1 /* 2 * Copyright (C) 2013 Wei Gao <weigao@multicorewareinc.com> 3 * Copyright (C) 2013 Lenny Wang 4 * 5 * This file is part of FFmpeg. 6 * 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. 11 * 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. 16 * 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 20 */ 21 22 #ifndef AVFILTER_DESHAKE_H 23 #define AVFILTER_DESHAKE_H 24 25 #include "config.h" 26 #include "avfilter.h" 27 #include "transform.h" 28 #include "libavutil/pixelutils.h" 29 30 31 enum SearchMethod { 32 EXHAUSTIVE, ///< Search all possible positions 33 SMART_EXHAUSTIVE, ///< Search most possible positions (faster) 34 SEARCH_COUNT 35 }; 36 37 typedef struct IntMotionVector { 38 int x; ///< Horizontal shift 39 int y; ///< Vertical shift 40 } IntMotionVector; 41 42 typedef struct MotionVector { 43 double x; ///< Horizontal shift 44 double y; ///< Vertical shift 45 } MotionVector; 46 47 typedef struct Transform { 48 MotionVector vec; ///< Motion vector 49 double angle; ///< Angle of rotation 50 double zoom; ///< Zoom percentage 51 } Transform; 52 53 #define MAX_R 64 54 55 typedef struct DeshakeContext { 56 const AVClass *class; 57 int counts[2*MAX_R+1][2*MAX_R+1]; /// < Scratch buffer for motion search 58 double *angles; ///< Scratch buffer for block angles 59 unsigned angles_size; 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) 70 FILE *fp; 71 Transform avg; 72 int cw; ///< Crop motion search to this box 73 int ch; 74 int cx; 75 int cy; 76 char *filename; ///< Motion search detailed log filename 77 int opencl; 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); 81 } DeshakeContext; 82 83 #endif /* AVFILTER_DESHAKE_H */ 84