/* * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ static int FUNC(rbsp_trailing_bits)(CodedBitstreamContext *ctx, RWContext *rw) { int err; av_unused int one = 1, zero = 0; xu(1, rbsp_stop_one_bit, one, 1, 1); while (byte_alignment(rw) != 0) xu(1, rbsp_alignment_zero_bit, zero, 0, 0); return 0; } static int FUNC(nal_unit_header)(CodedBitstreamContext *ctx, RWContext *rw, H265RawNALUnitHeader *current, int expected_nal_unit_type) { int err; u(1, forbidden_zero_bit, 0, 0); if (expected_nal_unit_type >= 0) u(6, nal_unit_type, expected_nal_unit_type, expected_nal_unit_type); else u(6, nal_unit_type, 0, 63); u(6, nuh_layer_id, 0, 62); u(3, nuh_temporal_id_plus1, 1, 7); return 0; } static int FUNC(byte_alignment)(CodedBitstreamContext *ctx, RWContext *rw) { int err; av_unused int one = 1, zero = 0; xu(1, alignment_bit_equal_to_one, one, 1, 1); while (byte_alignment(rw) != 0) xu(1, alignment_bit_equal_to_zero, zero, 0, 0); return 0; } static int FUNC(extension_data)(CodedBitstreamContext *ctx, RWContext *rw, H265RawPSExtensionData *current) { int err; size_t k; #ifdef READ GetBitContext start; uint8_t bit; start = *rw; for (k = 0; cbs_h2645_read_more_rbsp_data(rw); k++) skip_bits(rw, 1); current->bit_length = k; if (k > 0) { *rw = start; allocate(current->data, (current->bit_length + 7) / 8); for (k = 0; k < current->bit_length; k++) { xu(1, extension_data, bit, 0, 1); current->data[k / 8] |= bit << (7 - k % 8); } } #else for (k = 0; k < current->bit_length; k++) xu(1, extension_data, current->data[k / 8] >> (7 - k % 8), 0, 1); #endif return 0; } static int FUNC(profile_tier_level)(CodedBitstreamContext *ctx, RWContext *rw, H265RawProfileTierLevel *current, int profile_present_flag, int max_num_sub_layers_minus1) { av_unused unsigned int zero = 0; int err, i, j; if (profile_present_flag) { u(2, general_profile_space, 0, 0); flag(general_tier_flag); u(5, general_profile_idc, 0, 31); for (j = 0; j < 32; j++) flag(general_profile_compatibility_flag[j]); flag(general_progressive_source_flag); flag(general_interlaced_source_flag); flag(general_non_packed_constraint_flag); flag(general_frame_only_constraint_flag); #define profile_compatible(x) (current->general_profile_idc == (x) || \ current->general_profile_compatibility_flag[x]) if (profile_compatible(4) || profile_compatible(5) || profile_compatible(6) || profile_compatible(7) || profile_compatible(8) || profile_compatible(9) || profile_compatible(10)) { flag(general_max_12bit_constraint_flag); flag(general_max_10bit_constraint_flag); flag(general_max_8bit_constraint_flag); flag(general_max_422chroma_constraint_flag); flag(general_max_420chroma_constraint_flag); flag(general_max_monochrome_constraint_flag); flag(general_intra_constraint_flag); flag(general_one_picture_only_constraint_flag); flag(general_lower_bit_rate_constraint_flag); if (profile_compatible(5) || profile_compatible(9) || profile_compatible(10)) { flag(general_max_14bit_constraint_flag); xu(24, general_reserved_zero_33bits, zero, 0, 0); xu(9, general_reserved_zero_33bits, zero, 0, 0); } else { xu(24, general_reserved_zero_34bits, zero, 0, 0); xu(10, general_reserved_zero_34bits, zero, 0, 0); } } else { xu(24, general_reserved_zero_43bits, zero, 0, 0); xu(19, general_reserved_zero_43bits, zero, 0, 0); } if (profile_compatible(1) || profile_compatible(2) || profile_compatible(3) || profile_compatible(4) || profile_compatible(5) || profile_compatible(9)) { flag(general_inbld_flag); } else { xu(1, general_reserved_zero_bit, zero, 0, 0); } #undef profile_compatible } u(8, general_level_idc, 0, 255); for (i = 0; i < max_num_sub_layers_minus1; i++) { flag(sub_layer_profile_present_flag[i]); flag(sub_layer_level_present_flag[i]); } if (max_num_sub_layers_minus1 > 0) { for (i = max_num_sub_layers_minus1; i < 8; i++) { av_unused int zero = 0; xu(2, reserved_zero_2bits, zero, 0, 0); } } for (i = 0; i < max_num_sub_layers_minus1; i++) { if (current->sub_layer_profile_present_flag[i]) return AVERROR_PATCHWELCOME; if (current->sub_layer_level_present_flag[i]) return AVERROR_PATCHWELCOME; } return 0; } static int FUNC(sub_layer_hrd_parameters)(CodedBitstreamContext *ctx, RWContext *rw, H265RawHRDParameters *hrd, int nal, int sub_layer_id) { H265RawSubLayerHRDParameters *current; int err, i; if (nal) current = &hrd->nal_sub_layer_hrd_parameters[sub_layer_id]; else current = &hrd->vcl_sub_layer_hrd_parameters[sub_layer_id]; for (i = 0; i <= hrd->cpb_cnt_minus1[sub_layer_id]; i++) { ue(bit_rate_value_minus1[i], 0, UINT32_MAX - 1); ue(cpb_size_value_minus1[i], 0, UINT32_MAX - 1); if (hrd->sub_pic_hrd_params_present_flag) { ue(cpb_size_du_value_minus1[i], 0, UINT32_MAX - 1); ue(bit_rate_du_value_minus1[i], 0, UINT32_MAX - 1); } flag(cbr_flag[i]); } return 0; } static int FUNC(hrd_parameters)(CodedBitstreamContext *ctx, RWContext *rw, H265RawHRDParameters *current, int common_inf_present_flag, int max_num_sub_layers_minus1) { int err, i; if (common_inf_present_flag) { flag(nal_hrd_parameters_present_flag); flag(vcl_hrd_parameters_present_flag); if (current->nal_hrd_parameters_present_flag || current->vcl_hrd_parameters_present_flag) { flag(sub_pic_hrd_params_present_flag); if (current->sub_pic_hrd_params_present_flag) { u(8, tick_divisor_minus2, 0, 255); u(5, du_cpb_removal_delay_increment_length_minus1, 0, 31); flag(sub_pic_cpb_params_in_pic_timing_sei_flag); u(5, dpb_output_delay_du_length_minus1, 0, 31); } u(4, bit_rate_scale, 0, 15); u(4, cpb_size_scale, 0, 15); if (current->sub_pic_hrd_params_present_flag) u(4, cpb_size_du_scale, 0, 15); u(5, initial_cpb_removal_delay_length_minus1, 0, 31); u(5, au_cpb_removal_delay_length_minus1, 0, 31); u(5, dpb_output_delay_length_minus1, 0, 31); } else { infer(sub_pic_hrd_params_present_flag, 0); infer(initial_cpb_removal_delay_length_minus1, 23); infer(au_cpb_removal_delay_length_minus1, 23); infer(dpb_output_delay_length_minus1, 23); } } for (i = 0; i <= max_num_sub_layers_minus1; i++) { flag(fixed_pic_rate_general_flag[i]); if (!current->fixed_pic_rate_general_flag[i]) flag(fixed_pic_rate_within_cvs_flag[i]); else infer(fixed_pic_rate_within_cvs_flag[i], 1); if (current->fixed_pic_rate_within_cvs_flag[i]) { ue(elemental_duration_in_tc_minus1[i], 0, 2047); infer(low_delay_hrd_flag[i], 0); } else flag(low_delay_hrd_flag[i]); if (!current->low_delay_hrd_flag[i]) ue(cpb_cnt_minus1[i], 0, 31); else infer(cpb_cnt_minus1[i], 0); if (current->nal_hrd_parameters_present_flag) CHECK(FUNC(sub_layer_hrd_parameters)(ctx, rw, current, 0, i)); if (current->vcl_hrd_parameters_present_flag) CHECK(FUNC(sub_layer_hrd_parameters)(ctx, rw, current, 1, i)); } return 0; } static int FUNC(vui_parameters)(CodedBitstreamContext *ctx, RWContext *rw, H265RawVUI *current, const H265RawSPS *sps) { int err; flag(aspect_ratio_info_present_flag); if (current->aspect_ratio_info_present_flag) { u(8, aspect_ratio_idc, 0, 255); if (current->aspect_ratio_idc == 255) { u(16, sar_width, 0, 65535); u(16, sar_height, 0, 65535); } } else { infer(aspect_ratio_idc, 0); } flag(overscan_info_present_flag); if (current->overscan_info_present_flag) flag(overscan_appropriate_flag); flag(video_signal_type_present_flag); if (current->video_signal_type_present_flag) { u(3, video_format, 0, 7); flag(video_full_range_flag); flag(colour_description_present_flag); if (current->colour_description_present_flag) { u(8, colour_primaries, 0, 255); u(8, transfer_characteristics, 0, 255); u(8, matrix_coefficients, 0, 255); } else { infer(colour_primaries, 2); infer(transfer_characteristics, 2); infer(matrix_coefficients, 2); } } else { infer(video_format, 5); infer(video_full_range_flag, 0); infer(colour_primaries, 2); infer(transfer_characteristics, 2); infer(matrix_coefficients, 2); } flag(chroma_loc_info_present_flag); if (current->chroma_loc_info_present_flag) { ue(chroma_sample_loc_type_top_field, 0, 5); ue(chroma_sample_loc_type_bottom_field, 0, 5); } else { infer(chroma_sample_loc_type_top_field, 0); infer(chroma_sample_loc_type_bottom_field, 0); } flag(neutral_chroma_indication_flag); flag(field_seq_flag); flag(frame_field_info_present_flag); flag(default_display_window_flag); if (current->default_display_window_flag) { ue(def_disp_win_left_offset, 0, 16384); ue(def_disp_win_right_offset, 0, 16384); ue(def_disp_win_top_offset, 0, 16384); ue(def_disp_win_bottom_offset, 0, 16384); } flag(vui_timing_info_present_flag); if (current->vui_timing_info_present_flag) { u(32, vui_num_units_in_tick, 1, UINT32_MAX); u(32, vui_time_scale, 1, UINT32_MAX); flag(vui_poc_proportional_to_timing_flag); if (current->vui_poc_proportional_to_timing_flag) ue(vui_num_ticks_poc_diff_one_minus1, 0, UINT32_MAX - 1); flag(vui_hrd_parameters_present_flag); if (current->vui_hrd_parameters_present_flag) { CHECK(FUNC(hrd_parameters)(ctx, rw, ¤t->hrd_parameters, 1, sps->sps_max_sub_layers_minus1)); } } flag(bitstream_restriction_flag); if (current->bitstream_restriction_flag) { flag(tiles_fixed_structure_flag); flag(motion_vectors_over_pic_boundaries_flag); flag(restricted_ref_pic_lists_flag); ue(min_spatial_segmentation_idc, 0, 4095); ue(max_bytes_per_pic_denom, 0, 16); ue(max_bits_per_min_cu_denom, 0, 16); ue(log2_max_mv_length_horizontal, 0, 16); ue(log2_max_mv_length_vertical, 0, 16); } else { infer(tiles_fixed_structure_flag, 0); infer(motion_vectors_over_pic_boundaries_flag, 1); infer(min_spatial_segmentation_idc, 0); infer(max_bytes_per_pic_denom, 2); infer(max_bits_per_min_cu_denom, 1); infer(log2_max_mv_length_horizontal, 15); infer(log2_max_mv_length_vertical, 15); } return 0; } static int FUNC(vps)(CodedBitstreamContext *ctx, RWContext *rw, H265RawVPS *current) { int err, i, j; HEADER("Video Parameter Set"); CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, HEVC_NAL_VPS)); u(4, vps_video_parameter_set_id, 0, 15); flag(vps_base_layer_internal_flag); flag(vps_base_layer_available_flag); u(6, vps_max_layers_minus1, 0, HEVC_MAX_LAYERS - 1); u(3, vps_max_sub_layers_minus1, 0, HEVC_MAX_SUB_LAYERS - 1); flag(vps_temporal_id_nesting_flag); if (current->vps_max_sub_layers_minus1 == 0 && current->vps_temporal_id_nesting_flag != 1) { av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid stream: " "vps_temporal_id_nesting_flag must be 1 if " "vps_max_sub_layers_minus1 is 0.\n"); return AVERROR_INVALIDDATA; } { av_unused uint16_t ffff = 0xffff; xu(16, vps_reserved_0xffff_16bits, ffff, 0xffff, 0xffff); } CHECK(FUNC(profile_tier_level)(ctx, rw, ¤t->profile_tier_level, 1, current->vps_max_sub_layers_minus1)); flag(vps_sub_layer_ordering_info_present_flag); for (i = (current->vps_sub_layer_ordering_info_present_flag ? 0 : current->vps_max_sub_layers_minus1); i <= current->vps_max_sub_layers_minus1; i++) { ue(vps_max_dec_pic_buffering_minus1[i], 0, HEVC_MAX_DPB_SIZE - 1); ue(vps_max_num_reorder_pics[i], 0, current->vps_max_dec_pic_buffering_minus1[i]); ue(vps_max_latency_increase_plus1[i], 0, UINT32_MAX - 1); } if (!current->vps_sub_layer_ordering_info_present_flag) { for (i = 0; i < current->vps_max_sub_layers_minus1; i++) { infer(vps_max_dec_pic_buffering_minus1[i], current->vps_max_dec_pic_buffering_minus1[current->vps_max_sub_layers_minus1]); infer(vps_max_num_reorder_pics[i], current->vps_max_num_reorder_pics[current->vps_max_sub_layers_minus1]); infer(vps_max_latency_increase_plus1[i], current->vps_max_latency_increase_plus1[current->vps_max_sub_layers_minus1]); } } u(6, vps_max_layer_id, 0, HEVC_MAX_LAYERS - 1); ue(vps_num_layer_sets_minus1, 0, HEVC_MAX_LAYER_SETS - 1); for (i = 1; i <= current->vps_num_layer_sets_minus1; i++) { for (j = 0; j <= current->vps_max_layer_id; j++) flag(layer_id_included_flag[i][j]); } for (j = 0; j <= current->vps_max_layer_id; j++) infer(layer_id_included_flag[0][j], j == 0); flag(vps_timing_info_present_flag); if (current->vps_timing_info_present_flag) { u(32, vps_num_units_in_tick, 1, UINT32_MAX); u(32, vps_time_scale, 1, UINT32_MAX); flag(vps_poc_proportional_to_timing_flag); if (current->vps_poc_proportional_to_timing_flag) ue(vps_num_ticks_poc_diff_one_minus1, 0, UINT32_MAX - 1); ue(vps_num_hrd_parameters, 0, current->vps_num_layer_sets_minus1 + 1); for (i = 0; i < current->vps_num_hrd_parameters; i++) { ue(hrd_layer_set_idx[i], current->vps_base_layer_internal_flag ? 0 : 1, current->vps_num_layer_sets_minus1); if (i > 0) flag(cprms_present_flag[i]); else infer(cprms_present_flag[0], 1); CHECK(FUNC(hrd_parameters)(ctx, rw, ¤t->hrd_parameters[i], current->cprms_present_flag[i], current->vps_max_sub_layers_minus1)); } } flag(vps_extension_flag); if (current->vps_extension_flag) CHECK(FUNC(extension_data)(ctx, rw, ¤t->extension_data)); CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); return 0; } static int FUNC(st_ref_pic_set)(CodedBitstreamContext *ctx, RWContext *rw, H265RawSTRefPicSet *current, int st_rps_idx, const H265RawSPS *sps) { int err, i, j; if (st_rps_idx != 0) flag(inter_ref_pic_set_prediction_flag); else infer(inter_ref_pic_set_prediction_flag, 0); if (current->inter_ref_pic_set_prediction_flag) { unsigned int ref_rps_idx, num_delta_pocs; const H265RawSTRefPicSet *ref; int delta_rps, d_poc; int ref_delta_poc_s0[HEVC_MAX_REFS], ref_delta_poc_s1[HEVC_MAX_REFS]; int delta_poc_s0[HEVC_MAX_REFS], delta_poc_s1[HEVC_MAX_REFS]; uint8_t used_by_curr_pic_s0[HEVC_MAX_REFS], used_by_curr_pic_s1[HEVC_MAX_REFS]; if (st_rps_idx == sps->num_short_term_ref_pic_sets) ue(delta_idx_minus1, 0, st_rps_idx - 1); else infer(delta_idx_minus1, 0); ref_rps_idx = st_rps_idx - (current->delta_idx_minus1 + 1); ref = &sps->st_ref_pic_set[ref_rps_idx]; num_delta_pocs = ref->num_negative_pics + ref->num_positive_pics; flag(delta_rps_sign); ue(abs_delta_rps_minus1, 0, INT16_MAX); delta_rps = (1 - 2 * current->delta_rps_sign) * (current->abs_delta_rps_minus1 + 1); for (j = 0; j <= num_delta_pocs; j++) { flag(used_by_curr_pic_flag[j]); if (!current->used_by_curr_pic_flag[j]) flag(use_delta_flag[j]); else infer(use_delta_flag[j], 1); } // Since the stored form of an RPS here is actually the delta-step // form used when inter_ref_pic_set_prediction_flag is not set, we // need to reconstruct that here in order to be able to refer to // the RPS later (which is required for parsing, because we don't // even know what syntax elements appear without it). Therefore, // this code takes the delta-step form of the reference set, turns // it into the delta-array form, applies the prediction process of // 7.4.8, converts the result back to the delta-step form, and // stores that as the current set for future use. Note that the // inferences here mean that writers using prediction will need // to fill in the delta-step values correctly as well - since the // whole RPS prediction process is somewhat overly sophisticated, // this hopefully forms a useful check for them to ensure their // predicted form actually matches what was intended rather than // an onerous additional requirement. d_poc = 0; for (i = 0; i < ref->num_negative_pics; i++) { d_poc -= ref->delta_poc_s0_minus1[i] + 1; ref_delta_poc_s0[i] = d_poc; } d_poc = 0; for (i = 0; i < ref->num_positive_pics; i++) { d_poc += ref->delta_poc_s1_minus1[i] + 1; ref_delta_poc_s1[i] = d_poc; } i = 0; for (j = ref->num_positive_pics - 1; j >= 0; j--) { d_poc = ref_delta_poc_s1[j] + delta_rps; if (d_poc < 0 && current->use_delta_flag[ref->num_negative_pics + j]) { delta_poc_s0[i] = d_poc; used_by_curr_pic_s0[i++] = current->used_by_curr_pic_flag[ref->num_negative_pics + j]; } } if (delta_rps < 0 && current->use_delta_flag[num_delta_pocs]) { delta_poc_s0[i] = delta_rps; used_by_curr_pic_s0[i++] = current->used_by_curr_pic_flag[num_delta_pocs]; } for (j = 0; j < ref->num_negative_pics; j++) { d_poc = ref_delta_poc_s0[j] + delta_rps; if (d_poc < 0 && current->use_delta_flag[j]) { delta_poc_s0[i] = d_poc; used_by_curr_pic_s0[i++] = current->used_by_curr_pic_flag[j]; } } infer(num_negative_pics, i); for (i = 0; i < current->num_negative_pics; i++) { infer(delta_poc_s0_minus1[i], -(delta_poc_s0[i] - (i == 0 ? 0 : delta_poc_s0[i - 1])) - 1); infer(used_by_curr_pic_s0_flag[i], used_by_curr_pic_s0[i]); } i = 0; for (j = ref->num_negative_pics - 1; j >= 0; j--) { d_poc = ref_delta_poc_s0[j] + delta_rps; if (d_poc > 0 && current->use_delta_flag[j]) { delta_poc_s1[i] = d_poc; used_by_curr_pic_s1[i++] = current->used_by_curr_pic_flag[j]; } } if (delta_rps > 0 && current->use_delta_flag[num_delta_pocs]) { delta_poc_s1[i] = delta_rps; used_by_curr_pic_s1[i++] = current->used_by_curr_pic_flag[num_delta_pocs]; } for (j = 0; j < ref->num_positive_pics; j++) { d_poc = ref_delta_poc_s1[j] + delta_rps; if (d_poc > 0 && current->use_delta_flag[ref->num_negative_pics + j]) { delta_poc_s1[i] = d_poc; used_by_curr_pic_s1[i++] = current->used_by_curr_pic_flag[ref->num_negative_pics + j]; } } infer(num_positive_pics, i); for (i = 0; i < current->num_positive_pics; i++) { infer(delta_poc_s1_minus1[i], delta_poc_s1[i] - (i == 0 ? 0 : delta_poc_s1[i - 1]) - 1); infer(used_by_curr_pic_s1_flag[i], used_by_curr_pic_s1[i]); } } else { ue(num_negative_pics, 0, 15); ue(num_positive_pics, 0, 15 - current->num_negative_pics); for (i = 0; i < current->num_negative_pics; i++) { ue(delta_poc_s0_minus1[i], 0, INT16_MAX); flag(used_by_curr_pic_s0_flag[i]); } for (i = 0; i < current->num_positive_pics; i++) { ue(delta_poc_s1_minus1[i], 0, INT16_MAX); flag(used_by_curr_pic_s1_flag[i]); } } return 0; } static int FUNC(scaling_list_data)(CodedBitstreamContext *ctx, RWContext *rw, H265RawScalingList *current) { int sizeId, matrixId; int err, n, i; for (sizeId = 0; sizeId < 4; sizeId++) { for (matrixId = 0; matrixId < 6; matrixId += (sizeId == 3 ? 3 : 1)) { flag(scaling_list_pred_mode_flag[sizeId][matrixId]); if (!current->scaling_list_pred_mode_flag[sizeId][matrixId]) { ue(scaling_list_pred_matrix_id_delta[sizeId][matrixId], 0, sizeId == 3 ? matrixId / 3 : matrixId); } else { n = FFMIN(64, 1 << (4 + (sizeId << 1))); if (sizeId > 1) se(scaling_list_dc_coef_minus8[sizeId - 2][matrixId], -7, +247); for (i = 0; i < n; i++) { xse(scaling_list_delta_coeff, current->scaling_list_delta_coeff[sizeId][matrixId][i], -128, +127); } } } } return 0; } static int FUNC(sps_range_extension)(CodedBitstreamContext *ctx, RWContext *rw, H265RawSPS *current) { int err; flag(transform_skip_rotation_enabled_flag); flag(transform_skip_context_enabled_flag); flag(implicit_rdpcm_enabled_flag); flag(explicit_rdpcm_enabled_flag); flag(extended_precision_processing_flag); flag(intra_smoothing_disabled_flag); flag(high_precision_offsets_enabled_flag); flag(persistent_rice_adaptation_enabled_flag); flag(cabac_bypass_alignment_enabled_flag); return 0; } static int FUNC(sps_scc_extension)(CodedBitstreamContext *ctx, RWContext *rw, H265RawSPS *current) { int err, comp, i; flag(sps_curr_pic_ref_enabled_flag); flag(palette_mode_enabled_flag); if (current->palette_mode_enabled_flag) { ue(palette_max_size, 0, 64); ue(delta_palette_max_predictor_size, 0, 128); flag(sps_palette_predictor_initializer_present_flag); if (current->sps_palette_predictor_initializer_present_flag) { ue(sps_num_palette_predictor_initializer_minus1, 0, 128); for (comp = 0; comp < (current->chroma_format_idc ? 3 : 1); comp++) { int bit_depth = comp == 0 ? current->bit_depth_luma_minus8 + 8 : current->bit_depth_chroma_minus8 + 8; for (i = 0; i <= current->sps_num_palette_predictor_initializer_minus1; i++) u(bit_depth, sps_palette_predictor_initializers[comp][i], 0, MAX_UINT_BITS(bit_depth)); } } } u(2, motion_vector_resolution_control_idc, 0, 2); flag(intra_boundary_filtering_disable_flag); return 0; } static int FUNC(sps)(CodedBitstreamContext *ctx, RWContext *rw, H265RawSPS *current) { CodedBitstreamH265Context *h265 = ctx->priv_data; const H265RawVPS *vps; int err, i; unsigned int min_cb_log2_size_y, ctb_log2_size_y, min_cb_size_y, min_tb_log2_size_y; HEADER("Sequence Parameter Set"); CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, HEVC_NAL_SPS)); u(4, sps_video_parameter_set_id, 0, 15); h265->active_vps = vps = h265->vps[current->sps_video_parameter_set_id]; u(3, sps_max_sub_layers_minus1, 0, HEVC_MAX_SUB_LAYERS - 1); flag(sps_temporal_id_nesting_flag); if (vps) { if (vps->vps_max_sub_layers_minus1 > current->sps_max_sub_layers_minus1) { av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid stream: " "sps_max_sub_layers_minus1 (%d) must be less than or equal to " "vps_max_sub_layers_minus1 (%d).\n", vps->vps_max_sub_layers_minus1, current->sps_max_sub_layers_minus1); return AVERROR_INVALIDDATA; } if (vps->vps_temporal_id_nesting_flag && !current->sps_temporal_id_nesting_flag) { av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid stream: " "sps_temporal_id_nesting_flag must be 1 if " "vps_temporal_id_nesting_flag is 1.\n"); return AVERROR_INVALIDDATA; } } CHECK(FUNC(profile_tier_level)(ctx, rw, ¤t->profile_tier_level, 1, current->sps_max_sub_layers_minus1)); ue(sps_seq_parameter_set_id, 0, 15); ue(chroma_format_idc, 0, 3); if (current->chroma_format_idc == 3) flag(separate_colour_plane_flag); else infer(separate_colour_plane_flag, 0); ue(pic_width_in_luma_samples, 1, HEVC_MAX_WIDTH); ue(pic_height_in_luma_samples, 1, HEVC_MAX_HEIGHT); flag(conformance_window_flag); if (current->conformance_window_flag) { ue(conf_win_left_offset, 0, current->pic_width_in_luma_samples); ue(conf_win_right_offset, 0, current->pic_width_in_luma_samples); ue(conf_win_top_offset, 0, current->pic_height_in_luma_samples); ue(conf_win_bottom_offset, 0, current->pic_height_in_luma_samples); } else { infer(conf_win_left_offset, 0); infer(conf_win_right_offset, 0); infer(conf_win_top_offset, 0); infer(conf_win_bottom_offset, 0); } ue(bit_depth_luma_minus8, 0, 8); ue(bit_depth_chroma_minus8, 0, 8); ue(log2_max_pic_order_cnt_lsb_minus4, 0, 12); flag(sps_sub_layer_ordering_info_present_flag); for (i = (current->sps_sub_layer_ordering_info_present_flag ? 0 : current->sps_max_sub_layers_minus1); i <= current->sps_max_sub_layers_minus1; i++) { ue(sps_max_dec_pic_buffering_minus1[i], 0, HEVC_MAX_DPB_SIZE - 1); ue(sps_max_num_reorder_pics[i], 0, current->sps_max_dec_pic_buffering_minus1[i]); ue(sps_max_latency_increase_plus1[i], 0, UINT32_MAX - 1); } if (!current->sps_sub_layer_ordering_info_present_flag) { for (i = 0; i < current->sps_max_sub_layers_minus1; i++) { infer(sps_max_dec_pic_buffering_minus1[i], current->sps_max_dec_pic_buffering_minus1[current->sps_max_sub_layers_minus1]); infer(sps_max_num_reorder_pics[i], current->sps_max_num_reorder_pics[current->sps_max_sub_layers_minus1]); infer(sps_max_latency_increase_plus1[i], current->sps_max_latency_increase_plus1[current->sps_max_sub_layers_minus1]); } } ue(log2_min_luma_coding_block_size_minus3, 0, 3); min_cb_log2_size_y = current->log2_min_luma_coding_block_size_minus3 + 3; ue(log2_diff_max_min_luma_coding_block_size, 0, 3); ctb_log2_size_y = min_cb_log2_size_y + current->log2_diff_max_min_luma_coding_block_size; min_cb_size_y = 1 << min_cb_log2_size_y; if (current->pic_width_in_luma_samples % min_cb_size_y || current->pic_height_in_luma_samples % min_cb_size_y) { av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid dimensions: %ux%u not divisible " "by MinCbSizeY = %u.\n", current->pic_width_in_luma_samples, current->pic_height_in_luma_samples, min_cb_size_y); return AVERROR_INVALIDDATA; } ue(log2_min_luma_transform_block_size_minus2, 0, min_cb_log2_size_y - 3); min_tb_log2_size_y = current->log2_min_luma_transform_block_size_minus2 + 2; ue(log2_diff_max_min_luma_transform_block_size, 0, FFMIN(ctb_log2_size_y, 5) - min_tb_log2_size_y); ue(max_transform_hierarchy_depth_inter, 0, ctb_log2_size_y - min_tb_log2_size_y); ue(max_transform_hierarchy_depth_intra, 0, ctb_log2_size_y - min_tb_log2_size_y); flag(scaling_list_enabled_flag); if (current->scaling_list_enabled_flag) { flag(sps_scaling_list_data_present_flag); if (current->sps_scaling_list_data_present_flag) CHECK(FUNC(scaling_list_data)(ctx, rw, ¤t->scaling_list)); } else { infer(sps_scaling_list_data_present_flag, 0); } flag(amp_enabled_flag); flag(sample_adaptive_offset_enabled_flag); flag(pcm_enabled_flag); if (current->pcm_enabled_flag) { u(4, pcm_sample_bit_depth_luma_minus1, 0, current->bit_depth_luma_minus8 + 8 - 1); u(4, pcm_sample_bit_depth_chroma_minus1, 0, current->bit_depth_chroma_minus8 + 8 - 1); ue(log2_min_pcm_luma_coding_block_size_minus3, FFMIN(min_cb_log2_size_y, 5) - 3, FFMIN(ctb_log2_size_y, 5) - 3); ue(log2_diff_max_min_pcm_luma_coding_block_size, 0, FFMIN(ctb_log2_size_y, 5) - (current->log2_min_pcm_luma_coding_block_size_minus3 + 3)); flag(pcm_loop_filter_disabled_flag); } ue(num_short_term_ref_pic_sets, 0, HEVC_MAX_SHORT_TERM_REF_PIC_SETS); for (i = 0; i < current->num_short_term_ref_pic_sets; i++) CHECK(FUNC(st_ref_pic_set)(ctx, rw, ¤t->st_ref_pic_set[i], i, current)); flag(long_term_ref_pics_present_flag); if (current->long_term_ref_pics_present_flag) { ue(num_long_term_ref_pics_sps, 0, HEVC_MAX_LONG_TERM_REF_PICS); for (i = 0; i < current->num_long_term_ref_pics_sps; i++) { u(current->log2_max_pic_order_cnt_lsb_minus4 + 4, lt_ref_pic_poc_lsb_sps[i], 0, MAX_UINT_BITS(current->log2_max_pic_order_cnt_lsb_minus4 + 4)); flag(used_by_curr_pic_lt_sps_flag[i]); } } flag(sps_temporal_mvp_enabled_flag); flag(strong_intra_smoothing_enabled_flag); flag(vui_parameters_present_flag); if (current->vui_parameters_present_flag) CHECK(FUNC(vui_parameters)(ctx, rw, ¤t->vui, current)); flag(sps_extension_present_flag); if (current->sps_extension_present_flag) { flag(sps_range_extension_flag); flag(sps_multilayer_extension_flag); flag(sps_3d_extension_flag); flag(sps_scc_extension_flag); u(4, sps_extension_4bits, 0, MAX_UINT_BITS(4)); } if (current->sps_range_extension_flag) CHECK(FUNC(sps_range_extension)(ctx, rw, current)); if (current->sps_multilayer_extension_flag) return AVERROR_PATCHWELCOME; if (current->sps_3d_extension_flag) return AVERROR_PATCHWELCOME; if (current->sps_scc_extension_flag) CHECK(FUNC(sps_scc_extension)(ctx, rw, current)); if (current->sps_extension_4bits) CHECK(FUNC(extension_data)(ctx, rw, ¤t->extension_data)); CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); return 0; } static int FUNC(pps_range_extension)(CodedBitstreamContext *ctx, RWContext *rw, H265RawPPS *current) { CodedBitstreamH265Context *h265 = ctx->priv_data; const H265RawSPS *sps = h265->active_sps; int err, i; if (current->transform_skip_enabled_flag) ue(log2_max_transform_skip_block_size_minus2, 0, 3); flag(cross_component_prediction_enabled_flag); flag(chroma_qp_offset_list_enabled_flag); if (current->chroma_qp_offset_list_enabled_flag) { ue(diff_cu_chroma_qp_offset_depth, 0, sps->log2_diff_max_min_luma_coding_block_size); ue(chroma_qp_offset_list_len_minus1, 0, 5); for (i = 0; i <= current->chroma_qp_offset_list_len_minus1; i++) { se(cb_qp_offset_list[i], -12, +12); se(cr_qp_offset_list[i], -12, +12); } } ue(log2_sao_offset_scale_luma, 0, FFMAX(0, sps->bit_depth_luma_minus8 - 2)); ue(log2_sao_offset_scale_chroma, 0, FFMAX(0, sps->bit_depth_chroma_minus8 - 2)); return 0; } static int FUNC(pps_scc_extension)(CodedBitstreamContext *ctx, RWContext *rw, H265RawPPS *current) { int err, comp, i; flag(pps_curr_pic_ref_enabled_flag); flag(residual_adaptive_colour_transform_enabled_flag); if (current->residual_adaptive_colour_transform_enabled_flag) { flag(pps_slice_act_qp_offsets_present_flag); se(pps_act_y_qp_offset_plus5, -7, +17); se(pps_act_cb_qp_offset_plus5, -7, +17); se(pps_act_cr_qp_offset_plus3, -9, +15); } else { infer(pps_slice_act_qp_offsets_present_flag, 0); infer(pps_act_y_qp_offset_plus5, 0); infer(pps_act_cb_qp_offset_plus5, 0); infer(pps_act_cr_qp_offset_plus3, 0); } flag(pps_palette_predictor_initializer_present_flag); if (current->pps_palette_predictor_initializer_present_flag) { ue(pps_num_palette_predictor_initializer, 0, 128); if (current->pps_num_palette_predictor_initializer > 0) { flag(monochrome_palette_flag); ue(luma_bit_depth_entry_minus8, 0, 8); if (!current->monochrome_palette_flag) ue(chroma_bit_depth_entry_minus8, 0, 8); for (comp = 0; comp < (current->monochrome_palette_flag ? 1 : 3); comp++) { int bit_depth = comp == 0 ? current->luma_bit_depth_entry_minus8 + 8 : current->chroma_bit_depth_entry_minus8 + 8; for (i = 0; i < current->pps_num_palette_predictor_initializer; i++) u(bit_depth, pps_palette_predictor_initializers[comp][i], 0, MAX_UINT_BITS(bit_depth)); } } } return 0; } static int FUNC(pps)(CodedBitstreamContext *ctx, RWContext *rw, H265RawPPS *current) { CodedBitstreamH265Context *h265 = ctx->priv_data; const H265RawSPS *sps; int err, i; HEADER("Picture Parameter Set"); CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, HEVC_NAL_PPS)); ue(pps_pic_parameter_set_id, 0, 63); ue(pps_seq_parameter_set_id, 0, 15); sps = h265->sps[current->pps_seq_parameter_set_id]; if (!sps) { av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n", current->pps_seq_parameter_set_id); return AVERROR_INVALIDDATA; } h265->active_sps = sps; flag(dependent_slice_segments_enabled_flag); flag(output_flag_present_flag); u(3, num_extra_slice_header_bits, 0, 7); flag(sign_data_hiding_enabled_flag); flag(cabac_init_present_flag); ue(num_ref_idx_l0_default_active_minus1, 0, 14); ue(num_ref_idx_l1_default_active_minus1, 0, 14); se(init_qp_minus26, -(26 + 6 * sps->bit_depth_luma_minus8), +25); flag(constrained_intra_pred_flag); flag(transform_skip_enabled_flag); flag(cu_qp_delta_enabled_flag); if (current->cu_qp_delta_enabled_flag) ue(diff_cu_qp_delta_depth, 0, sps->log2_diff_max_min_luma_coding_block_size); else infer(diff_cu_qp_delta_depth, 0); se(pps_cb_qp_offset, -12, +12); se(pps_cr_qp_offset, -12, +12); flag(pps_slice_chroma_qp_offsets_present_flag); flag(weighted_pred_flag); flag(weighted_bipred_flag); flag(transquant_bypass_enabled_flag); flag(tiles_enabled_flag); flag(entropy_coding_sync_enabled_flag); if (current->tiles_enabled_flag) { ue(num_tile_columns_minus1, 0, HEVC_MAX_TILE_COLUMNS); ue(num_tile_rows_minus1, 0, HEVC_MAX_TILE_ROWS); flag(uniform_spacing_flag); if (!current->uniform_spacing_flag) { for (i = 0; i < current->num_tile_columns_minus1; i++) ue(column_width_minus1[i], 0, sps->pic_width_in_luma_samples); for (i = 0; i < current->num_tile_rows_minus1; i++) ue(row_height_minus1[i], 0, sps->pic_height_in_luma_samples); } flag(loop_filter_across_tiles_enabled_flag); } else { infer(num_tile_columns_minus1, 0); infer(num_tile_rows_minus1, 0); } flag(pps_loop_filter_across_slices_enabled_flag); flag(deblocking_filter_control_present_flag); if (current->deblocking_filter_control_present_flag) { flag(deblocking_filter_override_enabled_flag); flag(pps_deblocking_filter_disabled_flag); if (!current->pps_deblocking_filter_disabled_flag) { se(pps_beta_offset_div2, -6, +6); se(pps_tc_offset_div2, -6, +6); } else { infer(pps_beta_offset_div2, 0); infer(pps_tc_offset_div2, 0); } } else { infer(deblocking_filter_override_enabled_flag, 0); infer(pps_deblocking_filter_disabled_flag, 0); infer(pps_beta_offset_div2, 0); infer(pps_tc_offset_div2, 0); } flag(pps_scaling_list_data_present_flag); if (current->pps_scaling_list_data_present_flag) CHECK(FUNC(scaling_list_data)(ctx, rw, ¤t->scaling_list)); flag(lists_modification_present_flag); ue(log2_parallel_merge_level_minus2, 0, (sps->log2_min_luma_coding_block_size_minus3 + 3 + sps->log2_diff_max_min_luma_coding_block_size - 2)); flag(slice_segment_header_extension_present_flag); flag(pps_extension_present_flag); if (current->pps_extension_present_flag) { flag(pps_range_extension_flag); flag(pps_multilayer_extension_flag); flag(pps_3d_extension_flag); flag(pps_scc_extension_flag); u(4, pps_extension_4bits, 0, MAX_UINT_BITS(4)); } if (current->pps_range_extension_flag) CHECK(FUNC(pps_range_extension)(ctx, rw, current)); if (current->pps_multilayer_extension_flag) return AVERROR_PATCHWELCOME; if (current->pps_3d_extension_flag) return AVERROR_PATCHWELCOME; if (current->pps_scc_extension_flag) CHECK(FUNC(pps_scc_extension)(ctx, rw, current)); if (current->pps_extension_4bits) CHECK(FUNC(extension_data)(ctx, rw, ¤t->extension_data)); CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); return 0; } static int FUNC(aud)(CodedBitstreamContext *ctx, RWContext *rw, H265RawAUD *current) { int err; HEADER("Access Unit Delimiter"); CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, HEVC_NAL_AUD)); u(3, pic_type, 0, 2); CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); return 0; } static int FUNC(ref_pic_lists_modification)(CodedBitstreamContext *ctx, RWContext *rw, H265RawSliceHeader *current, unsigned int num_pic_total_curr) { unsigned int entry_size; int err, i; entry_size = av_log2(num_pic_total_curr - 1) + 1; flag(ref_pic_list_modification_flag_l0); if (current->ref_pic_list_modification_flag_l0) { for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) u(entry_size, list_entry_l0[i], 0, num_pic_total_curr - 1); } if (current->slice_type == HEVC_SLICE_B) { flag(ref_pic_list_modification_flag_l1); if (current->ref_pic_list_modification_flag_l1) { for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) u(entry_size, list_entry_l1[i], 0, num_pic_total_curr - 1); } } return 0; } static int FUNC(pred_weight_table)(CodedBitstreamContext *ctx, RWContext *rw, H265RawSliceHeader *current) { CodedBitstreamH265Context *h265 = ctx->priv_data; const H265RawSPS *sps = h265->active_sps; int err, i, j; int chroma = !sps->separate_colour_plane_flag && sps->chroma_format_idc != 0; ue(luma_log2_weight_denom, 0, 7); if (chroma) se(delta_chroma_log2_weight_denom, -7, 7); else infer(delta_chroma_log2_weight_denom, 0); for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) { if (1 /* is not same POC and same layer_id */) flag(luma_weight_l0_flag[i]); else infer(luma_weight_l0_flag[i], 0); } if (chroma) { for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) { if (1 /* is not same POC and same layer_id */) flag(chroma_weight_l0_flag[i]); else infer(chroma_weight_l0_flag[i], 0); } } for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) { if (current->luma_weight_l0_flag[i]) { se(delta_luma_weight_l0[i], -128, +127); se(luma_offset_l0[i], -(1 << (sps->bit_depth_luma_minus8 + 8 - 1)), ((1 << (sps->bit_depth_luma_minus8 + 8 - 1)) - 1)); } else { infer(delta_luma_weight_l0[i], 0); infer(luma_offset_l0[i], 0); } if (current->chroma_weight_l0_flag[i]) { for (j = 0; j < 2; j++) { se(delta_chroma_weight_l0[i][j], -128, +127); se(chroma_offset_l0[i][j], -(4 << (sps->bit_depth_chroma_minus8 + 8 - 1)), ((4 << (sps->bit_depth_chroma_minus8 + 8 - 1)) - 1)); } } else { for (j = 0; j < 2; j++) { infer(delta_chroma_weight_l0[i][j], 0); infer(chroma_offset_l0[i][j], 0); } } } if (current->slice_type == HEVC_SLICE_B) { for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) { if (1 /* RefPicList1[i] is not CurrPic, nor is it in a different layer */) flag(luma_weight_l1_flag[i]); else infer(luma_weight_l1_flag[i], 0); } if (chroma) { for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) { if (1 /* RefPicList1[i] is not CurrPic, nor is it in a different layer */) flag(chroma_weight_l1_flag[i]); else infer(chroma_weight_l1_flag[i], 0); } } for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) { if (current->luma_weight_l1_flag[i]) { se(delta_luma_weight_l1[i], -128, +127); se(luma_offset_l1[i], -(1 << (sps->bit_depth_luma_minus8 + 8 - 1)), ((1 << (sps->bit_depth_luma_minus8 + 8 - 1)) - 1)); } else { infer(delta_luma_weight_l1[i], 0); infer(luma_offset_l1[i], 0); } if (current->chroma_weight_l1_flag[i]) { for (j = 0; j < 2; j++) { se(delta_chroma_weight_l1[i][j], -128, +127); se(chroma_offset_l1[i][j], -(4 << (sps->bit_depth_chroma_minus8 + 8 - 1)), ((4 << (sps->bit_depth_chroma_minus8 + 8 - 1)) - 1)); } } else { for (j = 0; j < 2; j++) { infer(delta_chroma_weight_l1[i][j], 0); infer(chroma_offset_l1[i][j], 0); } } } } return 0; } static int FUNC(slice_segment_header)(CodedBitstreamContext *ctx, RWContext *rw, H265RawSliceHeader *current) { CodedBitstreamH265Context *h265 = ctx->priv_data; const H265RawSPS *sps; const H265RawPPS *pps; unsigned int min_cb_log2_size_y, ctb_log2_size_y, ctb_size_y; unsigned int pic_width_in_ctbs_y, pic_height_in_ctbs_y, pic_size_in_ctbs_y; unsigned int num_pic_total_curr = 0; int err, i; HEADER("Slice Segment Header"); CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, -1)); flag(first_slice_segment_in_pic_flag); if (current->nal_unit_header.nal_unit_type >= HEVC_NAL_BLA_W_LP && current->nal_unit_header.nal_unit_type <= HEVC_NAL_IRAP_VCL23) flag(no_output_of_prior_pics_flag); ue(slice_pic_parameter_set_id, 0, 63); pps = h265->pps[current->slice_pic_parameter_set_id]; if (!pps) { av_log(ctx->log_ctx, AV_LOG_ERROR, "PPS id %d not available.\n", current->slice_pic_parameter_set_id); return AVERROR_INVALIDDATA; } h265->active_pps = pps; sps = h265->sps[pps->pps_seq_parameter_set_id]; if (!sps) { av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n", pps->pps_seq_parameter_set_id); return AVERROR_INVALIDDATA; } h265->active_sps = sps; min_cb_log2_size_y = sps->log2_min_luma_coding_block_size_minus3 + 3; ctb_log2_size_y = min_cb_log2_size_y + sps->log2_diff_max_min_luma_coding_block_size; ctb_size_y = 1 << ctb_log2_size_y; pic_width_in_ctbs_y = (sps->pic_width_in_luma_samples + ctb_size_y - 1) / ctb_size_y; pic_height_in_ctbs_y = (sps->pic_height_in_luma_samples + ctb_size_y - 1) / ctb_size_y; pic_size_in_ctbs_y = pic_width_in_ctbs_y * pic_height_in_ctbs_y; if (!current->first_slice_segment_in_pic_flag) { unsigned int address_size = av_log2(pic_size_in_ctbs_y - 1) + 1; if (pps->dependent_slice_segments_enabled_flag) flag(dependent_slice_segment_flag); else infer(dependent_slice_segment_flag, 0); u(address_size, slice_segment_address, 0, pic_size_in_ctbs_y - 1); } else { infer(dependent_slice_segment_flag, 0); } if (!current->dependent_slice_segment_flag) { for (i = 0; i < pps->num_extra_slice_header_bits; i++) flag(slice_reserved_flag[i]); ue(slice_type, 0, 2); if (pps->output_flag_present_flag) flag(pic_output_flag); if (sps->separate_colour_plane_flag) u(2, colour_plane_id, 0, 2); if (current->nal_unit_header.nal_unit_type != HEVC_NAL_IDR_W_RADL && current->nal_unit_header.nal_unit_type != HEVC_NAL_IDR_N_LP) { const H265RawSTRefPicSet *rps; u(sps->log2_max_pic_order_cnt_lsb_minus4 + 4, slice_pic_order_cnt_lsb, 0, MAX_UINT_BITS(sps->log2_max_pic_order_cnt_lsb_minus4 + 4)); flag(short_term_ref_pic_set_sps_flag); if (!current->short_term_ref_pic_set_sps_flag) { CHECK(FUNC(st_ref_pic_set)(ctx, rw, ¤t->short_term_ref_pic_set, sps->num_short_term_ref_pic_sets, sps)); rps = ¤t->short_term_ref_pic_set; } else if (sps->num_short_term_ref_pic_sets > 1) { unsigned int idx_size = av_log2(sps->num_short_term_ref_pic_sets - 1) + 1; u(idx_size, short_term_ref_pic_set_idx, 0, sps->num_short_term_ref_pic_sets - 1); rps = &sps->st_ref_pic_set[current->short_term_ref_pic_set_idx]; } else { infer(short_term_ref_pic_set_idx, 0); rps = &sps->st_ref_pic_set[0]; } num_pic_total_curr = 0; for (i = 0; i < rps->num_negative_pics; i++) if (rps->used_by_curr_pic_s0_flag[i]) ++num_pic_total_curr; for (i = 0; i < rps->num_positive_pics; i++) if (rps->used_by_curr_pic_s1_flag[i]) ++num_pic_total_curr; if (sps->long_term_ref_pics_present_flag) { unsigned int idx_size; if (sps->num_long_term_ref_pics_sps > 0) { ue(num_long_term_sps, 0, sps->num_long_term_ref_pics_sps); idx_size = av_log2(sps->num_long_term_ref_pics_sps - 1) + 1; } else { infer(num_long_term_sps, 0); idx_size = 0; } ue(num_long_term_pics, 0, HEVC_MAX_LONG_TERM_REF_PICS); for (i = 0; i < current->num_long_term_sps + current->num_long_term_pics; i++) { if (i < current->num_long_term_sps) { if (sps->num_long_term_ref_pics_sps > 1) u(idx_size, lt_idx_sps[i], 0, sps->num_long_term_ref_pics_sps - 1); if (sps->used_by_curr_pic_lt_sps_flag[current->lt_idx_sps[i]]) ++num_pic_total_curr; } else { u(sps->log2_max_pic_order_cnt_lsb_minus4 + 4, poc_lsb_lt[i], 0, MAX_UINT_BITS(sps->log2_max_pic_order_cnt_lsb_minus4 + 4)); flag(used_by_curr_pic_lt_flag[i]); if (current->used_by_curr_pic_lt_flag[i]) ++num_pic_total_curr; } flag(delta_poc_msb_present_flag[i]); if (current->delta_poc_msb_present_flag[i]) ue(delta_poc_msb_cycle_lt[i], 0, UINT32_MAX - 1); else infer(delta_poc_msb_cycle_lt[i], 0); } } if (sps->sps_temporal_mvp_enabled_flag) flag(slice_temporal_mvp_enabled_flag); else infer(slice_temporal_mvp_enabled_flag, 0); if (pps->pps_curr_pic_ref_enabled_flag) ++num_pic_total_curr; } if (sps->sample_adaptive_offset_enabled_flag) { flag(slice_sao_luma_flag); if (!sps->separate_colour_plane_flag && sps->chroma_format_idc != 0) flag(slice_sao_chroma_flag); else infer(slice_sao_chroma_flag, 0); } else { infer(slice_sao_luma_flag, 0); infer(slice_sao_chroma_flag, 0); } if (current->slice_type == HEVC_SLICE_P || current->slice_type == HEVC_SLICE_B) { flag(num_ref_idx_active_override_flag); if (current->num_ref_idx_active_override_flag) { ue(num_ref_idx_l0_active_minus1, 0, 14); if (current->slice_type == HEVC_SLICE_B) ue(num_ref_idx_l1_active_minus1, 0, 14); else infer(num_ref_idx_l1_active_minus1, pps->num_ref_idx_l1_default_active_minus1); } else { infer(num_ref_idx_l0_active_minus1, pps->num_ref_idx_l0_default_active_minus1); infer(num_ref_idx_l1_active_minus1, pps->num_ref_idx_l1_default_active_minus1); } if (pps->lists_modification_present_flag && num_pic_total_curr > 1) CHECK(FUNC(ref_pic_lists_modification)(ctx, rw, current, num_pic_total_curr)); if (current->slice_type == HEVC_SLICE_B) flag(mvd_l1_zero_flag); if (pps->cabac_init_present_flag) flag(cabac_init_flag); else infer(cabac_init_flag, 0); if (current->slice_temporal_mvp_enabled_flag) { if (current->slice_type == HEVC_SLICE_B) flag(collocated_from_l0_flag); else infer(collocated_from_l0_flag, 1); if (current->collocated_from_l0_flag) { if (current->num_ref_idx_l0_active_minus1 > 0) ue(collocated_ref_idx, 0, current->num_ref_idx_l0_active_minus1); else infer(collocated_ref_idx, 0); } else { if (current->num_ref_idx_l1_active_minus1 > 0) ue(collocated_ref_idx, 0, current->num_ref_idx_l1_active_minus1); else infer(collocated_ref_idx, 0); } } if ((pps->weighted_pred_flag && current->slice_type == HEVC_SLICE_P) || (pps->weighted_bipred_flag && current->slice_type == HEVC_SLICE_B)) CHECK(FUNC(pred_weight_table)(ctx, rw, current)); ue(five_minus_max_num_merge_cand, 0, 4); if (sps->motion_vector_resolution_control_idc == 2) flag(use_integer_mv_flag); else infer(use_integer_mv_flag, sps->motion_vector_resolution_control_idc); } se(slice_qp_delta, - 6 * sps->bit_depth_luma_minus8 - (pps->init_qp_minus26 + 26), + 51 - (pps->init_qp_minus26 + 26)); if (pps->pps_slice_chroma_qp_offsets_present_flag) { se(slice_cb_qp_offset, -12, +12); se(slice_cr_qp_offset, -12, +12); } else { infer(slice_cb_qp_offset, 0); infer(slice_cr_qp_offset, 0); } if (pps->pps_slice_act_qp_offsets_present_flag) { se(slice_act_y_qp_offset, -12 - (pps->pps_act_y_qp_offset_plus5 - 5), +12 - (pps->pps_act_y_qp_offset_plus5 - 5)); se(slice_act_cb_qp_offset, -12 - (pps->pps_act_cb_qp_offset_plus5 - 5), +12 - (pps->pps_act_cb_qp_offset_plus5 - 5)); se(slice_act_cr_qp_offset, -12 - (pps->pps_act_cr_qp_offset_plus3 - 3), +12 - (pps->pps_act_cr_qp_offset_plus3 - 3)); } else { infer(slice_act_y_qp_offset, 0); infer(slice_act_cb_qp_offset, 0); infer(slice_act_cr_qp_offset, 0); } if (pps->chroma_qp_offset_list_enabled_flag) flag(cu_chroma_qp_offset_enabled_flag); else infer(cu_chroma_qp_offset_enabled_flag, 0); if (pps->deblocking_filter_override_enabled_flag) flag(deblocking_filter_override_flag); else infer(deblocking_filter_override_flag, 0); if (current->deblocking_filter_override_flag) { flag(slice_deblocking_filter_disabled_flag); if (!current->slice_deblocking_filter_disabled_flag) { se(slice_beta_offset_div2, -6, +6); se(slice_tc_offset_div2, -6, +6); } else { infer(slice_beta_offset_div2, pps->pps_beta_offset_div2); infer(slice_tc_offset_div2, pps->pps_tc_offset_div2); } } else { infer(slice_deblocking_filter_disabled_flag, pps->pps_deblocking_filter_disabled_flag); infer(slice_beta_offset_div2, pps->pps_beta_offset_div2); infer(slice_tc_offset_div2, pps->pps_tc_offset_div2); } if (pps->pps_loop_filter_across_slices_enabled_flag && (current->slice_sao_luma_flag || current->slice_sao_chroma_flag || !current->slice_deblocking_filter_disabled_flag)) flag(slice_loop_filter_across_slices_enabled_flag); else infer(slice_loop_filter_across_slices_enabled_flag, pps->pps_loop_filter_across_slices_enabled_flag); } if (pps->tiles_enabled_flag || pps->entropy_coding_sync_enabled_flag) { unsigned int num_entry_point_offsets_limit; if (!pps->tiles_enabled_flag && pps->entropy_coding_sync_enabled_flag) num_entry_point_offsets_limit = pic_height_in_ctbs_y - 1; else if (pps->tiles_enabled_flag && !pps->entropy_coding_sync_enabled_flag) num_entry_point_offsets_limit = (pps->num_tile_columns_minus1 + 1) * (pps->num_tile_rows_minus1 + 1); else num_entry_point_offsets_limit = (pps->num_tile_columns_minus1 + 1) * pic_height_in_ctbs_y - 1; ue(num_entry_point_offsets, 0, num_entry_point_offsets_limit); if (current->num_entry_point_offsets > HEVC_MAX_ENTRY_POINT_OFFSETS) { av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many entry points: " "%"PRIu16".\n", current->num_entry_point_offsets); return AVERROR_PATCHWELCOME; } if (current->num_entry_point_offsets > 0) { ue(offset_len_minus1, 0, 31); for (i = 0; i < current->num_entry_point_offsets; i++) u(current->offset_len_minus1 + 1, entry_point_offset_minus1[i], 0, MAX_UINT_BITS(current->offset_len_minus1 + 1)); } } if (pps->slice_segment_header_extension_present_flag) { ue(slice_segment_header_extension_length, 0, 256); for (i = 0; i < current->slice_segment_header_extension_length; i++) u(8, slice_segment_header_extension_data_byte[i], 0x00, 0xff); } CHECK(FUNC(byte_alignment)(ctx, rw)); return 0; }