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package midisequenceextractor;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.sound.midi.InvalidMidiDataException;
import javax.sound.midi.MidiChannel;
import javax.sound.midi.MidiEvent;
import javax.sound.midi.MidiMessage;
import javax.sound.midi.MidiSystem;
import javax.sound.midi.MidiUnavailableException;
import javax.sound.midi.Sequence;
import javax.sound.midi.Sequencer;
import javax.sound.midi.ShortMessage;
import javax.sound.midi.Synthesizer;
import javax.sound.midi.Track;
public class MIDISequenceExtractor {
public static void main(String[] args) throws MidiUnavailableException, InvalidMidiDataException, IOException {
List<Integer> notes = new ArrayList<>();
Synthesizer synthesizer = MidiSystem.getSynthesizer();
synthesizer.open();
MidiChannel midiChannel = synthesizer.getChannels()[0];
Sequence sequence = MidiSystem.getSequence(new File("ThroughTheYears.mid"));
int track_to_use = 3;
Sequencer seq = MidiSystem.getSequencer();
seq.open();
seq.setSequence(sequence);
seq.setTrackSolo(track_to_use, true);
seq.start();
System.out.println("resolution: " + sequence.getResolution());
Map<Long, List<MidiEvent>> events = new HashMap<Long, List<MidiEvent>>();
int maxTracks = sequence.getTracks().length;
System.out.println("Max Tracks:" + maxTracks);
Track track = sequence.getTracks()[track_to_use];
for (int i = 0; i < track.size(); i++) {
MidiEvent me = track.get(i);
Long tick = me.getTick();
List<MidiEvent> list = events.get(tick);
if (list == null) {
list = new ArrayList<MidiEvent>();
events.put(tick, list);
}
list.add(me);
Long tick = 0l;
while (tick <= sequence.getTickLength()) {
List<MidiEvent> list = events.get(tick);
if (list != null) {
for (MidiEvent me : list) {
MidiMessage midiMessage = me.getMessage();
switch (midiMessage.getStatus() & ShortMessage.NOTE_ON) {
case ShortMessage.NOTE_ON:
int note = (int) (midiMessage.getMessage()[1] & 0xff);
int velocity = (int) (midiMessage.getMessage()[2] & 0xff);
midiChannel.noteOn(note, velocity);
//System.out.println("tick: "+ tick + " note_on: " + note);
notes.add(note);
break;
case ShortMessage.NOTE_OFF:
int note2 = (int) (midiMessage.getMessage()[1] & 0xff);
//int velocity2 = (int) (midiMessage.getMessage()[2] & d0xff);
midiChannel.noteOff(note2);
//System.out.println("tick: "+ tick + " note_off: " + note2);
notes.add(254);
break;
}
System.out.println();
}
}
else {
// ignore
notes.add(255);
}
//Thread.sleep(6);
//System.out.println("----------------------");
tick += 8;
}
System.out.println("music size: " + notes.size());
for (int i = 0; i < notes.size(); i++) {
int noteInt = notes.get(i);
String noteStr = "00" + Integer.toHexString(noteInt);
noteStr = noteStr.substring(noteStr.length() - 2, noteStr.length());
noteStr = "0" + noteStr + "h";
if (i % 16 == 0) {
System.out.print("\r\n\tdb ");
}
System.out.print(noteStr + (i % 16 == 15 ? "" : ", "));
}
}
}
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