| /* |
| * 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_ |