Skip chroma handling when there is no coded chroma.
authorMichael Niedermayer <michaelni@gmx.at>
Thu, 18 Dec 2008 00:46:54 +0000 (00:46 +0000)
committerMichael Niedermayer <michaelni@gmx.at>
Thu, 18 Dec 2008 00:46:54 +0000 (00:46 +0000)
0.5% overall speedup for the cathedral sample.

Originally committed as revision 16201 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/h264.c

index 1b32645..341b9a8 100644 (file)
@@ -2547,7 +2547,7 @@ static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
             }
         }
 
-        if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
+        if((simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
             uint8_t *dest[2] = {dest_cb, dest_cr};
             if(transform_bypass){
                 idct_add = idct_dc_add = s->dsp.add_pixels4;