Examples with Track javax.sound.midi.Track used on opensource projects

Example 1 with Track

use of javax.sound.midi.Track in project jdk8u_jdk by JetBrains.

the class SoftMidiAudioFileReader method getAudioInputStream.

public AudioInputStream getAudioInputStream(Sequence seq) throws UnsupportedAudioFileException, IOException {
    AudioSynthesizer synth = (AudioSynthesizer) new SoftSynthesizer();
    AudioInputStream stream;
    Receiver recv;
    try {
        stream = synth.openStream(format, null);
        recv = synth.getReceiver();
    } catch (MidiUnavailableException e) {
        throw new IOException(e.toString());
    }
    float divtype = seq.getDivisionType();
    Track[] tracks = seq.getTracks();
    int[] trackspos = new int[tracks.length];
    int mpq = 500000;
    int seqres = seq.getResolution();
    long lasttick = 0;
    long curtime = 0;
    while (true) {
        MidiEvent selevent = null;
        int seltrack = -1;
        for (int i = 0; i < tracks.length; i++) {
            int trackpos = trackspos[i];
            Track track = tracks[i];
            if (trackpos < track.size()) {
                MidiEvent event = track.get(trackpos);
                if (selevent == null || event.getTick() < selevent.getTick()) {
                    selevent = event;
                    seltrack = i;
                }
            }
        }
        if (seltrack == -1)
            break;
        trackspos[seltrack]++;
        long tick = selevent.getTick();
        if (divtype == Sequence.PPQ)
            curtime += ((tick - lasttick) * mpq) / seqres;
        else
            curtime = (long) ((tick * 1000000.0 * divtype) / seqres);
        lasttick = tick;
        MidiMessage msg = selevent.getMessage();
        if (msg instanceof MetaMessage) {
            if (divtype == Sequence.PPQ) {
                if (((MetaMessage) msg).getType() == 0x51) {
                    byte[] data = ((MetaMessage) msg).getData();
                    if (data.length < 3) {
                        throw new UnsupportedAudioFileException();
                    }
                    mpq = ((data[0] & 0xff) << 16) | ((data[1] & 0xff) << 8) | (data[2] & 0xff);
                }
            }
        } else {
            recv.send(msg, curtime);
        }
    }
    long totallen = curtime / 1000000;
    long len = (long) (stream.getFormat().getFrameRate() * (totallen + 4));
    stream = new AudioInputStream(stream, stream.getFormat(), len);
    return stream;
}

Example 2 with Track

use of javax.sound.midi.Track in project jdk8u_jdk by JetBrains.

the class StandardMidiFileWriter method getFileStream.

//=================================================================================
private InputStream getFileStream(int type, Sequence sequence) throws IOException {
    Track[] tracks = sequence.getTracks();
    int bytesBuilt = 0;
    int headerLength = 14;
    int length = 0;
    int timeFormat;
    float divtype;
    PipedOutputStream hpos = null;
    DataOutputStream hdos = null;
    PipedInputStream headerStream = null;
    InputStream[] trackStreams = null;
    InputStream trackStream = null;
    InputStream fStream = null;
    // Determine the filetype to write
    if (type == MIDI_TYPE_0) {
        if (tracks.length != 1) {
            return null;
        }
    } else if (type == MIDI_TYPE_1) {
        if (tracks.length < 1) {
            // $$jb: 05.31.99: we _can_ write TYPE_1 if tracks.length==1
            return null;
        }
    } else {
        if (tracks.length == 1) {
            type = MIDI_TYPE_0;
        } else if (tracks.length > 1) {
            type = MIDI_TYPE_1;
        } else {
            return null;
        }
    }
    // Now build the file one track at a time
    // Note that above we made sure that MIDI_TYPE_0 only happens
    // if tracks.length==1
    trackStreams = new InputStream[tracks.length];
    int trackCount = 0;
    for (int i = 0; i < tracks.length; i++) {
        try {
            trackStreams[trackCount] = writeTrack(tracks[i], type);
            trackCount++;
        } catch (InvalidMidiDataException e) {
            if (Printer.err)
                Printer.err("Exception in write: " + e.getMessage());
        }
    //bytesBuilt += trackStreams[i].getLength();
    }
    // Now seqence the track streams
    if (trackCount == 1) {
        trackStream = trackStreams[0];
    } else if (trackCount > 1) {
        trackStream = trackStreams[0];
        for (int i = 1; i < tracks.length; i++) {
            // don't include failed track streams
            if (trackStreams[i] != null) {
                trackStream = new SequenceInputStream(trackStream, trackStreams[i]);
            }
        }
    } else {
        throw new IllegalArgumentException("invalid MIDI data in sequence");
    }
    // Now build the header...
    hpos = new PipedOutputStream();
    hdos = new DataOutputStream(hpos);
    headerStream = new PipedInputStream(hpos);
    // Write the magic number
    hdos.writeInt(MThd_MAGIC);
    // Write the header length
    hdos.writeInt(headerLength - 8);
    // Write the filetype
    if (type == MIDI_TYPE_0) {
        hdos.writeShort(0);
    } else {
        // MIDI_TYPE_1
        hdos.writeShort(1);
    }
    // Write the number of tracks
    hdos.writeShort((short) trackCount);
    // Determine and write the timing format
    divtype = sequence.getDivisionType();
    if (divtype == Sequence.PPQ) {
        timeFormat = sequence.getResolution();
    } else if (divtype == Sequence.SMPTE_24) {
        timeFormat = (24 << 8) * -1;
        timeFormat += (sequence.getResolution() & 0xFF);
    } else if (divtype == Sequence.SMPTE_25) {
        timeFormat = (25 << 8) * -1;
        timeFormat += (sequence.getResolution() & 0xFF);
    } else if (divtype == Sequence.SMPTE_30DROP) {
        timeFormat = (29 << 8) * -1;
        timeFormat += (sequence.getResolution() & 0xFF);
    } else if (divtype == Sequence.SMPTE_30) {
        timeFormat = (30 << 8) * -1;
        timeFormat += (sequence.getResolution() & 0xFF);
    } else {
        // $$jb: 04.08.99: What to really do here?
        return null;
    }
    hdos.writeShort(timeFormat);
    // now construct an InputStream to become the FileStream
    fStream = new SequenceInputStream(headerStream, trackStream);
    hdos.close();
    length = bytesBuilt + headerLength;
    return fStream;
}

Example 3 with Track

use of javax.sound.midi.Track in project tika by apache.

the class MidiParser method parse.

public void parse(InputStream stream, ContentHandler handler, Metadata metadata, ParseContext context) throws IOException, SAXException, TikaException {
    metadata.set(Metadata.CONTENT_TYPE, "audio/midi");
    XHTMLContentHandler xhtml = new XHTMLContentHandler(handler, metadata);
    xhtml.startDocument();
    // MidiSystem expects the stream to support the mark feature
    if (!stream.markSupported()) {
        stream = new BufferedInputStream(stream);
    }
    try {
        Sequence sequence = MidiSystem.getSequence(stream);
        Track[] tracks = sequence.getTracks();
        metadata.set("tracks", String.valueOf(tracks.length));
        // TODO: Use XMPDM.TRACKS?
        Patch[] patches = sequence.getPatchList();
        metadata.set("patches", String.valueOf(patches.length));
        float type = sequence.getDivisionType();
        if (type == Sequence.PPQ) {
            metadata.set("divisionType", "PPQ");
        } else if (type == Sequence.SMPTE_24) {
            metadata.set("divisionType", "SMPTE_24");
        } else if (type == Sequence.SMPTE_25) {
            metadata.set("divisionType", "SMPTE_25");
        } else if (type == Sequence.SMPTE_30) {
            metadata.set("divisionType", "SMPTE_30");
        } else if (type == Sequence.SMPTE_30DROP) {
            metadata.set("divisionType", "SMPTE_30DROP");
        } else if (type == Sequence.SMPTE_24) {
            metadata.set("divisionType", String.valueOf(type));
        }
        for (Track track : tracks) {
            xhtml.startElement("p");
            for (int i = 0; i < track.size(); i++) {
                MidiMessage message = track.get(i).getMessage();
                if (message instanceof MetaMessage) {
                    MetaMessage meta = (MetaMessage) message;
                    // Types 1-15 are reserved for text events
                    if (meta.getType() >= 1 && meta.getType() <= 15) {
                        // FIXME: What's the encoding?
                        xhtml.characters(new String(meta.getData(), ISO_8859_1));
                    }
                }
            }
            xhtml.endElement("p");
        }
    } catch (InvalidMidiDataException ignore) {
    // There is no way to know whether this exception was
    // caused by the document being corrupted or by the format
    // just being unsupported. So we do nothing.
    }
    xhtml.endDocument();
}