1 /*
2 * Copyright (c) 2007, 2013, 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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20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /* @test
25 @summary Test AudioFloatConverter toFloatArray method */
26
27 import javax.sound.sampled.*;
28
29 import com.sun.media.sound.*;
30
31 public class ToFloatArray {
32
33 public static void main(String[] args) throws Exception {
34 float[] testarray = new float[1024];
35 for (int i = 0; i < 1024; i++) {
36 double ii = i / 1024.0;
37 ii = ii * ii;
38 testarray[i] = (float)Math.sin(10*ii*2*Math.PI);
39 testarray[i] += (float)Math.sin(1.731 + 2*ii*2*Math.PI);
40 testarray[i] += (float)Math.sin(0.231 + 6.3*ii*2*Math.PI);
41 testarray[i] *= 0.3;
42 }
43
44 // Check conversion using PCM_FLOAT
45 for (int big = 0; big < 2; big+=1)
46 for (int bits = 32; bits <= 64; bits+=32) {
47 AudioFormat frm = new AudioFormat(
48 AudioFormat.Encoding.PCM_FLOAT,
49 44100, bits, 1, bits/8,
50 44100, big==1);
51 byte[] buff = new byte[testarray.length * frm.getFrameSize()];
52 float[] testarray2 = new float[testarray.length];
53 AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);
54 conv.toByteArray(testarray, buff);
55 conv.toFloatArray(buff, testarray2);
56 for (int i = 0; i < testarray2.length; i++) {
57 if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
58 throw new RuntimeException("Conversion failed for " + frm +" , arrays not equal enough!\n");
59 }
60 }
61
62 // Check conversion from float2byte and byte2float.
63 for (int big = 0; big < 2; big+=1)
64 for (int signed = 0; signed < 2; signed+=1)
65 for (int bits = 6; bits <= 40; bits+=2) {
66 AudioFormat frm = new AudioFormat(44100, bits, 1, signed==1, big==1);
67 byte[] buff = new byte[testarray.length * frm.getFrameSize()];
68 float[] testarray2 = new float[testarray.length];
69 AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);
70 conv.toByteArray(testarray, buff);
71 conv.toFloatArray(buff, testarray2);
72 for (int i = 0; i < testarray2.length; i++) {
73 if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
74 throw new RuntimeException("Conversion failed for " + frm +" , arrays not equal enough!\n");
75 }
76 }
77
78 // Check big/little
79 for (int big = 0; big < 2; big+=1)
80 for (int signed = 0; signed < 2; signed+=1)
81 for (int bits = 6; bits <= 40; bits+=2) {
82 AudioFormat frm = new AudioFormat(44100, bits, 1, signed==1, big==1);
83 byte[] buff = new byte[testarray.length * frm.getFrameSize()];
84 AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);
85 conv.toByteArray(testarray, buff);
86 byte[] buff2 = new byte[testarray.length * frm.getFrameSize()];
87 int fs = frm.getFrameSize();
88 for (int i = 0; i < buff2.length; i+=fs) {
89 for (int j = 0; j < fs; j++) {
90 buff2[i+(fs-j-1)] = buff[i+j];
91 }
92 }
93 float[] testarray2 = new float[testarray.length];
94 AudioFormat frm2 = new AudioFormat(44100, bits, 1, signed==1, big==0);
95 AudioFloatConverter.getConverter(frm2).toFloatArray(buff2, testarray2);
96 for (int i = 0; i < testarray2.length; i++) {
97 if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
98 {
99 throw new RuntimeException("Conversion failed for " + frm +" to " + frm2 + " , arrays not equal enough!\n");
100 }
101 }
102 }
103
104 // Check signed/unsigned
105 for (int big = 0; big < 2; big+=1)
106 for (int signed = 0; signed < 2; signed+=1)
107 for (int bits = 6; bits <= 40; bits+=2) {
108 AudioFormat frm = new AudioFormat(44100, bits, 1, signed==1, big==1);
109 byte[] b = new byte[testarray.length * frm.getFrameSize()];
110 AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);
111 conv.toByteArray(testarray, b);
112 int fs = frm.getFrameSize();
113 if(big==1)
114 {
115 for(int i=0; i < b.length; i+= fs )
116 b[i] = (b[i] >= 0) ? (byte)(0x80 | b[i]) : (byte)(0x7F & b[i]);
117 }
118 else
119 {
120 for(int i=(0+fs-1); i < b.length; i+= fs )
121 b[i] = (b[i] >= 0) ? (byte)(0x80 | b[i]) : (byte)(0x7F & b[i]);
122 }
123 float[] testarray2 = new float[testarray.length];
124 AudioFormat frm2 = new AudioFormat(44100, bits, 1, signed==0, big==1);
125 AudioFloatConverter.getConverter(frm2).toFloatArray(b, testarray2);
126 for (int i = 0; i < testarray2.length; i++) {
127 if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
128 {
129 throw new RuntimeException("Conversion failed for " + frm +" to " + frm2 + " , arrays not equal enough!\n");
130 }
131 }
132 }
133
134 // Check if conversion 32->24, 24->16, 16->8 result in same float data
135 AudioFormat frm = new AudioFormat(44100, 40, 1, true, true);
136 byte[] b = new byte[testarray.length * frm.getFrameSize()];
137 AudioFloatConverter.getConverter(frm).toByteArray(testarray, b);
138 for (int bits = 6; bits <= 40; bits+=2) {
139 AudioFormat frm2 = new AudioFormat(44100, bits, 1, true, true);
140 byte[] b2 = new byte[testarray.length * frm2.getFrameSize()];
141 int fs1 = frm.getFrameSize();
142 int fs2 = frm2.getFrameSize();
143 int ii = 0;
144 for (int i = 0; i < b.length; i+=fs1)
145 for (int j = 0; j < fs2; j++)
146 b2[ii++] = b[i+j];
147 float[] testarray2 = new float[testarray.length];
148 AudioFloatConverter.getConverter(frm2).toFloatArray(b2, testarray2);
149 for (int i = 0; i < testarray2.length; i++) {
150 if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
151 {
152 throw new RuntimeException("Conversion failed for " + frm +" to " + frm2 + " , arrays not equal enough!\n");
153 }
154 }
155 }
156 }
157
158 }