src/camidion/chordhelper/music/AbstractNoteTrackSpec.java

   1 package camidion.chordhelper.music;
   2
   3 import javax.sound.midi.InvalidMidiDataException;
   4 import javax.sound.midi.MidiEvent;
   5 import javax.sound.midi.MidiMessage;
   6 import javax.sound.midi.Sequence;
   7 import javax.sound.midi.ShortMessage;
   8 import javax.sound.midi.Track;
   9
  10 // 一般のトラック（メロディ、ドラム共通）
  11 //
  12 public abstract class AbstractNoteTrackSpec extends AbstractTrackSpec {
  13         public int midiChannel = -1;
  14         public int programNumber = -1;
  15         public int velocity = 64;
  16
  17         public AbstractNoteTrackSpec() {}
  18         public AbstractNoteTrackSpec(int ch) {
  19                 midiChannel = ch;
  20         }
  21         public AbstractNoteTrackSpec(int ch, String name) {
  22                 midiChannel = ch;
  23                 this.name = name;
  24         }
  25         public AbstractNoteTrackSpec(int ch, String name, int programNumber) {
  26                 this(ch,name);
  27                 this.programNumber = programNumber;
  28         }
  29         public AbstractNoteTrackSpec(int ch, String name, int programNumber, int velocity) {
  30                 this(ch,name,programNumber);
  31                 this.velocity = velocity;
  32         }
  33         public Track createTrack( Sequence seq, FirstTrackSpec firstTrackSpec ) {
  34                 Track track = super.createTrack( seq, firstTrackSpec );
  35                 if( programNumber >= 0 ) addProgram( programNumber, 0 );
  36                 return track;
  37         }
  38         public boolean addProgram( int program_no, long tickPos ) {
  39                 ShortMessage shortMsg;
  40                 try {
  41                         (shortMsg = new ShortMessage()).setMessage(ShortMessage.PROGRAM_CHANGE, midiChannel, program_no, 0);
  42                 } catch( InvalidMidiDataException ex ) {
  43                         ex.printStackTrace();
  44                         return false;
  45                 }
  46                 return track.add(new MidiEvent( (MidiMessage)shortMsg, tickPos ));
  47         }
  48         public boolean addNote(long startTickPos, long endTickPos, int noteNumber) {
  49                 return addNote(startTickPos, endTickPos, noteNumber, velocity);
  50         }
  51         public boolean addNote(long startTickPos, long endTickPos, int noteNumber, int velocity) {
  52                 ShortMessage short_msg;
  53                 try {
  54                         (short_msg = new ShortMessage()).setMessage(ShortMessage.NOTE_ON, midiChannel, noteNumber, velocity);
  55                 } catch( InvalidMidiDataException ex ) {
  56                         ex.printStackTrace();
  57                         return false;
  58                 }
  59                 if( ! track.add(new MidiEvent( (MidiMessage)short_msg, startTickPos )) ) return false;
  60                 try {
  61                         (short_msg = new ShortMessage()).setMessage(ShortMessage.NOTE_OFF, midiChannel, noteNumber, velocity);
  62                 } catch( InvalidMidiDataException ex ) {
  63                         ex.printStackTrace();
  64                         return false;
  65                 }
  66                 return track.add( new MidiEvent( (MidiMessage)short_msg, endTickPos ) );
  67         }
  68 }