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/*
* VVC video decoder
*
* Copyright (C) 2021 Nuo Mi
* Copyright (C) 2022 Xu Mu
*
* 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_VVC_DEC_H
#define AVCODEC_VVC_DEC_H
#include "libavcodec/videodsp.h"
#include "libavcodec/vvc.h"
#include "ps.h"
#include "dsp.h"
#define LUMA 0
#define CHROMA 1
#define CB 1
#define CR 2
#define JCBCR 3
#define MIN_TU_LOG2 2 ///< MinTbLog2SizeY
#define MIN_PU_LOG2 2
#define L0 0
#define L1 1
typedef struct VVCRefPic {
struct VVCFrame *ref;
int poc;
int is_lt; // is long term reference
// for RPR
int is_scaled; ///< RprConstraintsActiveFlag
int scale[2]; ///< RefPicScale[]
} VVCRefPic;
typedef struct RefPicList {
VVCRefPic refs[VVC_MAX_REF_ENTRIES];
int nb_refs;
} RefPicList;
typedef struct RefPicListTab {
RefPicList refPicList[2];
} RefPicListTab;
typedef struct VVCWindow {
int16_t left_offset;
int16_t right_offset;
int16_t top_offset;
int16_t bottom_offset;
} VVCWindow;
typedef struct VVCFrame {
struct AVFrame *frame;
const VVCSPS *sps; ///< RefStruct reference
const VVCPPS *pps; ///< RefStruct reference
struct MvField *tab_dmvr_mvf; ///< RefStruct reference
RefPicListTab **rpl_tab; ///< RefStruct reference
RefPicListTab *rpl; ///< RefStruct reference
int nb_rpl_elems;
int ctb_count;
int poc;
//for RPR
VVCWindow scaling_win; ///< pps_scaling_win_left_offset * SubWithC, pps_scaling_win_right_offset * SubWithC,
///< pps_scaling_win_top_offset * SubHeigtC, pps_scaling_win_bottom_offset * SubHiehgtC
int ref_width; ///< CurrPicScalWinWidthL
int ref_height; ///< CurrPicScalWinHeightL
struct VVCFrame *collocated_ref;
struct FrameProgress *progress; ///< RefStruct reference
/**
* A sequence counter, so that old frames are output first
* after a POC reset
*/
uint16_t sequence;
/**
* A combination of VVC_FRAME_FLAG_*
*/
uint8_t flags;
} VVCFrame;
typedef struct SliceContext {
int slice_idx;
VVCSH sh;
struct EntryPoint *eps;
int nb_eps;
RefPicList *rpl;
void *ref; ///< RefStruct reference, backing slice data
} SliceContext;
typedef struct VVCFrameContext {
void *log_ctx;
// +1 for the current frame
VVCFrame DPB[VVC_MAX_DPB_SIZE + 1];
struct AVFrame *frame;
struct AVFrame *output_frame;
VVCFrameParamSets ps;
SliceContext **slices;
int nb_slices;
int nb_slices_allocated;
VVCFrame *ref;
VVCDSPContext vvcdsp;
VideoDSPContext vdsp;
struct VVCFrameThread *ft;
uint64_t decode_order;
struct FFRefStructPool *tab_dmvr_mvf_pool;
struct FFRefStructPool *rpl_tab_pool;
struct FFRefStructPool *cu_pool;
struct FFRefStructPool *tu_pool;
struct {
int16_t *slice_idx;
DBParams *deblock;
struct SAOParams *sao;
struct ALFParams *alf;
int *cb_pos_x[2]; ///< CbPosX[][][]
int *cb_pos_y[2]; ///< CbPosY[][][]
uint8_t *cb_width[2]; ///< CbWidth[][][]
uint8_t *cb_height[2]; ///< CbHeight[][][]
uint8_t *cqt_depth[2]; ///< CqtDepth[][][]
int8_t *qp[VVC_MAX_SAMPLE_ARRAYS];
uint8_t *skip; ///< CuSkipFlag[][]
uint8_t *ispmf; ///< intra_sub_partitions_mode_flag
uint8_t *msm[2]; ///< MttSplitMode[][][] in 32 pixels
uint8_t *imf; ///< IntraMipFlag[][]
uint8_t *imtf; ///< intra_mip_transposed_flag[][]
uint8_t *imm; ///< intra_mip_mode[][]
uint8_t *ipm; ///< IntraPredModeY[][]
uint8_t *cpm[2]; ///< CuPredMode[][][]
uint8_t *msf; ///< MergeSubblockFlag[][]
uint8_t *iaf; ///< InterAffineFlag[][]
uint8_t *mmi; ///< MotionModelIdc[][]
struct Mv *cp_mv[2]; ///< CpMvLX[][][][MAX_CONTROL_POINTS];
struct MvField *mvf; ///< MvDmvrL0, MvDmvrL1
uint8_t *tu_coded_flag[VVC_MAX_SAMPLE_ARRAYS]; ///< tu_y_coded_flag[][], tu_cb_coded_flag[][], tu_cr_coded_flag[][]
uint8_t *tu_joint_cbcr_residual_flag; ///< tu_joint_cbcr_residual_flag[][]
uint8_t *tb_width[2];
uint8_t *tb_height[2];
uint8_t *pcmf[2];
uint8_t *bs[2][VVC_MAX_SAMPLE_ARRAYS]; ///< horizontal, vertical boundary filtering strength
uint8_t *max_len_p[2]; ///< horizontal, vertical maxFilterLengthPs for luma
uint8_t *max_len_q[2]; ///< horizontal, vertical maxFilterLengthQs for luma
uint8_t *sao_pixel_buffer_h[VVC_MAX_SAMPLE_ARRAYS];
uint8_t *sao_pixel_buffer_v[VVC_MAX_SAMPLE_ARRAYS];
uint8_t *alf_pixel_buffer_h[VVC_MAX_SAMPLE_ARRAYS][2];
uint8_t *alf_pixel_buffer_v[VVC_MAX_SAMPLE_ARRAYS][2];
int *coeffs;
struct CTU *ctus;
struct CodingUnit **cus;
uint8_t *ibc_vir_buf[VVC_MAX_SAMPLE_ARRAYS]; ///< IbcVirBuf[]
//used in arrays_init only
struct {
int ctu_count;
int ctu_size;
int pic_size_in_min_cb;
int pic_size_in_min_pu;
int pic_size_in_min_tu;
int ctu_width;
int ctu_height;
int width;
int height;
int chroma_format_idc;
int pixel_shift;
int ibc_buffer_width; ///< IbcBufWidth
} sz;
} tab;
} VVCFrameContext;
typedef struct VVCContext {
struct AVCodecContext *avctx;
CodedBitstreamContext *cbc;
CodedBitstreamFragment current_frame;
VVCParamSets ps;
int temporal_id; ///< temporal_id_plus1 - 1
int poc_tid0;
int eos; ///< current packet contains an EOS/EOB NAL
int last_eos; ///< last packet contains an EOS/EOB NAL
enum VVCNALUnitType vcl_unit_type;
int no_output_before_recovery_flag; ///< NoOutputBeforeRecoveryFlag
int gdr_recovery_point_poc; ///< recoveryPointPocVal
/**
* Sequence counters for decoded and output frames, so that old
* frames are output first after a POC reset
*/
uint16_t seq_decode;
uint16_t seq_output;
struct FFExecutor *executor;
VVCFrameContext *fcs;
int nb_fcs;
uint64_t nb_frames; ///< processed frames
int nb_delayed; ///< delayed frames
} VVCContext ;
#endif /* AVCODEC_VVC_DEC_H */
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