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
31
32 /* if we don't know the size in advance */
33 #define AU_UNKNOWN_SIZE ((uint32_t)(~0))
34
36 {
37 /* check file header */
39 if ((magic == 0x0B8D || magic == 0x0C0D || magic == 0x0C8D) &&
40 p->
buf[2] ==
'S' && p->
buf[3] ==
'O' &&
41 p->
buf[4] ==
'L' && p->
buf[5] == 0)
43 else
44 return 0;
45 }
46
50
52 {
53 if (magic == 0x0B8D)
54 {
57 }
59 {
63 }
66 }
67
69 {
70 if (magic == 0x0B8D) return 1;//SOL_DPCM_OLD;
72 {
73 if (type &
SOL_16BIT)
return 3;
//SOL_DPCM_NEW16;
74 else if (magic == 0x0C8D) return 1;//SOL_DPCM_OLD;
75 else return 2;//SOL_DPCM_NEW8;
76 }
77 return -1;
78 }
79
81 {
82 if (magic == 0x0B8D || !(type &
SOL_STEREO))
return 1;
83 return 2;
84 }
85
87 {
88 unsigned int magic,
tag;
90 unsigned int id, channels, rate,
type;
93
94 /* check ".snd" header */
97 if (tag !=
MKTAG(
'S',
'O',
'L', 0))
98 return -1;
102 if (magic != 0x0B8D)
103 avio_r8(pb);
/* newer SOLs contain padding byte */
104
107
110 else id = 0;
111
112 /* now we are ready: build format streams */
114 if (!st)
115 return -1;
124 return 0;
125 }
126
127 #define MAX_SIZE 4096
128
131 {
133
137 if (ret < 0)
141 return 0;
142 }
143
151 };