static av_always_inline void decode_line(FFV1Context *s, int w, int_fast16_t *sample[2], int plane_index, int bits){ PlaneContext * const p= &s->plane[plane_index]; RangeCoder * const c= &s->c; int x; int run_count=0; int run_mode=0; int run_index= s->run_index; for(x=0; x<w; x++){ int diff, context, sign; context= get_context(s, sample[1] + x, sample[0] + x, sample[1] + x); if(context < 0){ context= -context; sign=1; }else sign=0; if(s->ac){ diff= get_symbol_inline(c, p->state[context], 1); }else{ if(context == 0 && run_mode==0) run_mode=1; if(run_mode){ if(run_count==0 && run_mode==1){ if(get_bits1(&s->gb)){ run_count = 1<<ff_log2_run[run_index]; if(x + run_count <= w) run_index++; }else{ if(ff_log2_run[run_index]) run_count = get_bits(&s->gb, ff_log2_run[run_index]); else run_count=0; if(run_index) run_index--; run_mode=2; } } run_count--; if(run_count < 0){ run_mode=0; run_count=0; diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits); if(diff>=0) diff++; }else diff=0; }else diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits); // printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, get_bits_count(&s->gb)); } if(sign) diff= -diff; sample[1][x]= (predict(sample[1] + x, sample[0] + x) + diff) & ((1<<bits)-1); } s->run_index= run_index; }