diff options
Diffstat (limited to 'jeu-test/Lemmini/0.84/src/Game/MidiMusic.java')
| -rw-r--r-- | jeu-test/Lemmini/0.84/src/Game/MidiMusic.java | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/jeu-test/Lemmini/0.84/src/Game/MidiMusic.java b/jeu-test/Lemmini/0.84/src/Game/MidiMusic.java new file mode 100644 index 0000000..4906faf --- /dev/null +++ b/jeu-test/Lemmini/0.84/src/Game/MidiMusic.java @@ -0,0 +1,135 @@ +package Game;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+
+import javax.sound.midi.InvalidMidiDataException;
+import javax.sound.midi.MetaEventListener;
+import javax.sound.midi.MetaMessage;
+import javax.sound.midi.MidiChannel;
+import javax.sound.midi.MidiSystem;
+import javax.sound.midi.MidiUnavailableException;
+import javax.sound.midi.Sequence;
+import javax.sound.midi.Sequencer;
+import javax.sound.midi.Synthesizer;
+
+/*
+ * Copyright 2009 Volker Oth
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Class to play Midi music.
+ *
+ * @author Volker Oth
+ */
+public class MidiMusic {
+
+ /** Midi sequencer */
+ private Sequencer sequencer;
+ /** flag: initialization is finished and midi file can be played */
+ private boolean canPlay;
+
+ /**
+ * Constructor.
+ * @param fName file name
+ * @throws ResourceException
+ * @throws LemmException
+ */
+ public MidiMusic(final String fName) throws ResourceException, LemmException {
+ try {
+ FileInputStream f = new FileInputStream(Core.findResource(fName));
+ canPlay = false;
+ sequencer = MidiSystem.getSequencer();
+ if (sequencer == null) {
+ throw new LemmException("Midi not supported");
+ } else {
+ // Acquire resources and make operational.
+ sequencer.open();
+ }
+ Sequence mySeq = MidiSystem.getSequence(f);
+ if (sequencer != null) {
+ setGain(Music.getGain());
+ sequencer.setSequence(mySeq);
+ canPlay = true;
+ sequencer.addMetaEventListener(new MetaEventListener() {
+ public void meta(MetaMessage event) {
+ int type = event.getType();
+ //System.out.println("midi message: "+type+" "+event.toString());
+ if (type == 47) {
+ sequencer.setTickPosition(0);
+ sequencer.start();
+ }
+ }
+ });
+ }
+ } catch (MidiUnavailableException ex) {
+ throw new LemmException("Midi not supported");
+ } catch (InvalidMidiDataException ex) {
+ throw new ResourceException(fName+" (Invalid midi data)");
+ } catch (FileNotFoundException ex) {
+ throw new ResourceException(fName);
+ } catch (IOException ex) {
+ throw new ResourceException(fName+" (IO exception)");
+ }
+
+ }
+
+ /**
+ * Play current midi file.
+ */
+ public void play() {
+ if (canPlay)
+ sequencer.start();
+ }
+
+ /**
+ * Stop current midi file.
+ */
+ public void stop() {
+ if (canPlay)
+ sequencer.stop();
+ }
+
+ /**
+ * Close current midi file.
+ */
+ public void close() {
+ stop();
+ if (sequencer != null)
+ sequencer.close();
+ }
+
+ /**
+ * Set gain (volume) of midi output
+ * @param gn gain factor: 0.0 (off) .. 1.0 (full volume)
+ */
+ public void setGain(double gn) {
+ double gain;
+ if (gn > 1.0)
+ gain = 1.0;
+ else if (gn < 0)
+ gain = 0;
+ else
+ gain = gn;
+ if (sequencer != null && sequencer instanceof Synthesizer) {
+ Synthesizer synthesizer = (Synthesizer)sequencer;
+ MidiChannel[] channels = synthesizer.getChannels();
+
+ for (int i=0; i<channels.length; i++) {
+ channels[i].controlChange(7, (int)(gain * 127.0));
+ }
+ }
+ }
+}
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