diff options
Diffstat (limited to 'third_party/aom/av1/decoder/decodemv.c')
| -rw-r--r-- | third_party/aom/av1/decoder/decodemv.c | 1560 |
1 files changed, 0 insertions, 1560 deletions
diff --git a/third_party/aom/av1/decoder/decodemv.c b/third_party/aom/av1/decoder/decodemv.c deleted file mode 100644 index 551e4d543..000000000 --- a/third_party/aom/av1/decoder/decodemv.c +++ /dev/null @@ -1,1560 +0,0 @@ -/* - * 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, MACROBLOCKD *const xd, - int mi_col, int mi_row) { - MB_MODE_INFO *const mbmi = xd->mi[0]; - if (cm->coded_lossless) return; - if (cm->allow_intrabc) { - 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? - xd->cdef_preset[0] = xd->cdef_preset[1] = xd->cdef_preset[2] = - xd->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 = xd->cdef_preset[index] = - xd->cdef_preset[index] == -1 && !mbmi->skip - ? aom_read_literal(r, cm->cdef_bits, ACCT_STR) - : xd->cdef_preset[index]; -} - -static int read_delta_qindex(AV1_COMMON *cm, const 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(const AV1_COMMON *const cm, aom_reader *r, - aom_cdf_prob *const cdf, - const MB_MODE_INFO *const mbmi, int mi_col, - int mi_row) { - int reduced_delta_lflevel = 0; - const 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); - - if ((bsize != cm->seq_params.sb_size || mbmi->skip == 0) && - read_delta_lf_flag) { - int abs = aom_read_symbol(r, 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; - } - const int sign = abs ? aom_read_bit(r, ACCT_STR) : 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, const MACROBLOCKD *const xd, - int mi_row, int mi_col, aom_reader *r, int skip) { - int cdf_num; - const int pred = av1_get_spatial_seg_pred(cm, xd, mi_row, mi_col, &cdf_num); - if (skip) return pred; - - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - struct segmentation *const seg = &cm->seg; - struct segmentation_probs *const segp = &ec_ctx->seg; - aom_cdf_prob *pred_cdf = segp->spatial_pred_seg_cdf[cdf_num]; - const int coded_id = aom_read_symbol(r, pred_cdf, MAX_SEGMENTS, 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(xd->error_info, 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, - const MACROBLOCKD *const xd, int mi_row, - int mi_col, int bsize, aom_reader *r, - int skip) { - struct segmentation *const seg = &cm->seg; - if (!seg->enabled) return 0; // Default for disabled segmentation - - assert(seg->update_map && !seg->temporal_update); - - 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); - 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; - MB_MODE_INFO *const mbmi = xd->mi[0]; - 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); - } - - int segment_id; - if (preskip) { - if (!seg->segid_preskip) return 0; - } else { - if (seg->segid_preskip) 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; - } - } - - if (seg->temporal_update) { - const int ctx = av1_get_pred_context_seg_id(xd); - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - struct segmentation_probs *const segp = &ec_ctx->seg; - 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; - - if (segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME) || - segfeature_active(&cm->seg, segment_id, SEG_LVL_GLOBALMV)) { - // These features imply single-reference mode, while skip mode implies - // compound reference. Hence, the two are mutually exclusive. - // In other words, skip_mode is implicitly 0 here. - 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->seq_params.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->seq_params.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, TX_SIZE tx_size, aom_reader *r) { - MB_MODE_INFO *mbmi = xd->mi[0]; - 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]; - *tx_type = DCT_DCT; - - // No need to read transform type if block is skipped. - if (mbmi->skip || segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) - return; - - // No need to read transform type for lossless mode(qindex==0). - const int qindex = - cm->seg.enabled ? xd->qindex[mbmi->segment_id] : cm->base_qindex; - if (qindex <= 0) return; - - const int inter_block = is_inter_block(mbmi); - if (get_ext_tx_types(tx_size, inter_block, cm->reduced_tx_set_used) > 1) { - const TxSetType tx_set_type = - av1_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); - - const TX_SIZE square_tx_size = txsize_sqr_map[tx_size]; - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - 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 { - const PREDICTION_MODE intra_mode = - mbmi->filter_intra_mode_info.use_filter_intra - ? fimode_to_intradir[mbmi->filter_intra_mode_info - .filter_intra_mode] - : 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_mode], - av1_num_ext_tx_set[tx_set_type], ACCT_STR)]; - } - } -} - -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, cm, xd, 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]; - int_mv global_mvs[REF_FRAMES]; - - av1_find_mv_refs(cm, xd, mbmi, INTRA_FRAME, xd->ref_mv_count, - xd->ref_mv_stack, ref_mvs, global_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); - } - } -} - -// If delta q is present, reads delta_q index. -// Also reads delta_q loop filter levels, if present. -static void read_delta_q_params(AV1_COMMON *const cm, MACROBLOCKD *const xd, - const int mi_row, const int mi_col, - aom_reader *r) { - if (cm->delta_q_present_flag) { - MB_MODE_INFO *const mbmi = xd->mi[0]; - xd->current_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); - FRAME_CONTEXT *const ec_ctx = xd->tile_ctx; - 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->delta_lf[lf_id] + - read_delta_lflevel(cm, r, ec_ctx->delta_lf_multi_cdf[lf_id], mbmi, - mi_col, mi_row) * - cm->delta_lf_res; - mbmi->delta_lf[lf_id] = xd->delta_lf[lf_id] = - clamp(tmp_lvl, -MAX_LOOP_FILTER, MAX_LOOP_FILTER); - } - } else { - const int tmp_lvl = xd->delta_lf_from_base + - read_delta_lflevel(cm, r, ec_ctx->delta_lf_cdf, - mbmi, mi_col, mi_row) * - cm->delta_lf_res; - mbmi->delta_lf_from_base = xd->delta_lf_from_base = - clamp(tmp_lvl, -MAX_LOOP_FILTER, MAX_LOOP_FILTER); - } - } - } -} - -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->segid_preskip) - 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->segid_preskip) - mbmi->segment_id = - read_intra_segment_id(cm, xd, mi_row, mi_col, bsize, r, mbmi->skip); - - read_cdef(cm, r, xd, mi_col, mi_row); - - read_delta_q_params(cm, xd, mi_row, mi_col, r); - - mbmi->current_qindex = 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[xd->tile.tile_row] + mi_col; - xd->left_txfm_context = - xd->left_txfm_context_buffer + (mi_row & MAX_MIB_MASK); - - 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); - } - 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 = store_cfl_required(cm, xd); - - 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 = kZeroMv; - 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; - const int has_chroma = - is_chroma_reference(mi_row, mi_col, bsize, xd->plane[1].subsampling_x, - xd->plane[1].subsampling_y); - xd->cfl.is_chroma_reference = has_chroma; - if (!cm->seq_params.monochrome && has_chroma) { - 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); - } - 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.store_y = store_cfl_required(cm, xd); - - 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) { - FRAME_CONTEXT *ec_ctx = xd->tile_ctx; - MB_MODE_INFO *mbmi = xd->mi[0]; - BLOCK_SIZE bsize = mbmi->sb_type; - if (cm->cur_frame_force_integer_mv) { - allow_hp = MV_SUBPEL_NONE; - } - switch (mode) { - case NEWMV: { - nmv_context *const nmvc = &ec_ctx->nmvc; - read_mv(r, &mv[0].as_mv, &ref_mv[0].as_mv, nmvc, allow_hp); - break; - } - case NEARESTMV: { - mv[0].as_int = nearest_mv[0].as_int; - break; - } - case NEARMV: { - mv[0].as_int = near_mv[0].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; - 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); - } - 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); - 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); - 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); - 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); - 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; } - } - - int ret = is_mv_valid(&mv[0].as_mv); - if (is_compound) { - ret = ret && is_mv_valid(&mv[1].as_mv); - } - 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); - if (frame < LAST_FRAME) return 0; - return frame != INTRA_FRAME; - } - if (segfeature_active(&cm->seg, segment_id, SEG_LVL_GLOBALMV)) { - return 1; - } - 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); - int_mv global_mvs[REF_FRAMES]; - av1_find_mv_refs(cm, xd, mbmi, ref_frame, xd->ref_mv_count, xd->ref_mv_stack, - ref_mvs, global_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(xd->error_info, 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 (is_motion_variation_allowed_bsize(mbmi->sb_type) && !mbmi->skip_mode && - !has_second_ref(mbmi)) - mbmi->num_proj_ref = 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_comp.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_comp.type = - 1 + aom_read_symbol(r, ec_ctx->compound_type_cdf[bsize], - COMPOUND_TYPES - 1, ACCT_STR); - else - mbmi->interinter_comp.type = COMPOUND_DIFFWTD; - - if (mbmi->interinter_comp.type == COMPOUND_WEDGE) { - assert(is_interinter_compound_used(COMPOUND_WEDGE, bsize)); - mbmi->interinter_comp.wedge_index = - aom_read_symbol(r, ec_ctx->wedge_idx_cdf[bsize], 16, ACCT_STR); - mbmi->interinter_comp.wedge_sign = aom_read_bit(r, ACCT_STR); - } else { - assert(mbmi->interinter_comp.type == COMPOUND_DIFFWTD); - mbmi->interinter_comp.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.wmtype = DEFAULT_WMTYPE; - mbmi->wm_params.invalid = 0; - - if (mbmi->num_proj_ref > 1) - mbmi->num_proj_ref = selectSamples(&mbmi->mv[0].as_mv, pts, pts_inref, - mbmi->num_proj_ref, bsize); - - if (find_projection(mbmi->num_proj_ref, pts, pts_inref, bsize, - mbmi->mv[0].as_mv.row, mbmi->mv[0].as_mv.col, - &mbmi->wm_params, mi_row, mi_col)) { -#if WARPED_MOTION_DEBUG - printf("Warning: unexpected warped model from aomenc\n"); -#endif - mbmi->wm_params.invalid = 1; - } - } - - xd->cfl.is_chroma_reference = - is_chroma_reference(mi_row, mi_col, bsize, cm->seq_params.subsampling_x, - cm->seq_params.subsampling_y); - xd->cfl.store_y = store_cfl_required(cm, xd); - -#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, xd, mi_col, mi_row); - - read_delta_q_params(cm, xd, mi_row, mi_col, r); - - if (!mbmi->skip_mode) - inter_block = read_is_inter_block(cm, xd, mbmi->segment_id, r); - - mbmi->current_qindex = xd->current_qindex; - - xd->above_txfm_context = cm->above_txfm_context[xd->tile.tile_row] + mi_col; - xd->left_txfm_context = - xd->left_txfm_context_buffer + (mi_row & MAX_MIB_MASK); - - 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 = 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); - } -} |