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aom/av1/encoder/speed_features.c

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/*
* 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"
#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
};
#if CONFIG_INTRABC
// TODO(aconverse@google.com): These settings are pretty relaxed, tune them for
// each speed setting
static MESH_PATTERN intrabc_mesh_patterns[MAX_MESH_SPEED + 1][MAX_MESH_STEP] = {
{ { 256, 1 }, { 256, 1 }, { 0, 0 }, { 0, 0 } },
{ { 64, 1 }, { 64, 1 }, { 0, 0 }, { 0, 0 } },
{ { 64, 1 }, { 64, 1 }, { 0, 0 }, { 0, 0 } },
{ { 64, 4 }, { 16, 1 }, { 0, 0 }, { 0, 0 } },
{ { 64, 4 }, { 16, 1 }, { 0, 0 }, { 0, 0 } },
{ { 64, 4 }, { 16, 1 }, { 0, 0 }, { 0, 0 } },
};
static uint8_t intrabc_max_mesh_pct[MAX_MESH_SPEED + 1] = { 100, 100, 100,
25, 25, 10 };
#endif
// 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_features_framesize_independent(AV1_COMP *cpi,
SPEED_FEATURES *sf,
int speed) {
AV1_COMMON *const cm = &cpi->common;
const int boosted = frame_is_boosted(cpi);
if (speed >= 1) {
sf->tx_type_search.fast_intra_tx_type_search = 1;
sf->tx_type_search.fast_inter_tx_type_search = 1;
}
if (speed >= 2) {
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 = 1;
sf->mv.subpel_iters_per_step = 1;
sf->mode_skip_start = 10;
sf->adaptive_pred_interp_filter = 1;
sf->recode_loop = ALLOW_RECODE_KFARFGF;
#if CONFIG_TX64X64
sf->intra_y_mode_mask[TX_64X64] = INTRA_DC_H_V;
sf->intra_uv_mode_mask[TX_64X64] = INTRA_DC_H_V;
#endif // CONFIG_TX64X64
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;
sf->tx_type_search.prune_mode = PRUNE_ONE;
// Use transform domain distortion.
// Note var-tx expt always uses pixel domain distortion.
sf->use_transform_domain_distortion = 1;
#if CONFIG_EXT_INTER
sf->disable_wedge_search_var_thresh = 100;
sf->fast_wedge_sign_estimate = 1;
#endif // CONFIG_EXT_INTER
}
if (speed >= 3) {
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;
sf->adaptive_rd_thresh = 2;
#if CONFIG_EXT_TX
sf->tx_type_search.prune_mode = PRUNE_TWO;
#endif
#if CONFIG_GLOBAL_MOTION
sf->gm_search_type = GM_DISABLE_SEARCH;
#endif // CONFIG_GLOBAL_MOTION
}
if (speed >= 4) {
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;
#if CONFIG_TX64X64
sf->intra_y_mode_mask[TX_64X64] = INTRA_DC;
sf->intra_uv_mode_mask[TX_64X64] = INTRA_DC;
#endif // CONFIG_TX64X64
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 >= 5) {
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_fast_coef_updates = ONE_LOOP_REDUCED;
sf->use_fast_coef_costing = 1;
sf->partition_search_breakout_rate_thr = 300;
}
if (speed >= 6) {
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;
}
if (speed >= 7) {
const int is_keyframe = cm->frame_type == KEY_FRAME;
const int frames_since_key = is_keyframe ? 0 : cpi->rc.frames_since_key;
sf->default_max_partition_size = BLOCK_32X32;
sf->default_min_partition_size = BLOCK_8X8;
#if CONFIG_TX64X64
sf->intra_y_mode_mask[TX_64X64] = INTRA_DC;
#endif // CONFIG_TX64X64
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;
#if CONFIG_EXT_PARTITION
sf->inter_mode_mask[BLOCK_64X128] = INTER_NEAREST;
sf->inter_mode_mask[BLOCK_128X64] = INTER_NEAREST;
sf->inter_mode_mask[BLOCK_128X128] = INTER_NEAREST;
#endif // CONFIG_EXT_PARTITION
sf->partition_search_type = REFERENCE_PARTITION;
sf->default_min_partition_size = BLOCK_8X8;
sf->reuse_inter_pred_sby = 1;
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->coeff_prob_appx_step = 4;
sf->mode_search_skip_flags |= FLAG_SKIP_INTRA_DIRMISMATCH;
}
if (speed >= 8) {
sf->mv.search_method = FAST_DIAMOND;
sf->mv.fullpel_search_step_param = 10;
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;
AV1_COMMON *const cm = &cpi->common;
RD_OPT *const rd = &cpi->rd;
int i;
// Limit memory usage for high resolutions
#if CONFIG_EXT_REFS
// TODO(zoeliu): Temporary solution to resolve the insufficient RAM issue for
// ext-refs. Need to work with @yunqingwang to have a more
// effective solution.
if (AOMMIN(cm->width, cm->height) > 720) {
// Turn off the use of upsampled references for HD resolution
sf->use_upsampled_references = 0;
} else if ((AOMMIN(cm->width, cm->height) > 540) &&
(oxcf->profile != PROFILE_0)) {
sf->use_upsampled_references = 0;
}
#else
if (AOMMIN(cm->width, cm->height) > 1080) {
sf->use_upsampled_references = 0;
} else if ((AOMMIN(cm->width, cm->height) > 720) &&
(oxcf->profile != PROFILE_0)) {
sf->use_upsampled_references = 0;
}
#endif // CONFIG_EXT_REFS
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;
}
// 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;
}
}
// This is only used in motion vector unit test.
if (cpi->oxcf.motion_vector_unit_test == 1)
cpi->find_fractional_mv_step = av1_return_max_sub_pixel_mv;
else if (cpi->oxcf.motion_vector_unit_test == 2)
cpi->find_fractional_mv_step = av1_return_min_sub_pixel_mv;
}
void av1_set_speed_features_framesize_independent(AV1_COMP *cpi) {
AV1_COMMON *const cm = &cpi->common;
SPEED_FEATURES *const sf = &cpi->sf;
MACROBLOCK *const x = &cpi->td.mb;
const AV1EncoderConfig *const oxcf = &cpi->oxcf;
int i;
(void)cm;
// 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->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->partition_search_type = SEARCH_PARTITION;
sf->tx_type_search.prune_mode = NO_PRUNE;
sf->tx_type_search.fast_intra_tx_type_search = 0;
sf->tx_type_search.fast_inter_tx_type_search = 0;
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_LARGEST;
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;
#if CONFIG_EXT_INTER
sf->disable_wedge_search_var_thresh = 0;
sf->fast_wedge_sign_estimate = 0;
#endif // CONFIG_EXT_INTER
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_LARGEST;
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;
// 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;
// Set this at the appropriate speed levels
sf->use_transform_domain_distortion = 0;
#if CONFIG_GLOBAL_MOTION
sf->gm_search_type = GM_FULL_SEARCH;
#endif // CONFIG_GLOBAL_MOTION
if (oxcf->mode == GOOD
#if CONFIG_XIPHRC
|| oxcf->pass == 1
#endif
)
set_good_speed_features_framesize_independent(cpi, sf, oxcf->speed);
// sf->partition_search_breakout_dist_thr is set assuming max 64x64
// blocks. Normalise this if the blocks are bigger.
if (MAX_SB_SIZE_LOG2 > 6) {
sf->partition_search_breakout_dist_thr <<= 2 * (MAX_SB_SIZE_LOG2 - 6);
}
cpi->full_search_sad = av1_full_search_sad;
cpi->diamond_search_sad = av1_diamond_search_sad;
sf->allow_exhaustive_searches = 1;
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 << 24);
else
sf->exhaustive_searches_thresh = (1 << 25);
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;
}
#if CONFIG_INTRABC
if ((frame_is_intra_only(cm) && cm->allow_screen_content_tools) &&
(cpi->twopass.fr_content_type == FC_GRAPHICS_ANIMATION ||
cpi->oxcf.content == AOM_CONTENT_SCREEN)) {
for (i = 0; i < MAX_MESH_STEP; ++i) {
sf->mesh_patterns[i].range = intrabc_mesh_patterns[speed][i].range;
sf->mesh_patterns[i].interval = intrabc_mesh_patterns[speed][i].interval;
}
sf->max_exaustive_pct = intrabc_max_mesh_pct[speed];
}
#endif // CONFIG_INTRABC
#if !CONFIG_XIPHRC
// 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;
#endif
// 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;
}
// This is only used in motion vector unit test.
if (cpi->oxcf.motion_vector_unit_test == 1)
cpi->find_fractional_mv_step = av1_return_max_sub_pixel_mv;
else if (cpi->oxcf.motion_vector_unit_test == 2)
cpi->find_fractional_mv_step = av1_return_min_sub_pixel_mv;
}
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