mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-18 03:19:31 +02:00
57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
/*
|
|
* Copyright (c) 2008 Reimar Döffinger
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "avcodec.h"
|
|
|
|
|
|
static int text2movsub(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
|
|
uint8_t **poutbuf, int *poutbuf_size,
|
|
const uint8_t *buf, int buf_size, int keyframe){
|
|
if (buf_size > 0xffff) return 0;
|
|
*poutbuf_size = buf_size + 2;
|
|
*poutbuf = av_malloc(*poutbuf_size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
AV_WB16(*poutbuf, buf_size);
|
|
memcpy(*poutbuf + 2, buf, buf_size);
|
|
return 1;
|
|
}
|
|
|
|
AVBitStreamFilter text2movsub_bsf={
|
|
"text2movsub",
|
|
0,
|
|
text2movsub,
|
|
};
|
|
|
|
static int mov2textsub(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
|
|
uint8_t **poutbuf, int *poutbuf_size,
|
|
const uint8_t *buf, int buf_size, int keyframe){
|
|
if (buf_size < 2) return 0;
|
|
*poutbuf_size = FFMIN(buf_size - 2, AV_RB16(buf));
|
|
*poutbuf = av_malloc(*poutbuf_size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
memcpy(*poutbuf, buf + 2, *poutbuf_size);
|
|
return 1;
|
|
}
|
|
|
|
AVBitStreamFilter mov2textsub_bsf={
|
|
"mov2textsub",
|
|
0,
|
|
mov2textsub,
|
|
};
|