am c3429415: Merge "Don\'t use the bitrate of the xing header" (209f911d) · Commits · e / devices / smdk4412 / android_frameworks_av

media/libstagefright/MP3Extractor.cpp

+35 −23

Original line number	Diff line number	Diff line
		@@ -282,17 +282,50 @@ MP3Extractor::MP3Extractor(

		mFirstFramePos = pos;
		mFixedHeader = header;
		mMeta = new MetaData;
		sp<XINGSeeker> seeker = XINGSeeker::CreateFromSource(mDataSource, mFirstFramePos);

		if (seeker == NULL) {
		mSeeker = VBRISeeker::CreateFromSource(mDataSource, post_id3_pos);
		} else {
		mSeeker = seeker;
		int encd = seeker->getEncoderDelay();
		int encp = seeker->getEncoderPadding();
		if (encd != 0 \|\| encp != 0) {
		mMeta->setInt32(kKeyEncoderDelay, encd);
		mMeta->setInt32(kKeyEncoderPadding, encp);
		}
		}

		if (mSeeker != NULL) {
		// While it is safe to send the XING/VBRI frame to the decoder, this will
		// result in an extra 1152 samples being output. In addition, the bitrate
		// of the Xing header might not match the rest of the file, which could
		// lead to problems when seeking. The real first frame to decode is after
		// the XING/VBRI frame, so skip there.
		size_t frame_size;
		int sample_rate;
		int num_channels;
		int bitrate;
		GetMPEGAudioFrameSize(
		header, &frame_size, &sample_rate, &num_channels, &bitrate);
		pos += frame_size;
		if (!Resync(mDataSource, 0, &pos, &post_id3_pos, &header)) {
		// mInitCheck will remain NO_INIT
		return;
		}
		mFirstFramePos = pos;
		mFixedHeader = header;
		}

		unsigned layer = 4 - ((header >> 17) & 3);
		size_t frame_size;
		int sample_rate;
		int num_channels;
		int bitrate;
		GetMPEGAudioFrameSize(
		header, &frame_size, &sample_rate, &num_channels, &bitrate);

		mMeta = new MetaData;
		unsigned layer = 4 - ((header >> 17) & 3);

		switch (layer) {
		case 1:
		@@ -312,27 +345,6 @@ MP3Extractor::MP3Extractor(
		mMeta->setInt32(kKeyBitRate, bitrate * 1000);
		mMeta->setInt32(kKeyChannelCount, num_channels);

		sp<XINGSeeker> seeker = XINGSeeker::CreateFromSource(mDataSource, mFirstFramePos);

		if (seeker == NULL) {
		mSeeker = VBRISeeker::CreateFromSource(mDataSource, post_id3_pos);
		} else {
		mSeeker = seeker;
		int encd = seeker->getEncoderDelay();
		int encp = seeker->getEncoderPadding();
		if (encd != 0 \|\| encp != 0) {
		mMeta->setInt32(kKeyEncoderDelay, encd);
		mMeta->setInt32(kKeyEncoderPadding, encp);
		}
		}

		if (mSeeker != NULL) {
		// While it is safe to send the XING/VBRI frame to the decoder, this will
		// result in an extra 1152 samples being output. The real first frame to
		// decode is after the XING/VBRI frame, so skip there.
		mFirstFramePos += frame_size;
		}

		int64_t durationUs;

		if (mSeeker == NULL \|\| !mSeeker->getDuration(&durationUs)) {