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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.
*/
#ifndef AOM_AOM_DSP_FLOW_ESTIMATION_CORNER_MATCH_H_
#define AOM_AOM_DSP_FLOW_ESTIMATION_CORNER_MATCH_H_
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <memory.h>
#include "aom_dsp/flow_estimation/corner_detect.h"
#include "aom_dsp/flow_estimation/flow_estimation.h"
#include "aom_scale/yv12config.h"
#ifdef __cplusplus
extern "C" {
#endif
#define MATCH_SZ 16
#define MATCH_SZ_BY2 ((MATCH_SZ - 1) / 2)
#define MATCH_SZ_SQ (MATCH_SZ * MATCH_SZ)
// Minimum threshold for the variance of a patch, in order for it to be
// considered useful for matching.
// This is evaluated against the scaled variance MATCH_SZ_SQ * sigma^2,
// so a setting of 1 * MATCH_SZ_SQ corresponds to an unscaled variance of 1
#define MIN_FEATURE_VARIANCE (1 * MATCH_SZ_SQ)
bool av1_compute_global_motion_feature_match(
TransformationType type, YV12_BUFFER_CONFIG *src, YV12_BUFFER_CONFIG *ref,
int bit_depth, int downsample_level, MotionModel *motion_models,
int num_motion_models, bool *mem_alloc_failed);
#ifdef __cplusplus
}
#endif
#endif // AOM_AOM_DSP_FLOW_ESTIMATION_CORNER_MATCH_H_