Edit list uses timescale from movie header (fc80e9ec) · Commits · e / os / android_frameworks_av

media/libstagefright/MPEG4Extractor.cpp

+10 −7

Original line number	Diff line number	Diff line
		@@ -341,6 +341,7 @@ MPEG4Extractor::MPEG4Extractor(const sp<DataSource> &source)
		mDataSource(source),
		mInitCheck(NO_INIT),
		mHasVideo(false),
		mHeaderTimescale(0),
		mFirstTrack(NULL),
		mLastTrack(NULL),
		mFileMetaData(new MetaData),
		@@ -921,7 +922,7 @@ status_t MPEG4Extractor::parseChunk(off64_t *offset, int depth) {
		if (entry_count != 1) {
		// we only support a single entry at the moment, for gapless playback
		ALOGW("ignoring edit list with %d entries", entry_count);
		} else if (mLastTrack->timescale == 0) {
		} else if (mHeaderTimescale == 0) {
		ALOGW("ignoring edit list because timescale is 0");
		} else {
		off64_t entriesoffset = data_offset + 8;
		@@ -946,9 +947,9 @@ status_t MPEG4Extractor::parseChunk(off64_t *offset, int depth) {
		return ERROR_IO;
		}

		uint64_t halfscale = mLastTrack->timescale / 2;
		segment_duration = (segment_duration * 1000000 + halfscale)/ mLastTrack->timescale;
		media_time = (media_time * 1000000 + halfscale) / mLastTrack->timescale;
		uint64_t halfscale = mHeaderTimescale / 2;
		segment_duration = (segment_duration * 1000000 + halfscale)/ mHeaderTimescale;
		media_time = (media_time * 1000000 + halfscale) / mHeaderTimescale;

		int64_t duration;
		int32_t samplerate;
		@@ -1627,24 +1628,26 @@ status_t MPEG4Extractor::parseChunk(off64_t *offset, int depth) {

		case FOURCC('m', 'v', 'h', 'd'):
		{
		if (chunk_data_size < 12) {
		if (chunk_data_size < 24) {
		return ERROR_MALFORMED;
		}

		uint8_t header[12];
		uint8_t header[24];
		if (mDataSource->readAt(
		data_offset, header, sizeof(header))
		< (ssize_t)sizeof(header)) {
		return ERROR_IO;
		}

		int64_t creationTime;
		uint64_t creationTime;
		if (header[0] == 1) {
		creationTime = U64_AT(&header[4]);
		mHeaderTimescale = U32_AT(&header[20]);
		} else if (header[0] != 0) {
		return ERROR_MALFORMED;
		} else {
		creationTime = U32_AT(&header[4]);
		mHeaderTimescale = U32_AT(&header[12]);
		}

		String8 s;

media/libstagefright/include/MPEG4Extractor.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -82,6 +82,7 @@ private:
		sp<DataSource> mDataSource;
		status_t mInitCheck;
		bool mHasVideo;
		uint32_t mHeaderTimescale;

		Track mFirstTrack, mLastTrack;