Configure policy of mediaserver threads (3acbd053) · Commits · e / os / android_frameworks_av

include/media/AudioTrack.h

+13 −1

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		@@ -138,7 +138,7 @@ public:
		* frameCount: Minimum size of track PCM buffer in frames. This defines the
		* latency of the track. The actual size selected by the AudioTrack could be
		* larger if the requested size is not compatible with current audio HAL
		* latency.
		* latency. Zero means to use a default value.
		* flags: See comments on audio_output_flags_t in <system/audio.h>.
		* cbf: Callback function. If not null, this function is called periodically
		* to request new PCM data.
		@@ -460,12 +460,24 @@ protected:
		{
		public:
		AudioTrackThread(AudioTrack& receiver, bool bCanCallJava = false);

		// Do not call Thread::requestExitAndWait() without first calling requestExit().
		// Thread::requestExitAndWait() is not virtual, and the implementation doesn't do enough.
		virtual void requestExit();

		void pause(); // suspend thread from execution at next loop boundary
		void resume(); // allow thread to execute, if not requested to exit

		private:
		friend class AudioTrack;
		virtual bool threadLoop();
		virtual status_t readyToRun();
		virtual void onFirstRef();
		AudioTrack& mReceiver;
		~AudioTrackThread();
		Mutex mMyLock; // Thread::mLock is private
		Condition mMyCond; // Thread::mThreadExitedCondition is private
		bool mPaused; // whether thread is currently paused
		};

		// body of AudioTrackThread::threadLoop()

+1 −0

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		@@ -65,6 +65,7 @@ public:
		track_flags_t flags,
		const sp<IMemory>& sharedBuffer,
		audio_io_handle_t output,
		pid_t tid, // -1 means unused, otherwise must be valid non-0
		int *sessionId,
		status_t *status) = 0;

+2 −3

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		@@ -35,10 +35,9 @@ public:
		DECLARE_META_INTERFACE(AudioRecord);

		/* After it's created the track is not active. Call start() to
		* make it active. If set, the callback will start being called.
		* tid identifies the client callback thread, or 0 if not needed.
		* make it active.
		*/
		virtual status_t start(pid_t tid, int event, int triggerSession) = 0;
		virtual status_t start(int event, int triggerSession) = 0;

		/* Stop a track. If set, the callback will cease being called and
		* obtainBuffer will return an error. Buffers that are already released

+2 −3

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		@@ -39,10 +39,9 @@ public:
		virtual sp<IMemory> getCblk() const = 0;

		/* After it's created the track is not active. Call start() to
		* make it active. If set, the callback will start being called.
		* tid identifies the client callback thread, or 0 if not needed.
		* make it active.
		*/
		virtual status_t start(pid_t tid) = 0;
		virtual status_t start() = 0;

		/* Stop a track. If set, the callback will cease being called and
		* obtainBuffer will return an error. Buffers that are already released

+1 −0

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		@@ -53,6 +53,7 @@ namespace android {
		#define CBLK_RESTORED_MSK 0x0040
		#define CBLK_RESTORED_ON 0x0040 // track has been restored after invalidation
		#define CBLK_RESTORED_OFF 0x0040 // by AudioFlinger
		#define CBLK_FAST 0x0080 // AudioFlinger successfully created a fast track

		// Important: do not add any virtual methods, including ~
		struct audio_track_cblk_t