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ffmpeg/libavcodec/hevc/ps.h

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/*
* HEVC parameter set parsing
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_HEVC_PS_H
#define AVCODEC_HEVC_PS_H
#include <stdint.h>
#include "libavutil/pixfmt.h"
#include "libavutil/rational.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/get_bits.h"
#include "libavcodec/h2645_vui.h"
#include "hevc.h"
#define HEVC_VPS_MAX_LAYERS 2
typedef struct HEVCSublayerHdrParams {
uint32_t bit_rate_value_minus1[HEVC_MAX_CPB_CNT];
uint32_t cpb_size_value_minus1[HEVC_MAX_CPB_CNT];
uint32_t cpb_size_du_value_minus1[HEVC_MAX_CPB_CNT];
uint32_t bit_rate_du_value_minus1[HEVC_MAX_CPB_CNT];
uint32_t cbr_flag;
} HEVCSublayerHdrParams;
// flags in bitmask form
typedef struct HEVCHdrFlagParams {
uint8_t fixed_pic_rate_general_flag;
uint8_t fixed_pic_rate_within_cvs_flag;
uint8_t low_delay_hrd_flag;
} HEVCHdrFlagParams;
typedef struct HEVCHdrParams {
HEVCHdrFlagParams flags;
uint8_t nal_hrd_parameters_present_flag;
uint8_t vcl_hrd_parameters_present_flag;
uint8_t sub_pic_hrd_params_present_flag;
uint8_t sub_pic_cpb_params_in_pic_timing_sei_flag;
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[HEVC_MAX_SUB_LAYERS];
uint16_t elemental_duration_in_tc_minus1[HEVC_MAX_SUB_LAYERS];
HEVCSublayerHdrParams nal_params[HEVC_MAX_SUB_LAYERS];
HEVCSublayerHdrParams vcl_params[HEVC_MAX_SUB_LAYERS];
} HEVCHdrParams;
typedef struct ShortTermRPS {
int32_t delta_poc[32];
uint32_t used;
uint8_t delta_idx;
uint8_t num_negative_pics;
uint8_t num_delta_pocs;
uint8_t rps_idx_num_delta_pocs;
uint16_t abs_delta_rps;
unsigned delta_rps_sign:1;
unsigned rps_predict:1;
unsigned use_delta:1;
} ShortTermRPS;
typedef struct HEVCWindow {
unsigned int left_offset;
unsigned int right_offset;
unsigned int top_offset;
unsigned int bottom_offset;
} HEVCWindow;
typedef struct VUI {
H2645VUI common;
int neutra_chroma_indication_flag;
int field_seq_flag;
int frame_field_info_present_flag;
int default_display_window_flag;
HEVCWindow def_disp_win;
int vui_timing_info_present_flag;
uint32_t vui_num_units_in_tick;
uint32_t vui_time_scale;
int vui_poc_proportional_to_timing_flag;
int vui_num_ticks_poc_diff_one_minus1;
int vui_hrd_parameters_present_flag;
int bitstream_restriction_flag;
int tiles_fixed_structure_flag;
int motion_vectors_over_pic_boundaries_flag;
int restricted_ref_pic_lists_flag;
int min_spatial_segmentation_idc;
int max_bytes_per_pic_denom;
int max_bits_per_min_cu_denom;
int log2_max_mv_length_horizontal;
int log2_max_mv_length_vertical;
} VUI;
typedef struct PTLCommon {
uint8_t profile_space;
uint8_t tier_flag;
uint8_t profile_idc;
uint8_t profile_compatibility_flag[32];
uint8_t progressive_source_flag;
uint8_t interlaced_source_flag;
uint8_t non_packed_constraint_flag;
uint8_t frame_only_constraint_flag;
uint8_t max_12bit_constraint_flag;
uint8_t max_10bit_constraint_flag;
uint8_t max_8bit_constraint_flag;
uint8_t max_422chroma_constraint_flag;
uint8_t max_420chroma_constraint_flag;
uint8_t max_monochrome_constraint_flag;
uint8_t intra_constraint_flag;
uint8_t one_picture_only_constraint_flag;
uint8_t lower_bit_rate_constraint_flag;
uint8_t max_14bit_constraint_flag;
uint8_t inbld_flag;
uint8_t level_idc;
} PTLCommon;
typedef struct PTL {
PTLCommon general_ptl;
PTLCommon sub_layer_ptl[HEVC_MAX_SUB_LAYERS];
uint8_t sub_layer_profile_present_flag[HEVC_MAX_SUB_LAYERS];
uint8_t sub_layer_level_present_flag[HEVC_MAX_SUB_LAYERS];
} PTL;
typedef struct RepFormat {
uint16_t pic_width_in_luma_samples;
uint16_t pic_height_in_luma_samples;
uint8_t chroma_format_idc;
uint8_t separate_colour_plane_flag;
uint8_t bit_depth_luma; ///< bit_depth_vps_luma_minus8 + 8
uint8_t bit_depth_chroma; ///< bit_depth_vps_chroma_minus8 + 8
uint16_t conf_win_left_offset;
uint16_t conf_win_right_offset;
uint16_t conf_win_top_offset;
uint16_t conf_win_bottom_offset;
} RepFormat;
typedef struct HEVCVPS {
unsigned int vps_id;
uint8_t vps_temporal_id_nesting_flag;
int vps_max_layers;
int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1
PTL ptl;
int vps_sub_layer_ordering_info_present_flag;
unsigned int vps_max_dec_pic_buffering[HEVC_MAX_SUB_LAYERS];
unsigned int vps_num_reorder_pics[HEVC_MAX_SUB_LAYERS];
unsigned int vps_max_latency_increase[HEVC_MAX_SUB_LAYERS];
int vps_max_layer_id;
int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1
uint8_t vps_timing_info_present_flag;
uint32_t vps_num_units_in_tick;
uint32_t vps_time_scale;
uint8_t vps_poc_proportional_to_timing_flag;
int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1
int vps_num_hrd_parameters;
HEVCHdrParams *hdr;
/* VPS extension */
/* Number of layers this VPS was parsed for, between 1 and
* min(HEVC_VPS_MAX_LAYERS, vps_max_layers).
*
* Note that vps_max_layers contains the layer count declared in the
* bitstream, while nb_layers contains the number of layers exported to
* users of this API (which may be smaller as we only support a subset of
* multilayer extensions).
*
* Arrays below documented as [layer_idx] have nb_layers valid entries.
*/
int nb_layers;
// LayerIdxInVps[nuh_layer_id], i.e. a mapping of nuh_layer_id to VPS layer
// indices. Valid values are between 0 and HEVC_VPS_MAX_LAYERS. Entries for
// unmapped values of nuh_layer_id are set to -1.
int8_t layer_idx[HEVC_MAX_NUH_LAYER_ID + 1];
uint8_t layer_id_in_nuh[HEVC_VPS_MAX_LAYERS];
uint8_t default_ref_layers_active;
uint8_t max_one_active_ref_layer;
uint8_t poc_lsb_aligned;
// bitmask of poc_lsb_not_present[layer_idx]
uint8_t poc_lsb_not_present;
struct {
unsigned max_dec_pic_buffering; // max_vps_dec_pic_buffering_minus1 + 1
unsigned max_num_reorder_pics; // max_vps_num_reorder_pics
unsigned max_latency_increase; // max_vps_latency_increase_plus1 - 1
} dpb_size;
// ViewId[layer_idx]
uint16_t view_id[HEVC_VPS_MAX_LAYERS];
// NumOutputLayerSets
uint8_t num_output_layer_sets;
// Bitmasks specifying output layer sets. i-th bit set means layer with VPS
// index i is present in the layer set.
uint64_t ols[HEVC_VPS_MAX_LAYERS];
// NumDirectRefLayers[layer_idx]
uint8_t num_direct_ref_layers[HEVC_VPS_MAX_LAYERS];
RepFormat rep_format;
uint8_t *data;
int data_size;
} HEVCVPS;
typedef struct ScalingList {
/* This is a little wasteful, since sizeID 0 only needs 8 coeffs,
* and size ID 3 only has 2 arrays, not 6. */
uint8_t sl[4][6][64];
uint8_t sl_dc[2][6];
} ScalingList;
typedef struct HEVCSPS {
unsigned vps_id;
int chroma_format_idc;
HEVCWindow output_window;
HEVCWindow pic_conf_win;
HEVCHdrParams hdr;
int bit_depth;
int bit_depth_chroma;
int pixel_shift;
enum AVPixelFormat pix_fmt;
unsigned int log2_max_poc_lsb;
int max_sub_layers;
struct {
int max_dec_pic_buffering;
int num_reorder_pics;
int max_latency_increase;
} temporal_layer[HEVC_MAX_SUB_LAYERS];
int vui_present;
VUI vui;
PTL ptl;
ScalingList scaling_list;
unsigned int nb_st_rps;
ShortTermRPS st_rps[HEVC_MAX_SHORT_TERM_REF_PIC_SETS];
uint16_t lt_ref_pic_poc_lsb_sps[HEVC_MAX_LONG_TERM_REF_PICS];
uint32_t used_by_curr_pic_lt;
uint8_t num_long_term_ref_pics_sps;
struct {
uint8_t bit_depth;
uint8_t bit_depth_chroma;
unsigned int log2_min_pcm_cb_size;
unsigned int log2_max_pcm_cb_size;
} pcm;
unsigned int log2_min_cb_size;
unsigned int log2_diff_max_min_coding_block_size;
unsigned int log2_min_tb_size;
unsigned int log2_max_trafo_size;
unsigned int log2_ctb_size;
unsigned int log2_min_pu_size;
unsigned int log2_diff_max_min_transform_block_size;
int max_transform_hierarchy_depth_inter;
int max_transform_hierarchy_depth_intra;
uint8_t separate_colour_plane;
uint8_t conformance_window;
uint8_t pcm_enabled;
uint8_t pcm_loop_filter_disabled;
uint8_t sublayer_ordering_info;
uint8_t temporal_id_nesting;
uint8_t extension_present;
uint8_t scaling_list_enabled;
uint8_t amp_enabled;
uint8_t sao_enabled;
uint8_t long_term_ref_pics_present;
uint8_t temporal_mvp_enabled;
uint8_t strong_intra_smoothing_enabled;
uint8_t range_extension;
uint8_t transform_skip_rotation_enabled;
uint8_t transform_skip_context_enabled;
uint8_t implicit_rdpcm_enabled;
uint8_t explicit_rdpcm_enabled;
uint8_t extended_precision_processing;
uint8_t intra_smoothing_disabled;
uint8_t high_precision_offsets_enabled;
uint8_t persistent_rice_adaptation_enabled;
uint8_t cabac_bypass_alignment_enabled;
uint8_t multilayer_extension;
uint8_t sps_3d_extension;
uint8_t scc_extension;
uint8_t curr_pic_ref_enabled;
uint8_t palette_mode_enabled;
uint8_t palette_predictor_initializers_present;
uint8_t intra_boundary_filtering_disabled;
int palette_max_size;
int delta_palette_max_predictor_size;
int sps_num_palette_predictor_initializers;
int sps_palette_predictor_initializer[3][HEVC_MAX_PALETTE_PREDICTOR_SIZE];
int motion_vector_resolution_control_idc;
///< coded frame dimension in various units
int width;
int height;
int ctb_width;
int ctb_height;
int ctb_size;
int min_cb_width;
int min_cb_height;
int min_tb_width;
int min_tb_height;
int min_pu_width;
int min_pu_height;
int tb_mask;
int hshift[3];
int vshift[3];
int qp_bd_offset;
uint8_t *data;
int data_size;
const HEVCVPS *vps; ///< RefStruct reference
} HEVCSPS;
typedef struct HEVCPPS {
unsigned int pps_id;
unsigned int sps_id; ///< seq_parameter_set_id
uint8_t sign_data_hiding_flag;
uint8_t cabac_init_present_flag;
int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1
int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1
int pic_init_qp_minus26;
uint8_t constrained_intra_pred_flag;
uint8_t transform_skip_enabled_flag;
uint8_t cu_qp_delta_enabled_flag;
int diff_cu_qp_delta_depth;
int cb_qp_offset;
int cr_qp_offset;
uint8_t pic_slice_level_chroma_qp_offsets_present_flag;
uint8_t weighted_pred_flag;
uint8_t weighted_bipred_flag;
uint8_t output_flag_present_flag;
uint8_t transquant_bypass_enable_flag;
uint8_t dependent_slice_segments_enabled_flag;
uint8_t tiles_enabled_flag;
uint8_t entropy_coding_sync_enabled_flag;
uint16_t num_tile_columns; ///< num_tile_columns_minus1 + 1
uint16_t num_tile_rows; ///< num_tile_rows_minus1 + 1
uint8_t uniform_spacing_flag;
uint8_t loop_filter_across_tiles_enabled_flag;
uint8_t seq_loop_filter_across_slices_enabled_flag;
uint8_t deblocking_filter_control_present_flag;
uint8_t deblocking_filter_override_enabled_flag;
uint8_t disable_dbf;
int beta_offset; ///< beta_offset_div2 * 2
int tc_offset; ///< tc_offset_div2 * 2
uint8_t scaling_list_data_present_flag;
ScalingList scaling_list;
uint8_t lists_modification_present_flag;
int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2
int num_extra_slice_header_bits;
uint8_t slice_header_extension_present_flag;
uint8_t log2_max_transform_skip_block_size;
uint8_t pps_extension_present_flag;
uint8_t pps_range_extensions_flag;
uint8_t pps_multilayer_extension_flag;
uint8_t pps_3d_extension_flag;
uint8_t pps_scc_extension_flag;
uint8_t cross_component_prediction_enabled_flag;
uint8_t chroma_qp_offset_list_enabled_flag;
uint8_t diff_cu_chroma_qp_offset_depth;
uint8_t chroma_qp_offset_list_len_minus1;
int8_t cb_qp_offset_list[6];
int8_t cr_qp_offset_list[6];
uint8_t log2_sao_offset_scale_luma;
uint8_t log2_sao_offset_scale_chroma;
// Multilayer extension parameters
uint8_t poc_reset_info_present_flag;
uint8_t pps_infer_scaling_list_flag;
uint8_t pps_scaling_list_ref_layer_id;
uint8_t num_ref_loc_offsets;
uint8_t ref_loc_offset_layer_id[64];
uint8_t scaled_ref_layer_offset_present_flag[64];
int16_t scaled_ref_layer_left_offset[64];
int16_t scaled_ref_layer_top_offset[64];
int16_t scaled_ref_layer_right_offset[64];
int16_t scaled_ref_layer_bottom_offset[64];
uint8_t ref_region_offset_present_flag[64];
int16_t ref_region_left_offset[64];
int16_t ref_region_top_offset[64];
int16_t ref_region_right_offset[64];
int16_t ref_region_bottom_offset[64];
uint8_t resample_phase_set_present_flag[64];
uint8_t phase_hor_luma[64];
uint8_t phase_ver_luma[64];
int8_t phase_hor_chroma[64];
int8_t phase_ver_chroma[64];
uint8_t colour_mapping_enabled_flag;
uint8_t num_cm_ref_layers;
uint8_t cm_ref_layer_id[62];
uint8_t cm_octant_depth;
uint8_t cm_y_part_num_log2;
uint8_t luma_bit_depth_cm_input;
uint8_t chroma_bit_depth_cm_input;
uint8_t luma_bit_depth_cm_output;
uint8_t chroma_bit_depth_cm_output;
uint8_t cm_res_quant_bits;
uint8_t cm_delta_flc_bits;
int8_t cm_adapt_threshold_u_delta;
int8_t cm_adapt_threshold_v_delta;
// 3D extension parameters
uint8_t pps_bit_depth_for_depth_layers_minus8;
// SCC extension parameters
uint8_t pps_curr_pic_ref_enabled_flag;
uint8_t residual_adaptive_colour_transform_enabled_flag;
uint8_t pps_slice_act_qp_offsets_present_flag;
int8_t pps_act_y_qp_offset; // _plus5
int8_t pps_act_cb_qp_offset; // _plus5
int8_t pps_act_cr_qp_offset; // _plus3
uint8_t pps_palette_predictor_initializers_present_flag;
uint8_t pps_num_palette_predictor_initializers;
uint8_t monochrome_palette_flag;
uint8_t luma_bit_depth_entry;
uint8_t chroma_bit_depth_entry;
uint16_t pps_palette_predictor_initializer[3][HEVC_MAX_PALETTE_PREDICTOR_SIZE];
// Inferred parameters
unsigned int *column_width; ///< ColumnWidth
unsigned int *row_height; ///< RowHeight
unsigned int *col_bd; ///< ColBd
unsigned int *row_bd; ///< RowBd
int *col_idxX;
int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS
int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS
int *tile_id; ///< TileId
int *tile_pos_rs; ///< TilePosRS
int *min_tb_addr_zs; ///< MinTbAddrZS
int *min_tb_addr_zs_tab;///< MinTbAddrZS
uint8_t *data;
int data_size;
const HEVCSPS *sps; ///< RefStruct reference
} HEVCPPS;
typedef struct HEVCParamSets {
const HEVCVPS *vps_list[HEVC_MAX_VPS_COUNT]; ///< RefStruct references
const HEVCSPS *sps_list[HEVC_MAX_SPS_COUNT]; ///< RefStruct references
const HEVCPPS *pps_list[HEVC_MAX_PPS_COUNT]; ///< RefStruct references
} HEVCParamSets;
/**
* Parse the SPS from the bitstream into the provided HEVCSPS struct.
*
* @param sps_id the SPS id will be written here
* @param apply_defdispwin if set 1, the default display window from the VUI
* will be applied to the video dimensions
* @param vps_list if non-NULL, this function will validate that the SPS refers
* to an existing VPS
*/
int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
unsigned nuh_layer_id, int apply_defdispwin,
const HEVCVPS * const *vps_list, AVCodecContext *avctx);
int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx,
HEVCParamSets *ps);
int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx,
HEVCParamSets *ps, unsigned nuh_layer_id,
int apply_defdispwin);
int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
HEVCParamSets *ps);
void ff_hevc_ps_uninit(HEVCParamSets *ps);
int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,
ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header);
int ff_hevc_encode_nal_vps(HEVCVPS *vps, unsigned int id,
uint8_t *buf, int buf_size);
/**
* Compute POC of the current frame and return it.
*/
int ff_hevc_compute_poc(const HEVCSPS *sps, int pocTid0, int poc_lsb, int nal_unit_type);
#endif /* AVCODEC_HEVC_PS_H */
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