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FFmpeg/libavcodec/hevcdec.h
Andreas Rheinhardt 14015b9e15 avcodec/hevcdec: Check early whether film grain is supported, fix race 
Applying film grain happens after ff_thread_finish_setup(),
so the parameters synced in hevc_update_thread_context() must not
be modified. But this is exactly what happens in case applying
film grain fails. (The likely result is that in case of frame threading
an uninitialized frame is output.)

Given that it is actually very easy to know in advance whether
ff_h274_apply_film_grain() supports a given set of parameters,
one can check for this before ff_thread_finish_setup()
and avoid allocating an unused buffer lateron.

Reviewed-by: Niklas Haas <ffmpeg@haasn.xyz>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2023-09-26 21:06:14 +02:00

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/*
* HEVC video decoder
*
* Copyright (C) 2012 - 2013 Guillaume Martres
*
* 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_HEVCDEC_H
#define AVCODEC_HEVCDEC_H
#include <stdatomic.h>
#include "libavutil/buffer.h"
#include "libavutil/mem_internal.h"
#include "avcodec.h"
#include "bswapdsp.h"
#include "cabac.h"
#include "dovi_rpu.h"
#include "get_bits.h"
#include "hevcpred.h"
#include "h2645_parse.h"
#include "hevc.h"
#include "hevc_ps.h"
#include "hevc_sei.h"
#include "hevcdsp.h"
#include "h274.h"
#include "threadframe.h"
#include "videodsp.h"
#define SHIFT_CTB_WPP 2
#define MAX_TB_SIZE 32
#define MAX_QP 51
#define DEFAULT_INTRA_TC_OFFSET 2
#define HEVC_CONTEXTS 199
#define HEVC_STAT_COEFFS 4
#define MRG_MAX_NUM_CANDS 5
#define L0 0
#define L1 1
#define EPEL_EXTRA_BEFORE 1
#define EPEL_EXTRA_AFTER 2
#define EPEL_EXTRA 3
#define QPEL_EXTRA_BEFORE 3
#define QPEL_EXTRA_AFTER 4
#define QPEL_EXTRA 7
#define EDGE_EMU_BUFFER_STRIDE 80
/**
* Value of the luma sample at position (x, y) in the 2D array tab.
*/
#define SAMPLE(tab, x, y) ((tab)[(y) * s->sps->width + (x)])
#define SAMPLE_CTB(tab, x, y) ((tab)[(y) * min_cb_width + (x)])
#define IS_IDR(s) ((s)->nal_unit_type == HEVC_NAL_IDR_W_RADL || (s)->nal_unit_type == HEVC_NAL_IDR_N_LP)
#define IS_BLA(s) ((s)->nal_unit_type == HEVC_NAL_BLA_W_RADL || (s)->nal_unit_type == HEVC_NAL_BLA_W_LP || \
(s)->nal_unit_type == HEVC_NAL_BLA_N_LP)
#define IS_IRAP(s) ((s)->nal_unit_type >= HEVC_NAL_BLA_W_LP && (s)->nal_unit_type <= HEVC_NAL_RSV_IRAP_VCL23)
enum RPSType {
ST_CURR_BEF = 0,
ST_CURR_AFT,
ST_FOLL,
LT_CURR,
LT_FOLL,
NB_RPS_TYPE,
};
enum SyntaxElement {
SAO_MERGE_FLAG = 0,
SAO_TYPE_IDX,
SAO_EO_CLASS,
SAO_BAND_POSITION,
SAO_OFFSET_ABS,
SAO_OFFSET_SIGN,
END_OF_SLICE_FLAG,
SPLIT_CODING_UNIT_FLAG,
CU_TRANSQUANT_BYPASS_FLAG,
SKIP_FLAG,
CU_QP_DELTA,
PRED_MODE_FLAG,
PART_MODE,
PCM_FLAG,
PREV_INTRA_LUMA_PRED_FLAG,
MPM_IDX,
REM_INTRA_LUMA_PRED_MODE,
INTRA_CHROMA_PRED_MODE,
MERGE_FLAG,
MERGE_IDX,
INTER_PRED_IDC,
REF_IDX_L0,
REF_IDX_L1,
ABS_MVD_GREATER0_FLAG,
ABS_MVD_GREATER1_FLAG,
ABS_MVD_MINUS2,
MVD_SIGN_FLAG,
MVP_LX_FLAG,
NO_RESIDUAL_DATA_FLAG,
SPLIT_TRANSFORM_FLAG,
CBF_LUMA,
CBF_CB_CR,
TRANSFORM_SKIP_FLAG,
EXPLICIT_RDPCM_FLAG,
EXPLICIT_RDPCM_DIR_FLAG,
LAST_SIGNIFICANT_COEFF_X_PREFIX,
LAST_SIGNIFICANT_COEFF_Y_PREFIX,
LAST_SIGNIFICANT_COEFF_X_SUFFIX,
LAST_SIGNIFICANT_COEFF_Y_SUFFIX,
SIGNIFICANT_COEFF_GROUP_FLAG,
SIGNIFICANT_COEFF_FLAG,
COEFF_ABS_LEVEL_GREATER1_FLAG,
COEFF_ABS_LEVEL_GREATER2_FLAG,
COEFF_ABS_LEVEL_REMAINING,
COEFF_SIGN_FLAG,
LOG2_RES_SCALE_ABS,
RES_SCALE_SIGN_FLAG,
CU_CHROMA_QP_OFFSET_FLAG,
CU_CHROMA_QP_OFFSET_IDX,
};
enum PartMode {
PART_2Nx2N = 0,
PART_2NxN = 1,
PART_Nx2N = 2,
PART_NxN = 3,
PART_2NxnU = 4,
PART_2NxnD = 5,
PART_nLx2N = 6,
PART_nRx2N = 7,
};
enum PredMode {
MODE_INTER = 0,
MODE_INTRA,
MODE_SKIP,
};
enum InterPredIdc {
PRED_L0 = 0,
PRED_L1,
PRED_BI,
};
enum PredFlag {
PF_INTRA = 0,
PF_L0,
PF_L1,
PF_BI,
};
enum IntraPredMode {
INTRA_PLANAR = 0,
INTRA_DC,
INTRA_ANGULAR_2,
INTRA_ANGULAR_3,
INTRA_ANGULAR_4,
INTRA_ANGULAR_5,
INTRA_ANGULAR_6,
INTRA_ANGULAR_7,
INTRA_ANGULAR_8,
INTRA_ANGULAR_9,
INTRA_ANGULAR_10,
INTRA_ANGULAR_11,
INTRA_ANGULAR_12,
INTRA_ANGULAR_13,
INTRA_ANGULAR_14,
INTRA_ANGULAR_15,
INTRA_ANGULAR_16,
INTRA_ANGULAR_17,
INTRA_ANGULAR_18,
INTRA_ANGULAR_19,
INTRA_ANGULAR_20,
INTRA_ANGULAR_21,
INTRA_ANGULAR_22,
INTRA_ANGULAR_23,
INTRA_ANGULAR_24,
INTRA_ANGULAR_25,
INTRA_ANGULAR_26,
INTRA_ANGULAR_27,
INTRA_ANGULAR_28,
INTRA_ANGULAR_29,
INTRA_ANGULAR_30,
INTRA_ANGULAR_31,
INTRA_ANGULAR_32,
INTRA_ANGULAR_33,
INTRA_ANGULAR_34,
};
enum SAOType {
SAO_NOT_APPLIED = 0,
SAO_BAND,
SAO_EDGE,
SAO_APPLIED
};
enum SAOEOClass {
SAO_EO_HORIZ = 0,
SAO_EO_VERT,
SAO_EO_135D,
SAO_EO_45D,
};
enum ScanType {
SCAN_DIAG = 0,
SCAN_HORIZ,
SCAN_VERT,
};
typedef struct HEVCCABACState {
uint8_t state[HEVC_CONTEXTS];
uint8_t stat_coeff[HEVC_STAT_COEFFS];
} HEVCCABACState;
typedef struct LongTermRPS {
int poc[32];
uint8_t poc_msb_present[32];
uint8_t used[32];
uint8_t nb_refs;
} LongTermRPS;
typedef struct RefPicList {
struct HEVCFrame *ref[HEVC_MAX_REFS];
int list[HEVC_MAX_REFS];
int isLongTerm[HEVC_MAX_REFS];
int nb_refs;
} RefPicList;
typedef struct RefPicListTab {
RefPicList refPicList[2];
} RefPicListTab;
typedef struct SliceHeader {
unsigned int pps_id;
///< address (in raster order) of the first block in the current slice segment
unsigned int slice_segment_addr;
///< address (in raster order) of the first block in the current slice
unsigned int slice_addr;
enum HEVCSliceType slice_type;
int pic_order_cnt_lsb;
uint8_t first_slice_in_pic_flag;
uint8_t dependent_slice_segment_flag;
uint8_t pic_output_flag;
uint8_t colour_plane_id;
///< RPS coded in the slice header itself is stored here
int short_term_ref_pic_set_sps_flag;
int short_term_ref_pic_set_size;
ShortTermRPS slice_rps;
const ShortTermRPS *short_term_rps;
int long_term_ref_pic_set_size;
LongTermRPS long_term_rps;
unsigned int list_entry_lx[2][32];
uint8_t rpl_modification_flag[2];
uint8_t no_output_of_prior_pics_flag;
uint8_t slice_temporal_mvp_enabled_flag;
unsigned int nb_refs[2];
uint8_t slice_sample_adaptive_offset_flag[3];
uint8_t mvd_l1_zero_flag;
uint8_t cabac_init_flag;
uint8_t disable_deblocking_filter_flag; ///< slice_header_disable_deblocking_filter_flag
uint8_t slice_loop_filter_across_slices_enabled_flag;
uint8_t collocated_list;
unsigned int collocated_ref_idx;
int slice_qp_delta;
int slice_cb_qp_offset;
int slice_cr_qp_offset;
int slice_act_y_qp_offset;
int slice_act_cb_qp_offset;
int slice_act_cr_qp_offset;
uint8_t cu_chroma_qp_offset_enabled_flag;
int beta_offset; ///< beta_offset_div2 * 2
int tc_offset; ///< tc_offset_div2 * 2
uint8_t max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand
uint8_t use_integer_mv_flag;
unsigned *entry_point_offset;
int * offset;
int * size;
int num_entry_point_offsets;
int8_t slice_qp;
uint8_t luma_log2_weight_denom;
int16_t chroma_log2_weight_denom;
int16_t luma_weight_l0[16];
int16_t chroma_weight_l0[16][2];
int16_t chroma_weight_l1[16][2];
int16_t luma_weight_l1[16];
int16_t luma_offset_l0[16];
int16_t chroma_offset_l0[16][2];
int16_t luma_offset_l1[16];
int16_t chroma_offset_l1[16][2];
int slice_ctb_addr_rs;
} SliceHeader;
typedef struct CodingUnit {
int x;
int y;
enum PredMode pred_mode; ///< PredMode
enum PartMode part_mode; ///< PartMode
// Inferred parameters
uint8_t intra_split_flag; ///< IntraSplitFlag
uint8_t max_trafo_depth; ///< MaxTrafoDepth
uint8_t cu_transquant_bypass_flag;
} CodingUnit;
typedef struct Mv {
int16_t x; ///< horizontal component of motion vector
int16_t y; ///< vertical component of motion vector
} Mv;
typedef struct MvField {
DECLARE_ALIGNED(4, Mv, mv)[2];
int8_t ref_idx[2];
int8_t pred_flag;
} MvField;
typedef struct NeighbourAvailable {
int cand_bottom_left;
int cand_left;
int cand_up;
int cand_up_left;
int cand_up_right;
int cand_up_right_sap;
} NeighbourAvailable;
typedef struct PredictionUnit {
int mpm_idx;
int rem_intra_luma_pred_mode;
uint8_t intra_pred_mode[4];
Mv mvd;
uint8_t merge_flag;
uint8_t intra_pred_mode_c[4];
uint8_t chroma_mode_c[4];
} PredictionUnit;
typedef struct TransformUnit {
int cu_qp_delta;
int res_scale_val;
// Inferred parameters;
int intra_pred_mode;
int intra_pred_mode_c;
int chroma_mode_c;
uint8_t is_cu_qp_delta_coded;
uint8_t is_cu_chroma_qp_offset_coded;
int8_t cu_qp_offset_cb;
int8_t cu_qp_offset_cr;
uint8_t cross_pf;
} TransformUnit;
typedef struct DBParams {
int beta_offset;
int tc_offset;
} DBParams;
#define HEVC_FRAME_FLAG_OUTPUT (1 << 0)
#define HEVC_FRAME_FLAG_SHORT_REF (1 << 1)
#define HEVC_FRAME_FLAG_LONG_REF (1 << 2)
#define HEVC_FRAME_FLAG_BUMPING (1 << 3)
#define HEVC_SEQUENCE_COUNTER_MASK 0xff
#define HEVC_SEQUENCE_COUNTER_INVALID (HEVC_SEQUENCE_COUNTER_MASK + 1)
typedef struct HEVCFrame {
AVFrame *frame;
AVFrame *frame_grain;
ThreadFrame tf;
int needs_fg; /* 1 if grain needs to be applied by the decoder */
MvField *tab_mvf;
RefPicList *refPicList;
RefPicListTab **rpl_tab;
int ctb_count;
int poc;
struct HEVCFrame *collocated_ref;
AVBufferRef *tab_mvf_buf;
AVBufferRef *rpl_tab_buf;
AVBufferRef *rpl_buf;
AVBufferRef *hwaccel_priv_buf;
void *hwaccel_picture_private;
/**
* A sequence counter, so that old frames are output first
* after a POC reset
*/
uint16_t sequence;
/**
* A combination of HEVC_FRAME_FLAG_*
*/
uint8_t flags;
} HEVCFrame;
typedef struct HEVCLocalContext {
uint8_t cabac_state[HEVC_CONTEXTS];
uint8_t stat_coeff[HEVC_STAT_COEFFS];
uint8_t first_qp_group;
void *logctx;
const struct HEVCContext *parent;
GetBitContext gb;
CABACContext cc;
/**
* This is a pointer to the common CABAC state.
* In case entropy_coding_sync_enabled_flag is set,
* the CABAC state after decoding the second CTU in a row is
* stored here and used to initialize the CABAC state before
* decoding the first CTU in the next row.
* This is the basis for WPP and in case slice-threading is used,
* the next row is decoded by another thread making this state
* shared between threads.
*/
HEVCCABACState *common_cabac_state;
int8_t qp_y;
int8_t curr_qp_y;
int qPy_pred;
TransformUnit tu;
uint8_t ctb_left_flag;
uint8_t ctb_up_flag;
uint8_t ctb_up_right_flag;
uint8_t ctb_up_left_flag;
int end_of_tiles_x;
int end_of_tiles_y;
/* +7 is for subpixel interpolation, *2 for high bit depths */
DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
/* The extended size between the new edge emu buffer is abused by SAO */
DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer2)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
DECLARE_ALIGNED(32, int16_t, tmp)[MAX_PB_SIZE * MAX_PB_SIZE];
int ct_depth;
CodingUnit cu;
PredictionUnit pu;
NeighbourAvailable na;
#define BOUNDARY_LEFT_SLICE (1 << 0)
#define BOUNDARY_LEFT_TILE (1 << 1)
#define BOUNDARY_UPPER_SLICE (1 << 2)
#define BOUNDARY_UPPER_TILE (1 << 3)
/* properties of the boundary of the current CTB for the purposes
* of the deblocking filter */
int boundary_flags;
} HEVCLocalContext;
typedef struct HEVCContext {
const AVClass *c; // needed by private avoptions
AVCodecContext *avctx;
HEVCLocalContext **HEVClcList;
HEVCLocalContext *HEVClc;
uint8_t threads_type;
uint8_t threads_number;
int width;
int height;
/** 1 if the independent slice segment header was successfully parsed */
uint8_t slice_initialized;
AVFrame *frame;
AVFrame *output_frame;
uint8_t *sao_pixel_buffer_h[3];
uint8_t *sao_pixel_buffer_v[3];
HEVCParamSets ps;
HEVCSEI sei;
struct AVMD5 *md5_ctx;
AVBufferPool *tab_mvf_pool;
AVBufferPool *rpl_tab_pool;
///< candidate references for the current frame
RefPicList rps[5];
SliceHeader sh;
SAOParams *sao;
DBParams *deblock;
enum HEVCNALUnitType nal_unit_type;
int temporal_id; ///< temporal_id_plus1 - 1
HEVCFrame *ref;
HEVCFrame DPB[32];
int poc;
int pocTid0;
int slice_idx; ///< number of the slice being currently decoded
int eos; ///< current packet contains an EOS/EOB NAL
int last_eos; ///< last packet contains an EOS/EOB NAL
int max_ra;
int bs_width;
int bs_height;
int overlap;
int is_decoded;
int no_rasl_output_flag;
HEVCPredContext hpc;
HEVCDSPContext hevcdsp;
VideoDSPContext vdsp;
BswapDSPContext bdsp;
H274FilmGrainDatabase h274db;
int8_t *qp_y_tab;
uint8_t *horizontal_bs;
uint8_t *vertical_bs;
int32_t *tab_slice_address;
// CU
uint8_t *skip_flag;
uint8_t *tab_ct_depth;
// PU
uint8_t *tab_ipm;
uint8_t *cbf_luma; // cbf_luma of colocated TU
uint8_t *is_pcm;
// CTB-level flags affecting loop filter operation
uint8_t *filter_slice_edges;
/** used on BE to byteswap the lines for checksumming */
uint8_t *checksum_buf;
int checksum_buf_size;
/**
* 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;
/** The target for the common_cabac_state of the local contexts. */
HEVCCABACState cabac;
int enable_parallel_tiles;
atomic_int wpp_err;
const uint8_t *data;
H2645Packet pkt;
// type of the first VCL NAL of the current frame
enum HEVCNALUnitType first_nal_type;
int is_nalff; ///< this flag is != 0 if bitstream is encapsulated
///< as a format defined in 14496-15
int apply_defdispwin;
int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
int nuh_layer_id;
int film_grain_warning_shown;
AVBufferRef *rpu_buf; ///< 0 or 1 Dolby Vision RPUs.
DOVIContext dovi_ctx; ///< Dolby Vision decoding context
} HEVCContext;
/**
* Mark all frames in DPB as unused for reference.
*/
void ff_hevc_clear_refs(HEVCContext *s);
/**
* Drop all frames currently in DPB.
*/
void ff_hevc_flush_dpb(HEVCContext *s);
const RefPicList *ff_hevc_get_ref_list(const HEVCContext *s, const HEVCFrame *frame,
int x0, int y0);
/**
* Construct the reference picture sets for the current frame.
*/
int ff_hevc_frame_rps(HEVCContext *s);
/**
* Construct the reference picture list(s) for the current slice.
*/
int ff_hevc_slice_rpl(HEVCContext *s);
void ff_hevc_save_states(HEVCLocalContext *lc, int ctb_addr_ts);
int ff_hevc_cabac_init(HEVCLocalContext *lc, int ctb_addr_ts);
int ff_hevc_sao_merge_flag_decode(HEVCLocalContext *lc);
int ff_hevc_sao_type_idx_decode(HEVCLocalContext *lc);
int ff_hevc_sao_band_position_decode(HEVCLocalContext *lc);
int ff_hevc_sao_offset_abs_decode(HEVCLocalContext *lc);
int ff_hevc_sao_offset_sign_decode(HEVCLocalContext *lc);
int ff_hevc_sao_eo_class_decode(HEVCLocalContext *lc);
int ff_hevc_end_of_slice_flag_decode(HEVCLocalContext *lc);
int ff_hevc_cu_transquant_bypass_flag_decode(HEVCLocalContext *lc);
int ff_hevc_skip_flag_decode(HEVCLocalContext *lc, int x0, int y0,
int x_cb, int y_cb);
int ff_hevc_pred_mode_decode(HEVCLocalContext *lc);
int ff_hevc_split_coding_unit_flag_decode(HEVCLocalContext *lc, int ct_depth,
int x0, int y0);
int ff_hevc_part_mode_decode(HEVCLocalContext *lc, int log2_cb_size);
int ff_hevc_pcm_flag_decode(HEVCLocalContext *lc);
int ff_hevc_prev_intra_luma_pred_flag_decode(HEVCLocalContext *lc);
int ff_hevc_mpm_idx_decode(HEVCLocalContext *lc);
int ff_hevc_rem_intra_luma_pred_mode_decode(HEVCLocalContext *lc);
int ff_hevc_intra_chroma_pred_mode_decode(HEVCLocalContext *lc);
int ff_hevc_merge_idx_decode(HEVCLocalContext *lc);
int ff_hevc_merge_flag_decode(HEVCLocalContext *lc);
int ff_hevc_inter_pred_idc_decode(HEVCLocalContext *lc, int nPbW, int nPbH);
int ff_hevc_ref_idx_lx_decode(HEVCLocalContext *lc, int num_ref_idx_lx);
int ff_hevc_mvp_lx_flag_decode(HEVCLocalContext *lc);
int ff_hevc_no_residual_syntax_flag_decode(HEVCLocalContext *lc);
int ff_hevc_split_transform_flag_decode(HEVCLocalContext *lc, int log2_trafo_size);
int ff_hevc_cbf_cb_cr_decode(HEVCLocalContext *lc, int trafo_depth);
int ff_hevc_cbf_luma_decode(HEVCLocalContext *lc, int trafo_depth);
int ff_hevc_log2_res_scale_abs(HEVCLocalContext *lc, int idx);
int ff_hevc_res_scale_sign_flag(HEVCLocalContext *lc, int idx);
/**
* Get the number of candidate references for the current frame.
*/
int ff_hevc_frame_nb_refs(const HEVCContext *s);
int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc);
static av_always_inline int ff_hevc_nal_is_nonref(enum HEVCNALUnitType type)
{
switch (type) {
case HEVC_NAL_TRAIL_N:
case HEVC_NAL_TSA_N:
case HEVC_NAL_STSA_N:
case HEVC_NAL_RADL_N:
case HEVC_NAL_RASL_N:
case HEVC_NAL_VCL_N10:
case HEVC_NAL_VCL_N12:
case HEVC_NAL_VCL_N14:
return 1;
default: break;
}
return 0;
}
/**
* Find next frame in output order and put a reference to it in frame.
* @return 1 if a frame was output, 0 otherwise
*/
int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush);
void ff_hevc_bump_frame(HEVCContext *s);
void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags);
void ff_hevc_set_neighbour_available(HEVCLocalContext *lc, int x0, int y0,
int nPbW, int nPbH);
void ff_hevc_luma_mv_merge_mode(HEVCLocalContext *lc, int x0, int y0,
int nPbW, int nPbH, int log2_cb_size,
int part_idx, int merge_idx, MvField *mv);
void ff_hevc_luma_mv_mvp_mode(HEVCLocalContext *lc, int x0, int y0,
int nPbW, int nPbH, int log2_cb_size,
int part_idx, int merge_idx,
MvField *mv, int mvp_lx_flag, int LX);
void ff_hevc_hls_filter(HEVCLocalContext *lc, int x, int y, int ctb_size);
void ff_hevc_hls_filters(HEVCLocalContext *lc, int x_ctb, int y_ctb, int ctb_size);
void ff_hevc_set_qPy(HEVCLocalContext *lc, int xBase, int yBase,
int log2_cb_size);
void ff_hevc_deblocking_boundary_strengths(HEVCLocalContext *lc, int x0, int y0,
int log2_trafo_size);
int ff_hevc_cu_qp_delta_sign_flag(HEVCLocalContext *lc);
int ff_hevc_cu_qp_delta_abs(HEVCLocalContext *lc);
int ff_hevc_cu_chroma_qp_offset_flag(HEVCLocalContext *lc);
int ff_hevc_cu_chroma_qp_offset_idx(HEVCLocalContext *lc);
void ff_hevc_hls_residual_coding(HEVCLocalContext *lc, int x0, int y0,
int log2_trafo_size, enum ScanType scan_idx,
int c_idx);
void ff_hevc_hls_mvd_coding(HEVCLocalContext *lc, int x0, int y0, int log2_cb_size);
extern const uint8_t ff_hevc_qpel_extra_before[4];
extern const uint8_t ff_hevc_qpel_extra_after[4];
extern const uint8_t ff_hevc_qpel_extra[4];
#endif /* AVCODEC_HEVCDEC_H */
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