1 /*
2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved.
3 *
4 * This source code is subject to the terms of the BSD 2 Clause License and
5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6 * was not distributed with this source code in the LICENSE file, you can
7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8 * Media Patent License 1.0 was not distributed with this source code in the
9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10 */
11
12 #include <assert.h>
13
14 #include "aom_dsp/flow_estimation/corner_detect.h"
15 #include "aom_dsp/flow_estimation/corner_match.h"
16 #include "aom_dsp/flow_estimation/disflow.h"
17 #include "aom_dsp/flow_estimation/flow_estimation.h"
18 #include "aom_ports/mem.h"
19 #include "aom_scale/yv12config.h"
20
21 // clang-format off
22 const double kIdentityParams[MAX_PARAMDIM] = {
23 0.0, 0.0, 1.0, 0.0, 0.0, 1.0
24 };
25 // clang-format on
26
27 // Compute a global motion model between the given source and ref frames.
28 //
29 // As is standard for video codecs, the resulting model maps from (x, y)
30 // coordinates in `src` to the corresponding points in `ref`, regardless
31 // of the temporal order of the two frames.
32 //
33 // Returns true if global motion estimation succeeded, false if not.
34 // The output models should only be used if this function succeeds.
aom_compute_global_motion(TransformationType type,YV12_BUFFER_CONFIG * src,YV12_BUFFER_CONFIG * ref,int bit_depth,GlobalMotionMethod gm_method,int downsample_level,MotionModel * motion_models,int num_motion_models,bool * mem_alloc_failed)35 bool aom_compute_global_motion(TransformationType type, YV12_BUFFER_CONFIG *src,
36 YV12_BUFFER_CONFIG *ref, int bit_depth,
37 GlobalMotionMethod gm_method,
38 int downsample_level, MotionModel *motion_models,
39 int num_motion_models, bool *mem_alloc_failed) {
40 switch (gm_method) {
41 case GLOBAL_MOTION_METHOD_FEATURE_MATCH:
42 return av1_compute_global_motion_feature_match(
43 type, src, ref, bit_depth, downsample_level, motion_models,
44 num_motion_models, mem_alloc_failed);
45 case GLOBAL_MOTION_METHOD_DISFLOW:
46 return av1_compute_global_motion_disflow(
47 type, src, ref, bit_depth, downsample_level, motion_models,
48 num_motion_models, mem_alloc_failed);
49 default: assert(0 && "Unknown global motion estimation type");
50 }
51 return false;
52 }
53