TestProcessAudio.java revision 8729:0242fce0f717 
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
27import java.io.File;
28import java.io.FileOutputStream;
29import java.io.IOException;
30import java.util.Random;
31
32import javax.sound.sampled.*;
33
34import com.sun.media.sound.*;
35
36public 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}
98