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)])
86 #define IS_IDR(s) ((s)->nal_unit_type == NAL_IDR_W_RADL || (s)->nal_unit_type == NAL_IDR_N_LP)
87 #define IS_BLA(s) ((s)->nal_unit_type == NAL_BLA_W_RADL || (s)->nal_unit_type == NAL_BLA_W_LP || \
88 (s)->nal_unit_type == NAL_BLA_N_LP)
89 #define IS_IRAP(s) ((s)->nal_unit_type >= 16 && (s)->nal_unit_type <= 23)
92 * Table 7-3: NAL unit type codes
145 SPLIT_CODING_UNIT_FLAG,
146 CU_TRANSQUANT_BYPASS_FLAG,
152 PREV_INTRA_LUMA_PRED_FLAG,
154 REM_INTRA_LUMA_PRED_MODE,
155 INTRA_CHROMA_PRED_MODE,
161 ABS_MVD_GREATER0_FLAG,
162 ABS_MVD_GREATER1_FLAG,
166 NO_RESIDUAL_DATA_FLAG,
167 SPLIT_TRANSFORM_FLAG,
172 EXPLICIT_RDPCM_DIR_FLAG,
173 LAST_SIGNIFICANT_COEFF_X_PREFIX,
174 LAST_SIGNIFICANT_COEFF_Y_PREFIX,
175 LAST_SIGNIFICANT_COEFF_X_SUFFIX,
176 LAST_SIGNIFICANT_COEFF_Y_SUFFIX,
177 SIGNIFICANT_COEFF_GROUP_FLAG,
178 SIGNIFICANT_COEFF_FLAG,
179 COEFF_ABS_LEVEL_GREATER1_FLAG,
180 COEFF_ABS_LEVEL_GREATER2_FLAG,
181 COEFF_ABS_LEVEL_REMAINING,
185 CU_CHROMA_QP_OFFSET_FLAG,
186 CU_CHROMA_QP_OFFSET_IDX,
277 typedef struct ShortTermRPS {
278 unsigned int num_negative_pics;
280 int32_t delta_poc[32];
284 typedef struct LongTermRPS {
290 typedef struct RefPicList {
291 struct HEVCFrame *ref[MAX_REFS];
293 int isLongTerm[MAX_REFS];
297 typedef struct RefPicListTab {
298 RefPicList refPicList[2];
301 typedef struct HEVCWindow {
311 int overscan_info_present_flag;
312 int overscan_appropriate_flag;
314 int video_signal_type_present_flag;
316 int video_full_range_flag;
317 int colour_description_present_flag;
318 uint8_t colour_primaries;
319 uint8_t transfer_characteristic;
320 uint8_t matrix_coeffs;
322 int chroma_loc_info_present_flag;
323 int chroma_sample_loc_type_top_field;
324 int chroma_sample_loc_type_bottom_field;
325 int neutra_chroma_indication_flag;
328 int frame_field_info_present_flag;
330 int default_display_window_flag;
331 HEVCWindow def_disp_win;
333 int vui_timing_info_present_flag;
334 uint32_t vui_num_units_in_tick;
335 uint32_t vui_time_scale;
336 int vui_poc_proportional_to_timing_flag;
337 int vui_num_ticks_poc_diff_one_minus1;
338 int vui_hrd_parameters_present_flag;
340 int bitstream_restriction_flag;
341 int tiles_fixed_structure_flag;
342 int motion_vectors_over_pic_boundaries_flag;
343 int restricted_ref_pic_lists_flag;
344 int min_spatial_segmentation_idc;
345 int max_bytes_per_pic_denom;
346 int max_bits_per_min_cu_denom;
347 int log2_max_mv_length_horizontal;
348 int log2_max_mv_length_vertical;
351 typedef struct PTLCommon {
352 uint8_t profile_space;
355 uint8_t profile_compatibility_flag[32];
357 uint8_t progressive_source_flag;
358 uint8_t interlaced_source_flag;
359 uint8_t non_packed_constraint_flag;
360 uint8_t frame_only_constraint_flag;
364 PTLCommon general_ptl;
365 PTLCommon sub_layer_ptl[MAX_SUB_LAYERS];
367 uint8_t sub_layer_profile_present_flag[MAX_SUB_LAYERS];
368 uint8_t sub_layer_level_present_flag[MAX_SUB_LAYERS];
371 typedef struct HEVCVPS {
372 uint8_t vps_temporal_id_nesting_flag;
374 int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1
377 int vps_sub_layer_ordering_info_present_flag;
378 unsigned int vps_max_dec_pic_buffering[MAX_SUB_LAYERS];
379 unsigned int vps_num_reorder_pics[MAX_SUB_LAYERS];
380 unsigned int vps_max_latency_increase[MAX_SUB_LAYERS];
381 int vps_max_layer_id;
382 int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1
383 uint8_t vps_timing_info_present_flag;
384 uint32_t vps_num_units_in_tick;
385 uint32_t vps_time_scale;
386 uint8_t vps_poc_proportional_to_timing_flag;
387 int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1
388 int vps_num_hrd_parameters;
391 typedef struct ScalingList {
392 /* This is a little wasteful, since sizeID 0 only needs 8 coeffs,
393 * and size ID 3 only has 2 arrays, not 6. */
394 uint8_t sl[4][6][64];
398 typedef struct HEVCSPS {
400 int chroma_format_idc;
401 uint8_t separate_colour_plane_flag;
403 ///< output (i.e. cropped) values
404 int output_width, output_height;
405 HEVCWindow output_window;
407 HEVCWindow pic_conf_win;
411 enum AVPixelFormat pix_fmt;
413 unsigned int log2_max_poc_lsb;
414 int pcm_enabled_flag;
418 int max_dec_pic_buffering;
419 int num_reorder_pics;
420 int max_latency_increase;
421 } temporal_layer[MAX_SUB_LAYERS];
426 uint8_t scaling_list_enable_flag;
427 ScalingList scaling_list;
429 unsigned int nb_st_rps;
430 ShortTermRPS st_rps[MAX_SHORT_TERM_RPS_COUNT];
432 uint8_t amp_enabled_flag;
435 uint8_t long_term_ref_pics_present_flag;
436 uint16_t lt_ref_pic_poc_lsb_sps[32];
437 uint8_t used_by_curr_pic_lt_sps_flag[32];
438 uint8_t num_long_term_ref_pics_sps;
442 uint8_t bit_depth_chroma;
443 unsigned int log2_min_pcm_cb_size;
444 unsigned int log2_max_pcm_cb_size;
445 uint8_t loop_filter_disable_flag;
447 uint8_t sps_temporal_mvp_enabled_flag;
448 uint8_t sps_strong_intra_smoothing_enable_flag;
450 unsigned int log2_min_cb_size;
451 unsigned int log2_diff_max_min_coding_block_size;
452 unsigned int log2_min_tb_size;
453 unsigned int log2_max_trafo_size;
454 unsigned int log2_ctb_size;
455 unsigned int log2_min_pu_size;
457 int max_transform_hierarchy_depth_inter;
458 int max_transform_hierarchy_depth_intra;
460 int transform_skip_rotation_enabled_flag;
461 int transform_skip_context_enabled_flag;
462 int implicit_rdpcm_enabled_flag;
463 int explicit_rdpcm_enabled_flag;
464 int intra_smoothing_disabled_flag;
465 int persistent_rice_adaptation_enabled_flag;
467 ///< coded frame dimension in various units
487 typedef struct HEVCPPS {
488 unsigned int sps_id; ///< seq_parameter_set_id
490 uint8_t sign_data_hiding_flag;
492 uint8_t cabac_init_present_flag;
494 int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1
495 int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1
496 int pic_init_qp_minus26;
498 uint8_t constrained_intra_pred_flag;
499 uint8_t transform_skip_enabled_flag;
501 uint8_t cu_qp_delta_enabled_flag;
502 int diff_cu_qp_delta_depth;
506 uint8_t pic_slice_level_chroma_qp_offsets_present_flag;
507 uint8_t weighted_pred_flag;
508 uint8_t weighted_bipred_flag;
509 uint8_t output_flag_present_flag;
510 uint8_t transquant_bypass_enable_flag;
512 uint8_t dependent_slice_segments_enabled_flag;
513 uint8_t tiles_enabled_flag;
514 uint8_t entropy_coding_sync_enabled_flag;
516 int num_tile_columns; ///< num_tile_columns_minus1 + 1
517 int num_tile_rows; ///< num_tile_rows_minus1 + 1
518 uint8_t uniform_spacing_flag;
519 uint8_t loop_filter_across_tiles_enabled_flag;
521 uint8_t seq_loop_filter_across_slices_enabled_flag;
523 uint8_t deblocking_filter_control_present_flag;
524 uint8_t deblocking_filter_override_enabled_flag;
526 int beta_offset; ///< beta_offset_div2 * 2
527 int tc_offset; ///< tc_offset_div2 * 2
529 uint8_t scaling_list_data_present_flag;
530 ScalingList scaling_list;
532 uint8_t lists_modification_present_flag;
533 int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2
534 int num_extra_slice_header_bits;
535 uint8_t slice_header_extension_present_flag;
536 uint8_t log2_max_transform_skip_block_size;
537 uint8_t cross_component_prediction_enabled_flag;
538 uint8_t chroma_qp_offset_list_enabled_flag;
539 uint8_t diff_cu_chroma_qp_offset_depth;
540 uint8_t chroma_qp_offset_list_len_minus1;
541 int8_t cb_qp_offset_list[5];
542 int8_t cr_qp_offset_list[5];
543 uint8_t log2_sao_offset_scale_luma;
544 uint8_t log2_sao_offset_scale_chroma;
546 // Inferred parameters
547 unsigned int *column_width; ///< ColumnWidth
548 unsigned int *row_height; ///< RowHeight
549 unsigned int *col_bd; ///< ColBd
550 unsigned int *row_bd; ///< RowBd
553 int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS
554 int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS
555 int *tile_id; ///< TileId
556 int *tile_pos_rs; ///< TilePosRS
557 int *min_tb_addr_zs; ///< MinTbAddrZS
558 int *min_tb_addr_zs_tab;///< MinTbAddrZS
561 typedef struct SliceHeader {
564 ///< address (in raster order) of the first block in the current slice segment
565 unsigned int slice_segment_addr;
566 ///< address (in raster order) of the first block in the current slice
567 unsigned int slice_addr;
569 enum SliceType slice_type;
571 int pic_order_cnt_lsb;
573 uint8_t first_slice_in_pic_flag;
574 uint8_t dependent_slice_segment_flag;
575 uint8_t pic_output_flag;
576 uint8_t colour_plane_id;
578 ///< RPS coded in the slice header itself is stored here
579 ShortTermRPS slice_rps;
580 const ShortTermRPS *short_term_rps;
581 LongTermRPS long_term_rps;
582 unsigned int list_entry_lx[2][32];
584 uint8_t rpl_modification_flag[2];
585 uint8_t no_output_of_prior_pics_flag;
586 uint8_t slice_temporal_mvp_enabled_flag;
588 unsigned int nb_refs[2];
590 uint8_t slice_sample_adaptive_offset_flag[3];
591 uint8_t mvd_l1_zero_flag;
593 uint8_t cabac_init_flag;
594 uint8_t disable_deblocking_filter_flag; ///< slice_header_disable_deblocking_filter_flag
595 uint8_t slice_loop_filter_across_slices_enabled_flag;
596 uint8_t collocated_list;
598 unsigned int collocated_ref_idx;
601 int slice_cb_qp_offset;
602 int slice_cr_qp_offset;
604 uint8_t cu_chroma_qp_offset_enabled_flag;
606 int beta_offset; ///< beta_offset_div2 * 2
607 int tc_offset; ///< tc_offset_div2 * 2
609 unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand
611 int *entry_point_offset;
614 int num_entry_point_offsets;
618 uint8_t luma_log2_weight_denom;
619 int16_t chroma_log2_weight_denom;
621 int16_t luma_weight_l0[16];
622 int16_t chroma_weight_l0[16][2];
623 int16_t chroma_weight_l1[16][2];
624 int16_t luma_weight_l1[16];
626 int16_t luma_offset_l0[16];
627 int16_t chroma_offset_l0[16][2];
629 int16_t luma_offset_l1[16];
630 int16_t chroma_offset_l1[16][2];
632 int slice_ctb_addr_rs;
635 typedef struct CodingTree {
636 int depth; ///< ctDepth
639 typedef struct CodingUnit {
643 enum PredMode pred_mode; ///< PredMode
644 enum PartMode part_mode; ///< PartMode
646 uint8_t rqt_root_cbf;
650 // Inferred parameters
651 uint8_t intra_split_flag; ///< IntraSplitFlag
652 uint8_t max_trafo_depth; ///< MaxTrafoDepth
653 uint8_t cu_transquant_bypass_flag;
657 int16_t x; ///< horizontal component of motion vector
658 int16_t y; ///< vertical component of motion vector
661 typedef struct MvField {
662 DECLARE_ALIGNED(4, Mv, mv)[2];
667 typedef struct NeighbourAvailable {
668 int cand_bottom_left;
673 int cand_up_right_sap;
674 } NeighbourAvailable;
676 typedef struct PredictionUnit {
678 int rem_intra_luma_pred_mode;
679 uint8_t intra_pred_mode[4];
682 uint8_t intra_pred_mode_c[4];
683 uint8_t chroma_mode_c[4];
686 typedef struct TransformUnit {
687 DECLARE_ALIGNED(32, int16_t, coeffs[2][MAX_TB_SIZE * MAX_TB_SIZE]);
692 // Inferred parameters;
694 int intra_pred_mode_c;
696 uint8_t is_cu_qp_delta_coded;
697 uint8_t is_cu_chroma_qp_offset_coded;
698 int8_t cu_qp_offset_cb;
699 int8_t cu_qp_offset_cr;
703 typedef struct DBParams {
708 #define HEVC_FRAME_FLAG_OUTPUT (1 << 0)
709 #define HEVC_FRAME_FLAG_SHORT_REF (1 << 1)
710 #define HEVC_FRAME_FLAG_LONG_REF (1 << 2)
711 #define HEVC_FRAME_FLAG_BUMPING (1 << 3)
713 typedef struct HEVCFrame {
717 RefPicList *refPicList;
718 RefPicListTab **rpl_tab;
721 struct HEVCFrame *collocated_ref;
725 AVBufferRef *tab_mvf_buf;
726 AVBufferRef *rpl_tab_buf;
727 AVBufferRef *rpl_buf;
730 * A sequence counter, so that old frames are output first
736 * A combination of HEVC_FRAME_FLAG_*
741 typedef struct HEVCNAL {
742 uint8_t *rbsp_buffer;
743 int rbsp_buffer_size;
749 typedef struct HEVCLocalContext {
750 DECLARE_ALIGNED(16, int16_t, mc_buffer[(MAX_PB_SIZE + 7) * MAX_PB_SIZE]);
751 uint8_t cabac_state[HEVC_CONTEXTS];
753 uint8_t stat_coeff[4];
755 uint8_t first_qp_group;
767 uint8_t ctb_left_flag;
769 uint8_t ctb_up_right_flag;
770 uint8_t ctb_up_left_flag;
773 /* +7 is for subpixel interpolation, *2 for high bit depths */
774 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
775 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer2)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
780 NeighbourAvailable na;
782 #define BOUNDARY_LEFT_SLICE (1 << 0)
783 #define BOUNDARY_LEFT_TILE (1 << 1)
784 #define BOUNDARY_UPPER_SLICE (1 << 2)
785 #define BOUNDARY_UPPER_TILE (1 << 3)
786 /* properties of the boundary of the current CTB for the purposes
787 * of the deblocking filter */
791 typedef struct HEVCContext {
792 const AVClass *c; // needed by private avoptions
793 AVCodecContext *avctx;
795 struct HEVCContext *sList[MAX_NB_THREADS];
797 HEVCLocalContext *HEVClcList[MAX_NB_THREADS];
798 HEVCLocalContext *HEVClc;
800 uint8_t threads_type;
801 uint8_t threads_number;
806 uint8_t *cabac_state;
808 /** 1 if the independent slice segment header was successfully parsed */
809 uint8_t slice_initialized;
814 AVFrame *output_frame;
819 AVBufferRef *vps_list[MAX_VPS_COUNT];
820 AVBufferRef *sps_list[MAX_SPS_COUNT];
821 AVBufferRef *pps_list[MAX_PPS_COUNT];
823 AVBufferRef *current_sps;
825 AVBufferPool *tab_mvf_pool;
826 AVBufferPool *rpl_tab_pool;
828 ///< candidate references for the current frame
834 enum NALUnitType nal_unit_type;
835 int temporal_id; ///< temporal_id_plus1 - 1
840 int slice_idx; ///< number of the slice being currently decoded
841 int eos; ///< current packet contains an EOS/EOB NAL
842 int last_eos; ///< last packet contains an EOS/EOB NAL
850 HEVCDSPContext hevcdsp;
851 VideoDSPContext vdsp;
852 BswapDSPContext bdsp;
854 uint8_t *horizontal_bs;
855 uint8_t *vertical_bs;
857 int32_t *tab_slice_address;
861 uint8_t *tab_ct_depth;
865 uint8_t *cbf_luma; // cbf_luma of colocated TU
868 // CTB-level flags affecting loop filter operation
869 uint8_t *filter_slice_edges;
871 /** used on BE to byteswap the lines for checksumming */
872 uint8_t *checksum_buf;
873 int checksum_buf_size;
876 * Sequence counters for decoded and output frames, so that old
877 * frames are output first after a POC reset
882 int enable_parallel_tiles;
885 int *skipped_bytes_pos;
886 int skipped_bytes_pos_size;
888 int *skipped_bytes_nal;
889 int **skipped_bytes_pos_nal;
890 int *skipped_bytes_pos_size_nal;
897 // type of the first VCL NAL of the current frame
898 enum NALUnitType first_nal_type;
900 // for checking the frame checksums
901 struct AVMD5 *md5_ctx;
905 uint8_t context_initialized;
906 uint8_t is_nalff; ///< this flag is != 0 if bitstream is encapsulated
907 ///< as a format defined in 14496-15
908 int apply_defdispwin;
910 int active_seq_parameter_set_id;
912 int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
915 /** frame packing arrangement variables */
916 int sei_frame_packing_present;
917 int frame_packing_arrangement_type;
918 int content_interpretation_type;
919 int quincunx_subsampling;
921 /** display orientation */
922 int sei_display_orientation_present;
923 int sei_anticlockwise_rotation;
924 int sei_hflip, sei_vflip;
929 int ff_hevc_decode_short_term_rps(HEVCContext *s, ShortTermRPS *rps,
930 const HEVCSPS *sps, int is_slice_header);
931 int ff_hevc_decode_nal_vps(HEVCContext *s);
932 int ff_hevc_decode_nal_sps(HEVCContext *s);
933 int ff_hevc_decode_nal_pps(HEVCContext *s);
934 int ff_hevc_decode_nal_sei(HEVCContext *s);
936 int ff_hevc_extract_rbsp(HEVCContext *s, const uint8_t *src, int length,
940 * Mark all frames in DPB as unused for reference.
942 void ff_hevc_clear_refs(HEVCContext *s);
945 * Drop all frames currently in DPB.
947 void ff_hevc_flush_dpb(HEVCContext *s);
950 * Compute POC of the current frame and return it.
952 int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb);
954 RefPicList *ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *frame,
958 * Construct the reference picture sets for the current frame.
960 int ff_hevc_frame_rps(HEVCContext *s);
963 * Construct the reference picture list(s) for the current slice.
965 int ff_hevc_slice_rpl(HEVCContext *s);
967 void ff_hevc_save_states(HEVCContext *s, int ctb_addr_ts);
968 void ff_hevc_cabac_init(HEVCContext *s, int ctb_addr_ts);
969 int ff_hevc_sao_merge_flag_decode(HEVCContext *s);
970 int ff_hevc_sao_type_idx_decode(HEVCContext *s);
971 int ff_hevc_sao_band_position_decode(HEVCContext *s);
972 int ff_hevc_sao_offset_abs_decode(HEVCContext *s);
973 int ff_hevc_sao_offset_sign_decode(HEVCContext *s);
974 int ff_hevc_sao_eo_class_decode(HEVCContext *s);
975 int ff_hevc_end_of_slice_flag_decode(HEVCContext *s);
976 int ff_hevc_cu_transquant_bypass_flag_decode(HEVCContext *s);
977 int ff_hevc_skip_flag_decode(HEVCContext *s, int x0, int y0,
979 int ff_hevc_pred_mode_decode(HEVCContext *s);
980 int ff_hevc_split_coding_unit_flag_decode(HEVCContext *s, int ct_depth,
982 int ff_hevc_part_mode_decode(HEVCContext *s, int log2_cb_size);
983 int ff_hevc_pcm_flag_decode(HEVCContext *s);
984 int ff_hevc_prev_intra_luma_pred_flag_decode(HEVCContext *s);
985 int ff_hevc_mpm_idx_decode(HEVCContext *s);
986 int ff_hevc_rem_intra_luma_pred_mode_decode(HEVCContext *s);
987 int ff_hevc_intra_chroma_pred_mode_decode(HEVCContext *s);
988 int ff_hevc_merge_idx_decode(HEVCContext *s);
989 int ff_hevc_merge_flag_decode(HEVCContext *s);
990 int ff_hevc_inter_pred_idc_decode(HEVCContext *s, int nPbW, int nPbH);
991 int ff_hevc_ref_idx_lx_decode(HEVCContext *s, int num_ref_idx_lx);
992 int ff_hevc_mvp_lx_flag_decode(HEVCContext *s);
993 int ff_hevc_no_residual_syntax_flag_decode(HEVCContext *s);
994 int ff_hevc_split_transform_flag_decode(HEVCContext *s, int log2_trafo_size);
995 int ff_hevc_cbf_cb_cr_decode(HEVCContext *s, int trafo_depth);
996 int ff_hevc_cbf_luma_decode(HEVCContext *s, int trafo_depth);
997 int ff_hevc_log2_res_scale_abs(HEVCContext *s, int idx);
998 int ff_hevc_res_scale_sign_flag(HEVCContext *s, int idx);
1001 * Get the number of candidate references for the current frame.
1003 int ff_hevc_frame_nb_refs(HEVCContext *s);
1005 int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc);
1008 * Find next frame in output order and put a reference to it in frame.
1009 * @return 1 if a frame was output, 0 otherwise
1011 int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush);
1013 void ff_hevc_bump_frame(HEVCContext *s);
1015 void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags);
1017 void ff_hevc_set_neighbour_available(HEVCContext *s, int x0, int y0,
1018 int nPbW, int nPbH);
1019 void ff_hevc_luma_mv_merge_mode(HEVCContext *s, int x0, int y0,
1020 int nPbW, int nPbH, int log2_cb_size,
1021 int part_idx, int merge_idx, MvField *mv);
1022 void ff_hevc_luma_mv_mvp_mode(HEVCContext *s, int x0, int y0,
1023 int nPbW, int nPbH, int log2_cb_size,
1024 int part_idx, int merge_idx,
1025 MvField *mv, int mvp_lx_flag, int LX);
1026 void ff_hevc_set_qPy(HEVCContext *s, int xBase, int yBase,
1028 void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0,
1029 int log2_trafo_size);
1030 int ff_hevc_cu_qp_delta_sign_flag(HEVCContext *s);
1031 int ff_hevc_cu_qp_delta_abs(HEVCContext *s);
1032 int ff_hevc_cu_chroma_qp_offset_flag(HEVCContext *s);
1033 int ff_hevc_cu_chroma_qp_offset_idx(HEVCContext *s);
1034 void ff_hevc_hls_filter(HEVCContext *s, int x, int y, int ctb_size);
1035 void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size);
1036 void ff_hevc_hls_residual_coding(HEVCContext *s, int x0, int y0,
1037 int log2_trafo_size, enum ScanType scan_idx,
1040 void ff_hevc_hls_mvd_coding(HEVCContext *s, int x0, int y0, int log2_cb_size);
1043 extern const uint8_t ff_hevc_qpel_extra_before[4];
1044 extern const uint8_t ff_hevc_qpel_extra_after[4];
1045 extern const uint8_t ff_hevc_qpel_extra[4];
1047 extern const uint8_t ff_hevc_diag_scan4x4_x[16];
1048 extern const uint8_t ff_hevc_diag_scan4x4_y[16];
1049 extern const uint8_t ff_hevc_diag_scan8x8_x[64];
1050 extern const uint8_t ff_hevc_diag_scan8x8_y[64];
1052 #endif /* AVCODEC_HEVC_H */