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Skip non intra luma code when there is no coded luma.

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0.7% speedup for the cathedral sample.

Originally committed as revision 16203 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-12-18 01:10:51 +00:00
parent 00794ed0d9
commit 49c084a745
1 changed files with 1 additions and 1 deletions
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2
libavcodec/h264.c
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@ -2525,7 +2525,7 @@ static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
idct_dc_add(dest_y + block_offset[i], h->mb + i*16, linesize);
}
}
}else{
}else if(h->cbp&15){
const int di = IS_8x8DCT(mb_type) ? 4 : 1;
for(i=0; i<16; i+=di){
int nnz = h->non_zero_count_cache[ scan8[i] ];