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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 "hevcdsp.h"
40#include "internal.h"
41#include "thread.h"
42#include "videodsp.h"
43
44#define MAX_NB_THREADS 16
45#define SHIFT_CTB_WPP 2
46
47//TODO: check if this is really the maximum
48#define MAX_TRANSFORM_DEPTH 5
49
50#define MAX_TB_SIZE 32
51#define MAX_QP 51
52#define DEFAULT_INTRA_TC_OFFSET 2
53
54#define HEVC_CONTEXTS 199
55
56#define MRG_MAX_NUM_CANDS 5
57
58#define L0 0
59#define L1 1
60
61#define EPEL_EXTRA_BEFORE 1
62#define EPEL_EXTRA_AFTER 2
63#define EPEL_EXTRA 3
64#define QPEL_EXTRA_BEFORE 3
65#define QPEL_EXTRA_AFTER 4
66#define QPEL_EXTRA 7
67
68#define EDGE_EMU_BUFFER_STRIDE 80
69
70/**
71 * Value of the luma sample at position (x, y) in the 2D array tab.
72 */
73#define SAMPLE(tab, x, y) ((tab)[(y) * s->sps->width + (x)])
74#define SAMPLE_CTB(tab, x, y) ((tab)[(y) * min_cb_width + (x)])
75
76#define IS_IDR(s) ((s)->nal_unit_type == HEVC_NAL_IDR_W_RADL || (s)->nal_unit_type == HEVC_NAL_IDR_N_LP)
77#define IS_BLA(s) ((s)->nal_unit_type == HEVC_NAL_BLA_W_RADL || (s)->nal_unit_type == HEVC_NAL_BLA_W_LP || \
78 (s)->nal_unit_type == HEVC_NAL_BLA_N_LP)
79#define IS_IRAP(s) ((s)->nal_unit_type >= 16 && (s)->nal_unit_type <= 23)
80
81enum RPSType {
82 ST_CURR_BEF = 0,
83 ST_CURR_AFT,
84 ST_FOLL,
85 LT_CURR,
86 LT_FOLL,
87 NB_RPS_TYPE,
88};
89
90enum SyntaxElement {
91 SAO_MERGE_FLAG = 0,
92 SAO_TYPE_IDX,
93 SAO_EO_CLASS,
94 SAO_BAND_POSITION,
95 SAO_OFFSET_ABS,
96 SAO_OFFSET_SIGN,
97 END_OF_SLICE_FLAG,
98 SPLIT_CODING_UNIT_FLAG,
99 CU_TRANSQUANT_BYPASS_FLAG,
100 SKIP_FLAG,
101 CU_QP_DELTA,
102 PRED_MODE_FLAG,
103 PART_MODE,
104 PCM_FLAG,
105 PREV_INTRA_LUMA_PRED_FLAG,
106 MPM_IDX,
107 REM_INTRA_LUMA_PRED_MODE,
108 INTRA_CHROMA_PRED_MODE,
109 MERGE_FLAG,
110 MERGE_IDX,
111 INTER_PRED_IDC,
112 REF_IDX_L0,
113 REF_IDX_L1,
114 ABS_MVD_GREATER0_FLAG,
115 ABS_MVD_GREATER1_FLAG,
116 ABS_MVD_MINUS2,
117 MVD_SIGN_FLAG,
118 MVP_LX_FLAG,
119 NO_RESIDUAL_DATA_FLAG,
120 SPLIT_TRANSFORM_FLAG,
121 CBF_LUMA,
122 CBF_CB_CR,
123 TRANSFORM_SKIP_FLAG,
124 EXPLICIT_RDPCM_FLAG,
125 EXPLICIT_RDPCM_DIR_FLAG,
126 LAST_SIGNIFICANT_COEFF_X_PREFIX,
127 LAST_SIGNIFICANT_COEFF_Y_PREFIX,
128 LAST_SIGNIFICANT_COEFF_X_SUFFIX,
129 LAST_SIGNIFICANT_COEFF_Y_SUFFIX,
130 SIGNIFICANT_COEFF_GROUP_FLAG,
131 SIGNIFICANT_COEFF_FLAG,
132 COEFF_ABS_LEVEL_GREATER1_FLAG,
133 COEFF_ABS_LEVEL_GREATER2_FLAG,
134 COEFF_ABS_LEVEL_REMAINING,
135 COEFF_SIGN_FLAG,
136 LOG2_RES_SCALE_ABS,
137 RES_SCALE_SIGN_FLAG,
138 CU_CHROMA_QP_OFFSET_FLAG,
139 CU_CHROMA_QP_OFFSET_IDX,
140};
141
142enum PartMode {
143 PART_2Nx2N = 0,
144 PART_2NxN = 1,
145 PART_Nx2N = 2,
146 PART_NxN = 3,
147 PART_2NxnU = 4,
148 PART_2NxnD = 5,
149 PART_nLx2N = 6,
150 PART_nRx2N = 7,
151};
152
153enum PredMode {
154 MODE_INTER = 0,
155 MODE_INTRA,
156 MODE_SKIP,
157};
158
159enum InterPredIdc {
160 PRED_L0 = 0,
161 PRED_L1,
162 PRED_BI,
163};
164
165enum PredFlag {
166 PF_INTRA = 0,
167 PF_L0,
168 PF_L1,
169 PF_BI,
170};
171
172enum IntraPredMode {
173 INTRA_PLANAR = 0,
174 INTRA_DC,
175 INTRA_ANGULAR_2,
176 INTRA_ANGULAR_3,
177 INTRA_ANGULAR_4,
178 INTRA_ANGULAR_5,
179 INTRA_ANGULAR_6,
180 INTRA_ANGULAR_7,
181 INTRA_ANGULAR_8,
182 INTRA_ANGULAR_9,
183 INTRA_ANGULAR_10,
184 INTRA_ANGULAR_11,
185 INTRA_ANGULAR_12,
186 INTRA_ANGULAR_13,
187 INTRA_ANGULAR_14,
188 INTRA_ANGULAR_15,
189 INTRA_ANGULAR_16,
190 INTRA_ANGULAR_17,
191 INTRA_ANGULAR_18,
192 INTRA_ANGULAR_19,
193 INTRA_ANGULAR_20,
194 INTRA_ANGULAR_21,
195 INTRA_ANGULAR_22,
196 INTRA_ANGULAR_23,
197 INTRA_ANGULAR_24,
198 INTRA_ANGULAR_25,
199 INTRA_ANGULAR_26,
200 INTRA_ANGULAR_27,
201 INTRA_ANGULAR_28,
202 INTRA_ANGULAR_29,
203 INTRA_ANGULAR_30,
204 INTRA_ANGULAR_31,
205 INTRA_ANGULAR_32,
206 INTRA_ANGULAR_33,
207 INTRA_ANGULAR_34,
208};
209
210enum SAOType {
211 SAO_NOT_APPLIED = 0,
212 SAO_BAND,
213 SAO_EDGE,
214 SAO_APPLIED
215};
216
217enum SAOEOClass {
218 SAO_EO_HORIZ = 0,
219 SAO_EO_VERT,
220 SAO_EO_135D,
221 SAO_EO_45D,
222};
223
224enum ScanType {
225 SCAN_DIAG = 0,
226 SCAN_HORIZ,
227 SCAN_VERT,
228};
229
230typedef struct LongTermRPS {
231 int poc[32];
232 uint8_t used[32];
233 uint8_t nb_refs;
234} LongTermRPS;
235
236typedef struct RefPicList {
237 struct HEVCFrame *ref[HEVC_MAX_REFS];
238 int list[HEVC_MAX_REFS];
239 int isLongTerm[HEVC_MAX_REFS];
240 int nb_refs;
241} RefPicList;
242
243typedef struct RefPicListTab {
244 RefPicList refPicList[2];
245} RefPicListTab;
246
247typedef struct SliceHeader {
248 unsigned int pps_id;
249
250 ///< address (in raster order) of the first block in the current slice segment
251 unsigned int slice_segment_addr;
252 ///< address (in raster order) of the first block in the current slice
253 unsigned int slice_addr;
254
255 enum HEVCSliceType slice_type;
256
257 int pic_order_cnt_lsb;
258
259 uint8_t first_slice_in_pic_flag;
260 uint8_t dependent_slice_segment_flag;
261 uint8_t pic_output_flag;
262 uint8_t colour_plane_id;
263
264 ///< RPS coded in the slice header itself is stored here
265 int short_term_ref_pic_set_sps_flag;
266 int short_term_ref_pic_set_size;
267 ShortTermRPS slice_rps;
268 const ShortTermRPS *short_term_rps;
269 int long_term_ref_pic_set_size;
270 LongTermRPS long_term_rps;
271 unsigned int list_entry_lx[2][32];
272
273 uint8_t rpl_modification_flag[2];
274 uint8_t no_output_of_prior_pics_flag;
275 uint8_t slice_temporal_mvp_enabled_flag;
276
277 unsigned int nb_refs[2];
278
279 uint8_t slice_sample_adaptive_offset_flag[3];
280 uint8_t mvd_l1_zero_flag;
281
282 uint8_t cabac_init_flag;
283 uint8_t disable_deblocking_filter_flag; ///< slice_header_disable_deblocking_filter_flag
284 uint8_t slice_loop_filter_across_slices_enabled_flag;
285 uint8_t collocated_list;
286
287 unsigned int collocated_ref_idx;
288
289 int slice_qp_delta;
290 int slice_cb_qp_offset;
291 int slice_cr_qp_offset;
292
293 uint8_t cu_chroma_qp_offset_enabled_flag;
294
295 int beta_offset; ///< beta_offset_div2 * 2
296 int tc_offset; ///< tc_offset_div2 * 2
297
298 unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand
299
300 unsigned *entry_point_offset;
301 int * offset;
302 int * size;
303 int num_entry_point_offsets;
304
305 int8_t slice_qp;
306
307 uint8_t luma_log2_weight_denom;
308 int16_t chroma_log2_weight_denom;
309
310 int16_t luma_weight_l0[16];
311 int16_t chroma_weight_l0[16][2];
312 int16_t chroma_weight_l1[16][2];
313 int16_t luma_weight_l1[16];
314
315 int16_t luma_offset_l0[16];
316 int16_t chroma_offset_l0[16][2];
317
318 int16_t luma_offset_l1[16];
319 int16_t chroma_offset_l1[16][2];
320
321 int slice_ctb_addr_rs;
322} SliceHeader;
323
324typedef struct CodingUnit {
325 int x;
326 int y;
327
328 enum PredMode pred_mode; ///< PredMode
329 enum PartMode part_mode; ///< PartMode
330
331 // Inferred parameters
332 uint8_t intra_split_flag; ///< IntraSplitFlag
333 uint8_t max_trafo_depth; ///< MaxTrafoDepth
334 uint8_t cu_transquant_bypass_flag;
335} CodingUnit;
336
337typedef struct Mv {
338 int16_t x; ///< horizontal component of motion vector
339 int16_t y; ///< vertical component of motion vector
340} Mv;
341
342typedef struct MvField {
343 DECLARE_ALIGNED(4, Mv, mv)[2];
344 int8_t ref_idx[2];
345 int8_t pred_flag;
346} MvField;
347
348typedef struct NeighbourAvailable {
349 int cand_bottom_left;
350 int cand_left;
351 int cand_up;
352 int cand_up_left;
353 int cand_up_right;
354 int cand_up_right_sap;
355} NeighbourAvailable;
356
357typedef struct PredictionUnit {
358 int mpm_idx;
359 int rem_intra_luma_pred_mode;
360 uint8_t intra_pred_mode[4];
361 Mv mvd;
362 uint8_t merge_flag;
363 uint8_t intra_pred_mode_c[4];
364 uint8_t chroma_mode_c[4];
365} PredictionUnit;
366
367typedef struct TransformUnit {
368 int cu_qp_delta;
369
370 int res_scale_val;
371
372 // Inferred parameters;
373 int intra_pred_mode;
374 int intra_pred_mode_c;
375 int chroma_mode_c;
376 uint8_t is_cu_qp_delta_coded;
377 uint8_t is_cu_chroma_qp_offset_coded;
378 int8_t cu_qp_offset_cb;
379 int8_t cu_qp_offset_cr;
380 uint8_t cross_pf;
381} TransformUnit;
382
383typedef struct DBParams {
384 int beta_offset;
385 int tc_offset;
386} DBParams;
387
388#define HEVC_FRAME_FLAG_OUTPUT (1 << 0)
389#define HEVC_FRAME_FLAG_SHORT_REF (1 << 1)
390#define HEVC_FRAME_FLAG_LONG_REF (1 << 2)
391#define HEVC_FRAME_FLAG_BUMPING (1 << 3)
392
393typedef struct HEVCFrame {
394 AVFrame *frame;
395 ThreadFrame tf;
396 MvField *tab_mvf;
397 RefPicList *refPicList;
398 RefPicListTab **rpl_tab;
399 int ctb_count;
400 int poc;
401 struct HEVCFrame *collocated_ref;
402
403 HEVCWindow window;
404
405 AVBufferRef *tab_mvf_buf;
406 AVBufferRef *rpl_tab_buf;
407 AVBufferRef *rpl_buf;
408
409 AVBufferRef *hwaccel_priv_buf;
410 void *hwaccel_picture_private;
411
412 /**
413 * A sequence counter, so that old frames are output first
414 * after a POC reset
415 */
416 uint16_t sequence;
417
418 /**
419 * A combination of HEVC_FRAME_FLAG_*
420 */
421 uint8_t flags;
422} HEVCFrame;
423
424typedef struct HEVCLocalContext {
425 uint8_t cabac_state[HEVC_CONTEXTS];
426
427 uint8_t stat_coeff[4];
428
429 uint8_t first_qp_group;
430
431 GetBitContext gb;
432 CABACContext cc;
433
434 int8_t qp_y;
435 int8_t curr_qp_y;
436
437 int qPy_pred;
438
439 TransformUnit tu;
440
441 uint8_t ctb_left_flag;
442 uint8_t ctb_up_flag;
443 uint8_t ctb_up_right_flag;
444 uint8_t ctb_up_left_flag;
445 int end_of_tiles_x;
446 int end_of_tiles_y;
447 /* +7 is for subpixel interpolation, *2 for high bit depths */
448 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
449 /* The extended size between the new edge emu buffer is abused by SAO */
450 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer2)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
451 DECLARE_ALIGNED(32, int16_t, tmp [MAX_PB_SIZE * MAX_PB_SIZE]);
452
453 int ct_depth;
454 CodingUnit cu;
455 PredictionUnit pu;
456 NeighbourAvailable na;
457
458#define BOUNDARY_LEFT_SLICE (1 << 0)
459#define BOUNDARY_LEFT_TILE (1 << 1)
460#define BOUNDARY_UPPER_SLICE (1 << 2)
461#define BOUNDARY_UPPER_TILE (1 << 3)
462 /* properties of the boundary of the current CTB for the purposes
463 * of the deblocking filter */
464 int boundary_flags;
465} HEVCLocalContext;
466
467typedef struct HEVCContext {
468 const AVClass *c; // needed by private avoptions
469 AVCodecContext *avctx;
470
471 struct HEVCContext *sList[MAX_NB_THREADS];
472
473 HEVCLocalContext *HEVClcList[MAX_NB_THREADS];
474 HEVCLocalContext *HEVClc;
475
476 uint8_t threads_type;
477 uint8_t threads_number;
478
479 int width;
480 int height;
481
482 uint8_t *cabac_state;
483
484 /** 1 if the independent slice segment header was successfully parsed */
485 uint8_t slice_initialized;
486
487 AVFrame *frame;
488 AVFrame *output_frame;
489 uint8_t *sao_pixel_buffer_h[3];
490 uint8_t *sao_pixel_buffer_v[3];
491
492 HEVCParamSets ps;
493
494 AVBufferPool *tab_mvf_pool;
495 AVBufferPool *rpl_tab_pool;
496
497 ///< candidate references for the current frame
498 RefPicList rps[5];
499
500 SliceHeader sh;
501 SAOParams *sao;
502 DBParams *deblock;
503 enum HEVCNALUnitType nal_unit_type;
504 int temporal_id; ///< temporal_id_plus1 - 1
505 HEVCFrame *ref;
506 HEVCFrame DPB[32];
507 int poc;
508 int pocTid0;
509 int slice_idx; ///< number of the slice being currently decoded
510 int eos; ///< current packet contains an EOS/EOB NAL
511 int last_eos; ///< last packet contains an EOS/EOB NAL
512 int max_ra;
513 int bs_width;
514 int bs_height;
515
516 int is_decoded;
517 int no_rasl_output_flag;
518
519 HEVCPredContext hpc;
520 HEVCDSPContext hevcdsp;
521 VideoDSPContext vdsp;
522 BswapDSPContext bdsp;
523 int8_t *qp_y_tab;
524 uint8_t *horizontal_bs;
525 uint8_t *vertical_bs;
526
527 int32_t *tab_slice_address;
528
529 // CU
530 uint8_t *skip_flag;
531 uint8_t *tab_ct_depth;
532 // PU
533 uint8_t *tab_ipm;
534
535 uint8_t *cbf_luma; // cbf_luma of colocated TU
536 uint8_t *is_pcm;
537
538 // CTB-level flags affecting loop filter operation
539 uint8_t *filter_slice_edges;
540
541 /** used on BE to byteswap the lines for checksumming */
542 uint8_t *checksum_buf;
543 int checksum_buf_size;
544
545 /**
546 * Sequence counters for decoded and output frames, so that old
547 * frames are output first after a POC reset
548 */
549 uint16_t seq_decode;
550 uint16_t seq_output;
551
552 int enable_parallel_tiles;
553 atomic_int wpp_err;
554
555 const uint8_t *data;
556
557 H2645Packet pkt;
558 // type of the first VCL NAL of the current frame
559 enum HEVCNALUnitType first_nal_type;
560
561 // for checking the frame checksums
562 struct AVMD5 *md5_ctx;
563 uint8_t md5[3][16];
564 uint8_t is_md5;
565
566 uint8_t context_initialized;
567 uint8_t is_nalff; ///< this flag is != 0 if bitstream is encapsulated
568 ///< as a format defined in 14496-15
569 int apply_defdispwin;
570
571 int active_seq_parameter_set_id;
572
573 int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
574 int nuh_layer_id;
575
576 /** frame packing arrangement variables */
577 int sei_frame_packing_present;
578 int frame_packing_arrangement_type;
579 int content_interpretation_type;
580 int quincunx_subsampling;
581
582 /** display orientation */
583 int sei_display_orientation_present;
584 int sei_anticlockwise_rotation;
585 int sei_hflip, sei_vflip;
586
587 int picture_struct;
588
589 uint8_t* a53_caption;
590 int a53_caption_size;
591
592 /** mastering display */
593 int sei_mastering_display_info_present;
594 uint16_t display_primaries[3][2];
595 uint16_t white_point[2];
596 uint32_t max_mastering_luminance;
597 uint32_t min_mastering_luminance;
598
599} HEVCContext;
600
601int ff_hevc_decode_nal_sei(HEVCContext *s);
602
603/**
604 * Mark all frames in DPB as unused for reference.
605 */
606void ff_hevc_clear_refs(HEVCContext *s);
607
608/**
609 * Drop all frames currently in DPB.
610 */
611void ff_hevc_flush_dpb(HEVCContext *s);
612
613/**
614 * Compute POC of the current frame and return it.
615 */
616int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb);
617
618RefPicList *ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *frame,
619 int x0, int y0);
620
621/**
622 * Construct the reference picture sets for the current frame.
623 */
624int ff_hevc_frame_rps(HEVCContext *s);
625
626/**
627 * Construct the reference picture list(s) for the current slice.
628 */
629int ff_hevc_slice_rpl(HEVCContext *s);
630
631void ff_hevc_save_states(HEVCContext *s, int ctb_addr_ts);
632void ff_hevc_cabac_init(HEVCContext *s, int ctb_addr_ts);
633int ff_hevc_sao_merge_flag_decode(HEVCContext *s);
634int ff_hevc_sao_type_idx_decode(HEVCContext *s);
635int ff_hevc_sao_band_position_decode(HEVCContext *s);
636int ff_hevc_sao_offset_abs_decode(HEVCContext *s);
637int ff_hevc_sao_offset_sign_decode(HEVCContext *s);
638int ff_hevc_sao_eo_class_decode(HEVCContext *s);
639int ff_hevc_end_of_slice_flag_decode(HEVCContext *s);
640int ff_hevc_cu_transquant_bypass_flag_decode(HEVCContext *s);
641int ff_hevc_skip_flag_decode(HEVCContext *s, int x0, int y0,
642 int x_cb, int y_cb);
643int ff_hevc_pred_mode_decode(HEVCContext *s);
644int ff_hevc_split_coding_unit_flag_decode(HEVCContext *s, int ct_depth,
645 int x0, int y0);
646int ff_hevc_part_mode_decode(HEVCContext *s, int log2_cb_size);
647int ff_hevc_pcm_flag_decode(HEVCContext *s);
648int ff_hevc_prev_intra_luma_pred_flag_decode(HEVCContext *s);
649int ff_hevc_mpm_idx_decode(HEVCContext *s);
650int ff_hevc_rem_intra_luma_pred_mode_decode(HEVCContext *s);
651int ff_hevc_intra_chroma_pred_mode_decode(HEVCContext *s);
652int ff_hevc_merge_idx_decode(HEVCContext *s);
653int ff_hevc_merge_flag_decode(HEVCContext *s);
654int ff_hevc_inter_pred_idc_decode(HEVCContext *s, int nPbW, int nPbH);
655int ff_hevc_ref_idx_lx_decode(HEVCContext *s, int num_ref_idx_lx);
656int ff_hevc_mvp_lx_flag_decode(HEVCContext *s);
657int ff_hevc_no_residual_syntax_flag_decode(HEVCContext *s);
658int ff_hevc_split_transform_flag_decode(HEVCContext *s, int log2_trafo_size);
659int ff_hevc_cbf_cb_cr_decode(HEVCContext *s, int trafo_depth);
660int ff_hevc_cbf_luma_decode(HEVCContext *s, int trafo_depth);
661int ff_hevc_log2_res_scale_abs(HEVCContext *s, int idx);
662int ff_hevc_res_scale_sign_flag(HEVCContext *s, int idx);
663
664/**
665 * Get the number of candidate references for the current frame.
666 */
667int ff_hevc_frame_nb_refs(HEVCContext *s);
668
669int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc);
670
671/**
672 * Find next frame in output order and put a reference to it in frame.
673 * @return 1 if a frame was output, 0 otherwise
674 */
675int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush);
676
677void ff_hevc_bump_frame(HEVCContext *s);
678
679void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags);
680
681void ff_hevc_set_neighbour_available(HEVCContext *s, int x0, int y0,
682 int nPbW, int nPbH);
683void ff_hevc_luma_mv_merge_mode(HEVCContext *s, int x0, int y0,
684 int nPbW, int nPbH, int log2_cb_size,
685 int part_idx, int merge_idx, MvField *mv);
686void ff_hevc_luma_mv_mvp_mode(HEVCContext *s, int x0, int y0,
687 int nPbW, int nPbH, int log2_cb_size,
688 int part_idx, int merge_idx,
689 MvField *mv, int mvp_lx_flag, int LX);
690void ff_hevc_set_qPy(HEVCContext *s, int xBase, int yBase,
691 int log2_cb_size);
692void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0,
693 int log2_trafo_size);
694int ff_hevc_cu_qp_delta_sign_flag(HEVCContext *s);
695int ff_hevc_cu_qp_delta_abs(HEVCContext *s);
696int ff_hevc_cu_chroma_qp_offset_flag(HEVCContext *s);
697int ff_hevc_cu_chroma_qp_offset_idx(HEVCContext *s);
698void ff_hevc_hls_filter(HEVCContext *s, int x, int y, int ctb_size);
699void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size);
700void ff_hevc_hls_residual_coding(HEVCContext *s, int x0, int y0,
701 int log2_trafo_size, enum ScanType scan_idx,
702 int c_idx);
703
704void ff_hevc_hls_mvd_coding(HEVCContext *s, int x0, int y0, int log2_cb_size);
705
706/**
707 * Reset SEI values that are stored on the Context.
708 * e.g. Caption data that was extracted during NAL
709 * parsing.
710 *
711 * @param s HEVCContext.
712 */
713void ff_hevc_reset_sei(HEVCContext *s);
714
715extern const uint8_t ff_hevc_qpel_extra_before[4];
716extern const uint8_t ff_hevc_qpel_extra_after[4];
717extern const uint8_t ff_hevc_qpel_extra[4];
718
719#endif /* AVCODEC_HEVCDEC_H */
720
generated by cgit at 2024-05-17 06:32:25 (GMT)