diff --git a/camera/common/aidl/Android.bp b/camera/common/aidl/Android.bp
new file mode 100644
index 0000000..eca70aa
--- /dev/null
+++ b/camera/common/aidl/Android.bp
@@ -0,0 +1,19 @@
+aidl_interface {
+    name: "android.hardware.camera.common",
+    vendor_available: true,
+    srcs: ["android/hardware/camera/common/*.aidl"],
+    stability: "vintf",
+    backend: {
+        cpp: {
+            enabled: false,
+        },
+        java: {
+            enabled: false,
+        },
+        ndk: {
+            vndk: {
+                enabled: true,
+            },
+        },
+    },
+}
diff --git a/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/CameraDeviceStatus.aidl b/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/CameraDeviceStatus.aidl
new file mode 100644
index 0000000..a53a914
--- /dev/null
+++ b/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/CameraDeviceStatus.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.camera.common;
+@Backing(type="int") @VintfStability
+enum CameraDeviceStatus {
+  NOT_PRESENT = 0,
+  PRESENT = 1,
+  ENUMERATING = 2,
+}
diff --git a/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/CameraMetadataType.aidl b/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/CameraMetadataType.aidl
new file mode 100644
index 0000000..287dea3
--- /dev/null
+++ b/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/CameraMetadataType.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.camera.common;
+@Backing(type="int") @VintfStability
+enum CameraMetadataType {
+  BYTE = 0,
+  INT32 = 1,
+  FLOAT = 2,
+  INT64 = 3,
+  DOUBLE = 4,
+  RATIONAL = 5,
+}
diff --git a/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/CameraResourceCost.aidl b/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/CameraResourceCost.aidl
new file mode 100644
index 0000000..467f451
--- /dev/null
+++ b/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/CameraResourceCost.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.camera.common;
+@VintfStability
+parcelable CameraResourceCost {
+  int resourceCost;
+  String[] conflictingDevices;
+}
diff --git a/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/Status.aidl b/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/Status.aidl
new file mode 100644
index 0000000..e1ec189
--- /dev/null
+++ b/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/Status.aidl
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.camera.common;
+@Backing(type="int") @VintfStability
+enum Status {
+  OK = 0,
+  ILLEGAL_ARGUMENT = 1,
+  CAMERA_IN_USE = 2,
+  MAX_CAMERAS_IN_USE = 3,
+  METHOD_NOT_SUPPORTED = 4,
+  OPERATION_NOT_SUPPORTED = 5,
+  CAMERA_DISCONNECTED = 6,
+  INTERNAL_ERROR = 7,
+}
diff --git a/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/TagBoundaryId.aidl b/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/TagBoundaryId.aidl
new file mode 100644
index 0000000..2c6b500
--- /dev/null
+++ b/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/TagBoundaryId.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.camera.common;
+@Backing(type="long") @VintfStability
+enum TagBoundaryId {
+  AOSP = 0,
+  VENDOR = -2147483648,
+}
diff --git a/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/TorchModeStatus.aidl b/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/TorchModeStatus.aidl
new file mode 100644
index 0000000..cb1a2ae
--- /dev/null
+++ b/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/TorchModeStatus.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.camera.common;
+@Backing(type="int") @VintfStability
+enum TorchModeStatus {
+  NOT_AVAILABLE = 0,
+  AVAILABLE_OFF = 1,
+  AVAILABLE_ON = 2,
+}
diff --git a/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/VendorTag.aidl b/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/VendorTag.aidl
new file mode 100644
index 0000000..b8b4ef4
--- /dev/null
+++ b/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/VendorTag.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.camera.common;
+@VintfStability
+parcelable VendorTag {
+  int tagId;
+  String tagName;
+  android.hardware.camera.common.CameraMetadataType tagType;
+}
diff --git a/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/VendorTagSection.aidl b/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/VendorTagSection.aidl
new file mode 100644
index 0000000..140fba4
--- /dev/null
+++ b/camera/common/aidl/aidl_api/android.hardware.camera.common/current/android/hardware/camera/common/VendorTagSection.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.camera.common;
+@VintfStability
+parcelable VendorTagSection {
+  String sectionName;
+  android.hardware.camera.common.VendorTag[] tags;
+}
diff --git a/camera/common/aidl/android/hardware/camera/common/CameraDeviceStatus.aidl b/camera/common/aidl/android/hardware/camera/common/CameraDeviceStatus.aidl
new file mode 100644
index 0000000..0e88ea8
--- /dev/null
+++ b/camera/common/aidl/android/hardware/camera/common/CameraDeviceStatus.aidl
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2021 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.camera.common;
+
+/**
+ * CameraDeviceStatus
+ *
+ * The current status of a camera device, as sent by a camera provider HAL
+ * through the ICameraProviderCallback::cameraDeviceStatusChange() call.
+ *
+ * At startup, the camera service must assume all internal camera devices listed
+ * by ICameraProvider::getCameraIdList() are in the PRESENT state. The provider
+ * must invoke ICameraProviderCallback::cameraDeviceStatusChange to inform the
+ * service of any initially NOT_PRESENT internal devices, and of any PRESENT
+ * external camera devices, as soon as the camera service has called
+ * ICameraProvider::setCallback().
+ *
+ * Allowed state transitions:
+ *      PRESENT            -> NOT_PRESENT
+ *      NOT_PRESENT        -> ENUMERATING
+ *      NOT_PRESENT        -> PRESENT
+ *      ENUMERATING        -> PRESENT
+ *      ENUMERATING        -> NOT_PRESENT
+ */
+@VintfStability
+@Backing(type="int")
+enum CameraDeviceStatus {
+    /**
+     * The camera device is not currently connected, and trying to reference it
+     * in provider method calls must return status code ILLEGAL_ARGUMENT.
+     *
+     */
+    NOT_PRESENT = 0,
+    /**
+     * The camera device is connected, and opening it is possible, as long as
+     * sufficient resources are available.
+     *
+     * By default, the framework must assume all devices returned by
+     * ICameraProvider::getCameraIdList() are in this state.
+     */
+    PRESENT = 1,
+    /**
+     * The camera device is connected, but it is undergoing enumeration and
+     * startup, and so opening the device must return CAMERA_IN_USE.
+     *
+     * Attempting to call ICameraProvider::getCameraCharacteristics() must
+     * succeed, however.
+     */
+    ENUMERATING = 2,
+}
diff --git a/camera/common/aidl/android/hardware/camera/common/CameraMetadataType.aidl b/camera/common/aidl/android/hardware/camera/common/CameraMetadataType.aidl
new file mode 100644
index 0000000..522bf9c
--- /dev/null
+++ b/camera/common/aidl/android/hardware/camera/common/CameraMetadataType.aidl
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2021 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.camera.common;
+
+/**
+ * Camera metadata type - duplicated from VNDK libcamera_metadata for vendor tag
+ * definitions.
+ */
+@VintfStability
+@Backing(type="int")
+enum CameraMetadataType {
+    BYTE = 0,
+    INT32 = 1,
+    FLOAT = 2,
+    INT64 = 3,
+    DOUBLE = 4,
+    RATIONAL = 5,
+}
diff --git a/camera/common/aidl/android/hardware/camera/common/CameraResourceCost.aidl b/camera/common/aidl/android/hardware/camera/common/CameraResourceCost.aidl
new file mode 100644
index 0000000..a471c99
--- /dev/null
+++ b/camera/common/aidl/android/hardware/camera/common/CameraResourceCost.aidl
@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) 2021 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.camera.common;
+
+/**
+ * CameraResourceCost:
+ *
+ * Structure defining the abstract resource cost of opening a camera device,
+ * and any usage conflicts between multiple camera devices.
+ *
+ * Obtainable via ICameraDevice::getResourceCost()
+ */
+@VintfStability
+parcelable CameraResourceCost {
+    /**
+     * The total resource "cost" of using this camera, represented as an integer
+     * value in the range [0, 100] where 100 represents total usage of the
+     * shared resource that is the limiting bottleneck of the camera subsystem.
+     * This may be a very rough estimate, and is used as a hint to the camera
+     * service to determine when to disallow multiple applications from
+     * simultaneously opening different cameras advertised by the camera
+     * service.
+     *
+     * The camera service must be able to simultaneously open and use any
+     * combination of camera devices exposed by the HAL where the sum of
+     * the resource costs of these cameras is <= 100. For determining cost,
+     * each camera device must be assumed to be configured and operating at
+     * the maximally resource-consuming framerate and stream size settings
+     * available in the configuration settings exposed for that device through
+     * the camera metadata.
+     *
+     * The camera service may still attempt to simultaneously open combinations
+     * of camera devices with a total resource cost > 100. This may succeed or
+     * fail. If this succeeds, combinations of configurations that are not
+     * supported due to resource constraints from having multiple open devices
+     * must fail during the configure calls. If the total resource cost is <=
+     * 100, open and configure must never fail for any stream configuration
+     * settings or other device capabilities that would normally succeed for a
+     * device when it is the only open camera device.
+     *
+     * This field may be used to determine whether background applications are
+     * allowed to use this camera device while other applications are using
+     * other camera devices. Note: multiple applications must never be allowed
+     * by the camera service to simultaneously open the same camera device.
+     *
+     * Example use cases:
+     *
+     * Ex. 1: Camera Device 0 = Back Camera
+     *        Camera Device 1 = Front Camera
+     *   - Using both camera devices causes a large framerate slowdown due to
+     *     limited ISP bandwidth.
+     *
+     *   Configuration:
+     *
+     *   Camera Device 0 - resourceCost = 51
+     *                     conflicting_devices = empty
+     *   Camera Device 1 - resourceCost = 51
+     *                     conflicting_devices = empty
+     *
+     *   Result:
+     *
+     *   Since the sum of the resource costs is > 100, if a higher-priority
+     *   application has either device open, no lower-priority applications must
+     *   be allowed by the camera service to open either device. If a
+     *   lower-priority application is using a device that a higher-priority
+     *   subsequently attempts to open, the lower-priority application must be
+     *   forced to disconnect the device.
+     *
+     *   If the highest-priority application chooses, it may still attempt to
+     *   open both devices (since these devices are not listed as conflicting in
+     *   the conflicting_devices fields), but usage of these devices may fail in
+     *   the open or configure calls.
+     *
+     * Ex. 2: Camera Device 0 = Left Back Camera
+     *        Camera Device 1 = Right Back Camera
+     *        Camera Device 2 = Combined stereo camera using both right and left
+     *                          back camera sensors used by devices 0, and 1
+     *        Camera Device 3 = Front Camera
+     *   - Due to do hardware constraints, up to two cameras may be open at
+     *     once. The combined stereo camera may never be used at the same time
+     *     as either of the two back camera devices (device 0, 1), and typically
+     *     requires too much bandwidth to use at the same time as the front
+     *     camera (device 3).
+     *
+     *   Configuration:
+     *
+     *   Camera Device 0 - resourceCost = 50
+     *                     conflicting_devices = { 2 }
+     *   Camera Device 1 - resourceCost = 50
+     *                     conflicting_devices = { 2 }
+     *   Camera Device 2 - resourceCost = 100
+     *                     conflicting_devices = { 0, 1 }
+     *   Camera Device 3 - resourceCost = 50
+     *                     conflicting_devices = empty
+     *
+     *   Result:
+     *
+     *   Based on the conflicting_devices fields, the camera service guarantees
+     *   that the following sets of open devices must never be allowed: { 1, 2
+     *   }, { 0, 2 }.
+     *
+     *   Based on the resourceCost fields, if a high-priority foreground
+     *   application is using camera device 0, a background application would be
+     *   allowed to open camera device 1 or 3 (but would be forced to disconnect
+     *   it again if the foreground application opened another device).
+     *
+     *   The highest priority application may still attempt to simultaneously
+     *   open devices 0, 2, and 3, but the HAL may fail in open or configure
+     *   calls for this combination.
+     *
+     * Ex. 3: Camera Device 0 = Back Camera
+     *        Camera Device 1 = Front Camera
+     *        Camera Device 2 = Low-power Front Camera that uses the same sensor
+     *                          as device 1, but only exposes image stream
+     *                          resolutions that can be used in low-power mode
+     *  - Using both front cameras (device 1, 2) at the same time is impossible
+     *    due a shared physical sensor. Using the back and "high-power" front
+     *    camera (device 1) may be impossible for some stream configurations due
+     *    to hardware limitations, but the "low-power" front camera option may
+     *    always be used as it has special dedicated hardware.
+     *
+     *   Configuration:
+     *
+     *   Camera Device 0 - resourceCost = 100
+     *                     conflicting_devices = empty
+     *   Camera Device 1 - resourceCost = 100
+     *                     conflicting_devices = { 2 }
+     *   Camera Device 2 - resourceCost = 0
+     *                     conflicting_devices = { 1 }
+     *   Result:
+     *
+     *   Based on the conflicting_devices fields, the camera service guarantees
+     *   that the following sets of open devices must never be allowed:
+     *   { 1, 2 }.
+     *
+     *   Based on the resourceCost fields, only the highest priority application
+     *   may attempt to open both device 0 and 1 at the same time. If a
+     *   higher-priority application is not using device 1 or 2, a low-priority
+     *   background application may open device 2 (but must be forced to
+     *   disconnect it if a higher-priority application subsequently opens
+     *   device 1 or 2).
+     */
+    int resourceCost;
+    /**
+     * An array of camera device IDs indicating other devices that cannot be
+     * simultaneously opened while this camera device is in use.
+     *
+     * This field is intended to be used to indicate that this camera device
+     * is a composite of several other camera devices, or otherwise has
+     * hardware dependencies that prohibit simultaneous usage. If there are no
+     * dependencies, an empty list may be returned to indicate this.
+     *
+     * The camera service must never simultaneously open any of the devices
+     * in this list while this camera device is open.
+     *
+     */
+    String[] conflictingDevices;
+}
diff --git a/camera/common/aidl/android/hardware/camera/common/Status.aidl b/camera/common/aidl/android/hardware/camera/common/Status.aidl
new file mode 100644
index 0000000..1ea6ee8
--- /dev/null
+++ b/camera/common/aidl/android/hardware/camera/common/Status.aidl
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2021 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.camera.common;
+
+/**
+ * Common enumeration and structure definitions for all HALs under
+ * android.hardware.camera
+ *
+ *
+ * Status codes for camera HAL method service specific errors.
+ *
+ */
+@VintfStability
+@Backing(type="int")
+enum Status {
+    /**
+     * Method call succeeded
+     */
+    OK = 0,
+    /**
+     * One of the arguments to the method call is invalid. For example,
+     * the camera ID is unknown.
+     */
+    ILLEGAL_ARGUMENT = 1,
+    /**
+     * The specified camera device is already in use
+     */
+    CAMERA_IN_USE = 2,
+    /**
+     * The HAL cannot support more simultaneous cameras in use.
+     */
+    MAX_CAMERAS_IN_USE = 3,
+    /**
+     * This HAL does not support this method.
+     */
+    METHOD_NOT_SUPPORTED = 4,
+    /**
+     * The specified camera device does not support this operation.
+     */
+    OPERATION_NOT_SUPPORTED = 5,
+    /**
+     * This camera device is no longer connected or otherwise available for use
+     */
+    CAMERA_DISCONNECTED = 6,
+    /**
+     * The HAL has encountered an internal error and cannot complete the
+     * request.
+     */
+    INTERNAL_ERROR = 7,
+}
diff --git a/camera/common/aidl/android/hardware/camera/common/TagBoundaryId.aidl b/camera/common/aidl/android/hardware/camera/common/TagBoundaryId.aidl
new file mode 100644
index 0000000..f81e5b6
--- /dev/null
+++ b/camera/common/aidl/android/hardware/camera/common/TagBoundaryId.aidl
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2021 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.camera.common;
+
+@VintfStability
+@Backing(type="long")
+enum TagBoundaryId {
+    AOSP = 0x0,
+    VENDOR = 0x80000000,
+}
diff --git a/camera/common/aidl/android/hardware/camera/common/TorchModeStatus.aidl b/camera/common/aidl/android/hardware/camera/common/TorchModeStatus.aidl
new file mode 100644
index 0000000..42a8816
--- /dev/null
+++ b/camera/common/aidl/android/hardware/camera/common/TorchModeStatus.aidl
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2021 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.camera.common;
+
+/**
+ * TorchModeStatus:
+ *
+ * The current status of the torch mode on a given camera device, sent by a
+ * camera provider HAL via the ICameraProviderCallback::TorchModeStatusChange()
+ * call.
+ *
+ * The torch mode status of a camera device is applicable only when the camera
+ * device is present. The camera service must not call
+ * ICameraProvider::setTorchMode() to turn on torch mode of a camera device if
+ * the camera device is not present. At camera service startup time, the
+ * framework must assume torch modes are in the AVAILABLE_OFF state if the
+ * camera device is present and the camera characteristics entry
+ * android.flash.info.available is reported as true via
+ * ICameraProvider::getCameraCharacteristics() call. The same is assumed for
+ * external camera devices when they are initially connected.
+ *
+ * The camera service requires the following behaviors from the camera provider
+ * HAL when a camera device's status changes:
+ *
+ *  1. A previously-disconnected camera device becomes connected. After
+ *      ICameraProviderCallback::CameraDeviceStatusChange() is invoked to inform
+ *      the camera service that the camera device is present, the framework must
+ *      assume the camera device's torch mode is in AVAILABLE_OFF state if it
+ *      has a flash unit. The camera provider HAL does not need to invoke
+ *      ICameraProviderCallback::TorchModeStatusChange() unless the flash unit
+ *      is unavailable to use by ICameraProvider::setTorchMode().
+ *
+ *  2. A previously-connected camera becomes disconnected. After
+ *      ICameraProviderCallback::CameraDeviceStatusChange() is invoked to inform
+ *      the camera service that the camera device is not present, the framework
+ *      must not call ICameraProvider::setTorchMode() for the disconnected camera
+ *      device until it is connected again. The camera provider HAL does not
+ *      need to invoke ICameraProviderCallback::TorchModeStatusChange()
+ *      separately to inform that the flash unit has become NOT_AVAILABLE.
+ *
+ *  3. openCameraDevice() or openCameraDeviceVersion() is called to open a
+ *      camera device. The camera provider HAL must invoke
+ *      ICameraProviderCallback::TorchModeStatusChange() for all flash units
+ *      that have entered NOT_AVAILABLE state and can not be turned on by
+ *      calling ICameraProvider::setTorchMode() due to this open() call.
+ *      openCameraDevice() must not trigger AVAILABLE_OFF before NOT_AVAILABLE
+ *      for all flash units that have become unavailable.
+ *
+ *  4. ICameraDevice.close() is called to close a camera device. The camera
+ *      provider HAL must call ICameraProviderCallback::torchModeStatusChange()
+ *      for all flash units that have now entered the AVAILABLE_OFF state and
+ *      can be turned on by calling ICameraProvider::setTorchMode() again because
+ *      of sufficient new camera resources being freed up by this close() call.
+ *
+ *  Note that the camera service calling ICameraProvider::setTorchMode()
+ *  successfully must trigger AVAILABLE_OFF or AVAILABLE_ON callback for the
+ *  given camera device. Additionally it must trigger AVAILABLE_OFF callbacks
+ *  for other previously-on torch modes if HAL cannot keep multiple devices'
+ *  flashlights on simultaneously.
+ */
+@VintfStability
+@Backing(type="int")
+enum TorchModeStatus {
+    /**
+     * The flash unit is no longer available and the torch mode can not be
+     * turned on by calling setTorchMode(). If the torch mode was AVAILABLE_ON,
+     * the flashlight must be turned off by the provider HAL before the provider
+     * HAL calls torchModeStatusChange().
+     */
+    NOT_AVAILABLE = 0,
+    /**
+     * A torch mode has become off and is available to be turned on via
+     * ICameraProvider::setTorchMode(). This may happen in the following
+     * cases:
+     *   1. After the resources to turn on the torch mode have become available.
+     *   2. After ICameraProvider::setTorchMode() is called to turn off the torch
+     *      mode.
+     *   3. After the camera service turned on the torch mode for some other
+     *      camera device and the provider HAL had to turn off the torch modes
+     *      of other camera device(s) that were previously on, due to lack of
+     *      resources to keep them all on.
+     */
+    AVAILABLE_OFF = 1,
+    /**
+     * A torch mode has become on and is available to be turned off via
+     * ICameraProvider::setTorchMode(). This can happen only after
+     * ICameraProvider::setTorchMode() has been called to turn on the torch mode.
+     */
+    AVAILABLE_ON = 2,
+}
diff --git a/camera/common/aidl/android/hardware/camera/common/VendorTag.aidl b/camera/common/aidl/android/hardware/camera/common/VendorTag.aidl
new file mode 100644
index 0000000..1de2fbf
--- /dev/null
+++ b/camera/common/aidl/android/hardware/camera/common/VendorTag.aidl
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2021 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.camera.common;
+
+import android.hardware.camera.common.CameraMetadataType;
+
+/**
+ * A single vendor-unique metadata tag.
+ * The full name of the tag is <sectionName>.<tagName>
+ */
+@VintfStability
+parcelable VendorTag {
+    int tagId;
+    String tagName;
+    CameraMetadataType tagType;
+}
diff --git a/camera/common/aidl/android/hardware/camera/common/VendorTagSection.aidl b/camera/common/aidl/android/hardware/camera/common/VendorTagSection.aidl
new file mode 100644
index 0000000..010eebc
--- /dev/null
+++ b/camera/common/aidl/android/hardware/camera/common/VendorTagSection.aidl
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2021 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.camera.common;
+
+import android.hardware.camera.common.VendorTag;
+
+/**
+ * A set of related vendor tags.
+ */
+@VintfStability
+parcelable VendorTagSection {
+    String sectionName;
+    VendorTag[] tags;
+}