Support mpeg1,2 audio and mpeg1,2,4 video content extraction from .ts streams. (386d609d) · Commits · e / os / android_frameworks_av

include/media/stagefright/MediaDefs.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -26,6 +26,7 @@ extern const char *MEDIA_MIMETYPE_VIDEO_VPX;
		extern const char *MEDIA_MIMETYPE_VIDEO_AVC;
		extern const char *MEDIA_MIMETYPE_VIDEO_MPEG4;
		extern const char *MEDIA_MIMETYPE_VIDEO_H263;
		extern const char *MEDIA_MIMETYPE_VIDEO_MPEG2;
		extern const char *MEDIA_MIMETYPE_VIDEO_RAW;

		extern const char *MEDIA_MIMETYPE_AUDIO_AMR_NB;

media/libmediaplayerservice/nuplayer/HTTPLiveSource.cpp

+2 −2

Original line number	Diff line number	Diff line
		@@ -77,7 +77,7 @@ void NuPlayer::HTTPLiveSource::start() {

		sp<MetaData> NuPlayer::HTTPLiveSource::getFormat(bool audio) {
		ATSParser::SourceType type =
		audio ? ATSParser::MPEG2ADTS_AUDIO : ATSParser::AVC_VIDEO;
		audio ? ATSParser::AUDIO : ATSParser::VIDEO;

		sp<AnotherPacketSource> source =
		static_cast<AnotherPacketSource *>(mTSParser->getSource(type).get());
		@@ -131,7 +131,7 @@ bool NuPlayer::HTTPLiveSource::feedMoreTSData() {
		status_t NuPlayer::HTTPLiveSource::dequeueAccessUnit(
		bool audio, sp<ABuffer> *accessUnit) {
		ATSParser::SourceType type =
		audio ? ATSParser::MPEG2ADTS_AUDIO : ATSParser::AVC_VIDEO;
		audio ? ATSParser::AUDIO : ATSParser::VIDEO;

		sp<AnotherPacketSource> source =
		static_cast<AnotherPacketSource *>(mTSParser->getSource(type).get());

media/libmediaplayerservice/nuplayer/StreamingSource.cpp

+2 −2

Original line number	Diff line number	Diff line
		@@ -87,7 +87,7 @@ bool NuPlayer::StreamingSource::feedMoreTSData() {

		sp<MetaData> NuPlayer::StreamingSource::getFormat(bool audio) {
		ATSParser::SourceType type =
		audio ? ATSParser::MPEG2ADTS_AUDIO : ATSParser::AVC_VIDEO;
		audio ? ATSParser::AUDIO : ATSParser::VIDEO;

		sp<AnotherPacketSource> source =
		static_cast<AnotherPacketSource *>(mTSParser->getSource(type).get());
		@@ -102,7 +102,7 @@ sp<MetaData> NuPlayer::StreamingSource::getFormat(bool audio) {
		status_t NuPlayer::StreamingSource::dequeueAccessUnit(
		bool audio, sp<ABuffer> *accessUnit) {
		ATSParser::SourceType type =
		audio ? ATSParser::MPEG2ADTS_AUDIO : ATSParser::AVC_VIDEO;
		audio ? ATSParser::AUDIO : ATSParser::VIDEO;

		sp<AnotherPacketSource> source =
		static_cast<AnotherPacketSource *>(mTSParser->getSource(type).get());

media/libstagefright/ACodec.cpp

+8 −1

Original line number	Diff line number	Diff line
		@@ -909,6 +909,8 @@ status_t ACodec::setupVideoDecoder(
		compressionFormat = OMX_VIDEO_CodingMPEG4;
		} else if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_H263, mime)) {
		compressionFormat = OMX_VIDEO_CodingH263;
		} else if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_MPEG2, mime)) {
		compressionFormat = OMX_VIDEO_CodingMPEG2;
		} else {
		TRESPASS();
		}
		@@ -1647,6 +1649,10 @@ void ACodec::UninitializedState::onSetup(
		componentName = "OMX.google.aac.decoder";
		} else if (!strcasecmp(mime.c_str(), MEDIA_MIMETYPE_AUDIO_MPEG)) {
		componentName = "OMX.Nvidia.mp3.decoder";
		} else if (!strcasecmp(mime.c_str(), MEDIA_MIMETYPE_VIDEO_MPEG2)) {
		componentName = "OMX.Nvidia.mpeg2v.decode";
		} else if (!strcasecmp(mime.c_str(), MEDIA_MIMETYPE_VIDEO_MPEG4)) {
		componentName = "OMX.google.mpeg4.decoder";
		} else {
		TRESPASS();
		}
		@@ -1670,7 +1676,8 @@ void ACodec::UninitializedState::onSetup(
		mCodec->configureCodec(mime.c_str(), msg);

		sp<RefBase> obj;
		if (msg->findObject("native-window", &obj)) {
		if (msg->findObject("native-window", &obj)
		&& strncmp("OMX.google.", componentName.c_str(), 11)) {
		sp<NativeWindowWrapper> nativeWindow(
		static_cast<NativeWindowWrapper *>(obj.get()));
		CHECK(nativeWindow != NULL);

media/libstagefright/MP3Extractor.cpp

+7 −157

Original line number	Diff line number	Diff line
		@@ -20,6 +20,7 @@

		#include "include/MP3Extractor.h"

		#include "include/avc_utils.h"
		#include "include/ID3.h"
		#include "include/VBRISeeker.h"
		#include "include/XINGSeeker.h"
		@@ -44,158 +45,6 @@ namespace android {
		// Yes ... there are things that must indeed match...
		static const uint32_t kMask = 0xfffe0c00;

		// static
		bool MP3Extractor::get_mp3_frame_size(
		uint32_t header, size_t *frame_size,
		int out_sampling_rate, int out_channels,
		int out_bitrate, int out_num_samples) {
		*frame_size = 0;

		if (out_sampling_rate) {
		*out_sampling_rate = 0;
		}

		if (out_channels) {
		*out_channels = 0;
		}

		if (out_bitrate) {
		*out_bitrate = 0;
		}

		if (out_num_samples) {
		*out_num_samples = 1152;
		}

		if ((header & 0xffe00000) != 0xffe00000) {
		return false;
		}

		unsigned version = (header >> 19) & 3;

		if (version == 0x01) {
		return false;
		}

		unsigned layer = (header >> 17) & 3;

		if (layer == 0x00) {
		return false;
		}

		unsigned protection = (header >> 16) & 1;

		unsigned bitrate_index = (header >> 12) & 0x0f;

		if (bitrate_index == 0 \|\| bitrate_index == 0x0f) {
		// Disallow "free" bitrate.
		return false;
		}

		unsigned sampling_rate_index = (header >> 10) & 3;

		if (sampling_rate_index == 3) {
		return false;
		}

		static const int kSamplingRateV1[] = { 44100, 48000, 32000 };
		int sampling_rate = kSamplingRateV1[sampling_rate_index];
		if (version == 2 /* V2 */) {
		sampling_rate /= 2;
		} else if (version == 0 /* V2.5 */) {
		sampling_rate /= 4;
		}

		unsigned padding = (header >> 9) & 1;

		if (layer == 3) {
		// layer I

		static const int kBitrateV1[] = {
		32, 64, 96, 128, 160, 192, 224, 256,
		288, 320, 352, 384, 416, 448
		};

		static const int kBitrateV2[] = {
		32, 48, 56, 64, 80, 96, 112, 128,
		144, 160, 176, 192, 224, 256
		};

		int bitrate =
		(version == 3 /* V1 */)
		? kBitrateV1[bitrate_index - 1]
		: kBitrateV2[bitrate_index - 1];

		if (out_bitrate) {
		*out_bitrate = bitrate;
		}

		frame_size = (12000 bitrate / sampling_rate + padding) * 4;

		if (out_num_samples) {
		*out_num_samples = 384;
		}
		} else {
		// layer II or III

		static const int kBitrateV1L2[] = {
		32, 48, 56, 64, 80, 96, 112, 128,
		160, 192, 224, 256, 320, 384
		};

		static const int kBitrateV1L3[] = {
		32, 40, 48, 56, 64, 80, 96, 112,
		128, 160, 192, 224, 256, 320
		};

		static const int kBitrateV2[] = {
		8, 16, 24, 32, 40, 48, 56, 64,
		80, 96, 112, 128, 144, 160
		};

		int bitrate;
		if (version == 3 /* V1 */) {
		bitrate = (layer == 2 /* L2 */)
		? kBitrateV1L2[bitrate_index - 1]
		: kBitrateV1L3[bitrate_index - 1];

		if (out_num_samples) {
		*out_num_samples = 1152;
		}
		} else {
		// V2 (or 2.5)

		bitrate = kBitrateV2[bitrate_index - 1];
		if (out_num_samples) {
		*out_num_samples = 576;
		}
		}

		if (out_bitrate) {
		*out_bitrate = bitrate;
		}

		if (version == 3 /* V1 */) {
		frame_size = 144000 bitrate / sampling_rate + padding;
		} else {
		// V2 or V2.5
		frame_size = 72000 bitrate / sampling_rate + padding;
		}
		}

		if (out_sampling_rate) {
		*out_sampling_rate = sampling_rate;
		}

		if (out_channels) {
		int channel_mode = (header >> 6) & 3;

		*out_channels = (channel_mode == 3) ? 1 : 2;
		}

		return true;
		}

		static bool Resync(
		const sp<DataSource> &source, uint32_t match_header,
		off64_t inout_pos, off64_t post_id3_pos, uint32_t *out_header) {
		@@ -297,7 +146,7 @@ static bool Resync(

		size_t frame_size;
		int sample_rate, num_channels, bitrate;
		if (!MP3Extractor::get_mp3_frame_size(
		if (!GetMPEGAudioFrameSize(
		header, &frame_size,
		&sample_rate, &num_channels, &bitrate)) {
		++pos;
		@@ -331,7 +180,7 @@ static bool Resync(
		}

		size_t test_frame_size;
		if (!MP3Extractor::get_mp3_frame_size(
		if (!GetMPEGAudioFrameSize(
		test_header, &test_frame_size)) {
		valid = false;
		break;
		@@ -437,7 +286,7 @@ MP3Extractor::MP3Extractor(
		int sample_rate;
		int num_channels;
		int bitrate;
		get_mp3_frame_size(
		GetMPEGAudioFrameSize(
		header, &frame_size, &sample_rate, &num_channels, &bitrate);

		mMeta = new MetaData;
		@@ -602,8 +451,9 @@ status_t MP3Source::read(
		uint32_t header = U32_AT((const uint8_t *)buffer->data());

		if ((header & kMask) == (mFixedHeader & kMask)
		&& MP3Extractor::get_mp3_frame_size(
		header, &frame_size, &sample_rate, NULL, &bitrate, &num_samples)) {
		&& GetMPEGAudioFrameSize(
		header, &frame_size, &sample_rate, NULL,
		&bitrate, &num_samples)) {
		break;
		}