static void vp6_parse_coeff_models(VP56Context *s) { VP56RangeCoder *c = &s->c; VP56Model *model = s->modelp; int def_prob[11]; int node, cg, ctx, pos; int ct; /* code type */ int pt; /* plane type (0 for Y, 1 for U or V) */ memset(def_prob, 0x80, sizeof(def_prob)); for (pt=0; pt<2; pt++) for (node=0; node<11; node++) if (vp56_rac_get_prob(c, vp6_dccv_pct[pt][node])) { def_prob[node] = vp56_rac_gets_nn(c, 7); model->coeff_dccv[pt][node] = def_prob[node]; } else if (s->framep[VP56_FRAME_CURRENT]->key_frame) { model->coeff_dccv[pt][node] = def_prob[node]; } if (vp56_rac_get(c)) { for (pos=1; pos<64; pos++) if (vp56_rac_get_prob(c, vp6_coeff_reorder_pct[pos])) model->coeff_reorder[pos] = vp56_rac_gets(c, 4); vp6_coeff_order_table_init(s); } for (cg=0; cg<2; cg++) for (node=0; node<14; node++) if (vp56_rac_get_prob(c, vp6_runv_pct[cg][node])) model->coeff_runv[cg][node] = vp56_rac_gets_nn(c, 7); for (ct=0; ct<3; ct++) for (pt=0; pt<2; pt++) for (cg=0; cg<6; cg++) for (node=0; node<11; node++) if (vp56_rac_get_prob(c, vp6_ract_pct[ct][pt][cg][node])) { def_prob[node] = vp56_rac_gets_nn(c, 7); model->coeff_ract[pt][ct][cg][node] = def_prob[node]; } else if (s->framep[VP56_FRAME_CURRENT]->key_frame) { model->coeff_ract[pt][ct][cg][node] = def_prob[node]; } if (s->use_huffman) { for (pt=0; pt<2; pt++) { vp6_build_huff_tree(s, model->coeff_dccv[pt], vp6_huff_coeff_map, 12, &s->dccv_vlc[pt]); vp6_build_huff_tree(s, model->coeff_runv[pt], vp6_huff_run_map, 9, &s->runv_vlc[pt]); for (ct=0; ct<3; ct++) for (cg = 0; cg < 6; cg++) vp6_build_huff_tree(s, model->coeff_ract[pt][ct][cg], vp6_huff_coeff_map, 12, &s->ract_vlc[pt][ct][cg]); } memset(s->nb_null, 0, sizeof(s->nb_null)); } else { /* coeff_dcct is a linear combination of coeff_dccv */ for (pt=0; pt<2; pt++) for (ctx=0; ctx<3; ctx++) for (node=0; node<5; node++) model->coeff_dcct[pt][ctx][node] = av_clip(((model->coeff_dccv[pt][node] * vp6_dccv_lc[ctx][node][0] + 128) >> 8) + vp6_dccv_lc[ctx][node][1], 1, 255); } }