4 * Copyright (C) 2012 - 2013 Guillaume Martres
6 * This file is part of Libav.
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.
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.
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
23 #ifndef AVCODEC_HEVC_H
24 #define AVCODEC_HEVC_H
29 #include "libavutil/buffer.h"
30 #include "libavutil/md5.h"
40 #define MAX_DPB_SIZE 16 // A.4.1
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
53 //TODO: check if this is really the maximum
54 #define MAX_TRANSFORM_DEPTH 5
56 #define MAX_TB_SIZE 32
57 #define MAX_PB_SIZE 64
58 #define MAX_LOG2_CTB_SIZE 6
60 #define DEFAULT_INTRA_TC_OFFSET 2
62 #define HEVC_CONTEXTS 183
64 #define MRG_MAX_NUM_CANDS 5
69 #define EPEL_EXTRA_BEFORE 1
70 #define EPEL_EXTRA_AFTER 2
74 * Value of the luma sample at position (x, y) in the 2D array tab.
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))])
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)
86 * Table 7-3: NAL unit type codes
139 SPLIT_CODING_UNIT_FLAG,
140 CU_TRANSQUANT_BYPASS_FLAG,
146 PREV_INTRA_LUMA_PRED_FLAG,
148 REM_INTRA_LUMA_PRED_MODE,
149 INTRA_CHROMA_PRED_MODE,
155 ABS_MVD_GREATER0_FLAG,
156 ABS_MVD_GREATER1_FLAG,
160 NO_RESIDUAL_DATA_FLAG,
161 SPLIT_TRANSFORM_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,
257 typedef struct ShortTermRPS {
258 int num_negative_pics;
260 int32_t delta_poc[32];
264 typedef struct LongTermRPS {
270 typedef struct RefPicList {
271 struct HEVCFrame *ref[MAX_REFS];
273 int isLongTerm[MAX_REFS];
277 typedef struct RefPicListTab {
278 RefPicList refPicList[2];
281 typedef struct HEVCWindow {
291 int overscan_info_present_flag;
292 int overscan_appropriate_flag;
294 int video_signal_type_present_flag;
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;
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;
308 int frame_field_info_present_flag;
310 int default_display_window_flag;
311 HEVCWindow def_disp_win;
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;
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;
332 int general_profile_space;
333 uint8_t general_tier_flag;
334 int general_profile_idc;
335 int general_profile_compatibility_flag[32];
336 int general_level_idc;
338 uint8_t sub_layer_profile_present_flag[MAX_SUB_LAYERS];
339 uint8_t sub_layer_level_present_flag[MAX_SUB_LAYERS];
341 int sub_layer_profile_space[MAX_SUB_LAYERS];
342 uint8_t sub_layer_tier_flag[MAX_SUB_LAYERS];
343 int sub_layer_profile_idc[MAX_SUB_LAYERS];
344 uint8_t sub_layer_profile_compatibility_flags[MAX_SUB_LAYERS][32];
345 int sub_layer_level_idc[MAX_SUB_LAYERS];
348 typedef struct HEVCVPS {
349 uint8_t vps_temporal_id_nesting_flag;
351 int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1
354 int vps_sub_layer_ordering_info_present_flag;
355 unsigned int vps_max_dec_pic_buffering[MAX_SUB_LAYERS];
356 unsigned int vps_num_reorder_pics[MAX_SUB_LAYERS];
357 unsigned int vps_max_latency_increase[MAX_SUB_LAYERS];
358 int vps_max_layer_id;
359 int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1
360 uint8_t vps_timing_info_present_flag;
361 uint32_t vps_num_units_in_tick;
362 uint32_t vps_time_scale;
363 uint8_t vps_poc_proportional_to_timing_flag;
364 int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1
365 int vps_num_hrd_parameters;
368 typedef struct ScalingList {
369 /* This is a little wasteful, since sizeID 0 only needs 8 coeffs,
370 * and size ID 3 only has 2 arrays, not 6. */
371 uint8_t sl[4][6][64];
375 typedef struct HEVCSPS {
377 int chroma_format_idc;
378 uint8_t separate_colour_plane_flag;
380 ///< output (i.e. cropped) values
381 int output_width, output_height;
382 HEVCWindow output_window;
384 HEVCWindow pic_conf_win;
388 enum AVPixelFormat pix_fmt;
390 unsigned int log2_max_poc_lsb;
391 int pcm_enabled_flag;
395 int max_dec_pic_buffering;
396 int num_reorder_pics;
397 int max_latency_increase;
398 } temporal_layer[MAX_SUB_LAYERS];
403 uint8_t scaling_list_enable_flag;
404 ScalingList scaling_list;
406 unsigned int nb_st_rps;
407 ShortTermRPS st_rps[MAX_SHORT_TERM_RPS_COUNT];
409 uint8_t amp_enabled_flag;
412 uint8_t long_term_ref_pics_present_flag;
413 uint16_t lt_ref_pic_poc_lsb_sps[32];
414 uint8_t used_by_curr_pic_lt_sps_flag[32];
415 uint8_t num_long_term_ref_pics_sps;
419 unsigned int log2_min_pcm_cb_size;
420 unsigned int log2_max_pcm_cb_size;
421 uint8_t loop_filter_disable_flag;
423 uint8_t sps_temporal_mvp_enabled_flag;
424 uint8_t sps_strong_intra_smoothing_enable_flag;
426 unsigned int log2_min_cb_size;
427 unsigned int log2_diff_max_min_coding_block_size;
428 unsigned int log2_min_tb_size;
429 unsigned int log2_max_trafo_size;
430 unsigned int log2_ctb_size;
431 unsigned int log2_min_pu_size;
433 int max_transform_hierarchy_depth_inter;
434 int max_transform_hierarchy_depth_intra;
436 ///< coded frame dimension in various units
455 typedef struct HEVCPPS {
456 int sps_id; ///< seq_parameter_set_id
458 uint8_t sign_data_hiding_flag;
460 uint8_t cabac_init_present_flag;
462 int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1
463 int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1
464 int pic_init_qp_minus26;
466 uint8_t constrained_intra_pred_flag;
467 uint8_t transform_skip_enabled_flag;
469 uint8_t cu_qp_delta_enabled_flag;
470 int diff_cu_qp_delta_depth;
474 uint8_t pic_slice_level_chroma_qp_offsets_present_flag;
475 uint8_t weighted_pred_flag;
476 uint8_t weighted_bipred_flag;
477 uint8_t output_flag_present_flag;
478 uint8_t transquant_bypass_enable_flag;
480 uint8_t dependent_slice_segments_enabled_flag;
481 uint8_t tiles_enabled_flag;
482 uint8_t entropy_coding_sync_enabled_flag;
484 int num_tile_columns; ///< num_tile_columns_minus1 + 1
485 int num_tile_rows; ///< num_tile_rows_minus1 + 1
486 uint8_t uniform_spacing_flag;
487 uint8_t loop_filter_across_tiles_enabled_flag;
489 uint8_t seq_loop_filter_across_slices_enabled_flag;
491 uint8_t deblocking_filter_control_present_flag;
492 uint8_t deblocking_filter_override_enabled_flag;
494 int beta_offset; ///< beta_offset_div2 * 2
495 int tc_offset; ///< tc_offset_div2 * 2
497 uint8_t scaling_list_data_present_flag;
498 ScalingList scaling_list;
500 uint8_t lists_modification_present_flag;
501 int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2
502 int num_extra_slice_header_bits;
503 uint8_t slice_header_extension_present_flag;
505 // Inferred parameters
506 int *column_width; ///< ColumnWidth
507 int *row_height; ///< RowHeight
508 int *col_bd; ///< ColBd
509 int *row_bd; ///< RowBd
512 int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS
513 int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS
514 int *tile_id; ///< TileId
515 int *tile_pos_rs; ///< TilePosRS
516 int *min_cb_addr_zs; ///< MinCbAddrZS
517 int *min_tb_addr_zs; ///< MinTbAddrZS
520 typedef struct SliceHeader {
523 ///< address (in raster order) of the first block in the current slice segment
524 unsigned int slice_segment_addr;
525 ///< address (in raster order) of the first block in the current slice
526 unsigned int slice_addr;
528 enum SliceType slice_type;
530 int pic_order_cnt_lsb;
532 uint8_t first_slice_in_pic_flag;
533 uint8_t dependent_slice_segment_flag;
534 uint8_t pic_output_flag;
535 uint8_t colour_plane_id;
537 ///< RPS coded in the slice header itself is stored here
538 ShortTermRPS slice_rps;
539 const ShortTermRPS *short_term_rps;
540 LongTermRPS long_term_rps;
541 unsigned int list_entry_lx[2][32];
543 uint8_t rpl_modification_flag[2];
544 uint8_t no_output_of_prior_pics_flag;
545 uint8_t slice_temporal_mvp_enabled_flag;
547 unsigned int nb_refs[2];
549 uint8_t slice_sample_adaptive_offset_flag[3];
550 uint8_t mvd_l1_zero_flag;
552 uint8_t cabac_init_flag;
553 uint8_t disable_deblocking_filter_flag; ///< slice_header_disable_deblocking_filter_flag
554 uint8_t slice_loop_filter_across_slices_enabled_flag;
555 uint8_t collocated_list;
557 unsigned int collocated_ref_idx;
560 int slice_cb_qp_offset;
561 int slice_cr_qp_offset;
563 int beta_offset; ///< beta_offset_div2 * 2
564 int tc_offset; ///< tc_offset_div2 * 2
566 unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand
568 int num_entry_point_offsets;
572 uint8_t luma_log2_weight_denom;
573 int16_t chroma_log2_weight_denom;
575 int16_t luma_weight_l0[16];
576 int16_t chroma_weight_l0[16][2];
577 int16_t chroma_weight_l1[16][2];
578 int16_t luma_weight_l1[16];
580 int16_t luma_offset_l0[16];
581 int16_t chroma_offset_l0[16][2];
583 int16_t luma_offset_l1[16];
584 int16_t chroma_offset_l1[16][2];
586 int slice_ctb_addr_rs;
589 typedef struct CodingTree {
590 int depth; ///< ctDepth
593 typedef struct CodingUnit {
597 enum PredMode pred_mode; ///< PredMode
598 enum PartMode part_mode; ///< PartMode
600 uint8_t rqt_root_cbf;
604 // Inferred parameters
605 uint8_t intra_split_flag; ///< IntraSplitFlag
606 uint8_t max_trafo_depth; ///< MaxTrafoDepth
607 uint8_t cu_transquant_bypass_flag;
611 int16_t x; ///< horizontal component of motion vector
612 int16_t y; ///< vertical component of motion vector
615 typedef struct MvField {
622 typedef struct NeighbourAvailable {
623 int cand_bottom_left;
628 int cand_up_right_sap;
629 } NeighbourAvailable;
631 typedef struct PredictionUnit {
633 int rem_intra_luma_pred_mode;
634 uint8_t intra_pred_mode[4];
637 uint8_t intra_pred_mode_c;
640 typedef struct TransformTree {
641 uint8_t cbf_cb[MAX_TRANSFORM_DEPTH][MAX_CU_SIZE * MAX_CU_SIZE];
642 uint8_t cbf_cr[MAX_TRANSFORM_DEPTH][MAX_CU_SIZE * MAX_CU_SIZE];
645 // Inferred parameters
646 uint8_t inter_split_flag;
649 typedef struct TransformUnit {
652 // Inferred parameters;
653 int cur_intra_pred_mode;
654 uint8_t is_cu_qp_delta_coded;
657 typedef struct SAOParams {
658 int offset_abs[3][4]; ///< sao_offset_abs
659 int offset_sign[3][4]; ///< sao_offset_sign
661 int band_position[3]; ///< sao_band_position
663 int eo_class[3]; ///< sao_eo_class
665 int offset_val[3][5]; ///<SaoOffsetVal
667 uint8_t type_idx[3]; ///< sao_type_idx
670 typedef struct DBParams {
675 #define HEVC_FRAME_FLAG_OUTPUT (1 << 0)
676 #define HEVC_FRAME_FLAG_SHORT_REF (1 << 1)
677 #define HEVC_FRAME_FLAG_LONG_REF (1 << 2)
679 typedef struct HEVCFrame {
683 RefPicList *refPicList;
684 RefPicListTab **rpl_tab;
687 struct HEVCFrame *collocated_ref;
691 AVBufferRef *tab_mvf_buf;
692 AVBufferRef *rpl_tab_buf;
693 AVBufferRef *rpl_buf;
696 * A sequence counter, so that old frames are output first
702 * A combination of HEVC_FRAME_FLAG_*
707 typedef struct HEVCNAL {
708 uint8_t *rbsp_buffer;
709 int rbsp_buffer_size;
715 typedef struct HEVCDSPContext {
716 void (*put_pcm)(uint8_t *dst, ptrdiff_t stride, int size,
717 GetBitContext *gb, int pcm_bit_depth);
719 void (*transquant_bypass[4])(uint8_t *dst, int16_t *coeffs,
722 void (*transform_skip)(uint8_t *dst, int16_t *coeffs, ptrdiff_t stride);
723 void (*transform_4x4_luma_add)(uint8_t *dst, int16_t *coeffs,
725 void (*transform_add[4])(uint8_t *dst, int16_t *coeffs, ptrdiff_t stride);
727 void (*sao_band_filter[4])(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
728 struct SAOParams *sao, int *borders,
729 int width, int height, int c_idx);
730 void (*sao_edge_filter[4])(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
731 struct SAOParams *sao, int *borders, int width,
732 int height, int c_idx, uint8_t vert_edge,
733 uint8_t horiz_edge, uint8_t diag_edge);
735 void (*put_hevc_qpel[4][4])(int16_t *dst, ptrdiff_t dststride, uint8_t *src,
736 ptrdiff_t srcstride, int width, int height,
738 void (*put_hevc_epel[2][2])(int16_t *dst, ptrdiff_t dststride, uint8_t *src,
739 ptrdiff_t srcstride, int width, int height,
740 int mx, int my, int16_t *mcbuffer);
742 void (*put_unweighted_pred)(uint8_t *dst, ptrdiff_t dststride, int16_t *src,
743 ptrdiff_t srcstride, int width, int height);
744 void (*put_weighted_pred_avg)(uint8_t *dst, ptrdiff_t dststride,
745 int16_t *src1, int16_t *src2,
746 ptrdiff_t srcstride, int width, int height);
747 void (*weighted_pred)(uint8_t denom, int16_t wlxFlag, int16_t olxFlag,
748 uint8_t *dst, ptrdiff_t dststride, int16_t *src,
749 ptrdiff_t srcstride, int width, int height);
750 void (*weighted_pred_avg)(uint8_t denom, int16_t wl0Flag, int16_t wl1Flag,
751 int16_t ol0Flag, int16_t ol1Flag, uint8_t *dst,
752 ptrdiff_t dststride, int16_t *src1, int16_t *src2,
753 ptrdiff_t srcstride, int width, int height);
755 void (*hevc_h_loop_filter_luma)(uint8_t *pix, ptrdiff_t stride,
757 uint8_t *no_p, uint8_t *no_q);
758 void (*hevc_v_loop_filter_luma)(uint8_t *pix, ptrdiff_t stride,
760 uint8_t *no_p, uint8_t *no_q);
761 void (*hevc_h_loop_filter_chroma)(uint8_t *pix, ptrdiff_t stride,
762 int *tc, uint8_t *no_p, uint8_t *no_q);
763 void (*hevc_v_loop_filter_chroma)(uint8_t *pix, ptrdiff_t stride,
764 int *tc, uint8_t *no_p, uint8_t *no_q);
765 void (*hevc_h_loop_filter_luma_c)(uint8_t *pix, ptrdiff_t stride,
767 uint8_t *no_p, uint8_t *no_q);
768 void (*hevc_v_loop_filter_luma_c)(uint8_t *pix, ptrdiff_t stride,
770 uint8_t *no_p, uint8_t *no_q);
771 void (*hevc_h_loop_filter_chroma_c)(uint8_t *pix, ptrdiff_t stride,
772 int *tc, uint8_t *no_p,
774 void (*hevc_v_loop_filter_chroma_c)(uint8_t *pix, ptrdiff_t stride,
775 int *tc, uint8_t *no_p,
781 typedef struct HEVCPredContext {
782 void (*intra_pred)(struct HEVCContext *s, int x0, int y0,
783 int log2_size, int c_idx);
785 void (*pred_planar[4])(uint8_t *src, const uint8_t *top,
786 const uint8_t *left, ptrdiff_t stride);
787 void (*pred_dc)(uint8_t *src, const uint8_t *top, const uint8_t *left,
788 ptrdiff_t stride, int log2_size, int c_idx);
789 void (*pred_angular[4])(uint8_t *src, const uint8_t *top,
790 const uint8_t *left, ptrdiff_t stride,
791 int c_idx, int mode);
794 typedef struct HEVCLocalContext {
795 DECLARE_ALIGNED(16, int16_t, mc_buffer[(MAX_PB_SIZE + 7) * MAX_PB_SIZE]);
796 uint8_t cabac_state[HEVC_CONTEXTS];
798 uint8_t first_qp_group;
809 uint8_t ctb_left_flag;
811 uint8_t ctb_up_right_flag;
812 uint8_t ctb_up_left_flag;
813 int start_of_tiles_x;
816 uint8_t *edge_emu_buffer;
817 int edge_emu_buffer_size;
821 NeighbourAvailable na;
823 uint8_t slice_or_tiles_left_boundary;
824 uint8_t slice_or_tiles_up_boundary;
827 typedef struct HEVCContext {
828 const AVClass *c; // needed by private avoptions
829 AVCodecContext *avctx;
831 HEVCLocalContext HEVClc;
833 uint8_t cabac_state[HEVC_CONTEXTS];
835 /** 1 if the independent slice segment header was successfully parsed */
836 uint8_t slice_initialized;
841 AVFrame *output_frame;
846 HEVCVPS *vps_list[MAX_VPS_COUNT];
847 AVBufferRef *sps_list[MAX_SPS_COUNT];
848 AVBufferRef *pps_list[MAX_PPS_COUNT];
850 AVBufferPool *tab_mvf_pool;
851 AVBufferPool *rpl_tab_pool;
853 ///< candidate references for the current frame
859 enum NALUnitType nal_unit_type;
860 int temporal_id; ///< temporal_id_plus1 - 1
865 int slice_idx; ///< number of the slice being currently decoded
866 int eos; ///< current packet contains an EOS/EOB NAL
874 HEVCDSPContext hevcdsp;
875 VideoDSPContext vdsp;
878 uint8_t *split_cu_flag;
879 uint8_t *horizontal_bs;
880 uint8_t *vertical_bs;
882 int32_t *tab_slice_address;
886 uint8_t *tab_ct_depth;
890 uint8_t *cbf_luma; // cbf_luma of colocated TU
893 // CTB-level flags affecting loop filter operation
894 uint8_t *filter_slice_edges;
896 /** used on BE to byteswap the lines for checksumming */
897 uint8_t *checksum_buf;
898 int checksum_buf_size;
901 * Sequence counters for decoded and output frames, so that old
902 * frames are output first after a POC reset
911 // for checking the frame checksums
912 struct AVMD5 *md5_ctx;
916 uint8_t context_initialized;
917 uint8_t is_nalff; ///< this flag is != 0 if bitstream is encapsulated
918 ///< as a format defined in 14496-15
919 int apply_defdispwin;
921 int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
925 int ff_hevc_decode_short_term_rps(HEVCContext *s, ShortTermRPS *rps,
926 const HEVCSPS *sps, int is_slice_header);
927 int ff_hevc_decode_nal_vps(HEVCContext *s);
928 int ff_hevc_decode_nal_sps(HEVCContext *s);
929 int ff_hevc_decode_nal_pps(HEVCContext *s);
930 int ff_hevc_decode_nal_sei(HEVCContext *s);
933 * Mark all frames in DPB as unused for reference.
935 void ff_hevc_clear_refs(HEVCContext *s);
938 * Drop all frames currently in DPB.
940 void ff_hevc_flush_dpb(HEVCContext *s);
943 * Compute POC of the current frame and return it.
945 int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb);
947 RefPicList *ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *frame,
951 * Construct the reference picture sets for the current frame.
953 int ff_hevc_frame_rps(HEVCContext *s);
956 * Construct the reference picture list(s) for the current slice.
958 int ff_hevc_slice_rpl(HEVCContext *s);
960 void ff_hevc_save_states(HEVCContext *s, int ctb_addr_ts);
961 void ff_hevc_cabac_init(HEVCContext *s, int ctb_addr_ts);
962 int ff_hevc_sao_merge_flag_decode(HEVCContext *s);
963 int ff_hevc_sao_type_idx_decode(HEVCContext *s);
964 int ff_hevc_sao_band_position_decode(HEVCContext *s);
965 int ff_hevc_sao_offset_abs_decode(HEVCContext *s);
966 int ff_hevc_sao_offset_sign_decode(HEVCContext *s);
967 int ff_hevc_sao_eo_class_decode(HEVCContext *s);
968 int ff_hevc_end_of_slice_flag_decode(HEVCContext *s);
969 int ff_hevc_cu_transquant_bypass_flag_decode(HEVCContext *s);
970 int ff_hevc_skip_flag_decode(HEVCContext *s, int x0, int y0,
972 int ff_hevc_pred_mode_decode(HEVCContext *s);
973 int ff_hevc_split_coding_unit_flag_decode(HEVCContext *s, int ct_depth,
975 int ff_hevc_part_mode_decode(HEVCContext *s, int log2_cb_size);
976 int ff_hevc_pcm_flag_decode(HEVCContext *s);
977 int ff_hevc_prev_intra_luma_pred_flag_decode(HEVCContext *s);
978 int ff_hevc_mpm_idx_decode(HEVCContext *s);
979 int ff_hevc_rem_intra_luma_pred_mode_decode(HEVCContext *s);
980 int ff_hevc_intra_chroma_pred_mode_decode(HEVCContext *s);
981 int ff_hevc_merge_idx_decode(HEVCContext *s);
982 int ff_hevc_merge_flag_decode(HEVCContext *s);
983 int ff_hevc_inter_pred_idc_decode(HEVCContext *s, int nPbW, int nPbH);
984 int ff_hevc_ref_idx_lx_decode(HEVCContext *s, int num_ref_idx_lx);
985 int ff_hevc_mvp_lx_flag_decode(HEVCContext *s);
986 int ff_hevc_no_residual_syntax_flag_decode(HEVCContext *s);
987 int ff_hevc_abs_mvd_greater0_flag_decode(HEVCContext *s);
988 int ff_hevc_abs_mvd_greater1_flag_decode(HEVCContext *s);
989 int ff_hevc_mvd_decode(HEVCContext *s);
990 int ff_hevc_mvd_sign_flag_decode(HEVCContext *s);
991 int ff_hevc_split_transform_flag_decode(HEVCContext *s, int log2_trafo_size);
992 int ff_hevc_cbf_cb_cr_decode(HEVCContext *s, int trafo_depth);
993 int ff_hevc_cbf_luma_decode(HEVCContext *s, int trafo_depth);
994 int ff_hevc_transform_skip_flag_decode(HEVCContext *s, int c_idx);
995 int ff_hevc_last_significant_coeff_x_prefix_decode(HEVCContext *s, int c_idx,
997 int ff_hevc_last_significant_coeff_y_prefix_decode(HEVCContext *s, int c_idx,
999 int ff_hevc_last_significant_coeff_suffix_decode(HEVCContext *s,
1000 int last_significant_coeff_prefix);
1001 int ff_hevc_significant_coeff_group_flag_decode(HEVCContext *s, int c_idx,
1003 int ff_hevc_significant_coeff_flag_decode(HEVCContext *s, int c_idx, int x_c,
1004 int y_c, int log2_trafo_size,
1005 int scan_idx, int prev_sig);
1006 int ff_hevc_coeff_abs_level_greater1_flag_decode(HEVCContext *s, int c_idx,
1008 int ff_hevc_coeff_abs_level_greater2_flag_decode(HEVCContext *s, int c_idx,
1010 int ff_hevc_coeff_abs_level_remaining(HEVCContext *s, int base_level,
1012 int ff_hevc_coeff_sign_flag(HEVCContext *s, uint8_t nb);
1015 * Get the number of candidate references for the current frame.
1017 int ff_hevc_frame_nb_refs(HEVCContext *s);
1019 int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc);
1022 * Find next frame in output order and put a reference to it in frame.
1023 * @return 1 if a frame was output, 0 otherwise
1025 int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush);
1027 void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags);
1029 void ff_hevc_set_neighbour_available(HEVCContext *s, int x0, int y0,
1030 int nPbW, int nPbH);
1031 void ff_hevc_luma_mv_merge_mode(HEVCContext *s, int x0, int y0,
1032 int nPbW, int nPbH, int log2_cb_size,
1033 int part_idx, int merge_idx, MvField *mv);
1034 void ff_hevc_luma_mv_mvp_mode(HEVCContext *s, int x0, int y0,
1035 int nPbW, int nPbH, int log2_cb_size,
1036 int part_idx, int merge_idx,
1037 MvField *mv, int mvp_lx_flag, int LX);
1038 void ff_hevc_set_qPy(HEVCContext *s, int xC, int yC, int xBase, int yBase,
1040 void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0,
1041 int log2_trafo_size,
1042 int slice_or_tiles_up_boundary,
1043 int slice_or_tiles_left_boundary);
1044 int ff_hevc_cu_qp_delta_sign_flag(HEVCContext *s);
1045 int ff_hevc_cu_qp_delta_abs(HEVCContext *s);
1046 void ff_hevc_hls_filter(HEVCContext *s, int x, int y);
1047 void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size);
1049 void ff_hevc_pps_free(HEVCPPS **ppps);
1051 void ff_hevc_pred_init(HEVCPredContext *hpc, int bit_depth);
1053 void ff_hevc_dsp_init(HEVCDSPContext *hpc, int bit_depth);
1055 extern const int8_t ff_hevc_epel_filters[7][16];
1057 extern const uint8_t ff_hevc_qpel_extra_before[4];
1058 extern const uint8_t ff_hevc_qpel_extra_after[4];
1059 extern const uint8_t ff_hevc_qpel_extra[4];
1061 extern const uint8_t ff_hevc_diag_scan4x4_x[16];
1062 extern const uint8_t ff_hevc_diag_scan4x4_y[16];
1063 extern const uint8_t ff_hevc_diag_scan8x8_x[64];
1064 extern const uint8_t ff_hevc_diag_scan8x8_y[64];
1066 #endif /* AVCODEC_HEVC_H */