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Diffstat (limited to '')
-rw-r--r-- | third_party/aom/aom_dsp/flow_estimation/flow_estimation.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/flow_estimation/flow_estimation.c b/third_party/aom/aom_dsp/flow_estimation/flow_estimation.c new file mode 100644 index 0000000000..0f47f86f55 --- /dev/null +++ b/third_party/aom/aom_dsp/flow_estimation/flow_estimation.c @@ -0,0 +1,60 @@ +/* + * 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. + */ + +#include <assert.h> + +#include "aom_dsp/flow_estimation/corner_detect.h" +#include "aom_dsp/flow_estimation/corner_match.h" +#include "aom_dsp/flow_estimation/disflow.h" +#include "aom_dsp/flow_estimation/flow_estimation.h" +#include "aom_ports/mem.h" +#include "aom_scale/yv12config.h" + +// For each global motion method, how many pyramid levels should we allocate? +// Note that this is a maximum, and fewer levels will be allocated if the frame +// is not large enough to need all of the specified levels +const int global_motion_pyr_levels[GLOBAL_MOTION_METHODS] = { + 1, // GLOBAL_MOTION_METHOD_FEATURE_MATCH + 16, // GLOBAL_MOTION_METHOD_DISFLOW +}; + +// clang-format off +const double kIdentityParams[MAX_PARAMDIM] = { + 0.0, 0.0, 1.0, 0.0, 0.0, 1.0 +}; +// clang-format on + +// Compute a global motion model between the given source and ref frames. +// +// As is standard for video codecs, the resulting model maps from (x, y) +// coordinates in `src` to the corresponding points in `ref`, regardless +// of the temporal order of the two frames. +// +// Returns true if global motion estimation succeeded, false if not. +// The output models should only be used if this function succeeds. +bool aom_compute_global_motion(TransformationType type, YV12_BUFFER_CONFIG *src, + YV12_BUFFER_CONFIG *ref, int bit_depth, + GlobalMotionMethod gm_method, + MotionModel *motion_models, + int num_motion_models, bool *mem_alloc_failed) { + switch (gm_method) { + case GLOBAL_MOTION_METHOD_FEATURE_MATCH: + return av1_compute_global_motion_feature_match( + type, src, ref, bit_depth, motion_models, num_motion_models, + mem_alloc_failed); + case GLOBAL_MOTION_METHOD_DISFLOW: + return av1_compute_global_motion_disflow(type, src, ref, bit_depth, + motion_models, num_motion_models, + mem_alloc_failed); + default: assert(0 && "Unknown global motion estimation type"); + } + return false; +} |