c4bcb50635
This allows for a clean subtraction of 1 along the transform matrix diagonal and also makes the order of the parameter list a little more intuitive. Change-Id: I6a5d754af41b8d1292f241f9b21473160517d24f
39 lines
1.4 KiB
C
39 lines
1.4 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef AV1_ENCODER_GLOBAL_MOTION_H_
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#define AV1_ENCODER_GLOBAL_MOTION_H_
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#include "aom/aom_integer.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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Computes global motion parameters between two frames. The array
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"params" should be length 9, where the first 2 slots are translation
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parameters in (row, col) order, and the remaining slots correspond
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to values in the transformation matrix of the corresponding motion
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model. They are arranged in "params" such that values on the tx-matrix
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diagonal have odd numbered indices so the folowing matrix:
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A | B
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C | D
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would produce params = [trans row, trans col, B, A, C, D]
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*/
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int compute_global_motion_feature_based(TransformationType type,
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YV12_BUFFER_CONFIG *frm,
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YV12_BUFFER_CONFIG *ref,
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double *params);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // AV1_ENCODER_GLOBAL_MOTION_H_
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