unsigned char vp9_get_pred_context_tx_size(const MACROBLOCKD *xd) { const MODE_INFO *const above_mi = get_above_mi(xd); const MODE_INFO *const left_mi = get_left_mi(xd); const MB_MODE_INFO *const above_mbmi = get_above_mbmi(above_mi); const MB_MODE_INFO *const left_mbmi = get_left_mbmi(left_mi); const int above_in_image = above_mi != NULL; const int left_in_image = left_mi != NULL; const int max_tx_size = max_txsize_lookup[xd->mi_8x8[0]->mbmi.sb_type]; int above_context = max_tx_size; int left_context = max_tx_size; if (above_in_image) above_context = above_mbmi->skip_coeff ? max_tx_size : above_mbmi->tx_size; if (left_in_image) left_context = left_mbmi->skip_coeff ? max_tx_size : left_mbmi->tx_size; if (!left_in_image) left_context = above_context; if (!above_in_image) above_context = left_context; return above_context + left_context > max_tx_size; }
unsigned char vp9_get_pred_context_intra_inter(const MACROBLOCKD *xd) { const MODE_INFO *const above_mi = get_above_mi(xd); const MODE_INFO *const left_mi = get_left_mi(xd); const MB_MODE_INFO *const above_mbmi = get_above_mbmi(above_mi); const MB_MODE_INFO *const left_mbmi = get_left_mbmi(left_mi); const int above_in_image = above_mi != NULL; const int left_in_image = left_mi != NULL; const int above_intra = above_in_image ? !is_inter_block(above_mbmi) : 1; const int left_intra = left_in_image ? !is_inter_block(left_mbmi) : 1; if (above_in_image && left_in_image) return left_intra && above_intra ? 3 : left_intra || above_intra; else if (above_in_image || left_in_image) return 2 * (above_in_image ? above_intra : left_intra); else return 0; }
unsigned char vp9_get_pred_context_switchable_interp(const MACROBLOCKD *xd) { const MODE_INFO *const above_mi = get_above_mi(xd); const MODE_INFO *const left_mi = get_left_mi(xd); const int above_in_image = above_mi != NULL; const int left_in_image = left_mi != NULL; const int left_mv_pred = left_in_image ? is_inter_block(&left_mi->mbmi) : 0; const int left_interp = left_in_image && left_mv_pred ? left_mi->mbmi.interp_filter : SWITCHABLE_FILTERS; const int above_mv_pred = above_in_image ? is_inter_block(&above_mi->mbmi) : 0; const int above_interp = above_in_image && above_mv_pred ? above_mi->mbmi.interp_filter : SWITCHABLE_FILTERS; if (left_interp == above_interp) return left_interp; else if (left_interp == SWITCHABLE_FILTERS && above_interp != SWITCHABLE_FILTERS) return above_interp; else if (left_interp != SWITCHABLE_FILTERS && above_interp == SWITCHABLE_FILTERS) return left_interp; else return SWITCHABLE_FILTERS; }
// The mode info data structure has a one element border above and to the // left of the entries corresponding to real macroblocks. // The prediction flags in these dummy entries are initialized to 0. // 0 - inter/inter, inter/--, --/inter, --/-- // 1 - intra/inter, inter/intra // 2 - intra/--, --/intra // 3 - intra/intra int vp9_get_intra_inter_context(const MACROBLOCKD *xd) { const MB_MODE_INFO *const above_mbmi = get_mbmi(get_above_mi(xd)); const MB_MODE_INFO *const left_mbmi = get_mbmi(get_left_mi(xd)); const int has_above = above_mbmi != NULL; const int has_left = left_mbmi != NULL; if (has_above && has_left) { // both edges available const int above_intra = !is_inter_block(above_mbmi); const int left_intra = !is_inter_block(left_mbmi); return left_intra && above_intra ? 3 : left_intra || above_intra; } else if (has_above || has_left) { // one edge available return 2 * !is_inter_block(has_above ? above_mbmi : left_mbmi); } else { return 0; } }
// Returns a context number for the given MB prediction signal // The mode info data structure has a one element border above and to the // left of the entries corresponding to real blocks. // The prediction flags in these dummy entries are initialized to 0. int vp9_get_tx_size_context(const MACROBLOCKD *xd) { const int max_tx_size = max_txsize_lookup[xd->mi_8x8[0]->mbmi.sb_type]; const MB_MODE_INFO *const above_mbmi = get_mbmi(get_above_mi(xd)); const MB_MODE_INFO *const left_mbmi = get_mbmi(get_left_mi(xd)); const int has_above = above_mbmi != NULL; const int has_left = left_mbmi != NULL; int above_ctx = (has_above && !above_mbmi->skip_coeff) ? above_mbmi->tx_size : max_tx_size; int left_ctx = (has_left && !left_mbmi->skip_coeff) ? left_mbmi->tx_size : max_tx_size; if (!has_left) left_ctx = above_ctx; if (!has_above) above_ctx = left_ctx; return (above_ctx + left_ctx) > max_tx_size; }
unsigned char vp9_get_pred_context_comp_inter_inter(const VP9_COMMON *cm, const MACROBLOCKD *xd) { int pred_context; const MODE_INFO *const above_mi = get_above_mi(xd); const MODE_INFO *const left_mi = get_left_mi(xd); const MB_MODE_INFO *const above_mbmi = get_above_mbmi(above_mi); const MB_MODE_INFO *const left_mbmi = get_left_mbmi(left_mi); const int above_in_image = above_mi != NULL; const int left_in_image = left_mi != NULL; if (above_in_image && left_in_image) { if (!has_second_ref(above_mbmi) && !has_second_ref(left_mbmi)) pred_context = (above_mbmi->ref_frame[0] == cm->comp_fixed_ref) ^ (left_mbmi->ref_frame[0] == cm->comp_fixed_ref); else if (!has_second_ref(above_mbmi)) pred_context = 2 + (above_mbmi->ref_frame[0] == cm->comp_fixed_ref || !is_inter_block(above_mbmi)); else if (!has_second_ref(left_mbmi)) pred_context = 2 + (left_mbmi->ref_frame[0] == cm->comp_fixed_ref || !is_inter_block(left_mbmi)); else pred_context = 4; } else if (above_in_image || left_in_image) { const MB_MODE_INFO *edge_mbmi = above_in_image ? above_mbmi : left_mbmi; if (!has_second_ref(edge_mbmi)) pred_context = edge_mbmi->ref_frame[0] == cm->comp_fixed_ref; else pred_context = 3; } else { pred_context = 1; } assert(pred_context >= 0 && pred_context < COMP_INTER_CONTEXTS); return pred_context; }
int vp9_get_reference_mode_context(const VP9_COMMON *cm, const MACROBLOCKD *xd) { int ctx; const MB_MODE_INFO *const above_mbmi = get_mbmi(get_above_mi(xd)); const MB_MODE_INFO *const left_mbmi = get_mbmi(get_left_mi(xd)); const int has_above = above_mbmi != NULL; const int has_left = left_mbmi != NULL; // Note: // The mode info data structure has a one element border above and to the // left of the entries correpsonding to real macroblocks. // The prediction flags in these dummy entries are initialised to 0. if (has_above && has_left) { // both edges available if (!has_second_ref(above_mbmi) && !has_second_ref(left_mbmi)) // neither edge uses comp pred (0/1) ctx = (above_mbmi->ref_frame[0] == cm->comp_fixed_ref) ^ (left_mbmi->ref_frame[0] == cm->comp_fixed_ref); else if (!has_second_ref(above_mbmi)) // one of two edges uses comp pred (2/3) ctx = 2 + (above_mbmi->ref_frame[0] == cm->comp_fixed_ref || !is_inter_block(above_mbmi)); else if (!has_second_ref(left_mbmi)) // one of two edges uses comp pred (2/3) ctx = 2 + (left_mbmi->ref_frame[0] == cm->comp_fixed_ref || !is_inter_block(left_mbmi)); else // both edges use comp pred (4) ctx = 4; } else if (has_above || has_left) { // one edge available const MB_MODE_INFO *edge_mbmi = has_above ? above_mbmi : left_mbmi; if (!has_second_ref(edge_mbmi)) // edge does not use comp pred (0/1) ctx = edge_mbmi->ref_frame[0] == cm->comp_fixed_ref; else // edge uses comp pred (3) ctx = 3; } else { // no edges available (1) ctx = 1; } assert(ctx >= 0 && ctx < COMP_INTER_CONTEXTS); return ctx; }
// Returns a context number for the given MB prediction signal int vp9_get_pred_context_switchable_interp(const MACROBLOCKD *xd) { // Note: // The mode info data structure has a one element border above and to the // left of the entries correpsonding to real macroblocks. // The prediction flags in these dummy entries are initialised to 0. const MB_MODE_INFO *const left_mbmi = get_mbmi(get_left_mi(xd)); const int left_type = left_mbmi != NULL && is_inter_block(left_mbmi) ? left_mbmi->interp_filter : SWITCHABLE_FILTERS; const MB_MODE_INFO *const above_mbmi = get_mbmi(get_above_mi(xd)); const int above_type = above_mbmi != NULL && is_inter_block(above_mbmi) ? above_mbmi->interp_filter : SWITCHABLE_FILTERS; if (left_type == above_type) return left_type; else if (left_type == SWITCHABLE_FILTERS && above_type != SWITCHABLE_FILTERS) return above_type; else if (left_type != SWITCHABLE_FILTERS && above_type == SWITCHABLE_FILTERS) return left_type; else return SWITCHABLE_FILTERS; }
unsigned char vp9_get_pred_context_single_ref_p2(const MACROBLOCKD *xd) { int pred_context; const MODE_INFO *const above_mi = get_above_mi(xd); const MODE_INFO *const left_mi = get_left_mi(xd); const MB_MODE_INFO *const above_mbmi = get_above_mbmi(above_mi); const MB_MODE_INFO *const left_mbmi = get_left_mbmi(left_mi); const int above_in_image = above_mi != NULL; const int left_in_image = left_mi != NULL; const int above_intra = above_in_image ? !is_inter_block(above_mbmi) : 1; const int left_intra = left_in_image ? !is_inter_block(left_mbmi) : 1; if (above_in_image && left_in_image) { if (above_intra && left_intra) { pred_context = 2; } else if (above_intra || left_intra) { const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi; if (!has_second_ref(edge_mbmi)) { if (edge_mbmi->ref_frame[0] == LAST_FRAME) pred_context = 3; else pred_context = 4 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME); } else { pred_context = 1 + 2 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME || edge_mbmi->ref_frame[1] == GOLDEN_FRAME); } } else { if (!has_second_ref(above_mbmi) && !has_second_ref(left_mbmi)) { if (above_mbmi->ref_frame[0] == LAST_FRAME && left_mbmi->ref_frame[0] == LAST_FRAME) { pred_context = 3; } else if (above_mbmi->ref_frame[0] == LAST_FRAME || left_mbmi->ref_frame[0] == LAST_FRAME) { const MB_MODE_INFO *edge_mbmi = above_mbmi->ref_frame[0] == LAST_FRAME ? left_mbmi : above_mbmi; pred_context = 4 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME); } else { pred_context = 2 * (above_mbmi->ref_frame[0] == GOLDEN_FRAME) + 2 * (left_mbmi->ref_frame[0] == GOLDEN_FRAME); } } else if (has_second_ref(above_mbmi) && has_second_ref(left_mbmi)) { if (above_mbmi->ref_frame[0] == left_mbmi->ref_frame[0] && above_mbmi->ref_frame[1] == left_mbmi->ref_frame[1]) pred_context = 3 * (above_mbmi->ref_frame[0] == GOLDEN_FRAME || above_mbmi->ref_frame[1] == GOLDEN_FRAME || left_mbmi->ref_frame[0] == GOLDEN_FRAME || left_mbmi->ref_frame[1] == GOLDEN_FRAME); else pred_context = 2; } else { const MV_REFERENCE_FRAME rfs = !has_second_ref(above_mbmi) ? above_mbmi->ref_frame[0] : left_mbmi->ref_frame[0]; const MV_REFERENCE_FRAME crf1 = has_second_ref(above_mbmi) ? above_mbmi->ref_frame[0] : left_mbmi->ref_frame[0]; const MV_REFERENCE_FRAME crf2 = has_second_ref(above_mbmi) ? above_mbmi->ref_frame[1] : left_mbmi->ref_frame[1]; if (rfs == GOLDEN_FRAME) pred_context = 3 + (crf1 == GOLDEN_FRAME || crf2 == GOLDEN_FRAME); else if (rfs == ALTREF_FRAME) pred_context = crf1 == GOLDEN_FRAME || crf2 == GOLDEN_FRAME; else pred_context = 1 + 2 * (crf1 == GOLDEN_FRAME || crf2 == GOLDEN_FRAME); } } } else if (above_in_image || left_in_image) { const MB_MODE_INFO *edge_mbmi = above_in_image ? above_mbmi : left_mbmi; if (!is_inter_block(edge_mbmi) || (edge_mbmi->ref_frame[0] == LAST_FRAME && !has_second_ref(edge_mbmi))) pred_context = 2; else if (!has_second_ref(edge_mbmi)) pred_context = 4 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME); else pred_context = 3 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME || edge_mbmi->ref_frame[1] == GOLDEN_FRAME); } else { pred_context = 2; } assert(pred_context >= 0 && pred_context < REF_CONTEXTS); return pred_context; }
unsigned char vp9_get_pred_context_comp_ref_p(const VP9_COMMON *cm, const MACROBLOCKD *xd) { int pred_context; const MODE_INFO *const above_mi = get_above_mi(xd); const MODE_INFO *const left_mi = get_left_mi(xd); const MB_MODE_INFO *const above_mbmi = get_above_mbmi(above_mi); const MB_MODE_INFO *const left_mbmi = get_left_mbmi(left_mi); const int above_in_image = above_mi != NULL; const int left_in_image = left_mi != NULL; const int above_intra = above_in_image ? !is_inter_block(above_mbmi) : 1; const int left_intra = left_in_image ? !is_inter_block(left_mbmi) : 1; const int fix_ref_idx = cm->ref_frame_sign_bias[cm->comp_fixed_ref]; const int var_ref_idx = !fix_ref_idx; if (above_in_image && left_in_image) { if (above_intra && left_intra) { pred_context = 2; } else if (above_intra || left_intra) { const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi; if (!has_second_ref(edge_mbmi)) pred_context = 1 + 2 * (edge_mbmi->ref_frame[0] != cm->comp_var_ref[1]); else pred_context = 1 + 2 * (edge_mbmi->ref_frame[var_ref_idx] != cm->comp_var_ref[1]); } else { const int l_sg = !has_second_ref(left_mbmi); const int a_sg = !has_second_ref(above_mbmi); MV_REFERENCE_FRAME vrfa = a_sg ? above_mbmi->ref_frame[0] : above_mbmi->ref_frame[var_ref_idx]; MV_REFERENCE_FRAME vrfl = l_sg ? left_mbmi->ref_frame[0] : left_mbmi->ref_frame[var_ref_idx]; if (vrfa == vrfl && cm->comp_var_ref[1] == vrfa) { pred_context = 0; } else if (l_sg && a_sg) { if ((vrfa == cm->comp_fixed_ref && vrfl == cm->comp_var_ref[0]) || (vrfl == cm->comp_fixed_ref && vrfa == cm->comp_var_ref[0])) pred_context = 4; else if (vrfa == vrfl) pred_context = 3; else pred_context = 1; } else if (l_sg || a_sg) { MV_REFERENCE_FRAME vrfc = l_sg ? vrfa : vrfl; MV_REFERENCE_FRAME rfs = a_sg ? vrfa : vrfl; if (vrfc == cm->comp_var_ref[1] && rfs != cm->comp_var_ref[1]) pred_context = 1; else if (rfs == cm->comp_var_ref[1] && vrfc != cm->comp_var_ref[1]) pred_context = 2; else pred_context = 4; } else if (vrfa == vrfl) { pred_context = 4; } else { pred_context = 2; } } } else if (above_in_image || left_in_image) { const MB_MODE_INFO *edge_mbmi = above_in_image ? above_mbmi : left_mbmi; if (!is_inter_block(edge_mbmi)) { pred_context = 2; } else { if (has_second_ref(edge_mbmi)) pred_context = 4 * (edge_mbmi->ref_frame[var_ref_idx] != cm->comp_var_ref[1]); else pred_context = 3 * (edge_mbmi->ref_frame[0] != cm->comp_var_ref[1]); } } else { pred_context = 2; } assert(pred_context >= 0 && pred_context < REF_CONTEXTS); return pred_context; }
int vp9_get_pred_context_single_ref_p2(const MACROBLOCKD *xd) { int pred_context; const MB_MODE_INFO *const above_mbmi = get_mbmi(get_above_mi(xd)); const MB_MODE_INFO *const left_mbmi = get_mbmi(get_left_mi(xd)); const int has_above = above_mbmi != NULL; const int has_left = left_mbmi != NULL; // Note: // The mode info data structure has a one element border above and to the // left of the entries correpsonding to real macroblocks. // The prediction flags in these dummy entries are initialised to 0. if (has_above && has_left) { // both edges available const int above_intra = !is_inter_block(above_mbmi); const int left_intra = !is_inter_block(left_mbmi); if (above_intra && left_intra) { // intra/intra pred_context = 2; } else if (above_intra || left_intra) { // intra/inter or inter/intra const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi; if (!has_second_ref(edge_mbmi)) { if (edge_mbmi->ref_frame[0] == LAST_FRAME) pred_context = 3; else pred_context = 4 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME); } else { pred_context = 1 + 2 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME || edge_mbmi->ref_frame[1] == GOLDEN_FRAME); } } else { // inter/inter const int above_has_second = has_second_ref(above_mbmi); const int left_has_second = has_second_ref(left_mbmi); if (above_has_second && left_has_second) { if (above_mbmi->ref_frame[0] == left_mbmi->ref_frame[0] && above_mbmi->ref_frame[1] == left_mbmi->ref_frame[1]) pred_context = 3 * (above_mbmi->ref_frame[0] == GOLDEN_FRAME || above_mbmi->ref_frame[1] == GOLDEN_FRAME || left_mbmi->ref_frame[0] == GOLDEN_FRAME || left_mbmi->ref_frame[1] == GOLDEN_FRAME); else pred_context = 2; } else if (above_has_second || left_has_second) { const MV_REFERENCE_FRAME rfs = !above_has_second ? above_mbmi->ref_frame[0] : left_mbmi->ref_frame[0]; const MV_REFERENCE_FRAME crf1 = above_has_second ? above_mbmi->ref_frame[0] : left_mbmi->ref_frame[0]; const MV_REFERENCE_FRAME crf2 = above_has_second ? above_mbmi->ref_frame[1] : left_mbmi->ref_frame[1]; if (rfs == GOLDEN_FRAME) pred_context = 3 + (crf1 == GOLDEN_FRAME || crf2 == GOLDEN_FRAME); else if (rfs == ALTREF_FRAME) pred_context = crf1 == GOLDEN_FRAME || crf2 == GOLDEN_FRAME; else pred_context = 1 + 2 * (crf1 == GOLDEN_FRAME || crf2 == GOLDEN_FRAME); } else { if (above_mbmi->ref_frame[0] == LAST_FRAME && left_mbmi->ref_frame[0] == LAST_FRAME) { pred_context = 3; } else if (above_mbmi->ref_frame[0] == LAST_FRAME || left_mbmi->ref_frame[0] == LAST_FRAME) { const MB_MODE_INFO *edge_mbmi = above_mbmi->ref_frame[0] == LAST_FRAME ? left_mbmi : above_mbmi; pred_context = 4 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME); } else { pred_context = 2 * (above_mbmi->ref_frame[0] == GOLDEN_FRAME) + 2 * (left_mbmi->ref_frame[0] == GOLDEN_FRAME); } } } } else if (has_above || has_left) { // one edge available const MB_MODE_INFO *edge_mbmi = has_above ? above_mbmi : left_mbmi; if (!is_inter_block(edge_mbmi) || (edge_mbmi->ref_frame[0] == LAST_FRAME && !has_second_ref(edge_mbmi))) pred_context = 2; else if (!has_second_ref(edge_mbmi)) pred_context = 4 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME); else pred_context = 3 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME || edge_mbmi->ref_frame[1] == GOLDEN_FRAME); } else { // no edges available (2) pred_context = 2; } assert(pred_context >= 0 && pred_context < REF_CONTEXTS); return pred_context; }
// Returns a context number for the given MB prediction signal int vp9_get_pred_context_comp_ref_p(const VP9_COMMON *cm, const MACROBLOCKD *xd) { int pred_context; const MB_MODE_INFO *const above_mbmi = get_mbmi(get_above_mi(xd)); const MB_MODE_INFO *const left_mbmi = get_mbmi(get_left_mi(xd)); const int above_in_image = above_mbmi != NULL; const int left_in_image = left_mbmi != NULL; // Note: // The mode info data structure has a one element border above and to the // left of the entries correpsonding to real macroblocks. // The prediction flags in these dummy entries are initialised to 0. const int fix_ref_idx = cm->ref_frame_sign_bias[cm->comp_fixed_ref]; const int var_ref_idx = !fix_ref_idx; if (above_in_image && left_in_image) { // both edges available const int above_intra = !is_inter_block(above_mbmi); const int left_intra = !is_inter_block(left_mbmi); if (above_intra && left_intra) { // intra/intra (2) pred_context = 2; } else if (above_intra || left_intra) { // intra/inter const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi; if (!has_second_ref(edge_mbmi)) // single pred (1/3) pred_context = 1 + 2 * (edge_mbmi->ref_frame[0] != cm->comp_var_ref[1]); else // comp pred (1/3) pred_context = 1 + 2 * (edge_mbmi->ref_frame[var_ref_idx] != cm->comp_var_ref[1]); } else { // inter/inter const int l_sg = !has_second_ref(left_mbmi); const int a_sg = !has_second_ref(above_mbmi); const MV_REFERENCE_FRAME vrfa = a_sg ? above_mbmi->ref_frame[0] : above_mbmi->ref_frame[var_ref_idx]; const MV_REFERENCE_FRAME vrfl = l_sg ? left_mbmi->ref_frame[0] : left_mbmi->ref_frame[var_ref_idx]; if (vrfa == vrfl && cm->comp_var_ref[1] == vrfa) { pred_context = 0; } else if (l_sg && a_sg) { // single/single if ((vrfa == cm->comp_fixed_ref && vrfl == cm->comp_var_ref[0]) || (vrfl == cm->comp_fixed_ref && vrfa == cm->comp_var_ref[0])) pred_context = 4; else if (vrfa == vrfl) pred_context = 3; else pred_context = 1; } else if (l_sg || a_sg) { // single/comp const MV_REFERENCE_FRAME vrfc = l_sg ? vrfa : vrfl; const MV_REFERENCE_FRAME rfs = a_sg ? vrfa : vrfl; if (vrfc == cm->comp_var_ref[1] && rfs != cm->comp_var_ref[1]) pred_context = 1; else if (rfs == cm->comp_var_ref[1] && vrfc != cm->comp_var_ref[1]) pred_context = 2; else pred_context = 4; } else if (vrfa == vrfl) { // comp/comp pred_context = 4; } else { pred_context = 2; } } } else if (above_in_image || left_in_image) { // one edge available const MB_MODE_INFO *edge_mbmi = above_in_image ? above_mbmi : left_mbmi; if (!is_inter_block(edge_mbmi)) { pred_context = 2; } else { if (has_second_ref(edge_mbmi)) pred_context = 4 * (edge_mbmi->ref_frame[var_ref_idx] != cm->comp_var_ref[1]); else pred_context = 3 * (edge_mbmi->ref_frame[0] != cm->comp_var_ref[1]); } } else { // no edges available (2) pred_context = 2; } assert(pred_context >= 0 && pred_context < REF_CONTEXTS); return pred_context; }