| /* |
| * Copyright (c) 2021, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 3-Clause Clear License |
| * and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear |
| * License was not distributed with this source code in the LICENSE file, you |
| * can obtain it at aomedia.org/license/software-license/bsd-3-c-c/. 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 |
| * aomedia.org/license/patent-license/. |
| */ |
| |
| #include <math.h> |
| |
| #include "av1/common/common.h" |
| #include "av1/common/entropymode.h" |
| |
| #include "av1/common/cost.h" |
| #include "av1/encoder/encodemv.h" |
| |
| #include "aom_dsp/aom_dsp_common.h" |
| #include "aom_ports/bitops.h" |
| #include "av1/common/reconinter.h" |
| #include "aom_dsp/binary_codes_writer.h" |
| |
| static void update_truncated_unary(nmv_context *mvctx, |
| const int max_coded_value, int coded_value, |
| int num_of_ctx, int is_low_class) { |
| (void)is_low_class; |
| |
| (void)max_coded_value; |
| (void)num_of_ctx; |
| int bit_idx = 0; |
| aom_cdf_prob *cdf = mvctx->shell_offset_class2_cdf; |
| |
| update_cdf(cdf, coded_value != bit_idx, 2); |
| } |
| static void update_tu_quasi_uniform(nmv_context *mvctx, |
| const int max_coded_value, int col, |
| int max_trunc_unary_value) { |
| int max_idx_bits = AOMMIN(max_coded_value, max_trunc_unary_value); |
| const int coded_col = |
| col > max_trunc_unary_value ? max_trunc_unary_value : col; |
| int max_num_of_ctx = NUM_CTX_COL_MV_GTX; |
| for (int bit_idx = 0; bit_idx < max_idx_bits; ++bit_idx) { |
| int context_index = |
| (bit_idx < max_num_of_ctx ? bit_idx : max_num_of_ctx - 1); |
| assert(context_index < max_num_of_ctx); |
| update_cdf(mvctx->col_mv_greater_flags_cdf[context_index], |
| coded_col != bit_idx, 2); |
| |
| if (coded_col == bit_idx) break; |
| } |
| } |
| static void write_truncated_unary(aom_writer *w, nmv_context *mvctx, |
| const int max_coded_value, int coded_value, |
| int num_of_ctx, int is_low_class) { |
| (void)is_low_class; |
| (void)num_of_ctx; |
| |
| int max_idx_bits = max_coded_value; |
| for (int bit_idx = 0; bit_idx < max_idx_bits; ++bit_idx) { |
| aom_cdf_prob *cdf = mvctx->shell_offset_class2_cdf; |
| if (bit_idx) |
| aom_write_literal(w, coded_value != bit_idx, 1); |
| else |
| aom_write_symbol(w, coded_value != bit_idx, cdf, 2); |
| if (coded_value == bit_idx) break; |
| } |
| } |
| static void write_tu_quasi_uniform(aom_writer *w, nmv_context *mvctx, |
| const int max_coded_value, int col, |
| int max_trunc_unary_value) { |
| int max_idx_bits = AOMMIN(max_coded_value, max_trunc_unary_value); |
| const int coded_col = |
| col > max_trunc_unary_value ? max_trunc_unary_value : col; |
| int max_num_of_ctx = NUM_CTX_COL_MV_GTX; |
| |
| for (int bit_idx = 0; bit_idx < max_idx_bits; ++bit_idx) { |
| int context_index = |
| (bit_idx < max_num_of_ctx ? bit_idx : max_num_of_ctx - 1); |
| assert(context_index < max_num_of_ctx); |
| aom_write_symbol(w, coded_col != bit_idx, |
| mvctx->col_mv_greater_flags_cdf[context_index], 2); |
| if (coded_col == bit_idx) break; |
| } |
| if (max_coded_value > max_trunc_unary_value && col >= max_trunc_unary_value) { |
| int remainder = col - max_trunc_unary_value; |
| int remainder_max_value = max_coded_value - max_trunc_unary_value; |
| aom_write_primitive_quniform(w, remainder_max_value + 1, remainder); |
| } |
| } |
| |
| static void av1_encode_vq_amvd(AV1_COMP *cpi, MV mv, aom_writer *w, |
| nmv_context *mvctx, const MV mv_diff) { |
| const MV_JOINT_TYPE j = av1_get_mv_joint(&mv_diff); |
| assert(j < MV_JOINTS - 1); |
| aom_write_symbol(w, j, mvctx->amvd_joints_cdf, MV_JOINTS); |
| |
| const MV mv_diff_index = { get_index_from_amvd_mvd(mv_diff.row), |
| get_index_from_amvd_mvd(mv_diff.col) }; |
| |
| int code_row = mv_joint_vertical(j); |
| int code_col = mv_joint_horizontal(j); |
| |
| if (code_row) { |
| const int sign = mv_diff_index.row < 0; |
| const int mag = sign ? -mv_diff_index.row : mv_diff_index.row; |
| assert(mag <= MAX_AMVD_INDEX); |
| assert(mag > 0); |
| assert(mv_diff.row == get_mvd_from_amvd_index(mv_diff_index.row)); |
| aom_write_symbol(w, mag - 1, mvctx->comps[0].amvd_indices_cdf, |
| MAX_AMVD_INDEX); |
| } |
| |
| if (code_col) { |
| const int sign = mv_diff_index.col < 0; |
| const int mag = sign ? -mv_diff_index.col : mv_diff_index.col; |
| assert(mag <= MAX_AMVD_INDEX); |
| assert(mag > 0); |
| assert(mv_diff.col == get_mvd_from_amvd_index(mv_diff_index.col)); |
| aom_write_symbol(w, mag - 1, mvctx->comps[1].amvd_indices_cdf, |
| MAX_AMVD_INDEX); |
| } |
| |
| // If auto_mv_step_size is enabled then keep track of the largest |
| // motion vector component used. |
| if (cpi && cpi->sf.mv_sf.auto_mv_step_size) { |
| int maxv = AOMMAX(abs(mv.row), abs(mv.col)) >> 3; |
| cpi->mv_search_params.max_mv_magnitude = |
| AOMMAX(maxv, cpi->mv_search_params.max_mv_magnitude); |
| } |
| } |
| static void av1_update_vq_amvd(nmv_context *mvctx, const MV mv_diff) { |
| const MV_JOINT_TYPE j = av1_get_mv_joint(&mv_diff); |
| assert(j < MV_JOINTS - 1); |
| update_cdf(mvctx->amvd_joints_cdf, j, MV_JOINTS); |
| |
| const MV mv_diff_index = { get_index_from_amvd_mvd(mv_diff.row), |
| get_index_from_amvd_mvd(mv_diff.col) }; |
| |
| int code_row = mv_joint_vertical(j); |
| int code_col = mv_joint_horizontal(j); |
| |
| if (code_row) { |
| const int sign = mv_diff_index.row < 0; |
| const int mag = sign ? -mv_diff_index.row : mv_diff_index.row; |
| assert(mag <= MAX_AMVD_INDEX); |
| assert(mag > 0); |
| assert(mv_diff.row == get_mvd_from_amvd_index(mv_diff_index.row)); |
| update_cdf(mvctx->comps[0].amvd_indices_cdf, mag - 1, MAX_AMVD_INDEX); |
| } |
| |
| if (code_col) { |
| const int sign = mv_diff_index.col < 0; |
| const int mag = sign ? -mv_diff_index.col : mv_diff_index.col; |
| assert(mag <= MAX_AMVD_INDEX); |
| assert(mag > 0); |
| assert(mv_diff.col == get_mvd_from_amvd_index(mv_diff_index.col)); |
| update_cdf(mvctx->comps[1].amvd_indices_cdf, mag - 1, MAX_AMVD_INDEX); |
| } |
| } |
| |
| void av1_encode_mv(AV1_COMP *cpi, MV mv, aom_writer *w, nmv_context *mvctx, |
| const MV mv_diff, MvSubpelPrecision pb_mv_precision, |
| int is_adaptive_mvd) { |
| if (is_adaptive_mvd) { |
| av1_encode_vq_amvd(cpi, mv, w, mvctx, mv_diff); |
| return; |
| } |
| |
| int start_lsb = (MV_PRECISION_ONE_EIGHTH_PEL - pb_mv_precision); |
| const MV scaled_mv_diff = { abs(mv_diff.row) >> start_lsb, |
| abs(mv_diff.col) >> start_lsb }; |
| |
| int num_mv_class = get_default_num_shell_class(pb_mv_precision); |
| int shell_cls_offset; |
| const int shell_index = (scaled_mv_diff.row) + (scaled_mv_diff.col); |
| const int shell_class = |
| get_shell_class_with_precision(shell_index, &shell_cls_offset); |
| |
| // Encode int shell class |
| #if CONFIG_REDUCE_SYMBOL_SIZE |
| int num_mv_class_0, num_mv_class_1; |
| split_num_shell_class(num_mv_class, &num_mv_class_0, &num_mv_class_1); |
| if (shell_class < num_mv_class_0) { |
| aom_write_symbol(w, 0, mvctx->joint_shell_set_cdf, 2); |
| aom_write_symbol(w, shell_class, |
| mvctx->joint_shell_class_cdf_0[pb_mv_precision], |
| num_mv_class_0); |
| } else { |
| aom_write_symbol(w, 1, mvctx->joint_shell_set_cdf, 2); |
| #if CONFIG_MV_RANGE_EXTENSION |
| if (pb_mv_precision == MV_PRECISION_ONE_EIGHTH_PEL) { |
| const int map_shell_class = get_map_shell_class(shell_class); |
| aom_write_symbol(w, map_shell_class - num_mv_class_0, |
| mvctx->joint_shell_class_cdf_1[pb_mv_precision], |
| num_mv_class_1 - 1); |
| if (shell_class >= MAX_NUM_SHELL_CLASS - 2) { |
| aom_write_symbol(w, shell_class == MAX_NUM_SHELL_CLASS - 1, |
| mvctx->joint_shell_last_two_classes_cdf, 2); |
| } |
| } else { |
| #endif // CONFIG_MV_RANGE_EXTENSION |
| aom_write_symbol(w, shell_class - num_mv_class_0, |
| mvctx->joint_shell_class_cdf_1[pb_mv_precision], |
| num_mv_class_1); |
| #if CONFIG_MV_RANGE_EXTENSION |
| } |
| #endif // CONFIG_MV_RANGE_EXTENSION |
| } |
| #else |
| #if CONFIG_MV_RANGE_EXTENSION |
| if (pb_mv_precision == MV_PRECISION_ONE_EIGHTH_PEL) { |
| const int map_shell_class = get_map_shell_class(shell_class); |
| aom_write_symbol(w, map_shell_class, |
| mvctx->joint_shell_class_cdf[pb_mv_precision], |
| num_mv_class - 1); |
| if (shell_class >= MAX_NUM_SHELL_CLASS - 2) { |
| aom_write_symbol(w, shell_class == MAX_NUM_SHELL_CLASS - 1, |
| mvctx->joint_shell_last_two_classes_cdf, 2); |
| } |
| } else { |
| #endif // CONFIG_MV_RANGE_EXTENSION |
| aom_write_symbol(w, shell_class, |
| mvctx->joint_shell_class_cdf[pb_mv_precision], |
| num_mv_class); |
| #if CONFIG_MV_RANGE_EXTENSION |
| } |
| #endif // CONFIG_MV_RANGE_EXTENSION |
| #endif // CONFIG_REDUCE_SYMBOL_SIZE |
| |
| assert(shell_class >= 0 && shell_class < num_mv_class); |
| |
| if (shell_class < 2) { |
| assert(shell_cls_offset == 0 || shell_cls_offset == 1); |
| aom_write_symbol(w, shell_cls_offset, |
| mvctx->shell_offset_low_class_cdf[shell_class], 2); |
| } else if (shell_class == 2) { |
| int max_coded_value = 3; |
| int coded_value = shell_cls_offset; |
| write_truncated_unary(w, mvctx, max_coded_value, coded_value, 3, 0); |
| |
| } else { |
| const int num_of_bits_for_this_offset = |
| (shell_class == 0) ? 1 : shell_class; |
| for (int i = 0; i < num_of_bits_for_this_offset; ++i) { |
| aom_write_symbol(w, (shell_cls_offset >> i) & 1, |
| mvctx->shell_offset_other_class_cdf[0][i], 2); |
| } |
| } |
| |
| assert(scaled_mv_diff.col <= shell_index); |
| assert(IMPLIES(shell_index == 0, scaled_mv_diff.col == 0)); |
| if (shell_index > 0) { |
| int max_trunc_unary_value = MAX_COL_TRUNCATED_UNARY_VAL; |
| // Coding the col here |
| int maximum_pair_index = shell_index >> 1; |
| int this_pair_index = scaled_mv_diff.col <= maximum_pair_index |
| ? scaled_mv_diff.col |
| : shell_index - scaled_mv_diff.col; |
| assert(this_pair_index <= maximum_pair_index); |
| // Encode the pair index |
| if (maximum_pair_index > 0) { |
| write_tu_quasi_uniform(w, mvctx, maximum_pair_index, this_pair_index, |
| max_trunc_unary_value); |
| } |
| int skip_coding_col_bit = |
| (this_pair_index == maximum_pair_index) && ((shell_index % 2 == 0)); |
| assert( |
| IMPLIES(skip_coding_col_bit, scaled_mv_diff.col == maximum_pair_index)); |
| if (!skip_coding_col_bit) { |
| // aom_write_literal(w, scaled_mv_diff.col > maximum_pair_index, 1); |
| int context_index = shell_class < NUM_CTX_COL_MV_INDEX |
| ? shell_class |
| : NUM_CTX_COL_MV_INDEX - 1; |
| assert(context_index < NUM_CTX_COL_MV_INDEX); |
| aom_write_symbol(w, scaled_mv_diff.col > maximum_pair_index, |
| mvctx->col_mv_index_cdf[context_index], 2); |
| } |
| } |
| |
| // If auto_mv_step_size is enabled then keep track of the largest |
| // motion vector component used. |
| if (cpi && cpi->sf.mv_sf.auto_mv_step_size) { |
| int maxv = AOMMAX(abs(mv.row), abs(mv.col)) >> 3; |
| cpi->mv_search_params.max_mv_magnitude = |
| AOMMAX(maxv, cpi->mv_search_params.max_mv_magnitude); |
| } |
| } |
| void av1_update_mv_stats(nmv_context *mvctx, const MV mv_diff, |
| MvSubpelPrecision pb_mv_precision, |
| int is_adaptive_mvd) { |
| if (is_adaptive_mvd) { |
| av1_update_vq_amvd(mvctx, mv_diff); |
| return; |
| } |
| |
| int start_lsb = (MV_PRECISION_ONE_EIGHTH_PEL - pb_mv_precision); |
| const MV scaled_mv_diff = { abs(mv_diff.row) >> start_lsb, |
| abs(mv_diff.col) >> start_lsb }; |
| |
| int num_mv_class = get_default_num_shell_class(pb_mv_precision); |
| int shell_cls_offset; |
| const int shell_index = (scaled_mv_diff.row) + (scaled_mv_diff.col); |
| const int shell_class = |
| get_shell_class_with_precision(shell_index, &shell_cls_offset); |
| #if CONFIG_REDUCE_SYMBOL_SIZE |
| int num_mv_class_0, num_mv_class_1; |
| split_num_shell_class(num_mv_class, &num_mv_class_0, &num_mv_class_1); |
| if (shell_class < num_mv_class_0) { |
| update_cdf(mvctx->joint_shell_set_cdf, 0, 2); |
| update_cdf(mvctx->joint_shell_class_cdf_0[pb_mv_precision], shell_class, |
| num_mv_class_0); |
| } else { |
| update_cdf(mvctx->joint_shell_set_cdf, 1, 2); |
| #if CONFIG_MV_RANGE_EXTENSION |
| if (pb_mv_precision == MV_PRECISION_ONE_EIGHTH_PEL) { |
| const int map_shell_class = get_map_shell_class(shell_class); |
| update_cdf(mvctx->joint_shell_class_cdf_1[pb_mv_precision], |
| map_shell_class - num_mv_class_0, num_mv_class_1 - 1); |
| if (shell_class >= MAX_NUM_SHELL_CLASS - 2) { |
| update_cdf(mvctx->joint_shell_last_two_classes_cdf, |
| shell_class == MAX_NUM_SHELL_CLASS - 1, 2); |
| } |
| } else { |
| #endif // CONFIG_MV_RANGE_EXTENSION |
| update_cdf(mvctx->joint_shell_class_cdf_1[pb_mv_precision], |
| shell_class - num_mv_class_0, num_mv_class_1); |
| #if CONFIG_MV_RANGE_EXTENSION |
| } |
| #endif // CONFIG_MV_RANGE_EXTENSION |
| } |
| #else |
| #if CONFIG_MV_RANGE_EXTENSION |
| if (pb_mv_precision == MV_PRECISION_ONE_EIGHTH_PEL) { |
| const int map_shell_class = get_map_shell_class(shell_class); |
| update_cdf(mvctx->joint_shell_class_cdf[pb_mv_precision], map_shell_class, |
| num_mv_class - 1); |
| |
| if (shell_class >= MAX_NUM_SHELL_CLASS - 2) { |
| update_cdf(mvctx->joint_shell_last_two_classes_cdf, |
| shell_class == MAX_NUM_SHELL_CLASS - 1, 2); |
| } |
| } else { |
| #endif // CONFIG_MV_RANGE_EXTENSION |
| update_cdf(mvctx->joint_shell_class_cdf[pb_mv_precision], shell_class, |
| num_mv_class); |
| #if CONFIG_MV_RANGE_EXTENSION |
| } |
| #endif // CONFIG_MV_RANGE_EXTENSION |
| #endif // CONFIG_REDUCE_SYMBOL_SIZE |
| assert(shell_class >= 0 && shell_class < num_mv_class); |
| |
| if (shell_class < 2) { |
| assert(shell_cls_offset == 0 || shell_cls_offset == 1); |
| update_cdf(mvctx->shell_offset_low_class_cdf[shell_class], shell_cls_offset, |
| 2); |
| } else if (shell_class == 2) { |
| int max_coded_value = 3; |
| int coded_value = shell_cls_offset; |
| update_truncated_unary(mvctx, max_coded_value, coded_value, 3, 0); |
| |
| } else { |
| const int num_of_bits_for_this_offset = |
| (shell_class == 0) ? 1 : shell_class; |
| for (int i = 0; i < num_of_bits_for_this_offset; ++i) { |
| update_cdf(mvctx->shell_offset_other_class_cdf[0][i], |
| (shell_cls_offset >> i) & 1, 2); |
| } |
| } |
| |
| assert(scaled_mv_diff.col <= shell_index); |
| assert(IMPLIES(shell_index == 0, scaled_mv_diff.col == 0)); |
| if (shell_index > 0) { |
| int max_trunc_unary_value = MAX_COL_TRUNCATED_UNARY_VAL; |
| // Coding the col here |
| int maximum_pair_index = shell_index >> 1; |
| int this_pair_index = scaled_mv_diff.col <= maximum_pair_index |
| ? scaled_mv_diff.col |
| : shell_index - scaled_mv_diff.col; |
| assert(this_pair_index <= maximum_pair_index); |
| // Encode the pair index |
| if (maximum_pair_index > 0) { |
| update_tu_quasi_uniform(mvctx, maximum_pair_index, this_pair_index, |
| max_trunc_unary_value); |
| } |
| int skip_coding_col_bit = |
| (this_pair_index == maximum_pair_index) && ((shell_index % 2 == 0)); |
| assert( |
| IMPLIES(skip_coding_col_bit, scaled_mv_diff.col == maximum_pair_index)); |
| if (!skip_coding_col_bit) { |
| // aom_write_literal(w, scaled_mv_diff.col > maximum_pair_index, 1); |
| int context_index = shell_class < NUM_CTX_COL_MV_INDEX |
| ? shell_class |
| : NUM_CTX_COL_MV_INDEX - 1; |
| assert(context_index < NUM_CTX_COL_MV_INDEX); |
| update_cdf(mvctx->col_mv_index_cdf[context_index], |
| scaled_mv_diff.col > maximum_pair_index, 2); |
| } |
| } |
| } |
| |
| void av1_encode_dv(aom_writer *w, const MV *mv, const MV *ref, |
| nmv_context *mvctx, MvSubpelPrecision pb_mv_precision) { |
| MV low_prec_ref_mv = *ref; |
| if (pb_mv_precision < MV_PRECISION_HALF_PEL) |
| lower_mv_precision(&low_prec_ref_mv, pb_mv_precision); |
| const MV diff = { mv->row - low_prec_ref_mv.row, |
| mv->col - low_prec_ref_mv.col }; |
| assert(is_this_mv_precision_compliant(diff, pb_mv_precision)); |
| |
| const MV dummy = { 0, 0 }; |
| av1_encode_mv(NULL, dummy, w, mvctx, diff, pb_mv_precision, 0); |
| } |
| |
| void av1_build_vq_amvd_nmv_cost_table(MvCosts *mv_costs, |
| const nmv_context *ctx) { |
| int amvd_joints_costs[MV_JOINTS]; |
| int amvd_indices_costs[2][MAX_AMVD_INDEX]; |
| |
| av1_cost_tokens_from_cdf(amvd_joints_costs, ctx->amvd_joints_cdf, MV_JOINTS, |
| NULL); |
| for (int i = 0; i < 2; i++) { |
| av1_cost_tokens_from_cdf(amvd_indices_costs[i], |
| ctx->comps[i].amvd_indices_cdf, MAX_AMVD_INDEX, |
| NULL); |
| mv_costs->amvd_index_sign_cost[i][0] = av1_cost_literal(1); |
| mv_costs->amvd_index_sign_cost[i][1] = av1_cost_literal(1); |
| } |
| |
| for (int row_index = 0; row_index <= MAX_AMVD_INDEX; row_index++) { |
| for (int col_index = 0; col_index <= MAX_AMVD_INDEX; col_index++) { |
| mv_costs->amvd_index_mag_cost[row_index][col_index] = 0; |
| |
| // In current AMVD encoder, one of the row_index or col_index has to be 0 |
| if (row_index && col_index) continue; |
| const MV mv_diff_index = { row_index, col_index }; |
| const MV_JOINT_TYPE j = av1_get_mv_joint(&mv_diff_index); |
| assert(j < MV_JOINTS); |
| mv_costs->amvd_index_mag_cost[row_index][col_index] += |
| amvd_joints_costs[j]; |
| int code_row = mv_joint_vertical(j); |
| int code_col = mv_joint_horizontal(j); |
| |
| if (code_row) { |
| const int sign = mv_diff_index.row < 0; |
| const int mag = sign ? -mv_diff_index.row : mv_diff_index.row; |
| assert(mag <= MAX_AMVD_INDEX); |
| assert(mag > 0); |
| mv_costs->amvd_index_mag_cost[row_index][col_index] += |
| amvd_indices_costs[0][mag - 1]; |
| } |
| if (code_col) { |
| const int sign = mv_diff_index.col < 0; |
| const int mag = sign ? -mv_diff_index.col : mv_diff_index.col; |
| assert(mag <= MAX_AMVD_INDEX); |
| assert(mag > 0); |
| mv_costs->amvd_index_mag_cost[row_index][col_index] += |
| amvd_indices_costs[1][mag - 1]; |
| } |
| } |
| } |
| } |
| |
| void av1_build_vq_nmv_cost_table(MvCosts *mv_costs, const nmv_context *ctx, |
| MvSubpelPrecision precision, |
| IntraBCMvCosts *dv_costs, int is_ibc |
| |
| ) { |
| #if CONFIG_REDUCE_SYMBOL_SIZE |
| int joint_shell_set_cost[2]; |
| int joint_shell_class_cost_0[FIRST_SHELL_CLASS]; |
| int joint_shell_class_cost_1[SECOND_SHELL_CLASS]; |
| #else |
| #if CONFIG_MV_RANGE_EXTENSION |
| int joint_shell_class_cost[MAX_NUM_SHELL_CLASS - 1]; |
| #else |
| int joint_shell_class_cost[MAX_NUM_SHELL_CLASS]; |
| #endif // CONFIG_MV_RANGE_EXTENSION |
| #endif // CONFIG_REDUCE_SYMBOL_SIZE |
| |
| #if CONFIG_MV_RANGE_EXTENSION |
| int joint_shell_last_two_classes_cost[2]; |
| #endif // CONFIG_MV_RANGE_EXTENSION |
| |
| int shell_offset_low_class_cost[2][2]; |
| |
| int shell_offset_class2_cost[2]; |
| |
| int shell_offset_other_class_cost[NUM_CTX_CLASS_OFFSETS][SHELL_INT_OFFSET_BIT] |
| [2]; |
| |
| assert(IMPLIES(is_ibc, dv_costs != NULL)); |
| |
| int *shell_cost = is_ibc ? dv_costs->dv_joint_shell_cost[precision] |
| : mv_costs->nmv_joint_shell_cost[precision]; |
| |
| int start_lsb = (MV_PRECISION_ONE_EIGHTH_PEL - precision); |
| |
| // Symbols related to shell index |
| #if CONFIG_REDUCE_SYMBOL_SIZE |
| av1_cost_tokens_from_cdf(joint_shell_set_cost, ctx->joint_shell_set_cdf, 2, |
| NULL); |
| av1_cost_tokens_from_cdf(joint_shell_class_cost_0, |
| ctx->joint_shell_class_cdf_0[precision], |
| FIRST_SHELL_CLASS, NULL); |
| av1_cost_tokens_from_cdf(joint_shell_class_cost_1, |
| ctx->joint_shell_class_cdf_1[precision], |
| SECOND_SHELL_CLASS, NULL); |
| #else |
| av1_cost_tokens_from_cdf(joint_shell_class_cost, |
| ctx->joint_shell_class_cdf[precision], NULL); |
| #endif // CONFIG_REDUCE_SYMBOL_SIZE |
| |
| #if CONFIG_MV_RANGE_EXTENSION |
| if (precision == MV_PRECISION_ONE_EIGHTH_PEL) { |
| av1_cost_tokens_from_cdf(joint_shell_last_two_classes_cost, |
| ctx->joint_shell_last_two_classes_cdf, 2, NULL); |
| } |
| #endif // CONFIG_MV_RANGE_EXTENSION |
| |
| for (int i = 0; i < 2; i++) { |
| av1_cost_tokens_from_cdf(shell_offset_low_class_cost[i], |
| ctx->shell_offset_low_class_cdf[i], 2, NULL); |
| } |
| av1_cost_tokens_from_cdf(shell_offset_class2_cost, |
| ctx->shell_offset_class2_cdf, 2, NULL); |
| for (int j = 0; j < NUM_CTX_CLASS_OFFSETS; j++) { |
| for (int i = 0; i < SHELL_INT_OFFSET_BIT; i++) { |
| av1_cost_tokens_from_cdf(shell_offset_other_class_cost[j][i], |
| ctx->shell_offset_other_class_cdf[j][i], 2, |
| NULL); |
| } |
| } |
| int col_mv_greater_flags_cost[NUM_CTX_COL_MV_GTX][2]; |
| for (int i = 0; i < NUM_CTX_COL_MV_GTX; i++) { |
| av1_cost_tokens_from_cdf(col_mv_greater_flags_cost[i], |
| ctx->col_mv_greater_flags_cdf[i], 2, NULL); |
| } |
| |
| for (int i = 0; i < NUM_CTX_COL_MV_INDEX; i++) { |
| av1_cost_tokens_from_cdf(is_ibc |
| ? dv_costs->dv_col_mv_index_cost[precision][i] |
| : mv_costs->col_mv_index_cost[precision][i], |
| ctx->col_mv_index_cdf[i], 2, NULL); |
| } |
| |
| if (is_ibc) { |
| for (int i = 0; i < 2; i++) { |
| dv_costs->dv_sign_cost[precision][i][0] = av1_cost_literal(1); |
| dv_costs->dv_sign_cost[precision][i][1] = av1_cost_literal(1); |
| } |
| } |
| |
| if (!is_ibc) { |
| for (int i = 0; i < 2; i++) { |
| mv_costs->nmv_sign_cost[i][0] = av1_cost_literal(1); |
| mv_costs->nmv_sign_cost[i][1] = av1_cost_literal(1); |
| } |
| } |
| |
| int max_shell_idx = (2 * MV_MAX) >> start_lsb; |
| |
| #ifndef NDEBUG |
| const int num_mv_class = get_default_num_shell_class(precision); |
| #endif |
| |
| const int max_trunc_unary_value = MAX_COL_TRUNCATED_UNARY_VAL; |
| for (int max_idx_bits = 1; max_idx_bits <= max_trunc_unary_value; |
| max_idx_bits++) { |
| for (int coded_col = 0; coded_col <= max_trunc_unary_value; coded_col++) { |
| assert(max_idx_bits > 0); |
| int cost = 0; |
| for (int bit_idx = 0; bit_idx < max_idx_bits; ++bit_idx) { |
| int context_index = |
| bit_idx < NUM_CTX_COL_MV_GTX ? bit_idx : NUM_CTX_COL_MV_GTX - 1; |
| assert(context_index < NUM_CTX_COL_MV_GTX); |
| cost += col_mv_greater_flags_cost[context_index][coded_col != bit_idx]; |
| if (coded_col == bit_idx) break; |
| } |
| if (is_ibc) { |
| dv_costs->dv_col_mv_greater_flags_costs[precision][max_idx_bits] |
| [coded_col] = cost; |
| } else { |
| mv_costs |
| ->col_mv_greater_flags_costs[precision][max_idx_bits][coded_col] = |
| cost; |
| } |
| } |
| } |
| |
| // Precompute all possible shell cost |
| for (int shell_index = 0; shell_index <= max_shell_idx; shell_index++) { |
| shell_cost[shell_index] = 0; |
| int shell_cls_offset; |
| const int shell_class = |
| get_shell_class_with_precision(shell_index, &shell_cls_offset); |
| #if CONFIG_REDUCE_SYMBOL_SIZE |
| const int check_num_mv_class = get_default_num_shell_class(precision); |
| int num_mv_class_0, num_mv_class_1; |
| split_num_shell_class(check_num_mv_class, &num_mv_class_0, &num_mv_class_1); |
| if (shell_class < num_mv_class_0) { |
| shell_cost[shell_index] += joint_shell_set_cost[0]; |
| shell_cost[shell_index] += joint_shell_class_cost_0[shell_class]; |
| } else { |
| shell_cost[shell_index] += joint_shell_set_cost[1]; |
| #if CONFIG_MV_RANGE_EXTENSION |
| if (precision == MV_PRECISION_ONE_EIGHTH_PEL) { |
| const int map_shell_class = get_map_shell_class(shell_class); |
| shell_cost[shell_index] += |
| joint_shell_class_cost_1[map_shell_class - num_mv_class_0]; |
| if (shell_class >= MAX_NUM_SHELL_CLASS - 2) { |
| const int is_last_class = (shell_class == MAX_NUM_SHELL_CLASS - 1); |
| shell_cost[shell_index] += |
| joint_shell_last_two_classes_cost[is_last_class]; |
| } |
| } else { |
| #endif // CONFIG_MV_RANGE_EXTENSION |
| shell_cost[shell_index] += |
| joint_shell_class_cost_1[shell_class - num_mv_class_0]; |
| #if CONFIG_MV_RANGE_EXTENSION |
| } |
| #endif // CONFIG_MV_RANGE_EXTENSION |
| } |
| #else |
| #if CONFIG_MV_RANGE_EXTENSION |
| if (precision == MV_PRECISION_ONE_EIGHTH_PEL) { |
| const int map_shell_class = get_map_shell_class(shell_class); |
| shell_cost[shell_index] += joint_shell_class_cost[map_shell_class]; |
| if (shell_class >= MAX_NUM_SHELL_CLASS - 2) { |
| const int is_last_class = (shell_class == MAX_NUM_SHELL_CLASS - 1); |
| shell_cost[shell_index] += |
| joint_shell_last_two_classes_cost[is_last_class]; |
| } |
| } else { |
| #endif // CONFIG_MV_RANGE_EXTENSION |
| shell_cost[shell_index] += joint_shell_class_cost[shell_class]; |
| #if CONFIG_MV_RANGE_EXTENSION |
| } |
| #endif // CONFIG_MV_RANGE_EXTENSION |
| #endif // CONFIG_REDUCE_SYMBOL_SIZE |
| assert(shell_class >= 0 && shell_class < num_mv_class); |
| |
| // Shell offset cost |
| if (shell_class < 2) { |
| assert(shell_cls_offset == 0 || shell_cls_offset == 1); |
| shell_cost[shell_index] += |
| shell_offset_low_class_cost[shell_class][shell_cls_offset]; |
| |
| } else if (shell_class == 2) { |
| int max_idx_bits = 3; |
| int coded_value = shell_cls_offset; |
| for (int bit_idx = 0; bit_idx < max_idx_bits; ++bit_idx) { |
| shell_cost[shell_index] += |
| bit_idx ? av1_cost_literal(1) |
| : shell_offset_class2_cost[coded_value != bit_idx]; |
| |
| if (coded_value == bit_idx) break; |
| } |
| } else { |
| const int num_of_bits_for_this_offset = shell_class; |
| assert(num_of_bits_for_this_offset <= SHELL_INT_OFFSET_BIT); |
| for (int i = 0; i < num_of_bits_for_this_offset; ++i) { |
| shell_cost[shell_index] += |
| shell_offset_other_class_cost[0][i][(shell_cls_offset >> i) & 1]; |
| } |
| } |
| |
| } // for (int shell_index = 0; shell_index <= max_shell_idx; |
| // shell_index++) |
| } |
| |
| int_mv av1_get_ref_mv_from_stack(int ref_idx, |
| const MV_REFERENCE_FRAME *ref_frame, |
| int ref_mv_idx, |
| const MB_MODE_INFO_EXT *mbmi_ext, |
| const MB_MODE_INFO *mbmi) { |
| const int8_t ref_frame_type = av1_ref_frame_type(ref_frame); |
| const CANDIDATE_MV *curr_ref_mv_stack = |
| has_second_drl(mbmi) ? mbmi_ext->ref_mv_stack[ref_frame[ref_idx]] |
| : mbmi_ext->ref_mv_stack[ref_frame_type]; |
| |
| if (is_inter_ref_frame(ref_frame[1])) { |
| assert(ref_idx == 0 || ref_idx == 1); |
| return ref_idx && !has_second_drl(mbmi) |
| ? curr_ref_mv_stack[ref_mv_idx].comp_mv |
| : curr_ref_mv_stack[ref_mv_idx].this_mv; |
| } |
| |
| assert(ref_idx == 0); |
| if (ref_mv_idx < mbmi_ext->ref_mv_count[ref_frame_type]) { |
| return curr_ref_mv_stack[ref_mv_idx].this_mv; |
| } else if (is_tip_ref_frame(ref_frame_type)) { |
| int_mv zero_mv; |
| zero_mv.as_int = 0; |
| return zero_mv; |
| } else { |
| return mbmi_ext->global_mvs[ref_frame_type]; |
| } |
| } |
| |
| int_mv av1_get_ref_mv(const MACROBLOCK *x, int ref_idx) { |
| const MACROBLOCKD *xd = &x->e_mbd; |
| const MB_MODE_INFO *mbmi = xd->mi[0]; |
| if (have_nearmv_newmv_in_inter_mode(mbmi->mode)) { |
| assert(has_second_ref(mbmi)); |
| } |
| const int ref_mv_idx = get_ref_mv_idx(mbmi, ref_idx); |
| return av1_get_ref_mv_from_stack(ref_idx, mbmi->ref_frame, ref_mv_idx, |
| x->mbmi_ext, mbmi); |
| } |
| |
| /** |
| * Get the best reference MV (for use with intrabc) from the refmv stack. |
| * This function will search all available references and return the first one |
| * that is not zero or invalid. |
| * |
| * @param allow_hp Can high-precision be used? |
| * @param mbmi_ext The MB ext struct. Used in get_ref_mv_from_stack. |
| * @param ref_frame The reference frame to find motion vectors from. |
| * @param is_integer is the MV an integer? |
| * @return The best MV, or INVALID_MV if none exists. |
| */ |
| |
| int_mv av1_find_best_ref_mv_from_stack(const MB_MODE_INFO_EXT *mbmi_ext, |
| const MB_MODE_INFO *mbmi, |
| MV_REFERENCE_FRAME ref_frame, |
| MvSubpelPrecision precision) { |
| int_mv mv; |
| bool found_ref_mv = false; |
| MV_REFERENCE_FRAME ref_frames[2] = { ref_frame, NONE_FRAME }; |
| int range = AOMMIN(mbmi_ext->ref_mv_count[ref_frame], MAX_REF_MV_STACK_SIZE); |
| for (int i = 0; i < range; i++) { |
| mv = av1_get_ref_mv_from_stack(0, ref_frames, i, mbmi_ext, mbmi); |
| if (mv.as_int != 0 && mv.as_int != INVALID_MV) { |
| found_ref_mv = true; |
| break; |
| } |
| } |
| lower_mv_precision(&mv.as_mv, precision); |
| if (!found_ref_mv) mv.as_int = INVALID_MV; |
| return mv; |
| } |
| |
| int_mv av1_find_best_ref_mvs_from_stack(const MB_MODE_INFO_EXT *mbmi_ext, |
| MV_REFERENCE_FRAME ref_frame, |
| MvSubpelPrecision precision) { |
| int_mv mv; |
| const int ref_idx = 0; |
| MV_REFERENCE_FRAME ref_frames[2] = { ref_frame, NONE_FRAME }; |
| // this function is not called in this software. |
| MB_MODE_INFO mbmi; |
| mbmi.skip_mode = 0; |
| mbmi.mode = NEWMV; |
| mbmi.ref_frame[0] = ref_frame; |
| mv = av1_get_ref_mv_from_stack(ref_idx, ref_frames, 0, mbmi_ext, &mbmi); |
| lower_mv_precision(&mv.as_mv, precision); |
| return mv; |
| } |
