Send Midi Out through 5 channels

[billyjoker]

Hi i'm starting with your midi library, my issues are if i can load a midi file from assets and send thorugh usb/otg 5 midi channels ?

[kshoji]

Yes. This library can play MIDI files.
This library includes javax.sound.midi porting library.
There is a MidiSystem.getSequencer() method, to get a MIDI sequencer instance.
The sequencer can play SMF files on the app's asset, or on the external directory.

Regards,
Kaoru

[billyjoker]

Hi kshoji i've got send midi out as i wanted, it works fine, but i have another 2 issues:

1- When i open and play a midi file it does not perform any sound. I've verified all this steps:

• No exception handling the midi file.

• Previously i've got play the midi file with winamp and with a DAW.

• I've placed soundbank.gm to directory C:\Program Files\Java\jdk1.7.0_45\lib\audio and C:\Program Files (x86)\Java\jre1.8.0_66\lib\audio

• MidiSystem.getSynthesizer() returns null (i do not know if it is something related with this...)

• I've got play it successfully with MediaPlayer class

• My code:

   private Sequencer openMidiFile()
   {
     try {
      Sequencer mSeqr = MidiSystem.getSequencer();
  
      InputStream in = getAssets().open(MIDI_FILE);
      Sequence mSeq = MidiSystem.getSequence(in);
  
      mSeqr.open();
      mSeqr.setSequence(mSeq);
      mSeqr.start(); //it is supposed this execution will perform the play of the file
  
      return mSeqr;
  } catch (MidiUnavailableException e) {
      e.printStackTrace();
  } catch (InvalidMidiDataException e) {
      e.printStackTrace();
  } catch (IOException e) {
      e.printStackTrace();
  }
  
  return null;
  }
  

2- Second issue: i0ve implemented a timertask to catch the midievents from the sequencer, but it seems that it is not 100% accurated, i'm using 1ms period, What's the best way to achieve this?

Thanks and happy new year!!