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Imported Debian version 2.4.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / hevc.h
CommitLineData
2ba45a60
DM		 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_HEVC_H
24#define AVCODEC_HEVC_H
25
26#include "libavutil/buffer.h"
27#include "libavutil/md5.h"
28
29#include "avcodec.h"
30#include "bswapdsp.h"
31#include "cabac.h"
32#include "get_bits.h"
33#include "hevcpred.h"
34#include "hevcdsp.h"
35#include "internal.h"
36#include "thread.h"
37#include "videodsp.h"
38
39#define MAX_DPB_SIZE 16 // A.4.1
40#define MAX_REFS 16
41
42#define MAX_NB_THREADS 16
43#define SHIFT_CTB_WPP 2
44
45/**
46 * 7.4.2.1
47 */
48#define MAX_SUB_LAYERS 7
49#define MAX_VPS_COUNT 16
50#define MAX_SPS_COUNT 32
51#define MAX_PPS_COUNT 256
52#define MAX_SHORT_TERM_RPS_COUNT 64
53#define MAX_CU_SIZE 128
54
55//TODO: check if this is really the maximum
56#define MAX_TRANSFORM_DEPTH 5
57
58#define MAX_TB_SIZE 32
59#define MAX_LOG2_CTB_SIZE 6
60#define MAX_QP 51
61#define DEFAULT_INTRA_TC_OFFSET 2
62
63#define HEVC_CONTEXTS 199
64
65#define MRG_MAX_NUM_CANDS 5
66
67#define L0 0
68#define L1 1
69
70#define EPEL_EXTRA_BEFORE 1
71#define EPEL_EXTRA_AFTER 2
72#define EPEL_EXTRA 3
73#define QPEL_EXTRA_BEFORE 3
74#define QPEL_EXTRA_AFTER 4
75#define QPEL_EXTRA 7
76
77#define EDGE_EMU_BUFFER_STRIDE 80
78
79/**
80 * Value of the luma sample at position (x, y) in the 2D array tab.
81 */
82#define SAMPLE(tab, x, y) ((tab)[(y) * s->sps->width + (x)])
83#define SAMPLE_CTB(tab, x, y) ((tab)[(y) * min_cb_width + (x)])
84
85#define IS_IDR(s) ((s)->nal_unit_type == NAL_IDR_W_RADL || (s)->nal_unit_type == NAL_IDR_N_LP)
86#define IS_BLA(s) ((s)->nal_unit_type == NAL_BLA_W_RADL || (s)->nal_unit_type == NAL_BLA_W_LP || \
87 (s)->nal_unit_type == NAL_BLA_N_LP)
88#define IS_IRAP(s) ((s)->nal_unit_type >= 16 && (s)->nal_unit_type <= 23)
89
90/**
91 * Table 7-3: NAL unit type codes
92 */
93enum NALUnitType {
94 NAL_TRAIL_N = 0,
95 NAL_TRAIL_R = 1,
96 NAL_TSA_N = 2,
97 NAL_TSA_R = 3,
98 NAL_STSA_N = 4,
99 NAL_STSA_R = 5,
100 NAL_RADL_N = 6,
101 NAL_RADL_R = 7,
102 NAL_RASL_N = 8,
103 NAL_RASL_R = 9,
104 NAL_BLA_W_LP = 16,
105 NAL_BLA_W_RADL = 17,
106 NAL_BLA_N_LP = 18,
107 NAL_IDR_W_RADL = 19,
108 NAL_IDR_N_LP = 20,
109 NAL_CRA_NUT = 21,
110 NAL_VPS = 32,
111 NAL_SPS = 33,
112 NAL_PPS = 34,
113 NAL_AUD = 35,
114 NAL_EOS_NUT = 36,
115 NAL_EOB_NUT = 37,
116 NAL_FD_NUT = 38,
117 NAL_SEI_PREFIX = 39,
118 NAL_SEI_SUFFIX = 40,
119};
120
121enum RPSType {
122 ST_CURR_BEF = 0,
123 ST_CURR_AFT,
124 ST_FOLL,
125 LT_CURR,
126 LT_FOLL,
127 NB_RPS_TYPE,
128};
129
130enum SliceType {
131 B_SLICE = 0,
132 P_SLICE = 1,
133 I_SLICE = 2,
134};
135
136enum SyntaxElement {
137 SAO_MERGE_FLAG = 0,
138 SAO_TYPE_IDX,
139 SAO_EO_CLASS,
140 SAO_BAND_POSITION,
141 SAO_OFFSET_ABS,
142 SAO_OFFSET_SIGN,
143 END_OF_SLICE_FLAG,
144 SPLIT_CODING_UNIT_FLAG,
145 CU_TRANSQUANT_BYPASS_FLAG,
146 SKIP_FLAG,
147 CU_QP_DELTA,
148 PRED_MODE_FLAG,
149 PART_MODE,
150 PCM_FLAG,
151 PREV_INTRA_LUMA_PRED_FLAG,
152 MPM_IDX,
153 REM_INTRA_LUMA_PRED_MODE,
154 INTRA_CHROMA_PRED_MODE,
155 MERGE_FLAG,
156 MERGE_IDX,
157 INTER_PRED_IDC,
158 REF_IDX_L0,
159 REF_IDX_L1,
160 ABS_MVD_GREATER0_FLAG,
161 ABS_MVD_GREATER1_FLAG,
162 ABS_MVD_MINUS2,
163 MVD_SIGN_FLAG,
164 MVP_LX_FLAG,
165 NO_RESIDUAL_DATA_FLAG,
166 SPLIT_TRANSFORM_FLAG,
167 CBF_LUMA,
168 CBF_CB_CR,
169 TRANSFORM_SKIP_FLAG,
170 EXPLICIT_RDPCM_FLAG,
171 EXPLICIT_RDPCM_DIR_FLAG,
172 LAST_SIGNIFICANT_COEFF_X_PREFIX,
173 LAST_SIGNIFICANT_COEFF_Y_PREFIX,
174 LAST_SIGNIFICANT_COEFF_X_SUFFIX,
175 LAST_SIGNIFICANT_COEFF_Y_SUFFIX,
176 SIGNIFICANT_COEFF_GROUP_FLAG,
177 SIGNIFICANT_COEFF_FLAG,
178 COEFF_ABS_LEVEL_GREATER1_FLAG,
179 COEFF_ABS_LEVEL_GREATER2_FLAG,
180 COEFF_ABS_LEVEL_REMAINING,
181 COEFF_SIGN_FLAG,
182 LOG2_RES_SCALE_ABS,
183 RES_SCALE_SIGN_FLAG,
184 CU_CHROMA_QP_OFFSET_FLAG,
185 CU_CHROMA_QP_OFFSET_IDX,
186};
187
188enum PartMode {
189 PART_2Nx2N = 0,
190 PART_2NxN = 1,
191 PART_Nx2N = 2,
192 PART_NxN = 3,
193 PART_2NxnU = 4,
194 PART_2NxnD = 5,
195 PART_nLx2N = 6,
196 PART_nRx2N = 7,
197};
198
199enum PredMode {
200 MODE_INTER = 0,
201 MODE_INTRA,
202 MODE_SKIP,
203};
204
205enum InterPredIdc {
206 PRED_L0 = 0,
207 PRED_L1,
208 PRED_BI,
209};
210
211enum PredFlag {
212 PF_INTRA = 0,
213 PF_L0,
214 PF_L1,
215 PF_BI,
216};
217
218enum IntraPredMode {
219 INTRA_PLANAR = 0,
220 INTRA_DC,
221 INTRA_ANGULAR_2,
222 INTRA_ANGULAR_3,
223 INTRA_ANGULAR_4,
224 INTRA_ANGULAR_5,
225 INTRA_ANGULAR_6,
226 INTRA_ANGULAR_7,
227 INTRA_ANGULAR_8,
228 INTRA_ANGULAR_9,
229 INTRA_ANGULAR_10,
230 INTRA_ANGULAR_11,
231 INTRA_ANGULAR_12,
232 INTRA_ANGULAR_13,
233 INTRA_ANGULAR_14,
234 INTRA_ANGULAR_15,
235 INTRA_ANGULAR_16,
236 INTRA_ANGULAR_17,
237 INTRA_ANGULAR_18,
238 INTRA_ANGULAR_19,
239 INTRA_ANGULAR_20,
240 INTRA_ANGULAR_21,
241 INTRA_ANGULAR_22,
242 INTRA_ANGULAR_23,
243 INTRA_ANGULAR_24,
244 INTRA_ANGULAR_25,
245 INTRA_ANGULAR_26,
246 INTRA_ANGULAR_27,
247 INTRA_ANGULAR_28,
248 INTRA_ANGULAR_29,
249 INTRA_ANGULAR_30,
250 INTRA_ANGULAR_31,
251 INTRA_ANGULAR_32,
252 INTRA_ANGULAR_33,
253 INTRA_ANGULAR_34,
254};
255
256enum SAOType {
257 SAO_NOT_APPLIED = 0,
258 SAO_BAND,
259 SAO_EDGE,
260 SAO_APPLIED
261};
262
263enum SAOEOClass {
264 SAO_EO_HORIZ = 0,
265 SAO_EO_VERT,
266 SAO_EO_135D,
267 SAO_EO_45D,
268};
269
270enum ScanType {
271 SCAN_DIAG = 0,
272 SCAN_HORIZ,
273 SCAN_VERT,
274};
275
276typedef struct ShortTermRPS {
277 unsigned int num_negative_pics;
278 int num_delta_pocs;
279 int32_t delta_poc[32];
280 uint8_t used[32];
281} ShortTermRPS;
282
283typedef struct LongTermRPS {
284 int poc[32];
285 uint8_t used[32];
286 uint8_t nb_refs;
287} LongTermRPS;
288
289typedef struct RefPicList {
290 struct HEVCFrame *ref[MAX_REFS];
291 int list[MAX_REFS];
292 int isLongTerm[MAX_REFS];
293 int nb_refs;
294} RefPicList;
295
296typedef struct RefPicListTab {
297 RefPicList refPicList[2];
298} RefPicListTab;
299
300typedef struct HEVCWindow {
301 int left_offset;
302 int right_offset;
303 int top_offset;
304 int bottom_offset;
305} HEVCWindow;
306
307typedef struct VUI {
308 AVRational sar;
309
310 int overscan_info_present_flag;
311 int overscan_appropriate_flag;
312
313 int video_signal_type_present_flag;
314 int video_format;
315 int video_full_range_flag;
316 int colour_description_present_flag;
317 uint8_t colour_primaries;
318 uint8_t transfer_characteristic;
319 uint8_t matrix_coeffs;
320
321 int chroma_loc_info_present_flag;
322 int chroma_sample_loc_type_top_field;
323 int chroma_sample_loc_type_bottom_field;
324 int neutra_chroma_indication_flag;
325
326 int field_seq_flag;
327 int frame_field_info_present_flag;
328
329 int default_display_window_flag;
330 HEVCWindow def_disp_win;
331
332 int vui_timing_info_present_flag;
333 uint32_t vui_num_units_in_tick;
334 uint32_t vui_time_scale;
335 int vui_poc_proportional_to_timing_flag;
336 int vui_num_ticks_poc_diff_one_minus1;
337 int vui_hrd_parameters_present_flag;
338
339 int bitstream_restriction_flag;
340 int tiles_fixed_structure_flag;
341 int motion_vectors_over_pic_boundaries_flag;
342 int restricted_ref_pic_lists_flag;
343 int min_spatial_segmentation_idc;
344 int max_bytes_per_pic_denom;
345 int max_bits_per_min_cu_denom;
346 int log2_max_mv_length_horizontal;
347 int log2_max_mv_length_vertical;
348} VUI;
349
350typedef struct PTLCommon {
351 uint8_t profile_space;
352 uint8_t tier_flag;
353 uint8_t profile_idc;
354 uint8_t profile_compatibility_flag[32];
355 uint8_t level_idc;
356 uint8_t progressive_source_flag;
357 uint8_t interlaced_source_flag;
358 uint8_t non_packed_constraint_flag;
359 uint8_t frame_only_constraint_flag;
360} PTLCommon;
361
362typedef struct PTL {
363 PTLCommon general_ptl;
364 PTLCommon sub_layer_ptl[MAX_SUB_LAYERS];
365
366 uint8_t sub_layer_profile_present_flag[MAX_SUB_LAYERS];
367 uint8_t sub_layer_level_present_flag[MAX_SUB_LAYERS];
368} PTL;
369
370typedef struct HEVCVPS {
371 uint8_t vps_temporal_id_nesting_flag;
372 int vps_max_layers;
373 int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1
374
375 PTL ptl;
376 int vps_sub_layer_ordering_info_present_flag;
377 unsigned int vps_max_dec_pic_buffering[MAX_SUB_LAYERS];
378 unsigned int vps_num_reorder_pics[MAX_SUB_LAYERS];
379 unsigned int vps_max_latency_increase[MAX_SUB_LAYERS];
380 int vps_max_layer_id;
381 int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1
382 uint8_t vps_timing_info_present_flag;
383 uint32_t vps_num_units_in_tick;
384 uint32_t vps_time_scale;
385 uint8_t vps_poc_proportional_to_timing_flag;
386 int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1
387 int vps_num_hrd_parameters;
388} HEVCVPS;
389
390typedef struct ScalingList {
391 /* This is a little wasteful, since sizeID 0 only needs 8 coeffs,
392 * and size ID 3 only has 2 arrays, not 6. */
393 uint8_t sl[4][6][64];
394 uint8_t sl_dc[2][6];
395} ScalingList;
396
397typedef struct HEVCSPS {
398 unsigned vps_id;
399 int chroma_format_idc;
400 uint8_t separate_colour_plane_flag;
401
402 ///< output (i.e. cropped) values
403 int output_width, output_height;
404 HEVCWindow output_window;
405
406 HEVCWindow pic_conf_win;
407
408 int bit_depth;
409 int pixel_shift;
410 enum AVPixelFormat pix_fmt;
411
412 unsigned int log2_max_poc_lsb;
413 int pcm_enabled_flag;
414
415 int max_sub_layers;
416 struct {
417 int max_dec_pic_buffering;
418 int num_reorder_pics;
419 int max_latency_increase;
420 } temporal_layer[MAX_SUB_LAYERS];
421
422 VUI vui;
423 PTL ptl;
424
425 uint8_t scaling_list_enable_flag;
426 ScalingList scaling_list;
427
428 unsigned int nb_st_rps;
429 ShortTermRPS st_rps[MAX_SHORT_TERM_RPS_COUNT];
430
431 uint8_t amp_enabled_flag;
432 uint8_t sao_enabled;
433
434 uint8_t long_term_ref_pics_present_flag;
435 uint16_t lt_ref_pic_poc_lsb_sps[32];
436 uint8_t used_by_curr_pic_lt_sps_flag[32];
437 uint8_t num_long_term_ref_pics_sps;
438
439 struct {
440 uint8_t bit_depth;
441 uint8_t bit_depth_chroma;
442 unsigned int log2_min_pcm_cb_size;
443 unsigned int log2_max_pcm_cb_size;
444 uint8_t loop_filter_disable_flag;
445 } pcm;
446 uint8_t sps_temporal_mvp_enabled_flag;
447 uint8_t sps_strong_intra_smoothing_enable_flag;
448
449 unsigned int log2_min_cb_size;
450 unsigned int log2_diff_max_min_coding_block_size;
451 unsigned int log2_min_tb_size;
452 unsigned int log2_max_trafo_size;
453 unsigned int log2_ctb_size;
454 unsigned int log2_min_pu_size;
455
456 int max_transform_hierarchy_depth_inter;
457 int max_transform_hierarchy_depth_intra;
458
459 int transform_skip_rotation_enabled_flag;
460 int transform_skip_context_enabled_flag;
461 int implicit_rdpcm_enabled_flag;
462 int explicit_rdpcm_enabled_flag;
463 int intra_smoothing_disabled_flag;
464 int persistent_rice_adaptation_enabled_flag;
465
466 ///< coded frame dimension in various units
467 int width;
468 int height;
469 int ctb_width;
470 int ctb_height;
471 int ctb_size;
472 int min_cb_width;
473 int min_cb_height;
474 int min_tb_width;
475 int min_tb_height;
476 int min_pu_width;
477 int min_pu_height;
478 int tb_mask;
479
480 int hshift[3];
481 int vshift[3];
482
483 int qp_bd_offset;
484} HEVCSPS;
485
486typedef struct HEVCPPS {
487 unsigned int sps_id; ///< seq_parameter_set_id
488
489 uint8_t sign_data_hiding_flag;
490
491 uint8_t cabac_init_present_flag;
492
493 int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1
494 int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1
495 int pic_init_qp_minus26;
496
497 uint8_t constrained_intra_pred_flag;
498 uint8_t transform_skip_enabled_flag;
499
500 uint8_t cu_qp_delta_enabled_flag;
501 int diff_cu_qp_delta_depth;
502
503 int cb_qp_offset;
504 int cr_qp_offset;
505 uint8_t pic_slice_level_chroma_qp_offsets_present_flag;
506 uint8_t weighted_pred_flag;
507 uint8_t weighted_bipred_flag;
508 uint8_t output_flag_present_flag;
509 uint8_t transquant_bypass_enable_flag;
510
511 uint8_t dependent_slice_segments_enabled_flag;
512 uint8_t tiles_enabled_flag;
513 uint8_t entropy_coding_sync_enabled_flag;
514
515 int num_tile_columns; ///< num_tile_columns_minus1 + 1
516 int num_tile_rows; ///< num_tile_rows_minus1 + 1
517 uint8_t uniform_spacing_flag;
518 uint8_t loop_filter_across_tiles_enabled_flag;
519
520 uint8_t seq_loop_filter_across_slices_enabled_flag;
521
522 uint8_t deblocking_filter_control_present_flag;
523 uint8_t deblocking_filter_override_enabled_flag;
524 uint8_t disable_dbf;
525 int beta_offset; ///< beta_offset_div2 * 2
526 int tc_offset; ///< tc_offset_div2 * 2
527
528 uint8_t scaling_list_data_present_flag;
529 ScalingList scaling_list;
530
531 uint8_t lists_modification_present_flag;
532 int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2
533 int num_extra_slice_header_bits;
534 uint8_t slice_header_extension_present_flag;
535 uint8_t log2_max_transform_skip_block_size;
536 uint8_t cross_component_prediction_enabled_flag;
537 uint8_t chroma_qp_offset_list_enabled_flag;
538 uint8_t diff_cu_chroma_qp_offset_depth;
539 uint8_t chroma_qp_offset_list_len_minus1;
540 int8_t cb_qp_offset_list[5];
541 int8_t cr_qp_offset_list[5];
542 uint8_t log2_sao_offset_scale_luma;
543 uint8_t log2_sao_offset_scale_chroma;
544
545 // Inferred parameters
546 unsigned int *column_width; ///< ColumnWidth
547 unsigned int *row_height; ///< RowHeight
548 unsigned int *col_bd; ///< ColBd
549 unsigned int *row_bd; ///< RowBd
550 int *col_idxX;
551
552 int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS
553 int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS
554 int *tile_id; ///< TileId
555 int *tile_pos_rs; ///< TilePosRS
556 int *min_tb_addr_zs; ///< MinTbAddrZS
557 int *min_tb_addr_zs_tab;///< MinTbAddrZS
558} HEVCPPS;
559
560typedef struct SliceHeader {
561 unsigned int pps_id;
562
563 ///< address (in raster order) of the first block in the current slice segment
564 unsigned int slice_segment_addr;
565 ///< address (in raster order) of the first block in the current slice
566 unsigned int slice_addr;
567
568 enum SliceType slice_type;
569
570 int pic_order_cnt_lsb;
571
572 uint8_t first_slice_in_pic_flag;
573 uint8_t dependent_slice_segment_flag;
574 uint8_t pic_output_flag;
575 uint8_t colour_plane_id;
576
577 ///< RPS coded in the slice header itself is stored here
578 ShortTermRPS slice_rps;
579 const ShortTermRPS *short_term_rps;
580 LongTermRPS long_term_rps;
581 unsigned int list_entry_lx[2][32];
582
583 uint8_t rpl_modification_flag[2];
584 uint8_t no_output_of_prior_pics_flag;
585 uint8_t slice_temporal_mvp_enabled_flag;
586
587 unsigned int nb_refs[2];
588
589 uint8_t slice_sample_adaptive_offset_flag[3];
590 uint8_t mvd_l1_zero_flag;
591
592 uint8_t cabac_init_flag;
593 uint8_t disable_deblocking_filter_flag; ///< slice_header_disable_deblocking_filter_flag
594 uint8_t slice_loop_filter_across_slices_enabled_flag;
595 uint8_t collocated_list;
596
597 unsigned int collocated_ref_idx;
598
599 int slice_qp_delta;
600 int slice_cb_qp_offset;
601 int slice_cr_qp_offset;
602
603 uint8_t cu_chroma_qp_offset_enabled_flag;
604
605 int beta_offset; ///< beta_offset_div2 * 2
606 int tc_offset; ///< tc_offset_div2 * 2
607
608 unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand
609
610 int *entry_point_offset;
611 int * offset;
612 int * size;
613 int num_entry_point_offsets;
614
615 int8_t slice_qp;
616
617 uint8_t luma_log2_weight_denom;
618 int16_t chroma_log2_weight_denom;
619
620 int16_t luma_weight_l0[16];
621 int16_t chroma_weight_l0[16][2];
622 int16_t chroma_weight_l1[16][2];
623 int16_t luma_weight_l1[16];
624
625 int16_t luma_offset_l0[16];
626 int16_t chroma_offset_l0[16][2];
627
628 int16_t luma_offset_l1[16];
629 int16_t chroma_offset_l1[16][2];
630
631 int slice_ctb_addr_rs;
632} SliceHeader;
633
634typedef struct CodingTree {
635 int depth; ///< ctDepth
636} CodingTree;
637
638typedef struct CodingUnit {
639 int x;
640 int y;
641
642 enum PredMode pred_mode; ///< PredMode
643 enum PartMode part_mode; ///< PartMode
644
645 uint8_t rqt_root_cbf;
646
647 uint8_t pcm_flag;
648
649 // Inferred parameters
650 uint8_t intra_split_flag; ///< IntraSplitFlag
651 uint8_t max_trafo_depth; ///< MaxTrafoDepth
652 uint8_t cu_transquant_bypass_flag;
653} CodingUnit;
654
655typedef struct Mv {
656 int16_t x; ///< horizontal component of motion vector
657 int16_t y; ///< vertical component of motion vector
658} Mv;
659
660typedef struct MvField {
661 DECLARE_ALIGNED(4, Mv, mv)[2];
662 int8_t ref_idx[2];
663 int8_t pred_flag;
664} MvField;
665
666typedef struct NeighbourAvailable {
667 int cand_bottom_left;
668 int cand_left;
669 int cand_up;
670 int cand_up_left;
671 int cand_up_right;
672 int cand_up_right_sap;
673} NeighbourAvailable;
674
675typedef struct PredictionUnit {
676 int mpm_idx;
677 int rem_intra_luma_pred_mode;
678 uint8_t intra_pred_mode[4];
679 Mv mvd;
680 uint8_t merge_flag;
681 uint8_t intra_pred_mode_c[4];
682 uint8_t chroma_mode_c[4];
683} PredictionUnit;
684
685typedef struct TransformUnit {
686 DECLARE_ALIGNED(32, int16_t, coeffs[2][MAX_TB_SIZE * MAX_TB_SIZE]);
687 int cu_qp_delta;
688
689 int res_scale_val;
690
691 // Inferred parameters;
692 int intra_pred_mode;
693 int intra_pred_mode_c;
694 int chroma_mode_c;
695 uint8_t is_cu_qp_delta_coded;
696 uint8_t is_cu_chroma_qp_offset_coded;
697 int8_t cu_qp_offset_cb;
698 int8_t cu_qp_offset_cr;
699 uint8_t cross_pf;
700} TransformUnit;
701
702typedef struct DBParams {
703 int beta_offset;
704 int tc_offset;
705} DBParams;
706
707#define HEVC_FRAME_FLAG_OUTPUT (1 << 0)
708#define HEVC_FRAME_FLAG_SHORT_REF (1 << 1)
709#define HEVC_FRAME_FLAG_LONG_REF (1 << 2)
710#define HEVC_FRAME_FLAG_BUMPING (1 << 3)
711
712typedef struct HEVCFrame {
713 AVFrame *frame;
714 ThreadFrame tf;
715 MvField *tab_mvf;
716 RefPicList *refPicList;
717 RefPicListTab **rpl_tab;
718 int ctb_count;
719 int poc;
720 struct HEVCFrame *collocated_ref;
721
722 HEVCWindow window;
723
724 AVBufferRef *tab_mvf_buf;
725 AVBufferRef *rpl_tab_buf;
726 AVBufferRef *rpl_buf;
727
728 /**
729 * A sequence counter, so that old frames are output first
730 * after a POC reset
731 */
732 uint16_t sequence;
733
734 /**
735 * A combination of HEVC_FRAME_FLAG_*
736 */
737 uint8_t flags;
738} HEVCFrame;
739
740typedef struct HEVCNAL {
741 uint8_t *rbsp_buffer;
742 int rbsp_buffer_size;
743
744 int size;
745 const uint8_t *data;
746} HEVCNAL;
747
748typedef struct HEVCLocalContext {
749 DECLARE_ALIGNED(16, int16_t, mc_buffer[(MAX_PB_SIZE + 7) * MAX_PB_SIZE]);
750 uint8_t cabac_state[HEVC_CONTEXTS];
751
752 uint8_t stat_coeff[4];
753
754 uint8_t first_qp_group;
755
756 GetBitContext gb;
757 CABACContext cc;
758
759 int8_t qp_y;
760 int8_t curr_qp_y;
761
762 int qPy_pred;
763
764 TransformUnit tu;
765
766 uint8_t ctb_left_flag;
767 uint8_t ctb_up_flag;
768 uint8_t ctb_up_right_flag;
769 uint8_t ctb_up_left_flag;
770 int end_of_tiles_x;
771 int end_of_tiles_y;
772 /* +7 is for subpixel interpolation, *2 for high bit depths */
773 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
774 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer2)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
775
776 CodingTree ct;
777 CodingUnit cu;
778 PredictionUnit pu;
779 NeighbourAvailable na;
780
781#define BOUNDARY_LEFT_SLICE (1 << 0)
782#define BOUNDARY_LEFT_TILE (1 << 1)
783#define BOUNDARY_UPPER_SLICE (1 << 2)
784#define BOUNDARY_UPPER_TILE (1 << 3)
785 /* properties of the boundary of the current CTB for the purposes
786 * of the deblocking filter */
787 int boundary_flags;
788} HEVCLocalContext;
789
790typedef struct HEVCContext {
791 const AVClass *c; // needed by private avoptions
792 AVCodecContext *avctx;
793
794 struct HEVCContext *sList[MAX_NB_THREADS];
795
796 HEVCLocalContext *HEVClcList[MAX_NB_THREADS];
797 HEVCLocalContext *HEVClc;
798
799 uint8_t threads_type;
800 uint8_t threads_number;
801
802 int width;
803 int height;
804
805 uint8_t *cabac_state;
806
807 /** 1 if the independent slice segment header was successfully parsed */
808 uint8_t slice_initialized;
809
810 AVFrame *frame;
811 AVFrame *sao_frame;
812 AVFrame *tmp_frame;
813 AVFrame *output_frame;
814
815 const HEVCVPS *vps;
816 const HEVCSPS *sps;
817 const HEVCPPS *pps;
818 AVBufferRef *vps_list[MAX_VPS_COUNT];
819 AVBufferRef *sps_list[MAX_SPS_COUNT];
820 AVBufferRef *pps_list[MAX_PPS_COUNT];
821
822 AVBufferRef *current_sps;
823
824 AVBufferPool *tab_mvf_pool;
825 AVBufferPool *rpl_tab_pool;
826
827 ///< candidate references for the current frame
828 RefPicList rps[5];
829
830 SliceHeader sh;
831 SAOParams *sao;
832 DBParams *deblock;
833 enum NALUnitType nal_unit_type;
834 int temporal_id; ///< temporal_id_plus1 - 1
835 HEVCFrame *ref;
836 HEVCFrame DPB[32];
837 int poc;
838 int pocTid0;
839 int slice_idx; ///< number of the slice being currently decoded
840 int eos; ///< current packet contains an EOS/EOB NAL
841 int last_eos; ///< last packet contains an EOS/EOB NAL
842 int max_ra;
843 int bs_width;
844 int bs_height;
845
846 int is_decoded;
847
848 HEVCPredContext hpc;
849 HEVCDSPContext hevcdsp;
850 VideoDSPContext vdsp;
851 BswapDSPContext bdsp;
852 int8_t *qp_y_tab;
853 uint8_t *horizontal_bs;
854 uint8_t *vertical_bs;
855
856 int32_t *tab_slice_address;
857
858 // CU
859 uint8_t *skip_flag;
860 uint8_t *tab_ct_depth;
861 // PU
862 uint8_t *tab_ipm;
863
864 uint8_t *cbf_luma; // cbf_luma of colocated TU
865 uint8_t *is_pcm;
866
867 // CTB-level flags affecting loop filter operation
868 uint8_t *filter_slice_edges;
869
870 /** used on BE to byteswap the lines for checksumming */
871 uint8_t *checksum_buf;
872 int checksum_buf_size;
873
874 /**
875 * Sequence counters for decoded and output frames, so that old
876 * frames are output first after a POC reset
877 */
878 uint16_t seq_decode;
879 uint16_t seq_output;
880
881 int enable_parallel_tiles;
882 int wpp_err;
883 int skipped_bytes;
884 int *skipped_bytes_pos;
885 int skipped_bytes_pos_size;
886
887 int *skipped_bytes_nal;
888 int **skipped_bytes_pos_nal;
889 int *skipped_bytes_pos_size_nal;
890
891 const uint8_t *data;
892
893 HEVCNAL *nals;
894 int nb_nals;
895 int nals_allocated;
896 // type of the first VCL NAL of the current frame
897 enum NALUnitType first_nal_type;
898
899 // for checking the frame checksums
900 struct AVMD5 *md5_ctx;
901 uint8_t md5[3][16];
902 uint8_t is_md5;
903
904 uint8_t context_initialized;
905 uint8_t is_nalff; ///< this flag is != 0 if bitstream is encapsulated
906 ///< as a format defined in 14496-15
907 int apply_defdispwin;
908
909 int active_seq_parameter_set_id;
910
911 int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
912 int nuh_layer_id;
913
914 /** frame packing arrangement variables */
915 int sei_frame_packing_present;
916 int frame_packing_arrangement_type;
917 int content_interpretation_type;
918 int quincunx_subsampling;
919
920 /** display orientation */
921 int sei_display_orientation_present;
922 int sei_anticlockwise_rotation;
923 int sei_hflip, sei_vflip;
924
925 int picture_struct;
926} HEVCContext;
927
928int ff_hevc_decode_short_term_rps(HEVCContext *s, ShortTermRPS *rps,
929 const HEVCSPS *sps, int is_slice_header);
930int ff_hevc_decode_nal_vps(HEVCContext *s);
931int ff_hevc_decode_nal_sps(HEVCContext *s);
932int ff_hevc_decode_nal_pps(HEVCContext *s);
933int ff_hevc_decode_nal_sei(HEVCContext *s);
934
935int ff_hevc_extract_rbsp(HEVCContext *s, const uint8_t *src, int length,
936 HEVCNAL *nal);
937
938/**
939 * Mark all frames in DPB as unused for reference.
940 */
941void ff_hevc_clear_refs(HEVCContext *s);
942
943/**
944 * Drop all frames currently in DPB.
945 */
946void ff_hevc_flush_dpb(HEVCContext *s);
947
948/**
949 * Compute POC of the current frame and return it.
950 */
951int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb);
952
953RefPicList *ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *frame,
954 int x0, int y0);
955
956/**
957 * Construct the reference picture sets for the current frame.
958 */
959int ff_hevc_frame_rps(HEVCContext *s);
960
961/**
962 * Construct the reference picture list(s) for the current slice.
963 */
964int ff_hevc_slice_rpl(HEVCContext *s);
965
966void ff_hevc_save_states(HEVCContext *s, int ctb_addr_ts);
967void ff_hevc_cabac_init(HEVCContext *s, int ctb_addr_ts);
968int ff_hevc_sao_merge_flag_decode(HEVCContext *s);
969int ff_hevc_sao_type_idx_decode(HEVCContext *s);
970int ff_hevc_sao_band_position_decode(HEVCContext *s);
971int ff_hevc_sao_offset_abs_decode(HEVCContext *s);
972int ff_hevc_sao_offset_sign_decode(HEVCContext *s);
973int ff_hevc_sao_eo_class_decode(HEVCContext *s);
974int ff_hevc_end_of_slice_flag_decode(HEVCContext *s);
975int ff_hevc_cu_transquant_bypass_flag_decode(HEVCContext *s);
976int ff_hevc_skip_flag_decode(HEVCContext *s, int x0, int y0,
977 int x_cb, int y_cb);
978int ff_hevc_pred_mode_decode(HEVCContext *s);
979int ff_hevc_split_coding_unit_flag_decode(HEVCContext *s, int ct_depth,
980 int x0, int y0);
981int ff_hevc_part_mode_decode(HEVCContext *s, int log2_cb_size);
982int ff_hevc_pcm_flag_decode(HEVCContext *s);
983int ff_hevc_prev_intra_luma_pred_flag_decode(HEVCContext *s);
984int ff_hevc_mpm_idx_decode(HEVCContext *s);
985int ff_hevc_rem_intra_luma_pred_mode_decode(HEVCContext *s);
986int ff_hevc_intra_chroma_pred_mode_decode(HEVCContext *s);
987int ff_hevc_merge_idx_decode(HEVCContext *s);
988int ff_hevc_merge_flag_decode(HEVCContext *s);
989int ff_hevc_inter_pred_idc_decode(HEVCContext *s, int nPbW, int nPbH);
990int ff_hevc_ref_idx_lx_decode(HEVCContext *s, int num_ref_idx_lx);
991int ff_hevc_mvp_lx_flag_decode(HEVCContext *s);
992int ff_hevc_no_residual_syntax_flag_decode(HEVCContext *s);
993int ff_hevc_split_transform_flag_decode(HEVCContext *s, int log2_trafo_size);
994int ff_hevc_cbf_cb_cr_decode(HEVCContext *s, int trafo_depth);
995int ff_hevc_cbf_luma_decode(HEVCContext *s, int trafo_depth);
996int ff_hevc_log2_res_scale_abs(HEVCContext *s, int idx);
997int ff_hevc_res_scale_sign_flag(HEVCContext *s, int idx);
998
999/**
1000 * Get the number of candidate references for the current frame.
1001 */
1002int ff_hevc_frame_nb_refs(HEVCContext *s);
1003
1004int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc);
1005
1006/**
1007 * Find next frame in output order and put a reference to it in frame.
1008 * @return 1 if a frame was output, 0 otherwise
1009 */
1010int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush);
1011
1012void ff_hevc_bump_frame(HEVCContext *s);
1013
1014void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags);
1015
1016void ff_hevc_set_neighbour_available(HEVCContext *s, int x0, int y0,
1017 int nPbW, int nPbH);
1018void ff_hevc_luma_mv_merge_mode(HEVCContext *s, int x0, int y0,
1019 int nPbW, int nPbH, int log2_cb_size,
1020 int part_idx, int merge_idx, MvField *mv);
1021void ff_hevc_luma_mv_mvp_mode(HEVCContext *s, int x0, int y0,
1022 int nPbW, int nPbH, int log2_cb_size,
1023 int part_idx, int merge_idx,
1024 MvField *mv, int mvp_lx_flag, int LX);
1025void ff_hevc_set_qPy(HEVCContext *s, int xBase, int yBase,
1026 int log2_cb_size);
1027void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0,
1028 int log2_trafo_size);
1029int ff_hevc_cu_qp_delta_sign_flag(HEVCContext *s);
1030int ff_hevc_cu_qp_delta_abs(HEVCContext *s);
1031int ff_hevc_cu_chroma_qp_offset_flag(HEVCContext *s);
1032int ff_hevc_cu_chroma_qp_offset_idx(HEVCContext *s);
1033void ff_hevc_hls_filter(HEVCContext *s, int x, int y, int ctb_size);
1034void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size);
1035void ff_hevc_hls_residual_coding(HEVCContext *s, int x0, int y0,
1036 int log2_trafo_size, enum ScanType scan_idx,
1037 int c_idx);
1038
1039void ff_hevc_hls_mvd_coding(HEVCContext *s, int x0, int y0, int log2_cb_size);
1040
1041
1042extern const uint8_t ff_hevc_qpel_extra_before[4];
1043extern const uint8_t ff_hevc_qpel_extra_after[4];
1044extern const uint8_t ff_hevc_qpel_extra[4];
1045
1046extern const uint8_t ff_hevc_diag_scan4x4_x[16];
1047extern const uint8_t ff_hevc_diag_scan4x4_y[16];
1048extern const uint8_t ff_hevc_diag_scan8x8_x[64];
1049extern const uint8_t ff_hevc_diag_scan8x8_y[64];
1050
1051#endif /* AVCODEC_HEVC_H */
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