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libavcodec
bitstream_filter.c
Go to the documentation of this file.
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/*
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* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "
avcodec.h
"
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static
AVBitStreamFilter
*
first_bitstream_filter
=
NULL
;
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AVBitStreamFilter
*
av_bitstream_filter_next
(
AVBitStreamFilter
*
f
){
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if
(f)
return
f->
next
;
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else
return
first_bitstream_filter
;
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}
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void
av_register_bitstream_filter
(
AVBitStreamFilter
*bsf){
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bsf->
next
=
first_bitstream_filter
;
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first_bitstream_filter= bsf;
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}
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AVBitStreamFilterContext
*
av_bitstream_filter_init
(
const
char
*
name
){
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AVBitStreamFilter
*bsf=
first_bitstream_filter
;
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while
(bsf){
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if
(!strcmp(name, bsf->
name
)){
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AVBitStreamFilterContext
*bsfc=
av_mallocz
(
sizeof
(
AVBitStreamFilterContext
));
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bsfc->
filter
= bsf;
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bsfc->
priv_data
=
av_mallocz
(bsf->
priv_data_size
);
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return
bsfc;
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}
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bsf= bsf->
next
;
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}
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return
NULL
;
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}
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void
av_bitstream_filter_close
(
AVBitStreamFilterContext
*bsfc){
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if
(bsfc->
filter
->
close
)
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bsfc->
filter
->
close
(bsfc);
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av_freep
(&bsfc->
priv_data
);
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av_parser_close
(bsfc->
parser
);
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av_free
(bsfc);
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}
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int
av_bitstream_filter_filter
(
AVBitStreamFilterContext
*bsfc,
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AVCodecContext
*avctx,
const
char
*args,
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uint8_t **poutbuf,
int
*poutbuf_size,
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const
uint8_t *buf,
int
buf_size,
int
keyframe){
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*poutbuf= (uint8_t *) buf;
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*poutbuf_size= buf_size;
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return
bsfc->
filter
->
filter
(bsfc, avctx, args, poutbuf, poutbuf_size, buf, buf_size, keyframe);
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}