| /* |
| * Copyright (c) 2016, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| * Media Patent License 1.0 was not distributed with this source code in the |
| * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| */ |
| #include "av1/common/common.h" |
| #include "av1/common/pred_common.h" |
| #include "av1/common/seg_common.h" |
| |
| // Returns a context number for the given MB prediction signal |
| int av1_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 = xd->left_mbmi; |
| const int left_type = xd->left_available && is_inter_block(left_mbmi) |
| ? left_mbmi->interp_filter |
| : SWITCHABLE_FILTERS; |
| const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; |
| const int above_type = xd->up_available && 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; |
| } |
| |
| // 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 av1_get_intra_inter_context(const MACROBLOCKD *xd) { |
| const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; |
| const MB_MODE_INFO *const left_mbmi = xd->left_mbmi; |
| const int has_above = xd->up_available; |
| const int has_left = xd->left_available; |
| |
| 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; |
| } |
| } |
| |
| #if CONFIG_EXT_REFS |
| #define CHECK_BWDREF_OR_ALTREF(ref_frame) \ |
| (((ref_frame) == BWDREF_FRAME) || ((ref_frame) == ALTREF_FRAME)) |
| |
| #define IS_BWD_PRED_REF_FRAME(ref_frame) CHECK_BWDREF_OR_ALTREF(ref_frame) |
| #else |
| #define IS_BWD_PRED_REF_FRAME(ref_frame) ((ref_frame) == cm->comp_fixed_ref) |
| #endif // CONFIG_EXT_REFS |
| |
| int av1_get_reference_mode_context(const AV1_COMMON *cm, |
| const MACROBLOCKD *xd) { |
| int ctx; |
| const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; |
| const MB_MODE_INFO *const left_mbmi = xd->left_mbmi; |
| const int has_above = xd->up_available; |
| const int has_left = xd->left_available; |
| |
| #if CONFIG_EXT_REFS |
| (void)cm; |
| #endif // CONFIG_EXT_REFS |
| |
| // Note: |
| // 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. |
| 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 = IS_BWD_PRED_REF_FRAME(above_mbmi->ref_frame[0]) ^ |
| IS_BWD_PRED_REF_FRAME(left_mbmi->ref_frame[0]); |
| else if (!has_second_ref(above_mbmi)) |
| // one of two edges uses comp pred (2/3) |
| ctx = 2 + (IS_BWD_PRED_REF_FRAME(above_mbmi->ref_frame[0]) || |
| !is_inter_block(above_mbmi)); |
| else if (!has_second_ref(left_mbmi)) |
| // one of two edges uses comp pred (2/3) |
| ctx = 2 + (IS_BWD_PRED_REF_FRAME(left_mbmi->ref_frame[0]) || |
| !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 = IS_BWD_PRED_REF_FRAME(edge_mbmi->ref_frame[0]); |
| else |
| // edge uses comp pred (3) |
| ctx = 3; |
| } else { // no edges available (1) |
| ctx = 1; |
| } |
| assert(ctx >= 0 && ctx < COMP_INTER_CONTEXTS); |
| return ctx; |
| } |
| |
| #if CONFIG_EXT_REFS |
| |
| // TODO(zoeliu): Future work will be conducted to optimize the context design |
| // for the coding of the reference frames. |
| |
| #define CHECK_LAST_OR_LAST2(ref_frame) \ |
| ((ref_frame == LAST_FRAME) || (ref_frame == LAST2_FRAME)) |
| |
| #define CHECK_GOLDEN_OR_LAST3(ref_frame) \ |
| ((ref_frame == GOLDEN_FRAME) || (ref_frame == LAST3_FRAME)) |
| |
| // Returns a context number for the given MB prediction signal |
| // Signal the first reference frame for a compound mode be either GOLDEN/LAST3, |
| // or LAST/LAST2. |
| // |
| // NOTE: The probability of ref_frame[0] is either GOLDEN_FRAME or LAST3_FRAME. |
| int av1_get_pred_context_comp_fwdref_p(const AV1_COMMON *cm, |
| const MACROBLOCKD *xd) { |
| int pred_context; |
| const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; |
| const MB_MODE_INFO *const left_mbmi = xd->left_mbmi; |
| const int above_in_image = xd->up_available; |
| const int left_in_image = xd->left_available; |
| |
| // 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 bwd_ref_sign_idx = cm->ref_frame_sign_bias[cm->comp_bwd_ref[0]]; |
| const int fwd_ref_sign_idx = !bwd_ref_sign_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 * (!CHECK_GOLDEN_OR_LAST3(edge_mbmi->ref_frame[0])); |
| else // comp pred (1/3) |
| pred_context = 1 + |
| 2 * (!CHECK_GOLDEN_OR_LAST3( |
| edge_mbmi->ref_frame[fwd_ref_sign_idx])); |
| } 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 frfa = |
| a_sg ? above_mbmi->ref_frame[0] |
| : above_mbmi->ref_frame[fwd_ref_sign_idx]; |
| const MV_REFERENCE_FRAME frfl = |
| l_sg ? left_mbmi->ref_frame[0] |
| : left_mbmi->ref_frame[fwd_ref_sign_idx]; |
| |
| if (frfa == frfl && CHECK_GOLDEN_OR_LAST3(frfa)) { |
| pred_context = 0; |
| } else if (l_sg && a_sg) { // single/single |
| if ((CHECK_BWDREF_OR_ALTREF(frfa) && CHECK_LAST_OR_LAST2(frfl)) || |
| (CHECK_BWDREF_OR_ALTREF(frfl) && CHECK_LAST_OR_LAST2(frfa))) { |
| pred_context = 4; |
| } else if (CHECK_GOLDEN_OR_LAST3(frfa) || CHECK_GOLDEN_OR_LAST3(frfl)) { |
| pred_context = 1; |
| } else { |
| pred_context = 3; |
| } |
| } else if (l_sg || a_sg) { // single/comp |
| const MV_REFERENCE_FRAME frfc = l_sg ? frfa : frfl; |
| const MV_REFERENCE_FRAME rfs = a_sg ? frfa : frfl; |
| |
| if (CHECK_GOLDEN_OR_LAST3(frfc) && !CHECK_GOLDEN_OR_LAST3(rfs)) |
| pred_context = 1; |
| else if (CHECK_GOLDEN_OR_LAST3(rfs) && !CHECK_GOLDEN_OR_LAST3(frfc)) |
| pred_context = 2; |
| else |
| pred_context = 4; |
| } else { // comp/comp |
| if ((CHECK_LAST_OR_LAST2(frfa) && CHECK_LAST_OR_LAST2(frfl))) { |
| pred_context = 4; |
| } else { |
| // NOTE(zoeliu): Following assert may be removed once confirmed. |
| assert(CHECK_GOLDEN_OR_LAST3(frfa) || CHECK_GOLDEN_OR_LAST3(frfl)); |
| 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 * |
| (!CHECK_GOLDEN_OR_LAST3(edge_mbmi->ref_frame[fwd_ref_sign_idx])); |
| else |
| pred_context = 3 * (!CHECK_GOLDEN_OR_LAST3(edge_mbmi->ref_frame[0])); |
| } |
| } 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 |
| // Signal the first reference frame for a compound mode be LAST, conditioning |
| // on that it is known either LAST/LAST2. |
| // |
| // NOTE: The probability of ref_frame[0] is LAST_FRAME, conditioning on it is |
| // either LAST_FRAME or LAST2_FRAME. |
| int av1_get_pred_context_comp_fwdref_p1(const AV1_COMMON *cm, |
| const MACROBLOCKD *xd) { |
| int pred_context; |
| const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; |
| const MB_MODE_INFO *const left_mbmi = xd->left_mbmi; |
| const int above_in_image = xd->up_available; |
| const int left_in_image = xd->left_available; |
| |
| // 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 bwd_ref_sign_idx = cm->ref_frame_sign_bias[cm->comp_bwd_ref[0]]; |
| const int fwd_ref_sign_idx = !bwd_ref_sign_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] != LAST_FRAME); |
| else // comp pred (1/3) |
| pred_context = |
| 1 + 2 * (edge_mbmi->ref_frame[fwd_ref_sign_idx] != LAST_FRAME); |
| } 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 frfa = |
| a_sg ? above_mbmi->ref_frame[0] |
| : above_mbmi->ref_frame[fwd_ref_sign_idx]; |
| const MV_REFERENCE_FRAME frfl = |
| l_sg ? left_mbmi->ref_frame[0] |
| : left_mbmi->ref_frame[fwd_ref_sign_idx]; |
| |
| if (frfa == frfl && frfa == LAST_FRAME) |
| pred_context = 0; |
| else if (l_sg && a_sg) { // single/single |
| if (frfa == LAST_FRAME || frfl == LAST_FRAME) |
| pred_context = 1; |
| else if (CHECK_GOLDEN_OR_LAST3(frfa) || CHECK_GOLDEN_OR_LAST3(frfl)) |
| pred_context = 2 + (frfa != frfl); |
| else if (frfa == frfl || |
| (CHECK_BWDREF_OR_ALTREF(frfa) && CHECK_BWDREF_OR_ALTREF(frfl))) |
| pred_context = 3; |
| else |
| pred_context = 4; |
| } else if (l_sg || a_sg) { // single/comp |
| const MV_REFERENCE_FRAME frfc = l_sg ? frfa : frfl; |
| const MV_REFERENCE_FRAME rfs = a_sg ? frfa : frfl; |
| |
| if (frfc == LAST_FRAME && rfs != LAST_FRAME) |
| pred_context = 1; |
| else if (rfs == LAST_FRAME && frfc != LAST_FRAME) |
| pred_context = 2; |
| else |
| pred_context = |
| 3 + (frfc == LAST2_FRAME || CHECK_GOLDEN_OR_LAST3(rfs)); |
| } else { // comp/comp |
| if (frfa == LAST_FRAME || frfl == LAST_FRAME) |
| pred_context = 2; |
| else |
| pred_context = |
| 3 + (CHECK_GOLDEN_OR_LAST3(frfa) || CHECK_GOLDEN_OR_LAST3(frfl)); |
| } |
| } |
| } 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[fwd_ref_sign_idx] != LAST_FRAME); |
| } else { |
| if (edge_mbmi->ref_frame[0] == LAST_FRAME) |
| pred_context = 0; |
| else |
| pred_context = 2 + CHECK_GOLDEN_OR_LAST3(edge_mbmi->ref_frame[0]); |
| } |
| } |
| } 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 |
| // Signal the first reference frame for a compound mode be GOLDEN, conditioning |
| // on that it is known either GOLDEN or LAST3. |
| // |
| // NOTE: The probability of ref_frame[0] is GOLDEN_FRAME, conditioning on it is |
| // either GOLDEN or LAST3. |
| int av1_get_pred_context_comp_fwdref_p2(const AV1_COMMON *cm, |
| const MACROBLOCKD *xd) { |
| int pred_context; |
| const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; |
| const MB_MODE_INFO *const left_mbmi = xd->left_mbmi; |
| const int above_in_image = xd->up_available; |
| const int left_in_image = xd->left_available; |
| |
| // 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 bwd_ref_sign_idx = cm->ref_frame_sign_bias[cm->comp_bwd_ref[0]]; |
| const int fwd_ref_sign_idx = !bwd_ref_sign_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] != GOLDEN_FRAME); |
| else // comp pred (1/3) |
| pred_context = |
| 1 + 2 * (edge_mbmi->ref_frame[fwd_ref_sign_idx] != GOLDEN_FRAME); |
| } 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 frfa = |
| a_sg ? above_mbmi->ref_frame[0] |
| : above_mbmi->ref_frame[fwd_ref_sign_idx]; |
| const MV_REFERENCE_FRAME frfl = |
| l_sg ? left_mbmi->ref_frame[0] |
| : left_mbmi->ref_frame[fwd_ref_sign_idx]; |
| |
| if (frfa == frfl && frfa == GOLDEN_FRAME) |
| pred_context = 0; |
| else if (l_sg && a_sg) { // single/single |
| if (frfa == GOLDEN_FRAME || frfl == GOLDEN_FRAME) |
| pred_context = 1; |
| else if (CHECK_LAST_OR_LAST2(frfa) || CHECK_LAST_OR_LAST2(frfl)) |
| pred_context = 2 + (frfa != frfl); |
| else if (frfa == frfl || |
| (CHECK_BWDREF_OR_ALTREF(frfa) && CHECK_BWDREF_OR_ALTREF(frfl))) |
| pred_context = 3; |
| else |
| pred_context = 4; |
| } else if (l_sg || a_sg) { // single/comp |
| const MV_REFERENCE_FRAME frfc = l_sg ? frfa : frfl; |
| const MV_REFERENCE_FRAME rfs = a_sg ? frfa : frfl; |
| |
| if (frfc == GOLDEN_FRAME && rfs != GOLDEN_FRAME) |
| pred_context = 1; |
| else if (rfs == GOLDEN_FRAME && frfc != GOLDEN_FRAME) |
| pred_context = 2; |
| else |
| pred_context = 3 + (frfc == LAST3_FRAME || CHECK_LAST_OR_LAST2(rfs)); |
| } else { // comp/comp |
| if (frfa == GOLDEN_FRAME || frfl == GOLDEN_FRAME) |
| pred_context = 2; |
| else |
| pred_context = |
| 3 + (CHECK_LAST_OR_LAST2(frfa) || CHECK_LAST_OR_LAST2(frfl)); |
| } |
| } |
| } 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[fwd_ref_sign_idx] != GOLDEN_FRAME); |
| } else { |
| if (edge_mbmi->ref_frame[0] == GOLDEN_FRAME) |
| pred_context = 0; |
| else |
| pred_context = 2 + CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[0]); |
| } |
| } |
| } 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 |
| // Signal the second reference frame for a compound mode be ALTREF, conditioning |
| // on that it is known either ALTREF or BWDREF. |
| // |
| // NOTE: The probability of ref_frame[1] is ALTREF_FRAME, conditioning on it is |
| // either ALTREF or BWDREF. |
| int av1_get_pred_context_comp_bwdref_p(const AV1_COMMON *cm, |
| const MACROBLOCKD *xd) { |
| int pred_context; |
| const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; |
| const MB_MODE_INFO *const left_mbmi = xd->left_mbmi; |
| const int above_in_image = xd->up_available; |
| const int left_in_image = xd->left_available; |
| |
| // Note: |
| // 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. |
| const int bwd_ref_sign_idx = cm->ref_frame_sign_bias[cm->comp_bwd_ref[0]]; |
| const int fwd_ref_sign_idx = !bwd_ref_sign_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[1] != cm->comp_bwd_ref[1]); |
| else // comp pred (1/3) |
| pred_context = |
| 1 + |
| 2 * (edge_mbmi->ref_frame[bwd_ref_sign_idx] != cm->comp_bwd_ref[1]); |
| } else { // inter/inter |
| const int l_comp = has_second_ref(left_mbmi); |
| const int a_comp = has_second_ref(above_mbmi); |
| |
| const MV_REFERENCE_FRAME l_brf = |
| l_comp ? left_mbmi->ref_frame[bwd_ref_sign_idx] : NONE; |
| const MV_REFERENCE_FRAME a_brf = |
| a_comp ? above_mbmi->ref_frame[bwd_ref_sign_idx] : NONE; |
| |
| const MV_REFERENCE_FRAME l_frf = |
| !l_comp ? left_mbmi->ref_frame[0] |
| : left_mbmi->ref_frame[fwd_ref_sign_idx]; |
| const MV_REFERENCE_FRAME a_frf = |
| !a_comp ? above_mbmi->ref_frame[0] |
| : above_mbmi->ref_frame[fwd_ref_sign_idx]; |
| |
| if (l_comp && a_comp) { // comp/comp |
| if (l_brf == a_brf && l_brf == cm->comp_bwd_ref[1]) { |
| pred_context = 0; |
| } else if (l_brf == cm->comp_bwd_ref[1] || |
| a_brf == cm->comp_bwd_ref[1]) { |
| pred_context = 1; |
| } else { |
| // NOTE: Backward ref should be either BWDREF or ALTREF. |
| assert(l_brf == a_brf && l_brf != cm->comp_bwd_ref[1]); |
| pred_context = 3; |
| } |
| } else if (!l_comp && !a_comp) { // single/single |
| if (l_frf == a_frf && l_frf == cm->comp_bwd_ref[1]) { |
| pred_context = 0; |
| } else if (l_frf == cm->comp_bwd_ref[1] || |
| a_frf == cm->comp_bwd_ref[1]) { |
| pred_context = 1; |
| } else if (l_frf == a_frf) { |
| pred_context = 3; |
| } else { |
| assert(l_frf != a_frf && l_frf != cm->comp_bwd_ref[1] && |
| a_frf != cm->comp_bwd_ref[1]); |
| pred_context = 4; |
| } |
| } else { // comp/single |
| assert((l_comp && !a_comp) || (!l_comp && a_comp)); |
| |
| if ((l_comp && l_brf == cm->comp_bwd_ref[1] && |
| a_frf == cm->comp_bwd_ref[1]) || |
| (a_comp && a_brf == cm->comp_bwd_ref[1] && |
| l_frf == cm->comp_bwd_ref[1])) { |
| pred_context = 1; |
| } else if ((l_comp && l_brf == cm->comp_bwd_ref[1]) || |
| (a_comp && a_brf == cm->comp_bwd_ref[1]) || |
| (!l_comp && l_frf == cm->comp_bwd_ref[1]) || |
| (!a_comp && a_frf == cm->comp_bwd_ref[1])) { |
| pred_context = 2; |
| } else { |
| pred_context = 4; |
| } |
| } |
| } |
| } 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[bwd_ref_sign_idx] != cm->comp_bwd_ref[1]); |
| } else { |
| pred_context = 3 * (edge_mbmi->ref_frame[0] != cm->comp_bwd_ref[1]); |
| } |
| } |
| } else { // no edges available (2) |
| pred_context = 2; |
| } |
| assert(pred_context >= 0 && pred_context < REF_CONTEXTS); |
| |
| return pred_context; |
| } |
| |
| #else // CONFIG_EXT_REFS |
| |
| // Returns a context number for the given MB prediction signal |
| int av1_get_pred_context_comp_ref_p(const AV1_COMMON *cm, |
| const MACROBLOCKD *xd) { |
| int pred_context; |
| const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; |
| const MB_MODE_INFO *const left_mbmi = xd->left_mbmi; |
| const int above_in_image = xd->up_available; |
| const int left_in_image = xd->left_available; |
| |
| // 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; |
| } |
| |
| #endif // CONFIG_EXT_REFS |
| |
| #if CONFIG_EXT_REFS |
| |
| // For the bit to signal whether the single reference is a ALTREF_FRAME |
| // or a BWDREF_FRAME. |
| // |
| // NOTE: The probability of ref_frame[0] is ALTREF/BWDREF. |
| int av1_get_pred_context_single_ref_p1(const MACROBLOCKD *xd) { |
| int pred_context; |
| const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; |
| const MB_MODE_INFO *const left_mbmi = xd->left_mbmi; |
| const int has_above = xd->up_available; |
| const int has_left = xd->left_available; |
| |
| // 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)) |
| pred_context = 4 * (!CHECK_BWDREF_OR_ALTREF(edge_mbmi->ref_frame[0])); |
| else |
| pred_context = 1 + (!CHECK_BWDREF_OR_ALTREF(edge_mbmi->ref_frame[0]) || |
| !CHECK_BWDREF_OR_ALTREF(edge_mbmi->ref_frame[1])); |
| } else { // inter/inter |
| const int above_has_second = has_second_ref(above_mbmi); |
| const int left_has_second = has_second_ref(left_mbmi); |
| |
| const MV_REFERENCE_FRAME above0 = above_mbmi->ref_frame[0]; |
| const MV_REFERENCE_FRAME above1 = above_mbmi->ref_frame[1]; |
| const MV_REFERENCE_FRAME left0 = left_mbmi->ref_frame[0]; |
| const MV_REFERENCE_FRAME left1 = left_mbmi->ref_frame[1]; |
| |
| if (above_has_second && left_has_second) { |
| pred_context = 1 + (!CHECK_BWDREF_OR_ALTREF(above0) || |
| !CHECK_BWDREF_OR_ALTREF(above1) || |
| !CHECK_BWDREF_OR_ALTREF(left0) || |
| !CHECK_BWDREF_OR_ALTREF(left1)); |
| } else if (above_has_second || left_has_second) { |
| const MV_REFERENCE_FRAME rfs = !above_has_second ? above0 : left0; |
| const MV_REFERENCE_FRAME crf1 = above_has_second ? above0 : left0; |
| const MV_REFERENCE_FRAME crf2 = above_has_second ? above1 : left1; |
| |
| if (!CHECK_BWDREF_OR_ALTREF(rfs)) |
| pred_context = 3 + (!CHECK_BWDREF_OR_ALTREF(crf1) || |
| !CHECK_BWDREF_OR_ALTREF(crf2)); |
| else |
| pred_context = |
| !CHECK_BWDREF_OR_ALTREF(crf1) || !CHECK_BWDREF_OR_ALTREF(crf2); |
| } else { |
| pred_context = 2 * (!CHECK_BWDREF_OR_ALTREF(above0)) + |
| 2 * (!CHECK_BWDREF_OR_ALTREF(left0)); |
| } |
| } |
| } 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)) { // intra |
| pred_context = 2; |
| } else { // inter |
| if (!has_second_ref(edge_mbmi)) |
| pred_context = 4 * (!CHECK_BWDREF_OR_ALTREF(edge_mbmi->ref_frame[0])); |
| else |
| pred_context = 1 + (!CHECK_BWDREF_OR_ALTREF(edge_mbmi->ref_frame[0]) || |
| !CHECK_BWDREF_OR_ALTREF(edge_mbmi->ref_frame[1])); |
| } |
| } else { // no edges available |
| pred_context = 2; |
| } |
| |
| assert(pred_context >= 0 && pred_context < REF_CONTEXTS); |
| return pred_context; |
| } |
| |
| // For the bit to signal whether the single reference is ALTREF_FRAME or |
| // BWDREF_FRAME, knowing that it shall be either of these 2 choices. |
| // |
| // NOTE: The probability of ref_frame[0] is ALTREF_FRAME, conditioning on it is |
| // either ALTREF_FRAME or BWDREF_FRAME. |
| int av1_get_pred_context_single_ref_p2(const MACROBLOCKD *xd) { |
| int pred_context; |
| const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; |
| const MB_MODE_INFO *const left_mbmi = xd->left_mbmi; |
| const int has_above = xd->up_available; |
| const int has_left = xd->left_available; |
| |
| // 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 (!CHECK_BWDREF_OR_ALTREF(edge_mbmi->ref_frame[0])) |
| pred_context = 3; |
| else |
| pred_context = 4 * (edge_mbmi->ref_frame[0] == BWDREF_FRAME); |
| } else { |
| pred_context = 1 + |
| 2 * (edge_mbmi->ref_frame[0] == BWDREF_FRAME || |
| edge_mbmi->ref_frame[1] == BWDREF_FRAME); |
| } |
| } else { // inter/inter |
| const int above_has_second = has_second_ref(above_mbmi); |
| const int left_has_second = has_second_ref(left_mbmi); |
| const MV_REFERENCE_FRAME above0 = above_mbmi->ref_frame[0]; |
| const MV_REFERENCE_FRAME above1 = above_mbmi->ref_frame[1]; |
| const MV_REFERENCE_FRAME left0 = left_mbmi->ref_frame[0]; |
| const MV_REFERENCE_FRAME left1 = left_mbmi->ref_frame[1]; |
| |
| if (above_has_second && left_has_second) { |
| if (above0 == left0 && above1 == left1) |
| pred_context = |
| 3 * (above0 == BWDREF_FRAME || above1 == BWDREF_FRAME || |
| left0 == BWDREF_FRAME || left1 == BWDREF_FRAME); |
| else |
| pred_context = 2; |
| } else if (above_has_second || left_has_second) { |
| const MV_REFERENCE_FRAME rfs = !above_has_second ? above0 : left0; |
| const MV_REFERENCE_FRAME crf1 = above_has_second ? above0 : left0; |
| const MV_REFERENCE_FRAME crf2 = above_has_second ? above1 : left1; |
| |
| if (rfs == BWDREF_FRAME) |
| pred_context = 3 + (crf1 == BWDREF_FRAME || crf2 == BWDREF_FRAME); |
| else if (rfs == ALTREF_FRAME) |
| pred_context = (crf1 == BWDREF_FRAME || crf2 == BWDREF_FRAME); |
| else |
| pred_context = 1 + 2 * (crf1 == BWDREF_FRAME || crf2 == BWDREF_FRAME); |
| } else { |
| if (!CHECK_BWDREF_OR_ALTREF(above0) && !CHECK_BWDREF_OR_ALTREF(left0)) { |
| pred_context = 2 + (above0 == left0); |
| } else if (!CHECK_BWDREF_OR_ALTREF(above0) || |
| !CHECK_BWDREF_OR_ALTREF(left0)) { |
| const MV_REFERENCE_FRAME edge0 = |
| !CHECK_BWDREF_OR_ALTREF(above0) ? left0 : above0; |
| pred_context = 4 * (edge0 == BWDREF_FRAME); |
| } else { |
| pred_context = |
| 2 * (above0 == BWDREF_FRAME) + 2 * (left0 == BWDREF_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) || |
| (!CHECK_BWDREF_OR_ALTREF(edge_mbmi->ref_frame[0]) && |
| !has_second_ref(edge_mbmi))) |
| pred_context = 2; |
| else if (!has_second_ref(edge_mbmi)) |
| pred_context = 4 * (edge_mbmi->ref_frame[0] == BWDREF_FRAME); |
| else |
| pred_context = 3 * (edge_mbmi->ref_frame[0] == BWDREF_FRAME || |
| edge_mbmi->ref_frame[1] == BWDREF_FRAME); |
| } else { // no edges available (2) |
| pred_context = 2; |
| } |
| |
| assert(pred_context >= 0 && pred_context < REF_CONTEXTS); |
| return pred_context; |
| } |
| |
| // For the bit to signal whether the single reference is LAST3/GOLDEN or |
| // LAST2/LAST, knowing that it shall be either of these 2 choices. |
| // |
| // NOTE: The probability of ref_frame[0] is LAST3/GOLDEN, conditioning on it is |
| // either LAST3/GOLDEN/LAST2/LAST. |
| int av1_get_pred_context_single_ref_p3(const MACROBLOCKD *xd) { |
| int pred_context; |
| const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; |
| const MB_MODE_INFO *const left_mbmi = xd->left_mbmi; |
| const int has_above = xd->up_available; |
| const int has_left = xd->left_available; |
| |
| // 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 (CHECK_BWDREF_OR_ALTREF(edge_mbmi->ref_frame[0])) |
| pred_context = 3; |
| else |
| pred_context = 4 * CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[0]); |
| } else { |
| pred_context = 1 + |
| 2 * (CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[0]) || |
| CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[1])); |
| } |
| } else { // inter/inter |
| const int above_has_second = has_second_ref(above_mbmi); |
| const int left_has_second = has_second_ref(left_mbmi); |
| const MV_REFERENCE_FRAME above0 = above_mbmi->ref_frame[0]; |
| const MV_REFERENCE_FRAME above1 = above_mbmi->ref_frame[1]; |
| const MV_REFERENCE_FRAME left0 = left_mbmi->ref_frame[0]; |
| const MV_REFERENCE_FRAME left1 = left_mbmi->ref_frame[1]; |
| |
| if (above_has_second && left_has_second) { |
| if (above0 == left0 && above1 == left1) |
| pred_context = |
| 3 * (CHECK_LAST_OR_LAST2(above0) || CHECK_LAST_OR_LAST2(above1) || |
| CHECK_LAST_OR_LAST2(left0) || CHECK_LAST_OR_LAST2(left1)); |
| else |
| pred_context = 2; |
| } else if (above_has_second || left_has_second) { |
| const MV_REFERENCE_FRAME rfs = !above_has_second ? above0 : left0; |
| const MV_REFERENCE_FRAME crf1 = above_has_second ? above0 : left0; |
| const MV_REFERENCE_FRAME crf2 = above_has_second ? above1 : left1; |
| |
| if (CHECK_LAST_OR_LAST2(rfs)) |
| pred_context = |
| 3 + (CHECK_LAST_OR_LAST2(crf1) || CHECK_LAST_OR_LAST2(crf2)); |
| else if (CHECK_GOLDEN_OR_LAST3(rfs)) |
| pred_context = |
| (CHECK_LAST_OR_LAST2(crf1) || CHECK_LAST_OR_LAST2(crf2)); |
| else |
| pred_context = |
| 1 + 2 * (CHECK_LAST_OR_LAST2(crf1) || CHECK_LAST_OR_LAST2(crf2)); |
| } else { |
| if (CHECK_BWDREF_OR_ALTREF(above0) && CHECK_BWDREF_OR_ALTREF(left0)) { |
| pred_context = 2 + (above0 == left0); |
| } else if (CHECK_BWDREF_OR_ALTREF(above0) || |
| CHECK_BWDREF_OR_ALTREF(left0)) { |
| const MV_REFERENCE_FRAME edge0 = |
| CHECK_BWDREF_OR_ALTREF(above0) ? left0 : above0; |
| pred_context = 4 * CHECK_LAST_OR_LAST2(edge0); |
| } else { |
| pred_context = |
| 2 * CHECK_LAST_OR_LAST2(above0) + 2 * CHECK_LAST_OR_LAST2(left0); |
| } |
| } |
| } |
| } 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) || |
| (CHECK_BWDREF_OR_ALTREF(edge_mbmi->ref_frame[0]) && |
| !has_second_ref(edge_mbmi))) |
| pred_context = 2; |
| else if (!has_second_ref(edge_mbmi)) |
| pred_context = 4 * (CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[0])); |
| else |
| pred_context = 3 * (CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[0]) || |
| CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[1])); |
| } else { // no edges available (2) |
| pred_context = 2; |
| } |
| |
| assert(pred_context >= 0 && pred_context < REF_CONTEXTS); |
| return pred_context; |
| } |
| |
| // For the bit to signal whether the single reference is LAST2_FRAME or |
| // LAST_FRAME, knowing that it shall be either of these 2 choices. |
| // |
| // NOTE: The probability of ref_frame[0] is LAST2_FRAME, conditioning on it is |
| // either LAST2_FRAME or LAST_FRAME. |
| int av1_get_pred_context_single_ref_p4(const MACROBLOCKD *xd) { |
| int pred_context; |
| const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; |
| const MB_MODE_INFO *const left_mbmi = xd->left_mbmi; |
| const int has_above = xd->up_available; |
| const int has_left = xd->left_available; |
| |
| // 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 (!CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[0])) |
| pred_context = 3; |
| else |
| pred_context = 4 * (edge_mbmi->ref_frame[0] == LAST_FRAME); |
| } else { |
| pred_context = 1 + |
| 2 * (edge_mbmi->ref_frame[0] == LAST_FRAME || |
| edge_mbmi->ref_frame[1] == LAST_FRAME); |
| } |
| } else { // inter/inter |
| const int above_has_second = has_second_ref(above_mbmi); |
| const int left_has_second = has_second_ref(left_mbmi); |
| const MV_REFERENCE_FRAME above0 = above_mbmi->ref_frame[0]; |
| const MV_REFERENCE_FRAME above1 = above_mbmi->ref_frame[1]; |
| const MV_REFERENCE_FRAME left0 = left_mbmi->ref_frame[0]; |
| const MV_REFERENCE_FRAME left1 = left_mbmi->ref_frame[1]; |
| |
| if (above_has_second && left_has_second) { |
| if (above0 == left0 && above1 == left1) |
| pred_context = 3 * (above0 == LAST_FRAME || above1 == LAST_FRAME || |
| left0 == LAST_FRAME || left1 == LAST_FRAME); |
| else |
| pred_context = 2; |
| } else if (above_has_second || left_has_second) { |
| const MV_REFERENCE_FRAME rfs = !above_has_second ? above0 : left0; |
| const MV_REFERENCE_FRAME crf1 = above_has_second ? above0 : left0; |
| const MV_REFERENCE_FRAME crf2 = above_has_second ? above1 : left1; |
| |
| if (rfs == LAST_FRAME) |
| pred_context = 3 + (crf1 == LAST_FRAME || crf2 == LAST_FRAME); |
| else if (rfs == LAST2_FRAME) |
| pred_context = (crf1 == LAST_FRAME || crf2 == LAST_FRAME); |
| else |
| pred_context = 1 + 2 * (crf1 == LAST_FRAME || crf2 == LAST_FRAME); |
| } else { |
| if (!CHECK_LAST_OR_LAST2(above0) && !CHECK_LAST_OR_LAST2(left0)) { |
| pred_context = 2 + (above0 == left0); |
| } else if (!CHECK_LAST_OR_LAST2(above0) || |
| !CHECK_LAST_OR_LAST2(left0)) { |
| const MV_REFERENCE_FRAME edge0 = |
| !CHECK_LAST_OR_LAST2(above0) ? left0 : above0; |
| pred_context = 4 * (edge0 == LAST_FRAME); |
| } else { |
| pred_context = 2 * (above0 == LAST_FRAME) + 2 * (left0 == LAST_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) || |
| (!CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[0]) && |
| !has_second_ref(edge_mbmi))) |
| pred_context = 2; |
| else if (!has_second_ref(edge_mbmi)) |
| pred_context = 4 * (edge_mbmi->ref_frame[0] == LAST_FRAME); |
| else |
| pred_context = 3 * (edge_mbmi->ref_frame[0] == LAST_FRAME || |
| edge_mbmi->ref_frame[1] == LAST_FRAME); |
| } else { // no edges available (2) |
| pred_context = 2; |
| } |
| |
| assert(pred_context >= 0 && pred_context < REF_CONTEXTS); |
| return pred_context; |
| } |
| |
| // For the bit to signal whether the single reference is GOLDEN_FRAME or |
| // LAST3_FRAME, knowing that it shall be either of these 2 choices. |
| // |
| // NOTE: The probability of ref_frame[0] is GOLDEN_FRAME, conditioning on it is |
| // either GOLDEN_FRAME or LAST3_FRAME. |
| int av1_get_pred_context_single_ref_p5(const MACROBLOCKD *xd) { |
| int pred_context; |
| const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; |
| const MB_MODE_INFO *const left_mbmi = xd->left_mbmi; |
| const int has_above = xd->up_available; |
| const int has_left = xd->left_available; |
| |
| // 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 (!CHECK_GOLDEN_OR_LAST3(edge_mbmi->ref_frame[0])) |
| pred_context = 3; |
| else |
| pred_context = 4 * (edge_mbmi->ref_frame[0] == LAST3_FRAME); |
| } else { |
| pred_context = 1 + |
| 2 * (edge_mbmi->ref_frame[0] == LAST3_FRAME || |
| edge_mbmi->ref_frame[1] == LAST3_FRAME); |
| } |
| } else { // inter/inter |
| const int above_has_second = has_second_ref(above_mbmi); |
| const int left_has_second = has_second_ref(left_mbmi); |
| const MV_REFERENCE_FRAME above0 = above_mbmi->ref_frame[0]; |
| const MV_REFERENCE_FRAME above1 = above_mbmi->ref_frame[1]; |
| const MV_REFERENCE_FRAME left0 = left_mbmi->ref_frame[0]; |
| const MV_REFERENCE_FRAME left1 = left_mbmi->ref_frame[1]; |
| |
| if (above_has_second && left_has_second) { |
| if (above0 == left0 && above1 == left1) |
| pred_context = 3 * (above0 == LAST3_FRAME || above1 == LAST3_FRAME || |
| left0 == LAST3_FRAME || left1 == LAST3_FRAME); |
| else |
| pred_context = 2; |
| } else if (above_has_second || left_has_second) { |
| const MV_REFERENCE_FRAME rfs = !above_has_second ? above0 : left0; |
| const MV_REFERENCE_FRAME crf1 = above_has_second ? above0 : left0; |
| const MV_REFERENCE_FRAME crf2 = above_has_second ? above1 : left1; |
| |
| if (rfs == LAST3_FRAME) |
| pred_context = 3 + (crf1 == LAST3_FRAME || crf2 == LAST3_FRAME); |
| else if (rfs == GOLDEN_FRAME) |
| pred_context = (crf1 == LAST3_FRAME || crf2 == LAST3_FRAME); |
| else |
| pred_context = 1 + 2 * (crf1 == LAST3_FRAME || crf2 == LAST3_FRAME); |
| } else { |
| if (!CHECK_GOLDEN_OR_LAST3(above0) && !CHECK_GOLDEN_OR_LAST3(left0)) { |
| pred_context = 2 + (above0 == left0); |
| } else if (!CHECK_GOLDEN_OR_LAST3(above0) || |
| !CHECK_GOLDEN_OR_LAST3(left0)) { |
| const MV_REFERENCE_FRAME edge0 = |
| !CHECK_GOLDEN_OR_LAST3(above0) ? left0 : above0; |
| pred_context = 4 * (edge0 == LAST3_FRAME); |
| } else { |
| pred_context = |
| 2 * (above0 == LAST3_FRAME) + 2 * (left0 == LAST3_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) || |
| (!CHECK_GOLDEN_OR_LAST3(edge_mbmi->ref_frame[0]) && |
| !has_second_ref(edge_mbmi))) |
| pred_context = 2; |
| else if (!has_second_ref(edge_mbmi)) |
| pred_context = 4 * (edge_mbmi->ref_frame[0] == LAST3_FRAME); |
| else |
| pred_context = 3 * (edge_mbmi->ref_frame[0] == LAST3_FRAME || |
| edge_mbmi->ref_frame[1] == LAST3_FRAME); |
| } else { // no edges available (2) |
| pred_context = 2; |
| } |
| |
| assert(pred_context >= 0 && pred_context < REF_CONTEXTS); |
| return pred_context; |
| } |
| |
| #else // CONFIG_EXT_REFS |
| |
| int av1_get_pred_context_single_ref_p1(const MACROBLOCKD *xd) { |
| int pred_context; |
| const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; |
| const MB_MODE_INFO *const left_mbmi = xd->left_mbmi; |
| const int has_above = xd->up_available; |
| const int has_left = xd->left_available; |
| // 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)) |
| pred_context = 4 * (edge_mbmi->ref_frame[0] == LAST_FRAME); |
| else |
| pred_context = 1 + (edge_mbmi->ref_frame[0] == LAST_FRAME || |
| edge_mbmi->ref_frame[1] == LAST_FRAME); |
| } else { // inter/inter |
| const int above_has_second = has_second_ref(above_mbmi); |
| const int left_has_second = has_second_ref(left_mbmi); |
| const MV_REFERENCE_FRAME above0 = above_mbmi->ref_frame[0]; |
| const MV_REFERENCE_FRAME above1 = above_mbmi->ref_frame[1]; |
| const MV_REFERENCE_FRAME left0 = left_mbmi->ref_frame[0]; |
| const MV_REFERENCE_FRAME left1 = left_mbmi->ref_frame[1]; |
| |
| if (above_has_second && left_has_second) { |
| pred_context = 1 + (above0 == LAST_FRAME || above1 == LAST_FRAME || |
| left0 == LAST_FRAME || left1 == LAST_FRAME); |
| } else if (above_has_second || left_has_second) { |
| const MV_REFERENCE_FRAME rfs = !above_has_second ? above0 : left0; |
| const MV_REFERENCE_FRAME crf1 = above_has_second ? above0 : left0; |
| const MV_REFERENCE_FRAME crf2 = above_has_second ? above1 : left1; |
| |
| if (rfs == LAST_FRAME) |
| pred_context = 3 + (crf1 == LAST_FRAME || crf2 == LAST_FRAME); |
| else |
| pred_context = (crf1 == LAST_FRAME || crf2 == LAST_FRAME); |
| } else { |
| pred_context = 2 * (above0 == LAST_FRAME) + 2 * (left0 == LAST_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)) { // intra |
| pred_context = 2; |
| } else { // inter |
| if (!has_second_ref(edge_mbmi)) |
| pred_context = 4 * (edge_mbmi->ref_frame[0] == LAST_FRAME); |
| else |
| pred_context = 1 + (edge_mbmi->ref_frame[0] == LAST_FRAME || |
| edge_mbmi->ref_frame[1] == LAST_FRAME); |
| } |
| } else { // no edges available |
| pred_context = 2; |
| } |
| |
| assert(pred_context >= 0 && pred_context < REF_CONTEXTS); |
| return pred_context; |
| } |
| |
| int av1_get_pred_context_single_ref_p2(const MACROBLOCKD *xd) { |
| int pred_context; |
| const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; |
| const MB_MODE_INFO *const left_mbmi = xd->left_mbmi; |
| const int has_above = xd->up_available; |
| const int has_left = xd->left_available; |
| |
| // 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); |
| const MV_REFERENCE_FRAME above0 = above_mbmi->ref_frame[0]; |
| const MV_REFERENCE_FRAME above1 = above_mbmi->ref_frame[1]; |
| const MV_REFERENCE_FRAME left0 = left_mbmi->ref_frame[0]; |
| const MV_REFERENCE_FRAME left1 = left_mbmi->ref_frame[1]; |
| |
| if (above_has_second && left_has_second) { |
| if (above0 == left0 && above1 == left1) |
| pred_context = |
| 3 * (above0 == GOLDEN_FRAME || above1 == GOLDEN_FRAME || |
| left0 == GOLDEN_FRAME || left1 == GOLDEN_FRAME); |
| else |
| pred_context = 2; |
| } else if (above_has_second || left_has_second) { |
| const MV_REFERENCE_FRAME rfs = !above_has_second ? above0 : left0; |
| const MV_REFERENCE_FRAME crf1 = above_has_second ? above0 : left0; |
| const MV_REFERENCE_FRAME crf2 = above_has_second ? above1 : left1; |
| |
| 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 (above0 == LAST_FRAME && left0 == LAST_FRAME) { |
| pred_context = 3; |
| } else if (above0 == LAST_FRAME || left0 == LAST_FRAME) { |
| const MV_REFERENCE_FRAME edge0 = |
| (above0 == LAST_FRAME) ? left0 : above0; |
| pred_context = 4 * (edge0 == GOLDEN_FRAME); |
| } else { |
| pred_context = |
| 2 * (above0 == GOLDEN_FRAME) + 2 * (left0 == 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; |
| } |
| |
| #endif // CONFIG_EXT_REFS |
