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13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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15  * accompanied this code).
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25 
26 package com.sun.media.sound;
27 
28 import javax.sound.sampled.AudioFormat;
29 
30 /**
31  * AIFF file format.
32  *
33  * @author Jan Borgersen
34  */
35 final class AiffFileFormat extends StandardFileFormat {
36 
37     static final int AIFF_MAGIC         = 1179603533;
38 
39     // for writing AIFF
40     static final int AIFC_MAGIC                 = 0x41494643;   // 'AIFC'
41     static final int AIFF_MAGIC2                = 0x41494646;   // 'AIFF'
42     static final int FVER_MAGIC                 = 0x46564552;   // 'FVER'
43     static final int FVER_TIMESTAMP             = 0xA2805140;   // timestamp of last AIFF-C update
44     static final int COMM_MAGIC                 = 0x434f4d4d;   // 'COMM'
45     static final int SSND_MAGIC                 = 0x53534e44;   // 'SSND'
46 
47     // compression codes
48     static final int AIFC_PCM                   = 0x4e4f4e45;   // 'NONE' PCM
49     static final int AIFC_ACE2                  = 0x41434532;   // 'ACE2' ACE 2:1 compression
50     static final int AIFC_ACE8                  = 0x41434538;   // 'ACE8' ACE 8:3 compression
51     static final int AIFC_MAC3                  = 0x4d414333;   // 'MAC3' MACE 3:1 compression
52     static final int AIFC_MAC6                  = 0x4d414336;   // 'MAC6' MACE 6:1 compression
53     static final int AIFC_ULAW                  = 0x756c6177;   // 'ulaw' ITU G.711 u-Law
54     static final int AIFC_IMA4                  = 0x696d6134;   // 'ima4' IMA ADPCM
55 
56     // $$fb static approach not good, but needed for estimation
57     static final int AIFF_HEADERSIZE    = 54;
58 
59     //$$fb 2001-07-13: added management of header size in this class
60 
61     /** header size in bytes */
62     private final int headerSize=AIFF_HEADERSIZE;
63 
64     /** comm chunk size in bytes, inclusive magic and length field */
65     private final int commChunkSize=26;
66 
67     /** FVER chunk size in bytes, inclusive magic and length field */
68     private final int fverChunkSize=0;
69 
AiffFileFormat(final Type type, final long byteLength, final AudioFormat format, final long frameLength)70     AiffFileFormat(final Type type, final long byteLength,
71                    final AudioFormat format, final long frameLength) {
72         super(type, byteLength, format, frameLength);
73     }
74 
getHeaderSize()75     int getHeaderSize() {
76         return headerSize;
77     }
78 
getCommChunkSize()79     int getCommChunkSize() {
80         return commChunkSize;
81     }
82 
getFverChunkSize()83     int getFverChunkSize() {
84         return fverChunkSize;
85     }
86 
getSsndChunkOffset()87     int getSsndChunkOffset() {
88         return getHeaderSize()-16;
89     }
90 }
91