hevc: refactor Profile Tier Level
[libav.git] / libavcodec / hevc.h
1 /*
2 * HEVC video decoder
3 *
4 * Copyright (C) 2012 - 2013 Guillaume Martres
5 *
6 * This file is part of Libav.
7 *
8 * Libav 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 * Libav 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 Libav; 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_HEVC_H
24 #define AVCODEC_HEVC_H
25
26 #include <stddef.h>
27 #include <stdint.h>
28
29 #include "libavutil/buffer.h"
30 #include "libavutil/md5.h"
31
32 #include "avcodec.h"
33 #include "cabac.h"
34 #include "dsputil.h"
35 #include "get_bits.h"
36 #include "internal.h"
37 #include "thread.h"
38 #include "videodsp.h"
39
40 #define MAX_DPB_SIZE 16 // A.4.1
41 #define MAX_REFS 16
42
43 /**
44 * 7.4.2.1
45 */
46 #define MAX_SUB_LAYERS 7
47 #define MAX_VPS_COUNT 16
48 #define MAX_SPS_COUNT 32
49 #define MAX_PPS_COUNT 256
50 #define MAX_SHORT_TERM_RPS_COUNT 64
51 #define MAX_CU_SIZE 128
52
53 //TODO: check if this is really the maximum
54 #define MAX_TRANSFORM_DEPTH 5
55
56 #define MAX_TB_SIZE 32
57 #define MAX_PB_SIZE 64
58 #define MAX_LOG2_CTB_SIZE 6
59 #define MAX_QP 51
60 #define DEFAULT_INTRA_TC_OFFSET 2
61
62 #define HEVC_CONTEXTS 183
63
64 #define MRG_MAX_NUM_CANDS 5
65
66 #define L0 0
67 #define L1 1
68
69 #define EPEL_EXTRA_BEFORE 1
70 #define EPEL_EXTRA_AFTER 2
71 #define EPEL_EXTRA 3
72
73 /**
74 * Value of the luma sample at position (x, y) in the 2D array tab.
75 */
76 #define SAMPLE(tab, x, y) ((tab)[(y) * s->sps->width + (x)])
77 #define SAMPLE_CTB(tab, x, y) ((tab)[(y) * min_cb_width + (x)])
78 #define SAMPLE_CBF(tab, x, y) ((tab)[((y) & ((1<<log2_trafo_size)-1)) * MAX_CU_SIZE + ((x) & ((1<<log2_trafo_size)-1))])
79
80 #define IS_IDR(s) (s->nal_unit_type == NAL_IDR_W_RADL || s->nal_unit_type == NAL_IDR_N_LP)
81 #define IS_BLA(s) (s->nal_unit_type == NAL_BLA_W_RADL || s->nal_unit_type == NAL_BLA_W_LP || \
82 s->nal_unit_type == NAL_BLA_N_LP)
83 #define IS_IRAP(s) (s->nal_unit_type >= 16 && s->nal_unit_type <= 23)
84
85 /**
86 * Table 7-3: NAL unit type codes
87 */
88 enum NALUnitType {
89 NAL_TRAIL_N = 0,
90 NAL_TRAIL_R = 1,
91 NAL_TSA_N = 2,
92 NAL_TSA_R = 3,
93 NAL_STSA_N = 4,
94 NAL_STSA_R = 5,
95 NAL_RADL_N = 6,
96 NAL_RADL_R = 7,
97 NAL_RASL_N = 8,
98 NAL_RASL_R = 9,
99 NAL_BLA_W_LP = 16,
100 NAL_BLA_W_RADL = 17,
101 NAL_BLA_N_LP = 18,
102 NAL_IDR_W_RADL = 19,
103 NAL_IDR_N_LP = 20,
104 NAL_CRA_NUT = 21,
105 NAL_VPS = 32,
106 NAL_SPS = 33,
107 NAL_PPS = 34,
108 NAL_AUD = 35,
109 NAL_EOS_NUT = 36,
110 NAL_EOB_NUT = 37,
111 NAL_FD_NUT = 38,
112 NAL_SEI_PREFIX = 39,
113 NAL_SEI_SUFFIX = 40,
114 };
115
116 enum RPSType {
117 ST_CURR_BEF = 0,
118 ST_CURR_AFT,
119 ST_FOLL,
120 LT_CURR,
121 LT_FOLL,
122 NB_RPS_TYPE,
123 };
124
125 enum SliceType {
126 B_SLICE = 0,
127 P_SLICE = 1,
128 I_SLICE = 2,
129 };
130
131 enum SyntaxElement {
132 SAO_MERGE_FLAG = 0,
133 SAO_TYPE_IDX,
134 SAO_EO_CLASS,
135 SAO_BAND_POSITION,
136 SAO_OFFSET_ABS,
137 SAO_OFFSET_SIGN,
138 END_OF_SLICE_FLAG,
139 SPLIT_CODING_UNIT_FLAG,
140 CU_TRANSQUANT_BYPASS_FLAG,
141 SKIP_FLAG,
142 CU_QP_DELTA,
143 PRED_MODE_FLAG,
144 PART_MODE,
145 PCM_FLAG,
146 PREV_INTRA_LUMA_PRED_FLAG,
147 MPM_IDX,
148 REM_INTRA_LUMA_PRED_MODE,
149 INTRA_CHROMA_PRED_MODE,
150 MERGE_FLAG,
151 MERGE_IDX,
152 INTER_PRED_IDC,
153 REF_IDX_L0,
154 REF_IDX_L1,
155 ABS_MVD_GREATER0_FLAG,
156 ABS_MVD_GREATER1_FLAG,
157 ABS_MVD_MINUS2,
158 MVD_SIGN_FLAG,
159 MVP_LX_FLAG,
160 NO_RESIDUAL_DATA_FLAG,
161 SPLIT_TRANSFORM_FLAG,
162 CBF_LUMA,
163 CBF_CB_CR,
164 TRANSFORM_SKIP_FLAG,
165 LAST_SIGNIFICANT_COEFF_X_PREFIX,
166 LAST_SIGNIFICANT_COEFF_Y_PREFIX,
167 LAST_SIGNIFICANT_COEFF_X_SUFFIX,
168 LAST_SIGNIFICANT_COEFF_Y_SUFFIX,
169 SIGNIFICANT_COEFF_GROUP_FLAG,
170 SIGNIFICANT_COEFF_FLAG,
171 COEFF_ABS_LEVEL_GREATER1_FLAG,
172 COEFF_ABS_LEVEL_GREATER2_FLAG,
173 COEFF_ABS_LEVEL_REMAINING,
174 COEFF_SIGN_FLAG,
175 };
176
177 enum PartMode {
178 PART_2Nx2N = 0,
179 PART_2NxN = 1,
180 PART_Nx2N = 2,
181 PART_NxN = 3,
182 PART_2NxnU = 4,
183 PART_2NxnD = 5,
184 PART_nLx2N = 6,
185 PART_nRx2N = 7,
186 };
187
188 enum PredMode {
189 MODE_INTER = 0,
190 MODE_INTRA,
191 MODE_SKIP,
192 };
193
194 enum InterPredIdc {
195 PRED_L0 = 0,
196 PRED_L1,
197 PRED_BI,
198 };
199
200 enum IntraPredMode {
201 INTRA_PLANAR = 0,
202 INTRA_DC,
203 INTRA_ANGULAR_2,
204 INTRA_ANGULAR_3,
205 INTRA_ANGULAR_4,
206 INTRA_ANGULAR_5,
207 INTRA_ANGULAR_6,
208 INTRA_ANGULAR_7,
209 INTRA_ANGULAR_8,
210 INTRA_ANGULAR_9,
211 INTRA_ANGULAR_10,
212 INTRA_ANGULAR_11,
213 INTRA_ANGULAR_12,
214 INTRA_ANGULAR_13,
215 INTRA_ANGULAR_14,
216 INTRA_ANGULAR_15,
217 INTRA_ANGULAR_16,
218 INTRA_ANGULAR_17,
219 INTRA_ANGULAR_18,
220 INTRA_ANGULAR_19,
221 INTRA_ANGULAR_20,
222 INTRA_ANGULAR_21,
223 INTRA_ANGULAR_22,
224 INTRA_ANGULAR_23,
225 INTRA_ANGULAR_24,
226 INTRA_ANGULAR_25,
227 INTRA_ANGULAR_26,
228 INTRA_ANGULAR_27,
229 INTRA_ANGULAR_28,
230 INTRA_ANGULAR_29,
231 INTRA_ANGULAR_30,
232 INTRA_ANGULAR_31,
233 INTRA_ANGULAR_32,
234 INTRA_ANGULAR_33,
235 INTRA_ANGULAR_34,
236 };
237
238 enum SAOType {
239 SAO_NOT_APPLIED = 0,
240 SAO_BAND,
241 SAO_EDGE,
242 };
243
244 enum SAOEOClass {
245 SAO_EO_HORIZ = 0,
246 SAO_EO_VERT,
247 SAO_EO_135D,
248 SAO_EO_45D,
249 };
250
251 enum ScanType {
252 SCAN_DIAG = 0,
253 SCAN_HORIZ,
254 SCAN_VERT,
255 };
256
257 typedef struct ShortTermRPS {
258 int num_negative_pics;
259 int num_delta_pocs;
260 int32_t delta_poc[32];
261 uint8_t used[32];
262 } ShortTermRPS;
263
264 typedef struct LongTermRPS {
265 int poc[32];
266 uint8_t used[32];
267 uint8_t nb_refs;
268 } LongTermRPS;
269
270 typedef struct RefPicList {
271 struct HEVCFrame *ref[MAX_REFS];
272 int list[MAX_REFS];
273 int isLongTerm[MAX_REFS];
274 int nb_refs;
275 } RefPicList;
276
277 typedef struct RefPicListTab {
278 RefPicList refPicList[2];
279 } RefPicListTab;
280
281 typedef struct HEVCWindow {
282 int left_offset;
283 int right_offset;
284 int top_offset;
285 int bottom_offset;
286 } HEVCWindow;
287
288 typedef struct VUI {
289 AVRational sar;
290
291 int overscan_info_present_flag;
292 int overscan_appropriate_flag;
293
294 int video_signal_type_present_flag;
295 int video_format;
296 int video_full_range_flag;
297 int colour_description_present_flag;
298 uint8_t colour_primaries;
299 uint8_t transfer_characteristic;
300 uint8_t matrix_coeffs;
301
302 int chroma_loc_info_present_flag;
303 int chroma_sample_loc_type_top_field;
304 int chroma_sample_loc_type_bottom_field;
305 int neutra_chroma_indication_flag;
306
307 int field_seq_flag;
308 int frame_field_info_present_flag;
309
310 int default_display_window_flag;
311 HEVCWindow def_disp_win;
312
313 int vui_timing_info_present_flag;
314 uint32_t vui_num_units_in_tick;
315 uint32_t vui_time_scale;
316 int vui_poc_proportional_to_timing_flag;
317 int vui_num_ticks_poc_diff_one_minus1;
318 int vui_hrd_parameters_present_flag;
319
320 int bitstream_restriction_flag;
321 int tiles_fixed_structure_flag;
322 int motion_vectors_over_pic_boundaries_flag;
323 int restricted_ref_pic_lists_flag;
324 int min_spatial_segmentation_idc;
325 int max_bytes_per_pic_denom;
326 int max_bits_per_min_cu_denom;
327 int log2_max_mv_length_horizontal;
328 int log2_max_mv_length_vertical;
329 } VUI;
330
331 typedef struct PTLCommon {
332 uint8_t profile_space;
333 uint8_t tier_flag;
334 uint8_t profile_idc;
335 uint8_t profile_compatibility_flag[32];
336 uint8_t level_idc;
337 uint8_t progressive_source_flag;
338 uint8_t interlaced_source_flag;
339 uint8_t non_packed_constraint_flag;
340 uint8_t frame_only_constraint_flag;
341 } PTLCommon;
342
343 typedef struct PTL {
344 PTLCommon general_ptl;
345 PTLCommon sub_layer_ptl[MAX_SUB_LAYERS];
346
347 uint8_t sub_layer_profile_present_flag[MAX_SUB_LAYERS];
348 uint8_t sub_layer_level_present_flag[MAX_SUB_LAYERS];
349 } PTL;
350
351 typedef struct HEVCVPS {
352 uint8_t vps_temporal_id_nesting_flag;
353 int vps_max_layers;
354 int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1
355
356 PTL ptl;
357 int vps_sub_layer_ordering_info_present_flag;
358 unsigned int vps_max_dec_pic_buffering[MAX_SUB_LAYERS];
359 unsigned int vps_num_reorder_pics[MAX_SUB_LAYERS];
360 unsigned int vps_max_latency_increase[MAX_SUB_LAYERS];
361 int vps_max_layer_id;
362 int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1
363 uint8_t vps_timing_info_present_flag;
364 uint32_t vps_num_units_in_tick;
365 uint32_t vps_time_scale;
366 uint8_t vps_poc_proportional_to_timing_flag;
367 int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1
368 int vps_num_hrd_parameters;
369 } HEVCVPS;
370
371 typedef struct ScalingList {
372 /* This is a little wasteful, since sizeID 0 only needs 8 coeffs,
373 * and size ID 3 only has 2 arrays, not 6. */
374 uint8_t sl[4][6][64];
375 uint8_t sl_dc[2][6];
376 } ScalingList;
377
378 typedef struct HEVCSPS {
379 int vps_id;
380 int chroma_format_idc;
381 uint8_t separate_colour_plane_flag;
382
383 ///< output (i.e. cropped) values
384 int output_width, output_height;
385 HEVCWindow output_window;
386
387 HEVCWindow pic_conf_win;
388
389 int bit_depth;
390 int pixel_shift;
391 enum AVPixelFormat pix_fmt;
392
393 unsigned int log2_max_poc_lsb;
394 int pcm_enabled_flag;
395
396 int max_sub_layers;
397 struct {
398 int max_dec_pic_buffering;
399 int num_reorder_pics;
400 int max_latency_increase;
401 } temporal_layer[MAX_SUB_LAYERS];
402
403 VUI vui;
404 PTL ptl;
405
406 uint8_t scaling_list_enable_flag;
407 ScalingList scaling_list;
408
409 unsigned int nb_st_rps;
410 ShortTermRPS st_rps[MAX_SHORT_TERM_RPS_COUNT];
411
412 uint8_t amp_enabled_flag;
413 uint8_t sao_enabled;
414
415 uint8_t long_term_ref_pics_present_flag;
416 uint16_t lt_ref_pic_poc_lsb_sps[32];
417 uint8_t used_by_curr_pic_lt_sps_flag[32];
418 uint8_t num_long_term_ref_pics_sps;
419
420 struct {
421 uint8_t bit_depth;
422 unsigned int log2_min_pcm_cb_size;
423 unsigned int log2_max_pcm_cb_size;
424 uint8_t loop_filter_disable_flag;
425 } pcm;
426 uint8_t sps_temporal_mvp_enabled_flag;
427 uint8_t sps_strong_intra_smoothing_enable_flag;
428
429 unsigned int log2_min_cb_size;
430 unsigned int log2_diff_max_min_coding_block_size;
431 unsigned int log2_min_tb_size;
432 unsigned int log2_max_trafo_size;
433 unsigned int log2_ctb_size;
434 unsigned int log2_min_pu_size;
435
436 int max_transform_hierarchy_depth_inter;
437 int max_transform_hierarchy_depth_intra;
438
439 ///< coded frame dimension in various units
440 int width;
441 int height;
442 int ctb_width;
443 int ctb_height;
444 int ctb_size;
445 int min_cb_width;
446 int min_cb_height;
447 int min_tb_width;
448 int min_tb_height;
449 int min_pu_width;
450 int min_pu_height;
451
452 int hshift[3];
453 int vshift[3];
454
455 int qp_bd_offset;
456 } HEVCSPS;
457
458 typedef struct HEVCPPS {
459 int sps_id; ///< seq_parameter_set_id
460
461 uint8_t sign_data_hiding_flag;
462
463 uint8_t cabac_init_present_flag;
464
465 int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1
466 int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1
467 int pic_init_qp_minus26;
468
469 uint8_t constrained_intra_pred_flag;
470 uint8_t transform_skip_enabled_flag;
471
472 uint8_t cu_qp_delta_enabled_flag;
473 int diff_cu_qp_delta_depth;
474
475 int cb_qp_offset;
476 int cr_qp_offset;
477 uint8_t pic_slice_level_chroma_qp_offsets_present_flag;
478 uint8_t weighted_pred_flag;
479 uint8_t weighted_bipred_flag;
480 uint8_t output_flag_present_flag;
481 uint8_t transquant_bypass_enable_flag;
482
483 uint8_t dependent_slice_segments_enabled_flag;
484 uint8_t tiles_enabled_flag;
485 uint8_t entropy_coding_sync_enabled_flag;
486
487 int num_tile_columns; ///< num_tile_columns_minus1 + 1
488 int num_tile_rows; ///< num_tile_rows_minus1 + 1
489 uint8_t uniform_spacing_flag;
490 uint8_t loop_filter_across_tiles_enabled_flag;
491
492 uint8_t seq_loop_filter_across_slices_enabled_flag;
493
494 uint8_t deblocking_filter_control_present_flag;
495 uint8_t deblocking_filter_override_enabled_flag;
496 uint8_t disable_dbf;
497 int beta_offset; ///< beta_offset_div2 * 2
498 int tc_offset; ///< tc_offset_div2 * 2
499
500 uint8_t scaling_list_data_present_flag;
501 ScalingList scaling_list;
502
503 uint8_t lists_modification_present_flag;
504 int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2
505 int num_extra_slice_header_bits;
506 uint8_t slice_header_extension_present_flag;
507
508 // Inferred parameters
509 int *column_width; ///< ColumnWidth
510 int *row_height; ///< RowHeight
511 int *col_bd; ///< ColBd
512 int *row_bd; ///< RowBd
513 int *col_idxX;
514
515 int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS
516 int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS
517 int *tile_id; ///< TileId
518 int *tile_pos_rs; ///< TilePosRS
519 int *min_cb_addr_zs; ///< MinCbAddrZS
520 int *min_tb_addr_zs; ///< MinTbAddrZS
521 } HEVCPPS;
522
523 typedef struct SliceHeader {
524 int pps_id;
525
526 ///< address (in raster order) of the first block in the current slice segment
527 unsigned int slice_segment_addr;
528 ///< address (in raster order) of the first block in the current slice
529 unsigned int slice_addr;
530
531 enum SliceType slice_type;
532
533 int pic_order_cnt_lsb;
534
535 uint8_t first_slice_in_pic_flag;
536 uint8_t dependent_slice_segment_flag;
537 uint8_t pic_output_flag;
538 uint8_t colour_plane_id;
539
540 ///< RPS coded in the slice header itself is stored here
541 ShortTermRPS slice_rps;
542 const ShortTermRPS *short_term_rps;
543 LongTermRPS long_term_rps;
544 unsigned int list_entry_lx[2][32];
545
546 uint8_t rpl_modification_flag[2];
547 uint8_t no_output_of_prior_pics_flag;
548 uint8_t slice_temporal_mvp_enabled_flag;
549
550 unsigned int nb_refs[2];
551
552 uint8_t slice_sample_adaptive_offset_flag[3];
553 uint8_t mvd_l1_zero_flag;
554
555 uint8_t cabac_init_flag;
556 uint8_t disable_deblocking_filter_flag; ///< slice_header_disable_deblocking_filter_flag
557 uint8_t slice_loop_filter_across_slices_enabled_flag;
558 uint8_t collocated_list;
559
560 unsigned int collocated_ref_idx;
561
562 int slice_qp_delta;
563 int slice_cb_qp_offset;
564 int slice_cr_qp_offset;
565
566 int beta_offset; ///< beta_offset_div2 * 2
567 int tc_offset; ///< tc_offset_div2 * 2
568
569 unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand
570
571 int num_entry_point_offsets;
572
573 int8_t slice_qp;
574
575 uint8_t luma_log2_weight_denom;
576 int16_t chroma_log2_weight_denom;
577
578 int16_t luma_weight_l0[16];
579 int16_t chroma_weight_l0[16][2];
580 int16_t chroma_weight_l1[16][2];
581 int16_t luma_weight_l1[16];
582
583 int16_t luma_offset_l0[16];
584 int16_t chroma_offset_l0[16][2];
585
586 int16_t luma_offset_l1[16];
587 int16_t chroma_offset_l1[16][2];
588
589 int slice_ctb_addr_rs;
590 } SliceHeader;
591
592 typedef struct CodingTree {
593 int depth; ///< ctDepth
594 } CodingTree;
595
596 typedef struct CodingUnit {
597 int x;
598 int y;
599
600 enum PredMode pred_mode; ///< PredMode
601 enum PartMode part_mode; ///< PartMode
602
603 uint8_t rqt_root_cbf;
604
605 uint8_t pcm_flag;
606
607 // Inferred parameters
608 uint8_t intra_split_flag; ///< IntraSplitFlag
609 uint8_t max_trafo_depth; ///< MaxTrafoDepth
610 uint8_t cu_transquant_bypass_flag;
611 } CodingUnit;
612
613 typedef struct Mv {
614 int16_t x; ///< horizontal component of motion vector
615 int16_t y; ///< vertical component of motion vector
616 } Mv;
617
618 typedef struct MvField {
619 Mv mv[2];
620 int8_t ref_idx[2];
621 int8_t pred_flag[2];
622 uint8_t is_intra;
623 } MvField;
624
625 typedef struct NeighbourAvailable {
626 int cand_bottom_left;
627 int cand_left;
628 int cand_up;
629 int cand_up_left;
630 int cand_up_right;
631 int cand_up_right_sap;
632 } NeighbourAvailable;
633
634 typedef struct PredictionUnit {
635 int mpm_idx;
636 int rem_intra_luma_pred_mode;
637 uint8_t intra_pred_mode[4];
638 Mv mvd;
639 uint8_t merge_flag;
640 uint8_t intra_pred_mode_c;
641 } PredictionUnit;
642
643 typedef struct TransformTree {
644 uint8_t cbf_cb[MAX_TRANSFORM_DEPTH][MAX_CU_SIZE * MAX_CU_SIZE];
645 uint8_t cbf_cr[MAX_TRANSFORM_DEPTH][MAX_CU_SIZE * MAX_CU_SIZE];
646 uint8_t cbf_luma;
647
648 // Inferred parameters
649 uint8_t inter_split_flag;
650 } TransformTree;
651
652 typedef struct TransformUnit {
653 int cu_qp_delta;
654
655 // Inferred parameters;
656 int cur_intra_pred_mode;
657 uint8_t is_cu_qp_delta_coded;
658 } TransformUnit;
659
660 typedef struct SAOParams {
661 int offset_abs[3][4]; ///< sao_offset_abs
662 int offset_sign[3][4]; ///< sao_offset_sign
663
664 int band_position[3]; ///< sao_band_position
665
666 int eo_class[3]; ///< sao_eo_class
667
668 int offset_val[3][5]; ///<SaoOffsetVal
669
670 uint8_t type_idx[3]; ///< sao_type_idx
671 } SAOParams;
672
673 typedef struct DBParams {
674 int beta_offset;
675 int tc_offset;
676 } DBParams;
677
678 #define HEVC_FRAME_FLAG_OUTPUT (1 << 0)
679 #define HEVC_FRAME_FLAG_SHORT_REF (1 << 1)
680 #define HEVC_FRAME_FLAG_LONG_REF (1 << 2)
681
682 typedef struct HEVCFrame {
683 AVFrame *frame;
684 ThreadFrame tf;
685 MvField *tab_mvf;
686 RefPicList *refPicList;
687 RefPicListTab **rpl_tab;
688 int ctb_count;
689 int poc;
690 struct HEVCFrame *collocated_ref;
691
692 HEVCWindow window;
693
694 AVBufferRef *tab_mvf_buf;
695 AVBufferRef *rpl_tab_buf;
696 AVBufferRef *rpl_buf;
697
698 /**
699 * A sequence counter, so that old frames are output first
700 * after a POC reset
701 */
702 uint16_t sequence;
703
704 /**
705 * A combination of HEVC_FRAME_FLAG_*
706 */
707 uint8_t flags;
708 } HEVCFrame;
709
710 typedef struct HEVCNAL {
711 uint8_t *rbsp_buffer;
712 int rbsp_buffer_size;
713
714 int size;
715 const uint8_t *data;
716 } HEVCNAL;
717
718 typedef struct HEVCDSPContext {
719 void (*put_pcm)(uint8_t *dst, ptrdiff_t stride, int size,
720 GetBitContext *gb, int pcm_bit_depth);
721
722 void (*transquant_bypass[4])(uint8_t *dst, int16_t *coeffs,
723 ptrdiff_t stride);
724
725 void (*transform_skip)(uint8_t *dst, int16_t *coeffs, ptrdiff_t stride);
726 void (*transform_4x4_luma_add)(uint8_t *dst, int16_t *coeffs,
727 ptrdiff_t stride);
728 void (*transform_add[4])(uint8_t *dst, int16_t *coeffs, ptrdiff_t stride);
729
730 void (*sao_band_filter[4])(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
731 struct SAOParams *sao, int *borders,
732 int width, int height, int c_idx);
733 void (*sao_edge_filter[4])(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
734 struct SAOParams *sao, int *borders, int width,
735 int height, int c_idx, uint8_t vert_edge,
736 uint8_t horiz_edge, uint8_t diag_edge);
737
738 void (*put_hevc_qpel[4][4])(int16_t *dst, ptrdiff_t dststride, uint8_t *src,
739 ptrdiff_t srcstride, int width, int height,
740 int16_t *mcbuffer);
741 void (*put_hevc_epel[2][2])(int16_t *dst, ptrdiff_t dststride, uint8_t *src,
742 ptrdiff_t srcstride, int width, int height,
743 int mx, int my, int16_t *mcbuffer);
744
745 void (*put_unweighted_pred)(uint8_t *dst, ptrdiff_t dststride, int16_t *src,
746 ptrdiff_t srcstride, int width, int height);
747 void (*put_weighted_pred_avg)(uint8_t *dst, ptrdiff_t dststride,
748 int16_t *src1, int16_t *src2,
749 ptrdiff_t srcstride, int width, int height);
750 void (*weighted_pred)(uint8_t denom, int16_t wlxFlag, int16_t olxFlag,
751 uint8_t *dst, ptrdiff_t dststride, int16_t *src,
752 ptrdiff_t srcstride, int width, int height);
753 void (*weighted_pred_avg)(uint8_t denom, int16_t wl0Flag, int16_t wl1Flag,
754 int16_t ol0Flag, int16_t ol1Flag, uint8_t *dst,
755 ptrdiff_t dststride, int16_t *src1, int16_t *src2,
756 ptrdiff_t srcstride, int width, int height);
757
758 void (*hevc_h_loop_filter_luma)(uint8_t *pix, ptrdiff_t stride,
759 int *beta, int *tc,
760 uint8_t *no_p, uint8_t *no_q);
761 void (*hevc_v_loop_filter_luma)(uint8_t *pix, ptrdiff_t stride,
762 int *beta, int *tc,
763 uint8_t *no_p, uint8_t *no_q);
764 void (*hevc_h_loop_filter_chroma)(uint8_t *pix, ptrdiff_t stride,
765 int *tc, uint8_t *no_p, uint8_t *no_q);
766 void (*hevc_v_loop_filter_chroma)(uint8_t *pix, ptrdiff_t stride,
767 int *tc, uint8_t *no_p, uint8_t *no_q);
768 void (*hevc_h_loop_filter_luma_c)(uint8_t *pix, ptrdiff_t stride,
769 int *beta, int *tc,
770 uint8_t *no_p, uint8_t *no_q);
771 void (*hevc_v_loop_filter_luma_c)(uint8_t *pix, ptrdiff_t stride,
772 int *beta, int *tc,
773 uint8_t *no_p, uint8_t *no_q);
774 void (*hevc_h_loop_filter_chroma_c)(uint8_t *pix, ptrdiff_t stride,
775 int *tc, uint8_t *no_p,
776 uint8_t *no_q);
777 void (*hevc_v_loop_filter_chroma_c)(uint8_t *pix, ptrdiff_t stride,
778 int *tc, uint8_t *no_p,
779 uint8_t *no_q);
780 } HEVCDSPContext;
781
782 struct HEVCContext;
783
784 typedef struct HEVCPredContext {
785 void (*intra_pred)(struct HEVCContext *s, int x0, int y0,
786 int log2_size, int c_idx);
787
788 void (*pred_planar[4])(uint8_t *src, const uint8_t *top,
789 const uint8_t *left, ptrdiff_t stride);
790 void (*pred_dc)(uint8_t *src, const uint8_t *top, const uint8_t *left,
791 ptrdiff_t stride, int log2_size, int c_idx);
792 void (*pred_angular[4])(uint8_t *src, const uint8_t *top,
793 const uint8_t *left, ptrdiff_t stride,
794 int c_idx, int mode);
795 } HEVCPredContext;
796
797 typedef struct HEVCLocalContext {
798 DECLARE_ALIGNED(16, int16_t, mc_buffer[(MAX_PB_SIZE + 7) * MAX_PB_SIZE]);
799 uint8_t cabac_state[HEVC_CONTEXTS];
800
801 uint8_t first_qp_group;
802
803 GetBitContext gb;
804 CABACContext cc;
805 TransformTree tt;
806
807 int8_t qp_y;
808 int8_t curr_qp_y;
809
810 TransformUnit tu;
811
812 uint8_t ctb_left_flag;
813 uint8_t ctb_up_flag;
814 uint8_t ctb_up_right_flag;
815 uint8_t ctb_up_left_flag;
816 int start_of_tiles_x;
817 int end_of_tiles_x;
818 int end_of_tiles_y;
819 uint8_t *edge_emu_buffer;
820 int edge_emu_buffer_size;
821 CodingTree ct;
822 CodingUnit cu;
823 PredictionUnit pu;
824 NeighbourAvailable na;
825
826 uint8_t slice_or_tiles_left_boundary;
827 uint8_t slice_or_tiles_up_boundary;
828 } HEVCLocalContext;
829
830 typedef struct HEVCContext {
831 const AVClass *c; // needed by private avoptions
832 AVCodecContext *avctx;
833
834 HEVCLocalContext HEVClc;
835
836 uint8_t cabac_state[HEVC_CONTEXTS];
837
838 /** 1 if the independent slice segment header was successfully parsed */
839 uint8_t slice_initialized;
840
841 AVFrame *frame;
842 AVFrame *sao_frame;
843 AVFrame *tmp_frame;
844 AVFrame *output_frame;
845
846 const HEVCVPS *vps;
847 const HEVCSPS *sps;
848 const HEVCPPS *pps;
849 AVBufferRef *vps_list[MAX_VPS_COUNT];
850 AVBufferRef *sps_list[MAX_SPS_COUNT];
851 AVBufferRef *pps_list[MAX_PPS_COUNT];
852
853 AVBufferPool *tab_mvf_pool;
854 AVBufferPool *rpl_tab_pool;
855
856 ///< candidate references for the current frame
857 RefPicList rps[5];
858
859 SliceHeader sh;
860 SAOParams *sao;
861 DBParams *deblock;
862 enum NALUnitType nal_unit_type;
863 int temporal_id; ///< temporal_id_plus1 - 1
864 HEVCFrame *ref;
865 HEVCFrame DPB[32];
866 int poc;
867 int pocTid0;
868 int slice_idx; ///< number of the slice being currently decoded
869 int eos; ///< current packet contains an EOS/EOB NAL
870 int max_ra;
871 int bs_width;
872 int bs_height;
873
874 int is_decoded;
875
876 HEVCPredContext hpc;
877 HEVCDSPContext hevcdsp;
878 VideoDSPContext vdsp;
879 DSPContext dsp;
880 int8_t *qp_y_tab;
881 uint8_t *split_cu_flag;
882 uint8_t *horizontal_bs;
883 uint8_t *vertical_bs;
884
885 int32_t *tab_slice_address;
886
887 // CU
888 uint8_t *skip_flag;
889 uint8_t *tab_ct_depth;
890 // PU
891 uint8_t *tab_ipm;
892
893 uint8_t *cbf_luma; // cbf_luma of colocated TU
894 uint8_t *is_pcm;
895
896 // CTB-level flags affecting loop filter operation
897 uint8_t *filter_slice_edges;
898
899 /** used on BE to byteswap the lines for checksumming */
900 uint8_t *checksum_buf;
901 int checksum_buf_size;
902
903 /**
904 * Sequence counters for decoded and output frames, so that old
905 * frames are output first after a POC reset
906 */
907 uint16_t seq_decode;
908 uint16_t seq_output;
909
910 HEVCNAL *nals;
911 int nb_nals;
912 int nals_allocated;
913
914 // for checking the frame checksums
915 struct AVMD5 *md5_ctx;
916 uint8_t md5[3][16];
917 uint8_t is_md5;
918
919 uint8_t context_initialized;
920 uint8_t is_nalff; ///< this flag is != 0 if bitstream is encapsulated
921 ///< as a format defined in 14496-15
922 int apply_defdispwin;
923
924 int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
925 int nuh_layer_id;
926
927 /** frame packing arrangement variables */
928 int sei_frame_packing_present;
929 int frame_packing_arrangement_type;
930 int content_interpretation_type;
931 int quincunx_subsampling;
932 } HEVCContext;
933
934 int ff_hevc_decode_short_term_rps(HEVCContext *s, ShortTermRPS *rps,
935 const HEVCSPS *sps, int is_slice_header);
936 int ff_hevc_decode_nal_vps(HEVCContext *s);
937 int ff_hevc_decode_nal_sps(HEVCContext *s);
938 int ff_hevc_decode_nal_pps(HEVCContext *s);
939 int ff_hevc_decode_nal_sei(HEVCContext *s);
940
941 /**
942 * Mark all frames in DPB as unused for reference.
943 */
944 void ff_hevc_clear_refs(HEVCContext *s);
945
946 /**
947 * Drop all frames currently in DPB.
948 */
949 void ff_hevc_flush_dpb(HEVCContext *s);
950
951 /**
952 * Compute POC of the current frame and return it.
953 */
954 int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb);
955
956 RefPicList *ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *frame,
957 int x0, int y0);
958
959 /**
960 * Construct the reference picture sets for the current frame.
961 */
962 int ff_hevc_frame_rps(HEVCContext *s);
963
964 /**
965 * Construct the reference picture list(s) for the current slice.
966 */
967 int ff_hevc_slice_rpl(HEVCContext *s);
968
969 void ff_hevc_save_states(HEVCContext *s, int ctb_addr_ts);
970 void ff_hevc_cabac_init(HEVCContext *s, int ctb_addr_ts);
971 int ff_hevc_sao_merge_flag_decode(HEVCContext *s);
972 int ff_hevc_sao_type_idx_decode(HEVCContext *s);
973 int ff_hevc_sao_band_position_decode(HEVCContext *s);
974 int ff_hevc_sao_offset_abs_decode(HEVCContext *s);
975 int ff_hevc_sao_offset_sign_decode(HEVCContext *s);
976 int ff_hevc_sao_eo_class_decode(HEVCContext *s);
977 int ff_hevc_end_of_slice_flag_decode(HEVCContext *s);
978 int ff_hevc_cu_transquant_bypass_flag_decode(HEVCContext *s);
979 int ff_hevc_skip_flag_decode(HEVCContext *s, int x0, int y0,
980 int x_cb, int y_cb);
981 int ff_hevc_pred_mode_decode(HEVCContext *s);
982 int ff_hevc_split_coding_unit_flag_decode(HEVCContext *s, int ct_depth,
983 int x0, int y0);
984 int ff_hevc_part_mode_decode(HEVCContext *s, int log2_cb_size);
985 int ff_hevc_pcm_flag_decode(HEVCContext *s);
986 int ff_hevc_prev_intra_luma_pred_flag_decode(HEVCContext *s);
987 int ff_hevc_mpm_idx_decode(HEVCContext *s);
988 int ff_hevc_rem_intra_luma_pred_mode_decode(HEVCContext *s);
989 int ff_hevc_intra_chroma_pred_mode_decode(HEVCContext *s);
990 int ff_hevc_merge_idx_decode(HEVCContext *s);
991 int ff_hevc_merge_flag_decode(HEVCContext *s);
992 int ff_hevc_inter_pred_idc_decode(HEVCContext *s, int nPbW, int nPbH);
993 int ff_hevc_ref_idx_lx_decode(HEVCContext *s, int num_ref_idx_lx);
994 int ff_hevc_mvp_lx_flag_decode(HEVCContext *s);
995 int ff_hevc_no_residual_syntax_flag_decode(HEVCContext *s);
996 int ff_hevc_abs_mvd_greater0_flag_decode(HEVCContext *s);
997 int ff_hevc_abs_mvd_greater1_flag_decode(HEVCContext *s);
998 int ff_hevc_mvd_decode(HEVCContext *s);
999 int ff_hevc_mvd_sign_flag_decode(HEVCContext *s);
1000 int ff_hevc_split_transform_flag_decode(HEVCContext *s, int log2_trafo_size);
1001 int ff_hevc_cbf_cb_cr_decode(HEVCContext *s, int trafo_depth);
1002 int ff_hevc_cbf_luma_decode(HEVCContext *s, int trafo_depth);
1003 int ff_hevc_transform_skip_flag_decode(HEVCContext *s, int c_idx);
1004 int ff_hevc_last_significant_coeff_x_prefix_decode(HEVCContext *s, int c_idx,
1005 int log2_size);
1006 int ff_hevc_last_significant_coeff_y_prefix_decode(HEVCContext *s, int c_idx,
1007 int log2_size);
1008 int ff_hevc_last_significant_coeff_suffix_decode(HEVCContext *s,
1009 int last_significant_coeff_prefix);
1010 int ff_hevc_significant_coeff_group_flag_decode(HEVCContext *s, int c_idx,
1011 int ctx_cg);
1012 int ff_hevc_significant_coeff_flag_decode(HEVCContext *s, int c_idx, int x_c,
1013 int y_c, int log2_trafo_size,
1014 int scan_idx, int prev_sig);
1015 int ff_hevc_coeff_abs_level_greater1_flag_decode(HEVCContext *s, int c_idx,
1016 int ctx_set);
1017 int ff_hevc_coeff_abs_level_greater2_flag_decode(HEVCContext *s, int c_idx,
1018 int inc);
1019 int ff_hevc_coeff_abs_level_remaining(HEVCContext *s, int base_level,
1020 int rc_rice_param);
1021 int ff_hevc_coeff_sign_flag(HEVCContext *s, uint8_t nb);
1022
1023 /**
1024 * Get the number of candidate references for the current frame.
1025 */
1026 int ff_hevc_frame_nb_refs(HEVCContext *s);
1027
1028 int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc);
1029
1030 /**
1031 * Find next frame in output order and put a reference to it in frame.
1032 * @return 1 if a frame was output, 0 otherwise
1033 */
1034 int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush);
1035
1036 void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags);
1037
1038 void ff_hevc_set_neighbour_available(HEVCContext *s, int x0, int y0,
1039 int nPbW, int nPbH);
1040 void ff_hevc_luma_mv_merge_mode(HEVCContext *s, int x0, int y0,
1041 int nPbW, int nPbH, int log2_cb_size,
1042 int part_idx, int merge_idx, MvField *mv);
1043 void ff_hevc_luma_mv_mvp_mode(HEVCContext *s, int x0, int y0,
1044 int nPbW, int nPbH, int log2_cb_size,
1045 int part_idx, int merge_idx,
1046 MvField *mv, int mvp_lx_flag, int LX);
1047 void ff_hevc_set_qPy(HEVCContext *s, int xC, int yC, int xBase, int yBase,
1048 int log2_cb_size);
1049 void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0,
1050 int log2_trafo_size,
1051 int slice_or_tiles_up_boundary,
1052 int slice_or_tiles_left_boundary);
1053 int ff_hevc_cu_qp_delta_sign_flag(HEVCContext *s);
1054 int ff_hevc_cu_qp_delta_abs(HEVCContext *s);
1055 void ff_hevc_hls_filter(HEVCContext *s, int x, int y);
1056 void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size);
1057
1058 void ff_hevc_pps_free(HEVCPPS **ppps);
1059
1060 void ff_hevc_pred_init(HEVCPredContext *hpc, int bit_depth);
1061
1062 void ff_hevc_dsp_init(HEVCDSPContext *hpc, int bit_depth);
1063
1064 extern const int8_t ff_hevc_epel_filters[7][16];
1065
1066 extern const uint8_t ff_hevc_qpel_extra_before[4];
1067 extern const uint8_t ff_hevc_qpel_extra_after[4];
1068 extern const uint8_t ff_hevc_qpel_extra[4];
1069
1070 extern const uint8_t ff_hevc_diag_scan4x4_x[16];
1071 extern const uint8_t ff_hevc_diag_scan4x4_y[16];
1072 extern const uint8_t ff_hevc_diag_scan8x8_x[64];
1073 extern const uint8_t ff_hevc_diag_scan8x8_y[64];
1074
1075 #endif /* AVCODEC_HEVC_H */