av1/encoder/speed_features.c - aom - Git at Google

 /*
  * 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.
  */

 #include <limits.h>

 #include "av1/encoder/encoder.h"
 #include "av1/encoder/speed_features.h"
 #include "av1/encoder/rdopt.h"

 #include "aom_dsp/aom_dsp_common.h"

 // Mesh search patters for various speed settings
 static MESH_PATTERN best_quality_mesh_pattern[MAX_MESH_STEP] = {
   { 64, 4 }, { 28, 2 }, { 15, 1 }, { 7, 1 }
 };

 #define MAX_MESH_SPEED 5  // Max speed setting for mesh motion method
 static MESH_PATTERN
     good_quality_mesh_patterns[MAX_MESH_SPEED + 1][MAX_MESH_STEP] = {
       { { 64, 8 }, { 28, 4 }, { 15, 1 }, { 7, 1 } },
       { { 64, 8 }, { 28, 4 }, { 15, 1 }, { 7, 1 } },
       { { 64, 8 }, { 14, 2 }, { 7, 1 }, { 7, 1 } },
       { { 64, 16 }, { 24, 8 }, { 12, 4 }, { 7, 1 } },
       { { 64, 16 }, { 24, 8 }, { 12, 4 }, { 7, 1 } },
       { { 64, 16 }, { 24, 8 }, { 12, 4 }, { 7, 1 } },
     };
 static unsigned char good_quality_max_mesh_pct[MAX_MESH_SPEED + 1] = {
   50, 25, 15, 5, 1, 1
 };

 // Intra only frames, golden frames (except alt ref overlays) and
 // alt ref frames tend to be coded at a higher than ambient quality
 static int frame_is_boosted(const AV1_COMP *cpi) {
   return frame_is_kf_gf_arf(cpi);
 }

 // Sets a partition size down to which the auto partition code will always
 // search (can go lower), based on the image dimensions. The logic here
 // is that the extent to which ringing artefacts are offensive, depends
 // partly on the screen area that over which they propogate. Propogation is
 // limited by transform block size but the screen area take up by a given block
 // size will be larger for a small image format stretched to full screen.
 static BLOCK_SIZE set_partition_min_limit(AV1_COMMON *const cm) {
   unsigned int screen_area = (cm->width * cm->height);

   // Select block size based on image format size.
   if (screen_area < 1280 * 720) {
     // Formats smaller in area than 720P
     return BLOCK_4X4;
   } else if (screen_area < 1920 * 1080) {
     // Format >= 720P and < 1080P
     return BLOCK_8X8;
   } else {
     // Formats 1080P and up
     return BLOCK_16X16;
   }
 }

 static void set_good_speed_feature_framesize_dependent(AV1_COMP *cpi,
                                                        SPEED_FEATURES *sf,
                                                        int speed) {
   AV1_COMMON *const cm = &cpi->common;

   if (speed >= 1) {
     if (AOMMIN(cm->width, cm->height) >= 720) {
       sf->disable_split_mask =
           cm->show_frame ? DISABLE_ALL_SPLIT : DISABLE_ALL_INTER_SPLIT;
       sf->partition_search_breakout_dist_thr = (1 << 23);
     } else {
       sf->disable_split_mask = DISABLE_COMPOUND_SPLIT;
       sf->partition_search_breakout_dist_thr = (1 << 21);
     }
   }

   if (speed >= 2) {
     if (AOMMIN(cm->width, cm->height) >= 720) {
       sf->disable_split_mask =
           cm->show_frame ? DISABLE_ALL_SPLIT : DISABLE_ALL_INTER_SPLIT;
       sf->adaptive_pred_interp_filter = 0;
       sf->partition_search_breakout_dist_thr = (1 << 24);
       sf->partition_search_breakout_rate_thr = 120;
     } else {
       sf->disable_split_mask = LAST_AND_INTRA_SPLIT_ONLY;
       sf->partition_search_breakout_dist_thr = (1 << 22);
       sf->partition_search_breakout_rate_thr = 100;
     }
     sf->rd_auto_partition_min_limit = set_partition_min_limit(cm);
   }

   if (speed >= 3) {
     if (AOMMIN(cm->width, cm->height) >= 720) {
       sf->disable_split_mask = DISABLE_ALL_SPLIT;
       sf->schedule_mode_search = cm->base_qindex < 220 ? 1 : 0;
       sf->partition_search_breakout_dist_thr = (1 << 25);
       sf->partition_search_breakout_rate_thr = 200;
     } else {
       sf->max_intra_bsize = BLOCK_32X32;
       sf->disable_split_mask = DISABLE_ALL_INTER_SPLIT;
       sf->schedule_mode_search = cm->base_qindex < 175 ? 1 : 0;
       sf->partition_search_breakout_dist_thr = (1 << 23);
       sf->partition_search_breakout_rate_thr = 120;
     }
   }

   // If this is a two pass clip that fits the criteria for animated or
   // graphics content then reset disable_split_mask for speeds 1-4.
   // Also if the image edge is internal to the coded area.
   if ((speed >= 1) && (cpi->oxcf.pass == 2) &&
       ((cpi->twopass.fr_content_type == FC_GRAPHICS_ANIMATION) ||
        (av1_internal_image_edge(cpi)))) {
     sf->disable_split_mask = DISABLE_COMPOUND_SPLIT;
   }

   if (speed >= 4) {
     if (AOMMIN(cm->width, cm->height) >= 720) {
       sf->partition_search_breakout_dist_thr = (1 << 26);
     } else {
       sf->partition_search_breakout_dist_thr = (1 << 24);
     }
     sf->disable_split_mask = DISABLE_ALL_SPLIT;
   }
 }

 static void set_good_speed_feature(AV1_COMP *cpi, AV1_COMMON *cm,
                                    SPEED_FEATURES *sf, int speed) {
   const int boosted = frame_is_boosted(cpi);

   sf->adaptive_rd_thresh = 1;

   if (speed >= 1) {
     if ((cpi->twopass.fr_content_type == FC_GRAPHICS_ANIMATION) ||
         av1_internal_image_edge(cpi)) {
       sf->use_square_partition_only = !frame_is_boosted(cpi);
     } else {
       sf->use_square_partition_only = !frame_is_intra_only(cm);
     }

     sf->less_rectangular_check = 1;

     sf->use_rd_breakout = 1;
     sf->adaptive_motion_search = 1;
     sf->mv.auto_mv_step_size = 1;
     sf->adaptive_rd_thresh = 2;
     sf->mv.subpel_iters_per_step = 1;
     sf->mode_skip_start = 10;
     sf->adaptive_pred_interp_filter = 1;

     sf->recode_loop = ALLOW_RECODE_KFARFGF;
     sf->intra_y_mode_mask[TX_32X32] = INTRA_DC_H_V;
     sf->intra_uv_mode_mask[TX_32X32] = INTRA_DC_H_V;
     sf->intra_y_mode_mask[TX_16X16] = INTRA_DC_H_V;
     sf->intra_uv_mode_mask[TX_16X16] = INTRA_DC_H_V;

     sf->tx_size_search_breakout = 1;
     sf->partition_search_breakout_rate_thr = 80;
   }

   if (speed >= 2) {
     sf->tx_size_search_method =
         frame_is_boosted(cpi) ? USE_FULL_RD : USE_LARGESTALL;

     sf->mode_search_skip_flags =
         (cm->frame_type == KEY_FRAME) ? 0 : FLAG_SKIP_INTRA_DIRMISMATCH |
                                                 FLAG_SKIP_INTRA_BESTINTER |
                                                 FLAG_SKIP_COMP_BESTINTRA |
                                                 FLAG_SKIP_INTRA_LOWVAR;
     sf->disable_filter_search_var_thresh = 100;
     sf->comp_inter_joint_search_thresh = BLOCK_SIZES;
     sf->auto_min_max_partition_size = RELAXED_NEIGHBORING_MIN_MAX;
     sf->allow_partition_search_skip = 1;
     sf->use_upsampled_references = 0;
   }

   if (speed >= 3) {
     sf->use_square_partition_only = !frame_is_intra_only(cm);
     sf->tx_size_search_method =
         frame_is_intra_only(cm) ? USE_FULL_RD : USE_LARGESTALL;
     sf->mv.subpel_search_method = SUBPEL_TREE_PRUNED;
     sf->adaptive_pred_interp_filter = 0;
     sf->adaptive_mode_search = 1;
     sf->cb_partition_search = !boosted;
     sf->cb_pred_filter_search = 1;
     sf->alt_ref_search_fp = 1;
     sf->recode_loop = ALLOW_RECODE_KFMAXBW;
     sf->adaptive_rd_thresh = 3;
     sf->mode_skip_start = 6;
     sf->intra_y_mode_mask[TX_32X32] = INTRA_DC;
     sf->intra_uv_mode_mask[TX_32X32] = INTRA_DC;
     sf->adaptive_interp_filter_search = 1;
   }

   if (speed >= 4) {
     sf->use_square_partition_only = 1;
     sf->tx_size_search_method = USE_LARGESTALL;
     sf->mv.search_method = BIGDIA;
     sf->mv.subpel_search_method = SUBPEL_TREE_PRUNED_MORE;
     sf->adaptive_rd_thresh = 4;
     if (cm->frame_type != KEY_FRAME)
       sf->mode_search_skip_flags |= FLAG_EARLY_TERMINATE;
     sf->disable_filter_search_var_thresh = 200;
     sf->use_lp32x32fdct = 1;
     sf->use_fast_coef_updates = ONE_LOOP_REDUCED;
     sf->use_fast_coef_costing = 1;
     sf->partition_search_breakout_rate_thr = 300;
   }

   if (speed >= 5) {
     int i;
     sf->optimize_coefficients = 0;
     sf->mv.search_method = HEX;
     sf->disable_filter_search_var_thresh = 500;
     for (i = 0; i < TX_SIZES; ++i) {
       sf->intra_y_mode_mask[i] = INTRA_DC;
       sf->intra_uv_mode_mask[i] = INTRA_DC;
     }
     sf->partition_search_breakout_rate_thr = 500;
     sf->mv.reduce_first_step_size = 1;
     sf->simple_model_rd_from_var = 1;
   }
 }

 static void set_rt_speed_feature_framesize_dependent(AV1_COMP *cpi,
                                                      SPEED_FEATURES *sf,
                                                      int speed) {
   AV1_COMMON *const cm = &cpi->common;

   if (speed >= 1) {
     if (AOMMIN(cm->width, cm->height) >= 720) {
       sf->disable_split_mask =
           cm->show_frame ? DISABLE_ALL_SPLIT : DISABLE_ALL_INTER_SPLIT;
     } else {
       sf->disable_split_mask = DISABLE_COMPOUND_SPLIT;
     }
   }

   if (speed >= 2) {
     if (AOMMIN(cm->width, cm->height) >= 720) {
       sf->disable_split_mask =
           cm->show_frame ? DISABLE_ALL_SPLIT : DISABLE_ALL_INTER_SPLIT;
     } else {
       sf->disable_split_mask = LAST_AND_INTRA_SPLIT_ONLY;
     }
   }

   if (speed >= 5) {
     if (AOMMIN(cm->width, cm->height) >= 720) {
       sf->partition_search_breakout_dist_thr = (1 << 25);
     } else {
       sf->partition_search_breakout_dist_thr = (1 << 23);
     }
   }

   if (speed >= 7) {
     sf->encode_breakout_thresh =
         (AOMMIN(cm->width, cm->height) >= 720) ? 800 : 300;
   }
 }

 static void set_rt_speed_feature(AV1_COMP *cpi, SPEED_FEATURES *sf, int speed,
                                  aom_tune_content content) {
   AV1_COMMON *const cm = &cpi->common;
   const int is_keyframe = cm->frame_type == KEY_FRAME;
   const int frames_since_key = is_keyframe ? 0 : cpi->rc.frames_since_key;
   sf->static_segmentation = 0;
   sf->adaptive_rd_thresh = 1;
   sf->use_fast_coef_costing = 1;
   sf->allow_exhaustive_searches = 0;
   sf->exhaustive_searches_thresh = INT_MAX;
   sf->use_upsampled_references = 0;

   if (speed >= 1) {
     sf->use_square_partition_only = !frame_is_intra_only(cm);
     sf->less_rectangular_check = 1;
     sf->tx_size_search_method =
         frame_is_intra_only(cm) ? USE_FULL_RD : USE_LARGESTALL;

     sf->use_rd_breakout = 1;

     sf->adaptive_motion_search = 1;
     sf->adaptive_pred_interp_filter = 1;
     sf->mv.auto_mv_step_size = 1;
     sf->adaptive_rd_thresh = 2;
     sf->intra_y_mode_mask[TX_32X32] = INTRA_DC_H_V;
     sf->intra_uv_mode_mask[TX_32X32] = INTRA_DC_H_V;
     sf->intra_uv_mode_mask[TX_16X16] = INTRA_DC_H_V;
   }

   if (speed >= 2) {
     sf->mode_search_skip_flags =
         (cm->frame_type == KEY_FRAME) ? 0 : FLAG_SKIP_INTRA_DIRMISMATCH |
                                                 FLAG_SKIP_INTRA_BESTINTER |
                                                 FLAG_SKIP_COMP_BESTINTRA |
                                                 FLAG_SKIP_INTRA_LOWVAR;
     sf->adaptive_pred_interp_filter = 2;
     sf->disable_filter_search_var_thresh = 50;
     sf->comp_inter_joint_search_thresh = BLOCK_SIZES;
     sf->auto_min_max_partition_size = RELAXED_NEIGHBORING_MIN_MAX;
     sf->lf_motion_threshold = LOW_MOTION_THRESHOLD;
     sf->adjust_partitioning_from_last_frame = 1;
     sf->last_partitioning_redo_frequency = 3;
     sf->use_lp32x32fdct = 1;
     sf->mode_skip_start = 11;
     sf->intra_y_mode_mask[TX_16X16] = INTRA_DC_H_V;
   }

   if (speed >= 3) {
     sf->use_square_partition_only = 1;
     sf->disable_filter_search_var_thresh = 100;
     sf->mv.subpel_iters_per_step = 1;
     sf->adaptive_rd_thresh = 4;
     sf->mode_skip_start = 6;
     sf->optimize_coefficients = 0;
     sf->disable_split_mask = DISABLE_ALL_SPLIT;
     sf->lpf_pick = LPF_PICK_FROM_Q;
   }

   if (speed >= 4) {
     int i;
     sf->last_partitioning_redo_frequency = 4;
     sf->adaptive_rd_thresh = 5;
     sf->use_fast_coef_costing = 0;
     sf->auto_min_max_partition_size = STRICT_NEIGHBORING_MIN_MAX;
     sf->adjust_partitioning_from_last_frame =
         cm->last_frame_type != cm->frame_type ||
         (0 == (frames_since_key + 1) % sf->last_partitioning_redo_frequency);
     sf->mv.subpel_force_stop = 1;
     for (i = 0; i < TX_SIZES; i++) {
       sf->intra_y_mode_mask[i] = INTRA_DC_H_V;
       sf->intra_uv_mode_mask[i] = INTRA_DC;
     }
     sf->intra_y_mode_mask[TX_32X32] = INTRA_DC;
     sf->frame_parameter_update = 0;
     sf->mv.search_method = FAST_HEX;

     sf->inter_mode_mask[BLOCK_32X32] = INTER_NEAREST_NEAR_NEW;
     sf->inter_mode_mask[BLOCK_32X64] = INTER_NEAREST;
     sf->inter_mode_mask[BLOCK_64X32] = INTER_NEAREST;
     sf->inter_mode_mask[BLOCK_64X64] = INTER_NEAREST;
     sf->max_intra_bsize = BLOCK_32X32;
   }

   if (speed >= 5) {
     sf->use_quant_fp = !is_keyframe;
     sf->auto_min_max_partition_size =
         is_keyframe ? RELAXED_NEIGHBORING_MIN_MAX : STRICT_NEIGHBORING_MIN_MAX;
     sf->default_max_partition_size = BLOCK_32X32;
     sf->default_min_partition_size = BLOCK_8X8;
     sf->force_frame_boost =
         is_keyframe ||
         (frames_since_key % (sf->last_partitioning_redo_frequency << 1) == 1);
     sf->max_delta_qindex = is_keyframe ? 20 : 15;
     sf->partition_search_type = REFERENCE_PARTITION;
     sf->inter_mode_mask[BLOCK_32X32] = INTER_NEAREST_NEW_ZERO;
     sf->inter_mode_mask[BLOCK_32X64] = INTER_NEAREST_NEW_ZERO;
     sf->inter_mode_mask[BLOCK_64X32] = INTER_NEAREST_NEW_ZERO;
     sf->inter_mode_mask[BLOCK_64X64] = INTER_NEAREST_NEW_ZERO;
     sf->adaptive_rd_thresh = 2;
     // This feature is only enabled when partition search is disabled.
     sf->reuse_inter_pred_sby = 1;
     sf->partition_search_breakout_rate_thr = 200;
     sf->coeff_prob_appx_step = 4;
     sf->use_fast_coef_updates = is_keyframe ? TWO_LOOP : ONE_LOOP_REDUCED;
     sf->mode_search_skip_flags = FLAG_SKIP_INTRA_DIRMISMATCH;
     sf->tx_size_search_method = is_keyframe ? USE_LARGESTALL : USE_TX_8X8;
     sf->simple_model_rd_from_var = 1;

     if (!is_keyframe) {
       int i;
       if (content == AOM_CONTENT_SCREEN) {
         for (i = 0; i < BLOCK_SIZES; ++i)
           sf->intra_y_mode_bsize_mask[i] = INTRA_DC_TM_H_V;
       } else {
         for (i = 0; i < BLOCK_SIZES; ++i)
           if (i >= BLOCK_16X16)
             sf->intra_y_mode_bsize_mask[i] = INTRA_DC;
           else
             // Use H and V intra mode for block sizes <= 16X16.
             sf->intra_y_mode_bsize_mask[i] = INTRA_DC_H_V;
       }
     }
   }

   if (speed >= 6) {
     // Adaptively switch between SOURCE_VAR_BASED_PARTITION and FIXED_PARTITION.
     sf->partition_search_type = VAR_BASED_PARTITION;
     // Turn on this to use non-RD key frame coding mode.
     sf->mv.search_method = NSTEP;
     sf->mv.reduce_first_step_size = 1;
   }

   if (speed >= 7) {
     sf->adaptive_rd_thresh = 3;
     sf->mv.search_method = FAST_DIAMOND;
     sf->mv.fullpel_search_step_param = 10;
   }
   if (speed >= 8) {
     sf->adaptive_rd_thresh = 4;
     sf->mv.subpel_force_stop = 2;
     sf->lpf_pick = LPF_PICK_MINIMAL_LPF;
   }
 }

 void av1_set_speed_features_framesize_dependent(AV1_COMP *cpi) {
   SPEED_FEATURES *const sf = &cpi->sf;
   const AV1EncoderConfig *const oxcf = &cpi->oxcf;
   RD_OPT *const rd = &cpi->rd;
   int i;

   if (oxcf->mode == REALTIME) {
     set_rt_speed_feature_framesize_dependent(cpi, sf, oxcf->speed);
   } else if (oxcf->mode == GOOD) {
     set_good_speed_feature_framesize_dependent(cpi, sf, oxcf->speed);
   }

   if (sf->disable_split_mask == DISABLE_ALL_SPLIT) {
     sf->adaptive_pred_interp_filter = 0;
   }

   if (cpi->encode_breakout && oxcf->mode == REALTIME &&
       sf->encode_breakout_thresh > cpi->encode_breakout) {
     cpi->encode_breakout = sf->encode_breakout_thresh;
   }

   // Check for masked out split cases.
   for (i = 0; i < MAX_REFS; ++i) {
     if (sf->disable_split_mask & (1 << i)) {
       rd->thresh_mult_sub8x8[i] = INT_MAX;
     }
   }
 }

 void av1_set_speed_features_framesize_independent(AV1_COMP *cpi) {
   SPEED_FEATURES *const sf = &cpi->sf;
   AV1_COMMON *const cm = &cpi->common;
   MACROBLOCK *const x = &cpi->td.mb;
   const AV1EncoderConfig *const oxcf = &cpi->oxcf;
   int i;

   // best quality defaults
   sf->frame_parameter_update = 1;
   sf->mv.search_method = NSTEP;
   sf->recode_loop = ALLOW_RECODE;
   sf->mv.subpel_search_method = SUBPEL_TREE;
   sf->mv.subpel_iters_per_step = 2;
   sf->mv.subpel_force_stop = 0;
   sf->optimize_coefficients = !is_lossless_requested(&cpi->oxcf);
   sf->mv.reduce_first_step_size = 0;
   sf->coeff_prob_appx_step = 1;
   sf->mv.auto_mv_step_size = 0;
   sf->mv.fullpel_search_step_param = 6;
   sf->comp_inter_joint_search_thresh = BLOCK_4X4;
   sf->adaptive_rd_thresh = 0;
   sf->tx_size_search_method = USE_FULL_RD;
   sf->use_lp32x32fdct = 0;
   sf->adaptive_motion_search = 0;
   sf->adaptive_pred_interp_filter = 0;
   sf->adaptive_mode_search = 0;
   sf->cb_pred_filter_search = 0;
   sf->cb_partition_search = 0;
   sf->alt_ref_search_fp = 0;
   sf->use_quant_fp = 0;
   sf->partition_search_type = SEARCH_PARTITION;
   sf->less_rectangular_check = 0;
   sf->use_square_partition_only = 0;
   sf->auto_min_max_partition_size = NOT_IN_USE;
   sf->rd_auto_partition_min_limit = BLOCK_4X4;
   sf->default_max_partition_size = BLOCK_64X64;
   sf->default_min_partition_size = BLOCK_4X4;
   sf->adjust_partitioning_from_last_frame = 0;
   sf->last_partitioning_redo_frequency = 4;
   sf->disable_split_mask = 0;
   sf->mode_search_skip_flags = 0;
   sf->force_frame_boost = 0;
   sf->max_delta_qindex = 0;
   sf->disable_filter_search_var_thresh = 0;
   sf->adaptive_interp_filter_search = 0;
   sf->allow_partition_search_skip = 0;
   sf->use_upsampled_references = 1;

   for (i = 0; i < TX_SIZES; i++) {
     sf->intra_y_mode_mask[i] = INTRA_ALL;
     sf->intra_uv_mode_mask[i] = INTRA_ALL;
   }
   sf->use_rd_breakout = 0;
   sf->lpf_pick = LPF_PICK_FROM_FULL_IMAGE;
   sf->use_fast_coef_updates = TWO_LOOP;
   sf->use_fast_coef_costing = 0;
   sf->mode_skip_start = MAX_MODES;  // Mode index at which mode skip mask set
   sf->schedule_mode_search = 0;
   for (i = 0; i < BLOCK_SIZES; ++i) sf->inter_mode_mask[i] = INTER_ALL;
   sf->max_intra_bsize = BLOCK_64X64;
   sf->reuse_inter_pred_sby = 0;
   // This setting only takes effect when partition_search_type is set
   // to FIXED_PARTITION.
   sf->always_this_block_size = BLOCK_16X16;
   sf->search_type_check_frequency = 50;
   sf->encode_breakout_thresh = 0;
   // Recode loop tolerance %.
   sf->recode_tolerance = 25;
   sf->default_interp_filter = SWITCHABLE;
   sf->tx_size_search_breakout = 0;
   sf->partition_search_breakout_dist_thr = 0;
   sf->partition_search_breakout_rate_thr = 0;
   sf->simple_model_rd_from_var = 0;

   if (oxcf->mode == REALTIME)
     set_rt_speed_feature(cpi, sf, oxcf->speed, oxcf->content);
   else if (oxcf->mode == GOOD)
     set_good_speed_feature(cpi, cm, sf, oxcf->speed);

   cpi->full_search_sad = av1_full_search_sad;
   cpi->diamond_search_sad = av1_diamond_search_sad;

   sf->allow_exhaustive_searches = 1;
   if (oxcf->mode == BEST) {
     if (cpi->twopass.fr_content_type == FC_GRAPHICS_ANIMATION)
       sf->exhaustive_searches_thresh = (1 << 20);
     else
       sf->exhaustive_searches_thresh = (1 << 21);
     sf->max_exaustive_pct = 100;
     for (i = 0; i < MAX_MESH_STEP; ++i) {
       sf->mesh_patterns[i].range = best_quality_mesh_pattern[i].range;
       sf->mesh_patterns[i].interval = best_quality_mesh_pattern[i].interval;
     }
   } else {
     int speed = (oxcf->speed > MAX_MESH_SPEED) ? MAX_MESH_SPEED : oxcf->speed;
     if (cpi->twopass.fr_content_type == FC_GRAPHICS_ANIMATION)
       sf->exhaustive_searches_thresh = (1 << 22);
     else
       sf->exhaustive_searches_thresh = (1 << 23);
     sf->max_exaustive_pct = good_quality_max_mesh_pct[speed];
     if (speed > 0)
       sf->exhaustive_searches_thresh = sf->exhaustive_searches_thresh << 1;

     for (i = 0; i < MAX_MESH_STEP; ++i) {
       sf->mesh_patterns[i].range = good_quality_mesh_patterns[speed][i].range;
       sf->mesh_patterns[i].interval =
           good_quality_mesh_patterns[speed][i].interval;
     }
   }

   // Slow quant, dct and trellis not worthwhile for first pass
   // so make sure they are always turned off.
   if (oxcf->pass == 1) sf->optimize_coefficients = 0;

   // No recode for 1 pass.
   if (oxcf->pass == 0) {
     sf->recode_loop = DISALLOW_RECODE;
     sf->optimize_coefficients = 0;
   }

   if (sf->mv.subpel_search_method == SUBPEL_TREE) {
     cpi->find_fractional_mv_step = av1_find_best_sub_pixel_tree;
   } else if (sf->mv.subpel_search_method == SUBPEL_TREE_PRUNED) {
     cpi->find_fractional_mv_step = av1_find_best_sub_pixel_tree_pruned;
   } else if (sf->mv.subpel_search_method == SUBPEL_TREE_PRUNED_MORE) {
     cpi->find_fractional_mv_step = av1_find_best_sub_pixel_tree_pruned_more;
   } else if (sf->mv.subpel_search_method == SUBPEL_TREE_PRUNED_EVENMORE) {
     cpi->find_fractional_mv_step = av1_find_best_sub_pixel_tree_pruned_evenmore;
   }

 #if !CONFIG_AOM_QM
   x->optimize = sf->optimize_coefficients == 1 && oxcf->pass != 1;
 #else
   // FIXME: trellis not very efficient for quantisation matrices
   x->optimize = 0;
 #endif

   x->min_partition_size = sf->default_min_partition_size;
   x->max_partition_size = sf->default_max_partition_size;

   if (!cpi->oxcf.frame_periodic_boost) {
     sf->max_delta_qindex = 0;
   }
 }
	/*
	* 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.
	*/

	#include <limits.h>

	#include "av1/encoder/encoder.h"
	#include "av1/encoder/speed_features.h"
	#include "av1/encoder/rdopt.h"

	#include "aom_dsp/aom_dsp_common.h"

	// Mesh search patters for various speed settings
	static MESH_PATTERN best_quality_mesh_pattern[MAX_MESH_STEP] = {
	{ 64, 4 }, { 28, 2 }, { 15, 1 }, { 7, 1 }
	};

	#define MAX_MESH_SPEED 5 // Max speed setting for mesh motion method
	static MESH_PATTERN
	good_quality_mesh_patterns[MAX_MESH_SPEED + 1][MAX_MESH_STEP] = {
	{ { 64, 8 }, { 28, 4 }, { 15, 1 }, { 7, 1 } },
	{ { 64, 8 }, { 28, 4 }, { 15, 1 }, { 7, 1 } },
	{ { 64, 8 }, { 14, 2 }, { 7, 1 }, { 7, 1 } },
	{ { 64, 16 }, { 24, 8 }, { 12, 4 }, { 7, 1 } },
	{ { 64, 16 }, { 24, 8 }, { 12, 4 }, { 7, 1 } },
	{ { 64, 16 }, { 24, 8 }, { 12, 4 }, { 7, 1 } },
	};
	static unsigned char good_quality_max_mesh_pct[MAX_MESH_SPEED + 1] = {
	50, 25, 15, 5, 1, 1
	};

	// Intra only frames, golden frames (except alt ref overlays) and
	// alt ref frames tend to be coded at a higher than ambient quality
	static int frame_is_boosted(const AV1_COMP *cpi) {
	return frame_is_kf_gf_arf(cpi);
	}

	// Sets a partition size down to which the auto partition code will always
	// search (can go lower), based on the image dimensions. The logic here
	// is that the extent to which ringing artefacts are offensive, depends
	// partly on the screen area that over which they propogate. Propogation is
	// limited by transform block size but the screen area take up by a given block
	// size will be larger for a small image format stretched to full screen.
	static BLOCK_SIZE set_partition_min_limit(AV1_COMMON *const cm) {
	unsigned int screen_area = (cm->width * cm->height);

	// Select block size based on image format size.
	if (screen_area < 1280 * 720) {
	// Formats smaller in area than 720P
	return BLOCK_4X4;
	} else if (screen_area < 1920 * 1080) {
	// Format >= 720P and < 1080P
	return BLOCK_8X8;
	} else {
	// Formats 1080P and up
	return BLOCK_16X16;
	}
	}

	static void set_good_speed_feature_framesize_dependent(AV1_COMP *cpi,
	SPEED_FEATURES *sf,
	int speed) {
	AV1_COMMON *const cm = &cpi->common;

	if (speed >= 1) {
	if (AOMMIN(cm->width, cm->height) >= 720) {
	sf->disable_split_mask =
	cm->show_frame ? DISABLE_ALL_SPLIT : DISABLE_ALL_INTER_SPLIT;
	sf->partition_search_breakout_dist_thr = (1 << 23);
	} else {
	sf->disable_split_mask = DISABLE_COMPOUND_SPLIT;
	sf->partition_search_breakout_dist_thr = (1 << 21);
	}
	}

	if (speed >= 2) {
	if (AOMMIN(cm->width, cm->height) >= 720) {
	sf->disable_split_mask =
	cm->show_frame ? DISABLE_ALL_SPLIT : DISABLE_ALL_INTER_SPLIT;
	sf->adaptive_pred_interp_filter = 0;
	sf->partition_search_breakout_dist_thr = (1 << 24);
	sf->partition_search_breakout_rate_thr = 120;
	} else {
	sf->disable_split_mask = LAST_AND_INTRA_SPLIT_ONLY;
	sf->partition_search_breakout_dist_thr = (1 << 22);
	sf->partition_search_breakout_rate_thr = 100;
	}
	sf->rd_auto_partition_min_limit = set_partition_min_limit(cm);
	}

	if (speed >= 3) {
	if (AOMMIN(cm->width, cm->height) >= 720) {
	sf->disable_split_mask = DISABLE_ALL_SPLIT;
	sf->schedule_mode_search = cm->base_qindex < 220 ? 1 : 0;
	sf->partition_search_breakout_dist_thr = (1 << 25);
	sf->partition_search_breakout_rate_thr = 200;
	} else {
	sf->max_intra_bsize = BLOCK_32X32;
	sf->disable_split_mask = DISABLE_ALL_INTER_SPLIT;
	sf->schedule_mode_search = cm->base_qindex < 175 ? 1 : 0;
	sf->partition_search_breakout_dist_thr = (1 << 23);
	sf->partition_search_breakout_rate_thr = 120;
	}
	}

	// If this is a two pass clip that fits the criteria for animated or
	// graphics content then reset disable_split_mask for speeds 1-4.
	// Also if the image edge is internal to the coded area.
	if ((speed >= 1) && (cpi->oxcf.pass == 2) &&
	((cpi->twopass.fr_content_type == FC_GRAPHICS_ANIMATION) \|\|
	(av1_internal_image_edge(cpi)))) {
	sf->disable_split_mask = DISABLE_COMPOUND_SPLIT;
	}

	if (speed >= 4) {
	if (AOMMIN(cm->width, cm->height) >= 720) {
	sf->partition_search_breakout_dist_thr = (1 << 26);
	} else {
	sf->partition_search_breakout_dist_thr = (1 << 24);
	}
	sf->disable_split_mask = DISABLE_ALL_SPLIT;
	}
	}

	static void set_good_speed_feature(AV1_COMP cpi, AV1_COMMON cm,
	SPEED_FEATURES *sf, int speed) {
	const int boosted = frame_is_boosted(cpi);

	sf->adaptive_rd_thresh = 1;

	if (speed >= 1) {
	if ((cpi->twopass.fr_content_type == FC_GRAPHICS_ANIMATION) \|\|
	av1_internal_image_edge(cpi)) {
	sf->use_square_partition_only = !frame_is_boosted(cpi);
	} else {
	sf->use_square_partition_only = !frame_is_intra_only(cm);
	}

	sf->less_rectangular_check = 1;

	sf->use_rd_breakout = 1;
	sf->adaptive_motion_search = 1;
	sf->mv.auto_mv_step_size = 1;
	sf->adaptive_rd_thresh = 2;
	sf->mv.subpel_iters_per_step = 1;
	sf->mode_skip_start = 10;
	sf->adaptive_pred_interp_filter = 1;

	sf->recode_loop = ALLOW_RECODE_KFARFGF;
	sf->intra_y_mode_mask[TX_32X32] = INTRA_DC_H_V;
	sf->intra_uv_mode_mask[TX_32X32] = INTRA_DC_H_V;
	sf->intra_y_mode_mask[TX_16X16] = INTRA_DC_H_V;
	sf->intra_uv_mode_mask[TX_16X16] = INTRA_DC_H_V;

	sf->tx_size_search_breakout = 1;
	sf->partition_search_breakout_rate_thr = 80;
	}

	if (speed >= 2) {
	sf->tx_size_search_method =
	frame_is_boosted(cpi) ? USE_FULL_RD : USE_LARGESTALL;

	sf->mode_search_skip_flags =
	(cm->frame_type == KEY_FRAME) ? 0 : FLAG_SKIP_INTRA_DIRMISMATCH \|
	FLAG_SKIP_INTRA_BESTINTER \|
	FLAG_SKIP_COMP_BESTINTRA \|
	FLAG_SKIP_INTRA_LOWVAR;
	sf->disable_filter_search_var_thresh = 100;
	sf->comp_inter_joint_search_thresh = BLOCK_SIZES;
	sf->auto_min_max_partition_size = RELAXED_NEIGHBORING_MIN_MAX;
	sf->allow_partition_search_skip = 1;
	sf->use_upsampled_references = 0;
	}

	if (speed >= 3) {
	sf->use_square_partition_only = !frame_is_intra_only(cm);
	sf->tx_size_search_method =
	frame_is_intra_only(cm) ? USE_FULL_RD : USE_LARGESTALL;
	sf->mv.subpel_search_method = SUBPEL_TREE_PRUNED;
	sf->adaptive_pred_interp_filter = 0;
	sf->adaptive_mode_search = 1;
	sf->cb_partition_search = !boosted;
	sf->cb_pred_filter_search = 1;
	sf->alt_ref_search_fp = 1;
	sf->recode_loop = ALLOW_RECODE_KFMAXBW;
	sf->adaptive_rd_thresh = 3;
	sf->mode_skip_start = 6;
	sf->intra_y_mode_mask[TX_32X32] = INTRA_DC;
	sf->intra_uv_mode_mask[TX_32X32] = INTRA_DC;
	sf->adaptive_interp_filter_search = 1;
	}

	if (speed >= 4) {
	sf->use_square_partition_only = 1;
	sf->tx_size_search_method = USE_LARGESTALL;
	sf->mv.search_method = BIGDIA;
	sf->mv.subpel_search_method = SUBPEL_TREE_PRUNED_MORE;
	sf->adaptive_rd_thresh = 4;
	if (cm->frame_type != KEY_FRAME)
	sf->mode_search_skip_flags \|= FLAG_EARLY_TERMINATE;
	sf->disable_filter_search_var_thresh = 200;
	sf->use_lp32x32fdct = 1;
	sf->use_fast_coef_updates = ONE_LOOP_REDUCED;
	sf->use_fast_coef_costing = 1;
	sf->partition_search_breakout_rate_thr = 300;
	}

	if (speed >= 5) {
	int i;
	sf->optimize_coefficients = 0;
	sf->mv.search_method = HEX;
	sf->disable_filter_search_var_thresh = 500;
	for (i = 0; i < TX_SIZES; ++i) {
	sf->intra_y_mode_mask[i] = INTRA_DC;
	sf->intra_uv_mode_mask[i] = INTRA_DC;
	}
	sf->partition_search_breakout_rate_thr = 500;
	sf->mv.reduce_first_step_size = 1;
	sf->simple_model_rd_from_var = 1;
	}
	}

	static void set_rt_speed_feature_framesize_dependent(AV1_COMP *cpi,
	SPEED_FEATURES *sf,
	int speed) {
	AV1_COMMON *const cm = &cpi->common;

	if (speed >= 1) {
	if (AOMMIN(cm->width, cm->height) >= 720) {
	sf->disable_split_mask =
	cm->show_frame ? DISABLE_ALL_SPLIT : DISABLE_ALL_INTER_SPLIT;
	} else {
	sf->disable_split_mask = DISABLE_COMPOUND_SPLIT;
	}
	}

	if (speed >= 2) {
	if (AOMMIN(cm->width, cm->height) >= 720) {
	sf->disable_split_mask =
	cm->show_frame ? DISABLE_ALL_SPLIT : DISABLE_ALL_INTER_SPLIT;
	} else {
	sf->disable_split_mask = LAST_AND_INTRA_SPLIT_ONLY;
	}
	}

	if (speed >= 5) {
	if (AOMMIN(cm->width, cm->height) >= 720) {
	sf->partition_search_breakout_dist_thr = (1 << 25);
	} else {
	sf->partition_search_breakout_dist_thr = (1 << 23);
	}
	}

	if (speed >= 7) {
	sf->encode_breakout_thresh =
	(AOMMIN(cm->width, cm->height) >= 720) ? 800 : 300;
	}
	}

	static void set_rt_speed_feature(AV1_COMP cpi, SPEED_FEATURES sf, int speed,
	aom_tune_content content) {
	AV1_COMMON *const cm = &cpi->common;
	const int is_keyframe = cm->frame_type == KEY_FRAME;
	const int frames_since_key = is_keyframe ? 0 : cpi->rc.frames_since_key;
	sf->static_segmentation = 0;
	sf->adaptive_rd_thresh = 1;
	sf->use_fast_coef_costing = 1;
	sf->allow_exhaustive_searches = 0;
	sf->exhaustive_searches_thresh = INT_MAX;
	sf->use_upsampled_references = 0;

	if (speed >= 1) {
	sf->use_square_partition_only = !frame_is_intra_only(cm);
	sf->less_rectangular_check = 1;
	sf->tx_size_search_method =
	frame_is_intra_only(cm) ? USE_FULL_RD : USE_LARGESTALL;

	sf->use_rd_breakout = 1;

	sf->adaptive_motion_search = 1;
	sf->adaptive_pred_interp_filter = 1;
	sf->mv.auto_mv_step_size = 1;
	sf->adaptive_rd_thresh = 2;
	sf->intra_y_mode_mask[TX_32X32] = INTRA_DC_H_V;
	sf->intra_uv_mode_mask[TX_32X32] = INTRA_DC_H_V;
	sf->intra_uv_mode_mask[TX_16X16] = INTRA_DC_H_V;
	}

	if (speed >= 2) {
	sf->mode_search_skip_flags =
	(cm->frame_type == KEY_FRAME) ? 0 : FLAG_SKIP_INTRA_DIRMISMATCH \|
	FLAG_SKIP_INTRA_BESTINTER \|
	FLAG_SKIP_COMP_BESTINTRA \|
	FLAG_SKIP_INTRA_LOWVAR;
	sf->adaptive_pred_interp_filter = 2;
	sf->disable_filter_search_var_thresh = 50;
	sf->comp_inter_joint_search_thresh = BLOCK_SIZES;
	sf->auto_min_max_partition_size = RELAXED_NEIGHBORING_MIN_MAX;
	sf->lf_motion_threshold = LOW_MOTION_THRESHOLD;
	sf->adjust_partitioning_from_last_frame = 1;
	sf->last_partitioning_redo_frequency = 3;
	sf->use_lp32x32fdct = 1;
	sf->mode_skip_start = 11;
	sf->intra_y_mode_mask[TX_16X16] = INTRA_DC_H_V;
	}

	if (speed >= 3) {
	sf->use_square_partition_only = 1;
	sf->disable_filter_search_var_thresh = 100;
	sf->mv.subpel_iters_per_step = 1;
	sf->adaptive_rd_thresh = 4;
	sf->mode_skip_start = 6;
	sf->optimize_coefficients = 0;
	sf->disable_split_mask = DISABLE_ALL_SPLIT;
	sf->lpf_pick = LPF_PICK_FROM_Q;
	}

	if (speed >= 4) {
	int i;
	sf->last_partitioning_redo_frequency = 4;
	sf->adaptive_rd_thresh = 5;
	sf->use_fast_coef_costing = 0;
	sf->auto_min_max_partition_size = STRICT_NEIGHBORING_MIN_MAX;
	sf->adjust_partitioning_from_last_frame =
	cm->last_frame_type != cm->frame_type \|\|
	(0 == (frames_since_key + 1) % sf->last_partitioning_redo_frequency);
	sf->mv.subpel_force_stop = 1;
	for (i = 0; i < TX_SIZES; i++) {
	sf->intra_y_mode_mask[i] = INTRA_DC_H_V;
	sf->intra_uv_mode_mask[i] = INTRA_DC;
	}
	sf->intra_y_mode_mask[TX_32X32] = INTRA_DC;
	sf->frame_parameter_update = 0;
	sf->mv.search_method = FAST_HEX;

	sf->inter_mode_mask[BLOCK_32X32] = INTER_NEAREST_NEAR_NEW;
	sf->inter_mode_mask[BLOCK_32X64] = INTER_NEAREST;
	sf->inter_mode_mask[BLOCK_64X32] = INTER_NEAREST;
	sf->inter_mode_mask[BLOCK_64X64] = INTER_NEAREST;
	sf->max_intra_bsize = BLOCK_32X32;
	}

	if (speed >= 5) {
	sf->use_quant_fp = !is_keyframe;
	sf->auto_min_max_partition_size =
	is_keyframe ? RELAXED_NEIGHBORING_MIN_MAX : STRICT_NEIGHBORING_MIN_MAX;
	sf->default_max_partition_size = BLOCK_32X32;
	sf->default_min_partition_size = BLOCK_8X8;
	sf->force_frame_boost =
	is_keyframe \|\|
	(frames_since_key % (sf->last_partitioning_redo_frequency << 1) == 1);
	sf->max_delta_qindex = is_keyframe ? 20 : 15;
	sf->partition_search_type = REFERENCE_PARTITION;
	sf->inter_mode_mask[BLOCK_32X32] = INTER_NEAREST_NEW_ZERO;
	sf->inter_mode_mask[BLOCK_32X64] = INTER_NEAREST_NEW_ZERO;
	sf->inter_mode_mask[BLOCK_64X32] = INTER_NEAREST_NEW_ZERO;
	sf->inter_mode_mask[BLOCK_64X64] = INTER_NEAREST_NEW_ZERO;
	sf->adaptive_rd_thresh = 2;
	// This feature is only enabled when partition search is disabled.
	sf->reuse_inter_pred_sby = 1;
	sf->partition_search_breakout_rate_thr = 200;
	sf->coeff_prob_appx_step = 4;
	sf->use_fast_coef_updates = is_keyframe ? TWO_LOOP : ONE_LOOP_REDUCED;
	sf->mode_search_skip_flags = FLAG_SKIP_INTRA_DIRMISMATCH;
	sf->tx_size_search_method = is_keyframe ? USE_LARGESTALL : USE_TX_8X8;
	sf->simple_model_rd_from_var = 1;

	if (!is_keyframe) {
	int i;
	if (content == AOM_CONTENT_SCREEN) {
	for (i = 0; i < BLOCK_SIZES; ++i)
	sf->intra_y_mode_bsize_mask[i] = INTRA_DC_TM_H_V;
	} else {
	for (i = 0; i < BLOCK_SIZES; ++i)
	if (i >= BLOCK_16X16)
	sf->intra_y_mode_bsize_mask[i] = INTRA_DC;
	else
	// Use H and V intra mode for block sizes <= 16X16.
	sf->intra_y_mode_bsize_mask[i] = INTRA_DC_H_V;
	}
	}
	}

	if (speed >= 6) {
	// Adaptively switch between SOURCE_VAR_BASED_PARTITION and FIXED_PARTITION.
	sf->partition_search_type = VAR_BASED_PARTITION;
	// Turn on this to use non-RD key frame coding mode.
	sf->mv.search_method = NSTEP;
	sf->mv.reduce_first_step_size = 1;
	}

	if (speed >= 7) {
	sf->adaptive_rd_thresh = 3;
	sf->mv.search_method = FAST_DIAMOND;
	sf->mv.fullpel_search_step_param = 10;
	}
	if (speed >= 8) {
	sf->adaptive_rd_thresh = 4;
	sf->mv.subpel_force_stop = 2;
	sf->lpf_pick = LPF_PICK_MINIMAL_LPF;
	}
	}

	void av1_set_speed_features_framesize_dependent(AV1_COMP *cpi) {
	SPEED_FEATURES *const sf = &cpi->sf;
	const AV1EncoderConfig *const oxcf = &cpi->oxcf;
	RD_OPT *const rd = &cpi->rd;
	int i;

	if (oxcf->mode == REALTIME) {
	set_rt_speed_feature_framesize_dependent(cpi, sf, oxcf->speed);
	} else if (oxcf->mode == GOOD) {
	set_good_speed_feature_framesize_dependent(cpi, sf, oxcf->speed);
	}

	if (sf->disable_split_mask == DISABLE_ALL_SPLIT) {
	sf->adaptive_pred_interp_filter = 0;
	}

	if (cpi->encode_breakout && oxcf->mode == REALTIME &&
	sf->encode_breakout_thresh > cpi->encode_breakout) {
	cpi->encode_breakout = sf->encode_breakout_thresh;
	}

	// Check for masked out split cases.
	for (i = 0; i < MAX_REFS; ++i) {
	if (sf->disable_split_mask & (1 << i)) {
	rd->thresh_mult_sub8x8[i] = INT_MAX;
	}
	}
	}

	void av1_set_speed_features_framesize_independent(AV1_COMP *cpi) {
	SPEED_FEATURES *const sf = &cpi->sf;
	AV1_COMMON *const cm = &cpi->common;
	MACROBLOCK *const x = &cpi->td.mb;
	const AV1EncoderConfig *const oxcf = &cpi->oxcf;
	int i;

	// best quality defaults
	sf->frame_parameter_update = 1;
	sf->mv.search_method = NSTEP;
	sf->recode_loop = ALLOW_RECODE;
	sf->mv.subpel_search_method = SUBPEL_TREE;
	sf->mv.subpel_iters_per_step = 2;
	sf->mv.subpel_force_stop = 0;
	sf->optimize_coefficients = !is_lossless_requested(&cpi->oxcf);
	sf->mv.reduce_first_step_size = 0;
	sf->coeff_prob_appx_step = 1;
	sf->mv.auto_mv_step_size = 0;
	sf->mv.fullpel_search_step_param = 6;
	sf->comp_inter_joint_search_thresh = BLOCK_4X4;
	sf->adaptive_rd_thresh = 0;
	sf->tx_size_search_method = USE_FULL_RD;
	sf->use_lp32x32fdct = 0;
	sf->adaptive_motion_search = 0;
	sf->adaptive_pred_interp_filter = 0;
	sf->adaptive_mode_search = 0;
	sf->cb_pred_filter_search = 0;
	sf->cb_partition_search = 0;
	sf->alt_ref_search_fp = 0;
	sf->use_quant_fp = 0;
	sf->partition_search_type = SEARCH_PARTITION;
	sf->less_rectangular_check = 0;
	sf->use_square_partition_only = 0;
	sf->auto_min_max_partition_size = NOT_IN_USE;
	sf->rd_auto_partition_min_limit = BLOCK_4X4;
	sf->default_max_partition_size = BLOCK_64X64;
	sf->default_min_partition_size = BLOCK_4X4;
	sf->adjust_partitioning_from_last_frame = 0;
	sf->last_partitioning_redo_frequency = 4;
	sf->disable_split_mask = 0;
	sf->mode_search_skip_flags = 0;
	sf->force_frame_boost = 0;
	sf->max_delta_qindex = 0;
	sf->disable_filter_search_var_thresh = 0;
	sf->adaptive_interp_filter_search = 0;
	sf->allow_partition_search_skip = 0;
	sf->use_upsampled_references = 1;

	for (i = 0; i < TX_SIZES; i++) {
	sf->intra_y_mode_mask[i] = INTRA_ALL;
	sf->intra_uv_mode_mask[i] = INTRA_ALL;
	}
	sf->use_rd_breakout = 0;
	sf->lpf_pick = LPF_PICK_FROM_FULL_IMAGE;
	sf->use_fast_coef_updates = TWO_LOOP;
	sf->use_fast_coef_costing = 0;
	sf->mode_skip_start = MAX_MODES; // Mode index at which mode skip mask set
	sf->schedule_mode_search = 0;
	for (i = 0; i < BLOCK_SIZES; ++i) sf->inter_mode_mask[i] = INTER_ALL;
	sf->max_intra_bsize = BLOCK_64X64;
	sf->reuse_inter_pred_sby = 0;
	// This setting only takes effect when partition_search_type is set
	// to FIXED_PARTITION.
	sf->always_this_block_size = BLOCK_16X16;
	sf->search_type_check_frequency = 50;
	sf->encode_breakout_thresh = 0;
	// Recode loop tolerance %.
	sf->recode_tolerance = 25;
	sf->default_interp_filter = SWITCHABLE;
	sf->tx_size_search_breakout = 0;
	sf->partition_search_breakout_dist_thr = 0;
	sf->partition_search_breakout_rate_thr = 0;
	sf->simple_model_rd_from_var = 0;

	if (oxcf->mode == REALTIME)
	set_rt_speed_feature(cpi, sf, oxcf->speed, oxcf->content);
	else if (oxcf->mode == GOOD)
	set_good_speed_feature(cpi, cm, sf, oxcf->speed);

	cpi->full_search_sad = av1_full_search_sad;
	cpi->diamond_search_sad = av1_diamond_search_sad;

	sf->allow_exhaustive_searches = 1;
	if (oxcf->mode == BEST) {
	if (cpi->twopass.fr_content_type == FC_GRAPHICS_ANIMATION)
	sf->exhaustive_searches_thresh = (1 << 20);
	else
	sf->exhaustive_searches_thresh = (1 << 21);
	sf->max_exaustive_pct = 100;
	for (i = 0; i < MAX_MESH_STEP; ++i) {
	sf->mesh_patterns[i].range = best_quality_mesh_pattern[i].range;
	sf->mesh_patterns[i].interval = best_quality_mesh_pattern[i].interval;
	}
	} else {
	int speed = (oxcf->speed > MAX_MESH_SPEED) ? MAX_MESH_SPEED : oxcf->speed;
	if (cpi->twopass.fr_content_type == FC_GRAPHICS_ANIMATION)
	sf->exhaustive_searches_thresh = (1 << 22);
	else
	sf->exhaustive_searches_thresh = (1 << 23);
	sf->max_exaustive_pct = good_quality_max_mesh_pct[speed];
	if (speed > 0)
	sf->exhaustive_searches_thresh = sf->exhaustive_searches_thresh << 1;

	for (i = 0; i < MAX_MESH_STEP; ++i) {
	sf->mesh_patterns[i].range = good_quality_mesh_patterns[speed][i].range;
	sf->mesh_patterns[i].interval =
	good_quality_mesh_patterns[speed][i].interval;
	}
	}

	// Slow quant, dct and trellis not worthwhile for first pass
	// so make sure they are always turned off.
	if (oxcf->pass == 1) sf->optimize_coefficients = 0;

	// No recode for 1 pass.
	if (oxcf->pass == 0) {
	sf->recode_loop = DISALLOW_RECODE;
	sf->optimize_coefficients = 0;
	}

	if (sf->mv.subpel_search_method == SUBPEL_TREE) {
	cpi->find_fractional_mv_step = av1_find_best_sub_pixel_tree;
	} else if (sf->mv.subpel_search_method == SUBPEL_TREE_PRUNED) {
	cpi->find_fractional_mv_step = av1_find_best_sub_pixel_tree_pruned;
	} else if (sf->mv.subpel_search_method == SUBPEL_TREE_PRUNED_MORE) {
	cpi->find_fractional_mv_step = av1_find_best_sub_pixel_tree_pruned_more;
	} else if (sf->mv.subpel_search_method == SUBPEL_TREE_PRUNED_EVENMORE) {
	cpi->find_fractional_mv_step = av1_find_best_sub_pixel_tree_pruned_evenmore;
	}

	#if !CONFIG_AOM_QM
	x->optimize = sf->optimize_coefficients == 1 && oxcf->pass != 1;
	#else
	// FIXME: trellis not very efficient for quantisation matrices
	x->optimize = 0;
	#endif

	x->min_partition_size = sf->default_min_partition_size;
	x->max_partition_size = sf->default_max_partition_size;

	if (!cpi->oxcf.frame_periodic_boost) {
	sf->max_delta_qindex = 0;
	}
	}