2 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
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.
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.
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
24 #include "libavutil/atomic.h"
25 #include "libavutil/mem.h"
27 static AVBitStreamFilter
*first_bitstream_filter
= NULL
;
29 AVBitStreamFilter
*av_bitstream_filter_next(const AVBitStreamFilter
*f
)
34 return first_bitstream_filter
;
37 void av_register_bitstream_filter(AVBitStreamFilter
*bsf
)
40 bsf
->next
= first_bitstream_filter
;
41 } while(bsf
->next
!= avpriv_atomic_ptr_cas((void * volatile *)&first_bitstream_filter
, bsf
->next
, bsf
));
44 AVBitStreamFilterContext
*av_bitstream_filter_init(const char *name
)
46 AVBitStreamFilter
*bsf
= NULL
;
48 while (bsf
= av_bitstream_filter_next(bsf
)) {
49 if (!strcmp(name
, bsf
->name
)) {
50 AVBitStreamFilterContext
*bsfc
=
51 av_mallocz(sizeof(AVBitStreamFilterContext
));
54 bsf
->priv_data_size
? av_mallocz(bsf
->priv_data_size
) : NULL
;
61 void av_bitstream_filter_close(AVBitStreamFilterContext
*bsfc
)
65 if (bsfc
->filter
->close
)
66 bsfc
->filter
->close(bsfc
);
67 av_freep(&bsfc
->priv_data
);
68 av_parser_close(bsfc
->parser
);
72 int av_bitstream_filter_filter(AVBitStreamFilterContext
*bsfc
,
73 AVCodecContext
*avctx
, const char *args
,
74 uint8_t **poutbuf
, int *poutbuf_size
,
75 const uint8_t *buf
, int buf_size
, int keyframe
)
77 *poutbuf
= (uint8_t *)buf
;
78 *poutbuf_size
= buf_size
;
79 return bsfc
->filter
->filter(bsfc
, avctx
, args
, poutbuf
, poutbuf_size
,
80 buf
, buf_size
, keyframe
);