1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2019 Pengutronix, Michael Tretter <kernel@pengutronix.de> 4 * 5 * Convert NAL units between raw byte sequence payloads (RBSP) and C structs. 6 */ 7 8 #ifndef __NAL_HEVC_H__ 9 #define __NAL_HEVC_H__ 10 11 #include <linux/kernel.h> 12 #include <linux/types.h> 13 #include <media/v4l2-ctrls.h> 14 15 struct nal_hevc_profile_tier_level { 16 unsigned int general_profile_space; 17 unsigned int general_tier_flag; 18 unsigned int general_profile_idc; 19 unsigned int general_profile_compatibility_flag[32]; 20 unsigned int general_progressive_source_flag; 21 unsigned int general_interlaced_source_flag; 22 unsigned int general_non_packed_constraint_flag; 23 unsigned int general_frame_only_constraint_flag; 24 union { 25 struct { 26 unsigned int general_max_12bit_constraint_flag; 27 unsigned int general_max_10bit_constraint_flag; 28 unsigned int general_max_8bit_constraint_flag; 29 unsigned int general_max_422chroma_constraint_flag; 30 unsigned int general_max_420chroma_constraint_flag; 31 unsigned int general_max_monochrome_constraint_flag; 32 unsigned int general_intra_constraint_flag; 33 unsigned int general_one_picture_only_constraint_flag; 34 unsigned int general_lower_bit_rate_constraint_flag; 35 union { 36 struct { 37 unsigned int general_max_14bit_constraint_flag; 38 unsigned int general_reserved_zero_33bits; 39 }; 40 unsigned int general_reserved_zero_34bits; 41 }; 42 }; 43 struct { 44 unsigned int general_reserved_zero_7bits; 45 /* unsigned int general_one_picture_only_constraint_flag; */ 46 unsigned int general_reserved_zero_35bits; 47 }; 48 unsigned int general_reserved_zero_43bits; 49 }; 50 union { 51 unsigned int general_inbld_flag; 52 unsigned int general_reserved_zero_bit; 53 }; 54 unsigned int general_level_idc; 55 }; 56 57 /** 58 * struct nal_hevc_vps - Video parameter set 59 * 60 * C struct representation of the video parameter set NAL unit as defined by 61 * Rec. ITU-T H.265 (02/2018) 7.3.2.1 Video parameter set RBSP syntax 62 */ 63 struct nal_hevc_vps { 64 unsigned int video_parameter_set_id; 65 unsigned int base_layer_internal_flag; 66 unsigned int base_layer_available_flag; 67 unsigned int max_layers_minus1; 68 unsigned int max_sub_layers_minus1; 69 unsigned int temporal_id_nesting_flag; 70 struct nal_hevc_profile_tier_level profile_tier_level; 71 unsigned int sub_layer_ordering_info_present_flag; 72 struct { 73 unsigned int max_dec_pic_buffering_minus1[7]; 74 unsigned int max_num_reorder_pics[7]; 75 unsigned int max_latency_increase_plus1[7]; 76 }; 77 unsigned int max_layer_id; 78 unsigned int num_layer_sets_minus1; 79 unsigned int layer_id_included_flag[1024][64]; 80 unsigned int timing_info_present_flag; 81 struct { 82 unsigned int num_units_in_tick; 83 unsigned int time_scale; 84 unsigned int poc_proportional_to_timing_flag; 85 unsigned int num_ticks_poc_diff_one_minus1; 86 unsigned int num_hrd_parameters; 87 struct { 88 unsigned int hrd_layer_set_idx[0]; 89 unsigned int cprms_present_flag[0]; 90 }; 91 /* hrd_parameters( cprms_present_flag[ i ], max_sub_layers_minus1 ) */ 92 }; 93 unsigned int extension_flag; 94 unsigned int extension_data_flag; 95 }; 96 97 struct nal_hevc_sub_layer_hrd_parameters { 98 unsigned int bit_rate_value_minus1[1]; 99 unsigned int cpb_size_value_minus1[1]; 100 unsigned int cbr_flag[1]; 101 }; 102 103 struct nal_hevc_hrd_parameters { 104 unsigned int nal_hrd_parameters_present_flag; 105 unsigned int vcl_hrd_parameters_present_flag; 106 struct { 107 unsigned int sub_pic_hrd_params_present_flag; 108 struct { 109 unsigned int tick_divisor_minus2; 110 unsigned int du_cpb_removal_delay_increment_length_minus1; 111 unsigned int sub_pic_cpb_params_in_pic_timing_sei_flag; 112 unsigned int dpb_output_delay_du_length_minus1; 113 }; 114 unsigned int bit_rate_scale; 115 unsigned int cpb_size_scale; 116 unsigned int cpb_size_du_scale; 117 unsigned int initial_cpb_removal_delay_length_minus1; 118 unsigned int au_cpb_removal_delay_length_minus1; 119 unsigned int dpb_output_delay_length_minus1; 120 }; 121 struct { 122 unsigned int fixed_pic_rate_general_flag[1]; 123 unsigned int fixed_pic_rate_within_cvs_flag[1]; 124 unsigned int elemental_duration_in_tc_minus1[1]; 125 unsigned int low_delay_hrd_flag[1]; 126 unsigned int cpb_cnt_minus1[1]; 127 struct nal_hevc_sub_layer_hrd_parameters nal_hrd[1]; 128 struct nal_hevc_sub_layer_hrd_parameters vcl_hrd[1]; 129 }; 130 }; 131 132 /** 133 * struct nal_hevc_vui_parameters - VUI parameters 134 * 135 * C struct representation of the VUI parameters as defined by Rec. ITU-T 136 * H.265 (02/2018) E.2.1 VUI parameters syntax. 137 */ 138 struct nal_hevc_vui_parameters { 139 unsigned int aspect_ratio_info_present_flag; 140 struct { 141 unsigned int aspect_ratio_idc; 142 unsigned int sar_width; 143 unsigned int sar_height; 144 }; 145 unsigned int overscan_info_present_flag; 146 unsigned int overscan_appropriate_flag; 147 unsigned int video_signal_type_present_flag; 148 struct { 149 unsigned int video_format; 150 unsigned int video_full_range_flag; 151 unsigned int colour_description_present_flag; 152 struct { 153 unsigned int colour_primaries; 154 unsigned int transfer_characteristics; 155 unsigned int matrix_coeffs; 156 }; 157 }; 158 unsigned int chroma_loc_info_present_flag; 159 struct { 160 unsigned int chroma_sample_loc_type_top_field; 161 unsigned int chroma_sample_loc_type_bottom_field; 162 }; 163 unsigned int neutral_chroma_indication_flag; 164 unsigned int field_seq_flag; 165 unsigned int frame_field_info_present_flag; 166 unsigned int default_display_window_flag; 167 struct { 168 unsigned int def_disp_win_left_offset; 169 unsigned int def_disp_win_right_offset; 170 unsigned int def_disp_win_top_offset; 171 unsigned int def_disp_win_bottom_offset; 172 }; 173 unsigned int vui_timing_info_present_flag; 174 struct { 175 unsigned int vui_num_units_in_tick; 176 unsigned int vui_time_scale; 177 unsigned int vui_poc_proportional_to_timing_flag; 178 unsigned int vui_num_ticks_poc_diff_one_minus1; 179 unsigned int vui_hrd_parameters_present_flag; 180 struct nal_hevc_hrd_parameters nal_hrd_parameters; 181 }; 182 unsigned int bitstream_restriction_flag; 183 struct { 184 unsigned int tiles_fixed_structure_flag; 185 unsigned int motion_vectors_over_pic_boundaries_flag; 186 unsigned int restricted_ref_pic_lists_flag; 187 unsigned int min_spatial_segmentation_idc; 188 unsigned int max_bytes_per_pic_denom; 189 unsigned int max_bits_per_min_cu_denom; 190 unsigned int log2_max_mv_length_horizontal; 191 unsigned int log2_max_mv_length_vertical; 192 }; 193 }; 194 195 /** 196 * struct nal_hevc_sps - Sequence parameter set 197 * 198 * C struct representation of the video parameter set NAL unit as defined by 199 * Rec. ITU-T H.265 (02/2018) 7.3.2.2 Sequence parameter set RBSP syntax 200 */ 201 struct nal_hevc_sps { 202 unsigned int video_parameter_set_id; 203 unsigned int max_sub_layers_minus1; 204 unsigned int temporal_id_nesting_flag; 205 struct nal_hevc_profile_tier_level profile_tier_level; 206 unsigned int seq_parameter_set_id; 207 unsigned int chroma_format_idc; 208 unsigned int separate_colour_plane_flag; 209 unsigned int pic_width_in_luma_samples; 210 unsigned int pic_height_in_luma_samples; 211 unsigned int conformance_window_flag; 212 struct { 213 unsigned int conf_win_left_offset; 214 unsigned int conf_win_right_offset; 215 unsigned int conf_win_top_offset; 216 unsigned int conf_win_bottom_offset; 217 }; 218 219 unsigned int bit_depth_luma_minus8; 220 unsigned int bit_depth_chroma_minus8; 221 unsigned int log2_max_pic_order_cnt_lsb_minus4; 222 unsigned int sub_layer_ordering_info_present_flag; 223 struct { 224 unsigned int max_dec_pic_buffering_minus1[7]; 225 unsigned int max_num_reorder_pics[7]; 226 unsigned int max_latency_increase_plus1[7]; 227 }; 228 unsigned int log2_min_luma_coding_block_size_minus3; 229 unsigned int log2_diff_max_min_luma_coding_block_size; 230 unsigned int log2_min_luma_transform_block_size_minus2; 231 unsigned int log2_diff_max_min_luma_transform_block_size; 232 unsigned int max_transform_hierarchy_depth_inter; 233 unsigned int max_transform_hierarchy_depth_intra; 234 235 unsigned int scaling_list_enabled_flag; 236 unsigned int scaling_list_data_present_flag; 237 unsigned int amp_enabled_flag; 238 unsigned int sample_adaptive_offset_enabled_flag; 239 unsigned int pcm_enabled_flag; 240 struct { 241 unsigned int pcm_sample_bit_depth_luma_minus1; 242 unsigned int pcm_sample_bit_depth_chroma_minus1; 243 unsigned int log2_min_pcm_luma_coding_block_size_minus3; 244 unsigned int log2_diff_max_min_pcm_luma_coding_block_size; 245 unsigned int pcm_loop_filter_disabled_flag; 246 }; 247 248 unsigned int num_short_term_ref_pic_sets; 249 unsigned int long_term_ref_pics_present_flag; 250 unsigned int sps_temporal_mvp_enabled_flag; 251 unsigned int strong_intra_smoothing_enabled_flag; 252 unsigned int vui_parameters_present_flag; 253 struct nal_hevc_vui_parameters vui; 254 unsigned int extension_present_flag; 255 struct { 256 unsigned int sps_range_extension_flag; 257 unsigned int sps_multilayer_extension_flag; 258 unsigned int sps_3d_extension_flag; 259 unsigned int sps_scc_extension_flag; 260 unsigned int sps_extension_4bits; 261 }; 262 }; 263 264 struct nal_hevc_pps { 265 unsigned int pps_pic_parameter_set_id; 266 unsigned int pps_seq_parameter_set_id; 267 unsigned int dependent_slice_segments_enabled_flag; 268 unsigned int output_flag_present_flag; 269 unsigned int num_extra_slice_header_bits; 270 unsigned int sign_data_hiding_enabled_flag; 271 unsigned int cabac_init_present_flag; 272 unsigned int num_ref_idx_l0_default_active_minus1; 273 unsigned int num_ref_idx_l1_default_active_minus1; 274 int init_qp_minus26; 275 unsigned int constrained_intra_pred_flag; 276 unsigned int transform_skip_enabled_flag; 277 unsigned int cu_qp_delta_enabled_flag; 278 unsigned int diff_cu_qp_delta_depth; 279 int pps_cb_qp_offset; 280 int pps_cr_qp_offset; 281 unsigned int pps_slice_chroma_qp_offsets_present_flag; 282 unsigned int weighted_pred_flag; 283 unsigned int weighted_bipred_flag; 284 unsigned int transquant_bypass_enabled_flag; 285 unsigned int tiles_enabled_flag; 286 unsigned int entropy_coding_sync_enabled_flag; 287 struct { 288 unsigned int num_tile_columns_minus1; 289 unsigned int num_tile_rows_minus1; 290 unsigned int uniform_spacing_flag; 291 struct { 292 unsigned int column_width_minus1[1]; 293 unsigned int row_height_minus1[1]; 294 }; 295 unsigned int loop_filter_across_tiles_enabled_flag; 296 }; 297 unsigned int pps_loop_filter_across_slices_enabled_flag; 298 unsigned int deblocking_filter_control_present_flag; 299 struct { 300 unsigned int deblocking_filter_override_enabled_flag; 301 unsigned int pps_deblocking_filter_disabled_flag; 302 struct { 303 int pps_beta_offset_div2; 304 int pps_tc_offset_div2; 305 }; 306 }; 307 unsigned int pps_scaling_list_data_present_flag; 308 unsigned int lists_modification_present_flag; 309 unsigned int log2_parallel_merge_level_minus2; 310 unsigned int slice_segment_header_extension_present_flag; 311 unsigned int pps_extension_present_flag; 312 struct { 313 unsigned int pps_range_extension_flag; 314 unsigned int pps_multilayer_extension_flag; 315 unsigned int pps_3d_extension_flag; 316 unsigned int pps_scc_extension_flag; 317 unsigned int pps_extension_4bits; 318 }; 319 }; 320 321 int nal_hevc_profile_from_v4l2(enum v4l2_mpeg_video_hevc_profile profile); 322 int nal_hevc_tier_from_v4l2(enum v4l2_mpeg_video_hevc_tier tier); 323 int nal_hevc_level_from_v4l2(enum v4l2_mpeg_video_hevc_level level); 324 325 int nal_range_from_v4l2(enum v4l2_quantization quantization); 326 int nal_color_primaries_from_v4l2(enum v4l2_colorspace colorspace); 327 int nal_transfer_characteristics_from_v4l2(enum v4l2_colorspace colorspace, 328 enum v4l2_xfer_func xfer_func); 329 int nal_matrix_coeffs_from_v4l2(enum v4l2_colorspace colorspace, 330 enum v4l2_ycbcr_encoding ycbcr_encoding); 331 332 ssize_t nal_hevc_write_vps(const struct device *dev, 333 void *dest, size_t n, struct nal_hevc_vps *vps); 334 ssize_t nal_hevc_read_vps(const struct device *dev, 335 struct nal_hevc_vps *vps, void *src, size_t n); 336 337 ssize_t nal_hevc_write_sps(const struct device *dev, 338 void *dest, size_t n, struct nal_hevc_sps *sps); 339 ssize_t nal_hevc_read_sps(const struct device *dev, 340 struct nal_hevc_sps *sps, void *src, size_t n); 341 342 ssize_t nal_hevc_write_pps(const struct device *dev, 343 void *dest, size_t n, struct nal_hevc_pps *pps); 344 ssize_t nal_hevc_read_pps(const struct device *dev, 345 struct nal_hevc_pps *pps, void *src, size_t n); 346 347 ssize_t nal_hevc_write_filler(const struct device *dev, void *dest, size_t n); 348 ssize_t nal_hevc_read_filler(const struct device *dev, void *src, size_t n); 349 350 #endif /* __NAL_HEVC_H__ */ 351