Main Page
Related Pages
Modules
Data Structures
Files
Examples
File List
Globals
libavcodec
movsub_bsf.c
Go to the documentation of this file.
1
/*
2
* Copyright (c) 2008 Reimar Döffinger
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 "
libavutil/intreadwrite.h
"
22
#include "
avcodec.h
"
23
24
25
static
int
text2movsub
(
AVBitStreamFilterContext
*bsfc,
AVCodecContext
*avctx,
const
char
*args,
26
uint8_t **poutbuf,
int
*poutbuf_size,
27
const
uint8_t *buf,
int
buf_size,
int
keyframe){
28
if
(buf_size > 0xffff)
return
0;
29
*poutbuf_size = buf_size + 2;
30
*poutbuf =
av_malloc
(*poutbuf_size +
FF_INPUT_BUFFER_PADDING_SIZE
);
31
AV_WB16
(*poutbuf, buf_size);
32
memcpy(*poutbuf + 2, buf, buf_size);
33
return
1;
34
}
35
36
AVBitStreamFilter
ff_text2movsub_bsf
={
37
"text2movsub"
,
38
0,
39
text2movsub
,
40
};
41
42
static
int
mov2textsub
(
AVBitStreamFilterContext
*bsfc,
AVCodecContext
*avctx,
const
char
*args,
43
uint8_t **poutbuf,
int
*poutbuf_size,
44
const
uint8_t *buf,
int
buf_size,
int
keyframe){
45
if
(buf_size < 2)
return
0;
46
*poutbuf_size =
FFMIN
(buf_size - 2,
AV_RB16
(buf));
47
*poutbuf =
av_malloc
(*poutbuf_size +
FF_INPUT_BUFFER_PADDING_SIZE
);
48
memcpy(*poutbuf, buf + 2, *poutbuf_size);
49
return
1;
50
}
51
52
AVBitStreamFilter
ff_mov2textsub_bsf
={
53
"mov2textsub"
,
54
0,
55
mov2textsub
,
56
};