Commit | Line | Data |
---|---|---|
2ba45a60 DM |
1 | /* |
2 | * Copyright (c) 2008 Reimar Döffinger | |
3 | * | |
4 | * This file is part of FFmpeg. | |
5 | * | |
6 | * FFmpeg 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 | * FFmpeg 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 FFmpeg; 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/common.h" | |
22 | #include "libavutil/intreadwrite.h" | |
23 | #include "avcodec.h" | |
24 | ||
25 | ||
26 | static int text2movsub(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args, | |
27 | uint8_t **poutbuf, int *poutbuf_size, | |
28 | const uint8_t *buf, int buf_size, int keyframe){ | |
29 | if (buf_size > 0xffff) return 0; | |
30 | *poutbuf_size = buf_size + 2; | |
31 | *poutbuf = av_malloc(*poutbuf_size + FF_INPUT_BUFFER_PADDING_SIZE); | |
32 | AV_WB16(*poutbuf, buf_size); | |
33 | memcpy(*poutbuf + 2, buf, buf_size); | |
34 | return 1; | |
35 | } | |
36 | ||
37 | AVBitStreamFilter ff_text2movsub_bsf={ | |
38 | .name = "text2movsub", | |
39 | .filter = 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 | .name = "mov2textsub", | |
54 | .filter = mov2textsub, | |
55 | }; |