| /* | |
| * 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; | |
| fixed(1, rbsp_stop_one_bit, 1); | |
| while (byte_alignment(rw) != 0) | |
| fixed(1, rbsp_alignment_zero_bit, 0); | |
| return 0; | |
| } | |
| static int FUNC(nal_unit_header)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawNALUnitHeader *current, | |
| uint32_t valid_type_mask) | |
| { | |
| int err; | |
| fixed(1, forbidden_zero_bit, 0); | |
| ub(2, nal_ref_idc); | |
| ub(5, nal_unit_type); | |
| if (!(1 << current->nal_unit_type & valid_type_mask)) { | |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid NAL unit type %d.\n", | |
| current->nal_unit_type); | |
| return AVERROR_INVALIDDATA; | |
| } | |
| if (current->nal_unit_type == 14 || | |
| current->nal_unit_type == 20 || | |
| current->nal_unit_type == 21) { | |
| if (current->nal_unit_type != 21) | |
| flag(svc_extension_flag); | |
| else | |
| flag(avc_3d_extension_flag); | |
| if (current->svc_extension_flag) { | |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "SVC not supported.\n"); | |
| return AVERROR_PATCHWELCOME; | |
| } else if (current->avc_3d_extension_flag) { | |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "3DAVC not supported.\n"); | |
| return AVERROR_PATCHWELCOME; | |
| } else { | |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "MVC not supported.\n"); | |
| return AVERROR_PATCHWELCOME; | |
| } | |
| } | |
| return 0; | |
| } | |
| static int FUNC(scaling_list)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawScalingList *current, | |
| int size_of_scaling_list) | |
| { | |
| int err, i, scale; | |
| scale = 8; | |
| for (i = 0; i < size_of_scaling_list; i++) { | |
| ses(delta_scale[i], -128, +127, 1, i); | |
| scale = (scale + current->delta_scale[i] + 256) % 256; | |
| if (scale == 0) | |
| break; | |
| } | |
| return 0; | |
| } | |
| static int FUNC(hrd_parameters)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawHRD *current) | |
| { | |
| int err, i; | |
| ue(cpb_cnt_minus1, 0, 31); | |
| ub(4, bit_rate_scale); | |
| ub(4, cpb_size_scale); | |
| for (i = 0; i <= current->cpb_cnt_minus1; i++) { | |
| ues(bit_rate_value_minus1[i], 0, UINT32_MAX - 1, 1, i); | |
| ues(cpb_size_value_minus1[i], 0, UINT32_MAX - 1, 1, i); | |
| flags(cbr_flag[i], 1, i); | |
| } | |
| ub(5, initial_cpb_removal_delay_length_minus1); | |
| ub(5, cpb_removal_delay_length_minus1); | |
| ub(5, dpb_output_delay_length_minus1); | |
| ub(5, time_offset_length); | |
| return 0; | |
| } | |
| static int FUNC(vui_parameters)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawVUI *current, H264RawSPS *sps) | |
| { | |
| int err; | |
| flag(aspect_ratio_info_present_flag); | |
| if (current->aspect_ratio_info_present_flag) { | |
| ub(8, aspect_ratio_idc); | |
| if (current->aspect_ratio_idc == 255) { | |
| ub(16, sar_width); | |
| ub(16, sar_height); | |
| } | |
| } 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) { | |
| ub(3, video_format); | |
| flag(video_full_range_flag); | |
| flag(colour_description_present_flag); | |
| if (current->colour_description_present_flag) { | |
| ub(8, colour_primaries); | |
| ub(8, transfer_characteristics); | |
| ub(8, matrix_coefficients); | |
| } 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(timing_info_present_flag); | |
| if (current->timing_info_present_flag) { | |
| u(32, num_units_in_tick, 1, UINT32_MAX); | |
| u(32, time_scale, 1, UINT32_MAX); | |
| flag(fixed_frame_rate_flag); | |
| } else { | |
| infer(fixed_frame_rate_flag, 0); | |
| } | |
| flag(nal_hrd_parameters_present_flag); | |
| if (current->nal_hrd_parameters_present_flag) | |
| CHECK(FUNC(hrd_parameters)(ctx, rw, ¤t->nal_hrd_parameters)); | |
| flag(vcl_hrd_parameters_present_flag); | |
| if (current->vcl_hrd_parameters_present_flag) | |
| CHECK(FUNC(hrd_parameters)(ctx, rw, ¤t->vcl_hrd_parameters)); | |
| if (current->nal_hrd_parameters_present_flag || | |
| current->vcl_hrd_parameters_present_flag) | |
| flag(low_delay_hrd_flag); | |
| else | |
| infer(low_delay_hrd_flag, 1 - current->fixed_frame_rate_flag); | |
| flag(pic_struct_present_flag); | |
| flag(bitstream_restriction_flag); | |
| if (current->bitstream_restriction_flag) { | |
| flag(motion_vectors_over_pic_boundaries_flag); | |
| ue(max_bytes_per_pic_denom, 0, 16); | |
| ue(max_bits_per_mb_denom, 0, 16); | |
| // The current version of the standard constrains this to be in | |
| // [0,15], but older versions allow 16. | |
| ue(log2_max_mv_length_horizontal, 0, 16); | |
| ue(log2_max_mv_length_vertical, 0, 16); | |
| ue(max_num_reorder_frames, 0, H264_MAX_DPB_FRAMES); | |
| ue(max_dec_frame_buffering, 0, H264_MAX_DPB_FRAMES); | |
| } else { | |
| infer(motion_vectors_over_pic_boundaries_flag, 1); | |
| infer(max_bytes_per_pic_denom, 2); | |
| infer(max_bits_per_mb_denom, 1); | |
| infer(log2_max_mv_length_horizontal, 15); | |
| infer(log2_max_mv_length_vertical, 15); | |
| if ((sps->profile_idc == 44 || sps->profile_idc == 86 || | |
| sps->profile_idc == 100 || sps->profile_idc == 110 || | |
| sps->profile_idc == 122 || sps->profile_idc == 244) && | |
| sps->constraint_set3_flag) { | |
| infer(max_num_reorder_frames, 0); | |
| infer(max_dec_frame_buffering, 0); | |
| } else { | |
| infer(max_num_reorder_frames, H264_MAX_DPB_FRAMES); | |
| infer(max_dec_frame_buffering, H264_MAX_DPB_FRAMES); | |
| } | |
| } | |
| return 0; | |
| } | |
| static int FUNC(vui_parameters_default)(CodedBitstreamContext *ctx, | |
| RWContext *rw, H264RawVUI *current, | |
| H264RawSPS *sps) | |
| { | |
| infer(aspect_ratio_idc, 0); | |
| infer(video_format, 5); | |
| infer(video_full_range_flag, 0); | |
| infer(colour_primaries, 2); | |
| infer(transfer_characteristics, 2); | |
| infer(matrix_coefficients, 2); | |
| infer(chroma_sample_loc_type_top_field, 0); | |
| infer(chroma_sample_loc_type_bottom_field, 0); | |
| infer(fixed_frame_rate_flag, 0); | |
| infer(low_delay_hrd_flag, 1); | |
| infer(pic_struct_present_flag, 0); | |
| infer(motion_vectors_over_pic_boundaries_flag, 1); | |
| infer(max_bytes_per_pic_denom, 2); | |
| infer(max_bits_per_mb_denom, 1); | |
| infer(log2_max_mv_length_horizontal, 15); | |
| infer(log2_max_mv_length_vertical, 15); | |
| if ((sps->profile_idc == 44 || sps->profile_idc == 86 || | |
| sps->profile_idc == 100 || sps->profile_idc == 110 || | |
| sps->profile_idc == 122 || sps->profile_idc == 244) && | |
| sps->constraint_set3_flag) { | |
| infer(max_num_reorder_frames, 0); | |
| infer(max_dec_frame_buffering, 0); | |
| } else { | |
| infer(max_num_reorder_frames, H264_MAX_DPB_FRAMES); | |
| infer(max_dec_frame_buffering, H264_MAX_DPB_FRAMES); | |
| } | |
| return 0; | |
| } | |
| static int FUNC(sps)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawSPS *current) | |
| { | |
| int err, i; | |
| HEADER("Sequence Parameter Set"); | |
| CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, | |
| 1 << H264_NAL_SPS)); | |
| ub(8, profile_idc); | |
| flag(constraint_set0_flag); | |
| flag(constraint_set1_flag); | |
| flag(constraint_set2_flag); | |
| flag(constraint_set3_flag); | |
| flag(constraint_set4_flag); | |
| flag(constraint_set5_flag); | |
| u(2, reserved_zero_2bits, 0, 0); | |
| ub(8, level_idc); | |
| ue(seq_parameter_set_id, 0, 31); | |
| if (current->profile_idc == 100 || current->profile_idc == 110 || | |
| current->profile_idc == 122 || current->profile_idc == 244 || | |
| current->profile_idc == 44 || current->profile_idc == 83 || | |
| current->profile_idc == 86 || current->profile_idc == 118 || | |
| current->profile_idc == 128 || current->profile_idc == 138) { | |
| 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(bit_depth_luma_minus8, 0, 6); | |
| ue(bit_depth_chroma_minus8, 0, 6); | |
| flag(qpprime_y_zero_transform_bypass_flag); | |
| flag(seq_scaling_matrix_present_flag); | |
| if (current->seq_scaling_matrix_present_flag) { | |
| for (i = 0; i < ((current->chroma_format_idc != 3) ? 8 : 12); i++) { | |
| flags(seq_scaling_list_present_flag[i], 1, i); | |
| if (current->seq_scaling_list_present_flag[i]) { | |
| if (i < 6) | |
| CHECK(FUNC(scaling_list)(ctx, rw, | |
| ¤t->scaling_list_4x4[i], | |
| 16)); | |
| else | |
| CHECK(FUNC(scaling_list)(ctx, rw, | |
| ¤t->scaling_list_8x8[i - 6], | |
| 64)); | |
| } | |
| } | |
| } | |
| } else { | |
| infer(chroma_format_idc, current->profile_idc == 183 ? 0 : 1); | |
| infer(separate_colour_plane_flag, 0); | |
| infer(bit_depth_luma_minus8, 0); | |
| infer(bit_depth_chroma_minus8, 0); | |
| } | |
| ue(log2_max_frame_num_minus4, 0, 12); | |
| ue(pic_order_cnt_type, 0, 2); | |
| if (current->pic_order_cnt_type == 0) { | |
| ue(log2_max_pic_order_cnt_lsb_minus4, 0, 12); | |
| } else if (current->pic_order_cnt_type == 1) { | |
| flag(delta_pic_order_always_zero_flag); | |
| se(offset_for_non_ref_pic, INT32_MIN + 1, INT32_MAX); | |
| se(offset_for_top_to_bottom_field, INT32_MIN + 1, INT32_MAX); | |
| ue(num_ref_frames_in_pic_order_cnt_cycle, 0, 255); | |
| for (i = 0; i < current->num_ref_frames_in_pic_order_cnt_cycle; i++) | |
| ses(offset_for_ref_frame[i], INT32_MIN + 1, INT32_MAX, 1, i); | |
| } | |
| ue(max_num_ref_frames, 0, H264_MAX_DPB_FRAMES); | |
| flag(gaps_in_frame_num_allowed_flag); | |
| ue(pic_width_in_mbs_minus1, 0, H264_MAX_MB_WIDTH); | |
| ue(pic_height_in_map_units_minus1, 0, H264_MAX_MB_HEIGHT); | |
| flag(frame_mbs_only_flag); | |
| if (!current->frame_mbs_only_flag) | |
| flag(mb_adaptive_frame_field_flag); | |
| flag(direct_8x8_inference_flag); | |
| flag(frame_cropping_flag); | |
| if (current->frame_cropping_flag) { | |
| ue(frame_crop_left_offset, 0, H264_MAX_WIDTH); | |
| ue(frame_crop_right_offset, 0, H264_MAX_WIDTH); | |
| ue(frame_crop_top_offset, 0, H264_MAX_HEIGHT); | |
| ue(frame_crop_bottom_offset, 0, H264_MAX_HEIGHT); | |
| } | |
| flag(vui_parameters_present_flag); | |
| if (current->vui_parameters_present_flag) | |
| CHECK(FUNC(vui_parameters)(ctx, rw, ¤t->vui, current)); | |
| else | |
| CHECK(FUNC(vui_parameters_default)(ctx, rw, ¤t->vui, current)); | |
| CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); | |
| return 0; | |
| } | |
| static int FUNC(sps_extension)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawSPSExtension *current) | |
| { | |
| int err; | |
| HEADER("Sequence Parameter Set Extension"); | |
| CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, | |
| 1 << H264_NAL_SPS_EXT)); | |
| ue(seq_parameter_set_id, 0, 31); | |
| ue(aux_format_idc, 0, 3); | |
| if (current->aux_format_idc != 0) { | |
| int bits; | |
| ue(bit_depth_aux_minus8, 0, 4); | |
| flag(alpha_incr_flag); | |
| bits = current->bit_depth_aux_minus8 + 9; | |
| ub(bits, alpha_opaque_value); | |
| ub(bits, alpha_transparent_value); | |
| } | |
| flag(additional_extension_flag); | |
| CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); | |
| return 0; | |
| } | |
| static int FUNC(pps)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawPPS *current) | |
| { | |
| CodedBitstreamH264Context *h264 = ctx->priv_data; | |
| const H264RawSPS *sps; | |
| int err, i; | |
| HEADER("Picture Parameter Set"); | |
| CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, | |
| 1 << H264_NAL_PPS)); | |
| ue(pic_parameter_set_id, 0, 255); | |
| ue(seq_parameter_set_id, 0, 31); | |
| sps = h264->sps[current->seq_parameter_set_id]; | |
| if (!sps) { | |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n", | |
| current->seq_parameter_set_id); | |
| return AVERROR_INVALIDDATA; | |
| } | |
| flag(entropy_coding_mode_flag); | |
| flag(bottom_field_pic_order_in_frame_present_flag); | |
| ue(num_slice_groups_minus1, 0, 7); | |
| if (current->num_slice_groups_minus1 > 0) { | |
| unsigned int pic_size; | |
| int iGroup; | |
| pic_size = (sps->pic_width_in_mbs_minus1 + 1) * | |
| (sps->pic_height_in_map_units_minus1 + 1); | |
| ue(slice_group_map_type, 0, 6); | |
| if (current->slice_group_map_type == 0) { | |
| for (iGroup = 0; iGroup <= current->num_slice_groups_minus1; iGroup++) | |
| ues(run_length_minus1[iGroup], 0, pic_size - 1, 1, iGroup); | |
| } else if (current->slice_group_map_type == 2) { | |
| for (iGroup = 0; iGroup < current->num_slice_groups_minus1; iGroup++) { | |
| ues(top_left[iGroup], 0, pic_size - 1, 1, iGroup); | |
| ues(bottom_right[iGroup], | |
| current->top_left[iGroup], pic_size - 1, 1, iGroup); | |
| } | |
| } else if (current->slice_group_map_type == 3 || | |
| current->slice_group_map_type == 4 || | |
| current->slice_group_map_type == 5) { | |
| flag(slice_group_change_direction_flag); | |
| ue(slice_group_change_rate_minus1, 0, pic_size - 1); | |
| } else if (current->slice_group_map_type == 6) { | |
| ue(pic_size_in_map_units_minus1, pic_size - 1, pic_size - 1); | |
| allocate(current->slice_group_id, | |
| current->pic_size_in_map_units_minus1 + 1); | |
| for (i = 0; i <= current->pic_size_in_map_units_minus1; i++) | |
| us(av_log2(2 * current->num_slice_groups_minus1 + 1), | |
| slice_group_id[i], 0, current->num_slice_groups_minus1, 1, i); | |
| } | |
| } | |
| ue(num_ref_idx_l0_default_active_minus1, 0, 31); | |
| ue(num_ref_idx_l1_default_active_minus1, 0, 31); | |
| flag(weighted_pred_flag); | |
| u(2, weighted_bipred_idc, 0, 2); | |
| se(pic_init_qp_minus26, -26 - 6 * sps->bit_depth_luma_minus8, +25); | |
| se(pic_init_qs_minus26, -26, +25); | |
| se(chroma_qp_index_offset, -12, +12); | |
| flag(deblocking_filter_control_present_flag); | |
| flag(constrained_intra_pred_flag); | |
| flag(redundant_pic_cnt_present_flag); | |
| if (more_rbsp_data(current->more_rbsp_data)) | |
| { | |
| flag(transform_8x8_mode_flag); | |
| flag(pic_scaling_matrix_present_flag); | |
| if (current->pic_scaling_matrix_present_flag) { | |
| for (i = 0; i < 6 + (((sps->chroma_format_idc != 3) ? 2 : 6) * | |
| current->transform_8x8_mode_flag); i++) { | |
| flags(pic_scaling_list_present_flag[i], 1, i); | |
| if (current->pic_scaling_list_present_flag[i]) { | |
| if (i < 6) | |
| CHECK(FUNC(scaling_list)(ctx, rw, | |
| ¤t->scaling_list_4x4[i], | |
| 16)); | |
| else | |
| CHECK(FUNC(scaling_list)(ctx, rw, | |
| ¤t->scaling_list_8x8[i - 6], | |
| 64)); | |
| } | |
| } | |
| } | |
| se(second_chroma_qp_index_offset, -12, +12); | |
| } else { | |
| infer(transform_8x8_mode_flag, 0); | |
| infer(pic_scaling_matrix_present_flag, 0); | |
| infer(second_chroma_qp_index_offset, current->chroma_qp_index_offset); | |
| } | |
| CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); | |
| return 0; | |
| } | |
| SEI_FUNC(sei_buffering_period, (CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawSEIBufferingPeriod *current, | |
| SEIMessageState *sei)) | |
| { | |
| CodedBitstreamH264Context *h264 = ctx->priv_data; | |
| const H264RawSPS *sps; | |
| int err, i, length; | |
| HEADER("Buffering Period"); | |
| ue(seq_parameter_set_id, 0, 31); | |
| sps = h264->sps[current->seq_parameter_set_id]; | |
| if (!sps) { | |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n", | |
| current->seq_parameter_set_id); | |
| return AVERROR_INVALIDDATA; | |
| } | |
| h264->active_sps = sps; | |
| if (sps->vui.nal_hrd_parameters_present_flag) { | |
| for (i = 0; i <= sps->vui.nal_hrd_parameters.cpb_cnt_minus1; i++) { | |
| length = sps->vui.nal_hrd_parameters.initial_cpb_removal_delay_length_minus1 + 1; | |
| xu(length, initial_cpb_removal_delay[SchedSelIdx], | |
| current->nal.initial_cpb_removal_delay[i], | |
| 1, MAX_UINT_BITS(length), 1, i); | |
| xu(length, initial_cpb_removal_delay_offset[SchedSelIdx], | |
| current->nal.initial_cpb_removal_delay_offset[i], | |
| 0, MAX_UINT_BITS(length), 1, i); | |
| } | |
| } | |
| if (sps->vui.vcl_hrd_parameters_present_flag) { | |
| for (i = 0; i <= sps->vui.vcl_hrd_parameters.cpb_cnt_minus1; i++) { | |
| length = sps->vui.vcl_hrd_parameters.initial_cpb_removal_delay_length_minus1 + 1; | |
| xu(length, initial_cpb_removal_delay[SchedSelIdx], | |
| current->vcl.initial_cpb_removal_delay[i], | |
| 1, MAX_UINT_BITS(length), 1, i); | |
| xu(length, initial_cpb_removal_delay_offset[SchedSelIdx], | |
| current->vcl.initial_cpb_removal_delay_offset[i], | |
| 0, MAX_UINT_BITS(length), 1, i); | |
| } | |
| } | |
| return 0; | |
| } | |
| static int FUNC(sei_pic_timestamp)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawSEIPicTimestamp *current, | |
| const H264RawSPS *sps) | |
| { | |
| uint8_t time_offset_length; | |
| int err; | |
| u(2, ct_type, 0, 2); | |
| flag(nuit_field_based_flag); | |
| u(5, counting_type, 0, 6); | |
| flag(full_timestamp_flag); | |
| flag(discontinuity_flag); | |
| flag(cnt_dropped_flag); | |
| ub(8, n_frames); | |
| if (current->full_timestamp_flag) { | |
| u(6, seconds_value, 0, 59); | |
| u(6, minutes_value, 0, 59); | |
| u(5, hours_value, 0, 23); | |
| } else { | |
| flag(seconds_flag); | |
| if (current->seconds_flag) { | |
| u(6, seconds_value, 0, 59); | |
| flag(minutes_flag); | |
| if (current->minutes_flag) { | |
| u(6, minutes_value, 0, 59); | |
| flag(hours_flag); | |
| if (current->hours_flag) | |
| u(5, hours_value, 0, 23); | |
| } | |
| } | |
| } | |
| if (sps->vui.nal_hrd_parameters_present_flag) | |
| time_offset_length = sps->vui.nal_hrd_parameters.time_offset_length; | |
| else if (sps->vui.vcl_hrd_parameters_present_flag) | |
| time_offset_length = sps->vui.vcl_hrd_parameters.time_offset_length; | |
| else | |
| time_offset_length = 24; | |
| if (time_offset_length > 0) | |
| ib(time_offset_length, time_offset); | |
| else | |
| infer(time_offset, 0); | |
| return 0; | |
| } | |
| SEI_FUNC(sei_pic_timing, (CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawSEIPicTiming *current, SEIMessageState *sei)) | |
| { | |
| CodedBitstreamH264Context *h264 = ctx->priv_data; | |
| const H264RawSPS *sps; | |
| int err; | |
| HEADER("Picture Timing"); | |
| sps = h264->active_sps; | |
| if (!sps) { | |
| // If there is exactly one possible SPS but it is not yet active | |
| // then just assume that it should be the active one. | |
| int i, k = -1; | |
| for (i = 0; i < H264_MAX_SPS_COUNT; i++) { | |
| if (h264->sps[i]) { | |
| if (k >= 0) { | |
| k = -1; | |
| break; | |
| } | |
| k = i; | |
| } | |
| } | |
| if (k >= 0) | |
| sps = h264->sps[k]; | |
| } | |
| if (!sps) { | |
| av_log(ctx->log_ctx, AV_LOG_ERROR, | |
| "No active SPS for pic_timing.\n"); | |
| return AVERROR_INVALIDDATA; | |
| } | |
| if (sps->vui.nal_hrd_parameters_present_flag || | |
| sps->vui.vcl_hrd_parameters_present_flag) { | |
| const H264RawHRD *hrd; | |
| if (sps->vui.nal_hrd_parameters_present_flag) | |
| hrd = &sps->vui.nal_hrd_parameters; | |
| else if (sps->vui.vcl_hrd_parameters_present_flag) | |
| hrd = &sps->vui.vcl_hrd_parameters; | |
| else { | |
| av_log(ctx->log_ctx, AV_LOG_ERROR, | |
| "No HRD parameters for pic_timing.\n"); | |
| return AVERROR_INVALIDDATA; | |
| } | |
| ub(hrd->cpb_removal_delay_length_minus1 + 1, cpb_removal_delay); | |
| ub(hrd->dpb_output_delay_length_minus1 + 1, dpb_output_delay); | |
| } | |
| if (sps->vui.pic_struct_present_flag) { | |
| static const uint8_t num_clock_ts[9] = { | |
| 1, 1, 1, 2, 2, 3, 3, 2, 3 | |
| }; | |
| int i; | |
| u(4, pic_struct, 0, 8); | |
| if (current->pic_struct > 8) | |
| return AVERROR_INVALIDDATA; | |
| for (i = 0; i < num_clock_ts[current->pic_struct]; i++) { | |
| flags(clock_timestamp_flag[i], 1, i); | |
| if (current->clock_timestamp_flag[i]) | |
| CHECK(FUNC(sei_pic_timestamp)(ctx, rw, | |
| ¤t->timestamp[i], sps)); | |
| } | |
| } | |
| return 0; | |
| } | |
| SEI_FUNC(sei_pan_scan_rect, (CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawSEIPanScanRect *current, | |
| SEIMessageState *sei)) | |
| { | |
| int err, i; | |
| HEADER("Pan-Scan Rectangle"); | |
| ue(pan_scan_rect_id, 0, UINT32_MAX - 1); | |
| flag(pan_scan_rect_cancel_flag); | |
| if (!current->pan_scan_rect_cancel_flag) { | |
| ue(pan_scan_cnt_minus1, 0, 2); | |
| for (i = 0; i <= current->pan_scan_cnt_minus1; i++) { | |
| ses(pan_scan_rect_left_offset[i], INT32_MIN + 1, INT32_MAX, 1, i); | |
| ses(pan_scan_rect_right_offset[i], INT32_MIN + 1, INT32_MAX, 1, i); | |
| ses(pan_scan_rect_top_offset[i], INT32_MIN + 1, INT32_MAX, 1, i); | |
| ses(pan_scan_rect_bottom_offset[i], INT32_MIN + 1, INT32_MAX, 1, i); | |
| } | |
| ue(pan_scan_rect_repetition_period, 0, 16384); | |
| } | |
| return 0; | |
| } | |
| SEI_FUNC(sei_recovery_point, (CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawSEIRecoveryPoint *current, | |
| SEIMessageState *sei)) | |
| { | |
| int err; | |
| HEADER("Recovery Point"); | |
| ue(recovery_frame_cnt, 0, 65535); | |
| flag(exact_match_flag); | |
| flag(broken_link_flag); | |
| u(2, changing_slice_group_idc, 0, 2); | |
| return 0; | |
| } | |
| SEI_FUNC(film_grain_characteristics, (CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawFilmGrainCharacteristics *current, | |
| SEIMessageState *state)) | |
| { | |
| CodedBitstreamH264Context *h264 = ctx->priv_data; | |
| const H264RawSPS *sps; | |
| int err, c, i, j; | |
| HEADER("Film Grain Characteristics"); | |
| sps = h264->active_sps; | |
| if (!sps) { | |
| // If there is exactly one possible SPS but it is not yet active | |
| // then just assume that it should be the active one. | |
| int i, k = -1; | |
| for (i = 0; i < H264_MAX_SPS_COUNT; i++) { | |
| if (h264->sps[i]) { | |
| if (k >= 0) { | |
| k = -1; | |
| break; | |
| } | |
| k = i; | |
| } | |
| } | |
| if (k >= 0) | |
| sps = h264->sps[k]; | |
| } | |
| flag(film_grain_characteristics_cancel_flag); | |
| if (!current->film_grain_characteristics_cancel_flag) { | |
| int filmGrainBitDepth[3]; | |
| u(2, film_grain_model_id, 0, 1); | |
| flag(separate_colour_description_present_flag); | |
| if (current->separate_colour_description_present_flag) { | |
| ub(3, film_grain_bit_depth_luma_minus8); | |
| ub(3, film_grain_bit_depth_chroma_minus8); | |
| flag(film_grain_full_range_flag); | |
| ub(8, film_grain_colour_primaries); | |
| ub(8, film_grain_transfer_characteristics); | |
| ub(8, film_grain_matrix_coefficients); | |
| } else { | |
| if (!sps) { | |
| av_log(ctx->log_ctx, AV_LOG_ERROR, | |
| "No active SPS for film_grain_characteristics.\n"); | |
| return AVERROR_INVALIDDATA; | |
| } | |
| infer(film_grain_bit_depth_luma_minus8, sps->bit_depth_luma_minus8); | |
| infer(film_grain_bit_depth_chroma_minus8, sps->bit_depth_chroma_minus8); | |
| infer(film_grain_full_range_flag, sps->vui.video_full_range_flag); | |
| infer(film_grain_colour_primaries, sps->vui.colour_primaries); | |
| infer(film_grain_transfer_characteristics, sps->vui.transfer_characteristics); | |
| infer(film_grain_matrix_coefficients, sps->vui.matrix_coefficients); | |
| } | |
| filmGrainBitDepth[0] = current->film_grain_bit_depth_luma_minus8 + 8; | |
| filmGrainBitDepth[1] = | |
| filmGrainBitDepth[2] = current->film_grain_bit_depth_chroma_minus8 + 8; | |
| u(2, blending_mode_id, 0, 1); | |
| ub(4, log2_scale_factor); | |
| for (c = 0; c < 3; c++) | |
| flags(comp_model_present_flag[c], 1, c); | |
| for (c = 0; c < 3; c++) { | |
| if (current->comp_model_present_flag[c]) { | |
| ubs(8, num_intensity_intervals_minus1[c], 1, c); | |
| us(3, num_model_values_minus1[c], 0, 5, 1, c); | |
| for (i = 0; i <= current->num_intensity_intervals_minus1[c]; i++) { | |
| ubs(8, intensity_interval_lower_bound[c][i], 2, c, i); | |
| ubs(8, intensity_interval_upper_bound[c][i], 2, c, i); | |
| for (j = 0; j <= current->num_model_values_minus1[c]; j++) | |
| ses(comp_model_value[c][i][j], 0 - current->film_grain_model_id * (1 << (filmGrainBitDepth[c] - 1)), | |
| ((1 << filmGrainBitDepth[c]) - 1) - current->film_grain_model_id * (1 << (filmGrainBitDepth[c] - 1)), | |
| 3, c, i, j); | |
| } | |
| } | |
| } | |
| ue(film_grain_characteristics_repetition_period, 0, 16384); | |
| } | |
| return 0; | |
| } | |
| SEI_FUNC(sei_display_orientation, (CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawSEIDisplayOrientation *current, | |
| SEIMessageState *sei)) | |
| { | |
| int err; | |
| HEADER("Display Orientation"); | |
| flag(display_orientation_cancel_flag); | |
| if (!current->display_orientation_cancel_flag) { | |
| flag(hor_flip); | |
| flag(ver_flip); | |
| ub(16, anticlockwise_rotation); | |
| ue(display_orientation_repetition_period, 0, 16384); | |
| flag(display_orientation_extension_flag); | |
| } | |
| return 0; | |
| } | |
| static int FUNC(sei)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawSEI *current) | |
| { | |
| int err; | |
| HEADER("Supplemental Enhancement Information"); | |
| CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, | |
| 1 << H264_NAL_SEI)); | |
| CHECK(FUNC_SEI(message_list)(ctx, rw, ¤t->message_list, 1)); | |
| CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); | |
| return 0; | |
| } | |
| static int FUNC(aud)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawAUD *current) | |
| { | |
| int err; | |
| HEADER("Access Unit Delimiter"); | |
| CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, | |
| 1 << H264_NAL_AUD)); | |
| ub(3, primary_pic_type); | |
| CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); | |
| return 0; | |
| } | |
| static int FUNC(ref_pic_list_modification)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawSliceHeader *current) | |
| { | |
| CodedBitstreamH264Context *h264 = ctx->priv_data; | |
| const H264RawSPS *sps = h264->active_sps; | |
| int err, i, mopn; | |
| if (current->slice_type % 5 != 2 && | |
| current->slice_type % 5 != 4) { | |
| flag(ref_pic_list_modification_flag_l0); | |
| if (current->ref_pic_list_modification_flag_l0) { | |
| for (i = 0; i < H264_MAX_RPLM_COUNT; i++) { | |
| xue(modification_of_pic_nums_idc, | |
| current->rplm_l0[i].modification_of_pic_nums_idc, 0, 3, 0); | |
| mopn = current->rplm_l0[i].modification_of_pic_nums_idc; | |
| if (mopn == 3) | |
| break; | |
| if (mopn == 0 || mopn == 1) | |
| xue(abs_diff_pic_num_minus1, | |
| current->rplm_l0[i].abs_diff_pic_num_minus1, | |
| 0, (1 + current->field_pic_flag) * | |
| (1 << (sps->log2_max_frame_num_minus4 + 4)), 0); | |
| else if (mopn == 2) | |
| xue(long_term_pic_num, | |
| current->rplm_l0[i].long_term_pic_num, | |
| 0, sps->max_num_ref_frames - 1, 0); | |
| } | |
| } | |
| } | |
| if (current->slice_type % 5 == 1) { | |
| flag(ref_pic_list_modification_flag_l1); | |
| if (current->ref_pic_list_modification_flag_l1) { | |
| for (i = 0; i < H264_MAX_RPLM_COUNT; i++) { | |
| xue(modification_of_pic_nums_idc, | |
| current->rplm_l1[i].modification_of_pic_nums_idc, 0, 3, 0); | |
| mopn = current->rplm_l1[i].modification_of_pic_nums_idc; | |
| if (mopn == 3) | |
| break; | |
| if (mopn == 0 || mopn == 1) | |
| xue(abs_diff_pic_num_minus1, | |
| current->rplm_l1[i].abs_diff_pic_num_minus1, | |
| 0, (1 + current->field_pic_flag) * | |
| (1 << (sps->log2_max_frame_num_minus4 + 4)), 0); | |
| else if (mopn == 2) | |
| xue(long_term_pic_num, | |
| current->rplm_l1[i].long_term_pic_num, | |
| 0, sps->max_num_ref_frames - 1, 0); | |
| } | |
| } | |
| } | |
| return 0; | |
| } | |
| static int FUNC(pred_weight_table)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawSliceHeader *current) | |
| { | |
| CodedBitstreamH264Context *h264 = ctx->priv_data; | |
| const H264RawSPS *sps = h264->active_sps; | |
| int chroma; | |
| int err, i, j; | |
| ue(luma_log2_weight_denom, 0, 7); | |
| chroma = !sps->separate_colour_plane_flag && sps->chroma_format_idc != 0; | |
| if (chroma) | |
| ue(chroma_log2_weight_denom, 0, 7); | |
| for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) { | |
| flags(luma_weight_l0_flag[i], 1, i); | |
| if (current->luma_weight_l0_flag[i]) { | |
| ses(luma_weight_l0[i], -128, +127, 1, i); | |
| ses(luma_offset_l0[i], -128, +127, 1, i); | |
| } | |
| if (chroma) { | |
| flags(chroma_weight_l0_flag[i], 1, i); | |
| if (current->chroma_weight_l0_flag[i]) { | |
| for (j = 0; j < 2; j++) { | |
| ses(chroma_weight_l0[i][j], -128, +127, 2, i, j); | |
| ses(chroma_offset_l0[i][j], -128, +127, 2, i, j); | |
| } | |
| } | |
| } | |
| } | |
| if (current->slice_type % 5 == 1) { | |
| for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) { | |
| flags(luma_weight_l1_flag[i], 1, i); | |
| if (current->luma_weight_l1_flag[i]) { | |
| ses(luma_weight_l1[i], -128, +127, 1, i); | |
| ses(luma_offset_l1[i], -128, +127, 1, i); | |
| } | |
| if (chroma) { | |
| flags(chroma_weight_l1_flag[i], 1, i); | |
| if (current->chroma_weight_l1_flag[i]) { | |
| for (j = 0; j < 2; j++) { | |
| ses(chroma_weight_l1[i][j], -128, +127, 2, i, j); | |
| ses(chroma_offset_l1[i][j], -128, +127, 2, i, j); | |
| } | |
| } | |
| } | |
| } | |
| } | |
| return 0; | |
| } | |
| static int FUNC(dec_ref_pic_marking)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawSliceHeader *current, int idr_pic_flag) | |
| { | |
| CodedBitstreamH264Context *h264 = ctx->priv_data; | |
| const H264RawSPS *sps = h264->active_sps; | |
| int err, i; | |
| uint32_t mmco; | |
| if (idr_pic_flag) { | |
| flag(no_output_of_prior_pics_flag); | |
| flag(long_term_reference_flag); | |
| } else { | |
| flag(adaptive_ref_pic_marking_mode_flag); | |
| if (current->adaptive_ref_pic_marking_mode_flag) { | |
| for (i = 0; i < H264_MAX_MMCO_COUNT; i++) { | |
| xue(memory_management_control_operation, | |
| current->mmco[i].memory_management_control_operation, | |
| 0, 6, 0); | |
| mmco = current->mmco[i].memory_management_control_operation; | |
| if (mmco == 0) | |
| break; | |
| if (mmco == 1 || mmco == 3) | |
| xue(difference_of_pic_nums_minus1, | |
| current->mmco[i].difference_of_pic_nums_minus1, | |
| 0, INT32_MAX, 0); | |
| if (mmco == 2) | |
| xue(long_term_pic_num, | |
| current->mmco[i].long_term_pic_num, | |
| 0, sps->max_num_ref_frames - 1, 0); | |
| if (mmco == 3 || mmco == 6) | |
| xue(long_term_frame_idx, | |
| current->mmco[i].long_term_frame_idx, | |
| 0, sps->max_num_ref_frames - 1, 0); | |
| if (mmco == 4) | |
| xue(max_long_term_frame_idx_plus1, | |
| current->mmco[i].max_long_term_frame_idx_plus1, | |
| 0, sps->max_num_ref_frames, 0); | |
| } | |
| if (i == H264_MAX_MMCO_COUNT) { | |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many " | |
| "memory management control operations.\n"); | |
| return AVERROR_INVALIDDATA; | |
| } | |
| } | |
| } | |
| return 0; | |
| } | |
| static int FUNC(slice_header)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawSliceHeader *current) | |
| { | |
| CodedBitstreamH264Context *h264 = ctx->priv_data; | |
| const H264RawSPS *sps; | |
| const H264RawPPS *pps; | |
| int err; | |
| int idr_pic_flag; | |
| int slice_type_i, slice_type_p, slice_type_b; | |
| int slice_type_si, slice_type_sp; | |
| HEADER("Slice Header"); | |
| CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, | |
| 1 << H264_NAL_SLICE | | |
| 1 << H264_NAL_IDR_SLICE | | |
| 1 << H264_NAL_AUXILIARY_SLICE)); | |
| if (current->nal_unit_header.nal_unit_type == H264_NAL_AUXILIARY_SLICE) { | |
| if (!h264->last_slice_nal_unit_type) { | |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "Auxiliary slice " | |
| "is not decodable without the main picture " | |
| "in the same access unit.\n"); | |
| return AVERROR_INVALIDDATA; | |
| } | |
| idr_pic_flag = h264->last_slice_nal_unit_type == H264_NAL_IDR_SLICE; | |
| } else { | |
| idr_pic_flag = current->nal_unit_header.nal_unit_type == H264_NAL_IDR_SLICE; | |
| } | |
| ue(first_mb_in_slice, 0, H264_MAX_MB_PIC_SIZE - 1); | |
| ue(slice_type, 0, 9); | |
| slice_type_i = current->slice_type % 5 == 2; | |
| slice_type_p = current->slice_type % 5 == 0; | |
| slice_type_b = current->slice_type % 5 == 1; | |
| slice_type_si = current->slice_type % 5 == 4; | |
| slice_type_sp = current->slice_type % 5 == 3; | |
| if (idr_pic_flag && !(slice_type_i || slice_type_si)) { | |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid slice type %d " | |
| "for IDR picture.\n", current->slice_type); | |
| return AVERROR_INVALIDDATA; | |
| } | |
| ue(pic_parameter_set_id, 0, 255); | |
| pps = h264->pps[current->pic_parameter_set_id]; | |
| if (!pps) { | |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "PPS id %d not available.\n", | |
| current->pic_parameter_set_id); | |
| return AVERROR_INVALIDDATA; | |
| } | |
| h264->active_pps = pps; | |
| sps = h264->sps[pps->seq_parameter_set_id]; | |
| if (!sps) { | |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n", | |
| pps->seq_parameter_set_id); | |
| return AVERROR_INVALIDDATA; | |
| } | |
| h264->active_sps = sps; | |
| if (sps->separate_colour_plane_flag) | |
| u(2, colour_plane_id, 0, 2); | |
| ub(sps->log2_max_frame_num_minus4 + 4, frame_num); | |
| if (!sps->frame_mbs_only_flag) { | |
| flag(field_pic_flag); | |
| if (current->field_pic_flag) | |
| flag(bottom_field_flag); | |
| else | |
| infer(bottom_field_flag, 0); | |
| } else { | |
| infer(field_pic_flag, 0); | |
| infer(bottom_field_flag, 0); | |
| } | |
| if (idr_pic_flag) | |
| ue(idr_pic_id, 0, 65535); | |
| if (sps->pic_order_cnt_type == 0) { | |
| ub(sps->log2_max_pic_order_cnt_lsb_minus4 + 4, pic_order_cnt_lsb); | |
| if (pps->bottom_field_pic_order_in_frame_present_flag && | |
| !current->field_pic_flag) | |
| se(delta_pic_order_cnt_bottom, INT32_MIN + 1, INT32_MAX); | |
| } else if (sps->pic_order_cnt_type == 1) { | |
| if (!sps->delta_pic_order_always_zero_flag) { | |
| se(delta_pic_order_cnt[0], INT32_MIN + 1, INT32_MAX); | |
| if (pps->bottom_field_pic_order_in_frame_present_flag && | |
| !current->field_pic_flag) | |
| se(delta_pic_order_cnt[1], INT32_MIN + 1, INT32_MAX); | |
| else | |
| infer(delta_pic_order_cnt[1], 0); | |
| } else { | |
| infer(delta_pic_order_cnt[0], 0); | |
| infer(delta_pic_order_cnt[1], 0); | |
| } | |
| } | |
| if (pps->redundant_pic_cnt_present_flag) | |
| ue(redundant_pic_cnt, 0, 127); | |
| else | |
| infer(redundant_pic_cnt, 0); | |
| if (current->nal_unit_header.nal_unit_type != H264_NAL_AUXILIARY_SLICE | |
| && !current->redundant_pic_cnt) | |
| h264->last_slice_nal_unit_type = | |
| current->nal_unit_header.nal_unit_type; | |
| if (slice_type_b) | |
| flag(direct_spatial_mv_pred_flag); | |
| if (slice_type_p || slice_type_sp || slice_type_b) { | |
| flag(num_ref_idx_active_override_flag); | |
| if (current->num_ref_idx_active_override_flag) { | |
| ue(num_ref_idx_l0_active_minus1, 0, 31); | |
| if (slice_type_b) | |
| ue(num_ref_idx_l1_active_minus1, 0, 31); | |
| } 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 (current->nal_unit_header.nal_unit_type == 20 || | |
| current->nal_unit_header.nal_unit_type == 21) { | |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "MVC / 3DAVC not supported.\n"); | |
| return AVERROR_PATCHWELCOME; | |
| } else { | |
| CHECK(FUNC(ref_pic_list_modification)(ctx, rw, current)); | |
| } | |
| if ((pps->weighted_pred_flag && (slice_type_p || slice_type_sp)) || | |
| (pps->weighted_bipred_idc == 1 && slice_type_b)) { | |
| CHECK(FUNC(pred_weight_table)(ctx, rw, current)); | |
| } | |
| if (current->nal_unit_header.nal_ref_idc != 0) { | |
| CHECK(FUNC(dec_ref_pic_marking)(ctx, rw, current, idr_pic_flag)); | |
| } | |
| if (pps->entropy_coding_mode_flag && | |
| !slice_type_i && !slice_type_si) { | |
| ue(cabac_init_idc, 0, 2); | |
| } | |
| se(slice_qp_delta, - 51 - 6 * sps->bit_depth_luma_minus8, | |
| + 51 + 6 * sps->bit_depth_luma_minus8); | |
| if (slice_type_sp || slice_type_si) { | |
| if (slice_type_sp) | |
| flag(sp_for_switch_flag); | |
| se(slice_qs_delta, -51, +51); | |
| } | |
| if (pps->deblocking_filter_control_present_flag) { | |
| ue(disable_deblocking_filter_idc, 0, 2); | |
| if (current->disable_deblocking_filter_idc != 1) { | |
| se(slice_alpha_c0_offset_div2, -6, +6); | |
| se(slice_beta_offset_div2, -6, +6); | |
| } else { | |
| infer(slice_alpha_c0_offset_div2, 0); | |
| infer(slice_beta_offset_div2, 0); | |
| } | |
| } else { | |
| infer(disable_deblocking_filter_idc, 0); | |
| infer(slice_alpha_c0_offset_div2, 0); | |
| infer(slice_beta_offset_div2, 0); | |
| } | |
| if (pps->num_slice_groups_minus1 > 0 && | |
| pps->slice_group_map_type >= 3 && | |
| pps->slice_group_map_type <= 5) { | |
| unsigned int pic_size, max, bits; | |
| pic_size = (sps->pic_width_in_mbs_minus1 + 1) * | |
| (sps->pic_height_in_map_units_minus1 + 1); | |
| max = (pic_size + pps->slice_group_change_rate_minus1) / | |
| (pps->slice_group_change_rate_minus1 + 1); | |
| bits = av_ceil_log2(max + 1); | |
| u(bits, slice_group_change_cycle, 0, max); | |
| } | |
| if (pps->entropy_coding_mode_flag) { | |
| while (byte_alignment(rw)) | |
| fixed(1, cabac_alignment_one_bit, 1); | |
| } | |
| return 0; | |
| } | |
| static int FUNC(filler)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawFiller *current) | |
| { | |
| int err; | |
| HEADER("Filler Data"); | |
| CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, | |
| 1 << H264_NAL_FILLER_DATA)); | |
| #ifdef READ | |
| while (show_bits(rw, 8) == 0xff) { | |
| fixed(8, ff_byte, 0xff); | |
| ++current->filler_size; | |
| } | |
| #else | |
| { | |
| uint32_t i; | |
| for (i = 0; i < current->filler_size; i++) | |
| fixed(8, ff_byte, 0xff); | |
| } | |
| #endif | |
| CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); | |
| return 0; | |
| } | |
| static int FUNC(end_of_sequence)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawNALUnitHeader *current) | |
| { | |
| HEADER("End of Sequence"); | |
| return FUNC(nal_unit_header)(ctx, rw, current, | |
| 1 << H264_NAL_END_SEQUENCE); | |
| } | |
| static int FUNC(end_of_stream)(CodedBitstreamContext *ctx, RWContext *rw, | |
| H264RawNALUnitHeader *current) | |
| { | |
| HEADER("End of Stream"); | |
| return FUNC(nal_unit_header)(ctx, rw, current, | |
| 1 << H264_NAL_END_STREAM); | |
| } |