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Explain the lack of +3/7

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Originally committed as revision 16380 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-12-28 23:26:12 +00:00
parent 7d204e67e8
commit e4f1ec3a4c
1 changed files with 3 additions and 0 deletions
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3
libavcodec/h264_parser.c
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@ -45,6 +45,9 @@ int ff_h264_find_frame_end(H264Context *h, const uint8_t *buf, int buf_size)
for(i=0; i<buf_size; i++){
if(state==7){
#ifdef HAVE_FAST_UNALIGNED
/* we check i<buf_size instead of i+3/7 because its simpler
* and there should be FF_INPUT_BUFFER_PADDING_SIZE bytes at the end
*/
# ifdef HAVE_FAST_64BIT
while(i<buf_size && !((~*(uint64_t*)(buf+i) & (*(uint64_t*)(buf+i) - 0x0101010101010101ULL)) & 0x8080808080808080ULL))
i+=8;