diff options
Diffstat (limited to 'include/media/AudioTrack.h')
| -rw-r--r-- | include/media/AudioTrack.h | 45 |
1 files changed, 41 insertions, 4 deletions
diff --git a/include/media/AudioTrack.h b/include/media/AudioTrack.h index cc4ab74..c46df1e 100644 --- a/include/media/AudioTrack.h +++ b/include/media/AudioTrack.h @@ -138,7 +138,8 @@ public: uint32_t flags = 0, callback_t cbf = 0, void* user = 0, - int notificationFrames = 0); + int notificationFrames = 0, + int sessionId = 0); /* Creates an audio track and registers it with AudioFlinger. With this constructor, * The PCM data to be rendered by AudioTrack is passed in a shared memory buffer @@ -157,7 +158,8 @@ public: uint32_t flags = 0, callback_t cbf = 0, void* user = 0, - int notificationFrames = 0); + int notificationFrames = 0, + int sessionId = 0); /* Terminates the AudioTrack and unregisters it from AudioFlinger. * Also destroys all resources assotiated with the AudioTrack. @@ -182,7 +184,8 @@ public: void* user = 0, int notificationFrames = 0, const sp<IMemory>& sharedBuffer = 0, - bool threadCanCallJava = false); + bool threadCanCallJava = false, + int sessionId = 0); /* Result of constructing the AudioTrack. This must be checked @@ -239,10 +242,17 @@ public: /* set volume for this track, mostly used for games' sound effects + * left and right volumes. Levels must be <= 1.0. */ - void setVolume(float left, float right); + status_t setVolume(float left, float right); void getVolume(float* left, float* right); + /* set the send level for this track. An auxiliary effect should be attached + * to the track with attachEffect(). Level must be <= 1.0. + */ + status_t setSendLevel(float level); + void getSendLevel(float* level); + /* set sample rate for this track, mostly used for games' sound effects */ status_t setSampleRate(int sampleRate); @@ -340,6 +350,31 @@ public: */ audio_io_handle_t getOutput(); + /* returns the unique ID associated to this track. + * + * Parameters: + * none. + * + * Returned value: + * AudioTrack ID. + */ + int getSessionId(); + + + /* Attach track auxiliary output to specified effect. Used effectId = 0 + * to detach track from effect. + * + * Parameters: + * + * effectId: effectId obtained from AudioEffect::id(). + * + * Returned status (from utils/Errors.h) can be: + * - NO_ERROR: successful operation + * - INVALID_OPERATION: the effect is not an auxiliary effect. + * - BAD_VALUE: The specified effect ID is invalid + */ + status_t attachAuxEffect(int effectId); + /* obtains a buffer of "frameCount" frames. The buffer must be * filled entirely. If the track is stopped, obtainBuffer() returns * STOPPED instead of NO_ERROR as long as there are buffers availlable, @@ -406,6 +441,7 @@ private: sp<AudioTrackThread> mAudioTrackThread; float mVolume[2]; + float mSendLevel; uint32_t mFrameCount; audio_track_cblk_t* mCblk; @@ -431,6 +467,7 @@ private: uint32_t mNewPosition; uint32_t mUpdatePeriod; uint32_t mFlags; + int mSessionId; }; |