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move noise bitstream filter in its own file 

Originally committed as revision 9064 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs 2007-05-19 00:30:15 +00:00
parent a975d9e288
commit cd7105e6a0
3 changed files with 47 additions and 27 deletions
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2
libavcodec/Makefile
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@ -306,7 +306,7 @@ OBJS-$(CONFIG_VC1_PARSER) += vc1_parser.o
OBJS-$(CONFIG_DUMP_EXTRADATA_BSF) += bitstream_filter.o
OBJS-$(CONFIG_REMOVE_EXTRADATA_BSF) += bitstream_filter.o
OBJS-$(CONFIG_NOISE_BSF) += bitstream_filter.o
OBJS-$(CONFIG_NOISE_BSF) += noise_bsf.o
OBJS-$(CONFIG_MP3_HEADER_COMPRESS_BSF) += mp3_header_compress_bsf.o
OBJS-$(CONFIG_MP3_HEADER_DECOMPRESS_BSF) += mp3_header_decompress_bsf.o mpegaudiodata.o
OBJS-$(CONFIG_MJPEGA_DUMP_HEADER_BSF) += mjpegdec.o mjpeg.o jpeglsdec.o jpegls.o

26
libavcodec/bitstream_filter.c
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@ -106,24 +106,6 @@ static int remove_extradata(AVBitStreamFilterContext *bsfc, AVCodecContext *avct
return 0;
}
static int noise(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size, int keyframe){
int amount= args ? atoi(args) : 10000;
unsigned int *state= bsfc->priv_data;
int i;
*poutbuf= av_malloc(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
memcpy(*poutbuf, buf, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
for(i=0; i<buf_size; i++){
(*state) += (*poutbuf)[i] + 1;
if(*state % amount == 0)
(*poutbuf)[i] = *state;
}
return 1;
}
#ifdef CONFIG_DUMP_EXTRADATA_BSF
AVBitStreamFilter dump_extradata_bsf={
"dump_extra",
@ -139,11 +121,3 @@ AVBitStreamFilter remove_extradata_bsf={
remove_extradata,
};
#endif
#ifdef CONFIG_NOISE_BSF
AVBitStreamFilter noise_bsf={
"noise",
sizeof(int),
noise,
};
#endif

46
libavcodec/noise_bsf.c Normal file
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@ -0,0 +1,46 @@
/*
* 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 "avcodec.h"
static int noise(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size, int keyframe){
int amount= args ? atoi(args) : 10000;
unsigned int *state= bsfc->priv_data;
int i;
*poutbuf= av_malloc(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
memcpy(*poutbuf, buf, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
for(i=0; i<buf_size; i++){
(*state) += (*poutbuf)[i] + 1;
if(*state % amount == 0)
(*poutbuf)[i] = *state;
}
return 1;
}
AVBitStreamFilter noise_bsf={
"noise",
sizeof(int),
noise,
};