am 28ed2f93: Reduce underruns in screen off, esp. with EQ (ea5008d8) · Commits · e / os / android_frameworks_av

include/media/AudioParameter.h

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -40,12 +40,14 @@ public:
	// keyFrameCount: to change audio output frame count, value is an int		// keyFrameCount: to change audio output frame count, value is an int
	// keyInputSource: to change audio input source, value is an int in audio_source_t		// keyInputSource: to change audio input source, value is an int in audio_source_t
	// (defined in media/mediarecorder.h)		// (defined in media/mediarecorder.h)
			// keyScreenState: either "on" or "off"
	static const char * const keyRouting;		static const char * const keyRouting;
	static const char * const keySamplingRate;		static const char * const keySamplingRate;
	static const char * const keyFormat;		static const char * const keyFormat;
	static const char * const keyChannels;		static const char * const keyChannels;
	static const char * const keyFrameCount;		static const char * const keyFrameCount;
	static const char * const keyInputSource;		static const char * const keyInputSource;
			static const char * const keyScreenState;

	String8 toString();		String8 toString();

media/libmedia/AudioParameter.cpp

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -31,6 +31,7 @@ const char * const AudioParameter::keyFormat = AUDIO_PARAMETER_STREAM_FORMAT;
	const char * const AudioParameter::keyChannels = AUDIO_PARAMETER_STREAM_CHANNELS;		const char * const AudioParameter::keyChannels = AUDIO_PARAMETER_STREAM_CHANNELS;
	const char * const AudioParameter::keyFrameCount = AUDIO_PARAMETER_STREAM_FRAME_COUNT;		const char * const AudioParameter::keyFrameCount = AUDIO_PARAMETER_STREAM_FRAME_COUNT;
	const char * const AudioParameter::keyInputSource = AUDIO_PARAMETER_STREAM_INPUT_SOURCE;		const char * const AudioParameter::keyInputSource = AUDIO_PARAMETER_STREAM_INPUT_SOURCE;
			const char * const AudioParameter::keyScreenState = AUDIO_PARAMETER_KEY_SCREEN_STATE;

	AudioParameter::AudioParameter(const String8& keyValuePairs)		AudioParameter::AudioParameter(const String8& keyValuePairs)
	{		{

services/audioflinger/Android.mk

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -30,6 +30,9 @@ LOCAL_SRC_FILES := \
	#LOCAL_C_INCLUDES += path/to/libsndfile/src		#LOCAL_C_INCLUDES += path/to/libsndfile/src
	#LOCAL_STATIC_LIBRARIES += libsndfile		#LOCAL_STATIC_LIBRARIES += libsndfile

			# uncomment for systrace
			# LOCAL_CFLAGS += -DATRACE_TAG=ATRACE_TAG_AUDIO

	LOCAL_MODULE := libnbaio		LOCAL_MODULE := libnbaio

	include $(BUILD_STATIC_LIBRARY)		include $(BUILD_STATIC_LIBRARY)

services/audioflinger/AudioFlinger.cpp

+23 −0

Original line number	Original line	Diff line number	Diff line
	@@ -164,6 +164,9 @@ static const enum {
	// up large writes into smaller ones, and the wrapper would need to deal with scheduler.		// up large writes into smaller ones, and the wrapper would need to deal with scheduler.
	} kUseFastMixer = FastMixer_Static;		} kUseFastMixer = FastMixer_Static;

			static uint32_t gScreenState; // incremented by 2 when screen state changes, bit 0 == 1 means "off"
			// AudioFlinger::setParameters() updates, other threads read w/o lock

	// ----------------------------------------------------------------------------		// ----------------------------------------------------------------------------

	#ifdef ADD_BATTERY_DATA		#ifdef ADD_BATTERY_DATA
	@@ -889,6 +892,13 @@ status_t AudioFlinger::setParameters(audio_io_handle_t ioHandle, const String8&
	mBtNrecIsOff = btNrecIsOff;		mBtNrecIsOff = btNrecIsOff;
	}		}
	}		}
			String8 screenState;
			if (param.get(String8(AudioParameter::keyScreenState), screenState) == NO_ERROR) {
			bool isOff = screenState == "off";
			if (isOff != (gScreenState & 1)) {
			gScreenState = ((gScreenState & ~1) + 2) \| isOff;
			}
			}
	return final_result;		return final_result;
	}		}

	@@ -1501,6 +1511,7 @@ AudioFlinger::PlaybackThread::PlaybackThread(const sp<AudioFlinger>& audioFlinge
	mMixerStatus(MIXER_IDLE),		mMixerStatus(MIXER_IDLE),
	mMixerStatusIgnoringFastTracks(MIXER_IDLE),		mMixerStatusIgnoringFastTracks(MIXER_IDLE),
	standbyDelay(AudioFlinger::mStandbyTimeInNsecs),		standbyDelay(AudioFlinger::mStandbyTimeInNsecs),
			mScreenState(gScreenState),
	// index 0 is reserved for normal mixer's submix		// index 0 is reserved for normal mixer's submix
	mFastTrackAvailMask(((1 << FastMixerState::kMaxFastTracks) - 1) & ~1)		mFastTrackAvailMask(((1 << FastMixerState::kMaxFastTracks) - 1) & ~1)
	{		{
	@@ -2224,6 +2235,8 @@ AudioFlinger::MixerThread::MixerThread(const sp<AudioFlinger>& audioFlinger, Aud
	size_t numCounterOffers = 0;		size_t numCounterOffers = 0;
	ssize_t index = monoPipe->negotiate(offers, 1, NULL, numCounterOffers);		ssize_t index = monoPipe->negotiate(offers, 1, NULL, numCounterOffers);
	ALOG_ASSERT(index == 0);		ALOG_ASSERT(index == 0);
			monoPipe->setAvgFrames((mScreenState & 1) ?
			(monoPipe->maxFrames() * 7) / 8 : mNormalFrameCount * 2);
	mPipeSink = monoPipe;		mPipeSink = monoPipe;

	#ifdef TEE_SINK_FRAMES		#ifdef TEE_SINK_FRAMES
	@@ -2686,6 +2699,16 @@ void AudioFlinger::PlaybackThread::threadLoop_write()
	#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER)		#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER)
	Tracer::traceBegin(ATRACE_TAG, "write");		Tracer::traceBegin(ATRACE_TAG, "write");
	#endif		#endif
			// update the setpoint when gScreenState changes
			uint32_t screenState = gScreenState;
			if (screenState != mScreenState) {
			mScreenState = screenState;
			MonoPipe pipe = (MonoPipe )mPipeSink.get();
			if (pipe != NULL) {
			pipe->setAvgFrames((mScreenState & 1) ?
			(pipe->maxFrames() * 7) / 8 : mNormalFrameCount * 2);
			}
			}
	ssize_t framesWritten = mNormalSink->write(mMixBuffer, count);		ssize_t framesWritten = mNormalSink->write(mMixBuffer, count);
	#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER)		#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER)
	Tracer::traceEnd(ATRACE_TAG);		Tracer::traceEnd(ATRACE_TAG);

services/audioflinger/AudioFlinger.h

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -1119,6 +1119,7 @@ public:
	// For dumpsys		// For dumpsys
	sp<NBAIO_Sink> mTeeSink;		sp<NBAIO_Sink> mTeeSink;
	sp<NBAIO_Source> mTeeSource;		sp<NBAIO_Source> mTeeSource;
			uint32_t mScreenState; // cached copy of gScreenState
	public:		public:
	virtual bool hasFastMixer() const = 0;		virtual bool hasFastMixer() const = 0;
	virtual FastTrackUnderruns getFastTrackUnderruns(size_t fastIndex) const		virtual FastTrackUnderruns getFastTrackUnderruns(size_t fastIndex) const