1 /*
2 * Copyright (c) 1999, 2016, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.media.sound;
27
28 import javax.sound.sampled.AudioFileFormat;
29 import javax.sound.sampled.AudioFormat;
30
31 /**
32 * AU file format.
33 *
34 * @author Jan Borgersen
35 */
36 final class AuFileFormat extends StandardFileFormat {
37
38 // magic numbers
39 static final int AU_SUN_MAGIC = 0x2e736e64; // ".snd"
40
41 // encodings
42 static final int AU_ULAW_8 = 1; /* 8-bit ISDN u-law */
43 static final int AU_LINEAR_8 = 2; /* 8-bit linear PCM */
44 static final int AU_LINEAR_16 = 3; /* 16-bit linear PCM */
45 static final int AU_LINEAR_24 = 4; /* 24-bit linear PCM */
46 static final int AU_LINEAR_32 = 5; /* 32-bit linear PCM */
47 static final int AU_FLOAT = 6; /* 32-bit IEEE floating point */
48 // we don't support these ...
49 // static final int AU_DOUBLE = 7; /* 64-bit IEEE floating point */
50 // static final int AU_ADPCM_G721 = 23; /* 4-bit CCITT g.721 ADPCM */
51 // static final int AU_ADPCM_G722 = 24; /* CCITT g.722 ADPCM */
52 // static final int AU_ADPCM_G723_3 = 25; /* CCITT g.723 3-bit ADPCM */
53 // static final int AU_ADPCM_G723_5 = 26; /* CCITT g.723 5-bit ADPCM */
54 static final int AU_ALAW_8 = 27; /* 8-bit ISDN A-law */
55
56 static final int AU_HEADERSIZE = 24;
57
58 /**
59 * According the specification of AU file format this is the value for
60 * length field if length is not known. This is a maximum possible value for
61 * the unsigned int.
62 */
63 static final long /*unsigned int */ UNKNOWN_SIZE = 0xffffffffL;
64
65 private int auType;
66
67 AuFileFormat(final AudioFileFormat.Type type, final long byteLength,
68 final AudioFormat format, final long frameLength) {
69 super(type, byteLength, format, frameLength);
70
71 AudioFormat.Encoding encoding = format.getEncoding();
72
73 auType = -1;
74
75 if (AudioFormat.Encoding.ALAW.equals(encoding)) {
76 if (format.getSampleSizeInBits() == 8) {
77 auType = AU_ALAW_8;
78 }
79 } else if (AudioFormat.Encoding.ULAW.equals(encoding)) {
80 if (format.getSampleSizeInBits() == 8) {
81 auType = AU_ULAW_8;
82 }
83 } else if (AudioFormat.Encoding.PCM_SIGNED.equals(encoding)) {
84 if (format.getSampleSizeInBits() == 8) {
85 auType = AU_LINEAR_8;
86 } else if (format.getSampleSizeInBits() == 16) {
87 auType = AU_LINEAR_16;
88 } else if (format.getSampleSizeInBits() == 24) {
89 auType = AU_LINEAR_24;
90 } else if (format.getSampleSizeInBits() == 32) {
91 auType = AU_LINEAR_32;
92 }
93 } else if (AudioFormat.Encoding.PCM_FLOAT.equals(encoding)) {
94 if (format.getSampleSizeInBits() == 32) {
95 auType = AU_FLOAT;
96 }
97 }
98 }
99
100 public int getAuType() {
101 return auType;
102 }
103 }