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_LOG2_CTB_SIZE 6
61 #define DEFAULT_INTRA_TC_OFFSET 2
63 #define HEVC_CONTEXTS 199
65 #define MRG_MAX_NUM_CANDS 5
70 #define EPEL_EXTRA_BEFORE 1
71 #define EPEL_EXTRA_AFTER 2
73 #define QPEL_EXTRA_BEFORE 3
74 #define QPEL_EXTRA_AFTER 4
77 #define EDGE_EMU_BUFFER_STRIDE 80
80 * Value of the luma sample at position (x, y) in the 2D array tab.
82 #define SAMPLE(tab, x, y) ((tab)[(y) * s->sps->width + (x)])
83 #define SAMPLE_CTB(tab, x, y) ((tab)[(y) * min_cb_width + (x)])
85 #define IS_IDR(s) ((s)->nal_unit_type == NAL_IDR_W_RADL || (s)->nal_unit_type == NAL_IDR_N_LP)
86 #define IS_BLA(s) ((s)->nal_unit_type == NAL_BLA_W_RADL || (s)->nal_unit_type == NAL_BLA_W_LP || \
87 (s)->nal_unit_type == NAL_BLA_N_LP)
88 #define IS_IRAP(s) ((s)->nal_unit_type >= 16 && (s)->nal_unit_type <= 23)
91 * Table 7-3: NAL unit type codes
144 SPLIT_CODING_UNIT_FLAG,
145 CU_TRANSQUANT_BYPASS_FLAG,
151 PREV_INTRA_LUMA_PRED_FLAG,
153 REM_INTRA_LUMA_PRED_MODE,
154 INTRA_CHROMA_PRED_MODE,
160 ABS_MVD_GREATER0_FLAG,
161 ABS_MVD_GREATER1_FLAG,
165 NO_RESIDUAL_DATA_FLAG,
166 SPLIT_TRANSFORM_FLAG,
171 EXPLICIT_RDPCM_DIR_FLAG,
172 LAST_SIGNIFICANT_COEFF_X_PREFIX,
173 LAST_SIGNIFICANT_COEFF_Y_PREFIX,
174 LAST_SIGNIFICANT_COEFF_X_SUFFIX,
175 LAST_SIGNIFICANT_COEFF_Y_SUFFIX,
176 SIGNIFICANT_COEFF_GROUP_FLAG,
177 SIGNIFICANT_COEFF_FLAG,
178 COEFF_ABS_LEVEL_GREATER1_FLAG,
179 COEFF_ABS_LEVEL_GREATER2_FLAG,
180 COEFF_ABS_LEVEL_REMAINING,
184 CU_CHROMA_QP_OFFSET_FLAG,
185 CU_CHROMA_QP_OFFSET_IDX,
276 typedef struct ShortTermRPS {
277 unsigned int num_negative_pics;
279 int rps_idx_num_delta_pocs;
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 {
302 unsigned int left_offset;
303 unsigned int right_offset;
304 unsigned int top_offset;
305 unsigned int bottom_offset;
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 HEVCParamSets {
562 AVBufferRef *vps_list[MAX_VPS_COUNT];
563 AVBufferRef *sps_list[MAX_SPS_COUNT];
564 AVBufferRef *pps_list[MAX_PPS_COUNT];
566 /* currently active parameter sets */
572 typedef struct SliceHeader {
575 ///< address (in raster order) of the first block in the current slice segment
576 unsigned int slice_segment_addr;
577 ///< address (in raster order) of the first block in the current slice
578 unsigned int slice_addr;
580 enum SliceType slice_type;
582 int pic_order_cnt_lsb;
584 uint8_t first_slice_in_pic_flag;
585 uint8_t dependent_slice_segment_flag;
586 uint8_t pic_output_flag;
587 uint8_t colour_plane_id;
589 ///< RPS coded in the slice header itself is stored here
590 int short_term_ref_pic_set_sps_flag;
591 int short_term_ref_pic_set_size;
592 ShortTermRPS slice_rps;
593 const ShortTermRPS *short_term_rps;
594 int long_term_ref_pic_set_size;
595 LongTermRPS long_term_rps;
596 unsigned int list_entry_lx[2][32];
598 uint8_t rpl_modification_flag[2];
599 uint8_t no_output_of_prior_pics_flag;
600 uint8_t slice_temporal_mvp_enabled_flag;
602 unsigned int nb_refs[2];
604 uint8_t slice_sample_adaptive_offset_flag[3];
605 uint8_t mvd_l1_zero_flag;
607 uint8_t cabac_init_flag;
608 uint8_t disable_deblocking_filter_flag; ///< slice_header_disable_deblocking_filter_flag
609 uint8_t slice_loop_filter_across_slices_enabled_flag;
610 uint8_t collocated_list;
612 unsigned int collocated_ref_idx;
615 int slice_cb_qp_offset;
616 int slice_cr_qp_offset;
618 uint8_t cu_chroma_qp_offset_enabled_flag;
620 int beta_offset; ///< beta_offset_div2 * 2
621 int tc_offset; ///< tc_offset_div2 * 2
623 unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand
625 int *entry_point_offset;
628 int num_entry_point_offsets;
632 uint8_t luma_log2_weight_denom;
633 int16_t chroma_log2_weight_denom;
635 int16_t luma_weight_l0[16];
636 int16_t chroma_weight_l0[16][2];
637 int16_t chroma_weight_l1[16][2];
638 int16_t luma_weight_l1[16];
640 int16_t luma_offset_l0[16];
641 int16_t chroma_offset_l0[16][2];
643 int16_t luma_offset_l1[16];
644 int16_t chroma_offset_l1[16][2];
646 int slice_ctb_addr_rs;
649 typedef struct CodingUnit {
653 enum PredMode pred_mode; ///< PredMode
654 enum PartMode part_mode; ///< PartMode
656 // Inferred parameters
657 uint8_t intra_split_flag; ///< IntraSplitFlag
658 uint8_t max_trafo_depth; ///< MaxTrafoDepth
659 uint8_t cu_transquant_bypass_flag;
663 int16_t x; ///< horizontal component of motion vector
664 int16_t y; ///< vertical component of motion vector
667 typedef struct MvField {
668 DECLARE_ALIGNED(4, Mv, mv)[2];
673 typedef struct NeighbourAvailable {
674 int cand_bottom_left;
679 int cand_up_right_sap;
680 } NeighbourAvailable;
682 typedef struct PredictionUnit {
684 int rem_intra_luma_pred_mode;
685 uint8_t intra_pred_mode[4];
688 uint8_t intra_pred_mode_c[4];
689 uint8_t chroma_mode_c[4];
692 typedef struct TransformUnit {
697 // Inferred parameters;
699 int intra_pred_mode_c;
701 uint8_t is_cu_qp_delta_coded;
702 uint8_t is_cu_chroma_qp_offset_coded;
703 int8_t cu_qp_offset_cb;
704 int8_t cu_qp_offset_cr;
708 typedef struct DBParams {
713 #define HEVC_FRAME_FLAG_OUTPUT (1 << 0)
714 #define HEVC_FRAME_FLAG_SHORT_REF (1 << 1)
715 #define HEVC_FRAME_FLAG_LONG_REF (1 << 2)
716 #define HEVC_FRAME_FLAG_BUMPING (1 << 3)
718 typedef struct HEVCFrame {
722 RefPicList *refPicList;
723 RefPicListTab **rpl_tab;
726 struct HEVCFrame *collocated_ref;
730 AVBufferRef *tab_mvf_buf;
731 AVBufferRef *rpl_tab_buf;
732 AVBufferRef *rpl_buf;
734 AVBufferRef *hwaccel_priv_buf;
735 void *hwaccel_picture_private;
738 * A sequence counter, so that old frames are output first
744 * A combination of HEVC_FRAME_FLAG_*
749 typedef struct HEVCNAL {
750 uint8_t *rbsp_buffer;
751 int rbsp_buffer_size;
757 const uint8_t *raw_data;
761 enum NALUnitType type;
765 int skipped_bytes_pos_size;
766 int *skipped_bytes_pos;
769 /* an input packet split into unescaped NAL units */
770 typedef struct HEVCPacket {
776 typedef struct HEVCLocalContext {
777 uint8_t cabac_state[HEVC_CONTEXTS];
779 uint8_t stat_coeff[4];
781 uint8_t first_qp_group;
793 uint8_t ctb_left_flag;
795 uint8_t ctb_up_right_flag;
796 uint8_t ctb_up_left_flag;
799 /* +7 is for subpixel interpolation, *2 for high bit depths */
800 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
801 /* The extended size between the new edge emu buffer is abused by SAO */
802 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer2)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
803 DECLARE_ALIGNED(32, int16_t, tmp [MAX_PB_SIZE * MAX_PB_SIZE]);
808 NeighbourAvailable na;
810 #define BOUNDARY_LEFT_SLICE (1 << 0)
811 #define BOUNDARY_LEFT_TILE (1 << 1)
812 #define BOUNDARY_UPPER_SLICE (1 << 2)
813 #define BOUNDARY_UPPER_TILE (1 << 3)
814 /* properties of the boundary of the current CTB for the purposes
815 * of the deblocking filter */
819 typedef struct HEVCContext {
820 const AVClass *c; // needed by private avoptions
821 AVCodecContext *avctx;
823 struct HEVCContext *sList[MAX_NB_THREADS];
825 HEVCLocalContext *HEVClcList[MAX_NB_THREADS];
826 HEVCLocalContext *HEVClc;
828 uint8_t threads_type;
829 uint8_t threads_number;
834 uint8_t *cabac_state;
836 /** 1 if the independent slice segment header was successfully parsed */
837 uint8_t slice_initialized;
840 AVFrame *output_frame;
841 uint8_t *sao_pixel_buffer_h[3];
842 uint8_t *sao_pixel_buffer_v[3];
846 AVBufferPool *tab_mvf_pool;
847 AVBufferPool *rpl_tab_pool;
849 ///< candidate references for the current frame
855 enum NALUnitType nal_unit_type;
856 int temporal_id; ///< temporal_id_plus1 - 1
861 int slice_idx; ///< number of the slice being currently decoded
862 int eos; ///< current packet contains an EOS/EOB NAL
863 int last_eos; ///< last packet contains an EOS/EOB NAL
869 int no_rasl_output_flag;
872 HEVCDSPContext hevcdsp;
873 VideoDSPContext vdsp;
874 BswapDSPContext bdsp;
876 uint8_t *horizontal_bs;
877 uint8_t *vertical_bs;
879 int32_t *tab_slice_address;
883 uint8_t *tab_ct_depth;
887 uint8_t *cbf_luma; // cbf_luma of colocated TU
890 // CTB-level flags affecting loop filter operation
891 uint8_t *filter_slice_edges;
893 /** used on BE to byteswap the lines for checksumming */
894 uint8_t *checksum_buf;
895 int checksum_buf_size;
898 * Sequence counters for decoded and output frames, so that old
899 * frames are output first after a POC reset
904 int enable_parallel_tiles;
910 // type of the first VCL NAL of the current frame
911 enum NALUnitType first_nal_type;
913 // for checking the frame checksums
914 struct AVMD5 *md5_ctx;
918 uint8_t context_initialized;
919 uint8_t is_nalff; ///< this flag is != 0 if bitstream is encapsulated
920 ///< as a format defined in 14496-15
921 int apply_defdispwin;
923 int active_seq_parameter_set_id;
925 int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
928 /** frame packing arrangement variables */
929 int sei_frame_packing_present;
930 int frame_packing_arrangement_type;
931 int content_interpretation_type;
932 int quincunx_subsampling;
934 /** display orientation */
935 int sei_display_orientation_present;
936 int sei_anticlockwise_rotation;
937 int sei_hflip, sei_vflip;
942 int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,
943 ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header);
946 * Parse the SPS from the bitstream into the provided HEVCSPS struct.
948 * @param sps_id the SPS id will be written here
949 * @param apply_defdispwin if set 1, the default display window from the VUI
950 * will be applied to the video dimensions
951 * @param vps_list if non-NULL, this function will validate that the SPS refers
954 int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
955 int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx);
957 int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx,
959 int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx,
960 HEVCParamSets *ps, int apply_defdispwin);
961 int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
963 int ff_hevc_decode_nal_sei(HEVCContext *s);
966 * Mark all frames in DPB as unused for reference.
968 void ff_hevc_clear_refs(HEVCContext *s);
971 * Drop all frames currently in DPB.
973 void ff_hevc_flush_dpb(HEVCContext *s);
976 * Compute POC of the current frame and return it.
978 int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb);
980 RefPicList *ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *frame,
984 * Construct the reference picture sets for the current frame.
986 int ff_hevc_frame_rps(HEVCContext *s);
989 * Construct the reference picture list(s) for the current slice.
991 int ff_hevc_slice_rpl(HEVCContext *s);
993 void ff_hevc_save_states(HEVCContext *s, int ctb_addr_ts);
994 void ff_hevc_cabac_init(HEVCContext *s, int ctb_addr_ts);
995 int ff_hevc_sao_merge_flag_decode(HEVCContext *s);
996 int ff_hevc_sao_type_idx_decode(HEVCContext *s);
997 int ff_hevc_sao_band_position_decode(HEVCContext *s);
998 int ff_hevc_sao_offset_abs_decode(HEVCContext *s);
999 int ff_hevc_sao_offset_sign_decode(HEVCContext *s);
1000 int ff_hevc_sao_eo_class_decode(HEVCContext *s);
1001 int ff_hevc_end_of_slice_flag_decode(HEVCContext *s);
1002 int ff_hevc_cu_transquant_bypass_flag_decode(HEVCContext *s);
1003 int ff_hevc_skip_flag_decode(HEVCContext *s, int x0, int y0,
1004 int x_cb, int y_cb);
1005 int ff_hevc_pred_mode_decode(HEVCContext *s);
1006 int ff_hevc_split_coding_unit_flag_decode(HEVCContext *s, int ct_depth,
1008 int ff_hevc_part_mode_decode(HEVCContext *s, int log2_cb_size);
1009 int ff_hevc_pcm_flag_decode(HEVCContext *s);
1010 int ff_hevc_prev_intra_luma_pred_flag_decode(HEVCContext *s);
1011 int ff_hevc_mpm_idx_decode(HEVCContext *s);
1012 int ff_hevc_rem_intra_luma_pred_mode_decode(HEVCContext *s);
1013 int ff_hevc_intra_chroma_pred_mode_decode(HEVCContext *s);
1014 int ff_hevc_merge_idx_decode(HEVCContext *s);
1015 int ff_hevc_merge_flag_decode(HEVCContext *s);
1016 int ff_hevc_inter_pred_idc_decode(HEVCContext *s, int nPbW, int nPbH);
1017 int ff_hevc_ref_idx_lx_decode(HEVCContext *s, int num_ref_idx_lx);
1018 int ff_hevc_mvp_lx_flag_decode(HEVCContext *s);
1019 int ff_hevc_no_residual_syntax_flag_decode(HEVCContext *s);
1020 int ff_hevc_split_transform_flag_decode(HEVCContext *s, int log2_trafo_size);
1021 int ff_hevc_cbf_cb_cr_decode(HEVCContext *s, int trafo_depth);
1022 int ff_hevc_cbf_luma_decode(HEVCContext *s, int trafo_depth);
1023 int ff_hevc_log2_res_scale_abs(HEVCContext *s, int idx);
1024 int ff_hevc_res_scale_sign_flag(HEVCContext *s, int idx);
1027 * Get the number of candidate references for the current frame.
1029 int ff_hevc_frame_nb_refs(HEVCContext *s);
1031 int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc);
1034 * Find next frame in output order and put a reference to it in frame.
1035 * @return 1 if a frame was output, 0 otherwise
1037 int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush);
1039 void ff_hevc_bump_frame(HEVCContext *s);
1041 void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags);
1043 void ff_hevc_set_neighbour_available(HEVCContext *s, int x0, int y0,
1044 int nPbW, int nPbH);
1045 void ff_hevc_luma_mv_merge_mode(HEVCContext *s, int x0, int y0,
1046 int nPbW, int nPbH, int log2_cb_size,
1047 int part_idx, int merge_idx, MvField *mv);
1048 void ff_hevc_luma_mv_mvp_mode(HEVCContext *s, int x0, int y0,
1049 int nPbW, int nPbH, int log2_cb_size,
1050 int part_idx, int merge_idx,
1051 MvField *mv, int mvp_lx_flag, int LX);
1052 void ff_hevc_set_qPy(HEVCContext *s, int xBase, int yBase,
1054 void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0,
1055 int log2_trafo_size);
1056 int ff_hevc_cu_qp_delta_sign_flag(HEVCContext *s);
1057 int ff_hevc_cu_qp_delta_abs(HEVCContext *s);
1058 int ff_hevc_cu_chroma_qp_offset_flag(HEVCContext *s);
1059 int ff_hevc_cu_chroma_qp_offset_idx(HEVCContext *s);
1060 void ff_hevc_hls_filter(HEVCContext *s, int x, int y, int ctb_size);
1061 void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size);
1062 void ff_hevc_hls_residual_coding(HEVCContext *s, int x0, int y0,
1063 int log2_trafo_size, enum ScanType scan_idx,
1066 void ff_hevc_hls_mvd_coding(HEVCContext *s, int x0, int y0, int log2_cb_size);
1070 * Extract the raw (unescaped) HEVC bitstream.
1072 int ff_hevc_extract_rbsp(HEVCContext *s, const uint8_t *src, int length,
1076 * Split an input packet into NAL units.
1078 int ff_hevc_split_packet(HEVCContext *s, HEVCPacket *pkt, const uint8_t *buf, int length,
1079 AVCodecContext *avctx, int is_nalff, int nal_length_size);
1081 int ff_hevc_encode_nal_vps(HEVCVPS *vps, unsigned int id,
1082 uint8_t *buf, int buf_size);
1084 extern const uint8_t ff_hevc_qpel_extra_before[4];
1085 extern const uint8_t ff_hevc_qpel_extra_after[4];
1086 extern const uint8_t ff_hevc_qpel_extra[4];
1088 extern const uint8_t ff_hevc_diag_scan4x4_x[16];
1089 extern const uint8_t ff_hevc_diag_scan4x4_y[16];
1090 extern const uint8_t ff_hevc_diag_scan8x8_x[64];
1091 extern const uint8_t ff_hevc_diag_scan8x8_y[64];
1093 #endif /* AVCODEC_HEVC_H */