/*
 * 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"

#ifdef __cplusplus
extern "C" {
#endif

/*
  Computes global motion parameters between two frames. The array
  "params" should be length 9, where the first 2 slots are translation
  parameters in (row, col) order, and the remaining slots correspond
  to values in the transformation matrix of the corresponding motion
  model. They are arranged in "params" such that values on the tx-matrix
  diagonal have odd numbered indices so the folowing matrix:
  A | B
  C | D
  would produce params = [trans row, trans col, B, A, C, D]
*/
int compute_global_motion_feature_based(TransformationType type,
                                        YV12_BUFFER_CONFIG *frm,
                                        YV12_BUFFER_CONFIG *ref,
#if CONFIG_AOM_HIGHBITDEPTH
                                        int bit_depth,
#endif
                                        double *params);
#ifdef __cplusplus
}  // extern "C"
#endif
#endif  // AV1_ENCODER_GLOBAL_MOTION_H_