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.
  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[]) method */
  26 
  27 import java.io.*;
  28 
  29 import javax.sound.sampled.*;
  30 
  31 import com.sun.media.sound.*;
  32 
  33 public class ReadFloatArray {
  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);
  73             for (int j = 0; j < buff.length; j++)
  74                 if(!(Math.abs(buff[j] - test_float_array[j]) < 0.0001))
  75                     throw new RuntimeException("Incorrect data in buffer.");
  76         }
  77     }
  78 
  79 }