slightly faster bit trickery.

Originally committed as revision 21540 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavcodec/h264_loopfilter.c b/libavcodec/h264_loopfilter.c
index 5a13d14b14a51ac0ece99b0ad7e794b378c0a980..f3bcad756313d6d6ab1e6550988d6ee05aef10b6 100644 (file)
--- a/libavcodec/h264_loopfilter.c
+++ b/libavcodec/h264_loopfilter.c
@@ -374,8 +374,8 @@ void ff_h264_filter_mb_fast( H264Context *h, int mb_x, int mb_y, uint8_t *img_y,
             edges = 4;
             bSv[0][0] = bSv[0][2] = bSv[1][0] = bSv[1][2] = 0x0002000200020002ULL;
         } else {
-            int mask_edge1 = (3*!!(mb_type & (MB_TYPE_16x16 | MB_TYPE_8x16))) | (mb_type>>4); //(mb_type & (MB_TYPE_16x16 | MB_TYPE_8x16)) ? 3 : (mb_type & MB_TYPE_16x8) ? 1 : 0;
-            int mask_edge0 = 3*((mask_edge1>>1) & !!(h->left_type[0] & (MB_TYPE_16x16 | MB_TYPE_8x16))); // (mb_type & (MB_TYPE_16x16 | MB_TYPE_8x16)) && (h->left_type[0] & (MB_TYPE_16x16 | MB_TYPE_8x16)) ? 3 : 0;
+            int mask_edge1 = (3*(((5*mb_type)>>5)&1)) | (mb_type>>4); //(mb_type & (MB_TYPE_16x16 | MB_TYPE_8x16)) ? 3 : (mb_type & MB_TYPE_16x8) ? 1 : 0;
+            int mask_edge0 = 3*((mask_edge1>>1) & ((5*h->left_type[0])>>5)&1); // (mb_type & (MB_TYPE_16x16 | MB_TYPE_8x16)) && (h->left_type[0] & (MB_TYPE_16x16 | MB_TYPE_8x16)) ? 3 : 0;
             int step =  1+(mb_type>>24); //IS_8x8DCT(mb_type) ? 2 : 1;
             edges = 4 - 3*((mb_type>>3) & !(h->cbp & 15)); //(mb_type & MB_TYPE_16x16) && !(h->cbp & 15) ? 1 : 4;
             s->dsp.h264_loop_filter_strength( bS, h->non_zero_count_cache, h->ref_cache, h->mv_cache,