MidiSystem.getSequencer() returns Audio Device Unavailable
- by ksemeks
I've keep having an exception thrown, on and on.
When i try to make a new Sequencer object, i keep getting the javax.sound.midi.MidiUnavailableException: Audio Device Unavailable exception.
So, here's the code:
import javax.sound.midi.*;
public class MiniMusicPlayer1
{
public static void main(String[] args)
{
try
{
Sequencer sequencer = MidiSystem.getSequencer();
sequencer.open();
Sequence seq = new Sequence(Sequence.PPQ, 4);
Track track = seq.createTrack();
for (int i = 5; i < 61; i += 4)
{
track.add(makeEvent(144, 1, i, 100, i));
track.add(makeEvent(128, 1, i, 100, (i+2)));
}
sequencer.setSequence(seq);
sequencer.setTempoInBPM(220);
sequencer.start();
}
catch (Exception e)
{
e.printStackTrace();
}
}
public static MidiEvent makeEvent(int comd, int chan, int one, int two, int tick)
{
MidiEvent event = null;
try
{
ShortMessage a = new ShortMessage();
a.setMessage(comd, chan, one, two);
event = new MidiEvent(a, tick);
}
catch (Exception e)
{
e.printStackTrace();
}
return event;
}
}
And here's the complete error (at compile):
javax.sound.midi.MidiUnavailableException: Audio Device Unavailable
at com.sun.media.sound.MixerSynth.implOpen(MixerSynth.java:165)
at com.sun.media.sound.AbstractMidiDevice.doOpen(AbstractMidiDevice.java:144)
at com.sun.media.sound.AbstractMidiDevice.openInternal(AbstractMidiDevice.java:134)
at com.sun.media.sound.AbstractMidiDevice.getReceiverReferenceCounting(AbstractMidiDevice.java:339)
at javax.sound.midi.MidiSystem.getReceiver(MidiSystem.java:243)
at javax.sound.midi.MidiSystem.getSequencer(MidiSystem.java:442)
at javax.sound.midi.MidiSystem.getSequencer(MidiSystem.java:348)
at MiniMusicPlayer1.main(MiniMusicPlayer1.java:9)
First i was unable to play MIDI files on my pc, but then i got it to work, so now i can play MIDI files, that's okay.
I tried even to close every process which uses my sound card, but the error is still there.
Anyone can help me?
