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"
41 #define MAX_DPB_SIZE 16 // A.4.1
47 #define MAX_SUB_LAYERS 7
48 #define MAX_VPS_COUNT 16
49 #define MAX_SPS_COUNT 32
50 #define MAX_PPS_COUNT 256
51 #define MAX_SHORT_TERM_RPS_COUNT 64
52 #define MAX_CU_SIZE 128
54 //TODO: check if this is really the maximum
55 #define MAX_TRANSFORM_DEPTH 5
57 #define MAX_TB_SIZE 32
58 #define MAX_PB_SIZE 64
59 #define MAX_LOG2_CTB_SIZE 6
61 #define DEFAULT_INTRA_TC_OFFSET 2
63 #define HEVC_CONTEXTS 183
65 #define MRG_MAX_NUM_CANDS 5
70 #define EPEL_EXTRA_BEFORE 1
71 #define EPEL_EXTRA_AFTER 2
75 * Value of the luma sample at position (x, y) in the 2D array tab.
77 #define SAMPLE(tab, x, y) ((tab)[(y) * s->sps->width + (x)])
78 #define SAMPLE_CTB(tab, x, y) ((tab)[(y) * min_cb_width + (x)])
79 #define SAMPLE_CBF(tab, x, y) ((tab)[((y) & ((1<<log2_trafo_size)-1)) * MAX_CU_SIZE + ((x) & ((1<<log2_trafo_size)-1))])
81 #define IS_IDR(s) (s->nal_unit_type == NAL_IDR_W_RADL || s->nal_unit_type == NAL_IDR_N_LP)
82 #define IS_BLA(s) (s->nal_unit_type == NAL_BLA_W_RADL || s->nal_unit_type == NAL_BLA_W_LP || \
83 s->nal_unit_type == NAL_BLA_N_LP)
84 #define IS_IRAP(s) (s->nal_unit_type >= 16 && s->nal_unit_type <= 23)
87 * Table 7-3: NAL unit type codes
140 SPLIT_CODING_UNIT_FLAG,
141 CU_TRANSQUANT_BYPASS_FLAG,
147 PREV_INTRA_LUMA_PRED_FLAG,
149 REM_INTRA_LUMA_PRED_MODE,
150 INTRA_CHROMA_PRED_MODE,
156 ABS_MVD_GREATER0_FLAG,
157 ABS_MVD_GREATER1_FLAG,
161 NO_RESIDUAL_DATA_FLAG,
162 SPLIT_TRANSFORM_FLAG,
166 LAST_SIGNIFICANT_COEFF_X_PREFIX,
167 LAST_SIGNIFICANT_COEFF_Y_PREFIX,
168 LAST_SIGNIFICANT_COEFF_X_SUFFIX,
169 LAST_SIGNIFICANT_COEFF_Y_SUFFIX,
170 SIGNIFICANT_COEFF_GROUP_FLAG,
171 SIGNIFICANT_COEFF_FLAG,
172 COEFF_ABS_LEVEL_GREATER1_FLAG,
173 COEFF_ABS_LEVEL_GREATER2_FLAG,
174 COEFF_ABS_LEVEL_REMAINING,
258 typedef struct ShortTermRPS {
259 int num_negative_pics;
261 int32_t delta_poc[32];
265 typedef struct LongTermRPS {
271 typedef struct RefPicList {
272 struct HEVCFrame *ref[MAX_REFS];
274 int isLongTerm[MAX_REFS];
278 typedef struct RefPicListTab {
279 RefPicList refPicList[2];
282 typedef struct HEVCWindow {
292 int overscan_info_present_flag;
293 int overscan_appropriate_flag;
295 int video_signal_type_present_flag;
297 int video_full_range_flag;
298 int colour_description_present_flag;
299 uint8_t colour_primaries;
300 uint8_t transfer_characteristic;
301 uint8_t matrix_coeffs;
303 int chroma_loc_info_present_flag;
304 int chroma_sample_loc_type_top_field;
305 int chroma_sample_loc_type_bottom_field;
306 int neutra_chroma_indication_flag;
309 int frame_field_info_present_flag;
311 int default_display_window_flag;
312 HEVCWindow def_disp_win;
314 int vui_timing_info_present_flag;
315 uint32_t vui_num_units_in_tick;
316 uint32_t vui_time_scale;
317 int vui_poc_proportional_to_timing_flag;
318 int vui_num_ticks_poc_diff_one_minus1;
319 int vui_hrd_parameters_present_flag;
321 int bitstream_restriction_flag;
322 int tiles_fixed_structure_flag;
323 int motion_vectors_over_pic_boundaries_flag;
324 int restricted_ref_pic_lists_flag;
325 int min_spatial_segmentation_idc;
326 int max_bytes_per_pic_denom;
327 int max_bits_per_min_cu_denom;
328 int log2_max_mv_length_horizontal;
329 int log2_max_mv_length_vertical;
332 typedef struct PTLCommon {
333 uint8_t profile_space;
336 uint8_t profile_compatibility_flag[32];
338 uint8_t progressive_source_flag;
339 uint8_t interlaced_source_flag;
340 uint8_t non_packed_constraint_flag;
341 uint8_t frame_only_constraint_flag;
345 PTLCommon general_ptl;
346 PTLCommon sub_layer_ptl[MAX_SUB_LAYERS];
348 uint8_t sub_layer_profile_present_flag[MAX_SUB_LAYERS];
349 uint8_t sub_layer_level_present_flag[MAX_SUB_LAYERS];
352 typedef struct HEVCVPS {
353 uint8_t vps_temporal_id_nesting_flag;
355 int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1
358 int vps_sub_layer_ordering_info_present_flag;
359 unsigned int vps_max_dec_pic_buffering[MAX_SUB_LAYERS];
360 unsigned int vps_num_reorder_pics[MAX_SUB_LAYERS];
361 unsigned int vps_max_latency_increase[MAX_SUB_LAYERS];
362 int vps_max_layer_id;
363 int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1
364 uint8_t vps_timing_info_present_flag;
365 uint32_t vps_num_units_in_tick;
366 uint32_t vps_time_scale;
367 uint8_t vps_poc_proportional_to_timing_flag;
368 int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1
369 int vps_num_hrd_parameters;
372 typedef struct ScalingList {
373 /* This is a little wasteful, since sizeID 0 only needs 8 coeffs,
374 * and size ID 3 only has 2 arrays, not 6. */
375 uint8_t sl[4][6][64];
379 typedef struct HEVCSPS {
381 int chroma_format_idc;
382 uint8_t separate_colour_plane_flag;
384 ///< output (i.e. cropped) values
385 int output_width, output_height;
386 HEVCWindow output_window;
388 HEVCWindow pic_conf_win;
392 enum AVPixelFormat pix_fmt;
394 unsigned int log2_max_poc_lsb;
395 int pcm_enabled_flag;
399 int max_dec_pic_buffering;
400 int num_reorder_pics;
401 int max_latency_increase;
402 } temporal_layer[MAX_SUB_LAYERS];
407 uint8_t scaling_list_enable_flag;
408 ScalingList scaling_list;
410 unsigned int nb_st_rps;
411 ShortTermRPS st_rps[MAX_SHORT_TERM_RPS_COUNT];
413 uint8_t amp_enabled_flag;
416 uint8_t long_term_ref_pics_present_flag;
417 uint16_t lt_ref_pic_poc_lsb_sps[32];
418 uint8_t used_by_curr_pic_lt_sps_flag[32];
419 uint8_t num_long_term_ref_pics_sps;
423 uint8_t bit_depth_chroma;
424 unsigned int log2_min_pcm_cb_size;
425 unsigned int log2_max_pcm_cb_size;
426 uint8_t loop_filter_disable_flag;
428 uint8_t sps_temporal_mvp_enabled_flag;
429 uint8_t sps_strong_intra_smoothing_enable_flag;
431 unsigned int log2_min_cb_size;
432 unsigned int log2_diff_max_min_coding_block_size;
433 unsigned int log2_min_tb_size;
434 unsigned int log2_max_trafo_size;
435 unsigned int log2_ctb_size;
436 unsigned int log2_min_pu_size;
438 int max_transform_hierarchy_depth_inter;
439 int max_transform_hierarchy_depth_intra;
441 ///< coded frame dimension in various units
460 typedef struct HEVCPPS {
461 int sps_id; ///< seq_parameter_set_id
463 uint8_t sign_data_hiding_flag;
465 uint8_t cabac_init_present_flag;
467 int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1
468 int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1
469 int pic_init_qp_minus26;
471 uint8_t constrained_intra_pred_flag;
472 uint8_t transform_skip_enabled_flag;
474 uint8_t cu_qp_delta_enabled_flag;
475 int diff_cu_qp_delta_depth;
479 uint8_t pic_slice_level_chroma_qp_offsets_present_flag;
480 uint8_t weighted_pred_flag;
481 uint8_t weighted_bipred_flag;
482 uint8_t output_flag_present_flag;
483 uint8_t transquant_bypass_enable_flag;
485 uint8_t dependent_slice_segments_enabled_flag;
486 uint8_t tiles_enabled_flag;
487 uint8_t entropy_coding_sync_enabled_flag;
489 int num_tile_columns; ///< num_tile_columns_minus1 + 1
490 int num_tile_rows; ///< num_tile_rows_minus1 + 1
491 uint8_t uniform_spacing_flag;
492 uint8_t loop_filter_across_tiles_enabled_flag;
494 uint8_t seq_loop_filter_across_slices_enabled_flag;
496 uint8_t deblocking_filter_control_present_flag;
497 uint8_t deblocking_filter_override_enabled_flag;
499 int beta_offset; ///< beta_offset_div2 * 2
500 int tc_offset; ///< tc_offset_div2 * 2
502 uint8_t scaling_list_data_present_flag;
503 ScalingList scaling_list;
505 uint8_t lists_modification_present_flag;
506 int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2
507 int num_extra_slice_header_bits;
508 uint8_t slice_header_extension_present_flag;
510 // Inferred parameters
511 int *column_width; ///< ColumnWidth
512 int *row_height; ///< RowHeight
513 int *col_bd; ///< ColBd
514 int *row_bd; ///< RowBd
517 int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS
518 int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS
519 int *tile_id; ///< TileId
520 int *tile_pos_rs; ///< TilePosRS
521 int *min_cb_addr_zs; ///< MinCbAddrZS
522 int *min_tb_addr_zs; ///< MinTbAddrZS
525 typedef struct SliceHeader {
528 ///< address (in raster order) of the first block in the current slice segment
529 unsigned int slice_segment_addr;
530 ///< address (in raster order) of the first block in the current slice
531 unsigned int slice_addr;
533 enum SliceType slice_type;
535 int pic_order_cnt_lsb;
537 uint8_t first_slice_in_pic_flag;
538 uint8_t dependent_slice_segment_flag;
539 uint8_t pic_output_flag;
540 uint8_t colour_plane_id;
542 ///< RPS coded in the slice header itself is stored here
543 ShortTermRPS slice_rps;
544 const ShortTermRPS *short_term_rps;
545 LongTermRPS long_term_rps;
546 unsigned int list_entry_lx[2][32];
548 uint8_t rpl_modification_flag[2];
549 uint8_t no_output_of_prior_pics_flag;
550 uint8_t slice_temporal_mvp_enabled_flag;
552 unsigned int nb_refs[2];
554 uint8_t slice_sample_adaptive_offset_flag[3];
555 uint8_t mvd_l1_zero_flag;
557 uint8_t cabac_init_flag;
558 uint8_t disable_deblocking_filter_flag; ///< slice_header_disable_deblocking_filter_flag
559 uint8_t slice_loop_filter_across_slices_enabled_flag;
560 uint8_t collocated_list;
562 unsigned int collocated_ref_idx;
565 int slice_cb_qp_offset;
566 int slice_cr_qp_offset;
568 int beta_offset; ///< beta_offset_div2 * 2
569 int tc_offset; ///< tc_offset_div2 * 2
571 unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand
573 int num_entry_point_offsets;
577 uint8_t luma_log2_weight_denom;
578 int16_t chroma_log2_weight_denom;
580 int16_t luma_weight_l0[16];
581 int16_t chroma_weight_l0[16][2];
582 int16_t chroma_weight_l1[16][2];
583 int16_t luma_weight_l1[16];
585 int16_t luma_offset_l0[16];
586 int16_t chroma_offset_l0[16][2];
588 int16_t luma_offset_l1[16];
589 int16_t chroma_offset_l1[16][2];
591 int slice_ctb_addr_rs;
594 typedef struct CodingTree {
595 int depth; ///< ctDepth
598 typedef struct CodingUnit {
602 enum PredMode pred_mode; ///< PredMode
603 enum PartMode part_mode; ///< PartMode
605 uint8_t rqt_root_cbf;
609 // Inferred parameters
610 uint8_t intra_split_flag; ///< IntraSplitFlag
611 uint8_t max_trafo_depth; ///< MaxTrafoDepth
612 uint8_t cu_transquant_bypass_flag;
616 int16_t x; ///< horizontal component of motion vector
617 int16_t y; ///< vertical component of motion vector
620 typedef struct MvField {
627 typedef struct NeighbourAvailable {
628 int cand_bottom_left;
633 int cand_up_right_sap;
634 } NeighbourAvailable;
636 typedef struct PredictionUnit {
638 int rem_intra_luma_pred_mode;
639 uint8_t intra_pred_mode[4];
642 uint8_t intra_pred_mode_c;
645 typedef struct TransformTree {
646 uint8_t cbf_cb[MAX_TRANSFORM_DEPTH][MAX_CU_SIZE * MAX_CU_SIZE];
647 uint8_t cbf_cr[MAX_TRANSFORM_DEPTH][MAX_CU_SIZE * MAX_CU_SIZE];
650 // Inferred parameters
651 uint8_t inter_split_flag;
654 typedef struct TransformUnit {
657 // Inferred parameters;
658 int cur_intra_pred_mode;
659 uint8_t is_cu_qp_delta_coded;
662 typedef struct DBParams {
667 #define HEVC_FRAME_FLAG_OUTPUT (1 << 0)
668 #define HEVC_FRAME_FLAG_SHORT_REF (1 << 1)
669 #define HEVC_FRAME_FLAG_LONG_REF (1 << 2)
671 typedef struct HEVCFrame {
675 RefPicList *refPicList;
676 RefPicListTab **rpl_tab;
679 struct HEVCFrame *collocated_ref;
683 AVBufferRef *tab_mvf_buf;
684 AVBufferRef *rpl_tab_buf;
685 AVBufferRef *rpl_buf;
688 * A sequence counter, so that old frames are output first
694 * A combination of HEVC_FRAME_FLAG_*
699 typedef struct HEVCNAL {
700 uint8_t *rbsp_buffer;
701 int rbsp_buffer_size;
709 typedef struct HEVCPredContext {
710 void (*intra_pred)(struct HEVCContext *s, int x0, int y0,
711 int log2_size, int c_idx);
713 void (*pred_planar[4])(uint8_t *src, const uint8_t *top,
714 const uint8_t *left, ptrdiff_t stride);
715 void (*pred_dc)(uint8_t *src, const uint8_t *top, const uint8_t *left,
716 ptrdiff_t stride, int log2_size, int c_idx);
717 void (*pred_angular[4])(uint8_t *src, const uint8_t *top,
718 const uint8_t *left, ptrdiff_t stride,
719 int c_idx, int mode);
722 typedef struct HEVCLocalContext {
723 DECLARE_ALIGNED(16, int16_t, mc_buffer[(MAX_PB_SIZE + 7) * MAX_PB_SIZE]);
724 uint8_t cabac_state[HEVC_CONTEXTS];
726 uint8_t first_qp_group;
737 uint8_t ctb_left_flag;
739 uint8_t ctb_up_right_flag;
740 uint8_t ctb_up_left_flag;
741 int start_of_tiles_x;
744 uint8_t *edge_emu_buffer;
745 int edge_emu_buffer_size;
749 NeighbourAvailable na;
751 uint8_t slice_or_tiles_left_boundary;
752 uint8_t slice_or_tiles_up_boundary;
755 typedef struct HEVCContext {
756 const AVClass *c; // needed by private avoptions
757 AVCodecContext *avctx;
759 HEVCLocalContext HEVClc;
761 uint8_t cabac_state[HEVC_CONTEXTS];
763 /** 1 if the independent slice segment header was successfully parsed */
764 uint8_t slice_initialized;
769 AVFrame *output_frame;
774 AVBufferRef *vps_list[MAX_VPS_COUNT];
775 AVBufferRef *sps_list[MAX_SPS_COUNT];
776 AVBufferRef *pps_list[MAX_PPS_COUNT];
778 AVBufferPool *tab_mvf_pool;
779 AVBufferPool *rpl_tab_pool;
781 ///< candidate references for the current frame
787 enum NALUnitType nal_unit_type;
788 int temporal_id; ///< temporal_id_plus1 - 1
793 int slice_idx; ///< number of the slice being currently decoded
794 int eos; ///< current packet contains an EOS/EOB NAL
802 HEVCDSPContext hevcdsp;
803 VideoDSPContext vdsp;
806 uint8_t *split_cu_flag;
807 uint8_t *horizontal_bs;
808 uint8_t *vertical_bs;
810 int32_t *tab_slice_address;
814 uint8_t *tab_ct_depth;
818 uint8_t *cbf_luma; // cbf_luma of colocated TU
821 // CTB-level flags affecting loop filter operation
822 uint8_t *filter_slice_edges;
824 /** used on BE to byteswap the lines for checksumming */
825 uint8_t *checksum_buf;
826 int checksum_buf_size;
829 * Sequence counters for decoded and output frames, so that old
830 * frames are output first after a POC reset
839 // for checking the frame checksums
840 struct AVMD5 *md5_ctx;
844 uint8_t context_initialized;
845 uint8_t is_nalff; ///< this flag is != 0 if bitstream is encapsulated
846 ///< as a format defined in 14496-15
847 int apply_defdispwin;
849 int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
852 /** frame packing arrangement variables */
853 int sei_frame_packing_present;
854 int frame_packing_arrangement_type;
855 int content_interpretation_type;
856 int quincunx_subsampling;
859 int ff_hevc_decode_short_term_rps(HEVCContext *s, ShortTermRPS *rps,
860 const HEVCSPS *sps, int is_slice_header);
861 int ff_hevc_decode_nal_vps(HEVCContext *s);
862 int ff_hevc_decode_nal_sps(HEVCContext *s);
863 int ff_hevc_decode_nal_pps(HEVCContext *s);
864 int ff_hevc_decode_nal_sei(HEVCContext *s);
867 * Mark all frames in DPB as unused for reference.
869 void ff_hevc_clear_refs(HEVCContext *s);
872 * Drop all frames currently in DPB.
874 void ff_hevc_flush_dpb(HEVCContext *s);
877 * Compute POC of the current frame and return it.
879 int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb);
881 RefPicList *ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *frame,
885 * Construct the reference picture sets for the current frame.
887 int ff_hevc_frame_rps(HEVCContext *s);
890 * Construct the reference picture list(s) for the current slice.
892 int ff_hevc_slice_rpl(HEVCContext *s);
894 void ff_hevc_save_states(HEVCContext *s, int ctb_addr_ts);
895 void ff_hevc_cabac_init(HEVCContext *s, int ctb_addr_ts);
896 int ff_hevc_sao_merge_flag_decode(HEVCContext *s);
897 int ff_hevc_sao_type_idx_decode(HEVCContext *s);
898 int ff_hevc_sao_band_position_decode(HEVCContext *s);
899 int ff_hevc_sao_offset_abs_decode(HEVCContext *s);
900 int ff_hevc_sao_offset_sign_decode(HEVCContext *s);
901 int ff_hevc_sao_eo_class_decode(HEVCContext *s);
902 int ff_hevc_end_of_slice_flag_decode(HEVCContext *s);
903 int ff_hevc_cu_transquant_bypass_flag_decode(HEVCContext *s);
904 int ff_hevc_skip_flag_decode(HEVCContext *s, int x0, int y0,
906 int ff_hevc_pred_mode_decode(HEVCContext *s);
907 int ff_hevc_split_coding_unit_flag_decode(HEVCContext *s, int ct_depth,
909 int ff_hevc_part_mode_decode(HEVCContext *s, int log2_cb_size);
910 int ff_hevc_pcm_flag_decode(HEVCContext *s);
911 int ff_hevc_prev_intra_luma_pred_flag_decode(HEVCContext *s);
912 int ff_hevc_mpm_idx_decode(HEVCContext *s);
913 int ff_hevc_rem_intra_luma_pred_mode_decode(HEVCContext *s);
914 int ff_hevc_intra_chroma_pred_mode_decode(HEVCContext *s);
915 int ff_hevc_merge_idx_decode(HEVCContext *s);
916 int ff_hevc_merge_flag_decode(HEVCContext *s);
917 int ff_hevc_inter_pred_idc_decode(HEVCContext *s, int nPbW, int nPbH);
918 int ff_hevc_ref_idx_lx_decode(HEVCContext *s, int num_ref_idx_lx);
919 int ff_hevc_mvp_lx_flag_decode(HEVCContext *s);
920 int ff_hevc_no_residual_syntax_flag_decode(HEVCContext *s);
921 int ff_hevc_abs_mvd_greater0_flag_decode(HEVCContext *s);
922 int ff_hevc_abs_mvd_greater1_flag_decode(HEVCContext *s);
923 int ff_hevc_mvd_decode(HEVCContext *s);
924 int ff_hevc_mvd_sign_flag_decode(HEVCContext *s);
925 int ff_hevc_split_transform_flag_decode(HEVCContext *s, int log2_trafo_size);
926 int ff_hevc_cbf_cb_cr_decode(HEVCContext *s, int trafo_depth);
927 int ff_hevc_cbf_luma_decode(HEVCContext *s, int trafo_depth);
928 int ff_hevc_transform_skip_flag_decode(HEVCContext *s, int c_idx);
929 int ff_hevc_last_significant_coeff_x_prefix_decode(HEVCContext *s, int c_idx,
931 int ff_hevc_last_significant_coeff_y_prefix_decode(HEVCContext *s, int c_idx,
933 int ff_hevc_last_significant_coeff_suffix_decode(HEVCContext *s,
934 int last_significant_coeff_prefix);
935 int ff_hevc_significant_coeff_group_flag_decode(HEVCContext *s, int c_idx,
937 int ff_hevc_significant_coeff_flag_decode(HEVCContext *s, int c_idx, int x_c,
938 int y_c, int log2_trafo_size,
939 int scan_idx, int prev_sig);
940 int ff_hevc_coeff_abs_level_greater1_flag_decode(HEVCContext *s, int c_idx,
942 int ff_hevc_coeff_abs_level_greater2_flag_decode(HEVCContext *s, int c_idx,
944 int ff_hevc_coeff_abs_level_remaining(HEVCContext *s, int base_level,
946 int ff_hevc_coeff_sign_flag(HEVCContext *s, uint8_t nb);
949 * Get the number of candidate references for the current frame.
951 int ff_hevc_frame_nb_refs(HEVCContext *s);
953 int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc);
956 * Find next frame in output order and put a reference to it in frame.
957 * @return 1 if a frame was output, 0 otherwise
959 int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush);
961 void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags);
963 void ff_hevc_set_neighbour_available(HEVCContext *s, int x0, int y0,
965 void ff_hevc_luma_mv_merge_mode(HEVCContext *s, int x0, int y0,
966 int nPbW, int nPbH, int log2_cb_size,
967 int part_idx, int merge_idx, MvField *mv);
968 void ff_hevc_luma_mv_mvp_mode(HEVCContext *s, int x0, int y0,
969 int nPbW, int nPbH, int log2_cb_size,
970 int part_idx, int merge_idx,
971 MvField *mv, int mvp_lx_flag, int LX);
972 void ff_hevc_set_qPy(HEVCContext *s, int xC, int yC, int xBase, int yBase,
974 void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0,
976 int slice_or_tiles_up_boundary,
977 int slice_or_tiles_left_boundary);
978 int ff_hevc_cu_qp_delta_sign_flag(HEVCContext *s);
979 int ff_hevc_cu_qp_delta_abs(HEVCContext *s);
980 void ff_hevc_hls_filter(HEVCContext *s, int x, int y);
981 void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size);
983 void ff_hevc_pps_free(HEVCPPS **ppps);
985 void ff_hevc_pred_init(HEVCPredContext *hpc, int bit_depth);
987 extern const uint8_t ff_hevc_qpel_extra_before[4];
988 extern const uint8_t ff_hevc_qpel_extra_after[4];
989 extern const uint8_t ff_hevc_qpel_extra[4];
991 extern const uint8_t ff_hevc_diag_scan4x4_x[16];
992 extern const uint8_t ff_hevc_diag_scan4x4_y[16];
993 extern const uint8_t ff_hevc_diag_scan8x8_x[64];
994 extern const uint8_t ff_hevc_diag_scan8x8_y[64];
996 #endif /* AVCODEC_HEVC_H */