mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/*
|
|
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* 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 <string.h>
|
|
|
|
#include "avcodec.h"
|
|
#include "libavutil/atomic.h"
|
|
#include "libavutil/mem.h"
|
|
|
|
static AVBitStreamFilter *first_bitstream_filter = NULL;
|
|
|
|
AVBitStreamFilter *av_bitstream_filter_next(const AVBitStreamFilter *f)
|
|
{
|
|
if (f)
|
|
return f->next;
|
|
else
|
|
return first_bitstream_filter;
|
|
}
|
|
|
|
void av_register_bitstream_filter(AVBitStreamFilter *bsf)
|
|
{
|
|
do {
|
|
bsf->next = first_bitstream_filter;
|
|
} while(bsf->next != avpriv_atomic_ptr_cas((void * volatile *)&first_bitstream_filter, bsf->next, bsf));
|
|
}
|
|
|
|
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name)
|
|
{
|
|
AVBitStreamFilter *bsf = NULL;
|
|
|
|
while (bsf = av_bitstream_filter_next(bsf)) {
|
|
if (!strcmp(name, bsf->name)) {
|
|
AVBitStreamFilterContext *bsfc =
|
|
av_mallocz(sizeof(AVBitStreamFilterContext));
|
|
bsfc->filter = bsf;
|
|
bsfc->priv_data =
|
|
bsf->priv_data_size ? av_mallocz(bsf->priv_data_size) : NULL;
|
|
return bsfc;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void av_bitstream_filter_close(AVBitStreamFilterContext *bsfc)
|
|
{
|
|
if (!bsfc)
|
|
return;
|
|
if (bsfc->filter->close)
|
|
bsfc->filter->close(bsfc);
|
|
av_freep(&bsfc->priv_data);
|
|
av_parser_close(bsfc->parser);
|
|
av_free(bsfc);
|
|
}
|
|
|
|
int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
|
|
AVCodecContext *avctx, const char *args,
|
|
uint8_t **poutbuf, int *poutbuf_size,
|
|
const uint8_t *buf, int buf_size, int keyframe)
|
|
{
|
|
*poutbuf = (uint8_t *)buf;
|
|
*poutbuf_size = buf_size;
|
|
return bsfc->filter->filter(bsfc, avctx, args, poutbuf, poutbuf_size,
|
|
buf, buf_size, keyframe);
|
|
}
|