Examples with ParsableByteArray com.google.android.exoplayer2.util.ParsableByteArray used on opensource projects

Example 56 with ParsableByteArray

use of com.google.android.exoplayer2.util.ParsableByteArray in project ExoPlayer by google.

the class PsshAtomUtil method parsePsshAtom.

/**
   * Parses the UUID and scheme specific data from a PSSH atom. Version 0 and 1 PSSH atoms are
   * supported.
   *
   * @param atom The atom to parse.
   * @return A pair consisting of the parsed UUID and scheme specific data. Null if the input is
   *     not a valid PSSH atom, or if the PSSH atom has an unsupported version.
   */
private static Pair<UUID, byte[]> parsePsshAtom(byte[] atom) {
    ParsableByteArray atomData = new ParsableByteArray(atom);
    if (atomData.limit() < Atom.FULL_HEADER_SIZE + 16 + /* UUID */
    4) /* DataSize */
    {
        // Data too short.
        return null;
    }
    atomData.setPosition(0);
    int atomSize = atomData.readInt();
    if (atomSize != atomData.bytesLeft() + 4) {
        // Not an atom, or incorrect atom size.
        return null;
    }
    int atomType = atomData.readInt();
    if (atomType != Atom.TYPE_pssh) {
        // Not an atom, or incorrect atom type.
        return null;
    }
    int atomVersion = Atom.parseFullAtomVersion(atomData.readInt());
    if (atomVersion > 1) {
        Log.w(TAG, "Unsupported pssh version: " + atomVersion);
        return null;
    }
    UUID uuid = new UUID(atomData.readLong(), atomData.readLong());
    if (atomVersion == 1) {
        int keyIdCount = atomData.readUnsignedIntToInt();
        atomData.skipBytes(16 * keyIdCount);
    }
    int dataSize = atomData.readUnsignedIntToInt();
    if (dataSize != atomData.bytesLeft()) {
        // Incorrect dataSize.
        return null;
    }
    byte[] data = new byte[dataSize];
    atomData.readBytes(data, 0, dataSize);
    return Pair.create(uuid, data);
}

Example 57 with ParsableByteArray

use of com.google.android.exoplayer2.util.ParsableByteArray in project ExoPlayer by google.

the class FlacReader method readHeaders.

@Override
protected boolean readHeaders(ParsableByteArray packet, long position, SetupData setupData) throws IOException, InterruptedException {
    byte[] data = packet.data;
    if (streamInfo == null) {
        streamInfo = new FlacStreamInfo(data, 17);
        byte[] metadata = Arrays.copyOfRange(data, 9, packet.limit());
        // Set the last metadata block flag, ignore the other blocks
        metadata[4] = (byte) 0x80;
        List<byte[]> initializationData = Collections.singletonList(metadata);
        setupData.format = Format.createAudioSampleFormat(null, MimeTypes.AUDIO_FLAC, null, Format.NO_VALUE, streamInfo.bitRate(), streamInfo.channels, streamInfo.sampleRate, initializationData, null, 0, null);
    } else if ((data[0] & 0x7F) == SEEKTABLE_PACKET_TYPE) {
        flacOggSeeker = new FlacOggSeeker();
        flacOggSeeker.parseSeekTable(packet);
    } else if (isAudioPacket(data)) {
        if (flacOggSeeker != null) {
            flacOggSeeker.setFirstFrameOffset(position);
            setupData.oggSeeker = flacOggSeeker;
        }
        return false;
    }
    return true;
}

Example 58 with ParsableByteArray

use of com.google.android.exoplayer2.util.ParsableByteArray in project ExoPlayer by google.

the class OggExtractor method sniff.

@Override
public boolean sniff(ExtractorInput input) throws IOException, InterruptedException {
    try {
        OggPageHeader header = new OggPageHeader();
        if (!header.populate(input, true) || (header.type & 0x02) != 0x02) {
            return false;
        }
        int length = Math.min(header.bodySize, MAX_VERIFICATION_BYTES);
        ParsableByteArray scratch = new ParsableByteArray(length);
        input.peekFully(scratch.data, 0, length);
        if (FlacReader.verifyBitstreamType(resetPosition(scratch))) {
            streamReader = new FlacReader();
        } else if (VorbisReader.verifyBitstreamType(resetPosition(scratch))) {
            streamReader = new VorbisReader();
        } else if (OpusReader.verifyBitstreamType(resetPosition(scratch))) {
            streamReader = new OpusReader();
        } else {
            return false;
        }
        return true;
    } catch (ParserException e) {
        return false;
    }
}