| /* |
| * Copyright (c) 2016, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| * Media Patent License 1.0 was not distributed with this source code in the |
| * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| */ |
| |
| #ifndef AOM_AV1_ENCODER_SPEED_FEATURES_H_ |
| #define AOM_AV1_ENCODER_SPEED_FEATURES_H_ |
| |
| #include "av1/common/enums.h" |
| #include "av1/encoder/enc_enums.h" |
| #include "av1/encoder/mcomp.h" |
| #include "av1/encoder/encodemb.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /*! @file */ |
| |
| /*!\cond */ |
| #define MAX_MESH_STEP 4 |
| |
| typedef struct MESH_PATTERN { |
| int range; |
| int interval; |
| } MESH_PATTERN; |
| |
| enum { |
| GM_FULL_SEARCH, |
| GM_REDUCED_REF_SEARCH_SKIP_L2_L3, |
| GM_REDUCED_REF_SEARCH_SKIP_L2_L3_ARF2, |
| |
| // Same as GM_REDUCED_REF_SEARCH_SKIP_L2_L3_ARF2 but with extra filtering |
| // to keep at most two ref frames |
| GM_SEARCH_CLOSEST_REFS_ONLY, |
| |
| GM_DISABLE_SEARCH |
| } UENUM1BYTE(GM_SEARCH_TYPE); |
| |
| enum { |
| DIST_WTD_COMP_ENABLED, |
| DIST_WTD_COMP_SKIP_MV_SEARCH, |
| DIST_WTD_COMP_DISABLED, |
| } UENUM1BYTE(DIST_WTD_COMP_FLAG); |
| |
| enum { |
| INTRA_ALL = (1 << DC_PRED) | (1 << V_PRED) | (1 << H_PRED) | (1 << D45_PRED) | |
| (1 << D135_PRED) | (1 << D113_PRED) | (1 << D157_PRED) | |
| (1 << D203_PRED) | (1 << D67_PRED) | (1 << SMOOTH_PRED) | |
| (1 << SMOOTH_V_PRED) | (1 << SMOOTH_H_PRED) | (1 << PAETH_PRED), |
| UV_INTRA_ALL = |
| (1 << UV_DC_PRED) | (1 << UV_V_PRED) | (1 << UV_H_PRED) | |
| (1 << UV_D45_PRED) | (1 << UV_D135_PRED) | (1 << UV_D113_PRED) | |
| (1 << UV_D157_PRED) | (1 << UV_D203_PRED) | (1 << UV_D67_PRED) | |
| (1 << UV_SMOOTH_PRED) | (1 << UV_SMOOTH_V_PRED) | |
| (1 << UV_SMOOTH_H_PRED) | (1 << UV_PAETH_PRED) | (1 << UV_CFL_PRED), |
| UV_INTRA_DC = (1 << UV_DC_PRED), |
| UV_INTRA_DC_CFL = (1 << UV_DC_PRED) | (1 << UV_CFL_PRED), |
| UV_INTRA_DC_TM = (1 << UV_DC_PRED) | (1 << UV_PAETH_PRED), |
| UV_INTRA_DC_PAETH_CFL = |
| (1 << UV_DC_PRED) | (1 << UV_PAETH_PRED) | (1 << UV_CFL_PRED), |
| UV_INTRA_DC_H_V = (1 << UV_DC_PRED) | (1 << UV_V_PRED) | (1 << UV_H_PRED), |
| UV_INTRA_DC_H_V_CFL = (1 << UV_DC_PRED) | (1 << UV_V_PRED) | |
| (1 << UV_H_PRED) | (1 << UV_CFL_PRED), |
| UV_INTRA_DC_PAETH_H_V = (1 << UV_DC_PRED) | (1 << UV_PAETH_PRED) | |
| (1 << UV_V_PRED) | (1 << UV_H_PRED), |
| UV_INTRA_DC_PAETH_H_V_CFL = (1 << UV_DC_PRED) | (1 << UV_PAETH_PRED) | |
| (1 << UV_V_PRED) | (1 << UV_H_PRED) | |
| (1 << UV_CFL_PRED), |
| INTRA_DC = (1 << DC_PRED), |
| INTRA_DC_TM = (1 << DC_PRED) | (1 << PAETH_PRED), |
| INTRA_DC_H_V = (1 << DC_PRED) | (1 << V_PRED) | (1 << H_PRED), |
| INTRA_DC_H_V_SMOOTH = |
| (1 << DC_PRED) | (1 << V_PRED) | (1 << H_PRED) | (1 << SMOOTH_PRED), |
| INTRA_DC_PAETH_H_V = |
| (1 << DC_PRED) | (1 << PAETH_PRED) | (1 << V_PRED) | (1 << H_PRED) |
| }; |
| |
| enum { |
| INTER_ALL = (1 << NEARESTMV) | (1 << NEARMV) | (1 << GLOBALMV) | |
| (1 << NEWMV) | (1 << NEAREST_NEARESTMV) | (1 << NEAR_NEARMV) | |
| (1 << NEW_NEWMV) | (1 << NEAREST_NEWMV) | (1 << NEAR_NEWMV) | |
| (1 << NEW_NEARMV) | (1 << NEW_NEARESTMV) | (1 << GLOBAL_GLOBALMV), |
| INTER_NEAREST_NEAR_ZERO = (1 << NEARESTMV) | (1 << NEARMV) | (1 << GLOBALMV) | |
| (1 << NEAREST_NEARESTMV) | (1 << GLOBAL_GLOBALMV) | |
| (1 << NEAREST_NEWMV) | (1 << NEW_NEARESTMV) | |
| (1 << NEW_NEARMV) | (1 << NEAR_NEWMV) | |
| (1 << NEAR_NEARMV), |
| }; |
| |
| enum { |
| DISABLE_ALL_INTER_SPLIT = (1 << THR_COMP_GA) | (1 << THR_COMP_LA) | |
| (1 << THR_ALTR) | (1 << THR_GOLD) | (1 << THR_LAST), |
| |
| DISABLE_ALL_SPLIT = (1 << THR_INTRA) | DISABLE_ALL_INTER_SPLIT, |
| |
| DISABLE_COMPOUND_SPLIT = (1 << THR_COMP_GA) | (1 << THR_COMP_LA), |
| |
| LAST_AND_INTRA_SPLIT_ONLY = (1 << THR_COMP_GA) | (1 << THR_COMP_LA) | |
| (1 << THR_ALTR) | (1 << THR_GOLD) |
| }; |
| |
| enum { |
| TXFM_CODING_SF = 1, |
| INTER_PRED_SF = 2, |
| INTRA_PRED_SF = 4, |
| PARTITION_SF = 8, |
| LOOP_FILTER_SF = 16, |
| RD_SKIP_SF = 32, |
| RESERVE_2_SF = 64, |
| RESERVE_3_SF = 128, |
| } UENUM1BYTE(DEV_SPEED_FEATURES); |
| |
| /* This enumeration defines when the rate control recode loop will be |
| * enabled. |
| */ |
| enum { |
| /* |
| * No recodes allowed |
| */ |
| DISALLOW_RECODE = 0, |
| /* |
| * Allow recode only for KF/ARF/GF frames |
| */ |
| ALLOW_RECODE_KFARFGF = 1, |
| /* |
| * Allow recode for all frame types based on bitrate constraints. |
| */ |
| ALLOW_RECODE = 2, |
| } UENUM1BYTE(RECODE_LOOP_TYPE); |
| |
| enum { |
| SUBPEL_TREE = 0, |
| SUBPEL_TREE_PRUNED = 1, // Prunes 1/2-pel searches |
| SUBPEL_TREE_PRUNED_MORE = 2, // Prunes 1/2-pel searches more aggressively |
| SUBPEL_SEARCH_METHODS |
| } UENUM1BYTE(SUBPEL_SEARCH_METHOD); |
| |
| enum { |
| // Try the full image with different values. |
| LPF_PICK_FROM_FULL_IMAGE, |
| // Try the full image filter search with non-dual filter only. |
| LPF_PICK_FROM_FULL_IMAGE_NON_DUAL, |
| // Try a small portion of the image with different values. |
| LPF_PICK_FROM_SUBIMAGE, |
| // Estimate the level based on quantizer and frame type |
| LPF_PICK_FROM_Q, |
| // Pick 0 to disable LPF if LPF was enabled last frame |
| LPF_PICK_MINIMAL_LPF |
| } UENUM1BYTE(LPF_PICK_METHOD); |
| /*!\endcond */ |
| |
| /*!\enum CDEF_PICK_METHOD |
| * \brief This enumeration defines a variety of CDEF pick methods |
| */ |
| typedef enum { |
| CDEF_FULL_SEARCH, /**< Full search */ |
| CDEF_FAST_SEARCH_LVL1, /**< Search among a subset of all possible filters. */ |
| CDEF_FAST_SEARCH_LVL2, /**< Search reduced subset of filters than Level 1. */ |
| CDEF_FAST_SEARCH_LVL3, /**< Search reduced subset of secondary filters than |
| Level 2. */ |
| CDEF_FAST_SEARCH_LVL4, /**< Search reduced subset of filters than Level 3. */ |
| CDEF_FAST_SEARCH_LVL5, /**< Search reduced subset of filters than Level 4. */ |
| CDEF_PICK_FROM_Q, /**< Estimate filter strength based on quantizer. */ |
| CDEF_PICK_METHODS |
| } CDEF_PICK_METHOD; |
| |
| /*!\cond */ |
| enum { |
| // Terminate search early based on distortion so far compared to |
| // qp step, distortion in the neighborhood of the frame, etc. |
| FLAG_EARLY_TERMINATE = 1 << 0, |
| |
| // Skips comp inter modes if the best so far is an intra mode. |
| FLAG_SKIP_COMP_BESTINTRA = 1 << 1, |
| |
| // Skips oblique intra modes if the best so far is an inter mode. |
| FLAG_SKIP_INTRA_BESTINTER = 1 << 3, |
| |
| // Skips oblique intra modes at angles 27, 63, 117, 153 if the best |
| // intra so far is not one of the neighboring directions. |
| FLAG_SKIP_INTRA_DIRMISMATCH = 1 << 4, |
| |
| // Skips intra modes other than DC_PRED if the source variance is small |
| FLAG_SKIP_INTRA_LOWVAR = 1 << 5, |
| } UENUM1BYTE(MODE_SEARCH_SKIP_LOGIC); |
| |
| enum { |
| // No tx type pruning |
| TX_TYPE_PRUNE_0 = 0, |
| // adaptively prunes the least perspective tx types out of all 16 |
| // (tuned to provide negligible quality loss) |
| TX_TYPE_PRUNE_1 = 1, |
| // similar, but applies much more aggressive pruning to get better speed-up |
| TX_TYPE_PRUNE_2 = 2, |
| TX_TYPE_PRUNE_3 = 3, |
| // More aggressive pruning based on tx type score and allowed tx count |
| TX_TYPE_PRUNE_4 = 4, |
| TX_TYPE_PRUNE_5 = 5, |
| } UENUM1BYTE(TX_TYPE_PRUNE_MODE); |
| |
| enum { |
| // No reaction to rate control on a detected slide/scene change. |
| NO_DETECTION = 0, |
| |
| // Set to larger Q based only on the detected slide/scene change and |
| // current/past Q. |
| FAST_DETECTION_MAXQ = 1, |
| } UENUM1BYTE(OVERSHOOT_DETECTION_CBR); |
| |
| enum { |
| // Turns off multi-winner mode. So we will do txfm search on either all modes |
| // if winner mode is off, or we will only on txfm search on a single winner |
| // mode. |
| MULTI_WINNER_MODE_OFF = 0, |
| |
| // Limits the number of winner modes to at most 2 |
| MULTI_WINNER_MODE_FAST = 1, |
| |
| // Uses the default number of winner modes, which is 3 for intra mode, and 1 |
| // for inter mode. |
| MULTI_WINNER_MODE_DEFAULT = 2, |
| |
| // Maximum number of winner modes allowed. |
| MULTI_WINNER_MODE_LEVELS, |
| } UENUM1BYTE(MULTI_WINNER_MODE_TYPE); |
| |
| enum { |
| PRUNE_NEARMV_OFF = 0, // Turn off nearmv pruning |
| PRUNE_NEARMV_LEVEL1 = 1, // Prune nearmv for qindex (0-85) |
| PRUNE_NEARMV_LEVEL2 = 2, // Prune nearmv for qindex (0-170) |
| PRUNE_NEARMV_LEVEL3 = 3, // Prune nearmv more aggressively for qindex (0-170) |
| PRUNE_NEARMV_MAX = PRUNE_NEARMV_LEVEL3, |
| } UENUM1BYTE(PRUNE_NEARMV_LEVEL); |
| |
| enum { |
| // Default Transform search case - used in evaluation of compound type mode |
| // and best inter candidates |
| TX_SEARCH_DEFAULT = 0, |
| // Transform search in motion mode rd |
| TX_SEARCH_MOTION_MODE, |
| // All transform search cases |
| TX_SEARCH_CASES |
| } UENUM1BYTE(TX_SEARCH_CASE); |
| |
| typedef struct { |
| TX_TYPE_PRUNE_MODE prune_2d_txfm_mode; |
| int fast_intra_tx_type_search; |
| |
| // INT_MAX: Disable fast search. |
| // 1 - 1024: Probability threshold used for conditionally forcing tx type, |
| // during mode search. |
| // 0: Force tx type to be DCT_DCT unconditionally, during |
| // mode search. |
| int fast_inter_tx_type_prob_thresh; |
| |
| // Prune less likely chosen transforms for each intra mode. The speed |
| // feature ranges from 0 to 2, for different speed / compression trade offs. |
| int use_reduced_intra_txset; |
| |
| // Use a skip flag prediction model to detect blocks with skip = 1 early |
| // and avoid doing full TX type search for such blocks. |
| int use_skip_flag_prediction; |
| |
| // Threshold used by the ML based method to predict TX block split decisions. |
| int ml_tx_split_thresh; |
| |
| // skip remaining transform type search when we found the rdcost of skip is |
| // better than applying transform |
| int skip_tx_search; |
| |
| // Prune tx type search using previous frame stats. |
| int prune_tx_type_using_stats; |
| // Prune tx type search using estimated RDcost |
| int prune_tx_type_est_rd; |
| |
| // Flag used to control the winner mode processing for tx type pruning for |
| // inter blocks. It enables further tx type mode pruning based on ML model for |
| // mode evaluation and disables tx type mode pruning for winner mode |
| // processing. |
| int winner_mode_tx_type_pruning; |
| } TX_TYPE_SEARCH; |
| |
| enum { |
| // Search partitions using RD criterion |
| SEARCH_PARTITION, |
| |
| // Always use a fixed size partition |
| FIXED_PARTITION, |
| |
| // Partition using source variance |
| VAR_BASED_PARTITION, |
| |
| #if CONFIG_RT_ML_PARTITIONING |
| // Partition using ML model |
| ML_BASED_PARTITION |
| #endif |
| } UENUM1BYTE(PARTITION_SEARCH_TYPE); |
| |
| enum { |
| NOT_IN_USE, |
| DIRECT_PRED, |
| RELAXED_PRED, |
| ADAPT_PRED |
| } UENUM1BYTE(MAX_PART_PRED_MODE); |
| |
| enum { |
| LAST_MV_DATA, |
| CURRENT_Q, |
| QTR_ONLY, |
| } UENUM1BYTE(MV_PREC_LOGIC); |
| |
| enum { |
| SUPERRES_AUTO_ALL, // Tries all possible superres ratios |
| SUPERRES_AUTO_DUAL, // Tries no superres and q-based superres ratios |
| SUPERRES_AUTO_SOLO, // Only apply the q-based superres ratio |
| } UENUM1BYTE(SUPERRES_AUTO_SEARCH_TYPE); |
| /*!\endcond */ |
| |
| /*!\enum INTERNAL_COST_UPDATE_TYPE |
| * \brief This enum decides internally how often to update the entropy costs |
| * |
| * INTERNAL_COST_UPD_TYPE is similar to \ref COST_UPDATE_TYPE but has slightly |
| * more flexibility in update frequency. This enum is separate from \ref |
| * COST_UPDATE_TYPE because although \ref COST_UPDATE_TYPE is not exposed, its |
| * values are public so it cannot be modified without breaking public API. |
| * Due to the use of AOMMIN() in populate_unified_cost_update_freq() to |
| * compute the unified cost update frequencies (out of COST_UPDATE_TYPE and |
| * INTERNAL_COST_UPDATE_TYPE), the values of this enum type must be listed in |
| * the order of increasing frequencies. |
| * |
| * \warning In case of any updates/modifications to the enum COST_UPDATE_TYPE, |
| * update the enum INTERNAL_COST_UPDATE_TYPE as well. |
| */ |
| typedef enum { |
| INTERNAL_COST_UPD_OFF, /*!< Turn off cost updates. */ |
| INTERNAL_COST_UPD_TILE, /*!< Update every tile. */ |
| INTERNAL_COST_UPD_SBROW_SET, /*!< Update every row_set of height 256 pixs. */ |
| INTERNAL_COST_UPD_SBROW, /*!< Update every sb rows inside a tile. */ |
| INTERNAL_COST_UPD_SB, /*!< Update every sb. */ |
| } INTERNAL_COST_UPDATE_TYPE; |
| |
| /*!\enum SIMPLE_MOTION_SEARCH_PRUNE_LEVEL |
| * \brief This enumeration defines a variety of simple motion search based |
| * partition prune levels |
| */ |
| typedef enum { |
| NO_PRUNING = -1, |
| SIMPLE_AGG_LVL0, /*!< Simple prune aggressiveness level 0. */ |
| SIMPLE_AGG_LVL1, /*!< Simple prune aggressiveness level 1. */ |
| SIMPLE_AGG_LVL2, /*!< Simple prune aggressiveness level 2. */ |
| SIMPLE_AGG_LVL3, /*!< Simple prune aggressiveness level 3. */ |
| QIDX_BASED_AGG_LVL1, /*!< Qindex based prune aggressiveness level, aggressive |
| level maps to simple agg level 1 or 2 based on qindex. |
| */ |
| TOTAL_SIMPLE_AGG_LVLS = QIDX_BASED_AGG_LVL1, /*!< Total number of simple prune |
| aggressiveness levels. */ |
| TOTAL_QINDEX_BASED_AGG_LVLS = |
| QIDX_BASED_AGG_LVL1 - |
| SIMPLE_AGG_LVL3, /*!< Total number of qindex based simple prune |
| aggressiveness levels. */ |
| TOTAL_AGG_LVLS = TOTAL_SIMPLE_AGG_LVLS + |
| TOTAL_QINDEX_BASED_AGG_LVLS, /*!< Total number of levels. */ |
| } SIMPLE_MOTION_SEARCH_PRUNE_LEVEL; |
| |
| /*!\enum PRUNE_MESH_SEARCH_LEVEL |
| * \brief This enumeration defines a variety of mesh search prune levels. |
| */ |
| typedef enum { |
| PRUNE_MESH_SEARCH_DISABLED = 0, /*!< Prune mesh search level 0. */ |
| PRUNE_MESH_SEARCH_LVL_1 = 1, /*!< Prune mesh search level 1. */ |
| PRUNE_MESH_SEARCH_LVL_2 = 2, /*!< Prune mesh search level 2. */ |
| } PRUNE_MESH_SEARCH_LEVEL; |
| |
| /*!\enum INTER_SEARCH_EARLY_TERM_IDX |
| * \brief This enumeration defines inter search early termination index in |
| * non-rd path based on sse value. |
| */ |
| typedef enum { |
| EARLY_TERM_DISABLED = |
| 0, /*!< Early terminate inter mode search based on sse disabled. */ |
| EARLY_TERM_IDX_1 = |
| 1, /*!< Early terminate inter mode search based on sse, index 1. */ |
| EARLY_TERM_IDX_2 = |
| 2, /*!< Early terminate inter mode search based on sse, index 2. */ |
| EARLY_TERM_IDX_3 = |
| 3, /*!< Early terminate inter mode search based on sse, index 3. */ |
| EARLY_TERM_IDX_4 = |
| 4, /*!< Early terminate inter mode search based on sse, index 4. */ |
| EARLY_TERM_INDICES, /*!< Total number of early terminate indices */ |
| } INTER_SEARCH_EARLY_TERM_IDX; |
| |
| /*! |
| * \brief Sequence/frame level speed vs quality features |
| */ |
| typedef struct HIGH_LEVEL_SPEED_FEATURES { |
| /*! Frame level coding parameter update. */ |
| int frame_parameter_update; |
| |
| /*! |
| * Cases and frame types for which the recode loop is enabled. |
| */ |
| RECODE_LOOP_TYPE recode_loop; |
| |
| /*! |
| * Controls the tolerance vs target rate used in deciding whether to |
| * recode a frame. It has no meaning if recode is disabled. |
| */ |
| int recode_tolerance; |
| |
| /*! |
| * Determine how motion vector precision is chosen. The possibilities are: |
| * LAST_MV_DATA: use the mv data from the last coded frame |
| * CURRENT_Q: use the current q as a threshold |
| * QTR_ONLY: use quarter pel precision only. |
| */ |
| MV_PREC_LOGIC high_precision_mv_usage; |
| |
| /*! |
| * Always set to 0. If on it enables 0 cost background transmission |
| * (except for the initial transmission of the segmentation). The feature is |
| * disabled because the addition of very large block sizes make the |
| * backgrounds very to cheap to encode, and the segmentation we have |
| * adds overhead. |
| */ |
| int static_segmentation; |
| |
| /*! |
| * Superres-auto mode search type: |
| */ |
| SUPERRES_AUTO_SEARCH_TYPE superres_auto_search_type; |
| |
| /*! |
| * Enable/disable extra screen content test by encoding key frame twice. |
| */ |
| int disable_extra_sc_testing; |
| |
| /*! |
| * Enable/disable second_alt_ref temporal filtering. |
| */ |
| int second_alt_ref_filtering; |
| |
| /*! |
| * The number of frames to be used during temporal filtering of an ARF frame |
| * is adjusted based on noise level of the current frame. |
| */ |
| int adjust_num_frames_for_arf_filtering; |
| |
| /*! |
| * Decide the bit estimation approach used in qindex decision. |
| * 0: estimate bits based on a constant value; |
| * 1: estimate bits more accurately based on the frame complexity. |
| */ |
| int accurate_bit_estimate; |
| |
| /*! |
| * Decide the approach for weight calculation during temporal filtering. |
| * 0: Calculate weight using exp() |
| * 1: Calculate weight using a lookup table that approximates exp(). |
| */ |
| int weight_calc_level_in_tf; |
| } HIGH_LEVEL_SPEED_FEATURES; |
| |
| /*! |
| * Speed features for the first pass. |
| */ |
| typedef struct FIRST_PASS_SPEED_FEATURES { |
| /*! |
| * \brief Reduces the mv search window. |
| * By default, the initial search window is around |
| * MIN(MIN(dims), MAX_FULL_PEL_VAL) = MIN(MIN(dims), 1023). |
| * Each step reduction decrease the window size by about a factor of 2. |
| */ |
| int reduce_mv_step_param; |
| |
| /*! |
| * \brief Skips the motion search when the zero mv has small sse. |
| */ |
| int skip_motion_search_threshold; |
| |
| /*! |
| * \brief Skips reconstruction by using source buffers for prediction |
| */ |
| int disable_recon; |
| |
| /*! |
| * \brief Skips the motion search centered on 0,0 mv. |
| */ |
| int skip_zeromv_motion_search; |
| } FIRST_PASS_SPEED_FEATURES; |
| |
| /*!\cond */ |
| typedef struct TPL_SPEED_FEATURES { |
| // GOP length adaptive decision. |
| // If set to 0, tpl model decides whether a shorter gf interval is better. |
| // If set to 1, tpl stats of ARFs from base layer, (base+1) layer and |
| // (base+2) layer decide whether a shorter gf interval is better. |
| // If set to 2, tpl stats of ARFs from base layer, (base+1) layer and GF boost |
| // decide whether a shorter gf interval is better. |
| // If set to 3, gop length adaptive decision is disabled. |
| int gop_length_decision_method; |
| // Prune the intra modes search by tpl. |
| // If set to 0, we will search all intra modes from DC_PRED to PAETH_PRED. |
| // If set to 1, we only search DC_PRED, V_PRED, and H_PRED. |
| int prune_intra_modes; |
| // This parameter controls which step in the n-step process we start at. |
| int reduce_first_step_size; |
| // Skip motion estimation based on the precision of center MVs and the |
| // difference between center MVs. |
| // If set to 0, motion estimation is skipped for duplicate center MVs |
| // (default). If set to 1, motion estimation is skipped for duplicate |
| // full-pixel center MVs. If set to 2, motion estimation is skipped if the |
| // difference between center MVs is less than the threshold. |
| int skip_alike_starting_mv; |
| |
| // When to stop subpel search. |
| SUBPEL_FORCE_STOP subpel_force_stop; |
| |
| // Which search method to use. |
| SEARCH_METHODS search_method; |
| |
| // Prune starting mvs in TPL based on sad scores. |
| int prune_starting_mv; |
| |
| // Prune reference frames in TPL. |
| int prune_ref_frames_in_tpl; |
| |
| // Support compound predictions. |
| int allow_compound_pred; |
| |
| // Calculate rate and distortion based on Y plane only. |
| int use_y_only_rate_distortion; |
| } TPL_SPEED_FEATURES; |
| |
| typedef struct GLOBAL_MOTION_SPEED_FEATURES { |
| GM_SEARCH_TYPE gm_search_type; |
| |
| // During global motion estimation, prune remaining reference frames in a |
| // given direction(past/future), if the evaluated ref_frame in that direction |
| // yields gm_type as INVALID/TRANSLATION/IDENTITY |
| int prune_ref_frame_for_gm_search; |
| |
| // When the current GM type is set to ZEROMV, prune ZEROMV if its performance |
| // is worse than NEWMV under SSE metric. |
| // 0 : no pruning |
| // 1 : conservative pruning |
| // 2 : aggressive pruning |
| int prune_zero_mv_with_sse; |
| |
| // Disable global motion estimation based on stats of previous frames in the |
| // GF group |
| int disable_gm_search_based_on_stats; |
| |
| // Number of refinement steps to apply after initial model generation |
| int num_refinement_steps; |
| } GLOBAL_MOTION_SPEED_FEATURES; |
| |
| typedef struct PARTITION_SPEED_FEATURES { |
| PARTITION_SEARCH_TYPE partition_search_type; |
| |
| // Used if partition_search_type = FIXED_PARTITION |
| BLOCK_SIZE fixed_partition_size; |
| |
| // Prune extended partition types search |
| // Can take values 0 - 2, 0 referring to no pruning, and 1 - 2 increasing |
| // aggressiveness of pruning in order. |
| int prune_ext_partition_types_search_level; |
| |
| // Prune part4 based on block size |
| int prune_part4_search; |
| |
| // Use a ML model to prune rectangular, ab and 4-way horz |
| // and vert partitions |
| int ml_prune_partition; |
| |
| // Use a ML model to adaptively terminate partition search after trying |
| // PARTITION_SPLIT. Can take values 0 - 2, 0 meaning not being enabled, and |
| // 1 - 2 increasing aggressiveness in order. |
| int ml_early_term_after_part_split_level; |
| |
| // Skip rectangular partition test when partition type none gives better |
| // rd than partition type split. Can take values 0 - 2, 0 referring to no |
| // skipping, and 1 - 2 increasing aggressiveness of skipping in order. |
| int less_rectangular_check_level; |
| |
| // Use square partition only beyond this block size. |
| BLOCK_SIZE use_square_partition_only_threshold; |
| |
| // Sets max square partition levels for this superblock based on |
| // motion vector and prediction error distribution produced from 16x16 |
| // simple motion search |
| MAX_PART_PRED_MODE auto_max_partition_based_on_simple_motion; |
| |
| // Min and max square partition size we enable (block_size) as per auto |
| // min max, but also used by adjust partitioning, and pick_partitioning. |
| BLOCK_SIZE default_min_partition_size; |
| BLOCK_SIZE default_max_partition_size; |
| |
| // Sets level of adjustment of variance-based partitioning during |
| // rd_use_partition 0 - no partition adjustment, 1 - try to merge partitions |
| // for small blocks and high QP, 2 - try to merge partitions, 3 - try to merge |
| // and split leaf partitions and 0 - 3 decreasing aggressiveness in order. |
| int adjust_var_based_rd_partitioning; |
| |
| // Partition search early breakout thresholds. |
| int64_t partition_search_breakout_dist_thr; |
| int partition_search_breakout_rate_thr; |
| |
| // Thresholds for ML based partition search breakout. |
| int ml_partition_search_breakout_thresh[PARTITION_BLOCK_SIZES]; |
| |
| // Aggressiveness levels for pruning split and rectangular partitions based on |
| // simple_motion_search. SIMPLE_AGG_LVL0 to SIMPLE_AGG_LVL3 correspond to |
| // simple motion search based pruning. QIDX_BASED_AGG_LVL1 corresponds to |
| // qindex based and simple motion search based pruning. |
| int simple_motion_search_prune_agg; |
| |
| // Perform simple_motion_search on each possible subblock and use it to prune |
| // PARTITION_HORZ and PARTITION_VERT. |
| int simple_motion_search_prune_rect; |
| |
| // Perform simple motion search before none_partition to decide if we |
| // want to remove all partitions other than PARTITION_SPLIT. If set to 0, this |
| // model is disabled. If set to 1, the model attempts to perform |
| // PARTITION_SPLIT only. If set to 2, the model also attempts to prune |
| // PARTITION_SPLIT. |
| int simple_motion_search_split; |
| |
| // Use features from simple_motion_search to terminate prediction block |
| // partition after PARTITION_NONE |
| int simple_motion_search_early_term_none; |
| |
| // Controls whether to reduce the number of motion search steps. If this is 0, |
| // then simple_motion_search has the same number of steps as |
| // single_motion_search (assuming no other speed features). Otherwise, reduce |
| // the number of steps by the value contained in this variable. |
| int simple_motion_search_reduce_search_steps; |
| |
| // This variable controls the maximum block size where intra blocks can be |
| // used in inter frames. |
| // TODO(aconverse): Fold this into one of the other many mode skips |
| BLOCK_SIZE max_intra_bsize; |
| |
| // Use CNN with luma pixels on source frame on each of the 64x64 subblock to |
| // perform partition pruning in intra frames. |
| // 0: No Pruning |
| // 1: Prune split and rectangular partitions only |
| // 2: Prune none, split and rectangular partitions |
| int intra_cnn_based_part_prune_level; |
| |
| // Disable extended partition search for lower block sizes. |
| int ext_partition_eval_thresh; |
| |
| // Disable rectangular partitions for larger block sizes. |
| int rect_partition_eval_thresh; |
| |
| // prune extended partition search |
| // 0 : no pruning |
| // 1 : prune 1:4 partition search using winner info from split partitions |
| // 2 : prune 1:4 and AB partition search using split and HORZ/VERT info |
| int prune_ext_part_using_split_info; |
| |
| // Prunt rectangular, AB and 4-way partition based on q index and block size |
| // 0 : no pruning |
| // 1 : prune sub_8x8 at very low quantizers |
| // 2 : prune all block size based on qindex |
| int prune_rectangular_split_based_on_qidx; |
| |
| // Prune rectangular partitions based on 4x4 sub-block variance |
| // false : no pruning |
| // true : prune rectangular partitions based on 4x4 sub-block variance |
| // deviation |
| // |
| // For allintra encode, this speed feature reduces instruction count by 6.4% |
| // for speed=6 with coding performance change less than 0.24%. For AVIF image |
| // encode, this speed feature reduces encode time by 8.14% for speed 6 on a |
| // typical image dataset with coding performance change less than 0.16%. This |
| // speed feature is not applicable to speed >= 7. |
| bool prune_rect_part_using_4x4_var_deviation; |
| |
| // Terminate partition search for child partition, |
| // when NONE and SPLIT partition rd_costs are INT64_MAX. |
| int early_term_after_none_split; |
| |
| // Level used to adjust threshold for av1_ml_predict_breakout(). At lower |
| // levels, more conservative threshold is used, and value of 0 indicates |
| // av1_ml_predict_breakout() is disabled. Value of 3 corresponds to default |
| // case with no adjustment to lbd thresholds. |
| int ml_predict_breakout_level; |
| |
| // Prune sub_8x8 (BLOCK_4X4, BLOCK_4X8 and BLOCK_8X4) partitions. |
| // 0 : no pruning |
| // 1 : pruning based on neighbour block information |
| // 2 : prune always |
| int prune_sub_8x8_partition_level; |
| |
| // Prune rectangular split based on simple motion search split/no_split score. |
| // 0: disable pruning, 1: enable pruning |
| int simple_motion_search_rect_split; |
| |
| // The current encoder adopts a DFS search for block partitions. |
| // Therefore the mode selection and associated rdcost is ready for smaller |
| // blocks before the mode selection for some partition types. |
| // AB partition could use previous rd information and skip mode search. |
| // An example is: |
| // |
| // current block |
| // +---+---+ |
| // | | |
| // + + |
| // | | |
| // +-------+ |
| // |
| // SPLIT partition has been searched first before trying HORZ_A |
| // +---+---+ |
| // | R | R | |
| // +---+---+ |
| // | R | R | |
| // +---+---+ |
| // |
| // HORZ_A |
| // +---+---+ |
| // | | | |
| // +---+---+ |
| // | | |
| // +-------+ |
| // |
| // With this speed feature, the top two sub blocks can directly use rdcost |
| // searched in split partition, and the mode info is also copied from |
| // saved info. Similarly, the bottom rectangular block can also use |
| // the available information from previous rectangular search. |
| int reuse_prev_rd_results_for_part_ab; |
| |
| // Reuse the best prediction modes found in PARTITION_SPLIT and PARTITION_RECT |
| // when encoding PARTITION_AB. |
| int reuse_best_prediction_for_part_ab; |
| |
| // The current partition search records the best rdcost so far and uses it |
| // in mode search and transform search to early skip when some criteria is |
| // met. For example, when the current rdcost is larger than the best rdcost, |
| // or the model rdcost is larger than the best rdcost times some thresholds. |
| // By default, this feature is turned on to speed up the encoder partition |
| // search. |
| // If disabling it, at speed 0, 30 frames, we could get |
| // about -0.25% quality gain (psnr, ssim, vmaf), with about 13% slowdown. |
| int use_best_rd_for_pruning; |
| |
| // Skip evaluation of non-square partitions based on the corresponding NONE |
| // partition. |
| // 0: no pruning |
| // 1: prune extended partitions if NONE is skippable |
| // 2: on top of 1, prune rectangular partitions if NONE is inter, not a newmv |
| // mode and skippable |
| int skip_non_sq_part_based_on_none; |
| |
| // Disables 8x8 and below partitions for low quantizers. |
| int disable_8x8_part_based_on_qidx; |
| } PARTITION_SPEED_FEATURES; |
| |
| typedef struct MV_SPEED_FEATURES { |
| // Motion search method (Diamond, NSTEP, Hex, Big Diamond, Square, etc). |
| SEARCH_METHODS search_method; |
| |
| // Enable the use of faster, less accurate mv search method |
| // 0: disable, 1: if bsize >= BLOCK_32X32, 2: based on bsize, SAD and qp |
| // TODO(chiyotsai@google.com): Take the clip's resolution and mv activity into |
| // account. |
| int use_bsize_dependent_search_method; |
| |
| // If this is set to 1, we limit the motion search range to 2 times the |
| // largest motion vector found in the last frame. |
| int auto_mv_step_size; |
| |
| // Subpel_search_method can only be subpel_tree which does a subpixel |
| // logarithmic search that keeps stepping at 1/2 pixel units until |
| // you stop getting a gain, and then goes on to 1/4 and repeats |
| // the same process. Along the way it skips many diagonals. |
| SUBPEL_SEARCH_METHOD subpel_search_method; |
| |
| // Maximum number of steps in logarithmic subpel search before giving up. |
| int subpel_iters_per_step; |
| |
| // When to stop subpel search. |
| SUBPEL_FORCE_STOP subpel_force_stop; |
| |
| // When to stop subpel search in simple motion search. |
| SUBPEL_FORCE_STOP simple_motion_subpel_force_stop; |
| |
| // If true, sub-pixel search uses the exact convolve function used for final |
| // encoding and decoding; otherwise, it uses bilinear interpolation. |
| SUBPEL_SEARCH_TYPE use_accurate_subpel_search; |
| |
| // Threshold for allowing exhaustive motion search. |
| int exhaustive_searches_thresh; |
| |
| // Pattern to be used for any exhaustive mesh searches (except intraBC ME). |
| MESH_PATTERN mesh_patterns[MAX_MESH_STEP]; |
| |
| // Pattern to be used for exhaustive mesh searches of intraBC ME. |
| MESH_PATTERN intrabc_mesh_patterns[MAX_MESH_STEP]; |
| |
| // Reduce single motion search range based on MV result of prior ref_mv_idx. |
| int reduce_search_range; |
| |
| // Prune mesh search. |
| PRUNE_MESH_SEARCH_LEVEL prune_mesh_search; |
| |
| // Use the rd cost around the best FULLPEL_MV to speed up subpel search |
| int use_fullpel_costlist; |
| |
| // Set the full pixel search level of obmc |
| // 0: obmc_full_pixel_diamond |
| // 1: obmc_refining_search_sad (faster) |
| int obmc_full_pixel_search_level; |
| |
| // Accurate full pixel motion search based on TPL stats. |
| int full_pixel_search_level; |
| |
| // Whether to downsample the rows in sad calculation during motion search. |
| // This is only active when there are at least 16 rows. When this sf is |
| // active, if there is a large discrepancy in the SAD values for the final |
| // motion vector between skipping vs not skipping, motion search is redone |
| // with skip row features off. |
| // 0: Disabled (do not downsample rows) |
| // 1: Skip SAD calculation of odd rows if the SAD deviation of the even and |
| // odd rows for the starting MV is small. Redo motion search with sf off |
| // when SAD deviation is high for the final motion vector. |
| // 2: Skip SAD calculation of odd rows. SAD deviation is not tested for the |
| // start MV and tested only for the final MV. |
| int use_downsampled_sad; |
| |
| // Enable/disable extensive joint motion search. |
| int disable_extensive_joint_motion_search; |
| |
| // Enable second best mv check in joint mv search. |
| // 0: allow second MV (use rd cost as the metric) |
| // 1: use var as the metric |
| // 2: disable second MV |
| int disable_second_mv; |
| |
| // Skips full pixel search based on start mv of prior ref_mv_idx. |
| // 0: Disabled |
| // 1: Skips the full pixel search upto 4 neighbor full-pel MV positions. |
| // 2: Skips the full pixel search upto 8 neighbor full-pel MV positions. |
| int skip_fullpel_search_using_startmv; |
| |
| // Method to use for refining WARPED_CAUSAL motion vectors |
| // TODO(rachelbarker): Can this be unified with OBMC in some way? |
| WARP_SEARCH_METHOD warp_search_method; |
| |
| // Maximum number of iterations in WARPED_CAUSAL refinement search |
| int warp_search_iters; |
| } MV_SPEED_FEATURES; |
| |
| typedef struct INTER_MODE_SPEED_FEATURES { |
| // 2-pass inter mode model estimation where the preliminary pass skips |
| // transform search and uses a model to estimate rd, while the final pass |
| // computes the full transform search. Two types of models are supported: |
| // 0: not used |
| // 1: used with online dynamic rd model |
| // 2: used with static rd model |
| int inter_mode_rd_model_estimation; |
| |
| // Bypass transform search based on skip rd at following stages |
| // i. Compound type mode search |
| // ii. Motion mode search (mode evaluation and winner motion mode stage) |
| // iii. Transform search for best inter candidates |
| int txfm_rd_gate_level[TX_SEARCH_CASES]; |
| |
| // Limit the inter mode tested in the RD loop |
| int reduce_inter_modes; |
| |
| // This variable is used to cap the maximum number of times we skip testing a |
| // mode to be evaluated. A high value means we will be faster. |
| int adaptive_rd_thresh; |
| |
| // Aggressively prune inter modes when best mode is skippable. |
| int prune_inter_modes_if_skippable; |
| |
| // Drop less likely to be picked reference frames in the RD search. |
| // Has seven levels for now: 0, 1, 2, 3, 4, 5 and 6 where higher levels prune |
| // more aggressively than lower ones. (0 means no pruning). |
| int selective_ref_frame; |
| |
| // Prune reference frames for rectangular partitions. |
| // 0 implies no pruning |
| // 1 implies prune for extended partition |
| // 2 implies prune horiz, vert and extended partition |
| int prune_ref_frame_for_rect_partitions; |
| |
| // Prune inter modes w.r.t past reference frames |
| // 0 no pruning |
| // 1 prune inter modes w.r.t ALTREF2 and ALTREF reference frames |
| // 2 prune inter modes w.r.t BWDREF, ALTREF2 and ALTREF reference frames |
| int alt_ref_search_fp; |
| |
| // Prune compound reference frames |
| // 0 no pruning |
| // 1 prune compound references which do not satisfy the two conditions: |
| // a) The references are at a nearest distance from the current frame in |
| // both past and future direction. |
| // b) The references have minimum pred_mv_sad in both past and future |
| // direction. |
| // 2 prune compound references except the one with nearest distance from the |
| // current frame in both past and future direction. |
| int prune_comp_ref_frames; |
| |
| // Skip the current ref_mv in NEW_MV mode based on mv, rate cost, etc. |
| // This speed feature equaling 0 means no skipping. |
| // If the speed feature equals 1 or 2, skip the current ref_mv in NEW_MV mode |
| // if we have already encountered ref_mv in the drl such that: |
| // 1. The other drl has the same mv during the SIMPLE_TRANSLATION search |
| // process as the current mv. |
| // 2. The rate needed to encode the current mv is larger than that for the |
| // other ref_mv. |
| // The speed feature equaling 1 means using subpel mv in the comparison. |
| // The speed feature equaling 2 means using fullpel mv in the comparison. |
| // If the speed feature >= 3, skip the current ref_mv in NEW_MV mode based on |
| // known full_mv bestsme and drl cost. |
| int skip_newmv_in_drl; |
| |
| // This speed feature checks duplicate ref MVs among NEARESTMV, NEARMV, |
| // GLOBALMV and skips NEARMV or GLOBALMV (in order) if a duplicate is found |
| // TODO(any): Instead of skipping repeated ref mv, use the recalculated |
| // rd-cost based on mode rate and skip the mode evaluation |
| int skip_repeated_ref_mv; |
| |
| // Flag used to control the ref_best_rd based gating for chroma |
| int perform_best_rd_based_gating_for_chroma; |
| |
| // Reuse the inter_intra_mode search result from NEARESTMV mode to other |
| // single ref modes |
| int reuse_inter_intra_mode; |
| |
| // prune wedge and compound segment approximate rd evaluation based on |
| // compound average modeled rd |
| int prune_comp_type_by_model_rd; |
| |
| // prune wedge and compound segment approximate rd evaluation based on |
| // compound average rd/ref_best_rd |
| int prune_comp_type_by_comp_avg; |
| |
| // Skip some ref frames in compound motion search by single motion search |
| // result. Has three levels for now: 0 referring to no skipping, and 1 - 3 |
| // increasing aggressiveness of skipping in order. |
| // Note: The search order might affect the result. It assumes that the single |
| // reference modes are searched before compound modes. It is better to search |
| // same single inter mode as a group. |
| int prune_comp_search_by_single_result; |
| |
| // Instead of performing a full MV search, do a simple translation first |
| // and only perform a full MV search on the motion vectors that performed |
| // well. |
| int prune_mode_search_simple_translation; |
| |
| // Only search compound modes with at least one "good" reference frame. |
| // A reference frame is good if, after looking at its performance among |
| // the single reference modes, it is one of the two best performers. |
| int prune_compound_using_single_ref; |
| |
| // Skip extended compound mode (NEAREST_NEWMV, NEW_NEARESTMV, NEAR_NEWMV, |
| // NEW_NEARMV) using ref frames of above and left neighbor |
| // blocks. |
| // 0 : no pruning |
| // 1 : prune ext compound modes using neighbor blocks (less aggressiveness) |
| // 2 : prune ext compound modes using neighbor blocks (high aggressiveness) |
| // 3 : prune ext compound modes unconditionally (highest aggressiveness) |
| int prune_ext_comp_using_neighbors; |
| |
| // Skip NEW_NEARMV and NEAR_NEWMV extended compound modes |
| int skip_ext_comp_nearmv_mode; |
| |
| // Skip extended compound mode when ref frame corresponding to NEWMV does not |
| // have NEWMV as single mode winner. |
| // 0 : no pruning |
| // 1 : prune extended compound mode (less aggressiveness) |
| // 2 : prune extended compound mode (high aggressiveness) |
| int prune_comp_using_best_single_mode_ref; |
| |
| // Skip NEARESTMV and NEARMV using weight computed in ref mv list population |
| // |
| // Pruning is enabled only when both the top and left neighbor blocks are |
| // available and when the current block already has a valid inter prediction. |
| int prune_nearest_near_mv_using_refmv_weight; |
| |
| // Based on previous ref_mv_idx search result, prune the following search. |
| int prune_ref_mv_idx_search; |
| |
| // Disable one sided compound modes. |
| int disable_onesided_comp; |
| |
| // Prune obmc search using previous frame stats. |
| // INT_MAX : disable obmc search |
| int prune_obmc_prob_thresh; |
| |
| // Prune warped motion search using previous frame stats. |
| int prune_warped_prob_thresh; |
| |
| // Variance threshold to enable/disable Interintra wedge search |
| unsigned int disable_interintra_wedge_var_thresh; |
| |
| // Variance threshold to enable/disable Interinter wedge search |
| unsigned int disable_interinter_wedge_var_thresh; |
| |
| // De-couple wedge and mode search during interintra RDO. |
| int fast_interintra_wedge_search; |
| |
| // Whether fast wedge sign estimate is used |
| int fast_wedge_sign_estimate; |
| |
| // Enable/disable ME for interinter wedge search. |
| int disable_interinter_wedge_newmv_search; |
| |
| // Decide when and how to use joint_comp. |
| DIST_WTD_COMP_FLAG use_dist_wtd_comp_flag; |
| |
| // Clip the frequency of updating the mv cost. |
| INTERNAL_COST_UPDATE_TYPE mv_cost_upd_level; |
| |
| // Clip the frequency of updating the coeff cost. |
| INTERNAL_COST_UPDATE_TYPE coeff_cost_upd_level; |
| |
| // Clip the frequency of updating the mode cost. |
| INTERNAL_COST_UPDATE_TYPE mode_cost_upd_level; |
| |
| // Prune inter modes based on tpl stats |
| // 0 : no pruning |
| // 1 - 3 indicate increasing aggressiveness in order. |
| int prune_inter_modes_based_on_tpl; |
| |
| // Skip NEARMV and NEAR_NEARMV modes using ref frames of above and left |
| // neighbor blocks and qindex. |
| PRUNE_NEARMV_LEVEL prune_nearmv_using_neighbors; |
| |
| // Model based breakout after interpolation filter search |
| // 0: no breakout |
| // 1: use model based rd breakout |
| int model_based_post_interp_filter_breakout; |
| |
| // Reuse compound type rd decision when exact match is found |
| // 0: No reuse |
| // 1: Reuse the compound type decision |
| int reuse_compound_type_decision; |
| |
| // Enable/disable masked compound. |
| int disable_masked_comp; |
| |
| // Enable/disable MV refinement for compound modes corresponds to compound |
| // types COMPOUND_AVERAGE, COMPOUND_DISTWTD (currently, this compound type |
| // is disabled for speeds >= 2 using the sf 'use_dist_wtd_comp_flag') and |
| // COMPOUND_DIFFWTD based on the availability. Levels 0 to 3 indicate |
| // increasing order of aggressiveness to disable MV refinement. |
| // 0: MV Refinement is enabled and for NEW_NEWMV mode used two iterations of |
| // refinement in av1_joint_motion_search(). |
| // 1: MV Refinement is disabled for COMPOUND_DIFFWTD and enabled for |
| // COMPOUND_AVERAGE & COMPOUND_DISTWTD. |
| // 2: MV Refinement is enabled for COMPOUND_AVERAGE & COMPOUND_DISTWTD for |
| // NEW_NEWMV mode with one iteration of refinement in |
| // av1_joint_motion_search() and MV Refinement is disabled for other compound |
| // type modes. |
| // 3: MV Refinement is disabled. |
| int enable_fast_compound_mode_search; |
| |
| // Reuse masked compound type search results |
| int reuse_mask_search_results; |
| |
| // Enable/disable fast search for wedge masks |
| int enable_fast_wedge_mask_search; |
| |
| // Early breakout from transform search of inter modes |
| int inter_mode_txfm_breakout; |
| |
| // Limit number of inter modes for txfm search if a newmv mode gets |
| // evaluated among the top modes. |
| // 0: no pruning |
| // 1 to 3 indicate increasing order of aggressiveness |
| int limit_inter_mode_cands; |
| |
| // Cap the no. of txfm searches for a given prediction mode. |
| // 0: no cap, 1: cap beyond first 4 searches, 2: cap beyond first 3 searches. |
| int limit_txfm_eval_per_mode; |
| |
| // Prune warped motion search based on block size. |
| int extra_prune_warped; |
| |
| // Do not search compound modes for ARF. |
| // The intuition is that ARF is predicted by frames far away from it, |
| // whose temporal correlations with the ARF are likely low. |
| // It is therefore likely that compound modes do not work as well for ARF |
| // as other inter frames. |
| // Speed/quality impact: |
| // Speed 1: 12% faster, 0.1% psnr loss. |
| // Speed 2: 2% faster, 0.05% psnr loss. |
| // No change for speed 3 and up, because |disable_onesided_comp| is true. |
| int skip_arf_compound; |
| } INTER_MODE_SPEED_FEATURES; |
| |
| typedef struct INTERP_FILTER_SPEED_FEATURES { |
| // Do limited interpolation filter search for dual filters, since best choice |
| // usually includes EIGHTTAP_REGULAR. |
| int use_fast_interpolation_filter_search; |
| |
| // Disable dual filter |
| int disable_dual_filter; |
| |
| // Save results of av1_interpolation_filter_search for a block |
| // Check mv and ref_frames before search, if they are very close with previous |
| // saved results, filter search can be skipped. |
| int use_interp_filter; |
| |
| // skip sharp_filter evaluation based on regular and smooth filter rd for |
| // dual_filter=0 case |
| int skip_sharp_interp_filter_search; |
| |
| // skip interpolation filter search for a block in chessboard pattern |
| int cb_pred_filter_search; |
| |
| // adaptive interp_filter search to allow skip of certain filter types. |
| int adaptive_interp_filter_search; |
| } INTERP_FILTER_SPEED_FEATURES; |
| |
| typedef struct INTRA_MODE_SPEED_FEATURES { |
| // These bit masks allow you to enable or disable intra modes for each |
| // transform size separately. |
| int intra_y_mode_mask[TX_SIZES]; |
| int intra_uv_mode_mask[TX_SIZES]; |
| |
| // flag to allow skipping intra mode for inter frame prediction |
| int skip_intra_in_interframe; |
| |
| // Prune intra mode candidates based on source block histogram of gradient. |
| // Applies to luma plane only. |
| // Feasible values are 0..4. The feature is disabled for 0. An increasing |
| // value indicates more aggressive pruning threshold. |
| int intra_pruning_with_hog; |
| |
| // Prune intra mode candidates based on source block histogram of gradient. |
| // Applies to chroma plane only. |
| // Feasible values are 0..4. The feature is disabled for 0. An increasing |
| // value indicates more aggressive pruning threshold. |
| int chroma_intra_pruning_with_hog; |
| |
| // Enable/disable smooth intra modes. |
| int disable_smooth_intra; |
| |
| // Prune UV_SMOOTH_PRED mode for chroma based on chroma source variance. |
| // false : No pruning |
| // true : Prune UV_SMOOTH_PRED mode based on chroma source variance |
| // |
| // For allintra encode, this speed feature reduces instruction count |
| // by 1.90%, 2.21% and 1.97% for speed 6, 7 and 8 with coding performance |
| // change less than 0.04%. For AVIF image encode, this speed feature reduces |
| // encode time by 1.56%, 2.14% and 0.90% for speed 6, 7 and 8 on a typical |
| // image dataset with coding performance change less than 0.05%. |
| bool prune_smooth_intra_mode_for_chroma; |
| |
| // Prune filter intra modes in intra frames. |
| // 0 : No pruning |
| // 1 : Evaluate applicable filter intra modes based on best intra mode so far |
| // 2 : Do not evaluate filter intra modes |
| int prune_filter_intra_level; |
| |
| // prune palette search |
| // 0: No pruning |
| // 1: Perform coarse search to prune the palette colors. For winner colors, |
| // neighbors are also evaluated using a finer search. |
| // 2: Perform 2 way palette search from max colors to min colors (and min |
| // colors to remaining colors) and terminate the search if current number of |
| // palette colors is not the winner. |
| int prune_palette_search_level; |
| |
| // Terminate early in luma palette_size search. Speed feature values indicate |
| // increasing level of pruning. |
| // 0: No early termination |
| // 1: Terminate early for higher luma palette_size, if header rd cost of lower |
| // palette_size is more than 2 * best_rd. This level of pruning is more |
| // conservative when compared to sf level 2 as the cases which will get pruned |
| // with sf level 1 is a subset of the cases which will get pruned with sf |
| // level 2. |
| // 2: Terminate early for higher luma palette_size, if header rd cost of lower |
| // palette_size is more than best_rd. |
| // For allintra encode, this sf reduces instruction count by 2.49%, 1.07%, |
| // 2.76%, 2.30%, 1.84%, 2.69%, 2.04%, 2.05% and 1.44% for speed 0, 1, 2, 3, 4, |
| // 5, 6, 7 and 8 on screen content set with coding performance change less |
| // than 0.01% for speed <= 2 and less than 0.03% for speed >= 3. For AVIF |
| // image encode, this sf reduces instruction count by 1.94%, 1.13%, 1.29%, |
| // 0.93%, 0.89%, 1.03%, 1.07%, 1.20% and 0.18% for speed 0, 1, 2, 3, 4, 5, 6, |
| // 7 and 8 on a typical image dataset with coding performance change less than |
| // 0.01%. |
| int prune_luma_palette_size_search_level; |
| |
| // Prune chroma intra modes based on luma intra mode winner. |
| // 0: No pruning |
| // 1: Prune chroma intra modes other than UV_DC_PRED, UV_SMOOTH_PRED, |
| // UV_CFL_PRED and the mode that corresponds to luma intra mode winner. |
| int prune_chroma_modes_using_luma_winner; |
| |
| // Clip the frequency of updating the mv cost for intrabc. |
| INTERNAL_COST_UPDATE_TYPE dv_cost_upd_level; |
| |
| // We use DCT_DCT transform followed by computing SATD (Sum of Absolute |
| // Transformed Differences) as an estimation of RD score to quickly find the |
| // best possible Chroma from Luma (CFL) parameter. Then we do a full RD search |
| // near the best possible parameter. The search range is set here. |
| // The range of cfl_searh_range should be [1, 33], and the following are the |
| // recommended values. |
| // 1: Fastest mode. |
| // 3: Default mode that provides good speedup without losing compression |
| // performance at speed 0. |
| // 33: Exhaustive rd search (33 == CFL_MAGS_SIZE). This mode should only |
| // be used for debugging purpose. |
| int cfl_search_range; |
| |
| // TOP_INTRA_MODEL_COUNT is 4 that is the number of top model rd to store in |
| // intra mode decision. Here, add a speed feature to reduce this number for |
| // higher speeds. |
| int top_intra_model_count_allowed; |
| |
| // Adapt top_intra_model_count_allowed locally to prune luma intra modes using |
| // neighbor block and quantizer information. |
| int adapt_top_model_rd_count_using_neighbors; |
| |
| // Prune the evaluation of odd delta angles of directional luma intra modes by |
| // using the rdcosts of neighbouring delta angles. |
| // For allintra encode, this speed feature reduces instruction count |
| // by 4.461%, 3.699% and 3.536% for speed 6, 7 and 8 on a typical video |
| // dataset with coding performance change less than 0.26%. For AVIF image |
| // encode, this speed feature reduces encode time by 2.849%, 2.471%, |
| // and 2.051% for speed 6, 7 and 8 on a typical image dataset with coding |
| // performance change less than 0.27%. |
| int prune_luma_odd_delta_angles_in_intra; |
| |
| // Terminate early in chroma palette_size search. |
| // 0: No early termination |
| // 1: Terminate early for higher palette_size, if header rd cost of lower |
| // palette_size is more than best_rd. |
| // For allintra encode, this sf reduces instruction count by 0.45%, |
| // 0.62%, 1.73%, 2.50%, 2.89%, 3.09% and 3.86% for speed 0 to 6 on screen |
| // content set with coding performance change less than 0.01%. |
| // For AVIF image encode, this sf reduces instruction count by 0.45%, 0.81%, |
| // 0.85%, 1.05%, 1.45%, 1.66% and 1.95% for speed 0 to 6 on a typical image |
| // dataset with no quality drop. |
| int early_term_chroma_palette_size_search; |
| |
| // Skips the evaluation of filter intra modes in inter frames if rd evaluation |
| // of luma intra dc mode results in invalid rd stats. |
| int skip_filter_intra_in_inter_frames; |
| } INTRA_MODE_SPEED_FEATURES; |
| |
| typedef struct TX_SPEED_FEATURES { |
| // Init search depth for square and rectangular transform partitions. |
| // Values: |
| // 0 - search full tree, 1: search 1 level, 2: search the highest level only |
| int inter_tx_size_search_init_depth_sqr; |
| int inter_tx_size_search_init_depth_rect; |
| int intra_tx_size_search_init_depth_sqr; |
| int intra_tx_size_search_init_depth_rect; |
| |
| // If any dimension of a coding block size above 64, always search the |
| // largest transform only, since the largest transform block size is 64x64. |
| int tx_size_search_lgr_block; |
| |
| TX_TYPE_SEARCH tx_type_search; |
| |
| // Skip split transform block partition when the collocated bigger block |
| // is selected as all zero coefficients. |
| int txb_split_cap; |
| |
| // Shortcut the transform block partition and type search when the target |
| // rdcost is relatively lower. |
| // Values are 0 (not used) , or 1 - 2 with progressively increasing |
| // aggressiveness |
| int adaptive_txb_search_level; |
| |
| // Prune level for tx_size_type search for inter based on rd model |
| // 0: no pruning |
| // 1-2: progressively increasing aggressiveness of pruning |
| int model_based_prune_tx_search_level; |
| |
| // Refine TX type after fast TX search. |
| int refine_fast_tx_search_results; |
| |
| // Prune transform split/no_split eval based on residual properties. A value |
| // of 0 indicates no pruning, and the aggressiveness of pruning progressively |
| // increases from levels 1 to 3. |
| int prune_tx_size_level; |
| |
| // Prune the evaluation of transform depths as decided by the NN model. |
| // false: No pruning. |
| // true : Avoid the evaluation of specific transform depths using NN model. |
| // |
| // For allintra encode, this speed feature reduces instruction count |
| // by 4.76%, 8.92% and 11.28% for speed 6, 7 and 8 with coding performance |
| // change less than 0.32%. For AVIF image encode, this speed feature reduces |
| // encode time by 4.65%, 9.16% and 10.45% for speed 6, 7 and 8 on a typical |
| // image dataset with coding performance change less than 0.19%. |
| bool prune_intra_tx_depths_using_nn; |
| |
| // Enable/disable early breakout during transform search of intra modes, by |
| // using the minimum rd cost possible. By using this approach, the rd |
| // evaluation of applicable transform blocks (in the current block) can be |
| // avoided as |
| // 1) best_rd evolves during the search in choose_tx_size_type_from_rd() |
| // 2) appropriate ref_best_rd is passed in intra_block_yrd() |
| // |
| // For allintra encode, this speed feature reduces instruction count |
| // by 1.11%, 1.08%, 1.02% and 0.93% for speed 3, 6, 7 and 8 with coding |
| // performance change less than 0.02%. For AVIF image encode, this speed |
| // feature reduces encode time by 0.93%, 1.46%, 1.07%, 0.84%, 0.99% and 0.73% |
| // for speed 3, 4, 5, 6, 7 and 8 on a typical image dataset with coding |
| // performance change less than 0.004%. |
| bool use_rd_based_breakout_for_intra_tx_search; |
| } TX_SPEED_FEATURES; |
| |
| typedef struct RD_CALC_SPEED_FEATURES { |
| // Fast approximation of av1_model_rd_from_var_lapndz |
| int simple_model_rd_from_var; |
| |
| // Perform faster distortion computation during the R-D evaluation by trying |
| // to approximate the prediction error with transform coefficients (faster but |
| // less accurate) rather than computing distortion in the pixel domain (slower |
| // but more accurate). The following methods are used for distortion |
| // computation: |
| // Method 0: Always compute distortion in the pixel domain |
| // Method 1: Based on block error, try using transform domain distortion for |
| // tx_type search and compute distortion in pixel domain for final RD_STATS |
| // Method 2: Based on block error, try to compute distortion in transform |
| // domain |
| // Methods 1 and 2 may fallback to computing distortion in the pixel domain in |
| // case the block error is less than the threshold, which is controlled by the |
| // speed feature tx_domain_dist_thres_level. |
| // |
| // The speed feature tx_domain_dist_level decides which of the above methods |
| // needs to be used across different mode evaluation stages as described |
| // below: |
| // Eval type: Default Mode Winner |
| // Level 0 : Method 0 Method 2 Method 0 |
| // Level 1 : Method 1 Method 2 Method 0 |
| // Level 2 : Method 2 Method 2 Method 0 |
| // Level 3 : Method 2 Method 2 Method 2 |
| int tx_domain_dist_level; |
| |
| // Transform domain distortion threshold level |
| int tx_domain_dist_thres_level; |
| |
| // Trellis (dynamic programming) optimization of quantized values |
| TRELLIS_OPT_TYPE optimize_coefficients; |
| |
| // Use hash table to store macroblock RD search results |
| // to avoid repeated search on the same residue signal. |
| int use_mb_rd_hash; |
| |
| // Flag used to control the extent of coeff R-D optimization |
| int perform_coeff_opt; |
| } RD_CALC_SPEED_FEATURES; |
| |
| typedef struct WINNER_MODE_SPEED_FEATURES { |
| // Flag used to control the winner mode processing for better R-D optimization |
| // of quantized coeffs |
| int enable_winner_mode_for_coeff_opt; |
| |
| // Flag used to control the winner mode processing for transform size |
| // search method |
| int enable_winner_mode_for_tx_size_srch; |
| |
| // Control transform size search level |
| // Eval type: Default Mode Winner |
| // Level 0 : FULL RD LARGEST ALL FULL RD |
| // Level 1 : FAST RD LARGEST ALL FULL RD |
| // Level 2 : LARGEST ALL LARGEST ALL FULL RD |
| // Level 3 : LARGEST ALL LARGEST ALL LARGEST ALL |
| int tx_size_search_level; |
| |
| // Flag used to control the winner mode processing for use transform |
| // domain distortion |
| int enable_winner_mode_for_use_tx_domain_dist; |
| |
| // Flag used to enable processing of multiple winner modes |
| MULTI_WINNER_MODE_TYPE multi_winner_mode_type; |
| |
| // Motion mode for winner candidates: |
| // 0: speed feature OFF |
| // 1 / 2 : Use configured number of winner candidates |
| int motion_mode_for_winner_cand; |
| |
| // Controls the prediction of transform skip block or DC only block. |
| // |
| // Different speed feature values (0 to 3) decide the aggressiveness of |
| // prediction (refer to predict_dc_levels[][] in speed_features.c) to be used |
| // during different mode evaluation stages. |
| int dc_blk_pred_level; |
| |
| // If on, disables interpolation filter search in handle_inter_mode loop, and |
| // performs it during winner mode processing by \ref |
| // tx_search_best_inter_candidates. |
| int winner_mode_ifs; |
| |
| // Controls the disabling of winner mode processing. Speed feature levels |
| // are ordered in increasing aggressiveness of pruning. The method considered |
| // for disabling, depends on the sf level value and it is described as below. |
| // 0: Do not disable |
| // 1: Disable for blocks with low source variance. |
| // 2: Disable for blocks which turn out to be transform skip (skipped based on |
| // eob) during MODE_EVAL stage except NEWMV mode. |
| // 3: Disable for blocks which turn out to be transform skip during MODE_EVAL |
| // stage except NEWMV mode. For high quantizers, prune conservatively based on |
| // transform skip (skipped based on eob) except for NEWMV mode. |
| // 4: Disable for blocks which turn out to be transform skip during MODE_EVAL |
| // stage. |
| int prune_winner_mode_eval_level; |
| } WINNER_MODE_SPEED_FEATURES; |
| |
| typedef struct LOOP_FILTER_SPEED_FEATURES { |
| // This feature controls how the loop filter level is determined. |
| LPF_PICK_METHOD lpf_pick; |
| |
| // Skip some final iterations in the determination of the best loop filter |
| // level. |
| int use_coarse_filter_level_search; |
| |
| // Control how the CDEF strength is determined. |
| CDEF_PICK_METHOD cdef_pick_method; |
| |
| // Decoder side speed feature to add penalty for use of dual-sgr filters. |
| // Takes values 0 - 10, 0 indicating no penalty and each additional level |
| // adding a penalty of 1% |
| int dual_sgr_penalty_level; |
| |
| // prune sgr ep using binary search like mechanism |
| int enable_sgr_ep_pruning; |
| |
| // Disable loop restoration for Chroma plane |
| int disable_loop_restoration_chroma; |
| |
| // Disable loop restoration for luma plane |
| int disable_loop_restoration_luma; |
| |
| // Prune RESTORE_WIENER evaluation based on source variance |
| // 0 : no pruning |
| // 1 : conservative pruning |
| // 2 : aggressive pruning |
| int prune_wiener_based_on_src_var; |
| |
| // Prune self-guided loop restoration based on wiener search results |
| // 0 : no pruning |
| // 1 : pruning based on rdcost ratio of RESTORE_WIENER and RESTORE_NONE |
| // 2 : pruning based on winner restoration type among RESTORE_WIENER and |
| // RESTORE_NONE |
| int prune_sgr_based_on_wiener; |
| |
| // Reduce the wiener filter win size for luma |
| int reduce_wiener_window_size; |
| |
| // Flag to disable Wiener Loop restoration filter. |
| bool disable_wiener_filter; |
| |
| // Flag to disable Self-guided Loop restoration filter. |
| bool disable_sgr_filter; |
| |
| // Disable the refinement search around the wiener filter coefficients. |
| bool disable_wiener_coeff_refine_search; |
| |
| // Whether to downsample the rows in computation of wiener stats. |
| int use_downsampled_wiener_stats; |
| } LOOP_FILTER_SPEED_FEATURES; |
| |
| typedef struct REAL_TIME_SPEED_FEATURES { |
| // check intra prediction for non-RD mode. |
| int check_intra_pred_nonrd; |
| |
| // Skip checking intra prediction. |
| // 0 - don't skip |
| // 1 - skip if TX is skipped and best mode is not NEWMV |
| // 2 - skip if TX is skipped |
| // Skipping aggressiveness increases from level 1 to 2. |
| int skip_intra_pred; |
| |
| // Estimate motion before calculating variance in variance-based partition |
| // 0 - Only use zero MV |
| // 1 - perform coarse ME |
| // 2 - perform coarse ME, and also use neighbours' MVs |
| // 3 - use neighbours' MVs without performing coarse ME |
| int estimate_motion_for_var_based_partition; |
| |
| // For nonrd_use_partition: mode of extra check of leaf partition |
| // 0 - don't check merge |
| // 1 - always check merge |
| // 2 - check merge and prune checking final split |
| // 3 - check merge and prune checking final split based on bsize and qindex |
| int nonrd_check_partition_merge_mode; |
| |
| // For nonrd_use_partition: check of leaf partition extra split |
| int nonrd_check_partition_split; |
| |
| // Implements various heuristics to skip searching modes |
| // The heuristics selected are based on flags |
| // defined in the MODE_SEARCH_SKIP_HEURISTICS enum |
| unsigned int mode_search_skip_flags; |
| |
| // For nonrd: Reduces ref frame search. |
| // 0 - low level of search prune in non last frames |
| // 1 - pruned search in non last frames |
| // 2 - more pruned search in non last frames |
| int nonrd_prune_ref_frame_search; |
| |
| // This flag controls the use of non-RD mode decision. |
| int use_nonrd_pick_mode; |
| |
| // Use ALTREF frame in non-RD mode decision. |
| int use_nonrd_altref_frame; |
| |
| // Use compound reference for non-RD mode. |
| int use_comp_ref_nonrd; |
| |
| // Reference frames for compound prediction for nonrd pickmode: |
| // LAST_GOLDEN (0), LAST_LAST2 (1), or LAST_ALTREF (2). |
| int ref_frame_comp_nonrd[3]; |
| |
| // use reduced ref set for real-time mode |
| int use_real_time_ref_set; |
| |
| // Skip a number of expensive mode evaluations for blocks with very low |
| // temporal variance. |
| int short_circuit_low_temp_var; |
| |
| // Reuse inter prediction in fast non-rd mode. |
| int reuse_inter_pred_nonrd; |
| |
| // Number of best inter modes to search transform. INT_MAX - search all. |
| int num_inter_modes_for_tx_search; |
| |
| // Use interpolation filter search in non-RD mode decision. |
| int use_nonrd_filter_search; |
| |
| // Use simplified RD model for interpolation search and Intra |
| int use_simple_rd_model; |
| |
| // If set forces interpolation filter to EIGHTTAP_REGULAR |
| int skip_interp_filter_search; |
| |
| // For nonrd mode: use hybrid intra mode search for intra only frames based on |
| // block properties. |
| // 0 : use nonrd pick intra for all blocks |
| // 1 : use rd for bsize < 16x16, nonrd otherwise |
| // 2 : use rd for bsize < 16x16 and src var >= 101, nonrd otherwise |
| int hybrid_intra_pickmode; |
| |
| // Compute variance/sse on source difference, prior to encoding superblock. |
| int source_metrics_sb_nonrd; |
| |
| // Flag to indicate process for handling overshoot on slide/scene change, |
| // for real-time CBR mode. |
| OVERSHOOT_DETECTION_CBR overshoot_detection_cbr; |
| |
| // Check for scene/content change detection on every frame before encoding. |
| int check_scene_detection; |
| |
| // For nonrd mode: Prefer larger partition blks in variance based partitioning |
| // 0: disabled, 1-3: increasing aggressiveness |
| int prefer_large_partition_blocks; |
| |
| // uses results of temporal noise estimate |
| int use_temporal_noise_estimate; |
| |
| // Parameter indicating initial search window to be used in full-pixel search |
| // for nonrd_pickmode. Range [0, MAX_MVSEARCH_STEPS - 1]. Lower value |
| // indicates larger window. If set to 0, step_param is set based on internal |
| // logic in set_mv_search_params(). |
| int fullpel_search_step_param; |
| |
| // Bit mask to enable or disable intra modes for each prediction block size |
| // separately, for nonrd_pickmode. Currently, the sf is not respected when |
| // 'force_intra_check' is true in 'av1_estimate_intra_mode()' function. Also, |
| // H and V pred modes allowed through this sf can be further pruned when |
| //'prune_hv_pred_modes_using_src_sad' sf is true. |
| int intra_y_mode_bsize_mask_nrd[BLOCK_SIZES]; |
| |
| // Prune H and V intra predition modes evalution in inter frame. |
| // The sf does not have any impact. |
| // i. when frame_source_sad is 1.1 times greater than avg_source_sad |
| // ii. when cyclic_refresh_segment_id_boosted is enabled |
| // iii. when SB level source sad is greater than kMedSad |
| // iv. when color sensitivity is non zero for both the chroma channels |
| bool prune_hv_pred_modes_using_src_sad; |
| |
| // Skips mode checks more aggressively in nonRD mode |
| int nonrd_aggressive_skip; |
| |
| // Skip cdef on 64x64 blocks/ |
| // 0: disabled |
| // 1: skip when NEWMV or INTRA is not picked or color sensitivity is off. |
| // When color sensitivity is on for a superblock, all 64x64 blocks within |
| // will not skip. |
| // 2: more aggressive mode where skip is done for all frames where |
| // rc->high_source_sad = 0 (non slide-changes), and color sensitivity off. |
| int skip_cdef_sb; |
| |
| // Forces larger partition blocks in variance based partitioning for intra |
| // frames |
| int force_large_partition_blocks_intra; |
| |
| // Skip evaluation of no split in tx size selection for merge partition |
| int skip_tx_no_split_var_based_partition; |
| |
| // Intermediate termination of newMV mode evaluation based on so far best mode |
| // sse |
| int skip_newmv_mode_based_on_sse; |
| |
| // Define gf length multiplier. |
| // Level 0: use large multiplier, level 1: use medium multiplier. |
| int gf_length_lvl; |
| |
| // Prune inter modes with golden frame as reference for NEARMV and NEWMV modes |
| int prune_inter_modes_with_golden_ref; |
| |
| // Prune inter modes w.r.t golden or alt-ref frame based on sad |
| int prune_inter_modes_wrt_gf_arf_based_on_sad; |
| |
| // Prune inter mode search in rd path based on current block's temporal |
| // variance wrt LAST reference. |
| int prune_inter_modes_using_temp_var; |
| |
| // Reduce MV precision to halfpel for higher int MV value & frame-level motion |
| // 0: disabled |
| // 1-2: Reduce precision to halfpel, fullpel based on conservative |
| // thresholds, aggressiveness increases with increase in level |
| // 3: Reduce precision to halfpel using more aggressive thresholds |
| int reduce_mv_pel_precision_highmotion; |
| |
| // Reduce MV precision for low complexity blocks |
| // 0: disabled |
| // 1: Reduce the mv resolution for zero mv if the variance is low |
| // 2: Switch to halfpel, fullpel based on low block spatial-temporal |
| // complexity. |
| int reduce_mv_pel_precision_lowcomplex; |
| |
| // Prune intra mode evaluation in inter frames based on mv range. |
| BLOCK_SIZE prune_intra_mode_based_on_mv_range; |
| // The number of times to left shift the splitting thresholds in variance |
| // based partitioning. The minimum values should be 7 to avoid left shifting |
| // by a negative number. |
| int var_part_split_threshold_shift; |
| |
| // Qindex based variance partition threshold index, which determines |
| // the aggressiveness of partition pruning |
| // 0: disabled for speeds 9,10 |
| // 1,2: (rd-path) lowers qindex thresholds conditionally (for low SAD sb) |
| // 3,4: (non-rd path) uses pre-tuned qindex thresholds |
| int var_part_based_on_qidx; |
| |
| // Enable GF refresh based on Q value. |
| int gf_refresh_based_on_qp; |
| |
| // Temporal filtering |
| // The value can be 1 or 2, which indicates the threshold to use. |
| // Must be off for lossless mode. |
| int use_rtc_tf; |
| |
| // Prune the use of the identity transform in nonrd_pickmode, |
| // used for screen content mode: only for smaller blocks |
| // and higher spatial variance, and when skip_txfm is not |
| // already set. |
| int prune_idtx_nonrd; |
| |
| // Prune the use of paletter mode in nonrd pickmode. |
| int prune_palette_nonrd; |
| |
| // Skip loopfilter, for static content after slide change |
| // or key frame, once quality has ramped up. |
| // 0: disabled |
| // 1: skip only after quality is ramped up. |
| // 2: aggrssive mode, where skip is done for all frames that |
| // where rc->high_source_sad = 0 (no slide-changes). |
| int skip_lf_screen; |
| |
| // For nonrd: early exit out of variance partition that sets the |
| // block size to superblock size, and sets mode to zeromv-last skip. |
| // 0: disabled |
| // 1: zeromv-skip is enabled at SB level only |
| // 2: zeromv-skip is enabled at SB level and coding block level |
| int part_early_exit_zeromv; |
| |
| // Early terminate inter mode search based on sse in non-rd path. |
| INTER_SEARCH_EARLY_TERM_IDX sse_early_term_inter_search; |
| |
| // SAD based adaptive altref selection |
| int sad_based_adp_altref_lag; |
| |
| // Enable/disable partition direct merging. |
| int partition_direct_merging; |
| |
| // Level of aggressiveness for obtaining tx size based on qstep |
| int tx_size_level_based_on_qstep; |
| |
| // Avoid the partitioning of a 16x16 block in variance based partitioning |
| // (VBP) by making use of minimum and maximum sub-block variances. |
| // For allintra encode, this speed feature reduces instruction count by 5.39% |
| // for speed 9 on a typical video dataset with coding performance gain |
| // of 1.44%. |
| // For AVIF image encode, this speed feature reduces encode time |
| // by 8.44% for speed 9 on a typical image dataset with coding performance |
| // gain of 0.78%. |
| bool vbp_prune_16x16_split_using_min_max_sub_blk_var; |
| |
| // A qindex threshold that determines whether to use qindex based CDEF filter |
| // strength estimation for screen content types. The strength estimation model |
| // used for screen contents prefers to allow cdef filtering for more frames. |
| // This sf is used to limit the frames which go through cdef filtering and |
| // following explains the setting of the same. |
| // MAXQ (255): This disables the usage of this sf. Here, frame does not use a |
| // screen content model thus reduces the number of frames that go through cdef |
| // filtering. |
| // MINQ (0): Frames always use screen content model thus increasing the number |
| // of frames that go through cdef filtering. |
| // This speed feature has a substantial gain on coding metrics, with moderate |
| // increase encoding time. Select threshold based on speed vs quality |
| // trade-off. |
| int screen_content_cdef_filter_qindex_thresh; |
| |
| // Prune compound mode if its variance is higher than the variance of single |
| // modes. |
| bool prune_compoundmode_with_singlecompound_var; |
| |
| // Allow mode cost update at frame level every couple frames. This |
| // overrides the command line setting --mode-cost-upd-freq=3 (never update |
| // except on key frame and first delta). |
| bool frame_level_mode_cost_update; |
| |
| // Prune H_PRED during intra mode evaluation in the nonrd path based on best |
| // mode so far. |
| // |
| // For allintra encode, this speed feature reduces instruction count by 1.10% |
| // for speed 9 with coding performance change less than 0.04%. |
| // For AVIF image encode, this speed feature reduces encode time by 1.03% for |
| // speed 9 on a typical image dataset with coding performance change less than |
| // 0.08%. |
| bool prune_h_pred_using_best_mode_so_far; |
| |
| // Enable pruning of intra mode evaluations in nonrd path based on source |
| // variance and best mode so far. The pruning logic is enabled only if the |
| // mode is not a winner mode of both the neighboring blocks (left/top). |
| // |
| // For allintra encode, this speed feature reduces instruction count by 3.96% |
| // for speed 9 with coding performance change less than 0.38%. |
| // For AVIF image encode, this speed feature reduces encode time by 3.46% for |
| // speed 9 on a typical image dataset with coding performance change less than |
| // -0.06%. |
| bool enable_intra_mode_pruning_using_neighbors; |
| |
| // Prune intra mode evaluations in nonrd path based on best sad so far. |
| // |
| // For allintra encode, this speed feature reduces instruction count by 3.05% |
| // for speed 9 with coding performance change less than 0.24%. |
| // For AVIF image encode, this speed feature reduces encode time by 1.87% for |
| // speed 9 on a typical image dataset with coding performance change less than |
| // 0.16%. |
| bool prune_intra_mode_using_best_sad_so_far; |
| |
| // If compound is enabled, and the current block size is \geq BLOCK_16X16, |
| // limit the compound modes to GLOBAL_GLOBALMV. This does not apply to the |
| // base layer of svc. |
| bool check_only_zero_zeromv_on_large_blocks; |
| |
| // Allow for disabling cdf update for non reference frames in svc mode. |
| bool disable_cdf_update_non_reference_frame; |
| |
| // Prune compound modes if the single modes variances do not perform well. |
| bool prune_compoundmode_with_singlemode_var; |
| |
| // Skip searching all compound mode if the variance of single_mode residue is |
| // sufficiently low. |
| bool skip_compound_based_on_var; |
| |
| // Sets force_zeromv_skip based on the source sad available. Aggressiveness |
| // increases with increase in the level set for speed feature. |
| // 0: No setting |
| // 1: If source sad is kZeroSad |
| // 2: If source sad <= kVeryLowSad |
| int set_zeromv_skip_based_on_source_sad; |
| |
| // Downgrades the block-level subpel motion search to |
| // av1_find_best_sub_pixel_tree_pruned_more for higher QP and when fullpel |
| // search performed well, zeromv has low sad or low source_var |
| bool use_adaptive_subpel_search; |
| |
| // A flag used in RTC case to control frame_refs_short_signaling. Note that |
| // the final decision is made in check_frame_refs_short_signaling(). The flag |
| // can only be turned on when res < 360p and speed >= 9, in which case only |
| // LAST and GOLDEN ref frames are used now. |
| bool enable_ref_short_signaling; |
| |
| // A flag that controls if we check or bypass GLOBALMV in rtc single ref frame |
| // case. |
| bool check_globalmv_on_single_ref; |
| } REAL_TIME_SPEED_FEATURES; |
| |
| /*!\endcond */ |
| |
| /*! |
| * \brief Top level speed vs quality trade off data struture. |
| */ |
| typedef struct SPEED_FEATURES { |
| /*! |
| * Sequence/frame level speed features: |
| */ |
| HIGH_LEVEL_SPEED_FEATURES hl_sf; |
| |
| /*! |
| * Speed features for the first pass. |
| */ |
| FIRST_PASS_SPEED_FEATURES fp_sf; |
| |
| /*! |
| * Speed features related to how tpl's searches are done. |
| */ |
| TPL_SPEED_FEATURES tpl_sf; |
| |
| /*! |
| * Global motion speed features: |
| */ |
| GLOBAL_MOTION_SPEED_FEATURES gm_sf; |
| |
| /*! |
| * Partition search speed features: |
| */ |
| PARTITION_SPEED_FEATURES part_sf; |
| |
| /*! |
| * Motion search speed features: |
| */ |
| MV_SPEED_FEATURES mv_sf; |
| |
| /*! |
| * Inter mode search speed features: |
| */ |
| INTER_MODE_SPEED_FEATURES inter_sf; |
| |
| /*! |
| * Interpolation filter search speed features: |
| */ |
| INTERP_FILTER_SPEED_FEATURES interp_sf; |
| |
| /*! |
| * Intra mode search speed features: |
| */ |
| INTRA_MODE_SPEED_FEATURES intra_sf; |
| |
| /*! |
| * Transform size/type search speed features: |
| */ |
| TX_SPEED_FEATURES tx_sf; |
| |
| /*! |
| * RD calculation speed features: |
| */ |
| RD_CALC_SPEED_FEATURES rd_sf; |
| |
| /*! |
| * Two-pass mode evaluation features: |
| */ |
| WINNER_MODE_SPEED_FEATURES winner_mode_sf; |
| |
| /*! |
| * In-loop filter speed features: |
| */ |
| LOOP_FILTER_SPEED_FEATURES lpf_sf; |
| |
| /*! |
| * Real-time mode speed features: |
| */ |
| REAL_TIME_SPEED_FEATURES rt_sf; |
| } SPEED_FEATURES; |
| /*!\cond */ |
| |
| struct AV1_COMP; |
| |
| /*!\endcond */ |
| /*!\brief Frame size independent speed vs quality trade off flags |
| * |
| *\ingroup speed_features |
| * |
| * \param[in] cpi Top - level encoder instance structure |
| * \param[in] speed Speed setting passed in from the command line |
| * |
| * \remark No return value but configures the various speed trade off flags |
| * based on the passed in speed setting. (Higher speed gives lower |
| * quality) |
| */ |
| void av1_set_speed_features_framesize_independent(struct AV1_COMP *cpi, |
| int speed); |
| |
| /*!\brief Frame size dependent speed vs quality trade off flags |
| * |
| *\ingroup speed_features |
| * |
| * \param[in] cpi Top - level encoder instance structure |
| * \param[in] speed Speed setting passed in from the command line |
| * |
| * \remark No return value but configures the various speed trade off flags |
| * based on the passed in speed setting and frame size. (Higher speed |
| * corresponds to lower quality) |
| */ |
| void av1_set_speed_features_framesize_dependent(struct AV1_COMP *cpi, |
| int speed); |
| /*!\brief Q index dependent speed vs quality trade off flags |
| * |
| *\ingroup speed_features |
| * |
| * \param[in] cpi Top - level encoder instance structure |
| * \param[in] speed Speed setting passed in from the command line |
| * |
| * \remark No return value but configures the various speed trade off flags |
| * based on the passed in speed setting and current frame's Q index. |
| * (Higher speed corresponds to lower quality) |
| */ |
| void av1_set_speed_features_qindex_dependent(struct AV1_COMP *cpi, int speed); |
| |
| #ifdef __cplusplus |
| } // extern "C" |
| #endif |
| |
| #endif // AOM_AV1_ENCODER_SPEED_FEATURES_H_ |