Source code
Revision control
Copy as Markdown
Other Tools
/*
* Copyright (c) 2020, 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_MOTION_SEARCH_H_
#define AOM_AV1_ENCODER_MOTION_SEARCH_H_
#include "av1/encoder/encoder.h"
#ifdef __cplusplus
extern "C" {
#endif
#define NUM_JOINT_ME_REFINE_ITER 2
#define REDUCED_JOINT_ME_REFINE_ITER 1
// TODO(any): rename this struct to something else. There is already another
// struct called inter_modes_info, which makes this terribly confusing.
typedef struct {
int drl_cost;
int_mv full_search_mv;
int full_mv_rate;
int full_mv_bestsme;
int skip;
} inter_mode_info;
struct HandleInterModeArgs;
void av1_single_motion_search(const AV1_COMP *const cpi, MACROBLOCK *x,
BLOCK_SIZE bsize, int ref_idx, int *rate_mv,
int search_range, inter_mode_info *mode_info,
int_mv *best_mv,
struct HandleInterModeArgs *const args);
int av1_joint_motion_search(const AV1_COMP *cpi, MACROBLOCK *x,
BLOCK_SIZE bsize, int_mv *cur_mv,
const uint8_t *mask, int mask_stride, int *rate_mv,
int allow_second_mv, int joint_me_num_refine_iter);
int av1_interinter_compound_motion_search(const AV1_COMP *const cpi,
MACROBLOCK *x,
const int_mv *const cur_mv,
const BLOCK_SIZE bsize,
const PREDICTION_MODE this_mode);
int av1_compound_single_motion_search(const AV1_COMP *cpi, MACROBLOCK *x,
BLOCK_SIZE bsize, MV *this_mv,
const uint8_t *second_pred,
const uint8_t *mask, int mask_stride,
int *rate_mv, int ref_idx);
// Performs a motion search in SIMPLE_TRANSLATION mode using reference frame
// ref and calculates the sse and var of the residue. Note that this sets the
// offset of mbmi, so we will need to reset it after calling this function.
int_mv av1_simple_motion_search_sse_var(struct AV1_COMP *cpi, MACROBLOCK *x,
int mi_row, int mi_col,
BLOCK_SIZE bsize, int ref,
const FULLPEL_MV start_mv,
int num_planes, int use_subpixel,
unsigned int *sse, unsigned int *var);
static inline const search_site_config *av1_get_search_site_config(
const AV1_COMP *cpi, MACROBLOCK *x, SEARCH_METHODS search_method) {
const int ref_stride = x->e_mbd.plane[0].pre[0].stride;
// AV1_COMP::mv_search_params.search_site_config is a compressor level cache
// that's shared by multiple threads. In most cases where all frames have the
// same resolution, the cache contains the search site config that we need.
const MotionVectorSearchParams *mv_search_params = &cpi->mv_search_params;
if (ref_stride == mv_search_params->search_site_cfg[SS_CFG_SRC]->stride) {
return mv_search_params->search_site_cfg[SS_CFG_SRC];
} else if (ref_stride ==
mv_search_params->search_site_cfg[SS_CFG_LOOKAHEAD]->stride) {
return mv_search_params->search_site_cfg[SS_CFG_LOOKAHEAD];
}
// If the cache does not contain the correct stride, then we will need to rely
// on the thread level config MACROBLOCK::search_site_cfg_buf. If even the
// thread level config doesn't match, then we need to update it.
search_method = search_method_lookup[search_method];
assert(search_method_lookup[search_method] == search_method &&
"The search_method_lookup table should be idempotent.");
if (ref_stride != x->search_site_cfg_buf[search_method].stride) {
av1_refresh_search_site_config(x->search_site_cfg_buf, search_method,
ref_stride);
}
return x->search_site_cfg_buf;
}
static inline SEARCH_METHODS av1_get_faster_search_method(
SEARCH_METHODS search_method) {
// Note on search method's accuracy:
// 1. NSTEP
// 2. DIAMOND
// 3. BIGDIA \approx SQUARE
// 4. HEX.
// 5. FAST_HEX \approx FAST_DIAMOND
switch (search_method) {
case NSTEP: return DIAMOND;
case NSTEP_8PT: return DIAMOND;
case DIAMOND: return BIGDIA;
case CLAMPED_DIAMOND: return BIGDIA;
case BIGDIA: return HEX;
case SQUARE: return HEX;
case HEX: return FAST_HEX;
case FAST_HEX: return FAST_HEX;
case FAST_DIAMOND: return VFAST_DIAMOND;
case FAST_BIGDIA: return FAST_BIGDIA;
case VFAST_DIAMOND: return VFAST_DIAMOND;
default: assert(0 && "Invalid search method!"); return DIAMOND;
}
}
static inline SEARCH_METHODS av1_get_default_mv_search_method(
const MACROBLOCK *x, const MV_SPEED_FEATURES *mv_sf, BLOCK_SIZE bsize) {
SEARCH_METHODS search_method = mv_sf->search_method;
const int sf_blk_search_method = mv_sf->use_bsize_dependent_search_method;
const int min_dim = AOMMIN(block_size_wide[bsize], block_size_high[bsize]);
const int qband = x->qindex >> (QINDEX_BITS - 2);
const bool use_faster_search_method =
(sf_blk_search_method == 1 && min_dim >= 32) ||
(sf_blk_search_method >= 2 && min_dim >= 16 &&
x->content_state_sb.source_sad_nonrd <= kMedSad && qband < 3);
if (use_faster_search_method) {
search_method = av1_get_faster_search_method(search_method);
}
return search_method;
}
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AOM_AV1_ENCODER_MOTION_SEARCH_H_