1 /*
2 * Copyright (c) 2007, 2015, 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.
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22 */
23
24 /* @test
25 @summary Test AudioFloatConverter toFloatArray method
26 @modules java.desktop/com.sun.media.sound
27 */
28
29 import javax.sound.sampled.*;
30
31 import com.sun.media.sound.*;
32
33 public class ToFloatArray {
34
35 public static void main(String[] args) throws Exception {
36 float[] testarray = new float[1024];
37 for (int i = 0; i < 1024; i++) {
38 double ii = i / 1024.0;
39 ii = ii * ii;
40 testarray[i] = (float)Math.sin(10*ii*2*Math.PI);
41 testarray[i] += (float)Math.sin(1.731 + 2*ii*2*Math.PI);
42 testarray[i] += (float)Math.sin(0.231 + 6.3*ii*2*Math.PI);
43 testarray[i] *= 0.3;
44 }
45
46 // Check conversion using PCM_FLOAT
47 for (int big = 0; big < 2; big+=1)
48 for (int bits = 32; bits <= 64; bits+=32) {
49 AudioFormat frm = new AudioFormat(
50 AudioFormat.Encoding.PCM_FLOAT,
51 44100, bits, 1, bits/8,
52 44100, big==1);
53 byte[] buff = new byte[testarray.length * frm.getFrameSize()];
54 float[] testarray2 = new float[testarray.length];
55 AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);
56 conv.toByteArray(testarray, buff);
57 conv.toFloatArray(buff, testarray2);
58 for (int i = 0; i < testarray2.length; i++) {
59 if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
60 throw new RuntimeException("Conversion failed for " + frm +" , arrays not equal enough!\n");
61 }
62 }
63
64 // Check conversion from float2byte and byte2float.
65 for (int big = 0; big < 2; big+=1)
66 for (int signed = 0; signed < 2; signed+=1)
67 for (int bits = 6; bits <= 40; bits+=2) {
68 AudioFormat frm = new AudioFormat(44100, bits, 1, signed==1, big==1);
69 byte[] buff = new byte[testarray.length * frm.getFrameSize()];
70 float[] testarray2 = new float[testarray.length];
71 AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);
72 conv.toByteArray(testarray, buff);
73 conv.toFloatArray(buff, testarray2);
74 for (int i = 0; i < testarray2.length; i++) {
75 if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
76 throw new RuntimeException("Conversion failed for " + frm +" , arrays not equal enough!\n");
77 }
78 }
79
80 // Check big/little
81 for (int big = 0; big < 2; big+=1)
82 for (int signed = 0; signed < 2; signed+=1)
83 for (int bits = 6; bits <= 40; bits+=2) {
84 AudioFormat frm = new AudioFormat(44100, bits, 1, signed==1, big==1);
85 byte[] buff = new byte[testarray.length * frm.getFrameSize()];
86 AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);
87 conv.toByteArray(testarray, buff);
88 byte[] buff2 = new byte[testarray.length * frm.getFrameSize()];
89 int fs = frm.getFrameSize();
90 for (int i = 0; i < buff2.length; i+=fs) {
91 for (int j = 0; j < fs; j++) {
92 buff2[i+(fs-j-1)] = buff[i+j];
93 }
94 }
95 float[] testarray2 = new float[testarray.length];
96 AudioFormat frm2 = new AudioFormat(44100, bits, 1, signed==1, big==0);
97 AudioFloatConverter.getConverter(frm2).toFloatArray(buff2, testarray2);
98 for (int i = 0; i < testarray2.length; i++) {
99 if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
100 {
101 throw new RuntimeException("Conversion failed for " + frm +" to " + frm2 + " , arrays not equal enough!\n");
102 }
103 }
104 }
105
106 // Check signed/unsigned
107 for (int big = 0; big < 2; big+=1)
108 for (int signed = 0; signed < 2; signed+=1)
109 for (int bits = 6; bits <= 40; bits+=2) {
110 AudioFormat frm = new AudioFormat(44100, bits, 1, signed==1, big==1);
111 byte[] b = new byte[testarray.length * frm.getFrameSize()];
112 AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);
113 conv.toByteArray(testarray, b);
114 int fs = frm.getFrameSize();
115 if(big==1)
116 {
117 for(int i=0; i < b.length; i+= fs )
118 b[i] = (b[i] >= 0) ? (byte)(0x80 | b[i]) : (byte)(0x7F & b[i]);
119 }
120 else
121 {
122 for(int i=(0+fs-1); i < b.length; i+= fs )
123 b[i] = (b[i] >= 0) ? (byte)(0x80 | b[i]) : (byte)(0x7F & b[i]);
124 }
125 float[] testarray2 = new float[testarray.length];
126 AudioFormat frm2 = new AudioFormat(44100, bits, 1, signed==0, big==1);
127 AudioFloatConverter.getConverter(frm2).toFloatArray(b, testarray2);
128 for (int i = 0; i < testarray2.length; i++) {
129 if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
130 {
131 throw new RuntimeException("Conversion failed for " + frm +" to " + frm2 + " , arrays not equal enough!\n");
132 }
133 }
134 }
135
136 // Check if conversion 32->24, 24->16, 16->8 result in same float data
137 AudioFormat frm = new AudioFormat(44100, 40, 1, true, true);
138 byte[] b = new byte[testarray.length * frm.getFrameSize()];
139 AudioFloatConverter.getConverter(frm).toByteArray(testarray, b);
140 for (int bits = 6; bits <= 40; bits+=2) {
141 AudioFormat frm2 = new AudioFormat(44100, bits, 1, true, true);
142 byte[] b2 = new byte[testarray.length * frm2.getFrameSize()];
143 int fs1 = frm.getFrameSize();
144 int fs2 = frm2.getFrameSize();
145 int ii = 0;
146 for (int i = 0; i < b.length; i+=fs1)
147 for (int j = 0; j < fs2; j++)
148 b2[ii++] = b[i+j];
149 float[] testarray2 = new float[testarray.length];
150 AudioFloatConverter.getConverter(frm2).toFloatArray(b2, testarray2);
151 for (int i = 0; i < testarray2.length; i++) {
152 if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
153 {
154 throw new RuntimeException("Conversion failed for " + frm +" to " + frm2 + " , arrays not equal enough!\n");
155 }
156 }
157 }
158 }
159
160 }