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/Users/lyon/j4p/src/sound/Utils.java
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1 package sound;
2
3 /*
4 * Open Source Software by http://www.Docjava.com
5 * programmer: D. Lyon
6 * e-mail: lyon@docjava.com
7 * Date: Apr 29, 2002
8 * Time: 12:35:09 PM
9 */
10
11 import sound.soundDemo.CapturePlaybackPanel;
12
13 import javax.sound.midi.MidiChannel;
14 import javax.sound.midi.MidiSystem;
15 import javax.sound.midi.MidiUnavailableException;
16 import javax.sound.midi.Synthesizer;
17 import javax.sound.sampled.AudioFormat;
18 import java.util.Vector;
19 import java.awt.Container;
20 import java.awt.BorderLayout;
21
22 import gui.ClosableJFrame;
23
24 public class Utils {
25 private static MidiChannel channels[] = null;
26 private static Synthesizer synth = null;
27
28 public static void play(int ia[], int vel, int dur) {
29 for (int i = 0; i < ia.length; i++)
30 play(ia[i], vel, dur);
31 }
32
33 public static void playThread(final int ia[],
34 final int vel,
35 final int dur) {
36 Runnable r = new Runnable() {
37 public void run() {
38 for (int i = 0; i < ia.length; i++)
39 play(ia[i], vel, dur);
40 }
41 };
42 Thread t = new Thread(r);
43 t.start();
44 }
45
46 public static void play(int ia[], int dur) {
47 for (int i = 0; i < ia.length; i++)
48 play(ia[i], 127, dur);
49 }
50
51 public static int[] transpose(int ia[], int bias) {
52 int ans[] = new int[ia.length];
53 for (int i = 0; i < ans.length; i++)
54 ans[i] = ia[i] + bias;
55 return ans;
56 }
57
58 public static void print(int ia[]) {
59 for (int i = 0; i < ia.length; i++)
60 System.out.println(ia[i]);
61 }
62
63 public static void play(int nn) {
64 play(nn, 127, 20);
65 }
66
67 public static void play(int nn, int dur) {
68 play(nn, 127, dur);
69 }
70
71 public static void play(int nn, int vel, int dur) {
72 play(getSynthesizer(), nn, vel, dur);
73 }
74
75 public static void play(Synthesizer synth, int nNoteNumber,
76 int nVelocity, int nDuration) {
77 noteOn(nNoteNumber, nVelocity);
78 if (nDuration < 0) return;
79 sleep(nDuration);
80 noteOff(nNoteNumber);
81 System.out.println("synthesizer=" + synth);
82 }
83
84 public static void noteOff(int nNoteNumber) {
85 channels[0].noteOff(nNoteNumber);
86 }
87
88 public static void noteOn(int nNoteNumber, int nVelocity) {
89 channels[0].noteOn(nNoteNumber, nVelocity);
90 }
91
92 private static void sleep(int nDuration) {
93 try {
94 Thread.sleep(nDuration);
95 } catch (InterruptedException e) {
96 }
97 }
98
99 public static Synthesizer getSynthesizer() {
100 Synthesizer synth = initSynth();
101 openSynth(synth);
102 channels = initChannel(synth);
103 return synth;
104 }
105
106 private static Synthesizer initSynth() {
107 if (synth != null) return synth;
108 try {
109 synth = MidiSystem.getSynthesizer();
110 } catch (MidiUnavailableException e) {
111 }
112 return synth;
113 }
114
115 private static void openSynth(Synthesizer synth) {
116 try {
117 synth.open();
118 } catch (MidiUnavailableException e) {
119 e.printStackTrace();
120 System.exit(1);
121 }
122 }
123 public static void main(String[] args) {
124 ClosableJFrame cf = new ClosableJFrame();
125 Container c = cf.getContentPane();
126 c.setLayout(new BorderLayout());
127 CapturePlaybackPanel cpp = new CapturePlaybackPanel();
128 c.add(cpp,BorderLayout.CENTER);
129 cf.setSize(600,400);
130 cf.show();
131 //Vector graphicLineData = cpp.getGraphicLineData();
132 }
133
134 private static MidiChannel[] initChannel(Synthesizer synth) {
135 MidiChannel[] channels = synth.getChannels();
136 return channels;
137 }
138
139 public static double[] getDoubleData(AudioFormat format,
140 byte[] audioBytes) {
141 int data16[] = get16BitAudioData(format, audioBytes);
142 double d[] = new double[data16.length];
143 for (int i = 0; i < d.length; i++)
144 d[i] = data16[i] / 32768.0;
145 return d;
146 }
147
148 public static int[] get16BitAudioData(AudioFormat format,
149 byte[] audioBytes) {
150 int[] audioData = new int[audioBytes.length];
151 if (format.getSampleSizeInBits() == 16) {
152 int nlengthInSamples = audioBytes.length / 2;
153 audioData = new int[nlengthInSamples];
154 if (format.isBigEndian()) {
155 for (int i = 0; i < nlengthInSamples; i++) {
156 /* First byte is MSB (high order) */
157 int MSB = (int) audioBytes[2 * i];
158 /* Second byte is LSB (low order) */
159 int LSB = (int) audioBytes[2 * i + 1];
160 audioData[i] = MSB << 8 | (255 & LSB);
161 }
162 } else {
163 for (int i = 0; i < nlengthInSamples; i++) {
164 /* First byte is LSB (low order) */
165 int LSB = (int) audioBytes[2 * i];
166 /* Second byte is MSB (high order) */
167 int MSB = (int) audioBytes[2 * i + 1];
168 audioData[i] = MSB << 8 | (255 & LSB);
169 }
170 }
171 } else if (format.getSampleSizeInBits() == 8) {
172 int nlengthInSamples = audioBytes.length;
173 audioData = new int[nlengthInSamples];
174 if (format.getEncoding().toString().startsWith("PCM_SIGN")) {
175 for (int i = 0; i < audioBytes.length; i++) {
176 audioData[i] = audioBytes[i];
177 }
178 } else {
179 for (int i = 0; i < audioBytes.length; i++) {
180 audioData[i] = audioBytes[i] - 128;
181 }
182 }
183 }
184 return audioData;
185 }
186
187 public static void echo(double[] linearSamples) {
188 int ECHO_NUMBER = 4;
189 double DECAY = 0.5;
190 echo(ECHO_NUMBER, DECAY, linearSamples);
191 }
192
193 public static void echo(int numberOfEchos, double decay, double[] linearSamples) {
194 int n = linearSamples.length;
195 int numTimes = numberOfEchos + 1;
196 double currDecay = 1.0;
197 short sample, newSample;
198 double[] newSamples = new double[n * numTimes];
199 for (int j = 0; j < numTimes; j++) {
200 for (int i = 0; i < n; i++) // copy the sound's bytes
201 newSamples[i + (n * j)] =
202 linearSamples[i] * currDecay;
203 currDecay *= decay;
204 }
205 linearSamples = newSamples;
206 UlawCodec ulc = new UlawCodec(linearSamples);
207 ulc.play();
208 }
209
210 public static AudioFormat get8khzMono8Format() {
211 float sampleRate = 8000.0F;
212 //8000,11025,16000,22050,44100
213 int sampleSizeInBits = 8;
214 //8,16
215 int channels = 1;
216 //1,2
217 // use signed if 16 bit, otherwise use
218 // unsigned
219 boolean signed = false;
220 //true,false
221 boolean bigEndian = false;
222 //true,false
223 return new AudioFormat(sampleRate,
224 sampleSizeInBits,
225 channels,
226 signed,
227 bigEndian);
228 }//end get8khzMono8Format
229 }
230