Add initial stereo capture support for AAC encoder (36663b2f) · Commits · e / os / android_frameworks_base

media/libstagefright/codecs/aacenc/AACEncoder.cpp

+29 −13

Original line number	Diff line number	Diff line
		@@ -36,6 +36,7 @@ AACEncoder::AACEncoder(const sp<MediaSource> &source, const sp<MetaData> &meta)
		mStarted(false),
		mBufferGroup(NULL),
		mInputBuffer(NULL),
		mInputFrame(NULL),
		mEncoderHandle(NULL),
		mApiHandle(NULL),
		mMemOperator(NULL) {
		@@ -45,6 +46,7 @@ status_t AACEncoder::initCheck() {
		CHECK(mApiHandle == NULL && mEncoderHandle == NULL);
		CHECK(mMeta->findInt32(kKeySampleRate, &mSampleRate));
		CHECK(mMeta->findInt32(kKeyChannelCount, &mChannels));
		CHECK(mChannels <= 2 && mChannels >= 1);
		CHECK(mMeta->findInt32(kKeyBitRate, &mBitRate));

		mApiHandle = new VO_AUDIO_CODECAPI;
		@@ -145,6 +147,10 @@ status_t AACEncoder::start(MetaData *params) {
		mNumInputSamples = 0;
		mAnchorTimeUs = 0;
		mFrameCount = 0;

		mInputFrame = new int16_t[mChannels * kNumSamplesPerFrame];
		CHECK(mInputFrame != NULL);

		mSource->start(params);

		mStarted = true;
		@@ -176,6 +182,10 @@ status_t AACEncoder::stop() {
		mApiHandle = NULL;

		mStarted = false;
		if (mInputFrame) {
		delete[] mInputFrame;
		mInputFrame = NULL;
		}

		return OK;
		}
		@@ -222,7 +232,8 @@ status_t AACEncoder::read(
		buffer->meta_data()->setInt32(kKeyIsCodecConfig, false);
		}

		while (mNumInputSamples < kNumSamplesPerFrame) {
		const int32_t nSamples = mChannels * kNumSamplesPerFrame;
		while (mNumInputSamples < nSamples) {
		if (mInputBuffer == NULL) {
		if (mSource->read(&mInputBuffer, options) != OK) {
		if (mNumInputSamples == 0) {
		@@ -231,7 +242,7 @@ status_t AACEncoder::read(
		}
		memset(&mInputFrame[mNumInputSamples],
		0,
		sizeof(int16_t) * (kNumSamplesPerFrame - mNumInputSamples));
		sizeof(int16_t) * (nSamples - mNumInputSamples));
		mNumInputSamples = 0;
		break;
		}
		@@ -250,8 +261,7 @@ status_t AACEncoder::read(
		} else {
		readFromSource = false;
		}
		size_t copy =
		(kNumSamplesPerFrame - mNumInputSamples) * sizeof(int16_t);
		size_t copy = (nSamples - mNumInputSamples) * sizeof(int16_t);

		if (copy > mInputBuffer->range_length()) {
		copy = mInputBuffer->range_length();
		@@ -271,8 +281,8 @@ status_t AACEncoder::read(
		mInputBuffer = NULL;
		}
		mNumInputSamples += copy / sizeof(int16_t);
		if (mNumInputSamples >= kNumSamplesPerFrame) {
		mNumInputSamples %= kNumSamplesPerFrame;
		if (mNumInputSamples >= nSamples) {
		mNumInputSamples %= nSamples;
		break;
		}
		}
		@@ -280,7 +290,7 @@ status_t AACEncoder::read(
		VO_CODECBUFFER inputData;
		memset(&inputData, 0, sizeof(inputData));
		inputData.Buffer = (unsigned char*) mInputFrame;
		inputData.Length = kNumSamplesPerFrame * sizeof(int16_t);
		inputData.Length = nSamples * sizeof(int16_t);
		CHECK(VO_ERR_NONE == mApiHandle->SetInputData(mEncoderHandle,&inputData));

		VO_CODECBUFFER outputData;
		@@ -289,15 +299,21 @@ status_t AACEncoder::read(
		memset(&outputInfo, 0, sizeof(outputInfo));

		VO_U32 ret = VO_ERR_NONE;
		size_t nOutputBytes = 0;
		do {
		outputData.Buffer = outPtr;
		outputData.Length = buffer->size();
		outputData.Length = buffer->size() - nOutputBytes;
		ret = mApiHandle->GetOutputData(mEncoderHandle, &outputData, &outputInfo);
		CHECK(ret == VO_ERR_NONE \|\| ret == VO_ERR_INPUT_BUFFER_SMALL);
		CHECK(outputData.Length != 0);
		buffer->set_range(0, outputData.Length);
		if (ret == VO_ERR_NONE) {
		outPtr += outputData.Length;
		nOutputBytes += outputData.Length;
		}
		} while (ret != VO_ERR_INPUT_BUFFER_SMALL);
		buffer->set_range(0, nOutputBytes);

		int64_t mediaTimeUs =
		((mFrameCount - 1) * 1000000LL * kNumSamplesPerFrame) / mSampleRate;

		buffer->meta_data()->setInt64(kKeyTime, mAnchorTimeUs + mediaTimeUs);
		if (readFromSource && wallClockTimeUs != -1) {
		buffer->meta_data()->setInt64(kKeyDriftTime, mediaTimeUs - wallClockTimeUs);

media/libstagefright/include/AACEncoder.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -60,7 +60,7 @@ class AACEncoder: public MediaSource {
		kNumSamplesPerFrame = 1024,
		};

		int16_t mInputFrame[kNumSamplesPerFrame];
		int16_t *mInputFrame;

		uint8_t mAudioSpecificConfigData[2]; // auido specific data
		void *mEncoderHandle;