blob: 80b28d56e20a3bb0885690fbcf5dc8c46cb29a2f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
/*
* section and descriptor parser
*
* Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org)
* Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <libucsi/mpeg/pat_section.h>
struct mpeg_pat_section *mpeg_pat_section_codec(struct section_ext * ext)
{
uint8_t *buf = (uint8_t *)ext;
int pos = sizeof(struct section_ext);
int len = section_ext_length(ext);
if (len < sizeof(struct mpeg_pat_section))
return NULL;
while (pos < len) {
if ((pos + 4) > len)
return NULL;
bswap16(buf + pos);
bswap16(buf + pos + 2);
pos += 4;
}
if (pos != len)
return NULL;
return (struct mpeg_pat_section *)ext;
}
|
