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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 AV1_ENCODER_GLOBAL_MOTION_H_
#define AV1_ENCODER_GLOBAL_MOTION_H_
#include "aom/aom_integer.h"
#include "aom_scale/yv12config.h"
#include "av1/common/mv.h"
#ifdef __cplusplus
extern "C" {
#endif
#define RANSAC_NUM_MOTIONS 1
void convert_model_to_params(const double *params, WarpedMotionParams *model);
int is_enough_erroradvantage(double erroradv, int params_cost);
// Returns the av1_warp_error between "dst" and the result of applying the
// motion params that result from fine-tuning "wm" to "ref". Note that "wm" is
// modified in place.
int64_t refine_integerized_param(WarpedMotionParams *wm,
TransformationType wmtype,
#if CONFIG_HIGHBITDEPTH
int use_hbd, int bd,
#endif // CONFIG_HIGHBITDEPTH
uint8_t *ref, int r_width, int r_height,
int r_stride, uint8_t *dst, int d_width,
int d_height, int d_stride, int n_refinements);
/*
Computes "num_motions" candidate global motion parameters between two frames.
The array "params_by_motion" should be length 8 * "num_motions". The ordering
of each set of parameters is best described by the homography:
[x' (m2 m3 m0 [x
z . y' = m4 m5 m1 * y
1] m6 m7 1) 1]
where m{i} represents the ith value in any given set of parameters.
"num_inliers" should be length "num_motions", and will be populated with the
number of inlier feature points for each motion. Params for which the
num_inliers entry is 0 should be ignored by the caller.
*/
int compute_global_motion_feature_based(
TransformationType type, YV12_BUFFER_CONFIG *frm, YV12_BUFFER_CONFIG *ref,
#if CONFIG_HIGHBITDEPTH
int bit_depth,
#endif
int *num_inliers_by_motion, double *params_by_motion, int num_motions);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AV1_ENCODER_GLOBAL_MOTION_H_
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