drivers/media/platform/allegro-dvt/nal-hevc.h

   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/errno.h>
  12 #include <linux/kernel.h>
  13 #include <linux/types.h>
  14 #include <linux/v4l2-controls.h>
  15 #include <linux/videodev2.h>
  16
  17 struct nal_hevc_profile_tier_level {
  18         unsigned int general_profile_space;
  19         unsigned int general_tier_flag;
  20         unsigned int general_profile_idc;
  21         unsigned int general_profile_compatibility_flag[32];
  22         unsigned int general_progressive_source_flag;
  23         unsigned int general_interlaced_source_flag;
  24         unsigned int general_non_packed_constraint_flag;
  25         unsigned int general_frame_only_constraint_flag;
  26         union {
  27                 struct {
  28                         unsigned int general_max_12bit_constraint_flag;
  29                         unsigned int general_max_10bit_constraint_flag;
  30                         unsigned int general_max_8bit_constraint_flag;
  31                         unsigned int general_max_422chroma_constraint_flag;
  32                         unsigned int general_max_420chroma_constraint_flag;
  33                         unsigned int general_max_monochrome_constraint_flag;
  34                         unsigned int general_intra_constraint_flag;
  35                         unsigned int general_one_picture_only_constraint_flag;
  36                         unsigned int general_lower_bit_rate_constraint_flag;
  37                         union {
  38                                 struct {
  39                                         unsigned int general_max_14bit_constraint_flag;
  40                                         unsigned int general_reserved_zero_33bits;
  41                                 };
  42                                 unsigned int general_reserved_zero_34bits;
  43                         };
  44                 };
  45                 struct {
  46                         unsigned int general_reserved_zero_7bits;
  47                         /* unsigned int general_one_picture_only_constraint_flag; */
  48                         unsigned int general_reserved_zero_35bits;
  49                 };
  50                 unsigned int general_reserved_zero_43bits;
  51         };
  52         union {
  53                 unsigned int general_inbld_flag;
  54                 unsigned int general_reserved_zero_bit;
  55         };
  56         unsigned int general_level_idc;
  57 };
  58
  59 /*
  60  * struct nal_hevc_vps - Video parameter set
  61  *
  62  * C struct representation of the video parameter set NAL unit as defined by
  63  * Rec. ITU-T H.265 (02/2018) 7.3.2.1 Video parameter set RBSP syntax
  64  */
  65 struct nal_hevc_vps {
  66         unsigned int video_parameter_set_id;
  67         unsigned int base_layer_internal_flag;
  68         unsigned int base_layer_available_flag;
  69         unsigned int max_layers_minus1;
  70         unsigned int max_sub_layers_minus1;
  71         unsigned int temporal_id_nesting_flag;
  72         struct nal_hevc_profile_tier_level profile_tier_level;
  73         unsigned int sub_layer_ordering_info_present_flag;
  74         struct {
  75                 unsigned int max_dec_pic_buffering_minus1[7];
  76                 unsigned int max_num_reorder_pics[7];
  77                 unsigned int max_latency_increase_plus1[7];
  78         };
  79         unsigned int max_layer_id;
  80         unsigned int num_layer_sets_minus1;
  81         unsigned int layer_id_included_flag[1024][64];
  82         unsigned int timing_info_present_flag;
  83         struct {
  84                 unsigned int num_units_in_tick;
  85                 unsigned int time_scale;
  86                 unsigned int poc_proportional_to_timing_flag;
  87                 unsigned int num_ticks_poc_diff_one_minus1;
  88                 unsigned int num_hrd_parameters;
  89                 struct {
  90                         unsigned int hrd_layer_set_idx[0];
  91                         unsigned int cprms_present_flag[0];
  92                 };
  93                 /* hrd_parameters( cprms_present_flag[ i ], max_sub_layers_minus1 ) */
  94         };
  95         unsigned int extension_flag;
  96         unsigned int extension_data_flag;
  97 };
  98
  99 struct nal_hevc_sub_layer_hrd_parameters {
 100         unsigned int bit_rate_value_minus1[1];
 101         unsigned int cpb_size_value_minus1[1];
 102         unsigned int cbr_flag[1];
 103 };
 104
 105 struct nal_hevc_hrd_parameters {
 106         unsigned int nal_hrd_parameters_present_flag;
 107         unsigned int vcl_hrd_parameters_present_flag;
 108         struct {
 109                 unsigned int sub_pic_hrd_params_present_flag;
 110                 struct {
 111                         unsigned int tick_divisor_minus2;
 112                         unsigned int du_cpb_removal_delay_increment_length_minus1;
 113                         unsigned int sub_pic_cpb_params_in_pic_timing_sei_flag;
 114                         unsigned int dpb_output_delay_du_length_minus1;
 115                 };
 116                 unsigned int bit_rate_scale;
 117                 unsigned int cpb_size_scale;
 118                 unsigned int cpb_size_du_scale;
 119                 unsigned int initial_cpb_removal_delay_length_minus1;
 120                 unsigned int au_cpb_removal_delay_length_minus1;
 121                 unsigned int dpb_output_delay_length_minus1;
 122         };
 123         struct {
 124                 unsigned int fixed_pic_rate_general_flag[1];
 125                 unsigned int fixed_pic_rate_within_cvs_flag[1];
 126                 unsigned int elemental_duration_in_tc_minus1[1];
 127                 unsigned int low_delay_hrd_flag[1];
 128                 unsigned int cpb_cnt_minus1[1];
 129                 struct nal_hevc_sub_layer_hrd_parameters nal_hrd[1];
 130                 struct nal_hevc_sub_layer_hrd_parameters vcl_hrd[1];
 131         };
 132 };
 133
 134 /*
 135  * struct nal_hevc_vui_parameters - VUI parameters
 136  *
 137  * C struct representation of the VUI parameters as defined by Rec. ITU-T
 138  * H.265 (02/2018) E.2.1 VUI parameters syntax.
 139  */
 140 struct nal_hevc_vui_parameters {
 141         unsigned int aspect_ratio_info_present_flag;
 142         struct {
 143                 unsigned int aspect_ratio_idc;
 144                 unsigned int sar_width;
 145                 unsigned int sar_height;
 146         };
 147         unsigned int overscan_info_present_flag;
 148         unsigned int overscan_appropriate_flag;
 149         unsigned int video_signal_type_present_flag;
 150         struct {
 151                 unsigned int video_format;
 152                 unsigned int video_full_range_flag;
 153                 unsigned int colour_description_present_flag;
 154                 struct {
 155                         unsigned int colour_primaries;
 156                         unsigned int transfer_characteristics;
 157                         unsigned int matrix_coeffs;
 158                 };
 159         };
 160         unsigned int chroma_loc_info_present_flag;
 161         struct {
 162                 unsigned int chroma_sample_loc_type_top_field;
 163                 unsigned int chroma_sample_loc_type_bottom_field;
 164         };
 165         unsigned int neutral_chroma_indication_flag;
 166         unsigned int field_seq_flag;
 167         unsigned int frame_field_info_present_flag;
 168         unsigned int default_display_window_flag;
 169         struct {
 170                 unsigned int def_disp_win_left_offset;
 171                 unsigned int def_disp_win_right_offset;
 172                 unsigned int def_disp_win_top_offset;
 173                 unsigned int def_disp_win_bottom_offset;
 174         };
 175         unsigned int vui_timing_info_present_flag;
 176         struct {
 177                 unsigned int vui_num_units_in_tick;
 178                 unsigned int vui_time_scale;
 179                 unsigned int vui_poc_proportional_to_timing_flag;
 180                 unsigned int vui_num_ticks_poc_diff_one_minus1;
 181                 unsigned int vui_hrd_parameters_present_flag;
 182                 struct nal_hevc_hrd_parameters nal_hrd_parameters;
 183         };
 184         unsigned int bitstream_restriction_flag;
 185         struct {
 186                 unsigned int tiles_fixed_structure_flag;
 187                 unsigned int motion_vectors_over_pic_boundaries_flag;
 188                 unsigned int restricted_ref_pic_lists_flag;
 189                 unsigned int min_spatial_segmentation_idc;
 190                 unsigned int max_bytes_per_pic_denom;
 191                 unsigned int max_bits_per_min_cu_denom;
 192                 unsigned int log2_max_mv_length_horizontal;
 193                 unsigned int log2_max_mv_length_vertical;
 194         };
 195 };
 196
 197 /*
 198  * struct nal_hevc_sps - Sequence parameter set
 199  *
 200  * C struct representation of the video parameter set NAL unit as defined by
 201  * Rec. ITU-T H.265 (02/2018) 7.3.2.2 Sequence parameter set RBSP syntax
 202  */
 203 struct nal_hevc_sps {
 204         unsigned int video_parameter_set_id;
 205         unsigned int max_sub_layers_minus1;
 206         unsigned int temporal_id_nesting_flag;
 207         struct nal_hevc_profile_tier_level profile_tier_level;
 208         unsigned int seq_parameter_set_id;
 209         unsigned int chroma_format_idc;
 210         unsigned int separate_colour_plane_flag;
 211         unsigned int pic_width_in_luma_samples;
 212         unsigned int pic_height_in_luma_samples;
 213         unsigned int conformance_window_flag;
 214         struct {
 215                 unsigned int conf_win_left_offset;
 216                 unsigned int conf_win_right_offset;
 217                 unsigned int conf_win_top_offset;
 218                 unsigned int conf_win_bottom_offset;
 219         };
 220
 221         unsigned int bit_depth_luma_minus8;
 222         unsigned int bit_depth_chroma_minus8;
 223         unsigned int log2_max_pic_order_cnt_lsb_minus4;
 224         unsigned int sub_layer_ordering_info_present_flag;
 225         struct {
 226                 unsigned int max_dec_pic_buffering_minus1[7];
 227                 unsigned int max_num_reorder_pics[7];
 228                 unsigned int max_latency_increase_plus1[7];
 229         };
 230         unsigned int log2_min_luma_coding_block_size_minus3;
 231         unsigned int log2_diff_max_min_luma_coding_block_size;
 232         unsigned int log2_min_luma_transform_block_size_minus2;
 233         unsigned int log2_diff_max_min_luma_transform_block_size;
 234         unsigned int max_transform_hierarchy_depth_inter;
 235         unsigned int max_transform_hierarchy_depth_intra;
 236
 237         unsigned int scaling_list_enabled_flag;
 238         unsigned int scaling_list_data_present_flag;
 239         unsigned int amp_enabled_flag;
 240         unsigned int sample_adaptive_offset_enabled_flag;
 241         unsigned int pcm_enabled_flag;
 242         struct {
 243                 unsigned int pcm_sample_bit_depth_luma_minus1;
 244                 unsigned int pcm_sample_bit_depth_chroma_minus1;
 245                 unsigned int log2_min_pcm_luma_coding_block_size_minus3;
 246                 unsigned int log2_diff_max_min_pcm_luma_coding_block_size;
 247                 unsigned int pcm_loop_filter_disabled_flag;
 248         };
 249
 250         unsigned int num_short_term_ref_pic_sets;
 251         unsigned int long_term_ref_pics_present_flag;
 252         unsigned int sps_temporal_mvp_enabled_flag;
 253         unsigned int strong_intra_smoothing_enabled_flag;
 254         unsigned int vui_parameters_present_flag;
 255         struct nal_hevc_vui_parameters vui;
 256         unsigned int extension_present_flag;
 257         struct {
 258                 unsigned int sps_range_extension_flag;
 259                 unsigned int sps_multilayer_extension_flag;
 260                 unsigned int sps_3d_extension_flag;
 261                 unsigned int sps_scc_extension_flag;
 262                 unsigned int sps_extension_4bits;
 263         };
 264 };
 265
 266 struct nal_hevc_pps {
 267         unsigned int pps_pic_parameter_set_id;
 268         unsigned int pps_seq_parameter_set_id;
 269         unsigned int dependent_slice_segments_enabled_flag;
 270         unsigned int output_flag_present_flag;
 271         unsigned int num_extra_slice_header_bits;
 272         unsigned int sign_data_hiding_enabled_flag;
 273         unsigned int cabac_init_present_flag;
 274         unsigned int num_ref_idx_l0_default_active_minus1;
 275         unsigned int num_ref_idx_l1_default_active_minus1;
 276         int init_qp_minus26;
 277         unsigned int constrained_intra_pred_flag;
 278         unsigned int transform_skip_enabled_flag;
 279         unsigned int cu_qp_delta_enabled_flag;
 280         unsigned int diff_cu_qp_delta_depth;
 281         int pps_cb_qp_offset;
 282         int pps_cr_qp_offset;
 283         unsigned int pps_slice_chroma_qp_offsets_present_flag;
 284         unsigned int weighted_pred_flag;
 285         unsigned int weighted_bipred_flag;
 286         unsigned int transquant_bypass_enabled_flag;
 287         unsigned int tiles_enabled_flag;
 288         unsigned int entropy_coding_sync_enabled_flag;
 289         struct {
 290                 unsigned int num_tile_columns_minus1;
 291                 unsigned int num_tile_rows_minus1;
 292                 unsigned int uniform_spacing_flag;
 293                 struct {
 294                         unsigned int column_width_minus1[1];
 295                         unsigned int row_height_minus1[1];
 296                 };
 297                 unsigned int loop_filter_across_tiles_enabled_flag;
 298         };
 299         unsigned int pps_loop_filter_across_slices_enabled_flag;
 300         unsigned int deblocking_filter_control_present_flag;
 301         struct {
 302                 unsigned int deblocking_filter_override_enabled_flag;
 303                 unsigned int pps_deblocking_filter_disabled_flag;
 304                 struct {
 305                         int pps_beta_offset_div2;
 306                         int pps_tc_offset_div2;
 307                 };
 308         };
 309         unsigned int pps_scaling_list_data_present_flag;
 310         unsigned int lists_modification_present_flag;
 311         unsigned int log2_parallel_merge_level_minus2;
 312         unsigned int slice_segment_header_extension_present_flag;
 313         unsigned int pps_extension_present_flag;
 314         struct {
 315                 unsigned int pps_range_extension_flag;
 316                 unsigned int pps_multilayer_extension_flag;
 317                 unsigned int pps_3d_extension_flag;
 318                 unsigned int pps_scc_extension_flag;
 319                 unsigned int pps_extension_4bits;
 320         };
 321 };
 322
 323 /**
 324  * nal_hevc_profile() - Get profile_idc for v4l2 hevc profile
 325  * @profile: the profile as &enum v4l2_mpeg_video_hevc_profile
 326  *
 327  * Convert the &enum v4l2_mpeg_video_hevc_profile to profile_idc as specified
 328  * in Rec. ITU-T H.265 (02/2018) A.3.
 329  *
 330  * Return: the profile_idc for the passed level
 331  */
 332 static inline int nal_hevc_profile(enum v4l2_mpeg_video_hevc_profile profile)
 333 {
 334         switch (profile) {
 335         case V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN:
 336                 return 1;
 337         case V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_10:
 338                 return 2;
 339         case V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_STILL_PICTURE:
 340                 return 3;
 341         default:
 342                 return -EINVAL;
 343         }
 344 }
 345
 346 /**
 347  * nal_hevc_tier() - Get tier_flag for v4l2 hevc tier
 348  * @tier: the tier as &enum v4l2_mpeg_video_hevc_tier
 349  *
 350  * Convert the &enum v4l2_mpeg_video_hevc_tier to tier_flag as specified
 351  * in Rec. ITU-T H.265 (02/2018) A.4.1.
 352  *
 353  * Return: the tier_flag for the passed tier
 354  */
 355 static inline int nal_hevc_tier(enum v4l2_mpeg_video_hevc_tier tier)
 356 {
 357         switch (tier) {
 358         case V4L2_MPEG_VIDEO_HEVC_TIER_MAIN:
 359                 return 0;
 360         case V4L2_MPEG_VIDEO_HEVC_TIER_HIGH:
 361                 return 1;
 362         default:
 363                 return -EINVAL;
 364         }
 365 }
 366
 367 /**
 368  * nal_hevc_level() - Get level_idc for v4l2 hevc level
 369  * @level: the level as &enum v4l2_mpeg_video_hevc_level
 370  *
 371  * Convert the &enum v4l2_mpeg_video_hevc_level to level_idc as specified in
 372  * Rec. ITU-T H.265 (02/2018) A.4.1.
 373  *
 374  * Return: the level_idc for the passed level
 375  */
 376 static inline int nal_hevc_level(enum v4l2_mpeg_video_hevc_level level)
 377 {
 378         /*
 379          * T-Rec-H.265 p. 280: general_level_idc and sub_layer_level_idc[ i ]
 380          * shall be set equal to a value of 30 times the level number
 381          * specified in Table A.6.
 382          */
 383         int factor = 30 / 10;
 384
 385         switch (level) {
 386         case V4L2_MPEG_VIDEO_HEVC_LEVEL_1:
 387                 return factor * 10;
 388         case V4L2_MPEG_VIDEO_HEVC_LEVEL_2:
 389                 return factor * 20;
 390         case V4L2_MPEG_VIDEO_HEVC_LEVEL_2_1:
 391                 return factor * 21;
 392         case V4L2_MPEG_VIDEO_HEVC_LEVEL_3:
 393                 return factor * 30;
 394         case V4L2_MPEG_VIDEO_HEVC_LEVEL_3_1:
 395                 return factor * 31;
 396         case V4L2_MPEG_VIDEO_HEVC_LEVEL_4:
 397                 return factor * 40;
 398         case V4L2_MPEG_VIDEO_HEVC_LEVEL_4_1:
 399                 return factor * 41;
 400         case V4L2_MPEG_VIDEO_HEVC_LEVEL_5:
 401                 return factor * 50;
 402         case V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1:
 403                 return factor * 51;
 404         case V4L2_MPEG_VIDEO_HEVC_LEVEL_5_2:
 405                 return factor * 52;
 406         case V4L2_MPEG_VIDEO_HEVC_LEVEL_6:
 407                 return factor * 60;
 408         case V4L2_MPEG_VIDEO_HEVC_LEVEL_6_1:
 409                 return factor * 61;
 410         case V4L2_MPEG_VIDEO_HEVC_LEVEL_6_2:
 411                 return factor * 62;
 412         default:
 413                 return -EINVAL;
 414         }
 415 }
 416
 417 static inline int nal_hevc_full_range(enum v4l2_quantization quantization)
 418 {
 419         switch (quantization) {
 420         case V4L2_QUANTIZATION_FULL_RANGE:
 421                 return 1;
 422         case V4L2_QUANTIZATION_LIM_RANGE:
 423                 return 0;
 424         default:
 425                 break;
 426         }
 427
 428         return 0;
 429 }
 430
 431 static inline int nal_hevc_color_primaries(enum v4l2_colorspace colorspace)
 432 {
 433         switch (colorspace) {
 434         case V4L2_COLORSPACE_SMPTE170M:
 435                 return 6;
 436         case V4L2_COLORSPACE_SMPTE240M:
 437                 return 7;
 438         case V4L2_COLORSPACE_REC709:
 439                 return 1;
 440         case V4L2_COLORSPACE_470_SYSTEM_M:
 441                 return 4;
 442         case V4L2_COLORSPACE_JPEG:
 443         case V4L2_COLORSPACE_SRGB:
 444         case V4L2_COLORSPACE_470_SYSTEM_BG:
 445                 return 5;
 446         case V4L2_COLORSPACE_BT2020:
 447                 return 9;
 448         case V4L2_COLORSPACE_DEFAULT:
 449         case V4L2_COLORSPACE_OPRGB:
 450         case V4L2_COLORSPACE_RAW:
 451         case V4L2_COLORSPACE_DCI_P3:
 452         default:
 453                 return 2;
 454         }
 455 }
 456
 457 static inline int nal_hevc_transfer_characteristics(enum v4l2_colorspace colorspace,
 458                                                     enum v4l2_xfer_func xfer_func)
 459 {
 460         if (xfer_func == V4L2_XFER_FUNC_DEFAULT)
 461                 xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(colorspace);
 462
 463         switch (xfer_func) {
 464         case V4L2_XFER_FUNC_709:
 465                 return 6;
 466         case V4L2_XFER_FUNC_SMPTE2084:
 467                 return 16;
 468         case V4L2_XFER_FUNC_SRGB:
 469         case V4L2_XFER_FUNC_OPRGB:
 470         case V4L2_XFER_FUNC_NONE:
 471         case V4L2_XFER_FUNC_DCI_P3:
 472         case V4L2_XFER_FUNC_SMPTE240M:
 473         default:
 474                 return 2;
 475         }
 476 }
 477
 478 static inline int nal_hevc_matrix_coeffs(enum v4l2_colorspace colorspace,
 479                                          enum v4l2_ycbcr_encoding ycbcr_encoding)
 480 {
 481         if (ycbcr_encoding == V4L2_YCBCR_ENC_DEFAULT)
 482                 ycbcr_encoding = V4L2_MAP_YCBCR_ENC_DEFAULT(colorspace);
 483
 484         switch (ycbcr_encoding) {
 485         case V4L2_YCBCR_ENC_601:
 486         case V4L2_YCBCR_ENC_XV601:
 487                 return 5;
 488         case V4L2_YCBCR_ENC_709:
 489         case V4L2_YCBCR_ENC_XV709:
 490                 return 1;
 491         case V4L2_YCBCR_ENC_BT2020:
 492                 return 9;
 493         case V4L2_YCBCR_ENC_BT2020_CONST_LUM:
 494                 return 10;
 495         case V4L2_YCBCR_ENC_SMPTE240M:
 496         default:
 497                 return 2;
 498         }
 499 }
 500
 501 ssize_t nal_hevc_write_vps(const struct device *dev,
 502                            void *dest, size_t n, struct nal_hevc_vps *vps);
 503 ssize_t nal_hevc_read_vps(const struct device *dev,
 504                           struct nal_hevc_vps *vps, void *src, size_t n);
 505
 506 ssize_t nal_hevc_write_sps(const struct device *dev,
 507                            void *dest, size_t n, struct nal_hevc_sps *sps);
 508 ssize_t nal_hevc_read_sps(const struct device *dev,
 509                           struct nal_hevc_sps *sps, void *src, size_t n);
 510
 511 ssize_t nal_hevc_write_pps(const struct device *dev,
 512                            void *dest, size_t n, struct nal_hevc_pps *pps);
 513 ssize_t nal_hevc_read_pps(const struct device *dev,
 514                           struct nal_hevc_pps *pps, void *src, size_t n);
 515
 516 ssize_t nal_hevc_write_filler(const struct device *dev, void *dest, size_t n);
 517 ssize_t nal_hevc_read_filler(const struct device *dev, void *src, size_t n);
 518
 519 #endif /* __NAL_HEVC_H__ */