1 /*
2 * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved.
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
6 * under the terms of the GNU General Public License version 2 only, as
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
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /* @test
25 @summary Test ModelByteBufferWavetable set8BitExtensionBuffer method */
26
27 import java.io.ByteArrayOutputStream;
28
29 import javax.sound.sampled.*;
30
31 import com.sun.media.sound.*;
32
33 public class Set8BitExtensionBuffer {
34
35 static float[] testarray;
36 static byte[] test_byte_array;
37 static byte[] test_byte_array_8ext;
38 static AudioFormat format = new AudioFormat(44100, 16, 1, true, false);
39 static AudioFormat format24 = new AudioFormat(44100, 24, 1, true, false);
40 static ModelByteBuffer buffer;
41 static ModelByteBuffer buffer_wave;
42 static ModelByteBuffer buffer8;
43 static ModelByteBuffer buffer16_8;
44 static ModelByteBuffer buffer24;
45
46 static void setUp() throws Exception {
47 testarray = new float[1024];
48 for (int i = 0; i < 1024; i++) {
49 double ii = i / 1024.0;
50 ii = ii * ii;
51 testarray[i] = (float)Math.sin(10*ii*2*Math.PI);
52 testarray[i] += (float)Math.sin(1.731 + 2*ii*2*Math.PI);
53 testarray[i] += (float)Math.sin(0.231 + 6.3*ii*2*Math.PI);
54 testarray[i] *= 0.3;
55 }
56 test_byte_array = new byte[testarray.length*2];
57 AudioFloatConverter.getConverter(format).toByteArray(testarray, test_byte_array);
58 buffer = new ModelByteBuffer(test_byte_array);
59
60 byte[] test_byte_array2 = new byte[testarray.length*3];
61 buffer24 = new ModelByteBuffer(test_byte_array2);
62 test_byte_array_8ext = new byte[testarray.length];
63 byte[] test_byte_array_8_16 = new byte[testarray.length*2];
64 AudioFloatConverter.getConverter(format24).toByteArray(testarray, test_byte_array2);
65 int ix = 0;
66 int x = 0;
67 for (int i = 0; i < test_byte_array_8ext.length; i++) {
68 test_byte_array_8ext[i] = test_byte_array2[ix++];
69 test_byte_array_8_16[x++] = test_byte_array2[ix++];
70 test_byte_array_8_16[x++] = test_byte_array2[ix++];
71 }
72 buffer16_8 = new ModelByteBuffer(test_byte_array_8_16);
73 buffer8 = new ModelByteBuffer(test_byte_array_8ext);
74
75 AudioInputStream ais = new AudioInputStream(buffer.getInputStream(), format, testarray.length);
76 ByteArrayOutputStream baos = new ByteArrayOutputStream();
77 AudioSystem.write(ais, AudioFileFormat.Type.WAVE, baos);
78 buffer_wave = new ModelByteBuffer(baos.toByteArray());
79 }
80
81 static float compare(float[] a, float[] b)
82 {
83 float ac_error = 0;
84 int counter = 0;
85 for (int i = 0; i < a.length; i++) {
86 ac_error += Math.abs(a[i] - b[i]);
87 counter++;
88 }
89 return ac_error / ((float)counter);
90
91 }
92
93 public static void main(String[] args) throws Exception {
94
95 setUp();
96
97 ModelByteBufferWavetable wavetable = new ModelByteBufferWavetable(buffer16_8,format,10f);
98 float[] f1 = new float[testarray.length];
99 float[] f2 = new float[testarray.length];
100 wavetable.openStream().read(f1);
101 wavetable.set8BitExtensionBuffer(buffer8);
102 if(wavetable.get8BitExtensionBuffer() != buffer8)
103 throw new RuntimeException("wavetable.get8BitExtensionBuffer() incorrect!");
104 wavetable.openStream().read(f2);
105 // f2 should have more accurity than f1,
106 // about 256 times more, or 8 bits
107 float spec1 = compare(f1, testarray);
108 float spec2 = compare(f2, testarray);
109 if((spec1/spec2) <= 200)
110 throw new RuntimeException("(spec1/spec2) <= 200!");
111
112
113 }
114
115
116
117 }