diff options
Diffstat (limited to 'third_party/aom/av1/common/pred_common.c')
| -rw-r--r-- | third_party/aom/av1/common/pred_common.c | 1329 |
1 files changed, 123 insertions, 1206 deletions
diff --git a/third_party/aom/av1/common/pred_common.c b/third_party/aom/av1/common/pred_common.c index 51fd0389e..d77739d85 100644 --- a/third_party/aom/av1/common/pred_common.c +++ b/third_party/aom/av1/common/pred_common.c @@ -12,30 +12,23 @@ #include "av1/common/common.h" #include "av1/common/pred_common.h" #include "av1/common/reconinter.h" -#if CONFIG_EXT_INTRA #include "av1/common/reconintra.h" -#endif // CONFIG_EXT_INTRA #include "av1/common/seg_common.h" // Returns a context number for the given MB prediction signal -#if CONFIG_DUAL_FILTER -static InterpFilter get_ref_filter_type(const MODE_INFO *mi, +static InterpFilter get_ref_filter_type(const MB_MODE_INFO *ref_mbmi, const MACROBLOCKD *xd, int dir, MV_REFERENCE_FRAME ref_frame) { - const MB_MODE_INFO *ref_mbmi = &mi->mbmi; - int use_subpel[2] = { - has_subpel_mv_component(mi, xd, dir), - has_subpel_mv_component(mi, xd, dir + 2), - }; - - return (((ref_mbmi->ref_frame[0] == ref_frame && use_subpel[0]) || - (ref_mbmi->ref_frame[1] == ref_frame && use_subpel[1])) + (void)xd; + + return ((ref_mbmi->ref_frame[0] == ref_frame || + ref_mbmi->ref_frame[1] == ref_frame) ? av1_extract_interp_filter(ref_mbmi->interp_filters, dir & 0x01) : SWITCHABLE_FILTERS); } int av1_get_pred_context_switchable_interp(const MACROBLOCKD *xd, int dir) { - const MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi; + const MB_MODE_INFO *const mbmi = xd->mi[0]; const int ctx_offset = (mbmi->ref_frame[1] > INTRA_FRAME) * INTER_FILTER_COMP_OFFSET; MV_REFERENCE_FRAME ref_frame = @@ -69,132 +62,57 @@ int av1_get_pred_context_switchable_interp(const MACROBLOCKD *xd, int dir) { return filter_type_ctx; } -#else -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 corresponding to real macroblocks. - // The prediction flags in these dummy entries are initialized to 0. - const MB_MODE_INFO *const left_mbmi = xd->left_mbmi; - const int left_type = - xd->left_available && is_inter_block(left_mbmi) - ? av1_extract_interp_filter(left_mbmi->interp_filters, 0) - : SWITCHABLE_FILTERS; - const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; - const int above_type = - xd->up_available && is_inter_block(above_mbmi) - ? av1_extract_interp_filter(above_mbmi->interp_filters, 0) - : SWITCHABLE_FILTERS; - - if (left_type == above_type) { - return left_type; - } else if (left_type == SWITCHABLE_FILTERS) { - assert(above_type != SWITCHABLE_FILTERS); - return above_type; - } else if (above_type == SWITCHABLE_FILTERS) { - assert(left_type != SWITCHABLE_FILTERS); - return left_type; - } else { - return SWITCHABLE_FILTERS; - } -} -#endif - -#if CONFIG_EXT_INTRA -#if CONFIG_INTRA_INTERP -// Obtain the reference filter type from the above/left neighbor blocks. -static INTRA_FILTER get_ref_intra_filter(const MB_MODE_INFO *ref_mbmi) { - INTRA_FILTER ref_type = INTRA_FILTERS; - - if (ref_mbmi->sb_type >= BLOCK_8X8) { - const PREDICTION_MODE mode = ref_mbmi->mode; - if (is_inter_block(ref_mbmi)) { - switch (av1_extract_interp_filter(ref_mbmi->interp_filters, 0)) { - case EIGHTTAP_REGULAR: ref_type = INTRA_FILTER_8TAP; break; - case EIGHTTAP_SMOOTH: ref_type = INTRA_FILTER_8TAP_SMOOTH; break; - case MULTITAP_SHARP: ref_type = INTRA_FILTER_8TAP_SHARP; break; - case BILINEAR: ref_type = INTRA_FILTERS; break; - default: break; - } - } else { - if (av1_is_directional_mode(mode, ref_mbmi->sb_type)) { - const int p_angle = - mode_to_angle_map[mode] + ref_mbmi->angle_delta[0] * ANGLE_STEP; - if (av1_is_intra_filter_switchable(p_angle)) { - ref_type = ref_mbmi->intra_filter; - } - } - } - } - return ref_type; -} - -int av1_get_pred_context_intra_interp(const MACROBLOCKD *xd) { - int left_type = INTRA_FILTERS, above_type = INTRA_FILTERS; - if (xd->left_available) left_type = get_ref_intra_filter(xd->left_mbmi); +static void palette_add_to_cache(uint16_t *cache, int *n, uint16_t val) { + // Do not add an already existing value + if (*n > 0 && val == cache[*n - 1]) return; - if (xd->up_available) above_type = get_ref_intra_filter(xd->above_mbmi); - - if (left_type == above_type) - return left_type; - else if (left_type == INTRA_FILTERS && above_type != INTRA_FILTERS) - return above_type; - else if (left_type != INTRA_FILTERS && above_type == INTRA_FILTERS) - return left_type; - else - return INTRA_FILTERS; + cache[(*n)++] = val; } -#endif // CONFIG_INTRA_INTERP -#endif // CONFIG_EXT_INTRA -#if CONFIG_PALETTE_DELTA_ENCODING int av1_get_palette_cache(const MACROBLOCKD *const xd, int plane, uint16_t *cache) { const int row = -xd->mb_to_top_edge >> 3; // Do not refer to above SB row when on SB boundary. - const MODE_INFO *const above_mi = - (row % (1 << MIN_SB_SIZE_LOG2)) ? xd->above_mi : NULL; - const MODE_INFO *const left_mi = xd->left_mi; + const MB_MODE_INFO *const above_mi = + (row % (1 << MIN_SB_SIZE_LOG2)) ? xd->above_mbmi : NULL; + const MB_MODE_INFO *const left_mi = xd->left_mbmi; int above_n = 0, left_n = 0; - if (above_mi) - above_n = above_mi->mbmi.palette_mode_info.palette_size[plane != 0]; - if (left_mi) - left_n = left_mi->mbmi.palette_mode_info.palette_size[plane != 0]; + if (above_mi) above_n = above_mi->palette_mode_info.palette_size[plane != 0]; + if (left_mi) left_n = left_mi->palette_mode_info.palette_size[plane != 0]; if (above_n == 0 && left_n == 0) return 0; int above_idx = plane * PALETTE_MAX_SIZE; int left_idx = plane * PALETTE_MAX_SIZE; int n = 0; const uint16_t *above_colors = - above_mi ? above_mi->mbmi.palette_mode_info.palette_colors : NULL; + above_mi ? above_mi->palette_mode_info.palette_colors : NULL; const uint16_t *left_colors = - left_mi ? left_mi->mbmi.palette_mode_info.palette_colors : NULL; + left_mi ? left_mi->palette_mode_info.palette_colors : NULL; // Merge the sorted lists of base colors from above and left to get // combined sorted color cache. while (above_n > 0 && left_n > 0) { uint16_t v_above = above_colors[above_idx]; uint16_t v_left = left_colors[left_idx]; if (v_left < v_above) { - if (n == 0 || v_left != cache[n - 1]) cache[n++] = v_left; + palette_add_to_cache(cache, &n, v_left); ++left_idx, --left_n; } else { - if (n == 0 || v_above != cache[n - 1]) cache[n++] = v_above; + palette_add_to_cache(cache, &n, v_above); ++above_idx, --above_n; if (v_left == v_above) ++left_idx, --left_n; } } while (above_n-- > 0) { uint16_t val = above_colors[above_idx++]; - if (n == 0 || val != cache[n - 1]) cache[n++] = val; + palette_add_to_cache(cache, &n, val); } while (left_n-- > 0) { uint16_t val = left_colors[left_idx++]; - if (n == 0 || val != cache[n - 1]) cache[n++] = val; + palette_add_to_cache(cache, &n, val); } assert(n <= 2 * PALETTE_MAX_SIZE); return n; } -#endif // CONFIG_PALETTE_DELTA_ENCODING // The mode info data structure has a one element border above and to the // left of the entries corresponding to real macroblocks. @@ -220,65 +138,17 @@ int av1_get_intra_inter_context(const MACROBLOCKD *xd) { } } -#if CONFIG_COMPOUND_SINGLEREF -// The compound/single mode info data structure has 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. -int av1_get_inter_mode_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_inter_comp_mode = - is_inter_anyref_comp_mode(above_mbmi->mode); - const int left_inter_comp_mode = is_inter_anyref_comp_mode(left_mbmi->mode); - if (above_inter_comp_mode && left_inter_comp_mode) - return 0; - else if (above_inter_comp_mode || left_inter_comp_mode) - return 1; - else if (!is_inter_block(above_mbmi) && !is_inter_block(left_mbmi)) - return 2; - else - return 3; - } else if (has_above || has_left) { // one edge available - const MB_MODE_INFO *const edge_mbmi = has_above ? above_mbmi : left_mbmi; - if (is_inter_anyref_comp_mode(edge_mbmi->mode)) - return 1; - else if (!is_inter_block(edge_mbmi)) - return 2; - else - return 3; - } else { // no edge available - return 2; - } -} -#endif // CONFIG_COMPOUND_SINGLEREF - -#if CONFIG_EXT_REFS #define CHECK_BACKWARD_REFS(ref_frame) \ (((ref_frame) >= BWDREF_FRAME) && ((ref_frame) <= ALTREF_FRAME)) #define IS_BACKWARD_REF_FRAME(ref_frame) CHECK_BACKWARD_REFS(ref_frame) -#else -#define IS_BACKWARD_REF_FRAME(ref_frame) ((ref_frame) == cm->comp_fixed_ref) -#endif // CONFIG_EXT_REFS - -#define CHECK_GOLDEN_OR_LAST3(ref_frame) \ - (((ref_frame) == GOLDEN_FRAME) || ((ref_frame) == LAST3_FRAME)) -int av1_get_reference_mode_context(const AV1_COMMON *cm, - const MACROBLOCKD *xd) { +int av1_get_reference_mode_context(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. @@ -314,9 +184,6 @@ int av1_get_reference_mode_context(const AV1_COMMON *cm, return ctx; } -#if CONFIG_EXT_COMP_REFS -// TODO(zoeliu): To try on the design of 3 contexts, instead of 5: -// COMP_REF_TYPE_CONTEXTS = 3 int av1_get_comp_reference_type_context(const MACROBLOCKD *xd) { int pred_context; const MB_MODE_INFO *const above_mbmi = xd->above_mbmi; @@ -344,9 +211,8 @@ int av1_get_comp_reference_type_context(const MACROBLOCKD *xd) { const MV_REFERENCE_FRAME frfl = left_mbmi->ref_frame[0]; if (a_sg && l_sg) { // single/single - pred_context = - 1 + - 2 * (!(IS_BACKWARD_REF_FRAME(frfa) ^ IS_BACKWARD_REF_FRAME(frfl))); + pred_context = 1 + 2 * (!(IS_BACKWARD_REF_FRAME(frfa) ^ + IS_BACKWARD_REF_FRAME(frfl))); } else if (l_sg || a_sg) { // single/comp const int uni_rfc = a_sg ? has_uni_comp_refs(left_mbmi) : has_uni_comp_refs(above_mbmi); @@ -397,44 +263,16 @@ int av1_get_comp_reference_type_context(const MACROBLOCKD *xd) { // 3 contexts: Voting is used to compare the count of forward references with // that of backward references from the spatial neighbors. int av1_get_pred_context_uni_comp_ref_p(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; + const uint8_t *const ref_counts = &xd->neighbors_ref_counts[0]; // Count of forward references (L, L2, L3, or G) - int frf_count = 0; + const int frf_count = ref_counts[LAST_FRAME] + ref_counts[LAST2_FRAME] + + ref_counts[LAST3_FRAME] + ref_counts[GOLDEN_FRAME]; // Count of backward references (B or A) - int brf_count = 0; - - if (above_in_image && is_inter_block(above_mbmi)) { - if (above_mbmi->ref_frame[0] <= GOLDEN_FRAME) - ++frf_count; - else - ++brf_count; - if (has_second_ref(above_mbmi)) { - if (above_mbmi->ref_frame[1] <= GOLDEN_FRAME) - ++frf_count; - else - ++brf_count; - } - } - - if (left_in_image && is_inter_block(left_mbmi)) { - if (left_mbmi->ref_frame[0] <= GOLDEN_FRAME) - ++frf_count; - else - ++brf_count; - if (has_second_ref(left_mbmi)) { - if (left_mbmi->ref_frame[1] <= GOLDEN_FRAME) - ++frf_count; - else - ++brf_count; - } - } + const int brf_count = ref_counts[BWDREF_FRAME] + ref_counts[ALTREF2_FRAME] + + ref_counts[ALTREF_FRAME]; - pred_context = + const int pred_context = (frf_count == brf_count) ? 1 : ((frf_count < brf_count) ? 0 : 2); assert(pred_context >= 0 && pred_context < UNI_COMP_REF_CONTEXTS); @@ -450,50 +288,17 @@ int av1_get_pred_context_uni_comp_ref_p(const MACROBLOCKD *xd) { // 3 contexts: Voting is used to compare the count of LAST2_FRAME with the // total count of LAST3/GOLDEN from the spatial neighbors. int av1_get_pred_context_uni_comp_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 above_in_image = xd->up_available; - const int left_in_image = xd->left_available; + const uint8_t *const ref_counts = &xd->neighbors_ref_counts[0]; // Count of LAST2 - int last2_count = 0; + const int last2_count = ref_counts[LAST2_FRAME]; // Count of LAST3 or GOLDEN - int last3_or_gld_count = 0; - - if (above_in_image && is_inter_block(above_mbmi)) { - last2_count = (above_mbmi->ref_frame[0] == LAST2_FRAME) ? last2_count + 1 - : last2_count; - last3_or_gld_count = CHECK_GOLDEN_OR_LAST3(above_mbmi->ref_frame[0]) - ? last3_or_gld_count + 1 - : last3_or_gld_count; - if (has_second_ref(above_mbmi)) { - last2_count = (above_mbmi->ref_frame[1] == LAST2_FRAME) ? last2_count + 1 - : last2_count; - last3_or_gld_count = CHECK_GOLDEN_OR_LAST3(above_mbmi->ref_frame[1]) - ? last3_or_gld_count + 1 - : last3_or_gld_count; - } - } + const int last3_or_gld_count = + ref_counts[LAST3_FRAME] + ref_counts[GOLDEN_FRAME]; - if (left_in_image && is_inter_block(left_mbmi)) { - last2_count = (left_mbmi->ref_frame[0] == LAST2_FRAME) ? last2_count + 1 - : last2_count; - last3_or_gld_count = CHECK_GOLDEN_OR_LAST3(left_mbmi->ref_frame[0]) - ? last3_or_gld_count + 1 - : last3_or_gld_count; - if (has_second_ref(left_mbmi)) { - last2_count = (left_mbmi->ref_frame[1] == LAST2_FRAME) ? last2_count + 1 - : last2_count; - last3_or_gld_count = CHECK_GOLDEN_OR_LAST3(left_mbmi->ref_frame[1]) - ? last3_or_gld_count + 1 - : last3_or_gld_count; - } - } - - pred_context = (last2_count == last3_or_gld_count) - ? 1 - : ((last2_count < last3_or_gld_count) ? 0 : 2); + const int pred_context = (last2_count == last3_or_gld_count) + ? 1 + : ((last2_count < last3_or_gld_count) ? 0 : 2); assert(pred_context >= 0 && pred_context < UNI_COMP_REF_CONTEXTS); return pred_context; @@ -508,415 +313,83 @@ int av1_get_pred_context_uni_comp_ref_p1(const MACROBLOCKD *xd) { // 3 contexts: Voting is used to compare the count of LAST3_FRAME with the // total count of GOLDEN_FRAME from the spatial neighbors. int av1_get_pred_context_uni_comp_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 above_in_image = xd->up_available; - const int left_in_image = xd->left_available; + const uint8_t *const ref_counts = &xd->neighbors_ref_counts[0]; // Count of LAST3 - int last3_count = 0; + const int last3_count = ref_counts[LAST3_FRAME]; // Count of GOLDEN - int gld_count = 0; - - if (above_in_image && is_inter_block(above_mbmi)) { - last3_count = (above_mbmi->ref_frame[0] == LAST3_FRAME) ? last3_count + 1 - : last3_count; - gld_count = - (above_mbmi->ref_frame[0] == GOLDEN_FRAME) ? gld_count + 1 : gld_count; - if (has_second_ref(above_mbmi)) { - last3_count = (above_mbmi->ref_frame[1] == LAST3_FRAME) ? last3_count + 1 - : last3_count; - gld_count = (above_mbmi->ref_frame[1] == GOLDEN_FRAME) ? gld_count + 1 - : gld_count; - } - } + const int gld_count = ref_counts[GOLDEN_FRAME]; - if (left_in_image && is_inter_block(left_mbmi)) { - last3_count = (left_mbmi->ref_frame[0] == LAST3_FRAME) ? last3_count + 1 - : last3_count; - gld_count = - (left_mbmi->ref_frame[0] == GOLDEN_FRAME) ? gld_count + 1 : gld_count; - if (has_second_ref(left_mbmi)) { - last3_count = (left_mbmi->ref_frame[1] == LAST3_FRAME) ? last3_count + 1 - : last3_count; - gld_count = - (left_mbmi->ref_frame[1] == GOLDEN_FRAME) ? gld_count + 1 : gld_count; - } - } - - pred_context = + const int pred_context = (last3_count == gld_count) ? 1 : ((last3_count < gld_count) ? 0 : 2); assert(pred_context >= 0 && pred_context < UNI_COMP_REF_CONTEXTS); return pred_context; } -#endif // CONFIG_EXT_COMP_REFS - -#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)) - -// 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. +// == Common context functions for both comp and single ref == // -// NOTE(zoeliu): The probability of ref_frame[0] is either -// GOLDEN_FRAME or LAST3_FRAME. -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; +// Obtain contexts to signal a reference frame to be either LAST/LAST2 or +// LAST3/GOLDEN. +static int get_pred_context_ll2_or_l3gld(const MACROBLOCKD *xd) { + const uint8_t *const ref_counts = &xd->neighbors_ref_counts[0]; -// 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 CONFIG_ONE_SIDED_COMPOUND || CONFIG_FRAME_SIGN_BIAS - // Code seems to assume that signbias of cm->comp_bwd_ref[0] is always 1 - const int bwd_ref_sign_idx = 1; -#else - const int bwd_ref_sign_idx = cm->ref_frame_sign_bias[cm->comp_bwd_ref[0]]; -#endif // CONFIG_ONE_SIDED_COMPOUND || CONFIG_FRAME_SIGN_BIAS - const int fwd_ref_sign_idx = !bwd_ref_sign_idx; - - (void)cm; + // Count of LAST + LAST2 + const int last_last2_count = ref_counts[LAST_FRAME] + ref_counts[LAST2_FRAME]; + // Count of LAST3 + GOLDEN + const int last3_gld_count = + ref_counts[LAST3_FRAME] + ref_counts[GOLDEN_FRAME]; - 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_BACKWARD_REFS(frfa) && CHECK_LAST_OR_LAST2(frfl)) || - (CHECK_BACKWARD_REFS(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. -#if !USE_UNI_COMP_REFS - // TODO(zoeliu): To further study the UNIDIR scenario - assert(CHECK_GOLDEN_OR_LAST3(frfa) || CHECK_GOLDEN_OR_LAST3(frfl)); -#endif // !USE_UNI_COMP_REFS - 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; - } + const int pred_context = (last_last2_count == last3_gld_count) + ? 1 + : ((last_last2_count < last3_gld_count) ? 0 : 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(zoeliu): 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_ref_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. -#if CONFIG_ONE_SIDED_COMPOUND || CONFIG_FRAME_SIGN_BIAS - // Code seems to assume that signbias of cm->comp_bwd_ref[0] is always 1 - const int bwd_ref_sign_idx = 1; -#else - const int bwd_ref_sign_idx = cm->ref_frame_sign_bias[cm->comp_bwd_ref[0]]; -#endif // CONFIG_ONE_SIDED_COMPOUND || CONFIG_FRAME_SIGN_BIAS - const int fwd_ref_sign_idx = !bwd_ref_sign_idx; - - (void)cm; - - 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_BACKWARD_REFS(frfa) && CHECK_BACKWARD_REFS(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; +// Obtain contexts to signal a reference frame to be either LAST or LAST2. +static int get_pred_context_last_or_last2(const MACROBLOCKD *xd) { + const uint8_t *const ref_counts = &xd->neighbors_ref_counts[0]; - 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; + // Count of LAST + const int last_count = ref_counts[LAST_FRAME]; + // Count of LAST2 + const int last2_count = ref_counts[LAST2_FRAME]; - 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; - } + const int pred_context = + (last_count == last2_count) ? 1 : ((last_count < last2_count) ? 0 : 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(zoeliu): The probability of ref_frame[0] is GOLDEN_FRAME, -// conditioning on it is either GOLDEN or LAST3. -int av1_get_pred_context_comp_ref_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. -#if CONFIG_ONE_SIDED_COMPOUND || CONFIG_FRAME_SIGN_BIAS - const int bwd_ref_sign_idx = 1; -#else - const int bwd_ref_sign_idx = cm->ref_frame_sign_bias[cm->comp_bwd_ref[0]]; -#endif // CONFIG_ONE_SIDED_COMPOUND || CONFIG_FRAME_SIGN_BIAS - const int fwd_ref_sign_idx = !bwd_ref_sign_idx; - - (void)cm; +// Obtain contexts to signal a reference frame to be either LAST3 or GOLDEN. +static int get_pred_context_last3_or_gld(const MACROBLOCKD *xd) { + const uint8_t *const ref_counts = &xd->neighbors_ref_counts[0]; - 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_BACKWARD_REFS(frfa) && CHECK_BACKWARD_REFS(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; + // Count of LAST3 + const int last3_count = ref_counts[LAST3_FRAME]; + // Count of GOLDEN + const int gld_count = ref_counts[GOLDEN_FRAME]; - 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; - } + const int pred_context = + (last3_count == gld_count) ? 1 : ((last3_count < gld_count) ? 0 : 2); assert(pred_context >= 0 && pred_context < REF_CONTEXTS); - return pred_context; } // Obtain contexts to signal a reference frame be either BWDREF/ALTREF2, or // ALTREF. -int av1_get_pred_context_brfarf2_or_arf(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 above_in_image = xd->up_available; - const int left_in_image = xd->left_available; +static int get_pred_context_brfarf2_or_arf(const MACROBLOCKD *xd) { + const uint8_t *const ref_counts = &xd->neighbors_ref_counts[0]; // Counts of BWDREF, ALTREF2, or ALTREF frames (B, A2, or A) - int bwdref_counts[ALTREF_FRAME - BWDREF_FRAME + 1] = { 0 }; - - if (above_in_image && is_inter_block(above_mbmi)) { - if (above_mbmi->ref_frame[0] >= BWDREF_FRAME) - ++bwdref_counts[above_mbmi->ref_frame[0] - BWDREF_FRAME]; - if (has_second_ref(above_mbmi)) { - if (above_mbmi->ref_frame[1] >= BWDREF_FRAME) - ++bwdref_counts[above_mbmi->ref_frame[1] - BWDREF_FRAME]; - } - } + const int brfarf2_count = + ref_counts[BWDREF_FRAME] + ref_counts[ALTREF2_FRAME]; + const int arf_count = ref_counts[ALTREF_FRAME]; - if (left_in_image && is_inter_block(left_mbmi)) { - if (left_mbmi->ref_frame[0] >= BWDREF_FRAME) - ++bwdref_counts[left_mbmi->ref_frame[0] - BWDREF_FRAME]; - if (has_second_ref(left_mbmi)) { - if (left_mbmi->ref_frame[1] >= BWDREF_FRAME) - ++bwdref_counts[left_mbmi->ref_frame[1] - BWDREF_FRAME]; - } - } - - const int brfarf2_count = bwdref_counts[BWDREF_FRAME - BWDREF_FRAME] + - bwdref_counts[ALTREF2_FRAME - BWDREF_FRAME]; - const int arf_count = bwdref_counts[ALTREF_FRAME - BWDREF_FRAME]; const int pred_context = (brfarf2_count == arf_count) ? 1 : ((brfarf2_count < arf_count) ? 0 : 2); @@ -925,42 +398,13 @@ int av1_get_pred_context_brfarf2_or_arf(const MACROBLOCKD *xd) { } // Obtain contexts to signal a reference frame be either BWDREF or ALTREF2. -int av1_get_pred_context_brf_or_arf2(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 above_in_image = xd->up_available; - const int left_in_image = xd->left_available; +static int get_pred_context_brf_or_arf2(const MACROBLOCKD *xd) { + const uint8_t *const ref_counts = &xd->neighbors_ref_counts[0]; // Count of BWDREF frames (B) - int brf_count = 0; + const int brf_count = ref_counts[BWDREF_FRAME]; // Count of ALTREF2 frames (A2) - int arf2_count = 0; - - if (above_in_image && is_inter_block(above_mbmi)) { - if (above_mbmi->ref_frame[0] == BWDREF_FRAME) - ++brf_count; - else if (above_mbmi->ref_frame[0] == ALTREF2_FRAME) - ++arf2_count; - if (has_second_ref(above_mbmi)) { - if (above_mbmi->ref_frame[1] == BWDREF_FRAME) - ++brf_count; - else if (above_mbmi->ref_frame[1] == ALTREF2_FRAME) - ++arf2_count; - } - } - - if (left_in_image && is_inter_block(left_mbmi)) { - if (left_mbmi->ref_frame[0] == BWDREF_FRAME) - ++brf_count; - else if (left_mbmi->ref_frame[0] == ALTREF2_FRAME) - ++arf2_count; - if (has_second_ref(left_mbmi)) { - if (left_mbmi->ref_frame[1] == BWDREF_FRAME) - ++brf_count; - else if (left_mbmi->ref_frame[1] == ALTREF2_FRAME) - ++arf2_count; - } - } + const int arf2_count = ref_counts[ALTREF2_FRAME]; const int pred_context = (brf_count == arf2_count) ? 1 : ((brf_count < arf2_count) ? 0 : 2); @@ -969,168 +413,57 @@ int av1_get_pred_context_brf_or_arf2(const MACROBLOCKD *xd) { return pred_context; } -// Signal the 2nd reference frame for a compound mode be either -// ALTREF, or ALTREF2/BWDREF. -int av1_get_pred_context_comp_bwdref_p(const AV1_COMMON *cm, - const MACROBLOCKD *xd) { - (void)cm; - return av1_get_pred_context_brfarf2_or_arf(xd); +// == Context functions for comp ref == +// +// 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. +int av1_get_pred_context_comp_ref_p(const MACROBLOCKD *xd) { + return get_pred_context_ll2_or_l3gld(xd); } -// Signal the 2nd reference frame for a compound mode be either -// ALTREF2 or BWDREF. -int av1_get_pred_context_comp_bwdref_p1(const AV1_COMMON *cm, - const MACROBLOCKD *xd) { - (void)cm; - return av1_get_pred_context_brf_or_arf2(xd); +// 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. +int av1_get_pred_context_comp_ref_p1(const MACROBLOCKD *xd) { + return get_pred_context_last_or_last2(xd); } -#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 corresponding to real macroblocks. - // The prediction flags in these dummy entries are initialized 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; +// Signal the first reference frame for a compound mode be GOLDEN, +// conditioning on that it is known either GOLDEN or LAST3. +int av1_get_pred_context_comp_ref_p2(const MACROBLOCKD *xd) { + return get_pred_context_last3_or_gld(xd); } -#endif // CONFIG_EXT_REFS +// Signal the 2nd reference frame for a compound mode be either +// ALTREF, or ALTREF2/BWDREF. +int av1_get_pred_context_comp_bwdref_p(const MACROBLOCKD *xd) { + return get_pred_context_brfarf2_or_arf(xd); +} -#if CONFIG_EXT_REFS +// Signal the 2nd reference frame for a compound mode be either +// ALTREF2 or BWDREF. +int av1_get_pred_context_comp_bwdref_p1(const MACROBLOCKD *xd) { + return get_pred_context_brf_or_arf2(xd); +} +// == Context functions for single ref == +// // For the bit to signal whether the single reference is a forward reference // frame or a backward reference frame. 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)) // single - pred_context = 4 * (!CHECK_BACKWARD_REFS(edge_mbmi->ref_frame[0])); - else // comp - pred_context = 2; - } else { // inter/inter - const int above_has_second = has_second_ref(above_mbmi); - const int left_has_second = has_second_ref(left_mbmi); + const uint8_t *const ref_counts = &xd->neighbors_ref_counts[0]; - const MV_REFERENCE_FRAME above0 = above_mbmi->ref_frame[0]; - const MV_REFERENCE_FRAME left0 = left_mbmi->ref_frame[0]; + // Count of forward reference frames + const int fwd_count = ref_counts[LAST_FRAME] + ref_counts[LAST2_FRAME] + + ref_counts[LAST3_FRAME] + ref_counts[GOLDEN_FRAME]; + // Count of backward reference frames + const int bwd_count = ref_counts[BWDREF_FRAME] + ref_counts[ALTREF2_FRAME] + + ref_counts[ALTREF_FRAME]; - if (above_has_second && left_has_second) { // comp/comp - pred_context = 2; - } else if (above_has_second || left_has_second) { // single/comp - const MV_REFERENCE_FRAME rfs = !above_has_second ? above0 : left0; - - pred_context = (!CHECK_BACKWARD_REFS(rfs)) ? 4 : 1; - } else { // single/single - pred_context = 2 * (!CHECK_BACKWARD_REFS(above0)) + - 2 * (!CHECK_BACKWARD_REFS(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)) // single - pred_context = 4 * (!CHECK_BACKWARD_REFS(edge_mbmi->ref_frame[0])); - else // comp - pred_context = 2; - } - } else { // no edges available - pred_context = 2; - } + const int pred_context = + (fwd_count == bwd_count) ? 1 : ((fwd_count < bwd_count) ? 0 : 2); assert(pred_context >= 0 && pred_context < REF_CONTEXTS); return pred_context; @@ -1140,445 +473,29 @@ int av1_get_pred_context_single_ref_p1(const MACROBLOCKD *xd) { // non-ALTREF backward reference frame, knowing that it shall be either of // these 2 choices. int av1_get_pred_context_single_ref_p2(const MACROBLOCKD *xd) { - return av1_get_pred_context_brfarf2_or_arf(xd); + return get_pred_context_brfarf2_or_arf(xd); } // 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. 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)) { // single - if (CHECK_BACKWARD_REFS(edge_mbmi->ref_frame[0])) - pred_context = 3; - else - pred_context = 4 * CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[0]); - } else { // comp - 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) { // comp/comp - 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) { // single/comp - 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 { // single/single - if (CHECK_BACKWARD_REFS(above0) && CHECK_BACKWARD_REFS(left0)) { - pred_context = 2 + (above0 == left0); - } else if (CHECK_BACKWARD_REFS(above0) || CHECK_BACKWARD_REFS(left0)) { - const MV_REFERENCE_FRAME edge0 = - CHECK_BACKWARD_REFS(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_BACKWARD_REFS(edge_mbmi->ref_frame[0]) && - !has_second_ref(edge_mbmi))) - pred_context = 2; - else if (!has_second_ref(edge_mbmi)) // single - pred_context = 4 * (CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[0])); - else // comp - 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; + return get_pred_context_ll2_or_l3gld(xd); } // 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(zoeliu): The probability of ref_frame[0] is LAST2_FRAME, conditioning -// on it is either LAST2_FRAME/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)) { // single - 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 { // comp - 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) { // comp/comp - 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) { // single/comp - 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 { // single/single - 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)) // single - pred_context = 4 * (edge_mbmi->ref_frame[0] == LAST_FRAME); - else // comp - 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; + return get_pred_context_last_or_last2(xd); } // 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(zoeliu): The probability of ref_frame[0] is GOLDEN_FRAME, conditioning -// on it is either GOLDEN_FRAME/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)) { // single - 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 { // comp - 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) { // comp/comp - 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) { // single/comp - 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 { // single/single - 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)) // single - pred_context = 4 * (edge_mbmi->ref_frame[0] == LAST3_FRAME); - else // comp - 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; + return get_pred_context_last3_or_gld(xd); } // For the bit to signal whether the single reference is ALTREF2_FRAME or // BWDREF_FRAME, knowing that it shall be either of these 2 choices. int av1_get_pred_context_single_ref_p6(const MACROBLOCKD *xd) { - return av1_get_pred_context_brf_or_arf2(xd); -} - -#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 corresponding to real macroblocks. - // The prediction flags in these dummy entries are initialized 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; + return get_pred_context_brf_or_arf2(xd); } - -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 corresponding to real macroblocks. - // The prediction flags in these dummy entries are initialized 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 != GOLDEN_FRAME && rfs != LAST_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 |