2 * Copyright (C) 2013 Wei Gao <weigao@multicorewareinc.com>
3 * Copyright (C) 2013 Lenny Wang
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #ifndef AVFILTER_DESHAKE_H
23 #define AVFILTER_DESHAKE_H
27 #include "transform.h"
28 #include "libavutil/pixelutils.h"
32 EXHAUSTIVE, ///< Search all possible positions
33 SMART_EXHAUSTIVE, ///< Search most possible positions (faster)
37 typedef struct IntMotionVector {
38 int x; ///< Horizontal shift
39 int y; ///< Vertical shift
42 typedef struct MotionVector {
43 double x; ///< Horizontal shift
44 double y; ///< Vertical shift
47 typedef struct Transform {
48 MotionVector vec; ///< Motion vector
49 double angle; ///< Angle of rotation
50 double zoom; ///< Zoom percentage
55 typedef struct DeshakeContext {
57 int counts[2*MAX_R+1][2*MAX_R+1]; /// < Scratch buffer for motion search
58 double *angles; ///< Scratch buffer for block angles
60 AVFrame *ref; ///< Previous frame
61 int rx; ///< Maximum horizontal shift
62 int ry; ///< Maximum vertical shift
63 int edge; ///< Edge fill method
64 int blocksize; ///< Size of blocks to compare
65 int contrast; ///< Contrast threshold
66 int search; ///< Motion search method
67 av_pixelutils_sad_fn sad; ///< Sum of the absolute difference function
68 Transform last; ///< Transform from last frame
69 int refcount; ///< Number of reference frames (defines averaging window)
72 int cw; ///< Crop motion search to this box
76 char *filename; ///< Motion search detailed log filename
78 int (* transform)(AVFilterContext *ctx, int width, int height, int cw, int ch,
79 const float *matrix_y, const float *matrix_uv, enum InterpolateMethod interpolate,
80 enum FillMethod fill, AVFrame *in, AVFrame *out);
83 #endif /* AVFILTER_DESHAKE_H */