Libav
Main Page
Related Pages
Modules
Data Structures
Files
Examples
File List
Globals
libavcodec
bitstream_filter.c
Go to the documentation of this file.
1
/*
2
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
3
*
4
* This file is part of Libav.
5
*
6
* Libav is free software; you can redistribute it and/or
7
* modify it under the terms of the GNU Lesser General Public
8
* License as published by the Free Software Foundation; either
9
* version 2.1 of the License, or (at your option) any later version.
10
*
11
* Libav is distributed in the hope that it will be useful,
12
* but WITHOUT ANY WARRANTY; without even the implied warranty of
13
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14
* Lesser General Public License for more details.
15
*
16
* You should have received a copy of the GNU Lesser General Public
17
* License along with Libav; if not, write to the Free Software
18
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19
*/
20
21
#include <string.h>
22
23
#include "
avcodec.h
"
24
#include "
libavutil/mem.h
"
25
26
static
AVBitStreamFilter
*
first_bitstream_filter
=
NULL
;
27
28
AVBitStreamFilter
*
av_bitstream_filter_next
(
AVBitStreamFilter
*f)
29
{
30
if
(f)
31
return
f->
next
;
32
else
33
return
first_bitstream_filter
;
34
}
35
36
void
av_register_bitstream_filter
(
AVBitStreamFilter
*bsf)
37
{
38
bsf->
next
=
first_bitstream_filter
;
39
first_bitstream_filter = bsf;
40
}
41
42
AVBitStreamFilterContext
*
av_bitstream_filter_init
(
const
char
*
name
)
43
{
44
AVBitStreamFilter
*bsf =
first_bitstream_filter
;
45
46
while
(bsf) {
47
if
(!strcmp(name, bsf->
name
)) {
48
AVBitStreamFilterContext
*bsfc =
49
av_mallocz
(
sizeof
(
AVBitStreamFilterContext
));
50
bsfc->
filter
= bsf;
51
bsfc->
priv_data
=
52
bsf->
priv_data_size
?
av_mallocz
(bsf->
priv_data_size
) :
NULL
;
53
return
bsfc;
54
}
55
bsf = bsf->
next
;
56
}
57
return
NULL
;
58
}
59
60
void
av_bitstream_filter_close
(
AVBitStreamFilterContext
*bsfc)
61
{
62
if
(bsfc->
filter
->
close
)
63
bsfc->
filter
->
close
(bsfc);
64
av_freep
(&bsfc->
priv_data
);
65
av_parser_close
(bsfc->
parser
);
66
av_free
(bsfc);
67
}
68
69
int
av_bitstream_filter_filter
(
AVBitStreamFilterContext
*bsfc,
70
AVCodecContext
*avctx,
const
char
*args,
71
uint8_t
**poutbuf,
int
*poutbuf_size,
72
const
uint8_t
*buf,
int
buf_size,
int
keyframe)
73
{
74
*poutbuf = (
uint8_t
*)buf;
75
*poutbuf_size = buf_size;
76
return
bsfc->
filter
->
filter
(bsfc, avctx, args, poutbuf, poutbuf_size,
77
buf, buf_size, keyframe);
78
}
Generated on Tue Mar 1 2016 21:14:23 for Libav by
1.8.4