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 199
66 #define MRG_MAX_NUM_CANDS 5
71 #define EPEL_EXTRA_BEFORE 1
72 #define EPEL_EXTRA_AFTER 2
74 #define QPEL_EXTRA_BEFORE 3
75 #define QPEL_EXTRA_AFTER 4
78 #define EDGE_EMU_BUFFER_STRIDE 80
81 * Value of the luma sample at position (x, y) in the 2D array tab.
83 #define SAMPLE(tab, x, y) ((tab)[(y) * s->sps->width + (x)])
84 #define SAMPLE_CTB(tab, x, y) ((tab)[(y) * min_cb_width + (x)])
85 #define SAMPLE_CBF(tab, x, y) ((tab)[((y) & ((1<<log2_trafo_size)-1)) * MAX_CU_SIZE + ((x) & ((1<<log2_trafo_size)-1))])
86 #define SAMPLE_CBF2(tab, x, y) ((tab)[(y) * MAX_CU_SIZE + (x)])
88 #define IS_IDR(s) ((s)->nal_unit_type == NAL_IDR_W_RADL || (s)->nal_unit_type == NAL_IDR_N_LP)
89 #define IS_BLA(s) ((s)->nal_unit_type == NAL_BLA_W_RADL || (s)->nal_unit_type == NAL_BLA_W_LP || \
90 (s)->nal_unit_type == NAL_BLA_N_LP)
91 #define IS_IRAP(s) ((s)->nal_unit_type >= 16 && (s)->nal_unit_type <= 23)
94 * Table 7-3: NAL unit type codes
147 SPLIT_CODING_UNIT_FLAG,
148 CU_TRANSQUANT_BYPASS_FLAG,
154 PREV_INTRA_LUMA_PRED_FLAG,
156 REM_INTRA_LUMA_PRED_MODE,
157 INTRA_CHROMA_PRED_MODE,
163 ABS_MVD_GREATER0_FLAG,
164 ABS_MVD_GREATER1_FLAG,
168 NO_RESIDUAL_DATA_FLAG,
169 SPLIT_TRANSFORM_FLAG,
174 EXPLICIT_RDPCM_DIR_FLAG,
175 LAST_SIGNIFICANT_COEFF_X_PREFIX,
176 LAST_SIGNIFICANT_COEFF_Y_PREFIX,
177 LAST_SIGNIFICANT_COEFF_X_SUFFIX,
178 LAST_SIGNIFICANT_COEFF_Y_SUFFIX,
179 SIGNIFICANT_COEFF_GROUP_FLAG,
180 SIGNIFICANT_COEFF_FLAG,
181 COEFF_ABS_LEVEL_GREATER1_FLAG,
182 COEFF_ABS_LEVEL_GREATER2_FLAG,
183 COEFF_ABS_LEVEL_REMAINING,
187 CU_CHROMA_QP_OFFSET_FLAG,
188 CU_CHROMA_QP_OFFSET_IDX,
279 typedef struct ShortTermRPS {
280 unsigned int num_negative_pics;
282 int32_t delta_poc[32];
286 typedef struct LongTermRPS {
292 typedef struct RefPicList {
293 struct HEVCFrame *ref[MAX_REFS];
295 int isLongTerm[MAX_REFS];
299 typedef struct RefPicListTab {
300 RefPicList refPicList[2];
303 typedef struct HEVCWindow {
313 int overscan_info_present_flag;
314 int overscan_appropriate_flag;
316 int video_signal_type_present_flag;
318 int video_full_range_flag;
319 int colour_description_present_flag;
320 uint8_t colour_primaries;
321 uint8_t transfer_characteristic;
322 uint8_t matrix_coeffs;
324 int chroma_loc_info_present_flag;
325 int chroma_sample_loc_type_top_field;
326 int chroma_sample_loc_type_bottom_field;
327 int neutra_chroma_indication_flag;
330 int frame_field_info_present_flag;
332 int default_display_window_flag;
333 HEVCWindow def_disp_win;
335 int vui_timing_info_present_flag;
336 uint32_t vui_num_units_in_tick;
337 uint32_t vui_time_scale;
338 int vui_poc_proportional_to_timing_flag;
339 int vui_num_ticks_poc_diff_one_minus1;
340 int vui_hrd_parameters_present_flag;
342 int bitstream_restriction_flag;
343 int tiles_fixed_structure_flag;
344 int motion_vectors_over_pic_boundaries_flag;
345 int restricted_ref_pic_lists_flag;
346 int min_spatial_segmentation_idc;
347 int max_bytes_per_pic_denom;
348 int max_bits_per_min_cu_denom;
349 int log2_max_mv_length_horizontal;
350 int log2_max_mv_length_vertical;
353 typedef struct PTLCommon {
354 uint8_t profile_space;
357 uint8_t profile_compatibility_flag[32];
359 uint8_t progressive_source_flag;
360 uint8_t interlaced_source_flag;
361 uint8_t non_packed_constraint_flag;
362 uint8_t frame_only_constraint_flag;
366 PTLCommon general_ptl;
367 PTLCommon sub_layer_ptl[MAX_SUB_LAYERS];
369 uint8_t sub_layer_profile_present_flag[MAX_SUB_LAYERS];
370 uint8_t sub_layer_level_present_flag[MAX_SUB_LAYERS];
373 typedef struct HEVCVPS {
374 uint8_t vps_temporal_id_nesting_flag;
376 int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1
379 int vps_sub_layer_ordering_info_present_flag;
380 unsigned int vps_max_dec_pic_buffering[MAX_SUB_LAYERS];
381 unsigned int vps_num_reorder_pics[MAX_SUB_LAYERS];
382 unsigned int vps_max_latency_increase[MAX_SUB_LAYERS];
383 int vps_max_layer_id;
384 int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1
385 uint8_t vps_timing_info_present_flag;
386 uint32_t vps_num_units_in_tick;
387 uint32_t vps_time_scale;
388 uint8_t vps_poc_proportional_to_timing_flag;
389 int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1
390 int vps_num_hrd_parameters;
393 typedef struct ScalingList {
394 /* This is a little wasteful, since sizeID 0 only needs 8 coeffs,
395 * and size ID 3 only has 2 arrays, not 6. */
396 uint8_t sl[4][6][64];
400 typedef struct HEVCSPS {
402 int chroma_format_idc;
403 uint8_t separate_colour_plane_flag;
405 ///< output (i.e. cropped) values
406 int output_width, output_height;
407 HEVCWindow output_window;
409 HEVCWindow pic_conf_win;
413 enum AVPixelFormat pix_fmt;
415 unsigned int log2_max_poc_lsb;
416 int pcm_enabled_flag;
420 int max_dec_pic_buffering;
421 int num_reorder_pics;
422 int max_latency_increase;
423 } temporal_layer[MAX_SUB_LAYERS];
428 uint8_t scaling_list_enable_flag;
429 ScalingList scaling_list;
431 unsigned int nb_st_rps;
432 ShortTermRPS st_rps[MAX_SHORT_TERM_RPS_COUNT];
434 uint8_t amp_enabled_flag;
437 uint8_t long_term_ref_pics_present_flag;
438 uint16_t lt_ref_pic_poc_lsb_sps[32];
439 uint8_t used_by_curr_pic_lt_sps_flag[32];
440 uint8_t num_long_term_ref_pics_sps;
444 uint8_t bit_depth_chroma;
445 unsigned int log2_min_pcm_cb_size;
446 unsigned int log2_max_pcm_cb_size;
447 uint8_t loop_filter_disable_flag;
449 uint8_t sps_temporal_mvp_enabled_flag;
450 uint8_t sps_strong_intra_smoothing_enable_flag;
452 unsigned int log2_min_cb_size;
453 unsigned int log2_diff_max_min_coding_block_size;
454 unsigned int log2_min_tb_size;
455 unsigned int log2_max_trafo_size;
456 unsigned int log2_ctb_size;
457 unsigned int log2_min_pu_size;
459 int max_transform_hierarchy_depth_inter;
460 int max_transform_hierarchy_depth_intra;
462 int transform_skip_rotation_enabled_flag;
463 int transform_skip_context_enabled_flag;
464 int implicit_rdpcm_enabled_flag;
465 int explicit_rdpcm_enabled_flag;
466 int intra_smoothing_disabled_flag;
467 int persistent_rice_adaptation_enabled_flag;
469 ///< coded frame dimension in various units
489 typedef struct HEVCPPS {
490 unsigned int sps_id; ///< seq_parameter_set_id
492 uint8_t sign_data_hiding_flag;
494 uint8_t cabac_init_present_flag;
496 int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1
497 int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1
498 int pic_init_qp_minus26;
500 uint8_t constrained_intra_pred_flag;
501 uint8_t transform_skip_enabled_flag;
503 uint8_t cu_qp_delta_enabled_flag;
504 int diff_cu_qp_delta_depth;
508 uint8_t pic_slice_level_chroma_qp_offsets_present_flag;
509 uint8_t weighted_pred_flag;
510 uint8_t weighted_bipred_flag;
511 uint8_t output_flag_present_flag;
512 uint8_t transquant_bypass_enable_flag;
514 uint8_t dependent_slice_segments_enabled_flag;
515 uint8_t tiles_enabled_flag;
516 uint8_t entropy_coding_sync_enabled_flag;
518 int num_tile_columns; ///< num_tile_columns_minus1 + 1
519 int num_tile_rows; ///< num_tile_rows_minus1 + 1
520 uint8_t uniform_spacing_flag;
521 uint8_t loop_filter_across_tiles_enabled_flag;
523 uint8_t seq_loop_filter_across_slices_enabled_flag;
525 uint8_t deblocking_filter_control_present_flag;
526 uint8_t deblocking_filter_override_enabled_flag;
528 int beta_offset; ///< beta_offset_div2 * 2
529 int tc_offset; ///< tc_offset_div2 * 2
531 uint8_t scaling_list_data_present_flag;
532 ScalingList scaling_list;
534 uint8_t lists_modification_present_flag;
535 int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2
536 int num_extra_slice_header_bits;
537 uint8_t slice_header_extension_present_flag;
538 uint8_t log2_max_transform_skip_block_size;
539 uint8_t cross_component_prediction_enabled_flag;
540 uint8_t chroma_qp_offset_list_enabled_flag;
541 uint8_t diff_cu_chroma_qp_offset_depth;
542 uint8_t chroma_qp_offset_list_len_minus1;
543 int8_t cb_qp_offset_list[5];
544 int8_t cr_qp_offset_list[5];
545 uint8_t log2_sao_offset_scale_luma;
546 uint8_t log2_sao_offset_scale_chroma;
548 // Inferred parameters
549 unsigned int *column_width; ///< ColumnWidth
550 unsigned int *row_height; ///< RowHeight
551 unsigned int *col_bd; ///< ColBd
552 unsigned int *row_bd; ///< RowBd
555 int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS
556 int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS
557 int *tile_id; ///< TileId
558 int *tile_pos_rs; ///< TilePosRS
559 int *min_tb_addr_zs; ///< MinTbAddrZS
560 int *min_tb_addr_zs_tab;///< MinTbAddrZS
563 typedef struct SliceHeader {
566 ///< address (in raster order) of the first block in the current slice segment
567 unsigned int slice_segment_addr;
568 ///< address (in raster order) of the first block in the current slice
569 unsigned int slice_addr;
571 enum SliceType slice_type;
573 int pic_order_cnt_lsb;
575 uint8_t first_slice_in_pic_flag;
576 uint8_t dependent_slice_segment_flag;
577 uint8_t pic_output_flag;
578 uint8_t colour_plane_id;
580 ///< RPS coded in the slice header itself is stored here
581 ShortTermRPS slice_rps;
582 const ShortTermRPS *short_term_rps;
583 LongTermRPS long_term_rps;
584 unsigned int list_entry_lx[2][32];
586 uint8_t rpl_modification_flag[2];
587 uint8_t no_output_of_prior_pics_flag;
588 uint8_t slice_temporal_mvp_enabled_flag;
590 unsigned int nb_refs[2];
592 uint8_t slice_sample_adaptive_offset_flag[3];
593 uint8_t mvd_l1_zero_flag;
595 uint8_t cabac_init_flag;
596 uint8_t disable_deblocking_filter_flag; ///< slice_header_disable_deblocking_filter_flag
597 uint8_t slice_loop_filter_across_slices_enabled_flag;
598 uint8_t collocated_list;
600 unsigned int collocated_ref_idx;
603 int slice_cb_qp_offset;
604 int slice_cr_qp_offset;
606 uint8_t cu_chroma_qp_offset_enabled_flag;
608 int beta_offset; ///< beta_offset_div2 * 2
609 int tc_offset; ///< tc_offset_div2 * 2
611 unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand
613 int *entry_point_offset;
616 int num_entry_point_offsets;
620 uint8_t luma_log2_weight_denom;
621 int16_t chroma_log2_weight_denom;
623 int16_t luma_weight_l0[16];
624 int16_t chroma_weight_l0[16][2];
625 int16_t chroma_weight_l1[16][2];
626 int16_t luma_weight_l1[16];
628 int16_t luma_offset_l0[16];
629 int16_t chroma_offset_l0[16][2];
631 int16_t luma_offset_l1[16];
632 int16_t chroma_offset_l1[16][2];
634 int slice_ctb_addr_rs;
637 typedef struct CodingTree {
638 int depth; ///< ctDepth
641 typedef struct CodingUnit {
645 enum PredMode pred_mode; ///< PredMode
646 enum PartMode part_mode; ///< PartMode
648 uint8_t rqt_root_cbf;
652 // Inferred parameters
653 uint8_t intra_split_flag; ///< IntraSplitFlag
654 uint8_t max_trafo_depth; ///< MaxTrafoDepth
655 uint8_t cu_transquant_bypass_flag;
659 int16_t x; ///< horizontal component of motion vector
660 int16_t y; ///< vertical component of motion vector
663 typedef struct MvField {
664 DECLARE_ALIGNED(4, Mv, mv)[2];
669 typedef struct NeighbourAvailable {
670 int cand_bottom_left;
675 int cand_up_right_sap;
676 } NeighbourAvailable;
678 typedef struct PredictionUnit {
680 int rem_intra_luma_pred_mode;
681 uint8_t intra_pred_mode[4];
684 uint8_t intra_pred_mode_c[4];
685 uint8_t chroma_mode_c[4];
688 typedef struct TransformTree {
689 uint8_t cbf_cb[MAX_TRANSFORM_DEPTH][MAX_CU_SIZE * MAX_CU_SIZE];
690 uint8_t cbf_cr[MAX_TRANSFORM_DEPTH][MAX_CU_SIZE * MAX_CU_SIZE];
693 // Inferred parameters
694 uint8_t inter_split_flag;
697 typedef struct TransformUnit {
698 DECLARE_ALIGNED(32, int16_t, coeffs[2][MAX_TB_SIZE * MAX_TB_SIZE]);
703 // Inferred parameters;
705 int intra_pred_mode_c;
707 uint8_t is_cu_qp_delta_coded;
708 uint8_t is_cu_chroma_qp_offset_coded;
709 int8_t cu_qp_offset_cb;
710 int8_t cu_qp_offset_cr;
714 typedef struct DBParams {
719 #define HEVC_FRAME_FLAG_OUTPUT (1 << 0)
720 #define HEVC_FRAME_FLAG_SHORT_REF (1 << 1)
721 #define HEVC_FRAME_FLAG_LONG_REF (1 << 2)
723 typedef struct HEVCFrame {
727 RefPicList *refPicList;
728 RefPicListTab **rpl_tab;
731 struct HEVCFrame *collocated_ref;
735 AVBufferRef *tab_mvf_buf;
736 AVBufferRef *rpl_tab_buf;
737 AVBufferRef *rpl_buf;
740 * A sequence counter, so that old frames are output first
746 * A combination of HEVC_FRAME_FLAG_*
751 typedef struct HEVCNAL {
752 uint8_t *rbsp_buffer;
753 int rbsp_buffer_size;
759 typedef struct HEVCLocalContext {
760 DECLARE_ALIGNED(16, int16_t, mc_buffer[(MAX_PB_SIZE + 7) * MAX_PB_SIZE]);
761 uint8_t cabac_state[HEVC_CONTEXTS];
763 uint8_t stat_coeff[4];
765 uint8_t first_qp_group;
778 uint8_t ctb_left_flag;
780 uint8_t ctb_up_right_flag;
781 uint8_t ctb_up_left_flag;
784 /* +7 is for subpixel interpolation, *2 for high bit depths */
785 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
786 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer2)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
791 NeighbourAvailable na;
793 uint8_t slice_or_tiles_left_boundary;
794 uint8_t slice_or_tiles_up_boundary;
797 typedef struct HEVCContext {
798 const AVClass *c; // needed by private avoptions
799 AVCodecContext *avctx;
801 struct HEVCContext *sList[MAX_NB_THREADS];
803 HEVCLocalContext *HEVClcList[MAX_NB_THREADS];
804 HEVCLocalContext *HEVClc;
806 uint8_t threads_type;
807 uint8_t threads_number;
812 uint8_t *cabac_state;
814 /** 1 if the independent slice segment header was successfully parsed */
815 uint8_t slice_initialized;
820 AVFrame *output_frame;
825 AVBufferRef *vps_list[MAX_VPS_COUNT];
826 AVBufferRef *sps_list[MAX_SPS_COUNT];
827 AVBufferRef *pps_list[MAX_PPS_COUNT];
829 AVBufferRef *current_sps;
831 AVBufferPool *tab_mvf_pool;
832 AVBufferPool *rpl_tab_pool;
834 ///< candidate references for the current frame
840 enum NALUnitType nal_unit_type;
841 int temporal_id; ///< temporal_id_plus1 - 1
846 int slice_idx; ///< number of the slice being currently decoded
847 int eos; ///< current packet contains an EOS/EOB NAL
848 int last_eos; ///< last packet contains an EOS/EOB NAL
856 HEVCDSPContext hevcdsp;
857 VideoDSPContext vdsp;
858 BswapDSPContext bdsp;
860 uint8_t *horizontal_bs;
861 uint8_t *vertical_bs;
863 int32_t *tab_slice_address;
867 uint8_t *tab_ct_depth;
871 uint8_t *cbf_luma; // cbf_luma of colocated TU
874 // CTB-level flags affecting loop filter operation
875 uint8_t *filter_slice_edges;
877 /** used on BE to byteswap the lines for checksumming */
878 uint8_t *checksum_buf;
879 int checksum_buf_size;
882 * Sequence counters for decoded and output frames, so that old
883 * frames are output first after a POC reset
888 int enable_parallel_tiles;
891 int *skipped_bytes_pos;
892 int skipped_bytes_pos_size;
894 int *skipped_bytes_nal;
895 int **skipped_bytes_pos_nal;
896 int *skipped_bytes_pos_size_nal;
903 // type of the first VCL NAL of the current frame
904 enum NALUnitType first_nal_type;
906 // for checking the frame checksums
907 struct AVMD5 *md5_ctx;
911 uint8_t context_initialized;
912 uint8_t is_nalff; ///< this flag is != 0 if bitstream is encapsulated
913 ///< as a format defined in 14496-15
914 int apply_defdispwin;
916 int active_seq_parameter_set_id;
918 int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
921 /** frame packing arrangement variables */
922 int sei_frame_packing_present;
923 int frame_packing_arrangement_type;
924 int content_interpretation_type;
925 int quincunx_subsampling;
927 /** display orientation */
928 int sei_display_orientation_present;
929 int sei_anticlockwise_rotation;
930 int sei_hflip, sei_vflip;
935 int ff_hevc_decode_short_term_rps(HEVCContext *s, ShortTermRPS *rps,
936 const HEVCSPS *sps, int is_slice_header);
937 int ff_hevc_decode_nal_vps(HEVCContext *s);
938 int ff_hevc_decode_nal_sps(HEVCContext *s);
939 int ff_hevc_decode_nal_pps(HEVCContext *s);
940 int ff_hevc_decode_nal_sei(HEVCContext *s);
942 int ff_hevc_extract_rbsp(HEVCContext *s, const uint8_t *src, int length,
946 * Mark all frames in DPB as unused for reference.
948 void ff_hevc_clear_refs(HEVCContext *s);
951 * Drop all frames currently in DPB.
953 void ff_hevc_flush_dpb(HEVCContext *s);
956 * Compute POC of the current frame and return it.
958 int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb);
960 RefPicList *ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *frame,
964 * Construct the reference picture sets for the current frame.
966 int ff_hevc_frame_rps(HEVCContext *s);
969 * Construct the reference picture list(s) for the current slice.
971 int ff_hevc_slice_rpl(HEVCContext *s);
973 void ff_hevc_save_states(HEVCContext *s, int ctb_addr_ts);
974 void ff_hevc_cabac_init(HEVCContext *s, int ctb_addr_ts);
975 int ff_hevc_sao_merge_flag_decode(HEVCContext *s);
976 int ff_hevc_sao_type_idx_decode(HEVCContext *s);
977 int ff_hevc_sao_band_position_decode(HEVCContext *s);
978 int ff_hevc_sao_offset_abs_decode(HEVCContext *s);
979 int ff_hevc_sao_offset_sign_decode(HEVCContext *s);
980 int ff_hevc_sao_eo_class_decode(HEVCContext *s);
981 int ff_hevc_end_of_slice_flag_decode(HEVCContext *s);
982 int ff_hevc_cu_transquant_bypass_flag_decode(HEVCContext *s);
983 int ff_hevc_skip_flag_decode(HEVCContext *s, int x0, int y0,
985 int ff_hevc_pred_mode_decode(HEVCContext *s);
986 int ff_hevc_split_coding_unit_flag_decode(HEVCContext *s, int ct_depth,
988 int ff_hevc_part_mode_decode(HEVCContext *s, int log2_cb_size);
989 int ff_hevc_pcm_flag_decode(HEVCContext *s);
990 int ff_hevc_prev_intra_luma_pred_flag_decode(HEVCContext *s);
991 int ff_hevc_mpm_idx_decode(HEVCContext *s);
992 int ff_hevc_rem_intra_luma_pred_mode_decode(HEVCContext *s);
993 int ff_hevc_intra_chroma_pred_mode_decode(HEVCContext *s);
994 int ff_hevc_merge_idx_decode(HEVCContext *s);
995 int ff_hevc_merge_flag_decode(HEVCContext *s);
996 int ff_hevc_inter_pred_idc_decode(HEVCContext *s, int nPbW, int nPbH);
997 int ff_hevc_ref_idx_lx_decode(HEVCContext *s, int num_ref_idx_lx);
998 int ff_hevc_mvp_lx_flag_decode(HEVCContext *s);
999 int ff_hevc_no_residual_syntax_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_log2_res_scale_abs(HEVCContext *s, int idx);
1004 int ff_hevc_res_scale_sign_flag(HEVCContext *s, int idx);
1007 * Get the number of candidate references for the current frame.
1009 int ff_hevc_frame_nb_refs(HEVCContext *s);
1011 int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc);
1014 * Find next frame in output order and put a reference to it in frame.
1015 * @return 1 if a frame was output, 0 otherwise
1017 int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush);
1019 void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags);
1021 void ff_hevc_set_neighbour_available(HEVCContext *s, int x0, int y0,
1022 int nPbW, int nPbH);
1023 void ff_hevc_luma_mv_merge_mode(HEVCContext *s, int x0, int y0,
1024 int nPbW, int nPbH, int log2_cb_size,
1025 int part_idx, int merge_idx, MvField *mv);
1026 void ff_hevc_luma_mv_mvp_mode(HEVCContext *s, int x0, int y0,
1027 int nPbW, int nPbH, int log2_cb_size,
1028 int part_idx, int merge_idx,
1029 MvField *mv, int mvp_lx_flag, int LX);
1030 void ff_hevc_set_qPy(HEVCContext *s, int xC, int yC, int xBase, int yBase,
1032 void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0,
1033 int log2_trafo_size);
1034 int ff_hevc_cu_qp_delta_sign_flag(HEVCContext *s);
1035 int ff_hevc_cu_qp_delta_abs(HEVCContext *s);
1036 int ff_hevc_cu_chroma_qp_offset_flag(HEVCContext *s);
1037 int ff_hevc_cu_chroma_qp_offset_idx(HEVCContext *s);
1038 void ff_hevc_hls_filter(HEVCContext *s, int x, int y, int ctb_size);
1039 void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size);
1040 void ff_hevc_hls_residual_coding(HEVCContext *s, int x0, int y0,
1041 int log2_trafo_size, enum ScanType scan_idx,
1044 void ff_hevc_hls_mvd_coding(HEVCContext *s, int x0, int y0, int log2_cb_size);
1047 extern const uint8_t ff_hevc_qpel_extra_before[4];
1048 extern const uint8_t ff_hevc_qpel_extra_after[4];
1049 extern const uint8_t ff_hevc_qpel_extra[4];
1051 extern const uint8_t ff_hevc_diag_scan4x4_x[16];
1052 extern const uint8_t ff_hevc_diag_scan4x4_y[16];
1053 extern const uint8_t ff_hevc_diag_scan8x8_x[64];
1054 extern const uint8_t ff_hevc_diag_scan8x8_y[64];
1056 #endif /* AVCODEC_HEVC_H */