| /* |
| * 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 <assert.h> |
| |
| #include "av1/common/cfl.h" |
| #include "av1/common/common.h" |
| #include "av1/common/entropy.h" |
| #include "av1/common/entropymode.h" |
| #include "av1/common/entropymv.h" |
| #include "av1/common/mvref_common.h" |
| #include "av1/common/pred_common.h" |
| #include "av1/common/reconinter.h" |
| #include "av1/common/reconintra.h" |
| #include "av1/common/seg_common.h" |
| #include "av1/common/warped_motion.h" |
| |
| #include "av1/decoder/decodeframe.h" |
| #include "av1/decoder/decodemv.h" |
| |
| #include "aom_dsp/aom_dsp_common.h" |
| |
| #define ACCT_STR __func__ |
| |
| #define DEC_MISMATCH_DEBUG 0 |
| |
| static PREDICTION_MODE read_intra_mode(aom_reader *r, aom_cdf_prob *cdf) { |
| return (PREDICTION_MODE)aom_read_symbol(r, cdf, INTRA_MODES, ACCT_STR); |
| } |
| |
| static void read_cdef(AV1_COMMON *cm, aom_reader *r, MB_MODE_INFO *const mbmi, |
| int mi_col, int mi_row) { |
| if (cm->coded_lossless) return; |
| if (cm->allow_intrabc && NO_FILTER_FOR_IBC) { |
| assert(cm->cdef_bits == 0); |
| return; |
| } |
| |
| if (!(mi_col & (cm->seq_params.mib_size - 1)) && |
| !(mi_row & (cm->seq_params.mib_size - 1))) { // Top left? |
| cm->cdef_preset[0] = cm->cdef_preset[1] = cm->cdef_preset[2] = |
| cm->cdef_preset[3] = -1; |
| } |
| // Read CDEF param at the first non-skip coding block |
| const int mask = (1 << (6 - MI_SIZE_LOG2)); |
| const int m = ~(mask - 1); |
| const int index = cm->seq_params.sb_size == BLOCK_128X128 |
| ? !!(mi_col & mask) + 2 * !!(mi_row & mask) |
| : 0; |
| cm->mi_grid_visible[(mi_row & m) * cm->mi_stride + (mi_col & m)] |
| ->cdef_strength = cm->cdef_preset[index] = |
| cm->cdef_preset[index] == -1 && !mbmi->skip |
| ? aom_read_literal(r, cm->cdef_bits, ACCT_STR) |
| : cm->cdef_preset[index]; |
| } |
| |
| static int read_delta_qindex(AV1_COMMON *cm, MACROBLOCKD *xd, aom_reader *r, |
| MB_MODE_INFO *const mbmi, int mi_col, int mi_row) { |
| int sign, abs, reduced_delta_qindex = 0; |
| BLOCK_SIZE bsize = mbmi->sb_type; |
| const int b_col = mi_col & (cm->seq_params.mib_size - 1); |
| const int b_row = mi_row & (cm->seq_params.mib_size - 1); |
| const int read_delta_q_flag = (b_col == 0 && b_row == 0); |
| FRAME_CONTEXT *ec_ctx = xd->tile_ctx; |
| |
| if ((bsize != cm->seq_params.sb_size || mbmi->skip == 0) && |
| read_delta_q_flag) { |
| abs = aom_read_symbol(r, ec_ctx->delta_q_cdf, DELTA_Q_PROBS + 1, ACCT_STR); |
| const int smallval = (abs < DELTA_Q_SMALL); |
| |
| if (!smallval) { |
| const int rem_bits = aom_read_literal(r, 3, ACCT_STR) + 1; |
| const int thr = (1 << rem_bits) + 1; |
| abs = aom_read_literal(r, rem_bits, ACCT_STR) + thr; |
| } |
| |
| if (abs) { |
| sign = aom_read_bit(r, ACCT_STR); |
| } else { |
| sign = 1; |
| } |
| |
| reduced_delta_qindex = sign ? -abs : abs; |
| } |
| return reduced_delta_qindex; |
| } |
| static int read_delta_lflevel(AV1_COMMON *cm, MACROBLOCKD *xd, aom_reader *r, |
| int lf_id, MB_MODE_INFO *const mbmi, int mi_col, |
| int mi_row) { |
| int sign, abs, reduced_delta_lflevel = 0; |
| BLOCK_SIZE bsize = mbmi->sb_type; |
| const int b_col = mi_col & (cm->seq_params.mib_size - 1); |
| const int b_row = mi_row & (cm->seq_params.mib_size - 1); |
| const int read_delta_lf_flag = (b_col == 0 && b_row == 0); |
| FRAME_CONTEXT *ec_ctx = xd->tile_ctx; |
| |
| if ((bsize != cm->seq_params.sb_size || mbmi->skip == 0) && |
| read_delta_lf_flag) { |
| if (cm->delta_lf_multi) { |
| assert(lf_id >= 0 && |
| lf_id < (av1_num_planes(cm) > 1 ? FRAME_LF_COUNT |
| : FRAME_LF_COUNT - 2)); |
| abs = aom_read_symbol(r, ec_ctx->delta_lf_multi_cdf[lf_id], |
| DELTA_LF_PROBS + 1, ACCT_STR); |
| } else { |
| abs = aom_read_symbol(r, ec_ctx->delta_lf_cdf, DELTA_LF_PROBS + 1, |
| ACCT_STR); |
| } |
| const int smallval = (abs < DELTA_LF_SMALL); |
| if (!smallval) { |
| const int rem_bits = aom_read_literal(r, 3, ACCT_STR) + 1; |
| const int thr = (1 << rem_bits) + 1; |
| abs = aom_read_literal(r, rem_bits, ACCT_STR) + thr; |
| } |
| |
| if (abs) { |
| sign = aom_read_bit(r, ACCT_STR); |
| } else { |
| sign = 1; |
| } |
| |
| reduced_delta_lflevel = sign ? -abs : abs; |
| } |
| return reduced_delta_lflevel; |
| } |
| |
| static UV_PREDICTION_MODE read_intra_mode_uv(FRAME_CONTEXT *ec_ctx, |
| aom_reader *r, |
| CFL_ALLOWED_TYPE cfl_allowed, |
| PREDICTION_MODE y_mode) { |
| const UV_PREDICTION_MODE uv_mode = |
| aom_read_symbol(r, ec_ctx->uv_mode_cdf[cfl_allowed][y_mode], |
| UV_INTRA_MODES - !cfl_allowed, ACCT_STR); |
| return uv_mode; |
| } |
| |
| static int read_cfl_alphas(FRAME_CONTEXT *const ec_ctx, aom_reader *r, |
| int *signs_out) { |
| const int joint_sign = |
| aom_read_symbol(r, ec_ctx->cfl_sign_cdf, CFL_JOINT_SIGNS, "cfl:signs"); |
| int idx = 0; |
| // Magnitudes are only coded for nonzero values |
| if (CFL_SIGN_U(joint_sign) != CFL_SIGN_ZERO) { |
| aom_cdf_prob *cdf_u = ec_ctx->cfl_alpha_cdf[CFL_CONTEXT_U(joint_sign)]; |
| idx = aom_read_symbol(r, cdf_u, CFL_ALPHABET_SIZE, "cfl:alpha_u") |
| << CFL_ALPHABET_SIZE_LOG2; |
| } |
| if (CFL_SIGN_V(joint_sign) != CFL_SIGN_ZERO) { |
| aom_cdf_prob *cdf_v = ec_ctx->cfl_alpha_cdf[CFL_CONTEXT_V(joint_sign)]; |
| idx += aom_read_symbol(r, cdf_v, CFL_ALPHABET_SIZE, "cfl:alpha_v"); |
| } |
| *signs_out = joint_sign; |
| return idx; |
| } |
| |
| static INTERINTRA_MODE read_interintra_mode(MACROBLOCKD *xd, aom_reader *r, |
| int size_group) { |
| const INTERINTRA_MODE ii_mode = (INTERINTRA_MODE)aom_read_symbol( |
| r, xd->tile_ctx->interintra_mode_cdf[size_group], INTERINTRA_MODES, |
| ACCT_STR); |
| return ii_mode; |
| } |
| |
| static PREDICTION_MODE read_inter_mode(FRAME_CONTEXT *ec_ctx, aom_reader *r, |
| int16_t ctx) { |
| int16_t mode_ctx = ctx & NEWMV_CTX_MASK; |
| int is_newmv, is_zeromv, is_refmv; |
| is_newmv = aom_read_symbol(r, ec_ctx->newmv_cdf[mode_ctx], 2, ACCT_STR) == 0; |
| if (is_newmv) return NEWMV; |
| |
| mode_ctx = (ctx >> GLOBALMV_OFFSET) & GLOBALMV_CTX_MASK; |
| is_zeromv = |
| aom_read_symbol(r, ec_ctx->zeromv_cdf[mode_ctx], 2, ACCT_STR) == 0; |
| if (is_zeromv) return GLOBALMV; |
| |
| mode_ctx = (ctx >> REFMV_OFFSET) & REFMV_CTX_MASK; |
| is_refmv = aom_read_symbol(r, ec_ctx->refmv_cdf[mode_ctx], 2, ACCT_STR) == 0; |
| if (is_refmv) |
| return NEARESTMV; |
| else |
| return NEARMV; |
| } |
| |
| static void read_drl_idx(FRAME_CONTEXT *ec_ctx, MACROBLOCKD *xd, |
| MB_MODE_INFO *mbmi, aom_reader *r) { |
| uint8_t ref_frame_type = av1_ref_frame_type(mbmi->ref_frame); |
| mbmi->ref_mv_idx = 0; |
| if (mbmi->mode == NEWMV || mbmi->mode == NEW_NEWMV) { |
| for (int idx = 0; idx < 2; ++idx) { |
| if (xd->ref_mv_count[ref_frame_type] > idx + 1) { |
| uint8_t drl_ctx = av1_drl_ctx(xd->ref_mv_stack[ref_frame_type], idx); |
| int drl_idx = aom_read_symbol(r, ec_ctx->drl_cdf[drl_ctx], 2, ACCT_STR); |
| mbmi->ref_mv_idx = idx + drl_idx; |
| if (!drl_idx) return; |
| } |
| } |
| } |
| if (have_nearmv_in_inter_mode(mbmi->mode)) { |
| // Offset the NEARESTMV mode. |
| // TODO(jingning): Unify the two syntax decoding loops after the NEARESTMV |
| // mode is factored in. |
| for (int idx = 1; idx < 3; ++idx) { |
| if (xd->ref_mv_count[ref_frame_type] > idx + 1) { |
| uint8_t drl_ctx = av1_drl_ctx(xd->ref_mv_stack[ref_frame_type], idx); |
| int drl_idx = aom_read_symbol(r, ec_ctx->drl_cdf[drl_ctx], 2, ACCT_STR); |
| mbmi->ref_mv_idx = idx + drl_idx - 1; |
| if (!drl_idx) return; |
| } |
| } |
| } |
| } |
| |
| static MOTION_MODE read_motion_mode(AV1_COMMON *cm, MACROBLOCKD *xd, |
| MB_MODE_INFO *mbmi, aom_reader *r) { |
| if (cm->switchable_motion_mode == 0) return SIMPLE_TRANSLATION; |
| if (mbmi->skip_mode) return SIMPLE_TRANSLATION; |
| |
| const MOTION_MODE last_motion_mode_allowed = |
| motion_mode_allowed(xd->global_motion, xd, mbmi, cm->allow_warped_motion); |
| int motion_mode; |
| |
| if (last_motion_mode_allowed == SIMPLE_TRANSLATION) return SIMPLE_TRANSLATION; |
| |
| if (last_motion_mode_allowed == OBMC_CAUSAL) { |
| motion_mode = |
| aom_read_symbol(r, xd->tile_ctx->obmc_cdf[mbmi->sb_type], 2, ACCT_STR); |
| return (MOTION_MODE)(SIMPLE_TRANSLATION + motion_mode); |
| } else { |
| motion_mode = |
| aom_read_symbol(r, xd->tile_ctx->motion_mode_cdf[mbmi->sb_type], |
| MOTION_MODES, ACCT_STR); |
| return (MOTION_MODE)(SIMPLE_TRANSLATION + motion_mode); |
| } |
| } |
| |
| static PREDICTION_MODE read_inter_compound_mode(MACROBLOCKD *xd, aom_reader *r, |
| int16_t ctx) { |
| const int mode = |
| aom_read_symbol(r, xd->tile_ctx->inter_compound_mode_cdf[ctx], |
| INTER_COMPOUND_MODES, ACCT_STR); |
| assert(is_inter_compound_mode(NEAREST_NEARESTMV + mode)); |
| return NEAREST_NEARESTMV + mode; |
| } |
| |
| int av1_neg_deinterleave(int diff, int ref, int max) { |
| if (!ref) return diff; |
| if (ref >= (max - 1)) return max - diff - 1; |
| if (2 * ref < max) { |
| if (diff <= 2 * ref) { |
| if (diff & 1) |
| return ref + ((diff + 1) >> 1); |
| else |
| return ref - (diff >> 1); |
| } |
| return diff; |
| } else { |
| if (diff <= 2 * (max - ref - 1)) { |
| if (diff & 1) |
| return ref + ((diff + 1) >> 1); |
| else |
| return ref - (diff >> 1); |
| } |
| return max - (diff + 1); |
| } |
| } |
| |
| static int read_segment_id(AV1_COMMON *const cm, MACROBLOCKD *const xd, |
| int mi_row, int mi_col, aom_reader *r, int skip) { |
| FRAME_CONTEXT *ec_ctx = xd->tile_ctx; |
| struct segmentation *const seg = &cm->seg; |
| struct segmentation_probs *const segp = &ec_ctx->seg; |
| int cdf_num; |
| const int pred = av1_get_spatial_seg_pred(cm, xd, mi_row, mi_col, &cdf_num); |
| if (skip) return pred; |
| |
| aom_cdf_prob *pred_cdf = segp->spatial_pred_seg_cdf[cdf_num]; |
| int coded_id = aom_read_symbol(r, pred_cdf, 8, ACCT_STR); |
| const int segment_id = |
| av1_neg_deinterleave(coded_id, pred, seg->last_active_segid + 1); |
| |
| if (segment_id < 0 || segment_id > seg->last_active_segid) { |
| aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME, |
| "Corrupted segment_ids"); |
| } |
| return segment_id; |
| } |
| |
| static int dec_get_segment_id(const AV1_COMMON *cm, const uint8_t *segment_ids, |
| int mi_offset, int x_mis, int y_mis) { |
| int segment_id = INT_MAX; |
| |
| for (int y = 0; y < y_mis; y++) |
| for (int x = 0; x < x_mis; x++) |
| segment_id = |
| AOMMIN(segment_id, segment_ids[mi_offset + y * cm->mi_cols + x]); |
| |
| assert(segment_id >= 0 && segment_id < MAX_SEGMENTS); |
| return segment_id; |
| } |
| |
| static void set_segment_id(AV1_COMMON *cm, int mi_offset, int x_mis, int y_mis, |
| int segment_id) { |
| assert(segment_id >= 0 && segment_id < MAX_SEGMENTS); |
| |
| for (int y = 0; y < y_mis; y++) |
| for (int x = 0; x < x_mis; x++) |
| cm->current_frame_seg_map[mi_offset + y * cm->mi_cols + x] = segment_id; |
| } |
| |
| static int read_intra_segment_id(AV1_COMMON *const cm, MACROBLOCKD *const xd, |
| int mi_row, int mi_col, int bsize, |
| aom_reader *r, int skip) { |
| struct segmentation *const seg = &cm->seg; |
| const int mi_offset = mi_row * cm->mi_cols + mi_col; |
| const int bw = mi_size_wide[bsize]; |
| const int bh = mi_size_high[bsize]; |
| const int x_mis = AOMMIN(cm->mi_cols - mi_col, bw); |
| const int y_mis = AOMMIN(cm->mi_rows - mi_row, bh); |
| |
| if (!seg->enabled) return 0; // Default for disabled segmentation |
| |
| assert(seg->update_map && !seg->temporal_update); |
| |
| const int segment_id = read_segment_id(cm, xd, mi_row, mi_col, r, skip); |
| set_segment_id(cm, mi_offset, x_mis, y_mis, segment_id); |
| return segment_id; |
| } |
| |
| static void copy_segment_id(const AV1_COMMON *cm, |
| const uint8_t *last_segment_ids, |
| uint8_t *current_segment_ids, int mi_offset, |
| int x_mis, int y_mis) { |
| for (int y = 0; y < y_mis; y++) |
| for (int x = 0; x < x_mis; x++) |
| current_segment_ids[mi_offset + y * cm->mi_cols + x] = |
| last_segment_ids ? last_segment_ids[mi_offset + y * cm->mi_cols + x] |
| : 0; |
| } |
| |
| static int get_predicted_segment_id(AV1_COMMON *const cm, int mi_offset, |
| int x_mis, int y_mis) { |
| return cm->last_frame_seg_map ? dec_get_segment_id(cm, cm->last_frame_seg_map, |
| mi_offset, x_mis, y_mis) |
| : 0; |
| } |
| |
| static int read_inter_segment_id(AV1_COMMON *const cm, MACROBLOCKD *const xd, |
| int mi_row, int mi_col, int preskip, |
| aom_reader *r) { |
| struct segmentation *const seg = &cm->seg; |
| FRAME_CONTEXT *ec_ctx = xd->tile_ctx; |
| struct segmentation_probs *const segp = &ec_ctx->seg; |
| |
| MB_MODE_INFO *const mbmi = xd->mi[0]; |
| int segment_id; |
| const int mi_offset = mi_row * cm->mi_cols + mi_col; |
| const int bw = mi_size_wide[mbmi->sb_type]; |
| const int bh = mi_size_high[mbmi->sb_type]; |
| |
| // TODO(slavarnway): move x_mis, y_mis into xd ????? |
| const int x_mis = AOMMIN(cm->mi_cols - mi_col, bw); |
| const int y_mis = AOMMIN(cm->mi_rows - mi_row, bh); |
| |
| if (!seg->enabled) return 0; // Default for disabled segmentation |
| |
| if (!seg->update_map) { |
| copy_segment_id(cm, cm->last_frame_seg_map, cm->current_frame_seg_map, |
| mi_offset, x_mis, y_mis); |
| return get_predicted_segment_id(cm, mi_offset, x_mis, y_mis); |
| } |
| |
| if (preskip) { |
| if (!seg->preskip_segid) return 0; |
| } else { |
| if (seg->preskip_segid) return mbmi->segment_id; |
| if (mbmi->skip) { |
| if (seg->temporal_update) { |
| mbmi->seg_id_predicted = 0; |
| } |
| segment_id = read_segment_id(cm, xd, mi_row, mi_col, r, 1); |
| set_segment_id(cm, mi_offset, x_mis, y_mis, segment_id); |
| return segment_id; |
| } |
| } |
| (void)preskip; |
| if (seg->temporal_update) { |
| const int ctx = av1_get_pred_context_seg_id(xd); |
| aom_cdf_prob *pred_cdf = segp->pred_cdf[ctx]; |
| mbmi->seg_id_predicted = aom_read_symbol(r, pred_cdf, 2, ACCT_STR); |
| if (mbmi->seg_id_predicted) { |
| segment_id = get_predicted_segment_id(cm, mi_offset, x_mis, y_mis); |
| } else { |
| segment_id = read_segment_id(cm, xd, mi_row, mi_col, r, 0); |
| } |
| } else { |
| segment_id = read_segment_id(cm, xd, mi_row, mi_col, r, 0); |
| } |
| set_segment_id(cm, mi_offset, x_mis, y_mis, segment_id); |
| return segment_id; |
| } |
| |
| static int read_skip_mode(AV1_COMMON *cm, const MACROBLOCKD *xd, int segment_id, |
| aom_reader *r) { |
| if (!cm->skip_mode_flag) return 0; |
| |
| if (segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) { |
| return 0; |
| } |
| |
| if (!is_comp_ref_allowed(xd->mi[0]->sb_type)) return 0; |
| |
| const int ctx = av1_get_skip_mode_context(xd); |
| FRAME_CONTEXT *ec_ctx = xd->tile_ctx; |
| const int skip_mode = |
| aom_read_symbol(r, ec_ctx->skip_mode_cdfs[ctx], 2, ACCT_STR); |
| return skip_mode; |
| } |
| |
| static int read_skip(AV1_COMMON *cm, const MACROBLOCKD *xd, int segment_id, |
| aom_reader *r) { |
| if (segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) { |
| return 1; |
| } else { |
| const int ctx = av1_get_skip_context(xd); |
| FRAME_CONTEXT *ec_ctx = xd->tile_ctx; |
| const int skip = aom_read_symbol(r, ec_ctx->skip_cdfs[ctx], 2, ACCT_STR); |
| return skip; |
| } |
| } |
| |
| // Merge the sorted list of cached colors(cached_colors[0...n_cached_colors-1]) |
| // and the sorted list of transmitted colors(colors[n_cached_colors...n-1]) into |
| // one single sorted list(colors[...]). |
| static void merge_colors(uint16_t *colors, uint16_t *cached_colors, |
| int n_colors, int n_cached_colors) { |
| if (n_cached_colors == 0) return; |
| int cache_idx = 0, trans_idx = n_cached_colors; |
| for (int i = 0; i < n_colors; ++i) { |
| if (cache_idx < n_cached_colors && |
| (trans_idx >= n_colors || |
| cached_colors[cache_idx] <= colors[trans_idx])) { |
| colors[i] = cached_colors[cache_idx++]; |
| } else { |
| assert(trans_idx < n_colors); |
| colors[i] = colors[trans_idx++]; |
| } |
| } |
| } |
| |
| static void read_palette_colors_y(MACROBLOCKD *const xd, int bit_depth, |
| PALETTE_MODE_INFO *const pmi, aom_reader *r) { |
| uint16_t color_cache[2 * PALETTE_MAX_SIZE]; |
| uint16_t cached_colors[PALETTE_MAX_SIZE]; |
| const int n_cache = av1_get_palette_cache(xd, 0, color_cache); |
| const int n = pmi->palette_size[0]; |
| int idx = 0; |
| for (int i = 0; i < n_cache && idx < n; ++i) |
| if (aom_read_bit(r, ACCT_STR)) cached_colors[idx++] = color_cache[i]; |
| if (idx < n) { |
| const int n_cached_colors = idx; |
| pmi->palette_colors[idx++] = aom_read_literal(r, bit_depth, ACCT_STR); |
| if (idx < n) { |
| const int min_bits = bit_depth - 3; |
| int bits = min_bits + aom_read_literal(r, 2, ACCT_STR); |
| int range = (1 << bit_depth) - pmi->palette_colors[idx - 1] - 1; |
| for (; idx < n; ++idx) { |
| assert(range >= 0); |
| const int delta = aom_read_literal(r, bits, ACCT_STR) + 1; |
| pmi->palette_colors[idx] = clamp(pmi->palette_colors[idx - 1] + delta, |
| 0, (1 << bit_depth) - 1); |
| range -= (pmi->palette_colors[idx] - pmi->palette_colors[idx - 1]); |
| bits = AOMMIN(bits, av1_ceil_log2(range)); |
| } |
| } |
| merge_colors(pmi->palette_colors, cached_colors, n, n_cached_colors); |
| } else { |
| memcpy(pmi->palette_colors, cached_colors, n * sizeof(cached_colors[0])); |
| } |
| } |
| |
| static void read_palette_colors_uv(MACROBLOCKD *const xd, int bit_depth, |
| PALETTE_MODE_INFO *const pmi, |
| aom_reader *r) { |
| const int n = pmi->palette_size[1]; |
| // U channel colors. |
| uint16_t color_cache[2 * PALETTE_MAX_SIZE]; |
| uint16_t cached_colors[PALETTE_MAX_SIZE]; |
| const int n_cache = av1_get_palette_cache(xd, 1, color_cache); |
| int idx = 0; |
| for (int i = 0; i < n_cache && idx < n; ++i) |
| if (aom_read_bit(r, ACCT_STR)) cached_colors[idx++] = color_cache[i]; |
| if (idx < n) { |
| const int n_cached_colors = idx; |
| idx += PALETTE_MAX_SIZE; |
| pmi->palette_colors[idx++] = aom_read_literal(r, bit_depth, ACCT_STR); |
| if (idx < PALETTE_MAX_SIZE + n) { |
| const int min_bits = bit_depth - 3; |
| int bits = min_bits + aom_read_literal(r, 2, ACCT_STR); |
| int range = (1 << bit_depth) - pmi->palette_colors[idx - 1]; |
| for (; idx < PALETTE_MAX_SIZE + n; ++idx) { |
| assert(range >= 0); |
| const int delta = aom_read_literal(r, bits, ACCT_STR); |
| pmi->palette_colors[idx] = clamp(pmi->palette_colors[idx - 1] + delta, |
| 0, (1 << bit_depth) - 1); |
| range -= (pmi->palette_colors[idx] - pmi->palette_colors[idx - 1]); |
| bits = AOMMIN(bits, av1_ceil_log2(range)); |
| } |
| } |
| merge_colors(pmi->palette_colors + PALETTE_MAX_SIZE, cached_colors, n, |
| n_cached_colors); |
| } else { |
| memcpy(pmi->palette_colors + PALETTE_MAX_SIZE, cached_colors, |
| n * sizeof(cached_colors[0])); |
| } |
| |
| // V channel colors. |
| if (aom_read_bit(r, ACCT_STR)) { // Delta encoding. |
| const int min_bits_v = bit_depth - 4; |
| const int max_val = 1 << bit_depth; |
| int bits = min_bits_v + aom_read_literal(r, 2, ACCT_STR); |
| pmi->palette_colors[2 * PALETTE_MAX_SIZE] = |
| aom_read_literal(r, bit_depth, ACCT_STR); |
| for (int i = 1; i < n; ++i) { |
| int delta = aom_read_literal(r, bits, ACCT_STR); |
| if (delta && aom_read_bit(r, ACCT_STR)) delta = -delta; |
| int val = (int)pmi->palette_colors[2 * PALETTE_MAX_SIZE + i - 1] + delta; |
| if (val < 0) val += max_val; |
| if (val >= max_val) val -= max_val; |
| pmi->palette_colors[2 * PALETTE_MAX_SIZE + i] = val; |
| } |
| } else { |
| for (int i = 0; i < n; ++i) { |
| pmi->palette_colors[2 * PALETTE_MAX_SIZE + i] = |
| aom_read_literal(r, bit_depth, ACCT_STR); |
| } |
| } |
| } |
| |
| static void read_palette_mode_info(AV1_COMMON *const cm, MACROBLOCKD *const xd, |
| int mi_row, int mi_col, aom_reader *r) { |
| const int num_planes = av1_num_planes(cm); |
| MB_MODE_INFO *const mbmi = xd->mi[0]; |
| const BLOCK_SIZE bsize = mbmi->sb_type; |
| assert(av1_allow_palette(cm->allow_screen_content_tools, bsize)); |
| PALETTE_MODE_INFO *const pmi = &mbmi->palette_mode_info; |
| const int bsize_ctx = av1_get_palette_bsize_ctx(bsize); |
| |
| if (mbmi->mode == DC_PRED) { |
| const int palette_mode_ctx = av1_get_palette_mode_ctx(xd); |
| const int modev = aom_read_symbol( |
| r, xd->tile_ctx->palette_y_mode_cdf[bsize_ctx][palette_mode_ctx], 2, |
| ACCT_STR); |
| if (modev) { |
| pmi->palette_size[0] = |
| aom_read_symbol(r, xd->tile_ctx->palette_y_size_cdf[bsize_ctx], |
| PALETTE_SIZES, ACCT_STR) + |
| 2; |
| read_palette_colors_y(xd, cm->bit_depth, pmi, r); |
| } |
| } |
| if (num_planes > 1 && mbmi->uv_mode == UV_DC_PRED && |
| is_chroma_reference(mi_row, mi_col, bsize, xd->plane[1].subsampling_x, |
| xd->plane[1].subsampling_y)) { |
| const int palette_uv_mode_ctx = (pmi->palette_size[0] > 0); |
| const int modev = aom_read_symbol( |
| r, xd->tile_ctx->palette_uv_mode_cdf[palette_uv_mode_ctx], 2, ACCT_STR); |
| if (modev) { |
| pmi->palette_size[1] = |
| aom_read_symbol(r, xd->tile_ctx->palette_uv_size_cdf[bsize_ctx], |
| PALETTE_SIZES, ACCT_STR) + |
| 2; |
| read_palette_colors_uv(xd, cm->bit_depth, pmi, r); |
| } |
| } |
| } |
| |
| static int read_angle_delta(aom_reader *r, aom_cdf_prob *cdf) { |
| const int sym = aom_read_symbol(r, cdf, 2 * MAX_ANGLE_DELTA + 1, ACCT_STR); |
| return sym - MAX_ANGLE_DELTA; |
| } |
| |
| static void read_filter_intra_mode_info(const AV1_COMMON *const cm, |
| MACROBLOCKD *const xd, aom_reader *r) { |
| MB_MODE_INFO *const mbmi = xd->mi[0]; |
| FILTER_INTRA_MODE_INFO *filter_intra_mode_info = |
| &mbmi->filter_intra_mode_info; |
| |
| if (av1_filter_intra_allowed(cm, mbmi)) { |
| filter_intra_mode_info->use_filter_intra = aom_read_symbol( |
| r, xd->tile_ctx->filter_intra_cdfs[mbmi->sb_type], 2, ACCT_STR); |
| if (filter_intra_mode_info->use_filter_intra) { |
| filter_intra_mode_info->filter_intra_mode = aom_read_symbol( |
| r, xd->tile_ctx->filter_intra_mode_cdf, FILTER_INTRA_MODES, ACCT_STR); |
| } |
| } else { |
| filter_intra_mode_info->use_filter_intra = 0; |
| } |
| } |
| |
| void av1_read_tx_type(const AV1_COMMON *const cm, MACROBLOCKD *xd, int blk_row, |
| int blk_col, int plane, TX_SIZE tx_size, aom_reader *r) { |
| MB_MODE_INFO *mbmi = xd->mi[0]; |
| const int inter_block = is_inter_block(mbmi); |
| FRAME_CONTEXT *ec_ctx = xd->tile_ctx; |
| |
| // only y plane's tx_type is transmitted |
| if (plane > 0) return; |
| const int txk_type_idx = |
| av1_get_txk_type_index(mbmi->sb_type, blk_row, blk_col); |
| TX_TYPE *tx_type = &mbmi->txk_type[txk_type_idx]; |
| |
| const TX_SIZE square_tx_size = txsize_sqr_map[tx_size]; |
| if (get_ext_tx_types(tx_size, inter_block, cm->reduced_tx_set_used) > 1 && |
| ((!cm->seg.enabled && cm->base_qindex > 0) || |
| (cm->seg.enabled && xd->qindex[mbmi->segment_id] > 0)) && |
| !mbmi->skip && |
| !segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) { |
| const TxSetType tx_set_type = |
| get_ext_tx_set_type(tx_size, inter_block, cm->reduced_tx_set_used); |
| const int eset = |
| get_ext_tx_set(tx_size, inter_block, cm->reduced_tx_set_used); |
| // eset == 0 should correspond to a set with only DCT_DCT and |
| // there is no need to read the tx_type |
| assert(eset != 0); |
| |
| if (inter_block) { |
| *tx_type = av1_ext_tx_inv[tx_set_type][aom_read_symbol( |
| r, ec_ctx->inter_ext_tx_cdf[eset][square_tx_size], |
| av1_num_ext_tx_set[tx_set_type], ACCT_STR)]; |
| } else { |
| PREDICTION_MODE intra_dir; |
| if (mbmi->filter_intra_mode_info.use_filter_intra) |
| intra_dir = |
| fimode_to_intradir[mbmi->filter_intra_mode_info.filter_intra_mode]; |
| else |
| intra_dir = mbmi->mode; |
| *tx_type = av1_ext_tx_inv[tx_set_type][aom_read_symbol( |
| r, ec_ctx->intra_ext_tx_cdf[eset][square_tx_size][intra_dir], |
| av1_num_ext_tx_set[tx_set_type], ACCT_STR)]; |
| } |
| } else { |
| *tx_type = DCT_DCT; |
| } |
| } |
| |
| static INLINE void read_mv(aom_reader *r, MV *mv, const MV *ref, |
| nmv_context *ctx, MvSubpelPrecision precision); |
| |
| static INLINE int is_mv_valid(const MV *mv); |
| |
| static INLINE int assign_dv(AV1_COMMON *cm, MACROBLOCKD *xd, int_mv *mv, |
| const int_mv *ref_mv, int mi_row, int mi_col, |
| BLOCK_SIZE bsize, aom_reader *r) { |
| FRAME_CONTEXT *ec_ctx = xd->tile_ctx; |
| read_mv(r, &mv->as_mv, &ref_mv->as_mv, &ec_ctx->ndvc, MV_SUBPEL_NONE); |
| // DV should not have sub-pel. |
| assert((mv->as_mv.col & 7) == 0); |
| assert((mv->as_mv.row & 7) == 0); |
| mv->as_mv.col = (mv->as_mv.col >> 3) * 8; |
| mv->as_mv.row = (mv->as_mv.row >> 3) * 8; |
| int valid = is_mv_valid(&mv->as_mv) && |
| av1_is_dv_valid(mv->as_mv, &xd->tile, mi_row, mi_col, bsize, |
| cm->seq_params.mib_size_log2); |
| return valid; |
| } |
| |
| static void read_intrabc_info(AV1_COMMON *const cm, MACROBLOCKD *const xd, |
| int mi_row, int mi_col, aom_reader *r) { |
| MB_MODE_INFO *const mbmi = xd->mi[0]; |
| FRAME_CONTEXT *ec_ctx = xd->tile_ctx; |
| mbmi->use_intrabc = aom_read_symbol(r, ec_ctx->intrabc_cdf, 2, ACCT_STR); |
| if (mbmi->use_intrabc) { |
| BLOCK_SIZE bsize = mbmi->sb_type; |
| mbmi->mode = DC_PRED; |
| mbmi->uv_mode = UV_DC_PRED; |
| mbmi->interp_filters = av1_broadcast_interp_filter(BILINEAR); |
| mbmi->motion_mode = SIMPLE_TRANSLATION; |
| |
| int16_t inter_mode_ctx[MODE_CTX_REF_FRAMES]; |
| int_mv ref_mvs[INTRA_FRAME + 1][MAX_MV_REF_CANDIDATES]; |
| |
| av1_find_mv_refs(cm, xd, mbmi, INTRA_FRAME, xd->ref_mv_count, |
| xd->ref_mv_stack, ref_mvs, mi_row, mi_col, inter_mode_ctx); |
| |
| int_mv nearestmv, nearmv; |
| |
| av1_find_best_ref_mvs(0, ref_mvs[INTRA_FRAME], &nearestmv, &nearmv, 0); |
| int_mv dv_ref = nearestmv.as_int == 0 ? nearmv : nearestmv; |
| if (dv_ref.as_int == 0) |
| av1_find_ref_dv(&dv_ref, &xd->tile, cm->seq_params.mib_size, mi_row, |
| mi_col); |
| // Ref DV should not have sub-pel. |
| int valid_dv = (dv_ref.as_mv.col & 7) == 0 && (dv_ref.as_mv.row & 7) == 0; |
| dv_ref.as_mv.col = (dv_ref.as_mv.col >> 3) * 8; |
| dv_ref.as_mv.row = (dv_ref.as_mv.row >> 3) * 8; |
| valid_dv = valid_dv && assign_dv(cm, xd, &mbmi->mv[0], &dv_ref, mi_row, |
| mi_col, bsize, r); |
| if (!valid_dv) { |
| // Intra bc motion vectors are not valid - signal corrupt frame |
| aom_merge_corrupted_flag(&xd->corrupted, 1); |
| } |
| } |
| } |
| |
| static void read_intra_frame_mode_info(AV1_COMMON *const cm, |
| MACROBLOCKD *const xd, int mi_row, |
| int mi_col, aom_reader *r) { |
| MB_MODE_INFO *const mbmi = xd->mi[0]; |
| const MB_MODE_INFO *above_mi = xd->above_mbmi; |
| const MB_MODE_INFO *left_mi = xd->left_mbmi; |
| const BLOCK_SIZE bsize = mbmi->sb_type; |
| struct segmentation *const seg = &cm->seg; |
| |
| FRAME_CONTEXT *ec_ctx = xd->tile_ctx; |
| |
| if (seg->preskip_segid) |
| mbmi->segment_id = |
| read_intra_segment_id(cm, xd, mi_row, mi_col, bsize, r, 0); |
| |
| mbmi->skip = read_skip(cm, xd, mbmi->segment_id, r); |
| |
| if (!seg->preskip_segid) |
| mbmi->segment_id = |
| read_intra_segment_id(cm, xd, mi_row, mi_col, bsize, r, mbmi->skip); |
| |
| read_cdef(cm, r, mbmi, mi_col, mi_row); |
| |
| if (cm->delta_q_present_flag) { |
| xd->current_qindex = |
| xd->prev_qindex + |
| read_delta_qindex(cm, xd, r, mbmi, mi_col, mi_row) * cm->delta_q_res; |
| /* Normative: Clamp to [1,MAXQ] to not interfere with lossless mode */ |
| xd->current_qindex = clamp(xd->current_qindex, 1, MAXQ); |
| xd->prev_qindex = xd->current_qindex; |
| if (cm->delta_lf_present_flag) { |
| if (cm->delta_lf_multi) { |
| const int frame_lf_count = |
| av1_num_planes(cm) > 1 ? FRAME_LF_COUNT : FRAME_LF_COUNT - 2; |
| for (int lf_id = 0; lf_id < frame_lf_count; ++lf_id) { |
| const int tmp_lvl = |
| xd->prev_delta_lf[lf_id] + |
| read_delta_lflevel(cm, xd, r, lf_id, mbmi, mi_col, mi_row) * |
| cm->delta_lf_res; |
| mbmi->curr_delta_lf[lf_id] = xd->curr_delta_lf[lf_id] = |
| clamp(tmp_lvl, -MAX_LOOP_FILTER, MAX_LOOP_FILTER); |
| xd->prev_delta_lf[lf_id] = xd->curr_delta_lf[lf_id]; |
| } |
| } else { |
| const int tmp_lvl = |
| xd->prev_delta_lf_from_base + |
| read_delta_lflevel(cm, xd, r, -1, mbmi, mi_col, mi_row) * |
| cm->delta_lf_res; |
| mbmi->current_delta_lf_from_base = xd->current_delta_lf_from_base = |
| clamp(tmp_lvl, -MAX_LOOP_FILTER, MAX_LOOP_FILTER); |
| xd->prev_delta_lf_from_base = xd->current_delta_lf_from_base; |
| } |
| } |
| } |
| |
| mbmi->current_q_index = xd->current_qindex; |
| |
| mbmi->ref_frame[0] = INTRA_FRAME; |
| mbmi->ref_frame[1] = NONE_FRAME; |
| mbmi->palette_mode_info.palette_size[0] = 0; |
| mbmi->palette_mode_info.palette_size[1] = 0; |
| mbmi->filter_intra_mode_info.use_filter_intra = 0; |
| |
| xd->above_txfm_context = |
| cm->above_txfm_context + (mi_col << TX_UNIT_WIDE_LOG2); |
| xd->left_txfm_context = xd->left_txfm_context_buffer + |
| ((mi_row & MAX_MIB_MASK) << TX_UNIT_HIGH_LOG2); |
| |
| if (av1_allow_intrabc(cm)) { |
| read_intrabc_info(cm, xd, mi_row, mi_col, r); |
| if (is_intrabc_block(mbmi)) return; |
| } |
| |
| mbmi->mode = read_intra_mode(r, get_y_mode_cdf(ec_ctx, above_mi, left_mi)); |
| |
| const int use_angle_delta = av1_use_angle_delta(bsize); |
| mbmi->angle_delta[PLANE_TYPE_Y] = |
| (use_angle_delta && av1_is_directional_mode(mbmi->mode)) |
| ? read_angle_delta(r, ec_ctx->angle_delta_cdf[mbmi->mode - V_PRED]) |
| : 0; |
| |
| if (!cm->seq_params.monochrome && |
| is_chroma_reference(mi_row, mi_col, bsize, xd->plane[1].subsampling_x, |
| xd->plane[1].subsampling_y)) { |
| xd->cfl.is_chroma_reference = 1; |
| mbmi->uv_mode = |
| read_intra_mode_uv(ec_ctx, r, is_cfl_allowed(xd), mbmi->mode); |
| if (mbmi->uv_mode == UV_CFL_PRED) { |
| mbmi->cfl_alpha_idx = read_cfl_alphas(ec_ctx, r, &mbmi->cfl_alpha_signs); |
| xd->cfl.store_y = 1; |
| } else { |
| xd->cfl.store_y = 0; |
| } |
| mbmi->angle_delta[PLANE_TYPE_UV] = |
| (use_angle_delta && av1_is_directional_mode(get_uv_mode(mbmi->uv_mode))) |
| ? read_angle_delta(r, |
| ec_ctx->angle_delta_cdf[mbmi->uv_mode - V_PRED]) |
| : 0; |
| } else { |
| // Avoid decoding angle_info if there is is no chroma prediction |
| mbmi->uv_mode = UV_DC_PRED; |
| xd->cfl.is_chroma_reference = 0; |
| xd->cfl.store_y = 1; |
| } |
| |
| if (av1_allow_palette(cm->allow_screen_content_tools, bsize)) |
| read_palette_mode_info(cm, xd, mi_row, mi_col, r); |
| |
| read_filter_intra_mode_info(cm, xd, r); |
| } |
| |
| static int read_mv_component(aom_reader *r, nmv_component *mvcomp, |
| int use_subpel, int usehp) { |
| int mag, d, fr, hp; |
| const int sign = aom_read_symbol(r, mvcomp->sign_cdf, 2, ACCT_STR); |
| const int mv_class = |
| aom_read_symbol(r, mvcomp->classes_cdf, MV_CLASSES, ACCT_STR); |
| const int class0 = mv_class == MV_CLASS_0; |
| |
| // Integer part |
| if (class0) { |
| d = aom_read_symbol(r, mvcomp->class0_cdf, CLASS0_SIZE, ACCT_STR); |
| mag = 0; |
| } else { |
| const int n = mv_class + CLASS0_BITS - 1; // number of bits |
| d = 0; |
| for (int i = 0; i < n; ++i) |
| d |= aom_read_symbol(r, mvcomp->bits_cdf[i], 2, ACCT_STR) << i; |
| mag = CLASS0_SIZE << (mv_class + 2); |
| } |
| |
| if (use_subpel) { |
| // Fractional part |
| fr = aom_read_symbol(r, class0 ? mvcomp->class0_fp_cdf[d] : mvcomp->fp_cdf, |
| MV_FP_SIZE, ACCT_STR); |
| |
| // High precision part (if hp is not used, the default value of the hp is 1) |
| hp = usehp ? aom_read_symbol( |
| r, class0 ? mvcomp->class0_hp_cdf : mvcomp->hp_cdf, 2, |
| ACCT_STR) |
| : 1; |
| } else { |
| fr = 3; |
| hp = 1; |
| } |
| |
| // Result |
| mag += ((d << 3) | (fr << 1) | hp) + 1; |
| return sign ? -mag : mag; |
| } |
| |
| static INLINE void read_mv(aom_reader *r, MV *mv, const MV *ref, |
| nmv_context *ctx, MvSubpelPrecision precision) { |
| MV diff = { 0, 0 }; |
| const MV_JOINT_TYPE joint_type = |
| (MV_JOINT_TYPE)aom_read_symbol(r, ctx->joints_cdf, MV_JOINTS, ACCT_STR); |
| |
| if (mv_joint_vertical(joint_type)) |
| diff.row = read_mv_component(r, &ctx->comps[0], precision > MV_SUBPEL_NONE, |
| precision > MV_SUBPEL_LOW_PRECISION); |
| |
| if (mv_joint_horizontal(joint_type)) |
| diff.col = read_mv_component(r, &ctx->comps[1], precision > MV_SUBPEL_NONE, |
| precision > MV_SUBPEL_LOW_PRECISION); |
| |
| mv->row = ref->row + diff.row; |
| mv->col = ref->col + diff.col; |
| } |
| |
| static REFERENCE_MODE read_block_reference_mode(AV1_COMMON *cm, |
| const MACROBLOCKD *xd, |
| aom_reader *r) { |
| if (!is_comp_ref_allowed(xd->mi[0]->sb_type)) return SINGLE_REFERENCE; |
| if (cm->reference_mode == REFERENCE_MODE_SELECT) { |
| const int ctx = av1_get_reference_mode_context(xd); |
| const REFERENCE_MODE mode = (REFERENCE_MODE)aom_read_symbol( |
| r, xd->tile_ctx->comp_inter_cdf[ctx], 2, ACCT_STR); |
| return mode; // SINGLE_REFERENCE or COMPOUND_REFERENCE |
| } else { |
| assert(cm->reference_mode == SINGLE_REFERENCE); |
| return cm->reference_mode; |
| } |
| } |
| |
| #define READ_REF_BIT(pname) \ |
| aom_read_symbol(r, av1_get_pred_cdf_##pname(xd), 2, ACCT_STR) |
| |
| static COMP_REFERENCE_TYPE read_comp_reference_type(const MACROBLOCKD *xd, |
| aom_reader *r) { |
| const int ctx = av1_get_comp_reference_type_context(xd); |
| const COMP_REFERENCE_TYPE comp_ref_type = |
| (COMP_REFERENCE_TYPE)aom_read_symbol( |
| r, xd->tile_ctx->comp_ref_type_cdf[ctx], 2, ACCT_STR); |
| return comp_ref_type; // UNIDIR_COMP_REFERENCE or BIDIR_COMP_REFERENCE |
| } |
| |
| static void set_ref_frames_for_skip_mode(AV1_COMMON *const cm, |
| MV_REFERENCE_FRAME ref_frame[2]) { |
| ref_frame[0] = LAST_FRAME + cm->ref_frame_idx_0; |
| ref_frame[1] = LAST_FRAME + cm->ref_frame_idx_1; |
| } |
| |
| // Read the referncence frame |
| static void read_ref_frames(AV1_COMMON *const cm, MACROBLOCKD *const xd, |
| aom_reader *r, int segment_id, |
| MV_REFERENCE_FRAME ref_frame[2]) { |
| if (xd->mi[0]->skip_mode) { |
| set_ref_frames_for_skip_mode(cm, ref_frame); |
| return; |
| } |
| |
| if (segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { |
| ref_frame[0] = (MV_REFERENCE_FRAME)get_segdata(&cm->seg, segment_id, |
| SEG_LVL_REF_FRAME); |
| ref_frame[1] = NONE_FRAME; |
| } else if (segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP) || |
| segfeature_active(&cm->seg, segment_id, SEG_LVL_GLOBALMV)) { |
| ref_frame[0] = LAST_FRAME; |
| ref_frame[1] = NONE_FRAME; |
| } else { |
| const REFERENCE_MODE mode = read_block_reference_mode(cm, xd, r); |
| |
| if (mode == COMPOUND_REFERENCE) { |
| const COMP_REFERENCE_TYPE comp_ref_type = read_comp_reference_type(xd, r); |
| |
| if (comp_ref_type == UNIDIR_COMP_REFERENCE) { |
| const int bit = READ_REF_BIT(uni_comp_ref_p); |
| if (bit) { |
| ref_frame[0] = BWDREF_FRAME; |
| ref_frame[1] = ALTREF_FRAME; |
| } else { |
| const int bit1 = READ_REF_BIT(uni_comp_ref_p1); |
| if (bit1) { |
| const int bit2 = READ_REF_BIT(uni_comp_ref_p2); |
| if (bit2) { |
| ref_frame[0] = LAST_FRAME; |
| ref_frame[1] = GOLDEN_FRAME; |
| } else { |
| ref_frame[0] = LAST_FRAME; |
| ref_frame[1] = LAST3_FRAME; |
| } |
| } else { |
| ref_frame[0] = LAST_FRAME; |
| ref_frame[1] = LAST2_FRAME; |
| } |
| } |
| |
| return; |
| } |
| |
| assert(comp_ref_type == BIDIR_COMP_REFERENCE); |
| |
| const int idx = 1; |
| const int bit = READ_REF_BIT(comp_ref_p); |
| // Decode forward references. |
| if (!bit) { |
| const int bit1 = READ_REF_BIT(comp_ref_p1); |
| ref_frame[!idx] = cm->comp_fwd_ref[bit1 ? 1 : 0]; |
| } else { |
| const int bit2 = READ_REF_BIT(comp_ref_p2); |
| ref_frame[!idx] = cm->comp_fwd_ref[bit2 ? 3 : 2]; |
| } |
| |
| // Decode backward references. |
| const int bit_bwd = READ_REF_BIT(comp_bwdref_p); |
| if (!bit_bwd) { |
| const int bit1_bwd = READ_REF_BIT(comp_bwdref_p1); |
| ref_frame[idx] = cm->comp_bwd_ref[bit1_bwd]; |
| } else { |
| ref_frame[idx] = cm->comp_bwd_ref[2]; |
| } |
| } else if (mode == SINGLE_REFERENCE) { |
| const int bit0 = READ_REF_BIT(single_ref_p1); |
| if (bit0) { |
| const int bit1 = READ_REF_BIT(single_ref_p2); |
| if (!bit1) { |
| const int bit5 = READ_REF_BIT(single_ref_p6); |
| ref_frame[0] = bit5 ? ALTREF2_FRAME : BWDREF_FRAME; |
| } else { |
| ref_frame[0] = ALTREF_FRAME; |
| } |
| } else { |
| const int bit2 = READ_REF_BIT(single_ref_p3); |
| if (bit2) { |
| const int bit4 = READ_REF_BIT(single_ref_p5); |
| ref_frame[0] = bit4 ? GOLDEN_FRAME : LAST3_FRAME; |
| } else { |
| const int bit3 = READ_REF_BIT(single_ref_p4); |
| ref_frame[0] = bit3 ? LAST2_FRAME : LAST_FRAME; |
| } |
| } |
| |
| ref_frame[1] = NONE_FRAME; |
| } else { |
| assert(0 && "Invalid prediction mode."); |
| } |
| } |
| } |
| |
| static INLINE void read_mb_interp_filter(AV1_COMMON *const cm, |
| MACROBLOCKD *const xd, |
| MB_MODE_INFO *const mbmi, |
| aom_reader *r) { |
| FRAME_CONTEXT *ec_ctx = xd->tile_ctx; |
| |
| if (!av1_is_interp_needed(xd)) { |
| set_default_interp_filters(mbmi, cm->interp_filter); |
| return; |
| } |
| |
| if (cm->interp_filter != SWITCHABLE) { |
| mbmi->interp_filters = av1_broadcast_interp_filter(cm->interp_filter); |
| } else { |
| InterpFilter ref0_filter[2] = { EIGHTTAP_REGULAR, EIGHTTAP_REGULAR }; |
| for (int dir = 0; dir < 2; ++dir) { |
| const int ctx = av1_get_pred_context_switchable_interp(xd, dir); |
| ref0_filter[dir] = (InterpFilter)aom_read_symbol( |
| r, ec_ctx->switchable_interp_cdf[ctx], SWITCHABLE_FILTERS, ACCT_STR); |
| if (cm->seq_params.enable_dual_filter == 0) { |
| ref0_filter[1] = ref0_filter[0]; |
| break; |
| } |
| } |
| // The index system works as: (0, 1) -> (vertical, horizontal) filter types |
| mbmi->interp_filters = |
| av1_make_interp_filters(ref0_filter[0], ref0_filter[1]); |
| } |
| } |
| |
| static void read_intra_block_mode_info(AV1_COMMON *const cm, const int mi_row, |
| const int mi_col, MACROBLOCKD *const xd, |
| MB_MODE_INFO *const mbmi, |
| aom_reader *r) { |
| const BLOCK_SIZE bsize = mbmi->sb_type; |
| const int use_angle_delta = av1_use_angle_delta(bsize); |
| |
| mbmi->ref_frame[0] = INTRA_FRAME; |
| mbmi->ref_frame[1] = NONE_FRAME; |
| |
| FRAME_CONTEXT *ec_ctx = xd->tile_ctx; |
| |
| mbmi->mode = read_intra_mode(r, ec_ctx->y_mode_cdf[size_group_lookup[bsize]]); |
| |
| mbmi->angle_delta[PLANE_TYPE_Y] = |
| use_angle_delta && av1_is_directional_mode(mbmi->mode) |
| ? read_angle_delta(r, ec_ctx->angle_delta_cdf[mbmi->mode - V_PRED]) |
| : 0; |
| if (!cm->seq_params.monochrome && |
| is_chroma_reference(mi_row, mi_col, bsize, xd->plane[1].subsampling_x, |
| xd->plane[1].subsampling_y)) { |
| mbmi->uv_mode = |
| read_intra_mode_uv(ec_ctx, r, is_cfl_allowed(xd), mbmi->mode); |
| if (mbmi->uv_mode == UV_CFL_PRED) { |
| mbmi->cfl_alpha_idx = |
| read_cfl_alphas(xd->tile_ctx, r, &mbmi->cfl_alpha_signs); |
| xd->cfl.store_y = 1; |
| } else { |
| xd->cfl.store_y = 0; |
| } |
| mbmi->angle_delta[PLANE_TYPE_UV] = |
| use_angle_delta && av1_is_directional_mode(get_uv_mode(mbmi->uv_mode)) |
| ? read_angle_delta(r, |
| ec_ctx->angle_delta_cdf[mbmi->uv_mode - V_PRED]) |
| : 0; |
| } else { |
| // Avoid decoding angle_info if there is is no chroma prediction |
| mbmi->uv_mode = UV_DC_PRED; |
| xd->cfl.is_chroma_reference = 0; |
| xd->cfl.store_y = 1; |
| } |
| |
| mbmi->palette_mode_info.palette_size[0] = 0; |
| mbmi->palette_mode_info.palette_size[1] = 0; |
| if (av1_allow_palette(cm->allow_screen_content_tools, bsize)) |
| read_palette_mode_info(cm, xd, mi_row, mi_col, r); |
| |
| read_filter_intra_mode_info(cm, xd, r); |
| } |
| |
| static INLINE int is_mv_valid(const MV *mv) { |
| return mv->row > MV_LOW && mv->row < MV_UPP && mv->col > MV_LOW && |
| mv->col < MV_UPP; |
| } |
| |
| static INLINE int assign_mv(AV1_COMMON *cm, MACROBLOCKD *xd, |
| PREDICTION_MODE mode, |
| MV_REFERENCE_FRAME ref_frame[2], int_mv mv[2], |
| int_mv ref_mv[2], int_mv nearest_mv[2], |
| int_mv near_mv[2], int mi_row, int mi_col, |
| int is_compound, int allow_hp, aom_reader *r) { |
| int ret = 1; |
| FRAME_CONTEXT *ec_ctx = xd->tile_ctx; |
| MB_MODE_INFO *mbmi = xd->mi[0]; |
| BLOCK_SIZE bsize = mbmi->sb_type; |
| int_mv *pred_mv = mbmi->pred_mv; |
| if (cm->cur_frame_force_integer_mv) { |
| allow_hp = MV_SUBPEL_NONE; |
| } |
| switch (mode) { |
| case NEWMV: { |
| for (int i = 0; i < 1 + is_compound; ++i) { |
| nmv_context *const nmvc = &ec_ctx->nmvc; |
| read_mv(r, &mv[i].as_mv, &ref_mv[i].as_mv, nmvc, allow_hp); |
| ret = ret && is_mv_valid(&mv[i].as_mv); |
| |
| pred_mv[i].as_int = ref_mv[i].as_int; |
| } |
| break; |
| } |
| case NEARESTMV: { |
| mv[0].as_int = nearest_mv[0].as_int; |
| if (is_compound) mv[1].as_int = nearest_mv[1].as_int; |
| |
| pred_mv[0].as_int = nearest_mv[0].as_int; |
| if (is_compound) pred_mv[1].as_int = nearest_mv[1].as_int; |
| break; |
| } |
| case NEARMV: { |
| mv[0].as_int = near_mv[0].as_int; |
| if (is_compound) mv[1].as_int = near_mv[1].as_int; |
| |
| pred_mv[0].as_int = near_mv[0].as_int; |
| if (is_compound) pred_mv[1].as_int = near_mv[1].as_int; |
| break; |
| } |
| case GLOBALMV: { |
| mv[0].as_int = |
| gm_get_motion_vector(&cm->global_motion[ref_frame[0]], |
| cm->allow_high_precision_mv, bsize, mi_col, |
| mi_row, cm->cur_frame_force_integer_mv) |
| .as_int; |
| if (is_compound) |
| mv[1].as_int = |
| gm_get_motion_vector(&cm->global_motion[ref_frame[1]], |
| cm->allow_high_precision_mv, bsize, mi_col, |
| mi_row, cm->cur_frame_force_integer_mv) |
| .as_int; |
| |
| pred_mv[0].as_int = mv[0].as_int; |
| if (is_compound) pred_mv[1].as_int = mv[1].as_int; |
| break; |
| } |
| case NEW_NEWMV: { |
| assert(is_compound); |
| for (int i = 0; i < 2; ++i) { |
| nmv_context *const nmvc = &ec_ctx->nmvc; |
| read_mv(r, &mv[i].as_mv, &ref_mv[i].as_mv, nmvc, allow_hp); |
| ret = ret && is_mv_valid(&mv[i].as_mv); |
| } |
| break; |
| } |
| case NEAREST_NEARESTMV: { |
| assert(is_compound); |
| mv[0].as_int = nearest_mv[0].as_int; |
| mv[1].as_int = nearest_mv[1].as_int; |
| break; |
| } |
| case NEAR_NEARMV: { |
| assert(is_compound); |
| mv[0].as_int = near_mv[0].as_int; |
| mv[1].as_int = near_mv[1].as_int; |
| break; |
| } |
| case NEW_NEARESTMV: { |
| nmv_context *const nmvc = &ec_ctx->nmvc; |
| read_mv(r, &mv[0].as_mv, &ref_mv[0].as_mv, nmvc, allow_hp); |
| assert(is_compound); |
| ret = ret && is_mv_valid(&mv[0].as_mv); |
| mv[1].as_int = nearest_mv[1].as_int; |
| break; |
| } |
| case NEAREST_NEWMV: { |
| nmv_context *const nmvc = &ec_ctx->nmvc; |
| mv[0].as_int = nearest_mv[0].as_int; |
| read_mv(r, &mv[1].as_mv, &ref_mv[1].as_mv, nmvc, allow_hp); |
| assert(is_compound); |
| ret = ret && is_mv_valid(&mv[1].as_mv); |
| break; |
| } |
| case NEAR_NEWMV: { |
| nmv_context *const nmvc = &ec_ctx->nmvc; |
| mv[0].as_int = near_mv[0].as_int; |
| read_mv(r, &mv[1].as_mv, &ref_mv[1].as_mv, nmvc, allow_hp); |
| assert(is_compound); |
| |
| ret = ret && is_mv_valid(&mv[1].as_mv); |
| break; |
| } |
| case NEW_NEARMV: { |
| nmv_context *const nmvc = &ec_ctx->nmvc; |
| read_mv(r, &mv[0].as_mv, &ref_mv[0].as_mv, nmvc, allow_hp); |
| assert(is_compound); |
| ret = ret && is_mv_valid(&mv[0].as_mv); |
| mv[1].as_int = near_mv[1].as_int; |
| break; |
| } |
| case GLOBAL_GLOBALMV: { |
| assert(is_compound); |
| mv[0].as_int = |
| gm_get_motion_vector(&cm->global_motion[ref_frame[0]], |
| cm->allow_high_precision_mv, bsize, mi_col, |
| mi_row, cm->cur_frame_force_integer_mv) |
| .as_int; |
| mv[1].as_int = |
| gm_get_motion_vector(&cm->global_motion[ref_frame[1]], |
| cm->allow_high_precision_mv, bsize, mi_col, |
| mi_row, cm->cur_frame_force_integer_mv) |
| .as_int; |
| break; |
| } |
| default: { return 0; } |
| } |
| return ret; |
| } |
| |
| static int read_is_inter_block(AV1_COMMON *const cm, MACROBLOCKD *const xd, |
| int segment_id, aom_reader *r) { |
| if (segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { |
| const int frame = get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME); |
| RefBuffer *ref_buf = &cm->frame_refs[frame - LAST_FRAME]; |
| return frame != INTRA_FRAME && av1_is_valid_scale(&ref_buf->sf); |
| } |
| if (segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP) || |
| segfeature_active(&cm->seg, segment_id, SEG_LVL_GLOBALMV)) { |
| if (!av1_is_valid_scale(&cm->frame_refs[0].sf)) return 0; |
| } |
| const int ctx = av1_get_intra_inter_context(xd); |
| FRAME_CONTEXT *ec_ctx = xd->tile_ctx; |
| const int is_inter = |
| aom_read_symbol(r, ec_ctx->intra_inter_cdf[ctx], 2, ACCT_STR); |
| return is_inter; |
| } |
| |
| #if DEC_MISMATCH_DEBUG |
| static void dec_dump_logs(AV1_COMMON *cm, MB_MODE_INFO *const mbmi, int mi_row, |
| int mi_col, int16_t mode_ctx) { |
| int_mv mv[2] = { { 0 } }; |
| for (int ref = 0; ref < 1 + has_second_ref(mbmi); ++ref) |
| mv[ref].as_mv = mbmi->mv[ref].as_mv; |
| |
| const int16_t newmv_ctx = mode_ctx & NEWMV_CTX_MASK; |
| int16_t zeromv_ctx = -1; |
| int16_t refmv_ctx = -1; |
| if (mbmi->mode != NEWMV) { |
| zeromv_ctx = (mode_ctx >> GLOBALMV_OFFSET) & GLOBALMV_CTX_MASK; |
| if (mbmi->mode != GLOBALMV) |
| refmv_ctx = (mode_ctx >> REFMV_OFFSET) & REFMV_CTX_MASK; |
| } |
| |
| #define FRAME_TO_CHECK 11 |
| if (cm->current_video_frame == FRAME_TO_CHECK && cm->show_frame == 1) { |
| printf( |
| "=== DECODER ===: " |
| "Frame=%d, (mi_row,mi_col)=(%d,%d), skip_mode=%d, mode=%d, bsize=%d, " |
| "show_frame=%d, mv[0]=(%d,%d), mv[1]=(%d,%d), ref[0]=%d, " |
| "ref[1]=%d, motion_mode=%d, mode_ctx=%d, " |
| "newmv_ctx=%d, zeromv_ctx=%d, refmv_ctx=%d, tx_size=%d\n", |
| cm->current_video_frame, mi_row, mi_col, mbmi->skip_mode, mbmi->mode, |
| mbmi->sb_type, cm->show_frame, mv[0].as_mv.row, mv[0].as_mv.col, |
| mv[1].as_mv.row, mv[1].as_mv.col, mbmi->ref_frame[0], |
| mbmi->ref_frame[1], mbmi->motion_mode, mode_ctx, newmv_ctx, zeromv_ctx, |
| refmv_ctx, mbmi->tx_size); |
| } |
| } |
| #endif // DEC_MISMATCH_DEBUG |
| |
| static void read_inter_block_mode_info(AV1Decoder *const pbi, |
| MACROBLOCKD *const xd, |
| MB_MODE_INFO *const mbmi, int mi_row, |
| int mi_col, aom_reader *r) { |
| AV1_COMMON *const cm = &pbi->common; |
| const BLOCK_SIZE bsize = mbmi->sb_type; |
| const int allow_hp = cm->allow_high_precision_mv; |
| int_mv nearestmv[2], nearmv[2]; |
| int_mv ref_mvs[MODE_CTX_REF_FRAMES][MAX_MV_REF_CANDIDATES] = { { { 0 } } }; |
| int16_t inter_mode_ctx[MODE_CTX_REF_FRAMES]; |
| int pts[SAMPLES_ARRAY_SIZE], pts_inref[SAMPLES_ARRAY_SIZE]; |
| FRAME_CONTEXT *ec_ctx = xd->tile_ctx; |
| |
| mbmi->uv_mode = UV_DC_PRED; |
| mbmi->palette_mode_info.palette_size[0] = 0; |
| mbmi->palette_mode_info.palette_size[1] = 0; |
| |
| av1_collect_neighbors_ref_counts(xd); |
| |
| read_ref_frames(cm, xd, r, mbmi->segment_id, mbmi->ref_frame); |
| const int is_compound = has_second_ref(mbmi); |
| |
| MV_REFERENCE_FRAME ref_frame = av1_ref_frame_type(mbmi->ref_frame); |
| av1_find_mv_refs(cm, xd, mbmi, ref_frame, xd->ref_mv_count, xd->ref_mv_stack, |
| ref_mvs, mi_row, mi_col, inter_mode_ctx); |
| |
| int mode_ctx = av1_mode_context_analyzer(inter_mode_ctx, mbmi->ref_frame); |
| mbmi->ref_mv_idx = 0; |
| |
| if (mbmi->skip_mode) { |
| assert(is_compound); |
| mbmi->mode = NEAREST_NEARESTMV; |
| } else { |
| if (segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP) || |
| segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_GLOBALMV)) { |
| mbmi->mode = GLOBALMV; |
| } else { |
| if (is_compound) |
| mbmi->mode = read_inter_compound_mode(xd, r, mode_ctx); |
| else |
| mbmi->mode = read_inter_mode(ec_ctx, r, mode_ctx); |
| if (mbmi->mode == NEWMV || mbmi->mode == NEW_NEWMV || |
| have_nearmv_in_inter_mode(mbmi->mode)) |
| read_drl_idx(ec_ctx, xd, mbmi, r); |
| } |
| } |
| |
| if (is_compound != is_inter_compound_mode(mbmi->mode)) { |
| aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME, |
| "Prediction mode %d invalid with ref frame %d %d", |
| mbmi->mode, mbmi->ref_frame[0], mbmi->ref_frame[1]); |
| } |
| |
| if (!is_compound && mbmi->mode != GLOBALMV) { |
| av1_find_best_ref_mvs(allow_hp, ref_mvs[mbmi->ref_frame[0]], &nearestmv[0], |
| &nearmv[0], cm->cur_frame_force_integer_mv); |
| } |
| |
| if (is_compound && mbmi->mode != GLOBAL_GLOBALMV) { |
| int ref_mv_idx = mbmi->ref_mv_idx + 1; |
| nearestmv[0] = xd->ref_mv_stack[ref_frame][0].this_mv; |
| nearestmv[1] = xd->ref_mv_stack[ref_frame][0].comp_mv; |
| nearmv[0] = xd->ref_mv_stack[ref_frame][ref_mv_idx].this_mv; |
| nearmv[1] = xd->ref_mv_stack[ref_frame][ref_mv_idx].comp_mv; |
| lower_mv_precision(&nearestmv[0].as_mv, allow_hp, |
| cm->cur_frame_force_integer_mv); |
| lower_mv_precision(&nearestmv[1].as_mv, allow_hp, |
| cm->cur_frame_force_integer_mv); |
| lower_mv_precision(&nearmv[0].as_mv, allow_hp, |
| cm->cur_frame_force_integer_mv); |
| lower_mv_precision(&nearmv[1].as_mv, allow_hp, |
| cm->cur_frame_force_integer_mv); |
| } else if (mbmi->ref_mv_idx > 0 && mbmi->mode == NEARMV) { |
| int_mv cur_mv = |
| xd->ref_mv_stack[mbmi->ref_frame[0]][1 + mbmi->ref_mv_idx].this_mv; |
| nearmv[0] = cur_mv; |
| } |
| |
| int_mv ref_mv[2]; |
| ref_mv[0] = nearestmv[0]; |
| ref_mv[1] = nearestmv[1]; |
| |
| if (is_compound) { |
| int ref_mv_idx = mbmi->ref_mv_idx; |
| // Special case: NEAR_NEWMV and NEW_NEARMV modes use |
| // 1 + mbmi->ref_mv_idx (like NEARMV) instead of |
| // mbmi->ref_mv_idx (like NEWMV) |
| if (mbmi->mode == NEAR_NEWMV || mbmi->mode == NEW_NEARMV) |
| ref_mv_idx = 1 + mbmi->ref_mv_idx; |
| |
| // TODO(jingning, yunqing): Do we need a lower_mv_precision() call here? |
| if (compound_ref0_mode(mbmi->mode) == NEWMV) |
| ref_mv[0] = xd->ref_mv_stack[ref_frame][ref_mv_idx].this_mv; |
| |
| if (compound_ref1_mode(mbmi->mode) == NEWMV) |
| ref_mv[1] = xd->ref_mv_stack[ref_frame][ref_mv_idx].comp_mv; |
| } else { |
| if (mbmi->mode == NEWMV) { |
| if (xd->ref_mv_count[ref_frame] > 1) |
| ref_mv[0] = xd->ref_mv_stack[ref_frame][mbmi->ref_mv_idx].this_mv; |
| } |
| } |
| |
| if (mbmi->skip_mode) { |
| assert(mbmi->mode == NEAREST_NEARESTMV); |
| mbmi->mv[0].as_int = nearestmv[0].as_int; |
| mbmi->mv[1].as_int = nearestmv[1].as_int; |
| } else { |
| int mv_corrupted_flag = |
| !assign_mv(cm, xd, mbmi->mode, mbmi->ref_frame, mbmi->mv, ref_mv, |
| nearestmv, nearmv, mi_row, mi_col, is_compound, allow_hp, r); |
| aom_merge_corrupted_flag(&xd->corrupted, mv_corrupted_flag); |
| } |
| |
| mbmi->use_wedge_interintra = 0; |
| if (cm->seq_params.enable_interintra_compound && !mbmi->skip_mode && |
| is_interintra_allowed(mbmi)) { |
| const int bsize_group = size_group_lookup[bsize]; |
| const int interintra = |
| aom_read_symbol(r, ec_ctx->interintra_cdf[bsize_group], 2, ACCT_STR); |
| assert(mbmi->ref_frame[1] == NONE_FRAME); |
| if (interintra) { |
| const INTERINTRA_MODE interintra_mode = |
| read_interintra_mode(xd, r, bsize_group); |
| mbmi->ref_frame[1] = INTRA_FRAME; |
| mbmi->interintra_mode = interintra_mode; |
| mbmi->angle_delta[PLANE_TYPE_Y] = 0; |
| mbmi->angle_delta[PLANE_TYPE_UV] = 0; |
| mbmi->filter_intra_mode_info.use_filter_intra = 0; |
| if (is_interintra_wedge_used(bsize)) { |
| mbmi->use_wedge_interintra = aom_read_symbol( |
| r, ec_ctx->wedge_interintra_cdf[bsize], 2, ACCT_STR); |
| if (mbmi->use_wedge_interintra) { |
| mbmi->interintra_wedge_index = |
| aom_read_symbol(r, ec_ctx->wedge_idx_cdf[bsize], 16, ACCT_STR); |
| mbmi->interintra_wedge_sign = 0; |
| } |
| } |
| } |
| } |
| |
| for (int ref = 0; ref < 1 + has_second_ref(mbmi); ++ref) { |
| const MV_REFERENCE_FRAME frame = mbmi->ref_frame[ref]; |
| RefBuffer *ref_buf = &cm->frame_refs[frame - LAST_FRAME]; |
| |
| xd->block_refs[ref] = ref_buf; |
| } |
| |
| mbmi->motion_mode = SIMPLE_TRANSLATION; |
| if (mbmi->sb_type >= BLOCK_8X8 && !mbmi->skip_mode && !has_second_ref(mbmi)) |
| mbmi->num_proj_ref[0] = findSamples(cm, xd, mi_row, mi_col, pts, pts_inref); |
| av1_count_overlappable_neighbors(cm, xd, mi_row, mi_col); |
| |
| if (mbmi->ref_frame[1] != INTRA_FRAME) |
| mbmi->motion_mode = read_motion_mode(cm, xd, mbmi, r); |
| |
| // init |
| mbmi->comp_group_idx = 0; |
| mbmi->compound_idx = 1; |
| mbmi->interinter_compound_type = COMPOUND_AVERAGE; |
| |
| if (has_second_ref(mbmi) && !mbmi->skip_mode) { |
| // Read idx to indicate current compound inter prediction mode group |
| const int masked_compound_used = is_any_masked_compound_used(bsize) && |
| cm->seq_params.enable_masked_compound; |
| |
| if (masked_compound_used) { |
| const int ctx_comp_group_idx = get_comp_group_idx_context(xd); |
| mbmi->comp_group_idx = aom_read_symbol( |
| r, ec_ctx->comp_group_idx_cdf[ctx_comp_group_idx], 2, ACCT_STR); |
| } |
| |
| if (mbmi->comp_group_idx == 0) { |
| if (cm->seq_params.enable_jnt_comp) { |
| const int comp_index_ctx = get_comp_index_context(cm, xd); |
| mbmi->compound_idx = aom_read_symbol( |
| r, ec_ctx->compound_index_cdf[comp_index_ctx], 2, ACCT_STR); |
| } else { |
| // Distance-weighted compound is disabled, so always use average |
| mbmi->compound_idx = 1; |
| } |
| } else { |
| assert(cm->reference_mode != SINGLE_REFERENCE && |
| is_inter_compound_mode(mbmi->mode) && |
| mbmi->motion_mode == SIMPLE_TRANSLATION); |
| assert(masked_compound_used); |
| |
| // compound_diffwtd, wedge |
| if (is_interinter_compound_used(COMPOUND_WEDGE, bsize)) |
| mbmi->interinter_compound_type = |
| 1 + aom_read_symbol(r, ec_ctx->compound_type_cdf[bsize], |
| COMPOUND_TYPES - 1, ACCT_STR); |
| else |
| mbmi->interinter_compound_type = COMPOUND_DIFFWTD; |
| |
| if (mbmi->interinter_compound_type == COMPOUND_WEDGE) { |
| assert(is_interinter_compound_used(COMPOUND_WEDGE, bsize)); |
| mbmi->wedge_index = |
| aom_read_symbol(r, ec_ctx->wedge_idx_cdf[bsize], 16, ACCT_STR); |
| mbmi->wedge_sign = aom_read_bit(r, ACCT_STR); |
| } else { |
| assert(mbmi->interinter_compound_type == COMPOUND_DIFFWTD); |
| mbmi->mask_type = aom_read_literal(r, MAX_DIFFWTD_MASK_BITS, ACCT_STR); |
| } |
| } |
| } |
| |
| read_mb_interp_filter(cm, xd, mbmi, r); |
| |
| if (mbmi->motion_mode == WARPED_CAUSAL) { |
| mbmi->wm_params[0].wmtype = DEFAULT_WMTYPE; |
| mbmi->wm_params[0].invalid = 0; |
| |
| if (mbmi->num_proj_ref[0] > 1) |
| mbmi->num_proj_ref[0] = selectSamples(&mbmi->mv[0].as_mv, pts, pts_inref, |
| mbmi->num_proj_ref[0], bsize); |
| |
| if (find_projection(mbmi->num_proj_ref[0], pts, pts_inref, bsize, |
| mbmi->mv[0].as_mv.row, mbmi->mv[0].as_mv.col, |
| &mbmi->wm_params[0], mi_row, mi_col)) { |
| #if WARPED_MOTION_DEBUG |
| printf("Warning: unexpected warped model from aomenc\n"); |
| #endif |
| mbmi->wm_params[0].invalid = 1; |
| } |
| } |
| |
| #if DEC_MISMATCH_DEBUG |
| dec_dump_logs(cm, mi, mi_row, mi_col, mode_ctx); |
| #endif // DEC_MISMATCH_DEBUG |
| } |
| |
| static void read_inter_frame_mode_info(AV1Decoder *const pbi, |
| MACROBLOCKD *const xd, int mi_row, |
| int mi_col, aom_reader *r) { |
| AV1_COMMON *const cm = &pbi->common; |
| MB_MODE_INFO *const mbmi = xd->mi[0]; |
| int inter_block = 1; |
| |
| mbmi->mv[0].as_int = 0; |
| mbmi->mv[1].as_int = 0; |
| mbmi->segment_id = read_inter_segment_id(cm, xd, mi_row, mi_col, 1, r); |
| |
| mbmi->skip_mode = read_skip_mode(cm, xd, mbmi->segment_id, r); |
| |
| if (mbmi->skip_mode) |
| mbmi->skip = 1; |
| else |
| mbmi->skip = read_skip(cm, xd, mbmi->segment_id, r); |
| |
| mbmi->segment_id = read_inter_segment_id(cm, xd, mi_row, mi_col, 0, r); |
| |
| read_cdef(cm, r, mbmi, mi_col, mi_row); |
| |
| if (cm->delta_q_present_flag) { |
| xd->current_qindex = |
| xd->prev_qindex + |
| read_delta_qindex(cm, xd, r, mbmi, mi_col, mi_row) * cm->delta_q_res; |
| /* Normative: Clamp to [1,MAXQ] to not interfere with lossless mode */ |
| xd->current_qindex = clamp(xd->current_qindex, 1, MAXQ); |
| xd->prev_qindex = xd->current_qindex; |
| if (cm->delta_lf_present_flag) { |
| if (cm->delta_lf_multi) { |
| const int frame_lf_count = |
| av1_num_planes(cm) > 1 ? FRAME_LF_COUNT : FRAME_LF_COUNT - 2; |
| for (int lf_id = 0; lf_id < frame_lf_count; ++lf_id) { |
| const int tmp_lvl = |
| xd->prev_delta_lf[lf_id] + |
| read_delta_lflevel(cm, xd, r, lf_id, mbmi, mi_col, mi_row) * |
| cm->delta_lf_res; |
| mbmi->curr_delta_lf[lf_id] = xd->curr_delta_lf[lf_id] = |
| clamp(tmp_lvl, -MAX_LOOP_FILTER, MAX_LOOP_FILTER); |
| xd->prev_delta_lf[lf_id] = xd->curr_delta_lf[lf_id]; |
| } |
| } else { |
| const int tmp_lvl = |
| xd->prev_delta_lf_from_base + |
| read_delta_lflevel(cm, xd, r, -1, mbmi, mi_col, mi_row) * |
| cm->delta_lf_res; |
| mbmi->current_delta_lf_from_base = xd->current_delta_lf_from_base = |
| clamp(tmp_lvl, -MAX_LOOP_FILTER, MAX_LOOP_FILTER); |
| xd->prev_delta_lf_from_base = xd->current_delta_lf_from_base; |
| } |
| } |
| } |
| |
| if (!mbmi->skip_mode) |
| inter_block = read_is_inter_block(cm, xd, mbmi->segment_id, r); |
| |
| mbmi->current_q_index = xd->current_qindex; |
| |
| xd->above_txfm_context = |
| cm->above_txfm_context + (mi_col << TX_UNIT_WIDE_LOG2); |
| xd->left_txfm_context = xd->left_txfm_context_buffer + |
| ((mi_row & MAX_MIB_MASK) << TX_UNIT_HIGH_LOG2); |
| |
| if (inter_block) |
| read_inter_block_mode_info(pbi, xd, mbmi, mi_row, mi_col, r); |
| else |
| read_intra_block_mode_info(cm, mi_row, mi_col, xd, mbmi, r); |
| } |
| |
| static void intra_copy_frame_mvs(AV1_COMMON *const cm, int mi_row, int mi_col, |
| int x_mis, int y_mis) { |
| const int frame_mvs_stride = ROUND_POWER_OF_TWO(cm->mi_cols, 1); |
| MV_REF *frame_mvs = |
| cm->cur_frame->mvs + (mi_row >> 1) * frame_mvs_stride + (mi_col >> 1); |
| x_mis = ROUND_POWER_OF_TWO(x_mis, 1); |
| y_mis = ROUND_POWER_OF_TWO(y_mis, 1); |
| |
| for (int h = 0; h < y_mis; h++) { |
| MV_REF *mv = frame_mvs; |
| for (int w = 0; w < x_mis; w++) { |
| mv->ref_frame[0] = NONE_FRAME; |
| mv->ref_frame[1] = NONE_FRAME; |
| mv++; |
| } |
| frame_mvs += frame_mvs_stride; |
| } |
| } |
| |
| void av1_read_mode_info(AV1Decoder *const pbi, MACROBLOCKD *xd, int mi_row, |
| int mi_col, aom_reader *r, int x_mis, int y_mis) { |
| AV1_COMMON *const cm = &pbi->common; |
| MB_MODE_INFO *const mi = xd->mi[0]; |
| mi->use_intrabc = 0; |
| |
| if (frame_is_intra_only(cm)) { |
| read_intra_frame_mode_info(cm, xd, mi_row, mi_col, r); |
| intra_copy_frame_mvs(cm, mi_row, mi_col, x_mis, y_mis); |
| } else { |
| read_inter_frame_mode_info(pbi, xd, mi_row, mi_col, r); |
| av1_copy_frame_mvs(cm, mi, mi_row, mi_col, x_mis, y_mis); |
| } |
| } |
