1 /*
2 * Sierra SOL demuxer
3 * Copyright Konstantin Shishkov
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /*
23 * Based on documents from Game Audio Player and own research
24 */
25
32
33 /* if we don't know the size in advance */
34 #define AU_UNKNOWN_SIZE ((uint32_t)(~0))
35
37 {
38 /* check file header */
40 if ((magic == 0x0B8D || magic == 0x0C0D || magic == 0x0C8D) &&
41 p->
buf[2] ==
'S' && p->
buf[3] ==
'O' &&
42 p->
buf[4] ==
'L' && p->
buf[5] == 0)
44 else
45 return 0;
46 }
47
51
53 {
56
57 if (magic == 0x0B8D)
59
62
64 }
65
67 {
68 if (magic == 0x0B8D) return 1;//SOL_DPCM_OLD;
70 {
72 else if (magic == 0x0C8D) return 1;//SOL_DPCM_OLD;
73 else return 2;//SOL_DPCM_NEW8;
74 }
75 return -1;
76 }
77
79 {
81 return 2;
82 }
83
85 {
86 unsigned int magic,
tag;
91
92 /* check ".snd" header */
96 return -1;
100 if (magic != 0x0B8D)
101 avio_r8(pb);
/* newer SOLs contain padding byte */
102
105
108 else id = 0;
109
110 /* now we are ready: build format streams */
112 if (!st)
113 return -1;
120 return 0;
121 }
122
123 #define MAX_SIZE 4096
124
127 {
129
132
138 return 0;
139 }
140
148 };