1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/*
* Copyright 2010 Phil Burk, Mobileer Inc
*
* 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.
*/
package com.jsyn.examples;
import java.awt.GridLayout;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import javax.swing.JApplet;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import com.jsyn.JSyn;
import com.jsyn.Synthesizer;
import com.jsyn.data.FloatSample;
import com.jsyn.devices.AudioDeviceFactory;
import com.jsyn.ports.QueueDataCommand;
import com.jsyn.swing.DoubleBoundedRangeModel;
import com.jsyn.swing.DoubleBoundedRangeSlider;
import com.jsyn.swing.JAppletFrame;
import com.jsyn.swing.PortControllerFactory;
import com.jsyn.unitgen.LineOut;
import com.jsyn.unitgen.VariableRateDataReader;
import com.jsyn.unitgen.VariableRateMonoReader;
import com.jsyn.unitgen.VariableRateStereoReader;
import com.jsyn.util.SampleLoader;
/**
* Play a sample from a WAV file using JSyn. Use a crossfade to play a loop at an arbitrary
* position.
*
* @author Phil Burk (C) 2010 Mobileer Inc
*/
public class PlaySampleCrossfade extends JApplet {
private static final double LOOP_START_FRACTION = 0.2;
private Synthesizer synth;
private VariableRateDataReader samplePlayer;
private LineOut lineOut;
private FloatSample sample;
private DoubleBoundedRangeModel rangeModelSize;
private DoubleBoundedRangeModel rangeModelCrossfade;
private int loopStartFrame;
@Override
public void init() {
URL sampleFile;
try {
sampleFile = new URL("http://www.softsynth.com/samples/Clarinet.wav");
} catch (MalformedURLException e2) {
e2.printStackTrace();
return;
}
synth = JSyn.createSynthesizer(AudioDeviceFactory.createAudioDeviceManager(true));
try {
// Add an output mixer.
synth.add(lineOut = new LineOut());
// Load the sample and display its properties.
SampleLoader.setJavaSoundPreferred(false);
sample = SampleLoader.loadFloatSample(sampleFile);
System.out.println("Sample has: channels = " + sample.getChannelsPerFrame());
System.out.println(" frames = " + sample.getNumFrames());
System.out.println(" rate = " + sample.getFrameRate());
System.out.println(" loopStart = " + sample.getSustainBegin());
System.out.println(" loopEnd = " + sample.getSustainEnd());
if (sample.getChannelsPerFrame() == 1) {
synth.add(samplePlayer = new VariableRateMonoReader());
samplePlayer.output.connect(0, lineOut.input, 0);
} else if (sample.getChannelsPerFrame() == 2) {
synth.add(samplePlayer = new VariableRateStereoReader());
samplePlayer.output.connect(0, lineOut.input, 0);
samplePlayer.output.connect(1, lineOut.input, 1);
} else {
throw new RuntimeException("Can only play mono or stereo samples.");
}
samplePlayer.rate.set(sample.getFrameRate());
} catch (IOException e1) {
e1.printStackTrace();
}
// Start at arbitrary position near beginning of sample.
loopStartFrame = (int) (sample.getNumFrames() * LOOP_START_FRACTION);
// Arrange the faders in a stack.
setLayout(new GridLayout(0, 1));
samplePlayer.rate.setup(4000.0, sample.getFrameRate(), sample.getFrameRate() * 2.0);
add(PortControllerFactory.createExponentialPortSlider(samplePlayer.rate));
// Use fader to select arbitrary loop size.
rangeModelSize = new DoubleBoundedRangeModel("LoopSize", 10000, 0.01,
(1.0 - LOOP_START_FRACTION), 0.5);
rangeModelSize.addChangeListener(new ChangeListener() {
@Override
public void stateChanged(ChangeEvent e) {
queueNewLoop();
}
});
add(new DoubleBoundedRangeSlider(rangeModelSize, 3));
// Use fader to set the size of the crossfade region.
rangeModelCrossfade = new DoubleBoundedRangeModel("Crossfade", 1000, 0.0, 1000.0, 0.0);
rangeModelCrossfade.addChangeListener(new ChangeListener() {
@Override
public void stateChanged(ChangeEvent e) {
queueNewLoop();
}
});
add(new DoubleBoundedRangeSlider(rangeModelCrossfade, 3));
validate();
}
private void queueNewLoop() {
int loopSize = (int) (sample.getNumFrames() * rangeModelSize.getDoubleValue());
if ((loopStartFrame + loopSize) > sample.getNumFrames()) {
loopSize = sample.getNumFrames() - loopStartFrame;
}
int crossFadeSize = (int) (rangeModelCrossfade.getDoubleValue());
// For complex queuing operations, create a command and then customize it.
QueueDataCommand command = samplePlayer.dataQueue.createQueueDataCommand(sample,
loopStartFrame, loopSize);
command.setNumLoops(-1);
command.setSkipIfOthers(true);
command.setCrossFadeIn(crossFadeSize);
System.out.println("Queue: " + loopStartFrame + ", #" + loopSize + ", X=" + crossFadeSize);
synth.queueCommand(command);
}
@Override
public void start() {
// Start synthesizer using default stereo output at 44100 Hz.
synth.start();
// Start the LineOut. It will pull data from the oscillator.
lineOut.start();
// Queue attack portion of sample.
samplePlayer.dataQueue.queue(sample, 0, loopStartFrame);
queueNewLoop();
}
@Override
public void stop() {
synth.stop();
synth.stop();
}
/* Can be run as either an application or as an applet. */
public static void main(String args[]) {
PlaySampleCrossfade applet = new PlaySampleCrossfade();
JAppletFrame frame = new JAppletFrame("PlaySampleCrossfade", applet);
frame.setSize(440, 300);
frame.setVisible(true);
frame.test();
}
}
|
