ReadFloatArrayIntInt.java revision 8729:0242fce0f717 
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 AudioFloatInputStream read(float[], int, int) method */
26
27import java.io.*;
28
29import javax.sound.sampled.*;
30
31import com.sun.media.sound.*;
32
33public class ReadFloatArrayIntInt {
34
35    static float[] test_float_array;
36    static byte[] test_byte_array;
37    static AudioFormat format = new AudioFormat(44100, 16, 1, true, false);
38
39    static AudioFloatInputStream getStream1()
40    {
41        return AudioFloatInputStream.getInputStream(format, test_byte_array, 0, test_byte_array.length);
42    }
43
44    static AudioFloatInputStream getStream2()
45    {
46        AudioInputStream strm = new AudioInputStream(new ByteArrayInputStream(test_byte_array), format, 1024);
47        return AudioFloatInputStream.getInputStream(strm);
48    }
49
50    static void setUp() throws Exception {
51        test_float_array = new float[1024];
52        test_byte_array = new byte[1024*format.getFrameSize()];
53        for (int i = 0; i < 1024; i++) {
54            double ii = i / 1024.0;
55            ii = ii * ii;
56            test_float_array[i] = (float)Math.sin(10*ii*2*Math.PI);
57            test_float_array[i] += (float)Math.sin(1.731 + 2*ii*2*Math.PI);
58            test_float_array[i] += (float)Math.sin(0.231 + 6.3*ii*2*Math.PI);
59            test_float_array[i] *= 0.3;
60        }
61        AudioFloatConverter.getConverter(format).toByteArray(test_float_array, test_byte_array);
62    }
63
64    public static void main(String[] args) throws Exception {
65        setUp();
66
67        for (int i = 0; i < 2; i++) {
68            AudioFloatInputStream stream = null;
69            if(i == 0) stream = getStream1();
70            if(i == 1) stream = getStream2();
71            float[] buff = new float[1024];
72            stream.read(buff,0,512);
73            stream.read(buff,512,512);
74            for (int j = 0; j < buff.length; j++)
75                if(!(Math.abs(buff[j] - test_float_array[j]) < 0.0001))
76                    throw new RuntimeException("Incorrect data in buffer.");
77
78        }
79    }
80
81}
82