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/*
* Copyright (C) 2013 Wei Gao <weigao@multicorewareinc.com>
* Copyright (C) 2013 Lenny Wang
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVFILTER_DESHAKE_H
#define AVFILTER_DESHAKE_H
#include "config.h"
#include "avfilter.h"
#include "transform.h"
#include "libavutil/pixelutils.h"
enum SearchMethod {
EXHAUSTIVE, ///< Search all possible positions
SMART_EXHAUSTIVE, ///< Search most possible positions (faster)
SEARCH_COUNT
};
typedef struct IntMotionVector {
int x; ///< Horizontal shift
int y; ///< Vertical shift
} IntMotionVector;
typedef struct MotionVector {
double x; ///< Horizontal shift
double y; ///< Vertical shift
} MotionVector;
typedef struct Transform {
MotionVector vec; ///< Motion vector
double angle; ///< Angle of rotation
double zoom; ///< Zoom percentage
} Transform;
#define MAX_R 64
typedef struct DeshakeContext {
const AVClass *class;
int counts[2*MAX_R+1][2*MAX_R+1]; /// < Scratch buffer for motion search
double *angles; ///< Scratch buffer for block angles
unsigned angles_size;
AVFrame *ref; ///< Previous frame
int rx; ///< Maximum horizontal shift
int ry; ///< Maximum vertical shift
int edge; ///< Edge fill method
int blocksize; ///< Size of blocks to compare
int contrast; ///< Contrast threshold
int search; ///< Motion search method
av_pixelutils_sad_fn sad; ///< Sum of the absolute difference function
Transform last; ///< Transform from last frame
int refcount; ///< Number of reference frames (defines averaging window)
FILE *fp;
Transform avg;
int cw; ///< Crop motion search to this box
int ch;
int cx;
int cy;
char *filename; ///< Motion search detailed log filename
int opencl;
int (* transform)(AVFilterContext *ctx, int width, int height, int cw, int ch,
const float *matrix_y, const float *matrix_uv, enum InterpolateMethod interpolate,
enum FillMethod fill, AVFrame *in, AVFrame *out);
} DeshakeContext;
#endif /* AVFILTER_DESHAKE_H */
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