01: /*
02: * Copyright (c) 2000 Silvere Martin-Michiellot All Rights Reserved.
03: *
04: * Silvere Martin-Michiellot grants you ("Licensee") a non-exclusive,
05: * royalty free, license to use, modify and redistribute this
06: * software in source and binary code form,
07: * provided that i) this copyright notice and license appear on all copies of
08: * the software; and ii) Licensee does not utilize the software in a manner
09: * which is disparaging to Silvere Martin-Michiellot.
10: *
11: * This software is provided "AS IS," without a warranty of any kind. ALL
12: * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
13: * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
14: * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. Silvere Martin-Michiellot
15: * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES
16: * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
17: * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL
18: * Silvere Martin-Michiellot OR ITS LICENSORS BE LIABLE
19: * FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
20: * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
21: * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
22: * OR INABILITY TO USE SOFTWARE, EVEN IF Silvere Martin-Michiellot HAS BEEN
23: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
24: *
25: * This software is not designed or intended for use in on-line control of
26: * aircraft, air traffic, aircraft navigation or aircraft communications; or in
27: * the design, construction, operation or maintenance of any nuclear
28: * facility. Licensee represents and warrants that it will not use or
29: * redistribute the Software for such purposes.
30: *
31: */
32:
33: // This code is repackaged after the code from Craig A. Lindley, from Digital Audio with Java
34: // Site ftp://ftp.prenhall.com/pub/ptr/professional_computer_science.w-022/digital_audio/
35: // Email
36: package com.db.media.audio.dsp.processors;
37:
38: public class Distortion extends AbstractAudio {
39:
40: // Private class data
41: private int threshold = 32767;
42: private double gain = 1.0;
43:
44: public Distortion() {
45:
46: super ("Distortion", AbstractAudio.PROCESSOR);
47:
48: }
49:
50: public void setThreshold(int threshold) {
51:
52: this .threshold = threshold;
53:
54: }
55:
56: public void setGain(double gain) {
57:
58: this .gain = gain;
59:
60: }
61:
62: public int getSamples(short[] buffer, int length) {
63:
64: int len = previous.getSamples(buffer, length);
65: if (getByPass())
66: return len;
67:
68: for (int i = 0; i < len; i++) {
69: int sample = buffer[i];
70: if (sample > threshold)
71: sample = threshold;
72: else if (sample < -threshold)
73: sample = -threshold;
74:
75: buffer[i] = (short) (sample * gain);
76: }
77:
78: return len;
79:
80: }
81:
82: }
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