X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fhevc.h;h=bb4f6605866a2c23cb1f837ce5d3fcc30fc93fd6;hb=c2fa6bb0e8703a7a6aa10e11f9ab36094416d83f;hp=c6e05bc0bbe3b29fd67aa06a31ce3d1d192450da;hpb=d82e1adc2019135a2fc45372e0ed0b5ef107cdd0;p=ffmpeg diff --git a/libavcodec/hevc.h b/libavcodec/hevc.h index c6e05bc0bbe..bb4f6605866 100644 --- a/libavcodec/hevc.h +++ b/libavcodec/hevc.h @@ -1,7 +1,5 @@ /* - * HEVC video decoder - * - * Copyright (C) 2012 - 2013 Guillaume Martres + * HEVC shared code * * This file is part of Libav. * @@ -23,1026 +21,56 @@ #ifndef AVCODEC_HEVC_H #define AVCODEC_HEVC_H -#include -#include - -#include "libavutil/buffer.h" -#include "libavutil/md5.h" - -#include "avcodec.h" -#include "bswapdsp.h" -#include "cabac.h" -#include "get_bits.h" -#include "hevcdsp.h" -#include "internal.h" -#include "thread.h" -#include "videodsp.h" - -#define MAX_DPB_SIZE 16 // A.4.1 -#define MAX_REFS 16 - -/** - * 7.4.2.1 - */ -#define MAX_SUB_LAYERS 7 -#define MAX_VPS_COUNT 16 -#define MAX_SPS_COUNT 32 -#define MAX_PPS_COUNT 256 -#define MAX_SHORT_TERM_RPS_COUNT 64 -#define MAX_CU_SIZE 128 - -//TODO: check if this is really the maximum -#define MAX_TRANSFORM_DEPTH 5 - -#define MAX_TB_SIZE 32 -#define MAX_PB_SIZE 64 -#define MAX_LOG2_CTB_SIZE 6 -#define MAX_QP 51 -#define DEFAULT_INTRA_TC_OFFSET 2 - -#define HEVC_CONTEXTS 183 - -#define MRG_MAX_NUM_CANDS 5 - -#define L0 0 -#define L1 1 - -#define EPEL_EXTRA_BEFORE 1 -#define EPEL_EXTRA_AFTER 2 -#define EPEL_EXTRA 3 - -#define EDGE_EMU_BUFFER_STRIDE 80 - -/** - * Value of the luma sample at position (x, y) in the 2D array tab. - */ -#define SAMPLE(tab, x, y) ((tab)[(y) * s->sps->width + (x)]) -#define SAMPLE_CTB(tab, x, y) ((tab)[(y) * min_cb_width + (x)]) - -#define IS_IDR(s) (s->nal_unit_type == NAL_IDR_W_RADL || s->nal_unit_type == NAL_IDR_N_LP) -#define IS_BLA(s) (s->nal_unit_type == NAL_BLA_W_RADL || s->nal_unit_type == NAL_BLA_W_LP || \ - s->nal_unit_type == NAL_BLA_N_LP) -#define IS_IRAP(s) (s->nal_unit_type >= 16 && s->nal_unit_type <= 23) - -#define FFUDIV(a,b) (((a) > 0 ? (a) : (a) - (b) + 1) / (b)) -#define FFUMOD(a,b) ((a) - (b) * FFUDIV(a,b)) - /** * Table 7-3: NAL unit type codes */ -enum NALUnitType { - NAL_TRAIL_N = 0, - NAL_TRAIL_R = 1, - NAL_TSA_N = 2, - NAL_TSA_R = 3, - NAL_STSA_N = 4, - NAL_STSA_R = 5, - NAL_RADL_N = 6, - NAL_RADL_R = 7, - NAL_RASL_N = 8, - NAL_RASL_R = 9, - NAL_BLA_W_LP = 16, - NAL_BLA_W_RADL = 17, - NAL_BLA_N_LP = 18, - NAL_IDR_W_RADL = 19, - NAL_IDR_N_LP = 20, - NAL_CRA_NUT = 21, - NAL_VPS = 32, - NAL_SPS = 33, - NAL_PPS = 34, - NAL_AUD = 35, - NAL_EOS_NUT = 36, - NAL_EOB_NUT = 37, - NAL_FD_NUT = 38, - NAL_SEI_PREFIX = 39, - NAL_SEI_SUFFIX = 40, -}; - -enum RPSType { - ST_CURR_BEF = 0, - ST_CURR_AFT, - ST_FOLL, - LT_CURR, - LT_FOLL, - NB_RPS_TYPE, -}; - -enum SliceType { - B_SLICE = 0, - P_SLICE = 1, - I_SLICE = 2, -}; - -enum SyntaxElement { - SAO_MERGE_FLAG = 0, - SAO_TYPE_IDX, - SAO_EO_CLASS, - SAO_BAND_POSITION, - SAO_OFFSET_ABS, - SAO_OFFSET_SIGN, - END_OF_SLICE_FLAG, - SPLIT_CODING_UNIT_FLAG, - CU_TRANSQUANT_BYPASS_FLAG, - SKIP_FLAG, - CU_QP_DELTA, - PRED_MODE_FLAG, - PART_MODE, - PCM_FLAG, - PREV_INTRA_LUMA_PRED_FLAG, - MPM_IDX, - REM_INTRA_LUMA_PRED_MODE, - INTRA_CHROMA_PRED_MODE, - MERGE_FLAG, - MERGE_IDX, - INTER_PRED_IDC, - REF_IDX_L0, - REF_IDX_L1, - ABS_MVD_GREATER0_FLAG, - ABS_MVD_GREATER1_FLAG, - ABS_MVD_MINUS2, - MVD_SIGN_FLAG, - MVP_LX_FLAG, - NO_RESIDUAL_DATA_FLAG, - SPLIT_TRANSFORM_FLAG, - CBF_LUMA, - CBF_CB_CR, - TRANSFORM_SKIP_FLAG, - LAST_SIGNIFICANT_COEFF_X_PREFIX, - LAST_SIGNIFICANT_COEFF_Y_PREFIX, - LAST_SIGNIFICANT_COEFF_X_SUFFIX, - LAST_SIGNIFICANT_COEFF_Y_SUFFIX, - SIGNIFICANT_COEFF_GROUP_FLAG, - SIGNIFICANT_COEFF_FLAG, - COEFF_ABS_LEVEL_GREATER1_FLAG, - COEFF_ABS_LEVEL_GREATER2_FLAG, - COEFF_ABS_LEVEL_REMAINING, - COEFF_SIGN_FLAG, +enum HEVCNALUnitType { + HEVC_NAL_TRAIL_N = 0, + HEVC_NAL_TRAIL_R = 1, + HEVC_NAL_TSA_N = 2, + HEVC_NAL_TSA_R = 3, + HEVC_NAL_STSA_N = 4, + HEVC_NAL_STSA_R = 5, + HEVC_NAL_RADL_N = 6, + HEVC_NAL_RADL_R = 7, + HEVC_NAL_RASL_N = 8, + HEVC_NAL_RASL_R = 9, + HEVC_NAL_BLA_W_LP = 16, + HEVC_NAL_BLA_W_RADL = 17, + HEVC_NAL_BLA_N_LP = 18, + HEVC_NAL_IDR_W_RADL = 19, + HEVC_NAL_IDR_N_LP = 20, + HEVC_NAL_CRA_NUT = 21, + HEVC_NAL_VPS = 32, + HEVC_NAL_SPS = 33, + HEVC_NAL_PPS = 34, + HEVC_NAL_AUD = 35, + HEVC_NAL_EOS_NUT = 36, + HEVC_NAL_EOB_NUT = 37, + HEVC_NAL_FD_NUT = 38, + HEVC_NAL_SEI_PREFIX = 39, + HEVC_NAL_SEI_SUFFIX = 40, }; -enum PartMode { - PART_2Nx2N = 0, - PART_2NxN = 1, - PART_Nx2N = 2, - PART_NxN = 3, - PART_2NxnU = 4, - PART_2NxnD = 5, - PART_nLx2N = 6, - PART_nRx2N = 7, +enum HEVCSliceType { + HEVC_SLICE_B = 0, + HEVC_SLICE_P = 1, + HEVC_SLICE_I = 2, }; -enum PredMode { - MODE_INTER = 0, - MODE_INTRA, - MODE_SKIP, -}; - -enum InterPredIdc { - PRED_L0 = 0, - PRED_L1, - PRED_BI, -}; - -enum IntraPredMode { - INTRA_PLANAR = 0, - INTRA_DC, - INTRA_ANGULAR_2, - INTRA_ANGULAR_3, - INTRA_ANGULAR_4, - INTRA_ANGULAR_5, - INTRA_ANGULAR_6, - INTRA_ANGULAR_7, - INTRA_ANGULAR_8, - INTRA_ANGULAR_9, - INTRA_ANGULAR_10, - INTRA_ANGULAR_11, - INTRA_ANGULAR_12, - INTRA_ANGULAR_13, - INTRA_ANGULAR_14, - INTRA_ANGULAR_15, - INTRA_ANGULAR_16, - INTRA_ANGULAR_17, - INTRA_ANGULAR_18, - INTRA_ANGULAR_19, - INTRA_ANGULAR_20, - INTRA_ANGULAR_21, - INTRA_ANGULAR_22, - INTRA_ANGULAR_23, - INTRA_ANGULAR_24, - INTRA_ANGULAR_25, - INTRA_ANGULAR_26, - INTRA_ANGULAR_27, - INTRA_ANGULAR_28, - INTRA_ANGULAR_29, - INTRA_ANGULAR_30, - INTRA_ANGULAR_31, - INTRA_ANGULAR_32, - INTRA_ANGULAR_33, - INTRA_ANGULAR_34, -}; - -enum SAOType { - SAO_NOT_APPLIED = 0, - SAO_BAND, - SAO_EDGE, -}; - -enum SAOEOClass { - SAO_EO_HORIZ = 0, - SAO_EO_VERT, - SAO_EO_135D, - SAO_EO_45D, -}; - -enum ScanType { - SCAN_DIAG = 0, - SCAN_HORIZ, - SCAN_VERT, -}; - -typedef struct ShortTermRPS { - unsigned int num_negative_pics; - int num_delta_pocs; - int32_t delta_poc[32]; - uint8_t used[32]; -} ShortTermRPS; - -typedef struct LongTermRPS { - int poc[32]; - uint8_t used[32]; - uint8_t nb_refs; -} LongTermRPS; - -typedef struct RefPicList { - struct HEVCFrame *ref[MAX_REFS]; - int list[MAX_REFS]; - int isLongTerm[MAX_REFS]; - int nb_refs; -} RefPicList; - -typedef struct RefPicListTab { - RefPicList refPicList[2]; -} RefPicListTab; - -typedef struct HEVCWindow { - unsigned int left_offset; - unsigned int right_offset; - unsigned int top_offset; - unsigned int bottom_offset; -} HEVCWindow; - -typedef struct VUI { - AVRational sar; - - int overscan_info_present_flag; - int overscan_appropriate_flag; - - int video_signal_type_present_flag; - int video_format; - int video_full_range_flag; - int colour_description_present_flag; - uint8_t colour_primaries; - uint8_t transfer_characteristic; - uint8_t matrix_coeffs; - - int chroma_loc_info_present_flag; - int chroma_sample_loc_type_top_field; - int chroma_sample_loc_type_bottom_field; - int neutra_chroma_indication_flag; - - int field_seq_flag; - int frame_field_info_present_flag; - - int default_display_window_flag; - HEVCWindow def_disp_win; - - int vui_timing_info_present_flag; - uint32_t vui_num_units_in_tick; - uint32_t vui_time_scale; - int vui_poc_proportional_to_timing_flag; - int vui_num_ticks_poc_diff_one_minus1; - int vui_hrd_parameters_present_flag; - - int bitstream_restriction_flag; - int tiles_fixed_structure_flag; - int motion_vectors_over_pic_boundaries_flag; - int restricted_ref_pic_lists_flag; - int min_spatial_segmentation_idc; - int max_bytes_per_pic_denom; - int max_bits_per_min_cu_denom; - int log2_max_mv_length_horizontal; - int log2_max_mv_length_vertical; -} VUI; - -typedef struct PTLCommon { - uint8_t profile_space; - uint8_t tier_flag; - uint8_t profile_idc; - uint8_t profile_compatibility_flag[32]; - uint8_t level_idc; - uint8_t progressive_source_flag; - uint8_t interlaced_source_flag; - uint8_t non_packed_constraint_flag; - uint8_t frame_only_constraint_flag; -} PTLCommon; - -typedef struct PTL { - PTLCommon general_ptl; - PTLCommon sub_layer_ptl[MAX_SUB_LAYERS]; - - uint8_t sub_layer_profile_present_flag[MAX_SUB_LAYERS]; - uint8_t sub_layer_level_present_flag[MAX_SUB_LAYERS]; -} PTL; - -typedef struct HEVCVPS { - uint8_t vps_temporal_id_nesting_flag; - int vps_max_layers; - int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1 - - PTL ptl; - int vps_sub_layer_ordering_info_present_flag; - unsigned int vps_max_dec_pic_buffering[MAX_SUB_LAYERS]; - unsigned int vps_num_reorder_pics[MAX_SUB_LAYERS]; - unsigned int vps_max_latency_increase[MAX_SUB_LAYERS]; - int vps_max_layer_id; - int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1 - uint8_t vps_timing_info_present_flag; - uint32_t vps_num_units_in_tick; - uint32_t vps_time_scale; - uint8_t vps_poc_proportional_to_timing_flag; - int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1 - int vps_num_hrd_parameters; -} HEVCVPS; - -typedef struct ScalingList { - /* This is a little wasteful, since sizeID 0 only needs 8 coeffs, - * and size ID 3 only has 2 arrays, not 6. */ - uint8_t sl[4][6][64]; - uint8_t sl_dc[2][6]; -} ScalingList; - -typedef struct HEVCSPS { - int vps_id; - int chroma_format_idc; - uint8_t separate_colour_plane_flag; - - ///< output (i.e. cropped) values - int output_width, output_height; - HEVCWindow output_window; - - HEVCWindow pic_conf_win; - - int bit_depth; - int pixel_shift; - enum AVPixelFormat pix_fmt; - - unsigned int log2_max_poc_lsb; - int pcm_enabled_flag; - - int max_sub_layers; - struct { - int max_dec_pic_buffering; - int num_reorder_pics; - int max_latency_increase; - } temporal_layer[MAX_SUB_LAYERS]; - - VUI vui; - PTL ptl; - - uint8_t scaling_list_enable_flag; - ScalingList scaling_list; - - unsigned int nb_st_rps; - ShortTermRPS st_rps[MAX_SHORT_TERM_RPS_COUNT]; - - uint8_t amp_enabled_flag; - uint8_t sao_enabled; - - uint8_t long_term_ref_pics_present_flag; - uint16_t lt_ref_pic_poc_lsb_sps[32]; - uint8_t used_by_curr_pic_lt_sps_flag[32]; - uint8_t num_long_term_ref_pics_sps; - - struct { - uint8_t bit_depth; - uint8_t bit_depth_chroma; - unsigned int log2_min_pcm_cb_size; - unsigned int log2_max_pcm_cb_size; - uint8_t loop_filter_disable_flag; - } pcm; - uint8_t sps_temporal_mvp_enabled_flag; - uint8_t sps_strong_intra_smoothing_enable_flag; - - unsigned int log2_min_cb_size; - unsigned int log2_diff_max_min_coding_block_size; - unsigned int log2_min_tb_size; - unsigned int log2_max_trafo_size; - unsigned int log2_ctb_size; - unsigned int log2_min_pu_size; - - int max_transform_hierarchy_depth_inter; - int max_transform_hierarchy_depth_intra; - - ///< coded frame dimension in various units - int width; - int height; - int ctb_width; - int ctb_height; - int ctb_size; - int min_cb_width; - int min_cb_height; - int min_tb_width; - int min_tb_height; - int min_pu_width; - int min_pu_height; - - int hshift[3]; - int vshift[3]; - - int qp_bd_offset; -} HEVCSPS; - -typedef struct HEVCPPS { - unsigned int sps_id; ///< seq_parameter_set_id - - uint8_t sign_data_hiding_flag; - - uint8_t cabac_init_present_flag; - - int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1 - int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1 - int pic_init_qp_minus26; - - uint8_t constrained_intra_pred_flag; - uint8_t transform_skip_enabled_flag; - - uint8_t cu_qp_delta_enabled_flag; - int diff_cu_qp_delta_depth; - - int cb_qp_offset; - int cr_qp_offset; - uint8_t pic_slice_level_chroma_qp_offsets_present_flag; - uint8_t weighted_pred_flag; - uint8_t weighted_bipred_flag; - uint8_t output_flag_present_flag; - uint8_t transquant_bypass_enable_flag; - - uint8_t dependent_slice_segments_enabled_flag; - uint8_t tiles_enabled_flag; - uint8_t entropy_coding_sync_enabled_flag; - - int num_tile_columns; ///< num_tile_columns_minus1 + 1 - int num_tile_rows; ///< num_tile_rows_minus1 + 1 - uint8_t uniform_spacing_flag; - uint8_t loop_filter_across_tiles_enabled_flag; - - uint8_t seq_loop_filter_across_slices_enabled_flag; - - uint8_t deblocking_filter_control_present_flag; - uint8_t deblocking_filter_override_enabled_flag; - uint8_t disable_dbf; - int beta_offset; ///< beta_offset_div2 * 2 - int tc_offset; ///< tc_offset_div2 * 2 - - uint8_t scaling_list_data_present_flag; - ScalingList scaling_list; - - uint8_t lists_modification_present_flag; - int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2 - int num_extra_slice_header_bits; - uint8_t slice_header_extension_present_flag; - - // Inferred parameters - unsigned int *column_width; ///< ColumnWidth - unsigned int *row_height; ///< RowHeight - unsigned int *col_bd; ///< ColBd - unsigned int *row_bd; ///< RowBd - int *col_idxX; - - int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS - int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS - int *tile_id; ///< TileId - int *tile_pos_rs; ///< TilePosRS - int *min_tb_addr_zs; ///< MinTbAddrZS -} HEVCPPS; - -typedef struct HEVCParamSets { - AVBufferRef *vps_list[MAX_VPS_COUNT]; - AVBufferRef *sps_list[MAX_SPS_COUNT]; - AVBufferRef *pps_list[MAX_PPS_COUNT]; - - /* currently active parameter sets */ - const HEVCVPS *vps; - const HEVCSPS *sps; - const HEVCPPS *pps; -} HEVCParamSets; - -typedef struct SliceHeader { - unsigned int pps_id; - - ///< address (in raster order) of the first block in the current slice segment - unsigned int slice_segment_addr; - ///< address (in raster order) of the first block in the current slice - unsigned int slice_addr; - - enum SliceType slice_type; - - int pic_order_cnt_lsb; - - uint8_t first_slice_in_pic_flag; - uint8_t dependent_slice_segment_flag; - uint8_t pic_output_flag; - uint8_t colour_plane_id; - - ///< RPS coded in the slice header itself is stored here - int short_term_ref_pic_set_sps_flag; - int short_term_ref_pic_set_size; - ShortTermRPS slice_rps; - const ShortTermRPS *short_term_rps; - LongTermRPS long_term_rps; - unsigned int list_entry_lx[2][32]; - - uint8_t rpl_modification_flag[2]; - uint8_t no_output_of_prior_pics_flag; - uint8_t slice_temporal_mvp_enabled_flag; - - unsigned int nb_refs[2]; - - uint8_t slice_sample_adaptive_offset_flag[3]; - uint8_t mvd_l1_zero_flag; - - uint8_t cabac_init_flag; - uint8_t disable_deblocking_filter_flag; ///< slice_header_disable_deblocking_filter_flag - uint8_t slice_loop_filter_across_slices_enabled_flag; - uint8_t collocated_list; - - unsigned int collocated_ref_idx; - - int slice_qp_delta; - int slice_cb_qp_offset; - int slice_cr_qp_offset; - - int beta_offset; ///< beta_offset_div2 * 2 - int tc_offset; ///< tc_offset_div2 * 2 - - unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand - - int num_entry_point_offsets; - - int8_t slice_qp; - - uint8_t luma_log2_weight_denom; - int16_t chroma_log2_weight_denom; - - int16_t luma_weight_l0[16]; - int16_t chroma_weight_l0[16][2]; - int16_t chroma_weight_l1[16][2]; - int16_t luma_weight_l1[16]; - - int16_t luma_offset_l0[16]; - int16_t chroma_offset_l0[16][2]; - - int16_t luma_offset_l1[16]; - int16_t chroma_offset_l1[16][2]; - - int slice_ctb_addr_rs; -} SliceHeader; - -typedef struct CodingTree { - int depth; ///< ctDepth -} CodingTree; - -typedef struct CodingUnit { - int x; - int y; - - enum PredMode pred_mode; ///< PredMode - enum PartMode part_mode; ///< PartMode - - // Inferred parameters - uint8_t intra_split_flag; ///< IntraSplitFlag - uint8_t max_trafo_depth; ///< MaxTrafoDepth - uint8_t cu_transquant_bypass_flag; -} CodingUnit; - -typedef struct Mv { - int16_t x; ///< horizontal component of motion vector - int16_t y; ///< vertical component of motion vector -} Mv; - -typedef struct MvField { - DECLARE_ALIGNED(4, Mv, mv)[2]; - int8_t ref_idx[2]; - int8_t pred_flag[2]; - uint8_t is_intra; -} MvField; - -typedef struct NeighbourAvailable { - int cand_bottom_left; - int cand_left; - int cand_up; - int cand_up_left; - int cand_up_right; - int cand_up_right_sap; -} NeighbourAvailable; - -typedef struct PredictionUnit { - int mpm_idx; - int rem_intra_luma_pred_mode; - uint8_t intra_pred_mode[4]; - Mv mvd; - uint8_t merge_flag; - uint8_t intra_pred_mode_c; -} PredictionUnit; - -typedef struct TransformUnit { - int cu_qp_delta; - - // Inferred parameters; - int cur_intra_pred_mode; - uint8_t is_cu_qp_delta_coded; -} TransformUnit; - -typedef struct DBParams { - int beta_offset; - int tc_offset; -} DBParams; - -#define HEVC_FRAME_FLAG_OUTPUT (1 << 0) -#define HEVC_FRAME_FLAG_SHORT_REF (1 << 1) -#define HEVC_FRAME_FLAG_LONG_REF (1 << 2) - -typedef struct HEVCFrame { - AVFrame *frame; - ThreadFrame tf; - MvField *tab_mvf; - RefPicList *refPicList; - RefPicListTab **rpl_tab; - int ctb_count; - int poc; - struct HEVCFrame *collocated_ref; - - HEVCWindow window; - - AVBufferRef *tab_mvf_buf; - AVBufferRef *rpl_tab_buf; - AVBufferRef *rpl_buf; - - AVBufferRef *hwaccel_priv_buf; - void *hwaccel_picture_private; - - /** - * A sequence counter, so that old frames are output first - * after a POC reset - */ - uint16_t sequence; - - /** - * A combination of HEVC_FRAME_FLAG_* - */ - uint8_t flags; -} HEVCFrame; - -typedef struct HEVCNAL { - uint8_t *rbsp_buffer; - int rbsp_buffer_size; - - int size; - const uint8_t *data; - - int raw_size; - const uint8_t *raw_data; - - GetBitContext gb; - - enum NALUnitType type; - int temporal_id; -} HEVCNAL; - -/* an input packet split into unescaped NAL units */ -typedef struct HEVCPacket { - HEVCNAL *nals; - int nb_nals; - int nals_allocated; -} HEVCPacket; - -struct HEVCContext; - -typedef struct HEVCPredContext { - void (*intra_pred[4])(struct HEVCContext *s, int x0, int y0, int c_idx); - - void (*pred_planar[4])(uint8_t *src, const uint8_t *top, - const uint8_t *left, ptrdiff_t stride); - void (*pred_dc)(uint8_t *src, const uint8_t *top, const uint8_t *left, - ptrdiff_t stride, int log2_size, int c_idx); - void (*pred_angular[4])(uint8_t *src, const uint8_t *top, - const uint8_t *left, ptrdiff_t stride, - int c_idx, int mode); -} HEVCPredContext; - -typedef struct HEVCLocalContext { - DECLARE_ALIGNED(16, int16_t, mc_buffer[(MAX_PB_SIZE + 7) * MAX_PB_SIZE]); - uint8_t cabac_state[HEVC_CONTEXTS]; - - uint8_t first_qp_group; - - GetBitContext gb; - CABACContext cc; - - int8_t qp_y; - int8_t curr_qp_y; - - TransformUnit tu; - - uint8_t ctb_left_flag; - uint8_t ctb_up_flag; - uint8_t ctb_up_right_flag; - uint8_t ctb_up_left_flag; - int start_of_tiles_x; - int end_of_tiles_x; - int end_of_tiles_y; - /* +7 is for subpixel interpolation, *2 for high bit depths */ - DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2]; - CodingTree ct; - CodingUnit cu; - PredictionUnit pu; - NeighbourAvailable na; - -#define BOUNDARY_LEFT_SLICE (1 << 0) -#define BOUNDARY_LEFT_TILE (1 << 1) -#define BOUNDARY_UPPER_SLICE (1 << 2) -#define BOUNDARY_UPPER_TILE (1 << 3) - /* properties of the boundary of the current CTB for the purposes - * of the deblocking filter */ - int boundary_flags; -} HEVCLocalContext; - -typedef struct HEVCContext { - const AVClass *c; // needed by private avoptions - AVCodecContext *avctx; - - HEVCLocalContext HEVClc; - - uint8_t cabac_state[HEVC_CONTEXTS]; - - /** 1 if the independent slice segment header was successfully parsed */ - uint8_t slice_initialized; - - AVFrame *frame; - AVFrame *sao_frame; - AVFrame *tmp_frame; - AVFrame *output_frame; - - HEVCParamSets ps; - - AVBufferPool *tab_mvf_pool; - AVBufferPool *rpl_tab_pool; - - ///< candidate references for the current frame - RefPicList rps[5]; - - SliceHeader sh; - SAOParams *sao; - DBParams *deblock; - enum NALUnitType nal_unit_type; - int temporal_id; ///< temporal_id_plus1 - 1 - HEVCFrame *ref; - HEVCFrame DPB[32]; - int poc; - int pocTid0; - int slice_idx; ///< number of the slice being currently decoded - int eos; ///< current packet contains an EOS/EOB NAL - int max_ra; - int bs_width; - int bs_height; - - int is_decoded; - - HEVCPredContext hpc; - HEVCDSPContext hevcdsp; - VideoDSPContext vdsp; - BswapDSPContext bdsp; - int8_t *qp_y_tab; - uint8_t *horizontal_bs; - uint8_t *vertical_bs; - - int32_t *tab_slice_address; - - // CU - uint8_t *skip_flag; - uint8_t *tab_ct_depth; - // PU - uint8_t *tab_ipm; - - uint8_t *cbf_luma; // cbf_luma of colocated TU - uint8_t *is_pcm; - - // CTB-level flags affecting loop filter operation - uint8_t *filter_slice_edges; - - /** used on BE to byteswap the lines for checksumming */ - uint8_t *checksum_buf; - int checksum_buf_size; - - /** - * Sequence counters for decoded and output frames, so that old - * frames are output first after a POC reset - */ - uint16_t seq_decode; - uint16_t seq_output; - - HEVCPacket pkt; - // type of the first VCL NAL of the current frame - enum NALUnitType first_nal_type; - - // for checking the frame checksums - struct AVMD5 *md5_ctx; - uint8_t md5[3][16]; - uint8_t is_md5; - - uint8_t context_initialized; - uint8_t is_nalff; ///< this flag is != 0 if bitstream is encapsulated - ///< as a format defined in 14496-15 - int apply_defdispwin; - - int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4) - int nuh_layer_id; - - /** frame packing arrangement variables */ - int sei_frame_packing_present; - int frame_packing_arrangement_type; - int content_interpretation_type; - int quincunx_subsampling; - - /** display orientation */ - int sei_display_orientation_present; - int sei_anticlockwise_rotation; - int sei_hflip, sei_vflip; -} HEVCContext; - -int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx, - ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header); - -/** - * Parse the SPS from the bitstream into the provided HEVCSPS struct. - * - * @param sps_id the SPS id will be written here - * @param apply_defdispwin if set 1, the default display window from the VUI - * will be applied to the video dimensions - * @param vps_list if non-NULL, this function will validate that the SPS refers - * to an existing VPS - */ -int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id, - int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx); - -int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx, - HEVCParamSets *ps); -int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx, - HEVCParamSets *ps, int apply_defdispwin); -int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx, - HEVCParamSets *ps); -int ff_hevc_decode_nal_sei(HEVCContext *s); - -/** - * Mark all frames in DPB as unused for reference. - */ -void ff_hevc_clear_refs(HEVCContext *s); - -/** - * Drop all frames currently in DPB. - */ -void ff_hevc_flush_dpb(HEVCContext *s); - -/** - * Compute POC of the current frame and return it. - */ -int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb); - -RefPicList *ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *frame, - int x0, int y0); - -/** - * Construct the reference picture sets for the current frame. - */ -int ff_hevc_frame_rps(HEVCContext *s); - -/** - * Construct the reference picture list(s) for the current slice. - */ -int ff_hevc_slice_rpl(HEVCContext *s); - -void ff_hevc_save_states(HEVCContext *s, int ctb_addr_ts); -void ff_hevc_cabac_init(HEVCContext *s, int ctb_addr_ts); -int ff_hevc_sao_merge_flag_decode(HEVCContext *s); -int ff_hevc_sao_type_idx_decode(HEVCContext *s); -int ff_hevc_sao_band_position_decode(HEVCContext *s); -int ff_hevc_sao_offset_abs_decode(HEVCContext *s); -int ff_hevc_sao_offset_sign_decode(HEVCContext *s); -int ff_hevc_sao_eo_class_decode(HEVCContext *s); -int ff_hevc_end_of_slice_flag_decode(HEVCContext *s); -int ff_hevc_cu_transquant_bypass_flag_decode(HEVCContext *s); -int ff_hevc_skip_flag_decode(HEVCContext *s, int x0, int y0, - int x_cb, int y_cb); -int ff_hevc_pred_mode_decode(HEVCContext *s); -int ff_hevc_split_coding_unit_flag_decode(HEVCContext *s, int ct_depth, - int x0, int y0); -int ff_hevc_part_mode_decode(HEVCContext *s, int log2_cb_size); -int ff_hevc_pcm_flag_decode(HEVCContext *s); -int ff_hevc_prev_intra_luma_pred_flag_decode(HEVCContext *s); -int ff_hevc_mpm_idx_decode(HEVCContext *s); -int ff_hevc_rem_intra_luma_pred_mode_decode(HEVCContext *s); -int ff_hevc_intra_chroma_pred_mode_decode(HEVCContext *s); -int ff_hevc_merge_idx_decode(HEVCContext *s); -int ff_hevc_merge_flag_decode(HEVCContext *s); -int ff_hevc_inter_pred_idc_decode(HEVCContext *s, int nPbW, int nPbH); -int ff_hevc_ref_idx_lx_decode(HEVCContext *s, int num_ref_idx_lx); -int ff_hevc_mvp_lx_flag_decode(HEVCContext *s); -int ff_hevc_no_residual_syntax_flag_decode(HEVCContext *s); -int ff_hevc_abs_mvd_greater0_flag_decode(HEVCContext *s); -int ff_hevc_abs_mvd_greater1_flag_decode(HEVCContext *s); -int ff_hevc_mvd_decode(HEVCContext *s); -int ff_hevc_mvd_sign_flag_decode(HEVCContext *s); -int ff_hevc_split_transform_flag_decode(HEVCContext *s, int log2_trafo_size); -int ff_hevc_cbf_cb_cr_decode(HEVCContext *s, int trafo_depth); -int ff_hevc_cbf_luma_decode(HEVCContext *s, int trafo_depth); -int ff_hevc_transform_skip_flag_decode(HEVCContext *s, int c_idx); -int ff_hevc_last_significant_coeff_x_prefix_decode(HEVCContext *s, int c_idx, - int log2_size); -int ff_hevc_last_significant_coeff_y_prefix_decode(HEVCContext *s, int c_idx, - int log2_size); -int ff_hevc_last_significant_coeff_suffix_decode(HEVCContext *s, - int last_significant_coeff_prefix); -int ff_hevc_significant_coeff_group_flag_decode(HEVCContext *s, int c_idx, - int ctx_cg); -int ff_hevc_significant_coeff_flag_decode(HEVCContext *s, int c_idx, int x_c, - int y_c, int log2_trafo_size, - int scan_idx, int prev_sig); -int ff_hevc_coeff_abs_level_greater1_flag_decode(HEVCContext *s, int c_idx, - int ctx_set); -int ff_hevc_coeff_abs_level_greater2_flag_decode(HEVCContext *s, int c_idx, - int inc); -int ff_hevc_coeff_abs_level_remaining(HEVCContext *s, int base_level, - int rc_rice_param); -int ff_hevc_coeff_sign_flag(HEVCContext *s, uint8_t nb); - -/** - * Get the number of candidate references for the current frame. - */ -int ff_hevc_frame_nb_refs(HEVCContext *s); - -int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc); - /** - * Find next frame in output order and put a reference to it in frame. - * @return 1 if a frame was output, 0 otherwise - */ -int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush); - -void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags); - -void ff_hevc_set_neighbour_available(HEVCContext *s, int x0, int y0, - int nPbW, int nPbH); -void ff_hevc_luma_mv_merge_mode(HEVCContext *s, int x0, int y0, - int nPbW, int nPbH, int log2_cb_size, - int part_idx, int merge_idx, MvField *mv); -void ff_hevc_luma_mv_mvp_mode(HEVCContext *s, int x0, int y0, - int nPbW, int nPbH, int log2_cb_size, - int part_idx, int merge_idx, - MvField *mv, int mvp_lx_flag, int LX); -void ff_hevc_set_qPy(HEVCContext *s, int xC, int yC, int xBase, int yBase, - int log2_cb_size); -void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0, - int log2_trafo_size); -int ff_hevc_cu_qp_delta_sign_flag(HEVCContext *s); -int ff_hevc_cu_qp_delta_abs(HEVCContext *s); -void ff_hevc_hls_filter(HEVCContext *s, int x, int y); -void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size); - -void ff_hevc_pps_free(HEVCPPS **ppps); - -void ff_hevc_pred_init(HEVCPredContext *hpc, int bit_depth); - -/** - * Extract the raw (unescaped) HEVC bitstream. - */ -int ff_hevc_extract_rbsp(const uint8_t *src, int length, - HEVCNAL *nal); - -/** - * Split an input packet into NAL units. + * 7.4.2.1 */ -int ff_hevc_split_packet(HEVCPacket *pkt, const uint8_t *buf, int length, - AVCodecContext *avctx, int is_nalff, int nal_length_size); - -int ff_hevc_encode_nal_vps(HEVCVPS *vps, unsigned int id, - uint8_t *buf, int buf_size); +#define HEVC_MAX_SUB_LAYERS 7 +#define HEVC_MAX_VPS_COUNT 16 +#define HEVC_MAX_SPS_COUNT 32 +#define HEVC_MAX_PPS_COUNT 256 +#define HEVC_MAX_SHORT_TERM_RPS_COUNT 64 +#define HEVC_MAX_CU_SIZE 128 -extern const uint8_t ff_hevc_qpel_extra_before[4]; -extern const uint8_t ff_hevc_qpel_extra_after[4]; -extern const uint8_t ff_hevc_qpel_extra[4]; +#define HEVC_MAX_REFS 16 +#define HEVC_MAX_DPB_SIZE 16 // A.4.1 -extern const uint8_t ff_hevc_diag_scan4x4_x[16]; -extern const uint8_t ff_hevc_diag_scan4x4_y[16]; -extern const uint8_t ff_hevc_diag_scan8x8_x[64]; -extern const uint8_t ff_hevc_diag_scan8x8_y[64]; +#define HEVC_MAX_LOG2_CTB_SIZE 6 #endif /* AVCODEC_HEVC_H */