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 <stdatomic.h>
28 #include "libavutil/buffer.h"
29 #include "libavutil/md5.h"
36 #include "h2645_parse.h"
42 #define MAX_DPB_SIZE 16 // A.4.1
45 #define MAX_NB_THREADS 16
46 #define SHIFT_CTB_WPP 2
51 #define MAX_SUB_LAYERS 7
52 #define MAX_VPS_COUNT 16
53 #define MAX_SPS_COUNT 32
54 #define MAX_PPS_COUNT 256
55 #define MAX_SHORT_TERM_RPS_COUNT 64
56 #define MAX_CU_SIZE 128
58 //TODO: check if this is really the maximum
59 #define MAX_TRANSFORM_DEPTH 5
61 #define MAX_TB_SIZE 32
62 #define MAX_LOG2_CTB_SIZE 6
64 #define DEFAULT_INTRA_TC_OFFSET 2
66 #define HEVC_CONTEXTS 199
68 #define MRG_MAX_NUM_CANDS 5
73 #define EPEL_EXTRA_BEFORE 1
74 #define EPEL_EXTRA_AFTER 2
76 #define QPEL_EXTRA_BEFORE 3
77 #define QPEL_EXTRA_AFTER 4
80 #define EDGE_EMU_BUFFER_STRIDE 80
83 * Value of the luma sample at position (x, y) in the 2D array tab.
85 #define SAMPLE(tab, x, y) ((tab)[(y) * s->sps->width + (x)])
86 #define SAMPLE_CTB(tab, x, y) ((tab)[(y) * min_cb_width + (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 int rps_idx_num_delta_pocs;
283 int32_t delta_poc[32];
287 typedef struct LongTermRPS {
293 typedef struct RefPicList {
294 struct HEVCFrame *ref[MAX_REFS];
296 int isLongTerm[MAX_REFS];
300 typedef struct RefPicListTab {
301 RefPicList refPicList[2];
304 typedef struct HEVCWindow {
305 unsigned int left_offset;
306 unsigned int right_offset;
307 unsigned int top_offset;
308 unsigned int bottom_offset;
314 int overscan_info_present_flag;
315 int overscan_appropriate_flag;
317 int video_signal_type_present_flag;
319 int video_full_range_flag;
320 int colour_description_present_flag;
321 uint8_t colour_primaries;
322 uint8_t transfer_characteristic;
323 uint8_t matrix_coeffs;
325 int chroma_loc_info_present_flag;
326 int chroma_sample_loc_type_top_field;
327 int chroma_sample_loc_type_bottom_field;
328 int neutra_chroma_indication_flag;
331 int frame_field_info_present_flag;
333 int default_display_window_flag;
334 HEVCWindow def_disp_win;
336 int vui_timing_info_present_flag;
337 uint32_t vui_num_units_in_tick;
338 uint32_t vui_time_scale;
339 int vui_poc_proportional_to_timing_flag;
340 int vui_num_ticks_poc_diff_one_minus1;
341 int vui_hrd_parameters_present_flag;
343 int bitstream_restriction_flag;
344 int tiles_fixed_structure_flag;
345 int motion_vectors_over_pic_boundaries_flag;
346 int restricted_ref_pic_lists_flag;
347 int min_spatial_segmentation_idc;
348 int max_bytes_per_pic_denom;
349 int max_bits_per_min_cu_denom;
350 int log2_max_mv_length_horizontal;
351 int log2_max_mv_length_vertical;
354 typedef struct PTLCommon {
355 uint8_t profile_space;
358 uint8_t profile_compatibility_flag[32];
360 uint8_t progressive_source_flag;
361 uint8_t interlaced_source_flag;
362 uint8_t non_packed_constraint_flag;
363 uint8_t frame_only_constraint_flag;
367 PTLCommon general_ptl;
368 PTLCommon sub_layer_ptl[MAX_SUB_LAYERS];
370 uint8_t sub_layer_profile_present_flag[MAX_SUB_LAYERS];
371 uint8_t sub_layer_level_present_flag[MAX_SUB_LAYERS];
374 typedef struct HEVCVPS {
375 uint8_t vps_temporal_id_nesting_flag;
377 int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1
380 int vps_sub_layer_ordering_info_present_flag;
381 unsigned int vps_max_dec_pic_buffering[MAX_SUB_LAYERS];
382 unsigned int vps_num_reorder_pics[MAX_SUB_LAYERS];
383 unsigned int vps_max_latency_increase[MAX_SUB_LAYERS];
384 int vps_max_layer_id;
385 int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1
386 uint8_t vps_timing_info_present_flag;
387 uint32_t vps_num_units_in_tick;
388 uint32_t vps_time_scale;
389 uint8_t vps_poc_proportional_to_timing_flag;
390 int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1
391 int vps_num_hrd_parameters;
397 typedef struct ScalingList {
398 /* This is a little wasteful, since sizeID 0 only needs 8 coeffs,
399 * and size ID 3 only has 2 arrays, not 6. */
400 uint8_t sl[4][6][64];
404 typedef struct HEVCSPS {
406 int chroma_format_idc;
407 uint8_t separate_colour_plane_flag;
409 ///< output (i.e. cropped) values
410 int output_width, output_height;
411 HEVCWindow output_window;
413 HEVCWindow pic_conf_win;
417 enum AVPixelFormat pix_fmt;
419 unsigned int log2_max_poc_lsb;
420 int pcm_enabled_flag;
424 int max_dec_pic_buffering;
425 int num_reorder_pics;
426 int max_latency_increase;
427 } temporal_layer[MAX_SUB_LAYERS];
432 uint8_t scaling_list_enable_flag;
433 ScalingList scaling_list;
435 unsigned int nb_st_rps;
436 ShortTermRPS st_rps[MAX_SHORT_TERM_RPS_COUNT];
438 uint8_t amp_enabled_flag;
441 uint8_t long_term_ref_pics_present_flag;
442 uint16_t lt_ref_pic_poc_lsb_sps[32];
443 uint8_t used_by_curr_pic_lt_sps_flag[32];
444 uint8_t num_long_term_ref_pics_sps;
448 uint8_t bit_depth_chroma;
449 unsigned int log2_min_pcm_cb_size;
450 unsigned int log2_max_pcm_cb_size;
451 uint8_t loop_filter_disable_flag;
453 uint8_t sps_temporal_mvp_enabled_flag;
454 uint8_t sps_strong_intra_smoothing_enable_flag;
456 unsigned int log2_min_cb_size;
457 unsigned int log2_diff_max_min_coding_block_size;
458 unsigned int log2_min_tb_size;
459 unsigned int log2_max_trafo_size;
460 unsigned int log2_ctb_size;
461 unsigned int log2_min_pu_size;
463 int max_transform_hierarchy_depth_inter;
464 int max_transform_hierarchy_depth_intra;
466 int transform_skip_rotation_enabled_flag;
467 int transform_skip_context_enabled_flag;
468 int implicit_rdpcm_enabled_flag;
469 int explicit_rdpcm_enabled_flag;
470 int intra_smoothing_disabled_flag;
471 int persistent_rice_adaptation_enabled_flag;
473 ///< coded frame dimension in various units
496 typedef struct HEVCPPS {
497 unsigned int sps_id; ///< seq_parameter_set_id
499 uint8_t sign_data_hiding_flag;
501 uint8_t cabac_init_present_flag;
503 int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1
504 int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1
505 int pic_init_qp_minus26;
507 uint8_t constrained_intra_pred_flag;
508 uint8_t transform_skip_enabled_flag;
510 uint8_t cu_qp_delta_enabled_flag;
511 int diff_cu_qp_delta_depth;
515 uint8_t pic_slice_level_chroma_qp_offsets_present_flag;
516 uint8_t weighted_pred_flag;
517 uint8_t weighted_bipred_flag;
518 uint8_t output_flag_present_flag;
519 uint8_t transquant_bypass_enable_flag;
521 uint8_t dependent_slice_segments_enabled_flag;
522 uint8_t tiles_enabled_flag;
523 uint8_t entropy_coding_sync_enabled_flag;
525 int num_tile_columns; ///< num_tile_columns_minus1 + 1
526 int num_tile_rows; ///< num_tile_rows_minus1 + 1
527 uint8_t uniform_spacing_flag;
528 uint8_t loop_filter_across_tiles_enabled_flag;
530 uint8_t seq_loop_filter_across_slices_enabled_flag;
532 uint8_t deblocking_filter_control_present_flag;
533 uint8_t deblocking_filter_override_enabled_flag;
535 int beta_offset; ///< beta_offset_div2 * 2
536 int tc_offset; ///< tc_offset_div2 * 2
538 uint8_t scaling_list_data_present_flag;
539 ScalingList scaling_list;
541 uint8_t lists_modification_present_flag;
542 int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2
543 int num_extra_slice_header_bits;
544 uint8_t slice_header_extension_present_flag;
545 uint8_t log2_max_transform_skip_block_size;
546 uint8_t cross_component_prediction_enabled_flag;
547 uint8_t chroma_qp_offset_list_enabled_flag;
548 uint8_t diff_cu_chroma_qp_offset_depth;
549 uint8_t chroma_qp_offset_list_len_minus1;
550 int8_t cb_qp_offset_list[5];
551 int8_t cr_qp_offset_list[5];
552 uint8_t log2_sao_offset_scale_luma;
553 uint8_t log2_sao_offset_scale_chroma;
555 // Inferred parameters
556 unsigned int *column_width; ///< ColumnWidth
557 unsigned int *row_height; ///< RowHeight
558 unsigned int *col_bd; ///< ColBd
559 unsigned int *row_bd; ///< RowBd
562 int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS
563 int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS
564 int *tile_id; ///< TileId
565 int *tile_pos_rs; ///< TilePosRS
566 int *min_tb_addr_zs; ///< MinTbAddrZS
567 int *min_tb_addr_zs_tab;///< MinTbAddrZS
573 typedef struct HEVCParamSets {
574 AVBufferRef *vps_list[MAX_VPS_COUNT];
575 AVBufferRef *sps_list[MAX_SPS_COUNT];
576 AVBufferRef *pps_list[MAX_PPS_COUNT];
578 /* currently active parameter sets */
584 typedef struct SliceHeader {
587 ///< address (in raster order) of the first block in the current slice segment
588 unsigned int slice_segment_addr;
589 ///< address (in raster order) of the first block in the current slice
590 unsigned int slice_addr;
592 enum SliceType slice_type;
594 int pic_order_cnt_lsb;
596 uint8_t first_slice_in_pic_flag;
597 uint8_t dependent_slice_segment_flag;
598 uint8_t pic_output_flag;
599 uint8_t colour_plane_id;
601 ///< RPS coded in the slice header itself is stored here
602 int short_term_ref_pic_set_sps_flag;
603 int short_term_ref_pic_set_size;
604 ShortTermRPS slice_rps;
605 const ShortTermRPS *short_term_rps;
606 int long_term_ref_pic_set_size;
607 LongTermRPS long_term_rps;
608 unsigned int list_entry_lx[2][32];
610 uint8_t rpl_modification_flag[2];
611 uint8_t no_output_of_prior_pics_flag;
612 uint8_t slice_temporal_mvp_enabled_flag;
614 unsigned int nb_refs[2];
616 uint8_t slice_sample_adaptive_offset_flag[3];
617 uint8_t mvd_l1_zero_flag;
619 uint8_t cabac_init_flag;
620 uint8_t disable_deblocking_filter_flag; ///< slice_header_disable_deblocking_filter_flag
621 uint8_t slice_loop_filter_across_slices_enabled_flag;
622 uint8_t collocated_list;
624 unsigned int collocated_ref_idx;
627 int slice_cb_qp_offset;
628 int slice_cr_qp_offset;
630 uint8_t cu_chroma_qp_offset_enabled_flag;
632 int beta_offset; ///< beta_offset_div2 * 2
633 int tc_offset; ///< tc_offset_div2 * 2
635 unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand
637 unsigned *entry_point_offset;
640 int num_entry_point_offsets;
644 uint8_t luma_log2_weight_denom;
645 int16_t chroma_log2_weight_denom;
647 int16_t luma_weight_l0[16];
648 int16_t chroma_weight_l0[16][2];
649 int16_t chroma_weight_l1[16][2];
650 int16_t luma_weight_l1[16];
652 int16_t luma_offset_l0[16];
653 int16_t chroma_offset_l0[16][2];
655 int16_t luma_offset_l1[16];
656 int16_t chroma_offset_l1[16][2];
658 int slice_ctb_addr_rs;
661 typedef struct CodingUnit {
665 enum PredMode pred_mode; ///< PredMode
666 enum PartMode part_mode; ///< PartMode
668 // Inferred parameters
669 uint8_t intra_split_flag; ///< IntraSplitFlag
670 uint8_t max_trafo_depth; ///< MaxTrafoDepth
671 uint8_t cu_transquant_bypass_flag;
675 int16_t x; ///< horizontal component of motion vector
676 int16_t y; ///< vertical component of motion vector
679 typedef struct MvField {
680 DECLARE_ALIGNED(4, Mv, mv)[2];
685 typedef struct NeighbourAvailable {
686 int cand_bottom_left;
691 int cand_up_right_sap;
692 } NeighbourAvailable;
694 typedef struct PredictionUnit {
696 int rem_intra_luma_pred_mode;
697 uint8_t intra_pred_mode[4];
700 uint8_t intra_pred_mode_c[4];
701 uint8_t chroma_mode_c[4];
704 typedef struct TransformUnit {
709 // Inferred parameters;
711 int intra_pred_mode_c;
713 uint8_t is_cu_qp_delta_coded;
714 uint8_t is_cu_chroma_qp_offset_coded;
715 int8_t cu_qp_offset_cb;
716 int8_t cu_qp_offset_cr;
720 typedef struct DBParams {
725 #define HEVC_FRAME_FLAG_OUTPUT (1 << 0)
726 #define HEVC_FRAME_FLAG_SHORT_REF (1 << 1)
727 #define HEVC_FRAME_FLAG_LONG_REF (1 << 2)
728 #define HEVC_FRAME_FLAG_BUMPING (1 << 3)
730 typedef struct HEVCFrame {
734 RefPicList *refPicList;
735 RefPicListTab **rpl_tab;
738 struct HEVCFrame *collocated_ref;
742 AVBufferRef *tab_mvf_buf;
743 AVBufferRef *rpl_tab_buf;
744 AVBufferRef *rpl_buf;
746 AVBufferRef *hwaccel_priv_buf;
747 void *hwaccel_picture_private;
750 * A sequence counter, so that old frames are output first
756 * A combination of HEVC_FRAME_FLAG_*
761 typedef struct HEVCLocalContext {
762 uint8_t cabac_state[HEVC_CONTEXTS];
764 uint8_t stat_coeff[4];
766 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 /* The extended size between the new edge emu buffer is abused by SAO */
787 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer2)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
788 DECLARE_ALIGNED(32, int16_t, tmp [MAX_PB_SIZE * MAX_PB_SIZE]);
793 NeighbourAvailable na;
795 #define BOUNDARY_LEFT_SLICE (1 << 0)
796 #define BOUNDARY_LEFT_TILE (1 << 1)
797 #define BOUNDARY_UPPER_SLICE (1 << 2)
798 #define BOUNDARY_UPPER_TILE (1 << 3)
799 /* properties of the boundary of the current CTB for the purposes
800 * of the deblocking filter */
804 typedef struct HEVCContext {
805 const AVClass *c; // needed by private avoptions
806 AVCodecContext *avctx;
808 struct HEVCContext *sList[MAX_NB_THREADS];
810 HEVCLocalContext *HEVClcList[MAX_NB_THREADS];
811 HEVCLocalContext *HEVClc;
813 uint8_t threads_type;
814 uint8_t threads_number;
819 uint8_t *cabac_state;
821 /** 1 if the independent slice segment header was successfully parsed */
822 uint8_t slice_initialized;
825 AVFrame *output_frame;
826 uint8_t *sao_pixel_buffer_h[3];
827 uint8_t *sao_pixel_buffer_v[3];
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
854 int no_rasl_output_flag;
857 HEVCDSPContext hevcdsp;
858 VideoDSPContext vdsp;
859 BswapDSPContext bdsp;
861 uint8_t *horizontal_bs;
862 uint8_t *vertical_bs;
864 int32_t *tab_slice_address;
868 uint8_t *tab_ct_depth;
872 uint8_t *cbf_luma; // cbf_luma of colocated TU
875 // CTB-level flags affecting loop filter operation
876 uint8_t *filter_slice_edges;
878 /** used on BE to byteswap the lines for checksumming */
879 uint8_t *checksum_buf;
880 int checksum_buf_size;
883 * Sequence counters for decoded and output frames, so that old
884 * frames are output first after a POC reset
889 int enable_parallel_tiles;
895 // type of the first VCL NAL of the current frame
896 enum NALUnitType first_nal_type;
898 // for checking the frame checksums
899 struct AVMD5 *md5_ctx;
903 uint8_t context_initialized;
904 uint8_t is_nalff; ///< this flag is != 0 if bitstream is encapsulated
905 ///< as a format defined in 14496-15
906 int apply_defdispwin;
908 int active_seq_parameter_set_id;
910 int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
913 /** frame packing arrangement variables */
914 int sei_frame_packing_present;
915 int frame_packing_arrangement_type;
916 int content_interpretation_type;
917 int quincunx_subsampling;
919 /** display orientation */
920 int sei_display_orientation_present;
921 int sei_anticlockwise_rotation;
922 int sei_hflip, sei_vflip;
926 uint8_t* a53_caption;
927 int a53_caption_size;
929 /** mastering display */
930 int sei_mastering_display_info_present;
931 uint16_t display_primaries[3][2];
932 uint16_t white_point[2];
933 uint32_t max_mastering_luminance;
934 uint32_t min_mastering_luminance;
938 int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,
939 ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header);
942 * Parse the SPS from the bitstream into the provided HEVCSPS struct.
944 * @param sps_id the SPS id will be written here
945 * @param apply_defdispwin if set 1, the default display window from the VUI
946 * will be applied to the video dimensions
947 * @param vps_list if non-NULL, this function will validate that the SPS refers
950 int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
951 int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx);
953 int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx,
955 int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx,
956 HEVCParamSets *ps, int apply_defdispwin);
957 int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
959 int ff_hevc_decode_nal_sei(HEVCContext *s);
962 * Mark all frames in DPB as unused for reference.
964 void ff_hevc_clear_refs(HEVCContext *s);
967 * Drop all frames currently in DPB.
969 void ff_hevc_flush_dpb(HEVCContext *s);
972 * Compute POC of the current frame and return it.
974 int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb);
976 RefPicList *ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *frame,
980 * Construct the reference picture sets for the current frame.
982 int ff_hevc_frame_rps(HEVCContext *s);
985 * Construct the reference picture list(s) for the current slice.
987 int ff_hevc_slice_rpl(HEVCContext *s);
989 void ff_hevc_save_states(HEVCContext *s, int ctb_addr_ts);
990 void ff_hevc_cabac_init(HEVCContext *s, int ctb_addr_ts);
991 int ff_hevc_sao_merge_flag_decode(HEVCContext *s);
992 int ff_hevc_sao_type_idx_decode(HEVCContext *s);
993 int ff_hevc_sao_band_position_decode(HEVCContext *s);
994 int ff_hevc_sao_offset_abs_decode(HEVCContext *s);
995 int ff_hevc_sao_offset_sign_decode(HEVCContext *s);
996 int ff_hevc_sao_eo_class_decode(HEVCContext *s);
997 int ff_hevc_end_of_slice_flag_decode(HEVCContext *s);
998 int ff_hevc_cu_transquant_bypass_flag_decode(HEVCContext *s);
999 int ff_hevc_skip_flag_decode(HEVCContext *s, int x0, int y0,
1000 int x_cb, int y_cb);
1001 int ff_hevc_pred_mode_decode(HEVCContext *s);
1002 int ff_hevc_split_coding_unit_flag_decode(HEVCContext *s, int ct_depth,
1004 int ff_hevc_part_mode_decode(HEVCContext *s, int log2_cb_size);
1005 int ff_hevc_pcm_flag_decode(HEVCContext *s);
1006 int ff_hevc_prev_intra_luma_pred_flag_decode(HEVCContext *s);
1007 int ff_hevc_mpm_idx_decode(HEVCContext *s);
1008 int ff_hevc_rem_intra_luma_pred_mode_decode(HEVCContext *s);
1009 int ff_hevc_intra_chroma_pred_mode_decode(HEVCContext *s);
1010 int ff_hevc_merge_idx_decode(HEVCContext *s);
1011 int ff_hevc_merge_flag_decode(HEVCContext *s);
1012 int ff_hevc_inter_pred_idc_decode(HEVCContext *s, int nPbW, int nPbH);
1013 int ff_hevc_ref_idx_lx_decode(HEVCContext *s, int num_ref_idx_lx);
1014 int ff_hevc_mvp_lx_flag_decode(HEVCContext *s);
1015 int ff_hevc_no_residual_syntax_flag_decode(HEVCContext *s);
1016 int ff_hevc_split_transform_flag_decode(HEVCContext *s, int log2_trafo_size);
1017 int ff_hevc_cbf_cb_cr_decode(HEVCContext *s, int trafo_depth);
1018 int ff_hevc_cbf_luma_decode(HEVCContext *s, int trafo_depth);
1019 int ff_hevc_log2_res_scale_abs(HEVCContext *s, int idx);
1020 int ff_hevc_res_scale_sign_flag(HEVCContext *s, int idx);
1023 * Get the number of candidate references for the current frame.
1025 int ff_hevc_frame_nb_refs(HEVCContext *s);
1027 int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc);
1030 * Find next frame in output order and put a reference to it in frame.
1031 * @return 1 if a frame was output, 0 otherwise
1033 int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush);
1035 void ff_hevc_bump_frame(HEVCContext *s);
1037 void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags);
1039 void ff_hevc_set_neighbour_available(HEVCContext *s, int x0, int y0,
1040 int nPbW, int nPbH);
1041 void ff_hevc_luma_mv_merge_mode(HEVCContext *s, int x0, int y0,
1042 int nPbW, int nPbH, int log2_cb_size,
1043 int part_idx, int merge_idx, MvField *mv);
1044 void ff_hevc_luma_mv_mvp_mode(HEVCContext *s, int x0, int y0,
1045 int nPbW, int nPbH, int log2_cb_size,
1046 int part_idx, int merge_idx,
1047 MvField *mv, int mvp_lx_flag, int LX);
1048 void ff_hevc_set_qPy(HEVCContext *s, int xBase, int yBase,
1050 void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0,
1051 int log2_trafo_size);
1052 int ff_hevc_cu_qp_delta_sign_flag(HEVCContext *s);
1053 int ff_hevc_cu_qp_delta_abs(HEVCContext *s);
1054 int ff_hevc_cu_chroma_qp_offset_flag(HEVCContext *s);
1055 int ff_hevc_cu_chroma_qp_offset_idx(HEVCContext *s);
1056 void ff_hevc_hls_filter(HEVCContext *s, int x, int y, int ctb_size);
1057 void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size);
1058 void ff_hevc_hls_residual_coding(HEVCContext *s, int x0, int y0,
1059 int log2_trafo_size, enum ScanType scan_idx,
1062 void ff_hevc_hls_mvd_coding(HEVCContext *s, int x0, int y0, int log2_cb_size);
1065 int ff_hevc_encode_nal_vps(HEVCVPS *vps, unsigned int id,
1066 uint8_t *buf, int buf_size);
1069 * Reset SEI values that are stored on the Context.
1070 * e.g. Caption data that was extracted during NAL
1073 * @param s HEVCContext.
1075 void ff_hevc_reset_sei(HEVCContext *s);
1077 extern const uint8_t ff_hevc_qpel_extra_before[4];
1078 extern const uint8_t ff_hevc_qpel_extra_after[4];
1079 extern const uint8_t ff_hevc_qpel_extra[4];
1081 extern const uint8_t ff_hevc_diag_scan4x4_x[16];
1082 extern const uint8_t ff_hevc_diag_scan4x4_y[16];
1083 extern const uint8_t ff_hevc_diag_scan8x8_x[64];
1084 extern const uint8_t ff_hevc_diag_scan8x8_y[64];
1086 #endif /* AVCODEC_HEVC_H */