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move ff_mpeg4_find_frame_end() from h263dec.c to mpeg4video_parser.c

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now h263dec depends on mpeg4video_parser
this fixes compilation when h263 decoder is disabled

Originally committed as revision 8962 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs
2007-05-09 23:13:43 +00:00
parent 87e61d09cc
commit df495dbd9a
5 changed files with 74 additions and 45 deletions
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38
libavcodec/mpeg4video_parser.c
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@@ -22,8 +22,46 @@
#include "parser.h"
#include "mpegvideo.h"
#include "mpeg4video_parser.h"
int ff_mpeg4_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size){
int vop_found, i;
uint32_t state;
vop_found= pc->frame_start_found;
state= pc->state;
i=0;
if(!vop_found){
for(i=0; i<buf_size; i++){
state= (state<<8) | buf[i];
if(state == 0x1B6){
i++;
vop_found=1;
break;
}
}
}
if(vop_found){
/* EOF considered as end of frame */
if (buf_size == 0)
return 0;
for(; i<buf_size; i++){
state= (state<<8) | buf[i];
if((state&0xFFFFFF00) == 0x100){
pc->frame_start_found=0;
pc->state=-1;
return i-3;
}
}
}
pc->frame_start_found= vop_found;
pc->state= state;
return END_NOT_FOUND;
}
/* XXX: make it use less memory */
static int av_mpeg4_decode_header(AVCodecParserContext *s1,
AVCodecContext *avctx,