1 /*
2 * Copyright (c) 2009, 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 SoftFilter processAudio method */
26
27 import java.io.File;
28 import java.io.FileOutputStream;
29 import java.io.IOException;
30 import java.util.Random;
31
32 import javax.sound.sampled.*;
33
34 import com.sun.media.sound.*;
35
36 public class TestProcessAudio {
37
38 public static void main(String[] args) throws Exception {
39 AudioFormat format = new AudioFormat(44100, 16, 2, true, false);
40 SoftAudioBuffer sbuffer = new SoftAudioBuffer(3600, format);
41 SoftFilter filter = new SoftFilter(format.getSampleRate());
42 Random random = new Random(42);
43
44
45 for (int t = 0; t <= 6; t++)
46 {
47 if(t == 0) filter.setFilterType(SoftFilter.FILTERTYPE_BP12);
48 if(t == 1) filter.setFilterType(SoftFilter.FILTERTYPE_HP12);
49 if(t == 2) filter.setFilterType(SoftFilter.FILTERTYPE_HP24);
50 if(t == 3) filter.setFilterType(SoftFilter.FILTERTYPE_LP12);
51 if(t == 4) filter.setFilterType(SoftFilter.FILTERTYPE_LP24);
52 if(t == 5) filter.setFilterType(SoftFilter.FILTERTYPE_LP6);
53 if(t == 6) filter.setFilterType(SoftFilter.FILTERTYPE_NP12);
54
55
56 // Try first by reseting always
57 for (int f = 1200; f < 3600; f+=100)
58 for (int r = 0; r <= 30; r+=5) {
59 filter.reset();
60 filter.setResonance(r);
61 filter.setFrequency(f);
62 float[] data = sbuffer.array();
63 int len = sbuffer.getSize();
64 for (int i = 0; i < len; i++)
65 data[i] = random.nextFloat() - 0.5f;
66 filter.processAudio(sbuffer);
67 }
68
69 // Now we skip reseting
70 // to test how changing frequency and resonance
71 // affect active filter
72 for (int f = 100; f < 12800; f+=1200)
73 for (int r = 0; r <= 30; r+=5) {
74 filter.setResonance(r);
75 filter.setFrequency(f);
76 float[] data = sbuffer.array();
77 int len = sbuffer.getSize();
78 for (int i = 0; i < len; i++)
79 data[i] = random.nextFloat() - 0.5f;
80 filter.processAudio(sbuffer);
81 }
82 for (int f = 12800; f >= 100; f-=1200)
83 for (int r = 30; r >= 0; r-=5) {
84 filter.setResonance(r);
85 filter.setFrequency(f);
86 float[] data = sbuffer.array();
87 int len = sbuffer.getSize();
88 for (int i = 0; i < len; i++)
89 data[i] = random.nextFloat() - 0.5f;
90 filter.processAudio(sbuffer);
91 }
92 filter.reset();
93 }
94
95 }
96
97 }