Examples with OggPageHeader org.jaudiotagger.audio.ogg.util.OggPageHeader used on opensource projects

Example 6 with OggPageHeader

use of org.jaudiotagger.audio.ogg.util.OggPageHeader in project MusicDNA by harjot-oberai.

the class OggFileReader method readOggPageHeader.

/**
     * Return count Ogg Page header, count starts from zero
     *
     * count=0; should return PageHeader that contains Vorbis Identification Header
     * count=1; should return Pageheader that contains VorbisComment and possibly SetupHeader
     * count>=2; should return PageHeader containing remaining VorbisComment,SetupHeader and/or Audio
     *
     * @param raf
     * @param count
     * @return
     * @throws CannotReadException
     * @throws IOException
     */
public OggPageHeader readOggPageHeader(RandomAccessFile raf, int count) throws CannotReadException, IOException {
    OggPageHeader pageHeader = OggPageHeader.read(raf);
    while (count > 0) {
        raf.seek(raf.getFilePointer() + pageHeader.getPageLength());
        pageHeader = OggPageHeader.read(raf);
        count--;
    }
    return pageHeader;
}

Example 7 with OggPageHeader

use of org.jaudiotagger.audio.ogg.util.OggPageHeader in project MusicDNA by harjot-oberai.

the class OggVorbisTagWriter method writeRemainingPagesOld.

public void writeRemainingPagesOld(int pageSequence, RandomAccessFile raf, RandomAccessFile rafTemp) throws IOException, CannotReadException, CannotWriteException {
    //Now the Page Sequence Number for all the subsequent pages (containing audio frames) are out because there are
    //less pages before then there used to be, so need to adjust
    long startAudio = raf.getFilePointer();
    long startAudioWritten = rafTemp.getFilePointer();
    logger.fine("Writing audio, audio starts in original file at :" + startAudio + ":Written to:" + startAudioWritten);
    while (raf.getFilePointer() < raf.length()) {
        logger.fine("Reading Ogg Page");
        OggPageHeader nextPage = OggPageHeader.read(raf);
        //Create buffer large enough for next page (header and data) and set byte order to LE so we can use
        //putInt method
        ByteBuffer nextPageHeaderBuffer = ByteBuffer.allocate(nextPage.getRawHeaderData().length + nextPage.getPageLength());
        nextPageHeaderBuffer.order(ByteOrder.LITTLE_ENDIAN);
        nextPageHeaderBuffer.put(nextPage.getRawHeaderData());
        raf.getChannel().read(nextPageHeaderBuffer);
        //Recalculate Page Sequence Number
        nextPageHeaderBuffer.putInt(OggPageHeader.FIELD_PAGE_SEQUENCE_NO_POS, ++pageSequence);
        //Calculate Checksum
        calculateChecksumOverPage(nextPageHeaderBuffer);
        rafTemp.getChannel().write(nextPageHeaderBuffer);
    }
    if ((raf.length() - startAudio) != (rafTemp.length() - startAudioWritten)) {
        throw new CannotWriteException("File written counts don'timer match, file not written");
    }
}

Example 8 with OggPageHeader

use of org.jaudiotagger.audio.ogg.util.OggPageHeader 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 9 with OggPageHeader

use of org.jaudiotagger.audio.ogg.util.OggPageHeader 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();
        }
    }
}

Example 10 with OggPageHeader

use of org.jaudiotagger.audio.ogg.util.OggPageHeader in project MusicDNA by harjot-oberai.

the class OggVorbisTagWriter method writeRemainingPages.

/**
     * Write all the remaining pages as they are except that the page sequence needs to be modified.
     *
     * @param pageSequence
     * @param raf
     * @param rafTemp
     * @throws IOException
     * @throws CannotReadException
     * @throws CannotWriteException
     */
public void writeRemainingPages(int pageSequence, RandomAccessFile raf, RandomAccessFile rafTemp) throws IOException, CannotReadException, CannotWriteException {
    long startAudio = raf.getFilePointer();
    long startAudioWritten = rafTemp.getFilePointer();
    //TODO there is a risk we wont have enough memory to create these buffers
    ByteBuffer bb = ByteBuffer.allocate((int) (raf.length() - raf.getFilePointer()));
    ByteBuffer bbTemp = ByteBuffer.allocate((int) (raf.length() - raf.getFilePointer()));
    //Read in the rest of the data into bytebuffer and rewind it to start
    raf.getChannel().read(bb);
    bb.rewind();
    while (bb.hasRemaining()) {
        OggPageHeader nextPage = OggPageHeader.read(bb);
        //Create buffer large enough for next page (header and data) and set byte order to LE so we can use
        //putInt method
        ByteBuffer nextPageHeaderBuffer = ByteBuffer.allocate(nextPage.getRawHeaderData().length + nextPage.getPageLength());
        nextPageHeaderBuffer.order(ByteOrder.LITTLE_ENDIAN);
        nextPageHeaderBuffer.put(nextPage.getRawHeaderData());
        ByteBuffer data = bb.slice();
        data.limit(nextPage.getPageLength());
        nextPageHeaderBuffer.put(data);
        nextPageHeaderBuffer.putInt(OggPageHeader.FIELD_PAGE_SEQUENCE_NO_POS, ++pageSequence);
        calculateChecksumOverPage(nextPageHeaderBuffer);
        bb.position(bb.position() + nextPage.getPageLength());
        nextPageHeaderBuffer.rewind();
        bbTemp.put(nextPageHeaderBuffer);
    }
    //Now just write as a single IO operation
    bbTemp.rewind();
    rafTemp.getChannel().write(bbTemp);
    //TODO could we do any other checks to check data written correctly ?
    if ((raf.length() - startAudio) != (rafTemp.length() - startAudioWritten)) {
        throw new CannotWriteException("File written counts don'timer match, file not written");
    }
}