/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 2019 Pengutronix, Michael Tretter * * Convert NAL units between raw byte sequence payloads (RBSP) and C structs. */ #ifndef __NAL_HEVC_H__ #define __NAL_HEVC_H__ #include #include #include #include #include struct nal_hevc_profile_tier_level { unsigned int general_profile_space; unsigned int general_tier_flag; unsigned int general_profile_idc; unsigned int general_profile_compatibility_flag[32]; unsigned int general_progressive_source_flag; unsigned int general_interlaced_source_flag; unsigned int general_non_packed_constraint_flag; unsigned int general_frame_only_constraint_flag; union { struct { unsigned int general_max_12bit_constraint_flag; unsigned int general_max_10bit_constraint_flag; unsigned int general_max_8bit_constraint_flag; unsigned int general_max_422chroma_constraint_flag; unsigned int general_max_420chroma_constraint_flag; unsigned int general_max_monochrome_constraint_flag; unsigned int general_intra_constraint_flag; unsigned int general_one_picture_only_constraint_flag; unsigned int general_lower_bit_rate_constraint_flag; union { struct { unsigned int general_max_14bit_constraint_flag; unsigned int general_reserved_zero_33bits; }; unsigned int general_reserved_zero_34bits; }; }; struct { unsigned int general_reserved_zero_7bits; /* unsigned int general_one_picture_only_constraint_flag; */ unsigned int general_reserved_zero_35bits; }; unsigned int general_reserved_zero_43bits; }; union { unsigned int general_inbld_flag; unsigned int general_reserved_zero_bit; }; unsigned int general_level_idc; }; /* * struct nal_hevc_vps - Video parameter set * * C struct representation of the video parameter set NAL unit as defined by * Rec. ITU-T H.265 (02/2018) 7.3.2.1 Video parameter set RBSP syntax */ struct nal_hevc_vps { unsigned int video_parameter_set_id; unsigned int base_layer_internal_flag; unsigned int base_layer_available_flag; unsigned int max_layers_minus1; unsigned int max_sub_layers_minus1; unsigned int temporal_id_nesting_flag; struct nal_hevc_profile_tier_level profile_tier_level; unsigned int sub_layer_ordering_info_present_flag; struct { unsigned int max_dec_pic_buffering_minus1[7]; unsigned int max_num_reorder_pics[7]; unsigned int max_latency_increase_plus1[7]; }; unsigned int max_layer_id; unsigned int num_layer_sets_minus1; unsigned int layer_id_included_flag[1024][64]; unsigned int timing_info_present_flag; struct { unsigned int num_units_in_tick; unsigned int time_scale; unsigned int poc_proportional_to_timing_flag; unsigned int num_ticks_poc_diff_one_minus1; unsigned int num_hrd_parameters; struct { unsigned int hrd_layer_set_idx[0]; unsigned int cprms_present_flag[0]; }; /* hrd_parameters( cprms_present_flag[ i ], max_sub_layers_minus1 ) */ }; unsigned int extension_flag; unsigned int extension_data_flag; }; #define N_HRD_PARAMS 1 struct nal_hevc_sub_layer_hrd_parameters { unsigned int bit_rate_value_minus1[N_HRD_PARAMS]; unsigned int cpb_size_value_minus1[N_HRD_PARAMS]; unsigned int cbr_flag[N_HRD_PARAMS]; }; struct nal_hevc_hrd_parameters { unsigned int nal_hrd_parameters_present_flag; unsigned int vcl_hrd_parameters_present_flag; struct { unsigned int sub_pic_hrd_params_present_flag; struct { unsigned int tick_divisor_minus2; unsigned int du_cpb_removal_delay_increment_length_minus1; unsigned int sub_pic_cpb_params_in_pic_timing_sei_flag; unsigned int dpb_output_delay_du_length_minus1; }; unsigned int bit_rate_scale; unsigned int cpb_size_scale; unsigned int cpb_size_du_scale; unsigned int initial_cpb_removal_delay_length_minus1; unsigned int au_cpb_removal_delay_length_minus1; unsigned int dpb_output_delay_length_minus1; }; struct { unsigned int fixed_pic_rate_general_flag[1]; unsigned int fixed_pic_rate_within_cvs_flag[1]; unsigned int elemental_duration_in_tc_minus1[1]; unsigned int low_delay_hrd_flag[1]; unsigned int cpb_cnt_minus1[1]; struct nal_hevc_sub_layer_hrd_parameters nal_hrd[1]; struct nal_hevc_sub_layer_hrd_parameters vcl_hrd[1]; }; }; /* * struct nal_hevc_vui_parameters - VUI parameters * * C struct representation of the VUI parameters as defined by Rec. ITU-T * H.265 (02/2018) E.2.1 VUI parameters syntax. */ struct nal_hevc_vui_parameters { unsigned int aspect_ratio_info_present_flag; struct { unsigned int aspect_ratio_idc; unsigned int sar_width; unsigned int sar_height; }; unsigned int overscan_info_present_flag; unsigned int overscan_appropriate_flag; unsigned int video_signal_type_present_flag; struct { unsigned int video_format; unsigned int video_full_range_flag; unsigned int colour_description_present_flag; struct { unsigned int colour_primaries; unsigned int transfer_characteristics; unsigned int matrix_coeffs; }; }; unsigned int chroma_loc_info_present_flag; struct { unsigned int chroma_sample_loc_type_top_field; unsigned int chroma_sample_loc_type_bottom_field; }; unsigned int neutral_chroma_indication_flag; unsigned int field_seq_flag; unsigned int frame_field_info_present_flag; unsigned int default_display_window_flag; struct { unsigned int def_disp_win_left_offset; unsigned int def_disp_win_right_offset; unsigned int def_disp_win_top_offset; unsigned int def_disp_win_bottom_offset; }; unsigned int vui_timing_info_present_flag; struct { unsigned int vui_num_units_in_tick; unsigned int vui_time_scale; unsigned int vui_poc_proportional_to_timing_flag; unsigned int vui_num_ticks_poc_diff_one_minus1; unsigned int vui_hrd_parameters_present_flag; struct nal_hevc_hrd_parameters nal_hrd_parameters; }; unsigned int bitstream_restriction_flag; struct { unsigned int tiles_fixed_structure_flag; unsigned int motion_vectors_over_pic_boundaries_flag; unsigned int restricted_ref_pic_lists_flag; unsigned int min_spatial_segmentation_idc; unsigned int max_bytes_per_pic_denom; unsigned int max_bits_per_min_cu_denom; unsigned int log2_max_mv_length_horizontal; unsigned int log2_max_mv_length_vertical; }; }; /* * struct nal_hevc_sps - Sequence parameter set * * C struct representation of the video parameter set NAL unit as defined by * Rec. ITU-T H.265 (02/2018) 7.3.2.2 Sequence parameter set RBSP syntax */ struct nal_hevc_sps { unsigned int video_parameter_set_id; unsigned int max_sub_layers_minus1; unsigned int temporal_id_nesting_flag; struct nal_hevc_profile_tier_level profile_tier_level; unsigned int seq_parameter_set_id; unsigned int chroma_format_idc; unsigned int separate_colour_plane_flag; unsigned int pic_width_in_luma_samples; unsigned int pic_height_in_luma_samples; unsigned int conformance_window_flag; struct { unsigned int conf_win_left_offset; unsigned int conf_win_right_offset; unsigned int conf_win_top_offset; unsigned int conf_win_bottom_offset; }; unsigned int bit_depth_luma_minus8; unsigned int bit_depth_chroma_minus8; unsigned int log2_max_pic_order_cnt_lsb_minus4; unsigned int sub_layer_ordering_info_present_flag; struct { unsigned int max_dec_pic_buffering_minus1[7]; unsigned int max_num_reorder_pics[7]; unsigned int max_latency_increase_plus1[7]; }; unsigned int log2_min_luma_coding_block_size_minus3; unsigned int log2_diff_max_min_luma_coding_block_size; unsigned int log2_min_luma_transform_block_size_minus2; unsigned int log2_diff_max_min_luma_transform_block_size; unsigned int max_transform_hierarchy_depth_inter; unsigned int max_transform_hierarchy_depth_intra; unsigned int scaling_list_enabled_flag; unsigned int scaling_list_data_present_flag; unsigned int amp_enabled_flag; unsigned int sample_adaptive_offset_enabled_flag; unsigned int pcm_enabled_flag; struct { unsigned int pcm_sample_bit_depth_luma_minus1; unsigned int pcm_sample_bit_depth_chroma_minus1; unsigned int log2_min_pcm_luma_coding_block_size_minus3; unsigned int log2_diff_max_min_pcm_luma_coding_block_size; unsigned int pcm_loop_filter_disabled_flag; }; unsigned int num_short_term_ref_pic_sets; unsigned int long_term_ref_pics_present_flag; unsigned int sps_temporal_mvp_enabled_flag; unsigned int strong_intra_smoothing_enabled_flag; unsigned int vui_parameters_present_flag; struct nal_hevc_vui_parameters vui; unsigned int extension_present_flag; struct { unsigned int sps_range_extension_flag; unsigned int sps_multilayer_extension_flag; unsigned int sps_3d_extension_flag; unsigned int sps_scc_extension_flag; unsigned int sps_extension_4bits; }; }; struct nal_hevc_pps { unsigned int pps_pic_parameter_set_id; unsigned int pps_seq_parameter_set_id; unsigned int dependent_slice_segments_enabled_flag; unsigned int output_flag_present_flag; unsigned int num_extra_slice_header_bits; unsigned int sign_data_hiding_enabled_flag; unsigned int cabac_init_present_flag; unsigned int num_ref_idx_l0_default_active_minus1; unsigned int num_ref_idx_l1_default_active_minus1; int init_qp_minus26; unsigned int constrained_intra_pred_flag; unsigned int transform_skip_enabled_flag; unsigned int cu_qp_delta_enabled_flag; unsigned int diff_cu_qp_delta_depth; int pps_cb_qp_offset; int pps_cr_qp_offset; unsigned int pps_slice_chroma_qp_offsets_present_flag; unsigned int weighted_pred_flag; unsigned int weighted_bipred_flag; unsigned int transquant_bypass_enabled_flag; unsigned int tiles_enabled_flag; unsigned int entropy_coding_sync_enabled_flag; struct { unsigned int num_tile_columns_minus1; unsigned int num_tile_rows_minus1; unsigned int uniform_spacing_flag; struct { unsigned int column_width_minus1[1]; unsigned int row_height_minus1[1]; }; unsigned int loop_filter_across_tiles_enabled_flag; }; unsigned int pps_loop_filter_across_slices_enabled_flag; unsigned int deblocking_filter_control_present_flag; struct { unsigned int deblocking_filter_override_enabled_flag; unsigned int pps_deblocking_filter_disabled_flag; struct { int pps_beta_offset_div2; int pps_tc_offset_div2; }; }; unsigned int pps_scaling_list_data_present_flag; unsigned int lists_modification_present_flag; unsigned int log2_parallel_merge_level_minus2; unsigned int slice_segment_header_extension_present_flag; unsigned int pps_extension_present_flag; struct { unsigned int pps_range_extension_flag; unsigned int pps_multilayer_extension_flag; unsigned int pps_3d_extension_flag; unsigned int pps_scc_extension_flag; unsigned int pps_extension_4bits; }; }; /** * nal_hevc_profile() - Get profile_idc for v4l2 hevc profile * @profile: the profile as &enum v4l2_mpeg_video_hevc_profile * * Convert the &enum v4l2_mpeg_video_hevc_profile to profile_idc as specified * in Rec. ITU-T H.265 (02/2018) A.3. * * Return: the profile_idc for the passed level */ static inline int nal_hevc_profile(enum v4l2_mpeg_video_hevc_profile profile) { switch (profile) { case V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN: return 1; case V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_10: return 2; case V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_STILL_PICTURE: return 3; default: return -EINVAL; } } /** * nal_hevc_tier() - Get tier_flag for v4l2 hevc tier * @tier: the tier as &enum v4l2_mpeg_video_hevc_tier * * Convert the &enum v4l2_mpeg_video_hevc_tier to tier_flag as specified * in Rec. ITU-T H.265 (02/2018) A.4.1. * * Return: the tier_flag for the passed tier */ static inline int nal_hevc_tier(enum v4l2_mpeg_video_hevc_tier tier) { switch (tier) { case V4L2_MPEG_VIDEO_HEVC_TIER_MAIN: return 0; case V4L2_MPEG_VIDEO_HEVC_TIER_HIGH: return 1; default: return -EINVAL; } } /** * nal_hevc_level() - Get level_idc for v4l2 hevc level * @level: the level as &enum v4l2_mpeg_video_hevc_level * * Convert the &enum v4l2_mpeg_video_hevc_level to level_idc as specified in * Rec. ITU-T H.265 (02/2018) A.4.1. * * Return: the level_idc for the passed level */ static inline int nal_hevc_level(enum v4l2_mpeg_video_hevc_level level) { /* * T-Rec-H.265 p. 280: general_level_idc and sub_layer_level_idc[ i ] * shall be set equal to a value of 30 times the level number * specified in Table A.6. */ int factor = 30 / 10; switch (level) { case V4L2_MPEG_VIDEO_HEVC_LEVEL_1: return factor * 10; case V4L2_MPEG_VIDEO_HEVC_LEVEL_2: return factor * 20; case V4L2_MPEG_VIDEO_HEVC_LEVEL_2_1: return factor * 21; case V4L2_MPEG_VIDEO_HEVC_LEVEL_3: return factor * 30; case V4L2_MPEG_VIDEO_HEVC_LEVEL_3_1: return factor * 31; case V4L2_MPEG_VIDEO_HEVC_LEVEL_4: return factor * 40; case V4L2_MPEG_VIDEO_HEVC_LEVEL_4_1: return factor * 41; case V4L2_MPEG_VIDEO_HEVC_LEVEL_5: return factor * 50; case V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1: return factor * 51; case V4L2_MPEG_VIDEO_HEVC_LEVEL_5_2: return factor * 52; case V4L2_MPEG_VIDEO_HEVC_LEVEL_6: return factor * 60; case V4L2_MPEG_VIDEO_HEVC_LEVEL_6_1: return factor * 61; case V4L2_MPEG_VIDEO_HEVC_LEVEL_6_2: return factor * 62; default: return -EINVAL; } } static inline int nal_hevc_full_range(enum v4l2_quantization quantization) { switch (quantization) { case V4L2_QUANTIZATION_FULL_RANGE: return 1; case V4L2_QUANTIZATION_LIM_RANGE: return 0; default: break; } return 0; } static inline int nal_hevc_color_primaries(enum v4l2_colorspace colorspace) { switch (colorspace) { case V4L2_COLORSPACE_SMPTE170M: return 6; case V4L2_COLORSPACE_SMPTE240M: return 7; case V4L2_COLORSPACE_REC709: return 1; case V4L2_COLORSPACE_470_SYSTEM_M: return 4; case V4L2_COLORSPACE_JPEG: case V4L2_COLORSPACE_SRGB: case V4L2_COLORSPACE_470_SYSTEM_BG: return 5; case V4L2_COLORSPACE_BT2020: return 9; case V4L2_COLORSPACE_DEFAULT: case V4L2_COLORSPACE_OPRGB: case V4L2_COLORSPACE_RAW: case V4L2_COLORSPACE_DCI_P3: default: return 2; } } static inline int nal_hevc_transfer_characteristics(enum v4l2_colorspace colorspace, enum v4l2_xfer_func xfer_func) { if (xfer_func == V4L2_XFER_FUNC_DEFAULT) xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(colorspace); switch (xfer_func) { case V4L2_XFER_FUNC_709: return 6; case V4L2_XFER_FUNC_SMPTE2084: return 16; case V4L2_XFER_FUNC_SRGB: case V4L2_XFER_FUNC_OPRGB: case V4L2_XFER_FUNC_NONE: case V4L2_XFER_FUNC_DCI_P3: case V4L2_XFER_FUNC_SMPTE240M: default: return 2; } } static inline int nal_hevc_matrix_coeffs(enum v4l2_colorspace colorspace, enum v4l2_ycbcr_encoding ycbcr_encoding) { if (ycbcr_encoding == V4L2_YCBCR_ENC_DEFAULT) ycbcr_encoding = V4L2_MAP_YCBCR_ENC_DEFAULT(colorspace); switch (ycbcr_encoding) { case V4L2_YCBCR_ENC_601: case V4L2_YCBCR_ENC_XV601: return 5; case V4L2_YCBCR_ENC_709: case V4L2_YCBCR_ENC_XV709: return 1; case V4L2_YCBCR_ENC_BT2020: return 9; case V4L2_YCBCR_ENC_BT2020_CONST_LUM: return 10; case V4L2_YCBCR_ENC_SMPTE240M: default: return 2; } } ssize_t nal_hevc_write_vps(const struct device *dev, void *dest, size_t n, struct nal_hevc_vps *vps); ssize_t nal_hevc_read_vps(const struct device *dev, struct nal_hevc_vps *vps, void *src, size_t n); ssize_t nal_hevc_write_sps(const struct device *dev, void *dest, size_t n, struct nal_hevc_sps *sps); ssize_t nal_hevc_read_sps(const struct device *dev, struct nal_hevc_sps *sps, void *src, size_t n); ssize_t nal_hevc_write_pps(const struct device *dev, void *dest, size_t n, struct nal_hevc_pps *pps); ssize_t nal_hevc_read_pps(const struct device *dev, struct nal_hevc_pps *pps, void *src, size_t n); ssize_t nal_hevc_write_filler(const struct device *dev, void *dest, size_t n); ssize_t nal_hevc_read_filler(const struct device *dev, void *src, size_t n); #endif /* __NAL_HEVC_H__ */