GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/hevcdec.h Lines: 4 6 66.7 %
Date: 2019-11-18 18:00:01 Branches: 1 2 50.0 %

Line Branch Exec Source
1
/*
2
 * HEVC video decoder
3
 *
4
 * Copyright (C) 2012 - 2013 Guillaume Martres
5
 *
6
 * This file is part of FFmpeg.
7
 *
8
 * FFmpeg is free software; you can redistribute it and/or
9
 * modify it under the terms of the GNU Lesser General Public
10
 * License as published by the Free Software Foundation; either
11
 * version 2.1 of the License, or (at your option) any later version.
12
 *
13
 * FFmpeg is distributed in the hope that it will be useful,
14
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16
 * Lesser General Public License for more details.
17
 *
18
 * You should have received a copy of the GNU Lesser General Public
19
 * License along with FFmpeg; if not, write to the Free Software
20
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21
 */
22
23
#ifndef AVCODEC_HEVCDEC_H
24
#define AVCODEC_HEVCDEC_H
25
26
#include <stdatomic.h>
27
28
#include "libavutil/buffer.h"
29
#include "libavutil/md5.h"
30
31
#include "avcodec.h"
32
#include "bswapdsp.h"
33
#include "cabac.h"
34
#include "get_bits.h"
35
#include "hevcpred.h"
36
#include "h2645_parse.h"
37
#include "hevc.h"
38
#include "hevc_ps.h"
39
#include "hevc_sei.h"
40
#include "hevcdsp.h"
41
#include "internal.h"
42
#include "thread.h"
43
#include "videodsp.h"
44
45
#define MAX_NB_THREADS 16
46
#define SHIFT_CTB_WPP 2
47
48
//TODO: check if this is really the maximum
49
#define MAX_TRANSFORM_DEPTH 5
50
51
#define MAX_TB_SIZE 32
52
#define MAX_QP 51
53
#define DEFAULT_INTRA_TC_OFFSET 2
54
55
#define HEVC_CONTEXTS 199
56
57
#define MRG_MAX_NUM_CANDS     5
58
59
#define L0 0
60
#define L1 1
61
62
#define EPEL_EXTRA_BEFORE 1
63
#define EPEL_EXTRA_AFTER  2
64
#define EPEL_EXTRA        3
65
#define QPEL_EXTRA_BEFORE 3
66
#define QPEL_EXTRA_AFTER  4
67
#define QPEL_EXTRA        7
68
69
#define EDGE_EMU_BUFFER_STRIDE 80
70
71
/**
72
 * Value of the luma sample at position (x, y) in the 2D array tab.
73
 */
74
#define SAMPLE(tab, x, y) ((tab)[(y) * s->sps->width + (x)])
75
#define SAMPLE_CTB(tab, x, y) ((tab)[(y) * min_cb_width + (x)])
76
77
#define IS_IDR(s) ((s)->nal_unit_type == HEVC_NAL_IDR_W_RADL || (s)->nal_unit_type == HEVC_NAL_IDR_N_LP)
78
#define IS_BLA(s) ((s)->nal_unit_type == HEVC_NAL_BLA_W_RADL || (s)->nal_unit_type == HEVC_NAL_BLA_W_LP || \
79
                   (s)->nal_unit_type == HEVC_NAL_BLA_N_LP)
80
#define IS_IRAP(s) ((s)->nal_unit_type >= 16 && (s)->nal_unit_type <= 23)
81
82
enum RPSType {
83
    ST_CURR_BEF = 0,
84
    ST_CURR_AFT,
85
    ST_FOLL,
86
    LT_CURR,
87
    LT_FOLL,
88
    NB_RPS_TYPE,
89
};
90
91
enum SyntaxElement {
92
    SAO_MERGE_FLAG = 0,
93
    SAO_TYPE_IDX,
94
    SAO_EO_CLASS,
95
    SAO_BAND_POSITION,
96
    SAO_OFFSET_ABS,
97
    SAO_OFFSET_SIGN,
98
    END_OF_SLICE_FLAG,
99
    SPLIT_CODING_UNIT_FLAG,
100
    CU_TRANSQUANT_BYPASS_FLAG,
101
    SKIP_FLAG,
102
    CU_QP_DELTA,
103
    PRED_MODE_FLAG,
104
    PART_MODE,
105
    PCM_FLAG,
106
    PREV_INTRA_LUMA_PRED_FLAG,
107
    MPM_IDX,
108
    REM_INTRA_LUMA_PRED_MODE,
109
    INTRA_CHROMA_PRED_MODE,
110
    MERGE_FLAG,
111
    MERGE_IDX,
112
    INTER_PRED_IDC,
113
    REF_IDX_L0,
114
    REF_IDX_L1,
115
    ABS_MVD_GREATER0_FLAG,
116
    ABS_MVD_GREATER1_FLAG,
117
    ABS_MVD_MINUS2,
118
    MVD_SIGN_FLAG,
119
    MVP_LX_FLAG,
120
    NO_RESIDUAL_DATA_FLAG,
121
    SPLIT_TRANSFORM_FLAG,
122
    CBF_LUMA,
123
    CBF_CB_CR,
124
    TRANSFORM_SKIP_FLAG,
125
    EXPLICIT_RDPCM_FLAG,
126
    EXPLICIT_RDPCM_DIR_FLAG,
127
    LAST_SIGNIFICANT_COEFF_X_PREFIX,
128
    LAST_SIGNIFICANT_COEFF_Y_PREFIX,
129
    LAST_SIGNIFICANT_COEFF_X_SUFFIX,
130
    LAST_SIGNIFICANT_COEFF_Y_SUFFIX,
131
    SIGNIFICANT_COEFF_GROUP_FLAG,
132
    SIGNIFICANT_COEFF_FLAG,
133
    COEFF_ABS_LEVEL_GREATER1_FLAG,
134
    COEFF_ABS_LEVEL_GREATER2_FLAG,
135
    COEFF_ABS_LEVEL_REMAINING,
136
    COEFF_SIGN_FLAG,
137
    LOG2_RES_SCALE_ABS,
138
    RES_SCALE_SIGN_FLAG,
139
    CU_CHROMA_QP_OFFSET_FLAG,
140
    CU_CHROMA_QP_OFFSET_IDX,
141
};
142
143
enum PartMode {
144
    PART_2Nx2N = 0,
145
    PART_2NxN  = 1,
146
    PART_Nx2N  = 2,
147
    PART_NxN   = 3,
148
    PART_2NxnU = 4,
149
    PART_2NxnD = 5,
150
    PART_nLx2N = 6,
151
    PART_nRx2N = 7,
152
};
153
154
enum PredMode {
155
    MODE_INTER = 0,
156
    MODE_INTRA,
157
    MODE_SKIP,
158
};
159
160
enum InterPredIdc {
161
    PRED_L0 = 0,
162
    PRED_L1,
163
    PRED_BI,
164
};
165
166
enum PredFlag {
167
    PF_INTRA = 0,
168
    PF_L0,
169
    PF_L1,
170
    PF_BI,
171
};
172
173
enum IntraPredMode {
174
    INTRA_PLANAR = 0,
175
    INTRA_DC,
176
    INTRA_ANGULAR_2,
177
    INTRA_ANGULAR_3,
178
    INTRA_ANGULAR_4,
179
    INTRA_ANGULAR_5,
180
    INTRA_ANGULAR_6,
181
    INTRA_ANGULAR_7,
182
    INTRA_ANGULAR_8,
183
    INTRA_ANGULAR_9,
184
    INTRA_ANGULAR_10,
185
    INTRA_ANGULAR_11,
186
    INTRA_ANGULAR_12,
187
    INTRA_ANGULAR_13,
188
    INTRA_ANGULAR_14,
189
    INTRA_ANGULAR_15,
190
    INTRA_ANGULAR_16,
191
    INTRA_ANGULAR_17,
192
    INTRA_ANGULAR_18,
193
    INTRA_ANGULAR_19,
194
    INTRA_ANGULAR_20,
195
    INTRA_ANGULAR_21,
196
    INTRA_ANGULAR_22,
197
    INTRA_ANGULAR_23,
198
    INTRA_ANGULAR_24,
199
    INTRA_ANGULAR_25,
200
    INTRA_ANGULAR_26,
201
    INTRA_ANGULAR_27,
202
    INTRA_ANGULAR_28,
203
    INTRA_ANGULAR_29,
204
    INTRA_ANGULAR_30,
205
    INTRA_ANGULAR_31,
206
    INTRA_ANGULAR_32,
207
    INTRA_ANGULAR_33,
208
    INTRA_ANGULAR_34,
209
};
210
211
enum SAOType {
212
    SAO_NOT_APPLIED = 0,
213
    SAO_BAND,
214
    SAO_EDGE,
215
    SAO_APPLIED
216
};
217
218
enum SAOEOClass {
219
    SAO_EO_HORIZ = 0,
220
    SAO_EO_VERT,
221
    SAO_EO_135D,
222
    SAO_EO_45D,
223
};
224
225
enum ScanType {
226
    SCAN_DIAG = 0,
227
    SCAN_HORIZ,
228
    SCAN_VERT,
229
};
230
231
typedef struct RefPicList {
232
    struct HEVCFrame *ref[HEVC_MAX_REFS];
233
    int list[HEVC_MAX_REFS];
234
    int isLongTerm[HEVC_MAX_REFS];
235
    int nb_refs;
236
} RefPicList;
237
238
typedef struct RefPicListTab {
239
    RefPicList refPicList[2];
240
} RefPicListTab;
241
242
typedef struct CodingUnit {
243
    int x;
244
    int y;
245
246
    enum PredMode pred_mode;    ///< PredMode
247
    enum PartMode part_mode;    ///< PartMode
248
249
    // Inferred parameters
250
    uint8_t intra_split_flag;   ///< IntraSplitFlag
251
    uint8_t max_trafo_depth;    ///< MaxTrafoDepth
252
    uint8_t cu_transquant_bypass_flag;
253
} CodingUnit;
254
255
typedef struct Mv {
256
    int16_t x;  ///< horizontal component of motion vector
257
    int16_t y;  ///< vertical component of motion vector
258
} Mv;
259
260
typedef struct MvField {
261
    DECLARE_ALIGNED(4, Mv, mv)[2];
262
    int8_t ref_idx[2];
263
    int8_t pred_flag;
264
} MvField;
265
266
typedef struct NeighbourAvailable {
267
    int cand_bottom_left;
268
    int cand_left;
269
    int cand_up;
270
    int cand_up_left;
271
    int cand_up_right;
272
    int cand_up_right_sap;
273
} NeighbourAvailable;
274
275
typedef struct PredictionUnit {
276
    int mpm_idx;
277
    int rem_intra_luma_pred_mode;
278
    uint8_t intra_pred_mode[4];
279
    Mv mvd;
280
    uint8_t merge_flag;
281
    uint8_t intra_pred_mode_c[4];
282
    uint8_t chroma_mode_c[4];
283
} PredictionUnit;
284
285
typedef struct TransformUnit {
286
    int cu_qp_delta;
287
288
    int res_scale_val;
289
290
    // Inferred parameters;
291
    int intra_pred_mode;
292
    int intra_pred_mode_c;
293
    int chroma_mode_c;
294
    uint8_t is_cu_qp_delta_coded;
295
    uint8_t is_cu_chroma_qp_offset_coded;
296
    int8_t  cu_qp_offset_cb;
297
    int8_t  cu_qp_offset_cr;
298
    uint8_t cross_pf;
299
} TransformUnit;
300
301
typedef struct DBParams {
302
    int beta_offset;
303
    int tc_offset;
304
} DBParams;
305
306
#define HEVC_FRAME_FLAG_OUTPUT    (1 << 0)
307
#define HEVC_FRAME_FLAG_SHORT_REF (1 << 1)
308
#define HEVC_FRAME_FLAG_LONG_REF  (1 << 2)
309
#define HEVC_FRAME_FLAG_BUMPING   (1 << 3)
310
311
typedef struct HEVCFrame {
312
    AVFrame *frame;
313
    ThreadFrame tf;
314
    MvField *tab_mvf;
315
    RefPicList *refPicList;
316
    RefPicListTab **rpl_tab;
317
    int ctb_count;
318
    int poc;
319
    struct HEVCFrame *collocated_ref;
320
321
    AVBufferRef *tab_mvf_buf;
322
    AVBufferRef *rpl_tab_buf;
323
    AVBufferRef *rpl_buf;
324
325
    AVBufferRef *hwaccel_priv_buf;
326
    void *hwaccel_picture_private;
327
328
    /**
329
     * A sequence counter, so that old frames are output first
330
     * after a POC reset
331
     */
332
    uint16_t sequence;
333
334
    /**
335
     * A combination of HEVC_FRAME_FLAG_*
336
     */
337
    uint8_t flags;
338
} HEVCFrame;
339
340
typedef struct HEVCLocalContext {
341
    uint8_t cabac_state[HEVC_CONTEXTS];
342
343
    uint8_t stat_coeff[4];
344
345
    uint8_t first_qp_group;
346
347
    GetBitContext gb;
348
    CABACContext cc;
349
350
    int8_t qp_y;
351
    int8_t curr_qp_y;
352
353
    int qPy_pred;
354
355
    TransformUnit tu;
356
357
    uint8_t ctb_left_flag;
358
    uint8_t ctb_up_flag;
359
    uint8_t ctb_up_right_flag;
360
    uint8_t ctb_up_left_flag;
361
    int     end_of_tiles_x;
362
    int     end_of_tiles_y;
363
    /* +7 is for subpixel interpolation, *2 for high bit depths */
364
    DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
365
    /* The extended size between the new edge emu buffer is abused by SAO */
366
    DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer2)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
367
    DECLARE_ALIGNED(32, int16_t, tmp)[MAX_PB_SIZE * MAX_PB_SIZE];
368
369
    int ct_depth;
370
    CodingUnit cu;
371
    PredictionUnit pu;
372
    NeighbourAvailable na;
373
374
#define BOUNDARY_LEFT_SLICE     (1 << 0)
375
#define BOUNDARY_LEFT_TILE      (1 << 1)
376
#define BOUNDARY_UPPER_SLICE    (1 << 2)
377
#define BOUNDARY_UPPER_TILE     (1 << 3)
378
    /* properties of the boundary of the current CTB for the purposes
379
     * of the deblocking filter */
380
    int boundary_flags;
381
} HEVCLocalContext;
382
383
typedef struct HEVCContext {
384
    const AVClass *c;  // needed by private avoptions
385
    AVCodecContext *avctx;
386
387
    struct HEVCContext  *sList[MAX_NB_THREADS];
388
389
    HEVCLocalContext    *HEVClcList[MAX_NB_THREADS];
390
    HEVCLocalContext    *HEVClc;
391
392
    uint8_t             threads_type;
393
    uint8_t             threads_number;
394
395
    int                 width;
396
    int                 height;
397
398
    uint8_t *cabac_state;
399
400
    /** 1 if the independent slice segment header was successfully parsed */
401
    uint8_t slice_initialized;
402
403
    AVFrame *frame;
404
    AVFrame *output_frame;
405
    uint8_t *sao_pixel_buffer_h[3];
406
    uint8_t *sao_pixel_buffer_v[3];
407
408
    HEVCParamSets ps;
409
    HEVCSEI sei;
410
    struct AVMD5 *md5_ctx;
411
412
    AVBufferPool *tab_mvf_pool;
413
    AVBufferPool *rpl_tab_pool;
414
415
    ///< candidate references for the current frame
416
    RefPicList rps[5];
417
418
    SliceHeader sh;
419
    SAOParams *sao;
420
    DBParams *deblock;
421
    enum HEVCNALUnitType nal_unit_type;
422
    int temporal_id;  ///< temporal_id_plus1 - 1
423
    HEVCFrame *ref;
424
    HEVCFrame DPB[32];
425
    int poc;
426
    int pocTid0;
427
    int slice_idx; ///< number of the slice being currently decoded
428
    int eos;       ///< current packet contains an EOS/EOB NAL
429
    int last_eos;  ///< last packet contains an EOS/EOB NAL
430
    int max_ra;
431
    int bs_width;
432
    int bs_height;
433
    int overlap;
434
435
    int is_decoded;
436
    int no_rasl_output_flag;
437
438
    HEVCPredContext hpc;
439
    HEVCDSPContext hevcdsp;
440
    VideoDSPContext vdsp;
441
    BswapDSPContext bdsp;
442
    int8_t *qp_y_tab;
443
    uint8_t *horizontal_bs;
444
    uint8_t *vertical_bs;
445
446
    int32_t *tab_slice_address;
447
448
    //  CU
449
    uint8_t *skip_flag;
450
    uint8_t *tab_ct_depth;
451
    // PU
452
    uint8_t *tab_ipm;
453
454
    uint8_t *cbf_luma; // cbf_luma of colocated TU
455
    uint8_t *is_pcm;
456
457
    // CTB-level flags affecting loop filter operation
458
    uint8_t *filter_slice_edges;
459
460
    /** used on BE to byteswap the lines for checksumming */
461
    uint8_t *checksum_buf;
462
    int      checksum_buf_size;
463
464
    /**
465
     * Sequence counters for decoded and output frames, so that old
466
     * frames are output first after a POC reset
467
     */
468
    uint16_t seq_decode;
469
    uint16_t seq_output;
470
471
    int enable_parallel_tiles;
472
    atomic_int wpp_err;
473
474
    const uint8_t *data;
475
476
    H2645Packet pkt;
477
    // type of the first VCL NAL of the current frame
478
    enum HEVCNALUnitType first_nal_type;
479
480
    uint8_t context_initialized;
481
    int is_nalff;           ///< this flag is != 0 if bitstream is encapsulated
482
                            ///< as a format defined in 14496-15
483
    int apply_defdispwin;
484
485
    int nal_length_size;    ///< Number of bytes used for nal length (1, 2 or 4)
486
    int nuh_layer_id;
487
} HEVCContext;
488
489
/**
490
 * Mark all frames in DPB as unused for reference.
491
 */
492
void ff_hevc_clear_refs(HEVCContext *s);
493
494
/**
495
 * Drop all frames currently in DPB.
496
 */
497
void ff_hevc_flush_dpb(HEVCContext *s);
498
499
RefPicList *ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *frame,
500
                                 int x0, int y0);
501
502
/**
503
 * Construct the reference picture sets for the current frame.
504
 */
505
int ff_hevc_frame_rps(HEVCContext *s);
506
507
/**
508
 * Construct the reference picture list(s) for the current slice.
509
 */
510
int ff_hevc_slice_rpl(HEVCContext *s);
511
512
void ff_hevc_save_states(HEVCContext *s, int ctb_addr_ts);
513
int ff_hevc_cabac_init(HEVCContext *s, int ctb_addr_ts);
514
int ff_hevc_sao_merge_flag_decode(HEVCContext *s);
515
int ff_hevc_sao_type_idx_decode(HEVCContext *s);
516
int ff_hevc_sao_band_position_decode(HEVCContext *s);
517
int ff_hevc_sao_offset_abs_decode(HEVCContext *s);
518
int ff_hevc_sao_offset_sign_decode(HEVCContext *s);
519
int ff_hevc_sao_eo_class_decode(HEVCContext *s);
520
int ff_hevc_end_of_slice_flag_decode(HEVCContext *s);
521
int ff_hevc_cu_transquant_bypass_flag_decode(HEVCContext *s);
522
int ff_hevc_skip_flag_decode(HEVCContext *s, int x0, int y0,
523
                             int x_cb, int y_cb);
524
int ff_hevc_pred_mode_decode(HEVCContext *s);
525
int ff_hevc_split_coding_unit_flag_decode(HEVCContext *s, int ct_depth,
526
                                          int x0, int y0);
527
int ff_hevc_part_mode_decode(HEVCContext *s, int log2_cb_size);
528
int ff_hevc_pcm_flag_decode(HEVCContext *s);
529
int ff_hevc_prev_intra_luma_pred_flag_decode(HEVCContext *s);
530
int ff_hevc_mpm_idx_decode(HEVCContext *s);
531
int ff_hevc_rem_intra_luma_pred_mode_decode(HEVCContext *s);
532
int ff_hevc_intra_chroma_pred_mode_decode(HEVCContext *s);
533
int ff_hevc_merge_idx_decode(HEVCContext *s);
534
int ff_hevc_merge_flag_decode(HEVCContext *s);
535
int ff_hevc_inter_pred_idc_decode(HEVCContext *s, int nPbW, int nPbH);
536
int ff_hevc_ref_idx_lx_decode(HEVCContext *s, int num_ref_idx_lx);
537
int ff_hevc_mvp_lx_flag_decode(HEVCContext *s);
538
int ff_hevc_no_residual_syntax_flag_decode(HEVCContext *s);
539
int ff_hevc_split_transform_flag_decode(HEVCContext *s, int log2_trafo_size);
540
int ff_hevc_cbf_cb_cr_decode(HEVCContext *s, int trafo_depth);
541
int ff_hevc_cbf_luma_decode(HEVCContext *s, int trafo_depth);
542
int ff_hevc_log2_res_scale_abs(HEVCContext *s, int idx);
543
int ff_hevc_res_scale_sign_flag(HEVCContext *s, int idx);
544
545
/**
546
 * Get the number of candidate references for the current frame.
547
 */
548
int ff_hevc_frame_nb_refs(const HEVCContext *s);
549
550
int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc);
551
552
1020
static av_always_inline int ff_hevc_nal_is_nonref(enum HEVCNALUnitType type)
553
{
554
1020
    switch (type) {
555
    case HEVC_NAL_TRAIL_N:
556
    case HEVC_NAL_TSA_N:
557
    case HEVC_NAL_STSA_N:
558
    case HEVC_NAL_RADL_N:
559
    case HEVC_NAL_RASL_N:
560
    case HEVC_NAL_VCL_N10:
561
    case HEVC_NAL_VCL_N12:
562
    case HEVC_NAL_VCL_N14:
563
        return 1;
564
1020
    default: break;
565
    }
566
1020
    return 0;
567
}
568
569
/**
570
 * Find next frame in output order and put a reference to it in frame.
571
 * @return 1 if a frame was output, 0 otherwise
572
 */
573
int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush);
574
575
void ff_hevc_bump_frame(HEVCContext *s);
576
577
void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags);
578
579
void ff_hevc_set_neighbour_available(HEVCContext *s, int x0, int y0,
580
                                     int nPbW, int nPbH);
581
void ff_hevc_luma_mv_merge_mode(HEVCContext *s, int x0, int y0,
582
                                int nPbW, int nPbH, int log2_cb_size,
583
                                int part_idx, int merge_idx, MvField *mv);
584
void ff_hevc_luma_mv_mvp_mode(HEVCContext *s, int x0, int y0,
585
                              int nPbW, int nPbH, int log2_cb_size,
586
                              int part_idx, int merge_idx,
587
                              MvField *mv, int mvp_lx_flag, int LX);
588
void ff_hevc_set_qPy(HEVCContext *s, int xBase, int yBase,
589
                     int log2_cb_size);
590
void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0,
591
                                           int log2_trafo_size);
592
int ff_hevc_cu_qp_delta_sign_flag(HEVCContext *s);
593
int ff_hevc_cu_qp_delta_abs(HEVCContext *s);
594
int ff_hevc_cu_chroma_qp_offset_flag(HEVCContext *s);
595
int ff_hevc_cu_chroma_qp_offset_idx(HEVCContext *s);
596
void ff_hevc_hls_filter(HEVCContext *s, int x, int y, int ctb_size);
597
void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size);
598
void ff_hevc_hls_residual_coding(HEVCContext *s, int x0, int y0,
599
                                 int log2_trafo_size, enum ScanType scan_idx,
600
                                 int c_idx);
601
602
void ff_hevc_hls_mvd_coding(HEVCContext *s, int x0, int y0, int log2_cb_size);
603
604
extern const uint8_t ff_hevc_qpel_extra_before[4];
605
extern const uint8_t ff_hevc_qpel_extra_after[4];
606
extern const uint8_t ff_hevc_qpel_extra[4];
607
608
#endif /* AVCODEC_HEVCDEC_H */