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Detect equal 4x4 blocks in spatial direct MBs. 

19 cycles slower MV generation
575 cycles faster MC

Originally committed as revision 21689 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2010-02-08 13:05:24 +00:00
parent ecc0027bc6
commit 8b9eb2dfec
1 changed files with 6 additions and 1 deletions
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7
libavcodec/h264_direct.c
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@ -345,7 +345,8 @@ single_col:
if(ref[1] == 0)
fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
}
}else
}else{
int m=0;
for(i4=0; i4<4; i4++){
const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
@ -353,8 +354,12 @@ single_col:
*(uint32_t*)h->mv_cache[0][scan8[i8*4+i4]] = 0;
if(ref[1] == 0)
*(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] = 0;
m++;
}
}
if(!(m&3))
h->sub_mb_type[i8]+= MB_TYPE_16x16 - MB_TYPE_8x8;
}
}
}
}