static void filter_line_c(uint8_t *dst, uint8_t *prev, uint8_t *cur, uint8_t *next, int w, int refs, int parity, int mode) { int x; uint8_t *prev2 = parity ? prev : cur ; uint8_t *next2 = parity ? cur : next; for (x = 0; x < w; x++) { int c = cur[-refs]; int d = (prev2[0] + next2[0])>>1; int e = cur[+refs]; int temporal_diff0 = FFABS(prev2[0] - next2[0]); int temporal_diff1 =(FFABS(prev[-refs] - c) + FFABS(prev[+refs] - e) )>>1; int temporal_diff2 =(FFABS(next[-refs] - c) + FFABS(next[+refs] - e) )>>1; int diff = FFMAX3(temporal_diff0>>1, temporal_diff1, temporal_diff2); int spatial_pred = (c+e)>>1; int spatial_score = FFABS(cur[-refs-1] - cur[+refs-1]) + FFABS(c-e) + FFABS(cur[-refs+1] - cur[+refs+1]) - 1; #define CHECK(j)\ { int score = FFABS(cur[-refs-1+j] - cur[+refs-1-j])\ + FFABS(cur[-refs +j] - cur[+refs -j])\ + FFABS(cur[-refs+1+j] - cur[+refs+1-j]);\ if (score < spatial_score) {\ spatial_score= score;\ spatial_pred= (cur[-refs +j] + cur[+refs -j])>>1;\ CHECK(-1) CHECK(-2) }} }}