Examples with CannotReadException org.jaudiotagger.audio.exceptions.CannotReadException used on opensource projects

Example 21 with CannotReadException

use of org.jaudiotagger.audio.exceptions.CannotReadException in project MusicDNA by harjot-oberai.

the class Mp4StcoBox method debugShowStcoInfo.

public static void debugShowStcoInfo(RandomAccessFile raf) throws IOException, CannotReadException {
    Mp4BoxHeader moovHeader = Mp4BoxHeader.seekWithinLevel(raf, Mp4AtomIdentifier.MOOV.getFieldName());
    if (moovHeader == null) {
        throw new CannotReadException("This file does not appear to be an audio file");
    }
    ByteBuffer moovBuffer = ByteBuffer.allocate(moovHeader.getLength() - Mp4BoxHeader.HEADER_LENGTH);
    raf.getChannel().read(moovBuffer);
    moovBuffer.rewind();
    //Level 2-Searching for "mvhd" somewhere within "moov", we make a slice after finding header
    //so all getFields() methods will be relative to mvdh positions
    Mp4BoxHeader boxHeader = Mp4BoxHeader.seekWithinLevel(moovBuffer, Mp4AtomIdentifier.MVHD.getFieldName());
    if (boxHeader == null) {
        throw new CannotReadException("This file does not appear to be an audio file");
    }
    ByteBuffer mvhdBuffer = moovBuffer.slice();
    Mp4MvhdBox mvhd = new Mp4MvhdBox(boxHeader, mvhdBuffer);
    mvhdBuffer.position(mvhdBuffer.position() + boxHeader.getDataLength());
    //Level 2-Searching for "trak" within "moov"
    boxHeader = Mp4BoxHeader.seekWithinLevel(mvhdBuffer, Mp4AtomIdentifier.TRAK.getFieldName());
    int endOfFirstTrackInBuffer = mvhdBuffer.position() + boxHeader.getDataLength();
    if (boxHeader == null) {
        throw new CannotReadException("This file does not appear to be an audio file");
    }
    //Level 3-Searching for "mdia" within "trak"
    boxHeader = Mp4BoxHeader.seekWithinLevel(mvhdBuffer, Mp4AtomIdentifier.MDIA.getFieldName());
    if (boxHeader == null) {
        throw new CannotReadException("This file does not appear to be an audio file");
    }
    //Level 4-Searching for "mdhd" within "mdia"
    boxHeader = Mp4BoxHeader.seekWithinLevel(mvhdBuffer, Mp4AtomIdentifier.MDHD.getFieldName());
    if (boxHeader == null) {
        throw new CannotReadException("This file does not appear to be an audio file");
    }
    //Level 4-Searching for "minf" within "mdia"
    mvhdBuffer.position(mvhdBuffer.position() + boxHeader.getDataLength());
    boxHeader = Mp4BoxHeader.seekWithinLevel(mvhdBuffer, Mp4AtomIdentifier.MINF.getFieldName());
    if (boxHeader == null) {
        throw new CannotReadException("This file does not appear to be an audio file");
    }
    //Level 5-Searching for "smhd" within "minf"
    //Only an audio track would have a smhd frame
    boxHeader = Mp4BoxHeader.seekWithinLevel(mvhdBuffer, Mp4AtomIdentifier.SMHD.getFieldName());
    if (boxHeader == null) {
        throw new CannotReadException("This file does not appear to be an audio file");
    }
    mvhdBuffer.position(mvhdBuffer.position() + boxHeader.getDataLength());
    //Level 5-Searching for "stbl within "minf"
    boxHeader = Mp4BoxHeader.seekWithinLevel(mvhdBuffer, Mp4AtomIdentifier.STBL.getFieldName());
    if (boxHeader == null) {
        throw new CannotReadException("This file does not appear to be an audio file");
    }
    //Level 6-Searching for "stco within "stbl"
    boxHeader = Mp4BoxHeader.seekWithinLevel(mvhdBuffer, Mp4AtomIdentifier.STCO.getFieldName());
    if (boxHeader == null) {
        throw new CannotReadException("This file does not appear to be an audio file");
    }
    Mp4StcoBox stco = new Mp4StcoBox(boxHeader, mvhdBuffer);
    stco.printAlloffsets();
}

Example 22 with CannotReadException

use of org.jaudiotagger.audio.exceptions.CannotReadException in project MusicDNA by harjot-oberai.

the class Mp4TagReader method read.

/*
     * The metadata is stored in the box under the hierachy moov.udta.meta.ilst
     *
     * There are gaps between these boxes

     */
public Mp4Tag read(RandomAccessFile raf) throws CannotReadException, IOException {
    Mp4Tag tag = new Mp4Tag();
    //Get to the facts everything we are interested in is within the moov box, so just load data from file
    //once so no more file I/O needed
    Mp4BoxHeader moovHeader = Mp4BoxHeader.seekWithinLevel(raf, Mp4AtomIdentifier.MOOV.getFieldName());
    if (moovHeader == null) {
        throw new CannotReadException(ErrorMessage.MP4_FILE_NOT_CONTAINER.getMsg());
    }
    ByteBuffer moovBuffer = ByteBuffer.allocate(moovHeader.getLength() - Mp4BoxHeader.HEADER_LENGTH);
    raf.getChannel().read(moovBuffer);
    moovBuffer.rewind();
    //Level 2-Searching for "udta" within "moov"
    Mp4BoxHeader boxHeader = Mp4BoxHeader.seekWithinLevel(moovBuffer, Mp4AtomIdentifier.UDTA.getFieldName());
    if (boxHeader != null) {
        //Level 3-Searching for "meta" within udta
        boxHeader = Mp4BoxHeader.seekWithinLevel(moovBuffer, Mp4AtomIdentifier.META.getFieldName());
        if (boxHeader == null) {
            logger.warning(ErrorMessage.MP4_FILE_HAS_NO_METADATA.getMsg());
            return tag;
        }
        Mp4MetaBox meta = new Mp4MetaBox(boxHeader, moovBuffer);
        meta.processData();
        //Level 4- Search for "ilst" within meta
        boxHeader = Mp4BoxHeader.seekWithinLevel(moovBuffer, Mp4AtomIdentifier.ILST.getFieldName());
        //This file does not actually contain a tag
        if (boxHeader == null) {
            logger.warning(ErrorMessage.MP4_FILE_HAS_NO_METADATA.getMsg());
            return tag;
        }
    } else {
        //Level 2-Searching for "meta" not within udta
        boxHeader = Mp4BoxHeader.seekWithinLevel(moovBuffer, Mp4AtomIdentifier.META.getFieldName());
        if (boxHeader == null) {
            logger.warning(ErrorMessage.MP4_FILE_HAS_NO_METADATA.getMsg());
            return tag;
        }
        Mp4MetaBox meta = new Mp4MetaBox(boxHeader, moovBuffer);
        meta.processData();
        //Level 3- Search for "ilst" within meta
        boxHeader = Mp4BoxHeader.seekWithinLevel(moovBuffer, Mp4AtomIdentifier.ILST.getFieldName());
        //This file does not actually contain a tag
        if (boxHeader == null) {
            logger.warning(ErrorMessage.MP4_FILE_HAS_NO_METADATA.getMsg());
            return tag;
        }
    }
    //Size of metadata (exclude the size of the ilst parentHeader), take a slice starting at
    //metadata children to make things safer
    int length = boxHeader.getLength() - Mp4BoxHeader.HEADER_LENGTH;
    ByteBuffer metadataBuffer = moovBuffer.slice();
    //Datalength is longer are there boxes after ilst at this level?
    logger.config("headerlengthsays:" + length + "datalength:" + metadataBuffer.limit());
    int read = 0;
    logger.config("Started to read metadata fields at position is in metadata buffer:" + metadataBuffer.position());
    while (read < length) {
        //Read the boxHeader
        boxHeader.update(metadataBuffer);
        //Create the corresponding datafield from the id, and slice the buffer so position of main buffer
        //wont get affected
        logger.config("Next position is at:" + metadataBuffer.position());
        createMp4Field(tag, boxHeader, metadataBuffer.slice());
        //Move position in buffer to the start of the next parentHeader
        metadataBuffer.position(metadataBuffer.position() + boxHeader.getDataLength());
        read += boxHeader.getLength();
    }
    return tag;
}

Example 23 with CannotReadException

use of org.jaudiotagger.audio.exceptions.CannotReadException in project MusicDNA by harjot-oberai.

the class WavInfoReader method read.

public GenericAudioHeader read(RandomAccessFile raf) throws CannotReadException, IOException {
    // Reads wav header----------------------------------------
    GenericAudioHeader info = new GenericAudioHeader();
    if (raf.length() < 12) {
        throw new CannotReadException("This is not a WAV File (<12 bytes)");
    }
    byte[] b = new byte[12];
    raf.read(b);
    WavRIFFHeader wh = new WavRIFFHeader(b);
    if (wh.isValid()) {
        b = new byte[34];
        raf.read(b);
        WavFormatHeader wfh = new WavFormatHeader(b);
        if (wfh.isValid()) {
            // Populates
            // encodingInfo----------------------------------------------------
            info.setPreciseLength(((float) raf.length() - (float) 36) / wfh.getBytesPerSecond());
            info.setChannelNumber(wfh.getChannelNumber());
            info.setSamplingRate(wfh.getSamplingRate());
            info.setBitsPerSample(wfh.getBitsPerSample());
            info.setEncodingType("WAV-RIFF " + wfh.getBitsPerSample() + " bits");
            info.setExtraEncodingInfos("");
            info.setBitrate(wfh.getBytesPerSecond() * 8 / 1000);
            info.setVariableBitRate(false);
        } else {
            throw new CannotReadException("Wav Format Header not valid");
        }
    } else {
        throw new CannotReadException("Wav RIFF Header not valid");
    }
    return info;
}

Example 24 with CannotReadException

use of org.jaudiotagger.audio.exceptions.CannotReadException in project MusicDNA by harjot-oberai.

the class OggVorbisTagReader method convertToVorbisSetupHeaderPacketAndAdditionalPackets.

/**
     * The Vorbis Setup Header may span multiple(2) pages, athough it doesnt normally. We pass the start of the
     * file offset of the OggPage it belongs on, it probably won'timer be first packet, also returns any addditional
     * packets that immediately follow the setup header in original file
     * @param fileOffsetOfStartingOggPage
     * @param raf
     * @throws org.jaudiotagger.audio.exceptions.CannotReadException
     * @throws java.io.IOException
     * @return
     */
public byte[] convertToVorbisSetupHeaderPacketAndAdditionalPackets(long fileOffsetOfStartingOggPage, RandomAccessFile raf) throws IOException, CannotReadException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    //Seek to specified offset
    raf.seek(fileOffsetOfStartingOggPage);
    //Read Page
    OggPageHeader setupPageHeader = OggPageHeader.read(raf);
    //is setupheader
    if (setupPageHeader.getPacketList().size() > 1) {
        raf.skipBytes(setupPageHeader.getPacketList().get(0).getLength());
    }
    //Now should be at start of next packet, check this is the vorbis setup header
    byte[] b = new byte[VorbisHeader.FIELD_PACKET_TYPE_LENGTH + VorbisHeader.FIELD_CAPTURE_PATTERN_LENGTH];
    raf.read(b);
    if (!isVorbisSetupHeader(b)) {
        throw new CannotReadException("Unable to find setup header(2), unable to write ogg file");
    }
    //Go back to start of setupheader data
    raf.seek(raf.getFilePointer() - (VorbisHeader.FIELD_PACKET_TYPE_LENGTH + VorbisHeader.FIELD_CAPTURE_PATTERN_LENGTH));
    //Read data
    if (setupPageHeader.getPacketList().size() > 1) {
        b = new byte[setupPageHeader.getPacketList().get(1).getLength()];
        raf.read(b);
        baos.write(b);
    } else {
        b = new byte[setupPageHeader.getPacketList().get(0).getLength()];
        raf.read(b);
        baos.write(b);
    }
    //Return Data
    if (!setupPageHeader.isLastPacketIncomplete() || setupPageHeader.getPacketList().size() > 2) {
        logger.config("Setupheader finishes on this page");
        if (setupPageHeader.getPacketList().size() > 2) {
            for (int i = 2; i < setupPageHeader.getPacketList().size(); i++) {
                b = new byte[setupPageHeader.getPacketList().get(i).getLength()];
                raf.read(b);
                baos.write(b);
            }
        }
        return baos.toByteArray();
    }
    //so carry on reading pages until we get to the end of comment
    while (true) {
        logger.config("Reading another page");
        OggPageHeader nextPageHeader = OggPageHeader.read(raf);
        b = new byte[nextPageHeader.getPacketList().get(0).getLength()];
        raf.read(b);
        baos.write(b);
        //on this page so thats all we need and we can return
        if (nextPageHeader.getPacketList().size() > 1) {
            logger.config("Setupheader finishes on this page");
            return baos.toByteArray();
        }
        //There is only the Setupheader packet on page if it has completed on this page we can return
        if (!nextPageHeader.isLastPacketIncomplete()) {
            logger.config("Setupheader finish on Page because this packet is complete");
            return baos.toByteArray();
        }
    }
}

Example 25 with CannotReadException

use of org.jaudiotagger.audio.exceptions.CannotReadException in project MusicDNA by harjot-oberai.

the class OggVorbisTagReader method convertToVorbisSetupHeaderPacket.

/**
     * The Vorbis Setup Header may span multiple(2) pages, athough it doesnt normally. We pass the start of the
     * file offset of the OggPage it belongs on, it probably won'timer be first packet.
     * @param fileOffsetOfStartingOggPage
     * @param raf
     * @throws org.jaudiotagger.audio.exceptions.CannotReadException
     * @throws java.io.IOException
     * @return
     */
public byte[] convertToVorbisSetupHeaderPacket(long fileOffsetOfStartingOggPage, RandomAccessFile raf) throws IOException, CannotReadException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    //Seek to specified offset
    raf.seek(fileOffsetOfStartingOggPage);
    //Read Page
    OggPageHeader setupPageHeader = OggPageHeader.read(raf);
    //is setupheader
    if (setupPageHeader.getPacketList().size() > 1) {
        raf.skipBytes(setupPageHeader.getPacketList().get(0).getLength());
    }
    //Now should be at start of next packet, check this is the vorbis setup header
    byte[] b = new byte[VorbisHeader.FIELD_PACKET_TYPE_LENGTH + VorbisHeader.FIELD_CAPTURE_PATTERN_LENGTH];
    raf.read(b);
    if (!isVorbisSetupHeader(b)) {
        throw new CannotReadException("Unable to find setup header(2), unable to write ogg file");
    }
    //Go back to start of setupheader data
    raf.seek(raf.getFilePointer() - (VorbisHeader.FIELD_PACKET_TYPE_LENGTH + VorbisHeader.FIELD_CAPTURE_PATTERN_LENGTH));
    //Read data
    if (setupPageHeader.getPacketList().size() > 1) {
        b = new byte[setupPageHeader.getPacketList().get(1).getLength()];
        raf.read(b);
        baos.write(b);
    } else {
        b = new byte[setupPageHeader.getPacketList().get(0).getLength()];
        raf.read(b);
        baos.write(b);
    }
    //Return Data
    if (!setupPageHeader.isLastPacketIncomplete() || setupPageHeader.getPacketList().size() > 2) {
        logger.config("Setupheader finishes on this page");
        return baos.toByteArray();
    }
    //so carry on reading pages until we get to the end of comment
    while (true) {
        logger.config("Reading another page");
        OggPageHeader nextPageHeader = OggPageHeader.read(raf);
        b = new byte[nextPageHeader.getPacketList().get(0).getLength()];
        raf.read(b);
        baos.write(b);
        //on this page so thats all we need and we can return
        if (nextPageHeader.getPacketList().size() > 1) {
            logger.config("Setupheader finishes on this page");
            return baos.toByteArray();
        }
        //There is only the Setupheader packet on page if it has completed on this page we can return
        if (!nextPageHeader.isLastPacketIncomplete()) {
            logger.config("Setupheader finish on Page because this packet is complete");
            return baos.toByteArray();
        }
    }
}