4 * Copyright (C) 2012 - 2013 Guillaume Martres
6 * This file is part of FFmpeg.
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.
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.
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
23 #ifndef AVCODEC_HEVC_H
24 #define AVCODEC_HEVC_H
26 #include "libavutil/buffer.h"
27 #include "libavutil/md5.h"
39 #define MAX_DPB_SIZE 16 // A.4.1
42 #define MAX_NB_THREADS 16
43 #define SHIFT_CTB_WPP 2
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
55 //TODO: check if this is really the maximum
56 #define MAX_TRANSFORM_DEPTH 5
58 #define MAX_TB_SIZE 32
59 #define MAX_PB_SIZE 64
60 #define MAX_LOG2_CTB_SIZE 6
62 #define DEFAULT_INTRA_TC_OFFSET 2
64 #define HEVC_CONTEXTS 183
66 #define MRG_MAX_NUM_CANDS 5
71 #define EPEL_EXTRA_BEFORE 1
72 #define EPEL_EXTRA_AFTER 2
76 * Value of the luma sample at position (x, y) in the 2D array tab.
78 #define SAMPLE(tab, x, y) ((tab)[(y) * s->sps->width + (x)])
79 #define SAMPLE_CTB(tab, x, y) ((tab)[(y) * min_cb_width + (x)])
80 #define SAMPLE_CBF(tab, x, y) ((tab)[((y) & ((1<<log2_trafo_size)-1)) * MAX_CU_SIZE + ((x) & ((1<<log2_trafo_size)-1))])
82 #define IS_IDR(s) (s->nal_unit_type == NAL_IDR_W_RADL || s->nal_unit_type == NAL_IDR_N_LP)
83 #define IS_BLA(s) (s->nal_unit_type == NAL_BLA_W_RADL || s->nal_unit_type == NAL_BLA_W_LP || \
84 s->nal_unit_type == NAL_BLA_N_LP)
85 #define IS_IRAP(s) (s->nal_unit_type >= 16 && s->nal_unit_type <= 23)
88 * Table 7-3: NAL unit type codes
141 SPLIT_CODING_UNIT_FLAG,
142 CU_TRANSQUANT_BYPASS_FLAG,
148 PREV_INTRA_LUMA_PRED_FLAG,
150 REM_INTRA_LUMA_PRED_MODE,
151 INTRA_CHROMA_PRED_MODE,
157 ABS_MVD_GREATER0_FLAG,
158 ABS_MVD_GREATER1_FLAG,
162 NO_RESIDUAL_DATA_FLAG,
163 SPLIT_TRANSFORM_FLAG,
167 LAST_SIGNIFICANT_COEFF_X_PREFIX,
168 LAST_SIGNIFICANT_COEFF_Y_PREFIX,
169 LAST_SIGNIFICANT_COEFF_X_SUFFIX,
170 LAST_SIGNIFICANT_COEFF_Y_SUFFIX,
171 SIGNIFICANT_COEFF_GROUP_FLAG,
172 SIGNIFICANT_COEFF_FLAG,
173 COEFF_ABS_LEVEL_GREATER1_FLAG,
174 COEFF_ABS_LEVEL_GREATER2_FLAG,
175 COEFF_ABS_LEVEL_REMAINING,
259 typedef struct ShortTermRPS {
260 int num_negative_pics;
262 int32_t delta_poc[32];
266 typedef struct LongTermRPS {
272 typedef struct RefPicList {
273 struct HEVCFrame *ref[MAX_REFS];
275 int isLongTerm[MAX_REFS];
279 typedef struct RefPicListTab {
280 RefPicList refPicList[2];
283 typedef struct HEVCWindow {
293 int overscan_info_present_flag;
294 int overscan_appropriate_flag;
296 int video_signal_type_present_flag;
298 int video_full_range_flag;
299 int colour_description_present_flag;
300 uint8_t colour_primaries;
301 uint8_t transfer_characteristic;
302 uint8_t matrix_coeffs;
304 int chroma_loc_info_present_flag;
305 int chroma_sample_loc_type_top_field;
306 int chroma_sample_loc_type_bottom_field;
307 int neutra_chroma_indication_flag;
310 int frame_field_info_present_flag;
312 int default_display_window_flag;
313 HEVCWindow def_disp_win;
315 int vui_timing_info_present_flag;
316 uint32_t vui_num_units_in_tick;
317 uint32_t vui_time_scale;
318 int vui_poc_proportional_to_timing_flag;
319 int vui_num_ticks_poc_diff_one_minus1;
320 int vui_hrd_parameters_present_flag;
322 int bitstream_restriction_flag;
323 int tiles_fixed_structure_flag;
324 int motion_vectors_over_pic_boundaries_flag;
325 int restricted_ref_pic_lists_flag;
326 int min_spatial_segmentation_idc;
327 int max_bytes_per_pic_denom;
328 int max_bits_per_min_cu_denom;
329 int log2_max_mv_length_horizontal;
330 int log2_max_mv_length_vertical;
333 typedef struct PTLCommon {
334 uint8_t profile_space;
337 uint8_t profile_compatibility_flag[32];
339 uint8_t progressive_source_flag;
340 uint8_t interlaced_source_flag;
341 uint8_t non_packed_constraint_flag;
342 uint8_t frame_only_constraint_flag;
346 PTLCommon general_ptl;
347 PTLCommon sub_layer_ptl[MAX_SUB_LAYERS];
349 uint8_t sub_layer_profile_present_flag[MAX_SUB_LAYERS];
350 uint8_t sub_layer_level_present_flag[MAX_SUB_LAYERS];
353 typedef struct HEVCVPS {
354 uint8_t vps_temporal_id_nesting_flag;
356 int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1
359 int vps_sub_layer_ordering_info_present_flag;
360 unsigned int vps_max_dec_pic_buffering[MAX_SUB_LAYERS];
361 unsigned int vps_num_reorder_pics[MAX_SUB_LAYERS];
362 unsigned int vps_max_latency_increase[MAX_SUB_LAYERS];
363 int vps_max_layer_id;
364 int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1
365 uint8_t vps_timing_info_present_flag;
366 uint32_t vps_num_units_in_tick;
367 uint32_t vps_time_scale;
368 uint8_t vps_poc_proportional_to_timing_flag;
369 int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1
370 int vps_num_hrd_parameters;
373 typedef struct ScalingList {
374 /* This is a little wasteful, since sizeID 0 only needs 8 coeffs,
375 * and size ID 3 only has 2 arrays, not 6. */
376 uint8_t sl[4][6][64];
380 typedef struct HEVCSPS {
382 int chroma_format_idc;
383 uint8_t separate_colour_plane_flag;
385 ///< output (i.e. cropped) values
386 int output_width, output_height;
387 HEVCWindow output_window;
389 HEVCWindow pic_conf_win;
393 enum AVPixelFormat pix_fmt;
395 unsigned int log2_max_poc_lsb;
396 int pcm_enabled_flag;
400 int max_dec_pic_buffering;
401 int num_reorder_pics;
402 int max_latency_increase;
403 } temporal_layer[MAX_SUB_LAYERS];
408 uint8_t scaling_list_enable_flag;
409 ScalingList scaling_list;
411 unsigned int nb_st_rps;
412 ShortTermRPS st_rps[MAX_SHORT_TERM_RPS_COUNT];
414 uint8_t amp_enabled_flag;
417 uint8_t long_term_ref_pics_present_flag;
418 uint16_t lt_ref_pic_poc_lsb_sps[32];
419 uint8_t used_by_curr_pic_lt_sps_flag[32];
420 uint8_t num_long_term_ref_pics_sps;
424 uint8_t bit_depth_chroma;
425 unsigned int log2_min_pcm_cb_size;
426 unsigned int log2_max_pcm_cb_size;
427 uint8_t loop_filter_disable_flag;
429 uint8_t sps_temporal_mvp_enabled_flag;
430 uint8_t sps_strong_intra_smoothing_enable_flag;
432 unsigned int log2_min_cb_size;
433 unsigned int log2_diff_max_min_coding_block_size;
434 unsigned int log2_min_tb_size;
435 unsigned int log2_max_trafo_size;
436 unsigned int log2_ctb_size;
437 unsigned int log2_min_pu_size;
439 int max_transform_hierarchy_depth_inter;
440 int max_transform_hierarchy_depth_intra;
442 ///< coded frame dimension in various units
461 typedef struct HEVCPPS {
462 int sps_id; ///< seq_parameter_set_id
464 uint8_t sign_data_hiding_flag;
466 uint8_t cabac_init_present_flag;
468 int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1
469 int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1
470 int pic_init_qp_minus26;
472 uint8_t constrained_intra_pred_flag;
473 uint8_t transform_skip_enabled_flag;
475 uint8_t cu_qp_delta_enabled_flag;
476 int diff_cu_qp_delta_depth;
480 uint8_t pic_slice_level_chroma_qp_offsets_present_flag;
481 uint8_t weighted_pred_flag;
482 uint8_t weighted_bipred_flag;
483 uint8_t output_flag_present_flag;
484 uint8_t transquant_bypass_enable_flag;
486 uint8_t dependent_slice_segments_enabled_flag;
487 uint8_t tiles_enabled_flag;
488 uint8_t entropy_coding_sync_enabled_flag;
490 int num_tile_columns; ///< num_tile_columns_minus1 + 1
491 int num_tile_rows; ///< num_tile_rows_minus1 + 1
492 uint8_t uniform_spacing_flag;
493 uint8_t loop_filter_across_tiles_enabled_flag;
495 uint8_t seq_loop_filter_across_slices_enabled_flag;
497 uint8_t deblocking_filter_control_present_flag;
498 uint8_t deblocking_filter_override_enabled_flag;
500 int beta_offset; ///< beta_offset_div2 * 2
501 int tc_offset; ///< tc_offset_div2 * 2
503 uint8_t scaling_list_data_present_flag;
504 ScalingList scaling_list;
506 uint8_t lists_modification_present_flag;
507 int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2
508 int num_extra_slice_header_bits;
509 uint8_t slice_header_extension_present_flag;
511 // Inferred parameters
512 int *column_width; ///< ColumnWidth
513 int *row_height; ///< RowHeight
514 int *col_bd; ///< ColBd
515 int *row_bd; ///< RowBd
518 int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS
519 int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS
520 int *tile_id; ///< TileId
521 int *tile_pos_rs; ///< TilePosRS
522 int *min_cb_addr_zs; ///< MinCbAddrZS
523 int *min_tb_addr_zs; ///< MinTbAddrZS
526 typedef struct SliceHeader {
529 ///< address (in raster order) of the first block in the current slice segment
530 unsigned int slice_segment_addr;
531 ///< address (in raster order) of the first block in the current slice
532 unsigned int slice_addr;
534 enum SliceType slice_type;
536 int pic_order_cnt_lsb;
538 uint8_t first_slice_in_pic_flag;
539 uint8_t dependent_slice_segment_flag;
540 uint8_t pic_output_flag;
541 uint8_t colour_plane_id;
543 ///< RPS coded in the slice header itself is stored here
544 ShortTermRPS slice_rps;
545 const ShortTermRPS *short_term_rps;
546 LongTermRPS long_term_rps;
547 unsigned int list_entry_lx[2][32];
549 uint8_t rpl_modification_flag[2];
550 uint8_t no_output_of_prior_pics_flag;
551 uint8_t slice_temporal_mvp_enabled_flag;
553 unsigned int nb_refs[2];
555 uint8_t slice_sample_adaptive_offset_flag[3];
556 uint8_t mvd_l1_zero_flag;
558 uint8_t cabac_init_flag;
559 uint8_t disable_deblocking_filter_flag; ///< slice_header_disable_deblocking_filter_flag
560 uint8_t slice_loop_filter_across_slices_enabled_flag;
561 uint8_t collocated_list;
563 unsigned int collocated_ref_idx;
566 int slice_cb_qp_offset;
567 int slice_cr_qp_offset;
569 int beta_offset; ///< beta_offset_div2 * 2
570 int tc_offset; ///< tc_offset_div2 * 2
572 unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand
574 int *entry_point_offset;
577 int num_entry_point_offsets;
581 uint8_t luma_log2_weight_denom;
582 int16_t chroma_log2_weight_denom;
584 int16_t luma_weight_l0[16];
585 int16_t chroma_weight_l0[16][2];
586 int16_t chroma_weight_l1[16][2];
587 int16_t luma_weight_l1[16];
589 int16_t luma_offset_l0[16];
590 int16_t chroma_offset_l0[16][2];
592 int16_t luma_offset_l1[16];
593 int16_t chroma_offset_l1[16][2];
595 int slice_ctb_addr_rs;
598 typedef struct CodingTree {
599 int depth; ///< ctDepth
602 typedef struct CodingUnit {
606 enum PredMode pred_mode; ///< PredMode
607 enum PartMode part_mode; ///< PartMode
609 uint8_t rqt_root_cbf;
613 // Inferred parameters
614 uint8_t intra_split_flag; ///< IntraSplitFlag
615 uint8_t max_trafo_depth; ///< MaxTrafoDepth
616 uint8_t cu_transquant_bypass_flag;
620 int16_t x; ///< horizontal component of motion vector
621 int16_t y; ///< vertical component of motion vector
624 typedef struct MvField {
631 typedef struct NeighbourAvailable {
632 int cand_bottom_left;
637 int cand_up_right_sap;
638 } NeighbourAvailable;
640 typedef struct PredictionUnit {
642 int rem_intra_luma_pred_mode;
643 uint8_t intra_pred_mode[4];
646 uint8_t intra_pred_mode_c;
649 typedef struct TransformTree {
650 uint8_t cbf_cb[MAX_TRANSFORM_DEPTH][MAX_CU_SIZE * MAX_CU_SIZE];
651 uint8_t cbf_cr[MAX_TRANSFORM_DEPTH][MAX_CU_SIZE * MAX_CU_SIZE];
654 // Inferred parameters
655 uint8_t inter_split_flag;
658 typedef struct TransformUnit {
661 // Inferred parameters;
662 int cur_intra_pred_mode;
663 uint8_t is_cu_qp_delta_coded;
666 typedef struct DBParams {
671 #define HEVC_FRAME_FLAG_OUTPUT (1 << 0)
672 #define HEVC_FRAME_FLAG_SHORT_REF (1 << 1)
673 #define HEVC_FRAME_FLAG_LONG_REF (1 << 2)
675 typedef struct HEVCFrame {
679 RefPicList *refPicList;
680 RefPicListTab **rpl_tab;
683 struct HEVCFrame *collocated_ref;
687 AVBufferRef *tab_mvf_buf;
688 AVBufferRef *rpl_tab_buf;
689 AVBufferRef *rpl_buf;
692 * A sequence counter, so that old frames are output first
698 * A combination of HEVC_FRAME_FLAG_*
703 typedef struct HEVCNAL {
704 uint8_t *rbsp_buffer;
705 int rbsp_buffer_size;
711 typedef struct HEVCLocalContext {
712 DECLARE_ALIGNED(16, int16_t, mc_buffer[(MAX_PB_SIZE + 7) * MAX_PB_SIZE]);
713 uint8_t cabac_state[HEVC_CONTEXTS];
715 uint8_t first_qp_group;
726 uint8_t ctb_left_flag;
728 uint8_t ctb_up_right_flag;
729 uint8_t ctb_up_left_flag;
730 int start_of_tiles_x;
733 uint8_t *edge_emu_buffer;
734 int edge_emu_buffer_size;
738 NeighbourAvailable na;
740 uint8_t slice_or_tiles_left_boundary;
741 uint8_t slice_or_tiles_up_boundary;
744 typedef struct HEVCContext {
745 const AVClass *c; // needed by private avoptions
746 AVCodecContext *avctx;
748 struct HEVCContext *sList[MAX_NB_THREADS];
750 HEVCLocalContext *HEVClcList[MAX_NB_THREADS];
751 HEVCLocalContext *HEVClc;
753 uint8_t threads_type;
754 uint8_t threads_number;
759 uint8_t *cabac_state;
761 /** 1 if the independent slice segment header was successfully parsed */
762 uint8_t slice_initialized;
767 AVFrame *output_frame;
772 AVBufferRef *vps_list[MAX_VPS_COUNT];
773 AVBufferRef *sps_list[MAX_SPS_COUNT];
774 AVBufferRef *pps_list[MAX_PPS_COUNT];
776 AVBufferPool *tab_mvf_pool;
777 AVBufferPool *rpl_tab_pool;
779 ///< candidate references for the current frame
785 enum NALUnitType nal_unit_type;
786 int temporal_id; ///< temporal_id_plus1 - 1
791 int slice_idx; ///< number of the slice being currently decoded
792 int eos; ///< current packet contains an EOS/EOB NAL
800 HEVCDSPContext hevcdsp;
801 VideoDSPContext vdsp;
804 uint8_t *split_cu_flag;
805 uint8_t *horizontal_bs;
806 uint8_t *vertical_bs;
808 int32_t *tab_slice_address;
812 uint8_t *tab_ct_depth;
816 uint8_t *cbf_luma; // cbf_luma of colocated TU
819 // CTB-level flags affecting loop filter operation
820 uint8_t *filter_slice_edges;
822 /** used on BE to byteswap the lines for checksumming */
823 uint8_t *checksum_buf;
824 int checksum_buf_size;
827 * Sequence counters for decoded and output frames, so that old
828 * frames are output first after a POC reset
833 int enable_parallel_tiles;
836 int *skipped_bytes_pos;
837 int skipped_bytes_pos_size;
839 int *skipped_bytes_nal;
840 int **skipped_bytes_pos_nal;
841 int *skipped_bytes_pos_size_nal;
849 // for checking the frame checksums
850 struct AVMD5 *md5_ctx;
854 uint8_t context_initialized;
855 uint8_t is_nalff; ///< this flag is != 0 if bitstream is encapsulated
856 ///< as a format defined in 14496-15
857 int apply_defdispwin;
859 int active_seq_parameter_set_id;
861 int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
864 /** frame packing arrangement variables */
865 int sei_frame_packing_present;
866 int frame_packing_arrangement_type;
867 int content_interpretation_type;
868 int quincunx_subsampling;
873 int ff_hevc_decode_short_term_rps(HEVCContext *s, ShortTermRPS *rps,
874 const HEVCSPS *sps, int is_slice_header);
875 int ff_hevc_decode_nal_vps(HEVCContext *s);
876 int ff_hevc_decode_nal_sps(HEVCContext *s);
877 int ff_hevc_decode_nal_pps(HEVCContext *s);
878 int ff_hevc_decode_nal_sei(HEVCContext *s);
880 int ff_hevc_extract_rbsp(HEVCContext *s, const uint8_t *src, int length,
884 * Mark all frames in DPB as unused for reference.
886 void ff_hevc_clear_refs(HEVCContext *s);
889 * Drop all frames currently in DPB.
891 void ff_hevc_flush_dpb(HEVCContext *s);
894 * Compute POC of the current frame and return it.
896 int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb);
898 RefPicList *ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *frame,
902 * Construct the reference picture sets for the current frame.
904 int ff_hevc_frame_rps(HEVCContext *s);
907 * Construct the reference picture list(s) for the current slice.
909 int ff_hevc_slice_rpl(HEVCContext *s);
911 void ff_hevc_save_states(HEVCContext *s, int ctb_addr_ts);
912 void ff_hevc_cabac_init(HEVCContext *s, int ctb_addr_ts);
913 int ff_hevc_sao_merge_flag_decode(HEVCContext *s);
914 int ff_hevc_sao_type_idx_decode(HEVCContext *s);
915 int ff_hevc_sao_band_position_decode(HEVCContext *s);
916 int ff_hevc_sao_offset_abs_decode(HEVCContext *s);
917 int ff_hevc_sao_offset_sign_decode(HEVCContext *s);
918 int ff_hevc_sao_eo_class_decode(HEVCContext *s);
919 int ff_hevc_end_of_slice_flag_decode(HEVCContext *s);
920 int ff_hevc_cu_transquant_bypass_flag_decode(HEVCContext *s);
921 int ff_hevc_skip_flag_decode(HEVCContext *s, int x0, int y0,
923 int ff_hevc_pred_mode_decode(HEVCContext *s);
924 int ff_hevc_split_coding_unit_flag_decode(HEVCContext *s, int ct_depth,
926 int ff_hevc_part_mode_decode(HEVCContext *s, int log2_cb_size);
927 int ff_hevc_pcm_flag_decode(HEVCContext *s);
928 int ff_hevc_prev_intra_luma_pred_flag_decode(HEVCContext *s);
929 int ff_hevc_mpm_idx_decode(HEVCContext *s);
930 int ff_hevc_rem_intra_luma_pred_mode_decode(HEVCContext *s);
931 int ff_hevc_intra_chroma_pred_mode_decode(HEVCContext *s);
932 int ff_hevc_merge_idx_decode(HEVCContext *s);
933 int ff_hevc_merge_flag_decode(HEVCContext *s);
934 int ff_hevc_inter_pred_idc_decode(HEVCContext *s, int nPbW, int nPbH);
935 int ff_hevc_ref_idx_lx_decode(HEVCContext *s, int num_ref_idx_lx);
936 int ff_hevc_mvp_lx_flag_decode(HEVCContext *s);
937 int ff_hevc_no_residual_syntax_flag_decode(HEVCContext *s);
938 int ff_hevc_split_transform_flag_decode(HEVCContext *s, int log2_trafo_size);
939 int ff_hevc_cbf_cb_cr_decode(HEVCContext *s, int trafo_depth);
940 int ff_hevc_cbf_luma_decode(HEVCContext *s, int trafo_depth);
941 int ff_hevc_transform_skip_flag_decode(HEVCContext *s, int c_idx);
944 * Get the number of candidate references for the current frame.
946 int ff_hevc_frame_nb_refs(HEVCContext *s);
948 int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc);
951 * Find next frame in output order and put a reference to it in frame.
952 * @return 1 if a frame was output, 0 otherwise
954 int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush);
956 void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags);
958 void ff_hevc_set_neighbour_available(HEVCContext *s, int x0, int y0,
960 void ff_hevc_luma_mv_merge_mode(HEVCContext *s, int x0, int y0,
961 int nPbW, int nPbH, int log2_cb_size,
962 int part_idx, int merge_idx, MvField *mv);
963 void ff_hevc_luma_mv_mvp_mode(HEVCContext *s, int x0, int y0,
964 int nPbW, int nPbH, int log2_cb_size,
965 int part_idx, int merge_idx,
966 MvField *mv, int mvp_lx_flag, int LX);
967 void ff_hevc_set_qPy(HEVCContext *s, int xC, int yC, int xBase, int yBase,
969 void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0,
971 int slice_or_tiles_up_boundary,
972 int slice_or_tiles_left_boundary);
973 int ff_hevc_cu_qp_delta_sign_flag(HEVCContext *s);
974 int ff_hevc_cu_qp_delta_abs(HEVCContext *s);
975 void ff_hevc_hls_filter(HEVCContext *s, int x, int y);
976 void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size);
977 void ff_hevc_hls_residual_coding(HEVCContext *s, int x0, int y0,
978 int log2_trafo_size, enum ScanType scan_idx,
981 void ff_hevc_hls_mvd_coding(HEVCContext *s, int x0, int y0, int log2_cb_size);
984 extern const uint8_t ff_hevc_qpel_extra_before[4];
985 extern const uint8_t ff_hevc_qpel_extra_after[4];
986 extern const uint8_t ff_hevc_qpel_extra[4];
988 extern const uint8_t ff_hevc_diag_scan4x4_x[16];
989 extern const uint8_t ff_hevc_diag_scan4x4_y[16];
990 extern const uint8_t ff_hevc_diag_scan8x8_x[64];
991 extern const uint8_t ff_hevc_diag_scan8x8_y[64];
993 #endif /* AVCODEC_HEVC_H */