commit a514bdb58b5de4986679f72b7204b4764f7a2778
author Eric Laurent <elaurent@google.com> Mon Jun 21 09:27:30 2010 -0700
committer Eric Laurent <elaurent@google.com> Tue Jun 22 17:14:04 2010 -0700
tree 84b1ebf0c2b500bfb4995e373f8fee5b63b6c9fd
parent 58ae9c530247668f8af36e30d228c716c226b3d4

Added support for audio sessions in MediaPlayer and AudioTrack.

Audio sessions are used to associate audio effects to particular instances (or groups) of MediaPlayers or AudioTracks.

Change-Id: Ib94eec43241cfcb416590f435ddce7ab39a07640

media/libmediaplayerservice/MediaPlayerService.h

diff --git a/media/libmediaplayerservice/MediaPlayerService.h b/media/libmediaplayerservice/MediaPlayerService.h
index 2408c62..60b91c6 100644
--- a/media/libmediaplayerservice/MediaPlayerService.h
+++ b/media/libmediaplayerservice/MediaPlayerService.h
@@ -65,7 +65,7 @@
     class AudioOutput : public MediaPlayerBase::AudioSink
     {
     public:
-                                AudioOutput();
+                                AudioOutput(int sessionId);
         virtual                 ~AudioOutput();
 
         virtual bool            ready() const { return mTrack != NULL; }
@@ -108,6 +108,7 @@
         float                   mRightVolume;
         float                   mMsecsPerFrame;
         uint32_t                mLatency;
+        int                     mSessionId;
 
         static bool             mIsOnEmulator;
         static int              mMinBufferCount;  // 12 for emulator; otherwise 4
@@ -185,9 +186,9 @@
     // House keeping for media player clients
     virtual sp<IMediaPlayer>    create(
             pid_t pid, const sp<IMediaPlayerClient>& client, const char* url,
-            const KeyedVector<String8, String8> *headers);
+            const KeyedVector<String8, String8> *headers, int audioSessionId);
 
-    virtual sp<IMediaPlayer>    create(pid_t pid, const sp<IMediaPlayerClient>& client, int fd, int64_t offset, int64_t length);
+    virtual sp<IMediaPlayer>    create(pid_t pid, const sp<IMediaPlayerClient>& client, int fd, int64_t offset, int64_t length, int audioSessionId);
     virtual sp<IMemory>         decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat);
     virtual sp<IMemory>         decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat);
     virtual sp<IMemory>         snoop();
@@ -237,12 +238,15 @@
                 pid_t           pid() const { return mPid; }
         virtual status_t        dump(int fd, const Vector<String16>& args) const;
 
+                int             getAudioSessionId() { return mAudioSessionId; }
+
     private:
         friend class MediaPlayerService;
                                 Client( const sp<MediaPlayerService>& service,
                                         pid_t pid,
                                         int32_t connId,
-                                        const sp<IMediaPlayerClient>& client);
+                                        const sp<IMediaPlayerClient>& client,
+                                        int audioSessionId);
                                 Client();
         virtual                 ~Client();
 
@@ -271,6 +275,7 @@
                     status_t                    mStatus;
                     bool                        mLoop;
                     int32_t                     mConnId;
+                    int                         mAudioSessionId;
 
         // Metadata filters.
         media::Metadata::Filter mMetadataAllow;  // protected by mLock