blob: ab9d328dcdae721cb4b6be145d909dc3c1bf4d99 [file] [log] [blame]
/*
* 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_H_
#define AOM_AOM_DSP_FLOW_ESTIMATION_H_
#include "aom_ports/mem.h"
#include "aom_scale/yv12config.h"
#ifdef __cplusplus
extern "C" {
#endif
#define MAX_PARAMDIM 9
#define MAX_CORNERS 4096
#define MIN_INLIER_PROB 0.1
/* clang-format off */
enum {
IDENTITY = 0, // identity transformation, 0-parameter
TRANSLATION = 1, // translational motion 2-parameter
ROTZOOM = 2, // simplified affine with rotation + zoom only, 4-parameter
AFFINE = 3, // affine, 6-parameter
TRANS_TYPES,
} UENUM1BYTE(TransformationType);
/* clang-format on */
// number of parameters used by each transformation in TransformationTypes
static const int trans_model_params[TRANS_TYPES] = { 0, 2, 4, 6 };
typedef enum {
GLOBAL_MOTION_FEATURE_BASED,
GLOBAL_MOTION_DISFLOW_BASED,
} GlobalMotionEstimationType;
typedef struct {
double params[MAX_PARAMDIM - 1];
int *inliers;
int num_inliers;
} MotionModel;
int aom_compute_global_motion(TransformationType type,
unsigned char *src_buffer, int src_width,
int src_height, int src_stride, int *src_corners,
int num_src_corners, YV12_BUFFER_CONFIG *ref,
int bit_depth,
GlobalMotionEstimationType gm_estimation_type,
int *num_inliers_by_motion,
MotionModel *params_by_motion, int num_motions);
unsigned char *av1_downconvert_frame(YV12_BUFFER_CONFIG *frm, int bit_depth);
#ifdef __cplusplus
}
#endif
#endif // AOM_AOM_DSP_FLOW_ESTIMATION_H_