diff --git a/apex/Android.bp b/apex/Android.bp
index 42a620b..73dc264 100644
--- a/apex/Android.bp
+++ b/apex/Android.bp
@@ -41,6 +41,8 @@
 
     // Use a custom AndroidManifest.xml used for API targeting.
     androidManifest: ":com.android.media-androidManifest",
+
+    legacy_android10_support: true,
 }
 
 apex {
@@ -76,6 +78,8 @@
 
     // Use a custom AndroidManifest.xml used for API targeting.
     androidManifest: ":com.android.media.swcodec-androidManifest",
+
+    legacy_android10_support: true,
 }
 
 prebuilt_etc {
diff --git a/camera/Android.bp b/camera/Android.bp
index b288bcf..ea7259a 100644
--- a/camera/Android.bp
+++ b/camera/Android.bp
@@ -85,6 +85,7 @@
         "aidl/android/hardware/ICameraServiceProxy.aidl",
         "aidl/android/hardware/camera2/ICameraDeviceCallbacks.aidl",
         "aidl/android/hardware/camera2/ICameraDeviceUser.aidl",
+        "aidl/android/hardware/camera2/ICameraOfflineSession.aidl",
     ],
     path: "aidl",
 }
diff --git a/camera/aidl/android/hardware/camera2/ICameraDeviceUser.aidl b/camera/aidl/android/hardware/camera2/ICameraDeviceUser.aidl
index 93549e0..cdb7ac3 100644
--- a/camera/aidl/android/hardware/camera2/ICameraDeviceUser.aidl
+++ b/camera/aidl/android/hardware/camera2/ICameraDeviceUser.aidl
@@ -17,6 +17,8 @@
 package android.hardware.camera2;
 
 import android.hardware.camera2.CaptureRequest;
+import android.hardware.camera2.ICameraDeviceCallbacks;
+import android.hardware.camera2.ICameraOfflineSession;
 import android.hardware.camera2.impl.CameraMetadataNative;
 import android.hardware.camera2.params.OutputConfiguration;
 import android.hardware.camera2.params.SessionConfiguration;
@@ -177,4 +179,15 @@
       * @return the currently applied system-wide audio restriction mode
       */
     int getGlobalAudioRestriction();
+
+    /**
+     * Offline processing main entry point
+     *
+     * @param callbacks Object that will receive callbacks from offline session
+     * @param offlineOutputIds The ID of streams that needs to be preserved in offline session
+     *
+     * @return Offline session object.
+     */
+    ICameraOfflineSession switchToOffline(in ICameraDeviceCallbacks callbacks,
+            in Surface[] offlineOutputs);
 }
diff --git a/camera/aidl/android/hardware/camera2/ICameraOfflineSession.aidl b/camera/aidl/android/hardware/camera2/ICameraOfflineSession.aidl
new file mode 100644
index 0000000..ab030ab
--- /dev/null
+++ b/camera/aidl/android/hardware/camera2/ICameraOfflineSession.aidl
@@ -0,0 +1,23 @@
+/*
+ * 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.camera2;
+
+ /** @hide */
+interface ICameraOfflineSession
+{
+    void disconnect();
+}
diff --git a/camera/ndk/include/camera/NdkCameraMetadataTags.h b/camera/ndk/include/camera/NdkCameraMetadataTags.h
index 825f308..0652cbb 100644
--- a/camera/ndk/include/camera/NdkCameraMetadataTags.h
+++ b/camera/ndk/include/camera/NdkCameraMetadataTags.h
@@ -1311,7 +1311,7 @@
     /**
      * <p>List of the maximum number of regions that can be used for metering in
      * auto-exposure (AE), auto-white balance (AWB), and auto-focus (AF);
-     * this corresponds to the the maximum number of elements in
+     * this corresponds to the maximum number of elements in
      * ACAMERA_CONTROL_AE_REGIONS, ACAMERA_CONTROL_AWB_REGIONS,
      * and ACAMERA_CONTROL_AF_REGIONS.</p>
      *
diff --git a/include/soundtrigger/ISoundTrigger.h b/include/soundtrigger/ISoundTrigger.h
deleted file mode 100644
index d628c05..0000000
--- a/include/soundtrigger/ISoundTrigger.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright (C) 2014 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_ISOUNDTRIGGER_H
-#define ANDROID_HARDWARE_ISOUNDTRIGGER_H
-
-#include <utils/RefBase.h>
-#include <binder/IInterface.h>
-#include <binder/Parcel.h>
-#include <binder/IMemory.h>
-#include <system/sound_trigger.h>
-
-namespace android {
-
-class ISoundTrigger : public IInterface
-{
-public:
-    DECLARE_META_INTERFACE(SoundTrigger);
-
-    virtual void detach() = 0;
-
-    virtual status_t loadSoundModel(const sp<IMemory>& modelMemory,
-                                    sound_model_handle_t *handle) = 0;
-
-    virtual status_t unloadSoundModel(sound_model_handle_t handle) = 0;
-
-    virtual status_t startRecognition(sound_model_handle_t handle,
-                                      const sp<IMemory>& dataMemory) = 0;
-    virtual status_t stopRecognition(sound_model_handle_t handle) = 0;
-    virtual status_t getModelState(sound_model_handle_t handle) = 0;
-    virtual status_t setParameter(sound_model_handle_t handle,
-            sound_trigger_model_parameter_t param, int32_t value) = 0;
-    virtual status_t getParameter(sound_model_handle_t handle,
-            sound_trigger_model_parameter_t param, int32_t* value) = 0;
-    virtual status_t queryParameter(sound_model_handle_t handle,
-            sound_trigger_model_parameter_t param,
-            sound_trigger_model_parameter_range_t* param_range) = 0;
-};
-
-// ----------------------------------------------------------------------------
-
-class BnSoundTrigger: public BnInterface<ISoundTrigger>
-{
-public:
-    virtual status_t    onTransact( uint32_t code,
-                                    const Parcel& data,
-                                    Parcel* reply,
-                                    uint32_t flags = 0);
-};
-
-}; // namespace android
-
-#endif //ANDROID_HARDWARE_ISOUNDTRIGGER_H
diff --git a/include/soundtrigger/ISoundTriggerClient.h b/include/soundtrigger/ISoundTriggerClient.h
deleted file mode 100644
index 480429a..0000000
--- a/include/soundtrigger/ISoundTriggerClient.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * Copyright (C) 2014 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_ISOUNDTRIGGER_CLIENT_H
-#define ANDROID_HARDWARE_ISOUNDTRIGGER_CLIENT_H
-
-#include <utils/RefBase.h>
-#include <binder/IInterface.h>
-#include <binder/Parcel.h>
-
-namespace android {
-
-class ISoundTriggerClient : public IInterface
-{
-public:
-
-    DECLARE_META_INTERFACE(SoundTriggerClient);
-
-    virtual void onRecognitionEvent(const sp<IMemory>& eventMemory) = 0;
-
-    virtual void onSoundModelEvent(const sp<IMemory>& eventMemory) = 0;
-
-    virtual void onServiceStateChange(const sp<IMemory>& eventMemory) = 0;
-
-};
-
-// ----------------------------------------------------------------------------
-
-class BnSoundTriggerClient : public BnInterface<ISoundTriggerClient>
-{
-public:
-    virtual status_t    onTransact( uint32_t code,
-                                    const Parcel& data,
-                                    Parcel* reply,
-                                    uint32_t flags = 0);
-};
-
-}; // namespace android
-
-#endif //ANDROID_HARDWARE_ISOUNDTRIGGER_CLIENT_H
diff --git a/include/soundtrigger/ISoundTriggerHwService.h b/include/soundtrigger/ISoundTriggerHwService.h
deleted file mode 100644
index 1faeb0f..0000000
--- a/include/soundtrigger/ISoundTriggerHwService.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (C) 2014 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_ISOUNDTRIGGER_SERVICE_H
-#define ANDROID_HARDWARE_ISOUNDTRIGGER_SERVICE_H
-
-#include <utils/RefBase.h>
-#include <binder/IInterface.h>
-#include <binder/Parcel.h>
-#include <system/sound_trigger.h>
-
-namespace android {
-
-class ISoundTrigger;
-class ISoundTriggerClient;
-
-class ISoundTriggerHwService : public IInterface
-{
-public:
-
-    DECLARE_META_INTERFACE(SoundTriggerHwService);
-
-    virtual status_t listModules(const String16& opPackageName,
-                                 struct sound_trigger_module_descriptor *modules,
-                                 uint32_t *numModules) = 0;
-
-    virtual status_t attach(const String16& opPackageName,
-                            const sound_trigger_module_handle_t handle,
-                            const sp<ISoundTriggerClient>& client,
-                            sp<ISoundTrigger>& module) = 0;
-
-    virtual status_t setCaptureState(bool active) = 0;
-};
-
-// ----------------------------------------------------------------------------
-
-class BnSoundTriggerHwService: public BnInterface<ISoundTriggerHwService>
-{
-public:
-    virtual status_t    onTransact( uint32_t code,
-                                    const Parcel& data,
-                                    Parcel* reply,
-                                    uint32_t flags = 0);
-};
-
-}; // namespace android
-
-#endif //ANDROID_HARDWARE_ISOUNDTRIGGER_SERVICE_H
diff --git a/include/soundtrigger/OWNERS b/include/soundtrigger/OWNERS
deleted file mode 100644
index e83f6b9..0000000
--- a/include/soundtrigger/OWNERS
+++ /dev/null
@@ -1,2 +0,0 @@
-elaurent@google.com
-thorntonc@google.com
diff --git a/include/soundtrigger/SoundTrigger.h b/include/soundtrigger/SoundTrigger.h
deleted file mode 100644
index 248620a..0000000
--- a/include/soundtrigger/SoundTrigger.h
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
- * Copyright (C) 2014 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_SOUNDTRIGGER_H
-#define ANDROID_HARDWARE_SOUNDTRIGGER_H
-
-#include <binder/IBinder.h>
-#include <utils/threads.h>
-#include <soundtrigger/SoundTriggerCallback.h>
-#include <soundtrigger/ISoundTrigger.h>
-#include <soundtrigger/ISoundTriggerHwService.h>
-#include <soundtrigger/ISoundTriggerClient.h>
-#include <system/sound_trigger.h>
-
-namespace android {
-
-class MemoryDealer;
-
-class SoundTrigger : public BnSoundTriggerClient,
-                        public IBinder::DeathRecipient
-{
-public:
-
-    virtual ~SoundTrigger();
-
-    static  status_t listModules(const String16& opPackageName,
-                                 struct sound_trigger_module_descriptor *modules,
-                                 uint32_t *numModules);
-    static  sp<SoundTrigger> attach(const String16& opPackageName,
-                                    const sound_trigger_module_handle_t module,
-                                    const sp<SoundTriggerCallback>& callback);
-
-    static  status_t setCaptureState(bool active);
-
-            void detach();
-
-            status_t loadSoundModel(const sp<IMemory>& modelMemory,
-                                            sound_model_handle_t *handle);
-
-            status_t unloadSoundModel(sound_model_handle_t handle);
-
-            status_t startRecognition(sound_model_handle_t handle, const sp<IMemory>& dataMemory);
-            status_t stopRecognition(sound_model_handle_t handle);
-            status_t getModelState(sound_model_handle_t handle);
-            status_t setParameter(sound_model_handle_t handle,
-                    sound_trigger_model_parameter_t param, int32_t value);
-            status_t getParameter(sound_model_handle_t handle,
-                    sound_trigger_model_parameter_t param, int32_t* value);
-            status_t queryParameter(sound_model_handle_t handle,
-                    sound_trigger_model_parameter_t param,
-                    sound_trigger_model_parameter_range_t* param_range);
-
-            // BpSoundTriggerClient
-            virtual void onRecognitionEvent(const sp<IMemory>& eventMemory);
-            virtual void onSoundModelEvent(const sp<IMemory>& eventMemory);
-            virtual void onServiceStateChange(const sp<IMemory>& eventMemory);
-
-            //IBinder::DeathRecipient
-            virtual void binderDied(const wp<IBinder>& who);
-
-            static status_t stringToGuid(const char *str, sound_trigger_uuid_t *guid);
-            static status_t guidToString(const sound_trigger_uuid_t *guid,
-                                         char *str, size_t maxLen);
-
-private:
-            SoundTrigger(sound_trigger_module_handle_t module,
-                            const sp<SoundTriggerCallback>&);
-            static const sp<ISoundTriggerHwService> getSoundTriggerHwService();
-
-            Mutex                               mLock;
-            sp<ISoundTrigger>                   mISoundTrigger;
-            sp<SoundTriggerCallback>            mCallback;
-};
-
-}; // namespace android
-
-#endif //ANDROID_HARDWARE_SOUNDTRIGGER_H
diff --git a/include/soundtrigger/SoundTriggerCallback.h b/include/soundtrigger/SoundTriggerCallback.h
deleted file mode 100644
index b5277f2..0000000
--- a/include/soundtrigger/SoundTriggerCallback.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright (C) 2014 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_SOUNDTRIGGER_CALLBACK_H
-#define ANDROID_HARDWARE_SOUNDTRIGGER_CALLBACK_H
-
-#include <utils/RefBase.h>
-#include <system/sound_trigger.h>
-
-namespace android {
-
-class SoundTriggerCallback : public RefBase
-{
-public:
-
-            SoundTriggerCallback() {}
-    virtual ~SoundTriggerCallback() {}
-
-    virtual void onRecognitionEvent(struct sound_trigger_recognition_event *event) = 0;
-
-    virtual void onSoundModelEvent(struct sound_trigger_model_event *event) = 0;
-
-    virtual void onServiceStateChange(sound_trigger_service_state_t state) = 0;
-
-    virtual void onServiceDied() = 0;
-
-};
-
-}; // namespace android
-
-#endif //ANDROID_HARDWARE_SOUNDTRIGGER_CALLBACK_H
diff --git a/media/audioserver/Android.mk b/media/audioserver/Android.mk
index e33804d..fcf7cb1 100644
--- a/media/audioserver/Android.mk
+++ b/media/audioserver/Android.mk
@@ -19,7 +19,6 @@
 	libmediautils \
 	libnbaio \
 	libnblog \
-	libsoundtriggerservice \
 	libutils \
 	libvibrator
 
@@ -33,7 +32,6 @@
 	frameworks/av/services/audiopolicy/service \
 	frameworks/av/services/medialog \
 	frameworks/av/services/oboeservice \
-	frameworks/av/services/soundtrigger \
 	frameworks/av/media/libaaudio/include \
 	frameworks/av/media/libaaudio/src \
 	frameworks/av/media/libaaudio/src/binding \
diff --git a/media/audioserver/main_audioserver.cpp b/media/audioserver/main_audioserver.cpp
index db57248..4a2ac1d 100644
--- a/media/audioserver/main_audioserver.cpp
+++ b/media/audioserver/main_audioserver.cpp
@@ -36,7 +36,6 @@
 #include "utility/AAudioUtilities.h"
 #include "MediaLogService.h"
 #include "MediaUtils.h"
-#include "SoundTriggerHwService.h"
 
 using namespace android;
 
@@ -148,7 +147,6 @@
             AAudioService::instantiate();
         }
 
-        SoundTriggerHwService::instantiate();
         ProcessState::self()->startThreadPool();
         IPCThreadState::self()->joinThreadPool();
     }
diff --git a/media/extractors/mp4/MPEG4Extractor.cpp b/media/extractors/mp4/MPEG4Extractor.cpp
index 6f85960..8c0ecf2 100755
--- a/media/extractors/mp4/MPEG4Extractor.cpp
+++ b/media/extractors/mp4/MPEG4Extractor.cpp
@@ -1631,8 +1631,12 @@
         {
             *offset += chunk_size;
 
-            if (mLastTrack == NULL)
+            // the absolute minimum size of a compliant mett box is 11 bytes:
+            // 6 byte reserved, 2 byte index, null byte, one char mime_format, null byte
+            // The resulting mime_format would be invalid at that size though.
+            if (mLastTrack == NULL || chunk_data_size < 11) {
                 return ERROR_MALFORMED;
+            }
 
             auto buffer = heapbuffer<uint8_t>(chunk_data_size);
             if (buffer.get() == NULL) {
@@ -1644,10 +1648,24 @@
                 return ERROR_IO;
             }
 
+            // ISO-14496-12:
+            // int8 reserved[6];               // should be all zeroes
+            // int16_t data_reference_index;
+            // char content_encoding[];        // null terminated, optional (= just the null byte)
+            // char mime_format[];             // null terminated, mandatory
+            // optional other boxes
+            //
+            // API < 29:
+            // char mime_format[];             // null terminated
+            //
+            // API >= 29
+            // char mime_format[];             // null terminated
+            // char mime_format[];             // null terminated
+
             // Prior to API 29, the metadata track was not compliant with ISO/IEC
             // 14496-12-2015. This led to some ISO-compliant parsers failing to read the
             // metatrack. As of API 29 and onwards, a change was made to metadata track to
-            // make it compliant with the standard. The workaround is to write the
+            // make it somewhat compatible with the standard. The workaround is to write the
             // null-terminated mime_format string twice. This allows compliant parsers to
             // read the missing reserved, data_reference_index, and content_encoding fields
             // from the first mime_type string. The actual mime_format field would then be
@@ -1656,27 +1674,27 @@
             // as it would only read the first null-terminated mime_format string. To enable
             // reading metadata tracks generated from both the non-compliant and compliant
             // formats, a check needs to be done to see which format is used.
-            int null_pos = 0;
-            const unsigned char *str = buffer.get();
-            while (null_pos < chunk_data_size) {
-              if (*(str + null_pos) == '\0') {
-                break;
-              }
-              ++null_pos;
-            }
+            const char *str = (const char*) buffer.get();
+            size_t string_length = strnlen(str, chunk_data_size);
 
-            if (null_pos == chunk_data_size - 1) {
-              // This is not a standard ompliant metadata track.
-              String8 mimeFormat((const char *)(buffer.get()), chunk_data_size);
-              AMediaFormat_setString(mLastTrack->meta,
-                  AMEDIAFORMAT_KEY_MIME, mimeFormat.string());
+            if (string_length == chunk_data_size - 1) {
+                // This is likely a pre API 29 file, since it's a single null terminated
+                // string filling the entire box.
+                AMediaFormat_setString(mLastTrack->meta, AMEDIAFORMAT_KEY_MIME, str);
             } else {
-              // This is a standard compliant metadata track.
-              String8 contentEncoding((const char *)(buffer.get() + 8));
-              String8 mimeFormat((const char *)(buffer.get() + 8 + contentEncoding.size() + 1),
-                  chunk_data_size - 8 - contentEncoding.size() - 1);
-              AMediaFormat_setString(mLastTrack->meta,
-                  AMEDIAFORMAT_KEY_MIME, mimeFormat.string());
+                // This might be a fully compliant metadata track, a "double mime" compatibility
+                // track, or anything else, including a single non-terminated string, so we need
+                // to determine the length of each string we want to parse out of the box.
+                size_t encoding_length = strnlen(str + 8, chunk_data_size - 8);
+                if (encoding_length + 8 >= chunk_data_size - 2) {
+                    // the encoding extends to the end of the box, so there's no mime_format
+                    return ERROR_MALFORMED;
+                }
+                String8 contentEncoding(str + 8, encoding_length);
+                String8 mimeFormat(str + 8 + encoding_length + 1,
+                        chunk_data_size - 8 - encoding_length - 1);
+                AMediaFormat_setString(mLastTrack->meta,
+                        AMEDIAFORMAT_KEY_MIME, mimeFormat.string());
             }
             break;
         }
diff --git a/media/libaudioclient/IAudioPolicyService.cpp b/media/libaudioclient/IAudioPolicyService.cpp
index ab942df..b9e6e33 100644
--- a/media/libaudioclient/IAudioPolicyService.cpp
+++ b/media/libaudioclient/IAudioPolicyService.cpp
@@ -1371,8 +1371,6 @@
         case UNREGISTER_EFFECT:
         case SET_EFFECT_ENABLED:
         case GET_OUTPUT_FOR_ATTR:
-        case ACQUIRE_SOUNDTRIGGER_SESSION:
-        case RELEASE_SOUNDTRIGGER_SESSION:
         case MOVE_EFFECTS_TO_IO:
             ALOGW("%s: transaction %d received from PID %d",
                   __func__, code, IPCThreadState::self()->getCallingPid());
@@ -1410,6 +1408,8 @@
         case GET_OFFLOAD_FORMATS_A2DP:
         case LIST_AUDIO_VOLUME_GROUPS:
         case GET_VOLUME_GROUP_FOR_ATTRIBUTES:
+        case ACQUIRE_SOUNDTRIGGER_SESSION:
+        case RELEASE_SOUNDTRIGGER_SESSION:
         case SET_RTT_ENABLED:
         case IS_CALL_SCREEN_MODE_SUPPORTED:
         case SET_PREFERRED_DEVICE_FOR_PRODUCT_STRATEGY:
@@ -2027,8 +2027,6 @@
 
         case ACQUIRE_SOUNDTRIGGER_SESSION: {
             CHECK_INTERFACE(IAudioPolicyService, data, reply);
-            sp<IAudioPolicyServiceClient> client = interface_cast<IAudioPolicyServiceClient>(
-                    data.readStrongBinder());
             audio_session_t session = AUDIO_SESSION_NONE;
             audio_io_handle_t ioHandle = AUDIO_IO_HANDLE_NONE;
             audio_devices_t device = AUDIO_DEVICE_NONE;
@@ -2044,8 +2042,6 @@
 
         case RELEASE_SOUNDTRIGGER_SESSION: {
             CHECK_INTERFACE(IAudioPolicyService, data, reply);
-            sp<IAudioPolicyServiceClient> client = interface_cast<IAudioPolicyServiceClient>(
-                    data.readStrongBinder());
             audio_session_t session = (audio_session_t)data.readInt32();
             status_t status = releaseSoundTriggerSession(session);
             reply->writeInt32(status);
diff --git a/media/libaudiohal/impl/DeviceHalHidl.cpp b/media/libaudiohal/impl/DeviceHalHidl.cpp
index cd3ac1f..342ceb6 100644
--- a/media/libaudiohal/impl/DeviceHalHidl.cpp
+++ b/media/libaudiohal/impl/DeviceHalHidl.cpp
@@ -323,25 +323,45 @@
     if (mDevice == 0) return NO_INIT;
     if (patch == nullptr) return BAD_VALUE;
 
+#if MAJOR_VERSION < 6
     if (*patch != AUDIO_PATCH_HANDLE_NONE) {
         status_t status = releaseAudioPatch(*patch);
         ALOGW_IF(status != NO_ERROR, "%s error %d releasing patch handle %d",
             __func__, status, *patch);
+        *patch = AUDIO_PATCH_HANDLE_NONE;
     }
+#endif
 
     hidl_vec<AudioPortConfig> hidlSources, hidlSinks;
     HidlUtils::audioPortConfigsFromHal(num_sources, sources, &hidlSources);
     HidlUtils::audioPortConfigsFromHal(num_sinks, sinks, &hidlSinks);
-    Result retval;
-    Return<void> ret = mDevice->createAudioPatch(
-            hidlSources, hidlSinks,
-            [&](Result r, AudioPatchHandle hidlPatch) {
-                retval = r;
-                if (retval == Result::OK) {
-                    *patch = static_cast<audio_patch_handle_t>(hidlPatch);
-                }
-            });
-    return processReturn("createAudioPatch", ret, retval);
+    Result retval = Result::OK;
+    Return<void> ret;
+    std::string methodName = "createAudioPatch";
+    if (*patch == AUDIO_PATCH_HANDLE_NONE) {  // always true for MAJOR_VERSION < 6
+        ret = mDevice->createAudioPatch(
+                hidlSources, hidlSinks,
+                [&](Result r, AudioPatchHandle hidlPatch) {
+                    retval = r;
+                    if (retval == Result::OK) {
+                        *patch = static_cast<audio_patch_handle_t>(hidlPatch);
+                    }
+                });
+    } else {
+#if MAJOR_VERSION >= 6
+        ret = mDevice->updateAudioPatch(
+                *patch,
+                hidlSources, hidlSinks,
+                [&](Result r, AudioPatchHandle hidlPatch) {
+                    retval = r;
+                    if (retval == Result::OK) {
+                        *patch = static_cast<audio_patch_handle_t>(hidlPatch);
+                    }
+                });
+        methodName = "updateAudioPatch";
+#endif
+    }
+    return processReturn(methodName.c_str(), ret, retval);
 }
 
 status_t DeviceHalHidl::releaseAudioPatch(audio_patch_handle_t patch) {
diff --git a/media/libmediaplayerservice/nuplayer/GenericSource.cpp b/media/libmediaplayerservice/nuplayer/GenericSource.cpp
index a49e72e..4657f9e 100644
--- a/media/libmediaplayerservice/nuplayer/GenericSource.cpp
+++ b/media/libmediaplayerservice/nuplayer/GenericSource.cpp
@@ -418,7 +418,7 @@
                     sp<IMediaExtractorService> mediaExService(
                             interface_cast<IMediaExtractorService>(binder));
                     sp<IDataSource> source;
-                    mediaExService->makeIDataSource(mFd, mOffset, mLength, &source);
+                    mediaExService->makeIDataSource(base::unique_fd(dup(mFd.get())), mOffset, mLength, &source);
                     ALOGV("IDataSource(FileSource): %p %d %lld %lld",
                             source.get(), mFd.get(), (long long)mOffset, (long long)mLength);
                     if (source.get() != nullptr) {
diff --git a/media/libstagefright/MediaCodec.cpp b/media/libstagefright/MediaCodec.cpp
index e516477..709bc08 100644
--- a/media/libstagefright/MediaCodec.cpp
+++ b/media/libstagefright/MediaCodec.cpp
@@ -101,6 +101,10 @@
 static const char *kCodecLatencyHist = "android.media.mediacodec.latency.hist"; /* in us */
 static const char *kCodecLatencyUnknown = "android.media.mediacodec.latency.unknown";
 
+static const char *kCodecNumLowLatencyModeOn = "android.media.mediacodec.low-latency.on";  /* 0..n */
+static const char *kCodecNumLowLatencyModeOff = "android.media.mediacodec.low-latency.off";  /* 0..n */
+static const char *kCodecFirstFrameIndexLowLatencyModeOn = "android.media.mediacodec.low-latency.first-frame";  /* 0..n */
+
 // the kCodecRecent* fields appear only in getMetrics() results
 static const char *kCodecRecentLatencyMax = "android.media.mediacodec.recent.max";      /* in us */
 static const char *kCodecRecentLatencyMin = "android.media.mediacodec.recent.min";      /* in us */
@@ -583,7 +587,12 @@
       mHaveInputSurface(false),
       mHavePendingInputBuffers(false),
       mCpuBoostRequested(false),
-      mLatencyUnknown(0) {
+      mLatencyUnknown(0),
+      mNumLowLatencyEnables(0),
+      mNumLowLatencyDisables(0),
+      mIsLowLatencyModeOn(false),
+      mIndexOfFirstFrameWhenLowLatencyOn(-1),
+      mInputBufferCounter(0) {
     if (uid == kNoUid) {
         mUid = AIBinder_getCallingUid();
     } else {
@@ -616,6 +625,16 @@
         }
         mRecentHead = 0;
     }
+
+    {
+        Mutex::Autolock al(mLatencyLock);
+        mBuffersInFlight.clear();
+        mNumLowLatencyEnables = 0;
+        mNumLowLatencyDisables = 0;
+        mIsLowLatencyModeOn = false;
+        mIndexOfFirstFrameWhenLowLatencyOn = -1;
+        mInputBufferCounter = 0;
+    }
 }
 
 void MediaCodec::updateMediametrics() {
@@ -641,6 +660,13 @@
         mediametrics_setInt64(mMetricsHandle, kCodecLatencyUnknown, mLatencyUnknown);
     }
 
+    {
+        Mutex::Autolock al(mLatencyLock);
+        mediametrics_setInt64(mMetricsHandle, kCodecNumLowLatencyModeOn, mNumLowLatencyEnables);
+        mediametrics_setInt64(mMetricsHandle, kCodecNumLowLatencyModeOff, mNumLowLatencyDisables);
+        mediametrics_setInt64(mMetricsHandle, kCodecFirstFrameIndexLowLatencyModeOn,
+                              mIndexOfFirstFrameWhenLowLatencyOn);
+    }
 #if 0
     // enable for short term, only while debugging
     updateEphemeralMediametrics(mMetricsHandle);
@@ -697,6 +723,22 @@
     }
 }
 
+void MediaCodec::updateLowLatency(const sp<AMessage> &msg) {
+    int32_t lowLatency = 0;
+    if (msg->findInt32("low-latency", &lowLatency)) {
+        Mutex::Autolock al(mLatencyLock);
+        if (lowLatency > 0) {
+            ++mNumLowLatencyEnables;
+            // This is just an estimate since low latency mode change happens ONLY at key frame
+            mIsLowLatencyModeOn = true;
+        } else if (lowLatency == 0) {
+            ++mNumLowLatencyDisables;
+            // This is just an estimate since low latency mode change happens ONLY at key frame
+            mIsLowLatencyModeOn = false;
+        }
+    }
+}
+
 bool MediaCodec::Histogram::setup(int nbuckets, int64_t width, int64_t floor)
 {
     if (nbuckets <= 0 || width <= 0) {
@@ -813,6 +855,11 @@
         // XXX: we *could* make sure that the time is later than the end of queue
         // as part of a consistency check...
         mBuffersInFlight.push_back(startdata);
+
+        if (mIsLowLatencyModeOn && mIndexOfFirstFrameWhenLowLatencyOn < 0) {
+            mIndexOfFirstFrameWhenLowLatencyOn = mInputBufferCounter;
+        }
+        ++mInputBufferCounter;
     }
 }
 
@@ -1133,6 +1180,8 @@
         }
     }
 
+    updateLowLatency(format);
+
     msg->setMessage("format", format);
     msg->setInt32("flags", flags);
     msg->setObject("surface", surface);
@@ -3714,6 +3763,7 @@
 }
 
 status_t MediaCodec::onSetParameters(const sp<AMessage> &params) {
+    updateLowLatency(params);
     mCodec->signalSetParameters(params);
 
     return OK;
diff --git a/media/libstagefright/codecs/amrnb/common/Android.bp b/media/libstagefright/codecs/amrnb/common/Android.bp
index 772ebf9..ea8b073 100644
--- a/media/libstagefright/codecs/amrnb/common/Android.bp
+++ b/media/libstagefright/codecs/amrnb/common/Android.bp
@@ -1,4 +1,4 @@
-cc_library_shared {
+cc_library {
     name: "libstagefright_amrnb_common",
     vendor_available: true,
 
diff --git a/media/libstagefright/include/media/stagefright/MediaCodec.h b/media/libstagefright/include/media/stagefright/MediaCodec.h
index 78cb01c..5c5c23a 100644
--- a/media/libstagefright/include/media/stagefright/MediaCodec.h
+++ b/media/libstagefright/include/media/stagefright/MediaCodec.h
@@ -313,6 +313,7 @@
     void updateMediametrics();
     void flushMediametrics();
     void updateEphemeralMediametrics(mediametrics_handle_t item);
+    void updateLowLatency(const sp<AMessage> &msg);
 
     sp<AMessage> mOutputFormat;
     sp<AMessage> mInputFormat;
@@ -440,6 +441,12 @@
     std::deque<BufferFlightTiming_t> mBuffersInFlight;
     Mutex mLatencyLock;
     int64_t mLatencyUnknown;    // buffers for which we couldn't calculate latency
+    int64_t mNumLowLatencyEnables;  // how many times low latency mode is enabled
+    int64_t mNumLowLatencyDisables;  // how many times low latency mode is disabled
+    bool mIsLowLatencyModeOn;  // is low latency mode on currently
+    int64_t mIndexOfFirstFrameWhenLowLatencyOn;  // index of the first frame queued
+                                                 // when low latency is on
+    int64_t mInputBufferCounter;  // number of input buffers queued since last reset/flush
 
     sp<BatteryChecker> mBatteryChecker;
 
diff --git a/media/mtp/IMtpHandle.h b/media/mtp/IMtpHandle.h
index fd14b18..0435e82 100644
--- a/media/mtp/IMtpHandle.h
+++ b/media/mtp/IMtpHandle.h
@@ -16,7 +16,7 @@
 #ifndef _IMTP_HANDLE_H
 #define _IMTP_HANDLE_H
 
-#include <linux/usb/f_mtp.h>
+#include "f_mtp.h"
 
 namespace android {
 
diff --git a/media/mtp/MtpServer.cpp b/media/mtp/MtpServer.cpp
index af69a10..fdf51b1 100644
--- a/media/mtp/MtpServer.cpp
+++ b/media/mtp/MtpServer.cpp
@@ -84,8 +84,8 @@
 //    MTP_OPERATION_SET_OBJECT_PROP_LIST,
 //    MTP_OPERATION_GET_INTERDEPENDENT_PROP_DESC,
 //    MTP_OPERATION_SEND_OBJECT_PROP_LIST,
-    MTP_OPERATION_GET_OBJECT_REFERENCES,
-    MTP_OPERATION_SET_OBJECT_REFERENCES,
+//    MTP_OPERATION_GET_OBJECT_REFERENCES,
+//    MTP_OPERATION_SET_OBJECT_REFERENCES,
 //    MTP_OPERATION_SKIP,
     // Android extension for direct file IO
     MTP_OPERATION_GET_PARTIAL_OBJECT_64,
diff --git a/media/mtp/f_mtp.h b/media/mtp/f_mtp.h
new file mode 100644
index 0000000..22ec771
--- /dev/null
+++ b/media/mtp/f_mtp.h
@@ -0,0 +1,43 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _UAPI_LINUX_USB_F_MTP_H
+#define _UAPI_LINUX_USB_F_MTP_H
+#include <linux/ioctl.h>
+#include <linux/types.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+struct mtp_file_range {
+  int fd;
+  loff_t offset;
+  int64_t length;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  uint16_t command;
+  uint32_t transaction_id;
+};
+struct mtp_event {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  size_t length;
+  void * data;
+};
+#define MTP_SEND_FILE _IOW('M', 0, struct mtp_file_range)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define MTP_RECEIVE_FILE _IOW('M', 1, struct mtp_file_range)
+#define MTP_SEND_EVENT _IOW('M', 3, struct mtp_event)
+#define MTP_SEND_FILE_WITH_HEADER _IOW('M', 4, struct mtp_file_range)
+#endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index 0911a1f..e953c8e 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -2993,7 +2993,7 @@
     for (size_t i = 0; i < chains.size(); i++) {
         sp<EffectChain> ec = chains[i];
         int sessionid = ec->sessionId();
-        sp<ThreadBase> t = ec->mThread.promote();
+        sp<ThreadBase> t = ec->thread().promote();
         if (t == 0) {
             continue;
         }
@@ -3016,7 +3016,7 @@
                 effect->unPin();
                 t->removeEffect_l(effect, /*release*/ true);
                 if (effect->purgeHandles()) {
-                    t->checkSuspendOnEffectEnabled_l(effect, false, effect->sessionId());
+                    effect->checkSuspendOnEffectEnabled(false, true /*threadLocked*/);
                 }
                 removedEffects.push_back(effect);
             }
@@ -3639,7 +3639,7 @@
         // if the move request is not received from audio policy manager, the effect must be
         // re-registered with the new strategy and output
         if (dstChain == 0) {
-            dstChain = effect->chain().promote();
+            dstChain = effect->callback()->chain().promote();
             if (dstChain == 0) {
                 ALOGW("moveEffectChain_l() cannot get chain from effect %p", effect.get());
                 status = NO_INIT;
@@ -3689,7 +3689,7 @@
             goto Exit;
         }
 
-        dstChain = effect->chain().promote();
+        dstChain = effect->callback()->chain().promote();
         if (dstChain == 0) {
             thread->addEffect_l(effect);
             status = INVALID_OPERATION;
diff --git a/services/audioflinger/Effects.cpp b/services/audioflinger/Effects.cpp
index f27c6ad..2a83fd3 100644
--- a/services/audioflinger/Effects.cpp
+++ b/services/audioflinger/Effects.cpp
@@ -64,14 +64,13 @@
 #undef LOG_TAG
 #define LOG_TAG "AudioFlinger::EffectModule"
 
-AudioFlinger::EffectModule::EffectModule(ThreadBase *thread,
-                                        const wp<AudioFlinger::EffectChain>& chain,
+AudioFlinger::EffectModule::EffectModule(const sp<AudioFlinger::EffectCallbackInterface>& callback,
                                         effect_descriptor_t *desc,
                                         int id,
                                         audio_session_t sessionId,
                                         bool pinned)
     : mPinned(pinned),
-      mThread(thread), mChain(chain), mId(id), mSessionId(sessionId),
+      mCallback(callback), mId(id), mSessionId(sessionId),
       mDescriptor(*desc),
       // clear mConfig to ensure consistent initial value of buffer framecount
       // in case buffers are associated by setInBuffer() or setOutBuffer()
@@ -81,8 +80,7 @@
       mMaxDisableWaitCnt(1), // set by configure(), should be >= 1
       mDisableWaitCnt(0),    // set by process() and updateState()
       mSuspended(false),
-      mOffloaded(false),
-      mAudioFlinger(thread->mAudioFlinger)
+      mOffloaded(false)
 #ifdef FLOAT_EFFECT_CHAIN
       , mSupportsFloat(false)
 #endif
@@ -91,16 +89,8 @@
     int lStatus;
 
     // create effect engine from effect factory
-    mStatus = -ENODEV;
-    sp<AudioFlinger> audioFlinger = mAudioFlinger.promote();
-    if (audioFlinger != 0) {
-        sp<EffectsFactoryHalInterface> effectsFactory = audioFlinger->getEffectsFactory();
-        if (effectsFactory != 0) {
-            mStatus = effectsFactory->createEffect(
-                &desc->uuid, sessionId, thread->id(), AUDIO_PORT_HANDLE_NONE, &mEffectInterface);
-        }
-    }
-
+    mStatus = callback->createEffectHal(
+            &desc->uuid, sessionId, AUDIO_PORT_HANDLE_NONE, &mEffectInterface);
     if (mStatus != NO_ERROR) {
         return;
     }
@@ -110,7 +100,7 @@
         goto Error;
     }
 
-    setOffloaded(thread->type() == ThreadBase::OFFLOAD, thread->id());
+    setOffloaded(callback->isOffload(), callback->io());
     ALOGV("Constructor success name %s, Interface %p", mDescriptor.name, mEffectInterface.get());
 
     return;
@@ -188,14 +178,8 @@
             doRegister = true;
             mPolicyRegistered = mHandles.size() > 0;
             if (mPolicyRegistered) {
-              sp <EffectChain> chain = mChain.promote();
-              sp <ThreadBase> thread = mThread.promote();
-
-              if (thread == nullptr || chain == nullptr) {
-                    return INVALID_OPERATION;
-                }
-                io = thread->id();
-                strategy = chain->strategy();
+                io = mCallback->io();
+                strategy = mCallback->strategy();
             }
         }
         // enable effect when registered according to enable state requested by controlling handle
@@ -292,15 +276,16 @@
 ssize_t AudioFlinger::EffectModule::disconnectHandle(EffectHandle *handle, bool unpinIfLast)
 {
     ALOGV("disconnect() %p handle %p", this, handle);
+    if (mCallback->disconnectEffectHandle(handle, unpinIfLast)) {
+        return mHandles.size();
+    }
+
     Mutex::Autolock _l(mLock);
     ssize_t numHandles = removeHandle_l(handle);
     if ((numHandles == 0) && (!mPinned || unpinIfLast)) {
-        sp<AudioFlinger> af = mAudioFlinger.promote();
-        if (af != 0) {
-            mLock.unlock();
-            af->updateOrphanEffectChains(this);
-            mLock.lock();
-        }
+        mLock.unlock();
+        mCallback->updateOrphanEffectChains(this);
+        mLock.lock();
     }
     return numHandles;
 }
@@ -542,8 +527,7 @@
                 mConfig.inputCfg.buffer.raw != mConfig.outputCfg.buffer.raw) {
         // If an insert effect is idle and input buffer is different from output buffer,
         // accumulate input onto output
-        sp<EffectChain> chain = mChain.promote();
-        if (chain.get() != nullptr && chain->activeTrackCnt() != 0) {
+        if (mCallback->activeTrackCnt() != 0) {
             // similar handling with data_bypass above.
             if (mConfig.outputCfg.accessMode == EFFECT_BUFFER_ACCESS_ACCUMULATE) {
                 accumulateInputToOutput();
@@ -566,7 +550,6 @@
 {
     ALOGVV("configure() started");
     status_t status;
-    sp<ThreadBase> thread;
     uint32_t size;
     audio_channel_mask_t channelMask;
 
@@ -575,17 +558,11 @@
         goto exit;
     }
 
-    thread = mThread.promote();
-    if (thread == 0) {
-        status = DEAD_OBJECT;
-        goto exit;
-    }
-
     // TODO: handle configuration of effects replacing track process
     // TODO: handle configuration of input (record) SW effects above the HAL,
     // similar to output EFFECT_FLAG_TYPE_INSERT/REPLACE,
     // in which case input channel masks should be used here.
-    channelMask = thread->channelMask();
+    channelMask = mCallback->channelMask();
     mConfig.inputCfg.channels = channelMask;
     mConfig.outputCfg.channels = channelMask;
 
@@ -622,11 +599,11 @@
     mConfig.outputCfg.format = EFFECT_BUFFER_FORMAT;
 
     // Don't use sample rate for thread if effect isn't offloadable.
-    if ((thread->type() == ThreadBase::OFFLOAD) && !isOffloaded()) {
+    if (mCallback->isOffload() && !isOffloaded()) {
         mConfig.inputCfg.samplingRate = DEFAULT_OUTPUT_SAMPLE_RATE;
         ALOGV("Overriding effect input as 48kHz");
     } else {
-        mConfig.inputCfg.samplingRate = thread->sampleRate();
+        mConfig.inputCfg.samplingRate = mCallback->sampleRate();
     }
     mConfig.outputCfg.samplingRate = mConfig.inputCfg.samplingRate;
     mConfig.inputCfg.bufferProvider.cookie = NULL;
@@ -652,11 +629,13 @@
     }
     mConfig.inputCfg.mask = EFFECT_CONFIG_ALL;
     mConfig.outputCfg.mask = EFFECT_CONFIG_ALL;
-    mConfig.inputCfg.buffer.frameCount = thread->frameCount();
+    mConfig.inputCfg.buffer.frameCount = mCallback->frameCount();
     mConfig.outputCfg.buffer.frameCount = mConfig.inputCfg.buffer.frameCount;
 
-    ALOGV("configure() %p thread %p buffer %p framecount %zu",
-            this, thread.get(), mConfig.inputCfg.buffer.raw, mConfig.inputCfg.buffer.frameCount);
+    ALOGV("configure() %p chain %p buffer %p framecount %zu",
+            this, mCallback->chain().promote() != nullptr ? mCallback->chain().promote().get() :
+                                                            nullptr,
+              mConfig.inputCfg.buffer.raw, mConfig.inputCfg.buffer.frameCount);
 
     status_t cmdStatus;
     size = sizeof(int);
@@ -671,7 +650,7 @@
 
 #ifdef MULTICHANNEL_EFFECT_CHAIN
     if (status != NO_ERROR &&
-            thread->isOutput() &&
+            mCallback->isOutput() &&
             (mConfig.inputCfg.channels != AUDIO_CHANNEL_OUT_STEREO
                     || mConfig.outputCfg.channels != AUDIO_CHANNEL_OUT_STEREO)) {
         // Older effects may require exact STEREO position mask.
@@ -738,11 +717,7 @@
             size = sizeof(int);
             *(int32_t *)p->data = VISUALIZER_PARAM_LATENCY;
 
-            uint32_t latency = 0;
-            PlaybackThread *pbt = thread->mAudioFlinger->checkPlaybackThread_l(thread->mId);
-            if (pbt != NULL) {
-                latency = pbt->latency_l();
-            }
+            uint32_t latency = mCallback->latency();
 
             *((int32_t *)p->data + 1)= latency;
             mEffectInterface->command(EFFECT_CMD_SET_PARAM,
@@ -789,31 +764,20 @@
 {
     if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC ||
          (mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_POST_PROC) {
-        sp<ThreadBase> thread = mThread.promote();
-        if (thread != 0) {
-            sp<StreamHalInterface> stream = thread->stream();
-            if (stream != 0) {
-                status_t result = stream->addEffect(mEffectInterface);
-                ALOGE_IF(result != OK, "Error when adding effect: %d", result);
-            }
-        }
+        (void)mCallback->addEffectToHal(mEffectInterface);
     }
 }
 
 // start() must be called with PlaybackThread::mLock or EffectChain::mLock held
 status_t AudioFlinger::EffectModule::start()
 {
-    sp<EffectChain> chain;
     status_t status;
     {
         Mutex::Autolock _l(mLock);
         status = start_l();
-        if (status == NO_ERROR) {
-            chain = mChain.promote();
-        }
     }
-    if (chain != 0) {
-        chain->resetVolume_l();
+    if (status == NO_ERROR) {
+        mCallback->resetVolume();
     }
     return status;
 }
@@ -860,11 +824,10 @@
     uint32_t size = sizeof(status_t);
 
     if (isVolumeControl() && isOffloadedOrDirect()) {
-        sp<EffectChain>chain = mChain.promote();
         // We have the EffectChain and EffectModule lock, permit a reentrant call to setVolume:
         // resetVolume_l --> setVolume_l --> EffectModule::setVolume
         mSetVolumeReentrantTid = gettid();
-        chain->resetVolume_l();
+        mCallback->resetVolume();
         mSetVolumeReentrantTid = INVALID_PID;
     }
 
@@ -877,7 +840,7 @@
         status = cmdStatus;
     }
     if (status == NO_ERROR) {
-        status = remove_effect_from_hal_l();
+        status = removeEffectFromHal_l();
     }
     return status;
 }
@@ -886,25 +849,18 @@
 void AudioFlinger::EffectModule::release_l()
 {
     if (mEffectInterface != 0) {
-        remove_effect_from_hal_l();
+        removeEffectFromHal_l();
         // release effect engine
         mEffectInterface->close();
         mEffectInterface.clear();
     }
 }
 
-status_t AudioFlinger::EffectModule::remove_effect_from_hal_l()
+status_t AudioFlinger::EffectModule::removeEffectFromHal_l()
 {
     if ((mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_PRE_PROC ||
              (mDescriptor.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_POST_PROC) {
-        sp<ThreadBase> thread = mThread.promote();
-        if (thread != 0) {
-            sp<StreamHalInterface> stream = thread->stream();
-            if (stream != 0) {
-                status_t result = stream->removeEffect(mEffectInterface);
-                ALOGE_IF(result != OK, "Error when removing effect: %d", result);
-            }
-        }
+        mCallback->removeEffectFromHal(mEffectInterface);
     }
     return NO_ERROR;
 }
@@ -994,10 +950,29 @@
     return status;
 }
 
-status_t AudioFlinger::EffectModule::setEnabled(bool enabled)
+void AudioFlinger::EffectModule::checkSuspendOnEffectEnabled(bool enabled, bool threadLocked) {
+    mCallback->checkSuspendOnEffectEnabled(this, enabled, threadLocked);
+}
+
+status_t AudioFlinger::EffectModule::setEnabled(bool enabled, bool fromHandle)
 {
-    Mutex::Autolock _l(mLock);
-    return setEnabled_l(enabled);
+    status_t status;
+    {
+        Mutex::Autolock _l(mLock);
+        status = setEnabled_l(enabled);
+    }
+    if (fromHandle) {
+        if (enabled) {
+            if (status != NO_ERROR) {
+                mCallback->checkSuspendOnEffectEnabled(this, false, false /*threadLocked*/);
+            } else {
+                mCallback->onEffectEnable(this);
+            }
+        } else {
+            mCallback->onEffectDisable(this);
+        }
+    }
+    return status;
 }
 
 // must be called with EffectModule::mLock held
@@ -1080,7 +1055,7 @@
 
 bool AudioFlinger::EffectModule::isOffloadedOrDirect() const
 {
-    return (mThreadType == ThreadBase::OFFLOAD || mThreadType == ThreadBase::DIRECT);
+    return mCallback->isOffloadOrDirect();
 }
 
 bool AudioFlinger::EffectModule::isVolumeControlEnabled() const
@@ -1124,9 +1099,7 @@
                 || size > mInConversionBuffer->getSize())) {
             mInConversionBuffer.clear();
             ALOGV("%s: allocating mInConversionBuffer %zu", __func__, size);
-            sp<AudioFlinger> audioFlinger = mAudioFlinger.promote();
-            LOG_ALWAYS_FATAL_IF(audioFlinger == nullptr, "EM could not retrieved audioFlinger");
-            (void)audioFlinger->mEffectsFactoryHal->allocateBuffer(size, &mInConversionBuffer);
+            (void)mCallback->allocateHalBuffer(size, &mInConversionBuffer);
         }
         if (mInConversionBuffer.get() != nullptr) {
             mInConversionBuffer->setFrameCount(inFrameCount);
@@ -1170,9 +1143,7 @@
                 || size > mOutConversionBuffer->getSize())) {
             mOutConversionBuffer.clear();
             ALOGV("%s: allocating mOutConversionBuffer %zu", __func__, size);
-            sp<AudioFlinger> audioFlinger = mAudioFlinger.promote();
-            LOG_ALWAYS_FATAL_IF(audioFlinger == nullptr, "EM could not retrieved audioFlinger");
-            (void)audioFlinger->mEffectsFactoryHal->allocateBuffer(size, &mOutConversionBuffer);
+            (void)mCallback->allocateHalBuffer(size, &mOutConversionBuffer);
         }
         if (mOutConversionBuffer.get() != nullptr) {
             mOutConversionBuffer->setFrameCount(outFrameCount);
@@ -1220,14 +1191,10 @@
 
 void AudioFlinger::EffectChain::setVolumeForOutput_l(uint32_t left, uint32_t right)
 {
-    sp<ThreadBase> thread = mThread.promote();
-    if (thread != 0 &&
-        (thread->type() == ThreadBase::OFFLOAD || thread->type() == ThreadBase::DIRECT) &&
-        !isNonOffloadableEnabled_l()) {
-        PlaybackThread *t = (PlaybackThread *)thread.get();
+    if (mEffectCallback->isOffloadOrDirect() && !isNonOffloadableEnabled_l()) {
         float vol_l = (float)left / (1 << 24);
         float vol_r = (float)right / (1 << 24);
-        t->setVolumeForOutput_l(vol_l, vol_r);
+        mEffectCallback->setVolumeForOutput(vol_l, vol_r);
     }
 }
 
@@ -1646,38 +1613,16 @@
         return status;
     }
 
-    sp<ThreadBase> thread = effect->thread().promote();
-    if (thread != 0) {
-        thread->checkSuspendOnEffectEnabled(effect, true, effect->sessionId());
-    }
+    effect->checkSuspendOnEffectEnabled(true, false /*threadLocked*/);
 
     // checkSuspendOnEffectEnabled() can suspend this same effect when enabled
     if (effect->suspended()) {
         return NO_ERROR;
     }
 
-    status = effect->setEnabled(true);
+    status = effect->setEnabled(true, true /*fromHandle*/);
     if (status != NO_ERROR) {
-        if (thread != 0) {
-            thread->checkSuspendOnEffectEnabled(effect, false, effect->sessionId());
-        }
         mEnabled = false;
-    } else {
-        if (thread != 0) {
-            if (thread->type() == ThreadBase::OFFLOAD || thread->type() == ThreadBase::MMAP) {
-                Mutex::Autolock _l(thread->mLock);
-                thread->broadcast_l();
-            }
-            if (!effect->isOffloadable()) {
-                if (thread->type() == ThreadBase::OFFLOAD) {
-                    PlaybackThread *t = (PlaybackThread *)thread.get();
-                    t->invalidateTracks(AUDIO_STREAM_MUSIC);
-                }
-                if (effect->sessionId() == AUDIO_SESSION_OUTPUT_MIX) {
-                    thread->mAudioFlinger->onNonOffloadableGlobalEffectEnable();
-                }
-            }
-        }
     }
     return status;
 }
@@ -1705,17 +1650,7 @@
         return NO_ERROR;
     }
 
-    status_t status = effect->setEnabled(false);
-
-    sp<ThreadBase> thread = effect->thread().promote();
-    if (thread != 0) {
-        thread->checkSuspendOnEffectEnabled(effect, false, effect->sessionId());
-        if (thread->type() == ThreadBase::OFFLOAD || thread->type() == ThreadBase::MMAP) {
-            Mutex::Autolock _l(thread->mLock);
-            thread->broadcast_l();
-        }
-    }
-
+    status_t status = effect->setEnabled(false, true /*fromHandle*/);
     return status;
 }
 
@@ -1739,10 +1674,7 @@
     {
         sp<EffectModule> effect = mEffect.promote();
         if (effect != 0) {
-            sp<ThreadBase> thread = effect->thread().promote();
-            if (thread != 0) {
-                thread->disconnectEffectHandle(this, unpinIfLast);
-            } else if (effect->disconnectHandle(this, unpinIfLast) > 0) {
+            if (effect->disconnectHandle(this, unpinIfLast) > 0) {
                 ALOGW("%s Effect handle %p disconnected after thread destruction",
                     __func__, this);
             }
@@ -1962,12 +1894,13 @@
 
 AudioFlinger::EffectChain::EffectChain(ThreadBase *thread,
                                         audio_session_t sessionId)
-    : mThread(thread), mSessionId(sessionId), mActiveTrackCnt(0), mTrackCnt(0), mTailBufferCount(0),
+    : mSessionId(sessionId), mActiveTrackCnt(0), mTrackCnt(0), mTailBufferCount(0),
       mVolumeCtrlIdx(-1), mLeftVolume(UINT_MAX), mRightVolume(UINT_MAX),
-      mNewLeftVolume(UINT_MAX), mNewRightVolume(UINT_MAX)
+      mNewLeftVolume(UINT_MAX), mNewRightVolume(UINT_MAX),
+      mEffectCallback(new EffectCallback(this, thread, thread->mAudioFlinger.get()))
 {
     mStrategy = AudioSystem::getStrategyForStream(AUDIO_STREAM_MUSIC);
-    if (thread == NULL) {
+    if (thread == nullptr) {
         return;
     }
     mMaxTailBuffers = ((kProcessTailDurationMs * thread->sampleRate()) / 1000) /
@@ -2033,40 +1966,29 @@
 void AudioFlinger::EffectChain::clearInputBuffer()
 {
     Mutex::Autolock _l(mLock);
-    sp<ThreadBase> thread = mThread.promote();
-    if (thread == 0) {
-        ALOGW("clearInputBuffer(): cannot promote mixer thread");
-        return;
-    }
-    clearInputBuffer_l(thread);
+    clearInputBuffer_l();
 }
 
 // Must be called with EffectChain::mLock locked
-void AudioFlinger::EffectChain::clearInputBuffer_l(const sp<ThreadBase>& thread)
+void AudioFlinger::EffectChain::clearInputBuffer_l()
 {
     if (mInBuffer == NULL) {
         return;
     }
     const size_t frameSize =
-            audio_bytes_per_sample(EFFECT_BUFFER_FORMAT) * thread->channelCount();
+            audio_bytes_per_sample(EFFECT_BUFFER_FORMAT) * mEffectCallback->channelCount();
 
-    memset(mInBuffer->audioBuffer()->raw, 0, thread->frameCount() * frameSize);
+    memset(mInBuffer->audioBuffer()->raw, 0, mEffectCallback->frameCount() * frameSize);
     mInBuffer->commit();
 }
 
 // Must be called with EffectChain::mLock locked
 void AudioFlinger::EffectChain::process_l()
 {
-    sp<ThreadBase> thread = mThread.promote();
-    if (thread == 0) {
-        ALOGW("process_l(): cannot promote mixer thread");
-        return;
-    }
     // never process effects when:
     // - on an OFFLOAD thread
     // - no more tracks are on the session and the effect tail has been rendered
-    bool doProcess = (thread->type() != ThreadBase::OFFLOAD)
-                  && (thread->type() != ThreadBase::MMAP);
+    bool doProcess = !mEffectCallback->isOffloadOrMmap();
     if (!audio_is_global_session(mSessionId)) {
         bool tracksOnSession = (trackCnt() != 0);
 
@@ -2078,7 +2000,7 @@
             // if no track is active and the effect tail has not been rendered,
             // the input buffer must be cleared here as the mixer process will not do it
             if (tracksOnSession || mTailBufferCount > 0) {
-                clearInputBuffer_l(thread);
+                clearInputBuffer_l();
                 if (mTailBufferCount > 0) {
                     mTailBufferCount--;
                 }
@@ -2114,14 +2036,13 @@
 
 // createEffect_l() must be called with ThreadBase::mLock held
 status_t AudioFlinger::EffectChain::createEffect_l(sp<EffectModule>& effect,
-                                                   ThreadBase *thread,
                                                    effect_descriptor_t *desc,
                                                    int id,
                                                    audio_session_t sessionId,
                                                    bool pinned)
 {
     Mutex::Autolock _l(mLock);
-    effect = new EffectModule(thread, this, desc, id, sessionId, pinned);
+    effect = new EffectModule(mEffectCallback, desc, id, sessionId, pinned);
     status_t lStatus = effect->status();
     if (lStatus == NO_ERROR) {
         lStatus = addEffect_ll(effect);
@@ -2144,12 +2065,7 @@
     effect_descriptor_t desc = effect->desc();
     uint32_t insertPref = desc.flags & EFFECT_FLAG_INSERT_MASK;
 
-    effect->setChain(this);
-    sp<ThreadBase> thread = mThread.promote();
-    if (thread == 0) {
-        return NO_INIT;
-    }
-    effect->setThread(thread);
+    effect->setCallback(mEffectCallback);
 
     if ((desc.flags & EFFECT_FLAG_TYPE_MASK) == EFFECT_FLAG_TYPE_AUXILIARY) {
         // Auxiliary effects are inserted at the beginning of mEffects vector as
@@ -2160,13 +2076,13 @@
         // 32 bit format. This is to avoid saturation in AudoMixer
         // accumulation stage. Saturation is done in EffectModule::process() before
         // calling the process in effect engine
-        size_t numSamples = thread->frameCount();
+        size_t numSamples = mEffectCallback->frameCount();
         sp<EffectBufferHalInterface> halBuffer;
 #ifdef FLOAT_EFFECT_CHAIN
-        status_t result = thread->mAudioFlinger->mEffectsFactoryHal->allocateBuffer(
+        status_t result = mEffectCallback->allocateHalBuffer(
                 numSamples * sizeof(float), &halBuffer);
 #else
-        status_t result = thread->mAudioFlinger->mEffectsFactoryHal->allocateBuffer(
+        status_t result = mEffectCallback->allocateHalBuffer(
                 numSamples * sizeof(int32_t), &halBuffer);
 #endif
         if (result != OK) return result;
@@ -2484,7 +2400,7 @@
             if (effect != 0) {
                 desc->mEffect = effect;
                 effect->setSuspended(true);
-                effect->setEnabled(false);
+                effect->setEnabled(false, false /*fromHandle*/);
             }
         }
     } else {
@@ -2642,7 +2558,7 @@
         // if effect is requested to suspended but was not yet enabled, suspend it now.
         if (desc->mEffect == 0) {
             desc->mEffect = effect;
-            effect->setEnabled(false);
+            effect->setEnabled(false, false /*fromHandle*/);
             effect->setSuspended(true);
         }
     } else {
@@ -2677,10 +2593,7 @@
 void AudioFlinger::EffectChain::setThread(const sp<ThreadBase>& thread)
 {
     Mutex::Autolock _l(mLock);
-    mThread = thread;
-    for (size_t i = 0; i < mEffects.size(); i++) {
-        mEffects[i]->setThread(thread);
-    }
+    mEffectCallback->setThread(thread.get());
 }
 
 void AudioFlinger::EffectChain::checkOutputFlagCompatibility(audio_output_flags_t *flags) const
@@ -2740,4 +2653,224 @@
     return true;
 }
 
+// EffectCallbackInterface implementation
+status_t AudioFlinger::EffectChain::EffectCallback::createEffectHal(
+        const effect_uuid_t *pEffectUuid, int32_t sessionId, int32_t deviceId,
+        sp<EffectHalInterface> *effect) {
+    status_t status = NO_INIT;
+    sp<AudioFlinger> af = mAudioFlinger.promote();
+    if (af == nullptr) {
+        return status;
+    }
+    sp<EffectsFactoryHalInterface> effectsFactory = af->getEffectsFactory();
+    if (effectsFactory != 0) {
+        status = effectsFactory->createEffect(pEffectUuid, sessionId, io(), deviceId, effect);
+    }
+    return status;
+}
+
+bool AudioFlinger::EffectChain::EffectCallback::updateOrphanEffectChains(
+        const sp<AudioFlinger::EffectModule>& effect) {
+    sp<AudioFlinger> af = mAudioFlinger.promote();
+    if (af == nullptr) {
+        return false;
+    }
+    return af->updateOrphanEffectChains(effect);
+}
+
+status_t AudioFlinger::EffectChain::EffectCallback::allocateHalBuffer(
+        size_t size, sp<EffectBufferHalInterface>* buffer) {
+    sp<AudioFlinger> af = mAudioFlinger.promote();
+    LOG_ALWAYS_FATAL_IF(af == nullptr, "allocateHalBuffer() could not retrieved audio flinger");
+    return af->mEffectsFactoryHal->allocateBuffer(size, buffer);
+}
+
+status_t AudioFlinger::EffectChain::EffectCallback::addEffectToHal(
+        sp<EffectHalInterface> effect) {
+    status_t result = NO_INIT;
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return result;
+    }
+    sp <StreamHalInterface> st = t->stream();
+    if (st == nullptr) {
+        return result;
+    }
+    result = st->addEffect(effect);
+    ALOGE_IF(result != OK, "Error when adding effect: %d", result);
+    return result;
+}
+
+status_t AudioFlinger::EffectChain::EffectCallback::removeEffectFromHal(
+        sp<EffectHalInterface> effect) {
+    status_t result = NO_INIT;
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return result;
+    }
+    sp <StreamHalInterface> st = t->stream();
+    if (st == nullptr) {
+        return result;
+    }
+    result = st->removeEffect(effect);
+    ALOGE_IF(result != OK, "Error when removing effect: %d", result);
+    return result;
+}
+
+audio_io_handle_t AudioFlinger::EffectChain::EffectCallback::io() const {
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return AUDIO_IO_HANDLE_NONE;
+    }
+    return t->id();
+}
+
+bool AudioFlinger::EffectChain::EffectCallback::isOutput() const {
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return true;
+    }
+    return t->isOutput();
+}
+
+bool AudioFlinger::EffectChain::EffectCallback::isOffload() const {
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return false;
+    }
+    return t->type() == ThreadBase::OFFLOAD;
+}
+
+bool AudioFlinger::EffectChain::EffectCallback::isOffloadOrDirect() const {
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return false;
+    }
+    return t->type() == ThreadBase::OFFLOAD || t->type() == ThreadBase::DIRECT;
+}
+
+bool AudioFlinger::EffectChain::EffectCallback::isOffloadOrMmap() const {
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return false;
+    }
+    return t->type() == ThreadBase::OFFLOAD || t->type() == ThreadBase::MMAP;
+}
+
+uint32_t AudioFlinger::EffectChain::EffectCallback::sampleRate() const {
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return 0;
+    }
+    return t->sampleRate();
+}
+
+audio_channel_mask_t AudioFlinger::EffectChain::EffectCallback::channelMask() const {
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return AUDIO_CHANNEL_NONE;
+    }
+    return t->channelMask();
+}
+
+uint32_t AudioFlinger::EffectChain::EffectCallback::channelCount() const {
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return 0;
+    }
+    return t->channelCount();
+}
+
+size_t AudioFlinger::EffectChain::EffectCallback::frameCount() const {
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return 0;
+    }
+    return t->frameCount();
+}
+
+uint32_t AudioFlinger::EffectChain::EffectCallback::latency() const {
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return 0;
+    }
+    return t->latency_l();
+}
+
+void AudioFlinger::EffectChain::EffectCallback::setVolumeForOutput(float left, float right) const {
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return;
+    }
+    t->setVolumeForOutput_l(left, right);
+}
+
+void AudioFlinger::EffectChain::EffectCallback::checkSuspendOnEffectEnabled(
+        const sp<EffectModule>& effect, bool enabled, bool threadLocked) {
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return;
+    }
+    t->checkSuspendOnEffectEnabled(enabled, effect->sessionId(), threadLocked);
+
+    sp<EffectChain> c = mChain.promote();
+    if (c == nullptr) {
+        return;
+    }
+    c->checkSuspendOnEffectEnabled(effect, enabled);
+}
+
+void AudioFlinger::EffectChain::EffectCallback::onEffectEnable(const sp<EffectModule>& effect) {
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return;
+    }
+    t->onEffectEnable(effect);
+}
+
+void AudioFlinger::EffectChain::EffectCallback::onEffectDisable(const sp<EffectModule>& effect) {
+    checkSuspendOnEffectEnabled(effect, false, false /*threadLocked*/);
+
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return;
+    }
+    t->onEffectDisable();
+}
+
+bool AudioFlinger::EffectChain::EffectCallback::disconnectEffectHandle(EffectHandle *handle,
+                                                      bool unpinIfLast) {
+    sp<ThreadBase> t = mThread.promote();
+    if (t == nullptr) {
+        return false;
+    }
+    t->disconnectEffectHandle(handle, unpinIfLast);
+    return true;
+}
+
+void AudioFlinger::EffectChain::EffectCallback::resetVolume() {
+    sp<EffectChain> c = mChain.promote();
+    if (c == nullptr) {
+        return;
+    }
+    c->resetVolume_l();
+
+}
+
+uint32_t AudioFlinger::EffectChain::EffectCallback::strategy() const {
+    sp<EffectChain> c = mChain.promote();
+    if (c == nullptr) {
+        return PRODUCT_STRATEGY_NONE;
+    }
+    return c->strategy();
+}
+
+int32_t AudioFlinger::EffectChain::EffectCallback::activeTrackCnt() const {
+    sp<EffectChain> c = mChain.promote();
+    if (c == nullptr) {
+        return 0;
+    }
+    return c->activeTrackCnt();
+}
+
 } // namespace android
diff --git a/services/audioflinger/Effects.h b/services/audioflinger/Effects.h
index dbf63c8..0b0f9f5 100644
--- a/services/audioflinger/Effects.h
+++ b/services/audioflinger/Effects.h
@@ -21,11 +21,60 @@
 
 //--- Audio Effect Management
 
+// Interface implemented by the EffectModule parent or owner (e.g an EffectChain) to abstract
+// interactions between the EffectModule and the reset of the audio framework.
+class EffectCallbackInterface : public RefBase {
+public:
+            ~EffectCallbackInterface() override = default;
+
+    // Trivial methods usually implemented with help from ThreadBase
+    virtual audio_io_handle_t io() const = 0;
+    virtual bool isOutput() const = 0;
+    virtual bool isOffload() const = 0;
+    virtual bool isOffloadOrDirect() const = 0;
+    virtual bool isOffloadOrMmap() const = 0;
+    virtual uint32_t  sampleRate() const = 0;
+    virtual audio_channel_mask_t channelMask() const = 0;
+    virtual uint32_t channelCount() const = 0;
+    virtual size_t frameCount() const = 0;
+
+    // Non trivial methods usually implemented with help from ThreadBase:
+    //   pay attention to mutex locking order
+    virtual uint32_t latency() const { return 0; }
+    virtual status_t addEffectToHal(sp<EffectHalInterface> effect) = 0;
+    virtual status_t removeEffectFromHal(sp<EffectHalInterface> effect) = 0;
+    virtual void setVolumeForOutput(float left, float right) const = 0;
+    virtual bool disconnectEffectHandle(EffectHandle *handle, bool unpinIfLast) = 0;
+    virtual void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect,
+                                             bool enabled,
+                                             bool threadLocked) = 0;
+    virtual void onEffectEnable(const sp<EffectModule>& effect) = 0;
+    virtual void onEffectDisable(const sp<EffectModule>& effect) = 0;
+
+    // Methods usually implemented with help from AudioFlinger: pay attention to mutex locking order
+    virtual status_t createEffectHal(const effect_uuid_t *pEffectUuid,
+                    int32_t sessionId, int32_t deviceId, sp<EffectHalInterface> *effect) = 0;
+    virtual status_t allocateHalBuffer(size_t size, sp<EffectBufferHalInterface>* buffer) = 0;
+    virtual bool updateOrphanEffectChains(const sp<EffectModule>& effect) = 0;
+
+    // Methods usually implemented with help from EffectChain: pay attention to mutex locking order
+    virtual uint32_t strategy() const = 0;
+    virtual int32_t activeTrackCnt() const = 0;
+    virtual void resetVolume() = 0;
+
+    virtual wp<EffectChain> chain() const = 0;
+};
+
 // EffectModule and EffectChain classes both have their own mutex to protect
 // state changes or resource modifications. Always respect the following order
 // if multiple mutexes must be acquired to avoid cross deadlock:
 // AudioFlinger -> ThreadBase -> EffectChain -> EffectModule
 // AudioHandle -> ThreadBase -> EffectChain -> EffectModule
+
+// NOTE: When implementing the EffectCallbackInterface, in an EffectChain or other, it is important
+// to pay attention to this locking order as some callback methods can be called from a state where
+// EffectModule and/or EffectChain mutexes are held.
+
 // In addition, methods that lock the AudioPolicyService mutex (getOutputForEffect(),
 // startOutput(), getInputForAttr(), releaseInput()...) should never be called with AudioFlinger or
 // Threadbase mutex locked to avoid cross deadlock with other clients calling AudioPolicyService
@@ -42,8 +91,7 @@
 // the attached track(s) to accumulate their auxiliary channel.
 class EffectModule : public RefBase {
 public:
-    EffectModule(ThreadBase *thread,
-                    const wp<AudioFlinger::EffectChain>& chain,
+    EffectModule(const sp<EffectCallbackInterface>& chain,
                     effect_descriptor_t *desc,
                     int id,
                     audio_session_t sessionId,
@@ -81,7 +129,7 @@
     audio_session_t sessionId() const {
         return mSessionId;
     }
-    status_t    setEnabled(bool enabled);
+    status_t    setEnabled(bool enabled, bool fromHandle);
     status_t    setEnabled_l(bool enabled);
     bool isEnabled() const;
     bool isProcessEnabled() const;
@@ -96,10 +144,7 @@
     int16_t     *outBuffer() const {
         return mOutBuffer != 0 ? reinterpret_cast<int16_t*>(mOutBuffer->ptr()) : NULL;
     }
-    void        setChain(const wp<EffectChain>& chain) { mChain = chain; }
-    void        setThread(const wp<ThreadBase>& thread)
-                    { mThread = thread; mThreadType = thread.promote()->type(); }
-    const wp<ThreadBase>& thread() { return mThread; }
+    void        setCallback(const sp<EffectCallbackInterface>& callback) { mCallback = callback; }
 
     status_t addHandle(EffectHandle *handle);
     ssize_t  disconnectHandle(EffectHandle *handle, bool unpinIfLast);
@@ -107,7 +152,7 @@
     ssize_t removeHandle_l(EffectHandle *handle);
 
     const effect_descriptor_t& desc() const { return mDescriptor; }
-    wp<EffectChain>&     chain() { return mChain; }
+    sp<EffectCallbackInterface>&     callback() { return mCallback; }
 
     status_t         setDevices(const AudioDeviceTypeAddrVector &devices);
     status_t         setInputDevice(const AudioDeviceTypeAddr &device);
@@ -144,6 +189,7 @@
     void             release_l();
 
     status_t         updatePolicyState();
+    void             checkSuspendOnEffectEnabled(bool enabled, bool threadLocked);
 
     void             dump(int fd, const Vector<String16>& args);
 
@@ -158,13 +204,11 @@
 
     status_t start_l();
     status_t stop_l();
-    status_t remove_effect_from_hal_l();
+    status_t removeEffectFromHal_l();
     status_t sendSetAudioDevicesCommand(const AudioDeviceTypeAddrVector &devices, uint32_t cmdCode);
 
 mutable Mutex               mLock;      // mutex for process, commands and handles list protection
-    wp<ThreadBase>      mThread;    // parent thread
-    ThreadBase::type_t  mThreadType; // parent thread type
-    wp<EffectChain>     mChain;     // parent effect chain
+    sp<EffectCallbackInterface>     mCallback;     // parent effect chain
     const int           mId;        // this instance unique ID
     const audio_session_t mSessionId; // audio session ID
     const effect_descriptor_t mDescriptor;// effect descriptor received from effect engine
@@ -181,7 +225,6 @@
     uint32_t mDisableWaitCnt;       // current process() calls count during disable period.
     bool     mSuspended;            // effect is suspended: temporarily disabled by framework
     bool     mOffloaded;            // effect is currently offloaded to the audio DSP
-    wp<AudioFlinger>    mAudioFlinger;
 
 #ifdef FLOAT_EFFECT_CHAIN
     bool    mSupportsFloat;         // effect supports float processing
@@ -333,7 +376,6 @@
     }
 
     status_t createEffect_l(sp<EffectModule>& effect,
-                            ThreadBase *thread,
                             effect_descriptor_t *desc,
                             int id,
                             audio_session_t sessionId,
@@ -389,9 +431,8 @@
                               bool suspend);
     // suspend all eligible effects
     void setEffectSuspendedAll_l(bool suspend);
-    // check if effects should be suspend or restored when a given effect is enable or disabled
-    void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect,
-                                          bool enabled);
+    // check if effects should be suspended or restored when a given effect is enable or disabled
+    void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, bool enabled);
 
     void clearInputBuffer();
 
@@ -416,9 +457,60 @@
     // isCompatibleWithThread_l() must be called with thread->mLock held
     bool isCompatibleWithThread_l(const sp<ThreadBase>& thread) const;
 
+    sp<EffectCallbackInterface> effectCallback() const { return mEffectCallback; }
+    wp<ThreadBase> thread() const { return mEffectCallback->thread(); }
+
     void dump(int fd, const Vector<String16>& args);
 
 private:
+
+    class EffectCallback :  public EffectCallbackInterface {
+    public:
+        EffectCallback(EffectChain *chain, ThreadBase *thread, AudioFlinger *audioFlinger)
+            : mChain(chain), mThread(thread), mAudioFlinger(audioFlinger) {}
+
+        status_t createEffectHal(const effect_uuid_t *pEffectUuid,
+               int32_t sessionId, int32_t deviceId, sp<EffectHalInterface> *effect) override;
+        status_t allocateHalBuffer(size_t size, sp<EffectBufferHalInterface>* buffer) override;
+        bool updateOrphanEffectChains(const sp<EffectModule>& effect) override;
+
+        audio_io_handle_t io() const override;
+        bool isOutput() const override;
+        bool isOffload() const override;
+        bool isOffloadOrDirect() const override;
+        bool isOffloadOrMmap() const override;
+
+        uint32_t sampleRate() const override;
+        audio_channel_mask_t channelMask() const override;
+        uint32_t channelCount() const override;
+        size_t frameCount() const override;
+        uint32_t latency() const override;
+
+        status_t addEffectToHal(sp<EffectHalInterface> effect) override;
+        status_t removeEffectFromHal(sp<EffectHalInterface> effect) override;
+        bool disconnectEffectHandle(EffectHandle *handle, bool unpinIfLast) override;
+        void setVolumeForOutput(float left, float right) const override;
+
+        // check if effects should be suspended/restored when a given effect is enable/disabled
+        void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect,
+                              bool enabled, bool threadLocked) override;
+        void resetVolume() override;
+        uint32_t strategy() const override;
+        int32_t activeTrackCnt() const override;
+        void onEffectEnable(const sp<EffectModule>& effect) override;
+        void onEffectDisable(const sp<EffectModule>& effect) override;
+
+        wp<EffectChain> chain() const override { return mChain; }
+
+        wp<ThreadBase> thread() { return mThread; }
+        void setThread(ThreadBase *thread) { mThread = thread; };
+
+    private:
+        wp<EffectChain> mChain;
+        wp<ThreadBase> mThread;
+        wp<AudioFlinger> mAudioFlinger;
+    };
+
     friend class AudioFlinger;  // for mThread, mEffects
     DISALLOW_COPY_AND_ASSIGN(EffectChain);
 
@@ -444,13 +536,12 @@
 
     static bool isEffectEligibleForBtNrecSuspend(const effect_uuid_t *type);
 
-    void clearInputBuffer_l(const sp<ThreadBase>& thread);
+    void clearInputBuffer_l();
 
     void setThread(const sp<ThreadBase>& thread);
 
     void setVolumeForOutput_l(uint32_t left, uint32_t right);
 
-             wp<ThreadBase> mThread;     // parent mixer thread
     mutable  Mutex mLock;        // mutex protecting effect list
              Vector< sp<EffectModule> > mEffects; // list of effect modules
              audio_session_t mSessionId; // audio session ID
@@ -474,4 +565,6 @@
              // timeLow fields among effect type UUIDs.
              // Updated by setEffectSuspended_l() and setEffectSuspendedAll_l() only.
              KeyedVector< int, sp<SuspendedEffectDesc> > mSuspendedEffects;
+
+             const sp<EffectCallback> mEffectCallback;
 };
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 9a16a95..a6d6914 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -1146,18 +1146,13 @@
     }
 }
 
-void AudioFlinger::ThreadBase::checkSuspendOnEffectEnabled(const sp<EffectModule>& effect,
-                                                            bool enabled,
-                                                            audio_session_t sessionId)
-{
-    Mutex::Autolock _l(mLock);
-    checkSuspendOnEffectEnabled_l(effect, enabled, sessionId);
-}
+void AudioFlinger::ThreadBase::checkSuspendOnEffectEnabled(bool enabled,
+                                                           audio_session_t sessionId,
+                                                           bool threadLocked) {
+    if (!threadLocked) {
+        mLock.lock();
+    }
 
-void AudioFlinger::ThreadBase::checkSuspendOnEffectEnabled_l(const sp<EffectModule>& effect,
-                                                            bool enabled,
-                                                            audio_session_t sessionId)
-{
     if (mType != RECORD) {
         // suspend all effects in AUDIO_SESSION_OUTPUT_MIX when enabling any effect on
         // another session. This gives the priority to well behaved effect control panels
@@ -1169,9 +1164,8 @@
         }
     }
 
-    sp<EffectChain> chain = getEffectChain_l(sessionId);
-    if (chain != 0) {
-        chain->checkSuspendOnEffectEnabled(effect, enabled);
+    if (!threadLocked) {
+        mLock.unlock();
     }
 }
 
@@ -1379,7 +1373,7 @@
         if (effect == 0) {
             effectId = mAudioFlinger->nextUniqueId(AUDIO_UNIQUE_ID_USE_EFFECT);
             // create a new effect module if none present in the chain
-            lStatus = chain->createEffect_l(effect, this, desc, effectId, sessionId, pinned);
+            lStatus = chain->createEffect_l(effect, desc, effectId, sessionId, pinned);
             if (lStatus != NO_ERROR) {
                 goto Exit;
             }
@@ -1427,7 +1421,7 @@
         Mutex::Autolock _l(mLock);
 
         effect = handle->effect().promote();
-        if (effect == 0) {
+        if (effect == nullptr) {
             return;
         }
         // restore suspended effects if the disconnected handle was enabled and the last one.
@@ -1439,11 +1433,34 @@
     if (remove) {
         mAudioFlinger->updateOrphanEffectChains(effect);
         if (handle->enabled()) {
-            checkSuspendOnEffectEnabled(effect, false, effect->sessionId());
+            effect->checkSuspendOnEffectEnabled(false, false /*threadLocked*/);
         }
     }
 }
 
+void AudioFlinger::ThreadBase::onEffectEnable(const sp<EffectModule>& effect) {
+    if (mType == OFFLOAD || mType == MMAP) {
+        Mutex::Autolock _l(mLock);
+        broadcast_l();
+    }
+    if (!effect->isOffloadable()) {
+        if (mType == ThreadBase::OFFLOAD) {
+            PlaybackThread *t = (PlaybackThread *)this;
+            t->invalidateTracks(AUDIO_STREAM_MUSIC);
+        }
+        if (effect->sessionId() == AUDIO_SESSION_OUTPUT_MIX) {
+            mAudioFlinger->onNonOffloadableGlobalEffectEnable();
+        }
+    }
+}
+
+void AudioFlinger::ThreadBase::onEffectDisable() {
+    if (mType == OFFLOAD || mType == MMAP) {
+        Mutex::Autolock _l(mLock);
+        broadcast_l();
+    }
+}
+
 sp<AudioFlinger::EffectModule> AudioFlinger::ThreadBase::getEffect(audio_session_t sessionId,
         int effectId)
 {
@@ -1519,7 +1536,7 @@
         detachAuxEffect_l(effect->id());
     }
 
-    sp<EffectChain> chain = effect->chain().promote();
+    sp<EffectChain> chain = effect->callback()->chain().promote();
     if (chain != 0) {
         // remove effect chain if removing last effect
         if (chain->removeEffect_l(effect, release) == 0) {
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index ef7eb6e..f1adc23 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -271,6 +271,8 @@
                 // Called by AudioFlinger::frameCount(audio_io_handle_t output) and effects,
                 // and returns the [normal mix] buffer's frame count.
     virtual     size_t      frameCount() const = 0;
+    virtual     uint32_t    latency_l() const { return 0; }
+    virtual     void        setVolumeForOutput_l(float left __unused, float right __unused) const {}
 
                 // Return's the HAL's frame count i.e. fast mixer buffer size.
                 size_t      frameCountHAL() const { return mFrameCount; }
@@ -424,14 +426,9 @@
 
                 // check if some effects must be suspended/restored when an effect is enabled
                 // or disabled
-                void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect,
-                                                 bool enabled,
-                                                 audio_session_t sessionId =
-                                                        AUDIO_SESSION_OUTPUT_MIX);
-                void checkSuspendOnEffectEnabled_l(const sp<EffectModule>& effect,
-                                                   bool enabled,
-                                                   audio_session_t sessionId =
-                                                        AUDIO_SESSION_OUTPUT_MIX);
+                void checkSuspendOnEffectEnabled(bool enabled,
+                                                 audio_session_t sessionId,
+                                                 bool threadLocked);
 
                 virtual status_t    setSyncEvent(const sp<SyncEvent>& event) = 0;
                 virtual bool        isValidSyncEvent(const sp<SyncEvent>& event) const = 0;
@@ -465,6 +462,9 @@
 
     mutable     Mutex                   mLock;
 
+                void onEffectEnable(const sp<EffectModule>& effect);
+                void onEffectDisable();
+
 protected:
 
                 // entry describing an effect being suspended in mSuspendedSessions keyed vector
@@ -814,7 +814,7 @@
                 // return estimated latency in milliseconds, as reported by HAL
                 uint32_t    latency() const;
                 // same, but lock must already be held
-                uint32_t    latency_l() const;
+                uint32_t    latency_l() const override;
 
                 // VolumeInterface
     virtual     void        setMasterVolume(float value);
@@ -824,7 +824,7 @@
     virtual     void        setStreamMute(audio_stream_type_t stream, bool muted);
     virtual     float       streamVolume(audio_stream_type_t stream) const;
 
-                void        setVolumeForOutput_l(float left, float right) const;
+                void        setVolumeForOutput_l(float left, float right) const override;
 
                 sp<Track>   createTrack_l(
                                 const sp<AudioFlinger::Client>& client,
diff --git a/services/audiopolicy/AudioPolicyInterface.h b/services/audiopolicy/AudioPolicyInterface.h
index 00f14e1..c5cdc25 100644
--- a/services/audiopolicy/AudioPolicyInterface.h
+++ b/services/audiopolicy/AudioPolicyInterface.h
@@ -403,6 +403,12 @@
                                                 std::vector<effect_descriptor_t> effects,
                                                 audio_patch_handle_t patchHandle,
                                                 audio_source_t source) = 0;
+
+    // Used to notify the sound trigger module that an audio capture is about to
+    // take place. This should typically result in any active recognition
+    // sessions to be preempted on modules that do not support sound trigger
+    // recognition concurrently with audio capture.
+    virtual void setSoundTriggerCaptureState(bool active) = 0;
 };
 
 extern "C" AudioPolicyInterface* createAudioPolicyManager(AudioPolicyClientInterface *clientInterface);
diff --git a/services/audiopolicy/managerdefault/Android.bp b/services/audiopolicy/managerdefault/Android.bp
index 1fa0d19..577b42f 100644
--- a/services/audiopolicy/managerdefault/Android.bp
+++ b/services/audiopolicy/managerdefault/Android.bp
@@ -15,7 +15,6 @@
         "libutils",
         "liblog",
         "libaudiopolicy",
-        "libsoundtrigger",
         "libmedia_helper",
         "libmediametrics",
         "libbinder",
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index 9d80a16..2124646 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -46,7 +46,6 @@
 #include <utils/Log.h>
 #include <media/AudioParameter.h>
 #include <private/android_filesystem_config.h>
-#include <soundtrigger/SoundTrigger.h>
 #include <system/audio.h>
 #include "AudioPolicyManager.h"
 #include <Serializer.h>
@@ -2277,7 +2276,7 @@
         DeviceVector primaryInputDevices = availablePrimaryModuleInputDevices();
         if (primaryInputDevices.contains(device) &&
                 mInputs.activeInputsCountOnDevices(primaryInputDevices) == 1) {
-            SoundTrigger::setCaptureState(true);
+            mpClientInterface->setSoundTriggerCaptureState(true);
         }
 
         // automatically enable the remote submix output when input is started if not
@@ -2360,7 +2359,7 @@
         DeviceVector primaryInputDevices = availablePrimaryModuleInputDevices();
         if (primaryInputDevices.contains(inputDesc->getDevice()) &&
                 mInputs.activeInputsCountOnDevices(primaryInputDevices) == 0) {
-            SoundTrigger::setCaptureState(false);
+            mpClientInterface->setSoundTriggerCaptureState(false);
         }
         inputDesc->clearPreemptedSessions();
     }
@@ -5075,7 +5074,7 @@
     DeviceVector primaryInputDevices = availablePrimaryModuleInputDevices();
     if (primaryInputDevices.contains(device) &&
             mInputs.activeInputsCountOnDevices(primaryInputDevices) == 0) {
-        SoundTrigger::setCaptureState(false);
+        mpClientInterface->setSoundTriggerCaptureState(false);
     }
 
     cleanUpEffectsForIo(input);
diff --git a/services/audiopolicy/service/Android.mk b/services/audiopolicy/service/Android.mk
index fdf3eae..80f4eab 100644
--- a/services/audiopolicy/service/Android.mk
+++ b/services/audiopolicy/service/Android.mk
@@ -31,7 +31,8 @@
     libmediametrics \
     libmediautils \
     libeffectsconfig \
-    libsensorprivacy
+    libsensorprivacy \
+    soundtrigger_middleware-aidl-cpp
 
 LOCAL_EXPORT_SHARED_LIBRARY_HEADERS := \
     libsensorprivacy
diff --git a/services/audiopolicy/service/AudioPolicyClientImpl.cpp b/services/audiopolicy/service/AudioPolicyClientImpl.cpp
index 6de0c80..5b81b9d 100644
--- a/services/audiopolicy/service/AudioPolicyClientImpl.cpp
+++ b/services/audiopolicy/service/AudioPolicyClientImpl.cpp
@@ -17,10 +17,13 @@
 #define LOG_TAG "AudioPolicyClientImpl"
 //#define LOG_NDEBUG 0
 
-#include <soundtrigger/SoundTrigger.h>
-#include <utils/Log.h>
 #include "AudioPolicyService.h"
 
+#include <android/media/soundtrigger_middleware/ISoundTriggerMiddlewareService.h>
+#include <utils/Log.h>
+
+#include "BinderProxy.h"
+
 namespace android {
 
 /* implementation of the client interface from the policy manager */
@@ -239,4 +242,12 @@
     return AudioSystem::newAudioUniqueId(use);
 }
 
+void AudioPolicyService::AudioPolicyClient::setSoundTriggerCaptureState(bool active) {
+    using media::soundtrigger_middleware::ISoundTriggerMiddlewareService;
+
+    static BinderProxy<ISoundTriggerMiddlewareService>
+        proxy("soundtrigger_middleware");
+    proxy.waitServiceOrDie()->setExternalCaptureState(active);
+}
+
 } // namespace android
diff --git a/services/audiopolicy/service/AudioPolicyService.h b/services/audiopolicy/service/AudioPolicyService.h
index c6fff63..135b3ac 100644
--- a/services/audiopolicy/service/AudioPolicyService.h
+++ b/services/audiopolicy/service/AudioPolicyService.h
@@ -717,6 +717,8 @@
 
         virtual audio_unique_id_t newAudioUniqueId(audio_unique_id_use_t use);
 
+        void setSoundTriggerCaptureState(bool active) override;
+
      private:
         AudioPolicyService *mAudioPolicyService;
     };
diff --git a/services/audiopolicy/service/BinderProxy.h b/services/audiopolicy/service/BinderProxy.h
new file mode 100644
index 0000000..516e84d
--- /dev/null
+++ b/services/audiopolicy/service/BinderProxy.h
@@ -0,0 +1,96 @@
+/*
+ * 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 <mutex>
+#include <type_traits>
+#include <binder/IInterface.h>
+#include <binder/IServiceManager.h>
+#include <utils/Log.h>
+
+namespace android {
+
+// A simple utility that caches a proxy for a service and handles death notification.
+// Typically, intended to be used as a static-lifetime object.
+//
+// Example usage:
+// static BinderProxy<IMyInterface> myInterface("my_interface_svc");
+// ...
+// myInterface.waitServiceOrDie()->doSomething();
+//
+// If the service is unavailable, will wait until it becomes available.
+// Will die if the service doesn't implement the requested interface, or cannot be used for
+// permission reasons.
+template<typename ServiceType>
+class BinderProxy {
+public:
+    static_assert(std::is_base_of_v<IInterface, ServiceType>,
+                  "Service type must be a sub-type of IInterface.");
+
+    explicit BinderProxy(std::string_view serviceName)
+            : mServiceName(serviceName), mDeathRecipient(new DeathRecipient(this)) {}
+
+    ~BinderProxy() {
+        if (mDelegate != nullptr) {
+            sp<IBinder> binder = IInterface::asBinder(mDelegate);
+            if (binder != nullptr) {
+                binder->unlinkToDeath(mDeathRecipient);
+            }
+        }
+    }
+
+    sp<ServiceType> waitServiceOrDie() {
+        std::lock_guard<std::mutex> _l(mDelegateMutex);
+        if (mDelegate == nullptr) {
+            mDelegate = waitForService<ServiceType>(String16(mServiceName.c_str()));
+            LOG_ALWAYS_FATAL_IF(mDelegate == nullptr,
+                                "Service %s doesn't implement the required interface.",
+                                mServiceName.c_str());
+            sp<IBinder> binder = IInterface::asBinder(mDelegate);
+            if (binder != nullptr) {
+                binder->linkToDeath(mDeathRecipient);
+            }
+        }
+        return mDelegate;
+    }
+
+private:
+    sp<ServiceType> mDelegate;
+    std::mutex mDelegateMutex;
+    const std::string mServiceName;
+    sp<IBinder::DeathRecipient> mDeathRecipient;
+
+    class DeathRecipient : public IBinder::DeathRecipient {
+    public:
+        DeathRecipient(BinderProxy* proxy) : mProxy(proxy) {}
+
+        void binderDied(const wp<IBinder>&) override {
+            mProxy->binderDied();
+        }
+
+    private:
+        BinderProxy* const mProxy;
+    };
+
+    void binderDied() {
+        std::lock_guard<std::mutex> _l(mDelegateMutex);
+        mDelegate.clear();
+        ALOGW("Binder died: %s", mServiceName.c_str());
+    }
+};
+
+}  // namespace android
diff --git a/services/audiopolicy/tests/AudioPolicyTestClient.h b/services/audiopolicy/tests/AudioPolicyTestClient.h
index b92a2e6..c628e70 100644
--- a/services/audiopolicy/tests/AudioPolicyTestClient.h
+++ b/services/audiopolicy/tests/AudioPolicyTestClient.h
@@ -86,6 +86,7 @@
     void setEffectSuspended(int effectId __unused,
                             audio_session_t sessionId __unused,
                             bool suspended __unused) {}
+    void setSoundTriggerCaptureState(bool active __unused) override {};
 };
 
 } // namespace android
diff --git a/services/camera/libcameraservice/Android.bp b/services/camera/libcameraservice/Android.bp
index c50a3c6..9cc15cd 100644
--- a/services/camera/libcameraservice/Android.bp
+++ b/services/camera/libcameraservice/Android.bp
@@ -26,6 +26,7 @@
         "CameraFlashlight.cpp",
         "common/Camera2ClientBase.cpp",
         "common/CameraDeviceBase.cpp",
+        "common/CameraOfflineSessionBase.cpp",
         "common/CameraProviderManager.cpp",
         "common/FrameProcessorBase.cpp",
         "api1/CameraClient.cpp",
@@ -45,6 +46,7 @@
         "api2/HeicCompositeStream.cpp",
         "device1/CameraHardwareInterface.cpp",
         "device3/Camera3Device.cpp",
+        "device3/Camera3OfflineSession.cpp",
         "device3/Camera3Stream.cpp",
         "device3/Camera3IOStreamBase.cpp",
         "device3/Camera3InputStream.cpp",
@@ -110,6 +112,7 @@
         "android.hardware.camera.device@3.3",
         "android.hardware.camera.device@3.4",
         "android.hardware.camera.device@3.5",
+        "android.hardware.camera.device@3.6"
     ],
 
     export_shared_lib_headers: [
diff --git a/services/camera/libcameraservice/CameraService.cpp b/services/camera/libcameraservice/CameraService.cpp
index b704573..18ed3a5 100644
--- a/services/camera/libcameraservice/CameraService.cpp
+++ b/services/camera/libcameraservice/CameraService.cpp
@@ -2776,6 +2776,20 @@
 
 // ----------------------------------------------------------------------------
 
+sp<CameraService> CameraService::OfflineClient::sCameraService;
+
+status_t CameraService::OfflineClient::startCameraOps() {
+    // TODO
+    return OK;
+}
+
+status_t CameraService::OfflineClient::finishCameraOps() {
+    // TODO
+    return OK;
+}
+
+// ----------------------------------------------------------------------------
+
 void CameraService::Client::notifyError(int32_t errorCode,
         const CaptureResultExtras& resultExtras) {
     (void) resultExtras;
diff --git a/services/camera/libcameraservice/CameraService.h b/services/camera/libcameraservice/CameraService.h
index 1f40fc3..dae9c09 100644
--- a/services/camera/libcameraservice/CameraService.h
+++ b/services/camera/libcameraservice/CameraService.h
@@ -71,6 +71,7 @@
 public:
     class Client;
     class BasicClient;
+    class OfflineClient;
 
     // The effective API level.  The Camera2 API running in LEGACY mode counts as API_1.
     enum apiLevel {
@@ -401,6 +402,87 @@
         int mCameraId;  // All API1 clients use integer camera IDs
     }; // class Client
 
+
+    // Client for offline session. Note that offline session client does not affect camera service's
+    // client arbitration logic. It is camera HAL's decision to decide whether a normal camera
+    // client is conflicting with existing offline client(s).
+    // The other distinctive difference between offline clients and normal clients is that normal
+    // clients are created through ICameraService binder calls, while the offline session client
+    // is created through ICameraDeviceUser::switchToOffline call.
+    class OfflineClient : public virtual RefBase {
+
+        virtual status_t dump(int fd, const Vector<String16>& args) = 0;
+
+        // Block the client form using the camera
+        virtual void block() = 0;
+
+        // Return the package name for this client
+        virtual String16 getPackageName() const = 0;
+
+        // Notify client about a fatal error
+        // TODO: maybe let impl notify within block?
+        virtual void notifyError(int32_t errorCode,
+                const CaptureResultExtras& resultExtras) = 0;
+
+        // Get the UID of the application client using this
+        virtual uid_t getClientUid() const = 0;
+
+        // Get the PID of the application client using this
+        virtual int getClientPid() const = 0;
+
+        protected:
+            OfflineClient(const sp<CameraService>& cameraService,
+                    const String16& clientPackageName,
+                    const String8& cameraIdStr,
+                    int clientPid,
+                    uid_t clientUid,
+                    int servicePid): mCameraIdStr(cameraIdStr),
+                            mClientPackageName(clientPackageName), mClientPid(clientPid),
+                            mClientUid(clientUid), mServicePid(servicePid) {
+                if (sCameraService == nullptr) {
+                    sCameraService = cameraService;
+                }
+            }
+
+            virtual ~OfflineClient() { /*TODO*/ }
+
+            // these are initialized in the constructor.
+            static sp<CameraService>        sCameraService;
+            const String8                   mCameraIdStr;
+            String16                        mClientPackageName;
+            pid_t                           mClientPid;
+            const uid_t                     mClientUid;
+            const pid_t                     mServicePid;
+            bool                            mDisconnected;
+
+            // - The app-side Binder interface to receive callbacks from us
+            sp<IBinder>                     mRemoteBinder;   // immutable after constructor
+
+            // permissions management
+            status_t                        startCameraOps();
+            status_t                        finishCameraOps();
+
+        private:
+            std::unique_ptr<AppOpsManager>  mAppOpsManager = nullptr;
+
+            class OpsCallback : public BnAppOpsCallback {
+            public:
+                explicit OpsCallback(wp<OfflineClient> client) : mClient(client) {}
+                virtual void opChanged(int32_t /*op*/, const String16& /*packageName*/) {
+                    //TODO
+                }
+
+            private:
+                wp<OfflineClient> mClient;
+
+            }; // class OpsCallback
+
+            sp<OpsCallback> mOpsCallback;
+
+            // IAppOpsCallback interface, indirected through opListener
+            // virtual void opChanged(int32_t op, const String16& packageName);
+    }; // class OfflineClient
+
     /**
      * A listener class that implements the LISTENER interface for use with a ClientManager, and
      * implements the following methods:
diff --git a/services/camera/libcameraservice/api2/CameraDeviceClient.cpp b/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
index 27bebde..28421ba 100644
--- a/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
+++ b/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
@@ -1901,6 +1901,80 @@
     return binder::Status::ok();
 }
 
+binder::Status CameraDeviceClient::switchToOffline(
+        const sp<hardware::camera2::ICameraDeviceCallbacks>& cameraCb,
+        const std::vector<view::Surface>& offlineOutputs,
+        /*out*/
+        sp<hardware::camera2::ICameraOfflineSession>* session) {
+    ATRACE_CALL();
+
+    binder::Status res;
+    if (!(res = checkPidStatus(__FUNCTION__)).isOk()) return res;
+
+    Mutex::Autolock icl(mBinderSerializationLock);
+
+    if (!mDevice.get()) {
+        return STATUS_ERROR(CameraService::ERROR_DISCONNECTED, "Camera device no longer alive");
+    }
+
+    if (offlineOutputs.empty()) {
+        String8 msg = String8::format("Offline outputs must not be empty");
+        ALOGE("%s: %s", __FUNCTION__, msg.string());
+        return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, msg.string());
+    }
+
+    if (session == nullptr) {
+        String8 msg = String8::format("Invalid offline session");
+        ALOGE("%s: %s", __FUNCTION__, msg.string());
+        return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, msg.string());
+    }
+
+    std::vector<int32_t> offlineStreamIds(offlineOutputs.size());
+    for (auto& surface : offlineOutputs) {
+        sp<IBinder> binder = IInterface::asBinder(surface.graphicBufferProducer);
+        ssize_t index = mStreamMap.indexOfKey(binder);
+        if (index == NAME_NOT_FOUND) {
+            String8 msg = String8::format("Offline output is invalid");
+            ALOGE("%s: %s", __FUNCTION__, msg.string());
+            return STATUS_ERROR(CameraService::ERROR_ILLEGAL_ARGUMENT, msg.string());
+        }
+        // TODO: Also check whether the offline output is supported by Hal for offline mode.
+
+        sp<Surface> s = new Surface(surface.graphicBufferProducer);
+        bool isCompositeStream = camera3::DepthCompositeStream::isDepthCompositeStream(s);
+        isCompositeStream |= camera3::HeicCompositeStream::isHeicCompositeStream(s);
+        if (isCompositeStream) {
+            // TODO: Add composite specific handling
+        } else {
+            offlineStreamIds.push_back(mStreamMap.valueAt(index).streamId());
+        }
+    }
+
+    sp<CameraOfflineSessionBase> offlineSession;
+    auto ret = mDevice->switchToOffline(offlineStreamIds, &offlineSession);
+    if (ret != OK) {
+        return STATUS_ERROR_FMT(CameraService::ERROR_ILLEGAL_ARGUMENT,
+                "Camera %s: Error switching to offline mode: %s (%d)",
+                mCameraIdStr.string(), strerror(ret), ret);
+    }
+
+    sp<CameraOfflineSessionClient> offlineClient = new CameraOfflineSessionClient(sCameraService,
+            offlineSession, cameraCb, mClientPackageName, mCameraIdStr, mClientPid, mClientUid,
+            mServicePid);
+    ret = offlineClient->initialize();
+    if (ret == OK) {
+        // TODO: We need to update mStreamMap, mConfiguredOutputs
+    } else {
+        return STATUS_ERROR_FMT(CameraService::ERROR_ILLEGAL_ARGUMENT,
+                "Camera %s: Failed to initilize offline session: %s (%d)",
+                mCameraIdStr.string(), strerror(ret), ret);
+    }
+
+    *session = offlineClient;
+
+    return binder::Status::ok();
+}
+
 status_t CameraDeviceClient::dump(int fd, const Vector<String16>& args) {
     return BasicClient::dump(fd, args);
 }
diff --git a/services/camera/libcameraservice/api2/CameraDeviceClient.h b/services/camera/libcameraservice/api2/CameraDeviceClient.h
index 7efc5ab..0a8f377 100644
--- a/services/camera/libcameraservice/api2/CameraDeviceClient.h
+++ b/services/camera/libcameraservice/api2/CameraDeviceClient.h
@@ -23,6 +23,7 @@
 #include <camera/camera2/SessionConfiguration.h>
 #include <camera/camera2/SubmitInfo.h>
 
+#include "CameraOfflineSessionClient.h"
 #include "CameraService.h"
 #include "common/FrameProcessorBase.h"
 #include "common/Camera2ClientBase.h"
@@ -157,6 +158,12 @@
 
     virtual binder::Status getGlobalAudioRestriction(/*out*/int32_t* outMode) override;
 
+    virtual binder::Status switchToOffline(
+            const sp<hardware::camera2::ICameraDeviceCallbacks>& cameraCb,
+            const std::vector<view::Surface>& offlineOutputs,
+            /*out*/
+            sp<hardware::camera2::ICameraOfflineSession>* session) override;
+
     /**
      * Interface used by CameraService
      */
diff --git a/services/camera/libcameraservice/api2/CameraOfflineSessionClient.h b/services/camera/libcameraservice/api2/CameraOfflineSessionClient.h
new file mode 100644
index 0000000..cb83e29
--- /dev/null
+++ b/services/camera/libcameraservice/api2/CameraOfflineSessionClient.h
@@ -0,0 +1,85 @@
+/*
+ * 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_SERVERS_CAMERA_PHOTOGRAPHY_CAMERAOFFLINESESSIONCLIENT_H
+#define ANDROID_SERVERS_CAMERA_PHOTOGRAPHY_CAMERAOFFLINESESSIONCLIENT_H
+
+#include <android/hardware/camera2/BnCameraOfflineSession.h>
+#include <android/hardware/camera2/ICameraDeviceCallbacks.h>
+#include "CameraService.h"
+
+namespace android {
+
+using android::hardware::camera2::ICameraDeviceCallbacks;
+
+class CameraOfflineSessionClient :
+        public CameraService::OfflineClient,
+        public hardware::camera2::BnCameraOfflineSession
+        // public camera2::FrameProcessorBase::FilteredListener?
+{
+public:
+    CameraOfflineSessionClient(
+            const sp<CameraService>& cameraService,
+            sp<CameraOfflineSessionBase> session,
+            const sp<ICameraDeviceCallbacks>& remoteCallback,
+            const String16& clientPackageName,
+            const String8& cameraIdStr,
+            int clientPid, uid_t clientUid, int servicePid) :
+                    CameraService::OfflineClient(cameraService, clientPackageName,
+                            cameraIdStr, clientPid, clientUid, servicePid),
+                            mRemoteCallback(remoteCallback), mOfflineSession(session) {}
+
+    ~CameraOfflineSessionClient() {}
+
+    virtual binder::Status disconnect() override { return binder::Status::ok(); }
+
+    virtual status_t dump(int /*fd*/, const Vector<String16>& /*args*/) override {
+        return OK;
+    }
+
+    // Block the client form using the camera
+    virtual void block() override {};
+
+    // Return the package name for this client
+    virtual String16 getPackageName() const override { String16 ret; return ret; };
+
+    // Notify client about a fatal error
+    // TODO: maybe let impl notify within block?
+    virtual void notifyError(int32_t /*errorCode*/,
+            const CaptureResultExtras& /*resultExtras*/) override {}
+
+    // Get the UID of the application client using this
+    virtual uid_t getClientUid() const override { return 0; }
+
+    // Get the PID of the application client using this
+    virtual int getClientPid() const override { return 0; }
+
+    status_t initialize() {
+        // TODO: Talk to camera service to add the offline session client book keeping
+        return OK;
+    }
+private:
+    sp<CameraOfflineSessionBase> mSession;
+
+    sp<hardware::camera2::ICameraDeviceCallbacks> mRemoteCallback;
+    // This class is responsible to convert HAL callbacks to AIDL callbacks
+
+    sp<CameraOfflineSessionBase> mOfflineSession;
+};
+
+} // namespace android
+
+#endif // ANDROID_SERVERS_CAMERA_PHOTOGRAPHY_CAMERAOFFLINESESSIONCLIENT_H
diff --git a/services/camera/libcameraservice/common/CameraDeviceBase.h b/services/camera/libcameraservice/common/CameraDeviceBase.h
index 935bc37..1026fdf 100644
--- a/services/camera/libcameraservice/common/CameraDeviceBase.h
+++ b/services/camera/libcameraservice/common/CameraDeviceBase.h
@@ -35,6 +35,8 @@
 #include "device3/Camera3StreamInterface.h"
 #include "binder/Status.h"
 
+#include "CameraOfflineSessionBase.h"
+
 namespace android {
 
 class CameraProviderManager;
@@ -389,6 +391,13 @@
      * requests to complete, based on their settings
      */
     virtual nsecs_t getExpectedInFlightDuration() = 0;
+
+    /**
+     * switch to offline session
+     */
+    virtual status_t switchToOffline(
+            const std::vector<int32_t>& streamsToKeep,
+            /*out*/ sp<CameraOfflineSessionBase>* session) = 0;
 };
 
 }; // namespace android
diff --git a/services/camera/libcameraservice/common/CameraOfflineSessionBase.cpp b/services/camera/libcameraservice/common/CameraOfflineSessionBase.cpp
new file mode 100644
index 0000000..ff673a9
--- /dev/null
+++ b/services/camera/libcameraservice/common/CameraOfflineSessionBase.cpp
@@ -0,0 +1,27 @@
+/*
+ * 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 "CameraOfflineSessionBase.h"
+
+namespace android {
+
+/**
+ * Base class destructors
+ */
+CameraOfflineSessionBase::~CameraOfflineSessionBase() {
+}
+
+} // namespace android
diff --git a/services/camera/libcameraservice/common/CameraOfflineSessionBase.h b/services/camera/libcameraservice/common/CameraOfflineSessionBase.h
new file mode 100644
index 0000000..3862521
--- /dev/null
+++ b/services/camera/libcameraservice/common/CameraOfflineSessionBase.h
@@ -0,0 +1,53 @@
+/*
+ * 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_SERVERS_CAMERA_CAMERAOFFLINESESSIONBASE_H
+#define ANDROID_SERVERS_CAMERA_CAMERAOFFLINESESSIONBASE_H
+
+#include <utils/RefBase.h>
+#include <utils/String8.h>
+#include <utils/Timers.h>
+
+#include "camera/CaptureResult.h"
+
+namespace android {
+
+class CameraOfflineSessionBase : public virtual RefBase {
+  public:
+    virtual ~CameraOfflineSessionBase();
+
+    // The session's original camera ID
+    virtual const String8& getId() const = 0;
+
+    virtual status_t disconnect() = 0;
+
+    virtual status_t dump(int fd) = 0;
+
+    virtual status_t abort() = 0;
+
+    /**
+     * Capture result passing
+     */
+    virtual status_t waitForNextFrame(nsecs_t timeout) = 0;
+
+    virtual status_t getNextResult(CaptureResult *frame) = 0;
+
+    // TODO: notification passing path
+}; // class CameraOfflineSessionBase
+
+} // namespace android
+
+#endif
diff --git a/services/camera/libcameraservice/device3/Camera3Device.cpp b/services/camera/libcameraservice/device3/Camera3Device.cpp
index 2541365..4e5c8d6 100644
--- a/services/camera/libcameraservice/device3/Camera3Device.cpp
+++ b/services/camera/libcameraservice/device3/Camera3Device.cpp
@@ -58,6 +58,7 @@
 #include "device3/Camera3InputStream.h"
 #include "device3/Camera3DummyStream.h"
 #include "device3/Camera3SharedOutputStream.h"
+#include "device3/Camera3OfflineSession.h"
 #include "CameraService.h"
 #include "utils/CameraThreadState.h"
 
@@ -206,7 +207,15 @@
             ANDROID_INFO_SUPPORTED_BUFFER_MANAGEMENT_VERSION_HIDL_DEVICE_3_5);
     }
 
-    mInterface = new HalInterface(session, queue, mUseHalBufManager);
+    camera_metadata_entry_t capabilities = mDeviceInfo.find(ANDROID_REQUEST_AVAILABLE_CAPABILITIES);
+    for (size_t i = 0; i < capabilities.count; i++) {
+        uint8_t capability = capabilities.data.u8[i];
+        if (capability == ANDROID_REQUEST_AVAILABLE_CAPABILITIES_OFFLINE_PROCESSING) {
+            mSupportOfflineProcessing = true;
+        }
+    }
+
+    mInterface = new HalInterface(session, queue, mUseHalBufManager, mSupportOfflineProcessing);
     std::string providerType;
     mVendorTagId = manager->getProviderTagIdLocked(mId.string());
     mTagMonitor.initialize(mVendorTagId);
@@ -227,9 +236,8 @@
             maxVersion.get_major(), maxVersion.get_minor());
 
     bool isMonochrome = false;
-    camera_metadata_entry_t entry = mDeviceInfo.find(ANDROID_REQUEST_AVAILABLE_CAPABILITIES);
-    for (size_t i = 0; i < entry.count; i++) {
-        uint8_t capability = entry.data.u8[i];
+    for (size_t i = 0; i < capabilities.count; i++) {
+        uint8_t capability = capabilities.data.u8[i];
         if (capability == ANDROID_REQUEST_AVAILABLE_CAPABILITIES_MONOCHROME) {
             isMonochrome = true;
         }
@@ -4045,13 +4053,18 @@
 Camera3Device::HalInterface::HalInterface(
             sp<ICameraDeviceSession> &session,
             std::shared_ptr<RequestMetadataQueue> queue,
-            bool useHalBufManager) :
+            bool useHalBufManager, bool supportOfflineProcessing) :
         mHidlSession(session),
         mRequestMetadataQueue(queue),
         mUseHalBufManager(useHalBufManager),
-        mIsReconfigurationQuerySupported(true) {
+        mIsReconfigurationQuerySupported(true),
+        mSupportOfflineProcessing(supportOfflineProcessing) {
     // Check with hardware service manager if we can downcast these interfaces
     // Somewhat expensive, so cache the results at startup
+    auto castResult_3_6 = device::V3_6::ICameraDeviceSession::castFrom(mHidlSession);
+    if (castResult_3_6.isOk()) {
+        mHidlSession_3_6 = castResult_3_6;
+    }
     auto castResult_3_5 = device::V3_5::ICameraDeviceSession::castFrom(mHidlSession);
     if (castResult_3_5.isOk()) {
         mHidlSession_3_5 = castResult_3_5;
@@ -4066,18 +4079,22 @@
     }
 }
 
-Camera3Device::HalInterface::HalInterface() : mUseHalBufManager(false) {}
+Camera3Device::HalInterface::HalInterface() :
+        mUseHalBufManager(false),
+        mSupportOfflineProcessing(false) {}
 
 Camera3Device::HalInterface::HalInterface(const HalInterface& other) :
         mHidlSession(other.mHidlSession),
         mRequestMetadataQueue(other.mRequestMetadataQueue),
-        mUseHalBufManager(other.mUseHalBufManager) {}
+        mUseHalBufManager(other.mUseHalBufManager),
+        mSupportOfflineProcessing(other.mSupportOfflineProcessing) {}
 
 bool Camera3Device::HalInterface::valid() {
     return (mHidlSession != nullptr);
 }
 
 void Camera3Device::HalInterface::clear() {
+    mHidlSession_3_6.clear();
     mHidlSession_3_5.clear();
     mHidlSession_3_4.clear();
     mHidlSession_3_3.clear();
@@ -4753,6 +4770,38 @@
     }
 }
 
+status_t Camera3Device::HalInterface::switchToOffline(
+        const std::vector<int32_t>& streamsToKeep,
+        /*out*/hardware::camera::device::V3_6::CameraOfflineSessionInfo* offlineSessionInfo,
+        /*out*/sp<hardware::camera::device::V3_6::ICameraOfflineSession>* offlineSession) {
+    ATRACE_NAME("CameraHal::switchToOffline");
+    if (!valid() || mHidlSession_3_6 == nullptr) {
+        ALOGE("%s called on invalid camera!", __FUNCTION__);
+        return INVALID_OPERATION;
+    }
+
+    if (offlineSessionInfo == nullptr || offlineSession == nullptr) {
+        ALOGE("%s: offlineSessionInfo and offlineSession must not be null!", __FUNCTION__);
+        return INVALID_OPERATION;
+    }
+
+    common::V1_0::Status status = common::V1_0::Status::INTERNAL_ERROR;
+
+    auto resultCallback =
+        [&status, &offlineSessionInfo, &offlineSession] (auto s, auto info, auto session) {
+                status = s;
+                *offlineSessionInfo = info;
+                *offlineSession = session;
+        };
+    auto err = mHidlSession_3_6->switchToOffline(streamsToKeep, resultCallback);
+
+    if (!err.isOk()) {
+        ALOGE("%s: Transaction error: %s", __FUNCTION__, err.description().c_str());
+        return DEAD_OBJECT;
+    }
+    return CameraProviderManager::mapToStatusT(status);
+}
+
 void Camera3Device::HalInterface::getInflightBufferKeys(
         std::vector<std::pair<int32_t, int32_t>>* out) {
     std::lock_guard<std::mutex> lock(mInflightLock);
@@ -5524,6 +5573,7 @@
         Mutex::Autolock l(mRequestLock);
         mNextRequests.clear();
     }
+    mRequestSubmittedSignal.signal();
 
     return submitRequestSuccess;
 }
@@ -5903,6 +5953,32 @@
     mStreamIdsToBeDrained = streamIds;
 }
 
+status_t Camera3Device::RequestThread::switchToOffline(
+        const std::vector<int32_t>& streamsToKeep,
+        /*out*/hardware::camera::device::V3_6::CameraOfflineSessionInfo* offlineSessionInfo,
+        /*out*/sp<hardware::camera::device::V3_6::ICameraOfflineSession>* offlineSession) {
+    Mutex::Autolock l(mRequestLock);
+    clearRepeatingRequestsLocked(/*lastFrameNumber*/nullptr);
+
+    // Theoretically we should also check for mRepeatingRequests.empty(), but the API interface
+    // is serialized by mInterfaceLock so skip that check.
+    bool queueEmpty = mNextRequests.empty() && mRequestQueue.empty();
+    while (!queueEmpty) {
+        status_t res = mRequestSubmittedSignal.waitRelative(mRequestLock, kRequestSubmitTimeout);
+        if (res == TIMED_OUT) {
+            ALOGE("%s: request thread failed to submit a request within timeout!", __FUNCTION__);
+            return res;
+        } else if (res != OK) {
+            ALOGE("%s: request thread failed to submit a request: %s (%d)!",
+                    __FUNCTION__, strerror(-res), res);
+            return res;
+        }
+        queueEmpty = mNextRequests.empty() && mRequestQueue.empty();
+    }
+    return mInterface->switchToOffline(
+            streamsToKeep, offlineSessionInfo, offlineSession);
+}
+
 nsecs_t Camera3Device::getExpectedInFlightDuration() {
     ATRACE_CALL();
     Mutex::Autolock al(mInFlightLock);
@@ -6812,4 +6888,34 @@
     return res;
 }
 
+status_t Camera3Device::switchToOffline(
+        const std::vector<int32_t>& streamsToKeep,
+        /*out*/ sp<CameraOfflineSessionBase>* session) {
+    ATRACE_CALL();
+    if (session == nullptr) {
+        ALOGE("%s: session must not be null", __FUNCTION__);
+        return BAD_VALUE;
+    }
+
+    Mutex::Autolock il(mInterfaceLock);
+    Mutex::Autolock l(mLock);
+
+    // 1. Stop repeating request, wait until request thread submitted all requests, then
+    //    call HAL switchToOffline
+    hardware::camera::device::V3_6::CameraOfflineSessionInfo offlineSessionInfo;
+    sp<hardware::camera::device::V3_6::ICameraOfflineSession> offlineSession;
+
+    mRequestThread->switchToOffline(streamsToKeep, &offlineSessionInfo, &offlineSession);
+
+
+    // 2. Verify offlineSessionInfo
+    // 3. create Camera3OfflineSession and transfer object ownership
+    //   (streams, inflight requests, buffer caches)
+    *session = new Camera3OfflineSession(mId);
+
+    // 4. Delete unneeded streams
+    // 5. Verify Camera3Device is in unconfigured state
+    return OK;
+}
+
 }; // namespace android
diff --git a/services/camera/libcameraservice/device3/Camera3Device.h b/services/camera/libcameraservice/device3/Camera3Device.h
index 2573b48..eabc44d 100644
--- a/services/camera/libcameraservice/device3/Camera3Device.h
+++ b/services/camera/libcameraservice/device3/Camera3Device.h
@@ -34,6 +34,7 @@
 #include <android/hardware/camera/device/3.3/ICameraDeviceSession.h>
 #include <android/hardware/camera/device/3.4/ICameraDeviceSession.h>
 #include <android/hardware/camera/device/3.5/ICameraDeviceSession.h>
+#include <android/hardware/camera/device/3.6/ICameraDeviceSession.h>
 #include <android/hardware/camera/device/3.2/ICameraDeviceCallback.h>
 #include <android/hardware/camera/device/3.4/ICameraDeviceCallback.h>
 #include <android/hardware/camera/device/3.5/ICameraDeviceCallback.h>
@@ -196,6 +197,9 @@
 
     nsecs_t getExpectedInFlightDuration() override;
 
+    status_t switchToOffline(const std::vector<int32_t>& streamsToKeep,
+            /*out*/ sp<CameraOfflineSessionBase>* session) override;
+
     /**
      * Helper functions to map between framework and HIDL values
      */
@@ -282,7 +286,7 @@
       public:
         HalInterface(sp<hardware::camera::device::V3_2::ICameraDeviceSession> &session,
                      std::shared_ptr<RequestMetadataQueue> queue,
-                     bool useHalBufManager);
+                     bool useHalBufManager, bool supportOfflineProcessing);
         HalInterface(const HalInterface &other);
         HalInterface();
 
@@ -316,6 +320,11 @@
         bool isReconfigurationRequired(CameraMetadata& oldSessionParams,
                 CameraMetadata& newSessionParams);
 
+        status_t switchToOffline(
+                const std::vector<int32_t>& streamsToKeep,
+                /*out*/hardware::camera::device::V3_6::CameraOfflineSessionInfo* offlineSessionInfo,
+                /*out*/sp<hardware::camera::device::V3_6::ICameraOfflineSession>* offlineSession);
+
         // method to extract buffer's unique ID
         // return pair of (newlySeenBuffer?, bufferId)
         std::pair<bool, uint64_t> getBufferId(const buffer_handle_t& buf, int streamId);
@@ -352,6 +361,8 @@
         sp<hardware::camera::device::V3_4::ICameraDeviceSession> mHidlSession_3_4;
         // Valid if ICameraDeviceSession is @3.5 or newer
         sp<hardware::camera::device::V3_5::ICameraDeviceSession> mHidlSession_3_5;
+        // Valid if ICameraDeviceSession is @3.6 or newer
+        sp<hardware::camera::device::V3_6::ICameraDeviceSession> mHidlSession_3_6;
 
         std::shared_ptr<RequestMetadataQueue> mRequestMetadataQueue;
 
@@ -424,6 +435,8 @@
 
         const bool mUseHalBufManager;
         bool mIsReconfigurationQuerySupported;
+
+        const bool mSupportOfflineProcessing;
     };
 
     sp<HalInterface> mInterface;
@@ -842,6 +855,11 @@
 
         void signalPipelineDrain(const std::vector<int>& streamIds);
 
+        status_t switchToOffline(
+                const std::vector<int32_t>& streamsToKeep,
+                /*out*/hardware::camera::device::V3_6::CameraOfflineSessionInfo* offlineSessionInfo,
+                /*out*/sp<hardware::camera::device::V3_6::ICameraOfflineSession>* offlineSession);
+
       protected:
 
         virtual bool threadLoop();
@@ -862,6 +880,9 @@
 
         static const nsecs_t kRequestTimeout = 50e6; // 50 ms
 
+        // TODO: does this need to be adjusted for long exposure requests?
+        static const nsecs_t kRequestSubmitTimeout = 200e6; // 200 ms
+
         // Used to prepare a batch of requests.
         struct NextRequest {
             sp<CaptureRequest>              captureRequest;
@@ -936,6 +957,7 @@
 
         Mutex              mRequestLock;
         Condition          mRequestSignal;
+        Condition          mRequestSubmittedSignal;
         RequestList        mRequestQueue;
         RequestList        mRepeatingRequests;
         // The next batch of requests being prepped for submission to the HAL, no longer
@@ -1364,6 +1386,9 @@
     // Fix up result metadata for monochrome camera.
     bool mNeedFixupMonochromeTags;
     status_t fixupMonochromeTags(const CameraMetadata& deviceInfo, CameraMetadata& resultMetadata);
+
+    // Whether HAL supports offline processing capability.
+    bool mSupportOfflineProcessing = false;
 }; // class Camera3Device
 
 }; // namespace android
diff --git a/services/camera/libcameraservice/device3/Camera3OfflineSession.cpp b/services/camera/libcameraservice/device3/Camera3OfflineSession.cpp
new file mode 100644
index 0000000..dc5cbb3
--- /dev/null
+++ b/services/camera/libcameraservice/device3/Camera3OfflineSession.cpp
@@ -0,0 +1,118 @@
+/*
+ * 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 "Camera3-OffLnSsn"
+#define ATRACE_TAG ATRACE_TAG_CAMERA
+//#define LOG_NDEBUG 0
+//#define LOG_NNDEBUG 0  // Per-frame verbose logging
+
+#ifdef LOG_NNDEBUG
+#define ALOGVV(...) ALOGV(__VA_ARGS__)
+#else
+#define ALOGVV(...) ((void)0)
+#endif
+
+#include <inttypes.h>
+
+#include <utils/Trace.h>
+
+#include "device3/Camera3OfflineSession.h"
+#include "device3/Camera3OutputStream.h"
+#include "device3/Camera3InputStream.h"
+#include "device3/Camera3SharedOutputStream.h"
+
+using namespace android::camera3;
+using namespace android::hardware::camera;
+
+namespace android {
+
+Camera3OfflineSession::Camera3OfflineSession(const String8 &id):
+        mId(id)
+{
+    ATRACE_CALL();
+    ALOGV("%s: Created offline session for camera %s", __FUNCTION__, mId.string());
+}
+
+Camera3OfflineSession::~Camera3OfflineSession()
+{
+    ATRACE_CALL();
+    ALOGV("%s: Tearing down offline session for camera id %s", __FUNCTION__, mId.string());
+}
+
+const String8& Camera3OfflineSession::getId() const {
+    return mId;
+}
+
+status_t Camera3OfflineSession::initialize(
+        sp<hardware::camera::device::V3_6::ICameraOfflineSession> /*hidlSession*/) {
+    ATRACE_CALL();
+    return OK;
+}
+
+status_t Camera3OfflineSession::dump(int /*fd*/) {
+    ATRACE_CALL();
+    return OK;
+}
+
+status_t Camera3OfflineSession::abort() {
+    ATRACE_CALL();
+    return OK;
+}
+
+status_t Camera3OfflineSession::disconnect() {
+    ATRACE_CALL();
+    return OK;
+}
+
+status_t Camera3OfflineSession::waitForNextFrame(nsecs_t /*timeout*/) {
+    ATRACE_CALL();
+    return OK;
+}
+
+status_t Camera3OfflineSession::getNextResult(CaptureResult* /*frame*/) {
+    ATRACE_CALL();
+    return OK;
+}
+
+hardware::Return<void> Camera3OfflineSession::processCaptureResult_3_4(
+        const hardware::hidl_vec<
+                hardware::camera::device::V3_4::CaptureResult>& /*results*/) {
+    return hardware::Void();
+}
+
+hardware::Return<void> Camera3OfflineSession::processCaptureResult(
+        const hardware::hidl_vec<
+                hardware::camera::device::V3_2::CaptureResult>& /*results*/) {
+    return hardware::Void();
+}
+
+hardware::Return<void> Camera3OfflineSession::notify(
+        const hardware::hidl_vec<hardware::camera::device::V3_2::NotifyMsg>& /*msgs*/) {
+    return hardware::Void();
+}
+
+hardware::Return<void> Camera3OfflineSession::requestStreamBuffers(
+        const hardware::hidl_vec<hardware::camera::device::V3_5::BufferRequest>& /*bufReqs*/,
+        requestStreamBuffers_cb /*_hidl_cb*/) {
+    return hardware::Void();
+}
+
+hardware::Return<void> Camera3OfflineSession::returnStreamBuffers(
+        const hardware::hidl_vec<hardware::camera::device::V3_2::StreamBuffer>& /*buffers*/) {
+    return hardware::Void();
+}
+
+}; // namespace android
diff --git a/services/camera/libcameraservice/device3/Camera3OfflineSession.h b/services/camera/libcameraservice/device3/Camera3OfflineSession.h
new file mode 100644
index 0000000..30e8c4f
--- /dev/null
+++ b/services/camera/libcameraservice/device3/Camera3OfflineSession.h
@@ -0,0 +1,126 @@
+/*
+ * 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_SERVERS_CAMERA3OFFLINESESSION_H
+#define ANDROID_SERVERS_CAMERA3OFFLINESESSION_H
+
+#include <utils/String8.h>
+#include <utils/String16.h>
+
+#include <android/hardware/camera/device/3.6/ICameraOfflineSession.h>
+#include <fmq/MessageQueue.h>
+
+#include "common/CameraOfflineSessionBase.h"
+
+#include "device3/Camera3BufferManager.h"
+#include "device3/DistortionMapper.h"
+#include "utils/TagMonitor.h"
+#include "utils/LatencyHistogram.h"
+#include <camera_metadata_hidden.h>
+
+namespace android {
+
+namespace camera3 {
+
+class Camera3Stream;
+class Camera3OutputStreamInterface;
+class Camera3StreamInterface;
+
+} // namespace camera3
+
+/**
+ * Camera3OfflineSession for offline session defined in HIDL ICameraOfflineSession@3.6 or higher
+ */
+class Camera3OfflineSession :
+            public CameraOfflineSessionBase,
+            virtual public hardware::camera::device::V3_5::ICameraDeviceCallback {
+
+  public:
+
+    // initialize by Camera3Device. Camera3Device must send all info in separate argument.
+    // monitored tags
+    // mUseHalBufManager
+    // mUsePartialResult
+    // mNumPartialResults
+    explicit Camera3OfflineSession(const String8& id);
+
+    virtual ~Camera3OfflineSession();
+
+    status_t initialize(
+        sp<hardware::camera::device::V3_6::ICameraOfflineSession> hidlSession);
+
+    /**
+     * CameraOfflineSessionBase interface
+     */
+    const String8& getId() const override;
+
+    status_t disconnect() override;
+
+    status_t dump(int fd) override;
+
+    status_t abort() override;
+
+    // methods for capture result passing
+    status_t waitForNextFrame(nsecs_t timeout) override;
+    status_t getNextResult(CaptureResult *frame) override;
+
+    // TODO: methods for notification (error/idle/finished etc) passing
+
+    /**
+     * End of CameraOfflineSessionBase interface
+     */
+
+    /**
+     * HIDL ICameraDeviceCallback interface
+     */
+
+    /**
+     * Implementation of android::hardware::camera::device::V3_5::ICameraDeviceCallback
+     */
+
+    hardware::Return<void> processCaptureResult_3_4(
+            const hardware::hidl_vec<
+                    hardware::camera::device::V3_4::CaptureResult>& results) override;
+    hardware::Return<void> processCaptureResult(
+            const hardware::hidl_vec<
+                    hardware::camera::device::V3_2::CaptureResult>& results) override;
+    hardware::Return<void> notify(
+            const hardware::hidl_vec<
+                    hardware::camera::device::V3_2::NotifyMsg>& msgs) override;
+
+    hardware::Return<void> requestStreamBuffers(
+            const hardware::hidl_vec<
+                    hardware::camera::device::V3_5::BufferRequest>& bufReqs,
+            requestStreamBuffers_cb _hidl_cb) override;
+
+    hardware::Return<void> returnStreamBuffers(
+            const hardware::hidl_vec<
+                    hardware::camera::device::V3_2::StreamBuffer>& buffers) override;
+
+    /**
+     * End of CameraOfflineSessionBase interface
+     */
+
+  private:
+
+    // Camera device ID
+    const String8 mId;
+
+}; // class Camera3OfflineSession
+
+}; // namespace android
+
+#endif
diff --git a/services/mediaextractor/MediaExtractorService.cpp b/services/mediaextractor/MediaExtractorService.cpp
index 9e814d1..a6cd224 100644
--- a/services/mediaextractor/MediaExtractorService.cpp
+++ b/services/mediaextractor/MediaExtractorService.cpp
@@ -61,13 +61,11 @@
 }
 
 ::android::binder::Status MediaExtractorService::makeIDataSource(
-        const base::unique_fd &fd,
+        base::unique_fd fd,
         int64_t offset,
         int64_t length,
         ::android::sp<::android::IDataSource>* _aidl_return) {
-    // the caller will close the fd owned by the unique_fd upon return of this function,
-    // so we need to dup() it to retain it.
-    sp<DataSource> source = DataSourceFactory::getInstance()->CreateFromFd(dup(fd.get()), offset, length);
+    sp<DataSource> source = DataSourceFactory::getInstance()->CreateFromFd(fd.release(), offset, length);
     *_aidl_return = CreateIDataSourceFromDataSource(source);
     return binder::Status::ok();
 }
diff --git a/services/mediaextractor/MediaExtractorService.h b/services/mediaextractor/MediaExtractorService.h
index 1b61c4b..1b40bf9 100644
--- a/services/mediaextractor/MediaExtractorService.h
+++ b/services/mediaextractor/MediaExtractorService.h
@@ -37,7 +37,7 @@
             ::android::sp<::android::IMediaExtractor>* _aidl_return);
 
     virtual ::android::binder::Status makeIDataSource(
-            const base::unique_fd &fd,
+            base::unique_fd fd,
             int64_t offset,
             int64_t length,
             ::android::sp<::android::IDataSource>* _aidl_return);
diff --git a/services/soundtrigger/Android.bp b/services/soundtrigger/Android.bp
deleted file mode 100644
index 600f4a3..0000000
--- a/services/soundtrigger/Android.bp
+++ /dev/null
@@ -1,54 +0,0 @@
-// Copyright 2014 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: "libsoundtriggerservice",
-
-    srcs: [
-        "SoundTriggerHwService.cpp",
-        "SoundTriggerHalHidl.cpp",
-    ],
-
-    shared_libs: [
-        "liblog",
-        "libutils",
-        "libbinder",
-        "libcutils",
-        "libhardware",
-        "libsoundtrigger",
-        "libaudioclient",
-        "libaudioutils",
-        "libmediautils",
-
-        "libhidlbase",
-        "libhidlmemory",
-        "libbase",
-        "libaudiohal",
-        "libaudiohal_deathhandler",
-        "android.hardware.soundtrigger@2.0",
-        "android.hardware.soundtrigger@2.1",
-        "android.hardware.soundtrigger@2.2",
-        "android.hardware.soundtrigger@2.3",
-        "android.hardware.audio.common@2.0",
-        "android.hidl.allocator@1.0",
-        "android.hidl.memory@1.0",
-    ],
-
-    include_dirs: ["frameworks/av/services/audioflinger"],
-
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
-}
diff --git a/services/soundtrigger/OWNERS b/services/soundtrigger/OWNERS
deleted file mode 100644
index e83f6b9..0000000
--- a/services/soundtrigger/OWNERS
+++ /dev/null
@@ -1,2 +0,0 @@
-elaurent@google.com
-thorntonc@google.com
diff --git a/services/soundtrigger/SoundTriggerHalHidl.cpp b/services/soundtrigger/SoundTriggerHalHidl.cpp
deleted file mode 100644
index b1d34df..0000000
--- a/services/soundtrigger/SoundTriggerHalHidl.cpp
+++ /dev/null
@@ -1,999 +0,0 @@
-/*
- * 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.
- */
-
-#define LOG_TAG "SoundTriggerHalHidl"
-//#define LOG_NDEBUG 0
-
-#include <android/hidl/allocator/1.0/IAllocator.h>
-#include <media/audiohal/hidl/HalDeathHandler.h>
-#include <utils/Log.h>
-#include "SoundTriggerHalHidl.h"
-#include <hidlmemory/mapping.h>
-#include <hwbinder/IPCThreadState.h>
-#include <hwbinder/ProcessState.h>
-
-namespace android {
-
-using ::android::hardware::ProcessState;
-using ::android::hardware::Return;
-using ::android::hardware::Status;
-using ::android::hardware::Void;
-using ::android::hardware::audio::common::V2_0::AudioDevice;
-using ::android::hardware::hidl_memory;
-using ::android::hidl::allocator::V1_0::IAllocator;
-using ::android::hidl::memory::V1_0::IMemory;
-
-namespace {
-
-// Backs up by the vector with the contents of shared memory.
-// It is assumed that the passed hidl_vector is empty, so it's
-// not cleared if the memory is a null object.
-// The caller needs to keep the returned sp<IMemory> as long as
-// the data is needed.
-std::pair<bool, sp<IMemory>> memoryAsVector(const hidl_memory& m, hidl_vec<uint8_t>* vec) {
-    sp<IMemory> memory;
-    if (m.size() == 0) {
-        return std::make_pair(true, memory);
-    }
-    memory = mapMemory(m);
-    if (memory != nullptr) {
-        memory->read();
-        vec->setToExternal(static_cast<uint8_t*>(static_cast<void*>(memory->getPointer())),
-                memory->getSize());
-        return std::make_pair(true, memory);
-    }
-    ALOGE("%s: Could not map HIDL memory to IMemory", __func__);
-    return std::make_pair(false, memory);
-}
-
-// Moves the data from the vector into allocated shared memory,
-// emptying the vector.
-// It is assumed that the passed hidl_memory is a null object, so it's
-// not reset if the vector is empty.
-// The caller needs to keep the returned sp<IMemory> as long as
-// the data is needed.
-std::pair<bool, sp<IMemory>> moveVectorToMemory(hidl_vec<uint8_t>* v, hidl_memory* mem) {
-    sp<IMemory> memory;
-    if (v->size() == 0) {
-        return std::make_pair(true, memory);
-    }
-    sp<IAllocator> ashmem = IAllocator::getService("ashmem");
-    if (ashmem == 0) {
-        ALOGE("Failed to retrieve ashmem allocator service");
-        return std::make_pair(false, memory);
-    }
-    bool success = false;
-    Return<void> r = ashmem->allocate(v->size(), [&](bool s, const hidl_memory& m) {
-        success = s;
-        if (success) *mem = m;
-    });
-    if (r.isOk() && success) {
-        memory = hardware::mapMemory(*mem);
-        if (memory != 0) {
-            memory->update();
-            memcpy(memory->getPointer(), v->data(), v->size());
-            memory->commit();
-            v->resize(0);
-            return std::make_pair(true, memory);
-        } else {
-            ALOGE("Failed to map allocated ashmem");
-        }
-    } else {
-        ALOGE("Failed to allocate %llu bytes from ashmem", (unsigned long long)v->size());
-    }
-    return std::make_pair(false, memory);
-}
-
-}  // namespace
-
-/* static */
-sp<SoundTriggerHalInterface> SoundTriggerHalInterface::connectModule(const char *moduleName)
-{
-    return new SoundTriggerHalHidl(moduleName);
-}
-
-int SoundTriggerHalHidl::getProperties(struct sound_trigger_properties *properties)
-{
-    sp<ISoundTriggerHw> soundtrigger = getService();
-    if (soundtrigger == 0) {
-        return -ENODEV;
-    }
-
-    ISoundTriggerHw::Properties halProperties;
-    Return<void> hidlReturn;
-    int ret;
-    {
-        AutoMutex lock(mHalLock);
-        hidlReturn = soundtrigger->getProperties([&](int rc, auto res) {
-            ret = rc;
-            halProperties = res;
-            ALOGI("getProperties res implementor %s", res.implementor.c_str());
-        });
-    }
-
-    if (hidlReturn.isOk()) {
-        if (ret == 0) {
-            convertPropertiesFromHal(properties, &halProperties);
-        }
-    } else {
-        ALOGE("getProperties error %s", hidlReturn.description().c_str());
-        return FAILED_TRANSACTION;
-    }
-    ALOGI("getProperties ret %d", ret);
-    return ret;
-}
-
-int SoundTriggerHalHidl::loadSoundModel(struct sound_trigger_sound_model *sound_model,
-                        sound_model_callback_t callback,
-                        void *cookie,
-                        sound_model_handle_t *handle)
-{
-    if (handle == NULL) {
-        return -EINVAL;
-    }
-
-    sp<ISoundTriggerHw> soundtrigger = getService();
-    if (soundtrigger == 0) {
-        return -ENODEV;
-    }
-
-    uint32_t modelId;
-    {
-        AutoMutex lock(mLock);
-        do {
-            modelId = nextUniqueId();
-            ALOGI("loadSoundModel modelId %u", modelId);
-            sp<SoundModel> model = mSoundModels.valueFor(modelId);
-            ALOGI("loadSoundModel model %p", model.get());
-        } while (mSoundModels.valueFor(modelId) != 0 && modelId != 0);
-    }
-    LOG_ALWAYS_FATAL_IF(modelId == 0,
-                        "loadSoundModel(): wrap around in sound model IDs, num loaded models %zd",
-                        mSoundModels.size());
-
-    Return<void> hidlReturn;
-    int ret;
-    SoundModelHandle halHandle;
-    sp<V2_1_ISoundTriggerHw> soundtrigger_2_1 = toService2_1(soundtrigger);
-    sp<V2_2_ISoundTriggerHw> soundtrigger_2_2 = toService2_2(soundtrigger);
-    if (sound_model->type == SOUND_MODEL_TYPE_KEYPHRASE) {
-        if (soundtrigger_2_2) {
-            V2_2_ISoundTriggerHw::PhraseSoundModel halSoundModel;
-            auto result = convertPhraseSoundModelToHal(&halSoundModel, sound_model);
-            if (result.first) {
-                AutoMutex lock(mHalLock);
-                hidlReturn = soundtrigger_2_2->loadPhraseSoundModel_2_1(
-                        halSoundModel,
-                        this, modelId, [&](int32_t retval, auto res) {
-                            ret = retval;
-                            halHandle = res;
-                        });
-            } else {
-                return NO_MEMORY;
-            }
-        } else if (soundtrigger_2_1) {
-            V2_1_ISoundTriggerHw::PhraseSoundModel halSoundModel;
-            auto result = convertPhraseSoundModelToHal(&halSoundModel, sound_model);
-            if (result.first) {
-                AutoMutex lock(mHalLock);
-                hidlReturn = soundtrigger_2_1->loadPhraseSoundModel_2_1(
-                        halSoundModel,
-                        this, modelId, [&](int32_t retval, auto res) {
-                            ret = retval;
-                            halHandle = res;
-                        });
-            } else {
-                return NO_MEMORY;
-            }
-        } else {
-            ISoundTriggerHw::PhraseSoundModel halSoundModel;
-            convertPhraseSoundModelToHal(&halSoundModel, sound_model);
-            AutoMutex lock(mHalLock);
-            hidlReturn = soundtrigger->loadPhraseSoundModel(
-                    halSoundModel,
-                    this, modelId, [&](int32_t retval, auto res) {
-                        ret = retval;
-                        halHandle = res;
-                    });
-        }
-    } else {
-        if (soundtrigger_2_2) {
-            V2_2_ISoundTriggerHw::SoundModel halSoundModel;
-            auto result = convertSoundModelToHal(&halSoundModel, sound_model);
-            if (result.first) {
-                AutoMutex lock(mHalLock);
-                hidlReturn = soundtrigger_2_2->loadSoundModel_2_1(halSoundModel,
-                        this, modelId, [&](int32_t retval, auto res) {
-                            ret = retval;
-                            halHandle = res;
-                        });
-            } else {
-                return NO_MEMORY;
-            }
-        } else if (soundtrigger_2_1) {
-            V2_1_ISoundTriggerHw::SoundModel halSoundModel;
-            auto result = convertSoundModelToHal(&halSoundModel, sound_model);
-            if (result.first) {
-                AutoMutex lock(mHalLock);
-                hidlReturn = soundtrigger_2_1->loadSoundModel_2_1(halSoundModel,
-                        this, modelId, [&](int32_t retval, auto res) {
-                            ret = retval;
-                            halHandle = res;
-                        });
-            } else {
-                return NO_MEMORY;
-            }
-        } else {
-            ISoundTriggerHw::SoundModel halSoundModel;
-            convertSoundModelToHal(&halSoundModel, sound_model);
-            AutoMutex lock(mHalLock);
-            hidlReturn = soundtrigger->loadSoundModel(halSoundModel,
-                    this, modelId, [&](int32_t retval, auto res) {
-                        ret = retval;
-                        halHandle = res;
-                    });
-        }
-    }
-
-    if (hidlReturn.isOk()) {
-        if (ret == 0) {
-            AutoMutex lock(mLock);
-            *handle = (sound_model_handle_t)modelId;
-            sp<SoundModel> model = new SoundModel(*handle, callback, cookie, halHandle);
-            mSoundModels.add(*handle, model);
-        }
-    } else {
-        ALOGE("loadSoundModel error %s", hidlReturn.description().c_str());
-        return FAILED_TRANSACTION;
-    }
-
-    return ret;
-}
-
-int SoundTriggerHalHidl::unloadSoundModel(sound_model_handle_t handle)
-{
-    sp<ISoundTriggerHw> soundtrigger = getService();
-    if (soundtrigger == 0) {
-        return -ENODEV;
-    }
-
-    sp<SoundModel> model = removeModel(handle);
-    if (model == 0) {
-        ALOGE("unloadSoundModel model not found for handle %u", handle);
-        return -EINVAL;
-    }
-
-    Return<int32_t> hidlReturn(0);
-    {
-        AutoMutex lock(mHalLock);
-        hidlReturn = soundtrigger->unloadSoundModel(model->mHalHandle);
-    }
-
-    if (!hidlReturn.isOk()) {
-        ALOGE("unloadSoundModel error %s", hidlReturn.description().c_str());
-        return FAILED_TRANSACTION;
-    }
-
-    return hidlReturn;
-}
-
-int SoundTriggerHalHidl::startRecognition(sound_model_handle_t handle,
-                         const struct sound_trigger_recognition_config *config,
-                         recognition_callback_t callback,
-                         void *cookie)
-{
-    sp<ISoundTriggerHw> soundtrigger = getService();
-    if (soundtrigger == 0) {
-        return -ENODEV;
-    }
-
-    sp<SoundModel> model = getModel(handle);
-    if (model == 0) {
-        ALOGE("startRecognition model not found for handle %u", handle);
-        return -EINVAL;
-    }
-
-    model->mRecognitionCallback = callback;
-    model->mRecognitionCookie = cookie;
-
-    sp<V2_1_ISoundTriggerHw> soundtrigger_2_1 = toService2_1(soundtrigger);
-    sp<V2_2_ISoundTriggerHw> soundtrigger_2_2 = toService2_2(soundtrigger);
-    Return<int32_t> hidlReturn(0);
-
-    if (soundtrigger_2_2) {
-        V2_2_ISoundTriggerHw::RecognitionConfig halConfig;
-        auto result = convertRecognitionConfigToHal(&halConfig, config);
-        if (result.first) {
-            AutoMutex lock(mHalLock);
-            hidlReturn = soundtrigger_2_2->startRecognition_2_1(
-                    model->mHalHandle, halConfig, this, handle);
-        } else {
-            return NO_MEMORY;
-        }
-    } else if (soundtrigger_2_1) {
-        V2_1_ISoundTriggerHw::RecognitionConfig halConfig;
-        auto result = convertRecognitionConfigToHal(&halConfig, config);
-        if (result.first) {
-            AutoMutex lock(mHalLock);
-            hidlReturn = soundtrigger_2_1->startRecognition_2_1(
-                    model->mHalHandle, halConfig, this, handle);
-        } else {
-            return NO_MEMORY;
-        }
-    } else {
-        ISoundTriggerHw::RecognitionConfig halConfig;
-        convertRecognitionConfigToHal(&halConfig, config);
-        {
-            AutoMutex lock(mHalLock);
-            hidlReturn = soundtrigger->startRecognition(model->mHalHandle, halConfig, this, handle);
-        }
-    }
-
-    if (!hidlReturn.isOk()) {
-        ALOGE("startRecognition error %s", hidlReturn.description().c_str());
-        return FAILED_TRANSACTION;
-    }
-    return hidlReturn;
-}
-
-int SoundTriggerHalHidl::stopRecognition(sound_model_handle_t handle)
-{
-    sp<ISoundTriggerHw> soundtrigger = getService();
-    if (soundtrigger == 0) {
-        return -ENODEV;
-    }
-
-    sp<SoundModel> model = getModel(handle);
-    if (model == 0) {
-        ALOGE("stopRecognition model not found for handle %u", handle);
-        return -EINVAL;
-    }
-
-    Return<int32_t> hidlReturn(0);
-    {
-        AutoMutex lock(mHalLock);
-        hidlReturn = soundtrigger->stopRecognition(model->mHalHandle);
-    }
-
-    if (!hidlReturn.isOk()) {
-        ALOGE("stopRecognition error %s", hidlReturn.description().c_str());
-        return FAILED_TRANSACTION;
-    }
-    return hidlReturn;
-}
-
-int SoundTriggerHalHidl::stopAllRecognitions()
-{
-    sp<ISoundTriggerHw> soundtrigger = getService();
-    if (soundtrigger == 0) {
-        return -ENODEV;
-    }
-
-    Return<int32_t> hidlReturn(0);
-    {
-        AutoMutex lock(mHalLock);
-        hidlReturn = soundtrigger->stopAllRecognitions();
-    }
-
-    if (!hidlReturn.isOk()) {
-        ALOGE("stopAllRecognitions error %s", hidlReturn.description().c_str());
-        return FAILED_TRANSACTION;
-    }
-    return hidlReturn;
-}
-
-int SoundTriggerHalHidl::getModelState(sound_model_handle_t handle)
-{
-    sp<ISoundTriggerHw> soundtrigger = getService();
-    if (soundtrigger == 0) {
-        return -ENODEV;
-    }
-
-    sp<V2_2_ISoundTriggerHw> soundtrigger_2_2 = toService2_2(soundtrigger);
-    if (soundtrigger_2_2 == 0) {
-        ALOGE("getModelState not supported");
-        return -ENODEV;
-    }
-
-    sp<SoundModel> model = getModel(handle);
-    if (model == 0) {
-        ALOGE("getModelState model not found for handle %u", handle);
-        return -EINVAL;
-    }
-
-    int ret = NO_ERROR;
-    Return<int32_t> hidlReturn(0);
-    {
-        AutoMutex lock(mHalLock);
-        hidlReturn = soundtrigger_2_2->getModelState(model->mHalHandle);
-    }
-    if (!hidlReturn.isOk()) {
-        ALOGE("getModelState error %s", hidlReturn.description().c_str());
-        ret = FAILED_TRANSACTION;
-    }
-    return ret;
-}
-
-int SoundTriggerHalHidl::setParameter(sound_model_handle_t handle,
-                                sound_trigger_model_parameter_t model_param, int32_t value)
-{
-    sp<ISoundTriggerHw> soundtrigger = getService();
-    if (!soundtrigger) {
-        return -ENODEV;
-    }
-
-    sp<V2_3_ISoundTriggerHw> soundtrigger_2_3 = toService2_3(soundtrigger);
-    if (!soundtrigger_2_3) {
-        ALOGE("setParameter not supported");
-        return -ENOSYS;
-    }
-
-    sp<SoundModel> model = getModel(handle);
-    if (!model) {
-        ALOGE("setParameter model not found for handle %u", handle);
-        return -EINVAL;
-    }
-
-    V2_3_ModelParameter halParam;
-    convertModelParameterToHal(&halParam, model_param);
-
-    Return<int32_t> hidlReturn(0);
-    {
-        AutoMutex lock(mHalLock);
-        hidlReturn = soundtrigger_2_3->setParameter(model->mHalHandle, halParam, value);
-    }
-    if (!hidlReturn.isOk()) {
-        ALOGE("getModelState error %s", hidlReturn.description().c_str());
-        return FAILED_TRANSACTION;
-    }
-
-    return hidlReturn;
-}
-
-int SoundTriggerHalHidl::getParameter(sound_model_handle_t handle,
-                                sound_trigger_model_parameter_t model_param, int32_t* value)
-{
-    sp<ISoundTriggerHw> soundtrigger = getService();
-    if (!soundtrigger) {
-        return -ENODEV;
-    }
-
-    sp<V2_3_ISoundTriggerHw> soundtrigger_2_3 = toService2_3(soundtrigger);
-    if (!soundtrigger_2_3) {
-        ALOGE("getParameter not supported");
-        return -ENOSYS;
-    }
-
-    if (value == NULL) {
-        ALOGE("getParameter invalid value pointer");
-        return -EINVAL;
-    }
-
-    sp<SoundModel> model = getModel(handle);
-    if (!model) {
-        ALOGE("getParameter model not found for handle %u", handle);
-        return -EINVAL;
-    }
-
-    V2_3_ModelParameter halParam;
-    convertModelParameterToHal(&halParam, model_param);
-
-    Return<void> hidlReturn;
-    int32_t hidlStatus;
-    int32_t hidlValue;
-    {
-        AutoMutex lock(mHalLock);
-        hidlReturn = soundtrigger_2_3->getParameter(model->mHalHandle, halParam,
-            [&](int32_t retStatus, int32_t retValue) {
-                hidlStatus = retStatus;
-                hidlValue = retValue;
-            });
-    }
-    if (!hidlReturn.isOk()) {
-        ALOGE("getModelState error %s", hidlReturn.description().c_str());
-        return FAILED_TRANSACTION;
-    }
-
-    *value = hidlValue;
-    return hidlStatus;
-}
-
-int SoundTriggerHalHidl::queryParameter(sound_model_handle_t handle,
-                    sound_trigger_model_parameter_t model_param,
-                    sound_trigger_model_parameter_range_t* param_range)
-{
-    sp<ISoundTriggerHw> soundtrigger = getService();
-    if (!soundtrigger) {
-        return -ENODEV;
-    }
-
-    sp<V2_3_ISoundTriggerHw> soundtrigger_2_3 = toService2_3(soundtrigger);
-    if (!soundtrigger_2_3) {
-        ALOGE("queryParameter not supported");
-        return -ENOSYS;
-    }
-
-    sp<SoundModel> model = getModel(handle);
-    if (!model) {
-        ALOGE("queryParameter model not found for handle %u", handle);
-        return -EINVAL;
-    }
-
-    V2_3_ModelParameter halParam;
-    convertModelParameterToHal(&halParam, model_param);
-
-    Return<void> hidlReturn;
-    int32_t hidlStatus;
-    V2_3_OptionalModelParameterRange hidlValue;
-    {
-        AutoMutex lock(mHalLock);
-        hidlReturn = soundtrigger_2_3->queryParameter(model->mHalHandle, halParam,
-            [&](int32_t retStatus, V2_3_OptionalModelParameterRange retValue) {
-                hidlStatus = retStatus;
-                hidlValue = retValue;
-            });
-    }
-    if (!hidlReturn.isOk()) {
-        ALOGE("queryParameter error %s", hidlReturn.description().c_str());
-        return FAILED_TRANSACTION;
-    }
-
-    if (hidlStatus != 0) {
-        ALOGE("queryParameter error code: %d", hidlStatus);
-        return hidlStatus;
-    }
-
-    if (hidlValue.getDiscriminator() ==
-            V2_3_OptionalModelParameterRange::hidl_discriminator::noinit) {
-        return -1;
-    }
-
-    param_range->start = hidlValue.range().start;
-    param_range->end = hidlValue.range().end;
-
-    return 0;
-}
-
-SoundTriggerHalHidl::SoundTriggerHalHidl(const char *moduleName)
-    : mModuleName(moduleName), mNextUniqueId(1)
-{
-    LOG_ALWAYS_FATAL_IF(strcmp(mModuleName, "primary") != 0,
-            "Treble soundtrigger only supports primary module");
-}
-
-SoundTriggerHalHidl::~SoundTriggerHalHidl()
-{
-}
-
-sp<ISoundTriggerHw> SoundTriggerHalHidl::getService()
-{
-    AutoMutex lock(mLock);
-    if (mISoundTrigger == 0) {
-        if (mModuleName == NULL) {
-            mModuleName = "primary";
-        }
-        mISoundTrigger = ISoundTriggerHw::getService();
-        if (mISoundTrigger != 0) {
-            mISoundTrigger->linkToDeath(HalDeathHandler::getInstance(), 0 /*cookie*/);
-        }
-    }
-    return mISoundTrigger;
-}
-
-sp<V2_1_ISoundTriggerHw> SoundTriggerHalHidl::toService2_1(const sp<ISoundTriggerHw>& s)
-{
-    auto castResult_2_1 = V2_1_ISoundTriggerHw::castFrom(s);
-    return castResult_2_1.isOk() ? static_cast<sp<V2_1_ISoundTriggerHw>>(castResult_2_1) : nullptr;
-}
-
-sp<V2_2_ISoundTriggerHw> SoundTriggerHalHidl::toService2_2(const sp<ISoundTriggerHw>& s)
-{
-    auto castResult_2_2 = V2_2_ISoundTriggerHw::castFrom(s);
-    return castResult_2_2.isOk() ? static_cast<sp<V2_2_ISoundTriggerHw>>(castResult_2_2) : nullptr;
-}
-
-sp<V2_3_ISoundTriggerHw> SoundTriggerHalHidl::toService2_3(const sp<ISoundTriggerHw>& s)
-{
-    auto castResult_3_0 = V2_3_ISoundTriggerHw::castFrom(s);
-    return castResult_3_0.isOk() ? static_cast<sp<V2_3_ISoundTriggerHw>>(castResult_3_0) : nullptr;
-}
-
-sp<SoundTriggerHalHidl::SoundModel> SoundTriggerHalHidl::getModel(sound_model_handle_t handle)
-{
-    AutoMutex lock(mLock);
-    return mSoundModels.valueFor(handle);
-}
-
-sp<SoundTriggerHalHidl::SoundModel> SoundTriggerHalHidl::removeModel(sound_model_handle_t handle)
-{
-    AutoMutex lock(mLock);
-    sp<SoundModel> model = mSoundModels.valueFor(handle);
-    mSoundModels.removeItem(handle);
-    return model;
-}
-
-uint32_t SoundTriggerHalHidl::nextUniqueId()
-{
-    return (uint32_t) atomic_fetch_add_explicit(&mNextUniqueId,
-                (uint_fast32_t) 1, memory_order_acq_rel);
-}
-
-void SoundTriggerHalHidl::convertUuidToHal(Uuid *halUuid,
-                                           const sound_trigger_uuid_t *uuid)
-{
-    halUuid->timeLow = uuid->timeLow;
-    halUuid->timeMid = uuid->timeMid;
-    halUuid->versionAndTimeHigh = uuid->timeHiAndVersion;
-    halUuid->variantAndClockSeqHigh = uuid->clockSeq;
-    memcpy(halUuid->node.data(), &uuid->node[0], sizeof(uuid->node));
-}
-
-void SoundTriggerHalHidl::convertUuidFromHal(sound_trigger_uuid_t *uuid,
-                                             const Uuid *halUuid)
-{
-    uuid->timeLow = halUuid->timeLow;
-    uuid->timeMid = halUuid->timeMid;
-    uuid->timeHiAndVersion = halUuid->versionAndTimeHigh;
-    uuid->clockSeq = halUuid->variantAndClockSeqHigh;
-    memcpy(&uuid->node[0], halUuid->node.data(), sizeof(uuid->node));
-}
-
-void SoundTriggerHalHidl::convertPropertiesFromHal(
-        struct sound_trigger_properties *properties,
-        const ISoundTriggerHw::Properties *halProperties)
-{
-    strlcpy(properties->implementor,
-            halProperties->implementor.c_str(), SOUND_TRIGGER_MAX_STRING_LEN);
-    strlcpy(properties->description,
-            halProperties->description.c_str(), SOUND_TRIGGER_MAX_STRING_LEN);
-    properties->version = halProperties->version;
-    convertUuidFromHal(&properties->uuid, &halProperties->uuid);
-    properties->max_sound_models = halProperties->maxSoundModels;
-    properties->max_key_phrases = halProperties->maxKeyPhrases;
-    properties->max_users = halProperties->maxUsers;
-    properties->recognition_modes = halProperties->recognitionModes;
-    properties->capture_transition = (bool)halProperties->captureTransition;
-    properties->max_buffer_ms = halProperties->maxBufferMs;
-    properties->concurrent_capture = (bool)halProperties->concurrentCapture;
-    properties->trigger_in_event = (bool)halProperties->triggerInEvent;
-    properties->power_consumption_mw = halProperties->powerConsumptionMw;
-}
-
-// static
-void SoundTriggerHalHidl::convertModelParameterToHal(V2_3_ModelParameter* halParam,
-    sound_trigger_model_parameter_t param)
-{
-    switch (param) {
-        case MODEL_PARAMETER_THRESHOLD_FACTOR:
-            *halParam = V2_3_ModelParameter::THRESHOLD_FACTOR;
-            return;
-        case MODEL_PARAMETER_INVALID:
-        default:
-            *halParam = V2_3_ModelParameter::INVALID;
-    }
-}
-
-void SoundTriggerHalHidl::convertTriggerPhraseToHal(
-        ISoundTriggerHw::Phrase *halTriggerPhrase,
-        const struct sound_trigger_phrase *triggerPhrase)
-{
-    halTriggerPhrase->id = triggerPhrase->id;
-    halTriggerPhrase->recognitionModes = triggerPhrase->recognition_mode;
-    halTriggerPhrase->users.setToExternal((uint32_t *)&triggerPhrase->users[0], triggerPhrase->num_users);
-    halTriggerPhrase->locale = triggerPhrase->locale;
-    halTriggerPhrase->text = triggerPhrase->text;
-}
-
-
-void SoundTriggerHalHidl::convertTriggerPhrasesToHal(
-        hidl_vec<ISoundTriggerHw::Phrase> *halTriggerPhrases,
-        struct sound_trigger_phrase_sound_model *keyPhraseModel)
-{
-    halTriggerPhrases->resize(keyPhraseModel->num_phrases);
-    for (unsigned int i = 0; i < keyPhraseModel->num_phrases; i++) {
-        convertTriggerPhraseToHal(&(*halTriggerPhrases)[i], &keyPhraseModel->phrases[i]);
-    }
-}
-
-void SoundTriggerHalHidl::convertSoundModelToHal(ISoundTriggerHw::SoundModel *halModel,
-        const struct sound_trigger_sound_model *soundModel)
-{
-    halModel->type = (SoundModelType)soundModel->type;
-    convertUuidToHal(&halModel->uuid, &soundModel->uuid);
-    convertUuidToHal(&halModel->vendorUuid, &soundModel->vendor_uuid);
-    halModel->data.setToExternal((uint8_t *)soundModel + soundModel->data_offset, soundModel->data_size);
-}
-
-std::pair<bool, sp<IMemory>> SoundTriggerHalHidl::convertSoundModelToHal(
-        V2_1_ISoundTriggerHw::SoundModel *halModel,
-        const struct sound_trigger_sound_model *soundModel)
-{
-    convertSoundModelToHal(&halModel->header, soundModel);
-    return moveVectorToMemory(&halModel->header.data, &halModel->data);
-}
-
-void SoundTriggerHalHidl::convertPhraseSoundModelToHal(
-        ISoundTriggerHw::PhraseSoundModel *halKeyPhraseModel,
-        const struct sound_trigger_sound_model *soundModel)
-{
-    struct sound_trigger_phrase_sound_model *keyPhraseModel =
-            (struct sound_trigger_phrase_sound_model *)soundModel;
-    convertTriggerPhrasesToHal(&halKeyPhraseModel->phrases, keyPhraseModel);
-    convertSoundModelToHal(&halKeyPhraseModel->common, soundModel);
-}
-
-std::pair<bool, sp<IMemory>> SoundTriggerHalHidl::convertPhraseSoundModelToHal(
-        V2_1_ISoundTriggerHw::PhraseSoundModel *halKeyPhraseModel,
-        const struct sound_trigger_sound_model *soundModel)
-{
-    struct sound_trigger_phrase_sound_model *keyPhraseModel =
-            (struct sound_trigger_phrase_sound_model *)soundModel;
-    convertTriggerPhrasesToHal(&halKeyPhraseModel->phrases, keyPhraseModel);
-    return convertSoundModelToHal(&halKeyPhraseModel->common, soundModel);
-}
-
-void SoundTriggerHalHidl::convertPhraseRecognitionExtraToHal(
-        PhraseRecognitionExtra *halExtra,
-        const struct sound_trigger_phrase_recognition_extra *extra)
-{
-    halExtra->id = extra->id;
-    halExtra->recognitionModes = extra->recognition_modes;
-    halExtra->confidenceLevel = extra->confidence_level;
-    halExtra->levels.resize(extra->num_levels);
-    for (unsigned int i = 0; i < extra->num_levels; i++) {
-        halExtra->levels[i].userId = extra->levels[i].user_id;
-        halExtra->levels[i].levelPercent = extra->levels[i].level;
-    }
-}
-
-void SoundTriggerHalHidl::convertRecognitionConfigToHal(
-        ISoundTriggerHw::RecognitionConfig *halConfig,
-        const struct sound_trigger_recognition_config *config)
-{
-    halConfig->captureHandle = config->capture_handle;
-    halConfig->captureDevice = (AudioDevice)config->capture_device;
-    halConfig->captureRequested = (uint32_t)config->capture_requested;
-
-    halConfig->phrases.resize(config->num_phrases);
-    for (unsigned int i = 0; i < config->num_phrases; i++) {
-        convertPhraseRecognitionExtraToHal(&halConfig->phrases[i],
-                                  &config->phrases[i]);
-    }
-
-    halConfig->data.setToExternal((uint8_t *)config + config->data_offset, config->data_size);
-}
-
-std::pair<bool, sp<IMemory>> SoundTriggerHalHidl::convertRecognitionConfigToHal(
-        V2_1_ISoundTriggerHw::RecognitionConfig *halConfig,
-        const struct sound_trigger_recognition_config *config)
-{
-    convertRecognitionConfigToHal(&halConfig->header, config);
-    return moveVectorToMemory(&halConfig->header.data, &halConfig->data);
-}
-
-
-// ISoundTriggerHwCallback
-::android::hardware::Return<void> SoundTriggerHalHidl::recognitionCallback(
-        const V2_0_ISoundTriggerHwCallback::RecognitionEvent& halEvent,
-        CallbackCookie cookie)
-{
-    sp<SoundModel> model;
-    {
-        AutoMutex lock(mLock);
-        model = mSoundModels.valueFor((SoundModelHandle)cookie);
-        if (model == 0) {
-            return Return<void>();
-        }
-    }
-    struct sound_trigger_recognition_event *event = convertRecognitionEventFromHal(&halEvent);
-    if (event == NULL) {
-        return Return<void>();
-    }
-    event->model = model->mHandle;
-    model->mRecognitionCallback(event, model->mRecognitionCookie);
-
-    free(event);
-
-    return Return<void>();
-}
-
-::android::hardware::Return<void> SoundTriggerHalHidl::phraseRecognitionCallback(
-        const V2_0_ISoundTriggerHwCallback::PhraseRecognitionEvent& halEvent,
-        CallbackCookie cookie)
-{
-    sp<SoundModel> model;
-    {
-        AutoMutex lock(mLock);
-        model = mSoundModels.valueFor((SoundModelHandle)cookie);
-        if (model == 0) {
-            return Return<void>();
-        }
-    }
-
-    struct sound_trigger_phrase_recognition_event *event =
-            convertPhraseRecognitionEventFromHal(&halEvent);
-    if (event == NULL) {
-        return Return<void>();
-    }
-    event->common.model = model->mHandle;
-    model->mRecognitionCallback(&event->common, model->mRecognitionCookie);
-
-    free(event);
-
-    return Return<void>();
-}
-
-::android::hardware::Return<void> SoundTriggerHalHidl::soundModelCallback(
-        const V2_0_ISoundTriggerHwCallback::ModelEvent& halEvent,
-        CallbackCookie cookie)
-{
-    sp<SoundModel> model;
-    {
-        AutoMutex lock(mLock);
-        model = mSoundModels.valueFor((SoundModelHandle)cookie);
-        if (model == 0) {
-            return Return<void>();
-        }
-    }
-
-    struct sound_trigger_model_event *event = convertSoundModelEventFromHal(&halEvent);
-    if (event == NULL) {
-        return Return<void>();
-    }
-
-    event->model = model->mHandle;
-    model->mSoundModelCallback(event, model->mSoundModelCookie);
-
-    free(event);
-
-    return Return<void>();
-}
-
-::android::hardware::Return<void> SoundTriggerHalHidl::recognitionCallback_2_1(
-        const ISoundTriggerHwCallback::RecognitionEvent& event, CallbackCookie cookie) {
-    // The data vector in the 'header' part of V2.1 structure is empty, thus copying is cheap.
-    V2_0_ISoundTriggerHwCallback::RecognitionEvent event_2_0 = event.header;
-    auto result = memoryAsVector(event.data, &event_2_0.data);
-    return result.first ? recognitionCallback(event_2_0, cookie) : Void();
-}
-
-::android::hardware::Return<void> SoundTriggerHalHidl::phraseRecognitionCallback_2_1(
-        const ISoundTriggerHwCallback::PhraseRecognitionEvent& event, int32_t cookie) {
-    V2_0_ISoundTriggerHwCallback::PhraseRecognitionEvent event_2_0;
-    // The data vector in the 'header' part of V2.1 structure is empty, thus copying is cheap.
-    event_2_0.common = event.common.header;
-    event_2_0.phraseExtras.setToExternal(
-            const_cast<PhraseRecognitionExtra*>(event.phraseExtras.data()),
-            event.phraseExtras.size());
-    auto result = memoryAsVector(event.common.data, &event_2_0.common.data);
-    return result.first ? phraseRecognitionCallback(event_2_0, cookie) : Void();
-}
-
-::android::hardware::Return<void> SoundTriggerHalHidl::soundModelCallback_2_1(
-        const ISoundTriggerHwCallback::ModelEvent& event, CallbackCookie cookie) {
-    // The data vector in the 'header' part of V2.1 structure is empty, thus copying is cheap.
-    V2_0_ISoundTriggerHwCallback::ModelEvent event_2_0 = event.header;
-    auto result = memoryAsVector(event.data, &event_2_0.data);
-    return result.first ? soundModelCallback(event_2_0, cookie) : Void();
-}
-
-
-struct sound_trigger_model_event *SoundTriggerHalHidl::convertSoundModelEventFromHal(
-                                              const V2_0_ISoundTriggerHwCallback::ModelEvent *halEvent)
-{
-    struct sound_trigger_model_event *event = (struct sound_trigger_model_event *)malloc(
-            sizeof(struct sound_trigger_model_event) +
-            halEvent->data.size());
-    if (event == NULL) {
-        return NULL;
-    }
-
-    event->status = (int)halEvent->status;
-    // event->model to be set by caller
-    event->data_offset = sizeof(struct sound_trigger_model_event);
-    event->data_size = halEvent->data.size();
-    uint8_t *dst = (uint8_t *)event + event->data_offset;
-    uint8_t *src = (uint8_t *)&halEvent->data[0];
-    memcpy(dst, src, halEvent->data.size());
-
-    return event;
-}
-
-void SoundTriggerHalHidl::convertPhraseRecognitionExtraFromHal(
-        struct sound_trigger_phrase_recognition_extra *extra,
-        const PhraseRecognitionExtra *halExtra)
-{
-    extra->id = halExtra->id;
-    extra->recognition_modes = halExtra->recognitionModes;
-    extra->confidence_level = halExtra->confidenceLevel;
-
-    size_t i;
-    for (i = 0; i < halExtra->levels.size() && i < SOUND_TRIGGER_MAX_USERS; i++) {
-        extra->levels[i].user_id = halExtra->levels[i].userId;
-        extra->levels[i].level = halExtra->levels[i].levelPercent;
-    }
-    extra->num_levels = (unsigned int)i;
-}
-
-
-struct sound_trigger_phrase_recognition_event* SoundTriggerHalHidl::convertPhraseRecognitionEventFromHal(
-        const V2_0_ISoundTriggerHwCallback::PhraseRecognitionEvent *halPhraseEvent)
-{
-    if (halPhraseEvent->common.type != SoundModelType::KEYPHRASE) {
-        ALOGE("Received non-keyphrase event type as PhraseRecognitionEvent");
-        return NULL;
-    }
-    struct sound_trigger_phrase_recognition_event *phraseEvent =
-            (struct sound_trigger_phrase_recognition_event *)malloc(
-                    sizeof(struct sound_trigger_phrase_recognition_event) +
-                    halPhraseEvent->common.data.size());
-    if (phraseEvent == NULL) {
-        return NULL;
-    }
-    phraseEvent->common.data_offset = sizeof(sound_trigger_phrase_recognition_event);
-
-    for (unsigned int i = 0; i < halPhraseEvent->phraseExtras.size(); i++) {
-        convertPhraseRecognitionExtraFromHal(&phraseEvent->phrase_extras[i],
-                                             &halPhraseEvent->phraseExtras[i]);
-    }
-    phraseEvent->num_phrases = halPhraseEvent->phraseExtras.size();
-
-    fillRecognitionEventFromHal(&phraseEvent->common, &halPhraseEvent->common);
-    return phraseEvent;
-}
-
-struct sound_trigger_recognition_event *SoundTriggerHalHidl::convertRecognitionEventFromHal(
-        const V2_0_ISoundTriggerHwCallback::RecognitionEvent *halEvent)
-{
-    if (halEvent->type == SoundModelType::KEYPHRASE) {
-        ALOGE("Received keyphrase event type as RecognitionEvent");
-        return NULL;
-    }
-    struct sound_trigger_recognition_event *event;
-    event = (struct sound_trigger_recognition_event *)malloc(
-            sizeof(struct sound_trigger_recognition_event) + halEvent->data.size());
-    if (event == NULL) {
-        return NULL;
-    }
-    event->data_offset = sizeof(sound_trigger_recognition_event);
-
-    fillRecognitionEventFromHal(event, halEvent);
-    return event;
-}
-
-void SoundTriggerHalHidl::fillRecognitionEventFromHal(
-        struct sound_trigger_recognition_event *event,
-        const V2_0_ISoundTriggerHwCallback::RecognitionEvent *halEvent)
-{
-    event->status = (int)halEvent->status;
-    event->type = (sound_trigger_sound_model_type_t)halEvent->type;
-    // event->model to be set by caller
-    event->capture_available = (bool)halEvent->captureAvailable;
-    event->capture_session = halEvent->captureSession;
-    event->capture_delay_ms = halEvent->captureDelayMs;
-    event->capture_preamble_ms = halEvent->capturePreambleMs;
-    event->trigger_in_data = (bool)halEvent->triggerInData;
-    event->audio_config.sample_rate = halEvent->audioConfig.sampleRateHz;
-    event->audio_config.channel_mask = (audio_channel_mask_t)halEvent->audioConfig.channelMask;
-    event->audio_config.format = (audio_format_t)halEvent->audioConfig.format;
-
-    event->data_size = halEvent->data.size();
-    uint8_t *dst = (uint8_t *)event + event->data_offset;
-    uint8_t *src = (uint8_t *)&halEvent->data[0];
-    memcpy(dst, src, halEvent->data.size());
-}
-
-} // namespace android
diff --git a/services/soundtrigger/SoundTriggerHalHidl.h b/services/soundtrigger/SoundTriggerHalHidl.h
deleted file mode 100644
index 25878d0..0000000
--- a/services/soundtrigger/SoundTriggerHalHidl.h
+++ /dev/null
@@ -1,253 +0,0 @@
-/*
- * 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_SOUNDTRIGGER_HAL_HIDL_H
-#define ANDROID_HARDWARE_SOUNDTRIGGER_HAL_HIDL_H
-
-#include <utility>
-
-#include <stdatomic.h>
-#include <utils/RefBase.h>
-#include <utils/KeyedVector.h>
-#include <utils/Vector.h>
-#include <utils/threads.h>
-#include "SoundTriggerHalInterface.h"
-#include <android/hardware/soundtrigger/2.0/types.h>
-#include <android/hardware/soundtrigger/2.3/types.h>
-#include <android/hardware/soundtrigger/2.1/ISoundTriggerHw.h>
-#include <android/hardware/soundtrigger/2.2/ISoundTriggerHw.h>
-#include <android/hardware/soundtrigger/2.3/ISoundTriggerHw.h>
-#include <android/hardware/soundtrigger/2.0/ISoundTriggerHwCallback.h>
-#include <android/hardware/soundtrigger/2.1/ISoundTriggerHwCallback.h>
-
-namespace android {
-
-using ::android::hardware::audio::common::V2_0::Uuid;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::soundtrigger::V2_0::ConfidenceLevel;
-using ::android::hardware::soundtrigger::V2_0::PhraseRecognitionExtra;
-using ::android::hardware::soundtrigger::V2_0::SoundModelType;
-using ::android::hardware::soundtrigger::V2_0::SoundModelHandle;
-using ::android::hardware::soundtrigger::V2_0::ISoundTriggerHw;
-using V2_0_ISoundTriggerHwCallback =
-        ::android::hardware::soundtrigger::V2_0::ISoundTriggerHwCallback;
-using V2_1_ISoundTriggerHw =
-        ::android::hardware::soundtrigger::V2_1::ISoundTriggerHw;
-using V2_1_ISoundTriggerHwCallback =
-        ::android::hardware::soundtrigger::V2_1::ISoundTriggerHwCallback;
-using ::android::hidl::memory::V1_0::IMemory;
-using V2_2_ISoundTriggerHw =
-        ::android::hardware::soundtrigger::V2_2::ISoundTriggerHw;
-using V2_3_ISoundTriggerHw =
-        ::android::hardware::soundtrigger::V2_3::ISoundTriggerHw;
-using V2_3_ModelParameter =
-        ::android::hardware::soundtrigger::V2_3::ModelParameter;
-using V2_3_OptionalModelParameterRange =
-        ::android::hardware::soundtrigger::V2_3::OptionalModelParameterRange;
-
-class SoundTriggerHalHidl : public SoundTriggerHalInterface,
-                            public virtual V2_1_ISoundTriggerHwCallback
-
-{
-public:
-        virtual int getProperties(struct sound_trigger_properties *properties);
-
-        /*
-         * Load a sound model. Once loaded, recognition of this model can be started and stopped.
-         * Only one active recognition per model at a time. The SoundTrigger service will handle
-         * concurrent recognition requests by different users/applications on the same model.
-         * The implementation returns a unique handle used by other functions (unload_sound_model(),
-         * start_recognition(), etc...
-         */
-        virtual int loadSoundModel(struct sound_trigger_sound_model *sound_model,
-                                sound_model_callback_t callback,
-                                void *cookie,
-                                sound_model_handle_t *handle);
-
-        /*
-         * Unload a sound model. A sound model can be unloaded to make room for a new one to overcome
-         * implementation limitations.
-         */
-        virtual int unloadSoundModel(sound_model_handle_t handle);
-
-        /* Start recognition on a given model. Only one recognition active at a time per model.
-         * Once recognition succeeds of fails, the callback is called.
-         * TODO: group recognition configuration parameters into one struct and add key phrase options.
-         */
-        virtual int startRecognition(sound_model_handle_t handle,
-                                 const struct sound_trigger_recognition_config *config,
-                                 recognition_callback_t callback,
-                                 void *cookie);
-
-        /* Stop recognition on a given model.
-         * The implementation does not have to call the callback when stopped via this method.
-         */
-        virtual int stopRecognition(sound_model_handle_t handle);
-
-        /* Stop recognition on all models.
-         * Only supported for device api versions SOUND_TRIGGER_DEVICE_API_VERSION_1_1 or above.
-         * If no implementation is provided, stop_recognition will be called for each running model.
-         */
-        virtual int stopAllRecognitions();
-
-        /* Get the current state of a given model.
-         * Returns 0 or an error code. If successful the state will be returned asynchronously
-         * via a recognition event in the callback method that was registered in the
-         * startRecognition() method.
-         * Only supported for device api versions SOUND_TRIGGER_DEVICE_API_VERSION_1_2 or above.
-         */
-        virtual int getModelState(sound_model_handle_t handle);
-
-        /* Set a model specific ModelParameter with the given value. This parameter
-         * will keep its value for the duration the model is loaded regardless of starting and
-         * stopping recognition. Once the model is unloaded, the value will be lost.
-         * Returns 0 or an error code.
-         * Only supported for device api versions SOUND_TRIGGER_DEVICE_API_VERSION_1_3 or above.
-         */
-        int setParameter(sound_model_handle_t handle,
-                         sound_trigger_model_parameter_t model_param, int32_t value);
-
-        /* Get a model specific ModelParameter. This parameter will keep its value
-         * for the duration the model is loaded regardless of starting and stopping recognition.
-         * Once the model is unloaded, the value will be lost. If the value is not set, a default
-         * value is returned. See sound_trigger_model_parameter_t for parameter default values.
-         * Returns 0 or an error code.  On return 0, value pointer will be set.
-         * Only supported for device api versions SOUND_TRIGGER_DEVICE_API_VERSION_1_3 or above.
-         */
-        int getParameter(sound_model_handle_t handle,
-                         sound_trigger_model_parameter_t model_param, int32_t* value);
-
-        /* Get supported parameter attributes with respect to the provided model
-         * handle. Along with determining the valid range, this API is also used
-         * to determine if a given parameter ID is supported at all by the
-         * modelHandle for use with getParameter and setParameter APIs.
-         */
-        int queryParameter(sound_model_handle_t handle,
-                            sound_trigger_model_parameter_t model_param,
-                            sound_trigger_model_parameter_range_t* param_range);
-
-        // ISoundTriggerHwCallback
-        virtual ::android::hardware::Return<void> recognitionCallback(
-                const V2_0_ISoundTriggerHwCallback::RecognitionEvent& event, CallbackCookie cookie);
-        virtual ::android::hardware::Return<void> phraseRecognitionCallback(
-                const V2_0_ISoundTriggerHwCallback::PhraseRecognitionEvent& event, int32_t cookie);
-        virtual ::android::hardware::Return<void> soundModelCallback(
-                const V2_0_ISoundTriggerHwCallback::ModelEvent& event, CallbackCookie cookie);
-        virtual ::android::hardware::Return<void> recognitionCallback_2_1(
-                const RecognitionEvent& event, CallbackCookie cookie);
-        virtual ::android::hardware::Return<void> phraseRecognitionCallback_2_1(
-                const PhraseRecognitionEvent& event, int32_t cookie);
-        virtual ::android::hardware::Return<void> soundModelCallback_2_1(
-                const ModelEvent& event, CallbackCookie cookie);
-private:
-        class SoundModel : public RefBase {
-        public:
-            SoundModel(sound_model_handle_t handle, sound_model_callback_t callback,
-                       void *cookie, android::hardware::soundtrigger::V2_0::SoundModelHandle halHandle)
-                 : mHandle(handle), mHalHandle(halHandle),
-                   mSoundModelCallback(callback), mSoundModelCookie(cookie),
-                   mRecognitionCallback(NULL), mRecognitionCookie(NULL) {}
-            ~SoundModel() {}
-
-            sound_model_handle_t   mHandle;
-            android::hardware::soundtrigger::V2_0::SoundModelHandle mHalHandle;
-            sound_model_callback_t mSoundModelCallback;
-            void *                 mSoundModelCookie;
-            recognition_callback_t mRecognitionCallback;
-            void *                 mRecognitionCookie;
-        };
-
-        friend class SoundTriggerHalInterface;
-
-        explicit SoundTriggerHalHidl(const char *moduleName = NULL);
-        virtual  ~SoundTriggerHalHidl();
-
-        void convertUuidToHal(Uuid *halUuid,
-                              const sound_trigger_uuid_t *uuid);
-        void convertUuidFromHal(sound_trigger_uuid_t *uuid,
-                                const Uuid *halUuid);
-
-        void convertPropertiesFromHal(
-                struct sound_trigger_properties *properties,
-                const ISoundTriggerHw::Properties *halProperties);
-        static void convertModelParameterToHal(V2_3_ModelParameter* halParam,
-                sound_trigger_model_parameter_t param);
-
-        void convertTriggerPhraseToHal(
-                ISoundTriggerHw::Phrase *halTriggerPhrase,
-                const struct sound_trigger_phrase *triggerPhrase);
-        void convertTriggerPhrasesToHal(
-                hidl_vec<ISoundTriggerHw::Phrase> *halTriggerPhrases,
-                struct sound_trigger_phrase_sound_model *keyPhraseModel);
-        void convertSoundModelToHal(ISoundTriggerHw::SoundModel *halModel,
-                const struct sound_trigger_sound_model *soundModel);
-        std::pair<bool, sp<IMemory>> convertSoundModelToHal(
-                V2_1_ISoundTriggerHw::SoundModel *halModel,
-                const struct sound_trigger_sound_model *soundModel)
-                __attribute__((warn_unused_result));
-        void convertPhraseSoundModelToHal(ISoundTriggerHw::PhraseSoundModel *halKeyPhraseModel,
-                const struct sound_trigger_sound_model *soundModel);
-        std::pair<bool, sp<IMemory>> convertPhraseSoundModelToHal(
-                V2_1_ISoundTriggerHw::PhraseSoundModel *halKeyPhraseModel,
-                const struct sound_trigger_sound_model *soundModel)
-                __attribute__((warn_unused_result));
-
-        void convertPhraseRecognitionExtraToHal(
-                PhraseRecognitionExtra *halExtra,
-                const struct sound_trigger_phrase_recognition_extra *extra);
-        void convertRecognitionConfigToHal(ISoundTriggerHw::RecognitionConfig *halConfig,
-                const struct sound_trigger_recognition_config *config);
-        std::pair<bool, sp<IMemory>> convertRecognitionConfigToHal(
-                V2_1_ISoundTriggerHw::RecognitionConfig *halConfig,
-                const struct sound_trigger_recognition_config *config)
-                __attribute__((warn_unused_result));
-
-        struct sound_trigger_model_event *convertSoundModelEventFromHal(
-                                              const V2_0_ISoundTriggerHwCallback::ModelEvent *halEvent);
-        void convertPhraseRecognitionExtraFromHal(
-                struct sound_trigger_phrase_recognition_extra *extra,
-                const PhraseRecognitionExtra *halExtra);
-        struct sound_trigger_phrase_recognition_event* convertPhraseRecognitionEventFromHal(
-                const V2_0_ISoundTriggerHwCallback::PhraseRecognitionEvent *halPhraseEvent);
-        struct sound_trigger_recognition_event *convertRecognitionEventFromHal(
-                const V2_0_ISoundTriggerHwCallback::RecognitionEvent *halEvent);
-        void fillRecognitionEventFromHal(
-                struct sound_trigger_recognition_event *event,
-                const V2_0_ISoundTriggerHwCallback::RecognitionEvent *halEvent);
-
-        uint32_t nextUniqueId();
-        sp<ISoundTriggerHw> getService();
-        sp<V2_1_ISoundTriggerHw> toService2_1(const sp<ISoundTriggerHw>& s);
-        sp<V2_2_ISoundTriggerHw> toService2_2(const sp<ISoundTriggerHw>& s);
-        sp<V2_3_ISoundTriggerHw> toService2_3(const sp<ISoundTriggerHw>& s);
-        sp<SoundModel> getModel(sound_model_handle_t handle);
-        sp<SoundModel> removeModel(sound_model_handle_t handle);
-
-        static pthread_once_t sOnceControl;
-        static void sOnceInit();
-
-        Mutex mLock;
-        Mutex mHalLock;
-        const char *mModuleName;
-        volatile atomic_uint_fast32_t  mNextUniqueId;
-        // Effect chains without a valid thread
-        DefaultKeyedVector< sound_model_handle_t , sp<SoundModel> > mSoundModels;
-        sp<::android::hardware::soundtrigger::V2_0::ISoundTriggerHw> mISoundTrigger;
-};
-
-} // namespace android
-
-#endif // ANDROID_HARDWARE_SOUNDTRIGGER_HAL_HIDL_H
diff --git a/services/soundtrigger/SoundTriggerHalInterface.h b/services/soundtrigger/SoundTriggerHalInterface.h
deleted file mode 100644
index e1fffff..0000000
--- a/services/soundtrigger/SoundTriggerHalInterface.h
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * 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_SOUNDTRIGGER_HAL_INTERFACE_H
-#define ANDROID_HARDWARE_SOUNDTRIGGER_HAL_INTERFACE_H
-
-#include <utils/RefBase.h>
-#include <system/sound_trigger.h>
-#include <hardware/sound_trigger.h>
-
-namespace android {
-
-class SoundTriggerHalInterface : public virtual RefBase
-{
-public:
-        /* get a sound trigger HAL instance */
-        static sp<SoundTriggerHalInterface> connectModule(const char *moduleName);
-
-        virtual     ~SoundTriggerHalInterface() {}
-
-        virtual int getProperties(struct sound_trigger_properties *properties) = 0;
-
-        /*
-         * Load a sound model. Once loaded, recognition of this model can be started and stopped.
-         * Only one active recognition per model at a time. The SoundTrigger service will handle
-         * concurrent recognition requests by different users/applications on the same model.
-         * The implementation returns a unique handle used by other functions (unload_sound_model(),
-         * start_recognition(), etc...
-         */
-        virtual int loadSoundModel(struct sound_trigger_sound_model *sound_model,
-                                sound_model_callback_t callback,
-                                void *cookie,
-                                sound_model_handle_t *handle) = 0;
-
-        /*
-         * Unload a sound model. A sound model can be unloaded to make room for a new one to overcome
-         * implementation limitations.
-         */
-        virtual int unloadSoundModel(sound_model_handle_t handle) = 0;
-
-        /* Start recognition on a given model. Only one recognition active at a time per model.
-         * Once recognition succeeds of fails, the callback is called.
-         * TODO: group recognition configuration parameters into one struct and add key phrase options.
-         */
-        virtual int startRecognition(sound_model_handle_t handle,
-                                 const struct sound_trigger_recognition_config *config,
-                                 recognition_callback_t callback,
-                                 void *cookie) = 0;
-
-        /* Stop recognition on a given model.
-         * The implementation does not have to call the callback when stopped via this method.
-         */
-        virtual int stopRecognition(sound_model_handle_t handle) = 0;
-
-        /* Stop recognition on all models.
-         * Only supported for device api versions SOUND_TRIGGER_DEVICE_API_VERSION_1_1 or above.
-         * If no implementation is provided, stop_recognition will be called for each running model.
-         */
-        virtual int stopAllRecognitions() = 0;
-
-        /* Get the current state of a given model.
-         * Returns 0 or an error code. If successful the state will be returned asynchronously
-         * via a recognition event in the callback method that was registered in the
-         * startRecognition() method.
-         * Only supported for device api versions SOUND_TRIGGER_DEVICE_API_VERSION_1_2 or above.
-         */
-        virtual int getModelState(sound_model_handle_t handle) = 0;
-
-        /* Set a model specific ModelParameter with the given value. This parameter
-         * will keep its value for the duration the model is loaded regardless of starting and stopping
-         * recognition. Once the model is unloaded, the value will be lost.
-         * Returns 0 or an error code.
-         * Only supported for device api versions SOUND_TRIGGER_DEVICE_API_VERSION_1_3 or above.
-         */
-        virtual int setParameter(sound_model_handle_t handle,
-                                 sound_trigger_model_parameter_t model_param, int32_t value) = 0;
-
-        /* Get a model specific ModelParameter. This parameter will keep its value
-         * for the duration the model is loaded regardless of starting and stopping recognition.
-         * Once the model is unloaded, the value will be lost. If the value is not set, a default
-         * value is returned. See sound_trigger_model_parameter_t for parameter default values.
-         * Returns 0 or an error code. On return 0, value pointer will be set.
-         * Only supported for device api versions SOUND_TRIGGER_DEVICE_API_VERSION_1_3 or above.
-         */
-        virtual int getParameter(sound_model_handle_t sound_model_handle,
-                                 sound_trigger_model_parameter_t model_param, int32_t* value) = 0;
-
-        /* Get supported parameter attributes with respect to the provided model
-         * handle. Along with determining the valid range, this API is also used
-         * to determine if a given parameter ID is supported at all by the
-         * modelHandle for use with getParameter and setParameter APIs.
-         */
-        virtual int queryParameter(sound_model_handle_t sound_model_handle,
-                                 sound_trigger_model_parameter_t model_param,
-                                 sound_trigger_model_parameter_range_t* param_range) = 0;
-
-protected:
-        SoundTriggerHalInterface() {}
-};
-
-} // namespace android
-
-#endif // ANDROID_HARDWARE_SOUNDTRIGGER_HAL_INTERFACE_H
diff --git a/services/soundtrigger/SoundTriggerHwService.cpp b/services/soundtrigger/SoundTriggerHwService.cpp
deleted file mode 100644
index 4d8b0da..0000000
--- a/services/soundtrigger/SoundTriggerHwService.cpp
+++ /dev/null
@@ -1,1249 +0,0 @@
-/*
- * Copyright (C) 2014 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 "SoundTriggerHwService"
-//#define LOG_NDEBUG 0
-
-#include <stdio.h>
-#include <string.h>
-#include <sys/types.h>
-#include <pthread.h>
-
-#include <audio_utils/clock.h>
-#include <system/sound_trigger.h>
-#include <cutils/atomic.h>
-#include <cutils/properties.h>
-#include <hardware/hardware.h>
-#include <media/AudioSystem.h>
-#include <mediautils/ServiceUtilities.h>
-#include <utils/Errors.h>
-#include <utils/Log.h>
-#include <binder/IServiceManager.h>
-#include <binder/MemoryBase.h>
-#include <binder/MemoryHeapBase.h>
-#include <system/sound_trigger.h>
-#include "SoundTriggerHwService.h"
-
-#define HW_MODULE_PREFIX "primary"
-namespace android {
-
-namespace {
-
-// Given an IMemory, returns a copy of its content along with its size.
-// Returns nullptr on failure or if input is nullptr.
-std::pair<std::unique_ptr<uint8_t[]>,
-          size_t> CopyToArray(const sp<IMemory>& mem) {
-    if (mem == nullptr) {
-        return std::make_pair(nullptr, 0);
-    }
-
-    const size_t size = mem->size();
-    if (size == 0) {
-        return std::make_pair(nullptr, 0);
-    }
-
-    std::unique_ptr<uint8_t[]> ar = std::make_unique<uint8_t[]>(size);
-    if (ar == nullptr) {
-        return std::make_pair(nullptr, 0);
-    }
-
-    memcpy(ar.get(), mem->unsecurePointer(), size);
-    return std::make_pair(std::move(ar), size);
-}
-
-}
-
-SoundTriggerHwService::SoundTriggerHwService()
-    : BnSoundTriggerHwService(),
-      mNextUniqueId(1),
-      mMemoryDealer(new MemoryDealer(1024 * 1024, "SoundTriggerHwService")),
-      mCaptureState(false)
-{
-}
-
-void SoundTriggerHwService::onFirstRef()
-{
-    int rc;
-
-    sp<SoundTriggerHalInterface> halInterface =
-            SoundTriggerHalInterface::connectModule(HW_MODULE_PREFIX);
-
-    if (halInterface == 0) {
-        ALOGW("could not connect to HAL");
-        return;
-    }
-    sound_trigger_module_descriptor descriptor;
-    rc = halInterface->getProperties(&descriptor.properties);
-    if (rc != 0) {
-        ALOGE("could not read implementation properties");
-        return;
-    }
-    descriptor.handle =
-            (sound_trigger_module_handle_t)android_atomic_inc(&mNextUniqueId);
-    ALOGI("loaded default module %s, handle %d", descriptor.properties.description,
-                                                 descriptor.handle);
-
-    sp<Module> module = new Module(this, halInterface, descriptor);
-    mModules.add(descriptor.handle, module);
-    mCallbackThread = new CallbackThread(this);
-}
-
-SoundTriggerHwService::~SoundTriggerHwService()
-{
-    if (mCallbackThread != 0) {
-        mCallbackThread->exit();
-    }
-}
-
-status_t SoundTriggerHwService::listModules(const String16& opPackageName,
-                             struct sound_trigger_module_descriptor *modules,
-                             uint32_t *numModules)
-{
-    ALOGV("listModules");
-    if (!captureHotwordAllowed(opPackageName,
-                               IPCThreadState::self()->getCallingPid(),
-                               IPCThreadState::self()->getCallingUid())) {
-        return PERMISSION_DENIED;
-    }
-
-    AutoMutex lock(mServiceLock);
-    if (numModules == NULL || (*numModules != 0 && modules == NULL)) {
-        return BAD_VALUE;
-    }
-    size_t maxModules = *numModules;
-    *numModules = mModules.size();
-    for (size_t i = 0; i < mModules.size() && i < maxModules; i++) {
-        modules[i] = mModules.valueAt(i)->descriptor();
-    }
-    return NO_ERROR;
-}
-
-status_t SoundTriggerHwService::attach(const String16& opPackageName,
-                        const sound_trigger_module_handle_t handle,
-                        const sp<ISoundTriggerClient>& client,
-                        sp<ISoundTrigger>& moduleInterface)
-{
-    ALOGV("attach module %d", handle);
-    if (!captureHotwordAllowed(opPackageName,
-                               IPCThreadState::self()->getCallingPid(),
-                               IPCThreadState::self()->getCallingUid())) {
-        return PERMISSION_DENIED;
-    }
-
-    AutoMutex lock(mServiceLock);
-    moduleInterface.clear();
-    if (client == 0) {
-        return BAD_VALUE;
-    }
-    ssize_t index = mModules.indexOfKey(handle);
-    if (index < 0) {
-        return BAD_VALUE;
-    }
-    sp<Module> module = mModules.valueAt(index);
-
-    sp<ModuleClient> moduleClient = module->addClient(client, opPackageName);
-    if (moduleClient == 0) {
-        return NO_INIT;
-    }
-
-    moduleClient->setCaptureState_l(mCaptureState);
-    moduleInterface = moduleClient;
-
-    return NO_ERROR;
-}
-
-status_t SoundTriggerHwService::setCaptureState(bool active)
-{
-    ALOGV("setCaptureState %d", active);
-    AutoMutex lock(mServiceLock);
-    mCaptureState = active;
-    for (size_t i = 0; i < mModules.size(); i++) {
-        mModules.valueAt(i)->setCaptureState_l(active);
-    }
-    return NO_ERROR;
-}
-
-
-static const int kDumpLockTimeoutNs = 1 * NANOS_PER_SECOND;
-
-static bool dumpTryLock(Mutex& mutex)
-{
-    status_t err = mutex.timedLock(kDumpLockTimeoutNs);
-    return err == NO_ERROR;
-}
-
-status_t SoundTriggerHwService::dump(int fd, const Vector<String16>& args __unused) {
-    String8 result;
-    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
-        result.appendFormat("Permission Denial: can't dump SoundTriggerHwService");
-        write(fd, result.string(), result.size());
-    } else {
-        bool locked = dumpTryLock(mServiceLock);
-        // failed to lock - SoundTriggerHwService is probably deadlocked
-        if (!locked) {
-            result.append("SoundTriggerHwService may be deadlocked\n");
-            write(fd, result.string(), result.size());
-        }
-
-        if (locked) mServiceLock.unlock();
-    }
-    return NO_ERROR;
-}
-
-status_t SoundTriggerHwService::onTransact(
-    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) {
-    return BnSoundTriggerHwService::onTransact(code, data, reply, flags);
-}
-
-
-// static
-void SoundTriggerHwService::recognitionCallback(struct sound_trigger_recognition_event *event,
-                                                void *cookie)
-{
-    Module *module = (Module *)cookie;
-    if (module == NULL) {
-        return;
-    }
-    sp<SoundTriggerHwService> service = module->service().promote();
-    if (service == 0) {
-        return;
-    }
-
-    service->sendRecognitionEvent(event, module);
-}
-
-sp<IMemory> SoundTriggerHwService::prepareRecognitionEvent(
-                                                    struct sound_trigger_recognition_event *event)
-{
-    AutoMutex lock(mMemoryDealerLock);
-    sp<IMemory> eventMemory;
-
-    //sanitize event
-    switch (event->type) {
-    case SOUND_MODEL_TYPE_KEYPHRASE:
-        ALOGW_IF(event->data_size != 0 && event->data_offset !=
-                    sizeof(struct sound_trigger_phrase_recognition_event),
-                    "prepareRecognitionEvent(): invalid data offset %u for keyphrase event type",
-                    event->data_offset);
-        event->data_offset = sizeof(struct sound_trigger_phrase_recognition_event);
-        break;
-    case SOUND_MODEL_TYPE_GENERIC:
-        ALOGW_IF(event->data_size != 0 && event->data_offset !=
-                    sizeof(struct sound_trigger_generic_recognition_event),
-                    "prepareRecognitionEvent(): invalid data offset %u for generic event type",
-                    event->data_offset);
-        event->data_offset = sizeof(struct sound_trigger_generic_recognition_event);
-        break;
-    case SOUND_MODEL_TYPE_UNKNOWN:
-        ALOGW_IF(event->data_size != 0 && event->data_offset !=
-                    sizeof(struct sound_trigger_recognition_event),
-                    "prepareRecognitionEvent(): invalid data offset %u for unknown event type",
-                    event->data_offset);
-        event->data_offset = sizeof(struct sound_trigger_recognition_event);
-        break;
-    default:
-        return eventMemory;
-    }
-
-    size_t size = event->data_offset + event->data_size;
-    eventMemory = mMemoryDealer->allocate(size);
-    if (eventMemory == 0 || eventMemory->unsecurePointer() == NULL) {
-        eventMemory.clear();
-        return eventMemory;
-    }
-    memcpy(eventMemory->unsecurePointer(), event, size);
-
-    return eventMemory;
-}
-
-void SoundTriggerHwService::sendRecognitionEvent(struct sound_trigger_recognition_event *event,
-                                                 Module *module)
-{
-    if (module == NULL) {
-        return;
-    }
-    sp<IMemory> eventMemory = prepareRecognitionEvent(event);
-    if (eventMemory == 0) {
-        return;
-    }
-
-    sp<CallbackEvent> callbackEvent = new CallbackEvent(CallbackEvent::TYPE_RECOGNITION,
-                                                        eventMemory);
-    callbackEvent->setModule(module);
-    sendCallbackEvent(callbackEvent);
-}
-
-// static
-void SoundTriggerHwService::soundModelCallback(struct sound_trigger_model_event *event,
-                                               void *cookie)
-{
-    Module *module = (Module *)cookie;
-    if (module == NULL) {
-        return;
-    }
-    sp<SoundTriggerHwService> service = module->service().promote();
-    if (service == 0) {
-        return;
-    }
-
-    service->sendSoundModelEvent(event, module);
-}
-
-sp<IMemory> SoundTriggerHwService::prepareSoundModelEvent(struct sound_trigger_model_event *event)
-{
-    AutoMutex lock(mMemoryDealerLock);
-    sp<IMemory> eventMemory;
-
-    size_t size = event->data_offset + event->data_size;
-    eventMemory = mMemoryDealer->allocate(size);
-    if (eventMemory == 0 || eventMemory->unsecurePointer() == NULL) {
-        eventMemory.clear();
-        return eventMemory;
-    }
-    memcpy(eventMemory->unsecurePointer(), event, size);
-
-    return eventMemory;
-}
-
-void SoundTriggerHwService::sendSoundModelEvent(struct sound_trigger_model_event *event,
-                                                Module *module)
-{
-    sp<IMemory> eventMemory = prepareSoundModelEvent(event);
-    if (eventMemory == 0) {
-        return;
-    }
-    sp<CallbackEvent> callbackEvent = new CallbackEvent(CallbackEvent::TYPE_SOUNDMODEL,
-                                                        eventMemory);
-    callbackEvent->setModule(module);
-    sendCallbackEvent(callbackEvent);
-}
-
-
-sp<IMemory> SoundTriggerHwService::prepareServiceStateEvent(sound_trigger_service_state_t state)
-{
-    AutoMutex lock(mMemoryDealerLock);
-    sp<IMemory> eventMemory;
-
-    size_t size = sizeof(sound_trigger_service_state_t);
-    eventMemory = mMemoryDealer->allocate(size);
-    if (eventMemory == 0 || eventMemory->unsecurePointer() == NULL) {
-        eventMemory.clear();
-        return eventMemory;
-    }
-    *((sound_trigger_service_state_t *)eventMemory->unsecurePointer()) = state;
-    return eventMemory;
-}
-
-void SoundTriggerHwService::sendServiceStateEvent(sound_trigger_service_state_t state,
-                                                  Module *module)
-{
-    sp<IMemory> eventMemory = prepareServiceStateEvent(state);
-    if (eventMemory == 0) {
-        return;
-    }
-    sp<CallbackEvent> callbackEvent = new CallbackEvent(CallbackEvent::TYPE_SERVICE_STATE,
-                                                        eventMemory);
-    callbackEvent->setModule(module);
-    sendCallbackEvent(callbackEvent);
-}
-
-void SoundTriggerHwService::sendServiceStateEvent(sound_trigger_service_state_t state,
-                                                  ModuleClient *moduleClient)
-{
-    sp<IMemory> eventMemory = prepareServiceStateEvent(state);
-    if (eventMemory == 0) {
-        return;
-    }
-    sp<CallbackEvent> callbackEvent = new CallbackEvent(CallbackEvent::TYPE_SERVICE_STATE,
-                                                        eventMemory);
-    callbackEvent->setModuleClient(moduleClient);
-    sendCallbackEvent(callbackEvent);
-}
-
-void SoundTriggerHwService::sendCallbackEvent(const sp<CallbackEvent>& event)
-{
-    mCallbackThread->sendCallbackEvent(event);
-}
-
-void SoundTriggerHwService::onCallbackEvent(const sp<CallbackEvent>& event)
-{
-    ALOGV("onCallbackEvent");
-    sp<Module> module;
-    sp<ModuleClient> moduleClient;
-    {
-        AutoMutex lock(mServiceLock);
-        //CallbackEvent is either for Module or ModuleClient
-        module = event->mModule.promote();
-        if (module == 0) {
-            moduleClient = event->mModuleClient.promote();
-            if (moduleClient == 0) {
-                return;
-            }
-        } else {
-            // Sanity check on this being a Module we know about.
-            bool foundModule = false;
-            for (size_t i = 0; i < mModules.size(); i++) {
-                if (mModules.valueAt(i).get() == module.get()) {
-                    foundModule = true;
-                    break;
-                }
-            }
-            if (!foundModule) {
-                ALOGE("onCallbackEvent for unknown module");
-                return;
-            }
-        }
-    }
-    if (module != 0) {
-        ALOGV("onCallbackEvent for module");
-        module->onCallbackEvent(event);
-    } else if (moduleClient != 0) {
-        ALOGV("onCallbackEvent for moduleClient");
-        moduleClient->onCallbackEvent(event);
-    }
-    {
-        AutoMutex lock(mServiceLock);
-        // clear now to execute with mServiceLock locked
-        event->mMemory.clear();
-    }
-}
-
-#undef LOG_TAG
-#define LOG_TAG "SoundTriggerHwService::CallbackThread"
-
-SoundTriggerHwService::CallbackThread::CallbackThread(const wp<SoundTriggerHwService>& service)
-    : mService(service)
-{
-}
-
-SoundTriggerHwService::CallbackThread::~CallbackThread()
-{
-    while (!mEventQueue.isEmpty()) {
-        mEventQueue[0]->mMemory.clear();
-        mEventQueue.removeAt(0);
-    }
-}
-
-void SoundTriggerHwService::CallbackThread::onFirstRef()
-{
-    run("soundTrigger cbk", ANDROID_PRIORITY_URGENT_AUDIO);
-}
-
-bool SoundTriggerHwService::CallbackThread::threadLoop()
-{
-    while (!exitPending()) {
-        sp<CallbackEvent> event;
-        sp<SoundTriggerHwService> service;
-        {
-            Mutex::Autolock _l(mCallbackLock);
-            while (mEventQueue.isEmpty() && !exitPending()) {
-                ALOGV("CallbackThread::threadLoop() sleep");
-                mCallbackCond.wait(mCallbackLock);
-                ALOGV("CallbackThread::threadLoop() wake up");
-            }
-            if (exitPending()) {
-                break;
-            }
-            event = mEventQueue[0];
-            mEventQueue.removeAt(0);
-            service = mService.promote();
-        }
-        if (service != 0) {
-            service->onCallbackEvent(event);
-        }
-    }
-    return false;
-}
-
-void SoundTriggerHwService::CallbackThread::exit()
-{
-    Mutex::Autolock _l(mCallbackLock);
-    requestExit();
-    mCallbackCond.broadcast();
-}
-
-void SoundTriggerHwService::CallbackThread::sendCallbackEvent(
-                        const sp<SoundTriggerHwService::CallbackEvent>& event)
-{
-    AutoMutex lock(mCallbackLock);
-    mEventQueue.add(event);
-    mCallbackCond.signal();
-}
-
-SoundTriggerHwService::CallbackEvent::CallbackEvent(event_type type, sp<IMemory> memory)
-    : mType(type), mMemory(memory)
-{
-}
-
-SoundTriggerHwService::CallbackEvent::~CallbackEvent()
-{
-}
-
-
-#undef LOG_TAG
-#define LOG_TAG "SoundTriggerHwService::Module"
-
-SoundTriggerHwService::Module::Module(const sp<SoundTriggerHwService>& service,
-                                      const sp<SoundTriggerHalInterface>& halInterface,
-                                      sound_trigger_module_descriptor descriptor)
- : mService(service), mHalInterface(halInterface), mDescriptor(descriptor),
-   mServiceState(SOUND_TRIGGER_STATE_NO_INIT)
-{
-}
-
-SoundTriggerHwService::Module::~Module() {
-    mModuleClients.clear();
-}
-
-sp<SoundTriggerHwService::ModuleClient>
-SoundTriggerHwService::Module::addClient(const sp<ISoundTriggerClient>& client,
-                                         const String16& opPackageName)
-{
-    AutoMutex lock(mLock);
-    sp<ModuleClient> moduleClient;
-
-    for (size_t i = 0; i < mModuleClients.size(); i++) {
-        if (mModuleClients[i]->client() == client) {
-            // Client already present, reuse client
-            return moduleClient;
-        }
-    }
-    moduleClient = new ModuleClient(this, client, opPackageName);
-
-    ALOGV("addClient() client %p", moduleClient.get());
-    mModuleClients.add(moduleClient);
-
-    return moduleClient;
-}
-
-void SoundTriggerHwService::Module::detach(const sp<ModuleClient>& moduleClient)
-{
-    ALOGV("Module::detach()");
-    Vector<audio_session_t> releasedSessions;
-
-    {
-        AutoMutex lock(mLock);
-        ssize_t index = -1;
-
-        for (size_t i = 0; i < mModuleClients.size(); i++) {
-            if (mModuleClients[i] == moduleClient) {
-                index = i;
-                break;
-            }
-        }
-        if (index == -1) {
-            return;
-        }
-
-        ALOGV("remove client %p", moduleClient.get());
-        mModuleClients.removeAt(index);
-
-        // Iterate in reverse order as models are removed from list inside the loop.
-        for (size_t i = mModels.size(); i > 0; i--) {
-            sp<Model> model = mModels.valueAt(i - 1);
-            if (moduleClient == model->mModuleClient) {
-                mModels.removeItemsAt(i - 1);
-                ALOGV("detach() unloading model %d", model->mHandle);
-                if (mHalInterface != 0) {
-                    if (model->mState == Model::STATE_ACTIVE) {
-                        mHalInterface->stopRecognition(model->mHandle);
-                    }
-                    mHalInterface->unloadSoundModel(model->mHandle);
-                }
-                releasedSessions.add(model->mCaptureSession);
-            }
-        }
-    }
-
-    for (size_t i = 0; i < releasedSessions.size(); i++) {
-        // do not call AudioSystem methods with mLock held
-        AudioSystem::releaseSoundTriggerSession(releasedSessions[i]);
-    }
-}
-
-status_t SoundTriggerHwService::Module::loadSoundModel(const sp<IMemory>& modelMemory,
-                                                       sp<ModuleClient> moduleClient,
-                                                       sound_model_handle_t *handle)
-{
-    ALOGV("loadSoundModel() handle");
-    if (mHalInterface == 0) {
-        return NO_INIT;
-    }
-
-    auto immutableMemory = CopyToArray(modelMemory);
-    if (immutableMemory.first == nullptr) {
-        return NO_MEMORY;
-    }
-
-    struct sound_trigger_sound_model* sound_model =
-        (struct sound_trigger_sound_model*) immutableMemory.first.get();
-
-    size_t structSize;
-    if (sound_model->type == SOUND_MODEL_TYPE_KEYPHRASE) {
-        structSize = sizeof(struct sound_trigger_phrase_sound_model);
-    } else {
-        structSize = sizeof(struct sound_trigger_sound_model);
-    }
-
-    if (sound_model->data_offset < structSize ||
-        sound_model->data_size > (UINT_MAX - sound_model->data_offset) ||
-        immutableMemory.second < sound_model->data_offset ||
-            sound_model->data_size >
-            (immutableMemory.second - sound_model->data_offset)) {
-        android_errorWriteLog(0x534e4554, "30148546");
-        ALOGE("loadSoundModel() data_size is too big");
-        return BAD_VALUE;
-    }
-
-    audio_session_t session;
-    audio_io_handle_t ioHandle;
-    audio_devices_t device;
-    // do not call AudioSystem methods with mLock held
-    status_t status = AudioSystem::acquireSoundTriggerSession(&session, &ioHandle, &device);
-    if (status != NO_ERROR) {
-        return status;
-    }
-
-    {
-        AutoMutex lock(mLock);
-
-        if (mModels.size() >= mDescriptor.properties.max_sound_models) {
-            ALOGW("loadSoundModel(): Not loading, max number of models (%d) would be exceeded",
-                  mDescriptor.properties.max_sound_models);
-            status = INVALID_OPERATION;
-            goto exit;
-        }
-
-        status = mHalInterface->loadSoundModel(sound_model,
-                                                      SoundTriggerHwService::soundModelCallback,
-                                                      this, handle);
-        if (status != NO_ERROR) {
-            goto exit;
-        }
-
-        sp<Model> model = new Model(*handle, session, ioHandle, device, sound_model->type,
-                                    moduleClient);
-        mModels.replaceValueFor(*handle, model);
-    }
-exit:
-    if (status != NO_ERROR) {
-        // do not call AudioSystem methods with mLock held
-        AudioSystem::releaseSoundTriggerSession(session);
-    }
-    return status;
-}
-
-status_t SoundTriggerHwService::Module::unloadSoundModel(sound_model_handle_t handle)
-{
-    ALOGV("unloadSoundModel() model handle %d", handle);
-    status_t status;
-    audio_session_t session;
-
-    {
-        AutoMutex lock(mLock);
-        if (mHalInterface == 0) {
-            return NO_INIT;
-        }
-        ssize_t index = mModels.indexOfKey(handle);
-        if (index < 0) {
-            return BAD_VALUE;
-        }
-        sp<Model> model = mModels.valueAt(index);
-        mModels.removeItem(handle);
-        if (model->mState == Model::STATE_ACTIVE) {
-            mHalInterface->stopRecognition(model->mHandle);
-            model->mState = Model::STATE_IDLE;
-        }
-        status = mHalInterface->unloadSoundModel(handle);
-        session = model->mCaptureSession;
-    }
-    // do not call AudioSystem methods with mLock held
-    AudioSystem::releaseSoundTriggerSession(session);
-    return status;
-}
-
-status_t SoundTriggerHwService::Module::startRecognition(sound_model_handle_t handle,
-                                 const sp<IMemory>& dataMemory)
-{
-    ALOGV("startRecognition() model handle %d", handle);
-    if (mHalInterface == 0) {
-        return NO_INIT;
-    }
-
-    auto immutableMemory = CopyToArray(dataMemory);
-    if (immutableMemory.first == nullptr) {
-        return NO_MEMORY;
-    }
-
-    struct sound_trigger_recognition_config* config =
-        (struct sound_trigger_recognition_config*) immutableMemory.first.get();
-
-    if (config->data_offset < sizeof(struct sound_trigger_recognition_config) ||
-        config->data_size > (UINT_MAX - config->data_offset) ||
-        immutableMemory.second < config->data_offset ||
-            config->data_size >
-            (immutableMemory.second - config->data_offset)) {
-        ALOGE("startRecognition() data_size is too big");
-        return BAD_VALUE;
-    }
-
-    AutoMutex lock(mLock);
-    if (mServiceState == SOUND_TRIGGER_STATE_DISABLED) {
-        return INVALID_OPERATION;
-    }
-    sp<Model> model = getModel(handle);
-    if (model == 0) {
-        return BAD_VALUE;
-    }
-
-    if (model->mState == Model::STATE_ACTIVE) {
-        return INVALID_OPERATION;
-    }
-
-
-    //TODO: get capture handle and device from audio policy service
-    config->capture_handle = model->mCaptureIOHandle;
-    config->capture_device = model->mCaptureDevice;
-    status_t status = mHalInterface->startRecognition(handle, config,
-                                        SoundTriggerHwService::recognitionCallback,
-                                        this);
-
-    if (status == NO_ERROR) {
-        model->mState = Model::STATE_ACTIVE;
-        model->mConfig = *config;
-    }
-
-    return status;
-}
-
-status_t SoundTriggerHwService::Module::stopRecognition(sound_model_handle_t handle)
-{
-    ALOGV("stopRecognition() model handle %d", handle);
-    if (mHalInterface == 0) {
-        return NO_INIT;
-    }
-    AutoMutex lock(mLock);
-    sp<Model> model = getModel(handle);
-    if (model == 0) {
-        return BAD_VALUE;
-    }
-
-    if (model->mState != Model::STATE_ACTIVE) {
-        return INVALID_OPERATION;
-    }
-    mHalInterface->stopRecognition(handle);
-    model->mState = Model::STATE_IDLE;
-    return NO_ERROR;
-}
-
-status_t SoundTriggerHwService::Module::getModelState(sound_model_handle_t handle)
-{
-    ALOGV("getModelState() model handle %d", handle);
-    if (mHalInterface == 0) {
-        return NO_INIT;
-    }
-    AutoMutex lock(mLock);
-    sp<Model> model = getModel(handle);
-    if (model == 0) {
-        return BAD_VALUE;
-    }
-
-    if (model->mState != Model::STATE_ACTIVE) {
-        return INVALID_OPERATION;
-    }
-
-    return mHalInterface->getModelState(handle);
-}
-
-status_t SoundTriggerHwService::Module::setParameter(sound_model_handle_t handle,
-                                sound_trigger_model_parameter_t param,
-                                int32_t value)
-{
-    ALOGV("setParameter() handle=%d, param=%d, value=%d", handle, param, value);
-    if (mHalInterface == 0) {
-        return NO_INIT;
-    }
-
-    AutoMutex lock(mLock);
-    return mHalInterface->setParameter(handle, param, value);
-}
-
-status_t SoundTriggerHwService::Module::getParameter(sound_model_handle_t handle,
-                                sound_trigger_model_parameter_t param,
-                                int32_t* value)
-{
-    ALOGV("getParameter() handle=%d, param=%d", handle, param);
-    if (mHalInterface == 0) {
-        return NO_INIT;
-    }
-
-    AutoMutex lock(mLock);
-    return mHalInterface->getParameter(handle, param, value);
-}
-
-status_t SoundTriggerHwService::Module::queryParameter(sound_model_handle_t handle,
-                                sound_trigger_model_parameter_t param,
-                                sound_trigger_model_parameter_range_t* param_range)
-{
-    ALOGV("queryParameter() handle=%d, param=%d", handle, param);
-    if (mHalInterface == 0) {
-        return NO_INIT;
-    }
-
-    AutoMutex lock(mLock);
-    return mHalInterface->queryParameter(handle, param, param_range);
-}
-
-void SoundTriggerHwService::Module::onCallbackEvent(const sp<CallbackEvent>& event)
-{
-    ALOGV("onCallbackEvent type %d", event->mType);
-
-    // Memory is coming from a trusted process.
-    sp<IMemory> eventMemory = event->mMemory;
-
-    if (eventMemory == 0 || eventMemory->unsecurePointer() == NULL) {
-        return;
-    }
-    if (mModuleClients.isEmpty()) {
-        ALOGI("%s no clients", __func__);
-        return;
-    }
-
-    Vector< sp<ModuleClient> > clients;
-
-    switch (event->mType) {
-    case CallbackEvent::TYPE_RECOGNITION: {
-        struct sound_trigger_recognition_event *recognitionEvent =
-                (struct sound_trigger_recognition_event *)eventMemory->unsecurePointer();
-        {
-            AutoMutex lock(mLock);
-            sp<Model> model = getModel(recognitionEvent->model);
-            if (model == 0) {
-                ALOGW("%s model == 0", __func__);
-                return;
-            }
-            if (model->mState != Model::STATE_ACTIVE) {
-                ALOGV("onCallbackEvent model->mState %d != Model::STATE_ACTIVE", model->mState);
-                return;
-            }
-
-            recognitionEvent->capture_session = model->mCaptureSession;
-            model->mState = Model::STATE_IDLE;
-            clients.add(model->mModuleClient);
-        }
-    } break;
-    case CallbackEvent::TYPE_SOUNDMODEL: {
-        struct sound_trigger_model_event *soundmodelEvent =
-                (struct sound_trigger_model_event *)eventMemory->unsecurePointer();
-        {
-            AutoMutex lock(mLock);
-            sp<Model> model = getModel(soundmodelEvent->model);
-            if (model == 0) {
-                ALOGW("%s model == 0", __func__);
-                return;
-            }
-            clients.add(model->mModuleClient);
-        }
-    } break;
-    case CallbackEvent::TYPE_SERVICE_STATE: {
-        {
-            AutoMutex lock(mLock);
-            for (size_t i = 0; i < mModuleClients.size(); i++) {
-                if (mModuleClients[i] != 0) {
-                    clients.add(mModuleClients[i]);
-                }
-            }
-        }
-    } break;
-    default:
-        LOG_ALWAYS_FATAL("onCallbackEvent unknown event type %d", event->mType);
-    }
-
-    for (size_t i = 0; i < clients.size(); i++) {
-        clients[i]->onCallbackEvent(event);
-    }
-}
-
-sp<SoundTriggerHwService::Model> SoundTriggerHwService::Module::getModel(
-        sound_model_handle_t handle)
-{
-    sp<Model> model;
-    ssize_t index = mModels.indexOfKey(handle);
-    if (index >= 0) {
-        model = mModels.valueAt(index);
-    }
-    return model;
-}
-
-// Called with mServiceLock held
-void SoundTriggerHwService::Module::setCaptureState_l(bool active)
-{
-    ALOGV("Module::setCaptureState_l %d", active);
-    sp<SoundTriggerHwService> service;
-    sound_trigger_service_state_t state;
-
-    Vector< sp<IMemory> > events;
-    {
-        AutoMutex lock(mLock);
-        state = (active && !mDescriptor.properties.concurrent_capture) ?
-                                        SOUND_TRIGGER_STATE_DISABLED : SOUND_TRIGGER_STATE_ENABLED;
-
-        if (state == mServiceState) {
-            return;
-        }
-
-        mServiceState = state;
-
-        service = mService.promote();
-        if (service == 0) {
-            return;
-        }
-
-        if (state == SOUND_TRIGGER_STATE_ENABLED) {
-            goto exit;
-        }
-
-        const bool supports_stop_all =
-                (mHalInterface != 0) && (mHalInterface->stopAllRecognitions() != -ENOSYS);
-
-        for (size_t i = 0; i < mModels.size(); i++) {
-            sp<Model> model = mModels.valueAt(i);
-            if (model->mState == Model::STATE_ACTIVE) {
-                if (mHalInterface != 0 && !supports_stop_all) {
-                    mHalInterface->stopRecognition(model->mHandle);
-                }
-                // keep model in ACTIVE state so that event is processed by onCallbackEvent()
-                if (model->mType == SOUND_MODEL_TYPE_KEYPHRASE) {
-                    struct sound_trigger_phrase_recognition_event event;
-                    memset(&event, 0, sizeof(struct sound_trigger_phrase_recognition_event));
-                    event.num_phrases = model->mConfig.num_phrases;
-                    for (size_t i = 0; i < event.num_phrases; i++) {
-                        event.phrase_extras[i] = model->mConfig.phrases[i];
-                    }
-                    event.common.status = RECOGNITION_STATUS_ABORT;
-                    event.common.type = model->mType;
-                    event.common.model = model->mHandle;
-                    event.common.data_size = 0;
-                    sp<IMemory> eventMemory = service->prepareRecognitionEvent(&event.common);
-                    if (eventMemory != 0) {
-                        events.add(eventMemory);
-                    }
-                } else if (model->mType == SOUND_MODEL_TYPE_GENERIC) {
-                    struct sound_trigger_generic_recognition_event event;
-                    memset(&event, 0, sizeof(struct sound_trigger_generic_recognition_event));
-                    event.common.status = RECOGNITION_STATUS_ABORT;
-                    event.common.type = model->mType;
-                    event.common.model = model->mHandle;
-                    event.common.data_size = 0;
-                    sp<IMemory> eventMemory = service->prepareRecognitionEvent(&event.common);
-                    if (eventMemory != 0) {
-                        events.add(eventMemory);
-                    }
-                } else if (model->mType == SOUND_MODEL_TYPE_UNKNOWN) {
-                    struct sound_trigger_phrase_recognition_event event;
-                    memset(&event, 0, sizeof(struct sound_trigger_phrase_recognition_event));
-                    event.common.status = RECOGNITION_STATUS_ABORT;
-                    event.common.type = model->mType;
-                    event.common.model = model->mHandle;
-                    event.common.data_size = 0;
-                    sp<IMemory> eventMemory = service->prepareRecognitionEvent(&event.common);
-                    if (eventMemory != 0) {
-                        events.add(eventMemory);
-                    }
-                } else {
-                    goto exit;
-                }
-            }
-        }
-    }
-
-    for (size_t i = 0; i < events.size(); i++) {
-        sp<CallbackEvent> callbackEvent = new CallbackEvent(CallbackEvent::TYPE_RECOGNITION,
-                                                            events[i]);
-        callbackEvent->setModule(this);
-        service->sendCallbackEvent(callbackEvent);
-    }
-
-exit:
-    service->sendServiceStateEvent(state, this);
-}
-
-
-SoundTriggerHwService::Model::Model(sound_model_handle_t handle, audio_session_t session,
-                                    audio_io_handle_t ioHandle, audio_devices_t device,
-                                    sound_trigger_sound_model_type_t type,
-                                    sp<ModuleClient>& moduleClient) :
-    mHandle(handle), mState(STATE_IDLE), mCaptureSession(session),
-    mCaptureIOHandle(ioHandle), mCaptureDevice(device), mType(type),
-    mModuleClient(moduleClient)
-{
-}
-
-#undef LOG_TAG
-#define LOG_TAG "SoundTriggerHwService::ModuleClient"
-
-SoundTriggerHwService::ModuleClient::ModuleClient(const sp<Module>& module,
-                                                  const sp<ISoundTriggerClient>& client,
-                                                  const String16& opPackageName)
- : mModule(module), mClient(client), mOpPackageName(opPackageName)
-{
-}
-
-void SoundTriggerHwService::ModuleClient::onFirstRef()
-{
-    sp<IBinder> binder = IInterface::asBinder(mClient);
-    if (binder != 0) {
-        binder->linkToDeath(this);
-    }
-}
-
-SoundTriggerHwService::ModuleClient::~ModuleClient()
-{
-}
-
-status_t SoundTriggerHwService::ModuleClient::dump(int fd __unused,
-                                                   const Vector<String16>& args __unused) {
-    String8 result;
-    return NO_ERROR;
-}
-
-void SoundTriggerHwService::ModuleClient::detach() {
-    ALOGV("detach()");
-    if (!captureHotwordAllowed(mOpPackageName,
-                               IPCThreadState::self()->getCallingPid(),
-                               IPCThreadState::self()->getCallingUid())) {
-        return;
-    }
-
-    {
-        AutoMutex lock(mLock);
-        if (mClient != 0) {
-            IInterface::asBinder(mClient)->unlinkToDeath(this);
-            mClient.clear();
-        }
-    }
-
-    sp<Module> module = mModule.promote();
-    if (module == 0) {
-        return;
-    }
-    module->detach(this);
-}
-
-status_t SoundTriggerHwService::ModuleClient::loadSoundModel(const sp<IMemory>& modelMemory,
-                                sound_model_handle_t *handle)
-{
-    ALOGV("loadSoundModel() handle");
-    if (!captureHotwordAllowed(mOpPackageName,
-                               IPCThreadState::self()->getCallingPid(),
-                               IPCThreadState::self()->getCallingUid())) {
-        return PERMISSION_DENIED;
-    }
-    if (checkIMemory(modelMemory) != NO_ERROR) {
-        return BAD_VALUE;
-    }
-
-    sp<Module> module = mModule.promote();
-    if (module == 0) {
-        return NO_INIT;
-    }
-    return module->loadSoundModel(modelMemory, this, handle);
-}
-
-status_t SoundTriggerHwService::ModuleClient::unloadSoundModel(sound_model_handle_t handle)
-{
-    ALOGV("unloadSoundModel() model handle %d", handle);
-    if (!captureHotwordAllowed(mOpPackageName,
-                               IPCThreadState::self()->getCallingPid(),
-                               IPCThreadState::self()->getCallingUid())) {
-        return PERMISSION_DENIED;
-    }
-
-    sp<Module> module = mModule.promote();
-    if (module == 0) {
-        return NO_INIT;
-    }
-    return module->unloadSoundModel(handle);
-}
-
-status_t SoundTriggerHwService::ModuleClient::startRecognition(sound_model_handle_t handle,
-                                 const sp<IMemory>& dataMemory)
-{
-    ALOGV("startRecognition() model handle %d", handle);
-    if (!captureHotwordAllowed(mOpPackageName,
-                               IPCThreadState::self()->getCallingPid(),
-                               IPCThreadState::self()->getCallingUid())) {
-        return PERMISSION_DENIED;
-    }
-    if (checkIMemory(dataMemory) != NO_ERROR) {
-        return BAD_VALUE;
-    }
-
-    sp<Module> module = mModule.promote();
-    if (module == 0) {
-        return NO_INIT;
-    }
-    return module->startRecognition(handle, dataMemory);
-}
-
-status_t SoundTriggerHwService::ModuleClient::stopRecognition(sound_model_handle_t handle)
-{
-    ALOGV("stopRecognition() model handle %d", handle);
-    if (!captureHotwordAllowed(mOpPackageName,
-                               IPCThreadState::self()->getCallingPid(),
-                               IPCThreadState::self()->getCallingUid())) {
-        return PERMISSION_DENIED;
-    }
-
-    sp<Module> module = mModule.promote();
-    if (module == 0) {
-        return NO_INIT;
-    }
-    return module->stopRecognition(handle);
-}
-
-status_t SoundTriggerHwService::ModuleClient::getModelState(sound_model_handle_t handle)
-{
-    ALOGV("getModelState() model handle %d", handle);
-    if (!captureHotwordAllowed(mOpPackageName,
-                               IPCThreadState::self()->getCallingPid(),
-                               IPCThreadState::self()->getCallingUid())) {
-        return PERMISSION_DENIED;
-    }
-
-    sp<Module> module = mModule.promote();
-    if (module == 0) {
-        return NO_INIT;
-    }
-    return module->getModelState(handle);
-}
-
-status_t SoundTriggerHwService::ModuleClient::setParameter(sound_model_handle_t handle,
-        sound_trigger_model_parameter_t param, int32_t value)
-{
-    ALOGV("setParameter() handle=%d, param=%d, value=%d", handle, param, value);
-    if (!captureHotwordAllowed(mOpPackageName,
-                               IPCThreadState::self()->getCallingPid(),
-                               IPCThreadState::self()->getCallingUid())) {
-        return PERMISSION_DENIED;
-    }
-
-    sp<Module> module = mModule.promote();
-    if (module == 0) {
-        return NO_INIT;
-    }
-    return module->setParameter(handle, param, value);
-}
-
-status_t SoundTriggerHwService::ModuleClient::getParameter(sound_model_handle_t handle,
-        sound_trigger_model_parameter_t param, int32_t* value)
-{
-    ALOGV("getParameter() handle=%d, param=%d", handle, param);
-    if (!captureHotwordAllowed(mOpPackageName,
-                               IPCThreadState::self()->getCallingPid(),
-                               IPCThreadState::self()->getCallingUid())) {
-        return PERMISSION_DENIED;
-    }
-
-    sp<Module> module = mModule.promote();
-    if (module == 0) {
-        return NO_INIT;
-    }
-    return module->getParameter(handle, param, value);
-}
-
-status_t SoundTriggerHwService::ModuleClient::queryParameter(sound_model_handle_t handle,
-        sound_trigger_model_parameter_t param,
-        sound_trigger_model_parameter_range_t* param_range)
-{
-    ALOGV("isParameterSupported() handle=%d, param=%d", handle, param);
-    if (!captureHotwordAllowed(mOpPackageName,
-                               IPCThreadState::self()->getCallingPid(),
-                               IPCThreadState::self()->getCallingUid())) {
-        return PERMISSION_DENIED;
-    }
-
-    sp<Module> module = mModule.promote();
-    if (module == 0) {
-        return NO_INIT;
-    }
-    return module->queryParameter(handle, param, param_range);
-}
-
-void SoundTriggerHwService::ModuleClient::setCaptureState_l(bool active)
-{
-    ALOGV("ModuleClient::setCaptureState_l %d", active);
-    sp<SoundTriggerHwService> service;
-    sound_trigger_service_state_t state;
-
-    sp<Module> module = mModule.promote();
-    if (module == 0) {
-        return;
-    }
-    {
-        AutoMutex lock(mLock);
-        state = (active && !module->isConcurrentCaptureAllowed()) ?
-                                        SOUND_TRIGGER_STATE_DISABLED : SOUND_TRIGGER_STATE_ENABLED;
-
-        service = module->service().promote();
-        if (service == 0) {
-            return;
-        }
-    }
-    service->sendServiceStateEvent(state, this);
-}
-
-void SoundTriggerHwService::ModuleClient::onCallbackEvent(const sp<CallbackEvent>& event)
-{
-    ALOGV("ModuleClient onCallbackEvent type %d", event->mType);
-
-    sp<IMemory> eventMemory = event->mMemory;
-
-    // Memory is coming from a trusted process.
-    if (eventMemory == 0 || eventMemory->unsecurePointer() == NULL) {
-        return;
-    }
-
-    sp<ISoundTriggerClient> client;
-    {
-        AutoMutex lock(mLock);
-        client = mClient;
-    }
-
-    if (client != 0) {
-        switch (event->mType) {
-        case CallbackEvent::TYPE_RECOGNITION: {
-            client->onRecognitionEvent(eventMemory);
-        } break;
-        case CallbackEvent::TYPE_SOUNDMODEL: {
-            client->onSoundModelEvent(eventMemory);
-        } break;
-        case CallbackEvent::TYPE_SERVICE_STATE: {
-            client->onServiceStateChange(eventMemory);
-        } break;
-        default:
-            LOG_ALWAYS_FATAL("onCallbackEvent unknown event type %d", event->mType);
-        }
-    }
-}
-
-void SoundTriggerHwService::ModuleClient::binderDied(
-    const wp<IBinder> &who __unused) {
-    ALOGW("client binder died for client %p", this);
-    detach();
-}
-
-}; // namespace android
diff --git a/services/soundtrigger/SoundTriggerHwService.h b/services/soundtrigger/SoundTriggerHwService.h
deleted file mode 100644
index 4057e14..0000000
--- a/services/soundtrigger/SoundTriggerHwService.h
+++ /dev/null
@@ -1,272 +0,0 @@
-/*
- * Copyright (C) 2008 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_SOUNDTRIGGER_HAL_SERVICE_H
-#define ANDROID_HARDWARE_SOUNDTRIGGER_HAL_SERVICE_H
-
-#include <utils/Vector.h>
-//#include <binder/AppOpsManager.h>
-#include <binder/MemoryDealer.h>
-#include <binder/BinderService.h>
-#include <binder/IAppOpsCallback.h>
-#include <soundtrigger/ISoundTriggerHwService.h>
-#include <soundtrigger/ISoundTrigger.h>
-#include <soundtrigger/ISoundTriggerClient.h>
-#include <system/sound_trigger.h>
-#include "SoundTriggerHalInterface.h"
-
-namespace android {
-
-class MemoryHeapBase;
-
-class SoundTriggerHwService :
-    public BinderService<SoundTriggerHwService>,
-    public BnSoundTriggerHwService
-{
-    friend class BinderService<SoundTriggerHwService>;
-public:
-    class Module;
-    class ModuleClient;
-
-    static char const* getServiceName() { return "media.sound_trigger_hw"; }
-
-                        SoundTriggerHwService();
-    virtual             ~SoundTriggerHwService();
-
-    // ISoundTriggerHwService
-    virtual status_t listModules(const String16& opPackageName,
-                                 struct sound_trigger_module_descriptor *modules,
-                                 uint32_t *numModules);
-
-    virtual status_t attach(const String16& opPackageName,
-                            const sound_trigger_module_handle_t handle,
-                            const sp<ISoundTriggerClient>& client,
-                            sp<ISoundTrigger>& module);
-
-    virtual status_t setCaptureState(bool active);
-
-    virtual status_t    onTransact(uint32_t code, const Parcel& data,
-                                   Parcel* reply, uint32_t flags);
-
-    virtual status_t    dump(int fd, const Vector<String16>& args);
-
-    class Model : public RefBase {
-     public:
-
-        enum {
-            STATE_IDLE,
-            STATE_ACTIVE
-        };
-
-        Model(sound_model_handle_t handle, audio_session_t session, audio_io_handle_t ioHandle,
-              audio_devices_t device, sound_trigger_sound_model_type_t type,
-              sp<ModuleClient>& moduleClient);
-        ~Model() {}
-
-        sound_model_handle_t    mHandle;
-        int                     mState;
-        audio_session_t         mCaptureSession;
-        audio_io_handle_t       mCaptureIOHandle;
-        audio_devices_t         mCaptureDevice;
-        sound_trigger_sound_model_type_t mType;
-        struct sound_trigger_recognition_config mConfig;
-        sp<ModuleClient>        mModuleClient;
-    };
-
-    class CallbackEvent : public RefBase {
-    public:
-        typedef enum {
-            TYPE_RECOGNITION,
-            TYPE_SOUNDMODEL,
-            TYPE_SERVICE_STATE,
-        } event_type;
-        CallbackEvent(event_type type, sp<IMemory> memory);
-
-        virtual             ~CallbackEvent();
-
-        void setModule(wp<Module> module) { mModule = module; }
-        void setModuleClient(wp<ModuleClient> moduleClient) { mModuleClient = moduleClient; }
-
-        event_type mType;
-        sp<IMemory> mMemory;
-        wp<Module> mModule;
-        wp<ModuleClient> mModuleClient;
-    };
-
-    class Module : public RefBase {
-    public:
-
-       Module(const sp<SoundTriggerHwService>& service,
-              const sp<SoundTriggerHalInterface>& halInterface,
-              sound_trigger_module_descriptor descriptor);
-
-       virtual ~Module();
-
-       virtual status_t loadSoundModel(const sp<IMemory>& modelMemory,
-                                       sp<ModuleClient> moduleClient,
-                                       sound_model_handle_t *handle);
-
-       virtual status_t unloadSoundModel(sound_model_handle_t handle);
-
-       virtual status_t startRecognition(sound_model_handle_t handle,
-                                         const sp<IMemory>& dataMemory);
-       virtual status_t stopRecognition(sound_model_handle_t handle);
-       virtual status_t getModelState(sound_model_handle_t handle);
-       virtual status_t setParameter(sound_model_handle_t handle,
-                                     sound_trigger_model_parameter_t param,
-                                     int32_t value);
-       virtual status_t getParameter(sound_model_handle_t handle,
-                                     sound_trigger_model_parameter_t param,
-                                     int32_t* value);
-       virtual status_t queryParameter(sound_model_handle_t handle,
-                                       sound_trigger_model_parameter_t param,
-                                       sound_trigger_model_parameter_range_t* param_range);
-
-       sp<SoundTriggerHalInterface> halInterface() const { return mHalInterface; }
-       struct sound_trigger_module_descriptor descriptor() { return mDescriptor; }
-       wp<SoundTriggerHwService> service() const { return mService; }
-       bool isConcurrentCaptureAllowed() const { return mDescriptor.properties.concurrent_capture; }
-
-       sp<Model> getModel(sound_model_handle_t handle);
-
-       void setCaptureState_l(bool active);
-
-       sp<ModuleClient> addClient(const sp<ISoundTriggerClient>& client,
-                                  const String16& opPackageName);
-
-       void detach(const sp<ModuleClient>& moduleClient);
-
-       void onCallbackEvent(const sp<CallbackEvent>& event);
-
-    private:
-
-        Mutex                                  mLock;
-        wp<SoundTriggerHwService>              mService;
-        sp<SoundTriggerHalInterface>           mHalInterface;
-        struct sound_trigger_module_descriptor mDescriptor;
-        Vector< sp<ModuleClient> >             mModuleClients;
-        DefaultKeyedVector< sound_model_handle_t, sp<Model> >     mModels;
-        sound_trigger_service_state_t          mServiceState;
-    }; // class Module
-
-    class ModuleClient : public virtual RefBase,
-                         public BnSoundTrigger,
-                         public IBinder::DeathRecipient {
-    public:
-
-       ModuleClient(const sp<Module>& module,
-              const sp<ISoundTriggerClient>& client,
-              const String16& opPackageName);
-
-       virtual ~ModuleClient();
-
-       virtual void detach();
-
-       virtual status_t loadSoundModel(const sp<IMemory>& modelMemory,
-                                       sound_model_handle_t *handle);
-
-       virtual status_t unloadSoundModel(sound_model_handle_t handle);
-
-       virtual status_t startRecognition(sound_model_handle_t handle,
-                                         const sp<IMemory>& dataMemory);
-       virtual status_t stopRecognition(sound_model_handle_t handle);
-       virtual status_t getModelState(sound_model_handle_t handle);
-       virtual status_t setParameter(sound_model_handle_t handle,
-                                     sound_trigger_model_parameter_t param,
-                                     int32_t value);
-       virtual status_t getParameter(sound_model_handle_t handle,
-                                     sound_trigger_model_parameter_t param,
-                                     int32_t* value);
-       virtual status_t queryParameter(sound_model_handle_t handle,
-                                sound_trigger_model_parameter_t param,
-                                sound_trigger_model_parameter_range_t* param_range);
-
-       virtual status_t dump(int fd, const Vector<String16>& args);
-
-       virtual void onFirstRef();
-
-       // IBinder::DeathRecipient implementation
-       virtual void        binderDied(const wp<IBinder> &who);
-
-       void onCallbackEvent(const sp<CallbackEvent>& event);
-
-       void setCaptureState_l(bool active);
-
-       sp<ISoundTriggerClient> client() const { return mClient; }
-
-    private:
-
-        mutable Mutex               mLock;
-        wp<Module>                  mModule;
-        sp<ISoundTriggerClient>     mClient;
-        const String16              mOpPackageName;
-    }; // class ModuleClient
-
-    class CallbackThread : public Thread {
-    public:
-
-        explicit CallbackThread(const wp<SoundTriggerHwService>& service);
-
-        virtual             ~CallbackThread();
-
-        // Thread virtuals
-        virtual bool        threadLoop();
-
-        // RefBase
-        virtual void        onFirstRef();
-
-                void        exit();
-                void        sendCallbackEvent(const sp<CallbackEvent>& event);
-
-    private:
-        wp<SoundTriggerHwService>   mService;
-        Condition                   mCallbackCond;
-        Mutex                       mCallbackLock;
-        Vector< sp<CallbackEvent> > mEventQueue;
-    };
-
-    static void recognitionCallback(struct sound_trigger_recognition_event *event, void *cookie);
-           sp<IMemory> prepareRecognitionEvent(struct sound_trigger_recognition_event *event);
-           void sendRecognitionEvent(struct sound_trigger_recognition_event *event, Module *module);
-
-    static void soundModelCallback(struct sound_trigger_model_event *event, void *cookie);
-           sp<IMemory> prepareSoundModelEvent(struct sound_trigger_model_event *event);
-           void sendSoundModelEvent(struct sound_trigger_model_event *event, Module *module);
-
-           sp<IMemory> prepareServiceStateEvent(sound_trigger_service_state_t state);
-           void sendServiceStateEvent(sound_trigger_service_state_t state, Module *module);
-           void sendServiceStateEvent(sound_trigger_service_state_t state,
-                                      ModuleClient *moduleClient);
-
-           void sendCallbackEvent(const sp<CallbackEvent>& event);
-           void onCallbackEvent(const sp<CallbackEvent>& event);
-
-private:
-
-    virtual void onFirstRef();
-
-    Mutex               mServiceLock;
-    volatile int32_t    mNextUniqueId;
-    DefaultKeyedVector< sound_trigger_module_handle_t, sp<Module> >     mModules;
-    sp<CallbackThread>  mCallbackThread;
-    sp<MemoryDealer>    mMemoryDealer;
-    Mutex               mMemoryDealerLock;
-    bool                mCaptureState;
-};
-
-} // namespace android
-
-#endif // ANDROID_HARDWARE_SOUNDTRIGGER_HAL_SERVICE_H
diff --git a/soundtrigger/Android.bp b/soundtrigger/Android.bp
deleted file mode 100644
index 6178153..0000000
--- a/soundtrigger/Android.bp
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright 2014 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: "libsoundtrigger",
-
-    srcs: [
-        "SoundTrigger.cpp",
-        "ISoundTrigger.cpp",
-        "ISoundTriggerClient.cpp",
-        "ISoundTriggerHwService.cpp",
-    ],
-
-    shared_libs: [
-        "libcutils",
-        "libutils",
-        "liblog",
-        "libbinder",
-    ],
-
-    cflags: [
-        "-Werror",
-        "-Wall",
-    ],
-}
diff --git a/soundtrigger/ISoundTrigger.cpp b/soundtrigger/ISoundTrigger.cpp
deleted file mode 100644
index 9b1da13..0000000
--- a/soundtrigger/ISoundTrigger.cpp
+++ /dev/null
@@ -1,319 +0,0 @@
-/*
-**
-** Copyright 2014, 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 "ISoundTrigger"
-#include <utils/Log.h>
-#include <utils/Errors.h>
-#include <binder/IMemory.h>
-#include <soundtrigger/ISoundTrigger.h>
-#include <soundtrigger/ISoundTriggerHwService.h>
-#include <soundtrigger/ISoundTriggerClient.h>
-#include <system/sound_trigger.h>
-
-namespace android {
-
-enum {
-    DETACH = IBinder::FIRST_CALL_TRANSACTION,
-    LOAD_SOUND_MODEL,
-    UNLOAD_SOUND_MODEL,
-    START_RECOGNITION,
-    STOP_RECOGNITION,
-    GET_MODEL_STATE,
-    SET_PARAMETER,
-    GET_PARAMETER,
-    QUERY_PARAMETER,
-};
-
-class BpSoundTrigger: public BpInterface<ISoundTrigger>
-{
-public:
-    explicit BpSoundTrigger(const sp<IBinder>& impl)
-        : BpInterface<ISoundTrigger>(impl)
-    {
-    }
-
-    void detach()
-    {
-        ALOGV("detach");
-        Parcel data, reply;
-        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
-        remote()->transact(DETACH, data, &reply);
-    }
-
-    status_t loadSoundModel(const sp<IMemory>&  modelMemory,
-                                    sound_model_handle_t *handle)
-    {
-        if (modelMemory == 0 || handle == NULL) {
-            return BAD_VALUE;
-        }
-        Parcel data, reply;
-        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
-        data.writeStrongBinder(IInterface::asBinder(modelMemory));
-        status_t status = remote()->transact(LOAD_SOUND_MODEL, data, &reply);
-        if (status != NO_ERROR) {
-            return status;
-        }
-        status = (status_t)reply.readInt32();
-        if (status == NO_ERROR) {
-            reply.read(handle, sizeof(sound_model_handle_t));
-        }
-        return status;
-    }
-
-    virtual status_t unloadSoundModel(sound_model_handle_t handle)
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
-        data.write(&handle, sizeof(sound_model_handle_t));
-        status_t status = remote()->transact(UNLOAD_SOUND_MODEL, data, &reply);
-        if (status == NO_ERROR) {
-            status = (status_t)reply.readInt32();
-        }
-        return status;
-    }
-
-    virtual status_t startRecognition(sound_model_handle_t handle,
-                                      const sp<IMemory>& dataMemory)
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
-        data.write(&handle, sizeof(sound_model_handle_t));
-        if (dataMemory == 0) {
-            data.writeInt32(0);
-        } else {
-            data.writeInt32(dataMemory->size());
-        }
-        data.writeStrongBinder(IInterface::asBinder(dataMemory));
-        status_t status = remote()->transact(START_RECOGNITION, data, &reply);
-        if (status == NO_ERROR) {
-            status = (status_t)reply.readInt32();
-        }
-        return status;
-    }
-
-    virtual status_t stopRecognition(sound_model_handle_t handle)
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
-        data.write(&handle, sizeof(sound_model_handle_t));
-        status_t status = remote()->transact(STOP_RECOGNITION, data, &reply);
-        if (status == NO_ERROR) {
-            status = (status_t)reply.readInt32();
-        }
-        return status;
-    }
-
-    virtual status_t getModelState(sound_model_handle_t handle)
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
-        data.write(&handle, sizeof(sound_model_handle_t));
-        status_t status = remote()->transact(GET_MODEL_STATE, data, &reply);
-        if (status == NO_ERROR) {
-            status = (status_t)reply.readInt32();
-        }
-        return status;
-    }
-
-    virtual status_t setParameter(sound_model_handle_t handle,
-                                     sound_trigger_model_parameter_t param,
-                                     int32_t value)
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
-        data.write(&handle, sizeof(sound_model_handle_t));
-        data.write(&param, sizeof(sound_trigger_model_parameter_t));
-        data.writeInt32(value);
-        status_t status = remote()->transact(SET_PARAMETER, data, &reply);
-        if (status == NO_ERROR) {
-            status = (status_t)reply.readInt32();
-        }
-        return status;
-    }
-
-    virtual status_t getParameter(sound_model_handle_t handle,
-                                     sound_trigger_model_parameter_t param,
-                                     int32_t* value)
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
-        data.write(&handle, sizeof(sound_model_handle_t));
-        data.write(&param, sizeof(sound_trigger_model_parameter_t));
-        status_t status = remote()->transact(GET_PARAMETER, data, &reply);
-        if (status == NO_ERROR) {
-            status = (status_t)reply.readInt32();
-            *value = reply.readInt32();
-        }
-        return status;
-    }
-
-    virtual status_t queryParameter(sound_model_handle_t handle,
-            sound_trigger_model_parameter_t param,
-            sound_trigger_model_parameter_range_t* param_range)
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
-        data.write(&handle, sizeof(sound_model_handle_t));
-        data.write(&param, sizeof(sound_trigger_model_parameter_t));
-        status_t status = remote()->transact(QUERY_PARAMETER, data, &reply);
-        if (status == NO_ERROR) {
-            status = (status_t)reply.readInt32();
-            param_range->start = reply.readInt32();
-            param_range->end = reply.readInt32();
-        }
-        return status;
-    }
-
-};
-
-IMPLEMENT_META_INTERFACE(SoundTrigger, "android.hardware.ISoundTrigger");
-
-// ----------------------------------------------------------------------
-
-status_t BnSoundTrigger::onTransact(
-    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
-{
-    switch(code) {
-        case DETACH: {
-            ALOGV("DETACH");
-            CHECK_INTERFACE(ISoundTrigger, data, reply);
-            detach();
-            return NO_ERROR;
-        } break;
-        case LOAD_SOUND_MODEL: {
-            CHECK_INTERFACE(ISoundTrigger, data, reply);
-            sp<IMemory> modelMemory = interface_cast<IMemory>(
-                data.readStrongBinder());
-            sound_model_handle_t handle;
-            status_t status = loadSoundModel(modelMemory, &handle);
-            reply->writeInt32(status);
-            if (status == NO_ERROR) {
-                reply->write(&handle, sizeof(sound_model_handle_t));
-            }
-            return NO_ERROR;
-        }
-        case UNLOAD_SOUND_MODEL: {
-            CHECK_INTERFACE(ISoundTrigger, data, reply);
-            sound_model_handle_t handle;
-            data.read(&handle, sizeof(sound_model_handle_t));
-            status_t status = unloadSoundModel(handle);
-            reply->writeInt32(status);
-            return NO_ERROR;
-        }
-        case START_RECOGNITION: {
-            CHECK_INTERFACE(ISoundTrigger, data, reply);
-            sound_model_handle_t handle;
-            data.read(&handle, sizeof(sound_model_handle_t));
-            sp<IMemory> dataMemory;
-            if (data.readInt32() != 0) {
-                dataMemory = interface_cast<IMemory>(data.readStrongBinder());
-            }
-            status_t status = startRecognition(handle, dataMemory);
-            reply->writeInt32(status);
-            return NO_ERROR;
-        }
-        case STOP_RECOGNITION: {
-            CHECK_INTERFACE(ISoundTrigger, data, reply);
-            sound_model_handle_t handle;
-            data.read(&handle, sizeof(sound_model_handle_t));
-            status_t status = stopRecognition(handle);
-            reply->writeInt32(status);
-            return NO_ERROR;
-        }
-        case GET_MODEL_STATE: {
-            CHECK_INTERFACE(ISoundTrigger, data, reply);
-            sound_model_handle_t handle;
-            status_t status = UNKNOWN_ERROR;
-            status_t ret = data.read(&handle, sizeof(sound_model_handle_t));
-            if (ret == NO_ERROR) {
-                status = getModelState(handle);
-            }
-            reply->writeInt32(status);
-            return ret;
-        }
-        case SET_PARAMETER: {
-            CHECK_INTERFACE(ISoundTrigger, data, reply);
-            sound_model_handle_t handle;
-            sound_trigger_model_parameter_t param;
-            int32_t value;
-            status_t status = UNKNOWN_ERROR;
-            status_t ret;
-            ret = data.read(&handle, sizeof(sound_model_handle_t));
-            if (ret != NO_ERROR) {
-                return ret;
-            }
-            ret = data.read(&param, sizeof(sound_trigger_model_parameter_t));
-            if (ret != NO_ERROR) {
-                return ret;
-            }
-            ret = data.read(&value, sizeof(int32_t));
-            if (ret != NO_ERROR) {
-                return ret;
-            }
-            status = setParameter(handle, param, value);
-            reply->writeInt32(status);
-            return NO_ERROR;
-        }
-        case GET_PARAMETER: {
-            CHECK_INTERFACE(ISoundTrigger, data, reply);
-            sound_model_handle_t handle;
-            sound_trigger_model_parameter_t param;
-            int32_t value;
-            status_t status = UNKNOWN_ERROR;
-            status_t ret;
-            ret = data.read(&handle, sizeof(sound_model_handle_t));
-            if (ret != NO_ERROR) {
-                return ret;
-            }
-            ret = data.read(&param, sizeof(sound_trigger_model_parameter_t));
-            if (ret != NO_ERROR) {
-                return ret;
-            }
-            status = getParameter(handle, param, &value);
-            reply->writeInt32(status);
-            reply->writeInt32(value);
-            return NO_ERROR;
-        }
-        case QUERY_PARAMETER: {
-            CHECK_INTERFACE(ISoundTrigger, data, reply);
-            sound_model_handle_t handle;
-            sound_trigger_model_parameter_t param;
-            status_t ret;
-            status_t status = UNKNOWN_ERROR;
-            sound_trigger_model_parameter_range_t retValue;
-            ret = data.read(&handle, sizeof(sound_model_handle_t));
-            if (ret != NO_ERROR) {
-                return ret;
-            }
-            ret = data.read(&param, sizeof(sound_trigger_model_parameter_t));
-            if (ret != NO_ERROR) {
-                return ret;
-            }
-            status = queryParameter(handle, param, &retValue);
-            reply->writeInt32(status);
-            reply->writeInt32(retValue.start);
-            reply->writeInt32(retValue.end);
-            return NO_ERROR;
-        }
-        default:
-            return BBinder::onTransact(code, data, reply, flags);
-    }
-}
-
-// ----------------------------------------------------------------------------
-
-}; // namespace android
diff --git a/soundtrigger/ISoundTriggerClient.cpp b/soundtrigger/ISoundTriggerClient.cpp
deleted file mode 100644
index 1385631..0000000
--- a/soundtrigger/ISoundTriggerClient.cpp
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
-**
-** Copyright 2014, 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 <stdint.h>
-#include <sys/types.h>
-#include <binder/IMemory.h>
-#include <binder/Parcel.h>
-#include <binder/IPCThreadState.h>
-#include <binder/IServiceManager.h>
-#include <soundtrigger/ISoundTriggerClient.h>
-
-namespace android {
-
-enum {
-    ON_RECOGNITION_EVENT = IBinder::FIRST_CALL_TRANSACTION,
-    ON_SOUNDMODEL_EVENT,
-    ON_SERVICE_STATE_CHANGE
-};
-
-class BpSoundTriggerClient: public BpInterface<ISoundTriggerClient>
-{
-
-public:
-    explicit BpSoundTriggerClient(const sp<IBinder>& impl)
-        : BpInterface<ISoundTriggerClient>(impl)
-    {
-    }
-
-    virtual void onRecognitionEvent(const sp<IMemory>& eventMemory)
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(ISoundTriggerClient::getInterfaceDescriptor());
-        data.writeStrongBinder(IInterface::asBinder(eventMemory));
-        remote()->transact(ON_RECOGNITION_EVENT,
-                           data,
-                           &reply);
-    }
-
-    virtual void onSoundModelEvent(const sp<IMemory>& eventMemory)
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(ISoundTriggerClient::getInterfaceDescriptor());
-        data.writeStrongBinder(IInterface::asBinder(eventMemory));
-        remote()->transact(ON_SOUNDMODEL_EVENT,
-                           data,
-                           &reply);
-    }
-    virtual void onServiceStateChange(const sp<IMemory>& eventMemory)
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(ISoundTriggerClient::getInterfaceDescriptor());
-        data.writeStrongBinder(IInterface::asBinder(eventMemory));
-        remote()->transact(ON_SERVICE_STATE_CHANGE,
-                           data,
-                           &reply);
-    }
-};
-
-IMPLEMENT_META_INTERFACE(SoundTriggerClient,
-                         "android.hardware.ISoundTriggerClient");
-
-// ----------------------------------------------------------------------
-
-status_t BnSoundTriggerClient::onTransact(
-    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
-{
-    switch(code) {
-        case ON_RECOGNITION_EVENT: {
-            CHECK_INTERFACE(ISoundTriggerClient, data, reply);
-            sp<IMemory> eventMemory = interface_cast<IMemory>(
-                data.readStrongBinder());
-            onRecognitionEvent(eventMemory);
-            return NO_ERROR;
-        } break;
-        case ON_SOUNDMODEL_EVENT: {
-            CHECK_INTERFACE(ISoundTriggerClient, data, reply);
-            sp<IMemory> eventMemory = interface_cast<IMemory>(
-                data.readStrongBinder());
-            onSoundModelEvent(eventMemory);
-            return NO_ERROR;
-        } break;
-        case ON_SERVICE_STATE_CHANGE: {
-            CHECK_INTERFACE(ISoundTriggerClient, data, reply);
-            sp<IMemory> eventMemory = interface_cast<IMemory>(
-                data.readStrongBinder());
-            onServiceStateChange(eventMemory);
-            return NO_ERROR;
-        } break;
-        default:
-            return BBinder::onTransact(code, data, reply, flags);
-    }
-}
-
-// ----------------------------------------------------------------------------
-
-}; // namespace android
diff --git a/soundtrigger/ISoundTriggerHwService.cpp b/soundtrigger/ISoundTriggerHwService.cpp
deleted file mode 100644
index bd107b4..0000000
--- a/soundtrigger/ISoundTriggerHwService.cpp
+++ /dev/null
@@ -1,197 +0,0 @@
-/*
-**
-** Copyright 2014, 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 "BpSoundTriggerHwService"
-//#define LOG_NDEBUG 0
-
-#include <utils/Log.h>
-#include <utils/Errors.h>
-
-#include <stdint.h>
-#include <sys/types.h>
-#include <binder/IMemory.h>
-#include <binder/Parcel.h>
-#include <binder/IPCThreadState.h>
-#include <binder/IServiceManager.h>
-
-#include <soundtrigger/ISoundTriggerHwService.h>
-#include <soundtrigger/ISoundTrigger.h>
-#include <soundtrigger/ISoundTriggerClient.h>
-
-namespace android {
-
-enum {
-    LIST_MODULES = IBinder::FIRST_CALL_TRANSACTION,
-    ATTACH,
-    SET_CAPTURE_STATE,
-};
-
-#define MAX_ITEMS_PER_LIST 1024
-
-class BpSoundTriggerHwService: public BpInterface<ISoundTriggerHwService>
-{
-public:
-    explicit BpSoundTriggerHwService(const sp<IBinder>& impl)
-        : BpInterface<ISoundTriggerHwService>(impl)
-    {
-    }
-
-    virtual status_t listModules(const String16& opPackageName,
-                                 struct sound_trigger_module_descriptor *modules,
-                                 uint32_t *numModules)
-    {
-        if (numModules == NULL || (*numModules != 0 && modules == NULL)) {
-            return BAD_VALUE;
-        }
-        Parcel data, reply;
-        data.writeInterfaceToken(ISoundTriggerHwService::getInterfaceDescriptor());
-        data.writeString16(opPackageName);
-        unsigned int numModulesReq = (modules == NULL) ? 0 : *numModules;
-        data.writeInt32(numModulesReq);
-        status_t status = remote()->transact(LIST_MODULES, data, &reply);
-        if (status == NO_ERROR) {
-            status = (status_t)reply.readInt32();
-            *numModules = (unsigned int)reply.readInt32();
-        }
-        ALOGV("listModules() status %d got *numModules %d", status, *numModules);
-        if (status == NO_ERROR) {
-            if (numModulesReq > *numModules) {
-                numModulesReq = *numModules;
-            }
-            if (numModulesReq > 0) {
-                reply.read(modules, numModulesReq * sizeof(struct sound_trigger_module_descriptor));
-            }
-        }
-        return status;
-    }
-
-    virtual status_t attach(const String16& opPackageName,
-                            const sound_trigger_module_handle_t handle,
-                            const sp<ISoundTriggerClient>& client,
-                            sp<ISoundTrigger>& module)
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(ISoundTriggerHwService::getInterfaceDescriptor());
-        data.writeString16(opPackageName);
-        data.write(&handle, sizeof(sound_trigger_module_handle_t));
-        data.writeStrongBinder(IInterface::asBinder(client));
-        status_t status = remote()->transact(ATTACH, data, &reply);
-        if (status != NO_ERROR) {
-            return status;
-        }
-        status = reply.readInt32();
-        if (reply.readInt32() != 0) {
-            module = interface_cast<ISoundTrigger>(reply.readStrongBinder());
-        }
-        return status;
-    }
-
-    virtual status_t setCaptureState(bool active)
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(ISoundTriggerHwService::getInterfaceDescriptor());
-        data.writeInt32(active);
-        status_t status = remote()->transact(SET_CAPTURE_STATE, data, &reply);
-        if (status == NO_ERROR) {
-            status = reply.readInt32();
-        }
-        return status;
-    }
-
-};
-
-IMPLEMENT_META_INTERFACE(SoundTriggerHwService, "android.hardware.ISoundTriggerHwService");
-
-// ----------------------------------------------------------------------
-
-status_t BnSoundTriggerHwService::onTransact(
-    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
-{
-    switch(code) {
-        case LIST_MODULES: {
-            CHECK_INTERFACE(ISoundTriggerHwService, data, reply);
-            String16 opPackageName;
-            status_t status = data.readString16(&opPackageName);
-            if (status != NO_ERROR) {
-                return status;
-            }
-            unsigned int numModulesReq = data.readInt32();
-            if (numModulesReq > MAX_ITEMS_PER_LIST) {
-                numModulesReq = MAX_ITEMS_PER_LIST;
-            }
-            unsigned int numModules = numModulesReq;
-            struct sound_trigger_module_descriptor *modules =
-                    (struct sound_trigger_module_descriptor *)calloc(numModulesReq,
-                                                   sizeof(struct sound_trigger_module_descriptor));
-            if (modules == NULL) {
-                reply->writeInt32(NO_MEMORY);
-                reply->writeInt32(0);
-                return NO_ERROR;
-            }
-            status = listModules(opPackageName, modules, &numModules);
-            reply->writeInt32(status);
-            reply->writeInt32(numModules);
-            ALOGV("LIST_MODULES status %d got numModules %d", status, numModules);
-
-            if (status == NO_ERROR) {
-                if (numModulesReq > numModules) {
-                    numModulesReq = numModules;
-                }
-                reply->write(modules,
-                             numModulesReq * sizeof(struct sound_trigger_module_descriptor));
-            }
-            free(modules);
-            return NO_ERROR;
-        }
-
-        case ATTACH: {
-            CHECK_INTERFACE(ISoundTriggerHwService, data, reply);
-            String16 opPackageName;
-            status_t status = data.readString16(&opPackageName);
-            if (status != NO_ERROR) {
-                return status;
-            }
-            sound_trigger_module_handle_t handle;
-            data.read(&handle, sizeof(sound_trigger_module_handle_t));
-            sp<ISoundTriggerClient> client =
-                    interface_cast<ISoundTriggerClient>(data.readStrongBinder());
-            sp<ISoundTrigger> module;
-            status = attach(opPackageName, handle, client, module);
-            reply->writeInt32(status);
-            if (module != 0) {
-                reply->writeInt32(1);
-                reply->writeStrongBinder(IInterface::asBinder(module));
-            } else {
-                reply->writeInt32(0);
-            }
-            return NO_ERROR;
-        } break;
-
-        case SET_CAPTURE_STATE: {
-            CHECK_INTERFACE(ISoundTriggerHwService, data, reply);
-            reply->writeInt32(setCaptureState((bool)data.readInt32()));
-            return NO_ERROR;
-        } break;
-
-        default:
-            return BBinder::onTransact(code, data, reply, flags);
-    }
-}
-
-// ----------------------------------------------------------------------------
-
-}; // namespace android
diff --git a/soundtrigger/OWNERS b/soundtrigger/OWNERS
deleted file mode 100644
index e83f6b9..0000000
--- a/soundtrigger/OWNERS
+++ /dev/null
@@ -1,2 +0,0 @@
-elaurent@google.com
-thorntonc@google.com
diff --git a/soundtrigger/SoundTrigger.cpp b/soundtrigger/SoundTrigger.cpp
deleted file mode 100644
index 021697b..0000000
--- a/soundtrigger/SoundTrigger.cpp
+++ /dev/null
@@ -1,334 +0,0 @@
-/*
-**
-** Copyright (C) 2014, 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 "SoundTrigger"
-//#define LOG_NDEBUG 0
-
-#include <utils/Log.h>
-#include <utils/threads.h>
-#include <binder/IPCThreadState.h>
-#include <binder/IServiceManager.h>
-#include <binder/IMemory.h>
-
-#include <soundtrigger/SoundTrigger.h>
-#include <soundtrigger/ISoundTrigger.h>
-#include <soundtrigger/ISoundTriggerHwService.h>
-#include <soundtrigger/ISoundTriggerClient.h>
-#include <soundtrigger/SoundTriggerCallback.h>
-
-namespace android {
-
-namespace {
-    sp<ISoundTriggerHwService> gSoundTriggerHwService;
-    const int                  kSoundTriggerHwServicePollDelay = 500000; // 0.5s
-    const char*                kSoundTriggerHwServiceName      = "media.sound_trigger_hw";
-    Mutex                      gLock;
-
-    class DeathNotifier : public IBinder::DeathRecipient
-    {
-    public:
-        DeathNotifier() {
-        }
-
-        virtual void binderDied(const wp<IBinder>& who __unused) {
-            ALOGV("binderDied");
-            Mutex::Autolock _l(gLock);
-            gSoundTriggerHwService.clear();
-            ALOGW("Sound trigger service died!");
-        }
-    };
-
-    sp<DeathNotifier>         gDeathNotifier;
-}; // namespace anonymous
-
-const sp<ISoundTriggerHwService> SoundTrigger::getSoundTriggerHwService()
-{
-    Mutex::Autolock _l(gLock);
-    if (gSoundTriggerHwService.get() == 0) {
-        sp<IServiceManager> sm = defaultServiceManager();
-        sp<IBinder> binder;
-        do {
-            binder = sm->getService(String16(kSoundTriggerHwServiceName));
-            if (binder != 0) {
-                break;
-            }
-            ALOGW("SoundTriggerHwService not published, waiting...");
-            usleep(kSoundTriggerHwServicePollDelay);
-        } while(true);
-        if (gDeathNotifier == NULL) {
-            gDeathNotifier = new DeathNotifier();
-        }
-        binder->linkToDeath(gDeathNotifier);
-        gSoundTriggerHwService = interface_cast<ISoundTriggerHwService>(binder);
-    }
-    ALOGE_IF(gSoundTriggerHwService == 0, "no SoundTriggerHwService!?");
-    return gSoundTriggerHwService;
-}
-
-// Static methods
-status_t SoundTrigger::listModules(const String16& opPackageName,
-                                   struct sound_trigger_module_descriptor *modules,
-                                   uint32_t *numModules)
-{
-    ALOGV("listModules()");
-    const sp<ISoundTriggerHwService> service = getSoundTriggerHwService();
-    if (service == 0) {
-        return NO_INIT;
-    }
-    return service->listModules(opPackageName, modules, numModules);
-}
-
-sp<SoundTrigger> SoundTrigger::attach(const String16& opPackageName,
-                                      const sound_trigger_module_handle_t module,
-                                      const sp<SoundTriggerCallback>& callback)
-{
-    ALOGV("attach()");
-    sp<SoundTrigger> soundTrigger;
-    const sp<ISoundTriggerHwService> service = getSoundTriggerHwService();
-    if (service == 0) {
-        return soundTrigger;
-    }
-    soundTrigger = new SoundTrigger(module, callback);
-    status_t status = service->attach(opPackageName, module, soundTrigger,
-                                      soundTrigger->mISoundTrigger);
-
-    if (status == NO_ERROR && soundTrigger->mISoundTrigger != 0) {
-        IInterface::asBinder(soundTrigger->mISoundTrigger)->linkToDeath(soundTrigger);
-    } else {
-        ALOGW("Error %d connecting to sound trigger service", status);
-        soundTrigger.clear();
-    }
-    return soundTrigger;
-}
-
-
-status_t SoundTrigger::setCaptureState(bool active)
-{
-    ALOGV("setCaptureState(%d)", active);
-    const sp<ISoundTriggerHwService> service = getSoundTriggerHwService();
-    if (service == 0) {
-        return NO_INIT;
-    }
-    return service->setCaptureState(active);
-}
-
-// SoundTrigger
-SoundTrigger::SoundTrigger(sound_trigger_module_handle_t /*module*/,
-                                 const sp<SoundTriggerCallback>& callback)
-    : mCallback(callback)
-{
-}
-
-SoundTrigger::~SoundTrigger()
-{
-    if (mISoundTrigger != 0) {
-        mISoundTrigger->detach();
-    }
-}
-
-
-void SoundTrigger::detach() {
-    ALOGV("detach()");
-    Mutex::Autolock _l(mLock);
-    mCallback.clear();
-    if (mISoundTrigger != 0) {
-        mISoundTrigger->detach();
-        IInterface::asBinder(mISoundTrigger)->unlinkToDeath(this);
-        mISoundTrigger = 0;
-    }
-}
-
-status_t SoundTrigger::loadSoundModel(const sp<IMemory>& modelMemory,
-                                sound_model_handle_t *handle)
-{
-    Mutex::Autolock _l(mLock);
-    if (mISoundTrigger == 0) {
-        return NO_INIT;
-    }
-
-    return mISoundTrigger->loadSoundModel(modelMemory, handle);
-}
-
-status_t SoundTrigger::unloadSoundModel(sound_model_handle_t handle)
-{
-    Mutex::Autolock _l(mLock);
-    if (mISoundTrigger == 0) {
-        return NO_INIT;
-    }
-    return mISoundTrigger->unloadSoundModel(handle);
-}
-
-status_t SoundTrigger::startRecognition(sound_model_handle_t handle,
-                                        const sp<IMemory>& dataMemory)
-{
-    Mutex::Autolock _l(mLock);
-    if (mISoundTrigger == 0) {
-        return NO_INIT;
-    }
-    return mISoundTrigger->startRecognition(handle, dataMemory);
-}
-
-status_t SoundTrigger::stopRecognition(sound_model_handle_t handle)
-{
-    Mutex::Autolock _l(mLock);
-    if (mISoundTrigger == 0) {
-        return NO_INIT;
-    }
-    return mISoundTrigger->stopRecognition(handle);
-}
-
-status_t SoundTrigger::getModelState(sound_model_handle_t handle)
-{
-    Mutex::Autolock _l(mLock);
-    if (mISoundTrigger == 0) {
-        return NO_INIT;
-    }
-    return mISoundTrigger->getModelState(handle);
-}
-
-status_t SoundTrigger::setParameter(sound_model_handle_t handle,
-        sound_trigger_model_parameter_t param, int32_t value)
-{
-    Mutex::Autolock _l(mLock);
-    if (mISoundTrigger == 0) {
-        return NO_INIT;
-    }
-    return mISoundTrigger->setParameter(handle, param, value);
-}
-
-status_t SoundTrigger::getParameter(sound_model_handle_t handle,
-        sound_trigger_model_parameter_t param, int32_t* value)
-{
-    Mutex::Autolock _l(mLock);
-    if (mISoundTrigger == 0) {
-        return NO_INIT;
-    }
-    return mISoundTrigger->getParameter(handle, param, value);
-}
-
-status_t SoundTrigger::queryParameter(sound_model_handle_t handle,
-        sound_trigger_model_parameter_t param,
-        sound_trigger_model_parameter_range_t* param_range)
-{
-    Mutex::Autolock _l(mLock);
-    if (mISoundTrigger == 0) {
-        return NO_INIT;
-    }
-    return mISoundTrigger->queryParameter(handle, param, param_range);
-}
-
-// BpSoundTriggerClient
-void SoundTrigger::onRecognitionEvent(const sp<IMemory>& eventMemory)
-{
-    Mutex::Autolock _l(mLock);
-    if (eventMemory == 0 || eventMemory->unsecurePointer() == NULL) {
-        return;
-    }
-
-    if (mCallback != 0) {
-        // Memory is coming from a trusted process.
-        mCallback->onRecognitionEvent(
-                (struct sound_trigger_recognition_event *)eventMemory->unsecurePointer());
-    }
-}
-
-void SoundTrigger::onSoundModelEvent(const sp<IMemory>& eventMemory)
-{
-    Mutex::Autolock _l(mLock);
-    if (eventMemory == 0 || eventMemory->unsecurePointer() == NULL) {
-        return;
-    }
-
-    if (mCallback != 0) {
-        // Memory is coming from a trusted process.
-        mCallback->onSoundModelEvent(
-                (struct sound_trigger_model_event *)eventMemory->unsecurePointer());
-    }
-}
-
-void SoundTrigger::onServiceStateChange(const sp<IMemory>& eventMemory)
-{
-    Mutex::Autolock _l(mLock);
-    if (eventMemory == 0 || eventMemory->unsecurePointer() == NULL) {
-        return;
-    }
-
-    if (mCallback != 0) {
-        // Memory is coming from a trusted process.
-        mCallback->onServiceStateChange(
-                *((sound_trigger_service_state_t *)eventMemory->unsecurePointer()));
-    }
-}
-
-//IBinder::DeathRecipient
-void SoundTrigger::binderDied(const wp<IBinder>& who __unused) {
-    Mutex::Autolock _l(mLock);
-    ALOGW("SoundTrigger server binder Died ");
-    mISoundTrigger = 0;
-    if (mCallback != 0) {
-        mCallback->onServiceDied();
-    }
-}
-
-status_t SoundTrigger::stringToGuid(const char *str, sound_trigger_uuid_t *guid)
-{
-    if (str == NULL || guid == NULL) {
-        return BAD_VALUE;
-    }
-
-    int tmp[10];
-
-    if (sscanf(str, "%08x-%04x-%04x-%04x-%02x%02x%02x%02x%02x%02x",
-            tmp, tmp+1, tmp+2, tmp+3, tmp+4, tmp+5, tmp+6, tmp+7, tmp+8, tmp+9) < 10) {
-        return BAD_VALUE;
-    }
-    guid->timeLow = (uint32_t)tmp[0];
-    guid->timeMid = (uint16_t)tmp[1];
-    guid->timeHiAndVersion = (uint16_t)tmp[2];
-    guid->clockSeq = (uint16_t)tmp[3];
-    guid->node[0] = (uint8_t)tmp[4];
-    guid->node[1] = (uint8_t)tmp[5];
-    guid->node[2] = (uint8_t)tmp[6];
-    guid->node[3] = (uint8_t)tmp[7];
-    guid->node[4] = (uint8_t)tmp[8];
-    guid->node[5] = (uint8_t)tmp[9];
-
-    return NO_ERROR;
-}
-
-status_t SoundTrigger::guidToString(const sound_trigger_uuid_t *guid, char *str, size_t maxLen)
-{
-    if (guid == NULL || str == NULL) {
-        return BAD_VALUE;
-    }
-
-    snprintf(str, maxLen, "%08x-%04x-%04x-%04x-%02x%02x%02x%02x%02x%02x",
-            guid->timeLow,
-            guid->timeMid,
-            guid->timeHiAndVersion,
-            guid->clockSeq,
-            guid->node[0],
-            guid->node[1],
-            guid->node[2],
-            guid->node[3],
-            guid->node[4],
-            guid->node[5]);
-
-    return NO_ERROR;
-}
-
-}; // namespace android