| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Copyright (C) 2019 Pengutronix, Michael Tretter <kernel@pengutronix.de> |
| * |
| * Convert NAL units between raw byte sequence payloads (RBSP) and C structs. |
| */ |
| |
| #ifndef __NAL_HEVC_H__ |
| #define __NAL_HEVC_H__ |
| |
| #include <linux/errno.h> |
| #include <linux/kernel.h> |
| #include <linux/types.h> |
| #include <linux/v4l2-controls.h> |
| #include <linux/videodev2.h> |
| |
| 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; |
| }; |
| |
| struct nal_hevc_sub_layer_hrd_parameters { |
| unsigned int bit_rate_value_minus1[1]; |
| unsigned int cpb_size_value_minus1[1]; |
| unsigned int cbr_flag[1]; |
| }; |
| |
| 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__ */ |
