1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
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7  * published by the Free Software Foundation.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
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17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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22  */
23 
24 import java.io.ByteArrayInputStream;
25 
26 import javax.sound.sampled.AudioFormat;
27 import javax.sound.sampled.AudioInputStream;
28 import javax.sound.sampled.AudioSystem;
29 import javax.sound.sampled.Clip;
30 import javax.sound.sampled.DataLine;
31 import javax.sound.sampled.LineUnavailableException;
32 import javax.sound.sampled.Mixer;
33 
34 /**
35  * @test
36  * @bug 4237703
37  * @summary Check that Clip.getMicrosecondLength() returns correct value.
38  */
39 public class ClipDuration {
40 
run(Mixer m)41     public static int run(Mixer m) {
42         int res=1; // failed
43         int frameCount = 441000; // lets say 10 seconds
44         AudioFormat f = new AudioFormat(44100.0f, 16, 2, true, false);
45         AudioInputStream audioInputStream =
46             new AudioInputStream(new ByteArrayInputStream(new byte[frameCount * f.getFrameSize()]),
47                                  f, frameCount);
48         AudioFormat     format = audioInputStream.getFormat();
49         Clip m_clip = null;
50         try {
51             if (m == null) {
52                 m_clip = (Clip) AudioSystem.getClip();
53             } else {
54                 DataLine.Info   info = new DataLine.Info(Clip.class, format, AudioSystem.NOT_SPECIFIED);
55                 m_clip = (Clip) m.getLine(info);
56             }
57             System.out.println("Got clip: "+m_clip);
58             m_clip.open(audioInputStream);
59             long microseconds=m_clip.getMicrosecondLength();
60             System.out.println("getFrameLength()="+m_clip.getFrameLength()+" frames");
61             System.out.println("getMicrosecondLength()="+microseconds+" us");
62             if (Math.abs(microseconds-10000000)<50) {
63                 System.out.println("->Clip OK");
64                 res=0; // passes if less than 50us error
65             }
66         } catch (LineUnavailableException luae) {
67             System.err.println(luae);
68             res = 3; // line not available, test not failed
69         } catch (Throwable t) {
70             System.out.println("->Exception:"+t);
71             t.printStackTrace();
72             res=2; // exception
73         }
74         if (m_clip != null) {
75             m_clip.close();
76         }
77         return res;
78     }
79 
80 
81 
main(String[] args)82     public static void main(String[] args) throws Exception     {
83         if (isSoundcardInstalled()) {
84             int res=3;
85             res = run(null);
86             Mixer.Info[] infos = AudioSystem.getMixerInfo();
87             for (int i = 0; i<infos.length; i++) {
88                 try {
89                         Mixer m = AudioSystem.getMixer(infos[i]);
90                         int r = run(m);
91                         if (r == 1) res = 1;
92                 } catch (Exception e) {
93                 }
94             }
95             if (res!=1) {
96                 System.out.println("Test passed");
97             } else {
98                 if (res==2) {
99                     System.err.println("Test could not execute: test threw unexpected Exception.");
100                     throw new Exception("Test threw exception");
101                 }
102                 else if (res==3) {
103                     System.err.println("Test could not execute: please install an audio device");
104                     return;
105                 }
106                 throw new Exception("Test returned wrong length");
107             }
108         }
109     }
110 
111     /**
112      * Returns true if at least one soundcard is correctly installed
113      * on the system.
114      */
isSoundcardInstalled()115     public static boolean isSoundcardInstalled() {
116         boolean result = false;
117         try {
118             Mixer.Info[] mixers = AudioSystem.getMixerInfo();
119             if (mixers.length > 0) {
120                 result = AudioSystem.getSourceDataLine(null) != null;
121             }
122         } catch (Exception e) {
123             System.err.println("Exception occured: "+e);
124         }
125         if (!result) {
126             System.err.println("Soundcard does not exist or sound drivers not installed!");
127             System.err.println("This test requires sound drivers for execution.");
128         }
129         return result;
130     }
131 }
132