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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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package com.sun.media.sound;
import javax.sound.midi.Instrument;
import javax.sound.midi.MidiChannel;
import javax.sound.midi.Patch;
import javax.sound.midi.Soundbank;
import javax.sound.sampled.AudioFormat;
/**
* The model instrument class.
*
* <p>The main methods to override are:<br>
* getPerformer, getDirector, getChannelMixer.
*
* <p>Performers are used to define what voices which will
* playback when using the instrument.<br>
*
* ChannelMixer is used to add channel-wide processing
* on voices output or to define non-voice oriented instruments.<br>
*
* Director is used to change how the synthesizer
* chooses what performers to play on midi events.
*
* @author Karl Helgason
*/
public abstract class ModelInstrument extends Instrument {
protected ModelInstrument(Soundbank soundbank, Patch patch, String name,
Class<?> dataClass) {
super(soundbank, patch, name, dataClass);
}
public ModelDirector getDirector(ModelPerformer[] performers,
MidiChannel channel, ModelDirectedPlayer player) {
return new ModelStandardIndexedDirector(performers, player);
}
public ModelPerformer[] getPerformers() {
return new ModelPerformer[0];
}
public ModelChannelMixer getChannelMixer(MidiChannel channel,
AudioFormat format) {
return null;
}
// Get General MIDI 2 Alias patch for this instrument.
public final Patch getPatchAlias() {
Patch patch = getPatch();
int program = patch.getProgram();
int bank = patch.getBank();
if (bank != 0)
return patch;
boolean percussion = false;
if (getPatch() instanceof ModelPatch)
percussion = ((ModelPatch)getPatch()).isPercussion();
if (percussion)
return new Patch(0x78 << 7, program);
else
return new Patch(0x79 << 7, program);
}
// Return name of all the keys.
// This information is generated from ModelPerformer.getName()
// returned from getPerformers().
public final String[] getKeys() {
String[] keys = new String[128];
for (ModelPerformer performer : getPerformers()) {
for (int k = performer.getKeyFrom(); k <= performer.getKeyTo(); k++) {
if (k >= 0 && k < 128 && keys[k] == null) {
String name = performer.getName();
if (name == null)
name = "untitled";
keys[k] = name;
}
}
}
return keys;
}
// Return what channels this instrument will probably response
// on General MIDI synthesizer.
public final boolean[] getChannels() {
boolean percussion = false;
if (getPatch() instanceof ModelPatch)
percussion = ((ModelPatch)getPatch()).isPercussion();
// Check if instrument is percussion.
if (percussion) {
boolean[] ch = new boolean[16];
for (int i = 0; i < ch.length; i++)
ch[i] = false;
ch[9] = true;
return ch;
}
// Check if instrument uses General MIDI 2 default banks.
int bank = getPatch().getBank();
if (bank >> 7 == 0x78 || bank >> 7 == 0x79) {
boolean[] ch = new boolean[16];
for (int i = 0; i < ch.length; i++)
ch[i] = true;
return ch;
}
boolean[] ch = new boolean[16];
for (int i = 0; i < ch.length; i++)
ch[i] = true;
ch[9] = false;
return ch;
}
}