jm.gui.cpn.JmMidiPlayer Maven / Gradle / Ivy
/*
*
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// GPL code for jMusic CPN.
// Written by Al Christians ([email protected]).
// Copyright 2002, Trillium Resources Corporation, Oregon's
// leading provider of unvarnished software.
package jm.gui.cpn;
import java.io.*;
import javax.sound.midi.*;
// This class prints quite a few diagnostics.
// This is because the true nature of Midi devices
// is a deep mystery.
public class JmMidiPlayer extends OutputStream {
private Sequencer sequencer;
private Transmitter transmitter;
private Receiver receiver;
private MidiDevice synthesizer;
ByteArrayOutputStream os;
private static MidiDevice getSynthesizer()
throws MidiUnavailableException {
MidiDevice.Info[] devsInfo
= MidiSystem.getMidiDeviceInfo();
MidiDevice.Info devInfo;
MidiDevice dev;
dev = null;
boolean success;
success = false;
for( int i = 0; i < devsInfo.length; ++i) {
if ( !success ) {
try {
devInfo = devsInfo[i-1];
System.out.print(devInfo.toString());
System.out.print( " Getting Info ");
dev = MidiSystem.getMidiDevice(devInfo);
if (!(dev instanceof Sequencer)) {
System.out.print( " Opening ");
success = true;
System.out.println( " Opened");
}
else {
System.out.println(
" Not a Sequencer");
}
}
catch(Throwable e) {
System.out.println(
" Exception " + e.getMessage() );
}
}
}
if (success) {
return dev;
}
else {
System.out.println(
"No Synthesizer Device Found" );
throw new MidiUnavailableException(
"No Synthesizer Device Found" );
}
}
public JmMidiPlayer() throws MidiUnavailableException {
//System.out.println("Getting Sequencer");
sequencer = MidiSystem.getSequencer();
//System.out.println("Getting Synthesizer");
synthesizer = JmMidiPlayer.getSynthesizer();
//System.out.println("Getting Transmitter");
transmitter = sequencer.getTransmitter();
//System.out.println("Getting Receiver");
receiver = synthesizer.getReceiver();
//System.out.println("Connecting Receiver");
transmitter.setReceiver(receiver);
sequencer.open();
if (sequencer.isOpen()) {
//System.out.println("Sequencer is Open" );
}
else {
//System.out.println("Sequencer is Not Open" );
}
os = new ByteArrayOutputStream();
//System.out.println("End of Midi Construction");
MidiDevice.Info synthInfo = synthesizer.getDeviceInfo();
//System.out.println(
// "Synthesizer =" + synthInfo.toString()
//);
MidiDevice.Info seqInfo = sequencer.getDeviceInfo();
//System.out.println(
// "Sequencer =" + seqInfo.toString()
// );
MidiDevice.Info[] devsInfo
= MidiSystem.getMidiDeviceInfo();
MidiDevice.Info devInfo;
MidiDevice dev;
for( int i=0; i < devsInfo.length; ++i) {
devInfo = devsInfo[i];
System.out.print(devInfo.toString());
try {
dev = MidiSystem.getMidiDevice(devInfo);
//System.out.println( " Available");
}
catch(MidiUnavailableException e) {
System.out.println( " Unavailable");
}
}
if (sequencer.isOpen()) {
//System.out.println("Sequencer is Still Open" );
}
else {
// System.out.println("Sequencer is Not Open" );
}
}
public void write(int b) throws IOException {
byte[] bytes = new byte[1];
bytes[0] = (new Integer(b)).byteValue();
write( bytes );
}
public void write(byte[] b) throws IOException {
os.write( b );
}
public void play() {
try {
ByteArrayInputStream is
= new ByteArrayInputStream(os.toByteArray());
//System.out.println("Creating Sequence");
Sequence midiSeq = MidiSystem.getSequence(is);
//System.out.println("Setting Sequence");
if (sequencer.isOpen()) {
//System.out.println("Sequencer is Still Open" );
}
else {
//System.out.println("Sequencer is Not Open" );
sequencer.open();
//System.out.println("Re-Opened" );
}
sequencer.setSequence(midiSeq);
//System.out.println("Starting Sequencer");
sequencer.start();
while(sequencer.isRunning()) {
try{
Thread.sleep(100);
} catch (InterruptedException e) {}
}
//System.out.println("Stopping Sequencer");
sequencer.stop();
//System.out.println("Sequencer Stopped");
}
catch ( InvalidMidiDataException e) {
System.out.println(
"Bad Midi Data " + e.getMessage());
}
catch ( MidiUnavailableException e) {
System.out.println(
"Unable to Re-Open Sequencer " +
e.getMessage());
}
catch ( IOException e) {
System.out.println(
"IO Exception in Midi " + e.getMessage());
}
//System.out.println("End of Play");
}
public void close() {
sequencer.close();
}
}
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