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Viewing changes to TuxGuitar-midi/src/org/herac/tuxguitar/io/midi/MidiMessageUtils.java

  • Committer: Bazaar Package Importer
  • Author(s): Philippe Coval
  • Date: 2008-06-19 00:30:30 UTC
  • mto: (5.1.2 sid)
  • mto: This revision was merged to the branch mainline in revision 3.
  • Revision ID: james.westby@ubuntu.com-20080619003030-h719szrhsngou7c6
Tags: upstream-1.0
Import upstream version 1.0

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TuxGuitar-midi/src/org/herac/tuxguitar/io/midi/MidiMessageUtils.java
 
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package org.herac.tuxguitar.io.midi;
 
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import org.herac.tuxguitar.io.midi.base.MidiMessage;
 
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import org.herac.tuxguitar.song.models.TGTimeSignature;
 
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public class MidiMessageUtils {
 
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        public static final byte TICK_MOVE = 0x01;
 
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        private static int fixValue(int value){
 
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                int fixedValue = value;
 
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                fixedValue = Math.min(fixedValue,127);
 
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                fixedValue = Math.max(fixedValue,0);
 
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                return fixedValue;
 
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        }
 
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        private static int fixChannel(int channel){
 
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                int fixedChannel = channel;
 
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                fixedChannel = Math.min(fixedChannel,15);
 
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                fixedChannel = Math.max(fixedChannel,0);
 
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                return fixedChannel;
 
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        }
 
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        public static MidiMessage noteOn(int channel,int note,int velocity){
 
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                return MidiMessage.shortMessage(MidiMessage.NOTE_ON, fixChannel(channel), fixValue(note), fixValue(velocity));
 
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        }
 
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        public static MidiMessage noteOff(int channel,int note,int velocity){
 
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                return MidiMessage.shortMessage(MidiMessage.NOTE_OFF, fixChannel(channel), fixValue(note), fixValue(velocity));
 
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        }
 
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        public static MidiMessage controlChange(int channel,int controller,int value){
 
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                return MidiMessage.shortMessage(MidiMessage.CONTROL_CHANGE, fixChannel(channel), fixValue(controller), fixValue(value));
 
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        }
 
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        public static MidiMessage programChange(int channel,int instrument){
 
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                return MidiMessage.shortMessage(MidiMessage.PROGRAM_CHANGE, fixChannel(channel), fixValue(instrument));
 
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        }
 
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        public static MidiMessage pitchBend(int channel,int value){
 
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                return MidiMessage.shortMessage(MidiMessage.PITCH_BEND, fixChannel(channel), 0, fixValue(value));
 
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        }
 
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        public static MidiMessage systemReset(){
 
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                return MidiMessage.shortMessage(MidiMessage.SYSTEM_RESET);
 
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        }
 
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        public static MidiMessage tempoInUSQ(int usq){
 
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                MidiMessage message = new MidiMessage(MidiMessage.TYPE_META, MidiMessage.TEMPO_CHANGE);
 
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                message.setData(new byte[]{(byte)((usq >> 16) & 0xff),(byte)((usq >> 8) & 0xff),(byte)((usq) & 0xff) });
 
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                //message.setData(new byte[]{(byte)((usq >> 16) & 0x00FF),(byte)((usq >> 8) & 0x00FF),(byte)((usq) & 0x00FF) });
 
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                return message;
 
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        }
 
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        public static MidiMessage timeSignature(TGTimeSignature ts){
 
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                MidiMessage message = new MidiMessage(MidiMessage.TYPE_META, MidiMessage.TIME_SIGNATURE_CHANGE);
 
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                message.setData(new byte[]{  (byte)ts.getNumerator(),(byte)ts.getDenominator().getIndex(),(byte)(96 / ts.getDenominator().getValue()),8 });
 
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                return message;
 
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        }
 
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        public static MidiMessage endOfTrack(){
 
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                return MidiMessage.metaMessage(47,new byte[]{});
 
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        }
 
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}
 
 
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