520 lines
16 KiB
C
520 lines
16 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2019 Pengutronix, Michael Tretter <kernel@pengutronix.de>
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*
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* Convert NAL units between raw byte sequence payloads (RBSP) and C structs.
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*/
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#ifndef __NAL_HEVC_H__
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#define __NAL_HEVC_H__
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/v4l2-controls.h>
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#include <linux/videodev2.h>
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struct nal_hevc_profile_tier_level {
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unsigned int general_profile_space;
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unsigned int general_tier_flag;
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unsigned int general_profile_idc;
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unsigned int general_profile_compatibility_flag[32];
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unsigned int general_progressive_source_flag;
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unsigned int general_interlaced_source_flag;
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unsigned int general_non_packed_constraint_flag;
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unsigned int general_frame_only_constraint_flag;
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union {
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struct {
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unsigned int general_max_12bit_constraint_flag;
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unsigned int general_max_10bit_constraint_flag;
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unsigned int general_max_8bit_constraint_flag;
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unsigned int general_max_422chroma_constraint_flag;
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unsigned int general_max_420chroma_constraint_flag;
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unsigned int general_max_monochrome_constraint_flag;
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unsigned int general_intra_constraint_flag;
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unsigned int general_one_picture_only_constraint_flag;
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unsigned int general_lower_bit_rate_constraint_flag;
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union {
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struct {
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unsigned int general_max_14bit_constraint_flag;
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unsigned int general_reserved_zero_33bits;
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};
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unsigned int general_reserved_zero_34bits;
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};
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};
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struct {
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unsigned int general_reserved_zero_7bits;
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/* unsigned int general_one_picture_only_constraint_flag; */
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unsigned int general_reserved_zero_35bits;
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};
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unsigned int general_reserved_zero_43bits;
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};
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union {
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unsigned int general_inbld_flag;
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unsigned int general_reserved_zero_bit;
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};
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unsigned int general_level_idc;
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};
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/*
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* struct nal_hevc_vps - Video parameter set
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*
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* C struct representation of the video parameter set NAL unit as defined by
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* Rec. ITU-T H.265 (02/2018) 7.3.2.1 Video parameter set RBSP syntax
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*/
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struct nal_hevc_vps {
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unsigned int video_parameter_set_id;
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unsigned int base_layer_internal_flag;
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unsigned int base_layer_available_flag;
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unsigned int max_layers_minus1;
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unsigned int max_sub_layers_minus1;
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unsigned int temporal_id_nesting_flag;
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struct nal_hevc_profile_tier_level profile_tier_level;
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unsigned int sub_layer_ordering_info_present_flag;
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struct {
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unsigned int max_dec_pic_buffering_minus1[7];
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unsigned int max_num_reorder_pics[7];
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unsigned int max_latency_increase_plus1[7];
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};
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unsigned int max_layer_id;
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unsigned int num_layer_sets_minus1;
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unsigned int layer_id_included_flag[1024][64];
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unsigned int timing_info_present_flag;
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struct {
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unsigned int num_units_in_tick;
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unsigned int time_scale;
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unsigned int poc_proportional_to_timing_flag;
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unsigned int num_ticks_poc_diff_one_minus1;
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unsigned int num_hrd_parameters;
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struct {
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unsigned int hrd_layer_set_idx[0];
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unsigned int cprms_present_flag[0];
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};
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/* hrd_parameters( cprms_present_flag[ i ], max_sub_layers_minus1 ) */
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};
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unsigned int extension_flag;
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unsigned int extension_data_flag;
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};
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struct nal_hevc_sub_layer_hrd_parameters {
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unsigned int bit_rate_value_minus1[1];
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unsigned int cpb_size_value_minus1[1];
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unsigned int cbr_flag[1];
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};
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struct nal_hevc_hrd_parameters {
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unsigned int nal_hrd_parameters_present_flag;
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unsigned int vcl_hrd_parameters_present_flag;
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struct {
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unsigned int sub_pic_hrd_params_present_flag;
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struct {
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unsigned int tick_divisor_minus2;
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unsigned int du_cpb_removal_delay_increment_length_minus1;
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unsigned int sub_pic_cpb_params_in_pic_timing_sei_flag;
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unsigned int dpb_output_delay_du_length_minus1;
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};
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unsigned int bit_rate_scale;
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unsigned int cpb_size_scale;
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unsigned int cpb_size_du_scale;
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unsigned int initial_cpb_removal_delay_length_minus1;
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unsigned int au_cpb_removal_delay_length_minus1;
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unsigned int dpb_output_delay_length_minus1;
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};
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struct {
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unsigned int fixed_pic_rate_general_flag[1];
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unsigned int fixed_pic_rate_within_cvs_flag[1];
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unsigned int elemental_duration_in_tc_minus1[1];
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unsigned int low_delay_hrd_flag[1];
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unsigned int cpb_cnt_minus1[1];
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struct nal_hevc_sub_layer_hrd_parameters nal_hrd[1];
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struct nal_hevc_sub_layer_hrd_parameters vcl_hrd[1];
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};
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};
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/*
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* struct nal_hevc_vui_parameters - VUI parameters
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*
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* C struct representation of the VUI parameters as defined by Rec. ITU-T
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* H.265 (02/2018) E.2.1 VUI parameters syntax.
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*/
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struct nal_hevc_vui_parameters {
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unsigned int aspect_ratio_info_present_flag;
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struct {
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unsigned int aspect_ratio_idc;
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unsigned int sar_width;
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unsigned int sar_height;
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};
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unsigned int overscan_info_present_flag;
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unsigned int overscan_appropriate_flag;
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unsigned int video_signal_type_present_flag;
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struct {
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unsigned int video_format;
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unsigned int video_full_range_flag;
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unsigned int colour_description_present_flag;
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struct {
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unsigned int colour_primaries;
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unsigned int transfer_characteristics;
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unsigned int matrix_coeffs;
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};
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};
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unsigned int chroma_loc_info_present_flag;
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struct {
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unsigned int chroma_sample_loc_type_top_field;
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unsigned int chroma_sample_loc_type_bottom_field;
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};
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unsigned int neutral_chroma_indication_flag;
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unsigned int field_seq_flag;
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unsigned int frame_field_info_present_flag;
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unsigned int default_display_window_flag;
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struct {
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unsigned int def_disp_win_left_offset;
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unsigned int def_disp_win_right_offset;
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unsigned int def_disp_win_top_offset;
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unsigned int def_disp_win_bottom_offset;
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};
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unsigned int vui_timing_info_present_flag;
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struct {
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unsigned int vui_num_units_in_tick;
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unsigned int vui_time_scale;
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unsigned int vui_poc_proportional_to_timing_flag;
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unsigned int vui_num_ticks_poc_diff_one_minus1;
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unsigned int vui_hrd_parameters_present_flag;
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struct nal_hevc_hrd_parameters nal_hrd_parameters;
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};
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unsigned int bitstream_restriction_flag;
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struct {
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unsigned int tiles_fixed_structure_flag;
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unsigned int motion_vectors_over_pic_boundaries_flag;
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unsigned int restricted_ref_pic_lists_flag;
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unsigned int min_spatial_segmentation_idc;
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unsigned int max_bytes_per_pic_denom;
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unsigned int max_bits_per_min_cu_denom;
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unsigned int log2_max_mv_length_horizontal;
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unsigned int log2_max_mv_length_vertical;
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};
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};
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/*
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* struct nal_hevc_sps - Sequence parameter set
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*
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* C struct representation of the video parameter set NAL unit as defined by
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* Rec. ITU-T H.265 (02/2018) 7.3.2.2 Sequence parameter set RBSP syntax
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*/
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struct nal_hevc_sps {
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unsigned int video_parameter_set_id;
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unsigned int max_sub_layers_minus1;
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unsigned int temporal_id_nesting_flag;
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struct nal_hevc_profile_tier_level profile_tier_level;
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unsigned int seq_parameter_set_id;
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unsigned int chroma_format_idc;
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unsigned int separate_colour_plane_flag;
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unsigned int pic_width_in_luma_samples;
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unsigned int pic_height_in_luma_samples;
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unsigned int conformance_window_flag;
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struct {
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unsigned int conf_win_left_offset;
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unsigned int conf_win_right_offset;
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unsigned int conf_win_top_offset;
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unsigned int conf_win_bottom_offset;
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};
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unsigned int bit_depth_luma_minus8;
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unsigned int bit_depth_chroma_minus8;
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unsigned int log2_max_pic_order_cnt_lsb_minus4;
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unsigned int sub_layer_ordering_info_present_flag;
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struct {
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unsigned int max_dec_pic_buffering_minus1[7];
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unsigned int max_num_reorder_pics[7];
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unsigned int max_latency_increase_plus1[7];
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};
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unsigned int log2_min_luma_coding_block_size_minus3;
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unsigned int log2_diff_max_min_luma_coding_block_size;
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unsigned int log2_min_luma_transform_block_size_minus2;
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unsigned int log2_diff_max_min_luma_transform_block_size;
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unsigned int max_transform_hierarchy_depth_inter;
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unsigned int max_transform_hierarchy_depth_intra;
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unsigned int scaling_list_enabled_flag;
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unsigned int scaling_list_data_present_flag;
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unsigned int amp_enabled_flag;
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unsigned int sample_adaptive_offset_enabled_flag;
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unsigned int pcm_enabled_flag;
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struct {
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unsigned int pcm_sample_bit_depth_luma_minus1;
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unsigned int pcm_sample_bit_depth_chroma_minus1;
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unsigned int log2_min_pcm_luma_coding_block_size_minus3;
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unsigned int log2_diff_max_min_pcm_luma_coding_block_size;
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unsigned int pcm_loop_filter_disabled_flag;
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};
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unsigned int num_short_term_ref_pic_sets;
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unsigned int long_term_ref_pics_present_flag;
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unsigned int sps_temporal_mvp_enabled_flag;
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unsigned int strong_intra_smoothing_enabled_flag;
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unsigned int vui_parameters_present_flag;
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struct nal_hevc_vui_parameters vui;
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unsigned int extension_present_flag;
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struct {
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unsigned int sps_range_extension_flag;
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unsigned int sps_multilayer_extension_flag;
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unsigned int sps_3d_extension_flag;
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unsigned int sps_scc_extension_flag;
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unsigned int sps_extension_4bits;
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};
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};
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struct nal_hevc_pps {
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unsigned int pps_pic_parameter_set_id;
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unsigned int pps_seq_parameter_set_id;
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unsigned int dependent_slice_segments_enabled_flag;
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unsigned int output_flag_present_flag;
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unsigned int num_extra_slice_header_bits;
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unsigned int sign_data_hiding_enabled_flag;
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unsigned int cabac_init_present_flag;
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unsigned int num_ref_idx_l0_default_active_minus1;
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unsigned int num_ref_idx_l1_default_active_minus1;
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int init_qp_minus26;
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unsigned int constrained_intra_pred_flag;
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unsigned int transform_skip_enabled_flag;
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unsigned int cu_qp_delta_enabled_flag;
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unsigned int diff_cu_qp_delta_depth;
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int pps_cb_qp_offset;
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int pps_cr_qp_offset;
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unsigned int pps_slice_chroma_qp_offsets_present_flag;
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unsigned int weighted_pred_flag;
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unsigned int weighted_bipred_flag;
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unsigned int transquant_bypass_enabled_flag;
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unsigned int tiles_enabled_flag;
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unsigned int entropy_coding_sync_enabled_flag;
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struct {
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unsigned int num_tile_columns_minus1;
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unsigned int num_tile_rows_minus1;
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unsigned int uniform_spacing_flag;
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struct {
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unsigned int column_width_minus1[1];
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unsigned int row_height_minus1[1];
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};
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unsigned int loop_filter_across_tiles_enabled_flag;
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};
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unsigned int pps_loop_filter_across_slices_enabled_flag;
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unsigned int deblocking_filter_control_present_flag;
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struct {
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unsigned int deblocking_filter_override_enabled_flag;
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unsigned int pps_deblocking_filter_disabled_flag;
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struct {
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int pps_beta_offset_div2;
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int pps_tc_offset_div2;
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};
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};
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unsigned int pps_scaling_list_data_present_flag;
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unsigned int lists_modification_present_flag;
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unsigned int log2_parallel_merge_level_minus2;
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unsigned int slice_segment_header_extension_present_flag;
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unsigned int pps_extension_present_flag;
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struct {
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unsigned int pps_range_extension_flag;
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unsigned int pps_multilayer_extension_flag;
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unsigned int pps_3d_extension_flag;
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unsigned int pps_scc_extension_flag;
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unsigned int pps_extension_4bits;
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};
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};
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/**
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* nal_hevc_profile() - Get profile_idc for v4l2 hevc profile
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* @profile: the profile as &enum v4l2_mpeg_video_hevc_profile
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*
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* Convert the &enum v4l2_mpeg_video_hevc_profile to profile_idc as specified
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* in Rec. ITU-T H.265 (02/2018) A.3.
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*
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* Return: the profile_idc for the passed level
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*/
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static inline int nal_hevc_profile(enum v4l2_mpeg_video_hevc_profile profile)
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{
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switch (profile) {
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case V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN:
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return 1;
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case V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_10:
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return 2;
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case V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_STILL_PICTURE:
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return 3;
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default:
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return -EINVAL;
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}
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}
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/**
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* nal_hevc_tier() - Get tier_flag for v4l2 hevc tier
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* @tier: the tier as &enum v4l2_mpeg_video_hevc_tier
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*
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* Convert the &enum v4l2_mpeg_video_hevc_tier to tier_flag as specified
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* in Rec. ITU-T H.265 (02/2018) A.4.1.
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*
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* Return: the tier_flag for the passed tier
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*/
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static inline int nal_hevc_tier(enum v4l2_mpeg_video_hevc_tier tier)
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{
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switch (tier) {
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case V4L2_MPEG_VIDEO_HEVC_TIER_MAIN:
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return 0;
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case V4L2_MPEG_VIDEO_HEVC_TIER_HIGH:
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return 1;
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default:
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return -EINVAL;
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}
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}
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/**
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* nal_hevc_level() - Get level_idc for v4l2 hevc level
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* @level: the level as &enum v4l2_mpeg_video_hevc_level
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*
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* Convert the &enum v4l2_mpeg_video_hevc_level to level_idc as specified in
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* Rec. ITU-T H.265 (02/2018) A.4.1.
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*
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* Return: the level_idc for the passed level
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*/
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static inline int nal_hevc_level(enum v4l2_mpeg_video_hevc_level level)
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{
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/*
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* T-Rec-H.265 p. 280: general_level_idc and sub_layer_level_idc[ i ]
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* shall be set equal to a value of 30 times the level number
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* specified in Table A.6.
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*/
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int factor = 30 / 10;
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switch (level) {
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case V4L2_MPEG_VIDEO_HEVC_LEVEL_1:
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return factor * 10;
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case V4L2_MPEG_VIDEO_HEVC_LEVEL_2:
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return factor * 20;
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case V4L2_MPEG_VIDEO_HEVC_LEVEL_2_1:
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return factor * 21;
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case V4L2_MPEG_VIDEO_HEVC_LEVEL_3:
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return factor * 30;
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case V4L2_MPEG_VIDEO_HEVC_LEVEL_3_1:
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return factor * 31;
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case V4L2_MPEG_VIDEO_HEVC_LEVEL_4:
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return factor * 40;
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case V4L2_MPEG_VIDEO_HEVC_LEVEL_4_1:
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return factor * 41;
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case V4L2_MPEG_VIDEO_HEVC_LEVEL_5:
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return factor * 50;
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case V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1:
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return factor * 51;
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case V4L2_MPEG_VIDEO_HEVC_LEVEL_5_2:
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return factor * 52;
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case V4L2_MPEG_VIDEO_HEVC_LEVEL_6:
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return factor * 60;
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case V4L2_MPEG_VIDEO_HEVC_LEVEL_6_1:
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return factor * 61;
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case V4L2_MPEG_VIDEO_HEVC_LEVEL_6_2:
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return factor * 62;
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default:
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return -EINVAL;
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}
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}
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static inline int nal_hevc_full_range(enum v4l2_quantization quantization)
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{
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switch (quantization) {
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case V4L2_QUANTIZATION_FULL_RANGE:
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return 1;
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case V4L2_QUANTIZATION_LIM_RANGE:
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return 0;
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default:
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break;
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}
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return 0;
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}
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static inline int nal_hevc_color_primaries(enum v4l2_colorspace colorspace)
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{
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switch (colorspace) {
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case V4L2_COLORSPACE_SMPTE170M:
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return 6;
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case V4L2_COLORSPACE_SMPTE240M:
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return 7;
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case V4L2_COLORSPACE_REC709:
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return 1;
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case V4L2_COLORSPACE_470_SYSTEM_M:
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return 4;
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case V4L2_COLORSPACE_JPEG:
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case V4L2_COLORSPACE_SRGB:
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case V4L2_COLORSPACE_470_SYSTEM_BG:
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return 5;
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case V4L2_COLORSPACE_BT2020:
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return 9;
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case V4L2_COLORSPACE_DEFAULT:
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case V4L2_COLORSPACE_OPRGB:
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case V4L2_COLORSPACE_RAW:
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case V4L2_COLORSPACE_DCI_P3:
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default:
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return 2;
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}
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}
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static inline int nal_hevc_transfer_characteristics(enum v4l2_colorspace colorspace,
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enum v4l2_xfer_func xfer_func)
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{
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if (xfer_func == V4L2_XFER_FUNC_DEFAULT)
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xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(colorspace);
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switch (xfer_func) {
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case V4L2_XFER_FUNC_709:
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return 6;
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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__ */
|