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Diffstat (limited to 'media/libaom/src/av1/encoder/speed_features.h')
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diff --git a/media/libaom/src/av1/encoder/speed_features.h b/media/libaom/src/av1/encoder/speed_features.h new file mode 100644 index 000000000..41013b2e7 --- /dev/null +++ b/media/libaom/src/av1/encoder/speed_features.h @@ -0,0 +1,568 @@ +/* + * 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" + +#ifdef __cplusplus +extern "C" { +#endif + +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_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) +}; + +typedef 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, +} DEV_SPEED_FEATURES; + +typedef enum { + DIAMOND = 0, + NSTEP = 1, + HEX = 2, + BIGDIA = 3, + SQUARE = 4, + FAST_HEX = 5, + FAST_DIAMOND = 6 +} SEARCH_METHODS; + +typedef enum { + // No recode. + DISALLOW_RECODE = 0, + // Allow recode for KF and exceeding maximum frame bandwidth. + ALLOW_RECODE_KFMAXBW = 1, + // Allow recode only for KF/ARF/GF frames. + ALLOW_RECODE_KFARFGF = 2, + // Allow recode for all frames based on bitrate constraints. + ALLOW_RECODE = 3, +} RECODE_LOOP_TYPE; + +typedef 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_TREE_PRUNED_EVENMORE = 3, // Prunes 1/2- and 1/4-pel searches + // Other methods to come +} SUBPEL_SEARCH_METHODS; + +typedef enum { + USE_FULL_RD = 0, + USE_FAST_RD, + USE_LARGESTALL, +} TX_SIZE_SEARCH_METHOD; + +typedef enum { + NOT_IN_USE = 0, + RELAXED_NEIGHBORING_MIN_MAX = 1 +} AUTO_MIN_MAX_MODE; + +typedef enum { + // Try the full image with different values. + LPF_PICK_FROM_FULL_IMAGE, + // 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 +} LPF_PICK_METHOD; + +typedef 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, +} MODE_SEARCH_SKIP_LOGIC; + +typedef enum { + NO_PRUNE = 0, + // eliminates one tx type in vertical and horizontal direction + PRUNE_ONE = 1, + // eliminates two tx types in each direction + PRUNE_TWO = 2, + // adaptively prunes the least perspective tx types out of all 16 + // (tuned to provide negligible quality loss) + PRUNE_2D_ACCURATE = 3, + // similar, but applies much more aggressive pruning to get better speed-up + PRUNE_2D_FAST = 4, +} TX_TYPE_PRUNE_MODE; + +typedef struct { + TX_TYPE_PRUNE_MODE prune_mode; + int fast_intra_tx_type_search; + int fast_inter_tx_type_search; + + // 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; +} TX_TYPE_SEARCH; + +typedef enum { + // Search partitions using RD criterion + SEARCH_PARTITION, + + // Always use a fixed size partition + FIXED_PARTITION, + + REFERENCE_PARTITION +} PARTITION_SEARCH_TYPE; + +typedef struct MV_SPEED_FEATURES { + // Motion search method (Diamond, NSTEP, Hex, Big Diamond, Square, etc). + SEARCH_METHODS search_method; + + // This parameter controls which step in the n-step process we start at. + // It's changed adaptively based on circumstances. + int reduce_first_step_size; + + // 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_METHODS subpel_search_method; + + // Maximum number of steps in logarithmic subpel search before giving up. + int subpel_iters_per_step; + + // Control when to stop subpel search + int subpel_force_stop; +} MV_SPEED_FEATURES; + +#define MAX_MESH_STEP 4 + +typedef struct MESH_PATTERN { + int range; + int interval; +} MESH_PATTERN; + +typedef enum { + GM_FULL_SEARCH, + GM_REDUCED_REF_SEARCH, + GM_DISABLE_SEARCH +} GM_SEARCH_TYPE; + +typedef enum { + GM_ERRORADV_TR_0, + GM_ERRORADV_TR_1, + GM_ERRORADV_TR_2, + GM_ERRORADV_TR_TYPES, +} GM_ERRORADV_TYPE; + +typedef enum { + NO_TRELLIS_OPT, // No trellis optimization + FULL_TRELLIS_OPT, // Trellis optimization in all stages + FINAL_PASS_TRELLIS_OPT // Trellis optimization in only the final encode pass +} TRELLIS_OPT_TYPE; + +typedef enum { + FULL_TXFM_RD, + LOW_TXFM_RD, +} TXFM_RD_MODEL; + +typedef struct SPEED_FEATURES { + MV_SPEED_FEATURES mv; + + // Frame level coding parameter update + int frame_parameter_update; + + RECODE_LOOP_TYPE recode_loop; + + // Trellis (dynamic programming) optimization of quantized values + TRELLIS_OPT_TYPE optimize_coefficients; + + // Global motion warp error threshold + GM_ERRORADV_TYPE gm_erroradv_type; + + // 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; + + // Limit the inter mode tested in the RD loop + int reduce_inter_modes; + + // Do not compute the global motion parameters for a LAST2_FRAME or + // LAST3_FRAME if the GOLDEN_FRAME is closer and it has a non identity + // global model. + int selective_ref_gm; + + // If 1 we iterate finding a best reference for 2 ref frames together - via + // a log search that iterates 4 times (check around mv for last for best + // error of combined predictor then check around mv for alt). If 0 we + // we just use the best motion vector found for each frame by itself. + BLOCK_SIZE comp_inter_joint_search_thresh; + + // 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; + + // Determine which method we use to determine transform size. We can choose + // between options like full rd, largest for prediction size, largest + // for intra and model coefs for the rest. + TX_SIZE_SEARCH_METHOD tx_size_search_method; + + // 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; + + PARTITION_SEARCH_TYPE partition_search_type; + + 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; + + // Model based breakout after interpolation filter search + // 0: no breakout + // 1: use model based rd breakout + int model_based_post_interp_filter_breakout; + + // Used if partition_search_type = FIXED_SIZE_PARTITION + BLOCK_SIZE always_this_block_size; + + // Drop less likely to be picked reference frames in the RD search. + // Has three levels for now: 0, 1 and 2, where higher levels prune more + // aggressively than lower ones. (0 means no pruning). + int selective_ref_frame; + + // 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; + + // Use a ML model to prune horz and vert partitions + int ml_prune_rect_partition; + + // Use a ML model to prune horz_a, horz_b, vert_a and vert_b partitions. + int ml_prune_ab_partition; + + // Use a ML model to prune horz4 and vert4 partitions. + int ml_prune_4_partition; + + int fast_cdef_search; + + // 2-pass coding block partition search + int two_pass_partition_search; + + // Use the mode decisions made in the initial partition search to prune mode + // candidates, e.g. ref frames. + int mode_pruning_based_on_two_pass_partition_search; + + // 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; + + // Prune reference frames for rectangular partitions. + int prune_ref_frame_for_rect_partitions; + + // Sets min and max partition sizes for this superblock based on the + // same superblock in last encoded frame, and the left and above neighbor. + AUTO_MIN_MAX_MODE auto_min_max_partition_size; + // Ensures the rd based auto partition search will always + // go down at least to the specified level. + BLOCK_SIZE rd_auto_partition_min_limit; + + // Min and max 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; + + // Whether or not we allow partitions one smaller or one greater than the last + // frame's partitioning. Only used if use_lastframe_partitioning is set. + int adjust_partitioning_from_last_frame; + + // Disables sub 8x8 blocksizes in different scenarios: Choices are to disable + // it always, to allow it for only Last frame and Intra, disable it for all + // inter modes or to enable it always. + int disable_split_mask; + + // TODO(jingning): combine the related motion search speed features + // This allows us to use motion search at other sizes as a starting + // point for this motion search and limits the search range around it. + int adaptive_motion_search; + + // Flag for allowing some use of exhaustive searches; + int allow_exhaustive_searches; + + // Threshold for allowing exhaistive motion search. + int exhaustive_searches_thresh; + + // Maximum number of exhaustive searches for a frame. + int max_exaustive_pct; + + // Pattern to be used for any exhaustive mesh searches. + MESH_PATTERN mesh_patterns[MAX_MESH_STEP]; + + // Allows sub 8x8 modes to use the prediction filter that was determined + // best for 8x8 mode. If set to 0 we always re check all the filters for + // sizes less than 8x8, 1 means we check all filter modes if no 8x8 filter + // was selected, and 2 means we use 8 tap if no 8x8 filter mode was selected. + int adaptive_pred_interp_filter; + + // Adaptive prediction mode search + int adaptive_mode_search; + + int cb_partition_search; + + int alt_ref_search_fp; + + // 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; + + // A source variance threshold below which filter search is disabled + // Choose a very large value (UINT_MAX) to use 8-tap always + unsigned int disable_filter_search_var_thresh; + + // A source variance threshold below which wedge search is disabled + unsigned int disable_wedge_search_var_thresh; + + // Whether fast wedge sign estimate is used + int fast_wedge_sign_estimate; + + // 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]; + + // This feature controls how the loop filter level is determined. + LPF_PICK_METHOD lpf_pick; + + // This feature controls whether we do the expensive context update and + // calculation in the rd coefficient costing loop. + int use_fast_coef_costing; + + // This feature controls the tolerence vs target used in deciding whether to + // recode a frame. It has no meaning if recode is disabled. + int recode_tolerance; + + // 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; + + // 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]; + + // Allow skipping partition search for still image frame + int allow_partition_search_skip; + + // Fast approximation of av1_model_rd_from_var_lapndz + int simple_model_rd_from_var; + + // If true, sub-pixel search uses the exact convolve function used for final + // encoding and decoding; otherwise, it uses bilinear interpolation. + int use_accurate_subpel_search; + + // Whether to compute distortion in the image domain (slower but + // more accurate), or in the transform domain (faster but less acurate). + // 0: use image domain + // 1: use transform domain in tx_type search, and use image domain for + // RD_STATS + // 2: use transform domain + int use_transform_domain_distortion; + + GM_SEARCH_TYPE gm_search_type; + + // whether to disable the global motion recode loop + int gm_disable_recode; + + // Do limited interpolation filter search for dual filters, since best choice + // usually includes EIGHTTAP_REGULAR. + int use_fast_interpolation_filter_search; + + // Save results of interpolation_filter_search for a block + // Check mv and ref_frames before search, if they are same with previous + // saved results, it can be skipped. + int skip_repeat_interpolation_filter_search; + + // Use a hash table to store previously computed optimized qcoeffs from + // expensive calls to optimize_txb. + int use_hash_based_trellis; + + // flag to drop some ref frames in compound motion search + int drop_ref; + + // flag to allow skipping intra mode for inter frame prediction + int skip_intra_in_interframe; + + // Use hash table to store intra(keyframe only) txb transform search results + // to avoid repeated search on the same residue signal. + int use_intra_txb_hash; + + // Use hash table to store inter txb transform search results + // to avoid repeated search on the same residue signal. + int use_inter_txb_hash; + + // Use hash table to store macroblock RD search results + // to avoid repeated search on the same residue signal. + int use_mb_rd_hash; + + // Calculate RD cost before doing optimize_b, and skip if the cost is large. + int optimize_b_precheck; + + // Use model rd instead of transform search in jnt_comp + int jnt_comp_fast_tx_search; + + // Skip mv search in jnt_comp + int jnt_comp_skip_mv_search; + + // 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; + + // Dynamically estimate final rd from prediction error and mode cost + int inter_mode_rd_model_estimation; + + // 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 is better to search same + // single inter mode as a group. + int prune_comp_search_by_single_result; + + // Reuse the inter_intra_mode search result from NEARESTMV mode to other + // single ref modes + int reuse_inter_intra_mode; + + // 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; + + // flag to skip NEWMV mode in drl if the motion search result is the same + int skip_repeated_newmv; +} SPEED_FEATURES; + +struct AV1_COMP; + +void av1_set_speed_features_framesize_independent(struct AV1_COMP *cpi); +void av1_set_speed_features_framesize_dependent(struct AV1_COMP *cpi); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // AOM_AV1_ENCODER_SPEED_FEATURES_H_ |