diff --git a/cmds/stagefright/SimplePlayer.h b/cmds/stagefright/SimplePlayer.h
index 918fd24..1269162 100644
--- a/cmds/stagefright/SimplePlayer.h
+++ b/cmds/stagefright/SimplePlayer.h
@@ -22,7 +22,7 @@
 
 struct ABuffer;
 struct ALooper;
-struct AudioTrack;
+class AudioTrack;
 class IGraphicBufferProducer;
 struct MediaCodec;
 class MediaCodecBuffer;
diff --git a/include/camera/CameraParameters2.h b/include/camera/CameraParameters2.h
index 88ad812..f691cd6 100644
--- a/include/camera/CameraParameters2.h
+++ b/include/camera/CameraParameters2.h
@@ -151,7 +151,7 @@
         }
 
         ssize_t removeItem(const KeyT& key) {
-            size_t vectorIdx = (size_t) indexOfKey(key);
+            ssize_t vectorIdx = indexOfKey(key);
 
             if (vectorIdx < 0) {
                 return vectorIdx;
diff --git a/include/media/AudioEffect.h b/include/media/AudioEffect.h
index c69c11d..bfc068b 100644
--- a/include/media/AudioEffect.h
+++ b/include/media/AudioEffect.h
@@ -462,7 +462,7 @@
         }
 
         // IBinder::DeathRecipient
-        virtual void binderDied(const wp<IBinder>& who) {
+        virtual void binderDied(const wp<IBinder>& /*who*/) {
             sp<AudioEffect> effect = mEffect.promote();
             if (effect != 0) {
                 effect->binderDied();
diff --git a/include/media/AudioRecord.h b/include/media/AudioRecord.h
index f7eb397..1c8746f 100644
--- a/include/media/AudioRecord.h
+++ b/include/media/AudioRecord.h
@@ -650,6 +650,8 @@
     //  a value of AUDIO_PORT_HANDLE_NONE indicated default (AudioPolicyManager) routing.
     audio_port_handle_t    mSelectedDeviceId;
     sp<AudioSystem::AudioDeviceCallback> mDeviceCallback;
+    audio_port_handle_t    mPortId;  // unique ID allocated by audio policy
+
 };
 
 }; // namespace android
diff --git a/include/media/AudioSystem.h b/include/media/AudioSystem.h
index 0533ba6..0e9960f 100644
--- a/include/media/AudioSystem.h
+++ b/include/media/AudioSystem.h
@@ -217,12 +217,10 @@
                                      audio_session_t session,
                                      audio_stream_type_t *stream,
                                      uid_t uid,
-                                     uint32_t samplingRate = 0,
-                                     audio_format_t format = AUDIO_FORMAT_DEFAULT,
-                                     audio_channel_mask_t channelMask = AUDIO_CHANNEL_OUT_STEREO,
-                                     audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE,
-                                     audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE,
-                                     const audio_offload_info_t *offloadInfo = NULL);
+                                     const audio_config_t *config,
+                                     audio_output_flags_t flags,
+                                     audio_port_handle_t selectedDeviceId,
+                                     audio_port_handle_t *portId);
     static status_t startOutput(audio_io_handle_t output,
                                 audio_stream_type_t stream,
                                 audio_session_t session);
@@ -240,11 +238,10 @@
                                     audio_session_t session,
                                     pid_t pid,
                                     uid_t uid,
-                                    uint32_t samplingRate,
-                                    audio_format_t format,
-                                    audio_channel_mask_t channelMask,
+                                    const audio_config_base_t *config,
                                     audio_input_flags_t flags,
-                                    audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE);
+                                    audio_port_handle_t selectedDeviceId,
+                                    audio_port_handle_t *portId);
 
     static status_t startInput(audio_io_handle_t input,
                                audio_session_t session);
diff --git a/include/media/AudioTrack.h b/include/media/AudioTrack.h
index 7c5686a..cd33a44 100644
--- a/include/media/AudioTrack.h
+++ b/include/media/AudioTrack.h
@@ -1134,6 +1134,7 @@
     pid_t                   mClientPid;
 
     sp<AudioSystem::AudioDeviceCallback> mDeviceCallback;
+    audio_port_handle_t     mPortId;  // unique ID allocated by audio policy
 };
 
 }; // namespace android
diff --git a/include/media/ExtendedAudioBufferProvider.h b/include/media/ExtendedAudioBufferProvider.h
index 168ceed..51e4713 100644
--- a/include/media/ExtendedAudioBufferProvider.h
+++ b/include/media/ExtendedAudioBufferProvider.h
@@ -31,7 +31,7 @@
 
     // Invoked by buffer consumer when a new timestamp is available.
     // Default implementation ignores the timestamp.
-    virtual void    onTimestamp(const ExtendedTimestamp& timestamp) { }
+    virtual void    onTimestamp(const ExtendedTimestamp& /*timestamp*/) { }
 };
 
 }   // namespace android
diff --git a/include/media/IAudioFlinger.h b/include/media/IAudioFlinger.h
index 8feb8c5..8c5e61a 100644
--- a/include/media/IAudioFlinger.h
+++ b/include/media/IAudioFlinger.h
@@ -66,7 +66,8 @@
                                 pid_t tid,  // -1 means unused, otherwise must be valid non-0
                                 audio_session_t *sessionId,
                                 int clientUid,
-                                status_t *status) = 0;
+                                status_t *status,
+                                audio_port_handle_t portId) = 0;
 
     virtual sp<IAudioRecord> openRecord(
                                 // On successful return, AudioFlinger takes over the handle
@@ -86,7 +87,8 @@
                                 size_t *notificationFrames,
                                 sp<IMemory>& cblk,
                                 sp<IMemory>& buffers,   // return value 0 means it follows cblk
-                                status_t *status) = 0;
+                                status_t *status,
+                                audio_port_handle_t portId) = 0;
 
     // FIXME Surprisingly, format/latency don't work for input handles
 
diff --git a/include/media/IAudioPolicyService.h b/include/media/IAudioPolicyService.h
index 5637dd5..e8db4b1 100644
--- a/include/media/IAudioPolicyService.h
+++ b/include/media/IAudioPolicyService.h
@@ -63,12 +63,10 @@
                                       audio_session_t session,
                                       audio_stream_type_t *stream,
                                       uid_t uid,
-                                      uint32_t samplingRate = 0,
-                                      audio_format_t format = AUDIO_FORMAT_DEFAULT,
-                                      audio_channel_mask_t channelMask = 0,
-                                      audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE,
-                                      audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE,
-                                      const audio_offload_info_t *offloadInfo = NULL) = 0;
+                                      const audio_config_t *config,
+                                      audio_output_flags_t flags,
+                                      audio_port_handle_t selectedDeviceId,
+                                      audio_port_handle_t *portId) = 0;
     virtual status_t startOutput(audio_io_handle_t output,
                                  audio_stream_type_t stream,
                                  audio_session_t session) = 0;
@@ -83,11 +81,10 @@
                               audio_session_t session,
                               pid_t pid,
                               uid_t uid,
-                              uint32_t samplingRate,
-                              audio_format_t format,
-                              audio_channel_mask_t channelMask,
+                              const audio_config_base_t *config,
                               audio_input_flags_t flags,
-                              audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE) = 0;
+                              audio_port_handle_t selectedDeviceId,
+                              audio_port_handle_t *portId) = 0;
     virtual status_t startInput(audio_io_handle_t input,
                                 audio_session_t session) = 0;
     virtual status_t stopInput(audio_io_handle_t input,
diff --git a/include/media/IMediaPlayerService.h b/include/media/IMediaPlayerService.h
index 8266b0b..f21bb3a 100644
--- a/include/media/IMediaPlayerService.h
+++ b/include/media/IMediaPlayerService.h
@@ -32,7 +32,7 @@
 namespace android {
 
 struct IHDCP;
-struct IMediaCodecList;
+class IMediaCodecList;
 struct IMediaHTTPService;
 class IMediaRecorder;
 class IOMX;
diff --git a/include/media/MediaCodecInfo.h b/include/media/MediaCodecInfo.h
index 48d0407..6b50f22 100644
--- a/include/media/MediaCodecInfo.h
+++ b/include/media/MediaCodecInfo.h
@@ -74,7 +74,7 @@
 
         DISALLOW_EVIL_CONSTRUCTORS(Capabilities);
 
-        friend class MediaCodecInfo;
+        friend struct MediaCodecInfo;
     };
 
     // Use a subclass to allow setting fields on construction without allowing
@@ -136,7 +136,7 @@
 
     DISALLOW_EVIL_CONSTRUCTORS(MediaCodecInfo);
 
-    friend class MediaCodecList;
+    friend struct MediaCodecList;
     friend class MediaCodecListOverridesTest;
 };
 
diff --git a/include/media/MediaMetadataRetrieverInterface.h b/include/media/MediaMetadataRetrieverInterface.h
index bce6ee3..a5e1350 100644
--- a/include/media/MediaMetadataRetrieverInterface.h
+++ b/include/media/MediaMetadataRetrieverInterface.h
@@ -54,9 +54,9 @@
     MediaMetadataRetrieverInterface() {}
 
     virtual             ~MediaMetadataRetrieverInterface() {}
-    virtual VideoFrame* getFrameAtTime(int64_t timeUs, int option) { return NULL; }
+    virtual VideoFrame* getFrameAtTime(int64_t /*timeUs*/, int /*option*/) { return NULL; }
     virtual MediaAlbumArt* extractAlbumArt() { return NULL; }
-    virtual const char* extractMetadata(int keyCode) { return NULL; }
+    virtual const char* extractMetadata(int /*keyCode*/) { return NULL; }
 };
 
 }; // namespace android
diff --git a/include/media/MediaRecorderBase.h b/include/media/MediaRecorderBase.h
index 59dfd18..b9105b1 100644
--- a/include/media/MediaRecorderBase.h
+++ b/include/media/MediaRecorderBase.h
@@ -45,7 +45,7 @@
                                const sp<ICameraRecordingProxy>& proxy) = 0;
     virtual status_t setPreviewSurface(const sp<IGraphicBufferProducer>& surface) = 0;
     virtual status_t setOutputFile(int fd, int64_t offset, int64_t length) = 0;
-    virtual status_t setOutputFileAuxiliary(int fd) {return INVALID_OPERATION;}
+    virtual status_t setOutputFileAuxiliary(int /*fd*/) {return INVALID_OPERATION;}
     virtual status_t setParameters(const String8& params) = 0;
     virtual status_t setListener(const sp<IMediaRecorderClient>& listener) = 0;
     virtual status_t setClientName(const String16& clientName) = 0;
diff --git a/include/media/nbaio/NBAIO.h b/include/media/nbaio/NBAIO.h
index 3fd97ac..9dd9125 100644
--- a/include/media/nbaio/NBAIO.h
+++ b/include/media/nbaio/NBAIO.h
@@ -215,7 +215,7 @@
     // Returns NO_ERROR if a timestamp is available.  The timestamp includes the total number
     // of frames presented to an external observer, together with the value of CLOCK_MONOTONIC
     // as of this presentation count.  The timestamp parameter is undefined if error is returned.
-    virtual status_t getTimestamp(ExtendedTimestamp &timestamp) { return INVALID_OPERATION; }
+    virtual status_t getTimestamp(ExtendedTimestamp& /*timestamp*/) { return INVALID_OPERATION; }
 
 protected:
     NBAIO_Sink(const NBAIO_Format& format = Format_Invalid) : NBAIO_Port(format), mFramesWritten(0)
@@ -313,7 +313,7 @@
 
     // Invoked asynchronously by corresponding sink when a new timestamp is available.
     // Default implementation ignores the timestamp.
-    virtual void    onTimestamp(const ExtendedTimestamp& timestamp) { }
+    virtual void    onTimestamp(const ExtendedTimestamp& /*timestamp*/) { }
 
 protected:
     NBAIO_Source(const NBAIO_Format& format = Format_Invalid) : NBAIO_Port(format), mFramesRead(0)
diff --git a/include/media/stagefright/ACodec.h b/include/media/stagefright/ACodec.h
index cde188c..3420617 100644
--- a/include/media/stagefright/ACodec.h
+++ b/include/media/stagefright/ACodec.h
@@ -37,7 +37,7 @@
 struct ABuffer;
 class ACodecBufferChannel;
 class MediaCodecBuffer;
-struct MemoryDealer;
+class MemoryDealer;
 struct DescribeColorFormat2Params;
 struct DataConverter;
 
diff --git a/include/media/stagefright/CameraSource.h b/include/media/stagefright/CameraSource.h
index c2e75a6..c604f2d 100644
--- a/include/media/stagefright/CameraSource.h
+++ b/include/media/stagefright/CameraSource.h
@@ -216,10 +216,10 @@
 
     // Returns true if need to skip the current frame.
     // Called from dataCallbackTimestamp.
-    virtual bool skipCurrentFrame(int64_t timestampUs) {return false;}
+    virtual bool skipCurrentFrame(int64_t /*timestampUs*/) {return false;}
 
     // Callback called when still camera raw data is available.
-    virtual void dataCallback(int32_t msgType, const sp<IMemory> &data) {}
+    virtual void dataCallback(int32_t /*msgType*/, const sp<IMemory>& /*data*/) {}
 
     virtual void dataCallbackTimestamp(int64_t timestampUs, int32_t msgType,
             const sp<IMemory> &data);
diff --git a/include/media/stagefright/CodecBase.h b/include/media/stagefright/CodecBase.h
index 52daa9e..cfbaea4 100644
--- a/include/media/stagefright/CodecBase.h
+++ b/include/media/stagefright/CodecBase.h
@@ -209,10 +209,10 @@
     virtual void onMessageReceived(const sp<AMessage> &msg) = 0;
 
     virtual status_t queryCapabilities(
-            const AString &name, const AString &mime, bool isEncoder,
-            sp<MediaCodecInfo::Capabilities> *caps /* nonnull */) { return INVALID_OPERATION; }
+            const AString& /*name*/, const AString& /*mime*/, bool /*isEncoder*/,
+            sp<MediaCodecInfo::Capabilities>* /*caps*/ /* nonnull */) { return INVALID_OPERATION; }
 
-    virtual status_t setSurface(const sp<Surface> &surface) { return INVALID_OPERATION; }
+    virtual status_t setSurface(const sp<Surface>& /*surface*/) { return INVALID_OPERATION; }
 
     virtual void signalFlush() = 0;
     virtual void signalResume() = 0;
diff --git a/include/media/stagefright/DataSource.h b/include/media/stagefright/DataSource.h
index a8dcbe0..e7135a2 100644
--- a/include/media/stagefright/DataSource.h
+++ b/include/media/stagefright/DataSource.h
@@ -97,17 +97,17 @@
         return String8("<unspecified>");
     }
 
-    virtual status_t reconnectAtOffset(off64_t offset) {
+    virtual status_t reconnectAtOffset(off64_t /*offset*/) {
         return ERROR_UNSUPPORTED;
     }
 
     ////////////////////////////////////////////////////////////////////////////
 
     // for DRM
-    virtual sp<DecryptHandle> DrmInitialization(const char *mime = NULL) {
+    virtual sp<DecryptHandle> DrmInitialization(const char * /*mime*/ = NULL) {
         return NULL;
     }
-    virtual void getDrmInfo(sp<DecryptHandle> &handle, DrmManagerClient **client) {};
+    virtual void getDrmInfo(sp<DecryptHandle> &/*handle*/, DrmManagerClient ** /*client*/) {};
 
     virtual String8 getUri() {
         return String8();
diff --git a/include/media/stagefright/FrameRenderTracker.h b/include/media/stagefright/FrameRenderTracker.h
index 6c572b8..6cbf85d 100644
--- a/include/media/stagefright/FrameRenderTracker.h
+++ b/include/media/stagefright/FrameRenderTracker.h
@@ -82,7 +82,7 @@
     sp<GraphicBuffer> mGraphicBuffer;
     sp<Fence> mFence;
 
-    friend class FrameRenderTracker;
+    friend struct FrameRenderTracker;
 };
 
 struct FrameRenderTracker {
diff --git a/include/media/stagefright/MPEG4Writer.h b/include/media/stagefright/MPEG4Writer.h
index 9434047..d415b8b 100644
--- a/include/media/stagefright/MPEG4Writer.h
+++ b/include/media/stagefright/MPEG4Writer.h
@@ -27,7 +27,7 @@
 
 namespace android {
 
-class AMessage;
+struct AMessage;
 class MediaBuffer;
 class MetaData;
 
diff --git a/include/media/stagefright/MediaCodec.h b/include/media/stagefright/MediaCodec.h
index 50fb312..2e367bf 100644
--- a/include/media/stagefright/MediaCodec.h
+++ b/include/media/stagefright/MediaCodec.h
@@ -44,7 +44,7 @@
 class IResourceManagerClient;
 class IResourceManagerService;
 struct PersistentSurface;
-struct SoftwareRenderer;
+class SoftwareRenderer;
 class Surface;
 
 struct MediaCodec : public AHandler {
diff --git a/include/media/stagefright/MediaExtractor.h b/include/media/stagefright/MediaExtractor.h
index 4de1521..fbb4a67 100644
--- a/include/media/stagefright/MediaExtractor.h
+++ b/include/media/stagefright/MediaExtractor.h
@@ -24,7 +24,7 @@
 namespace android {
 
 class DataSource;
-class MediaSource;
+struct MediaSource;
 class MetaData;
 
 class MediaExtractor : public BnMediaExtractor {
@@ -59,10 +59,10 @@
     virtual uint32_t flags() const;
 
     // for DRM
-    virtual char* getDrmTrackInfo(size_t trackID, int *len) {
+    virtual char* getDrmTrackInfo(size_t /*trackID*/, int * /*len*/) {
         return NULL;
     }
-    virtual void setUID(uid_t uid) {
+    virtual void setUID(uid_t /*uid*/) {
     }
 
     virtual const char * name() { return "<unspecified>"; }
diff --git a/include/media/stagefright/MediaFilter.h b/include/media/stagefright/MediaFilter.h
index 0e4539b..0c10d11 100644
--- a/include/media/stagefright/MediaFilter.h
+++ b/include/media/stagefright/MediaFilter.h
@@ -23,7 +23,7 @@
 
 class ACodecBufferChannel;
 struct GraphicBufferListener;
-struct MemoryDealer;
+class MemoryDealer;
 struct SimpleFilter;
 
 struct MediaFilter : public CodecBase {
diff --git a/include/media/stagefright/MediaWriter.h b/include/media/stagefright/MediaWriter.h
index b6476c9..2b19523 100644
--- a/include/media/stagefright/MediaWriter.h
+++ b/include/media/stagefright/MediaWriter.h
@@ -44,11 +44,11 @@
         mListener = listener;
     }
 
-    virtual status_t dump(int fd, const Vector<String16>& args) {
+    virtual status_t dump(int /*fd*/, const Vector<String16>& /*args*/) {
         return OK;
     }
 
-    virtual void setStartTimeOffsetMs(int ms) {}
+    virtual void setStartTimeOffsetMs(int /*ms*/) {}
     virtual int32_t getStartTimeOffsetMs() const { return 0; }
 
 protected:
diff --git a/include/media/stagefright/NuMediaExtractor.h b/include/media/stagefright/NuMediaExtractor.h
index a8aca5a..e414757 100644
--- a/include/media/stagefright/NuMediaExtractor.h
+++ b/include/media/stagefright/NuMediaExtractor.h
@@ -34,7 +34,7 @@
 class DataSource;
 struct IMediaHTTPService;
 class MediaBuffer;
-struct MediaExtractor;
+class MediaExtractor;
 struct MediaSource;
 class MetaData;
 
diff --git a/media/libaudioclient/AudioRecord.cpp b/media/libaudioclient/AudioRecord.cpp
index 778540c..4c1fbd7 100644
--- a/media/libaudioclient/AudioRecord.cpp
+++ b/media/libaudioclient/AudioRecord.cpp
@@ -68,7 +68,7 @@
 AudioRecord::AudioRecord(const String16 &opPackageName)
     : mActive(false), mStatus(NO_INIT), mOpPackageName(opPackageName), mSessionId(AUDIO_SESSION_ALLOCATE),
       mPreviousPriority(ANDROID_PRIORITY_NORMAL), mPreviousSchedulingGroup(SP_DEFAULT),
-      mSelectedDeviceId(AUDIO_PORT_HANDLE_NONE)
+      mSelectedDeviceId(AUDIO_PORT_HANDLE_NONE), mPortId(AUDIO_PORT_HANDLE_NONE)
 {
 }
 
@@ -95,7 +95,8 @@
       mPreviousPriority(ANDROID_PRIORITY_NORMAL),
       mPreviousSchedulingGroup(SP_DEFAULT),
       mProxy(NULL),
-      mSelectedDeviceId(AUDIO_PORT_HANDLE_NONE)
+      mSelectedDeviceId(AUDIO_PORT_HANDLE_NONE),
+      mPortId(AUDIO_PORT_HANDLE_NONE)
 {
     mStatus = set(inputSource, sampleRate, format, channelMask, frameCount, cbf, user,
             notificationFrames, false /*threadCanCallJava*/, sessionId, transferType, flags,
@@ -529,14 +530,18 @@
     // The sp<> references will be dropped when re-entering scope.
     // The lack of indentation is deliberate, to reduce code churn and ease merges.
     for (;;) {
-
+    audio_config_base_t config  = {
+            .sample_rate = mSampleRate,
+            .channel_mask = mChannelMask,
+            .format = mFormat
+        };
     status = AudioSystem::getInputForAttr(&mAttributes, &input,
                                         mSessionId,
                                         // FIXME compare to AudioTrack
                                         mClientPid,
                                         mClientUid,
-                                        mSampleRate, mFormat, mChannelMask,
-                                        mFlags, mSelectedDeviceId);
+                                        &config,
+                                        mFlags, mSelectedDeviceId, &mPortId);
 
     if (status != NO_ERROR || input == AUDIO_IO_HANDLE_NONE) {
         ALOGE("Could not get audio input for session %d, record source %d, sample rate %u, "
@@ -622,7 +627,8 @@
                                                        &notificationFrames,
                                                        iMem,
                                                        bufferMem,
-                                                       &status);
+                                                       &status,
+                                                       mPortId);
     ALOGE_IF(originalSessionId != AUDIO_SESSION_ALLOCATE && mSessionId != originalSessionId,
             "session ID changed from %d to %d", originalSessionId, mSessionId);
 
diff --git a/media/libaudioclient/AudioSystem.cpp b/media/libaudioclient/AudioSystem.cpp
index d45b12f..f7ba757 100644
--- a/media/libaudioclient/AudioSystem.cpp
+++ b/media/libaudioclient/AudioSystem.cpp
@@ -792,18 +792,16 @@
                                         audio_session_t session,
                                         audio_stream_type_t *stream,
                                         uid_t uid,
-                                        uint32_t samplingRate,
-                                        audio_format_t format,
-                                        audio_channel_mask_t channelMask,
+                                        const audio_config_t *config,
                                         audio_output_flags_t flags,
                                         audio_port_handle_t selectedDeviceId,
-                                        const audio_offload_info_t *offloadInfo)
+                                        audio_port_handle_t *portId)
 {
     const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
     if (aps == 0) return NO_INIT;
     return aps->getOutputForAttr(attr, output, session, stream, uid,
-                                 samplingRate, format, channelMask,
-                                 flags, selectedDeviceId, offloadInfo);
+                                 config,
+                                 flags, selectedDeviceId, portId);
 }
 
 status_t AudioSystem::startOutput(audio_io_handle_t output,
@@ -838,17 +836,16 @@
                                 audio_session_t session,
                                 pid_t pid,
                                 uid_t uid,
-                                uint32_t samplingRate,
-                                audio_format_t format,
-                                audio_channel_mask_t channelMask,
+                                const audio_config_base_t *config,
                                 audio_input_flags_t flags,
-                                audio_port_handle_t selectedDeviceId)
+                                audio_port_handle_t selectedDeviceId,
+                                audio_port_handle_t *portId)
 {
     const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
     if (aps == 0) return NO_INIT;
     return aps->getInputForAttr(
             attr, input, session, pid, uid,
-            samplingRate, format, channelMask, flags, selectedDeviceId);
+            config, flags, selectedDeviceId, portId);
 }
 
 status_t AudioSystem::startInput(audio_io_handle_t input,
diff --git a/media/libaudioclient/AudioTrack.cpp b/media/libaudioclient/AudioTrack.cpp
index aef7dfb..f9ab208 100644
--- a/media/libaudioclient/AudioTrack.cpp
+++ b/media/libaudioclient/AudioTrack.cpp
@@ -183,7 +183,8 @@
       mPreviousPriority(ANDROID_PRIORITY_NORMAL),
       mPreviousSchedulingGroup(SP_DEFAULT),
       mPausedPosition(0),
-      mSelectedDeviceId(AUDIO_PORT_HANDLE_NONE)
+      mSelectedDeviceId(AUDIO_PORT_HANDLE_NONE),
+      mPortId(AUDIO_PORT_HANDLE_NONE)
 {
     mAttributes.content_type = AUDIO_CONTENT_TYPE_UNKNOWN;
     mAttributes.usage = AUDIO_USAGE_UNKNOWN;
@@ -214,7 +215,8 @@
       mPreviousPriority(ANDROID_PRIORITY_NORMAL),
       mPreviousSchedulingGroup(SP_DEFAULT),
       mPausedPosition(0),
-      mSelectedDeviceId(AUDIO_PORT_HANDLE_NONE)
+      mSelectedDeviceId(AUDIO_PORT_HANDLE_NONE),
+      mPortId(AUDIO_PORT_HANDLE_NONE)
 {
     mStatus = set(streamType, sampleRate, format, channelMask,
             frameCount, flags, cbf, user, notificationFrames,
@@ -245,7 +247,8 @@
       mPreviousPriority(ANDROID_PRIORITY_NORMAL),
       mPreviousSchedulingGroup(SP_DEFAULT),
       mPausedPosition(0),
-      mSelectedDeviceId(AUDIO_PORT_HANDLE_NONE)
+      mSelectedDeviceId(AUDIO_PORT_HANDLE_NONE),
+      mPortId(AUDIO_PORT_HANDLE_NONE)
 {
     mStatus = set(streamType, sampleRate, format, channelMask,
             0 /*frameCount*/, flags, cbf, user, notificationFrames,
@@ -452,6 +455,7 @@
         mOffloadInfo = &mOffloadInfoCopy;
     } else {
         mOffloadInfo = NULL;
+        memset(&mOffloadInfoCopy, 0, sizeof(audio_offload_info_t));
     }
 
     mVolume[AUDIO_INTERLEAVE_LEFT] = 1.0f;
@@ -1255,10 +1259,15 @@
     // After fast request is denied, we will request again if IAudioTrack is re-created.
 
     status_t status;
+    audio_config_t config = AUDIO_CONFIG_INITIALIZER;
+    config.sample_rate = mSampleRate;
+    config.channel_mask = mChannelMask;
+    config.format = mFormat;
+    config.offload_info = mOffloadInfoCopy;
     status = AudioSystem::getOutputForAttr(attr, &output,
                                            mSessionId, &streamType, mClientUid,
-                                           mSampleRate, mFormat, mChannelMask,
-                                           mFlags, mSelectedDeviceId, mOffloadInfo);
+                                           &config,
+                                           mFlags, mSelectedDeviceId, &mPortId);
 
     if (status != NO_ERROR || output == AUDIO_IO_HANDLE_NONE) {
         ALOGE("Could not get audio output for session %d, stream type %d, usage %d, sample rate %u, format %#x,"
@@ -1416,7 +1425,8 @@
                                                       tid,
                                                       &mSessionId,
                                                       mClientUid,
-                                                      &status);
+                                                      &status,
+                                                      mPortId);
     ALOGE_IF(originalSessionId != AUDIO_SESSION_ALLOCATE && mSessionId != originalSessionId,
             "session ID changed from %d to %d", originalSessionId, mSessionId);
 
diff --git a/media/libaudioclient/IAudioFlinger.cpp b/media/libaudioclient/IAudioFlinger.cpp
index 31a18a4..255e350 100644
--- a/media/libaudioclient/IAudioFlinger.cpp
+++ b/media/libaudioclient/IAudioFlinger.cpp
@@ -108,7 +108,8 @@
                                 pid_t tid,
                                 audio_session_t *sessionId,
                                 int clientUid,
-                                status_t *status)
+                                status_t *status,
+                                audio_port_handle_t portId)
     {
         Parcel data, reply;
         sp<IAudioTrack> track;
@@ -137,6 +138,7 @@
         }
         data.writeInt32(lSessionId);
         data.writeInt32(clientUid);
+        data.writeInt32(portId);
         status_t lStatus = remote()->transact(CREATE_TRACK, data, &reply);
         if (lStatus != NO_ERROR) {
             ALOGE("createTrack error: %s", strerror(-lStatus));
@@ -188,7 +190,8 @@
                                 size_t *notificationFrames,
                                 sp<IMemory>& cblk,
                                 sp<IMemory>& buffers,
-                                status_t *status)
+                                status_t *status,
+                                audio_port_handle_t portId)
     {
         Parcel data, reply;
         sp<IAudioRecord> record;
@@ -211,6 +214,7 @@
         }
         data.writeInt32(lSessionId);
         data.writeInt64(notificationFrames != NULL ? *notificationFrames : 0);
+        data.writeInt32(portId);
         cblk.clear();
         buffers.clear();
         status_t lStatus = remote()->transact(OPEN_RECORD, data, &reply);
@@ -960,6 +964,7 @@
             pid_t tid = (pid_t) data.readInt32();
             audio_session_t sessionId = (audio_session_t) data.readInt32();
             int clientUid = data.readInt32();
+            audio_port_handle_t portId = (audio_port_handle_t) data.readInt32();
             status_t status = NO_ERROR;
             sp<IAudioTrack> track;
             if ((haveSharedBuffer && (buffer == 0)) ||
@@ -970,7 +975,7 @@
                 track = createTrack(
                         (audio_stream_type_t) streamType, sampleRate, format,
                         channelMask, &frameCount, &flags, buffer, output, pid, tid,
-                        &sessionId, clientUid, &status);
+                        &sessionId, clientUid, &status, portId);
                 LOG_ALWAYS_FATAL_IF((track != 0) != (status == NO_ERROR));
             }
             reply->writeInt64(frameCount);
@@ -994,13 +999,14 @@
             int clientUid = data.readInt32();
             audio_session_t sessionId = (audio_session_t) data.readInt32();
             size_t notificationFrames = data.readInt64();
+            audio_port_handle_t portId = (audio_port_handle_t) data.readInt32();
             sp<IMemory> cblk;
             sp<IMemory> buffers;
             status_t status = NO_ERROR;
             sp<IAudioRecord> record = openRecord(input,
                     sampleRate, format, channelMask, opPackageName, &frameCount, &flags,
                     pid, tid, clientUid, &sessionId, &notificationFrames, cblk, buffers,
-                    &status);
+                    &status, portId);
             LOG_ALWAYS_FATAL_IF((record != 0) != (status == NO_ERROR));
             reply->writeInt64(frameCount);
             reply->writeInt32(flags);
diff --git a/media/libaudioclient/IAudioPolicyService.cpp b/media/libaudioclient/IAudioPolicyService.cpp
index 2fb2da6..bc5502e 100644
--- a/media/libaudioclient/IAudioPolicyService.cpp
+++ b/media/libaudioclient/IAudioPolicyService.cpp
@@ -175,12 +175,10 @@
                                         audio_session_t session,
                                         audio_stream_type_t *stream,
                                         uid_t uid,
-                                        uint32_t samplingRate,
-                                        audio_format_t format,
-                                        audio_channel_mask_t channelMask,
+                                        const audio_config_t *config,
                                         audio_output_flags_t flags,
                                         audio_port_handle_t selectedDeviceId,
-                                        const audio_offload_info_t *offloadInfo)
+                                        audio_port_handle_t *portId)
         {
             Parcel data, reply;
             data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
@@ -198,6 +196,10 @@
                 ALOGE("getOutputForAttr NULL output - shouldn't happen");
                 return BAD_VALUE;
             }
+            if (portId == NULL) {
+                ALOGE("getOutputForAttr NULL portId - shouldn't happen");
+                return BAD_VALUE;
+            }
             if (attr == NULL) {
                 data.writeInt32(0);
             } else {
@@ -212,18 +214,10 @@
                 data.writeInt32(*stream);
             }
             data.writeInt32(uid);
-            data.writeInt32(samplingRate);
-            data.writeInt32(static_cast <uint32_t>(format));
-            data.writeInt32(channelMask);
+            data.write(config, sizeof(audio_config_t));
             data.writeInt32(static_cast <uint32_t>(flags));
             data.writeInt32(selectedDeviceId);
-            // hasOffloadInfo
-            if (offloadInfo == NULL) {
-                data.writeInt32(0);
-            } else {
-                data.writeInt32(1);
-                data.write(offloadInfo, sizeof(audio_offload_info_t));
-            }
+            data.writeInt32(*portId);
             status_t status = remote()->transact(GET_OUTPUT_FOR_ATTR, data, &reply);
             if (status != NO_ERROR) {
                 return status;
@@ -233,9 +227,11 @@
                 return status;
             }
             *output = (audio_io_handle_t)reply.readInt32();
+            audio_stream_type_t lStream = (audio_stream_type_t)reply.readInt32();
             if (stream != NULL) {
-                *stream = (audio_stream_type_t)reply.readInt32();
+                *stream = lStream;
             }
+            *portId = (audio_port_handle_t)reply.readInt32();
             return status;
         }
 
@@ -282,11 +278,10 @@
                                      audio_session_t session,
                                      pid_t pid,
                                      uid_t uid,
-                                     uint32_t samplingRate,
-                                     audio_format_t format,
-                                     audio_channel_mask_t channelMask,
+                                     const audio_config_base_t *config,
                                      audio_input_flags_t flags,
-                                     audio_port_handle_t selectedDeviceId)
+                                     audio_port_handle_t selectedDeviceId,
+                                     audio_port_handle_t *portId)
     {
         Parcel data, reply;
         data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
@@ -298,15 +293,18 @@
             ALOGE("getInputForAttr NULL input - shouldn't happen");
             return BAD_VALUE;
         }
+        if (portId == NULL) {
+            ALOGE("getInputForAttr NULL portId - shouldn't happen");
+            return BAD_VALUE;
+        }
         data.write(attr, sizeof(audio_attributes_t));
         data.writeInt32(session);
         data.writeInt32(pid);
         data.writeInt32(uid);
-        data.writeInt32(samplingRate);
-        data.writeInt32(static_cast <uint32_t>(format));
-        data.writeInt32(channelMask);
+        data.write(config, sizeof(audio_config_base_t));
         data.writeInt32(flags);
         data.writeInt32(selectedDeviceId);
+        data.writeInt32(*portId);
         status_t status = remote()->transact(GET_INPUT_FOR_ATTR, data, &reply);
         if (status != NO_ERROR) {
             return status;
@@ -316,6 +314,7 @@
             return status;
         }
         *input = (audio_io_handle_t)reply.readInt32();
+        *portId = (audio_port_handle_t)reply.readInt32();
         return NO_ERROR;
     }
 
@@ -901,25 +900,22 @@
                 stream = (audio_stream_type_t)data.readInt32();
             }
             uid_t uid = (uid_t)data.readInt32();
-            uint32_t samplingRate = data.readInt32();
-            audio_format_t format = (audio_format_t) data.readInt32();
-            audio_channel_mask_t channelMask = data.readInt32();
+            audio_config_t config;
+            memset(&config, 0, sizeof(audio_config_t));
+            data.read(&config, sizeof(audio_config_t));
             audio_output_flags_t flags =
                     static_cast <audio_output_flags_t>(data.readInt32());
             audio_port_handle_t selectedDeviceId = data.readInt32();
-            bool hasOffloadInfo = data.readInt32() != 0;
-            audio_offload_info_t offloadInfo;
-            if (hasOffloadInfo) {
-                data.read(&offloadInfo, sizeof(audio_offload_info_t));
-            }
+            audio_port_handle_t portId = (audio_port_handle_t)data.readInt32();
             audio_io_handle_t output = 0;
             status_t status = getOutputForAttr(hasAttributes ? &attr : NULL,
                     &output, session, &stream, uid,
-                    samplingRate, format, channelMask,
-                    flags, selectedDeviceId, hasOffloadInfo ? &offloadInfo : NULL);
+                    &config,
+                    flags, selectedDeviceId, &portId);
             reply->writeInt32(status);
             reply->writeInt32(output);
             reply->writeInt32(stream);
+            reply->writeInt32(portId);
             return NO_ERROR;
         } break;
 
@@ -963,18 +959,20 @@
             audio_session_t session = (audio_session_t)data.readInt32();
             pid_t pid = (pid_t)data.readInt32();
             uid_t uid = (uid_t)data.readInt32();
-            uint32_t samplingRate = data.readInt32();
-            audio_format_t format = (audio_format_t) data.readInt32();
-            audio_channel_mask_t channelMask = data.readInt32();
+            audio_config_base_t config;
+            memset(&config, 0, sizeof(audio_config_base_t));
+            data.read(&config, sizeof(audio_config_base_t));
             audio_input_flags_t flags = (audio_input_flags_t) data.readInt32();
             audio_port_handle_t selectedDeviceId = (audio_port_handle_t) data.readInt32();
+            audio_port_handle_t portId = (audio_port_handle_t)data.readInt32();
             audio_io_handle_t input = AUDIO_IO_HANDLE_NONE;
             status_t status = getInputForAttr(&attr, &input, session, pid, uid,
-                                              samplingRate, format, channelMask,
-                                              flags, selectedDeviceId);
+                                              &config,
+                                              flags, selectedDeviceId, &portId);
             reply->writeInt32(status);
             if (status == NO_ERROR) {
                 reply->writeInt32(input);
+                reply->writeInt32(portId);
             }
             return NO_ERROR;
         } break;
diff --git a/media/libmediaplayerservice/MediaRecorderClient.h b/media/libmediaplayerservice/MediaRecorderClient.h
index 12656cf..83ef80a 100644
--- a/media/libmediaplayerservice/MediaRecorderClient.h
+++ b/media/libmediaplayerservice/MediaRecorderClient.h
@@ -22,7 +22,7 @@
 
 namespace android {
 
-class MediaRecorderBase;
+struct MediaRecorderBase;
 class MediaPlayerService;
 class ICameraRecordingProxy;
 
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index cf30aa9..d08309b 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -547,7 +547,8 @@
         pid_t tid,
         audio_session_t *sessionId,
         int clientUid,
-        status_t *status)
+        status_t *status,
+        audio_port_handle_t portId)
 {
     sp<PlaybackThread::Track> track;
     sp<TrackHandle> trackHandle;
@@ -640,7 +641,8 @@
         ALOGV("createTrack() lSessionId: %d", lSessionId);
 
         track = thread->createTrack_l(client, streamType, sampleRate, format,
-                channelMask, frameCount, sharedBuffer, lSessionId, flags, tid, clientUid, &lStatus);
+                channelMask, frameCount, sharedBuffer, lSessionId, flags, tid,
+                clientUid, &lStatus, portId);
         LOG_ALWAYS_FATAL_IF((lStatus == NO_ERROR) && (track == 0));
         // we don't abort yet if lStatus != NO_ERROR; there is still work to be done regardless
 
@@ -1445,7 +1447,8 @@
         size_t *notificationFrames,
         sp<IMemory>& cblk,
         sp<IMemory>& buffers,
-        status_t *status)
+        status_t *status,
+        audio_port_handle_t portId)
 {
     sp<RecordThread::RecordTrack> recordTrack;
     sp<RecordHandle> recordHandle;
@@ -1529,7 +1532,7 @@
 
         recordTrack = thread->createRecordTrack_l(client, sampleRate, format, channelMask,
                                                   frameCount, lSessionId, notificationFrames,
-                                                  clientUid, flags, tid, &lStatus);
+                                                  clientUid, flags, tid, &lStatus, portId);
         LOG_ALWAYS_FATAL_IF((lStatus == NO_ERROR) && (recordTrack == 0));
 
         if (lStatus == NO_ERROR) {
diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
index 71d6b92..08d94c4 100644
--- a/services/audioflinger/AudioFlinger.h
+++ b/services/audioflinger/AudioFlinger.h
@@ -115,7 +115,8 @@
                                 pid_t tid,
                                 audio_session_t *sessionId,
                                 int clientUid,
-                                status_t *status /*non-NULL*/);
+                                status_t *status /*non-NULL*/,
+                                audio_port_handle_t portId);
 
     virtual sp<IAudioRecord> openRecord(
                                 audio_io_handle_t input,
@@ -132,7 +133,8 @@
                                 size_t *notificationFrames,
                                 sp<IMemory>& cblk,
                                 sp<IMemory>& buffers,
-                                status_t *status /*non-NULL*/);
+                                status_t *status /*non-NULL*/,
+                                audio_port_handle_t portId);
 
     virtual     uint32_t    sampleRate(audio_io_handle_t ioHandle) const;
     virtual     audio_format_t format(audio_io_handle_t output) const;
diff --git a/services/audioflinger/PlaybackTracks.h b/services/audioflinger/PlaybackTracks.h
index 0bcb9a0..27e4627 100644
--- a/services/audioflinger/PlaybackTracks.h
+++ b/services/audioflinger/PlaybackTracks.h
@@ -34,7 +34,8 @@
                                 audio_session_t sessionId,
                                 uid_t uid,
                                 audio_output_flags_t flags,
-                                track_type type);
+                                track_type type,
+                                audio_port_handle_t portId = AUDIO_PORT_HANDLE_NONE);
     virtual             ~Track();
     virtual status_t    initCheck() const;
 
diff --git a/services/audioflinger/RecordTracks.h b/services/audioflinger/RecordTracks.h
index 883ff6b..848e531 100644
--- a/services/audioflinger/RecordTracks.h
+++ b/services/audioflinger/RecordTracks.h
@@ -32,7 +32,8 @@
                                 audio_session_t sessionId,
                                 uid_t uid,
                                 audio_input_flags_t flags,
-                                track_type type);
+                                track_type type,
+                                audio_port_handle_t portId = AUDIO_PORT_HANDLE_NONE);
     virtual             ~RecordTrack();
     virtual status_t    initCheck() const;
 
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 9966eeb..85d2335 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -1754,7 +1754,8 @@
         audio_output_flags_t *flags,
         pid_t tid,
         uid_t uid,
-        status_t *status)
+        status_t *status,
+        audio_port_handle_t portId)
 {
     size_t frameCount = *pFrameCount;
     sp<Track> track;
@@ -1936,7 +1937,7 @@
 
         track = new Track(this, client, streamType, sampleRate, format,
                           channelMask, frameCount, NULL, sharedBuffer,
-                          sessionId, uid, *flags, TrackBase::TYPE_DEFAULT);
+                          sessionId, uid, *flags, TrackBase::TYPE_DEFAULT, portId);
 
         lStatus = track != 0 ? track->initCheck() : (status_t) NO_MEMORY;
         if (lStatus != NO_ERROR) {
@@ -6451,7 +6452,8 @@
         uid_t uid,
         audio_input_flags_t *flags,
         pid_t tid,
-        status_t *status)
+        status_t *status,
+        audio_port_handle_t portId)
 {
     size_t frameCount = *pFrameCount;
     sp<RecordTrack> track;
@@ -6559,7 +6561,7 @@
 
         track = new RecordTrack(this, client, sampleRate,
                       format, channelMask, frameCount, NULL, sessionId, uid,
-                      *flags, TrackBase::TYPE_DEFAULT);
+                      *flags, TrackBase::TYPE_DEFAULT, portId);
 
         lStatus = track->initCheck();
         if (lStatus != NO_ERROR) {
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index d261ea5..4eafc38 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -591,7 +591,8 @@
                                 audio_output_flags_t *flags,
                                 pid_t tid,
                                 uid_t uid,
-                                status_t *status /*non-NULL*/);
+                                status_t *status /*non-NULL*/,
+                                audio_port_handle_t portId);
 
                 AudioStreamOut* getOutput() const;
                 AudioStreamOut* clearOutput();
@@ -1363,7 +1364,8 @@
                     uid_t uid,
                     audio_input_flags_t *flags,
                     pid_t tid,
-                    status_t *status /*non-NULL*/);
+                    status_t *status /*non-NULL*/,
+                    audio_port_handle_t portId);
 
             status_t    start(RecordTrack* recordTrack,
                               AudioSystem::sync_event_t event,
diff --git a/services/audioflinger/TrackBase.h b/services/audioflinger/TrackBase.h
index 4fcb596..9ca2d63 100644
--- a/services/audioflinger/TrackBase.h
+++ b/services/audioflinger/TrackBase.h
@@ -65,7 +65,8 @@
                                 uid_t uid,
                                 bool isOut,
                                 alloc_type alloc = ALLOC_CBLK,
-                                track_type type = TYPE_DEFAULT);
+                                track_type type = TYPE_DEFAULT,
+                                audio_port_handle_t portId = AUDIO_PORT_HANDLE_NONE);
     virtual             ~TrackBase();
     virtual status_t    initCheck() const;
 
@@ -163,6 +164,7 @@
     bool                mTerminated;
     track_type          mType;      // must be one of TYPE_DEFAULT, TYPE_OUTPUT, TYPE_PATCH ...
     audio_io_handle_t   mThreadIoHandle; // I/O handle of the thread the track is attached to
+    audio_port_handle_t mPortId; // unique ID for this track used by audio policy
 };
 
 // PatchProxyBufferProvider interface is implemented by PatchTrack and PatchRecord.
diff --git a/services/audioflinger/Tracks.cpp b/services/audioflinger/Tracks.cpp
index e8e27e4..9746075 100644
--- a/services/audioflinger/Tracks.cpp
+++ b/services/audioflinger/Tracks.cpp
@@ -75,7 +75,8 @@
             uid_t clientUid,
             bool isOut,
             alloc_type alloc,
-            track_type type)
+            track_type type,
+            audio_port_handle_t portId)
     :   RefBase(),
         mThread(thread),
         mClient(client),
@@ -96,7 +97,8 @@
         mId(android_atomic_inc(&nextTrackId)),
         mTerminated(false),
         mType(type),
-        mThreadIoHandle(thread->id())
+        mThreadIoHandle(thread->id()),
+        mPortId(portId)
 {
     const uid_t callingUid = IPCThreadState::self()->getCallingUid();
     if (!isTrustedCallingUid(callingUid) || clientUid == AUDIO_UID_INVALID) {
@@ -343,12 +345,13 @@
             audio_session_t sessionId,
             uid_t uid,
             audio_output_flags_t flags,
-            track_type type)
+            track_type type,
+            audio_port_handle_t portId)
     :   TrackBase(thread, client, sampleRate, format, channelMask, frameCount,
                   (sharedBuffer != 0) ? sharedBuffer->pointer() : buffer,
                   sessionId, uid, true /*isOut*/,
                   (type == TYPE_PATCH) ? ( buffer == NULL ? ALLOC_LOCAL : ALLOC_NONE) : ALLOC_CBLK,
-                  type),
+                  type, portId),
     mFillingUpStatus(FS_INVALID),
     // mRetryCount initialized later when needed
     mSharedBuffer(sharedBuffer),
@@ -1477,13 +1480,14 @@
             audio_session_t sessionId,
             uid_t uid,
             audio_input_flags_t flags,
-            track_type type)
+            track_type type,
+            audio_port_handle_t portId)
     :   TrackBase(thread, client, sampleRate, format,
                   channelMask, frameCount, buffer, sessionId, uid, false /*isOut*/,
                   (type == TYPE_DEFAULT) ?
                           ((flags & AUDIO_INPUT_FLAG_FAST) ? ALLOC_PIPE : ALLOC_CBLK) :
                           ((buffer == NULL) ? ALLOC_LOCAL : ALLOC_NONE),
-                  type),
+                  type, portId),
         mOverflow(false),
         mFramesToDrop(0),
         mResamplerBufferProvider(NULL), // initialize in case of early constructor exit
diff --git a/services/audiopolicy/AudioPolicyInterface.h b/services/audiopolicy/AudioPolicyInterface.h
index c60b49a..ff9e44c 100644
--- a/services/audiopolicy/AudioPolicyInterface.h
+++ b/services/audiopolicy/AudioPolicyInterface.h
@@ -116,12 +116,10 @@
                                         audio_session_t session,
                                         audio_stream_type_t *stream,
                                         uid_t uid,
-                                        uint32_t samplingRate,
-                                        audio_format_t format,
-                                        audio_channel_mask_t channelMask,
+                                        const audio_config_t *config,
                                         audio_output_flags_t flags,
                                         int selectedDeviceId,
-                                        const audio_offload_info_t *offloadInfo) = 0;
+                                        audio_port_handle_t *portId) = 0;
     // indicates to the audio policy manager that the output starts being used by corresponding stream.
     virtual status_t startOutput(audio_io_handle_t output,
                                  audio_stream_type_t stream,
@@ -140,12 +138,11 @@
                                      audio_io_handle_t *input,
                                      audio_session_t session,
                                      uid_t uid,
-                                     uint32_t samplingRate,
-                                     audio_format_t format,
-                                     audio_channel_mask_t channelMask,
+                                     const audio_config_base_t *config,
                                      audio_input_flags_t flags,
                                      audio_port_handle_t selectedDeviceId,
-                                     input_type_t *inputType) = 0;
+                                     input_type_t *inputType,
+                                     audio_port_handle_t *portId) = 0;
     // indicates to the audio policy manager that the input starts being used.
     virtual status_t startInput(audio_io_handle_t input,
                                 audio_session_t session,
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index 8cd11f5..2f25020 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -718,12 +718,10 @@
                                               audio_session_t session,
                                               audio_stream_type_t *stream,
                                               uid_t uid,
-                                              uint32_t samplingRate,
-                                              audio_format_t format,
-                                              audio_channel_mask_t channelMask,
+                                              const audio_config_t *config,
                                               audio_output_flags_t flags,
                                               audio_port_handle_t selectedDeviceId,
-                                              const audio_offload_info_t *offloadInfo)
+                                              audio_port_handle_t *portId)
 {
     audio_attributes_t attributes;
     if (attr != NULL) {
@@ -741,10 +739,16 @@
         }
         stream_type_to_audio_attributes(*stream, &attributes);
     }
+
+    // TODO: check for existing client for this port ID
+    if (*portId == AUDIO_PORT_HANDLE_NONE) {
+        *portId = AudioPort::getNextUniqueId();
+    }
+
     sp<SwAudioOutputDescriptor> desc;
     if (mPolicyMixes.getOutputForAttr(attributes, uid, desc) == NO_ERROR) {
         ALOG_ASSERT(desc != 0, "Invalid desc returned by getOutputForAttr");
-        if (!audio_has_proportional_frames(format)) {
+        if (!audio_has_proportional_frames(config->format)) {
             return BAD_VALUE;
         }
         *stream = streamTypefromAttributesInt(&attributes);
@@ -782,11 +786,11 @@
     }
 
     ALOGV("getOutputForAttr() device 0x%x, samplingRate %d, format %x, channelMask %x, flags %x",
-          device, samplingRate, format, channelMask, flags);
+          device, config->sample_rate, config->format, config->channel_mask, flags);
 
     *output = getOutputForDevice(device, session, *stream,
-                                 samplingRate, format, channelMask,
-                                 flags, offloadInfo);
+                                 config->sample_rate, config->format, config->channel_mask,
+                                 flags, &config->offload_info);
     if (*output == AUDIO_IO_HANDLE_NONE) {
         mOutputRoutes.removeRoute(session);
         return INVALID_OPERATION;
@@ -1411,16 +1415,15 @@
                                              audio_io_handle_t *input,
                                              audio_session_t session,
                                              uid_t uid,
-                                             uint32_t samplingRate,
-                                             audio_format_t format,
-                                             audio_channel_mask_t channelMask,
+                                             const audio_config_base_t *config,
                                              audio_input_flags_t flags,
                                              audio_port_handle_t selectedDeviceId,
-                                             input_type_t *inputType)
+                                             input_type_t *inputType,
+                                             audio_port_handle_t *portId)
 {
     ALOGV("getInputForAttr() source %d, samplingRate %d, format %d, channelMask %x,"
             "session %d, flags %#x",
-          attr->source, samplingRate, format, channelMask, session, flags);
+          attr->source, config->sample_rate, config->format, config->channel_mask, session, flags);
 
     *input = AUDIO_IO_HANDLE_NONE;
     *inputType = API_INPUT_INVALID;
@@ -1437,6 +1440,11 @@
     }
     halInputSource = inputSource;
 
+    // TODO: check for existing client for this port ID
+    if (*portId == AUDIO_PORT_HANDLE_NONE) {
+        *portId = AudioPort::getNextUniqueId();
+    }
+
     // Explicit routing?
     sp<DeviceDescriptor> deviceDesc;
     for (size_t i = 0; i < mAvailableInputDevices.size(); i++) {
@@ -1486,12 +1494,13 @@
     }
 
     *input = getInputForDevice(device, address, session, uid, inputSource,
-                               samplingRate, format, channelMask, flags,
+                               config->sample_rate, config->format, config->channel_mask, flags,
                                policyMix);
     if (*input == AUDIO_IO_HANDLE_NONE) {
         mInputRoutes.removeRoute(session);
         return INVALID_OPERATION;
     }
+
     ALOGV("getInputForAttr() returns input type = %d", *inputType);
     return NO_ERROR;
 }
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.h b/services/audiopolicy/managerdefault/AudioPolicyManager.h
index 52fa082..f440c37 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.h
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.h
@@ -111,12 +111,10 @@
                                           audio_session_t session,
                                           audio_stream_type_t *stream,
                                           uid_t uid,
-                                          uint32_t samplingRate,
-                                          audio_format_t format,
-                                          audio_channel_mask_t channelMask,
+                                          const audio_config_t *config,
                                           audio_output_flags_t flags,
                                           audio_port_handle_t selectedDeviceId,
-                                          const audio_offload_info_t *offloadInfo);
+                                          audio_port_handle_t *portId);
         virtual status_t startOutput(audio_io_handle_t output,
                                      audio_stream_type_t stream,
                                      audio_session_t session);
@@ -130,12 +128,11 @@
                                          audio_io_handle_t *input,
                                          audio_session_t session,
                                          uid_t uid,
-                                         uint32_t samplingRate,
-                                         audio_format_t format,
-                                         audio_channel_mask_t channelMask,
+                                         const audio_config_base_t *config,
                                          audio_input_flags_t flags,
                                          audio_port_handle_t selectedDeviceId,
-                                         input_type_t *inputType);
+                                         input_type_t *inputType,
+                                         audio_port_handle_t *portId);
 
         // indicates to the audio policy manager that the input starts being used.
         virtual status_t startInput(audio_io_handle_t input,
diff --git a/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp b/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
index 0c23080..be86cfa 100644
--- a/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
+++ b/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
@@ -151,12 +151,10 @@
                                               audio_session_t session,
                                               audio_stream_type_t *stream,
                                               uid_t uid,
-                                              uint32_t samplingRate,
-                                              audio_format_t format,
-                                              audio_channel_mask_t channelMask,
+                                              const audio_config_t *config,
                                               audio_output_flags_t flags,
                                               audio_port_handle_t selectedDeviceId,
-                                              const audio_offload_info_t *offloadInfo)
+                                              audio_port_handle_t *portId)
 {
     if (mAudioPolicyManager == NULL) {
         return NO_INIT;
@@ -170,8 +168,9 @@
                 "%s uid %d tried to pass itself off as %d", __FUNCTION__, callingUid, uid);
         uid = callingUid;
     }
-    return mAudioPolicyManager->getOutputForAttr(attr, output, session, stream, uid, samplingRate,
-                                    format, channelMask, flags, selectedDeviceId, offloadInfo);
+    return mAudioPolicyManager->getOutputForAttr(attr, output, session, stream, uid,
+                                                 config,
+                                                 flags, selectedDeviceId, portId);
 }
 
 status_t AudioPolicyService::startOutput(audio_io_handle_t output,
@@ -262,11 +261,10 @@
                                              audio_session_t session,
                                              pid_t pid,
                                              uid_t uid,
-                                             uint32_t samplingRate,
-                                             audio_format_t format,
-                                             audio_channel_mask_t channelMask,
+                                             const audio_config_base_t *config,
                                              audio_input_flags_t flags,
-                                             audio_port_handle_t selectedDeviceId)
+                                             audio_port_handle_t selectedDeviceId,
+                                             audio_port_handle_t *portId)
 {
     if (mAudioPolicyManager == NULL) {
         return NO_INIT;
@@ -305,9 +303,9 @@
         Mutex::Autolock _l(mLock);
         // the audio_in_acoustics_t parameter is ignored by get_input()
         status = mAudioPolicyManager->getInputForAttr(attr, input, session, uid,
-                                                     samplingRate, format, channelMask,
+                                                     config,
                                                      flags, selectedDeviceId,
-                                                     &inputType);
+                                                     &inputType, portId);
         audioPolicyEffects = mAudioPolicyEffects;
 
         if (status == NO_ERROR) {
diff --git a/services/audiopolicy/service/AudioPolicyService.h b/services/audiopolicy/service/AudioPolicyService.h
index 8eb4f2d..d800743 100644
--- a/services/audiopolicy/service/AudioPolicyService.h
+++ b/services/audiopolicy/service/AudioPolicyService.h
@@ -77,12 +77,10 @@
                                       audio_session_t session,
                                       audio_stream_type_t *stream,
                                       uid_t uid,
-                                      uint32_t samplingRate = 0,
-                                      audio_format_t format = AUDIO_FORMAT_DEFAULT,
-                                      audio_channel_mask_t channelMask = 0,
-                                      audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE,
-                                      audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE,
-                                      const audio_offload_info_t *offloadInfo = NULL);
+                                      const audio_config_t *config,
+                                      audio_output_flags_t flags,
+                                      audio_port_handle_t selectedDeviceId,
+                                      audio_port_handle_t *portId);
     virtual status_t startOutput(audio_io_handle_t output,
                                  audio_stream_type_t stream,
                                  audio_session_t session);
@@ -97,11 +95,10 @@
                                      audio_session_t session,
                                      pid_t pid,
                                      uid_t uid,
-                                     uint32_t samplingRate,
-                                     audio_format_t format,
-                                     audio_channel_mask_t channelMask,
+                                     const audio_config_base_t *config,
                                      audio_input_flags_t flags,
-                                     audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE);
+                                     audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE,
+                                     audio_port_handle_t *portId = NULL);
     virtual status_t startInput(audio_io_handle_t input,
                                 audio_session_t session);
     virtual status_t stopInput(audio_io_handle_t input,