am 7a9b2594: Merge "Remove unused TwoTrack process mode from AudioMixer" into lmp-dev (043bdaaf) · Commits · e / os / android_frameworks_av

services/audioflinger/AudioMixer.cpp

+0 −103

Original line number	Diff line number	Diff line
		@@ -1797,109 +1797,6 @@ void AudioMixer::process__OneTrack16BitsStereoNoResampling(state_t* state,
		}
		}

		#if 0
		// 2 tracks is also a common case
		// NEVER used in current implementation of process__validate()
		// only use if the 2 tracks have the same output buffer
		void AudioMixer::process__TwoTracks16BitsStereoNoResampling(state_t* state,
		int64_t pts)
		{
		int i;
		uint32_t en = state->enabledTracks;

		i = 31 - __builtin_clz(en);
		const track_t& t0 = state->tracks[i];
		AudioBufferProvider::Buffer& b0(t0.buffer);

		en &= ~(1<<i);
		i = 31 - __builtin_clz(en);
		const track_t& t1 = state->tracks[i];
		AudioBufferProvider::Buffer& b1(t1.buffer);

		const int16_t *in0;
		const int16_t vl0 = t0.volume[0];
		const int16_t vr0 = t0.volume[1];
		size_t frameCount0 = 0;

		const int16_t *in1;
		const int16_t vl1 = t1.volume[0];
		const int16_t vr1 = t1.volume[1];
		size_t frameCount1 = 0;

		//FIXME: only works if two tracks use same buffer
		int32_t* out = t0.mainBuffer;
		size_t numFrames = state->frameCount;
		const int16_t *buff = NULL;


		while (numFrames) {

		if (frameCount0 == 0) {
		b0.frameCount = numFrames;
		int64_t outputPTS = calculateOutputPTS(t0, pts,
		out - t0.mainBuffer);
		t0.bufferProvider->getNextBuffer(&b0, outputPTS);
		if (b0.i16 == NULL) {
		if (buff == NULL) {
		buff = new int16_t[MAX_NUM_CHANNELS * state->frameCount];
		}
		in0 = buff;
		b0.frameCount = numFrames;
		} else {
		in0 = b0.i16;
		}
		frameCount0 = b0.frameCount;
		}
		if (frameCount1 == 0) {
		b1.frameCount = numFrames;
		int64_t outputPTS = calculateOutputPTS(t1, pts,
		out - t0.mainBuffer);
		t1.bufferProvider->getNextBuffer(&b1, outputPTS);
		if (b1.i16 == NULL) {
		if (buff == NULL) {
		buff = new int16_t[MAX_NUM_CHANNELS * state->frameCount];
		}
		in1 = buff;
		b1.frameCount = numFrames;
		} else {
		in1 = b1.i16;
		}
		frameCount1 = b1.frameCount;
		}

		size_t outFrames = frameCount0 < frameCount1?frameCount0:frameCount1;

		numFrames -= outFrames;
		frameCount0 -= outFrames;
		frameCount1 -= outFrames;

		do {
		int32_t l0 = *in0++;
		int32_t r0 = *in0++;
		l0 = mul(l0, vl0);
		r0 = mul(r0, vr0);
		int32_t l = *in1++;
		int32_t r = *in1++;
		l = mulAdd(l, vl1, l0) >> 12;
		r = mulAdd(r, vr1, r0) >> 12;
		// clamping...
		l = clamp16(l);
		r = clamp16(r);
		*out++ = (r<<16) \| (l & 0xFFFF);
		} while (--outFrames);

		if (frameCount0 == 0) {
		t0.bufferProvider->releaseBuffer(&b0);
		}
		if (frameCount1 == 0) {
		t1.bufferProvider->releaseBuffer(&b1);
		}
		}

		delete [] buff;
		}
		#endif

		int64_t AudioMixer::calculateOutputPTS(const track_t& t, int64_t basePTS,
		int outputFrameIndex)
		{

services/audioflinger/AudioMixer.h

+0 −4

Original line number	Diff line number	Diff line
		@@ -408,10 +408,6 @@ private:
		static void process__genericResampling(state_t* state, int64_t pts);
		static void process__OneTrack16BitsStereoNoResampling(state_t* state,
		int64_t pts);
		#if 0
		static void process__TwoTracks16BitsStereoNoResampling(state_t* state,
		int64_t pts);
		#endif

		static int64_t calculateOutputPTS(const track_t& t, int64_t basePTS,
		int outputFrameIndex);