コード例 #1
0
ファイル: SMF.java プロジェクト: jdgwartney/jmusic
 /**
  * Write the Track Chunk
  *
  * @param DataOutputStream dos
  * @param Track track - track to write
  * @exception IOException
  */
 private void writeTrackChunk(DataOutputStream odos, Track track) throws IOException {
   if (VERBOSE) System.out.println("Writing MIDI Track");
   // Write to temporary stream to buffer disk writes and
   // calculate the number of bytes written to the stream
   ByteArrayOutputStream baos = new ByteArrayOutputStream();
   DataOutputStream dos = new DataOutputStream(baos);
   int header = 0x4D54726B;
   Enumeration aEnum = track.getEvtList().elements();
   aEnum = track.getEvtList().elements();
   // At this stage Except that all events are NoteOn events
   while (aEnum.hasMoreElements()) {
     Event evt = (Event) aEnum.nextElement();
     evt.write(dos);
     if (DEBUG) evt.print();
   }
   // Write to the real stream
   odos.writeInt(header);
   odos.writeInt(baos.size());
   odos.write(baos.toByteArray(), 0, baos.size());
 }
コード例 #2
0
ファイル: SMFTools.java プロジェクト: Glamdring/computoser
 /**
  * Write the Track Chunk
  *
  * @param DataOutputStream dos
  * @param Track track - track to write
  * @exception IOException
  */
 @SuppressWarnings("rawtypes")
 private void writeTrackChunk(DataOutputStream odos, Track track) throws IOException {
   // Write to temporary stream to buffer disk writes and
   // calculate the number of bytes written to the stream
   ByteArrayOutputStream baos = new ByteArrayOutputStream();
   DataOutputStream dos = new DataOutputStream(baos);
   int header = 0x4D54726B;
   Enumeration en = track.getEvtList().elements();
   en = track.getEvtList().elements();
   // At this stage Except that all events are NoteOn events
   while (en.hasMoreElements()) {
     Event evt = (Event) en.nextElement();
     evt.write(dos);
     if (DEBUG) evt.print();
   }
   // Write to the real stream
   odos.writeInt(header);
   odos.writeInt(baos.size());
   odos.write(baos.toByteArray(), 0, baos.size());
 }
コード例 #3
0
ファイル: SMFTools.java プロジェクト: Glamdring/computoser
 @SuppressWarnings("rawtypes")
 private static void sortEvents(Vector evtList, Vector phrVct, SMFTools smf, Part part) {
   double startTime = 0.0;
   double[] currentLength = new double[100];
   Note[] curNote = new Note[100];
   int phrIndex = 0;
   // Go through evts
   for (int i = 0; i < evtList.size(); i++) {
     Event evt = (Event) evtList.elementAt(i);
     startTime += (double) evt.getTime() / (double) smf.getPPQN();
     if (evt.getID() == 007) {
       PChange pchg = (PChange) evt;
       part.setInstrument(pchg.getValue());
       // if this event is a NoteOn event go on
     } else if (evt.getID() == 005) {
       NoteOn noteOn = (NoteOn) evt;
       part.setChannel(noteOn.getMidiChannel());
       short pitch = noteOn.getPitch();
       int dynamic = noteOn.getVelocity();
       short midiChannel = noteOn.getMidiChannel();
       // if you're a true NoteOn
       if (dynamic > 0) {
         noteOn(
             phrIndex,
             curNote,
             smf,
             i,
             currentLength,
             startTime,
             phrVct,
             midiChannel,
             pitch,
             dynamic,
             evtList);
       }
     }
   }
 }
コード例 #4
0
ファイル: SMF.java プロジェクト: jdgwartney/jmusic
 /**
  * Reads a MIDI track chunk
  *
  * @param DataInputStream dis - the input stream to read from
  * @exception IOException
  */
 private void readTrackChunk(DataInputStream dis) throws IOException {
   // local variables for Track class
   Track track = new Track();
   // Insert new Track into a list of tracks
   this.trackList.addElement(track);
   int deltaTime = 0;
   if (VERBOSE) System.out.println("Reading Track ..........");
   // Read track header
   if (dis.readInt() != 0x4D54726B) { // If MTrk read is wrong
     throw new IOException("Track started in wrong place!!!!  ABORTING");
   } else { // If MTrk read ok get bytesRemaining
     dis.readInt();
   }
   // loop variables
   int status, oldStatus = 0, eventLength = 0;
   // Start gathering event data
   Event event = null;
   while (true) {
     try {
       // get variable length timestamp
       deltaTime = MidiUtil.readVarLength(dis);
       // mark stream so we can return if we need running status
       dis.mark(2);
       status = dis.readUnsignedByte();
       // decide on running status
       if (status < 0x80) { // set running status
         status = oldStatus;
         // return stream to before status read
         dis.reset();
       }
       // create default event of correct type
       if (status >= 0xFF) { // Meta Event
         int type = dis.readUnsignedByte();
         eventLength = MidiUtil.readVarLength(dis);
         event = MidiUtil.createMetaEvent(type);
       } else if (status >= 0xF0) { // System Exclusive --- NOT SUPPORTED
         System.out.println("SysEX---");
         eventLength = MidiUtil.readVarLength(dis);
       } else if (status >= 0x80) { // MIDI voice event
         short selection = (short) (status / 0x10);
         short midiChannel = (short) (status - (selection * 0x10));
         VoiceEvt evt = (VoiceEvt) MidiUtil.createVoiceEvent(selection);
         evt.setMidiChannel(midiChannel);
         event = evt;
         if (event == null) {
           throw new IOException("MIDI file read error: invalid voice event type!");
         }
       }
       oldStatus = status;
     } catch (Exception e) {
       e.printStackTrace();
       System.exit(1);
     }
     if (event != null) {
       // read data into the new event and
       // add the new event to the Track object
       event.setTime(deltaTime);
       event.read(dis);
       // if (VERBOSE) event.print();
       track.addEvent(event);
       // event.print();
       if (event instanceof EndTrack) break;
     } else {
       // skip the stream ahead to next valid event
       dis.skipBytes(eventLength);
     }
   }
 }