/Android.bp
@@ -0,0 +1,56 @@
+//
+// Copyright 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_test {
+    name: "VtsHalGraphicsComposerV2_4TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: ["VtsHalGraphicsComposerV2_4TargetTest.cpp"],
+
+    // TODO(b/64437680): Assume these libs are always available on the device.
+    shared_libs: [
+        "libfmq",
+        "libsync",
+    ],
+    static_libs: [
+        "android.hardware.graphics.allocator@2.0",
+        "android.hardware.graphics.allocator@3.0",
+        "android.hardware.graphics.allocator@4.0",
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.composer@2.1-vts",
+        "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.2-vts",
+        "android.hardware.graphics.composer@2.3",
+        "android.hardware.graphics.composer@2.3-vts",
+        "android.hardware.graphics.composer@2.4",
+        "android.hardware.graphics.composer@2.4-vts",
+        "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@2.0-vts",
+        "android.hardware.graphics.mapper@2.1",
+        "android.hardware.graphics.mapper@2.1-vts",
+        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@3.0-vts",
+        "android.hardware.graphics.mapper@4.0",
+        "android.hardware.graphics.mapper@4.0-vts",
+    ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+        "android.hardware.graphics.composer@2.2-command-buffer",
+        "android.hardware.graphics.composer@2.3-command-buffer",
+        "android.hardware.graphics.composer@2.4-command-buffer",
+    ],
+    disable_framework: true,
+    test_suites: ["general-tests", "vts-core"],
+}
diff --git a/graphics/composer/2.4/vts/functional/OWNERS b/graphics/composer/2.4/vts/functional/OWNERS
new file mode 100644
index 0000000..b3ea6be
--- /dev/null
+++ b/graphics/composer/2.4/vts/functional/OWNERS
@@ -0,0 +1,8 @@
+# Graphics team
+lpy@google.com
+stoza@google.com
+vhau@google.com
+
+# VTS team
+yim@google.com
+zhuoyao@google.com
diff --git a/graphics/composer/2.4/vts/functional/VtsHalGraphicsComposerV2_4TargetTest.cpp b/graphics/composer/2.4/vts/functional/VtsHalGraphicsComposerV2_4TargetTest.cpp
new file mode 100644
index 0000000..2c87666
--- /dev/null
+++ b/graphics/composer/2.4/vts/functional/VtsHalGraphicsComposerV2_4TargetTest.cpp
@@ -0,0 +1,364 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "graphics_composer_hidl_hal_test@2.4"
+
+#include <algorithm>
+#include <thread>
+
+#include <android-base/logging.h>
+#include <android/hardware/graphics/mapper/2.0/IMapper.h>
+#include <composer-command-buffer/2.4/ComposerCommandBuffer.h>
+#include <composer-vts/2.1/GraphicsComposerCallback.h>
+#include <composer-vts/2.1/TestCommandReader.h>
+#include <composer-vts/2.4/ComposerVts.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+#include <mapper-vts/2.0/MapperVts.h>
+#include <utils/Timers.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace vts {
+namespace {
+
+using common::V1_0::BufferUsage;
+using common::V1_1::RenderIntent;
+using common::V1_2::ColorMode;
+using common::V1_2::Dataspace;
+using common::V1_2::PixelFormat;
+using mapper::V2_0::IMapper;
+using mapper::V2_0::vts::Gralloc;
+
+class GraphicsComposerHidlTest : public ::testing::TestWithParam<std::string> {
+  protected:
+    void SetUp() override {
+        ASSERT_NO_FATAL_FAILURE(
+                mComposer = std::make_unique<Composer>(IComposer::getService(GetParam())));
+        ASSERT_NO_FATAL_FAILURE(mComposerClient = mComposer->createClient());
+
+        mComposerCallback = new V2_1::vts::GraphicsComposerCallback;
+        mComposerClient->registerCallback(mComposerCallback);
+
+        // assume the first display is primary and is never removed
+        mPrimaryDisplay = waitForFirstDisplay();
+
+        mInvalidDisplayId = GetInvalidDisplayId();
+
+        // explicitly disable vsync
+        mComposerClient->setVsyncEnabled(mPrimaryDisplay, false);
+        mComposerCallback->setVsyncAllowed(false);
+
+        mWriter = std::make_unique<CommandWriterBase>(1024);
+        mReader = std::make_unique<V2_1::vts::TestCommandReader>();
+    }
+
+    void TearDown() override {
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_EQ(0, mReader->mCompositionChanges.size());
+        if (mComposerCallback != nullptr) {
+            EXPECT_EQ(0, mComposerCallback->getInvalidHotplugCount());
+            EXPECT_EQ(0, mComposerCallback->getInvalidRefreshCount());
+            EXPECT_EQ(0, mComposerCallback->getInvalidVsyncCount());
+        }
+    }
+
+    // returns an invalid display id (one that has not been registered to a
+    // display.  Currently assuming that a device will never have close to
+    // std::numeric_limit<uint64_t>::max() displays registered while running tests
+    Display GetInvalidDisplayId() {
+        std::vector<Display> validDisplays = mComposerCallback->getDisplays();
+        uint64_t id = std::numeric_limits<uint64_t>::max();
+        while (id > 0) {
+            if (std::find(validDisplays.begin(), validDisplays.end(), id) == validDisplays.end()) {
+                return id;
+            }
+            id--;
+        }
+
+        return 0;
+    }
+
+    // returns an invalid config id (one that has not been registered to a
+    // display).  Currently assuming that a device will never have close to
+    // std::numeric_limit<uint64_t>::max() configs registered while running tests
+    Display GetInvalidConfigId(Display display) {
+        std::vector<Config> validConfigs = mComposerClient->getDisplayConfigs(display);
+        uint64_t id = std::numeric_limits<uint64_t>::max();
+        while (id > 0) {
+            if (std::find(validConfigs.begin(), validConfigs.end(), id) == validConfigs.end()) {
+                return id;
+            }
+            id--;
+        }
+
+        return 0;
+    }
+
+    void execute() { mComposerClient->execute(mReader.get(), mWriter.get()); }
+
+    void Test_setActiveConfigAndVsyncPeriod(
+            const IComposerClient::VsyncPeriodChangeConstraints& constraints);
+
+    std::unique_ptr<Composer> mComposer;
+    std::unique_ptr<ComposerClient> mComposerClient;
+    sp<V2_1::vts::GraphicsComposerCallback> mComposerCallback;
+    // the first display and is assumed never to be removed
+    Display mPrimaryDisplay;
+    Display mInvalidDisplayId;
+    std::unique_ptr<CommandWriterBase> mWriter;
+    std::unique_ptr<V2_1::vts::TestCommandReader> mReader;
+
+  private:
+    Display waitForFirstDisplay() {
+        while (true) {
+            std::vector<Display> displays = mComposerCallback->getDisplays();
+            if (displays.empty()) {
+                usleep(5 * 1000);
+                continue;
+            }
+
+            return displays[0];
+        }
+    }
+};
+
+// Tests for IComposerClient::Command.
+class GraphicsComposerHidlCommandTest : public GraphicsComposerHidlTest {
+  protected:
+    void SetUp() override {
+        ASSERT_NO_FATAL_FAILURE(GraphicsComposerHidlTest::SetUp());
+
+        ASSERT_NO_FATAL_FAILURE(mGralloc = std::make_unique<Gralloc>());
+
+        mWriter = std::make_unique<CommandWriterBase>(1024);
+        mReader = std::make_unique<V2_1::vts::TestCommandReader>();
+    }
+
+    void TearDown() override {
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_NO_FATAL_FAILURE(GraphicsComposerHidlTest::TearDown());
+    }
+
+    const native_handle_t* allocate() {
+        IMapper::BufferDescriptorInfo info{};
+        info.width = 64;
+        info.height = 64;
+        info.layerCount = 1;
+        info.format = static_cast<common::V1_0::PixelFormat>(PixelFormat::RGBA_8888);
+        info.usage =
+                static_cast<uint64_t>(BufferUsage::CPU_WRITE_OFTEN | BufferUsage::CPU_READ_OFTEN);
+
+        return mGralloc->allocate(info);
+    }
+
+    void execute() { mComposerClient->execute(mReader.get(), mWriter.get()); }
+
+    std::unique_ptr<CommandWriterBase> mWriter;
+    std::unique_ptr<V2_1::vts::TestCommandReader> mReader;
+
+  private:
+    std::unique_ptr<Gralloc> mGralloc;
+};
+
+TEST_P(GraphicsComposerHidlTest, getDisplayCapabilitiesBadDisplay) {
+    std::vector<IComposerClient::DisplayCapability> capabilities;
+    const auto error = mComposerClient->getDisplayCapabilities(mInvalidDisplayId, &capabilities);
+    EXPECT_EQ(Error::BAD_DISPLAY, error);
+}
+
+TEST_P(GraphicsComposerHidlTest, getDisplayConnectionType) {
+    IComposerClient::DisplayConnectionType type;
+    EXPECT_EQ(Error::BAD_DISPLAY,
+              mComposerClient->getDisplayConnectionType(mInvalidDisplayId, &type));
+
+    for (Display display : mComposerCallback->getDisplays()) {
+        EXPECT_EQ(Error::NONE, mComposerClient->getDisplayConnectionType(display, &type));
+    }
+}
+
+TEST_P(GraphicsComposerHidlTest, getSupportedDisplayVsyncPeriods_BadDisplay) {
+    std::vector<VsyncPeriodNanos> supportedVsyncPeriods;
+    EXPECT_EQ(Error::BAD_DISPLAY, mComposerClient->getSupportedDisplayVsyncPeriods(
+                                          mInvalidDisplayId, Config(0), &supportedVsyncPeriods));
+}
+
+TEST_P(GraphicsComposerHidlTest, getSupportedDisplayVsyncPeriods_BadConfig) {
+    for (Display display : mComposerCallback->getDisplays()) {
+        Config invalidConfigId = GetInvalidConfigId(display);
+        std::vector<VsyncPeriodNanos> supportedVsyncPeriods;
+        EXPECT_EQ(Error::BAD_CONFIG, mComposerClient->getSupportedDisplayVsyncPeriods(
+                                             display, invalidConfigId, &supportedVsyncPeriods));
+    }
+}
+
+TEST_P(GraphicsComposerHidlTest, getSupportedDisplayVsyncPeriods) {
+    for (Display display : mComposerCallback->getDisplays()) {
+        for (Config config : mComposerClient->getDisplayConfigs(display)) {
+            std::vector<VsyncPeriodNanos> supportedVsyncPeriods;
+
+            // Get the default vsync period from the config
+            VsyncPeriodNanos defaultVsyncPeiord = mComposerClient->getDisplayAttribute(
+                    display, config, IComposerClient::Attribute::VSYNC_PERIOD);
+            // Get all supported vsync periods for this config
+            EXPECT_EQ(Error::NONE, mComposerClient->getSupportedDisplayVsyncPeriods(
+                                           display, config, &supportedVsyncPeriods));
+            // Default vsync period must be present in the list
+            EXPECT_NE(std::find(supportedVsyncPeriods.begin(), supportedVsyncPeriods.end(),
+                                defaultVsyncPeiord),
+                      supportedVsyncPeriods.end());
+
+            // Each vsync period must be unique
+            std::unordered_set<VsyncPeriodNanos> vsyncPeriodSet;
+            for (VsyncPeriodNanos vsyncPeriodNanos : supportedVsyncPeriods) {
+                EXPECT_TRUE(vsyncPeriodSet.insert(vsyncPeriodNanos).second);
+            }
+        }
+    }
+}
+
+TEST_P(GraphicsComposerHidlTest, getDisplayVsyncPeriod_BadDisplay) {
+    VsyncPeriodNanos vsyncPeriodNanos;
+    EXPECT_EQ(Error::BAD_DISPLAY,
+              mComposerClient->getDisplayVsyncPeriod(mInvalidDisplayId, &vsyncPeriodNanos));
+}
+
+TEST_P(GraphicsComposerHidlTest, setActiveConfigAndVsyncPeriod_BadDisplay) {
+    int64_t newVsyncAppliedTime;
+    IComposerClient::VsyncPeriodChangeConstraints constraints;
+
+    constraints.seamlessRequired = false;
+    constraints.desiredTimeNanos = systemTime();
+
+    EXPECT_EQ(Error::BAD_DISPLAY, mComposerClient->setActiveConfigAndVsyncPeriod(
+                                          mInvalidDisplayId, Config(0), VsyncPeriodNanos(0),
+                                          constraints, &newVsyncAppliedTime));
+}
+
+TEST_P(GraphicsComposerHidlTest, setActiveConfigAndVsyncPeriod_BadConfig) {
+    int64_t newVsyncAppliedTime;
+    IComposerClient::VsyncPeriodChangeConstraints constraints;
+
+    constraints.seamlessRequired = false;
+    constraints.desiredTimeNanos = systemTime();
+
+    for (Display display : mComposerCallback->getDisplays()) {
+        Config invalidConfigId = GetInvalidConfigId(display);
+        EXPECT_EQ(Error::BAD_CONFIG, mComposerClient->setActiveConfigAndVsyncPeriod(
+                                             display, invalidConfigId, VsyncPeriodNanos(0),
+                                             constraints, &newVsyncAppliedTime));
+    }
+}
+
+TEST_P(GraphicsComposerHidlTest, setActiveConfigAndVsyncPeriod_BadVsyncPeriod) {
+    int64_t newVsyncAppliedTime;
+    IComposerClient::VsyncPeriodChangeConstraints constraints;
+
+    constraints.seamlessRequired = false;
+    constraints.desiredTimeNanos = systemTime();
+
+    for (Display display : mComposerCallback->getDisplays()) {
+        for (Config config : mComposerClient->getDisplayConfigs(display)) {
+            EXPECT_EQ(Error::BAD_VSYNC_PERIOD, mComposerClient->setActiveConfigAndVsyncPeriod(
+                                                       display, config, VsyncPeriodNanos(0),
+                                                       constraints, &newVsyncAppliedTime));
+        }
+    }
+}
+
+void GraphicsComposerHidlTest::Test_setActiveConfigAndVsyncPeriod(
+        const IComposerClient::VsyncPeriodChangeConstraints& constraints) {
+    int64_t newVsyncAppliedTime;
+
+    for (Display display : mComposerCallback->getDisplays()) {
+        for (Config config : mComposerClient->getDisplayConfigs(display)) {
+            std::vector<VsyncPeriodNanos> supportedVsyncPeriods;
+
+            EXPECT_EQ(Error::NONE, mComposerClient->getSupportedDisplayVsyncPeriods(
+                                           display, config, &supportedVsyncPeriods));
+            for (VsyncPeriodNanos newVsyncPeriod : supportedVsyncPeriods) {
+                VsyncPeriodNanos vsyncPeriodNanos;
+                EXPECT_EQ(Error::NONE,
+                          mComposerClient->getDisplayVsyncPeriod(display, &vsyncPeriodNanos));
+
+                if (vsyncPeriodNanos == newVsyncPeriod) {
+                    continue;
+                }
+
+                EXPECT_EQ(Error::NONE, mComposerClient->setActiveConfigAndVsyncPeriod(
+                                               display, config, newVsyncPeriod, constraints,
+                                               &newVsyncAppliedTime));
+
+                EXPECT_TRUE(newVsyncAppliedTime >= constraints.desiredTimeNanos);
+
+                // Refresh rate should change within a reasonable time
+                constexpr nsecs_t kReasonableTimeForChange = 1'000'000'000;  // 1 second
+                EXPECT_TRUE(newVsyncAppliedTime - constraints.desiredTimeNanos <=
+                            kReasonableTimeForChange);
+
+                while (systemTime() <= newVsyncAppliedTime) {
+                    EXPECT_EQ(Error::NONE,
+                              mComposerClient->getDisplayVsyncPeriod(display, &vsyncPeriodNanos));
+                    if (systemTime() <= constraints.desiredTimeNanos) {
+                        EXPECT_NE(vsyncPeriodNanos, newVsyncPeriod);
+                    }
+
+                    if (vsyncPeriodNanos == newVsyncPeriod) {
+                        break;
+                    }
+                    std::this_thread::sleep_for(10ms);
+                }
+                EXPECT_EQ(Error::NONE,
+                          mComposerClient->getDisplayVsyncPeriod(display, &vsyncPeriodNanos));
+                EXPECT_EQ(vsyncPeriodNanos, newVsyncPeriod);
+            }
+        }
+    }
+}
+
+TEST_P(GraphicsComposerHidlTest, setActiveConfigAndVsyncPeriod) {
+    IComposerClient::VsyncPeriodChangeConstraints constraints;
+
+    constraints.seamlessRequired = false;
+    constraints.desiredTimeNanos = systemTime();
+    Test_setActiveConfigAndVsyncPeriod(constraints);
+}
+
+TEST_P(GraphicsComposerHidlTest, setActiveConfigAndVsyncPeriod_delayed) {
+    IComposerClient::VsyncPeriodChangeConstraints constraints;
+
+    constexpr auto kDelayForChange = 300ms;
+    constraints.seamlessRequired = false;
+    constraints.desiredTimeNanos = systemTime() + kDelayForChange.count();
+    Test_setActiveConfigAndVsyncPeriod(constraints);
+}
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GraphicsComposerHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IComposer::descriptor)),
+        android::hardware::PrintInstanceNameToString);
+
+}  // namespace
+}  // namespace vts
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/mapper/4.0/Android.bp b/graphics/mapper/4.0/Android.bp
new file mode 100644
index 0000000..42c4942
--- /dev/null
+++ b/graphics/mapper/4.0/Android.bp
@@ -0,0 +1,21 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.graphics.mapper@4.0",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+        support_system_process: true,
+    },
+    srcs: [
+        "types.hal",
+        "IMapper.hal",
+    ],
+    interfaces: [
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.common@1.1",
+        "android.hardware.graphics.common@1.2",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: false,
+}
diff --git a/graphics/mapper/4.0/IMapper.hal b/graphics/mapper/4.0/IMapper.hal
new file mode 100644
index 0000000..640539f
--- /dev/null
+++ b/graphics/mapper/4.0/IMapper.hal
@@ -0,0 +1,313 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.mapper@4.0;
+
+import android.hardware.graphics.common@1.2::BufferUsage;
+import android.hardware.graphics.common@1.2::PixelFormat;
+import android.hardware.graphics.common@1.2::Rect;
+
+interface IMapper {
+    struct BufferDescriptorInfo {
+        /**
+         * The name of the buffer. Useful for debugging/tracing.
+         */
+        string name;
+
+        /**
+         * The width specifies how many columns of pixels must be in the
+         * allocated buffer, but does not necessarily represent the offset in
+         * columns between the same column in adjacent rows. The rows may be
+         * padded.
+         */
+        uint32_t width;
+
+       /**
+        * The height specifies how many rows of pixels must be in the
+        * allocated buffer.
+        */
+        uint32_t height;
+
+       /**
+        * The number of image layers that must be in the allocated buffer.
+        */
+        uint32_t layerCount;
+
+        /** Buffer pixel format. */
+        PixelFormat format;
+
+        /**
+         * Buffer usage mask; valid flags can be found in the definition of
+         * BufferUsage.
+         */
+        bitfield<BufferUsage> usage;
+    };
+
+    struct Rect {
+        int32_t left;
+        int32_t top;
+        int32_t width;
+        int32_t height;
+    };
+
+    /**
+     * Creates a buffer descriptor. The descriptor can be used with IAllocator
+     * to allocate buffers.
+     *
+     * Since the buffer descriptor fully describes a buffer, any device
+     * dependent or device independent checks must be performed here whenever
+     * possible. Specifically, when layered buffers are not supported, this
+     * function must return `UNSUPPORTED` if `description.layers` is great than
+     * 1.
+     *
+     * @param description Attributes of the descriptor.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_VALUE` if any of the specified attributes are invalid or
+     *       inconsistent.
+     *     - `NO_RESOURCES` if the creation cannot be fullfilled due to
+     *       unavailability of resources.
+     *     - `UNSUPPORTED` when any of the specified attributes are not
+     *       supported.
+     * @return descriptor Newly created buffer descriptor.
+     */
+    createDescriptor(BufferDescriptorInfo description)
+            generates (Error error,
+                       BufferDescriptor descriptor);
+
+    /**
+     * Imports a raw buffer handle to create an imported buffer handle for use
+     * with the rest of the mapper or with other in-process libraries.
+     *
+     * A buffer handle is considered raw when it is cloned (e.g., with
+     * `native_handle_clone()`) from another buffer handle locally, or when it
+     * is received from another HAL server/client or another process. A raw
+     * buffer handle must not be used to access the underlying graphic
+     * buffer. It must be imported to create an imported handle first.
+     *
+     * This function must at least validate the raw handle before creating the
+     * imported handle. It must also support importing the same raw handle
+     * multiple times to create multiple imported handles. The imported handle
+     * must be considered valid everywhere in the process, including in
+     * another instance of the mapper.
+     *
+     * Because of passthrough HALs, a raw buffer handle received from a HAL
+     * may actually have been imported in the process. importBuffer() must treat
+     * such a handle as if it is raw and must not return `BAD_BUFFER`. The
+     * returned handle is independent from the input handle as usual, and
+     * freeBuffer() must be called on it when it is no longer needed.
+     *
+     * @param rawHandle Raw buffer handle to import.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the raw handle is invalid.
+     *     - `NO_RESOURCES` if the raw handle cannot be imported due to
+     *       unavailability of resources.
+     * @return buffer Imported buffer handle that has the type
+     *     `buffer_handle_t` which is a handle type.
+     */
+    importBuffer(handle rawHandle) generates (Error error, pointer buffer);
+
+    /**
+     * Frees a buffer handle. Buffer handles returned by importBuffer() must be
+     * freed with this function when no longer needed.
+     *
+     * This function must free up all resources allocated by importBuffer() for
+     * the imported handle. For example, if the imported handle was created
+     * with `native_handle_create()`, this function must call
+     * `native_handle_close()` and `native_handle_delete()`.
+     *
+     * @param buffer Imported buffer handle.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the buffer is invalid.
+     */
+    freeBuffer(pointer buffer) generates (Error error);
+
+    /**
+     * Validates that the buffer can be safely accessed by a caller who assumes
+     * the specified @p description and @p stride. This must at least validate
+     * that the buffer size is large enough. Validating the buffer against
+     * individual buffer attributes is optional.
+     *
+     * @param buffer Buffer to validate against.
+     * @param description Attributes of the buffer.
+     * @param stride Stride returned by IAllocator::allocate().
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the buffer is invalid.
+     *     - `BAD_VALUE` if the buffer cannot be safely accessed.
+     */
+    validateBufferSize(pointer buffer,
+                       BufferDescriptorInfo description,
+                       uint32_t stride)
+            generates (Error error);
+
+    /**
+     * Calculates the transport size of a buffer. An imported buffer handle is a
+     * raw buffer handle with the process-local runtime data appended. This
+     * function, for example, allows a caller to omit the process-local runtime
+     * data at the tail when serializing the imported buffer handle.
+     *
+     * Note that a client might or might not omit the process-local runtime data
+     * when sending an imported buffer handle. The mapper must support both
+     * cases on the receiving end.
+     *
+     * @param buffer Buffer to get the transport size from.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the buffer is invalid.
+     * @return numFds The number of file descriptors needed for transport.
+     * @return numInts The number of integers needed for transport.
+     */
+    getTransportSize(pointer buffer)
+            generates (Error error,
+                       uint32_t numFds,
+                       uint32_t numInts);
+
+    /**
+     * Locks the given buffer for the specified CPU usage.
+     *
+     * Locking the same buffer simultaneously from multiple threads is
+     * permitted, but if any of the threads attempt to lock the buffer for
+     * writing, the behavior is undefined, except that it must not cause
+     * process termination or block the client indefinitely. Leaving the
+     * buffer content in an indeterminate state or returning an error are both
+     * acceptable.
+     *
+     * 1D buffers (width = size in bytes, height = 1, pixel_format = BLOB) must
+     * "lock in place". The buffers must be directly accessible via mapping.
+     *
+     * The client must not modify the content of the buffer outside of
+     * @p accessRegion, and the device need not guarantee that content outside
+     * of @p accessRegion is valid for reading. The result of reading or writing
+     * outside of @p accessRegion is undefined, except that it must not cause
+     * process termination.
+     *
+     * On success, @p data must be filled with a pointer to the locked buffer
+     * memory. This address will represent the top-left corner of the entire
+     * buffer, even if @p accessRegion does not begin at the top-left corner.
+     *
+     * On success, bytesPerPixel must contain the number of bytes per pixel in
+     * the buffer. If the bytesPerPixel is unknown or variable, a value of -1
+     * should be returned. bytesPerStride must contain the bytes per stride of
+     * the buffer. If the bytesPerStride is unknown or variable, a value of -1
+     * should be returned.
+     *
+     * The locked buffer must adhere to the format requested at allocation time
+     * in the BufferDescriptorInfo.
+     *
+     * @param buffer Buffer to lock.
+     * @param cpuUsage CPU usage flags to request. See +ndk
+     *     libnativewindow#AHardwareBuffer_UsageFlags for possible values.
+     * @param accessRegion Portion of the buffer that the client intends to
+     *     access.
+     * @param acquireFence Handle containing a file descriptor referring to a
+     *     sync fence object, which will be signaled when it is safe for the
+     *     mapper to lock the buffer. @p acquireFence may be an empty fence if
+     *     it is already safe to lock.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the buffer is invalid or is incompatible with this
+     *       function.
+     *     - `BAD_VALUE` if @p cpuUsage is 0, contains non-CPU usage flags, or
+     *       is incompatible with the buffer. Also if the @p accessRegion is
+     *       outside the bounds of the buffer or the accessRegion is invalid.
+     *     - `NO_RESOURCES` if the buffer cannot be locked at this time. Note
+     *       that locking may succeed at a later time.
+     * @return data CPU-accessible pointer to the buffer data.
+     * @return bytesPerPixel the number of bytes per pixel in the buffer
+     * @return bytesPerStride the number of bytes per stride of the buffer
+     */
+    lock(pointer buffer,
+         uint64_t cpuUsage,
+         Rect accessRegion,
+         handle acquireFence)
+            generates (Error error,
+                       pointer data,
+                       int32_t bytesPerPixel,
+                       int32_t bytesPerStride);
+
+    /**
+     * Locks a YCbCr buffer for the specified CPU usage.
+     *
+     * This is largely the same as lock(), except that instead of returning a
+     * pointer directly to the buffer data, it returns a `YCbCrLayout` struct
+     * describing how to access the data planes.
+     *
+     * This function must work on buffers with
+     * `AHARDWAREBUFFER_FORMAT_Y8Cb8Cr8_*` if supported by the device, as well
+     * as with any other formats requested by multimedia codecs when they are
+     * configured with a flexible-YUV-compatible color format.
+     *
+     * @param buffer Buffer to lock.
+     * @param cpuUsage CPU usage flags to request. See +ndk
+     *     libnativewindow#AHardwareBuffer_UsageFlags for possible values.
+     * @param accessRegion Portion of the buffer that the client intends to
+     *     access.
+     * @param acquireFence Handle containing a file descriptor referring to a
+     *     sync fence object, which will be signaled when it is safe for the
+     *     mapper to lock the buffer. @p acquireFence may be empty if it is
+     *     already safe to lock.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the buffer is invalid or is incompatible with this
+     *       function.
+     *     - `BAD_VALUE` if @p cpuUsage is 0, contains non-CPU usage flags, or
+     *       is incompatible with the buffer.
+     *     - `NO_RESOURCES` if the buffer cannot be locked at this time. Note
+     *       that locking may succeed at a later time.
+     * @return layout Data layout of the locked buffer.
+     */
+    lockYCbCr(pointer buffer,
+              uint64_t cpuUsage,
+              Rect accessRegion,
+              handle acquireFence)
+            generates (Error error,
+                       YCbCrLayout layout);
+
+    /**
+     * Unlocks a buffer to indicate all CPU accesses to the buffer have
+     * completed.
+     *
+     * @param buffer Buffer to unlock.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the buffer is invalid or not locked.
+     * @return releaseFence Handle containing a file descriptor referring to a
+     *     sync fence object. The sync fence object will be signaled when the
+     *     mapper has completed any pending work. @p releaseFence may be an
+     *     empty fence.
+     */
+    unlock(pointer buffer) generates (Error error, handle releaseFence);
+
+    /**
+     * Test whether the given BufferDescriptorInfo is allocatable.
+     *
+     * If this function returns true, it means that a buffer with the given
+     * description can be allocated on this implementation, unless resource
+     * exhaustion occurs. If this function returns false, it means that the
+     * allocation of the given description will never succeed.
+     *
+     * @param description the description of the buffer
+     * @return supported whether the description is supported
+     */
+    isSupported(BufferDescriptorInfo description)
+            generates (Error error,
+                       bool supported);
+
+};
+
diff --git a/graphics/mapper/4.0/types.hal b/graphics/mapper/4.0/types.hal
new file mode 100644
index 0000000..2fdfa65
--- /dev/null
+++ b/graphics/mapper/4.0/types.hal
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.mapper@4.0;
+
+/**
+ * Error values that may be returned by a method of IAllocator or IMapper.
+ */
+enum Error : int32_t {
+    /**
+     * No error.
+     */
+    NONE            = 0,
+    /**
+     * Invalid BufferDescriptor.
+     */
+    BAD_DESCRIPTOR  = 1,
+    /**
+     * Invalid buffer handle.
+     */
+    BAD_BUFFER      = 2,
+    /**
+     * Invalid HardwareBufferDescription.
+     */
+    BAD_VALUE       = 3,
+    /**
+     * Resource unavailable.
+     */
+    NO_RESOURCES    = 5,
+    /**
+     * Permanent failure.
+     */
+    UNSUPPORTED     = 7,
+};
+
+/**
+ * A buffer descriptor is an implementation-defined opaque data returned by
+ * createDescriptor(). It describes the properties of a buffer and is consumed
+ * by the allocator.
+ */
+typedef vec<uint8_t> BufferDescriptor;
+
+/**
+ * Structure for describing YCbCr formats for consumption by applications.
+ * This is used with PixelFormat::YCBCR_*_888.
+ *
+ * Buffer chroma subsampling is defined in the format.
+ * e.g. PixelFormat::YCBCR_420_888 has subsampling 4:2:0.
+ *
+ * Buffers must have a 8 bit depth.
+ *
+ * y, cb, and cr point to the first byte of their respective planes.
+ *
+ * Stride describes the distance in bytes from the first value of one row of
+ * the image to the first value of the next row. It includes the width of the
+ * image plus padding.
+ * yStride is the stride of the luma plane.
+ * cStride is the stride of the chroma planes.
+ *
+ * chromaStep is the distance in bytes from one chroma pixel value to the
+ * next. This is 2 bytes for semiplanar (because chroma values are interleaved
+ * and each chroma value is one byte) and 1 for planar.
+ */
+struct YCbCrLayout {
+    pointer y;
+    pointer cb;
+    pointer cr;
+    uint32_t yStride;
+    uint32_t cStride;
+    uint32_t chromaStep;
+};
diff --git a/graphics/mapper/4.0/utils/OWNERS b/graphics/mapper/4.0/utils/OWNERS
new file mode 100644
index 0000000..96f6d51
--- /dev/null
+++ b/graphics/mapper/4.0/utils/OWNERS
@@ -0,0 +1,3 @@
+# Graphics team
+marissaw@google.com
+stoza@google.com
diff --git a/graphics/mapper/4.0/utils/vts/Android.bp b/graphics/mapper/4.0/utils/vts/Android.bp
new file mode 100644
index 0000000..e451584
--- /dev/null
+++ b/graphics/mapper/4.0/utils/vts/Android.bp
@@ -0,0 +1,34 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_static {
+    name: "android.hardware.graphics.mapper@4.0-vts",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: ["MapperVts.cpp"],
+    cflags: [
+        "-O0",
+        "-g",
+    ],
+    static_libs: [
+        "android.hardware.graphics.allocator@4.0",
+        "android.hardware.graphics.mapper@4.0",
+    ],
+    export_static_lib_headers: [
+        "android.hardware.graphics.allocator@4.0",
+        "android.hardware.graphics.mapper@4.0",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/graphics/mapper/4.0/utils/vts/MapperVts.cpp b/graphics/mapper/4.0/utils/vts/MapperVts.cpp
new file mode 100644
index 0000000..056b7c9
--- /dev/null
+++ b/graphics/mapper/4.0/utils/vts/MapperVts.cpp
@@ -0,0 +1,304 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <mapper-vts/4.0/MapperVts.h>
+
+#include <VtsHalHidlTargetTestBase.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace mapper {
+namespace V4_0 {
+namespace vts {
+
+Gralloc::Gralloc(const std::string& allocatorServiceName, const std::string& mapperServiceName,
+                 bool errOnFailure) {
+    if (errOnFailure) {
+        init(allocatorServiceName, mapperServiceName);
+    } else {
+        initNoErr(allocatorServiceName, mapperServiceName);
+    }
+}
+
+void Gralloc::init(const std::string& allocatorServiceName, const std::string& mapperServiceName) {
+    mAllocator = ::testing::VtsHalHidlTargetTestBase::getService<IAllocator>(allocatorServiceName);
+    ASSERT_NE(nullptr, mAllocator.get()) << "failed to get allocator service";
+
+    mMapper = ::testing::VtsHalHidlTargetTestBase::getService<IMapper>(mapperServiceName);
+    ASSERT_NE(nullptr, mMapper.get()) << "failed to get mapper service";
+    ASSERT_FALSE(mMapper->isRemote()) << "mapper is not in passthrough mode";
+}
+
+void Gralloc::initNoErr(const std::string& allocatorServiceName,
+                        const std::string& mapperServiceName) {
+    mAllocator = ::testing::VtsHalHidlTargetTestBase::getService<IAllocator>(allocatorServiceName);
+
+    mMapper = ::testing::VtsHalHidlTargetTestBase::getService<IMapper>(mapperServiceName);
+    if (mMapper.get()) {
+        ASSERT_FALSE(mMapper->isRemote()) << "mapper is not in passthrough mode";
+    }
+}
+
+Gralloc::~Gralloc() {
+    for (auto bufferHandle : mClonedBuffers) {
+        auto buffer = const_cast<native_handle_t*>(bufferHandle);
+        native_handle_close(buffer);
+        native_handle_delete(buffer);
+    }
+    mClonedBuffers.clear();
+
+    for (auto bufferHandle : mImportedBuffers) {
+        auto buffer = const_cast<native_handle_t*>(bufferHandle);
+        EXPECT_EQ(Error::NONE, mMapper->freeBuffer(buffer)) << "failed to free buffer " << buffer;
+    }
+    mImportedBuffers.clear();
+}
+
+sp<IAllocator> Gralloc::getAllocator() const {
+    return mAllocator;
+}
+
+std::string Gralloc::dumpDebugInfo() {
+    std::string debugInfo;
+    mAllocator->dumpDebugInfo([&](const auto& tmpDebugInfo) { debugInfo = tmpDebugInfo.c_str(); });
+
+    return debugInfo;
+}
+
+const native_handle_t* Gralloc::cloneBuffer(const hidl_handle& rawHandle) {
+    const native_handle_t* bufferHandle = native_handle_clone(rawHandle.getNativeHandle());
+    EXPECT_NE(nullptr, bufferHandle);
+
+    if (bufferHandle) {
+        mClonedBuffers.insert(bufferHandle);
+    }
+
+    return bufferHandle;
+}
+
+std::vector<const native_handle_t*> Gralloc::allocate(const BufferDescriptor& descriptor,
+                                                      uint32_t count, bool import,
+                                                      uint32_t* outStride) {
+    std::vector<const native_handle_t*> bufferHandles;
+    bufferHandles.reserve(count);
+    mAllocator->allocate(descriptor, count,
+                         [&](const auto& tmpError, const auto& tmpStride, const auto& tmpBuffers) {
+                             ASSERT_EQ(Error::NONE, tmpError) << "failed to allocate buffers";
+                             ASSERT_EQ(count, tmpBuffers.size()) << "invalid buffer array";
+
+                             for (uint32_t i = 0; i < count; i++) {
+                                 if (import) {
+                                     ASSERT_NO_FATAL_FAILURE(
+                                             bufferHandles.push_back(importBuffer(tmpBuffers[i])));
+                                 } else {
+                                     ASSERT_NO_FATAL_FAILURE(
+                                             bufferHandles.push_back(cloneBuffer(tmpBuffers[i])));
+                                 }
+                             }
+
+                             if (outStride) {
+                                 *outStride = tmpStride;
+                             }
+                         });
+
+    if (::testing::Test::HasFatalFailure()) {
+        bufferHandles.clear();
+    }
+
+    return bufferHandles;
+}
+
+const native_handle_t* Gralloc::allocate(const IMapper::BufferDescriptorInfo& descriptorInfo,
+                                         bool import, uint32_t* outStride) {
+    BufferDescriptor descriptor = createDescriptor(descriptorInfo);
+    if (::testing::Test::HasFatalFailure()) {
+        return nullptr;
+    }
+
+    auto buffers = allocate(descriptor, 1, import, outStride);
+    if (::testing::Test::HasFatalFailure()) {
+        return nullptr;
+    }
+
+    return buffers[0];
+}
+
+sp<IMapper> Gralloc::getMapper() const {
+    return mMapper;
+}
+
+BufferDescriptor Gralloc::createDescriptor(const IMapper::BufferDescriptorInfo& descriptorInfo) {
+    BufferDescriptor descriptor;
+    mMapper->createDescriptor(descriptorInfo, [&](const auto& tmpError, const auto& tmpDescriptor) {
+        ASSERT_EQ(Error::NONE, tmpError) << "failed to create descriptor";
+        descriptor = tmpDescriptor;
+    });
+
+    return descriptor;
+}
+
+const native_handle_t* Gralloc::importBuffer(const hidl_handle& rawHandle) {
+    const native_handle_t* bufferHandle = nullptr;
+    mMapper->importBuffer(rawHandle, [&](const auto& tmpError, const auto& tmpBuffer) {
+        ASSERT_EQ(Error::NONE, tmpError)
+                << "failed to import buffer %p" << rawHandle.getNativeHandle();
+        bufferHandle = static_cast<const native_handle_t*>(tmpBuffer);
+    });
+
+    if (bufferHandle) {
+        mImportedBuffers.insert(bufferHandle);
+    }
+
+    return bufferHandle;
+}
+
+void Gralloc::freeBuffer(const native_handle_t* bufferHandle) {
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+    if (mImportedBuffers.erase(bufferHandle)) {
+        Error error = mMapper->freeBuffer(buffer);
+        ASSERT_EQ(Error::NONE, error) << "failed to free buffer " << buffer;
+    } else {
+        mClonedBuffers.erase(bufferHandle);
+        native_handle_close(buffer);
+        native_handle_delete(buffer);
+    }
+}
+
+void* Gralloc::lock(const native_handle_t* bufferHandle, uint64_t cpuUsage,
+                    const IMapper::Rect& accessRegion, int acquireFence, int32_t* outBytesPerPixel,
+                    int32_t* outBytesPerStride) {
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+    NATIVE_HANDLE_DECLARE_STORAGE(acquireFenceStorage, 1, 0);
+    hidl_handle acquireFenceHandle;
+    if (acquireFence >= 0) {
+        auto h = native_handle_init(acquireFenceStorage, 1, 0);
+        h->data[0] = acquireFence;
+        acquireFenceHandle = h;
+    }
+
+    *outBytesPerPixel = -1;
+    *outBytesPerStride = -1;
+
+    void* data = nullptr;
+    mMapper->lock(buffer, cpuUsage, accessRegion, acquireFenceHandle,
+                  [&](const auto& tmpError, const auto& tmpData, int32_t tmpBytesPerPixel,
+                      int32_t tmpBytesPerStride) {
+                      ASSERT_EQ(Error::NONE, tmpError) << "failed to lock buffer " << buffer;
+                      data = tmpData;
+                      *outBytesPerPixel = tmpBytesPerPixel;
+                      *outBytesPerStride = tmpBytesPerStride;
+                  });
+
+    if (acquireFence >= 0) {
+        close(acquireFence);
+    }
+
+    return data;
+}
+
+YCbCrLayout Gralloc::lockYCbCr(const native_handle_t* bufferHandle, uint64_t cpuUsage,
+                               const IMapper::Rect& accessRegion, int acquireFence) {
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+    NATIVE_HANDLE_DECLARE_STORAGE(acquireFenceStorage, 1, 0);
+    hidl_handle acquireFenceHandle;
+    if (acquireFence >= 0) {
+        auto h = native_handle_init(acquireFenceStorage, 1, 0);
+        h->data[0] = acquireFence;
+        acquireFenceHandle = h;
+    }
+
+    YCbCrLayout layout = {};
+    mMapper->lockYCbCr(buffer, cpuUsage, accessRegion, acquireFenceHandle,
+                       [&](const auto& tmpError, const auto& tmpLayout) {
+                           ASSERT_EQ(Error::NONE, tmpError)
+                                   << "failed to lockYCbCr buffer " << buffer;
+                           layout = tmpLayout;
+                       });
+
+    if (acquireFence >= 0) {
+        close(acquireFence);
+    }
+
+    return layout;
+}
+
+int Gralloc::unlock(const native_handle_t* bufferHandle) {
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+    int releaseFence = -1;
+    mMapper->unlock(buffer, [&](const auto& tmpError, const auto& tmpReleaseFence) {
+        ASSERT_EQ(Error::NONE, tmpError) << "failed to unlock buffer " << buffer;
+
+        auto fenceHandle = tmpReleaseFence.getNativeHandle();
+        if (fenceHandle) {
+            ASSERT_EQ(0, fenceHandle->numInts) << "invalid fence handle " << fenceHandle;
+            if (fenceHandle->numFds == 1) {
+                releaseFence = dup(fenceHandle->data[0]);
+                ASSERT_LT(0, releaseFence) << "failed to dup fence fd";
+            } else {
+                ASSERT_EQ(0, fenceHandle->numFds) << " invalid fence handle " << fenceHandle;
+            }
+        }
+    });
+
+    return releaseFence;
+}
+
+bool Gralloc::validateBufferSize(const native_handle_t* bufferHandle,
+                                 const IMapper::BufferDescriptorInfo& descriptorInfo,
+                                 uint32_t stride) {
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+    Error error = mMapper->validateBufferSize(buffer, descriptorInfo, stride);
+    return error == Error::NONE;
+}
+
+void Gralloc::getTransportSize(const native_handle_t* bufferHandle, uint32_t* outNumFds,
+                               uint32_t* outNumInts) {
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+    *outNumFds = 0;
+    *outNumInts = 0;
+    mMapper->getTransportSize(buffer, [&](const auto& tmpError, const auto& tmpNumFds,
+                                          const auto& tmpNumInts) {
+        ASSERT_EQ(Error::NONE, tmpError) << "failed to get transport size";
+        ASSERT_GE(bufferHandle->numFds, int(tmpNumFds)) << "invalid numFds " << tmpNumFds;
+        ASSERT_GE(bufferHandle->numInts, int(tmpNumInts)) << "invalid numInts " << tmpNumInts;
+
+        *outNumFds = tmpNumFds;
+        *outNumInts = tmpNumInts;
+    });
+}
+
+bool Gralloc::isSupported(const IMapper::BufferDescriptorInfo& descriptorInfo) {
+    bool supported = false;
+    mMapper->isSupported(descriptorInfo, [&](const auto& tmpError, const auto& tmpSupported) {
+        ASSERT_EQ(Error::NONE, tmpError) << "failed to check is supported";
+        supported = tmpSupported;
+    });
+    return supported;
+}
+
+}  // namespace vts
+}  // namespace V4_0
+}  // namespace mapper
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/mapper/4.0/utils/vts/include/mapper-vts/4.0/MapperVts.h b/graphics/mapper/4.0/utils/vts/include/mapper-vts/4.0/MapperVts.h
new file mode 100644
index 0000000..03ce764
--- /dev/null
+++ b/graphics/mapper/4.0/utils/vts/include/mapper-vts/4.0/MapperVts.h
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <string>
+#include <unordered_set>
+#include <vector>
+
+#include <android/hardware/graphics/allocator/4.0/IAllocator.h>
+#include <android/hardware/graphics/mapper/4.0/IMapper.h>
+#include <utils/StrongPointer.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace mapper {
+namespace V4_0 {
+namespace vts {
+
+using android::hardware::graphics::allocator::V4_0::IAllocator;
+
+// A wrapper to IAllocator and IMapper.
+class Gralloc {
+  public:
+    Gralloc(const std::string& allocatorServiceName = "default",
+            const std::string& mapperServiceName = "default", bool errOnFailure = true);
+    ~Gralloc();
+
+    // IAllocator methods
+
+    sp<IAllocator> getAllocator() const;
+
+    std::string dumpDebugInfo();
+
+    // When import is false, this simply calls IAllocator::allocate. When import
+    // is true, the returned buffers are also imported into the mapper.
+    //
+    // Either case, the returned buffers must be freed with freeBuffer.
+    std::vector<const native_handle_t*> allocate(const BufferDescriptor& descriptor, uint32_t count,
+                                                 bool import = true, uint32_t* outStride = nullptr);
+    const native_handle_t* allocate(const IMapper::BufferDescriptorInfo& descriptorInfo,
+                                    bool import = true, uint32_t* outStride = nullptr);
+
+    // IMapper methods
+
+    sp<IMapper> getMapper() const;
+
+    BufferDescriptor createDescriptor(const IMapper::BufferDescriptorInfo& descriptorInfo);
+
+    const native_handle_t* importBuffer(const hidl_handle& rawHandle);
+    void freeBuffer(const native_handle_t* bufferHandle);
+
+    // We use fd instead of hidl_handle in these functions to pass fences
+    // in and out of the mapper.  The ownership of the fd is always transferred
+    // with each of these functions.
+    void* lock(const native_handle_t* bufferHandle, uint64_t cpuUsage,
+               const IMapper::Rect& accessRegion, int acquireFence, int32_t* outBytesPerPixel,
+               int32_t* outBytesPerStride);
+    YCbCrLayout lockYCbCr(const native_handle_t* bufferHandle, uint64_t cpuUsage,
+                          const IMapper::Rect& accessRegion, int acquireFence);
+    int unlock(const native_handle_t* bufferHandle);
+
+    bool validateBufferSize(const native_handle_t* bufferHandle,
+                            const IMapper::BufferDescriptorInfo& descriptorInfo, uint32_t stride);
+    void getTransportSize(const native_handle_t* bufferHandle, uint32_t* outNumFds,
+                          uint32_t* outNumInts);
+
+    bool isSupported(const IMapper::BufferDescriptorInfo& descriptorInfo);
+
+  private:
+    void init(const std::string& allocatorServiceName, const std::string& mapperServiceName);
+
+    // initialize without checking for failure to get service
+    void initNoErr(const std::string& allocatorServiceName, const std::string& mapperServiceName);
+    const native_handle_t* cloneBuffer(const hidl_handle& rawHandle);
+
+    sp<IAllocator> mAllocator;
+    sp<IMapper> mMapper;
+
+    // Keep track of all cloned and imported handles.  When a test fails with
+    // ASSERT_*, the destructor will free the handles for the test.
+    std::unordered_set<const native_handle_t*> mClonedBuffers;
+    std::unordered_set<const native_handle_t*> mImportedBuffers;
+};
+
+}  // namespace vts
+}  // namespace V4_0
+}  // namespace mapper
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/mapper/4.0/vts/OWNERS b/graphics/mapper/4.0/vts/OWNERS
new file mode 100644
index 0000000..96f6d51
--- /dev/null
+++ b/graphics/mapper/4.0/vts/OWNERS
@@ -0,0 +1,3 @@
+# Graphics team
+marissaw@google.com
+stoza@google.com
diff --git a/graphics/mapper/4.0/vts/functional/Android.bp b/graphics/mapper/4.0/vts/functional/Android.bp
new file mode 100644
index 0000000..a90ee0c
--- /dev/null
+++ b/graphics/mapper/4.0/vts/functional/Android.bp
@@ -0,0 +1,30 @@
+//
+// Copyright 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_test {
+    name: "VtsHalGraphicsMapperV4_0TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: ["VtsHalGraphicsMapperV4_0TargetTest.cpp"],
+    static_libs: [
+        "android.hardware.graphics.allocator@4.0",
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.common@1.1",
+        "android.hardware.graphics.common@1.2",
+        "android.hardware.graphics.mapper@4.0",
+        "android.hardware.graphics.mapper@4.0-vts",
+    ],
+    test_suites: ["general-tests"],
+}
diff --git a/graphics/mapper/4.0/vts/functional/VtsHalGraphicsMapperV4_0TargetTest.cpp b/graphics/mapper/4.0/vts/functional/VtsHalGraphicsMapperV4_0TargetTest.cpp
new file mode 100644
index 0000000..62ff613
--- /dev/null
+++ b/graphics/mapper/4.0/vts/functional/VtsHalGraphicsMapperV4_0TargetTest.cpp
@@ -0,0 +1,538 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "VtsHalGraphicsMapperV4_0TargetTest"
+
+#include <chrono>
+#include <thread>
+#include <vector>
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android-base/logging.h>
+#include <mapper-vts/4.0/MapperVts.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace mapper {
+namespace V4_0 {
+namespace vts {
+namespace {
+
+using android::hardware::graphics::common::V1_2::BufferUsage;
+using android::hardware::graphics::common::V1_2::PixelFormat;
+
+// Test environment for graphics.mapper.
+class GraphicsMapperHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
+  public:
+    // get the test environment singleton
+    static GraphicsMapperHidlEnvironment* Instance() {
+        static GraphicsMapperHidlEnvironment* instance = new GraphicsMapperHidlEnvironment;
+        return instance;
+    }
+
+    virtual void registerTestServices() override {
+        registerTestService<IAllocator>();
+        registerTestService<IMapper>();
+    }
+};
+
+class GraphicsMapperHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+  protected:
+    void SetUp() override {
+        ASSERT_NO_FATAL_FAILURE(
+                mGralloc = std::make_unique<Gralloc>(
+                        GraphicsMapperHidlEnvironment::Instance()->getServiceName<IAllocator>(),
+                        GraphicsMapperHidlEnvironment::Instance()->getServiceName<IMapper>()));
+
+        mDummyDescriptorInfo.name = "dummy";
+        mDummyDescriptorInfo.width = 64;
+        mDummyDescriptorInfo.height = 64;
+        mDummyDescriptorInfo.layerCount = 1;
+        mDummyDescriptorInfo.format = PixelFormat::RGBA_8888;
+        mDummyDescriptorInfo.usage =
+                static_cast<uint64_t>(BufferUsage::CPU_WRITE_OFTEN | BufferUsage::CPU_READ_OFTEN);
+    }
+
+    void TearDown() override {}
+
+    std::unique_ptr<Gralloc> mGralloc;
+    IMapper::BufferDescriptorInfo mDummyDescriptorInfo{};
+};
+
+/**
+ * Test IAllocator::dumpDebugInfo by calling it.
+ */
+TEST_F(GraphicsMapperHidlTest, AllocatorDumpDebugInfo) {
+    mGralloc->dumpDebugInfo();
+}
+
+/**
+ * Test IAllocator::allocate with valid buffer descriptors.
+ */
+TEST_F(GraphicsMapperHidlTest, AllocatorAllocate) {
+    BufferDescriptor descriptor;
+    ASSERT_NO_FATAL_FAILURE(descriptor = mGralloc->createDescriptor(mDummyDescriptorInfo));
+
+    for (uint32_t count = 0; count < 5; count++) {
+        std::vector<const native_handle_t*> bufferHandles;
+        uint32_t stride;
+        ASSERT_NO_FATAL_FAILURE(bufferHandles =
+                                        mGralloc->allocate(descriptor, count, false, &stride));
+
+        if (count >= 1) {
+            EXPECT_LE(mDummyDescriptorInfo.width, stride) << "invalid buffer stride";
+        }
+
+        for (auto bufferHandle : bufferHandles) {
+            mGralloc->freeBuffer(bufferHandle);
+        }
+    }
+}
+
+/**
+ * Test IAllocator::allocate with invalid buffer descriptors.
+ */
+TEST_F(GraphicsMapperHidlTest, AllocatorAllocateNegative) {
+    // this assumes any valid descriptor is non-empty
+    BufferDescriptor descriptor;
+    mGralloc->getAllocator()->allocate(descriptor, 1,
+                                       [&](const auto& tmpError, const auto&, const auto&) {
+                                           EXPECT_EQ(Error::BAD_DESCRIPTOR, tmpError);
+                                       });
+}
+
+/**
+ * Test IAllocator::allocate does not leak.
+ */
+TEST_F(GraphicsMapperHidlTest, AllocatorAllocateNoLeak) {
+    auto info = mDummyDescriptorInfo;
+    info.width = 1024;
+    info.height = 1024;
+
+    for (int i = 0; i < 2048; i++) {
+        auto bufferHandle = mGralloc->allocate(info, false);
+        mGralloc->freeBuffer(bufferHandle);
+    }
+}
+
+/**
+ * Test that IAllocator::allocate is thread-safe.
+ */
+TEST_F(GraphicsMapperHidlTest, AllocatorAllocateThreaded) {
+    BufferDescriptor descriptor;
+    ASSERT_NO_FATAL_FAILURE(descriptor = mGralloc->createDescriptor(mDummyDescriptorInfo));
+
+    std::atomic<bool> timeUp(false);
+    std::atomic<uint64_t> allocationCount(0);
+    auto threadLoop = [&]() {
+        while (!timeUp) {
+            mGralloc->getAllocator()->allocate(
+                    descriptor, 1,
+                    [&](const auto&, const auto&, const auto&) { allocationCount++; });
+        }
+    };
+
+    std::vector<std::thread> threads;
+    for (int i = 0; i < 8; i++) {
+        threads.push_back(std::thread(threadLoop));
+    }
+
+    std::this_thread::sleep_for(std::chrono::seconds(3));
+    timeUp = true;
+    LOG(VERBOSE) << "Made " << allocationCount << " threaded allocations";
+
+    for (auto& thread : threads) {
+        thread.join();
+    }
+}
+
+/**
+ * Test IMapper::createDescriptor with valid descriptor info.
+ */
+TEST_F(GraphicsMapperHidlTest, CreateDescriptorBasic) {
+    ASSERT_NO_FATAL_FAILURE(mGralloc->createDescriptor(mDummyDescriptorInfo));
+}
+
+/**
+ * Test IMapper::createDescriptor with invalid descriptor info.
+ */
+TEST_F(GraphicsMapperHidlTest, CreateDescriptorNegative) {
+    auto info = mDummyDescriptorInfo;
+    info.width = 0;
+    mGralloc->getMapper()->createDescriptor(info, [&](const auto& tmpError, const auto&) {
+        EXPECT_EQ(Error::BAD_VALUE, tmpError) << "createDescriptor did not fail with BAD_VALUE";
+    });
+}
+
+/**
+ * Test IMapper::importBuffer and IMapper::freeBuffer with allocated buffers.
+ */
+TEST_F(GraphicsMapperHidlTest, ImportFreeBufferBasic) {
+    const native_handle_t* bufferHandle;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(mDummyDescriptorInfo, true));
+    ASSERT_NO_FATAL_FAILURE(mGralloc->freeBuffer(bufferHandle));
+}
+
+/**
+ * Test IMapper::importBuffer and IMapper::freeBuffer with cloned buffers.
+ */
+TEST_F(GraphicsMapperHidlTest, ImportFreeBufferClone) {
+    const native_handle_t* clonedBufferHandle;
+    ASSERT_NO_FATAL_FAILURE(clonedBufferHandle = mGralloc->allocate(mDummyDescriptorInfo, false));
+
+    // A cloned handle is a raw handle. Check that we can import it multiple
+    // times.
+    const native_handle_t* importedBufferHandles[2];
+    ASSERT_NO_FATAL_FAILURE(importedBufferHandles[0] = mGralloc->importBuffer(clonedBufferHandle));
+    ASSERT_NO_FATAL_FAILURE(importedBufferHandles[1] = mGralloc->importBuffer(clonedBufferHandle));
+    ASSERT_NO_FATAL_FAILURE(mGralloc->freeBuffer(importedBufferHandles[0]));
+    ASSERT_NO_FATAL_FAILURE(mGralloc->freeBuffer(importedBufferHandles[1]));
+
+    ASSERT_NO_FATAL_FAILURE(mGralloc->freeBuffer(clonedBufferHandle));
+}
+
+/**
+ * Test IMapper::importBuffer and IMapper::freeBuffer cross mapper instances.
+ */
+TEST_F(GraphicsMapperHidlTest, ImportFreeBufferSingleton) {
+    const native_handle_t* rawHandle;
+    ASSERT_NO_FATAL_FAILURE(rawHandle = mGralloc->allocate(mDummyDescriptorInfo, false));
+
+    native_handle_t* importedHandle = nullptr;
+    mGralloc->getMapper()->importBuffer(rawHandle, [&](const auto& tmpError, const auto& buffer) {
+        ASSERT_EQ(Error::NONE, tmpError);
+        importedHandle = static_cast<native_handle_t*>(buffer);
+    });
+
+    // free the imported handle with another mapper
+    std::unique_ptr<Gralloc> anotherGralloc;
+    ASSERT_NO_FATAL_FAILURE(
+            anotherGralloc = std::make_unique<Gralloc>(
+                    GraphicsMapperHidlEnvironment::Instance()->getServiceName<IAllocator>(),
+                    GraphicsMapperHidlEnvironment::Instance()->getServiceName<IMapper>()));
+    Error error = mGralloc->getMapper()->freeBuffer(importedHandle);
+    ASSERT_EQ(Error::NONE, error);
+
+    ASSERT_NO_FATAL_FAILURE(mGralloc->freeBuffer(rawHandle));
+}
+
+/**
+ * Test IMapper::importBuffer and IMapper::freeBuffer do not leak.
+ */
+TEST_F(GraphicsMapperHidlTest, ImportFreeBufferNoLeak) {
+    auto info = mDummyDescriptorInfo;
+    info.width = 1024;
+    info.height = 1024;
+
+    for (int i = 0; i < 2048; i++) {
+        auto bufferHandle = mGralloc->allocate(info, true);
+        mGralloc->freeBuffer(bufferHandle);
+    }
+}
+
+/**
+ * Test IMapper::importBuffer with invalid buffers.
+ */
+TEST_F(GraphicsMapperHidlTest, ImportBufferNegative) {
+    native_handle_t* invalidHandle = nullptr;
+    mGralloc->getMapper()->importBuffer(invalidHandle, [&](const auto& tmpError, const auto&) {
+        EXPECT_EQ(Error::BAD_BUFFER, tmpError)
+                << "importBuffer with nullptr did not fail with BAD_BUFFER";
+    });
+
+    invalidHandle = native_handle_create(0, 0);
+    mGralloc->getMapper()->importBuffer(invalidHandle, [&](const auto& tmpError, const auto&) {
+        EXPECT_EQ(Error::BAD_BUFFER, tmpError)
+                << "importBuffer with invalid handle did not fail with BAD_BUFFER";
+    });
+    native_handle_delete(invalidHandle);
+}
+
+/**
+ * Test IMapper::freeBuffer with invalid buffers.
+ */
+TEST_F(GraphicsMapperHidlTest, FreeBufferNegative) {
+    native_handle_t* invalidHandle = nullptr;
+    Error error = mGralloc->getMapper()->freeBuffer(invalidHandle);
+    EXPECT_EQ(Error::BAD_BUFFER, error) << "freeBuffer with nullptr did not fail with BAD_BUFFER";
+
+    invalidHandle = native_handle_create(0, 0);
+    error = mGralloc->getMapper()->freeBuffer(invalidHandle);
+    EXPECT_EQ(Error::BAD_BUFFER, error)
+            << "freeBuffer with invalid handle did not fail with BAD_BUFFER";
+    native_handle_delete(invalidHandle);
+
+    const native_handle_t* clonedBufferHandle;
+    ASSERT_NO_FATAL_FAILURE(clonedBufferHandle = mGralloc->allocate(mDummyDescriptorInfo, false));
+    error = mGralloc->getMapper()->freeBuffer(invalidHandle);
+    EXPECT_EQ(Error::BAD_BUFFER, error)
+            << "freeBuffer with un-imported handle did not fail with BAD_BUFFER";
+
+    mGralloc->freeBuffer(clonedBufferHandle);
+}
+
+/**
+ * Test IMapper::lock and IMapper::unlock.
+ */
+TEST_F(GraphicsMapperHidlTest, LockUnlockBasic) {
+    const auto& info = mDummyDescriptorInfo;
+
+    const native_handle_t* bufferHandle;
+    uint32_t stride;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(info, true, &stride));
+
+    // lock buffer for writing
+    const IMapper::Rect region{0, 0, static_cast<int32_t>(info.width),
+                               static_cast<int32_t>(info.height)};
+    int fence = -1;
+    uint8_t* data;
+    int32_t bytesPerPixel = -1;
+    int32_t bytesPerStride = -1;
+    ASSERT_NO_FATAL_FAILURE(
+            data = static_cast<uint8_t*>(mGralloc->lock(bufferHandle, info.usage, region, fence,
+                                                        &bytesPerPixel, &bytesPerStride)));
+
+    // Valid return values are -1 for unsupported or the number bytes for supported which is >=0
+    EXPECT_GT(bytesPerPixel, -1);
+    EXPECT_GT(bytesPerStride, -1);
+
+    // RGBA_8888
+    size_t strideInBytes = stride * 4;
+    size_t writeInBytes = info.width * 4;
+
+    for (uint32_t y = 0; y < info.height; y++) {
+        memset(data, y, writeInBytes);
+        data += strideInBytes;
+    }
+
+    ASSERT_NO_FATAL_FAILURE(fence = mGralloc->unlock(bufferHandle));
+
+    bytesPerPixel = -1;
+    bytesPerStride = -1;
+
+    // lock again for reading
+    ASSERT_NO_FATAL_FAILURE(
+            data = static_cast<uint8_t*>(mGralloc->lock(bufferHandle, info.usage, region, fence,
+                                                        &bytesPerPixel, &bytesPerStride)));
+    for (uint32_t y = 0; y < info.height; y++) {
+        for (size_t i = 0; i < writeInBytes; i++) {
+            EXPECT_EQ(static_cast<uint8_t>(y), data[i]);
+        }
+        data += strideInBytes;
+    }
+
+    EXPECT_GT(bytesPerPixel, -1);
+    EXPECT_GT(bytesPerStride, -1);
+
+    ASSERT_NO_FATAL_FAILURE(fence = mGralloc->unlock(bufferHandle));
+    if (fence >= 0) {
+        close(fence);
+    }
+}
+
+/**
+ * Test IMapper::lockYCbCr.  This locks a YV12 buffer, and makes sure we can
+ * write to and read from it.
+ */
+TEST_F(GraphicsMapperHidlTest, LockYCbCrBasic) {
+    auto info = mDummyDescriptorInfo;
+    info.format = PixelFormat::YV12;
+
+    const native_handle_t* bufferHandle;
+    uint32_t stride;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(info, true, &stride));
+
+    // lock buffer for writing
+    const IMapper::Rect region{0, 0, static_cast<int32_t>(info.width),
+                               static_cast<int32_t>(info.height)};
+    int fence = -1;
+    YCbCrLayout layout;
+    ASSERT_NO_FATAL_FAILURE(layout = mGralloc->lockYCbCr(bufferHandle, info.usage, region, fence));
+
+    auto yData = static_cast<uint8_t*>(layout.y);
+    auto cbData = static_cast<uint8_t*>(layout.cb);
+    auto crData = static_cast<uint8_t*>(layout.cr);
+    for (uint32_t y = 0; y < info.height; y++) {
+        for (uint32_t x = 0; x < info.width; x++) {
+            auto val = static_cast<uint8_t>(info.height * y + x);
+
+            yData[layout.yStride * y + x] = val;
+            if (y % 2 == 0 && x % 2 == 0) {
+                cbData[layout.cStride * y / 2 + x / 2] = val;
+                crData[layout.cStride * y / 2 + x / 2] = val;
+            }
+        }
+    }
+
+    ASSERT_NO_FATAL_FAILURE(fence = mGralloc->unlock(bufferHandle));
+
+    // lock again for reading
+    ASSERT_NO_FATAL_FAILURE(layout = mGralloc->lockYCbCr(bufferHandle, info.usage, region, fence));
+
+    yData = static_cast<uint8_t*>(layout.y);
+    cbData = static_cast<uint8_t*>(layout.cb);
+    crData = static_cast<uint8_t*>(layout.cr);
+    for (uint32_t y = 0; y < info.height; y++) {
+        for (uint32_t x = 0; x < info.width; x++) {
+            auto val = static_cast<uint8_t>(info.height * y + x);
+
+            EXPECT_EQ(val, yData[layout.yStride * y + x]);
+            if (y % 2 == 0 && x % 2 == 0) {
+                EXPECT_EQ(val, cbData[layout.cStride * y / 2 + x / 2]);
+                EXPECT_EQ(val, crData[layout.cStride * y / 2 + x / 2]);
+            }
+        }
+    }
+
+    ASSERT_NO_FATAL_FAILURE(fence = mGralloc->unlock(bufferHandle));
+    if (fence >= 0) {
+        close(fence);
+    }
+}
+
+/**
+ * Test IMapper::unlock with bad access region
+ */
+TEST_F(GraphicsMapperHidlTest, LockBadAccessRegion) {
+    const auto& info = mDummyDescriptorInfo;
+
+    const native_handle_t* bufferHandle;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(info, true));
+
+    const IMapper::Rect accessRegion{0, 0, static_cast<int32_t>(info.width * 2),
+                                     static_cast<int32_t>(info.height * 2)};
+    int acquireFence = -1;
+
+    NATIVE_HANDLE_DECLARE_STORAGE(acquireFenceStorage, 1, 0);
+    hidl_handle acquireFenceHandle;
+    if (acquireFence >= 0) {
+        auto h = native_handle_init(acquireFenceStorage, 1, 0);
+        h->data[0] = acquireFence;
+        acquireFenceHandle = h;
+    }
+
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+    mGralloc->getMapper()->lock(buffer, info.usage, accessRegion, acquireFenceHandle,
+                                [&](const auto& tmpError, const auto& /*tmpData*/,
+                                    int32_t /*tmpBytesPerPixel*/, int32_t /*tmpBytesPerStride*/) {
+                                    EXPECT_EQ(Error::BAD_VALUE, tmpError)
+                                            << "locking with a bad access region should fail";
+                                });
+
+    if (::testing::Test::HasFailure()) {
+        if (acquireFence >= 0) {
+            close(acquireFence);
+        }
+
+        int releaseFence = -1;
+        ASSERT_NO_FATAL_FAILURE(releaseFence = mGralloc->unlock(bufferHandle));
+
+        if (releaseFence >= 0) {
+            close(releaseFence);
+        }
+    }
+}
+
+/**
+ * Test IMapper::unlock with invalid buffers.
+ */
+TEST_F(GraphicsMapperHidlTest, UnlockNegative) {
+    native_handle_t* invalidHandle = nullptr;
+    mGralloc->getMapper()->unlock(invalidHandle, [&](const auto& tmpError, const auto&) {
+        EXPECT_EQ(Error::BAD_BUFFER, tmpError)
+                << "unlock with nullptr did not fail with BAD_BUFFER";
+    });
+
+    invalidHandle = native_handle_create(0, 0);
+    mGralloc->getMapper()->unlock(invalidHandle, [&](const auto& tmpError, const auto&) {
+        EXPECT_EQ(Error::BAD_BUFFER, tmpError)
+                << "unlock with invalid handle did not fail with BAD_BUFFER";
+    });
+    native_handle_delete(invalidHandle);
+
+    ASSERT_NO_FATAL_FAILURE(invalidHandle = const_cast<native_handle_t*>(
+                                    mGralloc->allocate(mDummyDescriptorInfo, false)));
+    mGralloc->getMapper()->unlock(invalidHandle, [&](const auto& tmpError, const auto&) {
+        EXPECT_EQ(Error::BAD_BUFFER, tmpError)
+                << "unlock with un-imported handle did not fail with BAD_BUFFER";
+    });
+    mGralloc->freeBuffer(invalidHandle);
+
+// disabled as it fails on many existing drivers
+#if 0
+  ASSERT_NO_FATAL_FAILURE(invalidHandle = const_cast<native_handle_t*>(
+                              mGralloc->allocate(mDummyDescriptorInfo, true)));
+  mGralloc->getMapper()->unlock(
+      invalidHandle, [&](const auto& tmpError, const auto&) {
+        EXPECT_EQ(Error::BAD_BUFFER, tmpError)
+            << "unlock with unlocked handle did not fail with BAD_BUFFER";
+      });
+  mGralloc->freeBuffer(invalidHandle);
+#endif
+}
+
+/**
+ * Test IMapper::isSupported with required format RGBA_8888
+ */
+TEST_F(GraphicsMapperHidlTest, IsSupportedRGBA8888) {
+    const auto& info = mDummyDescriptorInfo;
+    bool supported = false;
+
+    ASSERT_NO_FATAL_FAILURE(supported = mGralloc->isSupported(info));
+    ASSERT_TRUE(supported);
+}
+
+/**
+ * Test IMapper::isSupported with required format YV12
+ */
+TEST_F(GraphicsMapperHidlTest, IsSupportedYV12) {
+    auto info = mDummyDescriptorInfo;
+    info.format = PixelFormat::YV12;
+    bool supported = false;
+
+    ASSERT_NO_FATAL_FAILURE(supported = mGralloc->isSupported(info));
+    ASSERT_TRUE(supported);
+}
+
+/**
+ * Test IMapper::isSupported with optional format Y16
+ */
+TEST_F(GraphicsMapperHidlTest, IsSupportedY16) {
+    auto info = mDummyDescriptorInfo;
+    info.format = PixelFormat::Y16;
+    bool supported = false;
+
+    ASSERT_NO_FATAL_FAILURE(supported = mGralloc->isSupported(info));
+}
+
+}  // namespace
+}  // namespace vts
+}  // namespace V4_0
+}  // namespace mapper
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
+
+int main(int argc, char** argv) {
+    using android::hardware::graphics::mapper::V4_0::vts::GraphicsMapperHidlEnvironment;
+    ::testing::AddGlobalTestEnvironment(GraphicsMapperHidlEnvironment::Instance());
+    ::testing::InitGoogleTest(&argc, argv);
+    GraphicsMapperHidlEnvironment::Instance()->init(&argc, argv);
+    int status = RUN_ALL_TESTS();
+    LOG(INFO) << "Test result = " << status;
+    return status;
+}
diff --git a/keymaster/4.0/support/Keymaster.cpp b/keymaster/4.0/support/Keymaster.cpp
index 1eb9a68..f20f951 100644
--- a/keymaster/4.0/support/Keymaster.cpp
+++ b/keymaster/4.0/support/Keymaster.cpp
@@ -80,8 +80,7 @@
 }
 
 template <typename Wrapper>
-std::vector<std::unique_ptr<Keymaster>> enumerateDevices(
-    const sp<IServiceManager>& serviceManager) {
+Keymaster::KeymasterSet enumerateDevices(const sp<IServiceManager>& serviceManager) {
     Keymaster::KeymasterSet result;
 
     bool foundDefault = false;
@@ -92,7 +91,7 @@
             auto device = Wrapper::WrappedIKeymasterDevice::getService(name);
             CHECK(device) << "Failed to get service for " << descriptor << " with interface name "
                           << name;
-            result.push_back(std::unique_ptr<Keymaster>(new Wrapper(device, name)));
+            result.push_back(new Wrapper(device, name));
         }
     });
 
@@ -100,7 +99,7 @@
         // "default" wasn't provided by listManifestByInterface.  Maybe there's a passthrough
         // implementation.
         auto device = Wrapper::WrappedIKeymasterDevice::getService("default");
-        if (device) result.push_back(std::unique_ptr<Keymaster>(new Wrapper(device, "default")));
+        if (device) result.push_back(new Wrapper(device, "default"));
     }
 
     return result;
diff --git a/keymaster/4.0/support/include/keymasterV4_0/Keymaster.h b/keymaster/4.0/support/include/keymasterV4_0/Keymaster.h
index 43a34b0..ad83f17 100644
--- a/keymaster/4.0/support/include/keymasterV4_0/Keymaster.h
+++ b/keymaster/4.0/support/include/keymasterV4_0/Keymaster.h
@@ -39,8 +39,8 @@
  * while still having to use only the latest interface.
  */
 class Keymaster : public IKeymasterDevice {
-   public:
-    using KeymasterSet = std::vector<std::unique_ptr<Keymaster>>;
+  public:
+    using KeymasterSet = std::vector<android::sp<Keymaster>>;
 
     Keymaster(const hidl_string& descriptor, const hidl_string& instanceName)
         : descriptor_(descriptor), instanceName_(instanceName) {}
@@ -86,7 +86,7 @@
      */
     static void performHmacKeyAgreement(const KeymasterSet& keymasters);
 
-   private:
+  private:
     hidl_string descriptor_;
     hidl_string instanceName_;
 };
diff --git a/neuralnetworks/1.2/vts/functional/GeneratedTestHarness.cpp b/neuralnetworks/1.2/vts/functional/GeneratedTestHarness.cpp
index aacb385..c1bf494 100644
--- a/neuralnetworks/1.2/vts/functional/GeneratedTestHarness.cpp
+++ b/neuralnetworks/1.2/vts/functional/GeneratedTestHarness.cpp
@@ -58,8 +58,20 @@
 using V1_1::ExecutionPreference;
 using HidlToken = hidl_array<uint8_t, static_cast<uint32_t>(Constant::BYTE_SIZE_OF_CACHE_TOKEN)>;
 
+namespace {
+
+enum class Executor { ASYNC, SYNC, BURST };
+
 enum class OutputType { FULLY_SPECIFIED, UNSPECIFIED, INSUFFICIENT };
 
+struct TestConfig {
+    Executor executor;
+    MeasureTiming measureTiming;
+    OutputType outputType;
+};
+
+}  // namespace
+
 Model createModel(const TestModel& testModel) {
     // Model operands.
     hidl_vec<Operand> operands(testModel.operands.size());
@@ -194,31 +206,31 @@
     return android::nn::ExecutionBurstController::create(preparedModel,
                                                          std::chrono::microseconds{0});
 }
-enum class Executor { ASYNC, SYNC, BURST };
 
 void EvaluatePreparedModel(const sp<IPreparedModel>& preparedModel, const TestModel& testModel,
-                           Executor executor, MeasureTiming measure, OutputType outputType) {
+                           const TestConfig& testConfig) {
     // If output0 does not have size larger than one byte, we can not test with insufficient buffer.
-    if (outputType == OutputType::INSUFFICIENT && !isOutputSizeGreaterThanOne(testModel, 0)) {
+    if (testConfig.outputType == OutputType::INSUFFICIENT &&
+        !isOutputSizeGreaterThanOne(testModel, 0)) {
         return;
     }
 
     Request request = createRequest(testModel);
-    if (outputType == OutputType::INSUFFICIENT) {
+    if (testConfig.outputType == OutputType::INSUFFICIENT) {
         makeOutputInsufficientSize(/*outputIndex=*/0, &request);
     }
 
     ErrorStatus executionStatus;
     hidl_vec<OutputShape> outputShapes;
     Timing timing;
-    switch (executor) {
+    switch (testConfig.executor) {
         case Executor::ASYNC: {
             SCOPED_TRACE("asynchronous");
 
             // launch execution
             sp<ExecutionCallback> executionCallback = new ExecutionCallback();
-            Return<ErrorStatus> executionLaunchStatus =
-                    ExecutePreparedModel(preparedModel, request, measure, executionCallback);
+            Return<ErrorStatus> executionLaunchStatus = ExecutePreparedModel(
+                    preparedModel, request, testConfig.measureTiming, executionCallback);
             ASSERT_TRUE(executionLaunchStatus.isOk());
             EXPECT_EQ(ErrorStatus::NONE, static_cast<ErrorStatus>(executionLaunchStatus));
 
@@ -234,8 +246,8 @@
             SCOPED_TRACE("synchronous");
 
             // execute
-            Return<ErrorStatus> executionReturnStatus =
-                    ExecutePreparedModel(preparedModel, request, measure, &outputShapes, &timing);
+            Return<ErrorStatus> executionReturnStatus = ExecutePreparedModel(
+                    preparedModel, request, testConfig.measureTiming, &outputShapes, &timing);
             ASSERT_TRUE(executionReturnStatus.isOk());
             executionStatus = static_cast<ErrorStatus>(executionReturnStatus);
 
@@ -258,14 +270,14 @@
             // execute burst
             int n;
             std::tie(n, outputShapes, timing, std::ignore) =
-                    controller->compute(request, measure, keys);
+                    controller->compute(request, testConfig.measureTiming, keys);
             executionStatus = nn::convertResultCodeToErrorStatus(n);
 
             break;
         }
     }
 
-    if (outputType != OutputType::FULLY_SPECIFIED &&
+    if (testConfig.outputType != OutputType::FULLY_SPECIFIED &&
         executionStatus == ErrorStatus::GENERAL_FAILURE) {
         LOG(INFO) << "NN VTS: Early termination of test because vendor service cannot "
                      "execute model that it does not support.";
@@ -274,7 +286,7 @@
                   << std::endl;
         GTEST_SKIP();
     }
-    if (measure == MeasureTiming::NO) {
+    if (testConfig.measureTiming == MeasureTiming::NO) {
         EXPECT_EQ(UINT64_MAX, timing.timeOnDevice);
         EXPECT_EQ(UINT64_MAX, timing.timeInDriver);
     } else {
@@ -283,7 +295,7 @@
         }
     }
 
-    switch (outputType) {
+    switch (testConfig.outputType) {
         case OutputType::FULLY_SPECIFIED:
             // If the model output operands are fully specified, outputShapes must be either
             // either empty, or have the same number of elements as the number of outputs.
@@ -321,44 +333,29 @@
 
 void EvaluatePreparedModel(const sp<IPreparedModel>& preparedModel, const TestModel& testModel,
                            bool testDynamicOutputShape) {
+    std::initializer_list<OutputType> outputTypesList;
+    std::initializer_list<MeasureTiming> measureTimingList;
+    std::initializer_list<Executor> executorList;
+
     if (testDynamicOutputShape) {
-        EvaluatePreparedModel(preparedModel, testModel, Executor::ASYNC, MeasureTiming::NO,
-                              OutputType::UNSPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::SYNC, MeasureTiming::NO,
-                              OutputType::UNSPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::BURST, MeasureTiming::NO,
-                              OutputType::UNSPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::ASYNC, MeasureTiming::YES,
-                              OutputType::UNSPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::SYNC, MeasureTiming::YES,
-                              OutputType::UNSPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::BURST, MeasureTiming::YES,
-                              OutputType::UNSPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::ASYNC, MeasureTiming::NO,
-                              OutputType::INSUFFICIENT);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::SYNC, MeasureTiming::NO,
-                              OutputType::INSUFFICIENT);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::BURST, MeasureTiming::NO,
-                              OutputType::INSUFFICIENT);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::ASYNC, MeasureTiming::YES,
-                              OutputType::INSUFFICIENT);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::SYNC, MeasureTiming::YES,
-                              OutputType::INSUFFICIENT);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::BURST, MeasureTiming::YES,
-                              OutputType::INSUFFICIENT);
+        outputTypesList = {OutputType::UNSPECIFIED, OutputType::INSUFFICIENT};
+        measureTimingList = {MeasureTiming::NO, MeasureTiming::YES};
+        executorList = {Executor::ASYNC, Executor::SYNC, Executor::BURST};
     } else {
-        EvaluatePreparedModel(preparedModel, testModel, Executor::ASYNC, MeasureTiming::NO,
-                              OutputType::FULLY_SPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::SYNC, MeasureTiming::NO,
-                              OutputType::FULLY_SPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::BURST, MeasureTiming::NO,
-                              OutputType::FULLY_SPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::ASYNC, MeasureTiming::YES,
-                              OutputType::FULLY_SPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::SYNC, MeasureTiming::YES,
-                              OutputType::FULLY_SPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::BURST, MeasureTiming::YES,
-                              OutputType::FULLY_SPECIFIED);
+        outputTypesList = {OutputType::FULLY_SPECIFIED};
+        measureTimingList = {MeasureTiming::NO, MeasureTiming::YES};
+        executorList = {Executor::ASYNC, Executor::SYNC, Executor::BURST};
+    }
+
+    for (const OutputType outputType : outputTypesList) {
+        for (const MeasureTiming measureTiming : measureTimingList) {
+            for (const Executor executor : executorList) {
+                const TestConfig testConfig = {.executor = executor,
+                                               .measureTiming = measureTiming,
+                                               .outputType = outputType};
+                EvaluatePreparedModel(preparedModel, testModel, testConfig);
+            }
+        }
     }
 }
 
diff --git a/neuralnetworks/1.2/vts/functional/ValidateModel.cpp b/neuralnetworks/1.2/vts/functional/ValidateModel.cpp
index a14b86b..30530be 100644
--- a/neuralnetworks/1.2/vts/functional/ValidateModel.cpp
+++ b/neuralnetworks/1.2/vts/functional/ValidateModel.cpp
@@ -216,7 +216,7 @@
         case OperandType::TENSOR_QUANT8_ASYMM:
             return {-1, 256};
         case OperandType::TENSOR_QUANT8_SYMM:
-          return {-129, -1, 1, 128};
+            return {-129, -1, 1, 128};
         case OperandType::TENSOR_QUANT16_ASYMM:
             return {-1, 65536};
         case OperandType::TENSOR_QUANT16_SYMM:
@@ -482,15 +482,15 @@
                 }
             }
         }
-        // BIDIRECTIONAL_SEQUENCE_LSTM and BIDIRECTIONAL_SEQUENCE_RNN can have
-        // either one or two outputs depending on their mergeOutputs parameter.
+        // BIDIRECTIONAL_SEQUENCE_LSTM and BIDIRECTIONAL_SEQUENCE_RNN can have either one or two
+        // outputs depending on their mergeOutputs parameter.
         if (operation.type == OperationType::BIDIRECTIONAL_SEQUENCE_LSTM ||
             operation.type == OperationType::BIDIRECTIONAL_SEQUENCE_RNN) {
-          for (const size_t outOprand : operation.outputs) {
-            if (operand == outOprand) {
-              return true;
+            for (const size_t outOprand : operation.outputs) {
+                if (operand == outOprand) {
+                    return true;
+                }
             }
-          }
         }
     }
     return false;
diff --git a/neuralnetworks/1.3/Android.bp b/neuralnetworks/1.3/Android.bp
index 0615ec6..0b07a58 100644
--- a/neuralnetworks/1.3/Android.bp
+++ b/neuralnetworks/1.3/Android.bp
@@ -9,6 +9,8 @@
     srcs: [
         "types.hal",
         "IDevice.hal",
+        "IPreparedModel.hal",
+        "IPreparedModelCallback.hal",
     ],
     interfaces: [
         "android.hardware.neuralnetworks@1.0",
diff --git a/neuralnetworks/1.3/IDevice.hal b/neuralnetworks/1.3/IDevice.hal
index ee36fb4..1295d6a 100644
--- a/neuralnetworks/1.3/IDevice.hal
+++ b/neuralnetworks/1.3/IDevice.hal
@@ -22,7 +22,7 @@
 import @1.2::DeviceType;
 import @1.2::Extension;
 import @1.2::IDevice;
-import @1.2::IPreparedModelCallback;
+import IPreparedModelCallback;
 
 /**
  * This interface represents a device driver.
@@ -134,18 +134,18 @@
      *     not provided, or match the numModelCache returned from
      *     getNumberOfCacheFilesNeeded. The cache handles will be provided in
      *     the same order when retrieving the preparedModel from cache files
-     *     with prepareModelFromCache.
+     *     with prepareModelFromCache_1_3.
      * @param dataCache A vector of handles with each entry holding exactly one
      *     cache file descriptor for the constants' cache. The length of the
      *     vector must either be 0 indicating that caching information is not
      *     provided, or match the numDataCache returned from
      *     getNumberOfCacheFilesNeeded. The cache handles will be provided in
      *     the same order when retrieving the preparedModel from cache files
-     *     with prepareModelFromCache.
+     *     with prepareModelFromCache_1_3.
      * @param token A caching token of length Constant::BYTE_SIZE_OF_CACHE_TOKEN
      *     identifying the prepared model. The same token will be provided when
      *     retrieving the prepared model from the cache files with
-     *     prepareModelFromCache.  Tokens should be chosen to have a low rate of
+     *     prepareModelFromCache_1_3.  Tokens should be chosen to have a low rate of
      *     collision for a particular application. The driver cannot detect a
      *     collision; a collision will result in a failed execution or in a
      *     successful execution that produces incorrect output values. If both
@@ -168,4 +168,83 @@
                      uint8_t[Constant:BYTE_SIZE_OF_CACHE_TOKEN] token,
                      IPreparedModelCallback callback)
         generates (ErrorStatus status);
+
+    /**
+     * Creates a prepared model from cache files for execution.
+     *
+     * prepareModelFromCache_1_3 is used to retrieve a prepared model directly from
+     * cache files to avoid slow model compilation time. There are
+     * two types of cache file handles provided to the driver: model cache
+     * and data cache. For more information on the two types of cache handles,
+     * refer to getNumberOfCacheFilesNeeded.
+     *
+     * The file descriptors must be opened with read and write permission. A file may
+     * have any size, and the corresponding file descriptor may have any offset. The
+     * driver must truncate a file to zero size before writing to that file. The file
+     * descriptors may be closed by the client once the asynchronous preparation has
+     * finished. The driver must dup a file descriptor if it wants to get access to
+     * the cache file later.
+     *
+     * The model is prepared asynchronously with respect to the caller. The
+     * prepareModelFromCache_1_3 function must verify the inputs to the
+     * prepareModelFromCache_1_3 function are correct, and that the security-sensitive
+     * cache has not been modified since it was last written by the driver.
+     * If there is an error, or if compilation caching is not supported, or if the
+     * security-sensitive cache has been modified, prepareModelFromCache_1_3 must
+     * immediately invoke the callback with the appropriate ErrorStatus value and
+     * nullptr for the IPreparedModel, then return with the same ErrorStatus. If
+     * the inputs to the prepareModelFromCache_1_3 function are valid, the security-sensitive
+     * cache is not modified, and there is no error, prepareModelFromCache_1_3 must launch an
+     * asynchronous task to prepare the model in the background, and immediately return
+     * from prepareModelFromCache_1_3 with ErrorStatus::NONE. If the asynchronous task
+     * fails to launch, prepareModelFromCache_1_3 must immediately invoke the callback
+     * with ErrorStatus::GENERAL_FAILURE and nullptr for the IPreparedModel, then
+     * return with ErrorStatus::GENERAL_FAILURE.
+     *
+     * When the asynchronous task has finished preparing the model, it must
+     * immediately invoke the callback function provided as an input to
+     * prepareModelFromCache_1_3. If the model was prepared successfully, the
+     * callback object must be invoked with an error status of ErrorStatus::NONE
+     * and the produced IPreparedModel object. If an error occurred preparing
+     * the model, the callback object must be invoked with the appropriate
+     * ErrorStatus value and nullptr for the IPreparedModel.
+     *
+     * The only information that may be unknown to the model at this stage is
+     * the shape of the tensors, which may only be known at execution time. As
+     * such, some driver services may return partially prepared models, where
+     * the prepared model may only be finished when it is paired with a set of
+     * inputs to the model. Note that the same prepared model object may be
+     * used with different shapes of inputs on different (possibly concurrent)
+     * executions.
+     *
+     * @param modelCache A vector of handles with each entry holding exactly one
+     *     cache file descriptor for the security-sensitive cache. The length of
+     *     the vector must match the numModelCache returned from getNumberOfCacheFilesNeeded.
+     *     The cache handles will be provided in the same order as with prepareModel_1_3.
+     * @param dataCache A vector of handles with each entry holding exactly one
+     *     cache file descriptor for the constants' cache. The length of the vector
+     *     must match the numDataCache returned from getNumberOfCacheFilesNeeded.
+     *     The cache handles will be provided in the same order as with prepareModel_1_3.
+     * @param token A caching token of length Constant::BYTE_SIZE_OF_CACHE_TOKEN
+     *     identifying the prepared model. It is the same token provided when saving
+     *     the cache files with prepareModel_1_3. Tokens should be chosen
+     *     to have a low rate of collision for a particular application. The driver
+     *     cannot detect a collision; a collision will result in a failed execution
+     *     or in a successful execution that produces incorrect output values.
+     * @param callback A callback object used to return the error status of
+     *     preparing the model for execution and the prepared model if
+     *     successful, nullptr otherwise. The callback object's notify function
+     *     must be called exactly once, even if the model could not be prepared.
+     * @return status Error status of launching a task which prepares the model
+     *     in the background; must be:
+     *     - NONE if preparation task is successfully launched
+     *     - DEVICE_UNAVAILABLE if driver is offline or busy
+     *     - GENERAL_FAILURE if caching is not supported or if there is an
+     *       unspecified error
+     *     - INVALID_ARGUMENT if one of the input arguments is invalid
+     */
+    prepareModelFromCache_1_3(vec<handle> modelCache, vec<handle> dataCache,
+                              uint8_t[Constant:BYTE_SIZE_OF_CACHE_TOKEN] token,
+                              IPreparedModelCallback callback)
+            generates (ErrorStatus status);
 };
diff --git a/neuralnetworks/1.3/IPreparedModel.hal b/neuralnetworks/1.3/IPreparedModel.hal
new file mode 100644
index 0000000..c04809f
--- /dev/null
+++ b/neuralnetworks/1.3/IPreparedModel.hal
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.neuralnetworks@1.3;
+
+import @1.0::ErrorStatus;
+import @1.0::Request;
+import @1.2::MeasureTiming;
+import @1.2::IExecutionCallback;
+import @1.2::IPreparedModel;
+
+/**
+ * IPreparedModel describes a model that has been prepared for execution and
+ * is used to launch executions.
+ */
+interface IPreparedModel extends @1.2::IPreparedModel {
+    /**
+     * Launches an asynchronous execution on a prepared model.
+     *
+     * The execution is performed asynchronously with respect to the caller.
+     * execute_1_3 must verify the inputs to the function are correct. If there is
+     * an error, execute_1_3 must immediately invoke the callback with the
+     * appropriate ErrorStatus value, then return with the same ErrorStatus. If
+     * the inputs to the function are valid and there is no error, execute_1_3 must
+     * launch an asynchronous task to perform the execution in the background,
+     * and immediately return with ErrorStatus::NONE. If the asynchronous task
+     * fails to launch, execute_1_3 must immediately invoke the callback with
+     * ErrorStatus::GENERAL_FAILURE, then return with
+     * ErrorStatus::GENERAL_FAILURE.
+     *
+     * When the asynchronous task has finished its execution, it must
+     * immediately invoke the callback object provided as an input to the
+     * execute_1_3 function. This callback must be provided with the ErrorStatus of
+     * the execution.
+     *
+     * If the launch is successful, the caller must not change the content of
+     * any data object referenced by 'request' (described by the
+     * {@link @1.0::DataLocation} of a {@link @1.0::RequestArgument}) until the
+     * asynchronous task has invoked the callback object. The asynchronous task
+     * must not change the content of any of the data objects corresponding to
+     * 'request' inputs.
+     *
+     * If the prepared model was prepared from a model wherein all tensor
+     * operands have fully specified dimensions, and the inputs to the function
+     * are valid, then:
+     * - the execution should launch successfully (ErrorStatus::NONE): There
+     *   must be no failure unless the device itself is in a bad state.
+     * - if at execution time every operation's input operands have legal
+     *   values, the execution should complete successfully (ErrorStatus::NONE):
+     *   There must be no failure unless the device itself is in a bad state.
+     *
+     * Any number of calls to the execute, execute_1_2, execute_1_3, and executeSynchronously
+     * functions, in any combination, may be made concurrently, even on the same
+     * IPreparedModel object.
+     *
+     * @param request The input and output information on which the prepared
+     *                model is to be executed.
+     * @param measure Specifies whether or not to measure duration of the execution.
+     *                The duration runs from the time the driver sees the call
+     *                to the execute_1_3 function to the time the driver invokes
+     *                the callback.
+     * @param callback A callback object used to return the error status of
+     *                 the execution. The callback object's notify function must
+     *                 be called exactly once, even if the execution was
+     *                 unsuccessful.
+     * @return status Error status of the call, must be:
+     *                - NONE if task is successfully launched
+     *                - DEVICE_UNAVAILABLE if driver is offline or busy
+     *                - GENERAL_FAILURE if there is an unspecified error
+     *                - OUTPUT_INSUFFICIENT_SIZE if provided output buffer is
+     *                  not large enough to store the resultant values
+     *                - INVALID_ARGUMENT if one of the input arguments is
+     *                  invalid
+     */
+    execute_1_3(Request request, MeasureTiming measure, IExecutionCallback callback)
+        generates (ErrorStatus status);
+};
diff --git a/neuralnetworks/1.3/IPreparedModelCallback.hal b/neuralnetworks/1.3/IPreparedModelCallback.hal
new file mode 100644
index 0000000..ff295a2
--- /dev/null
+++ b/neuralnetworks/1.3/IPreparedModelCallback.hal
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.neuralnetworks@1.3;
+
+import @1.0::ErrorStatus;
+import @1.2::IPreparedModelCallback;
+import IPreparedModel;
+
+/**
+ * IPreparedModelCallback must be used to return a prepared model produced by an
+ * asynchronous task launched from IDevice::prepareModel.
+ */
+interface IPreparedModelCallback extends @1.2::IPreparedModelCallback {
+
+    /**
+     * There are three notify methods declared for the IPreparedModelCallback
+     * interface: notify_1_3, notify_1_2, and notify. One of the three
+     * notify methods must be invoked immediately after the asynchronous
+     * task holding this callback has finished preparing the model. If the model was
+     * successfully prepared, one of the notify methods must be invoked with
+     * ErrorStatus::NONE and the prepared model. If the model was not able to be
+     * successfully prepared, one of the notify methods must be invoked with the
+     * appropriate ErrorStatus and nullptr as the IPreparedModel. If the asynchronous
+     * task holding this callback fails to launch or if the model provided to
+     * IDevice::prepareModel is invalid, one of the notify methods must be invoked
+     * with the appropriate error as well as nullptr for the IPreparedModel.
+     *
+     * @param status Error status returned from the asynchronous model
+     *               preparation task; must be:
+     *               - NONE if the asynchronous task successfully prepared the
+     *                 model
+     *               - DEVICE_UNAVAILABLE if driver is offline or busy
+     *               - GENERAL_FAILURE if the asynchronous task resulted in an
+     *                 unspecified error
+     *               - INVALID_ARGUMENT if one of the input arguments to
+     *                 prepareModel is invalid
+     * @param preparedModel A model that has been asynchronously prepared for
+     *                      execution. If the model was unable to be prepared
+     *                      due to an error, nullptr must be passed in place of
+     *                      the IPreparedModel object.
+     */
+    oneway notify_1_3(ErrorStatus status, IPreparedModel preparedModel);
+};
diff --git a/neuralnetworks/1.3/types.hal b/neuralnetworks/1.3/types.hal
index 86ab287..7df14b1 100644
--- a/neuralnetworks/1.3/types.hal
+++ b/neuralnetworks/1.3/types.hal
@@ -73,6 +73,4500 @@
     BASE_MAX        = 0xFFFF,
 };
 
+/**
+ * Operation types.
+ *
+ * The type of an operation in a model.
+ */
+enum OperationType : int32_t {
+
+    /**
+     * Adds two tensors, element-wise.
+     *
+     * Takes two input tensors of identical {@link OperandType} and compatible
+     * dimensions. The output is the sum of both input tensors, optionally
+     * modified by an activation function.
+     *
+     * Two dimensions are compatible when:
+     *     1. they are equal, or
+     *     2. one of them is 1
+     *
+     * The size of the output is the maximum size along each dimension of the
+     * input operands. It starts with the trailing dimensions, and works its
+     * way forward.
+     *
+     * Example:
+     *
+     *     input1.dimension = {4, 1, 2}
+     *     input2.dimension = {5, 4, 3, 1}
+     *     output.dimension = {5, 4, 3, 2}
+     *
+     * Since HAL version 1.2, generic zero-sized input tensor is supported. Zero
+     * dimension is only compatible with 0 or 1. The size of the output
+     * dimension is zero if either of corresponding input dimension is zero.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: A tensor.
+     * * 1: A tensor of the same {@link OperandType}, and compatible dimensions
+     *      as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scales and zeroPoint can be different from input0 scale and zeroPoint.
+     * * 2: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     *
+     * Outputs:
+     * * 0: The sum, a tensor of the same {@link OperandType} as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint can be different from inputs' scale and zeroPoint.
+     */
+    ADD = @1.2::OperationType:ADD,
+
+    /**
+     * Performs a 2-D average pooling operation.
+     *
+     * The output dimensions are functions of the filter dimensions, stride, and
+     * padding.
+     *
+     * The values in the output tensor are computed as:
+     *
+     *     output[b, i, j, channel] =
+     *         sum_{di, dj}(
+     *             input[b, strides[1] * i + di, strides[2] * j + dj, channel]
+     *         ) / sum(1)
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     * NCHW is supported since HAL version 1.2.
+     *
+     * Both explicit padding and implicit padding are supported.
+     *
+     * Inputs (explicit padding):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth], specifying
+     *      the input.
+     *      Since HAL version 1.2, zero batches is supported for this tensor.
+     * * 1: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the left, in the ‘width’ dimension.
+     * * 2: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the right, in the ‘width’ dimension.
+     * * 3: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the top, in the ‘height’ dimension.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the bottom, in the ‘height’ dimension.
+     * * 5: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘width’ dimension.
+     * * 6: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘height’ dimension.
+     * * 7: An {@link OperandType::INT32} scalar, specifying the filter
+     *      width.
+     * * 8: An {@link OperandType::INT32} scalar, specifying the filter
+     *      height.
+     * * 9: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     * * 10: An optional {@link OperandType::BOOL} scalar, default to false.
+     *       Set to true to specify NCHW data layout for input0 and output0.
+     *       Available since HAL version 1.2.
+     *
+     * Inputs (implicit padding):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth], specifying
+     *      the input.
+     *      Since HAL version 1.2, zero batches is supported for this tensor.
+     * * 1: An {@link OperandType::INT32} scalar, specifying the implicit
+     *      padding scheme, has to be one of the
+     *      following values: {0 (NONE), 1 (SAME), 2 (VALID)}.
+     * * 2: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘width’ dimension.
+     * * 3: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘height’ dimension.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the filter
+     *      width.
+     * * 5: An {@link OperandType::INT32} scalar, specifying the filter
+     *      height.
+     * * 6: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     * * 7: An optional {@link OperandType::BOOL} scalar, default to false.
+     *      Set to true to specify NCHW data layout for input0 and output0.
+     *      Available since HAL version 1.2.
+     *
+     * Outputs:
+     * * 0: The output 4-D tensor, of shape
+     *      [batches, out_height, out_width, depth].
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    AVERAGE_POOL_2D = @1.2::OperationType:AVERAGE_POOL_2D,
+
+    /**
+     * Concatenates the input tensors along the given dimension.
+     *
+     * The input tensors must have identical {@link OperandType} and the same
+     * dimensions except the dimension along the concatenation axis.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *   (full support since HAL version 1.2, see the input section)
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0 ~ n-1: The list of n input tensors, of shape
+     *            [D0, D1, ..., Daxis(i), ..., Dm].
+     *            Before HAL version 1.2, all input tensors of
+     *            {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *            must have the same scale and zeroPoint as the output tensor.
+     *            Since HAL version 1.2, zero-sized tensors are supported.
+     * * n: An {@link OperandType::INT32} scalar, specifying the
+     *      concatenation axis.
+     *
+     * Outputs:
+     * * 0: The output, a tensor of the same {@link OperandType} as the input
+     *      tensors. The output shape is [D0, D1, ..., sum(Daxis(i)), ..., Dm].
+     *      Since HAL version 1.2, for a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint values can be different from
+     *      input tensors. Before HAL version 1.2 they have to be the same as for the input tensors.
+     */
+    CONCATENATION = @1.2::OperationType:CONCATENATION,
+
+    /**
+     * Performs a 2-D convolution operation.
+     *
+     * The CONV_2D op sweeps a 2-D filter that can mix channels together over a
+     * batch of images, applying the filter to each window of each image of the
+     * appropriate size.
+     *
+     * The output dimensions are functions of the filter dimensions, stride, and
+     * padding.
+     *
+     * The values in the output tensor are computed as:
+     *
+     *     output[b, i, j, channel] =
+     *         sum_{di, dj, k} (
+     *             input[b, strides[1] * i + di, strides[2] * j + dj, k] *
+     *             filter[channel, di, dj, k]
+     *         ) + bias[channel]
+     *
+     * Supported tensor {@link OperandType} configurations:
+     * * 32 bit floating point:
+     * * * {@link OperandType::TENSOR_FLOAT32} for input, filter, output, and bias.
+     *
+     * * Quantized:
+     * * * {@link OperandType::TENSOR_QUANT8_ASYMM} for input, filter, and output.
+     * * * {@link OperandType::TENSOR_INT32} for bias (with scale set to
+     * * * input.scale * filter.scale).
+     *
+     * Available since HAL version 1.2:
+     * * 16 bit floating point:
+     * * * {@link OperandType::TENSOR_FLOAT16} for input, filter, output, and bias.
+     *
+     * * Quantized with symmetric per channel quantization for the filter:
+     * * * {@link OperandType::TENSOR_QUANT8_ASYMM} for input, and output.
+     * * * {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL} for filter.
+     * * * {@link OperandType::TENSOR_INT32} for bias (scale set to 0.0,
+     * * * each value scaling is separate and equal to input.scale * filter.scales[channel]).
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     * NCHW is supported since HAL version 1.2.
+     *
+     * Both explicit padding and implicit padding are supported.
+     *
+     * Inputs (explicit padding):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth_in],
+     *      specifying the input.
+     *      Since HAL version 1.2, zero batches is supported for this tensor.
+     * * 1: A 4-D tensor, of shape
+     *      [depth_out, filter_height, filter_width, depth_in], specifying the
+     *      filter.
+     *      For tensor of type {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL}
+     *      the channel dimension (SymmPerChannelQuantParams::channelDim)
+     *      must be set to 0.
+     * * 2: A 1-D tensor, of shape [depth_out], specifying the bias. For input
+     *      tensor of type {@link OperandType::TENSOR_FLOAT32}
+     *      or {@link OperandType::TENSOR_FLOAT16} the bias must be of the same
+     *      type. For filter tensor of {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      the bias should be of {@link OperandType::TENSOR_INT32}, with zeroPoint
+     *      of 0 and bias_scale == input_scale * filter_scale.
+     *      For filter tensor of {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL},
+     *      the bias should be of {@link OperandType::TENSOR_INT32}, with zeroPoint of 0
+     *      and bias_scale of 0. The actual scale of each value 'i' is equal to
+     *      bias_scale[i] = input_scale * filter_scale[i].
+     * * 3: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the left, in the ‘width’ dimension.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the right, in the ‘width’ dimension.
+     * * 5: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the top, in the ‘height’ dimension.
+     * * 6: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the bottom, in the ‘height’ dimension.
+     * * 7: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘width’ dimension.
+     * * 8: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘height’ dimension.
+     * * 9: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     * * 10: An optional {@link OperandType::BOOL} scalar, default to false.
+     *      Set to true to specify NCHW data layout for input0 and output0.
+     *      Available since HAL version 1.2.
+     * * 11: An optional {@link OperandType::INT32} scalar, specifying the dilation
+     *      factor for width. Defaults to 1. If set to k > 1, there will be k-1 skipped
+     *      cells between each filter element on width dimension. If this input is set,
+     *      input 12 (dilation factor for height) must be specified as well.
+     *      Available since HAL version 1.2.
+     * * 12: An optional {@link OperandType::INT32} scalar, specifying the dilation
+     *      factor for height. Defaults to 1. If set to k > 1, there will be k-1 skipped
+     *      cells between each filter element on height dimension. If this input is set,
+     *      input 11 (dilation factor for width) must be specified as well.
+     *      Available since HAL version 1.2.
+     *
+     * Inputs (implicit padding):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth_in],
+     *      specifying the input.
+     *      Since HAL version 1.2, zero batches is supported for this tensor.
+     * * 1: A 4-D tensor, of shape
+     *      [depth_out, filter_height, filter_width, depth_in], specifying the
+     *      filter.
+     *      For tensor of type {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL}
+     *      the channel dimension (SymmPerChannelQuantParams::channelDim)
+     *      must be set to 0.
+     * * 2: A 1-D tensor, of shape [depth_out], specifying the bias. For input
+     *      tensor of type {@link OperandType::TENSOR_FLOAT32}
+     *      or {@link OperandType::TENSOR_FLOAT16} the bias must be of the same
+     *      type. For filter tensor of {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      the bias should be of {@link OperandType::TENSOR_INT32}, with zeroPoint
+     *      of 0 and bias_scale == input_scale * filter_scale.
+     *      For filter tensor of {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL},
+     *      the bias should be of {@link OperandType::TENSOR_INT32}, with zeroPoint of 0
+     *      and bias_scale of 0. The actual scale of each value 'i' is equal to
+     *      bias_scale[i] = input_scale * filter_scale[i].
+     * * 3: An {@link OperandType::INT32} scalar, specifying the implicit
+     *      padding scheme, has to be one of the
+     *      following values: {0 (NONE), 1 (SAME), 2 (VALID)}.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘width’ dimension.
+     * * 5: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘height’ dimension.
+     * * 6: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     * * 7: An optional {@link OperandType::BOOL} scalar, default to false.
+     *      Set to true to specify NCHW data layout for input0 and output0.
+     *      Available since HAL version 1.2.
+     * * 8: An optional {@link OperandType::INT32} scalar, specifying the dilation
+     *      factor for width. Defaults to 1. If set to k > 1, there will be k-1 skipped
+     *      cells between each filter element on width dimension. If this input is set,
+     *      input 9 (dilation factor for height) must be specified as well.
+     *      Available since HAL version 1.2.
+     * * 9: An optional {@link OperandType::INT32} scalar, specifying the dilation
+     *      factor for height. Defaults to 1. If set to k > 1, there will be k-1 skipped
+     *      cells between each filter element on height dimension. If this input is set,
+     *      input 8 (dilation factor for width) must be specified as well.
+     *      Available since HAL version 1.2.
+     *
+     * Outputs:
+     * * 0: The output 4-D tensor, of shape
+     *      [batches, out_height, out_width, depth_out].
+     *      Before HAL version 1.2, for output tensor of {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      the following condition must be satisfied: output_scale > input_scale * filter_scale
+     */
+    CONV_2D = @1.2::OperationType:CONV_2D,
+
+    /**
+     * Performs a depthwise 2-D convolution operation.
+     *
+     * Given an input tensor of shape [batches, height, width, depth_in] and a
+     * filter tensor of shape [1, filter_height, filter_width, depth_out]
+     * containing depth_out convolutional filters of depth 1, DEPTHWISE_CONV
+     * applies a different filter to each input channel (expanding from 1
+     * channel to channel_multiplier channels for each), then concatenates the
+     * results together.
+     *
+     * The output has depth_out = depth_in * depth_multiplier channels.
+     * The output dimensions are functions of the filter dimensions, stride, and
+     * padding.
+     *
+     * The values in the output tensor are computed as:
+     *
+     *     output[b, i, j, k * channel_multiplier + q] =
+     *         sum_{di, dj} (
+     *             input[b, strides[1] * i + di, strides[2] * j + dj, k] *
+     *             filter[1, di, dj, k * channel_multiplier + q]
+     *         ) + bias[k * channel_multiplier + q]
+     *
+     * Supported tensor {@link OperandType} configurations:
+     * * 32 bit floating point:
+     * * * {@link OperandType::TENSOR_FLOAT32} for input, filter, output, and bias.
+     *
+     * * Quantized:
+     * * * {@link OperandType::TENSOR_QUANT8_ASYMM} for input, filter, and output.
+     * * * {@link OperandType::TENSOR_INT32} for bias (with scale set to
+     * * * input.scale * filter.scale).
+     *
+     * Available since HAL version 1.2:
+     * * 16 bit floating point:
+     * * * {@link OperandType::TENSOR_FLOAT16} for input, filter, output, and bias.
+     *
+     * * Quantized with symmetric per channel quantization for the filter:
+     * * * {@link OperandType::TENSOR_QUANT8_ASYMM} for input, and output.
+     * * * {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL} for filter.
+     * * * {@link OperandType::TENSOR_INT32} for bias (scale set to 0.0,
+     * * * each value scaling is separate and equal to input.scale * filter.scales[channel]).
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     * NCHW is supported since HAL version 1.2.
+     *
+     * Both explicit padding and implicit padding are supported.
+     *
+     * Inputs (explicit padding):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth_in],
+     *      specifying the input.
+     * * 1: A 4-D tensor, of shape [1, filter_height, filter_width, depth_out],
+     *      specifying the filter.
+     *      For tensor of type {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL}
+     *      the channel dimension (SymmPerChannelQuantParams::channelDim)
+     *      must be set to 3.
+     * * 2: A 1-D tensor, of shape [depth_out], specifying the bias. For input
+     *      tensor of type {@link OperandType::TENSOR_FLOAT32}
+     *      or {@link OperandType::TENSOR_FLOAT16} the bias must be of the same
+     *      type. For filter tensor of {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      the bias should be of {@link OperandType::TENSOR_INT32}, with zeroPoint
+     *      of 0 and bias_scale == input_scale * filter_scale.
+     *      For filter tensor of {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL},
+     *      the bias should be of {@link OperandType::TENSOR_INT32}, with zeroPoint of 0
+     *      and bias_scale of 0. The actual scale of each value 'i' is equal to
+     *      bias_scale[i] = input_scale * filter_scale[i].
+     * * 3: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the left, in the ‘width’ dimension.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the right, in the ‘width’ dimension.
+     * * 5: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the top, in the ‘height’ dimension.
+     * * 6: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the bottom, in the ‘height’ dimension.
+     * * 7: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘width’ dimension.
+     * * 8: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘height’ dimension.
+     * * 9: An {@link OperandType::INT32} scalar, specifying the depthwise
+     *      multiplier.
+     * * 10: An {@link OperandType::INT32} scalar, and has to be one of the
+     *       {@link FusedActivationFunc} values. Specifies the activation to
+     *       invoke on the result.
+     * * 11: An optional {@link OperandType::BOOL} scalar, default to false.
+     *       Set to true to specify NCHW data layout for input0 and output0.
+     *       Available since HAL version 1.2.
+     * * 12: An optional {@link OperandType::INT32} scalar, specifying the dilation
+     *      factor for width. Defaults to 1. If set to k > 1, there will be k-1 skipped
+     *      cells between each filter element on width dimension. If this input is set,
+     *      input 13 (dilation factor for height) must be specified as well.
+     *      Available since HAL version 1.2.
+     * * 13: An optional {@link OperandType::INT32} scalar, specifying the dilation
+     *      factor for height. Defaults to 1. If set to k > 1, there will be k-1 skipped
+     *      cells between each filter element on height dimension. If this input is set,
+     *      input 12 (dilation factor for width) must be specified as well.
+     *      Available since HAL version 1.2.
+     *
+     * Inputs (implicit padding):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth_in],
+     *      specifying the input.
+     * * 1: A 4-D tensor, of shape [1, filter_height, filter_width, depth_out],
+     *      specifying the filter.
+     * * 2: A 1-D tensor, of shape [depth_out], specifying the bias. For input
+     *      tensor of type {@link OperandType::TENSOR_FLOAT32}
+     *      or {@link OperandType::TENSOR_FLOAT16} the bias must be of the same
+     *      type. For filter tensor of {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      the bias should be of {@link OperandType::TENSOR_INT32}, with zeroPoint
+     *      of 0 and bias_scale == input_scale * filter_scale.
+     *      For filter tensor of {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL},
+     *      the bias should be of {@link OperandType::TENSOR_INT32}, with zeroPoint of 0
+     *      and bias_scale of 0. The actual scale of each value 'i' is equal to
+     *      bias_scale[i] = input_scale * filter_scale[i].
+     * * 3: An {@link OperandType::INT32} scalar, specifying the implicit
+     *      padding scheme, has to be one of the
+     *      following values: {0 (NONE), 1 (SAME), 2 (VALID)}.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘width’ dimension.
+     * * 5: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘height’ dimension.
+     * * 6: An {@link OperandType::INT32} scalar, specifying the depthwise
+     *      multiplier.
+     * * 7: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     * * 8: An optional {@link OperandType::BOOL} scalar, default to false.
+     *      Set to true to specify NCHW data layout for input0 and output0.
+     *      Available since HAL version 1.2.
+     * * 9: An optional {@link OperandType::INT32} scalar, specifying the dilation
+     *      factor for width. Defaults to 1. If set to k > 1, there will be k-1 skipped
+     *      cells between each filter element on width dimension. If this input is set,
+     *      input 10 (dilation factor for height) must be specified as well.
+     *      Available since HAL version 1.2.
+     * * 10: An optional {@link OperandType::INT32} scalar, specifying the dilation
+     *      factor for height. Defaults to 1. If set to k > 1, there will be k-1 skipped
+     *      cells between each filter element on height dimension. If this input is set,
+     *      input 9 (dilation factor for width) must be specified as well.
+     *      Available since HAL version 1.2.
+     *
+     * Outputs:
+     * * 0: The output 4-D tensor, of shape
+     *      [batches, out_height, out_width, depth_out]. Before HAL version 1.2, for
+     *      output tensor of {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      the following condition must be satisfied:
+     *      output_scale > input_scale * filter_scale
+     */
+    DEPTHWISE_CONV_2D = @1.2::OperationType:DEPTHWISE_CONV_2D,
+
+    /**
+     * Rearranges data from depth into blocks of spatial data.
+     *
+     * More specifically, this op outputs a copy of the input tensor where
+     * values from the depth dimension are moved in spatial blocks to the height
+     * and width dimensions. The value block_size indicates the input block size
+     * and how the data is moved.
+     *
+     * Chunks of data of size block_size * block_size from depth are rearranged
+     * into non-overlapping blocks of size block_size x block_size.
+     *
+     * The width of the output tensor is input_depth * block_size, whereas the
+     * height is input_height * block_size. The depth of the input tensor must
+     * be divisible by block_size * block_size
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     * NCHW is supported since HAL version 1.2.
+     *
+     * Inputs:
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth_in],
+     *      specifying the input.
+     * * 1: An {@link OperandType::INT32} scalar, specifying the block_size.
+     *      block_size must be >=1 and block_size * block_size must be a divisor
+     *      of the input depth.
+     * * 2: An optional {@link OperandType::BOOL} scalar, default to false.
+     *      Set to true to specify NCHW data layout for input0 and output0.
+     *      Available since HAL version 1.2.
+     *
+     * Outputs:
+     * * 0: The output 4-D tensor, of shape [batch, height*block_size,
+     *      width*block_size, depth/(block_size*block_size)].
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    DEPTH_TO_SPACE = @1.2::OperationType:DEPTH_TO_SPACE,
+
+    /**
+     * Dequantizes the input tensor.
+     *
+     * The formula is:
+     *
+     *     output = (input - zeroPoint) * scale.
+     *
+     * Supported input tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     * * {@link OperandType::TENSOR_QUANT8_SYMM} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL} (since HAL version 1.2)
+     *
+     * Supported output tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}.
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: A tensor.
+     *      Since HAL version 1.2, this tensor may be zero-sized.
+     *
+     * Outputs:
+     * * 0: A tensor with the same shape as input0.
+     */
+    DEQUANTIZE = @1.2::OperationType:DEQUANTIZE,
+
+    /**
+     * Looks up sub-tensors in the input tensor.
+     *
+     * This operator takes for input a tensor of values (Values) and
+     * a one-dimensional tensor of selection indices (Lookups).
+     * The output tensor is the concatenation of sub-tensors of Values as
+     * selected by Lookups.
+     *
+     * Think of Values as being sliced along its first dimension:
+     * The entries in Lookups select which slices are concatenated together
+     * to create the output tensor.
+     *
+     * For example, if Values has shape of [40, 200, 300] and
+     * Lookups has shape of [3], all three values found in Lookups are
+     * expected to be between 0 and 39. The resulting tensor must
+     * have shape of [3, 200, 300].
+     *
+     * If a value in Lookups is out of bounds, the operation must fail
+     * and an error must be reported.
+     *
+     * Supported value tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported value tensor rank: from 2
+     *
+     * Inputs:
+     * * 0: Lookups. A 1-D tensor of {@link OperandType::TENSOR_INT32}.
+     *      The values are indices into the first dimension of Values.
+     * * 1: Values. An n-D tensor, where n >= 2, from which sub-tensors are
+     *      extracted.
+     *
+     * Output:
+     * * 0: A n-D tensor with the same rank and shape as the Values
+     *      tensor, except for the first dimension which has the same size
+     *      as Lookups' only dimension.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input1.
+     */
+    EMBEDDING_LOOKUP = @1.2::OperationType:EMBEDDING_LOOKUP,
+
+    /**
+     * Computes element-wise floor() on the input tensor.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: A tensor.
+     *
+     * Outputs:
+     * * 0: The output tensor, of the same {@link OperandType} and dimensions as
+     *      the input tensor.
+     */
+    FLOOR = @1.2::OperationType:FLOOR,
+
+    /**
+     * Denotes a fully (densely) connected layer, which connects all elements
+     * in the input tensor with each element in the output tensor.
+     *
+     * This layer implements the operation:
+     *
+     *     outputs = activation(inputs * weights’ + bias)
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4.
+     *
+     * Inputs:
+     * * 0: A tensor of at least rank 2, specifying the input. If rank is
+     *      greater than 2, then it gets flattened to a 2-D Tensor. The
+     *      (flattened) 2-D Tensor is reshaped (if necessary) to
+     *      [batch_size, input_size], where "input_size" corresponds to the
+     *      number of inputs to the layer, matching the second dimension of
+     *      weights, and "batch_size" is calculated by dividing the number of
+     *      elements by "input_size".
+     *      Since HAL version 1.2, zero batch_size is supported for this tensor.
+     * * 1: A 2-D tensor, specifying the weights, of shape
+     *      [num_units, input_size], where "num_units" corresponds to the number
+     *      of output nodes.
+     * * 2: A 1-D tensor, of shape [num_units], specifying the bias. For input
+     *      tensor of {@link OperandType::TENSOR_FLOAT32}, the bias should
+     *      also be of {@link OperandType::TENSOR_FLOAT32}. For input tensor
+     *      of {@link OperandType::TENSOR_QUANT8_ASYMM}, the bias should be
+     *      of {@link OperandType::TENSOR_INT32}, with zeroPoint of 0 and
+     *      bias_scale == input_scale * filter_scale.
+     * * 3: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     *
+     * Outputs:
+     * * 0: The output tensor, of shape [batch_size, num_units]. Before HAL version 1.2, for
+     *      output tensor of {@link OperandType::TENSOR_QUANT8_ASYMM}, the following
+     *      condition must be satisfied: output_scale > input_scale * filter_scale.
+     */
+    FULLY_CONNECTED = @1.2::OperationType:FULLY_CONNECTED,
+
+    /**
+     * Looks up sub-tensors in the input tensor using a key-value map.
+     *
+     * This operator takes for input a tensor of values (Values),
+     * a one-dimensional tensor of selection values (Lookups) and
+     * a one-dimensional tensor that maps these values to Values
+     * indexes. The output tensor is the concatenation of sub-tensors of
+     * Values as selected by Lookups via Keys.
+     *
+     * Think of Values as being sliced along its outer-most dimension.
+     * The output is a concatenation of selected slices, with one slice
+     * for each entry of Lookups. The slice selected is the one at the
+     * same index as the Maps entry that matches the value in Lookups.
+     *
+     * For a hit, the corresponding sub-tensor of Values is included
+     * in the Output tensor. For a miss, the corresponding sub-tensor in
+     * Output must have zero values.
+     *
+     * For example, if Values has shape of [40, 200, 300],
+     * Keys should have a shape of [40]. If Lookups tensor has shape
+     * of [3], three slices are being concatenated, so the resulting tensor
+     * must have the shape of [3, 200, 300]. If the first entry in Lookups
+     * has the value 123456, that value must be located in Keys tensor.
+     * If the sixth entry of Keys contains 123456, the sixth slice of Values
+     * must be selected. If no entry in Keys has 123456, a slice of zeroes
+     * must be concatenated.
+     *
+     * Supported value tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported value tensor rank: from 2
+     *
+     * Inputs:
+     * * 0: Lookups. A 1-D {@link OperandType::TENSOR_INT32} tensor with
+     *      shape [ k ].
+     * * 1: Keys. A 1-D {@link OperandType::TENSOR_INT32} tensor with shape
+     *      [ n ]; Keys and Values pair represent a map, i.e., the ith element
+     *      in Keys (Keys[i]) is the key to select the ith sub-tensor in Values
+     *      (Values[i]), where 0 <= i <= n-1. Keys tensor *MUST* be sorted in
+     *      ascending order.
+     * * 2: Values. A tensor with shape of [ n, … ]; i.e., the first dimension
+     *      must be n.
+     *
+     * Outputs:
+     * * 0: Output. A tensor with shape [ k …].
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input2.
+     * * 1: Hits. A boolean tensor with shape [ k ] indicates whether the lookup
+     *      hits (True) or not (False).
+     *      Stored as {@link OperandType::TENSOR_QUANT8_ASYMM} with offset 0
+     *      and scale 1.0f.
+     *      A non-zero byte represents True, a hit. A zero indicates otherwise.
+     */
+    HASHTABLE_LOOKUP = @1.2::OperationType:HASHTABLE_LOOKUP,
+
+    /**
+     * Applies L2 normalization along the depth dimension.
+     *
+     * The values in the output tensor are computed as:
+     *
+     *     output[batch, row, col, channel] =
+     *         input[batch, row, col, channel] /
+     *         sqrt(sum_{c} pow(input[batch, row, col, c], 2))
+     *
+     * For input tensor with rank less than 4, independently normalizes each
+     * 1-D slice along dimension dim.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM} (since HAL version 1.2)
+     *
+     * Supported tensor rank: up to 4
+     * Tensors with rank less than 4 are only supported since HAL version 1.2.
+     *
+     * Inputs:
+     * * 0: An n-D tensor, specifying the tensor to be normalized.
+     * * 1: An optional {@link OperandType::INT32} scalar, default to -1,
+     *      specifying the dimension normalization would be performed on.
+     *      Negative index is used to specify axis from the end (e.g. -1 for
+     *      the last axis). Must be in the range [-n, n).
+     *      Available since HAL version 1.2.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} and same shape as input0.
+     *      For {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      the scale must be 1.f / 128 and the zeroPoint must be 128.
+     */
+    L2_NORMALIZATION = @1.2::OperationType:L2_NORMALIZATION,
+
+    /**
+     * Performs an 2-D L2 pooling operation.
+     *
+     * The output dimensions are functions of the filter dimensions, stride, and
+     * padding.
+     *
+     * The values in the output tensor are computed as:
+     *
+     *     output[b, i, j, c] =
+     *         sqrt(sum_{di, dj} pow(input[b, strides[1] * i + di, strides[2] * j + dj, c], 2) /
+     *              sum(1))
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     * NCHW is supported since HAL version 1.2.
+     *
+     * Both explicit padding and implicit padding are supported.
+     *
+     * Inputs (explicit padding):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth], specifying
+     *      the input.
+     *      Since HAL version 1.2, zero batches is supported for this tensor.
+     * * 1: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the left, in the ‘width’ dimension.
+     * * 2: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the right, in the ‘width’ dimension.
+     * * 3: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the top, in the ‘height’ dimension.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the bottom, in the ‘height’ dimension.
+     * * 5: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘width’ dimension.
+     * * 6: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘height’ dimension.
+     * * 7: An {@link OperandType::INT32} scalar, specifying the filter
+     *      width.
+     * * 8: An {@link OperandType::INT32} scalar, specifying the filter
+     *      height.
+     * * 9: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     * * 10: An optional {@link OperandType::BOOL} scalar, default to false.
+     *       Set to true to specify NCHW data layout for input0 and output0.
+     *       Available since HAL version 1.2.
+     *
+     * Inputs (implicit padding):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth], specifying
+     *      the input.
+     *      Since HAL version 1.2, zero batches is supported for this tensor.
+     * * 1: An {@link OperandType::INT32} scalar, specifying the implicit
+     *      padding scheme, has to be one of the
+     *      following values: {0 (NONE), 1 (SAME), 2 (VALID)}.
+     * * 2: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘width’ dimension.
+     * * 3: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘height’ dimension.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the filter
+     *      width.
+     * * 5: An {@link OperandType::INT32} scalar, specifying the filter
+     *      height.
+     * * 6: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     * * 7: An optional {@link OperandType::BOOL} scalar, default to false.
+     *      Set to true to specify NCHW data layout for input0 and output0.
+     *      Available since HAL version 1.2.
+     *
+     * Outputs:
+     * * 0: The output 4-D tensor, of shape
+     *      [batches, out_height, out_width, depth].
+     */
+    L2_POOL_2D = @1.2::OperationType:L2_POOL_2D,
+
+    /**
+     * Applies Local Response Normalization along the depth dimension.
+     *
+     * The 4-D input tensor is treated as a 3-D array of 1-D vectors (along the
+     * last dimension), and each vector is normalized independently. Within a
+     * given vector, each component is divided by the weighted, squared sum of
+     * inputs within depth_radius.
+     *
+     * The output is calculated using this formula:
+     *
+     *     sqr_sum[a, b, c, d] = sum(
+     *         pow(input[a, b, c, d - depth_radius : d + depth_radius + 1], 2))
+     *     output = input / pow((bias + alpha * sqr_sum), beta)
+     *
+     * For input tensor with rank less than 4, independently normalizes each
+     * 1-D slice along specified dimension.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: up to 4
+     * Tensors with rank less than 4 are only supported since HAL version 1.2.
+     *
+     * Inputs:
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth], specifying
+     *      the input.
+     * * 1: An {@link OperandType::INT32} scalar, specifying the radius of
+     *      the normalization window.
+     * * 2: A scalar, specifying the bias, must not be zero.
+     *      For input tensor of {@link OperandType::TENSOR_FLOAT16}, the bias
+     *      value must be of {@link OperandType::FLOAT16}.
+     *      For input tensor of {@link OperandType::TENSOR_FLOAT32}, the bias
+     *      value must be of {@link OperandType::FLOAT32}.
+     * * 3: A scalar, specifying the scale factor, alpha.
+     *      For input tensor of {@link OperandType::TENSOR_FLOAT16}, the
+     *      alpha value must be of {@link OperandType::FLOAT16}.
+     *      For input tensor of {@link OperandType::TENSOR_FLOAT32}, the
+     *      alpha value must be of {@link OperandType::FLOAT32}.
+     * * 4: A scalar, specifying the exponent, beta.
+     *      For input tensor of {@link OperandType::TENSOR_FLOAT16}, the beta
+     *      value must be of {@link OperandType::FLOAT16}.
+     *      For input tensor of {@link OperandType::TENSOR_FLOAT32}, the beta
+     *      value must be of {@link OperandType::FLOAT32}.
+     * * 5: An optional {@link OperandType::INT32} scalar, default to -1,
+     *      specifying the dimension normalization would be performed on.
+     *      Negative index is used to specify axis from the end (e.g. -1 for
+     *      the last axis). Must be in the range [-n, n).
+     *      Available since HAL version 1.2.
+     *
+     * Outputs:
+     * * 0: The output tensor of same shape as input0.
+     */
+    LOCAL_RESPONSE_NORMALIZATION = @1.2::OperationType:LOCAL_RESPONSE_NORMALIZATION,
+
+    /**
+     * Computes sigmoid activation on the input tensor element-wise.
+     *
+     * The output is calculated using this formula:
+     *
+     *     output = 1 / (1 + exp(-input))
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4.
+     *
+     * Inputs:
+     * * 0: A tensor, specifying the input.
+     *      Since HAL version 1.2, this tensor may be zero-sized.
+     *
+     * Outputs:
+     * * 0: The output tensor of same shape as input0.
+     *      For {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      the scale must be 1.f / 256 and the zeroPoint must be 0.
+     */
+    LOGISTIC = @1.2::OperationType:LOGISTIC,
+
+    /**
+     * Projects an input to a bit vector via locality senstive hashing.
+     *
+     * Supported input tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported input tensor rank: from 1
+     *
+     * Inputs:
+     * * 0: Hash functions. Dim.size == 2, DataType: Float.
+     *      Tensor[0].Dim[0]: Number of hash functions.
+     *      Tensor[0].Dim[1]: Number of projected output bits generated by each
+     *      hash function.
+     *      If the projection type is Sparse:
+     *      Tensor[0].Dim[1] + ceil(log2(Tensor[0].Dim[0])) <= 32
+     *
+     * * 1: Input. Dim.size >= 1, no restriction on DataType.
+     * * 2: Weight. Optional. Dim.size == 1, DataType: Float.
+     *      If not set, each input element is considered to have the same weight
+     *      of 1.0.
+     *      Tensor[1].Dim[0] == Tensor[2].Dim[0]
+     * * 3: Type:
+     *        Sparse:
+     *          Value LSHProjectionType_SPARSE(=3) (since HAL version 1.2).
+     *          Computed bit vector is considered to be sparse.
+     *          Each output element is an int32 made up of multiple bits
+     *          computed from hash functions.
+     *
+     *          NOTE: To avoid collisions across hash functions, an offset value
+     *          of k * (1 << Tensor[0].Dim[1]) will be added to each signature,
+     *          where k is the index of the hash function.
+     *
+     *          Value LSHProjectionType_SPARSE_DEPRECATED(=1).
+     *          Legacy behavior that does not include the offset value.
+     *
+     *        Dense:
+     *          Value LSHProjectionType_DENSE(=2).
+     *          Computed bit vector is considered to be dense. Each output
+     *          element represents a bit and can take the value of either
+     *          0 or 1.
+     *
+     * Outputs:
+     * * 0: If the projection type is Sparse:
+     *      Output.Dim == { Tensor[0].Dim[0] }
+     *      A tensor of int32 that represents hash signatures.
+     *
+     *      If the projection type is Dense:
+     *      Output.Dim == { Tensor[0].Dim[0] * Tensor[0].Dim[1] }
+     *      A flattened tensor that represents projected bit vectors.
+     * The offset value for sparse projections was added in HAL version 1.2.
+     */
+    LSH_PROJECTION = @1.2::OperationType:LSH_PROJECTION,
+
+    /**
+     * Performs a single time step in a Long Short-Term Memory (LSTM) layer
+     *
+     * The LSTM operation is described by the following equations.
+     *
+     * \f{eqnarray*}{
+     * i_t =& \sigma(W_{xi}x_t+W_{hi}h_{t-1}+W_{ci}C_{t-1}+b_i) & \\
+     * f_t =& \sigma(W_{xf}x_t+W_{hf}h_{t-1}+W_{cf}C_{t-1}+b_f) & \\
+     * C_t =& clip(f_t \odot C_{t-1} + i_t \odot
+     *        g(W_{xc}x_t+W_{hc}h_{t-1}+b_c),\ t_{cell}) & \\
+     * o_t =& \sigma(W_{xo}x_t+W_{ho}h_{t-1}+W_{co}C_t+b_o) & \\
+     *      & & \\
+     *      & clip(W_{proj}(o_t \odot g(C_t))+b_{proj},\ t_{proj})
+     *      & if\ there\ is\ a\ projection; \\
+     * h_t =& & \\
+     *      & o_t \odot g(C_t) & otherwise. \\
+     * \f}
+     * Where:
+     * * \f$x_t\f$ is the input,
+     * * \f$i_t\f$ is the input gate,
+     * * \f$f_t\f$ is the forget gate,
+     * * \f$C_t\f$ is the cell state,
+     * * \f$o_t\f$ is the output,
+     * * \f$h_t\f$ is the output state,
+     * * \f$\sigma\f$ is the logistic sigmoid function,
+     * * \f$g\f$ is the cell input and cell output activation function, usually
+     *   \f$tahn\f$,
+     * * \f$W_{xi}\f$ is the input-to-input weight matrix,
+     * * \f$W_{hi}\f$ is the recurrent to input weight matrix,
+     * * \f$W_{ci}\f$ is the cell-to-input weight matrix,
+     * * \f$b_i\f$ is the input gate bias,
+     * * \f$W_{xf}\f$ is the input-to-forget weight matrix,
+     * * \f$W_{hf}\f$ is the recurrent-to-forget weight matrix,
+     * * \f$W_{cf}\f$ is the cell-to-forget weight matrix,
+     * * \f$b_f\f$ is the forget gate bias,
+     * * \f$W_{xc}\f$ is the input-to-cell weight matrix,
+     * * \f$W_{hc}\f$ is the recurrent-to-cell weight matrix,
+     * * \f$b_c\f$ is the cell bias,
+     * * \f$W_{xo}\f$ is the input-to-output weight matrix,
+     * * \f$W_{ho}\f$ is the recurrent-to-output weight matrix,
+     * * \f$W_{co}\f$ is the cell-to-output weight matrix,
+     * * \f$b_o\f$ is the output gate bias,
+     * * \f$W_{proj}\f$ is the projection weight matrix,
+     * * \f$b_{proj}\f$ is the projection bias,
+     * * \f$t_{cell}\f$ is the threshold for clipping the cell state, and
+     * * \f$t_{proj}\f$ is the threshold for clipping the projected output.
+     * * \f$\odot\f$ is the
+     *   <a href="https://en.wikipedia.org/wiki/Hadamard_product_(matrices)">
+     *   Hadamard product</a> that takes two matrices and produces another
+     *   matrix, each element of which is the product of the corresponding
+     *   elements of the input matrices.
+     *
+     * Since HAL version 1.2 LSTM supports layer normalization.
+     * In case layer normalization is used, the inputs to internal activation
+     * functions (sigmoid and \f$g\f$) are normalized, rescaled and recentered
+     * following an approach from section 3.1 from
+     * https://arxiv.org/pdf/1607.06450.pdf
+     *
+     * The operation has the following independently optional inputs:
+     * * The cell-to-input weights (\f$W_{ci}\f$), cell-to-forget weights
+     *   (\f$W_{cf}\f$) and cell-to-output weights (\f$W_{co}\f$) either all
+     *   have values or neither of them have values (i.e., all set to null). If
+     *   they have values, the peephole optimization is used.
+     * * The input-to-input weights (\f$W_{xi}\f$), recurrent-to-input weights
+     *   (\f$W_{hi}\f$) and input gate bias (\f$b_i\f$) either all have values,
+     *   or none of them have values. If they have no values, coupling of input
+     *   and forget gates (CIFG) is used, in which case the input gate
+     *   (\f$i_t\f$) is calculated using the following equation instead.
+     *   \f{eqnarray*}{
+     *   i_t = 1 - f_t
+     *   \f}
+     *   In case peephole optimization is used and CIFG is not used
+     *   cell-to-input (\f$W_{ci}\f$) weights must be present. Otherwise, the
+     *   cell-to-input weights must have no value.
+     * * The projection weights (\f$W_{proj}\f$) is required only for the
+     *   recurrent projection layer, and should otherwise have no value.
+     * * The projection bias (\f$b_{proj}\f$) may (but not required to) have a
+     *   value if the recurrent projection layer exists, and should otherwise
+     *   have no value.
+     * * (HAL version 1.2 or later) The four layer normalization weights either all have
+     *   values or none of them have values. Additionally, if CIFG is used,
+     *   input layer normalization weights tensor is omitted and the other layer
+     *   normalization weights either all have values or none of them have
+     *   values. Layer normalization is used when the values of all the layer
+     *   normalization weights are present.
+     *
+     * References:
+     *
+     * The default non-peephole non-CIFG implementation is based on:
+     * http://www.bioinf.jku.at/publications/older/2604.pdf
+     * S. Hochreiter and J. Schmidhuber. "Long Short-Term Memory". Neural
+     * Computation, 9(8):1735-1780, 1997.
+     *
+     * The peephole implementation and projection layer is based on:
+     * https://research.google.com/pubs/archive/43905.pdf
+     * Hasim Sak, Andrew Senior, and Francoise Beaufays. "Long short-term memory
+     * recurrent neural network architectures for large scale acoustic
+     * modeling." INTERSPEECH, 2014.
+     * (However, the concept of peephole optimization was introduced in work
+     * prior to this paper.)
+     *
+     * The coupling of input and forget gate (CIFG) is based on:
+     * http://arxiv.org/pdf/1503.04069.pdf
+     * Greff et al. "LSTM: A Search Space Odyssey"
+     *
+     * The layer normalization is based on:
+     * https://arxiv.org/pdf/1607.06450.pdf
+     * Jimmy Ba et al. "Layer Normalization"
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * All input and output tensors must be of the same type.
+     *
+     * Inputs:
+     * * 0: The input (\f$x_t\f$).
+     *      A 2-D tensor of shape [batch_size, input_size], where “batch_size”
+     *      corresponds to the batching dimension, and “input_size” is the size
+     *      of the input.
+     * * 1: The input-to-input weights (\f$W_{xi}\f$). Optional.
+     *      A 2-D tensor of shape [num_units, input_size], where “num_units”
+     *      corresponds to the number of cell units.
+     * * 2: The input-to-forget weights (\f$W_{xf}\f$).
+     *      A 2-D tensor of shape [num_units, input_size].
+     * * 3: The input-to-cell weights (\f$W_{xc}\f$).
+     *      A 2-D tensor of shape [num_units, input_size].
+     * * 4: The input-to-output weights (\f$W_{xo}\f$).
+     *      A 2-D tensor of shape [num_units, input_size].
+     * * 5: The recurrent-to-input weights (\f$W_{hi}\f$). Optional.
+     *      A 2-D tensor of shape [num_units, output_size], where “output_size”
+     *      corresponds to either the number of cell units (i.e., “num_units”),
+     *      or the second dimension of the “projection_weights”, if defined.
+     * * 6: The recurrent-to-forget weights (\f$W_{hf}\f$).
+     *      A 2-D tensor of shape [num_units, output_size].
+     * * 7: The recurrent-to-cell weights (\f$W_{hc}\f$).
+     *      A 2-D tensor of shape [num_units, output_size].
+     * * 8: The recurrent-to-output weights (\f$W_{ho}\f$).
+     *      A 2-D tensor of shape [num_units, output_size].
+     * * 9: The cell-to-input weights (\f$W_{ci}\f$). Optional.
+     *      A 1-D tensor of shape [num_units].
+     * * 10:The cell-to-forget weights (\f$W_{cf}\f$). Optional.
+     *      A 1-D tensor of shape [num_units].
+     * * 11:The cell-to-output weights (\f$W_{co}\f$). Optional.
+     *      A 1-D tensor of shape [num_units].
+     * * 12:The input gate bias (\f$b_i\f$). Optional.
+     *      A 1-D tensor of shape [num_units].
+     * * 13:The forget gate bias (\f$b_f\f$).
+     *      A 1-D tensor of shape [num_units].
+     * * 14:The cell bias (\f$b_c\f$).
+     *      A 1-D tensor of shape [num_units].
+     * * 15:The output gate bias (\f$b_o\f$).
+     *      A 1-D tensor of shape [num_units].
+     * * 16:The projection weights (\f$W_{proj}\f$). Optional.
+     *      A 2-D tensor of shape [output_size, num_units].
+     * * 17:The projection bias (\f$b_{proj}\f$). Optional.
+     *      A 1-D tensor of shape [output_size].
+     * * 18:The output state (in) (\f$h_{t-1}\f$).
+     *      A 2-D tensor of shape [batch_size, output_size].
+     * * 19:The cell state (in) (\f$C_{t-1}\f$).
+     *      A 2-D tensor of shape [batch_size, num_units].
+     * * 20:The activation function (\f$g\f$).
+     *      A value indicating the activation function:
+     *      <ul>
+     *      <li>0: None;
+     *      <li>1: Relu;
+     *      <li>3: Relu6;
+     *      <li>4: Tanh;
+     *      <li>6: Sigmoid.
+     *      </ul>
+     * * 21:The clipping threshold (\f$t_{cell}\f$) for the cell state, such
+     *      that values are bound within [-cell_clip, cell_clip]. If set to 0.0
+     *      then clipping is disabled.
+     *      Until HAL version 1.2 this scalar must be of type {@link
+     *      OperandType::FLOAT32}. Since HAL version 1.2, if all the input
+     *      tensors have type {@link OperandType::TENSOR_FLOAT32}, this
+     *      scalar must be of the type {@link OperandType::FLOAT32},
+     *      otherwise if all the input tensors have the type {@link
+     *      OperandType::TENSOR_FLOAT16}, this scalar must be of type {@link
+     *      OperandType::FLOAT16}.
+     * * 22:The clipping threshold (\f$t_{proj}\f$) for the output from the
+     *      projection layer, such that values are bound within
+     *      [-proj_clip, proj_clip]. If set to 0.0 then clipping is disabled.
+     *      Until HAL version 1.2 this scalar must be of type {@link
+     *      OperandType::FLOAT32}. Since HAL version 1.2, if all the input
+     *      tensors have type {@link OperandType::TENSOR_FLOAT32}, this
+     *      scalar must be of the type {@link OperandType::FLOAT32},
+     *      otherwise if all the input tensors have the type {@link
+     *      OperandType::TENSOR_FLOAT16}, this scalar must be of type {@link
+     *      OperandType::FLOAT16}.
+     * Since HAL version 1.2 there are additional inputs to this op:
+     * * 23:The input layer normalization weights.
+     *      A 1-D tensor of shape [num_units]. Used to rescale normalized inputs
+     *      to activation at input gate.
+     * * 24:The forget layer normalization weights.
+     *      A 1-D tensor of shape [num_units]. Used to rescale normalized inputs
+     *      to activation at forget gate.
+     * * 25:The cell layer normalization weights.
+     *      A 1-D tensor of shape [num_units]. Used to rescale normalized inputs
+     *      to activation at cell gate.
+     * * 26:The output layer normalization weights.
+     *      A 1-D tensor of shape [num_units]. Used to rescale normalized inputs
+     *      to activation at output gate.
+     *
+     * Outputs:
+     * * 0: The scratch buffer.
+     *      A 2-D tensor of shape [batch_size, num_units * 3] with CIFG, or
+     *      [batch_size, num_units * 4] without CIFG.
+     * * 1: The output state (out) (\f$h_t\f$).
+     *      A 2-D tensor of shape [batch_size, output_size].
+     * * 2: The cell state (out) (\f$C_t\f$).
+     *      A 2-D tensor of shape [batch_size, num_units].
+     * * 3: The output (\f$o_t\f$).
+     *      A 2-D tensor of shape [batch_size, output_size]. This is effectively
+     *      the same as the current “output state (out)” value.
+     */
+    LSTM = @1.2::OperationType:LSTM,
+
+    /**
+     * Performs an 2-D max pooling operation.
+     *
+     * The output dimensions are functions of the filter dimensions, stride, and
+     * padding.
+     *
+     * The values in the output tensor are computed as:
+     *
+     *     output[b, i, j, channel] =
+     *         max_{di, dj} (
+     *             input[b, strides[1] * i + di, strides[2] * j + dj, channel]
+     *         )
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     * NCHW is supported since HAL version 1.2.
+     *
+     * Both explicit padding and implicit padding are supported.
+     *
+     * Inputs (explicit padding):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth], specifying
+     *      the input.
+     *      Since HAL version 1.2, zero batches is supported for this tensor.
+     * * 1: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the left, in the ‘width’ dimension.
+     * * 2: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the right, in the ‘width’ dimension.
+     * * 3: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the top, in the ‘height’ dimension.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the bottom, in the ‘height’ dimension.
+     * * 5: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘width’ dimension.
+     * * 6: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘height’ dimension.
+     * * 7: An {@link OperandType::INT32} scalar, specifying the filter
+     *      width.
+     * * 8: An {@link OperandType::INT32} scalar, specifying the filter
+     *      height.
+     * * 9: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     * * 10: An optional {@link OperandType::BOOL} scalar, default to false.
+     *       Set to true to specify NCHW data layout for input0 and output0.
+     *       Available since HAL version 1.2.
+     *
+     * Inputs (implicit padding):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth], specifying
+     *      the input.
+     *      Since HAL version 1.2, zero batches is supported for this tensor.
+     * * 1: An {@link OperandType::INT32} scalar, specifying the implicit
+     *      padding scheme, has to be one of the
+     *      following values: {0 (NONE), 1 (SAME), 2 (VALID)}.
+     * * 2: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘width’ dimension.
+     * * 3: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘height’ dimension.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the filter
+     *      width.
+     * * 5: An {@link OperandType::INT32} scalar, specifying the filter
+     *      height.
+     * * 6: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     * * 7: An optional {@link OperandType::BOOL} scalar, default to false.
+     *      Set to true to specify NCHW data layout for input0 and output0.
+     *      Available since HAL version 1.2.
+     *
+     * Outputs:
+     * * 0: The output 4-D tensor, of shape
+     *      [batches, out_height, out_width, depth].
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    MAX_POOL_2D = @1.2::OperationType:MAX_POOL_2D,
+
+    /**
+     * Multiplies two tensors, element-wise.
+     *
+     * Takes two input tensors of identical {@link OperandType} and compatible
+     * dimensions. The output is the product of both input tensors, optionally
+     * modified by an activation function.
+     *
+     * Two dimensions are compatible when:
+     *     1. they are equal, or
+     *     2. one of them is 1
+     *
+     * The size of the resulting output is the maximum size along each dimension
+     * of the input operands. It starts with the trailing dimensions, and works
+     * its way forward.
+     *
+     * Since HAL version 1.2, generic zero-sized input tensor is supported. Zero
+     * dimension is only compatible with 0 or 1. The size of the output
+     * dimension is zero if either of corresponding input dimension is zero.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: A tensor.
+     * * 1: A tensor of the same {@link OperandType}, and compatible dimensions
+     *      as input0.
+     * * 2: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     *
+     * Outputs:
+     * * 0: The product, a tensor of the same {@link OperandType} as input0.
+     *      For output tensor of {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      the following condition must be satisfied:
+     *      output_scale > input1_scale * input2_scale.
+     */
+    MUL = @1.2::OperationType:MUL,
+
+    /**
+     * Computes rectified linear activation on the input tensor element-wise.
+     *
+     * The output is calculated using this formula:
+     *
+     *     output = max(0, input)
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4.
+     *
+     * Inputs:
+     * * 0: A tensor, specifying the input.
+     *      Since HAL version 1.2, this tensor may be zero-sized.
+     *
+     * Outputs:
+     * * 0: The output tensor of same shape as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    RELU = @1.2::OperationType:RELU,
+
+    /**
+     * Computes rectified linear 1 activation on the input tensor element-wise.
+     *
+     * The output is calculated using this formula:
+     *
+     *     output = min(1.f, max(-1.f, input))
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4.
+     *
+     * Inputs:
+     * * 0: A tensor, specifying the input.
+     *      Since HAL version 1.2, this tensor may be zero-sized.
+     *
+     * Outputs:
+     * * 0: The output tensor of the same shape as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    RELU1 = @1.2::OperationType:RELU1,
+
+    /**
+     * Computes rectified linear 6 activation on the input tensor element-wise.
+     *
+     * The output is calculated using this formula:
+     *
+     *     output = min(6, max(0, input))
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4.
+     *
+     * Inputs:
+     * * 0: A tensor, specifying the input.
+     *      Since HAL version 1.2, this tensor may be zero-sized.
+     *
+     * Outputs:
+     * * 0: The output tensor of same shape as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    RELU6 = @1.2::OperationType:RELU6,
+
+    /**
+     * Reshapes a tensor.
+     *
+     * Given tensor, this operation returns a tensor that has the same values as
+     * tensor, but with a newly specified shape.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4.
+     *
+     * Inputs:
+     * * 0: A tensor, specifying the tensor to be reshaped.
+     * * 1: A 1-D tensor of {@link OperandType::TENSOR_INT32}, defining the
+     *      shape of the output tensor. The number of elements implied by shape
+     *      must be the same as the number of elements in the input tensor.
+     *
+     *      If one component of shape is the special value -1, the size of that
+     *      dimension is computed so that the total size remains constant. In
+     *      particular, a shape of [-1] flattens into 1-D. At most one component
+     *      of shape can be -1.
+     *
+     * Outputs:
+     * * 0: The output tensor, of shape specified by the input shape.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    RESHAPE = @1.2::OperationType:RESHAPE,
+
+    /**
+     * Resizes images to given size using the bilinear interpretation.
+     *
+     * Resized images must be distorted if their output aspect ratio is not the
+     * same as input aspect ratio. The corner pixels of output may not be the
+     * same as corner pixels of input.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM} (since HAL version 1.2)
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     * NCHW is supported since HAL version 1.2.
+     *
+     * Both resizing by shape and resizing by scale are supported.
+     *
+     * Inputs (resizing by shape):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth], specifying
+     *      the input.
+     *      Since HAL version 1.2, zero batches is supported for this tensor.
+     * * 1: An {@link OperandType::INT32} scalar, specifying the output
+     *      width of the output tensor.
+     * * 2: An {@link OperandType::INT32} scalar, specifying the output
+     *      height of the output tensor.
+     * * 3: An optional {@link OperandType::BOOL} scalar, default to false.
+     *      Set to true to specify NCHW data layout for input0 and output0.
+     *      Available since HAL version 1.2.
+     *
+     * Inputs (resizing by scale, since HAL version 1.2):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth], specifying
+     *      the input. Zero batches is supported for this tensor.
+     * * 1: A scalar, specifying width_scale, the scaling factor of the width
+     *      dimension from the input tensor to the output tensor. The output
+     *      width is calculated as new_width = floor(width * width_scale).
+     *      The scalar must be of {@link OperandType::FLOAT16} if input0 is
+     *      of {@link OperandType::TENSOR_FLOAT16} and of
+     *      {@link OperandType::FLOAT32} otherwise.
+     * * 2: A scalar, specifying height_scale, the scaling factor of the height
+     *      dimension from the input tensor to the output tensor. The output
+     *      height is calculated as new_height = floor(height * height_scale).
+     *      The scalar must be of {@link OperandType::FLOAT16} if input0 is
+     *      of {@link OperandType::TENSOR_FLOAT16} and of
+     *      {@link OperandType::FLOAT32} otherwise.
+     * * 3: An optional {@link OperandType::BOOL} scalar, default to false.
+     *      Set to true to specify NCHW data layout for input0 and output0.
+     *
+     * Outputs:
+     * * 0: The output 4-D tensor, of shape
+     *      [batches, new_height, new_width, depth].
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    RESIZE_BILINEAR = @1.2::OperationType:RESIZE_BILINEAR,
+
+    /**
+     * A basic recurrent neural network layer.
+     *
+     * This layer implements the operation:
+     * outputs = state = activation(inputs * input_weights +
+     *                              state * recurrent_weights + bias)
+     *
+     * Where:
+     * * “input_weights” is a weight matrix that multiplies the inputs;
+     * * “recurrent_weights” is a weight matrix that multiplies the current
+     *    “state” which itself is the output from the previous time step
+     *    computation;
+     * * “bias” is a bias vector (added to each output vector in the batch);
+     * * “activation” is the function passed as the “fused_activation_function”
+     *   argument (if not “NONE”).
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * The input tensors must all be the same type.
+     *
+     * Inputs:
+     * * 0: input.
+     *      A 2-D tensor of shape [batch_size, input_size], where “batch_size”
+     *      corresponds to the batching dimension, and “input_size” is the size
+     *      of the input.
+     * * 1: weights.
+     *      A 2-D tensor of shape [num_units, input_size], where “num_units”
+     *      corresponds to the number of units.
+     * * 2: recurrent_weights.
+     *      A 2-D tensor of shape [num_units, num_units], with columns
+     *      corresponding to the weights from each unit.
+     * * 3: bias.
+     *      A 1-D tensor of shape [num_units].
+     * * 4: hidden state (in).
+     *      A 2-D tensor of shape [batch_size, num_units].
+     * * 5: fused_activation_function.
+     *      An optional {@link FusedActivationFunc} value indicating the
+     *      activation function. If “NONE” is specified then it results in a
+     *      linear activation.
+     *
+     * Outputs:
+     * * 0: hidden state (out).
+     *      A 2-D tensor of shape [batch_size, num_units].
+     *
+     * * 1: output.
+     *      A 2-D tensor of shape [batch_size, num_units]. This is effectively
+     *      the same as the current state value.
+     */
+    RNN = @1.2::OperationType:RNN,
+
+    /**
+     * Computes the softmax activation on the input tensor element-wise, per
+     * batch, by normalizing the input vector so the maximum coefficient is
+     * zero.
+     *
+     * The output is calculated using this formula:
+     *
+     *     output[batch, i] =
+     *         exp((input[batch, i] - max(input[batch, :])) * beta) /
+     *         sum_{k}{exp((input[batch, k] - max(input[batch, :])) * beta)}
+     *
+     * For input tensor with rank other than 2, the activation will be applied
+     * independently on each 1-D slice along specified dimension.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4.
+     * Tensors with rank other than 2 or 4 are only supported since HAL version 1.2.
+     *
+     * Inputs:
+     * * 0: A 2-D or 4-D tensor, specifying the tensor to be reshaped.
+     *      Since HAL version 1.2, this tensor may be zero-sized.
+     * * 1: A scalar, specifying the positive scaling factor for the exponent,
+     *      beta. If input0 is of {@link OperandType::TENSOR_FLOAT32} or
+     *      {@link OperandType::TENSOR_QUANT8_ASYMM}, the scalar must be of
+     *      {@link OperandType::FLOAT32}.
+     *      If input0 is of {@link OperandType::TENSOR_FLOAT16}, then the
+     *      scalar must be of {@link OperandType::FLOAT16}.
+     * * 2: An optional {@link OperandType::INT32} scalar, default to -1,
+     *      specifying the dimension the activation would be performed on.
+     *      Negative index is used to specify axis from the end (e.g. -1 for
+     *      the last axis). Must be in the range [-n, n).
+     *      Available since HAL version 1.2.
+     *
+     * Outputs:
+     * * 0: The output tensor of same shape as input0.
+     *      For {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      the scale must be 1.f / 256 and the zeroPoint must be 0.
+     */
+    SOFTMAX = @1.2::OperationType:SOFTMAX,
+
+    /**
+     * Rearranges blocks of spatial data, into depth.
+     *
+     * More specifically, this op outputs a copy of the input tensor where
+     * values from the height and width dimensions are moved to the depth
+     * dimension. The value block_size indicates the input block size and how
+     * the data is moved.
+     *
+     * Chunks of data of size block_size * block_size from depth are rearranged
+     * into non-overlapping blocks of size block_size x block_size.
+     *
+     * The depth of the output tensor is input_depth * block_size * block_size.
+     * The input tensor's height and width must be divisible by block_size.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     * NCHW is supported since HAL version 1.2.
+     *
+     * Inputs:
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth_in],
+     *      specifying the input.
+     * * 1: An {@link OperandType::INT32} scalar, specifying the block_size.
+     *      block_size must be >=1 and block_size must be a divisor of both the
+     *      input height and width.
+     * * 2: An optional {@link OperandType::BOOL} scalar, default to false.
+     *      Set to true to specify NCHW data layout for input0 and output0.
+     *      Available since HAL version 1.2.
+     *
+     * Outputs:
+     * * 0: The output 4-D tensor, of shape [batches, height/block_size,
+     *      width/block_size, depth_in*block_size*block_size].
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    SPACE_TO_DEPTH = @1.2::OperationType:SPACE_TO_DEPTH,
+
+    /**
+     * SVDF op is a kind of stateful layer derived from the notion that a
+     * densely connected layer that's processing a sequence of input frames can
+     * be approximated by using a singular value decomposition of each of its
+     * nodes. The implementation is based on:
+     *
+     * https://research.google.com/pubs/archive/43813.pdf
+     *
+     * P. Nakkiran, R. Alvarez, R. Prabhavalkar, C. Parada.
+     * “Compressing Deep Neural Networks using a Rank-Constrained Topology”.
+     * INTERSPEECH, 2015.
+     *
+     * It processes the incoming input using a 2-stage filtering mechanism:
+     * * stage 1 performs filtering on the "features" dimension, whose outputs
+     *   get pushed into a memory of fixed-size memory_size.
+     * * stage 2 performs filtering on the "time" dimension of the memory_size
+     *   memoized outputs of stage 1.
+     *
+     * Specifically, for rank 1, this layer implements the operation:
+     *
+     *     memory = push(conv1d(inputs, weights_feature, feature_dim,
+     *                          "PADDING_VALID"));
+     *     outputs = activation(memory * weights_time + bias);
+     *
+     * Where:
+     * * “weights_feature” is a weights matrix that processes the inputs (by
+     *   convolving the input with every “feature filter”), and whose outputs
+     *   get pushed, stacked in order, into the fixed-size “memory” (the oldest
+     *   entry gets dropped);
+     * * “weights_time” is a weights matrix that processes the “memory” (by a
+     *   batched matrix multiplication on the num_units);
+     * * “bias” is an optional bias vector (added to each output vector in the
+     *   batch); and
+     * * “activation” is the function passed as the “fused_activation_function”
+     *   argument (if not “NONE”).
+     *
+     * Each rank adds a dimension to the weights matrices by means of stacking
+     * the filters.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * All input tensors must be the same type.
+     *
+     * Inputs:
+     * * 0: input.
+     *      A 2-D tensor of shape [batch_size, input_size], where “batch_size”
+     *      corresponds to the batching dimension, and “input_size” is the size
+     *      of the input.
+     * * 1: weights_feature.
+     *      A 2-D tensor of shape [num_units, input_size], where “num_units”
+     *      corresponds to the number of units.
+     * * 2: weights_time.
+     *      A 2-D tensor of shape [num_units, memory_size], where “memory_size”
+     *      corresponds to the fixed-size of the memory.
+     * * 3: bias.
+     *      An optional 1-D tensor of shape [num_units].
+     * * 4: state (in).
+     *      A 2-D tensor of shape [batch_size, (memory_size - 1) * num_units * rank].
+     * * 5: rank.
+     *      The rank of the SVD approximation.
+     * * 6: fused_activation_function.
+     *      An optional {@link FusedActivationFunc} value indicating the
+     *      activation function. If “NONE” is specified then it results in a
+     *      linear activation.
+     *
+     * Outputs:
+     * * 0: state (out).
+     *      A 2-D tensor of the same {@link OperandType} as the inputs, with shape
+     *      [batch_size, (memory_size - 1) * num_units * rank].
+     * * 1: output.
+     *      A 2-D tensor of the same {@link OperandType} as the inputs, with shape
+     *      [batch_size, num_units].
+     */
+    SVDF = @1.2::OperationType:SVDF,
+
+    /**
+     * Computes hyperbolic tangent of input tensor element-wise.
+     *
+     * The output is calculated using this formula:
+     *
+     *     output = tanh(input)
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM} (since HAL version 1.2)
+     *
+     * Supported tensor rank: up to 4.
+     *
+     * Inputs:
+     * * 0: A tensor, specifying the input.
+     *      Since HAL version 1.2, this tensor may be zero-sized.
+     *
+     * Outputs:
+     * * 0: The output tensor of same shape as input0.
+     *      For {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      the scale must be 1.f / 128 and the zeroPoint must be 128.
+     */
+    TANH = @1.2::OperationType:TANH,
+
+    /**
+     * BatchToSpace for N-dimensional tensors.
+     *
+     * This operation reshapes the batch dimension (dimension 0) into M + 1
+     * dimensions of shape block_shape + [batch], interleaves these blocks back
+     * into the grid defined by the spatial dimensions [1, ..., M], to obtain a
+     * result with the same rank as the input.
+     *
+     * This is the reverse of SpaceToBatch.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     * NCHW is supported since HAL version 1.2.
+     *
+     * Inputs:
+     * * 0: An n-D tensor, specifying the tensor to be reshaped
+     * * 1: A 1-D Tensor of {@link OperandType::TENSOR_INT32}, the block
+     *      sizes for each spatial dimension of the input tensor. All values
+     *      must be >= 1.
+     * * 2: An optional {@link OperandType::BOOL} scalar, default to false.
+     *      Set to true to specify NCHW data layout for input0 and output0.
+     *      Available since API level 29.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    BATCH_TO_SPACE_ND = @1.2::OperationType:BATCH_TO_SPACE_ND,
+
+    /**
+     * Element-wise division of two tensors.
+     *
+     * Takes two input tensors of identical {@link OperandType} and compatible
+     * dimensions. The output is the result of dividing the first input tensor
+     * by the second, optionally modified by an activation function.
+     *
+     * Two dimensions are compatible when:
+     *     1. they are equal, or
+     *     2. one of them is 1
+     *
+     * The size of the output is the maximum size along each dimension of the
+     * input operands. It starts with the trailing dimensions, and works its way
+     * forward.
+     *
+     * Example:
+     *     input1.dimension =    {4, 1, 2}
+     *     input2.dimension = {5, 4, 3, 1}
+     *     output.dimension = {5, 4, 3, 2}
+     *
+     * Since HAL version 1.2, generic zero-sized input tensor is supported. Zero
+     * dimension is only compatible with 0 or 1. The size of the output
+     * dimension is zero if either of corresponding input dimension is zero.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: An n-D tensor, specifying the first input.
+     * * 1: A tensor of the same {@link OperandType}, and compatible dimensions
+     *      as input0.
+     * * 2: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0.
+     */
+    DIV = @1.2::OperationType:DIV,
+
+    /**
+     * Computes the mean of elements across dimensions of a tensor.
+     *
+     * Reduces the input tensor along the given dimensions to reduce. Unless
+     * keep_dims is true, the rank of the tensor is reduced by 1 for each entry
+     * in axis. If keep_dims is true, the reduced dimensions are retained with
+     * length 1.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: A tensor, specifying the input.
+     * * 1: A 1-D Tensor of {@link OperandType::TENSOR_INT32}. The dimensions
+     *      to reduce. Must be in the range
+     *      [-rank(input_tensor), rank(input_tensor)).
+     *
+     *      NOTE: When the operation was introduced, the documentation
+     *      incorrectly stated that if dimensions were empty, the operation
+     *      would reduce across all dimensions. This behavior was never
+     *      implemented.
+     *
+     * * 2: An {@link OperandType::INT32} scalar, keep_dims. If positive,
+     *      retains reduced dimensions with length 1.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be same as input0.
+     */
+    MEAN = @1.2::OperationType:MEAN,
+
+    /**
+     * Pads a tensor.
+     *
+     * This operation pads a tensor according to the specified paddings.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *   (full support since HAL version 1.2, see the output section)
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: An n-D tensor, specifying the tensor to be padded.
+     * * 1: A 2-D Tensor of {@link OperandType::TENSOR_INT32}, the paddings
+     *      for each spatial dimension of the input tensor. The shape of the
+     *      tensor must be {rank(input0), 2}.
+     *      padding[i, 0] specifies the number of elements to be padded in the
+     *      front of dimension i.
+     *      padding[i, 1] specifies the number of elements to be padded after the
+     *      end of dimension i.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0. The
+     *      output tensor has the same rank as input0, and each
+     *      dimension of the output tensor has the same size as the
+     *      corresponding dimension of the input tensor plus the size
+     *      of the padding:
+     *          output0.dimension[i] =
+     *              padding[i, 0] + input0.dimension[i] + padding[i, 1]
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     *
+     *      NOTE: Before HAL version 1.2, the pad value for
+     *      {@link OperandType::TENSOR_QUANT8_ASYMM} is undefined.
+     *      Since HAL version 1.2, the pad value is always the logical zero.
+     */
+    PAD = @1.2::OperationType:PAD,
+
+    /**
+     * SpaceToBatch for N-Dimensional tensors.
+     *
+     * This operation divides "spatial" dimensions [1, ..., M] of the input into
+     * a grid of blocks of shape block_shape, and interleaves these blocks with
+     * the "batch" dimension (0) such that in the output, the spatial dimensions
+     * [1, ..., M] correspond to the position within the grid, and the batch
+     * dimension combines both the position within a spatial block and the
+     * original batch position. Prior to division into blocks, the spatial
+     * dimensions of the input are optionally zero padded according to paddings.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *   (full support since HAL version 1.2, see the output section)
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     * NCHW is supported since HAL version 1.2.
+     *
+     * Inputs:
+     * * 0: An n-D tensor, specifying the input.
+     * * 1: A 1-D Tensor of {@link OperandType::TENSOR_INT32}, the block
+     *      sizes for each spatial dimension of the input tensor. All values
+     *      must be >= 1.
+     * * 2: A 2-D Tensor of {@link OperandType::TENSOR_INT32}, the paddings
+     *      for each spatial dimension of the input tensor. All values must be
+     *      >= 0. The shape of the tensor must be {M, 2}, where M is the number
+     *      of spatial dimensions.
+     *      padding[i, 0] specifies the number of element to be padded in the
+     *      front of dimension i.
+     *      padding[i, 1] specifies the number of element to be padded after the
+     *      end of dimension i.
+     * * 3: An optional {@link OperandType::BOOL} scalar, default to false.
+     *      Set to true to specify NCHW data layout for input0 and output0.
+     *      Available since HAL version 1.2.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     *
+     *      NOTE: Before HAL version 1.2, the pad value for
+     *      {@link OperandType::TENSOR_QUANT8_ASYMM} is undefined.
+     *      Since HAL version 1.2, the pad value is always the logical zero.
+     */
+    SPACE_TO_BATCH_ND = @1.2::OperationType:SPACE_TO_BATCH_ND,
+
+    /**
+     * Removes dimensions of size 1 from the shape of a tensor.
+     *
+     * Given a tensor input, this operation returns a tensor of the same
+     * {@link OperandType} with all dimensions of size 1 removed. If you don't
+     * want to remove all size 1 dimensions, you can remove specific size 1
+     * dimensions by specifying the axes (input1).
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: An n-D tensor, the tensor to be squeezed.
+     * * 1: An optional 1-D tensor of {@link OperandType::TENSOR_INT32}. The
+     *      dimensions to squeeze. If specified only squeezes the dimensions
+     *      listed. Otherwise, squeezes all dimensions. The dimension index
+     *      starts at 0. An error must be reported if squeezing a dimension that
+     *      is not 1.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0. Contains the
+     *      same data as input, but has one or more dimensions of size 1
+     *      removed.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    SQUEEZE = @1.2::OperationType:SQUEEZE,
+
+    /**
+     * Extracts a strided slice of a tensor.
+     *
+     * Roughly speaking, this op extracts a slice of size (end - begin) / stride
+     * from the given input tensor. Starting at the location specified by begin
+     * the slice continues by adding stride to the index until all dimensions
+     * are not less than end. Note that a stride can be negative, which causes a
+     * reverse slice.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: An n-D tensor, specifying the tensor to be sliced.
+     * * 1: begin, a 1-D tensor of {@link OperandType::TENSOR_INT32}. The
+     *      starts of the dimensions of the input tensor to be sliced. The
+     *      length must be of rank(input0).
+     * * 2: end, a 1-D tensor of {@link OperandType::TENSOR_INT32}. The
+     *      ends of the dimensions of the input tensor to be sliced. The length
+     *      must be of rank(input0).
+     * * 3: strides, a 1-D tensor of {@link OperandType::TENSOR_INT32}. The
+     *      strides of the dimensions of the input tensor to be sliced. The
+     *      length must be of rank(input0). The entries must be non-zero.
+     * * 4: begin_mask, an {@link OperandType::INT32} scalar. If the ith bit
+     *      of begin_mask is set, begin[i] is ignored and the fullest possible
+     *      range in that dimension is used instead.
+     * * 5: end_mask, an {@link OperandType::INT32} scalar. If the ith bit of
+     *      end_mask is set, end[i] is ignored and the fullest possible range in
+     *      that dimension is used instead.
+     * * 6: shrink_axis_mask, an {@link OperandType::INT32} scalar. If the
+     *      ith bit of shrink_axis_mask is set, the ith dimension specification
+     *      shrinks the dimensionality by 1, taking on the value at index
+     *      begin[i]. In this case, the ith specification must define a
+     *      slice of size 1, e.g. begin[i] = x, end[i] = x + 1.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0 and rank (n - k),
+     *      where k is the number of bits set in shrink_axis_mask.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    STRIDED_SLICE = @1.2::OperationType:STRIDED_SLICE,
+
+    /**
+     * Element-wise subtraction of two tensors.
+     *
+     * Takes two input tensors of identical {@link OperandType} and compatible
+     * dimensions. The output is the result of subtracting the second input
+     * tensor from the first one, optionally modified by an activation function.
+     *
+     * Two dimensions are compatible when:
+     *     1. they are equal, or
+     *     2. one of them is 1
+     *
+     * The size of the output is the maximum size along each dimension of the
+     * input operands. It starts with the trailing dimensions, and works its way
+     * forward.
+     *
+     * Example:
+     *     input1.dimension =    {4, 1, 2}
+     *     input2.dimension = {5, 4, 3, 1}
+     *     output.dimension = {5, 4, 3, 2}
+     *
+     * Since HAL version 1.2, generic zero-sized input tensor is supported. Zero
+     * dimension is only compatible with 0 or 1. The size of the output
+     * dimension is zero if either of corresponding input dimension is zero.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM} (since HAL version 1.2)
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: An n-D tensor, specifying the first input.
+     * * 1: A tensor of the same {@link OperandType}, and compatible dimensions
+     *      as input0.
+     * * 2: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint can be different from inputs' scale and zeroPoint.
+     */
+    SUB = @1.2::OperationType:SUB,
+
+    /**
+     * Transposes the input tensor, permuting the dimensions according to the
+     * perm tensor.
+     *
+     * The returned tensor's dimension i corresponds to the input dimension
+     * perm[i]. If perm is not given, it is set to (n-1...0), where n is the
+     * rank of the input tensor. Hence by default, this operation performs a
+     * regular matrix transpose on 2-D input Tensors.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16} (since HAL version 1.2)
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: An n-D tensor, specifying the tensor to be transposed.
+     *      Since HAL version 1.2, this tensor may be zero-sized.
+     * * 1: An optional 1-D Tensor of {@link OperandType::TENSOR_INT32},
+     *      the permutation of the dimensions of the input tensor.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    TRANSPOSE = @1.2::OperationType:TRANSPOSE,
+
+    /**
+     * Computes the absolute value of a tensor, element-wise.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: from 1.
+     *
+     * Inputs:
+     * * 0: A tensor.
+     *
+     * Outputs:
+     * * 0: The output tensor of same shape as input0.
+     */
+    ABS = @1.2::OperationType:ABS,
+
+    /**
+     * Returns the index of the largest element along an axis.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * Inputs:
+     * * 0: An n-D tensor specifying the input. Must be non-empty.
+     * * 1: An {@link OperandType::INT32} scalar specifying the axis to
+     *      reduce across. Negative index is used to specify axis from the
+     *      end (e.g. -1 for the last axis). Must be in the range [-n, n).
+     *
+     * Outputs:
+     * * 0: An (n - 1)-D {@link OperandType::TENSOR_INT32} tensor.
+     */
+    // There is no underscore in ARG_MAX to avoid name conflict with
+    // the macro defined in libc/kernel/uapi/linux/limits.h.
+    ARGMAX = @1.2::OperationType:ARGMAX,
+
+    /**
+     * Returns the index of the smallest element along an axis.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * Inputs:
+     * * 0: An n-D tensor specifying the input. Must be non-empty.
+     * * 1: An {@link OperandType::INT32} scalar specifying the axis to
+     *      reduce across. Negative index is used to specify axis from the
+     *      end (e.g. -1 for the last axis). Must be in the range [-n, n).
+     *
+     * Outputs:
+     * * 0: An (n - 1)-D {@link OperandType::TENSOR_INT32} tensor.
+     */
+    ARGMIN = @1.2::OperationType:ARGMIN,  // See ARGMAX for naming discussion.
+
+    /**
+     * Transform axis-aligned bounding box proposals using bounding box deltas.
+     *
+     * Given the positions of bounding box proposals and the corresponding
+     * bounding box deltas for each class, return the refined bounding box
+     * regions. The resulting bounding boxes are cliped against the edges of
+     * the image.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT16_ASYMM}
+     *
+     * Inputs:
+     * * 0: A 2-D Tensor of shape [num_rois, 4], specifying the locations of the
+     *      bounding box proposals, each line with format [x1, y1, x2, y2].
+     *      For tensor of type {@link OperandType::TENSOR_QUANT16_ASYMM},
+     *      the zeroPoint must be 0 and the scale must be 0.125. Zero num_rois
+     *      is supported for this tensor.
+     * * 1: A 2-D Tensor of shape [num_rois, num_classes * 4], specifying the
+     *      bounding box delta for each region of interest and each class. The
+     *      bounding box deltas are organized in the following order
+     *      [dx, dy, dw, dh], where dx and dy is the relative correction factor
+     *      for the center position of the bounding box with respect to the width
+     *      and height, dw and dh is the log-scale relative correction factor
+     *      for the width and height. For input0 of type
+     *      {@link OperandType::TENSOR_QUANT16_ASYMM}, this tensor should be
+     *      of {@link OperandType::TENSOR_QUANT8_ASYMM}. Zero num_rois is
+     *      supported for this tensor.
+     * * 2: An 1-D {@link OperandType::TENSOR_INT32} tensor, of shape
+     *      [num_rois], specifying the batch index of each box. Boxes with
+     *      the same batch index are grouped together. Zero num_rois is
+     *      supported for this tensor.
+     * * 3: A 2-D Tensor of shape [batches, 2], specifying the information of
+     *      each image in the batch, each line with format
+     *      [image_height, image_width].
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0, with shape
+     *      [num_rois, num_classes * 4], specifying the coordinates of each
+     *      output bounding box for each class, with format [x1, y1, x2, y2].
+     *      For type of {@link OperandType::TENSOR_QUANT16_ASYMM}, the
+     *      scale must be 0.125 and the zero point must be 0.
+     */
+    AXIS_ALIGNED_BBOX_TRANSFORM = @1.2::OperationType:AXIS_ALIGNED_BBOX_TRANSFORM,
+
+    /**
+     * Performs a forward LSTM on the input followed by a backward LSTM.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: 3, either time-major or batch-major.
+     *
+     * All input and output tensors must be of the same type.
+     *
+     *
+     * Inputs:
+     * * 0: The input.
+     *      A 3-D tensor of shape:
+     *        If time-major: [max_time, batch_size, input_size]
+     *        If batch-major: [batch_size, max_time, input_size]
+     *      where "max_time" is the number of timesteps (sequence length),
+     *      "batch_size" corresponds to the batching dimension, and
+     *      "input_size" is the size of the input.
+     * * 1: The forward input-to-input weights. Optional.
+     *      A 2-D tensor of shape [fw_num_units, input_size], where “fw_num_units”
+     *      corresponds to the number of forward cell units.
+     * * 2: The forward input-to-forget weights.
+     *      A 2-D tensor of shape [fw_num_units, input_size].
+     * * 3: The forward input-to-cell weights.
+     *      A 2-D tensor of shape [fw_num_units, input_size].
+     * * 4: The forward input-to-output weights.
+     *      A 2-D tensor of shape [fw_num_units, input_size].
+     * * 5: The forward recurrent-to-input weights. Optional.
+     *      A 2-D tensor of shape [fw_num_units, fw_output_size], where “fw_output_size”
+     *      corresponds to either the number of cell units (i.e., fw_num_units),
+     *      or the second dimension of the “fw_projection_weights”, if defined.
+     * * 6: The forward recurrent-to-forget weights.
+     *      A 2-D tensor of shape [fw_num_units, fw_output_size].
+     * * 7: The forward recurrent-to-cell weights.
+     *      A 2-D tensor of shape [fw_num_units, fw_output_size].
+     * * 8: The forward recurrent-to-output weights.
+     *      A 2-D tensor of shape [fw_num_units, fw_output_size].
+     * * 9: The forward cell-to-input weights. Optional.
+     *      A 1-D tensor of shape [fw_num_units].
+     * * 10: The forward cell-to-forget weights. Optional.
+     *       A 1-D tensor of shape [fw_num_units].
+     * * 11: The forward cell-to-output weights. Optional.
+     *       A 1-D tensor of shape [fw_num_units].
+     * * 12: The forward input gate bias. Optional.
+     *       A 1-D tensor of shape [fw_num_units].
+     * * 13: The forward forget gate bias.
+     *       A 1-D tensor of shape [fw_num_units].
+     * * 14: The forward cell gate bias.
+     *       A 1-D tensor of shape [fw_num_units].
+     * * 15: The forward output gate bias.
+     *       A 1-D tensor of shape [fw_num_units].
+     * * 16: The forward projection weights. Optional.
+     *       A 2-D tensor of shape [fw_output_size, fw_num_units].
+     * * 17: The forward projection bias. Optional.
+     *       A 1-D tensor of shape [fw_output_size].
+     * * 18: The backward input-to-input weights. Optional.
+     *       A 2-D tensor of shape [bw_num_units, input_size], where “bw_num_units”
+     *       corresponds to the number of backward cell units.
+     * * 19: The backward input-to-forget weights.
+     *       A 2-D tensor of shape [bw_num_units, input_size].
+     * * 20: The backward input-to-cell weights.
+     *       A 2-D tensor of shape [bw_num_units, input_size].
+     * * 21: The backward input-to-output weights.
+     *       A 2-D tensor of shape [bw_num_units, input_size].
+     * * 22: The backward recurrent-to-input weights. Optional.
+     *       A 2-D tensor of shape [bw_num_units, bw_output_size], where “bw_output_size”
+     *       corresponds to either the number of cell units (i.e., “bw_num_units”),
+     *       or the second dimension of the “bw_projection_weights”, if defined.
+     * * 23: The backward recurrent-to-forget weights.
+     *       A 2-D tensor of shape [bw_num_units, bw_output_size].
+     * * 24: The backward recurrent-to-cell weights.
+     *       A 2-D tensor of shape [bw_num_units, bw_output_size].
+     * * 25: The backward recurrent-to-output weights.
+     *       A 2-D tensor of shape [bw_num_units, bw_output_size].
+     * * 26: The backward cell-to-input weights. Optional.
+     *       A 1-D tensor of shape [bw_num_units].
+     * * 27: The backward cell-to-forget weights. Optional.
+     *       A 1-D tensor of shape [bw_num_units].
+     * * 28: The backward cell-to-output weights. Optional.
+     *       A 1-D tensor of shape [bw_num_units].
+     * * 29: The backward input gate bias. Optional.
+     *       A 1-D tensor of shape [bw_num_units].
+     * * 30: The backward forget gate bias.
+     *       A 1-D tensor of shape [bw_num_units].
+     * * 31: The backward cell gate bias.
+     *       A 1-D tensor of shape [bw_num_units].
+     * * 32: The backward output gate bias.
+     *       A 1-D tensor of shape [bw_num_units].
+     * * 33: The backward projection weights. Optional.
+     *       A 2-D tensor of shape [bw_output_size, bw_num_units].
+     * * 34: The backward projection bias. Optional.
+     *       A 1-D tensor of shape [bw_output_size].
+     * * 35: The forward input activation state.
+     *       A 2-D tensor of shape [batch_size, bw_output_size].
+     * * 36: The forward input cell state.
+     *       A 2-D tensor of shape [batch_size, bw_num_units].
+     * * 37: The backward input activation state.
+     *       A 2-D tensor of shape [batch_size, bw_output_size].
+     * * 38: The backward input cell state.
+     *       A 2-D tensor of shape [batch_size, bw_num_units].
+     * * 39: The auxiliary input. Optional.
+     *       A 3-D tensor of shape [max_time, batch_size, input_size], where “batch_size”
+     *       corresponds to the batching dimension, and “input_size” is the size
+     *       of the input.
+     * * 40: The forward auxiliary input-to-input weights. Optional.
+     *       A 2-D tensor of shape [fw_num_units, input_size].
+     * * 41: The forward auxiliary input-to-forget weights. Optional.
+     *       A 2-D tensor of shape [fw_num_units, input_size].
+     * * 42: The forward auxiliary input-to-cell weights. Optional.
+     *       A 2-D tensor of shape [fw_num_units, input_size].
+     * * 43: The forward auxiliary input-to-output weights. Optional.
+     *       A 2-D tensor of shape [fw_num_units, input_size].
+     * * 44: The backward auxiliary input-to-input weights. Optional.
+     *       A 2-D tensor of shape [bw_num_units, input_size].
+     * * 45: The backward auxiliary input-to-forget weights. Optional.
+     *       A 2-D tensor of shape [bw_num_units, input_size].
+     * * 46: The backward auxiliary input-to-cell weights. Optional.
+     *       A 2-D tensor of shape [bw_num_units, input_size].
+     * * 47: The backward auxiliary input-to-output weights. Optional.
+     *       A 2-D tensor of shape [bw_num_units, input_size].
+     * * 48: The activation function.
+     *       A value indicating the activation function:
+     *       <ul>
+     *       <li>0: None;
+     *       <li>1: Relu;
+     *       <li>3: Relu6;
+     *       <li>4: Tanh;
+     *       <li>6: Sigmoid.
+     *       </ul>
+     * * 49: The clipping threshold for the cell state, such
+     *       that values are bound within [-cell_clip, cell_clip]. If set to 0.0
+     *       then clipping is disabled.
+     *       If all the input tensors have type {@link OperandType::TENSOR_FLOAT32},
+     *       this scalar must be of the type {@link OperandType::FLOAT32},
+     *       otherwise if all the input tensors have the type {@link OperandType::TENSOR_FLOAT16},
+     *       this scalar must be of type {@link OperandType::FLOAT16}.
+     * * 50: The clipping threshold for the output from the
+     *       projection layer, such that values are bound within
+     *       [-proj_clip, proj_clip]. If set to 0.0 then clipping is disabled.
+     *       If all the input tensors have type {@link OperandType::TENSOR_FLOAT32},
+     *       this scalar must be of the type {@link OperandType::FLOAT32},
+     *       otherwise if all the input tensors have the type {@link OperandType::TENSOR_FLOAT16},
+     *       this scalar must be of type {@link OperandType::FLOAT16}.
+     * * 51: merge_outputs
+     *       An {@link OperandType::BOOL} scalar specifying if the outputs
+     *       from forward and backward cells should be merged.
+     * * 52: time_major
+     *       An {@link OperandType::BOOL} scalar specifying the shape format
+     *       of input and output tensors.
+     * * 53: The forward input layer normalization weights. Optional.
+     *       A 1-D tensor of shape [fw_num_units]. Used to rescale normalized inputs
+     *       to activation at input gate.
+     * * 54: The forward forget layer normalization weights. Optional.
+     *       A 1-D tensor of shape [fw_num_units]. Used to rescale normalized inputs
+     *       to activation at forget gate.
+     * * 55: The forward cell layer normalization weights. Optional.
+     *       A 1-D tensor of shape [fw_num_units]. Used to rescale normalized inputs
+     *       to activation at cell gate.
+     * * 56: The forward output layer normalization weights. Optional.
+     *       A 1-D tensor of shape [fw_num_units]. Used to rescale normalized inputs
+     *       to activation at output gate.
+     * * 57: The backward input layer normalization weights. Optional.
+     *       A 1-D tensor of shape [bw_num_units]. Used to rescale normalized inputs
+     *       to activation at input gate.
+     * * 58: The backward forget layer normalization weights. Optional.
+     *       A 1-D tensor of shape [bw_num_units]. Used to rescale normalized inputs
+     *       to activation at forget gate.
+     * * 59: The backward cell layer normalization weights. Optional.
+     *       A 1-D tensor of shape [bw_num_units]. Used to rescale normalized inputs
+     *       to activation at cell gate.
+     * * 60: The backward output layer normalization weights. Optional.
+     *       A 1-D tensor of shape [bw_num_units]. Used to rescale normalized inputs
+     *       to activation at output gate.
+     *
+     * Outputs:
+     * * 0: The forward output.
+     *      A 3-D tensor of shape:
+     *        If time-major and not merge_outputs:
+     *          [max_time, batch_size, fw_output_size]
+     *        If time-major and merge_outputs:
+     *          [max_time, batch_size, fw_output_size + bw_output_size]
+     *        If batch-major and not merge_outputs:
+     *          [batch_size, max_time, fw_output_size]
+     *        If batch-major and merge_outputs:
+     *          [batch_size, max_time, fw_output_size + bw_output_size]
+     * * 1: The backward output.  Unused if merge_outputs is true.
+     *      A 3-D tensor of shape:
+     *        If time-major: [max_time, batch_size, bw_output_size]
+     *        If batch-major: [batch_size, max_time, bw_output_size]
+     */
+    BIDIRECTIONAL_SEQUENCE_LSTM = @1.2::OperationType:BIDIRECTIONAL_SEQUENCE_LSTM,
+
+    /**
+     * A recurrent neural network layer that applies a basic RNN cell to a
+     * sequence of inputs in forward and backward directions.
+     *
+     * This Op unrolls the input along the sequence dimension, and implements
+     * the following operation for each element in the sequence s =
+     * 1...sequence_length:
+     *   fw_outputs[s] = fw_state = activation(inputs[s] * fw_input_weights’ +
+     *          fw_state * fw_recurrent_weights’ + fw_bias)
+     *
+     * And for each element in sequence t = sequence_length : 1
+     *   bw_outputs[t] = bw_state = activation(inputs[t] * bw_input_weights’ +
+     *          bw_state * bw_recurrent_weights’ + bw_bias)
+     *
+     * Where:
+     * * “{fw,bw}_input_weights” is a weight matrix that multiplies the inputs;
+     * * “{fw,bw}_recurrent_weights” is a weight matrix that multiplies the
+     *    current “state” which itself is the output from the previous time step
+     *    computation;
+     * * “{fw,bw}_bias” is a bias vector (added to each output vector in the
+     *    batch);
+     * * “activation” is the function passed as the “fused_activation_function”
+     *   argument (if not “NONE”).
+     *
+     * The op also supports an auxiliary input. Regular cell feeds one input
+     * into the two RNN cells in the following way:
+     *
+     *       INPUT  (INPUT_REVERSED)
+     *         |         |
+     *    ---------------------
+     *    | FW_RNN     BW_RNN |
+     *    ---------------------
+     *         |         |
+     *      FW_OUT     BW_OUT
+     *
+     * An op with an auxiliary input takes two inputs and feeds them into the
+     * RNN cells in the following way:
+     *
+     *       AUX_INPUT   (AUX_INPUT_REVERSED)
+     *           |             |
+     *     INPUT | (INPUT_R'D.)|
+     *       |   |       |     |
+     *    -----------------------
+     *    |  \  /        \    / |
+     *    | FW_RNN       BW_RNN |
+     *    -----------------------
+     *         |           |
+     *      FW_OUT      BW_OUT
+     *
+     * While stacking this op on top of itself, this allows to connect both
+     * forward and backward outputs from previous cell to the next cell's
+     * inputs.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * The input tensors must all be the same type.
+     *
+     * Inputs:
+     * * 0: input.
+     *      A 3-D tensor. The shape is defined by the input 6 (timeMajor). If
+     *      it is set to true, then the input has a shape [maxTime, batchSize,
+     *      inputSize], otherwise the input has a shape [batchSize, maxTime,
+     *      inputSize].
+     * * 1: fwWeights.
+     *      A 2-D tensor of shape [fwNumUnits, inputSize].
+     * * 2: fwRecurrentWeights.
+     *      A 2-D tensor of shape [fwNumUnits, fwNumUnits].
+     * * 3: fwBias.
+     *      A 1-D tensor of shape [fwNumUnits].
+     * * 4: fwHiddenState.
+     *      A 2-D tensor of shape [batchSize, fwNumUnits]. Specifies a hidden
+     *      state input for the first time step of the computation.
+     * * 5: bwWeights.
+     *      A 2-D tensor of shape [bwNumUnits, inputSize].
+     * * 6: bwRecurrentWeights.
+     *      A 2-D tensor of shape [bwNumUnits, bwNumUnits].
+     * * 7: bwBias.
+     *      A 1-D tensor of shape [bwNumUnits].
+     * * 8: bwHiddenState
+     *      A 2-D tensor of shape [batchSize, bwNumUnits]. Specifies a hidden
+     *      state input for the first time step of the computation.
+     * * 9: auxInput.
+     *      A 3-D tensor. The shape is the same as of the input 0.
+     * * 10:fwAuxWeights.
+     *      A 2-D tensor of shape [fwNumUnits, inputSize].
+     * * 11:bwAuxWeights.
+     *      A 2-D tensor of shape [bwNumUnits, inputSize].
+     * * 12:fusedActivationFunction.
+     *      A {@link FusedActivationFunc} value indicating the activation function. If
+     *      “NONE” is specified then it results in a linear activation.
+     * * 13:timeMajor
+     *      An {@link OperandType::BOOL} scalar specifying the shape format
+     *      of input and output tensors.
+     * * 14:mergeOutputs
+     *      An {@link OperandType::BOOL} scalar specifying if the outputs
+     *      from forward and backward cells are separate (if set to false) or
+     *      concatenated (if set to true).
+     * Outputs:
+     * * 0: fwOutput.
+     *      A 3-D tensor. The first two dimensions of the shape are defined by
+     *      the input 6 (timeMajor) and the third dimension is defined by the
+     *      input 14 (mergeOutputs). If timeMajor is set to true, then the first
+     *      two dimensions are [maxTime, batchSize], otherwise they are set to
+     *      [batchSize, maxTime]. If mergeOutputs is set to true, then the third
+     *      dimension is equal to (fwNumUnits + bwNumUnits), otherwise it is set
+     *      to fwNumUnits.
+     * * 1: bwOutput.
+     *      A 3-D tensor. If the input 14 (mergeOutputs) is set to true, then
+     *      this tensor is not produced. The shape is defined by the input 6
+     *      (timeMajor). If it is set to true, then the shape is set to
+     *      [maxTime, batchSize, bwNumUnits], otherwise the shape is set to
+     *      [batchSize, maxTime, bwNumUnits].
+     */
+    BIDIRECTIONAL_SEQUENCE_RNN = @1.2::OperationType:BIDIRECTIONAL_SEQUENCE_RNN,
+
+    /**
+     * Greedily selects a subset of bounding boxes in descending order of score.
+     *
+     * This op applies NMS algorithm to each class. In each loop of execution,
+     * the box with maximum score gets selected and removed from the pending set.
+     * The scores of the rest of boxes are lowered according to the
+     * intersection-over-union (IOU) overlapping with the previously selected
+     * boxes and a specified NMS kernel method. Any boxes with score less
+     * than a threshold are removed from the pending set.
+     *
+     * Three NMS kernels are supported:
+     * * Hard:     score_new = score_old * (1 if IoU < threshold else 0)
+     * * Linear:   score_new = score_old * (1 if IoU < threshold else 1 - IoU)
+     * * Gaussian: score_new = score_old * exp(- IoU^2 / sigma)
+     *
+     * Axis-aligned bounding boxes are represented by its upper-left corner
+     * coordinate (x1,y1) and lower-right corner coordinate (x2,y2). A valid
+     * bounding box should satisfy x1 <= x2 and y1 <= y2.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Inputs:
+     * * 0: A 2-D Tensor of shape [num_rois, num_classes], specifying the score
+     *      of each bounding box proposal. The boxes are grouped by batches in the
+     *      first dimension. Zero num_rois is supported for this tensor.
+     * * 1: A 2-D Tensor specifying the bounding boxes of shape
+     *      [num_rois, num_classes * 4], organized in the order [x1, y1, x2, y2].
+     *      The boxes are grouped by batches in the first dimension. The sequential
+     *      order of the boxes corresponds with input0. For input0 of type
+     *      {@link OperandType::TENSOR_QUANT8_ASYMM}, this tensor should be of
+     *      {@link OperandType::TENSOR_QUANT16_ASYMM}, with zeroPoint of 0 and
+     *      scale of 0.125. Zero num_rois is supported for this tensor.
+     * * 2: A 1-D {@link OperandType::TENSOR_INT32} tensor, of shape
+     *      [num_rois], specifying the batch index of each box. Boxes with
+     *      the same batch index are grouped together.
+     * * 3: An {@link OperandType::FLOAT32} scalar, score_threshold. Boxes
+     *      with scores lower than the threshold are filtered before sending
+     *      to the NMS algorithm.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the maximum
+     *      number of selected bounding boxes for each image. Set to a negative
+     *      value for unlimited number of output bounding boxes.
+     * * 5: An {@link OperandType::INT32} scalar, specifying the NMS
+     *      kernel method, options are 0:hard, 1:linear, 2:gaussian.
+     * * 6: An {@link OperandType::FLOAT32} scalar, specifying the IoU
+     *      threshold in hard and linear NMS kernel. This field is ignored if
+     *      gaussian kernel is selected.
+     * * 7: An {@link OperandType::FLOAT32} scalar, specifying the sigma in
+     *      gaussian NMS kernel. This field is ignored if gaussian kernel is
+     *      not selected.
+     * * 8: An {@link OperandType::FLOAT32} scalar, nms_score_threshold.
+     *      Boxes with scores lower than the threshold are dropped during the
+     *      score updating phase in soft NMS.
+     *
+     * Outputs:
+     * * 0: A 1-D Tensor of the same {@link OperandType} as input0, with shape
+     *      [num_output_rois], specifying the score of each output box. The boxes
+     *      are grouped by batches, but the sequential order in each batch is not
+     *      guaranteed. For type of {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      the scale and zero point must be the same as input0.
+     * * 1: A 2-D Tensor of the same {@link OperandType} as input1, with shape
+     *      [num_output_rois, 4], specifying the coordinates of each
+     *      output bounding box with the same format as input1. The sequential
+     *      order of the boxes corresponds with output0. For type of
+     *      {@link OperandType::TENSOR_QUANT16_ASYMM}, the scale must be
+     *      0.125 and the zero point must be 0.
+     * * 2: A 1-D {@link OperandType::TENSOR_INT32} tensor, of shape
+     *      [num_output_rois], specifying the class of each output box. The
+     *      sequential order of the boxes corresponds with output0.
+     * * 3: A 1-D {@link OperandType::TENSOR_INT32} tensor, of shape
+     *      [num_output_rois], specifying the batch index of each box. Boxes
+     *      with the same batch index are grouped together.
+     */
+    BOX_WITH_NMS_LIMIT = @1.2::OperationType:BOX_WITH_NMS_LIMIT,
+
+    /**
+     * Casts a tensor to a new type.
+     *
+     * This operation ignores the scale and zeroPoint of quanized tensors,
+     * e.g. it treats a {@link OperandType::TENSOR_QUANT8_ASYMM} input
+     * as a tensor of uint8 values.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * Inputs:
+     * * 0: A tensor.
+     *
+     * Outputs:
+     * * 0: A tensor with the same shape as input0.
+     */
+    CAST = @1.2::OperationType:CAST,
+
+    /**
+     * Shuffle the channels of the input tensor.
+     *
+     * Given an input tensor and a integer value of num_groups, CHANNEL_SHUFFLE
+     * divide the channel dimension into num_groups groups, and reorganize the
+     * channels by grouping channels with the same index in each group.
+     *
+     * Along the channel dimension, the output is calculated using this formula:
+     *
+     *     output_channel[k * num_groups + g] = input_channel[g * group_size + k]
+     *
+     * where group_size = num_channels / num_groups
+     *
+     * The number of channels must be divisible by num_groups.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: An n-D tensor, specifying the tensor to be shuffled.
+     * * 1: An {@link OperandType::INT32} scalar, specifying the number of
+     *      groups.
+     * * 2: An {@link OperandType::INT32} scalar, specifying the dimension
+     *      channel shuffle would be performed on. Negative index is used to
+     *      specify axis from the end (e.g. -1 for the last axis). Must be in
+     *      the range [-n, n).
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} and same shape as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    CHANNEL_SHUFFLE = @1.2::OperationType:CHANNEL_SHUFFLE,
+
+    /**
+     * Apply postprocessing steps to bounding box detections.
+     *
+     * Bounding box detections are generated by applying transformation on a set
+     * of predefined anchors with the bounding box deltas from bounding box
+     * regression. A final step of hard NMS is applied to limit the number of
+     * returned boxes.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Inputs:
+     * * 0: A 3-D Tensor of shape [batches, num_anchors, num_classes], specifying
+     *      the score of each anchor with each class. Class 0 for each
+     *      [batches, num_anchors, 0] is background and will be ignored.
+     * * 1: A 3-D Tensor of shape [batches, num_anchors, length_box_encoding], with
+     *      the first four values in length_box_encoding specifying the bounding
+     *      box deltas. The box deltas are encoded in the order of [dy, dx, dh, dw],
+     *      where dy and dx is the linear-scale relative correction factor for the
+     *      center position of the bounding box with respect to the width and height,
+     *      dh and dw is the log-scale relative correction factor for the width and
+     *      height. All the entries in length_box_encoding beyond the first four
+     *      values are ignored in this operation.
+     * * 2: A 2-D Tensor of shape [num_anchors, 4], specifying the shape of each
+     *      predefined anchor, with format [ctr_y, ctr_x, h, w], where ctr_y and
+     *      ctr_x are the center position of the box, and h and w are the height
+     *      and the width.
+     * * 3: An {@link OperandType::FLOAT32} scalar, specifying the scaling
+     *      factor for dy in bounding box deltas.
+     * * 4: An {@link OperandType::FLOAT32} scalar, specifying the scaling
+     *      factor for dx in bounding box deltas.
+     * * 5: An {@link OperandType::FLOAT32} scalar, specifying the scaling
+     *      factor for dh in bounding box deltas.
+     * * 6: An {@link OperandType::FLOAT32} scalar, specifying the scaling
+     *      factor for dw in bounding box deltas.
+     * * 7: An {@link OperandType::BOOL} scalar, set to true to use regular
+     *      multi-class NMS algorithm that do NMS separately for each class,
+     *      set to false for a faster algorithm that only do one single NMS
+     *      using the highest class score..
+     * * 8: An {@link OperandType::INT32} scalar, max_num_detections, specifying
+     *      the maximum number of boxes for the output. Boxes with the lowest
+     *      scores are discarded to meet the limit.
+     * * 9: An {@link OperandType::INT32} scalar, only used when input7 is
+     *      set to false, specifying the maximum number of classes per detection.
+     * * 10: An {@link OperandType::INT32} scalar, only used when input7 is
+     *       set to true, specifying the maximum number of detections when
+     *       applying NMS algorithm for each single class.
+     * * 11: A scalar, score_threshold. Boxes with scores lower than the
+     *       threshold are filtered before sending to the NMS algorithm. The
+     *       scalar must be of {@link OperandType::FLOAT16} if input0 is of
+     *       {@link OperandType::TENSOR_FLOAT16} and of
+     *       {@link OperandType::FLOAT32} if input0 is of
+     *       {@link OperandType::TENSOR_FLOAT32}.
+     * * 12: A scalar, specifying the IoU threshold for hard NMS. The scalar
+     *       must be of {@link OperandType::FLOAT16} if input0 is of
+     *       {@link OperandType::TENSOR_FLOAT16} and of
+     *       {@link OperandType::FLOAT32} if input0 is of
+     *       {@link OperandType::TENSOR_FLOAT32}.
+     * * 13: An {@link OperandType::BOOL} scalar, set to true to include
+     *       background class in the list of label map for the output, set
+     *       to false to not include the background. When the background
+     *       class is included, it has label 0 and the output classes start
+     *       at 1 in the label map, otherwise, the output classes start at 0.
+     *
+     * Outputs:
+     * * 0: A 2-D tensor of the same {@link OperandType} as input0, with shape
+     *      [batches, max_num_detections], specifying the score of each output
+     *      detections.
+     * * 1: A 3-D tensor of shape [batches, max_num_detections, 4], specifying the
+     *      coordinates of each output bounding box, with format
+     *      [y1, x1, y2, x2].
+     * * 2: A 2-D {@link OperandType::TENSOR_INT32} tensor, of shape
+     *      [batches, max_num_detections], specifying the class label for each
+     *      output detection.
+     * * 3: An 1-D {@link OperandType::TENSOR_INT32} tensor, of shape [batches],
+     *      specifying the number of valid output detections for each batch.
+     */
+    DETECTION_POSTPROCESSING = @1.2::OperationType:DETECTION_POSTPROCESSING,
+
+    /**
+     * For input tensors x and y, computes x == y elementwise.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_BOOL8}
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * This operation supports broadcasting.
+     *
+     * Inputs:
+     * * 0: A tensor.
+     * * 1: A tensor of the same {@link OperandType} and dimensions compatible
+     *      with input0.
+     *
+     * Outputs:
+     * * 0: A tensor of {@link OperandType::TENSOR_BOOL8}.
+     */
+    EQUAL = @1.2::OperationType:EQUAL,
+
+    /**
+     * Computes exponential of x element-wise.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: from 1.
+     *
+     * Inputs:
+     * * 0: A tensor.
+     *
+     * Outputs:
+     * * 0: The output tensor of same shape as input0.
+     */
+    EXP = @1.2::OperationType:EXP,
+
+    /**
+     * Inserts a dimension of 1 into a tensor's shape.
+     *
+     * Given a tensor input, this operation inserts a dimension of 1 at the
+     * given dimension index of input's shape. The dimension index starts at
+     * zero; if you specify a negative dimension index, it is counted backward
+     * from the end.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * Inputs:
+     * * 0: An n-D tensor.
+     * * 1: An {@link OperandType::INT32} scalar specifying the dimension
+     *      index to expand. Must be in the range [-(n + 1), (n + 1)).
+     *
+     * Outputs:
+     * * 0: An (n + 1)-D tensor with the same {@link OperandType} and data as
+     *      input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    EXPAND_DIMS = @1.2::OperationType:EXPAND_DIMS,
+
+    /**
+     * Gathers values along an axis.
+     *
+     * Produces an output tensor with shape
+     *     input0.dimension[:axis] + indices.dimension + input0.dimension[axis + 1:]
+     * where:
+     *     # Vector indices (output is rank(input0)).
+     *     output[a_0, ..., a_n, i, b_0, ..., b_n] =
+     *       input0[a_0, ..., a_n, indices[i], b_0, ..., b_n]
+     *
+     *     # Higher rank indices (output is rank(input0) + rank(indices) - 1).
+     *     output[a_0, ..., a_n, i, ..., j, b_0, ... b_n] =
+     *       input0[a_0, ..., a_n, indices[i, ..., j], b_0, ..., b_n]
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * Inputs:
+     * * 0: An n-D tensor from which to gather values.
+     * * 1: An {@link OperandType::INT32} scalar specifying the axis.
+     *      Negative index is used to specify axis from the end
+     *      (e.g. -1 for the last axis). Must be in the range [-n, n).
+     * * 2: A k-D tensor {@link OperandType::TENSOR_INT32} of indices.
+     *      The values must be in the bounds of the corresponding dimensions
+     *      of input0.
+     *
+     * Outputs:
+     * * 0: An (n + k - 1)-D tensor with the same {@link OperandType} as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    GATHER = @1.2::OperationType:GATHER,
+
+    /**
+     * Generate aixs-aligned bounding box proposals.
+     *
+     * Bounding box proposals are generated by applying transformation on a set
+     * of predefined anchors with the bounding box deltas from bounding box
+     * regression. A final step of hard NMS is applied to limit the number of
+     * returned boxes.
+     *
+     * Axis-aligned bounding boxes are represented by its upper-left corner
+     * coordinate (x1,y1) and lower-right corner coordinate (x2,y2). A valid
+     * bounding box should satisfy x1 <= x2 and y1 <= y2.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Inputs:
+     * * 0: A 4-D Tensor specifying the score of each anchor at each
+     *      location. With "NHWC" data layout, the tensor shape is
+     *      [batches, height, width, num_anchors]. With "NCHW" data layout,
+     *      the tensor shape is [batches, num_anchors, height, width].
+     * * 1: A 4-D Tensor specifying the bounding box deltas. With "NHWC" data
+     *      layout, the tensor shape is [batches, height, width, num_anchors * 4].
+     *      With "NCHW" data layout, the tensor shape is
+     *      [batches, num_anchors * 4, height, width]. The box deltas are encoded
+     *      in the order of [dx, dy, dw, dh], where dx and dy is the linear-scale
+     *      relative correction factor for the center position of the bounding box
+     *      with respect to the width and height, dw and dh is the log-scale
+     *      relative correction factor for the width and height. The last
+     *      dimensions is the channel dimension.
+     * * 2: A 2-D Tensor of shape [num_anchors, 4], specifying the shape of each
+     *      predefined anchor, with format [x1, y1, x2, y2]. For input0 of type
+     *      {@link OperandType::TENSOR_QUANT8_ASYMM}, this tensor should be of
+     *      {@link OperandType::TENSOR_QUANT16_SYMM}, with scale of 0.125.
+     * * 3: A 2-D Tensor of shape [batches, 2], specifying the size of
+     *      each image in the batch, with format [image_height, image_width].
+     *      For input0 of type {@link OperandType::TENSOR_QUANT8_ASYMM}, this
+     *      tensor should be of {@link OperandType::TENSOR_QUANT16_SYMM}, with
+     *      scale of 0.125.
+     * * 4: An {@link OperandType::FLOAT32} scalar, specifying the ratio
+     *      from the height of original image to the height of feature map.
+     * * 5: An {@link OperandType::FLOAT32} scalar, specifying the ratio
+     *      from the width of original image to the width of feature map.
+     * * 6: An {@link OperandType::INT32} scalar, specifying the maximum
+     *      number of boxes before going into the hard NMS algorithm. Boxes
+     *      with the lowest scores are discarded to meet the limit. Set to
+     *      a non-positive value for unlimited number.
+     * * 7: An {@link OperandType::INT32} scalar, specifying the maximum
+     *      number of boxes returning from the hard NMS algorithm. Boxes
+     *      with the lowest scores are discarded to meet the limit. Set to
+     *      a non-positive value for unlimited number.
+     * * 8: An {@link OperandType::FLOAT32} scalar, specifying the IoU
+     *      threshold for hard NMS.
+     * * 9: An {@link OperandType::FLOAT32} scalar, min_size. Boxes with
+     *      height or width lower than the absolute threshold are filtered out.
+     * * 10: An {@link OperandType::BOOL} scalar, set to true to specify
+     *       NCHW data layout for input0 and input1. Set to false for NHWC.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0, of shape
+     *      [num_output_rois], specifying the score of each output box.
+     *      The boxes are grouped by batches, but the sequential order in
+     *      each batch is not guaranteed. For type of
+     *      {@link OperandType::TENSOR_QUANT8_ASYMM}, the scale and zero
+     *      point must be the same as input0.
+     * * 1: A tensor of the same {@link OperandType} as input3, of shape
+     *      [num_output_rois, 4], specifying the coordinates of each output
+     *      bounding box for each class, with format [x1, y1, x2, y2].
+     *      The sequential order of the boxes corresponds with output0.
+     *      For type of {@link OperandType::TENSOR_QUANT16_ASYMM}, the
+     *      scale must be 0.125 and the zero point must be 0.
+     * * 2: A 1-D {@link OperandType::TENSOR_INT32} tensor, of shape
+     *      [num_output_rois], specifying the batch index of each box. Boxes
+     *      with the same batch index are grouped together.
+     */
+    GENERATE_PROPOSALS = @1.2::OperationType:GENERATE_PROPOSALS,
+
+    /**
+     * For input tensors x and y, computes x > y elementwise.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_BOOL8}
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * This operation supports broadcasting.
+     *
+     * Inputs:
+     * * 0: A tensor.
+     * * 1: A tensor of the same {@link OperandType} and dimensions compatible
+     *      with input0.
+     *
+     * Outputs:
+     * * 0: A tensor of {@link OperandType::TENSOR_BOOL8}.
+     */
+    GREATER = @1.2::OperationType:GREATER,
+    /**
+     * For input tensors x and y, computes x >= y elementwise.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_BOOL8}
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * This operation supports broadcasting.
+     *
+     * Inputs:
+     * * 0: A tensor.
+     * * 1: A tensor of the same {@link OperandType} and dimensions compatible
+     *      with input0.
+     *
+     * Outputs:
+     * * 0: A tensor of {@link OperandType::TENSOR_BOOL8}.
+     */
+    GREATER_EQUAL = @1.2::OperationType:GREATER_EQUAL,
+
+    /**
+     * Performs a grouped 2-D convolution operation.
+     *
+     * Given an input tensor of shape [batches, height, width, depth_in] and a
+     * filter tensor of shape [depth_out, filter_height, filter_width, depth_group]
+     * containing depth_out convolutional filters of depth depth_group, GROUPED_CONV
+     * applies a group of different filters to each input channel group, then
+     * concatenates the results together.
+     *
+     * Specifically, the input channels are divided into num_groups groups, each with
+     * depth depth_group, i.e. depth_in = num_groups * depth_group. The convolutional
+     * filters are also divided into num_groups groups, i.e. depth_out is divisible
+     * by num_groups. GROUPED_CONV applies each group of filters to the corresponding
+     * input channel group, and the result are concatenated together.
+     *
+     * The output dimensions are functions of the filter dimensions, stride, and
+     * padding.
+     *
+     * The values in the output tensor are computed as:
+     *
+     *     output[b, i, j, g * channel_multiplier + q] =
+     *         sum_{di, dj, dk} (
+     *             input[b, strides[1] * i + di, strides[2] * j + dj,
+     *                   g * depth_group + dk] *
+     *             filter[g * channel_multiplier + q, di, dj, dk]
+     *         ) + bias[channel]
+     *
+     * where channel_multiplier = depth_out / num_groups
+     *
+     * Supported tensor {@link OperandType} configurations:
+     * * 16 bit floating point:
+     * * * {@link OperandType::TENSOR_FLOAT16} for input, filter, output, and bias.
+     *
+     * * 32 bit floating point:
+     * * * {@link OperandType::TENSOR_FLOAT32} for input, filter, output, and bias.
+     *
+     * * Quantized:
+     * * * {@link OperandType::TENSOR_QUANT8_ASYMM} for input, filter, and output.
+     * * * {@link OperandType::TENSOR_INT32} for bias (with scale set to
+     * * * input.scale * filter.scale).
+     *
+     * * Quantized with symmetric per channel quantization for the filter:
+     * * * {@link OperandType::TENSOR_QUANT8_ASYMM} for input, and output.
+     * * * {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL} for filter.
+     * * * {@link OperandType::TENSOR_INT32} for bias (scale set to 0.0,
+     * * * each value scaling is separate and equal to input.scale * filter.scales[channel]).
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     *
+     * Both explicit padding and implicit padding are supported.
+     *
+     * Inputs (explicit padding):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth_in],
+     *      specifying the input, where depth_in = num_groups * depth_group.
+     * * 1: A 4-D tensor, of shape
+     *      [depth_out, filter_height, filter_width, depth_group], specifying
+     *      the filter, where depth_out must be divisible by num_groups.  For
+     *      tensor of type {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL}
+     *      the channel dimension (channelDim at
+     *      {@link SymmPerChannelQuantParams}) must be set to 0.
+     * * 2: A 1-D tensor, of shape [depth_out], specifying the bias. For input
+     *      tensor of type {@link OperandType::TENSOR_FLOAT32} or
+     *      {@link OperandType::TENSOR_FLOAT16}, the bias must be of the same
+     *      type. For filter tensor of {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      the bias should be of {@link OperandType::TENSOR_INT32}, with zeroPoint
+     *      of 0 and bias_scale == input_scale * filter_scale. For filter tensor
+     *      of {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL}, the bias
+     *      should be of {@link OperandType::TENSOR_INT32}, with zeroPoint of
+     *      0 and bias_scale of 0. The actual scale of each value 'i' is equal to
+     *      bias_scale[i] = input_scale * filter_scale[i].
+     * * 3: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the left, in the ‘width’ dimension.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the right, in the ‘width’ dimension.
+     * * 5: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the top, in the ‘height’ dimension.
+     * * 6: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the bottom, in the ‘height’ dimension.
+     * * 7: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘width’ dimension.
+     * * 8: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘height’ dimension.
+     * * 9: An {@link OperandType::INT32} scalar, specifying the number of
+            groups.
+     * * 10: An {@link OperandType::INT32} scalar, and has to be one of the
+     *       {@link FusedActivationFunc} values. Specifies the activation to
+     *       invoke on the result.
+     * * 11: An {@link OperandType::BOOL} scalar, set to true to specify
+     *       NCHW data layout for input0 and output0. Set to false for NHWC.
+     *
+     * Inputs (implicit padding):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth_in],
+     *      specifying the input, where depth_in = num_groups * depth_group.
+     * * 1: A 4-D tensor, of shape
+     *      [depth_out, filter_height, filter_width, depth_group], specifying
+     *      the filter, where depth_out must be divisible by num_groups.  For
+     *      tensor of type {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL}
+     *      the channel dimension (SymmPerChannelQuantParams::channelDim)
+     *      must be set to 0.
+     * * 2: A 1-D tensor, of shape [depth_out], specifying the bias. For input
+     *      tensor of type {@link OperandType::TENSOR_FLOAT32} or
+     *      {@link OperandType::TENSOR_FLOAT16}, the bias must be of the same
+     *      type. For filter tensor of {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      the bias should be of {@link OperandType::TENSOR_INT32}, with zeroPoint
+     *      of 0 and bias_scale == input_scale * filter_scale. For filter tensor
+     *      of {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL}, the bias
+     *      should be of {@link OperandType::TENSOR_INT32}, with zeroPoint of
+     *      0 and bias_scale of 0. The actual scale of each value 'i' is equal to
+     *      bias_scale[i] = input_scale * filter_scale[i].
+     * * 3: An {@link OperandType::INT32} scalar, specifying the implicit
+     *      padding scheme, has to be one of the
+     *      following values: {0 (NONE), 1 (SAME), 2 (VALID)}.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘width’ dimension.
+     * * 5: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘height’ dimension.
+     * * 6: An {@link OperandType::INT32} scalar, specifying the number of
+     *      groups.
+     * * 7: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     * * 8: An {@link OperandType::BOOL} scalar, set to true to specify
+     *      NCHW data layout for input0 and output0. Set to false for NHWC.
+     *
+     * Outputs:
+     * * 0: The output 4-D tensor, of shape
+     *      [batches, out_height, out_width, depth_out].
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint can be different from inputs' scale and zeroPoint.
+     */
+    GROUPED_CONV_2D = @1.2::OperationType:GROUPED_CONV_2D,
+
+    /**
+     * Localize the maximum keypoints from heatmaps.
+     *
+     * This operation approximates the accurate maximum keypoint scores and
+     * indices after bicubic upscaling by using Taylor expansion up to the
+     * quadratic term.
+     *
+     * The bounding box is represented by its upper-left corner coordinate
+     * (x1,y1) and lower-right corner coordinate (x2,y2) in the original image.
+     * A valid bounding box should satisfy x1 <= x2 and y1 <= y2.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     *
+     * Inputs:
+     * * 0: A 4-D Tensor of shape
+     *      [num_boxes, heatmap_size, heatmap_size, num_keypoints],
+     *      specifying the heatmaps, the height and width of heatmaps should
+     *      be the same, and must be greater than or equal to 2.
+     * * 1: A 2-D Tensor of shape [num_boxes, 4], specifying the bounding boxes,
+     *      each with format [x1, y1, x2, y2]. For input0 of type
+     *      {@link OperandType::TENSOR_QUANT8_ASYMM}, this tensor should
+     *      be of {@link OperandType::TENSOR_QUANT16_ASYMM}, with zeroPoint
+     *      of 0 and scale of 0.125.
+     * * 2: An {@link OperandType::BOOL} scalar, set to true to specify
+     *      NCHW data layout for input0. Set to false for NHWC.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0, with shape
+     *      [num_boxes, num_keypoints], specifying score of the keypoints.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint can be different from input0 scale and zeroPoint.
+     * * 1: A tensor of the same {@link OperandType} as input1, with shape
+     *      [num_boxes, num_keypoints, 2], specifying the location of
+     *      the keypoints, the second dimension is organized as
+     *      [keypoint_x, keypoint_y].
+     *      For type of {@link OperandType::TENSOR_QUANT16_ASYMM}, the
+     *      scale must be 0.125 and the zero point must be 0.
+     */
+    HEATMAP_MAX_KEYPOINT = @1.2::OperationType:HEATMAP_MAX_KEYPOINT,
+
+    /**
+     * Applies instance normalization to the input tensor.
+     *
+     * The values in the output tensor are computed as:
+     *
+     *     output[b, h, w, c] =
+     *         (input[b, h, w, c] - mean[b, c]) * gamma /
+     *         sqrt(var[b, c] + epsilon) + beta
+     *
+     * Where the mean and variance are computed across the spatial dimensions:
+     *
+     *     mean[b, c] =
+     *         sum_{h, w}(input[b, h, w, c]) / sum(1)
+     *
+     *     var[b, c] =
+     *         sum_{h, w}(pow(input[b, h, w, c] - mean[b, c], 2)) / sum(1)
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     *
+     * Inputs:
+     * * 0: An n-D tensor, specifying the tensor to be normalized.
+     * * 1: A scalar, specifying gamma, the scale applied to the normalized
+     *      tensor. The scalar must be of {@link OperandType::FLOAT16} if
+     *      input0 is of {@link OperandType::TENSOR_FLOAT16} and of
+     *      {@link OperandType::FLOAT32} if input0 is of
+     *      {@link OperandType::TENSOR_FLOAT32}.
+     * * 2: A scalar, specifying beta, the offset applied to the normalized
+     *      tensor. The scalar must be of {@link OperandType::FLOAT16} if
+     *      input0 is of {@link OperandType::TENSOR_FLOAT16} and of
+     *      {@link OperandType::FLOAT32} if input0 is of
+     *      {@link OperandType::TENSOR_FLOAT32}.
+     * * 3: A scalar, specifying epsilon, the small value added to variance to
+     *      avoid dividing by zero. The scalar must be of {@link OperandType::FLOAT16} if
+     *      input0 is of {@link OperandType::TENSOR_FLOAT16} and of
+     *      {@link OperandType::FLOAT32} if input0 is of
+     *      {@link OperandType::TENSOR_FLOAT32}.
+     * * 4: An {@link OperandType::BOOL} scalar, set to true to specify
+     *      NCHW data layout for input0 and output0. Set to false for NHWC.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} and same shape as input0.
+     */
+    INSTANCE_NORMALIZATION = @1.2::OperationType:INSTANCE_NORMALIZATION,
+
+    /**
+     * For input tensors x and y, computes x < y elementwise.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_BOOL8}
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * This operation supports broadcasting.
+     *
+     * Inputs:
+     * * 0: A tensor.
+     * * 1: A tensor of the same {@link OperandType} and dimensions compatible
+     *      with input0.
+     *
+     * Outputs:
+     * * 0: A tensor of {@link OperandType::TENSOR_BOOL8}.
+     */
+    LESS = @1.2::OperationType:LESS,
+
+    /**
+     * For input tensors x and y, computes x <= y elementwise.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_BOOL8}
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * This operation supports broadcasting.
+     *
+     * Inputs:
+     * * 0: A tensor.
+     * * 1: A tensor of the same {@link OperandType} and dimensions compatible
+     *      with input0.
+     *
+     * Outputs:
+     * * 0: A tensor of {@link OperandType::TENSOR_BOOL8}.
+     */
+    LESS_EQUAL = @1.2::OperationType:LESS_EQUAL,
+
+    /**
+     * Computes natural logarithm of x element-wise.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: from 1.
+     *
+     * Inputs:
+     * * 0: A tensor.
+     *
+     * Outputs:
+     * * 0: The output tensor of same shape as input0.
+     */
+    LOG = @1.2::OperationType:LOG,
+
+    /**
+     * Returns the truth value of x AND y element-wise.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_BOOL8}
+     *
+     * Supported tensor rank: from 1
+     *
+     * This operation supports broadcasting.
+     *
+     * Inputs:
+     * * 0: A tensor of {@link OperandType::TENSOR_BOOL8}.
+     * * 1: A tensor of {@link OperandType::TENSOR_BOOL8} and dimensions
+     *      compatible with input0.
+     *
+     * Outputs:
+     * * 0: A tensor of {@link OperandType::TENSOR_BOOL8}.
+     */
+    LOGICAL_AND = @1.2::OperationType:LOGICAL_AND,
+
+    /**
+     * Computes the truth value of NOT x element-wise.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_BOOL8}
+     *
+     * Supported tensor rank: from 1.
+     *
+     * Inputs:
+     * * 0: A tensor.
+     *
+     * Outputs:
+     * * 0: The output tensor of same shape as input0.
+     */
+    LOGICAL_NOT = @1.2::OperationType:LOGICAL_NOT,
+
+    /**
+     * Returns the truth value of x OR y element-wise.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_BOOL8}
+     *
+     * Supported tensor rank: from 1
+     *
+     * This operation supports broadcasting.
+     *
+     * Inputs:
+     * * 0: A tensor of {@link OperandType::TENSOR_BOOL8}.
+     * * 1: A tensor of {@link OperandType::TENSOR_BOOL8} and dimensions
+     *      compatible with input0.
+     *
+     * Outputs:
+     * * 0: A tensor of {@link OperandType::TENSOR_BOOL8}.
+     */
+    LOGICAL_OR = @1.2::OperationType:LOGICAL_OR,
+
+    /**
+     * Computes the log softmax activations given logits.
+     *
+     * The output is calculated using this formula:
+     *
+     *     output = logits * beta - log(reduce_sum(exp(logits * beta), axis))
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: from 1.
+     *
+     * Inputs:
+     * * 0: A tensor specifying the input logits.
+     * * 1: A scalar, specifying the positive scaling factor for the exponent,
+     *      beta.
+     *      For input tensor of {@link OperandType::TENSOR_FLOAT16}, the beta
+     *      value must be of {@link OperandType::FLOAT16}.
+     *      For input tensor of {@link OperandType::TENSOR_FLOAT32}, the beta
+     *      value must be of {@link OperandType::FLOAT32}.
+     * * 2: An {@link OperandType::INT32} scalar specifying the axis to
+     *      reduce across. Negative index is used to specify axis from the
+     *      end (e.g. -1 for the last axis). Must be in the range [-n, n).
+     *
+     * Outputs:
+     * * 0: The output tensor of the same {@link OperandType} and shape as
+     *      input0.
+     */
+    LOG_SOFTMAX = @1.2::OperationType:LOG_SOFTMAX,
+
+    /**
+     * Returns the element-wise maximum of two tensors.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1.
+     *
+     * Inputs:
+     * * 0: A tensor.
+     * * 1: A tensor of the same {@link OperandType} and compatible dimensions
+     *      with input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scales and zeroPoint can be different from input0 scale and zeroPoint.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint can be different from inputs' scale and zeroPoint.
+     */
+    MAXIMUM = @1.2::OperationType:MAXIMUM,
+
+    /**
+     * Returns the element-wise minimum of two tensors.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1.
+     *
+     * Inputs:
+     * * 0: A tensor.
+     * * 1: A tensor of the same {@link OperandType} and compatible dimensions
+     *      with input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scales and zeroPoint can be different from input0 scale and zeroPoint.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint can be different from inputs' scale and zeroPoint.
+     */
+    MINIMUM = @1.2::OperationType:MINIMUM,
+
+    /**
+     * Computes numerical negative value element-wise.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     *
+     * Supported tensor rank: from 1.
+     *
+     * Inputs:
+     * * 0: A tensor.
+     *
+     * Outputs:
+     * * 0: The output tensor of same shape as input0.
+     */
+    NEG = @1.2::OperationType:NEG,
+
+    /**
+     * For input tensors x and y, computes x != y elementwise.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_BOOL8}
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * This operation supports broadcasting.
+     *
+     * Inputs:
+     * * 0: A tensor.
+     * * 1: A tensor of the same {@link OperandType} and dimensions compatible
+     *      with input0.
+     *
+     * Outputs:
+     * * 0: A tensor of {@link OperandType::TENSOR_BOOL8}.
+     */
+    NOT_EQUAL = @1.2::OperationType:NOT_EQUAL,
+
+    /**
+     * Pads a tensor with the given constant value according to the specified
+     * paddings.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: An n-D tensor, specifying the tensor to be padded.
+     * * 1: A 2-D Tensor of {@link OperandType::TENSOR_INT32}, the paddings
+     *      for each spatial dimension of the input tensor. The shape of the
+     *      tensor must be {rank(input0), 2}.
+     *      padding[i, 0] specifies the number of elements to be padded in the
+     *      front of dimension i.
+     *      padding[i, 1] specifies the number of elements to be padded after
+     *      the end of dimension i.
+     * * 2: An scalar specifying the value to use for padding input0.
+     *      For input tensor of {@link OperandType::TENSOR_FLOAT16}, the
+     *      pad value must be of {@link OperandType::FLOAT16}.
+     *      For input tensor of {@link OperandType::TENSOR_FLOAT32}, the
+     *      pad value must be of {@link OperandType::FLOAT32}.
+     *      For input tensor of {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      the pad value must be of {@link OperandType::INT32}. The
+     *      scale and zeroPoint are assumed to be the same as in input0.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0. The
+     *      output tensor has the same rank as input0, and each
+     *      dimension of the output tensor has the same size as the
+     *      corresponding dimension of the input tensor plus the size
+     *      of the padding:
+     *          output0.dimension[i] =
+     *              padding[i, 0] + input0.dimension[i] + padding[i, 1]
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    PAD_V2 = @1.2::OperationType:PAD_V2,
+
+    /**
+     * Computes the power of one value to another.
+     *
+     * Given a tensor base and a tensor exponent, this operation computes
+     * base^exponent elementwise.
+     *
+     * This operations supports broadcasting. The size of the output is the
+     * maximum size along each dimension of the input operands. It starts with
+     * the trailing dimensions, and works its way forward.
+     *
+     * For example:
+     *     base.dimension     =    {4, 1, 2}
+     *     exponent.dimension = {5, 4, 3, 1}
+     *     output.dimension   = {5, 4, 3, 2}
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: from 1
+     *
+     * Inputs:
+     * * 0: A tensor specifying the base.
+     * * 1: A tensor specifying the exponent.
+     *
+     * Outputs:
+     * * 0: An output tensor.
+     */
+    POW = @1.2::OperationType:POW,
+
+    /**
+     * Parametric Rectified Linear Unit.
+     *
+     * It follows: f(x) = alpha * x for x < 0, f(x) = x for x >= 0, where alpha
+     * is a learned array with the same {@link OperandType} and compatible
+     * dimensions as input x.
+     *
+     * Two dimensions are compatible when:
+     *     1. they are equal, or
+     *     2. one of them is 1
+     *
+     * The size of the output is the maximum size along each dimension of the
+     * input operands. It starts with the trailing dimensions, and works its way
+     * forward.
+     *
+     * Example:
+     *     input.dimension  =    {4, 1, 2}
+     *     alpha.dimension  = {5, 4, 3, 1}
+     *     output.dimension = {5, 4, 3, 2}
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * Inputs:
+     * * 0: A tensor, specifying the input.
+     * * 1: A tensor of the same {@link OperandType}, and compatible dimensions
+     *      as input0, specifying the alpha.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint can be diffent from the input0 scale and zeroPoint.
+     */
+    PRELU = @1.2::OperationType:PRELU,
+
+    /**
+     * Quantizes the input tensor.
+     *
+     * The formula is:
+     *
+     *     output = max(0, min(255, round(input / scale) + zeroPoint)
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: from 1
+     *
+     * Inputs:
+     * * 0: A tensor, may be zero-sized.
+     *
+     * Outputs:
+     * * 0: The output tensor of same shape as input0, but with
+     *      {@link OperandType::TENSOR_QUANT8_ASYMM}.
+     */
+    QUANTIZE = @1.2::OperationType:QUANTIZE,
+
+    /**
+     * A version of quantized LSTM, using 16 bit quantization for internal
+     * state.
+     *
+     * There is no projection layer, so cell state size is equal to the output
+     * size.
+     *
+     * Inputs:
+     * * 0: A 2-D tensor of type {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *      and shape [numBatches, inputSize] specifying the input to the LSTM
+     *      cell. Tensor is quantized with a fixed quantization range of
+     *      [-1, 127/128] (scale = 1/128, zeroPoint = 128).
+     * * 1: The input-to-input weights.
+     *      A 2-D tensor of type {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *      and shape [outputSize, inputSize] specifying input-to-input part of
+     *      weights for fully-connected layer inside the LSTM cell.
+     *      Quantization zero point and scale must be the same across all the
+     *      weights.
+     * * 2: The input-to-forget weights.
+     *      A 2-D tensor of type {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *      and shape [outputSize, inputSize] specifying input-to-forget part of
+     *      weights for fully-connected layer inside the LSTM cell.
+     *      Quantization zero point and scale must be the same across all the
+     *      weights.
+     * * 3: The input-to-cell weights.
+     *      A 2-D tensor of type {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *      and shape [outputSize, inputSize] specifying input-to-cell part of
+     *      weights for fully-connected layer inside the LSTM cell.
+     *      Quantization zero point and scale must be the same across all the
+     *      weights.
+     * * 4: The input-to-output weights.
+     *      A 2-D tensor of type {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *      and shape [outputSize, inputSize] specifying input-to-output part of
+     *      weights for fully-connected layer inside the LSTM cell.
+     *      Quantization zero point and scale must be the same across all the
+     *      weights.
+     * * 5: The recurrent-to-input weights.
+     *      A 2-D tensor of type {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *      and shape [outputSize, outputSize] specifying recurrent-to-input part
+     *      of weights for fully-connected layer inside the LSTM cell.
+     *      Quantization zero point and scale must be the same across all the
+     *      weights.
+     * * 6: The recurrent-to-forget weights.
+     *      A 2-D tensor of type {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *      and shape [outputSize, outputSize] specifying recurrent-to-forget
+     *      part of weights for fully-connected layer inside the LSTM cell.
+     *      Quantization zero point and scale must be the same across all the
+     *      weights.
+     * * 7: The recurrent-to-cell weights.
+     *      A 2-D tensor of type {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *      and shape [outputSize, outputSize] specifying recurrent-to-cell part
+     *      of weights for fully-connected layer inside the LSTM cell.
+     *      Quantization zero point and scale must be the same across all the
+     *      weights.
+     * * 8: The recurrent-to-output weights.
+     *      A 2-D tensor of type {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *      and shape [outputSize, outputSize] specifying recurrent-to-output
+     *      part of weights for fully-connected layer inside the LSTM cell.
+     *      Quantization zero point and scale must be the same across all the
+     *      weights.
+     * * 9: The input gate bias.
+     *      A 1-D tensor of type {@link OperandType::TENSOR_INT32} and shape
+     *      [outputSize] specifying the bias for the fully-connected layer
+     *      inside the LSTM cell. Bias is quantized with scale being a product
+     *      of input and weights scales and zeroPoint equal to 0.
+     * * 10:The forget gate bias.
+     *      A 1-D tensor of type {@link OperandType::TENSOR_INT32} and shape
+     *      [outputSize] specifying the bias for the fully-connected layer
+     *      inside the LSTM cell. Bias is quantized with scale being a product
+     *      of input and weights scales and zeroPoint equal to 0.
+     * * 11:The cell bias.
+     *      A 1-D tensor of type {@link OperandType::TENSOR_INT32} and shape
+     *      [outputSize] specifying the bias for the fully-connected layer
+     *      inside the LSTM cell. Bias is quantized with scale being a product
+     *      of input and weights scales and zeroPoint equal to 0.
+     * * 12:The output gate bias.
+     *      A 1-D tensor of type {@link OperandType::TENSOR_INT32} and shape
+     *      [outputSize] specifying the bias for the fully-connected layer
+     *      inside the LSTM cell. Bias is quantized with scale being a product
+     *      of input and weights scales and zeroPoint equal to 0.
+     * * 13: A 2-D tensor of type {@link OperandType::TENSOR_QUANT16_SYMM}
+     *       and shape [numBatches, outputSize] specifying the cell state from the
+     *       previous time step of the LSTM cell. It is quantized using a
+     *       quantization range of [-2^4, 2^4 * 32767/32768] (scale = 2^4 /
+     *       32768, zeroPoint = 0).
+     * * 14: A 2-D tensor of type {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *       and shape [numBathes, outputSize] specifying the output of the LSTM
+     *       cell from previous time-step. Tensor is quantized with a fixed
+     *       quantization range of [-1, 127/128] (scale = 1/128, zeroPoint =
+     *       128).
+     *
+     *
+     * Outputs:
+     * * 0: A 2-D tensor of type {@link OperandType::TENSOR_QUANT16_SYMM}
+     *      and shape [numBatches, outputSize] which contains a cell state from
+     *      the current time step. Tensor is quantized using a quantization
+     *      range of [-2^4, 2^4 * 32767/32768] (scale = 2^4 / 32768, zeroPoint =
+     *      0).
+     * * 1: A 2-D tensor of type {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *      and shape [numBathes, outputSize] which contains the output value.
+     *      Tensor is quantized with a fixed quantization range of [-1, 127/128]
+     *      (scale = 1/128, zeroPoint = 128).
+     */
+    QUANTIZED_16BIT_LSTM = @1.2::OperationType:QUANTIZED_16BIT_LSTM,
+
+    /**
+     * Draws samples from a multinomial distribution.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Inputs:
+     * * 0: A 2-D tensor with shape [batches, classes], specifying the
+     *      unnormalized log-probabilities for all classes.
+     * * 1: A scalar {@link OperandType::INT32}, specifying the number of
+     *      independent samples to draw for each row slice.
+     * * 2: A 1-D {@link OperandType::TENSOR_INT32} tensor with shape [2],
+     *      specifying seeds used to initialize the random distribution.
+     * Outputs:
+     * * 0: A 2-D {@link OperandType::TENSOR_INT32} tensor with shape
+     *      [batches, samples], containing the drawn samples.
+     */
+    RANDOM_MULTINOMIAL = @1.2::OperationType:RANDOM_MULTINOMIAL,
+
+    /**
+     * Reduces a tensor by computing the "logical and" of elements along given
+     * dimensions.
+     *
+     * If keep_dims is true, the reduced dimensions are
+     * retained with length 1. Otherwise, the rank of the tensor is reduced by
+     * 1 for each entry in dimensions.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_BOOL8}
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: An n-D tensor.
+     * * 1: A 1-D tensor of {@link OperandType::TENSOR_INT32}. The dimensions
+     *      to reduce. Dimension values must be in the range [-n, n).
+     * * 2: An {@link OperandType::BOOL} scalar, keep_dims. If true,
+     *      retains reduced dimensions with length 1.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0.
+     */
+    REDUCE_ALL = @1.2::OperationType:REDUCE_ALL,
+
+    /**
+     * Reduces a tensor by computing the "logical or" of elements along given
+     * dimensions.
+     *
+     * If keep_dims is true, the reduced dimensions are
+     * retained with length 1. Otherwise, the rank of the tensor is reduced by
+     * 1 for each entry in dimensions.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_BOOL8}
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: An n-D tensor.
+     * * 1: A 1-D tensor of {@link OperandType::TENSOR_INT32}. The dimensions
+     *      to reduce. Dimension values must be in the range [-n, n).
+     * * 2: An {@link OperandType::BOOL} scalar, keep_dims. If true,
+     *      retains reduced dimensions with length 1.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0.
+     */
+    REDUCE_ANY = @1.2::OperationType:REDUCE_ANY,
+
+    /**
+     * Reduces a tensor by computing the maximum of elements along given
+     * dimensions.
+     *
+     * If keep_dims is true, the reduced dimensions are
+     * retained with length 1. Otherwise, the rank of the tensor is reduced by
+     * 1 for each entry in dimensions.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: An n-D tensor.
+     * * 1: A 1-D tensor of {@link OperandType::TENSOR_INT32}. The dimensions
+     *      to reduce. Dimension values must be in the range [-n, n).
+     * * 2: An {@link OperandType::BOOL} scalar, keep_dims. If true,
+     *      retains reduced dimensions with length 1.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    REDUCE_MAX = @1.2::OperationType:REDUCE_MAX,
+
+    /**
+     * Reduces a tensor by computing the minimum of elements along given
+     * dimensions.
+     *
+     * If keep_dims is true, the reduced dimensions are
+     * retained with length 1. Otherwise, the rank of the tensor is reduced by
+     * 1 for each entry in dimensions.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: An n-D tensor.
+     * * 1: A 1-D tensor of {@link OperandType::TENSOR_INT32}. The dimensions
+     *      to reduce. Dimension values must be in the range [-n, n).
+     * * 2: An {@link OperandType::BOOL} scalar, keep_dims. If true,
+     *      retains reduced dimensions with length 1.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    REDUCE_MIN = @1.2::OperationType:REDUCE_MIN,
+
+    /**
+     * Reduces a tensor by multiplying elements along given dimensions.
+     *
+     * If keep_dims is true, the reduced dimensions are
+     * retained with length 1. Otherwise, the rank of the tensor is reduced by
+     * 1 for each entry in dimensions.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: An n-D tensor.
+     * * 1: A 1-D tensor of {@link OperandType::TENSOR_INT32}. The dimensions
+     *      to reduce. Dimension values must be in the range [-n, n).
+     * * 2: An {@link OperandType::BOOL} scalar, keep_dims. If true,
+     *      retains reduced dimensions with length 1.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0.
+     */
+    REDUCE_PROD = @1.2::OperationType:REDUCE_PROD,
+
+    /**
+     * Reduces a tensor by summing elements along given dimensions.
+     *
+     * If keep_dims is true, the reduced dimensions are
+     * retained with length 1. Otherwise, the rank of the tensor is reduced by
+     * 1 for each entry in dimensions.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: up to 4
+     *
+     * Inputs:
+     * * 0: An n-D tensor.
+     * * 1: A 1-D tensor of {@link OperandType::TENSOR_INT32}. The dimensions
+     *      to reduce. Dimension values must be in the range [-n, n).
+     * * 2: An {@link OperandType::BOOL} scalar, keep_dims. If true,
+     *      retains reduced dimensions with length 1.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0.
+     */
+    REDUCE_SUM = @1.2::OperationType:REDUCE_SUM,
+
+    /**
+     * Select and scale the feature map of each region of interest to a unified
+     * output size by average pooling sampling points from bilinear interpolation.
+     *
+     * The region of interest is represented by its upper-left corner coordinate
+     * (x1,y1) and lower-right corner coordinate (x2,y2) in the original image.
+     * A spatial scaling factor is applied to map into feature map coordinate.
+     * A valid region of interest should satisfy x1 <= x2 and y1 <= y2.
+     *
+     * No rounding is applied in this operation. The sampling points are unified
+     * distributed in the pooling bin and their values are calculated by bilinear
+     * interpolation.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     *
+     * Inputs:
+     * * 0: A 4-D tensor, specifying the feature map.
+     * * 1: A 2-D Tensor of shape [num_rois, 4], specifying the locations of
+     *      the regions of interest, each line with format [x1, y1, x2, y2].
+     *      For input0 of type {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      this tensor should be of {@link OperandType::TENSOR_QUANT16_ASYMM},
+     *      with zeroPoint of 0 and scale of 0.125. Zero num_rois is
+     *      supported for this tensor.
+     * * 2: An 1-D {@link OperandType::TENSOR_INT32} tensor, of shape
+     *      [num_rois], specifying the batch index of each box. Boxes with
+     *      the same batch index are grouped together. Zero num_rois is
+     *      supported for this tensor.
+     * * 3: An {@link OperandType::INT32} scalar, specifying the output
+     *      height of the output tensor.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the output
+     *      width of the output tensor.
+     * * 5: An {@link OperandType::FLOAT32} scalar, specifying the ratio
+     *      from the height of original image to the height of feature map.
+     * * 6: An {@link OperandType::FLOAT32} scalar, specifying the ratio
+     *      from the width of original image to the width of feature map.
+     * * 7: An {@link OperandType::INT32} scalar, specifying the number of
+     *      sampling points in height dimension used to compute the output.
+     *      Set to 0 for adaptive value of ceil(roi_height/out_height).
+     * * 8: An {@link OperandType::INT32} scalar, specifying the number of
+     *      sampling points in width dimension used to compute the output.
+     *      Set to 0 for adaptive value of ceil(roi_width/out_width).
+     * * 9: An {@link OperandType::BOOL} scalar, set to true to specify
+     *      NCHW data layout for input0 and output0. Set to false for NHWC.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0. The output
+     *      shape is [num_rois, out_height, out_width, depth].
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint can be different from the input0 scale and zeroPoint.
+     */
+    ROI_ALIGN = @1.2::OperationType:ROI_ALIGN,
+
+    /**
+     * Select and scale the feature map of each region of interest to a unified
+     * output size by max-pooling.
+     *
+     * The region of interest is represented by its upper-left corner coordinate
+     * (x1,y1) and lower-right corner coordinate (x2,y2) in the original image.
+     * A spatial scaling factor is applied to map into feature map coordinate.
+     * A valid region of interest should satisfy x1 <= x2 and y1 <= y2.
+     *
+     * Rounding is applied in this operation to ensure integer boundary for
+     * regions of interest and pooling bins.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     *
+     * Inputs:
+     * * 0: A 4-D tensor, specifying the feature map.
+     * * 1: A 2-D Tensor of shape [num_rois, 4], specifying the locations of
+     *      the regions of interest, each line with format [x1, y1, x2, y2].
+     *      For input0 of type {@link OperandType::TENSOR_QUANT8_ASYMM},
+     *      this tensor should be of {@link OperandType::TENSOR_QUANT16_ASYMM},
+     *      with zeroPoint of 0 and scale of 0.125.
+     * * 2: An 1-D {@link OperandType::TENSOR_INT32} tensor, of shape
+     *      [num_rois], specifying the batch index of each box. Boxes with
+     *      the same batch index are grouped together.
+     * * 3: An {@link OperandType::INT32} scalar, specifying the output
+     *      height of the output tensor.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the output
+     *      width of the output tensor.
+     * * 5: An {@link OperandType::FLOAT32} scalar, specifying the ratio
+     *      from the height of original image to the height of feature map.
+     * * 6: An {@link OperandType::FLOAT32} scalar, specifying the ratio
+     *      from the width of original image to the width of feature map.
+     * * 7: An {@link OperandType::BOOL} scalar, set to true to specify
+     *      NCHW data layout for input0 and output0. Set to false for NHWC.
+     *
+     * Outputs:
+     * * 0: A tensor of the same {@link OperandType} as input0. The output
+     *      shape is [num_rois, out_height, out_width, depth].
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    ROI_POOLING = @1.2::OperationType:ROI_POOLING,
+
+    /**
+     * Computes reciprocal of square root of x element-wise.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: from 1.
+     *
+     * Inputs:
+     * * 0: A tensor.
+     *
+     * Outputs:
+     * * 0: The output tensor of same shape as input0.
+     */
+    RSQRT = @1.2::OperationType:RSQRT,
+
+    /**
+     * Using a tensor of booleans c and input tensors x and y select values
+     * elementwise from both input tensors:
+     *
+     * O[i] = C[i] ? x[i] : y[i].
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * Inputs:
+     * * 0: A tensor of type {@link OperandType::TENSOR_BOOL8} acting as a
+     *      mask that chooses, based on the value at each element, whether the
+     *      corresponding element in the output should be taken from input1 (if
+     *      true) or input2 (if false).
+     * * 1: An input tensor of the same shape as input0.
+     * * 2: An input tensor of the same shape and type as input1.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scales and zeroPoint can be different from input1 scale and zeroPoint.
+     *
+     * Outputs:
+     * * 0: A tensor of the same type and shape as input1 and input2.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint can be different from inputs' scale and zeroPoint.
+     *
+     */
+    SELECT = @1.2::OperationType:SELECT,
+
+    /**
+     * Computes sin of x element-wise.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: from 1.
+     *
+     * Inputs:
+     * * 0: A tensor.
+     *
+     * Outputs:
+     * * 0: The output tensor of same shape as input0.
+     */
+    SIN = @1.2::OperationType:SIN,
+
+    /**
+     * Extracts a slice of specified size from the input tensor starting at a
+     * specified location.
+     *
+     * The starting location is specified as a 1-D tensor containing offsets
+     * for each dimension. The size is specified as a 1-D tensor containing
+     * either size of a slice along corresponding dimension or -1. In the latter
+     * case, all the remaining elements in dimension are included in the slice.
+     *
+     * A sum of begin offset and a size of a slice must not exceed size of a
+     * corresponding dimension.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * Inputs:
+     * * 0: An n-D tensor to take slice from, may be zero-sized.
+     * * 1: A 1-D tensor of type {@link OperandType::TENSOR_INT32} specifying
+     *      the beginning indices of the slice in each dimension.
+     * * 2: A 1-D tensor of type {@link OperandType::TENSOR_INT32} specifying
+     *      the size of the slice in each dimension.
+     *
+     * Outputs:
+     * * 0: An n-D tensor of the same type as the input containing the slice.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      its scale and zeroPoint has to be same as the input0 scale and zeroPoint.
+     */
+    SLICE = @1.2::OperationType:SLICE,
+
+    /**
+     * Splits a tensor along a given axis into num_splits subtensors.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * Inputs:
+     * * 0: An n-D tensor to split.
+     * * 1: An {@link OperandType::INT32} scalar specifying the axis along
+     *      which to split.
+     * * 2: An {@link OperandType::INT32} scalar indicating the number of
+     *      splits along given axis. Must evenly divide axis size.
+     *
+     * Outputs:
+     * * 0 ~ (num_splits - 1): Resulting subtensors.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    SPLIT = @1.2::OperationType:SPLIT,
+
+    /**
+     * Computes square root of x element-wise.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: from 1.
+     *
+     * Inputs:
+     * * 0: A tensor.
+     *
+     * Outputs:
+     * * 0: The output tensor of same shape as input0.
+     */
+    SQRT = @1.2::OperationType:SQRT,
+
+    /**
+     * Constructs a tensor by tiling a given tensor.
+     *
+     * This operation creates a new tensor by replicating `input` `multiples`
+     * times. The output tensor's i-th dimension has `input.dims(i) * multiples[i]`
+     * elements, and the values of `input` are replicated `multiples[i]` times
+     * along the i-th dimension.
+     * For example, tiling `[a b c d]` by `[2]` produces `[a b c d a b c d]`.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * Inputs:
+     * * 0: input, an n-D tensor specifying the input.
+     * * 1: multiples, a 1-D tensor of {@link OperandType::TENSOR_INT32}.
+     *      The length of multiples must be n.
+     *
+     * Outputs:
+     * * 0: A tiled tensor of the same {@link OperandType} and rank as `input`.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    TILE = @1.2::OperationType:TILE,
+
+    /**
+     * Finds values and indices of the k largest entries for the last dimension.
+     *
+     * Resulting values in each dimensions are sorted in descending order. If
+     * two values are equal, the one with larger index appears first.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_INT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: from 1
+     *
+     * Inputs:
+     * * 0: input, an n-D tensor specifying the input.
+     * * 1: k, an {@link OperandType::INT32} scalar, specifying the number of
+     *      top elements to look for along the last dimension.
+     *
+     * Outputs:
+     * * 0: An n-D tensor of the same type as the input, containing the k
+     *      largest elements along each last dimensional slice.
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     * * 1: An n-D tensor of type {@link OperandType::TENSOR_INT32}
+     *      containing the indices of values within the last dimension of input.
+     */
+    TOPK_V2 = @1.2::OperationType:TOPK_V2,
+
+    /**
+     * Performs the transpose of 2-D convolution operation.
+     *
+     * This operation is sometimes called "deconvolution" after Deconvolutional
+     * Networks, but is actually the transpose (gradient) of
+     * {@link OperandType::CONV_2D} rather than an actual deconvolution.
+     *
+     * The output dimensions are functions of the filter dimensions, stride, and
+     * padding.
+     *
+     * Supported tensor {@link OperandType} configurations:
+     * * 16 bit floating point:
+     * * * {@link OperandType::TENSOR_FLOAT16} for input, filter, output, and bias.
+     *
+     * * 32 bit floating point:
+     * * * {@link OperandType::TENSOR_FLOAT32} for input, filter, output, and bias.
+     *
+     * * Quantized:
+     * * * {@link OperandType::TENSOR_QUANT8_ASYMM} for input, filter, and output.
+     * * * {@link OperandType::TENSOR_INT32} for bias (with scale set to
+     * * * input.scale * filter.scale).
+     *
+     * * Quantized with symmetric per channel quantization for the filter:
+     * * * {@link OperandType::TENSOR_QUANT8_ASYMM} for input, and output.
+     * * * {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL} for filter.
+     * * * {@link OperandType::TENSOR_INT32} for bias (scale set to 0.0,
+     * * * each value scaling is separate and equal to input.scale * filter.scales[channel]).
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     *
+     * Both explicit padding and implicit padding are supported.
+     *
+     * Inputs (explicit padding):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth_in],
+     *      specifying the input.
+     * * 1: A 4-D tensor, of shape
+     *      [depth_out, filter_height, filter_width, depth_in], specifying the
+     *      filter. For tensor of type
+     *      {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL} the channel
+     *      dimension (SymmPerChannelQuantParams::channelDim) must be set to 0.
+     * * 2: A 1-D tensor, of shape [depth_out], specifying the bias. For input
+     *      tensor of type {@link OperandType::TENSOR_FLOAT32} or
+     *      {@link OperandType::TENSOR_FLOAT16}, the bias should be of the
+     *      same type. For input tensor of type
+     *      {@link OperandType::TENSOR_QUANT8_ASYMM}, the bias should be
+     *      of {@link OperandType::TENSOR_INT32}, with zeroPoint of 0 and
+     *      bias_scale == input_scale * filter_scale. For filter tensor of
+     *      {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL}, the bias
+     *      must be of {@link OperandType::TENSOR_INT32}, with zeroPoint of
+     *      0 and bias_scale of 0. The actual scale of each value 'i' is equal
+     *      to bias_scale[i] = input_scale * filter_scale[i].
+     * * 3: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the left, in the ‘width’ dimension.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the right, in the ‘width’ dimension.
+     * * 5: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the top, in the ‘height’ dimension.
+     * * 6: An {@link OperandType::INT32} scalar, specifying the padding on
+     *      the bottom, in the ‘height’ dimension.
+     * * 7: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘width’ dimension.
+     * * 8: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘height’ dimension.
+     * * 9: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     * * 10: An {@link OperandType::BOOL} scalar, set to true to specify
+     *       NCHW data layout for input0 and output0. Set to false for NHWC.
+     *
+     * Inputs (implicit padding):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth_in],
+     *      specifying the input.
+     * * 1: A 4-D tensor, of shape
+     *      [depth_out, filter_height, filter_width, depth_in], specifying the
+     *      filter. For tensor of type
+     *      {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL} the channel
+     *      dimension (SymmPerChannelQuantParams::channelDim) must be set to 0.
+     * * 2: A 1-D tensor, of shape [depth_out], specifying the bias. For input
+     *      tensor of type {@link OperandType::TENSOR_FLOAT32} or
+     *      {@link OperandType::TENSOR_FLOAT16}, the bias should be of the
+     *      same type. For input tensor of type
+     *      {@link OperandType::TENSOR_QUANT8_ASYMM}, the bias should be
+     *      of {@link OperandType::TENSOR_INT32}, with zeroPoint of 0 and
+     *      bias_scale == input_scale * filter_scale. For filter tensor of
+     *      {@link OperandType::TENSOR_QUANT8_SYMM_PER_CHANNEL}, the bias
+     *      must be of {@link OperandType::TENSOR_INT32}, with zeroPoint of
+     *      0 and bias_scale of 0. The actual scale of each value 'i' is equal
+     *      to bias_scale[i] = input_scale * filter_scale[i].
+     * * 3: An {@link OperandType::TENSOR_INT32} tensor, specifying the output
+     *      tensor shape.
+     * * 4: An {@link OperandType::INT32} scalar, specifying the implicit
+     *      padding scheme, has to be one of the
+     *      following values: {0 (NONE), 1 (SAME), 2 (VALID)}.
+     * * 5: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘width’ dimension.
+     * * 6: An {@link OperandType::INT32} scalar, specifying the stride when
+     *      walking through input in the ‘height’ dimension.
+     * * 7: An {@link OperandType::INT32} scalar, and has to be one of the
+     *      {@link FusedActivationFunc} values. Specifies the activation to
+     *      invoke on the result.
+     * * 8: An {@link OperandType::BOOL} scalar, set to true to specify
+     *      NCHW data layout for input0 and output0. Set to false for NHWC.
+     *
+     * Outputs:
+     * * 0: The output 4-D tensor, of shape
+     *      [batches, out_height, out_width, depth_out].
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint can be different from inputs' scale and zeroPoint.
+     */
+    TRANSPOSE_CONV_2D = @1.2::OperationType:TRANSPOSE_CONV_2D,
+
+    /**
+     * A recurrent neural network specified by an LSTM cell.
+     *
+     * Performs (fully) dynamic unrolling of input.
+     *
+     * This Op unrolls the input along the time dimension, and implements the
+     * following operation for each element in the sequence
+     * s = 1...sequence_length:
+     *   outputs[s] = projection(state = activation(LSTMOp(inputs[s])))
+     *
+     * Where LSTMOp is the LSTM op as in {@link OperandType::LSTM},
+     * the "projection" is an optional projection layer from state and output
+     * and the “activation” is the function passed as the
+     * “fused_activation_function” argument (if not “NONE”).
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * Supported tensor rank: 3, either time-major or batch-major.
+     *
+     * All input and output tensors must be of the same type.
+     *
+     * Inputs:
+     * * 0: The input (\f$x_t\f$).
+     *      A 3-D tensor of shape:
+     *        If time-major: [max_time, batch_size, input_size]
+     *        If batch-major: [batch_size, max_time, input_size]
+     *      where “max_time” is the number of timesteps (sequence length),
+     *      “batch_size” corresponds to the batching dimension, and
+     *      “input_size” is the size of the input.
+     * * 1: The input-to-input weights (\f$W_{xi}\f$). Optional.
+     *      A 2-D tensor of shape [num_units, input_size], where “num_units”
+     *      corresponds to the number of cell units.
+     * * 2: The input-to-forget weights (\f$W_{xf}\f$).
+     *      A 2-D tensor of shape [num_units, input_size].
+     * * 3: The input-to-cell weights (\f$W_{xc}\f$).
+     *      A 2-D tensor of shape [num_units, input_size].
+     * * 4: The input-to-output weights (\f$W_{xo}\f$).
+     *      A 2-D tensor of shape [num_units, input_size].
+     * * 5: The recurrent-to-input weights (\f$W_{hi}\f$). Optional.
+     *      A 2-D tensor of shape [num_units, output_size], where “output_size”
+     *      corresponds to either the number of cell units (i.e., “num_units”),
+     *      or the second dimension of the “projection_weights”, if defined.
+     * * 6: The recurrent-to-forget weights (\f$W_{hf}\f$).
+     *      A 2-D tensor of shape [num_units, output_size].
+     * * 7: The recurrent-to-cell weights (\f$W_{hc}\f$).
+     *      A 2-D tensor of shape [num_units, output_size].
+     * * 8: The recurrent-to-output weights (\f$W_{ho}\f$).
+     *      A 2-D tensor of shape [num_units, output_size].
+     * * 9: The cell-to-input weights (\f$W_{ci}\f$). Optional.
+     *      A 1-D tensor of shape [num_units].
+     * * 10:The cell-to-forget weights (\f$W_{cf}\f$). Optional.
+     *      A 1-D tensor of shape [num_units].
+     * * 11:The cell-to-output weights (\f$W_{co}\f$). Optional.
+     *      A 1-D tensor of shape [num_units].
+     * * 12:The input gate bias (\f$b_i\f$). Optional.
+     *      A 1-D tensor of shape [num_units].
+     * * 13:The forget gate bias (\f$b_f\f$).
+     *      A 1-D tensor of shape [num_units].
+     * * 14:The cell bias (\f$b_c\f$).
+     *      A 1-D tensor of shape [num_units].
+     * * 15:The output gate bias (\f$b_o\f$).
+     *      A 1-D tensor of shape [num_units].
+     * * 16:The projection weights (\f$W_{proj}\f$). Optional.
+     *      A 2-D tensor of shape [output_size, num_units].
+     * * 17:The projection bias (\f$b_{proj}\f$). Optional.
+     *      A 1-D tensor of shape [output_size].
+     * * 18:The output state (in) (\f$h_{t-1}\f$).
+     *      A 2-D tensor of shape [batch_size, output_size].
+     * * 19:The cell state (in) (\f$C_{t-1}\f$).
+     *      A 2-D tensor of shape [batch_size, num_units].
+     * * 20:The activation function (\f$g\f$).
+     *      A value indicating the activation function:
+     *      <ul>
+     *      <li>0: None;
+     *      <li>1: Relu;
+     *      <li>3: Relu6;
+     *      <li>4: Tanh;
+     *      <li>6: Sigmoid.
+     *      </ul>
+     * * 21:The clipping threshold (\f$t_{cell}\f$) for the cell state, such
+     *      that values are bound within [-cell_clip, cell_clip]. If set to 0.0
+     *      then clipping is disabled.
+     * * 22:The clipping threshold (\f$t_{proj}\f$) for the output from the
+     *      projection layer, such that values are bound within
+     *      [-proj_clip, proj_clip]. If set to 0.0 then clipping is disabled.
+     * * 23:Time-major if true, batch-major if false.
+     * * 24:The input layer normalization weights. Optional.
+     *      A 1-D tensor of shape [num_units]. Used to rescale normalized inputs
+     *      to activation at input gate.
+     * * 25:The forget layer normalization weights. Optional.
+     *      A 1-D tensor of shape [num_units]. Used to rescale normalized inputs
+     *      to activation at forget gate.
+     * * 26:The cell layer normalization weights. Optional.
+     *      A 1-D tensor of shape [num_units]. Used to rescale normalized inputs
+     *      to activation at cell gate.
+     * * 27:The output layer normalization weights. Optional.
+     *      A 1-D tensor of shape [num_units]. Used to rescale normalized inputs
+     *      to activation at output gate.
+     *
+     * Outputs:
+     * * 0: The output (\f$o_t\f$).
+     *      A 3-D tensor of shape:
+     *        If time-major: [max_time, batch_size, output_size]
+     *        If batch-major: [batch_size, max_time, output_size]
+     */
+    UNIDIRECTIONAL_SEQUENCE_LSTM = @1.2::OperationType:UNIDIRECTIONAL_SEQUENCE_LSTM,
+
+    /**
+     * A recurrent neural network layer that applies a basic RNN cell to a
+     * sequence of inputs.
+     *
+     * This layer unrolls the input along the sequence dimension, and implements
+     * the following operation
+     * for each element in the sequence s = 1...sequence_length:
+     *   outputs[s] = state = activation(inputs[s] * input_weights’ + state *
+     *   recurrent_weights’ + bias)
+     *
+     * Where:
+     * * “input_weights” is a weight matrix that multiplies the inputs;
+     * * “recurrent_weights” is a weight matrix that multiplies the current
+     *    “state” which itself is the output from the previous time step
+     *    computation;
+     * * “bias” is a bias vector (added to each output vector in the batch);
+     * * “activation” is the function passed as the “fused_activation_function”
+     *   argument (if not “NONE”).
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     *
+     * The input tensors must all be the same type.
+     *
+     * Inputs:
+     * * 0: input.
+     *      A 3-D tensor. The shape is defined by the input 6 (timeMajor). If
+     *      it is set to 1, then the input has a shape [maxTime, batchSize,
+     *      inputSize], otherwise the input has a shape [batchSize, maxTime,
+     *      inputSize].
+     * * 1: weights.
+     *      A 2-D tensor of shape [numUnits, inputSize].
+     * * 2: recurrent_weights.
+     *      A 2-D tensor of shape [numUnits, numUnits].
+     * * 3: bias.
+     *      A 1-D tensor of shape [numUnits].
+     * * 4: hidden state
+     *      A 2-D tensor of shape [batchSize, numUnits]. Specifies a hidden
+     *      state input for the first time step of the computation.
+     * * 5: fusedActivationFunction.
+     *      A {@link FusedActivationFunc} value indicating the activation function. If
+     *      “NONE” is specified then it results in a linear activation.
+     * * 6: timeMajor
+     *      An {@link OperandType::INT32} scalar specifying the shape format
+     *      of input and output tensors. Must be set to either 0 or 1.
+     * Outputs:
+     * * 0: output.
+     *      A 3-D tensor. The shape is defined by the input 6 (timeMajor). If
+     *      it is set to 1, then the output has a shape [maxTime, batchSize,
+     *      numUnits], otherwise the output has a shape [batchSize, maxTime,
+     *      numUnits].
+     */
+    UNIDIRECTIONAL_SEQUENCE_RNN = @1.2::OperationType:UNIDIRECTIONAL_SEQUENCE_RNN,
+
+    /**
+     * Resizes images to given size using the nearest neighbor interpretation.
+     *
+     * Resized images must be distorted if their output aspect ratio is not the
+     * same as input aspect ratio. The corner pixels of output may not be the
+     * same as corner pixels of input.
+     *
+     * Supported tensor {@link OperandType}:
+     * * {@link OperandType::TENSOR_FLOAT16}
+     * * {@link OperandType::TENSOR_FLOAT32}
+     * * {@link OperandType::TENSOR_QUANT8_ASYMM}
+     *
+     * Supported tensor rank: 4, with "NHWC" or "NCHW" data layout.
+     * With the default data layout NHWC, the data is stored in the order of:
+     * [batch, height, width, channels]. Alternatively, the data layout could
+     * be NCHW, the data storage order of: [batch, channels, height, width].
+     *
+     * Both resizing by shape and resizing by scale are supported.
+     *
+     * Inputs (resizing by shape):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth], specifying
+     *      the input. Zero batches is supported for this tensor.
+     * * 1: An {@link OperandType::INT32} scalar, specifying the output
+     *      width of the output tensor.
+     * * 2: An {@link OperandType::INT32} scalar, specifying the output
+     *      height of the output tensor.
+     * * 3: An {@link OperandType::BOOL} scalar, default to false.
+     *      Set to true to specify NCHW data layout for input0 and output0.
+     *
+     * Inputs (resizing by scale):
+     * * 0: A 4-D tensor, of shape [batches, height, width, depth], specifying
+     *      the input. Zero batches is supported for this tensor.
+     * * 1: A scalar, specifying width_scale, the scaling factor of the width
+     *      dimension from the input tensor to the output tensor. The output
+     *      width is calculated as new_width = floor(width * width_scale).
+     *      The scalar must be of {@link OperandType::FLOAT16} if input0 is
+     *      of {@link OperandType::TENSOR_FLOAT16} and of
+     *      {@link OperandType::FLOAT32} otherwise.
+     * * 2: A scalar, specifying height_scale, the scaling factor of the height
+     *      dimension from the input tensor to the output tensor. The output
+     *      height is calculated as new_height = floor(height * height_scale).
+     *      The scalar must be of {@link OperandType::FLOAT16} if input0 is
+     *      of {@link OperandType::TENSOR_FLOAT16} and of
+     *      {@link OperandType::FLOAT32} otherwise.
+     * * 3: An {@link OperandType::BOOL} scalar, default to false.
+     *      Set to true to specify NCHW data layout for input0 and output0.
+     *
+     * Outputs:
+     * * 0: The output 4-D tensor, of shape
+     *      [batches, new_height, new_width, depth].
+     *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
+     *      the scale and zeroPoint must be the same as input0.
+     */
+    RESIZE_NEAREST_NEIGHBOR = @1.2::OperationType:RESIZE_NEAREST_NEIGHBOR,
+
+    /**
+     * DEPRECATED. Since NNAPI 1.2, extensions are the preferred alternative to
+     * OEM operation and data types.
+     *
+     * This operation is OEM specific. It should only be used for OEM
+     * applications.
+     */
+    OEM_OPERATION = @1.2::OperationType:OEM_OPERATION,
+    /* ADDING A NEW FUNDAMENTAL OPERATION REQUIRES UPDATING THE VALUE OF
+     * OperationTypeRange::FUNDAMENTAL_MAX.
+     */
+    /* ADDING A NEW OEM OPERATION REQUIRES UPDATING THE VALUE OF
+     * OperationTypeRange::OEM_MAX.
+     */
+};
+
+/**
+ * The range of values in the OperationType enum.
+ */
+enum OperationTypeRange : uint32_t {
+    BASE_MIN        = 0,
+    FUNDAMENTAL_MIN = 0,
+    FUNDAMENTAL_MAX = 94,
+    OEM_MIN         = 10000,
+    OEM_MAX         = 10000,
+    BASE_MAX        = 0xFFFF,
+};
+
 
 /**
  * The capabilities of a driver.
@@ -109,6 +4603,32 @@
 };
 
 /**
+ * Describes one operation of the model's graph.
+ */
+struct Operation {
+    /**
+     * The operation type.
+     *
+     * Besides the values listed in {@link OperationType}, any value above
+     * {@link OperationTypeRange::BASE_MAX} is possible and should be interpreted
+     * as an extension type according to {@link Model::extensionNameToPrefix}.
+     */
+    OperationType type;
+
+    /**
+     * Describes the table that contains the indexes of the inputs of the
+     * operation. The offset is the index in the operandIndexes table.
+     */
+    vec<uint32_t> inputs;
+
+    /**
+     * Describes the table that contains the indexes of the outputs of the
+     * operation. The offset is the index in the operandIndexes table.
+     */
+    vec<uint32_t> outputs;
+};
+
+/**
  * Describes one operand of the model's graph.
  */
 struct Operand {
@@ -233,28 +4753,6 @@
 };
 
 /**
- * Describes one operation of the model's graph.
- */
-struct Operation {
-    /**
-     * The operation type.
-     */
-    OperationType type;
-
-    /**
-     * Describes the table that contains the indexes of the inputs of the
-     * operation. The offset is the index in the operandIndexes table.
-     */
-    vec<uint32_t> inputs;
-
-    /**
-     * Describes the table that contains the indexes of the outputs of the
-     * operation. The offset is the index in the operandIndexes table.
-     */
-    vec<uint32_t> outputs;
-};
-
-/**
  * A Neural Network Model.
  *
  * This includes not only the execution graph, but also constant data such as
diff --git a/neuralnetworks/1.3/types.t b/neuralnetworks/1.3/types.t
index d41cfd2..e06f5d6 100644
--- a/neuralnetworks/1.3/types.t
+++ b/neuralnetworks/1.3/types.t
@@ -44,6 +44,47 @@
     BASE_MAX        = 0xFFFF,
 };
 
+/**
+ * Operation types.
+ *
+ * The type of an operation in a model.
+ */
+enum OperationType : int32_t {
+
+%insert Operation_1.0
+
+%insert Operation_1.1
+
+%insert Operation_1.2
+
+    /**
+     * DEPRECATED. Since NNAPI 1.2, extensions are the preferred alternative to
+     * OEM operation and data types.
+     *
+     * This operation is OEM specific. It should only be used for OEM
+     * applications.
+     */
+    OEM_OPERATION = @1.2::OperationType:OEM_OPERATION,
+    /* ADDING A NEW FUNDAMENTAL OPERATION REQUIRES UPDATING THE VALUE OF
+     * OperationTypeRange::FUNDAMENTAL_MAX.
+     */
+    /* ADDING A NEW OEM OPERATION REQUIRES UPDATING THE VALUE OF
+     * OperationTypeRange::OEM_MAX.
+     */
+};
+
+/**
+ * The range of values in the OperationType enum.
+ */
+enum OperationTypeRange : uint32_t {
+    BASE_MIN        = 0,
+    FUNDAMENTAL_MIN = 0,
+%insert Operation_1.3_MAX
+    OEM_MIN         = 10000,
+    OEM_MAX         = 10000,
+    BASE_MAX        = 0xFFFF,
+};
+
 
 /**
  * The capabilities of a driver.
@@ -80,6 +121,32 @@
 };
 
 /**
+ * Describes one operation of the model's graph.
+ */
+struct Operation {
+    /**
+     * The operation type.
+     *
+     * Besides the values listed in {@link OperationType}, any value above
+     * {@link OperationTypeRange::BASE_MAX} is possible and should be interpreted
+     * as an extension type according to {@link Model::extensionNameToPrefix}.
+     */
+    OperationType type;
+
+    /**
+     * Describes the table that contains the indexes of the inputs of the
+     * operation. The offset is the index in the operandIndexes table.
+     */
+    vec<uint32_t> inputs;
+
+    /**
+     * Describes the table that contains the indexes of the outputs of the
+     * operation. The offset is the index in the operandIndexes table.
+     */
+    vec<uint32_t> outputs;
+};
+
+/**
  * Describes one operand of the model's graph.
  */
 struct Operand {
@@ -204,28 +271,6 @@
 };
 
 /**
- * Describes one operation of the model's graph.
- */
-struct Operation {
-    /**
-     * The operation type.
-     */
-    OperationType type;
-
-    /**
-     * Describes the table that contains the indexes of the inputs of the
-     * operation. The offset is the index in the operandIndexes table.
-     */
-    vec<uint32_t> inputs;
-
-    /**
-     * Describes the table that contains the indexes of the outputs of the
-     * operation. The offset is the index in the operandIndexes table.
-     */
-    vec<uint32_t> outputs;
-};
-
-/**
  * A Neural Network Model.
  *
  * This includes not only the execution graph, but also constant data such as
diff --git a/neuralnetworks/1.3/vts/functional/Android.bp b/neuralnetworks/1.3/vts/functional/Android.bp
index 0f2720e..e2795de 100644
--- a/neuralnetworks/1.3/vts/functional/Android.bp
+++ b/neuralnetworks/1.3/vts/functional/Android.bp
@@ -14,6 +14,24 @@
 // limitations under the License.
 //
 
+cc_library_static {
+    name: "VtsHalNeuralNetworksV1_3Callbacks",
+    defaults: ["VtsHalTargetTestDefaults"],
+    export_include_dirs: ["include"],
+    srcs: [
+        "Callbacks.cpp",
+    ],
+    static_libs: [
+        "android.hardware.neuralnetworks@1.0",
+        "android.hardware.neuralnetworks@1.1",
+        "android.hardware.neuralnetworks@1.2",
+        "android.hardware.neuralnetworks@1.3",
+    ],
+    header_libs: [
+        "libbase_headers",
+    ]
+}
+
 cc_test {
     name: "VtsHalNeuralnetworksV1_3TargetTest",
     defaults: ["VtsHalTargetTestDefaults"],
@@ -44,6 +62,7 @@
         "libneuralnetworks_utils",
         "VtsHalNeuralNetworksV1_0_utils",
         "VtsHalNeuralNetworksV1_2Callbacks",
+        "VtsHalNeuralNetworksV1_3Callbacks",
     ],
     whole_static_libs: [
         "neuralnetworks_generated_V1_0_example",
diff --git a/neuralnetworks/1.3/vts/functional/Callbacks.cpp b/neuralnetworks/1.3/vts/functional/Callbacks.cpp
new file mode 100644
index 0000000..4f08e72
--- /dev/null
+++ b/neuralnetworks/1.3/vts/functional/Callbacks.cpp
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "Callbacks"
+
+#include "1.3/Callbacks.h"
+
+#include <android-base/logging.h>
+
+#include <limits>
+
+namespace android::hardware::neuralnetworks::V1_3::implementation {
+
+using V1_0::ErrorStatus;
+
+// PreparedModelCallback methods begin here
+
+Return<void> PreparedModelCallback::notify(ErrorStatus errorStatus,
+                                           const sp<V1_0::IPreparedModel>& preparedModel) {
+    {
+        std::lock_guard<std::mutex> hold(mMutex);
+
+        // quick-return if object has already been notified
+        if (mNotified) {
+            return Void();
+        }
+
+        // store results and mark as notified
+        mErrorStatus = errorStatus;
+        mPreparedModel = preparedModel;
+        mNotified = true;
+    }
+
+    mCondition.notify_all();
+    return Void();
+}
+
+Return<void> PreparedModelCallback::notify_1_2(ErrorStatus errorStatus,
+                                               const sp<V1_2::IPreparedModel>& preparedModel) {
+    return notify(errorStatus, preparedModel);
+}
+
+Return<void> PreparedModelCallback::notify_1_3(ErrorStatus errorStatus,
+                                               const sp<V1_3::IPreparedModel>& preparedModel) {
+    return notify(errorStatus, preparedModel);
+}
+
+void PreparedModelCallback::wait() const {
+    std::unique_lock<std::mutex> lock(mMutex);
+    mCondition.wait(lock, [this] { return mNotified; });
+}
+
+ErrorStatus PreparedModelCallback::getStatus() const {
+    wait();
+    return mErrorStatus;
+}
+
+sp<V1_0::IPreparedModel> PreparedModelCallback::getPreparedModel() const {
+    wait();
+    return mPreparedModel;
+}
+
+}  // namespace android::hardware::neuralnetworks::V1_3::implementation
diff --git a/neuralnetworks/1.3/vts/functional/CompilationCachingTests.cpp b/neuralnetworks/1.3/vts/functional/CompilationCachingTests.cpp
index 0ac4738..d8a7534 100644
--- a/neuralnetworks/1.3/vts/functional/CompilationCachingTests.cpp
+++ b/neuralnetworks/1.3/vts/functional/CompilationCachingTests.cpp
@@ -28,7 +28,7 @@
 #include <random>
 #include <thread>
 
-#include "1.2/Callbacks.h"
+#include "1.3/Callbacks.h"
 #include "GeneratedTestHarness.h"
 #include "MemoryUtils.h"
 #include "TestHarness.h"
@@ -48,12 +48,11 @@
 namespace android::hardware::neuralnetworks::V1_3::vts::functional {
 
 using namespace test_helper;
+using implementation::PreparedModelCallback;
 using V1_0::ErrorStatus;
 using V1_1::ExecutionPreference;
 using V1_2::Constant;
-using V1_2::IPreparedModel;
 using V1_2::OperationType;
-using V1_2::implementation::PreparedModelCallback;
 
 namespace float32_model {
 
@@ -231,7 +230,7 @@
         ASSERT_NE(kDevice.get(), nullptr);
 
         // Create cache directory. The cache directory and a temporary cache file is always created
-        // to test the behavior of prepareModelFromCache, even when caching is not supported.
+        // to test the behavior of prepareModelFromCache_1_3, even when caching is not supported.
         char cacheDirTemp[] = "/data/local/tmp/TestCompilationCachingXXXXXX";
         char* cacheDir = mkdtemp(cacheDirTemp);
         ASSERT_NE(cacheDir, nullptr);
@@ -370,7 +369,7 @@
         // Launch prepare model from cache.
         sp<PreparedModelCallback> preparedModelCallback = new PreparedModelCallback();
         hidl_array<uint8_t, sizeof(mToken)> cacheToken(mToken);
-        Return<ErrorStatus> prepareLaunchStatus = kDevice->prepareModelFromCache(
+        Return<ErrorStatus> prepareLaunchStatus = kDevice->prepareModelFromCache_1_3(
                 modelCache, dataCache, cacheToken, preparedModelCallback);
         ASSERT_TRUE(prepareLaunchStatus.isOk());
         if (static_cast<ErrorStatus>(prepareLaunchStatus) != ErrorStatus::NONE) {
diff --git a/neuralnetworks/1.3/vts/functional/GeneratedTestHarness.cpp b/neuralnetworks/1.3/vts/functional/GeneratedTestHarness.cpp
index 8a7ed24..2ec2988 100644
--- a/neuralnetworks/1.3/vts/functional/GeneratedTestHarness.cpp
+++ b/neuralnetworks/1.3/vts/functional/GeneratedTestHarness.cpp
@@ -29,6 +29,8 @@
 #include <android/hardware/neuralnetworks/1.2/IPreparedModelCallback.h>
 #include <android/hardware/neuralnetworks/1.2/types.h>
 #include <android/hardware/neuralnetworks/1.3/IDevice.h>
+#include <android/hardware/neuralnetworks/1.3/IPreparedModel.h>
+#include <android/hardware/neuralnetworks/1.3/IPreparedModelCallback.h>
 #include <android/hardware/neuralnetworks/1.3/types.h>
 #include <android/hidl/allocator/1.0/IAllocator.h>
 #include <android/hidl/memory/1.0/IMemory.h>
@@ -42,6 +44,7 @@
 
 #include "1.0/Utils.h"
 #include "1.2/Callbacks.h"
+#include "1.3/Callbacks.h"
 #include "ExecutionBurstController.h"
 #include "MemoryUtils.h"
 #include "TestHarness.h"
@@ -52,24 +55,34 @@
 
 using namespace test_helper;
 using hidl::memory::V1_0::IMemory;
+using implementation::PreparedModelCallback;
 using V1_0::DataLocation;
 using V1_0::ErrorStatus;
 using V1_0::OperandLifeTime;
 using V1_0::Request;
 using V1_1::ExecutionPreference;
 using V1_2::Constant;
-using V1_2::IPreparedModel;
 using V1_2::MeasureTiming;
-using V1_2::OperationType;
 using V1_2::OutputShape;
 using V1_2::SymmPerChannelQuantParams;
 using V1_2::Timing;
 using V1_2::implementation::ExecutionCallback;
-using V1_2::implementation::PreparedModelCallback;
 using HidlToken = hidl_array<uint8_t, static_cast<uint32_t>(Constant::BYTE_SIZE_OF_CACHE_TOKEN)>;
 
+namespace {
+
+enum class Executor { ASYNC, SYNC, BURST };
+
 enum class OutputType { FULLY_SPECIFIED, UNSPECIFIED, INSUFFICIENT };
 
+struct TestConfig {
+    Executor executor;
+    MeasureTiming measureTiming;
+    OutputType outputType;
+};
+
+}  // namespace
+
 Model createModel(const TestModel& testModel) {
     // Model operands.
     hidl_vec<Operand> operands(testModel.operands.size());
@@ -179,7 +192,7 @@
 static Return<ErrorStatus> ExecutePreparedModel(const sp<IPreparedModel>& preparedModel,
                                                 const Request& request, MeasureTiming measure,
                                                 sp<ExecutionCallback>& callback) {
-    return preparedModel->execute_1_2(request, measure, callback);
+    return preparedModel->execute_1_3(request, measure, callback);
 }
 static Return<ErrorStatus> ExecutePreparedModel(const sp<IPreparedModel>& preparedModel,
                                                 const Request& request, MeasureTiming measure,
@@ -204,31 +217,31 @@
     return android::nn::ExecutionBurstController::create(preparedModel,
                                                          std::chrono::microseconds{0});
 }
-enum class Executor { ASYNC, SYNC, BURST };
 
 void EvaluatePreparedModel(const sp<IPreparedModel>& preparedModel, const TestModel& testModel,
-                           Executor executor, MeasureTiming measure, OutputType outputType) {
+                           const TestConfig& testConfig) {
     // If output0 does not have size larger than one byte, we can not test with insufficient buffer.
-    if (outputType == OutputType::INSUFFICIENT && !isOutputSizeGreaterThanOne(testModel, 0)) {
+    if (testConfig.outputType == OutputType::INSUFFICIENT &&
+        !isOutputSizeGreaterThanOne(testModel, 0)) {
         return;
     }
 
     Request request = createRequest(testModel);
-    if (outputType == OutputType::INSUFFICIENT) {
+    if (testConfig.outputType == OutputType::INSUFFICIENT) {
         makeOutputInsufficientSize(/*outputIndex=*/0, &request);
     }
 
     ErrorStatus executionStatus;
     hidl_vec<OutputShape> outputShapes;
     Timing timing;
-    switch (executor) {
+    switch (testConfig.executor) {
         case Executor::ASYNC: {
             SCOPED_TRACE("asynchronous");
 
             // launch execution
             sp<ExecutionCallback> executionCallback = new ExecutionCallback();
-            Return<ErrorStatus> executionLaunchStatus =
-                    ExecutePreparedModel(preparedModel, request, measure, executionCallback);
+            Return<ErrorStatus> executionLaunchStatus = ExecutePreparedModel(
+                    preparedModel, request, testConfig.measureTiming, executionCallback);
             ASSERT_TRUE(executionLaunchStatus.isOk());
             EXPECT_EQ(ErrorStatus::NONE, static_cast<ErrorStatus>(executionLaunchStatus));
 
@@ -244,8 +257,8 @@
             SCOPED_TRACE("synchronous");
 
             // execute
-            Return<ErrorStatus> executionReturnStatus =
-                    ExecutePreparedModel(preparedModel, request, measure, &outputShapes, &timing);
+            Return<ErrorStatus> executionReturnStatus = ExecutePreparedModel(
+                    preparedModel, request, testConfig.measureTiming, &outputShapes, &timing);
             ASSERT_TRUE(executionReturnStatus.isOk());
             executionStatus = static_cast<ErrorStatus>(executionReturnStatus);
 
@@ -268,14 +281,14 @@
             // execute burst
             int n;
             std::tie(n, outputShapes, timing, std::ignore) =
-                    controller->compute(request, measure, keys);
+                    controller->compute(request, testConfig.measureTiming, keys);
             executionStatus = nn::convertResultCodeToErrorStatus(n);
 
             break;
         }
     }
 
-    if (outputType != OutputType::FULLY_SPECIFIED &&
+    if (testConfig.outputType != OutputType::FULLY_SPECIFIED &&
         executionStatus == ErrorStatus::GENERAL_FAILURE) {
         LOG(INFO) << "NN VTS: Early termination of test because vendor service cannot "
                      "execute model that it does not support.";
@@ -284,7 +297,7 @@
                   << std::endl;
         GTEST_SKIP();
     }
-    if (measure == MeasureTiming::NO) {
+    if (testConfig.measureTiming == MeasureTiming::NO) {
         EXPECT_EQ(UINT64_MAX, timing.timeOnDevice);
         EXPECT_EQ(UINT64_MAX, timing.timeInDriver);
     } else {
@@ -293,7 +306,7 @@
         }
     }
 
-    switch (outputType) {
+    switch (testConfig.outputType) {
         case OutputType::FULLY_SPECIFIED:
             // If the model output operands are fully specified, outputShapes must be either
             // either empty, or have the same number of elements as the number of outputs.
@@ -331,44 +344,29 @@
 
 void EvaluatePreparedModel(const sp<IPreparedModel>& preparedModel, const TestModel& testModel,
                            bool testDynamicOutputShape) {
+    std::initializer_list<OutputType> outputTypesList;
+    std::initializer_list<MeasureTiming> measureTimingList;
+    std::initializer_list<Executor> executorList;
+
     if (testDynamicOutputShape) {
-        EvaluatePreparedModel(preparedModel, testModel, Executor::ASYNC, MeasureTiming::NO,
-                              OutputType::UNSPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::SYNC, MeasureTiming::NO,
-                              OutputType::UNSPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::BURST, MeasureTiming::NO,
-                              OutputType::UNSPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::ASYNC, MeasureTiming::YES,
-                              OutputType::UNSPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::SYNC, MeasureTiming::YES,
-                              OutputType::UNSPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::BURST, MeasureTiming::YES,
-                              OutputType::UNSPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::ASYNC, MeasureTiming::NO,
-                              OutputType::INSUFFICIENT);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::SYNC, MeasureTiming::NO,
-                              OutputType::INSUFFICIENT);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::BURST, MeasureTiming::NO,
-                              OutputType::INSUFFICIENT);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::ASYNC, MeasureTiming::YES,
-                              OutputType::INSUFFICIENT);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::SYNC, MeasureTiming::YES,
-                              OutputType::INSUFFICIENT);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::BURST, MeasureTiming::YES,
-                              OutputType::INSUFFICIENT);
+        outputTypesList = {OutputType::UNSPECIFIED, OutputType::INSUFFICIENT};
+        measureTimingList = {MeasureTiming::NO, MeasureTiming::YES};
+        executorList = {Executor::ASYNC, Executor::SYNC, Executor::BURST};
     } else {
-        EvaluatePreparedModel(preparedModel, testModel, Executor::ASYNC, MeasureTiming::NO,
-                              OutputType::FULLY_SPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::SYNC, MeasureTiming::NO,
-                              OutputType::FULLY_SPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::BURST, MeasureTiming::NO,
-                              OutputType::FULLY_SPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::ASYNC, MeasureTiming::YES,
-                              OutputType::FULLY_SPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::SYNC, MeasureTiming::YES,
-                              OutputType::FULLY_SPECIFIED);
-        EvaluatePreparedModel(preparedModel, testModel, Executor::BURST, MeasureTiming::YES,
-                              OutputType::FULLY_SPECIFIED);
+        outputTypesList = {OutputType::FULLY_SPECIFIED};
+        measureTimingList = {MeasureTiming::NO, MeasureTiming::YES};
+        executorList = {Executor::ASYNC, Executor::SYNC, Executor::BURST};
+    }
+
+    for (const OutputType outputType : outputTypesList) {
+        for (const MeasureTiming measureTiming : measureTimingList) {
+            for (const Executor executor : executorList) {
+                const TestConfig testConfig = {.executor = executor,
+                                               .measureTiming = measureTiming,
+                                               .outputType = outputType};
+                EvaluatePreparedModel(preparedModel, testModel, testConfig);
+            }
+        }
     }
 }
 
diff --git a/neuralnetworks/1.3/vts/functional/GeneratedTestHarness.h b/neuralnetworks/1.3/vts/functional/GeneratedTestHarness.h
index b9277cf..45cff5b 100644
--- a/neuralnetworks/1.3/vts/functional/GeneratedTestHarness.h
+++ b/neuralnetworks/1.3/vts/functional/GeneratedTestHarness.h
@@ -17,8 +17,8 @@
 #ifndef ANDROID_HARDWARE_NEURALNETWORKS_V1_3_GENERATED_TEST_HARNESS_H
 #define ANDROID_HARDWARE_NEURALNETWORKS_V1_3_GENERATED_TEST_HARNESS_H
 
-#include <android/hardware/neuralnetworks/1.2/IPreparedModel.h>
 #include <android/hardware/neuralnetworks/1.3/IDevice.h>
+#include <android/hardware/neuralnetworks/1.3/IPreparedModel.h>
 #include <android/hardware/neuralnetworks/1.3/types.h>
 #include <functional>
 #include <vector>
@@ -55,10 +55,9 @@
 
 Model createModel(const test_helper::TestModel& testModel);
 
-void PrepareModel(const sp<IDevice>& device, const Model& model,
-                  sp<V1_2::IPreparedModel>* preparedModel);
+void PrepareModel(const sp<IDevice>& device, const Model& model, sp<IPreparedModel>* preparedModel);
 
-void EvaluatePreparedModel(const sp<V1_2::IPreparedModel>& preparedModel,
+void EvaluatePreparedModel(const sp<IPreparedModel>& preparedModel,
                            const test_helper::TestModel& testModel, bool testDynamicOutputShape);
 
 }  // namespace android::hardware::neuralnetworks::V1_3::vts::functional
diff --git a/neuralnetworks/1.3/vts/functional/TestAssertions.cpp b/neuralnetworks/1.3/vts/functional/TestAssertions.cpp
index 7361078..a7569e6 100644
--- a/neuralnetworks/1.3/vts/functional/TestAssertions.cpp
+++ b/neuralnetworks/1.3/vts/functional/TestAssertions.cpp
@@ -25,8 +25,6 @@
 #define CHECK_TEST_ENUM(EnumType, enumValue) \
     static_assert(static_cast<EnumType>(Test##EnumType::enumValue) == EnumType::enumValue)
 
-using V1_2::OperationType;
-
 CHECK_TEST_ENUM(OperandType, FLOAT32);
 CHECK_TEST_ENUM(OperandType, INT32);
 CHECK_TEST_ENUM(OperandType, UINT32);
diff --git a/neuralnetworks/1.3/vts/functional/ValidateBurst.cpp b/neuralnetworks/1.3/vts/functional/ValidateBurst.cpp
index 2c97294..7df8046 100644
--- a/neuralnetworks/1.3/vts/functional/ValidateBurst.cpp
+++ b/neuralnetworks/1.3/vts/functional/ValidateBurst.cpp
@@ -40,7 +40,6 @@
 using V1_2::FmqResultDatum;
 using V1_2::IBurstCallback;
 using V1_2::IBurstContext;
-using V1_2::IPreparedModel;
 using V1_2::MeasureTiming;
 using V1_2::Timing;
 using ExecutionBurstCallback = ExecutionBurstController::ExecutionBurstCallback;
diff --git a/neuralnetworks/1.3/vts/functional/ValidateModel.cpp b/neuralnetworks/1.3/vts/functional/ValidateModel.cpp
index 44b32a9..46bbd3f 100644
--- a/neuralnetworks/1.3/vts/functional/ValidateModel.cpp
+++ b/neuralnetworks/1.3/vts/functional/ValidateModel.cpp
@@ -17,20 +17,18 @@
 #define LOG_TAG "neuralnetworks_hidl_hal_test"
 
 #include "1.0/Utils.h"
-#include "1.2/Callbacks.h"
+#include "1.3/Callbacks.h"
 #include "GeneratedTestHarness.h"
 #include "VtsHalNeuralnetworks.h"
 
 namespace android::hardware::neuralnetworks::V1_3::vts::functional {
 
+using implementation::PreparedModelCallback;
 using V1_0::ErrorStatus;
 using V1_0::OperandLifeTime;
 using V1_1::ExecutionPreference;
-using V1_2::IPreparedModel;
-using V1_2::OperationType;
 using V1_2::OperationTypeRange;
 using V1_2::SymmPerChannelQuantParams;
-using V1_2::implementation::PreparedModelCallback;
 using HidlToken =
         hidl_array<uint8_t, static_cast<uint32_t>(V1_2::Constant::BYTE_SIZE_OF_CACHE_TOKEN)>;
 
@@ -61,7 +59,7 @@
     preparedModelCallback->wait();
     ErrorStatus prepareReturnStatus = preparedModelCallback->getStatus();
     ASSERT_EQ(ErrorStatus::INVALID_ARGUMENT, prepareReturnStatus);
-    sp<IPreparedModel> preparedModel = getPreparedModel_1_2(preparedModelCallback);
+    sp<IPreparedModel> preparedModel = getPreparedModel_1_3(preparedModelCallback);
     ASSERT_EQ(nullptr, preparedModel.get());
 }
 
diff --git a/neuralnetworks/1.3/vts/functional/ValidateRequest.cpp b/neuralnetworks/1.3/vts/functional/ValidateRequest.cpp
index c00512c..2cf30d5 100644
--- a/neuralnetworks/1.3/vts/functional/ValidateRequest.cpp
+++ b/neuralnetworks/1.3/vts/functional/ValidateRequest.cpp
@@ -29,7 +29,6 @@
 
 using V1_0::ErrorStatus;
 using V1_0::Request;
-using V1_2::IPreparedModel;
 using V1_2::MeasureTiming;
 using V1_2::OutputShape;
 using V1_2::Timing;
@@ -61,11 +60,11 @@
 
     // asynchronous
     {
-        SCOPED_TRACE(message + " [execute_1_2]");
+        SCOPED_TRACE(message + " [execute_1_3]");
 
         sp<ExecutionCallback> executionCallback = new ExecutionCallback();
         Return<ErrorStatus> executeLaunchStatus =
-                preparedModel->execute_1_2(request, measure, executionCallback);
+                preparedModel->execute_1_3(request, measure, executionCallback);
         ASSERT_TRUE(executeLaunchStatus.isOk());
         ASSERT_EQ(ErrorStatus::INVALID_ARGUMENT, static_cast<ErrorStatus>(executeLaunchStatus));
 
diff --git a/neuralnetworks/1.3/vts/functional/VtsHalNeuralnetworks.cpp b/neuralnetworks/1.3/vts/functional/VtsHalNeuralnetworks.cpp
index 4f0e150..625913d 100644
--- a/neuralnetworks/1.3/vts/functional/VtsHalNeuralnetworks.cpp
+++ b/neuralnetworks/1.3/vts/functional/VtsHalNeuralnetworks.cpp
@@ -21,8 +21,8 @@
 #include <hidl/ServiceManagement.h>
 #include <string>
 #include <utility>
-#include "1.0/Callbacks.h"
 #include "1.0/Utils.h"
+#include "1.3/Callbacks.h"
 #include "GeneratedTestHarness.h"
 #include "TestHarness.h"
 
@@ -30,11 +30,10 @@
 
 using HidlToken =
         hidl_array<uint8_t, static_cast<uint32_t>(V1_2::Constant::BYTE_SIZE_OF_CACHE_TOKEN)>;
+using implementation::PreparedModelCallback;
 using V1_0::ErrorStatus;
 using V1_0::Request;
 using V1_1::ExecutionPreference;
-using V1_2::IPreparedModel;
-using V1_2::implementation::PreparedModelCallback;
 
 // internal helper function
 void createPreparedModel(const sp<IDevice>& device, const Model& model,
@@ -64,7 +63,7 @@
     // retrieve prepared model
     preparedModelCallback->wait();
     const ErrorStatus prepareReturnStatus = preparedModelCallback->getStatus();
-    *preparedModel = getPreparedModel_1_2(preparedModelCallback);
+    *preparedModel = getPreparedModel_1_3(preparedModelCallback);
 
     // The getSupportedOperations_1_3 call returns a list of operations that are
     // guaranteed not to fail if prepareModel_1_3 is called, and
@@ -165,7 +164,7 @@
 
 INSTANTIATE_GENERATED_TEST(ValidationTest, [](const test_helper::TestModel&) { return true; });
 
-sp<IPreparedModel> getPreparedModel_1_2(const sp<PreparedModelCallback>& callback) {
+sp<IPreparedModel> getPreparedModel_1_3(const sp<PreparedModelCallback>& callback) {
     sp<V1_0::IPreparedModel> preparedModelV1_0 = callback->getPreparedModel();
     return IPreparedModel::castFrom(preparedModelV1_0).withDefault(nullptr);
 }
diff --git a/neuralnetworks/1.3/vts/functional/VtsHalNeuralnetworks.h b/neuralnetworks/1.3/vts/functional/VtsHalNeuralnetworks.h
index fc654ce..8cb42d4 100644
--- a/neuralnetworks/1.3/vts/functional/VtsHalNeuralnetworks.h
+++ b/neuralnetworks/1.3/vts/functional/VtsHalNeuralnetworks.h
@@ -17,12 +17,12 @@
 #ifndef ANDROID_HARDWARE_NEURALNETWORKS_V1_3_VTS_HAL_NEURALNETWORKS_H
 #define ANDROID_HARDWARE_NEURALNETWORKS_V1_3_VTS_HAL_NEURALNETWORKS_H
 
-#include <android/hardware/neuralnetworks/1.2/IPreparedModel.h>
 #include <android/hardware/neuralnetworks/1.3/IDevice.h>
+#include <android/hardware/neuralnetworks/1.3/IPreparedModel.h>
 #include <android/hardware/neuralnetworks/1.3/types.h>
 #include <gtest/gtest.h>
 #include "1.0/Utils.h"
-#include "1.2/Callbacks.h"
+#include "1.3/Callbacks.h"
 
 namespace android::hardware::neuralnetworks::V1_3::vts::functional {
 
@@ -47,11 +47,10 @@
 // Create an IPreparedModel object. If the model cannot be prepared,
 // "preparedModel" will be nullptr instead.
 void createPreparedModel(const sp<IDevice>& device, const Model& model,
-                         sp<V1_2::IPreparedModel>* preparedModel);
+                         sp<IPreparedModel>* preparedModel);
 
 // Utility function to get PreparedModel from callback and downcast to V1_2.
-sp<V1_2::IPreparedModel> getPreparedModel_1_2(
-        const sp<V1_2::implementation::PreparedModelCallback>& callback);
+sp<IPreparedModel> getPreparedModel_1_3(const sp<implementation::PreparedModelCallback>& callback);
 
 }  // namespace android::hardware::neuralnetworks::V1_3::vts::functional
 
diff --git a/neuralnetworks/1.3/vts/functional/include/1.3/Callbacks.h b/neuralnetworks/1.3/vts/functional/include/1.3/Callbacks.h
new file mode 100644
index 0000000..fb19a84
--- /dev/null
+++ b/neuralnetworks/1.3/vts/functional/include/1.3/Callbacks.h
@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_NEURALNETWORKS_V1_3_CALLBACKS_H
+#define ANDROID_HARDWARE_NEURALNETWORKS_V1_3_CALLBACKS_H
+
+#include <android-base/thread_annotations.h>
+#include <android/hardware/neuralnetworks/1.0/IPreparedModelCallback.h>
+#include <android/hardware/neuralnetworks/1.2/IPreparedModelCallback.h>
+#include <android/hardware/neuralnetworks/1.3/IPreparedModelCallback.h>
+#include <hidl/Status.h>
+#include <condition_variable>
+#include <mutex>
+
+/*
+ * The Callback classes are used internally by the NeuralNetworks runtime to
+ * synchronize between different threads. An asynchronous task is launched
+ * paired with a callback object. When a client thread requires the output being
+ * generated by the asynchronous task, the client thread can wait for the result
+ * and be blocked until it has completed. Any wait may safely be called
+ * concurrently, even on the same callback object. When the asynchronous task
+ * has finished its workload, it must immediately call "notify*". If the
+ * asynchronous task has failed to launch, the function that tried to launch the
+ * asynchronous task must immediately call "notify*". This "notify*" call
+ * awakens any client threads waiting on the callback object.
+ *
+ * These classes exist to enable synchronization across HIDL. When
+ * synchronization is only required in the same process, consider using
+ * std::future, std::mutex, std::condition_variable, or std::experimental::latch
+ * instead.
+ */
+
+namespace android::hardware::neuralnetworks::V1_3::implementation {
+
+/**
+ * The PreparedModelCallback class is used to receive the error status of
+ * preparing a model as well as the prepared model from a task executing
+ * asynchronously with respect to the runtime. If a calling thread calls wait
+ * or get* on a PreparedModelCallback object and the corresponding asynchronous
+ * task has not finished preparing the model, the calling thread will block
+ * until the asynchronous task has called notify*.
+ *
+ * If the callback object is notified more than once, only the results of the
+ * first call to notify* are used, and the results from subsequent calls are
+ * discarded.
+ *
+ * This callback object is passed as an argument to IDevice::prepareModel*.
+ */
+class PreparedModelCallback : public IPreparedModelCallback {
+  public:
+    /**
+     * IPreparedModelCallback::notify marks the callback object with the return
+     * status of the asynchronous model preparation along with the prepared
+     * model, and allows all prior and future wait calls on the
+     * PreparedModelCallback object to proceed.
+     *
+     * One of IPreparedModelCallback::notify, IPreparedModelCallback::notify_1_2,
+     * or IPreparedModelCallback::notify_1_3 must be called on a given
+     * PreparedModelCallback object.
+     *
+     * If the callback object is notified more than once, only the results of
+     * the first call to notify* are used, and the results from subsequent calls
+     * are discarded.
+     *
+     * @param status Error status returned from asynchronously preparing the
+     *     model; will be:
+     *     - NONE if the asynchronous preparation was successful
+     *     - DEVICE_UNAVAILABLE if driver is offline or busy
+     *     - GENERAL_FAILURE if there is an unspecified error
+     *     - INVALID_ARGUMENT if the input model is invalid
+     * @param preparedModel Returned model that has been prepared for execution,
+     *     nullptr if the model was unable to be prepared.
+     */
+    Return<void> notify(V1_0::ErrorStatus status,
+                        const sp<V1_0::IPreparedModel>& preparedModel) override;
+
+    /**
+     * IPreparedModelCallback::notify_1_2 marks the callback object with the
+     * return status of the asynchronous model preparation along with the
+     * prepared model, and allows all prior and future wait calls on the
+     * PreparedModelCallback object to proceed.
+     *
+     * One of IPreparedModelCallback::notify, IPreparedModelCallback::notify_1_2,
+     * or IPreparedModelCallback::notify_1_3 must be called on a given
+     * PreparedModelCallback object.
+     *
+     * If the callback object is notified more than once, only the results of
+     * the first call to notify* are used, and the results from subsequent calls
+     * are discarded.
+     *
+     * @param status Error status returned from asynchronously preparing the
+     *     model; will be:
+     *     - NONE if the asynchronous preparation was successful
+     *     - DEVICE_UNAVAILABLE if driver is offline or busy
+     *     - GENERAL_FAILURE if there is an unspecified error
+     *     - INVALID_ARGUMENT if the input model is invalid
+     * @param preparedModel Returned model that has been prepared for execution,
+     *     nullptr if the model was unable to be prepared.
+     */
+    Return<void> notify_1_2(V1_0::ErrorStatus status,
+                            const sp<V1_2::IPreparedModel>& preparedModel) override;
+
+    /**
+     * IPreparedModelCallback::notify_1_3 marks the callback object with the
+     * return status of the asynchronous model preparation along with the
+     * prepared model, and allows all prior and future wait calls on the
+     * PreparedModelCallback object to proceed.
+     *
+     * One of IPreparedModelCallback::notify, IPreparedModelCallback::notify_1_2,
+     * or IPreparedModelCallback::notify_1_3 must be called on a given
+     * PreparedModelCallback object.
+     *
+     * If the callback object is notified more than once, only the results of
+     * the first call to notify* are used, and the results from subsequent calls
+     * are discarded.
+     *
+     * @param status Error status returned from asynchronously preparing the
+     *     model; will be:
+     *     - NONE if the asynchronous preparation was successful
+     *     - DEVICE_UNAVAILABLE if driver is offline or busy
+     *     - GENERAL_FAILURE if there is an unspecified error
+     *     - INVALID_ARGUMENT if the input model is invalid
+     * @param preparedModel Returned model that has been prepared for execution,
+     *     nullptr if the model was unable to be prepared.
+     */
+    Return<void> notify_1_3(V1_0::ErrorStatus status,
+                            const sp<V1_3::IPreparedModel>& preparedModel) override;
+
+    /**
+     * PreparedModelCallback::wait blocks until notify* has been called on the
+     * callback object.
+     */
+    void wait() const;
+
+    /**
+     * Retrieves the error status returned from the asynchronous task launched
+     * by IDevice::prepareModel*. If IDevice::prepareModel* has not finished
+     * asynchronously preparing the model, this call will block until the
+     * asynchronous task notifies the object.
+     *
+     * @return status Error status returned from asynchronously preparing the
+     *     model; will be:
+     *     - NONE if the asynchronous preparation was successful
+     *     - DEVICE_UNAVAILABLE if driver is offline or busy
+     *     - GENERAL_FAILURE if there is an unspecified error
+     *     - INVALID_ARGUMENT if the input model is invalid
+     */
+    V1_0::ErrorStatus getStatus() const;
+
+    /**
+     * Retrieves the model that has been prepared for execution from the
+     * asynchronous task launched by IDevice::prepareModel*. If
+     * IDevice::prepareModel* has not finished asynchronously preparing the
+     * model, this call will block until the asynchronous task notifies the
+     * object.
+     *
+     * @return preparedModel Returned model that has been prepared for
+     *     execution, nullptr if the model was unable to be prepared.
+     */
+    sp<V1_0::IPreparedModel> getPreparedModel() const;
+
+  private:
+    mutable std::mutex mMutex;
+    mutable std::condition_variable mCondition;
+    bool mNotified GUARDED_BY(mMutex) = false;
+    V1_0::ErrorStatus mErrorStatus = V1_0::ErrorStatus::GENERAL_FAILURE;
+    sp<V1_0::IPreparedModel> mPreparedModel;
+};
+
+}  // namespace android::hardware::neuralnetworks::V1_3::implementation
+
+#endif  // ANDROID_HARDWARE_NEURALNETWORKS_V1_3_CALLBACKS_H
diff --git a/radio/1.5/types.hal b/radio/1.5/types.hal
index 216ca1f..9ef1d31 100644
--- a/radio/1.5/types.hal
+++ b/radio/1.5/types.hal
@@ -54,7 +54,9 @@
      * Reference Signal Signal to Noise Ratio
      * Range: -20 dB to -30 dB;
      * Used RAN: EUTRAN
-     * Reference: 3GPP TS 36.101 8.1.1
+     * Note: this field is optional; how to support it can be decided by the
+     * corresponding vendor. Though the response code is not enforced,
+     * vendor's implementation must ensure this interface not crashing.
      */
     RSSNR = 5,
     /**
@@ -111,4 +113,4 @@
      *  Next-Generation Radio Access Network (NGRAN)
      */
     NGRAN = 6,
-};
\ No newline at end of file
+};
diff --git a/radio/1.5/vts/functional/radio_hidl_hal_api.cpp b/radio/1.5/vts/functional/radio_hidl_hal_api.cpp
index 650ede4..d173411 100644
--- a/radio/1.5/vts/functional/radio_hidl_hal_api.cpp
+++ b/radio/1.5/vts/functional/radio_hidl_hal_api.cpp
@@ -179,10 +179,6 @@
     EXPECT_EQ(std::cv_status::no_timeout, wait());
     EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_v1_5->rspInfo.type);
     EXPECT_EQ(serial, radioRsp_v1_5->rspInfo.serial);
-
-    ALOGI("setSignalStrengthReportingCriteria_1_5_Eutran, rspInfo.error = %s\n",
-          toString(radioRsp_v1_5->rspInfo.error).c_str());
-    ASSERT_TRUE(CheckAnyOfErrors(radioRsp_v1_5->rspInfo.error, {RadioError::NONE}));
 }
 
 /*
@@ -279,4 +275,4 @@
     ALOGI("setSignalStrengthReportingCriteria_1_5_NGRAN_SSSINR, rspInfo.error = %s\n",
           toString(radioRsp_v1_5->rspInfo.error).c_str());
     ASSERT_TRUE(CheckAnyOfErrors(radioRsp_v1_5->rspInfo.error, {RadioError::NONE}));
-}
\ No newline at end of file
+}
diff --git a/sensors/1.0/default/OWNERS b/sensors/1.0/default/OWNERS
index 2031d84..90c2330 100644
--- a/sensors/1.0/default/OWNERS
+++ b/sensors/1.0/default/OWNERS
@@ -1,2 +1,3 @@
+arthuri@google.com
 bduddie@google.com
-bstack@google.com
+stange@google.com
diff --git a/sensors/1.0/vts/functional/OWNERS b/sensors/1.0/vts/functional/OWNERS
index 759d87b..892da15 100644
--- a/sensors/1.0/vts/functional/OWNERS
+++ b/sensors/1.0/vts/functional/OWNERS
@@ -1,6 +1,7 @@
 # Sensors team
+arthuri@google.com
 bduddie@google.com
-bstack@google.com
+stange@google.com
 
 # VTS team
 trong@google.com
diff --git a/sensors/2.0/default/OWNERS b/sensors/2.0/default/OWNERS
index 2031d84..90c2330 100644
--- a/sensors/2.0/default/OWNERS
+++ b/sensors/2.0/default/OWNERS
@@ -1,2 +1,3 @@
+arthuri@google.com
 bduddie@google.com
-bstack@google.com
+stange@google.com
diff --git a/sensors/2.0/vts/functional/OWNERS b/sensors/2.0/vts/functional/OWNERS
index 759d87b..892da15 100644
--- a/sensors/2.0/vts/functional/OWNERS
+++ b/sensors/2.0/vts/functional/OWNERS
@@ -1,6 +1,7 @@
 # Sensors team
+arthuri@google.com
 bduddie@google.com
-bstack@google.com
+stange@google.com
 
 # VTS team
 trong@google.com
diff --git a/sensors/2.0/vts/functional/SensorsHidlEnvironmentV2_0.cpp b/sensors/2.0/vts/functional/SensorsHidlEnvironmentV2_0.cpp
index 03fcc17..dc54f27 100644
--- a/sensors/2.0/vts/functional/SensorsHidlEnvironmentV2_0.cpp
+++ b/sensors/2.0/vts/functional/SensorsHidlEnvironmentV2_0.cpp
@@ -130,8 +130,8 @@
 
 void SensorsHidlEnvironmentV2_0::startPollingThread() {
     mStopThread = false;
-    mPollThread = std::thread(pollingThread, this);
     mEvents.reserve(MAX_RECEIVE_BUFFER_EVENT_COUNT);
+    mPollThread = std::thread(pollingThread, this);
 }
 
 void SensorsHidlEnvironmentV2_0::readEvents() {
diff --git a/sensors/common/vts/OWNERS b/sensors/common/vts/OWNERS
index 759d87b..892da15 100644
--- a/sensors/common/vts/OWNERS
+++ b/sensors/common/vts/OWNERS
@@ -1,6 +1,7 @@
 # Sensors team
+arthuri@google.com
 bduddie@google.com
-bstack@google.com
+stange@google.com
 
 # VTS team
 trong@google.com
diff --git a/sensors/common/vts/utils/OWNERS b/sensors/common/vts/utils/OWNERS
index 759d87b..892da15 100644
--- a/sensors/common/vts/utils/OWNERS
+++ b/sensors/common/vts/utils/OWNERS
@@ -1,6 +1,7 @@
 # Sensors team
+arthuri@google.com
 bduddie@google.com
-bstack@google.com
+stange@google.com
 
 # VTS team
 trong@google.com
diff --git a/tv/cec/1.0/config/sadConfig.xsd b/tv/cec/1.0/config/sadConfig.xsd
new file mode 100644
index 0000000..7f99311
--- /dev/null
+++ b/tv/cec/1.0/config/sadConfig.xsd
@@ -0,0 +1,86 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2019 The Android Open Source Project
+
+         Licensed under the Apache License, Version 2.0 (the "License");
+         you may not use this file except in compliance with the License.
+         You may obtain a copy of the License at
+
+                    http://www.apache.org/licenses/LICENSE-2.0
+
+         Unless required by applicable law or agreed to in writing, software
+         distributed under the License is distributed on an "AS IS" BASIS,
+         WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+         See the License for the specific language governing permissions and
+         limitations under the License.
+-->
+<xs:schema version="1.0"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema">
+    <xs:include schemaLocation="../../../../audio/4.0/config/audio_policy_configuration.xsd"/>
+    <xs:complexType name="config">
+        <xs:annotation>
+            <xs:documentation xml:lang="en">
+                List the config versions supported by Short Audio Descriptor(SAD) config.
+            </xs:documentation>
+        </xs:annotation>
+        <xs:sequence>
+            <xs:element name="device" type="device" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+        <xs:attribute name="version" type="version"/>
+    </xs:complexType>
+    <xs:complexType name="device">
+        <xs:annotation>
+            <xs:documentation xml:lang="en">
+                Device section:
+                There is a list of configurations in this SAD config for all the input audio
+                devices that the current Android device supports.
+                Each device has the following attributes:
+                    "type": type of the audio device.
+                And the following element
+                    <supportedFormat/>: the supported format info of the device. There can be
+                                        multiple formats supported by one audio device.
+            </xs:documentation>
+        </xs:annotation>
+        <xs:sequence>
+            <xs:element name="supportedFormat" type="supportedFormat" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+        <xs:attribute name="type" type="extendableAudioDevice" use="required"/>
+    </xs:complexType>
+    <xs:complexType name="supportedFormat">
+        <xs:annotation>
+            <xs:documentation xml:lang="en">
+                SupportedFormat section:
+                The details of the short audio descriptor of a specific audio format
+                supported by the audio device. Attributes as follows:
+                    "format": format enum of the current supported format.
+                    "descriptor": three-byte short audio descriptor for the given format in hex.
+            </xs:documentation>
+        </xs:annotation>
+        <xs:attribute name="format" type="hdmiAudioFormat" use="required"/>
+        <xs:attribute name="descriptor" type="descriptor" use="required"/>
+    </xs:complexType>
+    <xs:simpleType name="descriptor">
+        <xs:restriction base="xs:string">
+            <xs:pattern value="[a-fA-F0-9]{6}"/>
+        </xs:restriction>
+    </xs:simpleType>
+    <xs:simpleType name="hdmiAudioFormat">
+        <xs:restriction base="xs:string">
+            <xs:enumeration value="AUDIO_FORMAT_NONE"/>
+            <xs:enumeration value="AUDIO_FORMAT_LPCM"/>
+            <xs:enumeration value="AUDIO_FORMAT_DD"/>
+            <xs:enumeration value="AUDIO_FORMAT_MPEG1"/>
+            <xs:enumeration value="AUDIO_FORMAT_MP3"/>
+            <xs:enumeration value="AUDIO_FORMAT_MPEG2"/>
+            <xs:enumeration value="AUDIO_FORMAT_AAC"/>
+            <xs:enumeration value="AUDIO_FORMAT_DTS"/>
+            <xs:enumeration value="AUDIO_FORMAT_ATRAC"/>
+            <xs:enumeration value="AUDIO_FORMAT_ONEBITAUDIO"/>
+            <xs:enumeration value="AUDIO_FORMAT_DDP"/>
+            <xs:enumeration value="AUDIO_FORMAT_DTSHD"/>
+            <xs:enumeration value="AUDIO_FORMAT_TRUEHD"/>
+            <xs:enumeration value="AUDIO_FORMAT_DST"/>
+            <xs:enumeration value="AUDIO_FORMAT_WMAPRO"/>
+        </xs:restriction>
+    </xs:simpleType>
+    <xs:element name="config" type="config"/>
+</xs:schema>
diff --git a/tv/tuner/1.0/IFrontend.hal b/tv/tuner/1.0/IFrontend.hal
index ceda2b3..756ab46 100644
--- a/tv/tuner/1.0/IFrontend.hal
+++ b/tv/tuner/1.0/IFrontend.hal
@@ -20,15 +20,16 @@
 import ILnb;
 
 /**
- * A Tuner Frontend is used to tune to a frequency and lock signal. It provide
- * live data feed to Tuner Demux interface.
+ * A Tuner Frontend is used to tune to a frequency and lock signal.
+ *
+ * IFrontend provides a bit stream to the Tuner Demux interface.
  */
 interface IFrontend {
     /**
-     * Set the callback
+     * Set the frontend callback.
      *
-     * It is used by the client to receive events from the Frontend.
-     * Only one callback for one Frontend instance is supported. The callback
+     * IFrontendCallback is used by the client to receive events from the Frontend.
+     * Only one callback per IFrontend instance is supported. The callback
      * will be replaced if it's set again.
      *
      * @param callback Callback object to pass Frontend events to the system.
@@ -42,14 +43,14 @@
     setCallback(IFrontendCallback callback) generates (Result result);
 
     /**
-     * Tuning Frontend
+     * Tunes the frontend to using the settings given.
      *
-     * It is used by the client to lock a frequency by providing signal
-     * delivery information. If previous tuning isn't completed, this call must
-     * stop previous tuning, and start a new tuning. Tune is a async call.
-     * LOCKED or NO_SIGNAL eventi is sent back to caller through callback.
+     * This locks the frontend to a frequency by providing signal
+     * delivery information. If previous tuning isn't completed, this call MUST
+     * stop previous tuning, and start a new tuning.
+     * Tune is an async call, with LOCKED or NO_SIGNAL events sent via callback.
      *
-     * @param settings Signal delivery information which frontend can use to
+     * @param settings Signal delivery information the frontend uses to
      * search and lock the signal.
      *
      * @return result Result status of the operation.
@@ -60,9 +61,10 @@
     tune(FrontendSettings settings) generates (Result result);
 
     /**
-     * Stop the tuning
+     * Stops a previous tuning.
      *
-     * It is used by the client to stop a previous tuning.
+     * If the method completes successfully the frontend is no longer tuned and no data
+     * will be sent to attached demuxes.
      *
      * @return result Result status of the operation.
      *         SUCCESS if successfully stop tuning.
@@ -71,10 +73,10 @@
     stopTune() generates (Result result);
 
     /**
-     * Release the Frontend instance
+     * Releases the Frontend instance
      *
-     * It is used by the client to release the frontend instance. HAL clear
-     * underneath resource. client mustn't access the instance any more.
+     * Associated resources are released.  close may be called more than once.
+     * Calls to any other method after this will return an error
      *
      * @return result Result status of the operation.
      *         SUCCESS if successful,
@@ -148,7 +150,7 @@
     setLnb(LnbId lnbId) generates (Result result);
 
     /**
-     * Enble or Disable Low Noise Amplifier (LNA).
+     * Enable or Disable Low Noise Amplifier (LNA).
      *
      * @param bEnable true if activate LNA module; false if deactivate LNA
      *
diff --git a/tv/tuner/1.0/default/service.cpp b/tv/tuner/1.0/default/service.cpp
index 581d269..7bbc09e 100644
--- a/tv/tuner/1.0/default/service.cpp
+++ b/tv/tuner/1.0/default/service.cpp
@@ -21,7 +21,6 @@
 #define LOG_TAG "android.hardware.tv.tuner@1.0-service"
 #endif
 
-#include <binder/ProcessState.h>
 #include <hidl/HidlTransportSupport.h>
 #include <hidl/LegacySupport.h>
 
@@ -46,8 +45,8 @@
     android::sp<ITuner> service = new Tuner();
     android::status_t status;
     if (kLazyService) {
-        auto serviceRegistrar = std::make_shared<LazyServiceRegistrar>();
-        status = serviceRegistrar->registerService(service);
+        auto serviceRegistrar = LazyServiceRegistrar::getInstance();
+        status = serviceRegistrar.registerService(service);
     } else {
         status = service->registerAsService();
     }
diff --git a/tv/tuner/1.0/types.hal b/tv/tuner/1.0/types.hal
index a0cf0d9..fa00a6e 100644
--- a/tv/tuner/1.0/types.hal
+++ b/tv/tuner/1.0/types.hal
@@ -63,7 +63,7 @@
     DVBS,
     /**
      * Digital Video Broadcasting - Terrestrial
-     * DVB Terresttrial Frontend Standard ETSI EN 300 468 V1.15.1 and
+     * DVB Terrestrial Frontend Standard ETSI EN 300 468 V1.15.1 and
      * ETSI EN 302 755 V1.4.1.
      */
     DVBT,
@@ -255,7 +255,7 @@
 };
 
 /**
- *  Signal Setting for ATSC Frontend.
+ *  Signal Settings for an ATSC Frontend.
  */
 struct FrontendAtscSettings {
     /**
@@ -868,7 +868,7 @@
 };
 
 /**
- *  Modulaltion Type for ISDBS.
+ *  Modulation Type for ISDBS.
  */
 @export
 enum FrontendIsdbsModulation : uint32_t {
diff --git a/tv/tuner/README.md b/tv/tuner/README.md
new file mode 100644
index 0000000..aa1f62d
--- /dev/null
+++ b/tv/tuner/README.md
@@ -0,0 +1,12 @@
+# Tuner HALs
+
+## Overview
+
+TV specific tuners.
+
+See 1.0/ITuner.hal for an overview.
+
+*** note
+**Warning:** The HALs are not (yet) frozen, as the HAL definition is
+expected to evolve between Android releases.
+***
diff --git a/wifi/1.0/vts/functional/Android.bp b/wifi/1.0/vts/functional/Android.bp
index 95bb59c..f3068f2 100644
--- a/wifi/1.0/vts/functional/Android.bp
+++ b/wifi/1.0/vts/functional/Android.bp
@@ -39,7 +39,6 @@
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: [
         "VtsHalWifiV1_0TargetTest.cpp",
-        "wifi_ap_iface_hidl_test.cpp",
         "wifi_chip_hidl_test.cpp",
         "wifi_p2p_iface_hidl_test.cpp",
         "wifi_rtt_controller_hidl_test.cpp",
@@ -56,11 +55,14 @@
     test_suites: ["general-tests"],
 }
 
+// These tests are split out so that they can be conditioned on presence of the
+// "android.hardware.wifi.aware" feature.
 cc_test {
     name: "VtsHalWifiNanV1_0TargetTest",
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: [
         "VtsHalWifiV1_0TargetTest.cpp",
+        "wifi_chip_hidl_nan_test.cpp",
         "wifi_nan_iface_hidl_test.cpp",
     ],
     static_libs: [
@@ -70,3 +72,21 @@
     ],
     test_suites: ["general-tests"],
 }
+
+// These tests are split out so that they can be conditioned on presence of
+// the hostapd HAL, which indicates SoftAP support.
+cc_test {
+    name: "VtsHalWifiApV1_0TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: [
+        "VtsHalWifiV1_0TargetTest.cpp",
+        "wifi_ap_iface_hidl_test.cpp",
+        "wifi_chip_hidl_ap_test.cpp",
+    ],
+    static_libs: [
+        "VtsHalWifiV1_0TargetTestUtil",
+        "android.hardware.wifi@1.0",
+        "libwifi-system-iface"
+    ],
+    test_suites: ["general-tests"],
+}
diff --git a/wifi/1.0/vts/functional/VtsHalWifiV1_0TargetTest.cpp b/wifi/1.0/vts/functional/VtsHalWifiV1_0TargetTest.cpp
index e7b8593..9d25014 100644
--- a/wifi/1.0/vts/functional/VtsHalWifiV1_0TargetTest.cpp
+++ b/wifi/1.0/vts/functional/VtsHalWifiV1_0TargetTest.cpp
@@ -41,10 +41,7 @@
     ::testing::AddGlobalTestEnvironment(gEnv);
     ::testing::InitGoogleTest(&argc, argv);
     gEnv->init(&argc, argv);
-    int status = gEnv->initFromOptions(argc, argv);
-    if (status == 0) {
-        status = RUN_ALL_TESTS();
-        LOG(INFO) << "Test result = " << status;
-    }
+    int status = RUN_ALL_TESTS();
+    LOG(INFO) << "Test result = " << status;
     return status;
 }
diff --git a/wifi/1.0/vts/functional/wifi_ap_iface_hidl_test.cpp b/wifi/1.0/vts/functional/wifi_ap_iface_hidl_test.cpp
index e5762f2..c55221d 100644
--- a/wifi/1.0/vts/functional/wifi_ap_iface_hidl_test.cpp
+++ b/wifi/1.0/vts/functional/wifi_ap_iface_hidl_test.cpp
@@ -29,21 +29,17 @@
 using ::android::hardware::wifi::V1_0::WifiStatusCode;
 using ::android::sp;
 
-extern WifiHidlEnvironment* gEnv;
-
 /**
  * Fixture to use for all AP Iface HIDL interface tests.
  */
 class WifiApIfaceHidlTest : public ::testing::VtsHalHidlTargetTestBase {
    public:
     virtual void SetUp() override {
-        if (!gEnv->isSoftApOn) return;
         wifi_ap_iface_ = getWifiApIface();
         ASSERT_NE(nullptr, wifi_ap_iface_.get());
     }
 
     virtual void TearDown() override {
-        if (!gEnv->isSoftApOn) return;
         stopWifi();
     }
 
@@ -57,7 +53,6 @@
  * successfully created.
  */
 TEST(WifiApIfaceHidlTestNoFixture, Create) {
-    if (!gEnv->isSoftApOn) return;
     EXPECT_NE(nullptr, getWifiApIface().get());
     stopWifi();
 }
@@ -67,7 +62,6 @@
  * Ensures that the correct interface type is returned for AP interface.
  */
 TEST_F(WifiApIfaceHidlTest, GetType) {
-    if (!gEnv->isSoftApOn) return;
     const auto& status_and_type = HIDL_INVOKE(wifi_ap_iface_, getType);
     EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_type.first.code);
     EXPECT_EQ(IfaceType::AP, status_and_type.second);
@@ -79,7 +73,6 @@
  * status code.
  */
 TEST_F(WifiApIfaceHidlTest, SetCountryCode) {
-    if (!gEnv->isSoftApOn) return;
     const android::hardware::hidl_array<int8_t, 2> kCountryCode{
         std::array<int8_t, 2>{{0x55, 0x53}}};
     EXPECT_EQ(WifiStatusCode::SUCCESS,
@@ -91,7 +84,6 @@
  * Ensures that we can retrieve valid frequencies for 2.4 GHz band.
  */
 TEST_F(WifiApIfaceHidlTest, GetValidFrequenciesForBand) {
-    if (!gEnv->isSoftApOn) return;
     const auto& status_and_freqs = HIDL_INVOKE(
         wifi_ap_iface_, getValidFrequenciesForBand, WifiBand::BAND_24GHZ);
     EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_freqs.first.code);
diff --git a/wifi/1.0/vts/functional/wifi_chip_hidl_ap_test.cpp b/wifi/1.0/vts/functional/wifi_chip_hidl_ap_test.cpp
new file mode 100644
index 0000000..232ffdd
--- /dev/null
+++ b/wifi/1.0/vts/functional/wifi_chip_hidl_ap_test.cpp
@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include <android/hardware/wifi/1.0/IWifiChip.h>
+
+#include <VtsHalHidlTargetTestBase.h>
+
+#include "wifi_hidl_call_util.h"
+#include "wifi_hidl_test_utils.h"
+
+using ::android::sp;
+using ::android::hardware::wifi::V1_0::ChipModeId;
+using ::android::hardware::wifi::V1_0::IfaceType;
+using ::android::hardware::wifi::V1_0::IWifiApIface;
+using ::android::hardware::wifi::V1_0::IWifiChip;
+using ::android::hardware::wifi::V1_0::IWifiIface;
+using ::android::hardware::wifi::V1_0::WifiStatus;
+using ::android::hardware::wifi::V1_0::WifiStatusCode;
+
+/**
+ * Fixture for IWifiChip tests that are conditioned on SoftAP support.
+ */
+class WifiChipHidlApTest : public ::testing::VtsHalHidlTargetTestBase {
+   public:
+    virtual void SetUp() override {
+        wifi_chip_ = getWifiChip();
+        ASSERT_NE(nullptr, wifi_chip_.get());
+    }
+
+    virtual void TearDown() override { stopWifi(); }
+
+   protected:
+    // Helper function to configure the Chip in one of the supported modes.
+    // Most of the non-mode-configuration-related methods require chip
+    // to be first configured.
+    ChipModeId configureChipForIfaceType(IfaceType type, bool expectSuccess) {
+        ChipModeId mode_id;
+        EXPECT_EQ(expectSuccess,
+                  configureChipToSupportIfaceType(wifi_chip_, type, &mode_id));
+        return mode_id;
+    }
+
+    std::string getIfaceName(const sp<IWifiIface>& iface) {
+        const auto& status_and_name = HIDL_INVOKE(iface, getName);
+        EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_name.first.code);
+        return status_and_name.second;
+    }
+
+    WifiStatusCode createApIface(sp<IWifiApIface>* ap_iface) {
+        const auto& status_and_iface = HIDL_INVOKE(wifi_chip_, createApIface);
+        *ap_iface = status_and_iface.second;
+        return status_and_iface.first.code;
+    }
+
+    WifiStatusCode removeApIface(const std::string& name) {
+        return HIDL_INVOKE(wifi_chip_, removeApIface, name).code;
+    }
+
+    sp<IWifiChip> wifi_chip_;
+};
+
+/*
+ * CreateApIface
+ * Configures the chip in AP mode and ensures that at least 1 iface creation
+ * succeeds.
+ */
+TEST_F(WifiChipHidlApTest, CreateApIface) {
+    configureChipForIfaceType(IfaceType::AP, true);
+
+    sp<IWifiApIface> iface;
+    EXPECT_EQ(WifiStatusCode::SUCCESS, createApIface(&iface));
+    EXPECT_NE(nullptr, iface.get());
+}
+
+/*
+ * GetApIfaceNames
+ * Configures the chip in AP mode and ensures that the iface list is empty
+ * before creating the iface. Then, create the iface and ensure that
+ * iface name is returned via the list.
+ */
+TEST_F(WifiChipHidlApTest, GetApIfaceNames) {
+    configureChipForIfaceType(IfaceType::AP, true);
+
+    const auto& status_and_iface_names1 =
+        HIDL_INVOKE(wifi_chip_, getApIfaceNames);
+    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names1.first.code);
+    EXPECT_EQ(0u, status_and_iface_names1.second.size());
+
+    sp<IWifiApIface> iface;
+    EXPECT_EQ(WifiStatusCode::SUCCESS, createApIface(&iface));
+    EXPECT_NE(nullptr, iface.get());
+
+    std::string iface_name = getIfaceName(iface);
+    const auto& status_and_iface_names2 =
+        HIDL_INVOKE(wifi_chip_, getApIfaceNames);
+    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names2.first.code);
+    EXPECT_EQ(1u, status_and_iface_names2.second.size());
+    EXPECT_EQ(iface_name, status_and_iface_names2.second[0]);
+
+    EXPECT_EQ(WifiStatusCode::SUCCESS, removeApIface(iface_name));
+    const auto& status_and_iface_names3 =
+        HIDL_INVOKE(wifi_chip_, getApIfaceNames);
+    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names3.first.code);
+    EXPECT_EQ(0u, status_and_iface_names3.second.size());
+}
+
+/*
+ * GetApIface
+ * Configures the chip in AP mode and create an iface. Then, retrieve
+ * the iface object using the correct name and ensure any other name
+ * doesn't retrieve an iface object.
+ */
+TEST_F(WifiChipHidlApTest, GetApIface) {
+    configureChipForIfaceType(IfaceType::AP, true);
+
+    sp<IWifiApIface> ap_iface;
+    EXPECT_EQ(WifiStatusCode::SUCCESS, createApIface(&ap_iface));
+    EXPECT_NE(nullptr, ap_iface.get());
+
+    std::string iface_name = getIfaceName(ap_iface);
+    const auto& status_and_iface1 =
+        HIDL_INVOKE(wifi_chip_, getApIface, iface_name);
+    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface1.first.code);
+    EXPECT_NE(nullptr, status_and_iface1.second.get());
+
+    std::string invalid_name = iface_name + "0";
+    const auto& status_and_iface2 =
+        HIDL_INVOKE(wifi_chip_, getApIface, invalid_name);
+    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, status_and_iface2.first.code);
+    EXPECT_EQ(nullptr, status_and_iface2.second.get());
+}
+
+/*
+ * RemoveApIface
+ * Configures the chip in AP mode and create an iface. Then, remove
+ * the iface object using the correct name and ensure any other name
+ * doesn't remove the iface.
+ */
+TEST_F(WifiChipHidlApTest, RemoveApIface) {
+    configureChipForIfaceType(IfaceType::AP, true);
+
+    sp<IWifiApIface> ap_iface;
+    EXPECT_EQ(WifiStatusCode::SUCCESS, createApIface(&ap_iface));
+    EXPECT_NE(nullptr, ap_iface.get());
+
+    std::string iface_name = getIfaceName(ap_iface);
+    std::string invalid_name = iface_name + "0";
+    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, removeApIface(invalid_name));
+    EXPECT_EQ(WifiStatusCode::SUCCESS, removeApIface(iface_name));
+
+    // No such iface exists now. So, this should return failure.
+    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, removeApIface(iface_name));
+}
diff --git a/wifi/1.0/vts/functional/wifi_chip_hidl_nan_test.cpp b/wifi/1.0/vts/functional/wifi_chip_hidl_nan_test.cpp
new file mode 100644
index 0000000..595f23a
--- /dev/null
+++ b/wifi/1.0/vts/functional/wifi_chip_hidl_nan_test.cpp
@@ -0,0 +1,169 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include <android/hardware/wifi/1.0/IWifiChip.h>
+
+#include <VtsHalHidlTargetTestBase.h>
+
+#include "wifi_hidl_call_util.h"
+#include "wifi_hidl_test_utils.h"
+
+using ::android::sp;
+using ::android::hardware::wifi::V1_0::ChipModeId;
+using ::android::hardware::wifi::V1_0::IfaceType;
+using ::android::hardware::wifi::V1_0::IWifiChip;
+using ::android::hardware::wifi::V1_0::IWifiIface;
+using ::android::hardware::wifi::V1_0::IWifiNanIface;
+using ::android::hardware::wifi::V1_0::WifiStatus;
+using ::android::hardware::wifi::V1_0::WifiStatusCode;
+
+/**
+ * Fixture for IWifiChip tests that are conditioned on NAN support.
+ */
+class WifiChipHidlNanTest : public ::testing::VtsHalHidlTargetTestBase {
+   public:
+    virtual void SetUp() override {
+        wifi_chip_ = getWifiChip();
+        ASSERT_NE(nullptr, wifi_chip_.get());
+    }
+
+    virtual void TearDown() override { stopWifi(); }
+
+   protected:
+    // Helper function to configure the Chip in one of the supported modes.
+    // Most of the non-mode-configuration-related methods require chip
+    // to be first configured.
+    ChipModeId configureChipForIfaceType(IfaceType type, bool expectSuccess) {
+        ChipModeId mode_id;
+        EXPECT_EQ(expectSuccess,
+                  configureChipToSupportIfaceType(wifi_chip_, type, &mode_id));
+        return mode_id;
+    }
+
+    std::string getIfaceName(const sp<IWifiIface>& iface) {
+        const auto& status_and_name = HIDL_INVOKE(iface, getName);
+        EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_name.first.code);
+        return status_and_name.second;
+    }
+
+    WifiStatusCode createNanIface(sp<IWifiNanIface>* nan_iface) {
+        const auto& status_and_iface = HIDL_INVOKE(wifi_chip_, createNanIface);
+        *nan_iface = status_and_iface.second;
+        return status_and_iface.first.code;
+    }
+
+    WifiStatusCode removeNanIface(const std::string& name) {
+        return HIDL_INVOKE(wifi_chip_, removeNanIface, name).code;
+    }
+
+    sp<IWifiChip> wifi_chip_;
+};
+
+/*
+ * CreateNanIface
+ * Configures the chip in NAN mode and ensures that at least 1 iface creation
+ * succeeds.
+ */
+TEST_F(WifiChipHidlNanTest, CreateNanIface) {
+    configureChipForIfaceType(IfaceType::NAN, true);
+
+    sp<IWifiNanIface> iface;
+    ASSERT_EQ(WifiStatusCode::SUCCESS, createNanIface(&iface));
+    EXPECT_NE(nullptr, iface.get());
+}
+
+/*
+ * GetNanIfaceNames
+ * Configures the chip in NAN mode and ensures that the iface list is empty
+ * before creating the iface. Then, create the iface and ensure that
+ * iface name is returned via the list.
+ */
+TEST_F(WifiChipHidlNanTest, GetNanIfaceNames) {
+    configureChipForIfaceType(IfaceType::NAN, true);
+
+    const auto& status_and_iface_names1 =
+        HIDL_INVOKE(wifi_chip_, getNanIfaceNames);
+    ASSERT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names1.first.code);
+    EXPECT_EQ(0u, status_and_iface_names1.second.size());
+
+    sp<IWifiNanIface> iface;
+    EXPECT_EQ(WifiStatusCode::SUCCESS, createNanIface(&iface));
+    EXPECT_NE(nullptr, iface.get());
+
+    std::string iface_name = getIfaceName(iface);
+    const auto& status_and_iface_names2 =
+        HIDL_INVOKE(wifi_chip_, getNanIfaceNames);
+    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names2.first.code);
+    EXPECT_EQ(1u, status_and_iface_names2.second.size());
+    EXPECT_EQ(iface_name, status_and_iface_names2.second[0]);
+
+    EXPECT_EQ(WifiStatusCode::SUCCESS, removeNanIface(iface_name));
+    const auto& status_and_iface_names3 =
+        HIDL_INVOKE(wifi_chip_, getNanIfaceNames);
+    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names3.first.code);
+    EXPECT_EQ(0u, status_and_iface_names3.second.size());
+}
+
+/*
+ * GetNanIface
+ * Configures the chip in NAN mode and create an iface. Then, retrieve
+ * the iface object using the correct name and ensure any other name
+ * doesn't retrieve an iface object.
+ */
+TEST_F(WifiChipHidlNanTest, GetNanIface) {
+    configureChipForIfaceType(IfaceType::NAN, true);
+
+    sp<IWifiNanIface> nan_iface;
+    EXPECT_EQ(WifiStatusCode::SUCCESS, createNanIface(&nan_iface));
+    EXPECT_NE(nullptr, nan_iface.get());
+
+    std::string iface_name = getIfaceName(nan_iface);
+    const auto& status_and_iface1 =
+        HIDL_INVOKE(wifi_chip_, getNanIface, iface_name);
+    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface1.first.code);
+    EXPECT_NE(nullptr, status_and_iface1.second.get());
+
+    std::string invalid_name = iface_name + "0";
+    const auto& status_and_iface2 =
+        HIDL_INVOKE(wifi_chip_, getNanIface, invalid_name);
+    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, status_and_iface2.first.code);
+    EXPECT_EQ(nullptr, status_and_iface2.second.get());
+}
+
+/*
+ * RemoveNanIface
+ * Configures the chip in NAN mode and create an iface. Then, remove
+ * the iface object using the correct name and ensure any other name
+ * doesn't remove the iface.
+ */
+TEST_F(WifiChipHidlNanTest, RemoveNanIface) {
+    configureChipForIfaceType(IfaceType::NAN, true);
+
+    sp<IWifiNanIface> nan_iface;
+    EXPECT_EQ(WifiStatusCode::SUCCESS, createNanIface(&nan_iface));
+    EXPECT_NE(nullptr, nan_iface.get());
+
+    std::string iface_name = getIfaceName(nan_iface);
+    std::string invalid_name = iface_name + "0";
+    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, removeNanIface(invalid_name));
+
+    EXPECT_EQ(WifiStatusCode::SUCCESS, removeNanIface(iface_name));
+
+    // No such iface exists now. So, this should return failure.
+    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, removeNanIface(iface_name));
+}
diff --git a/wifi/1.0/vts/functional/wifi_chip_hidl_test.cpp b/wifi/1.0/vts/functional/wifi_chip_hidl_test.cpp
index 1b7e821..2601b78 100644
--- a/wifi/1.0/vts/functional/wifi_chip_hidl_test.cpp
+++ b/wifi/1.0/vts/functional/wifi_chip_hidl_test.cpp
@@ -36,9 +36,7 @@
 using ::android::hardware::wifi::V1_0::WifiStatus;
 using ::android::hardware::wifi::V1_0::WifiStatusCode;
 using ::android::hardware::wifi::V1_0::IWifiChip;
-using ::android::hardware::wifi::V1_0::IWifiApIface;
 using ::android::hardware::wifi::V1_0::IWifiIface;
-using ::android::hardware::wifi::V1_0::IWifiNanIface;
 using ::android::hardware::wifi::V1_0::IWifiP2pIface;
 using ::android::hardware::wifi::V1_0::IWifiRttController;
 using ::android::hardware::wifi::V1_0::IWifiStaIface;
@@ -64,7 +62,10 @@
 }  // namespace
 
 /**
- * Fixture to use for all Wifi chip HIDL interface tests.
+ * Fixture for IWifiChip tests.
+ *
+ * Tests that require SoftAP or NAN support should go into WifiChipHidlApTest or
+ * WifiChipHidlNanTest respectively.
  */
 class WifiChipHidlTest : public ::testing::VtsHalHidlTargetTestBase {
    public:
@@ -114,26 +115,6 @@
         return status_and_name.second;
     }
 
-    WifiStatusCode createApIface(sp<IWifiApIface>* ap_iface) {
-        const auto& status_and_iface = HIDL_INVOKE(wifi_chip_, createApIface);
-        *ap_iface = status_and_iface.second;
-        return status_and_iface.first.code;
-    }
-
-    WifiStatusCode removeApIface(const std::string& name) {
-        return HIDL_INVOKE(wifi_chip_, removeApIface, name).code;
-    }
-
-    WifiStatusCode createNanIface(sp<IWifiNanIface>* nan_iface) {
-        const auto& status_and_iface = HIDL_INVOKE(wifi_chip_, createNanIface);
-        *nan_iface = status_and_iface.second;
-        return status_and_iface.first.code;
-    }
-
-    WifiStatusCode removeNanIface(const std::string& name) {
-        return HIDL_INVOKE(wifi_chip_, removeNanIface, name).code;
-    }
-
     WifiStatusCode createP2pIface(sp<IWifiP2pIface>* p2p_iface) {
         const auto& status_and_iface = HIDL_INVOKE(wifi_chip_, createP2pIface);
         *p2p_iface = status_and_iface.second;
@@ -360,201 +341,6 @@
 }
 
 /*
- * CreateApIface
- * Configures the chip in AP mode and ensures that at least 1 iface creation
- * succeeds.
- */
-TEST_F(WifiChipHidlTest, CreateApIface) {
-    if (!gEnv->isSoftApOn) return;
-    configureChipForIfaceType(IfaceType::AP, true);
-
-    sp<IWifiApIface> iface;
-    EXPECT_EQ(WifiStatusCode::SUCCESS, createApIface(&iface));
-    EXPECT_NE(nullptr, iface.get());
-}
-
-/*
- * GetApIfaceNames
- * Configures the chip in AP mode and ensures that the iface list is empty
- * before creating the iface. Then, create the iface and ensure that
- * iface name is returned via the list.
- */
-TEST_F(WifiChipHidlTest, GetApIfaceNames) {
-    if (!gEnv->isSoftApOn) return;
-    configureChipForIfaceType(IfaceType::AP, true);
-
-    const auto& status_and_iface_names1 =
-        HIDL_INVOKE(wifi_chip_, getApIfaceNames);
-    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names1.first.code);
-    EXPECT_EQ(0u, status_and_iface_names1.second.size());
-
-    sp<IWifiApIface> iface;
-    EXPECT_EQ(WifiStatusCode::SUCCESS, createApIface(&iface));
-    EXPECT_NE(nullptr, iface.get());
-
-    std::string iface_name = getIfaceName(iface);
-    const auto& status_and_iface_names2 =
-        HIDL_INVOKE(wifi_chip_, getApIfaceNames);
-    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names2.first.code);
-    EXPECT_EQ(1u, status_and_iface_names2.second.size());
-    EXPECT_EQ(iface_name, status_and_iface_names2.second[0]);
-
-    EXPECT_EQ(WifiStatusCode::SUCCESS, removeApIface(iface_name));
-    const auto& status_and_iface_names3 =
-        HIDL_INVOKE(wifi_chip_, getApIfaceNames);
-    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names3.first.code);
-    EXPECT_EQ(0u, status_and_iface_names3.second.size());
-}
-
-/*
- * GetApIface
- * Configures the chip in AP mode and create an iface. Then, retrieve
- * the iface object using the correct name and ensure any other name
- * doesn't retrieve an iface object.
- */
-TEST_F(WifiChipHidlTest, GetApIface) {
-    if (!gEnv->isSoftApOn) return;
-    configureChipForIfaceType(IfaceType::AP, true);
-
-    sp<IWifiApIface> ap_iface;
-    EXPECT_EQ(WifiStatusCode::SUCCESS, createApIface(&ap_iface));
-    EXPECT_NE(nullptr, ap_iface.get());
-
-    std::string iface_name = getIfaceName(ap_iface);
-    const auto& status_and_iface1 =
-        HIDL_INVOKE(wifi_chip_, getApIface, iface_name);
-    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface1.first.code);
-    EXPECT_NE(nullptr, status_and_iface1.second.get());
-
-    std::string invalid_name = iface_name + "0";
-    const auto& status_and_iface2 =
-        HIDL_INVOKE(wifi_chip_, getApIface, invalid_name);
-    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, status_and_iface2.first.code);
-    EXPECT_EQ(nullptr, status_and_iface2.second.get());
-}
-
-/*
- * RemoveApIface
- * Configures the chip in AP mode and create an iface. Then, remove
- * the iface object using the correct name and ensure any other name
- * doesn't remove the iface.
- */
-TEST_F(WifiChipHidlTest, RemoveApIface) {
-    if (!gEnv->isSoftApOn) return;
-    configureChipForIfaceType(IfaceType::AP, true);
-
-    sp<IWifiApIface> ap_iface;
-    EXPECT_EQ(WifiStatusCode::SUCCESS, createApIface(&ap_iface));
-    EXPECT_NE(nullptr, ap_iface.get());
-
-    std::string iface_name = getIfaceName(ap_iface);
-    std::string invalid_name = iface_name + "0";
-    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, removeApIface(invalid_name));
-    EXPECT_EQ(WifiStatusCode::SUCCESS, removeApIface(iface_name));
-
-    // No such iface exists now. So, this should return failure.
-    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, removeApIface(iface_name));
-}
-
-/*
- * CreateNanIface
- * Configures the chip in NAN mode and ensures that at least 1 iface creation
- * succeeds.
- */
-TEST_F(WifiChipHidlTest, CreateNanIface) {
-    if (!gEnv->isNanOn) return;
-    configureChipForIfaceType(IfaceType::NAN, gEnv->isNanOn);
-
-    sp<IWifiNanIface> iface;
-    ASSERT_EQ(WifiStatusCode::SUCCESS, createNanIface(&iface));
-    EXPECT_NE(nullptr, iface.get());
-}
-
-/*
- * GetNanIfaceNames
- * Configures the chip in NAN mode and ensures that the iface list is empty
- * before creating the iface. Then, create the iface and ensure that
- * iface name is returned via the list.
- */
-TEST_F(WifiChipHidlTest, GetNanIfaceNames) {
-    if (!gEnv->isNanOn) return;
-    configureChipForIfaceType(IfaceType::NAN, gEnv->isNanOn);
-
-    const auto& status_and_iface_names1 =
-        HIDL_INVOKE(wifi_chip_, getNanIfaceNames);
-    ASSERT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names1.first.code);
-    EXPECT_EQ(0u, status_and_iface_names1.second.size());
-
-    sp<IWifiNanIface> iface;
-    EXPECT_EQ(WifiStatusCode::SUCCESS, createNanIface(&iface));
-    EXPECT_NE(nullptr, iface.get());
-
-    std::string iface_name = getIfaceName(iface);
-    const auto& status_and_iface_names2 =
-        HIDL_INVOKE(wifi_chip_, getNanIfaceNames);
-    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names2.first.code);
-    EXPECT_EQ(1u, status_and_iface_names2.second.size());
-    EXPECT_EQ(iface_name, status_and_iface_names2.second[0]);
-
-    EXPECT_EQ(WifiStatusCode::SUCCESS, removeNanIface(iface_name));
-    const auto& status_and_iface_names3 =
-        HIDL_INVOKE(wifi_chip_, getNanIfaceNames);
-    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names3.first.code);
-    EXPECT_EQ(0u, status_and_iface_names3.second.size());
-}
-
-/*
- * GetNanIface
- * Configures the chip in NAN mode and create an iface. Then, retrieve
- * the iface object using the correct name and ensure any other name
- * doesn't retrieve an iface object.
- */
-TEST_F(WifiChipHidlTest, GetNanIface) {
-    if (!gEnv->isNanOn) return;
-    configureChipForIfaceType(IfaceType::NAN, gEnv->isNanOn);
-
-    sp<IWifiNanIface> nan_iface;
-    EXPECT_EQ(WifiStatusCode::SUCCESS, createNanIface(&nan_iface));
-    EXPECT_NE(nullptr, nan_iface.get());
-
-    std::string iface_name = getIfaceName(nan_iface);
-    const auto& status_and_iface1 =
-        HIDL_INVOKE(wifi_chip_, getNanIface, iface_name);
-    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface1.first.code);
-    EXPECT_NE(nullptr, status_and_iface1.second.get());
-
-    std::string invalid_name = iface_name + "0";
-    const auto& status_and_iface2 =
-        HIDL_INVOKE(wifi_chip_, getNanIface, invalid_name);
-    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, status_and_iface2.first.code);
-    EXPECT_EQ(nullptr, status_and_iface2.second.get());
-}
-
-/*
- * RemoveNanIface
- * Configures the chip in NAN mode and create an iface. Then, remove
- * the iface object using the correct name and ensure any other name
- * doesn't remove the iface.
- */
-TEST_F(WifiChipHidlTest, RemoveNanIface) {
-    if (!gEnv->isNanOn) return;
-    configureChipForIfaceType(IfaceType::NAN, gEnv->isNanOn);
-
-    sp<IWifiNanIface> nan_iface;
-    EXPECT_EQ(WifiStatusCode::SUCCESS, createNanIface(&nan_iface));
-    EXPECT_NE(nullptr, nan_iface.get());
-
-    std::string iface_name = getIfaceName(nan_iface);
-    std::string invalid_name = iface_name + "0";
-    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, removeNanIface(invalid_name));
-
-    EXPECT_EQ(WifiStatusCode::SUCCESS, removeNanIface(iface_name));
-
-    // No such iface exists now. So, this should return failure.
-    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, removeNanIface(iface_name));
-}
-
-/*
  * CreateP2pIface
  * Configures the chip in P2P mode and ensures that at least 1 iface creation
  * succeeds.
diff --git a/wifi/1.0/vts/functional/wifi_hidl_test_utils.h b/wifi/1.0/vts/functional/wifi_hidl_test_utils.h
index 529b142..bdee2ec 100644
--- a/wifi/1.0/vts/functional/wifi_hidl_test_utils.h
+++ b/wifi/1.0/vts/functional/wifi_hidl_test_utils.h
@@ -61,48 +61,4 @@
         stopWifi();
         sleep(5);
     }
-
-   public:
-    // Whether NaN feature is supported on the device.
-    bool isNanOn = false;
-    // Whether SoftAp feature is supported on the device.
-    bool isSoftApOn = false;
-
-    void usage(char* me, char* arg) {
-        fprintf(stderr,
-                "unrecognized option: %s\n\n"
-                "usage: %s <gtest options> <test options>\n\n"
-                "test options are:\n\n"
-                "-N, --nan_on: Whether NAN feature is supported\n"
-                "-S, --softap_on: Whether SOFTAP feature is supported\n",
-                arg, me);
-    }
-
-    int initFromOptions(int argc, char** argv) {
-        static struct option options[] = {{"nan_on", no_argument, 0, 'N'},
-                                          {"softap_on", no_argument, 0, 'S'},
-                                          {0, 0, 0, 0}};
-
-        int c;
-        while ((c = getopt_long(argc, argv, "NS", options, NULL)) >= 0) {
-            switch (c) {
-                case 'N':
-                    isNanOn = true;
-                    break;
-                case 'S':
-                    isSoftApOn = true;
-                    break;
-                default:
-                    usage(argv[0], argv[optind]);
-                    return 2;
-            }
-        }
-
-        if (optind < argc) {
-            usage(argv[0], argv[optind]);
-            return 2;
-        }
-
-        return 0;
-    }
 };
diff --git a/wifi/1.1/vts/functional/VtsHalWifiV1_1TargetTest.cpp b/wifi/1.1/vts/functional/VtsHalWifiV1_1TargetTest.cpp
index a0f97f8..673fed3 100644
--- a/wifi/1.1/vts/functional/VtsHalWifiV1_1TargetTest.cpp
+++ b/wifi/1.1/vts/functional/VtsHalWifiV1_1TargetTest.cpp
@@ -41,10 +41,7 @@
     ::testing::AddGlobalTestEnvironment(gEnv);
     ::testing::InitGoogleTest(&argc, argv);
     gEnv->init(&argc, argv);
-    int status = gEnv->initFromOptions(argc, argv);
-    if (status == 0) {
-        int status = RUN_ALL_TESTS();
-        LOG(INFO) << "Test result = " << status;
-    }
+    int status = RUN_ALL_TESTS();
+    LOG(INFO) << "Test result = " << status;
     return status;
 }
diff --git a/wifi/1.3/default/tests/wifi_ap_iface_unit_tests.cpp b/wifi/1.3/default/tests/wifi_ap_iface_unit_tests.cpp
deleted file mode 100644
index 680f534..0000000
--- a/wifi/1.3/default/tests/wifi_ap_iface_unit_tests.cpp
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * Copyright (C) 2019, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <cutils/properties.h>
-#include <gmock/gmock.h>
-
-#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
-#include "wifi_ap_iface.h"
-
-#include "mock_interface_tool.h"
-#include "mock_wifi_feature_flags.h"
-#include "mock_wifi_iface_util.h"
-#include "mock_wifi_legacy_hal.h"
-
-using testing::NiceMock;
-using testing::Return;
-using testing::Test;
-
-namespace {
-constexpr char kIfaceName[] = "mockWlan0";
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-
-class WifiApIfaceTest : public Test {
-   protected:
-    std::shared_ptr<NiceMock<wifi_system::MockInterfaceTool>> iface_tool_{
-        new NiceMock<wifi_system::MockInterfaceTool>};
-    std::shared_ptr<NiceMock<legacy_hal::MockWifiLegacyHal>> legacy_hal_{
-        new NiceMock<legacy_hal::MockWifiLegacyHal>(iface_tool_)};
-    std::shared_ptr<NiceMock<iface_util::MockWifiIfaceUtil>> iface_util_{
-        new NiceMock<iface_util::MockWifiIfaceUtil>(iface_tool_)};
-    std::shared_ptr<NiceMock<feature_flags::MockWifiFeatureFlags>>
-        feature_flags_{new NiceMock<feature_flags::MockWifiFeatureFlags>};
-};
-
-TEST_F(WifiApIfaceTest, SetRandomMacAddressIfFeatureEnabled) {
-    EXPECT_CALL(*feature_flags_, isApMacRandomizationDisabled())
-        .WillOnce(testing::Return(false));
-    EXPECT_CALL(*iface_util_, getOrCreateRandomMacAddress())
-        .WillOnce(testing::Return(std::array<uint8_t, 6>{0, 0, 0, 0, 0, 0}));
-    EXPECT_CALL(*iface_util_, setMacAddress(testing::_, testing::_))
-        .WillOnce(testing::Return(true));
-    sp<WifiApIface> ap_iface =
-        new WifiApIface(kIfaceName, legacy_hal_, iface_util_, feature_flags_);
-}
-
-TEST_F(WifiApIfaceTest, DontSetRandomMacAddressIfFeatureDisabled) {
-    EXPECT_CALL(*feature_flags_, isApMacRandomizationDisabled())
-        .WillOnce(testing::Return(true));
-    EXPECT_CALL(*iface_util_, getOrCreateRandomMacAddress()).Times(0);
-    EXPECT_CALL(*iface_util_, setMacAddress(testing::_, testing::_)).Times(0);
-    sp<WifiApIface> ap_iface =
-        new WifiApIface(kIfaceName, legacy_hal_, iface_util_, feature_flags_);
-}
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/vts/functional/wifi_sta_iface_hidl_test.cpp b/wifi/1.3/vts/functional/wifi_sta_iface_hidl_test.cpp
index 71e90ac..d382f30 100644
--- a/wifi/1.3/vts/functional/wifi_sta_iface_hidl_test.cpp
+++ b/wifi/1.3/vts/functional/wifi_sta_iface_hidl_test.cpp
@@ -27,6 +27,8 @@
 #include "wifi_hidl_test_utils.h"
 
 using ::android::sp;
+using ::android::hardware::hidl_array;
+using ::android::hardware::wifi::V1_0::WifiStatus;
 using ::android::hardware::wifi::V1_0::WifiStatusCode;
 using ::android::hardware::wifi::V1_3::IWifiStaIface;
 
@@ -59,14 +61,11 @@
  * and return a success status code.
  */
 TEST_F(WifiStaIfaceHidlTest, GetFactoryMacAddress) {
-    const auto& status_and_mac =
+    std::pair<WifiStatus, hidl_array<uint8_t, 6> > status_and_mac =
         HIDL_INVOKE(wifi_sta_iface_, getFactoryMacAddress);
     EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_mac.first.code);
-    const int num_elements = sizeof(status_and_mac.second) / sizeof(uint8_t);
-    EXPECT_EQ(6, num_elements);
-    for (int i = 0; i < num_elements; i++) {
-        EXPECT_NE(0, status_and_mac.second[i]);
-    }
+    hidl_array<uint8_t, 6> all_zero{};
+    EXPECT_NE(all_zero, status_and_mac.second);
 }
 
 /*
diff --git a/wifi/1.4/Android.bp b/wifi/1.4/Android.bp
new file mode 100644
index 0000000..5750e42
--- /dev/null
+++ b/wifi/1.4/Android.bp
@@ -0,0 +1,26 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.wifi@1.4",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IWifi.hal",
+        "IWifiApIface.hal",
+        "IWifiChip.hal",
+        "IWifiRttController.hal",
+        "IWifiRttControllerEventCallback.hal",
+        "IWifiStaIface.hal",
+    ],
+    interfaces: [
+        "android.hardware.wifi@1.0",
+        "android.hardware.wifi@1.1",
+        "android.hardware.wifi@1.2",
+        "android.hardware.wifi@1.3",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
diff --git a/wifi/1.4/IWifi.hal b/wifi/1.4/IWifi.hal
new file mode 100644
index 0000000..765e09d
--- /dev/null
+++ b/wifi/1.4/IWifi.hal
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi@1.4;
+
+import @1.3::IWifi;
+
+/**
+ * This is the root of the HAL module and is the interface returned when
+ * loading an implementation of the Wi-Fi HAL. There must be at most one
+ * module loaded in the system.
+ * IWifi.getChip() must return @1.2::IWifiChip
+ */
+interface IWifi extends @1.3::IWifi {};
diff --git a/wifi/1.4/IWifiApIface.hal b/wifi/1.4/IWifiApIface.hal
new file mode 100644
index 0000000..80c576d
--- /dev/null
+++ b/wifi/1.4/IWifiApIface.hal
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi@1.4;
+
+import @1.0::IWifiApIface;
+import @1.0::MacAddress;
+import @1.0::WifiStatus;
+
+/**
+ * Represents a network interface in AP mode.
+ *
+ * This can be obtained through @1.0::IWifiChip.getApIface() and casting
+ * IWifiApIface up to 1.4.
+ */
+interface IWifiApIface extends @1.0::IWifiApIface {
+    /**
+     * Changes the MAC address of the interface to the given MAC address.
+     *
+     * @param mac MAC address to change to.
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_IFACE_INVALID|,
+     *         |WifiStatusCode.ERROR_UNKNOWN|
+     */
+    setMacAddress(MacAddress mac) generates (WifiStatus status);
+
+    /**
+     * Gets the factory MAC address of the interface.
+     *
+     * @return status WifiStatus of the operation
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_IFACE_INVALID|,
+     *         |WifiStatusCode.ERROR_UNKNOWN|
+     * @return mac factory MAC address of the interface
+     */
+    getFactoryMacAddress() generates (WifiStatus status, MacAddress mac);
+};
diff --git a/wifi/1.4/IWifiChip.hal b/wifi/1.4/IWifiChip.hal
new file mode 100644
index 0000000..d269427
--- /dev/null
+++ b/wifi/1.4/IWifiChip.hal
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi@1.4;
+
+import @1.0::WifiStatus;
+import @1.0::IWifiIface;
+import @1.3::IWifiChip;
+import IWifiRttController;
+
+/**
+ * Interface that represents a chip that must be configured as a single unit.
+ */
+interface IWifiChip extends @1.3::IWifiChip {
+    /**
+     * Create a RTTController instance.
+     *
+     * RTT controller can be either:
+     * a) Bound to a specific iface by passing in the corresponding |IWifiIface|
+     * object in |iface| param, OR
+     * b) Let the implementation decide the iface to use for RTT operations by
+     * passing null in |iface| param.
+     *
+     * @param boundIface HIDL interface object representing the iface if
+     *        the responder must be bound to a specific iface, null otherwise.
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_CHIP_INVALID|
+     */
+    createRttController_1_4(IWifiIface boundIface)
+        generates (WifiStatus status, IWifiRttController rtt);
+};
diff --git a/wifi/1.4/IWifiRttController.hal b/wifi/1.4/IWifiRttController.hal
new file mode 100644
index 0000000..5c71975
--- /dev/null
+++ b/wifi/1.4/IWifiRttController.hal
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi@1.4;
+
+import @1.0::IWifiRttController;
+import @1.0::CommandId;
+import @1.0::WifiChannelInfo;
+import @1.0::WifiStatus;
+import IWifiRttControllerEventCallback;
+
+/**
+ * Interface used to perform RTT(Round trip time) operations.
+ */
+interface IWifiRttController extends @1.0::IWifiRttController {
+    /**
+     * Requests notifications of significant events on this rtt controller.
+     * Multiple calls to this must register multiple callbacks each of which must
+     * receive all events.
+     *
+     * @param callback An instance of the |IWifiRttControllerEventCallback| HIDL
+     *        interface object.
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_IFACE_INVALID|
+     */
+    registerEventCallback_1_4(IWifiRttControllerEventCallback callback)
+        generates (WifiStatus status);
+
+    /**
+     * API to request RTT measurement.
+     *
+     * @param cmdId command Id to use for this invocation.
+     * @param rttConfigs Vector of |RttConfig| parameters.
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_RTT_CONTROLLER_INVALID|,
+     *         |WifiStatusCode.ERROR_INVALID_ARGS|,
+     *         |WifiStatusCode.ERROR_NOT_AVAILABLE|,
+     *         |WifiStatusCode.ERROR_UNKNOWN|
+     */
+    rangeRequest_1_4(CommandId cmdId, vec<RttConfig> rttConfigs) generates (WifiStatus status);
+
+    /**
+     * RTT capabilities of the device.
+     *
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_RTT_CONTROLLER_INVALID|,
+     *         |WifiStatusCode.ERROR_UNKNOWN|
+     * @return capabilities Instance of |RttCapabilities|.
+     */
+    getCapabilities_1_4() generates (WifiStatus status, RttCapabilities capabilities);
+
+    /**
+     * Get RTT responder information e.g. WiFi channel to enable responder on.
+     *
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_RTT_CONTROLLER_INVALID|,
+     *         |WifiStatusCode.ERROR_NOT_AVAILABLE|,
+     *         |WifiStatusCode.ERROR_UNKNOWN|
+     * @return info Instance of |RttResponderInfo|.
+     */
+    getResponderInfo_1_4() generates (WifiStatus status, RttResponder info);
+
+    /**
+     * Enable RTT responder mode.
+     *
+     * @param cmdId command Id to use for this invocation.
+     * @parm channelHint Hint of the channel information where RTT responder must
+     *       be enabled on.
+     * @param maxDurationInSeconds Timeout of responder mode.
+     * @param info Instance of |RttResponderInfo|.
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_RTT_CONTROLLER_INVALID|,
+     *         |WifiStatusCode.ERROR_INVALID_ARGS|,
+     *         |WifiStatusCode.ERROR_NOT_AVAILABLE|,
+     *         |WifiStatusCode.ERROR_UNKNOWN|
+     */
+    enableResponder_1_4(CommandId cmdId, WifiChannelInfo channelHint,
+        uint32_t maxDurationInSeconds, RttResponder info) generates (WifiStatus status);
+};
diff --git a/wifi/1.4/IWifiRttControllerEventCallback.hal b/wifi/1.4/IWifiRttControllerEventCallback.hal
new file mode 100644
index 0000000..75de3d4
--- /dev/null
+++ b/wifi/1.4/IWifiRttControllerEventCallback.hal
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi@1.4;
+
+import @1.0::IWifiRttControllerEventCallback;
+import @1.0::CommandId;
+
+/**
+ * RTT Response and Event Callbacks.
+ */
+interface IWifiRttControllerEventCallback extends @1.0::IWifiRttControllerEventCallback {
+    /*
+     * Invoked when an RTT result is available.
+     *
+     * @param cmdId command Id corresponding to the original request.
+     * @param results Vector of |RttResult| instances.
+     */
+    oneway onResults_1_4(CommandId cmdId, vec<RttResult> results);
+};
diff --git a/wifi/1.4/IWifiStaIface.hal b/wifi/1.4/IWifiStaIface.hal
new file mode 100644
index 0000000..fb658cd
--- /dev/null
+++ b/wifi/1.4/IWifiStaIface.hal
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi@1.4;
+
+import @1.0::WifiStatus;
+import @1.0::MacAddress;
+import @1.0::IWifiStaIface;
+import @1.3::IWifiStaIface;
+
+/**
+ * Interface used to represent a single STA iface.
+ *
+ * IWifiChip.createStaIface() may return a @1.4::IWifiStaIface when supported.
+ */
+interface IWifiStaIface extends @1.3::IWifiStaIface {
+
+    enum StaIfaceCapabilityMask : @1.0::IWifiStaIface.StaIfaceCapabilityMask {
+        STA_6G = 1 << 15
+    };
+
+  /**
+   * Get the capabilities supported by this STA iface.
+   *
+   * @return status WifiStatus of the operation.
+   *         Possible status codes:
+   *         |WifiStatusCode.SUCCESS|,
+   *         |WifiStatusCode.ERROR_WIFI_IFACE_INVALID|,
+   *         |WifiStatusCode.ERROR_NOT_AVAILABLE|,
+   *         |WifiStatusCode.ERROR_NOT_SUPPORTED|,
+   *         |WifiStatusCode.ERROR_UNKNOWN|
+   * @return capabilities Bitset of |StaIfaceCapabilityMask| values.
+   */
+  getCapabilities_1_4()
+      generates (WifiStatus status,
+                 bitfield<StaIfaceCapabilityMask> capabilities);
+};
diff --git a/wifi/1.3/default/Android.mk b/wifi/1.4/default/Android.mk
similarity index 92%
rename from wifi/1.3/default/Android.mk
rename to wifi/1.4/default/Android.mk
index 29f1c42..ab76ff6 100644
--- a/wifi/1.3/default/Android.mk
+++ b/wifi/1.4/default/Android.mk
@@ -67,7 +67,8 @@
     android.hardware.wifi@1.0 \
     android.hardware.wifi@1.1 \
     android.hardware.wifi@1.2 \
-    android.hardware.wifi@1.3
+    android.hardware.wifi@1.3 \
+    android.hardware.wifi@1.4
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
 include $(BUILD_STATIC_LIBRARY)
 
@@ -76,6 +77,7 @@
 ###
 include $(CLEAR_VARS)
 LOCAL_MODULE := android.hardware.wifi@1.0-service
+LOCAL_VINTF_FRAGMENTS := android.hardware.wifi@1.0-service.xml
 LOCAL_MODULE_RELATIVE_PATH := hw
 LOCAL_PROPRIETARY_MODULE := true
 LOCAL_CPPFLAGS := -Wall -Werror -Wextra
@@ -93,7 +95,8 @@
     android.hardware.wifi@1.0 \
     android.hardware.wifi@1.1 \
     android.hardware.wifi@1.2 \
-    android.hardware.wifi@1.3
+    android.hardware.wifi@1.3 \
+    android.hardware.wifi@1.4
 LOCAL_STATIC_LIBRARIES := \
     android.hardware.wifi@1.0-service-lib
 LOCAL_INIT_RC := android.hardware.wifi@1.0-service.rc
@@ -104,6 +107,7 @@
 ###
 include $(CLEAR_VARS)
 LOCAL_MODULE := android.hardware.wifi@1.0-service-lazy
+LOCAL_VINTF_FRAGMENTS := android.hardware.wifi@1.0-service.xml
 LOCAL_OVERRIDES_MODULES := android.hardware.wifi@1.0-service
 LOCAL_CFLAGS := -DLAZY_SERVICE
 LOCAL_MODULE_RELATIVE_PATH := hw
@@ -123,7 +127,8 @@
     android.hardware.wifi@1.0 \
     android.hardware.wifi@1.1 \
     android.hardware.wifi@1.2 \
-    android.hardware.wifi@1.3
+    android.hardware.wifi@1.3 \
+    android.hardware.wifi@1.4
 LOCAL_STATIC_LIBRARIES := \
     android.hardware.wifi@1.0-service-lib
 LOCAL_INIT_RC := android.hardware.wifi@1.0-service-lazy.rc
@@ -145,7 +150,6 @@
     tests/mock_wifi_legacy_hal.cpp \
     tests/mock_wifi_mode_controller.cpp \
     tests/ringbuffer_unit_tests.cpp \
-    tests/wifi_ap_iface_unit_tests.cpp \
     tests/wifi_nan_iface_unit_tests.cpp \
     tests/wifi_chip_unit_tests.cpp \
     tests/wifi_iface_util_unit_tests.cpp
@@ -165,5 +169,6 @@
     android.hardware.wifi@1.0 \
     android.hardware.wifi@1.1 \
     android.hardware.wifi@1.2 \
-    android.hardware.wifi@1.3
+    android.hardware.wifi@1.3 \
+    android.hardware.wifi@1.4
 include $(BUILD_NATIVE_TEST)
diff --git a/wifi/1.3/default/OWNERS b/wifi/1.4/default/OWNERS
similarity index 100%
rename from wifi/1.3/default/OWNERS
rename to wifi/1.4/default/OWNERS
diff --git a/wifi/1.3/default/THREADING.README b/wifi/1.4/default/THREADING.README
similarity index 100%
rename from wifi/1.3/default/THREADING.README
rename to wifi/1.4/default/THREADING.README
diff --git a/wifi/1.3/default/android.hardware.wifi@1.0-service-lazy.rc b/wifi/1.4/default/android.hardware.wifi@1.0-service-lazy.rc
similarity index 100%
rename from wifi/1.3/default/android.hardware.wifi@1.0-service-lazy.rc
rename to wifi/1.4/default/android.hardware.wifi@1.0-service-lazy.rc
diff --git a/wifi/1.3/default/android.hardware.wifi@1.0-service.rc b/wifi/1.4/default/android.hardware.wifi@1.0-service.rc
similarity index 100%
rename from wifi/1.3/default/android.hardware.wifi@1.0-service.rc
rename to wifi/1.4/default/android.hardware.wifi@1.0-service.rc
diff --git a/wifi/1.4/default/android.hardware.wifi@1.0-service.xml b/wifi/1.4/default/android.hardware.wifi@1.0-service.xml
new file mode 100644
index 0000000..b5d25cd
--- /dev/null
+++ b/wifi/1.4/default/android.hardware.wifi@1.0-service.xml
@@ -0,0 +1,11 @@
+<manifest version="1.0" type="device">
+    <hal format="hidl">
+        <name>android.hardware.wifi</name>
+        <transport>hwbinder</transport>
+        <version>1.4</version>
+        <interface>
+            <name>IWifi</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>
diff --git a/wifi/1.3/default/hidl_callback_util.h b/wifi/1.4/default/hidl_callback_util.h
similarity index 98%
rename from wifi/1.3/default/hidl_callback_util.h
rename to wifi/1.4/default/hidl_callback_util.h
index a44af79..fc601b8 100644
--- a/wifi/1.3/default/hidl_callback_util.h
+++ b/wifi/1.4/default/hidl_callback_util.h
@@ -52,7 +52,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace hidl_callback_util {
 template <typename CallbackType>
@@ -117,7 +117,7 @@
 
 }  // namespace hidl_callback_util
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/hidl_return_util.h b/wifi/1.4/default/hidl_return_util.h
similarity index 98%
rename from wifi/1.3/default/hidl_return_util.h
rename to wifi/1.4/default/hidl_return_util.h
index 9707444..99c7092 100644
--- a/wifi/1.3/default/hidl_return_util.h
+++ b/wifi/1.4/default/hidl_return_util.h
@@ -23,7 +23,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace hidl_return_util {
 using namespace android::hardware::wifi::V1_0;
@@ -113,7 +113,7 @@
 
 }  // namespace hidl_return_util
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/hidl_struct_util.cpp b/wifi/1.4/default/hidl_struct_util.cpp
similarity index 98%
rename from wifi/1.3/default/hidl_struct_util.cpp
rename to wifi/1.4/default/hidl_struct_util.cpp
index 2e4db70..13a09f3 100644
--- a/wifi/1.3/default/hidl_struct_util.cpp
+++ b/wifi/1.4/default/hidl_struct_util.cpp
@@ -22,7 +22,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace hidl_struct_util {
 
@@ -91,7 +91,7 @@
 }
 
 IWifiStaIface::StaIfaceCapabilityMask
-convertLegacyFeatureToHidlStaIfaceCapability(uint32_t feature) {
+convertLegacyFeatureToHidlStaIfaceCapability(uint64_t feature) {
     using HidlStaIfaceCaps = IWifiStaIface::StaIfaceCapabilityMask;
     switch (feature) {
         case WIFI_FEATURE_GSCAN:
@@ -120,6 +120,8 @@
             return HidlStaIfaceCaps::ND_OFFLOAD;
         case WIFI_FEATURE_MKEEP_ALIVE:
             return HidlStaIfaceCaps::KEEP_ALIVE;
+        case WIFI_FEATURE_INFRA_6G:
+            return HidlStaIfaceCaps::STA_6G;
     };
     CHECK(false) << "Unknown legacy feature: " << feature;
     return {};
@@ -302,11 +304,11 @@
 }
 
 legacy_hal::wifi_latency_mode convertHidlLatencyModeToLegacy(
-    IWifiChip::LatencyMode hidl_latency_mode) {
+    V1_3::IWifiChip::LatencyMode hidl_latency_mode) {
     switch (hidl_latency_mode) {
-        case IWifiChip::LatencyMode::NORMAL:
+        case V1_3::IWifiChip::LatencyMode::NORMAL:
             return legacy_hal::WIFI_LATENCY_MODE_NORMAL;
-        case IWifiChip::LatencyMode::LOW:
+        case V1_3::IWifiChip::LatencyMode::LOW:
             return legacy_hal::WIFI_LATENCY_MODE_LOW;
     }
     CHECK(false);
@@ -365,7 +367,7 @@
 }
 
 bool convertLegacyFeaturesToHidlStaCapabilities(
-    uint32_t legacy_feature_set, uint32_t legacy_logger_feature_set,
+    uint64_t legacy_feature_set, uint32_t legacy_logger_feature_set,
     uint32_t* hidl_caps) {
     if (!hidl_caps) {
         return false;
@@ -384,7 +386,8 @@
           WIFI_FEATURE_IE_WHITELIST, WIFI_FEATURE_SCAN_RAND,
           WIFI_FEATURE_INFRA_5G, WIFI_FEATURE_HOTSPOT, WIFI_FEATURE_PNO,
           WIFI_FEATURE_TDLS, WIFI_FEATURE_TDLS_OFFCHANNEL,
-          WIFI_FEATURE_CONFIG_NDO, WIFI_FEATURE_MKEEP_ALIVE}) {
+          WIFI_FEATURE_CONFIG_NDO, WIFI_FEATURE_MKEEP_ALIVE,
+          WIFI_FEATURE_INFRA_6G}) {
         if (feature & legacy_feature_set) {
             *hidl_caps |= convertLegacyFeatureToHidlStaIfaceCapability(feature);
         }
@@ -2279,6 +2282,8 @@
             return legacy_hal::WIFI_RTT_PREAMBLE_HT;
         case RttPreamble::VHT:
             return legacy_hal::WIFI_RTT_PREAMBLE_VHT;
+        case RttPreamble::HE:
+            return legacy_hal::WIFI_RTT_PREAMBLE_HE;
     };
     CHECK(false);
 }
@@ -2291,6 +2296,8 @@
             return RttPreamble::HT;
         case legacy_hal::WIFI_RTT_PREAMBLE_VHT:
             return RttPreamble::VHT;
+        case legacy_hal::WIFI_RTT_PREAMBLE_HE:
+            return RttPreamble::HE;
     };
     CHECK(false) << "Unknown legacy type: " << type;
 }
@@ -2354,6 +2361,8 @@
             return WifiRatePreamble::HT;
         case 3:
             return WifiRatePreamble::VHT;
+        case 4:
+            return WifiRatePreamble::HE;
         default:
             return WifiRatePreamble::RESERVED;
     };
@@ -2579,9 +2588,10 @@
     hidl_capabilities->responderSupported =
         legacy_capabilities.responder_supported;
     hidl_capabilities->preambleSupport = 0;
-    for (const auto flag : {legacy_hal::WIFI_RTT_PREAMBLE_LEGACY,
-                            legacy_hal::WIFI_RTT_PREAMBLE_HT,
-                            legacy_hal::WIFI_RTT_PREAMBLE_VHT}) {
+    for (const auto flag :
+         {legacy_hal::WIFI_RTT_PREAMBLE_LEGACY,
+          legacy_hal::WIFI_RTT_PREAMBLE_HT, legacy_hal::WIFI_RTT_PREAMBLE_VHT,
+          legacy_hal::WIFI_RTT_PREAMBLE_HE}) {
         if (legacy_capabilities.preamble_support & flag) {
             hidl_capabilities->preambleSupport |=
                 static_cast<std::underlying_type<RttPreamble>::type>(
@@ -2683,7 +2693,7 @@
 }
 }  // namespace hidl_struct_util
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/hidl_struct_util.h b/wifi/1.4/default/hidl_struct_util.h
similarity index 97%
rename from wifi/1.3/default/hidl_struct_util.h
rename to wifi/1.4/default/hidl_struct_util.h
index 3eefd95..cfaa4ad 100644
--- a/wifi/1.3/default/hidl_struct_util.h
+++ b/wifi/1.4/default/hidl_struct_util.h
@@ -25,6 +25,8 @@
 #include <android/hardware/wifi/1.2/types.h>
 #include <android/hardware/wifi/1.3/IWifiChip.h>
 #include <android/hardware/wifi/1.3/types.h>
+#include <android/hardware/wifi/1.4/IWifiStaIface.h>
+#include <android/hardware/wifi/1.4/types.h>
 
 #include "wifi_legacy_hal.h"
 
@@ -37,7 +39,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace hidl_struct_util {
 using namespace android::hardware::wifi::V1_0;
@@ -68,7 +70,7 @@
 
 // STA iface conversion methods.
 bool convertLegacyFeaturesToHidlStaCapabilities(
-    uint32_t legacy_feature_set, uint32_t legacy_logger_feature_set,
+    uint64_t legacy_feature_set, uint32_t legacy_logger_feature_set,
     uint32_t* hidl_caps);
 bool convertLegacyApfCapabilitiesToHidl(
     const legacy_hal::PacketFilterCapabilities& legacy_caps,
@@ -188,7 +190,7 @@
     std::vector<RttResult>* hidl_results);
 }  // namespace hidl_struct_util
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/hidl_sync_util.cpp b/wifi/1.4/default/hidl_sync_util.cpp
similarity index 96%
rename from wifi/1.3/default/hidl_sync_util.cpp
rename to wifi/1.4/default/hidl_sync_util.cpp
index 160727f..593a3bc 100644
--- a/wifi/1.3/default/hidl_sync_util.cpp
+++ b/wifi/1.4/default/hidl_sync_util.cpp
@@ -23,7 +23,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace hidl_sync_util {
 
@@ -33,7 +33,7 @@
 
 }  // namespace hidl_sync_util
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/hidl_sync_util.h b/wifi/1.4/default/hidl_sync_util.h
similarity index 96%
rename from wifi/1.3/default/hidl_sync_util.h
rename to wifi/1.4/default/hidl_sync_util.h
index ebfb051..0244421 100644
--- a/wifi/1.3/default/hidl_sync_util.h
+++ b/wifi/1.4/default/hidl_sync_util.h
@@ -24,13 +24,13 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace hidl_sync_util {
 std::unique_lock<std::recursive_mutex> acquireGlobalLock();
 }  // namespace hidl_sync_util
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/ringbuffer.cpp b/wifi/1.4/default/ringbuffer.cpp
similarity index 97%
rename from wifi/1.3/default/ringbuffer.cpp
rename to wifi/1.4/default/ringbuffer.cpp
index 1294c52..0fe8ef4 100644
--- a/wifi/1.3/default/ringbuffer.cpp
+++ b/wifi/1.4/default/ringbuffer.cpp
@@ -21,7 +21,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 
 Ringbuffer::Ringbuffer(size_t maxSize) : size_(0), maxSize_(maxSize) {}
@@ -48,7 +48,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/ringbuffer.h b/wifi/1.4/default/ringbuffer.h
similarity index 97%
rename from wifi/1.3/default/ringbuffer.h
rename to wifi/1.4/default/ringbuffer.h
index d9f8df6..ddce648 100644
--- a/wifi/1.3/default/ringbuffer.h
+++ b/wifi/1.4/default/ringbuffer.h
@@ -23,7 +23,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 
 /**
@@ -45,7 +45,7 @@
 };
 
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/service.cpp b/wifi/1.4/default/service.cpp
similarity index 85%
rename from wifi/1.3/default/service.cpp
rename to wifi/1.4/default/service.cpp
index 0b41d28..3f7f609 100644
--- a/wifi/1.3/default/service.cpp
+++ b/wifi/1.4/default/service.cpp
@@ -28,11 +28,11 @@
 using android::hardware::configureRpcThreadpool;
 using android::hardware::joinRpcThreadpool;
 using android::hardware::LazyServiceRegistrar;
-using android::hardware::wifi::V1_3::implementation::feature_flags::
+using android::hardware::wifi::V1_4::implementation::feature_flags::
     WifiFeatureFlags;
-using android::hardware::wifi::V1_3::implementation::iface_util::WifiIfaceUtil;
-using android::hardware::wifi::V1_3::implementation::legacy_hal::WifiLegacyHal;
-using android::hardware::wifi::V1_3::implementation::mode_controller::
+using android::hardware::wifi::V1_4::implementation::iface_util::WifiIfaceUtil;
+using android::hardware::wifi::V1_4::implementation::legacy_hal::WifiLegacyHal;
+using android::hardware::wifi::V1_4::implementation::mode_controller::
     WifiModeController;
 
 #ifdef LAZY_SERVICE
@@ -51,8 +51,8 @@
     const auto iface_tool =
         std::make_shared<android::wifi_system::InterfaceTool>();
     // Setup hwbinder service
-    android::sp<android::hardware::wifi::V1_3::IWifi> service =
-        new android::hardware::wifi::V1_3::implementation::Wifi(
+    android::sp<android::hardware::wifi::V1_4::IWifi> service =
+        new android::hardware::wifi::V1_4::implementation::Wifi(
             iface_tool, std::make_shared<WifiLegacyHal>(iface_tool),
             std::make_shared<WifiModeController>(),
             std::make_shared<WifiIfaceUtil>(iface_tool),
diff --git a/wifi/1.3/default/tests/hidl_struct_util_unit_tests.cpp b/wifi/1.4/default/tests/hidl_struct_util_unit_tests.cpp
similarity index 98%
rename from wifi/1.3/default/tests/hidl_struct_util_unit_tests.cpp
rename to wifi/1.4/default/tests/hidl_struct_util_unit_tests.cpp
index 4e9ebde..14a1504 100644
--- a/wifi/1.3/default/tests/hidl_struct_util_unit_tests.cpp
+++ b/wifi/1.4/default/tests/hidl_struct_util_unit_tests.cpp
@@ -34,7 +34,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 using namespace android::hardware::wifi::V1_0;
 using ::android::hardware::wifi::V1_0::WifiChannelWidthInMhz;
@@ -277,9 +277,9 @@
     uint32_t hidle_caps;
 
     uint32_t legacy_feature_set =
-            WIFI_FEATURE_D2D_RTT | WIFI_FEATURE_SET_LATENCY_MODE;
+        WIFI_FEATURE_D2D_RTT | WIFI_FEATURE_SET_LATENCY_MODE;
     uint32_t legacy_logger_feature_set =
-            legacy_hal::WIFI_LOGGER_DRIVER_DUMP_SUPPORTED;
+        legacy_hal::WIFI_LOGGER_DRIVER_DUMP_SUPPORTED;
 
     ASSERT_TRUE(hidl_struct_util::convertLegacyFeaturesToHidlChipCapabilities(
         legacy_feature_set, legacy_logger_feature_set, &hidle_caps));
@@ -292,7 +292,7 @@
               hidle_caps);
 }
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/tests/main.cpp b/wifi/1.4/default/tests/main.cpp
similarity index 100%
rename from wifi/1.3/default/tests/main.cpp
rename to wifi/1.4/default/tests/main.cpp
diff --git a/wifi/1.3/default/tests/mock_interface_tool.cpp b/wifi/1.4/default/tests/mock_interface_tool.cpp
similarity index 100%
rename from wifi/1.3/default/tests/mock_interface_tool.cpp
rename to wifi/1.4/default/tests/mock_interface_tool.cpp
diff --git a/wifi/1.3/default/tests/mock_interface_tool.h b/wifi/1.4/default/tests/mock_interface_tool.h
similarity index 100%
rename from wifi/1.3/default/tests/mock_interface_tool.h
rename to wifi/1.4/default/tests/mock_interface_tool.h
diff --git a/wifi/1.3/default/tests/mock_wifi_feature_flags.cpp b/wifi/1.4/default/tests/mock_wifi_feature_flags.cpp
similarity index 96%
rename from wifi/1.3/default/tests/mock_wifi_feature_flags.cpp
rename to wifi/1.4/default/tests/mock_wifi_feature_flags.cpp
index a393fdc..b1fa432 100644
--- a/wifi/1.3/default/tests/mock_wifi_feature_flags.cpp
+++ b/wifi/1.4/default/tests/mock_wifi_feature_flags.cpp
@@ -21,7 +21,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace feature_flags {
 
@@ -29,7 +29,7 @@
 
 }  // namespace feature_flags
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/tests/mock_wifi_feature_flags.h b/wifi/1.4/default/tests/mock_wifi_feature_flags.h
similarity index 96%
rename from wifi/1.3/default/tests/mock_wifi_feature_flags.h
rename to wifi/1.4/default/tests/mock_wifi_feature_flags.h
index ee12b54..72d2304 100644
--- a/wifi/1.3/default/tests/mock_wifi_feature_flags.h
+++ b/wifi/1.4/default/tests/mock_wifi_feature_flags.h
@@ -25,7 +25,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace feature_flags {
 
@@ -39,7 +39,7 @@
 
 }  // namespace feature_flags
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/tests/mock_wifi_iface_util.cpp b/wifi/1.4/default/tests/mock_wifi_iface_util.cpp
similarity index 96%
rename from wifi/1.3/default/tests/mock_wifi_iface_util.cpp
rename to wifi/1.4/default/tests/mock_wifi_iface_util.cpp
index 3d877c0..0968569 100644
--- a/wifi/1.3/default/tests/mock_wifi_iface_util.cpp
+++ b/wifi/1.4/default/tests/mock_wifi_iface_util.cpp
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace iface_util {
 
@@ -33,7 +33,7 @@
     : WifiIfaceUtil(iface_tool) {}
 }  // namespace iface_util
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/tests/mock_wifi_iface_util.h b/wifi/1.4/default/tests/mock_wifi_iface_util.h
similarity index 97%
rename from wifi/1.3/default/tests/mock_wifi_iface_util.h
rename to wifi/1.4/default/tests/mock_wifi_iface_util.h
index 8ec93eb..6cc81e4 100644
--- a/wifi/1.3/default/tests/mock_wifi_iface_util.h
+++ b/wifi/1.4/default/tests/mock_wifi_iface_util.h
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace iface_util {
 
@@ -43,7 +43,7 @@
 };
 }  // namespace iface_util
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/tests/mock_wifi_legacy_hal.cpp b/wifi/1.4/default/tests/mock_wifi_legacy_hal.cpp
similarity index 96%
rename from wifi/1.3/default/tests/mock_wifi_legacy_hal.cpp
rename to wifi/1.4/default/tests/mock_wifi_legacy_hal.cpp
index 0a202c4..8d65c59 100644
--- a/wifi/1.3/default/tests/mock_wifi_legacy_hal.cpp
+++ b/wifi/1.4/default/tests/mock_wifi_legacy_hal.cpp
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace legacy_hal {
 
@@ -33,7 +33,7 @@
     : WifiLegacyHal(iface_tool) {}
 }  // namespace legacy_hal
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/tests/mock_wifi_legacy_hal.h b/wifi/1.4/default/tests/mock_wifi_legacy_hal.h
similarity index 92%
rename from wifi/1.3/default/tests/mock_wifi_legacy_hal.h
rename to wifi/1.4/default/tests/mock_wifi_legacy_hal.h
index 81cb1de..6942c1e 100644
--- a/wifi/1.3/default/tests/mock_wifi_legacy_hal.h
+++ b/wifi/1.4/default/tests/mock_wifi_legacy_hal.h
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace legacy_hal {
 
@@ -41,9 +41,9 @@
                  wifi_error(const std::string&,
                             const on_radio_mode_change_callback&));
     MOCK_METHOD1(getFirmwareVersion, std::pair<wifi_error, std::string>(
-                 const std::string& iface_name));
+                                         const std::string& iface_name));
     MOCK_METHOD1(getDriverVersion, std::pair<wifi_error, std::string>(
-                 const std::string& iface_name));
+                                       const std::string& iface_name));
 
     MOCK_METHOD2(selectTxPowerScenario,
                  wifi_error(const std::string& iface_name,
@@ -60,7 +60,7 @@
 };
 }  // namespace legacy_hal
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/tests/mock_wifi_mode_controller.cpp b/wifi/1.4/default/tests/mock_wifi_mode_controller.cpp
similarity index 96%
rename from wifi/1.3/default/tests/mock_wifi_mode_controller.cpp
rename to wifi/1.4/default/tests/mock_wifi_mode_controller.cpp
index 2b0ea36..ee09029 100644
--- a/wifi/1.3/default/tests/mock_wifi_mode_controller.cpp
+++ b/wifi/1.4/default/tests/mock_wifi_mode_controller.cpp
@@ -24,14 +24,14 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace mode_controller {
 
 MockWifiModeController::MockWifiModeController() : WifiModeController() {}
 }  // namespace mode_controller
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/tests/mock_wifi_mode_controller.h b/wifi/1.4/default/tests/mock_wifi_mode_controller.h
similarity index 97%
rename from wifi/1.3/default/tests/mock_wifi_mode_controller.h
rename to wifi/1.4/default/tests/mock_wifi_mode_controller.h
index c204059..1e1ce69 100644
--- a/wifi/1.3/default/tests/mock_wifi_mode_controller.h
+++ b/wifi/1.4/default/tests/mock_wifi_mode_controller.h
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace mode_controller {
 
@@ -38,7 +38,7 @@
 };
 }  // namespace mode_controller
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/tests/ringbuffer_unit_tests.cpp b/wifi/1.4/default/tests/ringbuffer_unit_tests.cpp
similarity index 98%
rename from wifi/1.3/default/tests/ringbuffer_unit_tests.cpp
rename to wifi/1.4/default/tests/ringbuffer_unit_tests.cpp
index 0cf1e4f..a65347f 100644
--- a/wifi/1.3/default/tests/ringbuffer_unit_tests.cpp
+++ b/wifi/1.4/default/tests/ringbuffer_unit_tests.cpp
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 
 class RingbufferTest : public Test {
@@ -91,7 +91,7 @@
     EXPECT_EQ(input, buffer_.getData().front());
 }
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/tests/runtests.sh b/wifi/1.4/default/tests/runtests.sh
similarity index 100%
rename from wifi/1.3/default/tests/runtests.sh
rename to wifi/1.4/default/tests/runtests.sh
diff --git a/wifi/1.3/default/tests/wifi_chip_unit_tests.cpp b/wifi/1.4/default/tests/wifi_chip_unit_tests.cpp
similarity index 98%
rename from wifi/1.3/default/tests/wifi_chip_unit_tests.cpp
rename to wifi/1.4/default/tests/wifi_chip_unit_tests.cpp
index d8ce278..90e81e1 100644
--- a/wifi/1.3/default/tests/wifi_chip_unit_tests.cpp
+++ b/wifi/1.4/default/tests/wifi_chip_unit_tests.cpp
@@ -41,7 +41,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 
 class WifiChipTest : public Test {
@@ -173,8 +173,9 @@
     std::string createIface(const IfaceType& type) {
         std::string iface_name;
         if (type == IfaceType::AP) {
-            chip_->createApIface([&iface_name](const WifiStatus& status,
-                                               const sp<IWifiApIface>& iface) {
+            chip_->createApIface([&iface_name](
+                                     const WifiStatus& status,
+                                     const sp<V1_0::IWifiApIface>& iface) {
                 if (WifiStatusCode::SUCCESS == status.code) {
                     ASSERT_NE(iface.get(), nullptr);
                     iface->getName([&iface_name](const WifiStatus& status,
@@ -251,7 +252,7 @@
 
     bool createRttController() {
         bool success = false;
-        chip_->createRttController(
+        chip_->createRttController_1_4(
             NULL, [&success](const WifiStatus& status,
                              const sp<IWifiRttController>& rtt) {
                 if (WifiStatusCode::SUCCESS == status.code) {
@@ -749,7 +750,7 @@
 
     // Create RTT controller
     sp<IWifiRttController> rtt_controller;
-    chip_->createRttController(
+    chip_->createRttController_1_4(
         NULL, [&rtt_controller](const WifiStatus& status,
                                 const sp<IWifiRttController>& rtt) {
             if (WifiStatusCode::SUCCESS == status.code) {
@@ -865,7 +866,7 @@
     ASSERT_EQ(createIface(IfaceType::STA), "wlan3");
 }
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/tests/wifi_iface_util_unit_tests.cpp b/wifi/1.4/default/tests/wifi_iface_util_unit_tests.cpp
similarity index 98%
rename from wifi/1.3/default/tests/wifi_iface_util_unit_tests.cpp
rename to wifi/1.4/default/tests/wifi_iface_util_unit_tests.cpp
index 28d23ff..03394bc 100644
--- a/wifi/1.3/default/tests/wifi_iface_util_unit_tests.cpp
+++ b/wifi/1.4/default/tests/wifi_iface_util_unit_tests.cpp
@@ -41,7 +41,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace iface_util {
 class WifiIfaceUtilTest : public Test {
@@ -90,7 +90,7 @@
 }
 }  // namespace iface_util
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/tests/wifi_nan_iface_unit_tests.cpp b/wifi/1.4/default/tests/wifi_nan_iface_unit_tests.cpp
similarity index 99%
rename from wifi/1.3/default/tests/wifi_nan_iface_unit_tests.cpp
rename to wifi/1.4/default/tests/wifi_nan_iface_unit_tests.cpp
index eb6c610..8aefa92 100644
--- a/wifi/1.3/default/tests/wifi_nan_iface_unit_tests.cpp
+++ b/wifi/1.4/default/tests/wifi_nan_iface_unit_tests.cpp
@@ -38,7 +38,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 
 bool CaptureIfaceEventHandlers(
@@ -142,7 +142,7 @@
     captured_iface_event_handlers.on_state_toggle_off_on(kIfaceName);
 }
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi.cpp b/wifi/1.4/default/wifi.cpp
similarity index 99%
rename from wifi/1.3/default/wifi.cpp
rename to wifi/1.4/default/wifi.cpp
index 2f21819..4f48d7e 100644
--- a/wifi/1.3/default/wifi.cpp
+++ b/wifi/1.4/default/wifi.cpp
@@ -28,7 +28,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 using hidl_return_util::validateAndCall;
 using hidl_return_util::validateAndCallWithLock;
@@ -210,7 +210,7 @@
     return createWifiStatus(WifiStatusCode::SUCCESS);
 }
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi.h b/wifi/1.4/default/wifi.h
similarity index 96%
rename from wifi/1.3/default/wifi.h
rename to wifi/1.4/default/wifi.h
index 1c2a154..087d6f7 100644
--- a/wifi/1.3/default/wifi.h
+++ b/wifi/1.4/default/wifi.h
@@ -20,7 +20,7 @@
 #include <functional>
 
 #include <android-base/macros.h>
-#include <android/hardware/wifi/1.3/IWifi.h>
+#include <android/hardware/wifi/1.4/IWifi.h>
 #include <utils/Looper.h>
 
 #include "hidl_callback_util.h"
@@ -32,13 +32,13 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 
 /**
  * Root HIDL interface object used to control the Wifi HAL.
  */
-class Wifi : public V1_3::IWifi {
+class Wifi : public V1_4::IWifi {
    public:
     Wifi(const std::shared_ptr<wifi_system::InterfaceTool> iface_tool,
          const std::shared_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
@@ -92,7 +92,7 @@
 };
 
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_ap_iface.cpp b/wifi/1.4/default/wifi_ap_iface.cpp
similarity index 71%
rename from wifi/1.3/default/wifi_ap_iface.cpp
rename to wifi/1.4/default/wifi_ap_iface.cpp
index 9a8681a..e677f19 100644
--- a/wifi/1.3/default/wifi_ap_iface.cpp
+++ b/wifi/1.4/default/wifi_ap_iface.cpp
@@ -24,33 +24,18 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 using hidl_return_util::validateAndCall;
 
 WifiApIface::WifiApIface(
     const std::string& ifname,
     const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-    const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util,
-    const std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags)
+    const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util)
     : ifname_(ifname),
       legacy_hal_(legacy_hal),
       iface_util_(iface_util),
-      feature_flags_(feature_flags),
-      is_valid_(true) {
-    if (feature_flags_.lock()->isApMacRandomizationDisabled()) {
-        LOG(INFO) << "AP MAC randomization disabled";
-        return;
-    }
-    LOG(INFO) << "AP MAC randomization enabled";
-    // Set random MAC address
-    std::array<uint8_t, 6> randomized_mac =
-        iface_util_.lock()->getOrCreateRandomMacAddress();
-    bool status = iface_util_.lock()->setMacAddress(ifname_, randomized_mac);
-    if (!status) {
-        LOG(ERROR) << "Failed to set random mac address";
-    }
-}
+      is_valid_(true) {}
 
 void WifiApIface::invalidate() {
     legacy_hal_.reset();
@@ -85,6 +70,20 @@
                            hidl_status_cb, band);
 }
 
+Return<void> WifiApIface::setMacAddress(const hidl_array<uint8_t, 6>& mac,
+                                        setMacAddress_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiApIface::setMacAddressInternal, hidl_status_cb,
+                           mac);
+}
+
+Return<void> WifiApIface::getFactoryMacAddress(
+    getFactoryMacAddress_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiApIface::getFactoryMacAddressInternal,
+                           hidl_status_cb);
+}
+
 std::pair<WifiStatus, std::string> WifiApIface::getNameInternal() {
     return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
 }
@@ -111,8 +110,28 @@
             ifname_, hidl_struct_util::convertHidlWifiBandToLegacy(band));
     return {createWifiStatusFromLegacyError(legacy_status), valid_frequencies};
 }
+
+WifiStatus WifiApIface::setMacAddressInternal(
+    const std::array<uint8_t, 6>& mac) {
+    bool status = iface_util_.lock()->setMacAddress(ifname_, mac);
+    if (!status) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+std::pair<WifiStatus, std::array<uint8_t, 6>>
+WifiApIface::getFactoryMacAddressInternal() {
+    std::array<uint8_t, 6> mac =
+        iface_util_.lock()->getFactoryMacAddress(ifname_);
+    if (mac[0] == 0 && mac[1] == 0 && mac[2] == 0 && mac[3] == 0 &&
+        mac[4] == 0 && mac[5] == 0) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), mac};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), mac};
+}
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_ap_iface.h b/wifi/1.4/default/wifi_ap_iface.h
similarity index 75%
rename from wifi/1.3/default/wifi_ap_iface.h
rename to wifi/1.4/default/wifi_ap_iface.h
index 98c5c9c..4f3438c 100644
--- a/wifi/1.3/default/wifi_ap_iface.h
+++ b/wifi/1.4/default/wifi_ap_iface.h
@@ -18,29 +18,26 @@
 #define WIFI_AP_IFACE_H_
 
 #include <android-base/macros.h>
-#include <android/hardware/wifi/1.0/IWifiApIface.h>
+#include <android/hardware/wifi/1.4/IWifiApIface.h>
 
-#include "wifi_feature_flags.h"
 #include "wifi_iface_util.h"
 #include "wifi_legacy_hal.h"
 
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 using namespace android::hardware::wifi::V1_0;
 
 /**
  * HIDL interface object used to control a AP Iface instance.
  */
-class WifiApIface : public V1_0::IWifiApIface {
+class WifiApIface : public V1_4::IWifiApIface {
    public:
-    WifiApIface(
-        const std::string& ifname,
-        const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-        const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util,
-        const std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags);
+    WifiApIface(const std::string& ifname,
+                const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+                const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util);
     // Refer to |WifiChip::invalidate()|.
     void invalidate();
     bool isValid();
@@ -53,6 +50,10 @@
                                 setCountryCode_cb hidl_status_cb) override;
     Return<void> getValidFrequenciesForBand(
         WifiBand band, getValidFrequenciesForBand_cb hidl_status_cb) override;
+    Return<void> setMacAddress(const hidl_array<uint8_t, 6>& mac,
+                               setMacAddress_cb hidl_status_cb) override;
+    Return<void> getFactoryMacAddress(
+        getFactoryMacAddress_cb hidl_status_cb) override;
 
    private:
     // Corresponding worker functions for the HIDL methods.
@@ -61,18 +62,20 @@
     WifiStatus setCountryCodeInternal(const std::array<int8_t, 2>& code);
     std::pair<WifiStatus, std::vector<WifiChannelInMhz>>
     getValidFrequenciesForBandInternal(WifiBand band);
+    WifiStatus setMacAddressInternal(const std::array<uint8_t, 6>& mac);
+    std::pair<WifiStatus, std::array<uint8_t, 6>>
+    getFactoryMacAddressInternal();
 
     std::string ifname_;
     std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
     std::weak_ptr<iface_util::WifiIfaceUtil> iface_util_;
-    std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags_;
     bool is_valid_;
 
     DISALLOW_COPY_AND_ASSIGN(WifiApIface);
 };
 
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_chip.cpp b/wifi/1.4/default/wifi_chip.cpp
similarity index 98%
rename from wifi/1.3/default/wifi_chip.cpp
rename to wifi/1.4/default/wifi_chip.cpp
index e9991dc..7685ac6 100644
--- a/wifi/1.3/default/wifi_chip.cpp
+++ b/wifi/1.4/default/wifi_chip.cpp
@@ -307,7 +307,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 using hidl_return_util::validateAndCall;
 using hidl_return_util::validateAndCallWithLock;
@@ -321,7 +321,6 @@
       legacy_hal_(legacy_hal),
       mode_controller_(mode_controller),
       iface_util_(iface_util),
-      feature_flags_(feature_flags),
       is_valid_(true),
       current_mode_id_(feature_flags::chip_mode_ids::kInvalid),
       modes_(feature_flags.lock()->getChipModes()),
@@ -621,6 +620,14 @@
     return Void();
 }
 
+Return<void> WifiChip::createRttController_1_4(
+    const sp<IWifiIface>& bound_iface,
+    createRttController_1_4_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::createRttControllerInternal_1_4,
+                           hidl_status_cb, bound_iface);
+}
+
 void WifiChip::invalidateAndRemoveAllIfaces() {
     invalidateAndClearAll(ap_ifaces_);
     invalidateAndClearAll(nan_ifaces_);
@@ -670,30 +677,6 @@
     return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), 0};
 }
 
-std::pair<WifiStatus, uint32_t> WifiChip::getCapabilitiesInternal_1_3() {
-    legacy_hal::wifi_error legacy_status;
-    uint32_t legacy_feature_set;
-    uint32_t legacy_logger_feature_set;
-    const auto ifname = getFirstActiveWlanIfaceName();
-    std::tie(legacy_status, legacy_feature_set) =
-        legacy_hal_.lock()->getSupportedFeatureSet(ifname);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), 0};
-    }
-    std::tie(legacy_status, legacy_logger_feature_set) =
-        legacy_hal_.lock()->getLoggerSupportedFeatureSet(ifname);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        // some devices don't support querying logger feature set
-        legacy_logger_feature_set = 0;
-    }
-    uint32_t hidl_caps;
-    if (!hidl_struct_util::convertLegacyFeaturesToHidlChipCapabilities(
-            legacy_feature_set, legacy_logger_feature_set, &hidl_caps)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), 0};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
-}
-
 std::pair<WifiStatus, std::vector<IWifiChip::ChipMode>>
 WifiChip::getAvailableModesInternal() {
     return {createWifiStatus(WifiStatusCode::SUCCESS), modes_};
@@ -806,8 +789,7 @@
         return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
     }
     std::string ifname = allocateApIfaceName();
-    sp<WifiApIface> iface =
-        new WifiApIface(ifname, legacy_hal_, iface_util_, feature_flags_);
+    sp<WifiApIface> iface = new WifiApIface(ifname, legacy_hal_, iface_util_);
     ap_ifaces_.push_back(iface);
     for (const auto& callback : event_cb_handler_.getCallbacks()) {
         if (!callback->onIfaceAdded(IfaceType::AP, ifname).isOk()) {
@@ -998,18 +980,10 @@
     return createWifiStatus(WifiStatusCode::SUCCESS);
 }
 
-std::pair<WifiStatus, sp<IWifiRttController>>
-WifiChip::createRttControllerInternal(const sp<IWifiIface>& bound_iface) {
-    if (sta_ifaces_.size() == 0 &&
-        !canCurrentModeSupportIfaceOfType(IfaceType::STA)) {
-        LOG(ERROR) << "createRttControllerInternal: Chip cannot support STAs "
-                      "(and RTT by extension)";
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
-    }
-    sp<WifiRttController> rtt = new WifiRttController(
-        getFirstActiveWlanIfaceName(), bound_iface, legacy_hal_);
-    rtt_controllers_.emplace_back(rtt);
-    return {createWifiStatus(WifiStatusCode::SUCCESS), rtt};
+std::pair<WifiStatus, sp<V1_0::IWifiRttController>>
+WifiChip::createRttControllerInternal(const sp<IWifiIface>& /*bound_iface*/) {
+    LOG(ERROR) << "createRttController is not supported on this HAL";
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
 }
 
 std::pair<WifiStatus, std::vector<WifiDebugRingBufferStatus>>
@@ -1160,6 +1134,45 @@
     return createWifiStatusFromLegacyError(legacy_status);
 }
 
+std::pair<WifiStatus, uint32_t> WifiChip::getCapabilitiesInternal_1_3() {
+    legacy_hal::wifi_error legacy_status;
+    uint32_t legacy_feature_set;
+    uint32_t legacy_logger_feature_set;
+    const auto ifname = getFirstActiveWlanIfaceName();
+    std::tie(legacy_status, legacy_feature_set) =
+        legacy_hal_.lock()->getSupportedFeatureSet(ifname);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), 0};
+    }
+    std::tie(legacy_status, legacy_logger_feature_set) =
+        legacy_hal_.lock()->getLoggerSupportedFeatureSet(ifname);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        // some devices don't support querying logger feature set
+        legacy_logger_feature_set = 0;
+    }
+    uint32_t hidl_caps;
+    if (!hidl_struct_util::convertLegacyFeaturesToHidlChipCapabilities(
+            legacy_feature_set, legacy_logger_feature_set, &hidl_caps)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), 0};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+}
+
+std::pair<WifiStatus, sp<IWifiRttController>>
+WifiChip::createRttControllerInternal_1_4(const sp<IWifiIface>& bound_iface) {
+    if (sta_ifaces_.size() == 0 &&
+        !canCurrentModeSupportIfaceOfType(IfaceType::STA)) {
+        LOG(ERROR)
+            << "createRttControllerInternal_1_4: Chip cannot support STAs "
+               "(and RTT by extension)";
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
+    }
+    sp<WifiRttController> rtt = new WifiRttController(
+        getFirstActiveWlanIfaceName(), bound_iface, legacy_hal_);
+    rtt_controllers_.emplace_back(rtt);
+    return {createWifiStatus(WifiStatusCode::SUCCESS), rtt};
+}
+
 WifiStatus WifiChip::handleChipConfiguration(
     /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock,
     ChipModeId mode_id) {
@@ -1539,7 +1552,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_chip.h b/wifi/1.4/default/wifi_chip.h
similarity index 95%
rename from wifi/1.3/default/wifi_chip.h
rename to wifi/1.4/default/wifi_chip.h
index 153ca6a..3bf1847 100644
--- a/wifi/1.3/default/wifi_chip.h
+++ b/wifi/1.4/default/wifi_chip.h
@@ -21,7 +21,8 @@
 #include <map>
 
 #include <android-base/macros.h>
-#include <android/hardware/wifi/1.3/IWifiChip.h>
+#include <android/hardware/wifi/1.4/IWifiChip.h>
+#include <android/hardware/wifi/1.4/IWifiRttController.h>
 
 #include "hidl_callback_util.h"
 #include "ringbuffer.h"
@@ -37,7 +38,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 using namespace android::hardware::wifi::V1_0;
 
@@ -46,7 +47,7 @@
  * Since there is only a single chip instance used today, there is no
  * identifying handle information stored here.
  */
-class WifiChip : public V1_3::IWifiChip {
+class WifiChip : public V1_4::IWifiChip {
    public:
     WifiChip(
         ChipId chip_id,
@@ -152,6 +153,9 @@
         getCapabilities_cb hidl_status_cb) override;
     Return<void> debug(const hidl_handle& handle,
                        const hidl_vec<hidl_string>& options) override;
+    Return<void> createRttController_1_4(
+        const sp<IWifiIface>& bound_iface,
+        createRttController_1_4_cb hidl_status_cb) override;
 
    private:
     void invalidateAndRemoveAllIfaces();
@@ -195,8 +199,8 @@
     std::pair<WifiStatus, sp<IWifiStaIface>> getStaIfaceInternal(
         const std::string& ifname);
     WifiStatus removeStaIfaceInternal(const std::string& ifname);
-    std::pair<WifiStatus, sp<IWifiRttController>> createRttControllerInternal(
-        const sp<IWifiIface>& bound_iface);
+    std::pair<WifiStatus, sp<V1_0::IWifiRttController>>
+    createRttControllerInternal(const sp<IWifiIface>& bound_iface);
     std::pair<WifiStatus, std::vector<WifiDebugRingBufferStatus>>
     getDebugRingBuffersStatusInternal();
     WifiStatus startLoggingToDebugRingBufferInternal(
@@ -217,6 +221,8 @@
         const sp<V1_2::IWifiChipEventCallback>& event_callback);
     WifiStatus selectTxPowerScenarioInternal_1_2(TxPowerScenario scenario);
     std::pair<WifiStatus, uint32_t> getCapabilitiesInternal_1_3();
+    std::pair<WifiStatus, sp<IWifiRttController>>
+    createRttControllerInternal_1_4(const sp<IWifiIface>& bound_iface);
     WifiStatus handleChipConfiguration(
         std::unique_lock<std::recursive_mutex>* lock, ChipModeId mode_id);
     WifiStatus registerDebugRingBufferCallback();
@@ -251,7 +257,6 @@
     std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
     std::weak_ptr<mode_controller::WifiModeController> mode_controller_;
     std::weak_ptr<iface_util::WifiIfaceUtil> iface_util_;
-    std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags_;
     std::vector<sp<WifiApIface>> ap_ifaces_;
     std::vector<sp<WifiNanIface>> nan_ifaces_;
     std::vector<sp<WifiP2pIface>> p2p_ifaces_;
@@ -273,7 +278,7 @@
 };
 
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_feature_flags.cpp b/wifi/1.4/default/wifi_feature_flags.cpp
similarity index 92%
rename from wifi/1.3/default/wifi_feature_flags.cpp
rename to wifi/1.4/default/wifi_feature_flags.cpp
index 7212cfa..195b460 100644
--- a/wifi/1.3/default/wifi_feature_flags.cpp
+++ b/wifi/1.4/default/wifi_feature_flags.cpp
@@ -19,7 +19,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace feature_flags {
 
@@ -145,10 +145,12 @@
 #undef NAN
 
 #ifdef WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
-static const bool wifiHidlFeatureDisableApMacRandomization = true;
-#else
-static const bool wifiHidlFeatureDisableApMacRandomization = false;
-#endif  // WIFI_HIDL_FEATURE_DISABLE_AP
+#pragma message                                                               \
+    "WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION is deprecated; override " \
+    "'config_wifi_ap_randomization_supported' in "                            \
+    "frameworks/base/core/res/res/values/config.xml in the device overlay "   \
+    "instead"
+#endif  // WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
 
 WifiFeatureFlags::WifiFeatureFlags() {}
 
@@ -156,13 +158,9 @@
     return kChipModes;
 }
 
-bool WifiFeatureFlags::isApMacRandomizationDisabled() {
-    return wifiHidlFeatureDisableApMacRandomization;
-}
-
 }  // namespace feature_flags
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_feature_flags.h b/wifi/1.4/default/wifi_feature_flags.h
similarity index 94%
rename from wifi/1.3/default/wifi_feature_flags.h
rename to wifi/1.4/default/wifi_feature_flags.h
index 3ae6920..292dedf 100644
--- a/wifi/1.3/default/wifi_feature_flags.h
+++ b/wifi/1.4/default/wifi_feature_flags.h
@@ -22,7 +22,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace feature_flags {
 
@@ -43,12 +43,11 @@
     virtual ~WifiFeatureFlags() = default;
 
     virtual std::vector<V1_0::IWifiChip::ChipMode> getChipModes();
-    virtual bool isApMacRandomizationDisabled();
 };
 
 }  // namespace feature_flags
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_iface_util.cpp b/wifi/1.4/default/wifi_iface_util.cpp
similarity index 98%
rename from wifi/1.3/default/wifi_iface_util.cpp
rename to wifi/1.4/default/wifi_iface_util.cpp
index 34bc02d..2883b46 100644
--- a/wifi/1.3/default/wifi_iface_util.cpp
+++ b/wifi/1.4/default/wifi_iface_util.cpp
@@ -35,7 +35,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace iface_util {
 
@@ -112,7 +112,7 @@
 }
 }  // namespace iface_util
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_iface_util.h b/wifi/1.4/default/wifi_iface_util.h
similarity index 98%
rename from wifi/1.3/default/wifi_iface_util.h
rename to wifi/1.4/default/wifi_iface_util.h
index 98073e0..35edff6 100644
--- a/wifi/1.3/default/wifi_iface_util.h
+++ b/wifi/1.4/default/wifi_iface_util.h
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace iface_util {
 
@@ -67,7 +67,7 @@
 
 }  // namespace iface_util
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_legacy_hal.cpp b/wifi/1.4/default/wifi_legacy_hal.cpp
similarity index 99%
rename from wifi/1.3/default/wifi_legacy_hal.cpp
rename to wifi/1.4/default/wifi_legacy_hal.cpp
index 485bd16..ae3c447 100644
--- a/wifi/1.3/default/wifi_legacy_hal.cpp
+++ b/wifi/1.4/default/wifi_legacy_hal.cpp
@@ -50,7 +50,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace legacy_hal {
 // Legacy HAL functions accept "C" style function pointers, so use global
@@ -479,7 +479,7 @@
 std::pair<wifi_error, uint32_t> WifiLegacyHal::getSupportedFeatureSet(
     const std::string& iface_name) {
     feature_set set;
-    static_assert(sizeof(set) == sizeof(uint32_t),
+    static_assert(sizeof(set) == sizeof(uint64_t),
                   "Some feature_flags can not be represented in output");
     wifi_error status = global_func_table_.wifi_get_supported_feature_set(
         getIfaceHandle(iface_name), &set);
@@ -1449,7 +1449,7 @@
 
 }  // namespace legacy_hal
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_legacy_hal.h b/wifi/1.4/default/wifi_legacy_hal.h
similarity index 99%
rename from wifi/1.3/default/wifi_legacy_hal.h
rename to wifi/1.4/default/wifi_legacy_hal.h
index 9cfa172..7f16c30 100644
--- a/wifi/1.3/default/wifi_legacy_hal.h
+++ b/wifi/1.4/default/wifi_legacy_hal.h
@@ -35,7 +35,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 // This is in a separate namespace to prevent typename conflicts between
 // the legacy HAL types and the HIDL interface types.
@@ -396,7 +396,7 @@
 
 }  // namespace legacy_hal
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_legacy_hal_stubs.cpp b/wifi/1.4/default/wifi_legacy_hal_stubs.cpp
similarity index 99%
rename from wifi/1.3/default/wifi_legacy_hal_stubs.cpp
rename to wifi/1.4/default/wifi_legacy_hal_stubs.cpp
index dedd2d4..27afa1f 100644
--- a/wifi/1.3/default/wifi_legacy_hal_stubs.cpp
+++ b/wifi/1.4/default/wifi_legacy_hal_stubs.cpp
@@ -20,7 +20,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace legacy_hal {
 template <typename>
@@ -142,7 +142,7 @@
 }
 }  // namespace legacy_hal
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_legacy_hal_stubs.h b/wifi/1.4/default/wifi_legacy_hal_stubs.h
similarity index 96%
rename from wifi/1.3/default/wifi_legacy_hal_stubs.h
rename to wifi/1.4/default/wifi_legacy_hal_stubs.h
index 64854e0..577a545 100644
--- a/wifi/1.3/default/wifi_legacy_hal_stubs.h
+++ b/wifi/1.4/default/wifi_legacy_hal_stubs.h
@@ -20,7 +20,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace legacy_hal {
 #include <hardware_legacy/wifi_hal.h>
@@ -28,7 +28,7 @@
 bool initHalFuncTableWithStubs(wifi_hal_fn* hal_fn);
 }  // namespace legacy_hal
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_mode_controller.cpp b/wifi/1.4/default/wifi_mode_controller.cpp
similarity index 98%
rename from wifi/1.3/default/wifi_mode_controller.cpp
rename to wifi/1.4/default/wifi_mode_controller.cpp
index c392486..252121a 100644
--- a/wifi/1.3/default/wifi_mode_controller.cpp
+++ b/wifi/1.4/default/wifi_mode_controller.cpp
@@ -48,7 +48,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace mode_controller {
 
@@ -85,7 +85,7 @@
 }
 }  // namespace mode_controller
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_mode_controller.h b/wifi/1.4/default/wifi_mode_controller.h
similarity index 97%
rename from wifi/1.3/default/wifi_mode_controller.h
rename to wifi/1.4/default/wifi_mode_controller.h
index ace5a52..45fa999 100644
--- a/wifi/1.3/default/wifi_mode_controller.h
+++ b/wifi/1.4/default/wifi_mode_controller.h
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 namespace mode_controller {
 using namespace android::hardware::wifi::V1_0;
@@ -55,7 +55,7 @@
 
 }  // namespace mode_controller
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_nan_iface.cpp b/wifi/1.4/default/wifi_nan_iface.cpp
similarity index 99%
rename from wifi/1.3/default/wifi_nan_iface.cpp
rename to wifi/1.4/default/wifi_nan_iface.cpp
index ff9f422..981acb2 100644
--- a/wifi/1.3/default/wifi_nan_iface.cpp
+++ b/wifi/1.4/default/wifi_nan_iface.cpp
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 using hidl_return_util::validateAndCall;
 
@@ -881,7 +881,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_nan_iface.h b/wifi/1.4/default/wifi_nan_iface.h
similarity index 99%
rename from wifi/1.3/default/wifi_nan_iface.h
rename to wifi/1.4/default/wifi_nan_iface.h
index 737be93..e3a5c34 100644
--- a/wifi/1.3/default/wifi_nan_iface.h
+++ b/wifi/1.4/default/wifi_nan_iface.h
@@ -28,7 +28,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 using namespace android::hardware::wifi::V1_0;
 
@@ -160,7 +160,7 @@
 };
 
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_p2p_iface.cpp b/wifi/1.4/default/wifi_p2p_iface.cpp
similarity index 97%
rename from wifi/1.3/default/wifi_p2p_iface.cpp
rename to wifi/1.4/default/wifi_p2p_iface.cpp
index b5d5886..9e7341f 100644
--- a/wifi/1.3/default/wifi_p2p_iface.cpp
+++ b/wifi/1.4/default/wifi_p2p_iface.cpp
@@ -23,7 +23,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 using hidl_return_util::validateAndCall;
 
@@ -60,7 +60,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_p2p_iface.h b/wifi/1.4/default/wifi_p2p_iface.h
similarity index 97%
rename from wifi/1.3/default/wifi_p2p_iface.h
rename to wifi/1.4/default/wifi_p2p_iface.h
index 8a7207a..a6fc59d 100644
--- a/wifi/1.3/default/wifi_p2p_iface.h
+++ b/wifi/1.4/default/wifi_p2p_iface.h
@@ -25,7 +25,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 using namespace android::hardware::wifi::V1_0;
 
@@ -58,7 +58,7 @@
 };
 
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_rtt_controller.cpp b/wifi/1.4/default/wifi_rtt_controller.cpp
similarity index 78%
rename from wifi/1.3/default/wifi_rtt_controller.cpp
rename to wifi/1.4/default/wifi_rtt_controller.cpp
index 3dcbee6..594a116 100644
--- a/wifi/1.3/default/wifi_rtt_controller.cpp
+++ b/wifi/1.4/default/wifi_rtt_controller.cpp
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 using hidl_return_util::validateAndCall;
 
@@ -58,7 +58,7 @@
 }
 
 Return<void> WifiRttController::registerEventCallback(
-    const sp<IWifiRttControllerEventCallback>& callback,
+    const sp<V1_0::IWifiRttControllerEventCallback>& callback,
     registerEventCallback_cb hidl_status_cb) {
     return validateAndCall(this,
                            WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
@@ -67,7 +67,7 @@
 }
 
 Return<void> WifiRttController::rangeRequest(
-    uint32_t cmd_id, const hidl_vec<RttConfig>& rtt_configs,
+    uint32_t cmd_id, const hidl_vec<V1_0::RttConfig>& rtt_configs,
     rangeRequest_cb hidl_status_cb) {
     return validateAndCall(this,
                            WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
@@ -115,7 +115,7 @@
 
 Return<void> WifiRttController::enableResponder(
     uint32_t cmd_id, const WifiChannelInfo& channel_hint,
-    uint32_t max_duration_seconds, const RttResponder& info,
+    uint32_t max_duration_seconds, const V1_0::RttResponder& info,
     enableResponder_cb hidl_status_cb) {
     return validateAndCall(
         this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
@@ -130,49 +130,64 @@
         &WifiRttController::disableResponderInternal, hidl_status_cb, cmd_id);
 }
 
+Return<void> WifiRttController::registerEventCallback_1_4(
+    const sp<IWifiRttControllerEventCallback>& callback,
+    registerEventCallback_1_4_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+        &WifiRttController::registerEventCallbackInternal_1_4, hidl_status_cb,
+        callback);
+}
+
+Return<void> WifiRttController::rangeRequest_1_4(
+    uint32_t cmd_id, const hidl_vec<RttConfig>& rtt_configs,
+    rangeRequest_1_4_cb hidl_status_cb) {
+    return validateAndCall(this,
+                           WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::rangeRequestInternal_1_4,
+                           hidl_status_cb, cmd_id, rtt_configs);
+}
+
+Return<void> WifiRttController::getCapabilities_1_4(
+    getCapabilities_1_4_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+        &WifiRttController::getCapabilitiesInternal_1_4, hidl_status_cb);
+}
+
+Return<void> WifiRttController::getResponderInfo_1_4(
+    getResponderInfo_1_4_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+        &WifiRttController::getResponderInfoInternal_1_4, hidl_status_cb);
+}
+
+Return<void> WifiRttController::enableResponder_1_4(
+    uint32_t cmd_id, const WifiChannelInfo& channel_hint,
+    uint32_t max_duration_seconds, const RttResponder& info,
+    enableResponder_1_4_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+        &WifiRttController::enableResponderInternal_1_4, hidl_status_cb, cmd_id,
+        channel_hint, max_duration_seconds, info);
+}
+
 std::pair<WifiStatus, sp<IWifiIface>>
 WifiRttController::getBoundIfaceInternal() {
     return {createWifiStatus(WifiStatusCode::SUCCESS), bound_iface_};
 }
 
 WifiStatus WifiRttController::registerEventCallbackInternal(
-    const sp<IWifiRttControllerEventCallback>& callback) {
-    // TODO(b/31632518): remove the callback when the client is destroyed
-    event_callbacks_.emplace_back(callback);
-    return createWifiStatus(WifiStatusCode::SUCCESS);
+    const sp<V1_0::IWifiRttControllerEventCallback>& /* callback */) {
+    // Deprecated support for this api
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
 }
 
 WifiStatus WifiRttController::rangeRequestInternal(
-    uint32_t cmd_id, const std::vector<RttConfig>& rtt_configs) {
-    std::vector<legacy_hal::wifi_rtt_config> legacy_configs;
-    if (!hidl_struct_util::convertHidlVectorOfRttConfigToLegacy(
-            rtt_configs, &legacy_configs)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    android::wp<WifiRttController> weak_ptr_this(this);
-    const auto& on_results_callback =
-        [weak_ptr_this](
-            legacy_hal::wifi_request_id id,
-            const std::vector<const legacy_hal::wifi_rtt_result*>& results) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            std::vector<RttResult> hidl_results;
-            if (!hidl_struct_util::convertLegacyVectorOfRttResultToHidl(
-                    results, &hidl_results)) {
-                LOG(ERROR) << "Failed to convert rtt results to HIDL structs";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                callback->onResults(id, hidl_results);
-            }
-        };
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->startRttRangeRequest(
-            ifname_, cmd_id, legacy_configs, on_results_callback);
-    return createWifiStatusFromLegacyError(legacy_status);
+    uint32_t /* cmd_id */,
+    const std::vector<V1_0::RttConfig>& /* rtt_configs */) {
+    // Deprecated support for this api
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
 }
 
 WifiStatus WifiRttController::rangeCancelInternal(
@@ -187,21 +202,10 @@
     return createWifiStatusFromLegacyError(legacy_status);
 }
 
-std::pair<WifiStatus, RttCapabilities>
+std::pair<WifiStatus, V1_0::RttCapabilities>
 WifiRttController::getCapabilitiesInternal() {
-    legacy_hal::wifi_error legacy_status;
-    legacy_hal::wifi_rtt_capabilities legacy_caps;
-    std::tie(legacy_status, legacy_caps) =
-        legacy_hal_.lock()->getRttCapabilities(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    RttCapabilities hidl_caps;
-    if (!hidl_struct_util::convertLegacyRttCapabilitiesToHidl(legacy_caps,
-                                                              &hidl_caps)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+    // Deprecated support for this api
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
 }
 
 WifiStatus WifiRttController::setLciInternal(uint32_t cmd_id,
@@ -228,8 +232,84 @@
     return createWifiStatusFromLegacyError(legacy_status);
 }
 
-std::pair<WifiStatus, RttResponder>
+std::pair<WifiStatus, V1_0::RttResponder>
 WifiRttController::getResponderInfoInternal() {
+    // Deprecated support for this api
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
+}
+
+WifiStatus WifiRttController::enableResponderInternal(
+    uint32_t /* cmd_id */, const WifiChannelInfo& /* channel_hint */,
+    uint32_t /* max_duration_seconds */, const V1_0::RttResponder& /* info */) {
+    // Deprecated support for this api
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED)};
+}
+
+WifiStatus WifiRttController::disableResponderInternal(uint32_t cmd_id) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->disableRttResponder(ifname_, cmd_id);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiRttController::registerEventCallbackInternal_1_4(
+    const sp<IWifiRttControllerEventCallback>& callback) {
+    // TODO(b/31632518): remove the callback when the client is destroyed
+    event_callbacks_.emplace_back(callback);
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus WifiRttController::rangeRequestInternal_1_4(
+    uint32_t cmd_id, const std::vector<RttConfig>& rtt_configs) {
+    std::vector<legacy_hal::wifi_rtt_config> legacy_configs;
+    if (!hidl_struct_util::convertHidlVectorOfRttConfigToLegacy(
+            rtt_configs, &legacy_configs)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    android::wp<WifiRttController> weak_ptr_this(this);
+    const auto& on_results_callback =
+        [weak_ptr_this](
+            legacy_hal::wifi_request_id id,
+            const std::vector<const legacy_hal::wifi_rtt_result*>& results) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            std::vector<RttResult> hidl_results;
+            if (!hidl_struct_util::convertLegacyVectorOfRttResultToHidl(
+                    results, &hidl_results)) {
+                LOG(ERROR) << "Failed to convert rtt results to HIDL structs";
+                return;
+            }
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                callback->onResults_1_4(id, hidl_results);
+            }
+        };
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->startRttRangeRequest(
+            ifname_, cmd_id, legacy_configs, on_results_callback);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, RttCapabilities>
+WifiRttController::getCapabilitiesInternal_1_4() {
+    legacy_hal::wifi_error legacy_status;
+    legacy_hal::wifi_rtt_capabilities legacy_caps;
+    std::tie(legacy_status, legacy_caps) =
+        legacy_hal_.lock()->getRttCapabilities(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    RttCapabilities hidl_caps;
+    if (!hidl_struct_util::convertLegacyRttCapabilitiesToHidl(legacy_caps,
+                                                              &hidl_caps)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+}
+
+std::pair<WifiStatus, RttResponder>
+WifiRttController::getResponderInfoInternal_1_4() {
     legacy_hal::wifi_error legacy_status;
     legacy_hal::wifi_rtt_responder legacy_responder;
     std::tie(legacy_status, legacy_responder) =
@@ -245,7 +325,7 @@
     return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_responder};
 }
 
-WifiStatus WifiRttController::enableResponderInternal(
+WifiStatus WifiRttController::enableResponderInternal_1_4(
     uint32_t cmd_id, const WifiChannelInfo& channel_hint,
     uint32_t max_duration_seconds, const RttResponder& info) {
     legacy_hal::wifi_channel_info legacy_channel_info;
@@ -264,14 +344,8 @@
             legacy_responder);
     return createWifiStatusFromLegacyError(legacy_status);
 }
-
-WifiStatus WifiRttController::disableResponderInternal(uint32_t cmd_id) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->disableRttResponder(ifname_, cmd_id);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_rtt_controller.h b/wifi/1.4/default/wifi_rtt_controller.h
similarity index 66%
rename from wifi/1.3/default/wifi_rtt_controller.h
rename to wifi/1.4/default/wifi_rtt_controller.h
index eedd22a..1f12555 100644
--- a/wifi/1.3/default/wifi_rtt_controller.h
+++ b/wifi/1.4/default/wifi_rtt_controller.h
@@ -19,21 +19,21 @@
 
 #include <android-base/macros.h>
 #include <android/hardware/wifi/1.0/IWifiIface.h>
-#include <android/hardware/wifi/1.0/IWifiRttController.h>
-#include <android/hardware/wifi/1.0/IWifiRttControllerEventCallback.h>
+#include <android/hardware/wifi/1.4/IWifiRttController.h>
+#include <android/hardware/wifi/1.4/IWifiRttControllerEventCallback.h>
 
 #include "wifi_legacy_hal.h"
 
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 
 /**
  * HIDL interface object used to control all RTT operations.
  */
-class WifiRttController : public V1_0::IWifiRttController {
+class WifiRttController : public V1_4::IWifiRttController {
    public:
     WifiRttController(
         const std::string& iface_name, const sp<IWifiIface>& bound_iface,
@@ -47,10 +47,10 @@
     // HIDL methods exposed.
     Return<void> getBoundIface(getBoundIface_cb hidl_status_cb) override;
     Return<void> registerEventCallback(
-        const sp<IWifiRttControllerEventCallback>& callback,
+        const sp<V1_0::IWifiRttControllerEventCallback>& callback,
         registerEventCallback_cb hidl_status_cb) override;
     Return<void> rangeRequest(uint32_t cmd_id,
-                              const hidl_vec<RttConfig>& rtt_configs,
+                              const hidl_vec<V1_0::RttConfig>& rtt_configs,
                               rangeRequest_cb hidl_status_cb) override;
     Return<void> rangeCancel(uint32_t cmd_id,
                              const hidl_vec<hidl_array<uint8_t, 6>>& addrs,
@@ -64,29 +64,53 @@
     Return<void> enableResponder(uint32_t cmd_id,
                                  const WifiChannelInfo& channel_hint,
                                  uint32_t max_duration_seconds,
-                                 const RttResponder& info,
+                                 const V1_0::RttResponder& info,
                                  enableResponder_cb hidl_status_cb) override;
     Return<void> disableResponder(uint32_t cmd_id,
                                   disableResponder_cb hidl_status_cb) override;
+    Return<void> registerEventCallback_1_4(
+        const sp<IWifiRttControllerEventCallback>& callback,
+        registerEventCallback_1_4_cb hidl_status_cb) override;
+    Return<void> rangeRequest_1_4(uint32_t cmd_id,
+                                  const hidl_vec<RttConfig>& rtt_configs,
+                                  rangeRequest_1_4_cb hidl_status_cb) override;
+    Return<void> getCapabilities_1_4(
+        getCapabilities_1_4_cb hidl_status_cb) override;
+    Return<void> getResponderInfo_1_4(
+        getResponderInfo_1_4_cb hidl_status_cb) override;
+    Return<void> enableResponder_1_4(
+        uint32_t cmd_id, const WifiChannelInfo& channel_hint,
+        uint32_t max_duration_seconds, const RttResponder& info,
+        enableResponder_1_4_cb hidl_status_cb) override;
 
    private:
     // Corresponding worker functions for the HIDL methods.
     std::pair<WifiStatus, sp<IWifiIface>> getBoundIfaceInternal();
     WifiStatus registerEventCallbackInternal(
-        const sp<IWifiRttControllerEventCallback>& callback);
-    WifiStatus rangeRequestInternal(uint32_t cmd_id,
-                                    const std::vector<RttConfig>& rtt_configs);
+        const sp<V1_0::IWifiRttControllerEventCallback>& callback);
+    WifiStatus rangeRequestInternal(
+        uint32_t cmd_id, const std::vector<V1_0::RttConfig>& rtt_configs);
     WifiStatus rangeCancelInternal(
         uint32_t cmd_id, const std::vector<hidl_array<uint8_t, 6>>& addrs);
-    std::pair<WifiStatus, RttCapabilities> getCapabilitiesInternal();
+    std::pair<WifiStatus, V1_0::RttCapabilities> getCapabilitiesInternal();
     WifiStatus setLciInternal(uint32_t cmd_id, const RttLciInformation& lci);
     WifiStatus setLcrInternal(uint32_t cmd_id, const RttLcrInformation& lcr);
-    std::pair<WifiStatus, RttResponder> getResponderInfoInternal();
+    std::pair<WifiStatus, V1_0::RttResponder> getResponderInfoInternal();
     WifiStatus enableResponderInternal(uint32_t cmd_id,
                                        const WifiChannelInfo& channel_hint,
                                        uint32_t max_duration_seconds,
-                                       const RttResponder& info);
+                                       const V1_0::RttResponder& info);
     WifiStatus disableResponderInternal(uint32_t cmd_id);
+    WifiStatus registerEventCallbackInternal_1_4(
+        const sp<IWifiRttControllerEventCallback>& callback);
+    WifiStatus rangeRequestInternal_1_4(
+        uint32_t cmd_id, const std::vector<RttConfig>& rtt_configs);
+    std::pair<WifiStatus, RttCapabilities> getCapabilitiesInternal_1_4();
+    std::pair<WifiStatus, RttResponder> getResponderInfoInternal_1_4();
+    WifiStatus enableResponderInternal_1_4(uint32_t cmd_id,
+                                           const WifiChannelInfo& channel_hint,
+                                           uint32_t max_duration_seconds,
+                                           const RttResponder& info);
 
     std::string ifname_;
     sp<IWifiIface> bound_iface_;
@@ -98,7 +122,7 @@
 };
 
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_sta_iface.cpp b/wifi/1.4/default/wifi_sta_iface.cpp
similarity index 97%
rename from wifi/1.3/default/wifi_sta_iface.cpp
rename to wifi/1.4/default/wifi_sta_iface.cpp
index a6539e5..8e1ada1 100644
--- a/wifi/1.3/default/wifi_sta_iface.cpp
+++ b/wifi/1.4/default/wifi_sta_iface.cpp
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 using hidl_return_util::validateAndCall;
 
@@ -266,6 +266,13 @@
                            hidl_status_cb);
 }
 
+Return<void> WifiStaIface::getCapabilities_1_4(
+    getCapabilities_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getCapabilitiesInternal_1_4,
+                           hidl_status_cb);
+}
+
 std::pair<WifiStatus, std::string> WifiStaIface::getNameInternal() {
     return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
 }
@@ -283,26 +290,7 @@
 }
 
 std::pair<WifiStatus, uint32_t> WifiStaIface::getCapabilitiesInternal() {
-    legacy_hal::wifi_error legacy_status;
-    uint32_t legacy_feature_set;
-    std::tie(legacy_status, legacy_feature_set) =
-        legacy_hal_.lock()->getSupportedFeatureSet(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), 0};
-    }
-    uint32_t legacy_logger_feature_set;
-    std::tie(legacy_status, legacy_logger_feature_set) =
-        legacy_hal_.lock()->getLoggerSupportedFeatureSet(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        // some devices don't support querying logger feature set
-        legacy_logger_feature_set = 0;
-    }
-    uint32_t hidl_caps;
-    if (!hidl_struct_util::convertLegacyFeaturesToHidlStaCapabilities(
-            legacy_feature_set, legacy_logger_feature_set, &hidl_caps)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), 0};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), 0};
 }
 
 std::pair<WifiStatus, StaApfPacketFilterCapabilities>
@@ -640,8 +628,31 @@
     return {createWifiStatus(WifiStatusCode::SUCCESS), mac};
 }
 
+std::pair<WifiStatus, uint32_t> WifiStaIface::getCapabilitiesInternal_1_4() {
+    legacy_hal::wifi_error legacy_status;
+    uint64_t legacy_feature_set;
+    std::tie(legacy_status, legacy_feature_set) =
+        legacy_hal_.lock()->getSupportedFeatureSet(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), 0};
+    }
+    uint32_t legacy_logger_feature_set;
+    std::tie(legacy_status, legacy_logger_feature_set) =
+        legacy_hal_.lock()->getLoggerSupportedFeatureSet(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        // some devices don't support querying logger feature set
+        legacy_logger_feature_set = 0;
+    }
+    uint32_t hidl_caps;
+    if (!hidl_struct_util::convertLegacyFeaturesToHidlStaCapabilities(
+            legacy_feature_set, legacy_logger_feature_set, &hidl_caps)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), 0};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+}
+
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_sta_iface.h b/wifi/1.4/default/wifi_sta_iface.h
similarity index 96%
rename from wifi/1.3/default/wifi_sta_iface.h
rename to wifi/1.4/default/wifi_sta_iface.h
index 9224939..ccf234f 100644
--- a/wifi/1.3/default/wifi_sta_iface.h
+++ b/wifi/1.4/default/wifi_sta_iface.h
@@ -19,7 +19,7 @@
 
 #include <android-base/macros.h>
 #include <android/hardware/wifi/1.0/IWifiStaIfaceEventCallback.h>
-#include <android/hardware/wifi/1.3/IWifiStaIface.h>
+#include <android/hardware/wifi/1.4/IWifiStaIface.h>
 
 #include "hidl_callback_util.h"
 #include "wifi_iface_util.h"
@@ -28,14 +28,14 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 using namespace android::hardware::wifi::V1_0;
 
 /**
  * HIDL interface object used to control a STA Iface instance.
  */
-class WifiStaIface : public V1_3::IWifiStaIface {
+class WifiStaIface : public V1_4::IWifiStaIface {
    public:
     WifiStaIface(const std::string& ifname,
                  const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
@@ -111,6 +111,8 @@
                                setMacAddress_cb hidl_status_cb) override;
     Return<void> getFactoryMacAddress(
         getFactoryMacAddress_cb hidl_status_cb) override;
+    Return<void> getCapabilities_1_4(
+        getCapabilities_1_4_cb hidl_status_cb) override;
 
    private:
     // Corresponding worker functions for the HIDL methods.
@@ -159,6 +161,7 @@
     WifiStatus setMacAddressInternal(const std::array<uint8_t, 6>& mac);
     std::pair<WifiStatus, std::array<uint8_t, 6>>
     getFactoryMacAddressInternal();
+    std::pair<WifiStatus, uint32_t> getCapabilitiesInternal_1_4();
 
     std::string ifname_;
     std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
@@ -171,7 +174,7 @@
 };
 
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_status_util.cpp b/wifi/1.4/default/wifi_status_util.cpp
similarity index 94%
rename from wifi/1.3/default/wifi_status_util.cpp
rename to wifi/1.4/default/wifi_status_util.cpp
index 0a5bb13..8ceb926 100644
--- a/wifi/1.3/default/wifi_status_util.cpp
+++ b/wifi/1.4/default/wifi_status_util.cpp
@@ -19,7 +19,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 
 std::string legacyErrorToString(legacy_hal::wifi_error error) {
@@ -46,6 +46,8 @@
             return "BUSY";
         case legacy_hal::WIFI_ERROR_UNKNOWN:
             return "UNKNOWN";
+        default:
+            return "UNKNOWN ERROR";
     }
 }
 
@@ -92,6 +94,10 @@
 
         case legacy_hal::WIFI_ERROR_UNKNOWN:
             return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN, "unknown");
+
+        default:
+            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN,
+                                    "unknown error");
     }
 }
 
@@ -100,7 +106,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/wifi_status_util.h b/wifi/1.4/default/wifi_status_util.h
similarity index 94%
rename from wifi/1.3/default/wifi_status_util.h
rename to wifi/1.4/default/wifi_status_util.h
index bc8baa9..3ff58f0 100644
--- a/wifi/1.3/default/wifi_status_util.h
+++ b/wifi/1.4/default/wifi_status_util.h
@@ -17,14 +17,14 @@
 #ifndef WIFI_STATUS_UTIL_H_
 #define WIFI_STATUS_UTIL_H_
 
-#include <android/hardware/wifi/1.0/IWifi.h>
+#include <android/hardware/wifi/1.4/IWifi.h>
 
 #include "wifi_legacy_hal.h"
 
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_3 {
+namespace V1_4 {
 namespace implementation {
 using namespace android::hardware::wifi::V1_0;
 
@@ -37,7 +37,7 @@
 WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error);
 
 }  // namespace implementation
-}  // namespace V1_3
+}  // namespace V1_4
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.4/types.hal b/wifi/1.4/types.hal
new file mode 100644
index 0000000..232e26f
--- /dev/null
+++ b/wifi/1.4/types.hal
@@ -0,0 +1,380 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi@1.4;
+
+import @1.0::MacAddress;
+import @1.0::Rssi;
+import @1.0::RttBw;
+import @1.0::RttConfig;
+import @1.0::RttPeerType;
+import @1.0::RttPreamble;
+import @1.0::RttStatus;
+import @1.0::RttType;
+import @1.0::TimeSpanInPs;
+import @1.0::TimeStampInUs;
+import @1.0::WifiChannelInfo;
+import @1.0::WifiChannelWidthInMhz;
+import @1.0::WifiInformationElement;
+import @1.0::WifiRateNss;
+import @1.0::WifiRatePreamble;
+
+/**
+ * Wifi Rate Preamble
+ */
+enum WifiRatePreamble : @1.0::WifiRatePreamble {
+    /**
+     * Preamble type for 11ax
+     */
+    HE = 5,
+};
+
+/**
+ * RTT Measurement Preamble.
+ */
+enum RttPreamble : @1.0::RttPreamble {
+    /**
+     * Preamble type for 11ax
+     */
+    HE = 0x8,
+};
+
+/**
+ * RTT configuration.
+ */
+struct RttConfig {
+    /**
+     * Peer device mac address.
+     */
+    MacAddress addr;
+
+    /**
+     * 1-sided or 2-sided RTT.
+     */
+    RttType type;
+
+    /**
+     * Optional - peer device hint (STA, P2P, AP).
+     */
+    RttPeerType peer;
+
+    /**
+     * Required for STA-AP mode, optional for P2P, NBD etc.
+     */
+    WifiChannelInfo channel;
+
+    /**
+     * Time interval between bursts (units: 100 ms).
+     * Applies to 1-sided and 2-sided RTT multi-burst requests.
+     * Range: 0-31, 0: no preference by initiator (2-sided RTT).
+     */
+    uint32_t burstPeriod;
+
+    /**
+     * Total number of RTT bursts to be executed. It will be
+     * specified in the same way as the parameter "Number of
+     * Burst Exponent" found in the FTM frame format. It
+     * applies to both: 1-sided RTT and 2-sided RTT. Valid
+     * values are 0 to 15 as defined in 802.11mc std.
+     * 0 means single shot
+     * The implication of this parameter on the maximum
+     * number of RTT results is the following:
+     * for 1-sided RTT: max num of RTT results = (2^num_burst)*(num_frames_per_burst)
+     * for 2-sided RTT: max num of RTT results = (2^num_burst)*(num_frames_per_burst - 1)
+     */
+    uint32_t numBurst;
+
+    /**
+     * Num of frames per burst.
+     * Minimum value = 1, Maximum value = 31
+     * For 2-sided this equals the number of FTM frames
+     * to be attempted in a single burst. This also
+     * equals the number of FTM frames that the
+     * initiator will request that the responder send
+     * in a single frame.
+     */
+    uint32_t numFramesPerBurst;
+
+    /**
+     * Number of retries for a failed RTT frame.
+     * Applies to 1-sided RTT only. Minimum value = 0, Maximum value = 3
+     */
+    uint32_t numRetriesPerRttFrame;
+
+    /**
+     * Following fields are only valid for 2-side RTT.
+     *
+     *
+     * Maximum number of retries that the initiator can
+     * retry an FTMR frame.
+     * Minimum value = 0, Maximum value = 3
+     */
+    uint32_t numRetriesPerFtmr;
+
+    /**
+     * Whether to request location civic info or not.
+     */
+    bool mustRequestLci;
+
+    /**
+     * Whether to request location civic records or not.
+     */
+    bool mustRequestLcr;
+
+    /**
+     * Applies to 1-sided and 2-sided RTT. Valid values will
+     * be 2-11 and 15 as specified by the 802.11mc std for
+     * the FTM parameter burst duration. In a multi-burst
+     * request, if responder overrides with larger value,
+     * the initiator will return failure. In a single-burst
+     * request if responder overrides with larger value,
+     * the initiator will sent TMR_STOP to terminate RTT
+     * at the end of the burst_duration it requested.
+     */
+    uint32_t burstDuration;
+
+    /**
+     * RTT preamble to be used in the RTT frames.
+     */
+    RttPreamble preamble;
+
+    /**
+     * RTT BW to be used in the RTT frames.
+     */
+    RttBw bw;
+};
+
+/**
+ * RTT Capabilities.
+ */
+struct RttCapabilities {
+    /**
+     * if 1-sided rtt data collection is supported.
+     */
+    bool rttOneSidedSupported;
+
+    /**
+     * if ftm rtt data collection is supported.
+     */
+    bool rttFtmSupported;
+
+    /**
+     * if initiator supports LCI request. Applies to 2-sided RTT.
+     */
+    bool lciSupported;
+
+    /**
+     * if initiator supports LCR request. Applies to 2-sided RTT.
+     */
+    bool lcrSupported;
+
+    /**
+     * if 11mc responder mode is supported.
+     */
+    bool responderSupported;
+
+    /**
+     * Bit mask indicates what preamble is supported by initiator.
+     * Combination of |RttPreamble| values.
+     */
+    bitfield<RttPreamble> preambleSupport;
+
+    /**
+     * Bit mask indicates what BW is supported by initiator.
+     * Combination of |RttBw| values.
+     */
+    bitfield<RttBw> bwSupport;
+
+    /**
+     * Draft 11mc spec version supported by chip.
+     * For instance, version 4.0 must be 40 and version 4.3 must be 43 etc.
+     */
+    uint8_t mcVersion;
+};
+
+/**
+ * RTT Responder information
+ */
+struct RttResponder {
+    WifiChannelInfo channel;
+
+    RttPreamble preamble;
+};
+
+/**
+ * Wifi rate info.
+ */
+struct WifiRateInfo {
+    /**
+     * Preamble used for RTT measurements.
+     */
+    WifiRatePreamble preamble;
+
+    /**
+     * Number of spatial streams.
+     */
+    WifiRateNss nss;
+
+    /**
+     * Bandwidth of channel.
+     */
+    WifiChannelWidthInMhz bw;
+
+    /**
+     * OFDM/CCK rate code would be as per ieee std in the units of 0.5mbps.
+     * HT/VHT/HE it would be mcs index.
+     */
+    uint8_t rateMcsIdx;
+
+    /**
+     * Bitrate in units of 100 Kbps.
+     */
+    uint32_t bitRateInKbps;
+};
+
+/**
+ * RTT results.
+ */
+struct RttResult {
+    /**
+     * Peer device mac address.
+     */
+    MacAddress addr;
+
+    /**
+     * Burst number in a multi-burst request.
+     */
+    uint32_t burstNum;
+
+    /**
+     * Total RTT measurement frames attempted.
+     */
+    uint32_t measurementNumber;
+
+    /**
+     * Total successful RTT measurement frames.
+     */
+    uint32_t successNumber;
+
+    /**
+     * Maximum number of "FTM frames per burst" supported by
+     * the responder STA. Applies to 2-sided RTT only.
+     * If reponder overrides with larger value:
+     * - for single-burst request initiator will truncate the
+     * larger value and send a TMR_STOP after receiving as
+     * many frames as originally requested.
+     * - for multi-burst request, initiator will return
+     * failure right away.
+     */
+    uint8_t numberPerBurstPeer;
+
+    /**
+     * Ranging status.
+     */
+    RttStatus status;
+
+    /**
+     * When status == RTT_STATUS_FAIL_BUSY_TRY_LATER,
+     * this will be the time provided by the responder as to
+     * when the request can be tried again. Applies to 2-sided
+     * RTT only. In sec, 1-31sec.
+     */
+    uint8_t retryAfterDuration;
+
+    /**
+     * RTT type.
+     */
+    RttType type;
+
+    /**
+     * Average rssi in 0.5 dB steps e.g. 143 implies -71.5 dB.
+     */
+    Rssi rssi;
+
+    /**
+     * Rssi spread in 0.5 dB steps e.g. 5 implies 2.5 dB spread (optional).
+     */
+    Rssi rssiSpread;
+
+    /**
+     * 1-sided RTT: TX rate of RTT frame.
+     * 2-sided RTT: TX rate of initiator's Ack in response to FTM frame.
+     */
+    WifiRateInfo txRate;
+
+    /**
+     * 1-sided RTT: TX rate of Ack from other side.
+     * 2-sided RTT: TX rate of FTM frame coming from responder.
+     */
+    WifiRateInfo rxRate;
+
+    /**
+     * Round trip time in picoseconds
+     */
+    TimeSpanInPs rtt;
+
+    /**
+     * Rtt standard deviation in picoseconds.
+     */
+    TimeSpanInPs rttSd;
+
+    /**
+     * Difference between max and min rtt times recorded in picoseconds.
+     */
+    TimeSpanInPs rttSpread;
+
+    /**
+     * Distance in mm (optional).
+     */
+    int32_t distanceInMm;
+
+    /**
+     * Standard deviation in mm (optional).
+     */
+    int32_t distanceSdInMm;
+
+    /**
+     * Difference between max and min distance recorded in mm (optional).
+     */
+    int32_t distanceSpreadInMm;
+
+    /**
+     * Time of the measurement (in microseconds since boot).
+     */
+    TimeStampInUs timeStampInUs;
+
+    /**
+     * in ms, actual time taken by the FW to finish one burst
+     * measurement. Applies to 1-sided and 2-sided RTT.
+     */
+    uint32_t burstDurationInMs;
+
+    /**
+     * Number of bursts allowed by the responder. Applies
+     * to 2-sided RTT only.
+     */
+    uint32_t negotiatedBurstNum;
+
+    /**
+     * for 11mc only.
+     */
+    WifiInformationElement lci;
+
+    /**
+     * for 11mc only.
+     */
+    WifiInformationElement lcr;
+};
diff --git a/wifi/1.3/default/OWNERS b/wifi/1.4/vts/OWNERS
similarity index 100%
copy from wifi/1.3/default/OWNERS
copy to wifi/1.4/vts/OWNERS
diff --git a/wifi/1.4/vts/functional/Android.bp b/wifi/1.4/vts/functional/Android.bp
new file mode 100644
index 0000000..215a810
--- /dev/null
+++ b/wifi/1.4/vts/functional/Android.bp
@@ -0,0 +1,34 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// SoftAP-specific tests, similar to VtsHalWifiApV1_0TargetTest.
+cc_test {
+    name: "VtsHalWifiApV1_4TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: [
+        "VtsHalWifiV1_4TargetTest.cpp",
+        "wifi_ap_iface_hidl_test.cpp",
+    ],
+    static_libs: [
+        "VtsHalWifiV1_0TargetTestUtil",
+        "android.hardware.wifi@1.0",
+        "android.hardware.wifi@1.1",
+        "android.hardware.wifi@1.2",
+        "android.hardware.wifi@1.3",
+        "android.hardware.wifi@1.4",
+        "libwifi-system-iface"
+    ],
+}
diff --git a/wifi/1.4/vts/functional/VtsHalWifiV1_4TargetTest.cpp b/wifi/1.4/vts/functional/VtsHalWifiV1_4TargetTest.cpp
new file mode 100644
index 0000000..deac0fa
--- /dev/null
+++ b/wifi/1.4/vts/functional/VtsHalWifiV1_4TargetTest.cpp
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android/hardware/wifi/1.4/IWifi.h>
+
+#include "wifi_hidl_test_utils.h"
+
+using ::android::hardware::wifi::V1_4::IWifi;
+
+// Test environment for Wifi HIDL HAL.
+class WifiHidlEnvironment_1_4 : public WifiHidlEnvironment {
+   public:
+    // get the test environment singleton
+    static WifiHidlEnvironment_1_4* Instance() {
+        static WifiHidlEnvironment_1_4* instance = new WifiHidlEnvironment_1_4;
+        return instance;
+    }
+
+    virtual void registerTestServices() override {
+        registerTestService<android::hardware::wifi::V1_4::IWifi>();
+    }
+
+   private:
+    WifiHidlEnvironment_1_4() {}
+};
+
+WifiHidlEnvironment_1_4* gEnv = WifiHidlEnvironment_1_4::Instance();
+
+int main(int argc, char** argv) {
+    ::testing::AddGlobalTestEnvironment(gEnv);
+    ::testing::InitGoogleTest(&argc, argv);
+    gEnv->init(&argc, argv);
+    int status = RUN_ALL_TESTS();
+    LOG(INFO) << "Test result = " << status;
+    return status;
+}
diff --git a/wifi/1.4/vts/functional/wifi_ap_iface_hidl_test.cpp b/wifi/1.4/vts/functional/wifi_ap_iface_hidl_test.cpp
new file mode 100644
index 0000000..68e9bbb
--- /dev/null
+++ b/wifi/1.4/vts/functional/wifi_ap_iface_hidl_test.cpp
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Staache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android/hardware/wifi/1.4/IWifiApIface.h>
+
+#include <VtsHalHidlTargetTestBase.h>
+
+#include "wifi_hidl_call_util.h"
+#include "wifi_hidl_test_utils.h"
+
+using ::android::sp;
+using ::android::hardware::hidl_array;
+using ::android::hardware::wifi::V1_0::WifiStatus;
+using ::android::hardware::wifi::V1_0::WifiStatusCode;
+using ::android::hardware::wifi::V1_4::IWifiApIface;
+
+extern WifiHidlEnvironment* gEnv;
+
+/**
+ * Fixture to use for all STA Iface HIDL interface tests.
+ */
+class WifiApIfaceHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+   public:
+    virtual void SetUp() override {
+        wifi_ap_iface_ = IWifiApIface::castFrom(getWifiApIface());
+        ASSERT_NE(nullptr, wifi_ap_iface_.get());
+    }
+
+    virtual void TearDown() override {
+        stopWifi();
+    }
+
+   protected:
+    sp<IWifiApIface> wifi_ap_iface_;
+};
+
+/*
+ * SetMacAddress:
+ * Ensures that calls to set MAC address will return a success status
+ * code.
+ */
+TEST_F(WifiApIfaceHidlTest, SetMacAddress) {
+    const hidl_array<uint8_t, 6> kMac{{0x12, 0x22, 0x33, 0x52, 0x10, 0x41}};
+    EXPECT_EQ(WifiStatusCode::SUCCESS,
+              HIDL_INVOKE(wifi_ap_iface_, setMacAddress, kMac).code);
+}
+
+/*
+ * GetFactoryMacAddress:
+ * Ensures that calls to get factory MAC address will retrieve a non-zero MAC
+ * and return a success status code.
+ */
+TEST_F(WifiApIfaceHidlTest, GetFactoryMacAddress) {
+    std::pair<WifiStatus, hidl_array<uint8_t, 6> > status_and_mac =
+        HIDL_INVOKE(wifi_ap_iface_, getFactoryMacAddress);
+    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_mac.first.code);
+    hidl_array<uint8_t, 6> all_zero{};
+    EXPECT_NE(all_zero, status_and_mac.second);
+}
diff --git a/wifi/1.4/vts/functional/wifi_sta_iface_hidl_test.cpp b/wifi/1.4/vts/functional/wifi_sta_iface_hidl_test.cpp
new file mode 100644
index 0000000..ec4b2c9
--- /dev/null
+++ b/wifi/1.4/vts/functional/wifi_sta_iface_hidl_test.cpp
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Staache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include <android/hardware/wifi/1.4/IWifiStaIface.h>
+
+#include <VtsHalHidlTargetTestBase.h>
+
+#include "wifi_hidl_call_util.h"
+#include "wifi_hidl_test_utils.h"
+
+using ::android::sp;
+using ::android::hardware::hidl_array;
+using ::android::hardware::wifi::V1_0::WifiStatus;
+using ::android::hardware::wifi::V1_0::WifiStatusCode;
+using ::android::hardware::wifi::V1_4::IWifiStaIface;
+
+/**
+ * Fixture to use for all STA Iface HIDL interface tests.
+ */
+class WifiStaIfaceHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+   public:
+    virtual void SetUp() override {
+        wifi_sta_iface_ = IWifiStaIface::castFrom(getWifiStaIface());
+        ASSERT_NE(nullptr, wifi_sta_iface_.get());
+    }
+
+    virtual void TearDown() override { stopWifi(); }
+
+   protected:
+    sp<IWifiStaIface> wifi_sta_iface_;
+};
+
+/*
+ * GetCapabilities_1_4
+ */
+TEST_F(WifiStaIfaceHidlTest, GetCapabilities_1_4) {
+    configureChipForIfaceType(IfaceType::STA, true);
+
+    const auto& status_and_caps =
+        HIDL_INVOKE(wifi_sta_iface_, getCapabilities_1_4);
+    if (status_and_caps.first.code != WifiStatusCode::SUCCESS) {
+        EXPECT_EQ(WifiStatusCode::ERROR_NOT_SUPPORTED,
+                  status_and_caps.first.code);
+        return;
+    }
+    EXPECT_NE(0u, status_and_caps.second);
+}
diff --git a/wifi/supplicant/1.3/Android.bp b/wifi/supplicant/1.3/Android.bp
new file mode 100644
index 0000000..3f20531
--- /dev/null
+++ b/wifi/supplicant/1.3/Android.bp
@@ -0,0 +1,23 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.wifi.supplicant@1.3",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "ISupplicant.hal",
+        "ISupplicantStaIface.hal",
+        "ISupplicantStaIfaceCallback.hal",
+        "ISupplicantStaNetwork.hal",
+    ],
+    interfaces: [
+        "android.hardware.wifi.supplicant@1.0",
+        "android.hardware.wifi.supplicant@1.1",
+        "android.hardware.wifi.supplicant@1.2",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
diff --git a/wifi/supplicant/1.3/ISupplicant.hal b/wifi/supplicant/1.3/ISupplicant.hal
new file mode 100644
index 0000000..246ce1f
--- /dev/null
+++ b/wifi/supplicant/1.3/ISupplicant.hal
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.supplicant@1.3;
+
+import @1.2::ISupplicant;
+
+/**
+ * Interface exposed by the supplicant HIDL service registered
+ * with the hardware service manager.
+ * This is the root level object for any the supplicant interactions.
+ * To use 1.3 features you must cast specific interfaces returned from the
+ * 1.2 HAL. For example V1_2::ISupplicant::addIface() adds V1_2::ISupplicantIface,
+ * which can be cast to V1_3::ISupplicantStaIface.
+ */
+interface ISupplicant extends @1.2::ISupplicant {};
diff --git a/wifi/supplicant/1.3/ISupplicantStaIface.hal b/wifi/supplicant/1.3/ISupplicantStaIface.hal
new file mode 100644
index 0000000..bfd8946
--- /dev/null
+++ b/wifi/supplicant/1.3/ISupplicantStaIface.hal
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.supplicant@1.3;
+
+import @1.0::SupplicantStatus;
+import @1.2::ISupplicantStaIface;
+import ISupplicantStaIfaceCallback;
+
+/**
+ * Interface exposed by the supplicant for each station mode network
+ * interface (e.g wlan0) it controls.
+ */
+interface ISupplicantStaIface extends @1.2::ISupplicantStaIface {
+    /**
+     * Register for callbacks from this interface.
+     *
+     * These callbacks are invoked for events that are specific to this interface.
+     * Registration of multiple callback objects is supported. These objects must
+     * be automatically deleted when the corresponding client process is dead or
+     * if this interface is removed.
+     *
+     * @param callback An instance of the |ISupplicantStaIfaceCallback| HIDL
+     *        interface object.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
+     *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
+     */
+    registerCallback_1_3(ISupplicantStaIfaceCallback callback)
+        generates (SupplicantStatus status);
+
+    /**
+     * Get Connection capabilities
+     *
+     * @return status Status of the operation, and connection capabilities.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
+     */
+    getConnectionCapabilities()
+        generates (SupplicantStatus status, ConnectionCapabilities capabilities);
+
+    /**
+     * Get wpa driver capabilities.
+     *
+     * @return status Status of the operation, and a bitmap of wpa driver features.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
+     */
+    getWpaDriverCapabilities() generates (SupplicantStatus status,
+        bitfield<WpaDriverCapabilitiesMask> driverCapabilitiesMask);
+
+    /**
+     * Set MBO cellular data status.
+     *
+     * @param available true means cellular data available, false otherwise.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     */
+    setMboCellularDataStatus(bool available) generates (SupplicantStatus status);
+};
diff --git a/wifi/supplicant/1.3/ISupplicantStaIfaceCallback.hal b/wifi/supplicant/1.3/ISupplicantStaIfaceCallback.hal
new file mode 100644
index 0000000..107e0fc
--- /dev/null
+++ b/wifi/supplicant/1.3/ISupplicantStaIfaceCallback.hal
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.supplicant@1.3;
+
+import @1.2::ISupplicantStaIfaceCallback;
+
+/**
+ * Callback Interface exposed by the supplicant service
+ * for each station mode interface (ISupplicantStaIface).
+ *
+ * Clients need to host an instance of this HIDL interface object and
+ * pass a reference of the object to the supplicant via the
+ * corresponding |ISupplicantStaIface.registerCallback_1_3| method.
+ */
+interface ISupplicantStaIfaceCallback extends @1.2::ISupplicantStaIfaceCallback {
+    /**
+     * Indicates PMK cache added event.
+     *
+     * @param expirationTimeInSec expiration time in seconds
+     * @param serializedEntry is serialized PMK cache entry, the content is
+     *              opaque for the framework and depends on the native implementation.
+     */
+    oneway onPmkCacheAdded(int64_t expirationTimeInSec, vec<uint8_t> serializedEntry);
+};
diff --git a/wifi/supplicant/1.3/ISupplicantStaNetwork.hal b/wifi/supplicant/1.3/ISupplicantStaNetwork.hal
new file mode 100644
index 0000000..ab08cff
--- /dev/null
+++ b/wifi/supplicant/1.3/ISupplicantStaNetwork.hal
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.supplicant@1.3;
+
+import @1.0::SupplicantStatus;
+import @1.2::ISupplicantStaNetwork;
+
+/**
+ * Interface exposed by the supplicant for each station mode network
+ * configuration it controls.
+ */
+interface ISupplicantStaNetwork extends @1.2::ISupplicantStaNetwork {
+    /**
+     * Set OCSP (Online Certificate Status Protocol) type for this network.
+     *
+     * @param ocspType value to set.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_ARGS_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|
+     */
+    setOcsp(OcspType ocspType) generates (SupplicantStatus status);
+
+    /**
+     * Get OCSP (Online Certificate Status Protocol) type for this network.
+     *
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_ARGS_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|
+     * @return ocspType ocsp type.
+     */
+    getOcsp() generates (SupplicantStatus status, OcspType ocspType);
+
+    /**
+     * Add a PMK into supplicant PMK cache.
+     *
+     * @param serializedEntry is serialized PMK cache entry, the content is
+     *              opaque for the framework and depends on the native implementation.
+     * @return status Status of the operation
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_ARGS_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|
+     */
+    setPmkCache(vec<uint8_t> serializedEntry) generates (SupplicantStatus status);
+};
diff --git a/wifi/supplicant/1.3/types.hal b/wifi/supplicant/1.3/types.hal
new file mode 100644
index 0000000..4e01ab1
--- /dev/null
+++ b/wifi/supplicant/1.3/types.hal
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.supplicant@1.3;
+
+/**
+ * OcspType: The type of OCSP request.
+ */
+enum OcspType : uint32_t {
+    NONE,
+    REQUEST_CERT_STATUS,
+    REQUIRE_CERT_STATUS,
+    REQUIRE_ALL_CERTS_STATUS,
+};
+
+/**
+ * Wifi Technologies
+ */
+enum WifiTechnology : uint32_t {
+    UNKNOWN = 0,
+    /**
+     * For 802.11a/b/g
+     */
+    LEGACY = 1,
+    /**
+     * For 802.11n
+     */
+    HT = 2,
+    /**
+     * For 802.11ac
+     */
+    VHT = 3,
+    /**
+     * For 802.11ax
+     */
+    HE = 4,
+};
+
+/**
+ * Connection Capabilities.
+ */
+struct ConnectionCapabilities {
+    /**
+     * Wifi Technology
+     */
+    WifiTechnology technology;
+};
+
+/**
+ * WPA Driver capability.
+ */
+enum WpaDriverCapabilitiesMask : uint32_t {
+    /**
+     * Multi Band Operation.
+     */
+    MBO = 1 << 0,
+    /**
+     * Optimized Connectivity Experience.
+     */
+    OCE = 1 << 1,
+};
diff --git a/wifi/1.3/default/OWNERS b/wifi/supplicant/1.3/vts/OWNERS
similarity index 100%
copy from wifi/1.3/default/OWNERS
copy to wifi/supplicant/1.3/vts/OWNERS
diff --git a/wifi/supplicant/1.3/vts/functional/Android.bp b/wifi/supplicant/1.3/vts/functional/Android.bp
new file mode 100644
index 0000000..abb8600
--- /dev/null
+++ b/wifi/supplicant/1.3/vts/functional/Android.bp
@@ -0,0 +1,65 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_static {
+    name: "VtsHalWifiSupplicantV1_3TargetTestUtil",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: ["supplicant_hidl_test_utils_1_3.cpp"],
+    export_include_dirs: [
+        "."
+    ],
+    static_libs: [
+        "VtsHalWifiV1_0TargetTestUtil",
+        "VtsHalWifiSupplicantV1_0TargetTestUtil",
+        "VtsHalWifiSupplicantV1_1TargetTestUtil",
+        "VtsHalWifiSupplicantV1_2TargetTestUtil",
+        "android.hardware.wifi.supplicant@1.0",
+        "android.hardware.wifi.supplicant@1.1",
+        "android.hardware.wifi.supplicant@1.2",
+        "android.hardware.wifi.supplicant@1.3",
+        "android.hardware.wifi@1.0",
+        "libgmock",
+        "libwifi-system",
+        "libwifi-system-iface",
+    ],
+}
+
+cc_test {
+    name: "VtsHalWifiSupplicantV1_3TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: [
+        "VtsHalWifiSupplicantV1_3TargetTest.cpp",
+        "supplicant_sta_iface_hidl_test.cpp",
+        "supplicant_sta_network_hidl_test.cpp",
+    ],
+    static_libs: [
+        "VtsHalWifiV1_0TargetTestUtil",
+        "VtsHalWifiSupplicantV1_0TargetTestUtil",
+        "VtsHalWifiSupplicantV1_1TargetTestUtil",
+        "VtsHalWifiSupplicantV1_2TargetTestUtil",
+        "VtsHalWifiSupplicantV1_3TargetTestUtil",
+        "android.hardware.wifi.supplicant@1.0",
+        "android.hardware.wifi.supplicant@1.1",
+        "android.hardware.wifi.supplicant@1.2",
+        "android.hardware.wifi.supplicant@1.3",
+        "android.hardware.wifi@1.0",
+        "android.hardware.wifi@1.1",
+        "libgmock",
+        "libwifi-system",
+        "libwifi-system-iface",
+    ],
+    test_suites: ["general-tests"],
+}
diff --git a/wifi/supplicant/1.3/vts/functional/VtsHalWifiSupplicantV1_3TargetTest.cpp b/wifi/supplicant/1.3/vts/functional/VtsHalWifiSupplicantV1_3TargetTest.cpp
new file mode 100644
index 0000000..4dbb64e
--- /dev/null
+++ b/wifi/supplicant/1.3/vts/functional/VtsHalWifiSupplicantV1_3TargetTest.cpp
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android/hardware/wifi/1.1/IWifi.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicant.h>
+
+#include "supplicant_hidl_test_utils.h"
+#include "wifi_hidl_test_utils.h"
+
+class WifiSupplicantHidlEnvironment_1_3 : public WifiSupplicantHidlEnvironment {
+   public:
+    // get the test environment singleton
+    static WifiSupplicantHidlEnvironment_1_3* Instance() {
+        static WifiSupplicantHidlEnvironment_1_3* instance =
+            new WifiSupplicantHidlEnvironment_1_3;
+        return instance;
+    }
+    virtual void registerTestServices() override {
+        registerTestService<::android::hardware::wifi::V1_0::IWifi>();
+        registerTestService<::android::hardware::wifi::V1_1::IWifi>();
+        registerTestService<
+            ::android::hardware::wifi::supplicant::V1_0::ISupplicant>();
+        registerTestService<
+            ::android::hardware::wifi::supplicant::V1_1::ISupplicant>();
+        registerTestService<
+            ::android::hardware::wifi::supplicant::V1_2::ISupplicant>();
+        registerTestService<
+            ::android::hardware::wifi::supplicant::V1_3::ISupplicant>();
+    }
+
+   private:
+    WifiSupplicantHidlEnvironment_1_3() {}
+};
+
+WifiSupplicantHidlEnvironment* gEnv =
+    WifiSupplicantHidlEnvironment_1_3::Instance();
+
+int main(int argc, char** argv) {
+    ::testing::AddGlobalTestEnvironment(gEnv);
+    ::testing::InitGoogleTest(&argc, argv);
+    gEnv->init(&argc, argv);
+    int status = gEnv->initFromOptions(argc, argv);
+    if (status == 0) {
+        int status = RUN_ALL_TESTS();
+        LOG(INFO) << "Test result = " << status;
+    }
+    return status;
+}
diff --git a/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.cpp b/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.cpp
new file mode 100644
index 0000000..308808d
--- /dev/null
+++ b/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.cpp
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android-base/logging.h>
+
+#include "supplicant_hidl_test_utils.h"
+#include "supplicant_hidl_test_utils_1_3.h"
+
+using ::android::sp;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaIface;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaNetwork;
+
+sp<ISupplicantStaIface> getSupplicantStaIface_1_3() {
+    return ISupplicantStaIface::castFrom(getSupplicantStaIface());
+}
+
+sp<ISupplicantStaNetwork> createSupplicantStaNetwork_1_3() {
+    return ISupplicantStaNetwork::castFrom(createSupplicantStaNetwork());
+}
diff --git a/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.h b/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.h
new file mode 100644
index 0000000..39dbb8f
--- /dev/null
+++ b/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SUPPLICANT_HIDL_TEST_UTILS_1_3_H
+#define SUPPLICANT_HIDL_TEST_UTILS_1_3_H
+
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaIface.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaNetwork.h>
+
+android::sp<android::hardware::wifi::supplicant::V1_3::ISupplicantStaIface>
+getSupplicantStaIface_1_3();
+android::sp<android::hardware::wifi::supplicant::V1_3::ISupplicantStaNetwork>
+createSupplicantStaNetwork_1_3();
+
+#endif /* SUPPLICANT_HIDL_TEST_UTILS_1_3_H */
diff --git a/wifi/supplicant/1.3/vts/functional/supplicant_sta_iface_hidl_test.cpp b/wifi/supplicant/1.3/vts/functional/supplicant_sta_iface_hidl_test.cpp
new file mode 100644
index 0000000..2cf5881
--- /dev/null
+++ b/wifi/supplicant/1.3/vts/functional/supplicant_sta_iface_hidl_test.cpp
@@ -0,0 +1,229 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android/hardware/wifi/supplicant/1.2/types.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaIface.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaIfaceCallback.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaNetwork.h>
+#include <android/hardware/wifi/supplicant/1.3/types.h>
+#include <hidl/HidlSupport.h>
+#include <hidl/Status.h>
+
+#include "supplicant_hidl_test_utils.h"
+#include "supplicant_hidl_test_utils_1_3.h"
+
+using ::android::sp;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatus;
+using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatusCode;
+using ::android::hardware::wifi::supplicant::V1_2::DppAkm;
+using ::android::hardware::wifi::supplicant::V1_2::DppFailureCode;
+using ::android::hardware::wifi::supplicant::V1_2::DppProgressCode;
+using ::android::hardware::wifi::supplicant::V1_3::ConnectionCapabilities;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaIface;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaIfaceCallback;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaNetwork;
+using ::android::hardware::wifi::supplicant::V1_3::WpaDriverCapabilitiesMask;
+
+class SupplicantStaIfaceHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+   public:
+    virtual void SetUp() override {
+        startSupplicantAndWaitForHidlService();
+        EXPECT_TRUE(turnOnExcessiveLogging());
+        sta_iface_ = getSupplicantStaIface_1_3();
+        ASSERT_NE(sta_iface_.get(), nullptr);
+    }
+
+    virtual void TearDown() override { stopSupplicant(); }
+
+    int64_t pmkCacheExpirationTimeInSec;
+    std::vector<uint8_t> serializedPmkCacheEntry;
+
+   protected:
+    // ISupplicantStaIface object used for all tests in this fixture.
+    sp<ISupplicantStaIface> sta_iface_;
+};
+
+class IfaceCallback : public ISupplicantStaIfaceCallback {
+    Return<void> onNetworkAdded(uint32_t /* id */) override { return Void(); }
+    Return<void> onNetworkRemoved(uint32_t /* id */) override { return Void(); }
+    Return<void> onStateChanged(
+        ISupplicantStaIfaceCallback::State /* newState */,
+        const hidl_array<uint8_t, 6>& /*bssid */, uint32_t /* id */,
+        const hidl_vec<uint8_t>& /* ssid */) override {
+        return Void();
+    }
+    Return<void> onAnqpQueryDone(
+        const hidl_array<uint8_t, 6>& /* bssid */,
+        const ISupplicantStaIfaceCallback::AnqpData& /* data */,
+        const ISupplicantStaIfaceCallback::Hs20AnqpData& /* hs20Data */)
+        override {
+        return Void();
+    }
+    virtual Return<void> onHs20IconQueryDone(
+        const hidl_array<uint8_t, 6>& /* bssid */,
+        const hidl_string& /* fileName */,
+        const hidl_vec<uint8_t>& /* data */) override {
+        return Void();
+    }
+    virtual Return<void> onHs20SubscriptionRemediation(
+        const hidl_array<uint8_t, 6>& /* bssid */,
+        ISupplicantStaIfaceCallback::OsuMethod /* osuMethod */,
+        const hidl_string& /* url*/) override {
+        return Void();
+    }
+    Return<void> onHs20DeauthImminentNotice(
+        const hidl_array<uint8_t, 6>& /* bssid */, uint32_t /* reasonCode */,
+        uint32_t /* reAuthDelayInSec */,
+        const hidl_string& /* url */) override {
+        return Void();
+    }
+    Return<void> onDisconnected(const hidl_array<uint8_t, 6>& /* bssid */,
+                                bool /* locallyGenerated */,
+                                ISupplicantStaIfaceCallback::ReasonCode
+                                /* reasonCode */) override {
+        return Void();
+    }
+    Return<void> onAssociationRejected(
+        const hidl_array<uint8_t, 6>& /* bssid */,
+        ISupplicantStaIfaceCallback::StatusCode /* statusCode */,
+        bool /*timedOut */) override {
+        return Void();
+    }
+    Return<void> onAuthenticationTimeout(
+        const hidl_array<uint8_t, 6>& /* bssid */) override {
+        return Void();
+    }
+    Return<void> onBssidChanged(
+        ISupplicantStaIfaceCallback::BssidChangeReason /* reason */,
+        const hidl_array<uint8_t, 6>& /* bssid */) override {
+        return Void();
+    }
+    Return<void> onEapFailure() override { return Void(); }
+    Return<void> onEapFailure_1_1(
+        ISupplicantStaIfaceCallback::EapErrorCode /* eapErrorCode */) override {
+        return Void();
+    }
+    Return<void> onWpsEventSuccess() override { return Void(); }
+    Return<void> onWpsEventFail(
+        const hidl_array<uint8_t, 6>& /* bssid */,
+        ISupplicantStaIfaceCallback::WpsConfigError /* configError */,
+        ISupplicantStaIfaceCallback::WpsErrorIndication /* errorInd */)
+        override {
+        return Void();
+    }
+    Return<void> onWpsEventPbcOverlap() override { return Void(); }
+    Return<void> onExtRadioWorkStart(uint32_t /* id */) override {
+        return Void();
+    }
+    Return<void> onExtRadioWorkTimeout(uint32_t /* id*/) override {
+        return Void();
+    }
+    Return<void> onDppSuccessConfigReceived(
+        const hidl_vec<uint8_t>& /* ssid */, const hidl_string& /* password */,
+        const hidl_array<uint8_t, 32>& /* psk */,
+        DppAkm /* securityAkm */) override {
+        return Void();
+    }
+    Return<void> onDppSuccessConfigSent() override { return Void(); }
+    Return<void> onDppProgress(DppProgressCode /* code */) override {
+        return Void();
+    }
+    Return<void> onDppFailure(DppFailureCode /* code */) override {
+        return Void();
+    }
+    Return<void> onPmkCacheAdded(
+        int64_t /* expirationTimeInSec */,
+        const hidl_vec<uint8_t>& /* serializedEntry */) override {
+        return Void();
+    }
+};
+
+class IfacePmkCacheCallback : public IfaceCallback {
+    SupplicantStaIfaceHidlTest& parent_;
+    Return<void> onPmkCacheAdded(
+        int64_t expirationTimeInSec,
+        const hidl_vec<uint8_t>& serializedEntry) override {
+        parent_.pmkCacheExpirationTimeInSec = expirationTimeInSec;
+        parent_.serializedPmkCacheEntry = serializedEntry;
+        return Void();
+    }
+
+   public:
+    IfacePmkCacheCallback(SupplicantStaIfaceHidlTest& parent)
+        : parent_(parent) {}
+};
+
+/*
+ * RegisterCallback_1_3
+ */
+TEST_F(SupplicantStaIfaceHidlTest, RegisterCallback_1_3) {
+    sta_iface_->registerCallback_1_3(
+        new IfaceCallback(), [](const SupplicantStatus& status) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
+}
+
+/*
+ * getConnectionCapabilities
+ */
+TEST_F(SupplicantStaIfaceHidlTest, GetConnectionCapabilities) {
+    sta_iface_->getConnectionCapabilities(
+        [&](const SupplicantStatus& status,
+            ConnectionCapabilities /* capabilities */) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
+}
+
+/*
+ * GetWpaDriverCapabilities
+ */
+TEST_F(SupplicantStaIfaceHidlTest, GetWpaDriverCapabilities) {
+    sta_iface_->getWpaDriverCapabilities(
+        [&](const SupplicantStatus& status, uint32_t) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
+}
+
+/*
+ * SetMboCellularDataStatus
+ */
+TEST_F(SupplicantStaIfaceHidlTest, SetMboCellularDataStatus) {
+    uint32_t driverCapMask = 0;
+
+    // Get MBO support from the device.
+    sta_iface_->getWpaDriverCapabilities(
+        [&](const SupplicantStatus& status, uint32_t driverCapMaskInternal) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+
+            driverCapMask = driverCapMaskInternal;
+        });
+
+    SupplicantStatusCode expectedStatusCode =
+        (driverCapMask & WpaDriverCapabilitiesMask::MBO)
+            ? SupplicantStatusCode::SUCCESS
+            : SupplicantStatusCode::FAILURE_UNKNOWN;
+
+    sta_iface_->setMboCellularDataStatus(
+        true, [expectedStatusCode](const SupplicantStatus& status) {
+            EXPECT_EQ(expectedStatusCode, status.code);
+        });
+}
diff --git a/wifi/supplicant/1.3/vts/functional/supplicant_sta_network_hidl_test.cpp b/wifi/supplicant/1.3/vts/functional/supplicant_sta_network_hidl_test.cpp
new file mode 100644
index 0000000..07bc9d8
--- /dev/null
+++ b/wifi/supplicant/1.3/vts/functional/supplicant_sta_network_hidl_test.cpp
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaNetwork.h>
+
+#include "supplicant_hidl_test_utils.h"
+#include "supplicant_hidl_test_utils_1_3.h"
+
+using ::android::sp;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatus;
+using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatusCode;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaNetwork;
+using ::android::hardware::wifi::supplicant::V1_3::OcspType;
+namespace {
+constexpr OcspType kTestOcspType = OcspType::REQUEST_CERT_STATUS;
+constexpr OcspType kTestInvalidOcspType = (OcspType)-1;
+}  // namespace
+
+class SupplicantStaNetworkHidlTest
+    : public ::testing::VtsHalHidlTargetTestBase {
+   public:
+    virtual void SetUp() override {
+        startSupplicantAndWaitForHidlService();
+        EXPECT_TRUE(turnOnExcessiveLogging());
+        sta_network_ = createSupplicantStaNetwork_1_3();
+        ASSERT_NE(sta_network_.get(), nullptr);
+    }
+
+    virtual void TearDown() override { stopSupplicant(); }
+
+   protected:
+    // ISupplicantStaNetwork object used for all tests in this fixture.
+    sp<ISupplicantStaNetwork> sta_network_;
+};
+
+/*
+ * SetGetOcsp
+ */
+TEST_F(SupplicantStaNetworkHidlTest, SetGetOcsp) {
+    OcspType testOcspType = kTestOcspType;
+
+    sta_network_->setOcsp(testOcspType, [](const SupplicantStatus &status) {
+        EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+    });
+
+    sta_network_->setOcsp(
+        kTestInvalidOcspType, [](const SupplicantStatus &status) {
+            EXPECT_EQ(SupplicantStatusCode::FAILURE_ARGS_INVALID, status.code);
+        });
+
+    sta_network_->getOcsp(
+        [testOcspType](const SupplicantStatus &status, OcspType ocspType) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+            EXPECT_EQ(testOcspType, ocspType);
+        });
+}
+
+/*
+ * SetPmkCacheEntry
+ */
+TEST_F(SupplicantStaNetworkHidlTest, SetPmkCache) {
+    uint8_t bytes[128] = {0};
+    std::vector<uint8_t> serializedEntry(bytes, bytes + sizeof(bytes));
+
+    sta_network_->setPmkCache(
+        serializedEntry, [](const SupplicantStatus &status) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
+}