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_HEVCDEC_H
24 #define AVCODEC_HEVCDEC_H
26 #include <stdatomic.h>
28 #include "libavutil/buffer.h"
29 #include "libavutil/md5.h"
36 #include "h2645_parse.h"
43 #define MAX_DPB_SIZE 16 // A.4.1
46 #define MAX_NB_THREADS 16
47 #define SHIFT_CTB_WPP 2
49 //TODO: check if this is really the maximum
50 #define MAX_TRANSFORM_DEPTH 5
52 #define MAX_TB_SIZE 32
53 #define MAX_LOG2_CTB_SIZE 6
55 #define DEFAULT_INTRA_TC_OFFSET 2
57 #define HEVC_CONTEXTS 199
59 #define MRG_MAX_NUM_CANDS 5
64 #define EPEL_EXTRA_BEFORE 1
65 #define EPEL_EXTRA_AFTER 2
67 #define QPEL_EXTRA_BEFORE 3
68 #define QPEL_EXTRA_AFTER 4
71 #define EDGE_EMU_BUFFER_STRIDE 80
74 * Value of the luma sample at position (x, y) in the 2D array tab.
76 #define SAMPLE(tab, x, y) ((tab)[(y) * s->sps->width + (x)])
77 #define SAMPLE_CTB(tab, x, y) ((tab)[(y) * min_cb_width + (x)])
79 #define IS_IDR(s) ((s)->nal_unit_type == HEVC_NAL_IDR_W_RADL || (s)->nal_unit_type == HEVC_NAL_IDR_N_LP)
80 #define IS_BLA(s) ((s)->nal_unit_type == HEVC_NAL_BLA_W_RADL || (s)->nal_unit_type == HEVC_NAL_BLA_W_LP || \
81 (s)->nal_unit_type == HEVC_NAL_BLA_N_LP)
82 #define IS_IRAP(s) ((s)->nal_unit_type >= 16 && (s)->nal_unit_type <= 23)
107 SPLIT_CODING_UNIT_FLAG,
108 CU_TRANSQUANT_BYPASS_FLAG,
114 PREV_INTRA_LUMA_PRED_FLAG,
116 REM_INTRA_LUMA_PRED_MODE,
117 INTRA_CHROMA_PRED_MODE,
123 ABS_MVD_GREATER0_FLAG,
124 ABS_MVD_GREATER1_FLAG,
128 NO_RESIDUAL_DATA_FLAG,
129 SPLIT_TRANSFORM_FLAG,
134 EXPLICIT_RDPCM_DIR_FLAG,
135 LAST_SIGNIFICANT_COEFF_X_PREFIX,
136 LAST_SIGNIFICANT_COEFF_Y_PREFIX,
137 LAST_SIGNIFICANT_COEFF_X_SUFFIX,
138 LAST_SIGNIFICANT_COEFF_Y_SUFFIX,
139 SIGNIFICANT_COEFF_GROUP_FLAG,
140 SIGNIFICANT_COEFF_FLAG,
141 COEFF_ABS_LEVEL_GREATER1_FLAG,
142 COEFF_ABS_LEVEL_GREATER2_FLAG,
143 COEFF_ABS_LEVEL_REMAINING,
147 CU_CHROMA_QP_OFFSET_FLAG,
148 CU_CHROMA_QP_OFFSET_IDX,
239 typedef struct ShortTermRPS {
240 unsigned int num_negative_pics;
242 int rps_idx_num_delta_pocs;
243 int32_t delta_poc[32];
247 typedef struct LongTermRPS {
253 typedef struct RefPicList {
254 struct HEVCFrame *ref[MAX_REFS];
256 int isLongTerm[MAX_REFS];
260 typedef struct RefPicListTab {
261 RefPicList refPicList[2];
264 typedef struct HEVCWindow {
265 unsigned int left_offset;
266 unsigned int right_offset;
267 unsigned int top_offset;
268 unsigned int bottom_offset;
274 int overscan_info_present_flag;
275 int overscan_appropriate_flag;
277 int video_signal_type_present_flag;
279 int video_full_range_flag;
280 int colour_description_present_flag;
281 uint8_t colour_primaries;
282 uint8_t transfer_characteristic;
283 uint8_t matrix_coeffs;
285 int chroma_loc_info_present_flag;
286 int chroma_sample_loc_type_top_field;
287 int chroma_sample_loc_type_bottom_field;
288 int neutra_chroma_indication_flag;
291 int frame_field_info_present_flag;
293 int default_display_window_flag;
294 HEVCWindow def_disp_win;
296 int vui_timing_info_present_flag;
297 uint32_t vui_num_units_in_tick;
298 uint32_t vui_time_scale;
299 int vui_poc_proportional_to_timing_flag;
300 int vui_num_ticks_poc_diff_one_minus1;
301 int vui_hrd_parameters_present_flag;
303 int bitstream_restriction_flag;
304 int tiles_fixed_structure_flag;
305 int motion_vectors_over_pic_boundaries_flag;
306 int restricted_ref_pic_lists_flag;
307 int min_spatial_segmentation_idc;
308 int max_bytes_per_pic_denom;
309 int max_bits_per_min_cu_denom;
310 int log2_max_mv_length_horizontal;
311 int log2_max_mv_length_vertical;
314 typedef struct PTLCommon {
315 uint8_t profile_space;
318 uint8_t profile_compatibility_flag[32];
320 uint8_t progressive_source_flag;
321 uint8_t interlaced_source_flag;
322 uint8_t non_packed_constraint_flag;
323 uint8_t frame_only_constraint_flag;
327 PTLCommon general_ptl;
328 PTLCommon sub_layer_ptl[HEVC_MAX_SUB_LAYERS];
330 uint8_t sub_layer_profile_present_flag[HEVC_MAX_SUB_LAYERS];
331 uint8_t sub_layer_level_present_flag[HEVC_MAX_SUB_LAYERS];
334 typedef struct HEVCVPS {
335 uint8_t vps_temporal_id_nesting_flag;
337 int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1
340 int vps_sub_layer_ordering_info_present_flag;
341 unsigned int vps_max_dec_pic_buffering[HEVC_MAX_SUB_LAYERS];
342 unsigned int vps_num_reorder_pics[HEVC_MAX_SUB_LAYERS];
343 unsigned int vps_max_latency_increase[HEVC_MAX_SUB_LAYERS];
344 int vps_max_layer_id;
345 int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1
346 uint8_t vps_timing_info_present_flag;
347 uint32_t vps_num_units_in_tick;
348 uint32_t vps_time_scale;
349 uint8_t vps_poc_proportional_to_timing_flag;
350 int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1
351 int vps_num_hrd_parameters;
357 typedef struct ScalingList {
358 /* This is a little wasteful, since sizeID 0 only needs 8 coeffs,
359 * and size ID 3 only has 2 arrays, not 6. */
360 uint8_t sl[4][6][64];
364 typedef struct HEVCSPS {
366 int chroma_format_idc;
367 uint8_t separate_colour_plane_flag;
369 ///< output (i.e. cropped) values
370 int output_width, output_height;
371 HEVCWindow output_window;
373 HEVCWindow pic_conf_win;
377 enum AVPixelFormat pix_fmt;
379 unsigned int log2_max_poc_lsb;
380 int pcm_enabled_flag;
384 int max_dec_pic_buffering;
385 int num_reorder_pics;
386 int max_latency_increase;
387 } temporal_layer[HEVC_MAX_SUB_LAYERS];
392 uint8_t scaling_list_enable_flag;
393 ScalingList scaling_list;
395 unsigned int nb_st_rps;
396 ShortTermRPS st_rps[HEVC_MAX_SHORT_TERM_RPS_COUNT];
398 uint8_t amp_enabled_flag;
401 uint8_t long_term_ref_pics_present_flag;
402 uint16_t lt_ref_pic_poc_lsb_sps[32];
403 uint8_t used_by_curr_pic_lt_sps_flag[32];
404 uint8_t num_long_term_ref_pics_sps;
408 uint8_t bit_depth_chroma;
409 unsigned int log2_min_pcm_cb_size;
410 unsigned int log2_max_pcm_cb_size;
411 uint8_t loop_filter_disable_flag;
413 uint8_t sps_temporal_mvp_enabled_flag;
414 uint8_t sps_strong_intra_smoothing_enable_flag;
416 unsigned int log2_min_cb_size;
417 unsigned int log2_diff_max_min_coding_block_size;
418 unsigned int log2_min_tb_size;
419 unsigned int log2_max_trafo_size;
420 unsigned int log2_ctb_size;
421 unsigned int log2_min_pu_size;
423 int max_transform_hierarchy_depth_inter;
424 int max_transform_hierarchy_depth_intra;
426 int transform_skip_rotation_enabled_flag;
427 int transform_skip_context_enabled_flag;
428 int implicit_rdpcm_enabled_flag;
429 int explicit_rdpcm_enabled_flag;
430 int intra_smoothing_disabled_flag;
431 int persistent_rice_adaptation_enabled_flag;
433 ///< coded frame dimension in various units
456 typedef struct HEVCPPS {
457 unsigned int sps_id; ///< seq_parameter_set_id
459 uint8_t sign_data_hiding_flag;
461 uint8_t cabac_init_present_flag;
463 int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1
464 int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1
465 int pic_init_qp_minus26;
467 uint8_t constrained_intra_pred_flag;
468 uint8_t transform_skip_enabled_flag;
470 uint8_t cu_qp_delta_enabled_flag;
471 int diff_cu_qp_delta_depth;
475 uint8_t pic_slice_level_chroma_qp_offsets_present_flag;
476 uint8_t weighted_pred_flag;
477 uint8_t weighted_bipred_flag;
478 uint8_t output_flag_present_flag;
479 uint8_t transquant_bypass_enable_flag;
481 uint8_t dependent_slice_segments_enabled_flag;
482 uint8_t tiles_enabled_flag;
483 uint8_t entropy_coding_sync_enabled_flag;
485 int num_tile_columns; ///< num_tile_columns_minus1 + 1
486 int num_tile_rows; ///< num_tile_rows_minus1 + 1
487 uint8_t uniform_spacing_flag;
488 uint8_t loop_filter_across_tiles_enabled_flag;
490 uint8_t seq_loop_filter_across_slices_enabled_flag;
492 uint8_t deblocking_filter_control_present_flag;
493 uint8_t deblocking_filter_override_enabled_flag;
495 int beta_offset; ///< beta_offset_div2 * 2
496 int tc_offset; ///< tc_offset_div2 * 2
498 uint8_t scaling_list_data_present_flag;
499 ScalingList scaling_list;
501 uint8_t lists_modification_present_flag;
502 int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2
503 int num_extra_slice_header_bits;
504 uint8_t slice_header_extension_present_flag;
505 uint8_t log2_max_transform_skip_block_size;
506 uint8_t cross_component_prediction_enabled_flag;
507 uint8_t chroma_qp_offset_list_enabled_flag;
508 uint8_t diff_cu_chroma_qp_offset_depth;
509 uint8_t chroma_qp_offset_list_len_minus1;
510 int8_t cb_qp_offset_list[5];
511 int8_t cr_qp_offset_list[5];
512 uint8_t log2_sao_offset_scale_luma;
513 uint8_t log2_sao_offset_scale_chroma;
515 // Inferred parameters
516 unsigned int *column_width; ///< ColumnWidth
517 unsigned int *row_height; ///< RowHeight
518 unsigned int *col_bd; ///< ColBd
519 unsigned int *row_bd; ///< RowBd
522 int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS
523 int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS
524 int *tile_id; ///< TileId
525 int *tile_pos_rs; ///< TilePosRS
526 int *min_tb_addr_zs; ///< MinTbAddrZS
527 int *min_tb_addr_zs_tab;///< MinTbAddrZS
533 typedef struct HEVCParamSets {
534 AVBufferRef *vps_list[HEVC_MAX_VPS_COUNT];
535 AVBufferRef *sps_list[HEVC_MAX_SPS_COUNT];
536 AVBufferRef *pps_list[HEVC_MAX_PPS_COUNT];
538 /* currently active parameter sets */
544 typedef struct SliceHeader {
547 ///< address (in raster order) of the first block in the current slice segment
548 unsigned int slice_segment_addr;
549 ///< address (in raster order) of the first block in the current slice
550 unsigned int slice_addr;
552 enum SliceType slice_type;
554 int pic_order_cnt_lsb;
556 uint8_t first_slice_in_pic_flag;
557 uint8_t dependent_slice_segment_flag;
558 uint8_t pic_output_flag;
559 uint8_t colour_plane_id;
561 ///< RPS coded in the slice header itself is stored here
562 int short_term_ref_pic_set_sps_flag;
563 int short_term_ref_pic_set_size;
564 ShortTermRPS slice_rps;
565 const ShortTermRPS *short_term_rps;
566 int long_term_ref_pic_set_size;
567 LongTermRPS long_term_rps;
568 unsigned int list_entry_lx[2][32];
570 uint8_t rpl_modification_flag[2];
571 uint8_t no_output_of_prior_pics_flag;
572 uint8_t slice_temporal_mvp_enabled_flag;
574 unsigned int nb_refs[2];
576 uint8_t slice_sample_adaptive_offset_flag[3];
577 uint8_t mvd_l1_zero_flag;
579 uint8_t cabac_init_flag;
580 uint8_t disable_deblocking_filter_flag; ///< slice_header_disable_deblocking_filter_flag
581 uint8_t slice_loop_filter_across_slices_enabled_flag;
582 uint8_t collocated_list;
584 unsigned int collocated_ref_idx;
587 int slice_cb_qp_offset;
588 int slice_cr_qp_offset;
590 uint8_t cu_chroma_qp_offset_enabled_flag;
592 int beta_offset; ///< beta_offset_div2 * 2
593 int tc_offset; ///< tc_offset_div2 * 2
595 unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand
597 unsigned *entry_point_offset;
600 int num_entry_point_offsets;
604 uint8_t luma_log2_weight_denom;
605 int16_t chroma_log2_weight_denom;
607 int16_t luma_weight_l0[16];
608 int16_t chroma_weight_l0[16][2];
609 int16_t chroma_weight_l1[16][2];
610 int16_t luma_weight_l1[16];
612 int16_t luma_offset_l0[16];
613 int16_t chroma_offset_l0[16][2];
615 int16_t luma_offset_l1[16];
616 int16_t chroma_offset_l1[16][2];
618 int slice_ctb_addr_rs;
621 typedef struct CodingUnit {
625 enum PredMode pred_mode; ///< PredMode
626 enum PartMode part_mode; ///< PartMode
628 // Inferred parameters
629 uint8_t intra_split_flag; ///< IntraSplitFlag
630 uint8_t max_trafo_depth; ///< MaxTrafoDepth
631 uint8_t cu_transquant_bypass_flag;
635 int16_t x; ///< horizontal component of motion vector
636 int16_t y; ///< vertical component of motion vector
639 typedef struct MvField {
640 DECLARE_ALIGNED(4, Mv, mv)[2];
645 typedef struct NeighbourAvailable {
646 int cand_bottom_left;
651 int cand_up_right_sap;
652 } NeighbourAvailable;
654 typedef struct PredictionUnit {
656 int rem_intra_luma_pred_mode;
657 uint8_t intra_pred_mode[4];
660 uint8_t intra_pred_mode_c[4];
661 uint8_t chroma_mode_c[4];
664 typedef struct TransformUnit {
669 // Inferred parameters;
671 int intra_pred_mode_c;
673 uint8_t is_cu_qp_delta_coded;
674 uint8_t is_cu_chroma_qp_offset_coded;
675 int8_t cu_qp_offset_cb;
676 int8_t cu_qp_offset_cr;
680 typedef struct DBParams {
685 #define HEVC_FRAME_FLAG_OUTPUT (1 << 0)
686 #define HEVC_FRAME_FLAG_SHORT_REF (1 << 1)
687 #define HEVC_FRAME_FLAG_LONG_REF (1 << 2)
688 #define HEVC_FRAME_FLAG_BUMPING (1 << 3)
690 typedef struct HEVCFrame {
694 RefPicList *refPicList;
695 RefPicListTab **rpl_tab;
698 struct HEVCFrame *collocated_ref;
702 AVBufferRef *tab_mvf_buf;
703 AVBufferRef *rpl_tab_buf;
704 AVBufferRef *rpl_buf;
706 AVBufferRef *hwaccel_priv_buf;
707 void *hwaccel_picture_private;
710 * A sequence counter, so that old frames are output first
716 * A combination of HEVC_FRAME_FLAG_*
721 typedef struct HEVCLocalContext {
722 uint8_t cabac_state[HEVC_CONTEXTS];
724 uint8_t stat_coeff[4];
726 uint8_t first_qp_group;
738 uint8_t ctb_left_flag;
740 uint8_t ctb_up_right_flag;
741 uint8_t ctb_up_left_flag;
744 /* +7 is for subpixel interpolation, *2 for high bit depths */
745 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
746 /* The extended size between the new edge emu buffer is abused by SAO */
747 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer2)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
748 DECLARE_ALIGNED(32, int16_t, tmp [MAX_PB_SIZE * MAX_PB_SIZE]);
753 NeighbourAvailable na;
755 #define BOUNDARY_LEFT_SLICE (1 << 0)
756 #define BOUNDARY_LEFT_TILE (1 << 1)
757 #define BOUNDARY_UPPER_SLICE (1 << 2)
758 #define BOUNDARY_UPPER_TILE (1 << 3)
759 /* properties of the boundary of the current CTB for the purposes
760 * of the deblocking filter */
764 typedef struct HEVCContext {
765 const AVClass *c; // needed by private avoptions
766 AVCodecContext *avctx;
768 struct HEVCContext *sList[MAX_NB_THREADS];
770 HEVCLocalContext *HEVClcList[MAX_NB_THREADS];
771 HEVCLocalContext *HEVClc;
773 uint8_t threads_type;
774 uint8_t threads_number;
779 uint8_t *cabac_state;
781 /** 1 if the independent slice segment header was successfully parsed */
782 uint8_t slice_initialized;
785 AVFrame *output_frame;
786 uint8_t *sao_pixel_buffer_h[3];
787 uint8_t *sao_pixel_buffer_v[3];
791 AVBufferPool *tab_mvf_pool;
792 AVBufferPool *rpl_tab_pool;
794 ///< candidate references for the current frame
800 enum HEVCNALUnitType nal_unit_type;
801 int temporal_id; ///< temporal_id_plus1 - 1
806 int slice_idx; ///< number of the slice being currently decoded
807 int eos; ///< current packet contains an EOS/EOB NAL
808 int last_eos; ///< last packet contains an EOS/EOB NAL
814 int no_rasl_output_flag;
817 HEVCDSPContext hevcdsp;
818 VideoDSPContext vdsp;
819 BswapDSPContext bdsp;
821 uint8_t *horizontal_bs;
822 uint8_t *vertical_bs;
824 int32_t *tab_slice_address;
828 uint8_t *tab_ct_depth;
832 uint8_t *cbf_luma; // cbf_luma of colocated TU
835 // CTB-level flags affecting loop filter operation
836 uint8_t *filter_slice_edges;
838 /** used on BE to byteswap the lines for checksumming */
839 uint8_t *checksum_buf;
840 int checksum_buf_size;
843 * Sequence counters for decoded and output frames, so that old
844 * frames are output first after a POC reset
849 int enable_parallel_tiles;
855 // type of the first VCL NAL of the current frame
856 enum HEVCNALUnitType first_nal_type;
858 // for checking the frame checksums
859 struct AVMD5 *md5_ctx;
863 uint8_t context_initialized;
864 uint8_t is_nalff; ///< this flag is != 0 if bitstream is encapsulated
865 ///< as a format defined in 14496-15
866 int apply_defdispwin;
868 int active_seq_parameter_set_id;
870 int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
873 /** frame packing arrangement variables */
874 int sei_frame_packing_present;
875 int frame_packing_arrangement_type;
876 int content_interpretation_type;
877 int quincunx_subsampling;
879 /** display orientation */
880 int sei_display_orientation_present;
881 int sei_anticlockwise_rotation;
882 int sei_hflip, sei_vflip;
886 uint8_t* a53_caption;
887 int a53_caption_size;
889 /** mastering display */
890 int sei_mastering_display_info_present;
891 uint16_t display_primaries[3][2];
892 uint16_t white_point[2];
893 uint32_t max_mastering_luminance;
894 uint32_t min_mastering_luminance;
898 int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,
899 ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header);
902 * Parse the SPS from the bitstream into the provided HEVCSPS struct.
904 * @param sps_id the SPS id will be written here
905 * @param apply_defdispwin if set 1, the default display window from the VUI
906 * will be applied to the video dimensions
907 * @param vps_list if non-NULL, this function will validate that the SPS refers
910 int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
911 int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx);
913 int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx,
915 int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx,
916 HEVCParamSets *ps, int apply_defdispwin);
917 int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
919 int ff_hevc_decode_nal_sei(HEVCContext *s);
922 * Mark all frames in DPB as unused for reference.
924 void ff_hevc_clear_refs(HEVCContext *s);
927 * Drop all frames currently in DPB.
929 void ff_hevc_flush_dpb(HEVCContext *s);
932 * Compute POC of the current frame and return it.
934 int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb);
936 RefPicList *ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *frame,
940 * Construct the reference picture sets for the current frame.
942 int ff_hevc_frame_rps(HEVCContext *s);
945 * Construct the reference picture list(s) for the current slice.
947 int ff_hevc_slice_rpl(HEVCContext *s);
949 void ff_hevc_save_states(HEVCContext *s, int ctb_addr_ts);
950 void ff_hevc_cabac_init(HEVCContext *s, int ctb_addr_ts);
951 int ff_hevc_sao_merge_flag_decode(HEVCContext *s);
952 int ff_hevc_sao_type_idx_decode(HEVCContext *s);
953 int ff_hevc_sao_band_position_decode(HEVCContext *s);
954 int ff_hevc_sao_offset_abs_decode(HEVCContext *s);
955 int ff_hevc_sao_offset_sign_decode(HEVCContext *s);
956 int ff_hevc_sao_eo_class_decode(HEVCContext *s);
957 int ff_hevc_end_of_slice_flag_decode(HEVCContext *s);
958 int ff_hevc_cu_transquant_bypass_flag_decode(HEVCContext *s);
959 int ff_hevc_skip_flag_decode(HEVCContext *s, int x0, int y0,
961 int ff_hevc_pred_mode_decode(HEVCContext *s);
962 int ff_hevc_split_coding_unit_flag_decode(HEVCContext *s, int ct_depth,
964 int ff_hevc_part_mode_decode(HEVCContext *s, int log2_cb_size);
965 int ff_hevc_pcm_flag_decode(HEVCContext *s);
966 int ff_hevc_prev_intra_luma_pred_flag_decode(HEVCContext *s);
967 int ff_hevc_mpm_idx_decode(HEVCContext *s);
968 int ff_hevc_rem_intra_luma_pred_mode_decode(HEVCContext *s);
969 int ff_hevc_intra_chroma_pred_mode_decode(HEVCContext *s);
970 int ff_hevc_merge_idx_decode(HEVCContext *s);
971 int ff_hevc_merge_flag_decode(HEVCContext *s);
972 int ff_hevc_inter_pred_idc_decode(HEVCContext *s, int nPbW, int nPbH);
973 int ff_hevc_ref_idx_lx_decode(HEVCContext *s, int num_ref_idx_lx);
974 int ff_hevc_mvp_lx_flag_decode(HEVCContext *s);
975 int ff_hevc_no_residual_syntax_flag_decode(HEVCContext *s);
976 int ff_hevc_split_transform_flag_decode(HEVCContext *s, int log2_trafo_size);
977 int ff_hevc_cbf_cb_cr_decode(HEVCContext *s, int trafo_depth);
978 int ff_hevc_cbf_luma_decode(HEVCContext *s, int trafo_depth);
979 int ff_hevc_log2_res_scale_abs(HEVCContext *s, int idx);
980 int ff_hevc_res_scale_sign_flag(HEVCContext *s, int idx);
983 * Get the number of candidate references for the current frame.
985 int ff_hevc_frame_nb_refs(HEVCContext *s);
987 int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc);
990 * Find next frame in output order and put a reference to it in frame.
991 * @return 1 if a frame was output, 0 otherwise
993 int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush);
995 void ff_hevc_bump_frame(HEVCContext *s);
997 void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags);
999 void ff_hevc_set_neighbour_available(HEVCContext *s, int x0, int y0,
1000 int nPbW, int nPbH);
1001 void ff_hevc_luma_mv_merge_mode(HEVCContext *s, int x0, int y0,
1002 int nPbW, int nPbH, int log2_cb_size,
1003 int part_idx, int merge_idx, MvField *mv);
1004 void ff_hevc_luma_mv_mvp_mode(HEVCContext *s, int x0, int y0,
1005 int nPbW, int nPbH, int log2_cb_size,
1006 int part_idx, int merge_idx,
1007 MvField *mv, int mvp_lx_flag, int LX);
1008 void ff_hevc_set_qPy(HEVCContext *s, int xBase, int yBase,
1010 void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0,
1011 int log2_trafo_size);
1012 int ff_hevc_cu_qp_delta_sign_flag(HEVCContext *s);
1013 int ff_hevc_cu_qp_delta_abs(HEVCContext *s);
1014 int ff_hevc_cu_chroma_qp_offset_flag(HEVCContext *s);
1015 int ff_hevc_cu_chroma_qp_offset_idx(HEVCContext *s);
1016 void ff_hevc_hls_filter(HEVCContext *s, int x, int y, int ctb_size);
1017 void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size);
1018 void ff_hevc_hls_residual_coding(HEVCContext *s, int x0, int y0,
1019 int log2_trafo_size, enum ScanType scan_idx,
1022 void ff_hevc_hls_mvd_coding(HEVCContext *s, int x0, int y0, int log2_cb_size);
1025 int ff_hevc_encode_nal_vps(HEVCVPS *vps, unsigned int id,
1026 uint8_t *buf, int buf_size);
1029 * Reset SEI values that are stored on the Context.
1030 * e.g. Caption data that was extracted during NAL
1033 * @param s HEVCContext.
1035 void ff_hevc_reset_sei(HEVCContext *s);
1037 extern const uint8_t ff_hevc_qpel_extra_before[4];
1038 extern const uint8_t ff_hevc_qpel_extra_after[4];
1039 extern const uint8_t ff_hevc_qpel_extra[4];
1041 #endif /* AVCODEC_HEVCDEC_H */