1/* 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11#ifndef VP9_ENCODER_VP9_SPEED_FEATURES_H_ 12#define VP9_ENCODER_VP9_SPEED_FEATURES_H_ 13 14#include "vp9/common/vp9_enums.h" 15 16#ifdef __cplusplus 17extern "C" { 18#endif 19 20enum { 21 INTRA_ALL = (1 << DC_PRED) | 22 (1 << V_PRED) | (1 << H_PRED) | 23 (1 << D45_PRED) | (1 << D135_PRED) | 24 (1 << D117_PRED) | (1 << D153_PRED) | 25 (1 << D207_PRED) | (1 << D63_PRED) | 26 (1 << TM_PRED), 27 INTRA_DC = (1 << DC_PRED), 28 INTRA_DC_TM = (1 << DC_PRED) | (1 << TM_PRED), 29 INTRA_DC_H_V = (1 << DC_PRED) | (1 << V_PRED) | (1 << H_PRED), 30 INTRA_DC_TM_H_V = (1 << DC_PRED) | (1 << TM_PRED) | (1 << V_PRED) | 31 (1 << H_PRED) 32}; 33 34enum { 35 INTER_ALL = (1 << NEARESTMV) | (1 << NEARMV) | (1 << ZEROMV) | (1 << NEWMV), 36 INTER_NEAREST = (1 << NEARESTMV), 37 INTER_NEAREST_NEAR_NEW = (1 << NEARESTMV) | (1 << NEARMV) | (1 << NEWMV), 38 INTER_NEAREST_NEAR_ZERO = (1 << NEARESTMV) | (1 << NEARMV) | (1 << ZEROMV), 39}; 40 41enum { 42 DISABLE_ALL_INTER_SPLIT = (1 << THR_COMP_GA) | 43 (1 << THR_COMP_LA) | 44 (1 << THR_ALTR) | 45 (1 << THR_GOLD) | 46 (1 << THR_LAST), 47 48 DISABLE_ALL_SPLIT = (1 << THR_INTRA) | DISABLE_ALL_INTER_SPLIT, 49 50 DISABLE_COMPOUND_SPLIT = (1 << THR_COMP_GA) | (1 << THR_COMP_LA), 51 52 LAST_AND_INTRA_SPLIT_ONLY = (1 << THR_COMP_GA) | 53 (1 << THR_COMP_LA) | 54 (1 << THR_ALTR) | 55 (1 << THR_GOLD) 56}; 57 58typedef enum { 59 DIAMOND = 0, 60 NSTEP = 1, 61 HEX = 2, 62 BIGDIA = 3, 63 SQUARE = 4, 64 FAST_HEX = 5, 65 FAST_DIAMOND = 6 66} SEARCH_METHODS; 67 68typedef enum { 69 // No recode. 70 DISALLOW_RECODE = 0, 71 // Allow recode for KF and exceeding maximum frame bandwidth. 72 ALLOW_RECODE_KFMAXBW = 1, 73 // Allow recode only for KF/ARF/GF frames. 74 ALLOW_RECODE_KFARFGF = 2, 75 // Allow recode for all frames based on bitrate constraints. 76 ALLOW_RECODE = 3, 77} RECODE_LOOP_TYPE; 78 79typedef enum { 80 SUBPEL_TREE = 0, 81 SUBPEL_TREE_PRUNED = 1, 82 // Other methods to come 83} SUBPEL_SEARCH_METHODS; 84 85typedef enum { 86 NO_MOTION_THRESHOLD = 0, 87 LOW_MOTION_THRESHOLD = 7 88} MOTION_THRESHOLD; 89 90typedef enum { 91 LAST_FRAME_PARTITION_OFF = 0, 92 LAST_FRAME_PARTITION_LOW_MOTION = 1, 93 LAST_FRAME_PARTITION_ALL = 2 94} LAST_FRAME_PARTITION_METHOD; 95 96typedef enum { 97 USE_FULL_RD = 0, 98 USE_LARGESTALL, 99 USE_TX_8X8 100} TX_SIZE_SEARCH_METHOD; 101 102typedef enum { 103 NOT_IN_USE = 0, 104 RELAXED_NEIGHBORING_MIN_MAX = 1, 105 CONSTRAIN_NEIGHBORING_MIN_MAX = 2, 106 STRICT_NEIGHBORING_MIN_MAX = 3 107} AUTO_MIN_MAX_MODE; 108 109typedef enum { 110 // Try the full image with different values. 111 LPF_PICK_FROM_FULL_IMAGE, 112 // Try a small portion of the image with different values. 113 LPF_PICK_FROM_SUBIMAGE, 114 // Estimate the level based on quantizer and frame type 115 LPF_PICK_FROM_Q, 116 // Pick 0 to disable LPF if LPF was enabled last frame 117 LPF_PICK_MINIMAL_LPF 118} LPF_PICK_METHOD; 119 120typedef enum { 121 // Terminate search early based on distortion so far compared to 122 // qp step, distortion in the neighborhood of the frame, etc. 123 FLAG_EARLY_TERMINATE = 1 << 0, 124 125 // Skips comp inter modes if the best so far is an intra mode. 126 FLAG_SKIP_COMP_BESTINTRA = 1 << 1, 127 128 // Skips oblique intra modes if the best so far is an inter mode. 129 FLAG_SKIP_INTRA_BESTINTER = 1 << 3, 130 131 // Skips oblique intra modes at angles 27, 63, 117, 153 if the best 132 // intra so far is not one of the neighboring directions. 133 FLAG_SKIP_INTRA_DIRMISMATCH = 1 << 4, 134 135 // Skips intra modes other than DC_PRED if the source variance is small 136 FLAG_SKIP_INTRA_LOWVAR = 1 << 5, 137} MODE_SEARCH_SKIP_LOGIC; 138 139typedef enum { 140 FLAG_SKIP_EIGHTTAP = 1 << EIGHTTAP, 141 FLAG_SKIP_EIGHTTAP_SMOOTH = 1 << EIGHTTAP_SMOOTH, 142 FLAG_SKIP_EIGHTTAP_SHARP = 1 << EIGHTTAP_SHARP, 143} INTERP_FILTER_MASK; 144 145typedef enum { 146 // Search partitions using RD/NONRD criterion 147 SEARCH_PARTITION = 0, 148 149 // Always use a fixed size partition 150 FIXED_PARTITION = 1, 151 152 // Use a fixed size partition in every 64X64 SB, where the size is 153 // determined based on source variance 154 VAR_BASED_FIXED_PARTITION = 2, 155 156 REFERENCE_PARTITION = 3, 157 158 // Use an arbitrary partitioning scheme based on source variance within 159 // a 64X64 SB 160 VAR_BASED_PARTITION, 161 162 // Use non-fixed partitions based on source variance 163 SOURCE_VAR_BASED_PARTITION 164} PARTITION_SEARCH_TYPE; 165 166typedef enum { 167 // Does a dry run to see if any of the contexts need to be updated or not, 168 // before the final run. 169 TWO_LOOP = 0, 170 171 // No dry run conducted. 172 ONE_LOOP = 1, 173 174 // No dry run, also only half the coef contexts and bands are updated. 175 // The rest are not updated at all. 176 ONE_LOOP_REDUCED = 2 177} FAST_COEFF_UPDATE; 178 179typedef struct MV_SPEED_FEATURES { 180 // Motion search method (Diamond, NSTEP, Hex, Big Diamond, Square, etc). 181 SEARCH_METHODS search_method; 182 183 // This parameter controls which step in the n-step process we start at. 184 // It's changed adaptively based on circumstances. 185 int reduce_first_step_size; 186 187 // If this is set to 1, we limit the motion search range to 2 times the 188 // largest motion vector found in the last frame. 189 int auto_mv_step_size; 190 191 // Subpel_search_method can only be subpel_tree which does a subpixel 192 // logarithmic search that keeps stepping at 1/2 pixel units until 193 // you stop getting a gain, and then goes on to 1/4 and repeats 194 // the same process. Along the way it skips many diagonals. 195 SUBPEL_SEARCH_METHODS subpel_search_method; 196 197 // Maximum number of steps in logarithmic subpel search before giving up. 198 int subpel_iters_per_step; 199 200 // Control when to stop subpel search 201 int subpel_force_stop; 202 203 // This variable sets the step_param used in full pel motion search. 204 int fullpel_search_step_param; 205} MV_SPEED_FEATURES; 206 207typedef struct SPEED_FEATURES { 208 MV_SPEED_FEATURES mv; 209 210 // Frame level coding parameter update 211 int frame_parameter_update; 212 213 RECODE_LOOP_TYPE recode_loop; 214 215 // Trellis (dynamic programming) optimization of quantized values (+1, 0). 216 int optimize_coefficients; 217 218 // Always set to 0. If on it enables 0 cost background transmission 219 // (except for the initial transmission of the segmentation). The feature is 220 // disabled because the addition of very large block sizes make the 221 // backgrounds very to cheap to encode, and the segmentation we have 222 // adds overhead. 223 int static_segmentation; 224 225 // If 1 we iterate finding a best reference for 2 ref frames together - via 226 // a log search that iterates 4 times (check around mv for last for best 227 // error of combined predictor then check around mv for alt). If 0 we 228 // we just use the best motion vector found for each frame by itself. 229 BLOCK_SIZE comp_inter_joint_search_thresh; 230 231 // This variable is used to cap the maximum number of times we skip testing a 232 // mode to be evaluated. A high value means we will be faster. 233 int adaptive_rd_thresh; 234 235 // Enables skipping the reconstruction step (idct, recon) in the 236 // intermediate steps assuming the last frame didn't have too many intra 237 // blocks and the q is less than a threshold. 238 int skip_encode_sb; 239 int skip_encode_frame; 240 // Speed feature to allow or disallow skipping of recode at block 241 // level within a frame. 242 int allow_skip_recode; 243 244 // This variable allows us to reuse the last frames partition choices 245 // (64x64 v 32x32 etc) for this frame. It can be set to only use the last 246 // frame as a starting point in low motion scenes or always use it. If set 247 // we use last partitioning_redo frequency to determine how often to redo 248 // the partitioning from scratch. Adjust_partitioning_from_last_frame 249 // enables us to adjust up or down one partitioning from the last frames 250 // partitioning. 251 LAST_FRAME_PARTITION_METHOD use_lastframe_partitioning; 252 253 // The threshold is to determine how slow the motino is, it is used when 254 // use_lastframe_partitioning is set to LAST_FRAME_PARTITION_LOW_MOTION 255 MOTION_THRESHOLD lf_motion_threshold; 256 257 // Determine which method we use to determine transform size. We can choose 258 // between options like full rd, largest for prediction size, largest 259 // for intra and model coefs for the rest. 260 TX_SIZE_SEARCH_METHOD tx_size_search_method; 261 262 // Low precision 32x32 fdct keeps everything in 16 bits and thus is less 263 // precise but significantly faster than the non lp version. 264 int use_lp32x32fdct; 265 266 // TODO(JBB): remove this as its no longer used. 267 268 // After looking at the first set of modes (set by index here), skip 269 // checking modes for reference frames that don't match the reference frame 270 // of the best so far. 271 int mode_skip_start; 272 273 // TODO(JBB): Remove this. 274 int reference_masking; 275 276 PARTITION_SEARCH_TYPE partition_search_type; 277 278 // Used if partition_search_type = FIXED_SIZE_PARTITION 279 BLOCK_SIZE always_this_block_size; 280 281 // Skip rectangular partition test when partition type none gives better 282 // rd than partition type split. 283 int less_rectangular_check; 284 285 // Disable testing non square partitions. (eg 16x32) 286 int use_square_partition_only; 287 288 // Sets min and max partition sizes for this 64x64 region based on the 289 // same 64x64 in last encoded frame, and the left and above neighbor. 290 AUTO_MIN_MAX_MODE auto_min_max_partition_size; 291 292 // Min and max partition size we enable (block_size) as per auto 293 // min max, but also used by adjust partitioning, and pick_partitioning. 294 BLOCK_SIZE min_partition_size; 295 BLOCK_SIZE max_partition_size; 296 297 // Whether or not we allow partitions one smaller or one greater than the last 298 // frame's partitioning. Only used if use_lastframe_partitioning is set. 299 int adjust_partitioning_from_last_frame; 300 301 // How frequently we re do the partitioning from scratch. Only used if 302 // use_lastframe_partitioning is set. 303 int last_partitioning_redo_frequency; 304 305 // This enables constrained copy partitioning, which, given an input block 306 // size bsize, will copy previous partition for partitions less than bsize, 307 // otherwise bsize partition is used. bsize is currently set to 16x16. 308 // Used for the case where motion is detected in superblock. 309 int constrain_copy_partition; 310 311 // Disables sub 8x8 blocksizes in different scenarios: Choices are to disable 312 // it always, to allow it for only Last frame and Intra, disable it for all 313 // inter modes or to enable it always. 314 int disable_split_mask; 315 316 // TODO(jingning): combine the related motion search speed features 317 // This allows us to use motion search at other sizes as a starting 318 // point for this motion search and limits the search range around it. 319 int adaptive_motion_search; 320 321 int schedule_mode_search; 322 323 // Allows sub 8x8 modes to use the prediction filter that was determined 324 // best for 8x8 mode. If set to 0 we always re check all the filters for 325 // sizes less than 8x8, 1 means we check all filter modes if no 8x8 filter 326 // was selected, and 2 means we use 8 tap if no 8x8 filter mode was selected. 327 int adaptive_pred_interp_filter; 328 329 // Adaptive prediction mode search 330 int adaptive_mode_search; 331 332 // Chessboard pattern prediction filter type search 333 int cb_pred_filter_search; 334 335 int cb_partition_search; 336 337 int motion_field_mode_search; 338 339 int alt_ref_search_fp; 340 341 // Fast quantization process path 342 int use_quant_fp; 343 344 // Search through variable block partition types in non-RD mode decision 345 // encoding process for RTC. 346 int partition_check; 347 348 // Use finer quantizer in every other few frames that run variable block 349 // partition type search. 350 int force_frame_boost; 351 352 // Maximally allowed base quantization index fluctuation. 353 int max_delta_qindex; 354 355 // Implements various heuristics to skip searching modes 356 // The heuristics selected are based on flags 357 // defined in the MODE_SEARCH_SKIP_HEURISTICS enum 358 unsigned int mode_search_skip_flags; 359 360 // A source variance threshold below which filter search is disabled 361 // Choose a very large value (UINT_MAX) to use 8-tap always 362 unsigned int disable_filter_search_var_thresh; 363 364 // These bit masks allow you to enable or disable intra modes for each 365 // transform size separately. 366 int intra_y_mode_mask[TX_SIZES]; 367 int intra_uv_mode_mask[TX_SIZES]; 368 369 // This variable enables an early break out of mode testing if the model for 370 // rd built from the prediction signal indicates a value that's much 371 // higher than the best rd we've seen so far. 372 int use_rd_breakout; 373 374 // This enables us to use an estimate for intra rd based on dc mode rather 375 // than choosing an actual uv mode in the stage of encoding before the actual 376 // final encode. 377 int use_uv_intra_rd_estimate; 378 379 // This feature controls how the loop filter level is determined. 380 LPF_PICK_METHOD lpf_pick; 381 382 // This feature limits the number of coefficients updates we actually do 383 // by only looking at counts from 1/2 the bands. 384 FAST_COEFF_UPDATE use_fast_coef_updates; 385 386 // This flag controls the use of non-RD mode decision. 387 int use_nonrd_pick_mode; 388 389 // A binary mask indicating if NEARESTMV, NEARMV, ZEROMV, NEWMV 390 // modes are used in order from LSB to MSB for each BLOCK_SIZE. 391 int inter_mode_mask[BLOCK_SIZES]; 392 393 // This feature controls whether we do the expensive context update and 394 // calculation in the rd coefficient costing loop. 395 int use_fast_coef_costing; 396 397 // This feature controls the tolerence vs target used in deciding whether to 398 // recode a frame. It has no meaning if recode is disabled. 399 int recode_tolerance; 400 401 // This variable controls the maximum block size where intra blocks can be 402 // used in inter frames. 403 // TODO(aconverse): Fold this into one of the other many mode skips 404 BLOCK_SIZE max_intra_bsize; 405 406 // The frequency that we check if SOURCE_VAR_BASED_PARTITION or 407 // FIXED_PARTITION search type should be used. 408 int search_type_check_frequency; 409 410 // When partition is pre-set, the inter prediction result from pick_inter_mode 411 // can be reused in final block encoding process. It is enabled only for real- 412 // time mode speed 6. 413 int reuse_inter_pred_sby; 414 415 // This variable sets the encode_breakout threshold. Currently, it is only 416 // enabled in real time mode. 417 int encode_breakout_thresh; 418 419 // In real time encoding, increase the threshold for NEWMV. 420 int elevate_newmv_thresh; 421 422 // default interp filter choice 423 INTERP_FILTER default_interp_filter; 424 425 // Early termination in transform size search, which only applies while 426 // tx_size_search_method is USE_FULL_RD. 427 int tx_size_search_breakout; 428 429 // adaptive interp_filter search to allow skip of certain filter types. 430 int adaptive_interp_filter_search; 431 432 // mask for skip evaluation of certain interp_filter type. 433 INTERP_FILTER_MASK interp_filter_search_mask; 434 435 // Partition search early breakout thresholds. 436 int64_t partition_search_breakout_dist_thr; 437 int partition_search_breakout_rate_thr; 438} SPEED_FEATURES; 439 440struct VP9_COMP; 441 442void vp9_set_speed_features(struct VP9_COMP *cpi); 443 444#ifdef __cplusplus 445} // extern "C" 446#endif 447 448#endif // VP9_ENCODER_VP9_SPEED_FEATURES_H_ 449 450