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Optimize loop filtering of the left edge in MBAFF.
60 cpu cycles speedup Originally committed as revision 21467 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -633,18 +633,19 @@ void ff_h264_filter_mb( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint
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*(uint64_t*)&bS[4]= 0x0004000400040004ULL;
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else {
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for( i = 0; i < 8; i++ ) {
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int mbn_xy = MB_FIELD ? h->left_mb_xy[i>>2] : h->left_mb_xy[i&1];
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int j= MB_FIELD ? i>>2 : i&1;
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int mbn_xy = h->left_mb_xy[j];
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int mbn_type= h->left_type[j];
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if( IS_INTRA( s->current_picture.mb_type[mbn_xy] ) )
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if( IS_INTRA( mbn_type ) )
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bS[i] = 4;
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else if( h->non_zero_count_cache[12+8*(i>>1)] != 0 ||
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((!h->pps.cabac && IS_8x8DCT(s->current_picture.mb_type[mbn_xy])) ?
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else{
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bS[i] = 1 + !!(h->non_zero_count_cache[12+8*(i>>1)] |
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((!h->pps.cabac && IS_8x8DCT(mbn_type)) ?
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(h->cbp_table[mbn_xy] & ((MB_FIELD ? (i&2) : (mb_y&1)) ? 8 : 2))
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:
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h->non_zero_count[mbn_xy][7+(MB_FIELD ? (i&3) : (i>>2)+(mb_y&1)*2)*8]))
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bS[i] = 2;
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else
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bS[i] = 1;
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h->non_zero_count[mbn_xy][7+(MB_FIELD ? (i&3) : (i>>2)+(mb_y&1)*2)*8]));
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}
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}
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}
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