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/*
** Copyright (c) 2019-2021 The Khronos Group Inc.
**
** SPDX-License-Identifier: Apache-2.0
*/

#ifndef VULKAN_VIDEO_CODEC_H265STD_H_
#define VULKAN_VIDEO_CODEC_H265STD_H_ 1

#ifdef __cplusplus
extern "C" {
#endif

#include "vk_video/vulkan_video_codecs_common.h"

// Vulkan 0.5 version number WIP
#define VK_STD_VULKAN_VIDEO_CODEC_H265_API_VERSION_0_9_5 VK_MAKE_VIDEO_STD_VERSION(0, 9, 5) // Patch version should always be set to 0

// Format must be in the form XX.XX where the first two digits are the major and the second two, the minor.
#define VK_STD_VULKAN_VIDEO_CODEC_H265_SPEC_VERSION   VK_STD_VULKAN_VIDEO_CODEC_H265_API_VERSION_0_9_5
#define VK_STD_VULKAN_VIDEO_CODEC_H265_EXTENSION_NAME "VK_STD_vulkan_video_codec_h265"

#define STD_VIDEO_H265_CPB_CNT_LIST_SIZE 32
#define STD_VIDEO_H265_SUBLAYERS_MINUS1_LIST_SIZE 7
#define STD_VIDEO_H265_SCALING_LIST_4X4_NUM_LISTS 6
#define STD_VIDEO_H265_SCALING_LIST_4X4_NUM_ELEMENTS 16
#define STD_VIDEO_H265_SCALING_LIST_8X8_NUM_LISTS 6
#define STD_VIDEO_H265_SCALING_LIST_8X8_NUM_ELEMENTS 64
#define STD_VIDEO_H265_SCALING_LIST_16X16_NUM_LISTS 6
#define STD_VIDEO_H265_SCALING_LIST_16X16_NUM_ELEMENTS 64
#define STD_VIDEO_H265_SCALING_LIST_32X32_NUM_LISTS 2
#define STD_VIDEO_H265_SCALING_LIST_32X32_NUM_ELEMENTS 64
#define STD_VIDEO_H265_CHROMA_QP_OFFSET_LIST_SIZE 6
#define STD_VIDEO_H265_CHROMA_QP_OFFSET_TILE_COLS_LIST_SIZE 19
#define STD_VIDEO_H265_CHROMA_QP_OFFSET_TILE_ROWS_LIST_SIZE 21
#define STD_VIDEO_H265_PREDICTOR_PALETTE_COMPONENTS_LIST_SIZE 3
#define STD_VIDEO_H265_PREDICTOR_PALETTE_COMP_ENTRIES_LIST_SIZE 128

typedef enum StdVideoH265ChromaFormatIdc {
    STD_VIDEO_H265_CHROMA_FORMAT_IDC_MONOCHROME  = 0,
    STD_VIDEO_H265_CHROMA_FORMAT_IDC_420         = 1,
    STD_VIDEO_H265_CHROMA_FORMAT_IDC_422         = 2,
    STD_VIDEO_H265_CHROMA_FORMAT_IDC_444         = 3,
    STD_VIDEO_H265_CHROMA_FORMAT_IDC_INVALID     = 0x7FFFFFFF
} StdVideoH265ChromaFormatIdc;

typedef enum StdVideoH265ProfileIdc {
    STD_VIDEO_H265_PROFILE_IDC_MAIN                     = 1,
    STD_VIDEO_H265_PROFILE_IDC_MAIN_10                  = 2,
    STD_VIDEO_H265_PROFILE_IDC_MAIN_STILL_PICTURE       = 3,
    STD_VIDEO_H265_PROFILE_IDC_FORMAT_RANGE_EXTENSIONS  = 4,
    STD_VIDEO_H265_PROFILE_IDC_SCC_EXTENSIONS           = 9,
    STD_VIDEO_H265_PROFILE_IDC_INVALID                  = 0x7FFFFFFF
} StdVideoH265ProfileIdc;

typedef enum StdVideoH265Level {
    STD_VIDEO_H265_LEVEL_1_0 = 0,
    STD_VIDEO_H265_LEVEL_2_0 = 1,
    STD_VIDEO_H265_LEVEL_2_1 = 2,
    STD_VIDEO_H265_LEVEL_3_0 = 3,
    STD_VIDEO_H265_LEVEL_3_1 = 4,
    STD_VIDEO_H265_LEVEL_4_0 = 5,
    STD_VIDEO_H265_LEVEL_4_1 = 6,
    STD_VIDEO_H265_LEVEL_5_0 = 7,
    STD_VIDEO_H265_LEVEL_5_1 = 8,
    STD_VIDEO_H265_LEVEL_5_2 = 9,
    STD_VIDEO_H265_LEVEL_6_0 = 10,
    STD_VIDEO_H265_LEVEL_6_1 = 11,
    STD_VIDEO_H265_LEVEL_6_2 = 12,
    STD_VIDEO_H265_LEVEL_INVALID = 0x7FFFFFFF
} StdVideoH265Level;

typedef enum StdVideoH265SliceType {
    STD_VIDEO_H265_SLICE_TYPE_B = 0,
    STD_VIDEO_H265_SLICE_TYPE_P = 1,
    STD_VIDEO_H265_SLICE_TYPE_I = 2,
    STD_VIDEO_H265_SLICE_TYPE_INVALID = 0x7FFFFFFF
} StdVideoH265SliceType;

typedef enum StdVideoH265PictureType {
    STD_VIDEO_H265_PICTURE_TYPE_P   = 0,
    STD_VIDEO_H265_PICTURE_TYPE_B   = 1,
    STD_VIDEO_H265_PICTURE_TYPE_I   = 2,
    STD_VIDEO_H265_PICTURE_TYPE_IDR = 3,
    STD_VIDEO_H265_PICTURE_TYPE_INVALID = 0x7FFFFFFF
} StdVideoH265PictureType;

typedef struct StdVideoH265DecPicBufMgr
{
    uint32_t max_latency_increase_plus1[STD_VIDEO_H265_SUBLAYERS_MINUS1_LIST_SIZE];
    uint8_t  max_dec_pic_buffering_minus1[STD_VIDEO_H265_SUBLAYERS_MINUS1_LIST_SIZE];
    uint8_t  max_num_reorder_pics[STD_VIDEO_H265_SUBLAYERS_MINUS1_LIST_SIZE];
} StdVideoH265DecPicBufMgr;

typedef struct StdVideoH265SubLayerHrdParameters { // sub_layer_hrd_parameters
    uint32_t bit_rate_value_minus1[STD_VIDEO_H265_CPB_CNT_LIST_SIZE];
    uint32_t cpb_size_value_minus1[STD_VIDEO_H265_CPB_CNT_LIST_SIZE];
    uint32_t cpb_size_du_value_minus1[STD_VIDEO_H265_CPB_CNT_LIST_SIZE];
    uint32_t bit_rate_du_value_minus1[STD_VIDEO_H265_CPB_CNT_LIST_SIZE];
    uint32_t cbr_flag; // each bit represents a range of CpbCounts (bit 0 - cpb_cnt_minus1) per sub-layer
} StdVideoH265SubLayerHrdParameters;

typedef struct StdVideoH265HrdFlags {
    uint32_t nal_hrd_parameters_present_flag : 1;
    uint32_t vcl_hrd_parameters_present_flag : 1;
    uint32_t sub_pic_hrd_params_present_flag : 1;
    uint32_t sub_pic_cpb_params_in_pic_timing_sei_flag : 1;
    uint32_t fixed_pic_rate_general_flag : 8;    // each bit represents a sublayer, bit 0 - vps_max_sub_layers_minus1
    uint32_t fixed_pic_rate_within_cvs_flag : 8; // each bit represents a sublayer, bit 0 - vps_max_sub_layers_minus1
    uint32_t low_delay_hrd_flag : 8;             // each bit represents a sublayer, bit 0 - vps_max_sub_layers_minus1
} StdVideoH265HrdFlags;

typedef struct StdVideoH265HrdParameters {
    uint8_t                            tick_divisor_minus2;
    uint8_t                            du_cpb_removal_delay_increment_length_minus1;
    uint8_t                            dpb_output_delay_du_length_minus1;
    uint8_t                            bit_rate_scale;
    uint8_t                            cpb_size_scale;
    uint8_t                            cpb_size_du_scale;
    uint8_t                            initial_cpb_removal_delay_length_minus1;
    uint8_t                            au_cpb_removal_delay_length_minus1;
    uint8_t                            dpb_output_delay_length_minus1;
    uint8_t                            cpb_cnt_minus1[STD_VIDEO_H265_SUBLAYERS_MINUS1_LIST_SIZE];
    uint16_t                           elemental_duration_in_tc_minus1[STD_VIDEO_H265_SUBLAYERS_MINUS1_LIST_SIZE];
    StdVideoH265SubLayerHrdParameters* pSubLayerHrdParametersNal[STD_VIDEO_H265_SUBLAYERS_MINUS1_LIST_SIZE]; // NAL per layer ptr to sub_layer_hrd_parameters
    StdVideoH265SubLayerHrdParameters* pSubLayerHrdParametersVcl[STD_VIDEO_H265_SUBLAYERS_MINUS1_LIST_SIZE]; // VCL per layer ptr to sub_layer_hrd_parameters
    StdVideoH265HrdFlags               flags;
} StdVideoH265HrdParameters;

typedef struct StdVideoH265VpsFlags {
    uint32_t vps_temporal_id_nesting_flag : 1;
    uint32_t vps_sub_layer_ordering_info_present_flag : 1;
    uint32_t vps_timing_info_present_flag : 1;
    uint32_t vps_poc_proportional_to_timing_flag : 1;
} StdVideoH265VpsFlags;

typedef struct StdVideoH265VideoParameterSet
{
    uint8_t                      vps_video_parameter_set_id;
    uint8_t                      vps_max_sub_layers_minus1;
    uint32_t                     vps_num_units_in_tick;
    uint32_t                     vps_time_scale;
    uint32_t                     vps_num_ticks_poc_diff_one_minus1;
    StdVideoH265DecPicBufMgr*    pDecPicBufMgr;
    StdVideoH265HrdParameters*   pHrdParameters;
    StdVideoH265VpsFlags         flags;
} StdVideoH265VideoParameterSet;

typedef struct StdVideoH265ScalingLists
{
    uint8_t ScalingList4x4[STD_VIDEO_H265_SCALING_LIST_4X4_NUM_LISTS][STD_VIDEO_H265_SCALING_LIST_4X4_NUM_ELEMENTS];       // ScalingList[ 0 ][ MatrixID ][ i ] (sizeID = 0)
    uint8_t ScalingList8x8[STD_VIDEO_H265_SCALING_LIST_8X8_NUM_LISTS][STD_VIDEO_H265_SCALING_LIST_8X8_NUM_ELEMENTS];       // ScalingList[ 1 ][ MatrixID ][ i ] (sizeID = 1)
    uint8_t ScalingList16x16[STD_VIDEO_H265_SCALING_LIST_16X16_NUM_LISTS][STD_VIDEO_H265_SCALING_LIST_16X16_NUM_ELEMENTS];     // ScalingList[ 2 ][ MatrixID ][ i ] (sizeID = 2)
    uint8_t ScalingList32x32[STD_VIDEO_H265_SCALING_LIST_32X32_NUM_LISTS][STD_VIDEO_H265_SCALING_LIST_32X32_NUM_ELEMENTS];     // ScalingList[ 3 ][ MatrixID ][ i ] (sizeID = 3)
    uint8_t ScalingListDCCoef16x16[STD_VIDEO_H265_SCALING_LIST_16X16_NUM_LISTS];   // scaling_list_dc_coef_minus8[ sizeID - 2 ][ matrixID ] + 8, sizeID = 2
    uint8_t ScalingListDCCoef32x32[STD_VIDEO_H265_SCALING_LIST_32X32_NUM_LISTS];   // scaling_list_dc_coef_minus8[ sizeID - 2 ][ matrixID ] + 8. sizeID = 3
} StdVideoH265ScalingLists;

typedef struct StdVideoH265SpsVuiFlags {
    uint32_t aspect_ratio_info_present_flag : 1;
    uint32_t overscan_info_present_flag : 1;
    uint32_t overscan_appropriate_flag : 1;
    uint32_t video_signal_type_present_flag : 1;
    uint32_t video_full_range_flag : 1;
    uint32_t colour_description_present_flag : 1;
    uint32_t chroma_loc_info_present_flag : 1;
    uint32_t neutral_chroma_indication_flag : 1;
    uint32_t field_seq_flag : 1;
    uint32_t frame_field_info_present_flag : 1;
    uint32_t default_display_window_flag : 1;
    uint32_t vui_timing_info_present_flag : 1;
    uint32_t vui_poc_proportional_to_timing_flag : 1;
    uint32_t vui_hrd_parameters_present_flag : 1;
    uint32_t bitstream_restriction_flag : 1;
    uint32_t tiles_fixed_structure_flag : 1;
    uint32_t motion_vectors_over_pic_boundaries_flag : 1;
    uint32_t restricted_ref_pic_lists_flag : 1;
} StdVideoH265SpsVuiFlags;

typedef struct StdVideoH265SequenceParameterSetVui {
    uint8_t                     aspect_ratio_idc;
    uint16_t                    sar_width;
    uint16_t                    sar_height;
    uint8_t                     video_format;
    uint8_t                     colour_primaries;
    uint8_t                     transfer_characteristics;
    uint8_t                     matrix_coeffs;
    uint8_t                     chroma_sample_loc_type_top_field;
    uint8_t                     chroma_sample_loc_type_bottom_field;
    uint16_t                    def_disp_win_left_offset;
    uint16_t                    def_disp_win_right_offset;
    uint16_t                    def_disp_win_top_offset;
    uint16_t                    def_disp_win_bottom_offset;
    uint32_t                    vui_num_units_in_tick;
    uint32_t                    vui_time_scale;
    uint32_t                    vui_num_ticks_poc_diff_one_minus1;
    StdVideoH265HrdParameters*  pHrdParameters;
    uint16_t                    min_spatial_segmentation_idc;
    uint8_t                     max_bytes_per_pic_denom;
    uint8_t                     max_bits_per_min_cu_denom;
    uint8_t                     log2_max_mv_length_horizontal;
    uint8_t                     log2_max_mv_length_vertical;
    StdVideoH265SpsVuiFlags     flags;
} StdVideoH265SequenceParameterSetVui;

typedef struct StdVideoH265PredictorPaletteEntries
{
    uint16_t PredictorPaletteEntries[STD_VIDEO_H265_PREDICTOR_PALETTE_COMPONENTS_LIST_SIZE][STD_VIDEO_H265_PREDICTOR_PALETTE_COMP_ENTRIES_LIST_SIZE];
} StdVideoH265PredictorPaletteEntries;

typedef struct StdVideoH265SpsFlags {
    uint32_t sps_temporal_id_nesting_flag : 1;
    uint32_t separate_colour_plane_flag : 1;
    uint32_t scaling_list_enabled_flag : 1;
    uint32_t sps_scaling_list_data_present_flag : 1;
    uint32_t amp_enabled_flag : 1;
    uint32_t sample_adaptive_offset_enabled_flag : 1;
    uint32_t pcm_enabled_flag : 1;
    uint32_t pcm_loop_filter_disabled_flag : 1;
    uint32_t long_term_ref_pics_present_flag : 1;
    uint32_t sps_temporal_mvp_enabled_flag : 1;
    uint32_t strong_intra_smoothing_enabled_flag : 1;
    uint32_t vui_parameters_present_flag : 1;
    uint32_t sps_extension_present_flag : 1;
    uint32_t sps_range_extension_flag : 1;

    // extension SPS flags, valid when STD_VIDEO_H265_PROFILE_IDC_FORMAT_RANGE_EXTENSIONS is set
    uint32_t transform_skip_rotation_enabled_flag : 1;
    uint32_t transform_skip_context_enabled_flag : 1;
    uint32_t implicit_rdpcm_enabled_flag : 1;
    uint32_t explicit_rdpcm_enabled_flag : 1;
    uint32_t extended_precision_processing_flag : 1;
    uint32_t intra_smoothing_disabled_flag : 1;
    uint32_t high_precision_offsets_enabled_flag : 1;
    uint32_t persistent_rice_adaptation_enabled_flag : 1;
    uint32_t cabac_bypass_alignment_enabled_flag : 1;

    // extension SPS flags, valid when STD_VIDEO_H265_PROFILE_IDC_SCC_EXTENSIONS is set
    uint32_t sps_curr_pic_ref_enabled_flag : 1;
    uint32_t palette_mode_enabled_flag : 1;
    uint32_t sps_palette_predictor_initializer_present_flag : 1;
    uint32_t intra_boundary_filtering_disabled_flag : 1;
} StdVideoH265SpsFlags;

typedef struct StdVideoH265SequenceParameterSet
{
    StdVideoH265ProfileIdc               profile_idc;
    StdVideoH265Level                    level_idc;
    uint32_t                             pic_width_in_luma_samples;
    uint32_t                             pic_height_in_luma_samples;
    uint8_t                              sps_video_parameter_set_id;
    uint8_t                              sps_max_sub_layers_minus1;
    uint8_t                              sps_seq_parameter_set_id;
    uint8_t                              chroma_format_idc;
    uint8_t                              bit_depth_luma_minus8;
    uint8_t                              bit_depth_chroma_minus8;
    uint8_t                              log2_max_pic_order_cnt_lsb_minus4;
    uint8_t                              sps_max_dec_pic_buffering_minus1;
    uint8_t                              log2_min_luma_coding_block_size_minus3;
    uint8_t                              log2_diff_max_min_luma_coding_block_size;
    uint8_t                              log2_min_luma_transform_block_size_minus2;
    uint8_t                              log2_diff_max_min_luma_transform_block_size;
    uint8_t                              max_transform_hierarchy_depth_inter;
    uint8_t                              max_transform_hierarchy_depth_intra;
    uint8_t                              num_short_term_ref_pic_sets;
    uint8_t                              num_long_term_ref_pics_sps;
    uint8_t                              pcm_sample_bit_depth_luma_minus1;
    uint8_t                              pcm_sample_bit_depth_chroma_minus1;
    uint8_t                              log2_min_pcm_luma_coding_block_size_minus3;
    uint8_t                              log2_diff_max_min_pcm_luma_coding_block_size;
    uint32_t                             conf_win_left_offset;
    uint32_t                             conf_win_right_offset;
    uint32_t                             conf_win_top_offset;
    uint32_t                             conf_win_bottom_offset;
    StdVideoH265DecPicBufMgr*            pDecPicBufMgr;
    StdVideoH265SpsFlags                 flags;
    StdVideoH265ScalingLists*            pScalingLists;             // Must be a valid pointer if sps_scaling_list_data_present_flag is set
    StdVideoH265SequenceParameterSetVui* pSequenceParameterSetVui;  // Must be a valid pointer if StdVideoH265SpsFlags:vui_parameters_present_flag is set palette_max_size;

    // extension SPS flags, valid when STD_VIDEO_H265_PROFILE_IDC_SCC_EXTENSIONS is set
    uint8_t                              palette_max_size;
    uint8_t                              delta_palette_max_predictor_size;
    uint8_t                              motion_vector_resolution_control_idc;
    uint8_t                              sps_num_palette_predictor_initializer_minus1;
    StdVideoH265PredictorPaletteEntries* pPredictorPaletteEntries;  // Must be a valid pointer if sps_palette_predictor_initializer_present_flag is set
} StdVideoH265SequenceParameterSet;


typedef struct StdVideoH265PpsFlags {
    uint32_t dependent_slice_segments_enabled_flag : 1;
    uint32_t output_flag_present_flag : 1;
    uint32_t sign_data_hiding_enabled_flag : 1;
    uint32_t cabac_init_present_flag : 1;
    uint32_t constrained_intra_pred_flag : 1;
    uint32_t transform_skip_enabled_flag : 1;
    uint32_t cu_qp_delta_enabled_flag : 1;
    uint32_t pps_slice_chroma_qp_offsets_present_flag : 1;
    uint32_t weighted_pred_flag : 1;
    uint32_t weighted_bipred_flag : 1;
    uint32_t transquant_bypass_enabled_flag : 1;
    uint32_t tiles_enabled_flag : 1;
    uint32_t entropy_coding_sync_enabled_flag : 1;
    uint32_t uniform_spacing_flag : 1;
    uint32_t loop_filter_across_tiles_enabled_flag : 1;
    uint32_t pps_loop_filter_across_slices_enabled_flag : 1;
    uint32_t deblocking_filter_control_present_flag : 1;
    uint32_t deblocking_filter_override_enabled_flag : 1;
    uint32_t pps_deblocking_filter_disabled_flag : 1;
    uint32_t pps_scaling_list_data_present_flag : 1;
    uint32_t lists_modification_present_flag : 1;
    uint32_t slice_segment_header_extension_present_flag : 1;
    uint32_t pps_extension_present_flag : 1;

    // extension PPS flags, valid when STD_VIDEO_H265_PROFILE_IDC_FORMAT_RANGE_EXTENSIONS is set
    uint32_t cross_component_prediction_enabled_flag : 1;
    uint32_t chroma_qp_offset_list_enabled_flag : 1;

    // extension PPS flags, valid when STD_VIDEO_H265_PROFILE_IDC_SCC_EXTENSIONS is set
    uint32_t pps_curr_pic_ref_enabled_flag : 1;
    uint32_t residual_adaptive_colour_transform_enabled_flag : 1;
    uint32_t pps_slice_act_qp_offsets_present_flag : 1;
    uint32_t pps_palette_predictor_initializer_present_flag : 1;
    uint32_t monochrome_palette_flag : 1;
    uint32_t pps_range_extension_flag : 1;
} StdVideoH265PpsFlags;

typedef struct StdVideoH265PictureParameterSet
{
    uint8_t                              pps_pic_parameter_set_id;
    uint8_t                              pps_seq_parameter_set_id;
    uint8_t                              num_extra_slice_header_bits;
    uint8_t                              num_ref_idx_l0_default_active_minus1;
    uint8_t                              num_ref_idx_l1_default_active_minus1;
    int8_t                               init_qp_minus26;
    uint8_t                              diff_cu_qp_delta_depth;
    int8_t                               pps_cb_qp_offset;
    int8_t                               pps_cr_qp_offset;
    uint8_t                              num_tile_columns_minus1;
    uint8_t                              num_tile_rows_minus1;
    uint16_t                             column_width_minus1[STD_VIDEO_H265_CHROMA_QP_OFFSET_TILE_COLS_LIST_SIZE];
    uint16_t                             row_height_minus1[STD_VIDEO_H265_CHROMA_QP_OFFSET_TILE_ROWS_LIST_SIZE];
    int8_t                               pps_beta_offset_div2;
    int8_t                               pps_tc_offset_div2;
    uint8_t                              log2_parallel_merge_level_minus2;
    StdVideoH265PpsFlags                 flags;
    StdVideoH265ScalingLists*            pScalingLists; // Must be a valid pointer if pps_scaling_list_data_present_flag is set

    // extension PPS, valid when STD_VIDEO_H265_PROFILE_IDC_FORMAT_RANGE_EXTENSIONS is set
    uint8_t                              log2_max_transform_skip_block_size_minus2;
    uint8_t                              diff_cu_chroma_qp_offset_depth;
    uint8_t                              chroma_qp_offset_list_len_minus1;
    int8_t                               cb_qp_offset_list[STD_VIDEO_H265_CHROMA_QP_OFFSET_LIST_SIZE];
    int8_t                               cr_qp_offset_list[STD_VIDEO_H265_CHROMA_QP_OFFSET_LIST_SIZE];
    uint8_t                              log2_sao_offset_scale_luma;
    uint8_t                              log2_sao_offset_scale_chroma;

    // extension PPS, valid when STD_VIDEO_H265_PROFILE_IDC_SCC_EXTENSIONS is set
    int8_t                               pps_act_y_qp_offset_plus5;
    int8_t                               pps_act_cb_qp_offset_plus5;
    int8_t                               pps_act_cr_qp_offset_plus5;
    uint8_t                              pps_num_palette_predictor_initializer;
    uint8_t                              luma_bit_depth_entry_minus8;
    uint8_t                              chroma_bit_depth_entry_minus8;
    StdVideoH265PredictorPaletteEntries* pPredictorPaletteEntries;  // Must be a valid pointer if pps_palette_predictor_initializer_present_flag is set
} StdVideoH265PictureParameterSet;

#ifdef __cplusplus
}
#endif

#endif // VULKAN_VIDEO_CODEC_H265STD_H_