66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#ifndef AOM_AOM_DSP_FLOW_ESTIMATION_H_
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#define AOM_AOM_DSP_FLOW_ESTIMATION_H_
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#include "aom_ports/mem.h"
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#include "aom_scale/yv12config.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MAX_PARAMDIM 9
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#define MAX_CORNERS 4096
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#define MIN_INLIER_PROB 0.1
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/* clang-format off */
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enum {
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IDENTITY = 0, // identity transformation, 0-parameter
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TRANSLATION = 1, // translational motion 2-parameter
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ROTZOOM = 2, // simplified affine with rotation + zoom only, 4-parameter
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AFFINE = 3, // affine, 6-parameter
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TRANS_TYPES,
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} UENUM1BYTE(TransformationType);
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/* clang-format on */
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// number of parameters used by each transformation in TransformationTypes
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static const int trans_model_params[TRANS_TYPES] = { 0, 2, 4, 6 };
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typedef enum {
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GLOBAL_MOTION_FEATURE_BASED,
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GLOBAL_MOTION_DISFLOW_BASED,
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} GlobalMotionEstimationType;
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typedef struct {
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double params[MAX_PARAMDIM - 1];
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int *inliers;
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int num_inliers;
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} MotionModel;
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int aom_compute_global_motion(TransformationType type,
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unsigned char *src_buffer, int src_width,
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int src_height, int src_stride, int *src_corners,
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int num_src_corners, YV12_BUFFER_CONFIG *ref,
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int bit_depth,
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GlobalMotionEstimationType gm_estimation_type,
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int *num_inliers_by_motion,
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MotionModel *params_by_motion, int num_motions);
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unsigned char *av1_downconvert_frame(YV12_BUFFER_CONFIG *frm, int bit_depth);
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#ifdef __cplusplus
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}
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#endif
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#endif // AOM_AOM_DSP_FLOW_ESTIMATION_H_
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