com.leff.midi.MidiFile Java Examples
The following examples show how to use
com.leff.midi.MidiFile.
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Example #1
Source File: MidiUtils.java From brailleback with Apache License 2.0 | 6 votes |
private static File writeMidiTrackToTempFile(Context context, MidiTrack noteTrack) { // Always add the default tempo track first. final ArrayList<MidiTrack> tracks = new ArrayList<MidiTrack>(); tracks.add(DEFAULT_TEMPO_TRACK); tracks.add(noteTrack); // Attempt to write the track to a file and return it. try { final File midiDir = new File(context.getCacheDir(), MIDI_TEMP_DIR_NAME); if (!midiDir.exists() && !midiDir.mkdirs()) { return null; } final MidiFile midi = new MidiFile(MidiFile.DEFAULT_RESOLUTION, tracks); final File output = File.createTempFile("talkback", ".mid", midiDir); midi.writeToFile(output); return output; } catch (IOException e) { e.printStackTrace(); return null; } }
Example #2
Source File: MidiFileFromScratch.java From android-midi-lib with MIT License | 4 votes |
public static void main(String[] args) { // 1. Create some MidiTracks MidiTrack tempoTrack = new MidiTrack(); MidiTrack noteTrack = new MidiTrack(); // 2. Add events to the tracks // 2a. Track 0 is typically the tempo map TimeSignature ts = new TimeSignature(); ts.setTimeSignature(4, 4, TimeSignature.DEFAULT_METER, TimeSignature.DEFAULT_DIVISION); Tempo t = new Tempo(); t.setBpm(228); tempoTrack.insertEvent(ts); tempoTrack.insertEvent(t); // 2b. Track 1 will have some notes in it for(int i = 0; i < 80; i++) { int channel = 0, pitch = 1 + i, velocity = 100; NoteOn on = new NoteOn(i * 480, channel, pitch, velocity); NoteOff off = new NoteOff(i * 480 + 120, channel, pitch, 0); noteTrack.insertEvent(on); noteTrack.insertEvent(off); // There is also a utility function for notes that you should use // instead of the above. noteTrack.insertNote(channel, pitch + 2, velocity, i * 480, 120); } // It's best not to manually insert EndOfTrack events; MidiTrack will // call closeTrack() on itself before writing itself to a file // 3. Create a MidiFile with the tracks we created ArrayList<MidiTrack> tracks = new ArrayList<MidiTrack>(); tracks.add(tempoTrack); tracks.add(noteTrack); MidiFile midi = new MidiFile(MidiFile.DEFAULT_RESOLUTION, tracks); // 4. Write the MIDI data to a file File output = new File("exampleout.mid"); try { midi.writeToFile(output); } catch(IOException e) { System.err.println(e); } }
Example #3
Source File: MidiProcessor.java From android-midi-lib with MIT License | 3 votes |
public MidiProcessor(MidiFile input) { mMidiFile = input; mMPQN = Tempo.DEFAULT_MPQN; mPPQ = mMidiFile.getResolution(); mEventsToListeners = new HashMap<Class<? extends MidiEvent>, List<MidiEventListener>>(); mListenersToEvents = new HashMap<MidiEventListener, List<Class<? extends MidiEvent>>>(); mMetronome = new MetronomeTick(new TimeSignature(), mPPQ); this.reset(); }