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8c8072c29c
"Currently active PPS" is a property of the decoding process, not of the list of available parameter sets.
490 lines
15 KiB
C
490 lines
15 KiB
C
/*
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* HEVC parameter set parsing
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_HEVC_PS_H
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#define AVCODEC_HEVC_PS_H
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#include <stdint.h>
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#include "libavutil/pixfmt.h"
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#include "libavutil/rational.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/get_bits.h"
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#include "libavcodec/h2645_vui.h"
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#include "hevc.h"
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typedef struct HEVCSublayerHdrParams {
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uint32_t bit_rate_value_minus1[HEVC_MAX_CPB_CNT];
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uint32_t cpb_size_value_minus1[HEVC_MAX_CPB_CNT];
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uint32_t cpb_size_du_value_minus1[HEVC_MAX_CPB_CNT];
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uint32_t bit_rate_du_value_minus1[HEVC_MAX_CPB_CNT];
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uint32_t cbr_flag;
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} HEVCSublayerHdrParams;
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// flags in bitmask form
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typedef struct HEVCHdrFlagParams {
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uint8_t fixed_pic_rate_general_flag;
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uint8_t fixed_pic_rate_within_cvs_flag;
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uint8_t low_delay_hrd_flag;
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} HEVCHdrFlagParams;
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typedef struct HEVCHdrParams {
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HEVCHdrFlagParams flags;
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uint8_t nal_hrd_parameters_present_flag;
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uint8_t vcl_hrd_parameters_present_flag;
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uint8_t sub_pic_hrd_params_present_flag;
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uint8_t sub_pic_cpb_params_in_pic_timing_sei_flag;
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uint8_t tick_divisor_minus2;
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uint8_t du_cpb_removal_delay_increment_length_minus1;
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uint8_t dpb_output_delay_du_length_minus1;
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uint8_t bit_rate_scale;
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uint8_t cpb_size_scale;
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uint8_t cpb_size_du_scale;
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uint8_t initial_cpb_removal_delay_length_minus1;
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uint8_t au_cpb_removal_delay_length_minus1;
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uint8_t dpb_output_delay_length_minus1;
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uint8_t cpb_cnt_minus1[HEVC_MAX_SUB_LAYERS];
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uint16_t elemental_duration_in_tc_minus1[HEVC_MAX_SUB_LAYERS];
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HEVCSublayerHdrParams nal_params[HEVC_MAX_SUB_LAYERS];
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HEVCSublayerHdrParams vcl_params[HEVC_MAX_SUB_LAYERS];
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} HEVCHdrParams;
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typedef struct ShortTermRPS {
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int32_t delta_poc[32];
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uint32_t used;
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uint8_t delta_idx;
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uint8_t num_negative_pics;
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uint8_t num_delta_pocs;
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uint8_t rps_idx_num_delta_pocs;
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uint16_t abs_delta_rps;
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unsigned delta_rps_sign:1;
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unsigned rps_predict:1;
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unsigned use_delta:1;
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} ShortTermRPS;
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typedef struct HEVCWindow {
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unsigned int left_offset;
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unsigned int right_offset;
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unsigned int top_offset;
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unsigned int bottom_offset;
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} HEVCWindow;
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typedef struct VUI {
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H2645VUI common;
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int neutra_chroma_indication_flag;
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int field_seq_flag;
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int frame_field_info_present_flag;
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int default_display_window_flag;
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HEVCWindow def_disp_win;
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int vui_timing_info_present_flag;
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uint32_t vui_num_units_in_tick;
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uint32_t vui_time_scale;
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int vui_poc_proportional_to_timing_flag;
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int vui_num_ticks_poc_diff_one_minus1;
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int vui_hrd_parameters_present_flag;
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int bitstream_restriction_flag;
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int tiles_fixed_structure_flag;
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int motion_vectors_over_pic_boundaries_flag;
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int restricted_ref_pic_lists_flag;
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int min_spatial_segmentation_idc;
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int max_bytes_per_pic_denom;
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int max_bits_per_min_cu_denom;
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int log2_max_mv_length_horizontal;
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int log2_max_mv_length_vertical;
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} VUI;
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typedef struct PTLCommon {
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uint8_t profile_space;
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uint8_t tier_flag;
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uint8_t profile_idc;
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uint8_t profile_compatibility_flag[32];
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uint8_t progressive_source_flag;
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uint8_t interlaced_source_flag;
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uint8_t non_packed_constraint_flag;
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uint8_t frame_only_constraint_flag;
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uint8_t max_12bit_constraint_flag;
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uint8_t max_10bit_constraint_flag;
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uint8_t max_8bit_constraint_flag;
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uint8_t max_422chroma_constraint_flag;
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uint8_t max_420chroma_constraint_flag;
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uint8_t max_monochrome_constraint_flag;
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uint8_t intra_constraint_flag;
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uint8_t one_picture_only_constraint_flag;
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uint8_t lower_bit_rate_constraint_flag;
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uint8_t max_14bit_constraint_flag;
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uint8_t inbld_flag;
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uint8_t level_idc;
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} PTLCommon;
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typedef struct PTL {
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PTLCommon general_ptl;
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PTLCommon sub_layer_ptl[HEVC_MAX_SUB_LAYERS];
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uint8_t sub_layer_profile_present_flag[HEVC_MAX_SUB_LAYERS];
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uint8_t sub_layer_level_present_flag[HEVC_MAX_SUB_LAYERS];
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} PTL;
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typedef struct HEVCVPS {
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unsigned int vps_id;
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uint8_t vps_temporal_id_nesting_flag;
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int vps_max_layers;
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int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1
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PTL ptl;
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int vps_sub_layer_ordering_info_present_flag;
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unsigned int vps_max_dec_pic_buffering[HEVC_MAX_SUB_LAYERS];
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unsigned int vps_num_reorder_pics[HEVC_MAX_SUB_LAYERS];
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unsigned int vps_max_latency_increase[HEVC_MAX_SUB_LAYERS];
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int vps_max_layer_id;
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int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1
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uint8_t vps_timing_info_present_flag;
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uint32_t vps_num_units_in_tick;
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uint32_t vps_time_scale;
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uint8_t vps_poc_proportional_to_timing_flag;
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int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1
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int vps_num_hrd_parameters;
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HEVCHdrParams *hdr;
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uint8_t *data;
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int data_size;
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} HEVCVPS;
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typedef struct ScalingList {
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/* This is a little wasteful, since sizeID 0 only needs 8 coeffs,
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* and size ID 3 only has 2 arrays, not 6. */
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uint8_t sl[4][6][64];
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uint8_t sl_dc[2][6];
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} ScalingList;
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typedef struct HEVCSPS {
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unsigned vps_id;
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int chroma_format_idc;
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HEVCWindow output_window;
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HEVCWindow pic_conf_win;
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HEVCHdrParams hdr;
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int bit_depth;
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int bit_depth_chroma;
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int pixel_shift;
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enum AVPixelFormat pix_fmt;
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unsigned int log2_max_poc_lsb;
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int max_sub_layers;
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struct {
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int max_dec_pic_buffering;
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int num_reorder_pics;
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int max_latency_increase;
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} temporal_layer[HEVC_MAX_SUB_LAYERS];
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int vui_present;
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VUI vui;
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PTL ptl;
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ScalingList scaling_list;
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unsigned int nb_st_rps;
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ShortTermRPS st_rps[HEVC_MAX_SHORT_TERM_REF_PIC_SETS];
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uint16_t lt_ref_pic_poc_lsb_sps[HEVC_MAX_LONG_TERM_REF_PICS];
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uint32_t used_by_curr_pic_lt;
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uint8_t num_long_term_ref_pics_sps;
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struct {
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uint8_t bit_depth;
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uint8_t bit_depth_chroma;
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unsigned int log2_min_pcm_cb_size;
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unsigned int log2_max_pcm_cb_size;
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} pcm;
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unsigned int log2_min_cb_size;
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unsigned int log2_diff_max_min_coding_block_size;
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unsigned int log2_min_tb_size;
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unsigned int log2_max_trafo_size;
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unsigned int log2_ctb_size;
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unsigned int log2_min_pu_size;
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unsigned int log2_diff_max_min_transform_block_size;
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int max_transform_hierarchy_depth_inter;
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int max_transform_hierarchy_depth_intra;
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uint8_t separate_colour_plane;
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uint8_t conformance_window;
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uint8_t pcm_enabled;
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uint8_t pcm_loop_filter_disabled;
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uint8_t sublayer_ordering_info;
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uint8_t temporal_id_nesting;
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uint8_t extension_present;
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uint8_t scaling_list_enabled;
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uint8_t amp_enabled;
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uint8_t sao_enabled;
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uint8_t long_term_ref_pics_present;
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uint8_t temporal_mvp_enabled;
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uint8_t strong_intra_smoothing_enabled;
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uint8_t range_extension;
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uint8_t transform_skip_rotation_enabled;
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uint8_t transform_skip_context_enabled;
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uint8_t implicit_rdpcm_enabled;
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uint8_t explicit_rdpcm_enabled;
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uint8_t extended_precision_processing;
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uint8_t intra_smoothing_disabled;
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uint8_t high_precision_offsets_enabled;
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uint8_t persistent_rice_adaptation_enabled;
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uint8_t cabac_bypass_alignment_enabled;
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uint8_t multilayer_extension;
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uint8_t sps_3d_extension;
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uint8_t scc_extension;
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uint8_t curr_pic_ref_enabled;
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uint8_t palette_mode_enabled;
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uint8_t palette_predictor_initializers_present;
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uint8_t intra_boundary_filtering_disabled;
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int palette_max_size;
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int delta_palette_max_predictor_size;
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int sps_num_palette_predictor_initializers;
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int sps_palette_predictor_initializer[3][HEVC_MAX_PALETTE_PREDICTOR_SIZE];
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int motion_vector_resolution_control_idc;
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///< coded frame dimension in various units
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int width;
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int height;
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int ctb_width;
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int ctb_height;
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int ctb_size;
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int min_cb_width;
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int min_cb_height;
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int min_tb_width;
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int min_tb_height;
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int min_pu_width;
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int min_pu_height;
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int tb_mask;
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int hshift[3];
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int vshift[3];
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int qp_bd_offset;
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uint8_t *data;
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int data_size;
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const HEVCVPS *vps; ///< RefStruct reference
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} HEVCSPS;
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typedef struct HEVCPPS {
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unsigned int pps_id;
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unsigned int sps_id; ///< seq_parameter_set_id
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uint8_t sign_data_hiding_flag;
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uint8_t cabac_init_present_flag;
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int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1
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int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1
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int pic_init_qp_minus26;
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uint8_t constrained_intra_pred_flag;
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uint8_t transform_skip_enabled_flag;
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uint8_t cu_qp_delta_enabled_flag;
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int diff_cu_qp_delta_depth;
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int cb_qp_offset;
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int cr_qp_offset;
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uint8_t pic_slice_level_chroma_qp_offsets_present_flag;
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uint8_t weighted_pred_flag;
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uint8_t weighted_bipred_flag;
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uint8_t output_flag_present_flag;
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uint8_t transquant_bypass_enable_flag;
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uint8_t dependent_slice_segments_enabled_flag;
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uint8_t tiles_enabled_flag;
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uint8_t entropy_coding_sync_enabled_flag;
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uint16_t num_tile_columns; ///< num_tile_columns_minus1 + 1
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uint16_t num_tile_rows; ///< num_tile_rows_minus1 + 1
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uint8_t uniform_spacing_flag;
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uint8_t loop_filter_across_tiles_enabled_flag;
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uint8_t seq_loop_filter_across_slices_enabled_flag;
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uint8_t deblocking_filter_control_present_flag;
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uint8_t deblocking_filter_override_enabled_flag;
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uint8_t disable_dbf;
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int beta_offset; ///< beta_offset_div2 * 2
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int tc_offset; ///< tc_offset_div2 * 2
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uint8_t scaling_list_data_present_flag;
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ScalingList scaling_list;
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uint8_t lists_modification_present_flag;
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int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2
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int num_extra_slice_header_bits;
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uint8_t slice_header_extension_present_flag;
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uint8_t log2_max_transform_skip_block_size;
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uint8_t pps_extension_present_flag;
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uint8_t pps_range_extensions_flag;
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uint8_t pps_multilayer_extension_flag;
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uint8_t pps_3d_extension_flag;
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uint8_t pps_scc_extension_flag;
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uint8_t cross_component_prediction_enabled_flag;
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uint8_t chroma_qp_offset_list_enabled_flag;
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uint8_t diff_cu_chroma_qp_offset_depth;
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uint8_t chroma_qp_offset_list_len_minus1;
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int8_t cb_qp_offset_list[6];
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int8_t cr_qp_offset_list[6];
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uint8_t log2_sao_offset_scale_luma;
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uint8_t log2_sao_offset_scale_chroma;
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// Multilayer extension parameters
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uint8_t poc_reset_info_present_flag;
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uint8_t pps_infer_scaling_list_flag;
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uint8_t pps_scaling_list_ref_layer_id;
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uint8_t num_ref_loc_offsets;
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uint8_t ref_loc_offset_layer_id[64];
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uint8_t scaled_ref_layer_offset_present_flag[64];
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int16_t scaled_ref_layer_left_offset[64];
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int16_t scaled_ref_layer_top_offset[64];
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int16_t scaled_ref_layer_right_offset[64];
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int16_t scaled_ref_layer_bottom_offset[64];
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uint8_t ref_region_offset_present_flag[64];
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int16_t ref_region_left_offset[64];
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int16_t ref_region_top_offset[64];
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int16_t ref_region_right_offset[64];
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int16_t ref_region_bottom_offset[64];
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uint8_t resample_phase_set_present_flag[64];
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uint8_t phase_hor_luma[64];
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uint8_t phase_ver_luma[64];
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int8_t phase_hor_chroma[64];
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int8_t phase_ver_chroma[64];
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uint8_t colour_mapping_enabled_flag;
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uint8_t num_cm_ref_layers;
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uint8_t cm_ref_layer_id[62];
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uint8_t cm_octant_depth;
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uint8_t cm_y_part_num_log2;
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uint8_t luma_bit_depth_cm_input;
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uint8_t chroma_bit_depth_cm_input;
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uint8_t luma_bit_depth_cm_output;
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uint8_t chroma_bit_depth_cm_output;
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uint8_t cm_res_quant_bits;
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uint8_t cm_delta_flc_bits;
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int8_t cm_adapt_threshold_u_delta;
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int8_t cm_adapt_threshold_v_delta;
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// 3D extension parameters
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uint8_t pps_bit_depth_for_depth_layers_minus8;
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// SCC extension parameters
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uint8_t pps_curr_pic_ref_enabled_flag;
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uint8_t residual_adaptive_colour_transform_enabled_flag;
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uint8_t pps_slice_act_qp_offsets_present_flag;
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int8_t pps_act_y_qp_offset; // _plus5
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int8_t pps_act_cb_qp_offset; // _plus5
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int8_t pps_act_cr_qp_offset; // _plus3
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uint8_t pps_palette_predictor_initializers_present_flag;
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uint8_t pps_num_palette_predictor_initializers;
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uint8_t monochrome_palette_flag;
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uint8_t luma_bit_depth_entry;
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uint8_t chroma_bit_depth_entry;
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uint16_t pps_palette_predictor_initializer[3][HEVC_MAX_PALETTE_PREDICTOR_SIZE];
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// Inferred parameters
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unsigned int *column_width; ///< ColumnWidth
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unsigned int *row_height; ///< RowHeight
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unsigned int *col_bd; ///< ColBd
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unsigned int *row_bd; ///< RowBd
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int *col_idxX;
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int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS
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int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS
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int *tile_id; ///< TileId
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int *tile_pos_rs; ///< TilePosRS
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int *min_tb_addr_zs; ///< MinTbAddrZS
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int *min_tb_addr_zs_tab;///< MinTbAddrZS
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uint8_t *data;
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int data_size;
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const HEVCSPS *sps; ///< RefStruct reference
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} HEVCPPS;
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typedef struct HEVCParamSets {
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const HEVCVPS *vps_list[HEVC_MAX_VPS_COUNT]; ///< RefStruct references
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const HEVCSPS *sps_list[HEVC_MAX_SPS_COUNT]; ///< RefStruct references
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const HEVCPPS *pps_list[HEVC_MAX_PPS_COUNT]; ///< RefStruct references
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/* currently active parameter sets */
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const HEVCVPS *vps;
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const HEVCSPS *sps;
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} HEVCParamSets;
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/**
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* Parse the SPS from the bitstream into the provided HEVCSPS struct.
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*
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* @param sps_id the SPS id will be written here
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* @param apply_defdispwin if set 1, the default display window from the VUI
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* will be applied to the video dimensions
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* @param vps_list if non-NULL, this function will validate that the SPS refers
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* to an existing VPS
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*/
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int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
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int apply_defdispwin, const HEVCVPS * const *vps_list,
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AVCodecContext *avctx);
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int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx,
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HEVCParamSets *ps);
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int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx,
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HEVCParamSets *ps, int apply_defdispwin);
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int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
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HEVCParamSets *ps);
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void ff_hevc_ps_uninit(HEVCParamSets *ps);
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int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,
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ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header);
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int ff_hevc_encode_nal_vps(HEVCVPS *vps, unsigned int id,
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uint8_t *buf, int buf_size);
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/**
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* Compute POC of the current frame and return it.
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*/
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int ff_hevc_compute_poc(const HEVCSPS *sps, int pocTid0, int poc_lsb, int nal_unit_type);
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#endif /* AVCODEC_HEVC_PS_H */
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