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vf_deshake.c
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1 /*
2  * Copyright (C) 2010 Georg Martius <georg.martius@web.de>
3  * Copyright (C) 2010 Daniel G. Taylor <dan@programmer-art.org>
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 /**
23  * @file
24  * fast deshake / depan video filter
25  *
26  * SAD block-matching motion compensation to fix small changes in
27  * horizontal and/or vertical shift. This filter helps remove camera shake
28  * from hand-holding a camera, bumping a tripod, moving on a vehicle, etc.
29  *
30  * Algorithm:
31  * - For each frame with one previous reference frame
32  * - For each block in the frame
33  * - If contrast > threshold then find likely motion vector
34  * - For all found motion vectors
35  * - Find most common, store as global motion vector
36  * - Find most likely rotation angle
37  * - Transform image along global motion
38  *
39  * TODO:
40  * - Fill frame edges based on previous/next reference frames
41  * - Fill frame edges by stretching image near the edges?
42  * - Can this be done quickly and look decent?
43  *
44  * Dark Shikari links to http://wiki.videolan.org/SoC_x264_2010#GPU_Motion_Estimation_2
45  * for an algorithm similar to what could be used here to get the gmv
46  * It requires only a couple diamond searches + fast downscaling
47  *
48  * Special thanks to Jason Kotenko for his help with the algorithm and my
49  * inability to see simple errors in C code.
50  */
51 
52 #include "avfilter.h"
53 #include "formats.h"
54 #include "internal.h"
55 #include "video.h"
56 #include "libavutil/common.h"
57 #include "libavutil/mem.h"
58 #include "libavutil/opt.h"
59 #include "libavutil/pixdesc.h"
60 
61 #include "deshake.h"
62 #include "deshake_opencl.h"
63 
64 #define CHROMA_WIDTH(link) (-((-(link)->w) >> av_pix_fmt_desc_get((link)->format)->log2_chroma_w))
65 #define CHROMA_HEIGHT(link) (-((-(link)->h) >> av_pix_fmt_desc_get((link)->format)->log2_chroma_h))
66 
67 #define OFFSET(x) offsetof(DeshakeContext, x)
68 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
69 
70 #define MAX_R 64
71 
72 static const AVOption deshake_options[] = {
73  { "x", "set x for the rectangular search area", OFFSET(cx), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
74  { "y", "set y for the rectangular search area", OFFSET(cy), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
75  { "w", "set width for the rectangular search area", OFFSET(cw), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
76  { "h", "set height for the rectangular search area", OFFSET(ch), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
77  { "rx", "set x for the rectangular search area", OFFSET(rx), AV_OPT_TYPE_INT, {.i64=16}, 0, MAX_R, .flags = FLAGS },
78  { "ry", "set y for the rectangular search area", OFFSET(ry), AV_OPT_TYPE_INT, {.i64=16}, 0, MAX_R, .flags = FLAGS },
79  { "edge", "set edge mode", OFFSET(edge), AV_OPT_TYPE_INT, {.i64=FILL_MIRROR}, FILL_BLANK, FILL_COUNT-1, FLAGS, "edge"},
80  { "blank", "fill zeroes at blank locations", 0, AV_OPT_TYPE_CONST, {.i64=FILL_BLANK}, INT_MIN, INT_MAX, FLAGS, "edge" },
81  { "original", "original image at blank locations", 0, AV_OPT_TYPE_CONST, {.i64=FILL_ORIGINAL}, INT_MIN, INT_MAX, FLAGS, "edge" },
82  { "clamp", "extruded edge value at blank locations", 0, AV_OPT_TYPE_CONST, {.i64=FILL_CLAMP}, INT_MIN, INT_MAX, FLAGS, "edge" },
83  { "mirror", "mirrored edge at blank locations", 0, AV_OPT_TYPE_CONST, {.i64=FILL_MIRROR}, INT_MIN, INT_MAX, FLAGS, "edge" },
84  { "blocksize", "set motion search blocksize", OFFSET(blocksize), AV_OPT_TYPE_INT, {.i64=8}, 4, 128, .flags = FLAGS },
85  { "contrast", "set contrast threshold for blocks", OFFSET(contrast), AV_OPT_TYPE_INT, {.i64=125}, 1, 255, .flags = FLAGS },
86  { "search", "set search strategy", OFFSET(search), AV_OPT_TYPE_INT, {.i64=EXHAUSTIVE}, EXHAUSTIVE, SEARCH_COUNT-1, FLAGS, "smode" },
87  { "exhaustive", "exhaustive search", 0, AV_OPT_TYPE_CONST, {.i64=EXHAUSTIVE}, INT_MIN, INT_MAX, FLAGS, "smode" },
88  { "less", "less exhaustive search", 0, AV_OPT_TYPE_CONST, {.i64=SMART_EXHAUSTIVE}, INT_MIN, INT_MAX, FLAGS, "smode" },
89  { "filename", "set motion search detailed log file name", OFFSET(filename), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
90  { "opencl", "use OpenCL filtering capabilities", OFFSET(opencl), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, .flags = FLAGS },
91  { NULL }
92 };
93 
94 AVFILTER_DEFINE_CLASS(deshake);
95 
96 static int cmp(const double *a, const double *b)
97 {
98  return *a < *b ? -1 : ( *a > *b ? 1 : 0 );
99 }
100 
101 /**
102  * Cleaned mean (cuts off 20% of values to remove outliers and then averages)
103  */
104 static double clean_mean(double *values, int count)
105 {
106  double mean = 0;
107  int cut = count / 5;
108  int x;
109 
110  qsort(values, count, sizeof(double), (void*)cmp);
111 
112  for (x = cut; x < count - cut; x++) {
113  mean += values[x];
114  }
115 
116  return mean / (count - cut * 2);
117 }
118 
119 /**
120  * Find the most likely shift in motion between two frames for a given
121  * macroblock. Test each block against several shifts given by the rx
122  * and ry attributes. Searches using a simple matrix of those shifts and
123  * chooses the most likely shift by the smallest difference in blocks.
124  */
125 static void find_block_motion(DeshakeContext *deshake, uint8_t *src1,
126  uint8_t *src2, int cx, int cy, int stride,
128 {
129  int x, y;
130  int diff;
131  int smallest = INT_MAX;
132  int tmp, tmp2;
133 
134  #define CMP(i, j) deshake->sad(src1 + cy * stride + cx, stride,\
135  src2 + (j) * stride + (i), stride)
136 
137  if (deshake->search == EXHAUSTIVE) {
138  // Compare every possible position - this is sloooow!
139  for (y = -deshake->ry; y <= deshake->ry; y++) {
140  for (x = -deshake->rx; x <= deshake->rx; x++) {
141  diff = CMP(cx - x, cy - y);
142  if (diff < smallest) {
143  smallest = diff;
144  mv->x = x;
145  mv->y = y;
146  }
147  }
148  }
149  } else if (deshake->search == SMART_EXHAUSTIVE) {
150  // Compare every other possible position and find the best match
151  for (y = -deshake->ry + 1; y < deshake->ry; y += 2) {
152  for (x = -deshake->rx + 1; x < deshake->rx; x += 2) {
153  diff = CMP(cx - x, cy - y);
154  if (diff < smallest) {
155  smallest = diff;
156  mv->x = x;
157  mv->y = y;
158  }
159  }
160  }
161 
162  // Hone in on the specific best match around the match we found above
163  tmp = mv->x;
164  tmp2 = mv->y;
165 
166  for (y = tmp2 - 1; y <= tmp2 + 1; y++) {
167  for (x = tmp - 1; x <= tmp + 1; x++) {
168  if (x == tmp && y == tmp2)
169  continue;
170 
171  diff = CMP(cx - x, cy - y);
172  if (diff < smallest) {
173  smallest = diff;
174  mv->x = x;
175  mv->y = y;
176  }
177  }
178  }
179  }
180 
181  if (smallest > 512) {
182  mv->x = -1;
183  mv->y = -1;
184  }
185  emms_c();
186  //av_log(NULL, AV_LOG_ERROR, "%d\n", smallest);
187  //av_log(NULL, AV_LOG_ERROR, "Final: (%d, %d) = %d x %d\n", cx, cy, mv->x, mv->y);
188 }
189 
190 /**
191  * Find the contrast of a given block. When searching for global motion we
192  * really only care about the high contrast blocks, so using this method we
193  * can actually skip blocks we don't care much about.
194  */
195 static int block_contrast(uint8_t *src, int x, int y, int stride, int blocksize)
196 {
197  int highest = 0;
198  int lowest = 255;
199  int i, j, pos;
200 
201  for (i = 0; i <= blocksize * 2; i++) {
202  // We use a width of 16 here to match the sad function
203  for (j = 0; j <= 15; j++) {
204  pos = (y - i) * stride + (x - j);
205  if (src[pos] < lowest)
206  lowest = src[pos];
207  else if (src[pos] > highest) {
208  highest = src[pos];
209  }
210  }
211  }
212 
213  return highest - lowest;
214 }
215 
216 /**
217  * Find the rotation for a given block.
218  */
219 static double block_angle(int x, int y, int cx, int cy, IntMotionVector *shift)
220 {
221  double a1, a2, diff;
222 
223  a1 = atan2(y - cy, x - cx);
224  a2 = atan2(y - cy + shift->y, x - cx + shift->x);
225 
226  diff = a2 - a1;
227 
228  return (diff > M_PI) ? diff - 2 * M_PI :
229  (diff < -M_PI) ? diff + 2 * M_PI :
230  diff;
231 }
232 
233 /**
234  * Find the estimated global motion for a scene given the most likely shift
235  * for each block in the frame. The global motion is estimated to be the
236  * same as the motion from most blocks in the frame, so if most blocks
237  * move one pixel to the right and two pixels down, this would yield a
238  * motion vector (1, -2).
239  */
240 static void find_motion(DeshakeContext *deshake, uint8_t *src1, uint8_t *src2,
241  int width, int height, int stride, Transform *t)
242 {
243  int x, y;
244  IntMotionVector mv = {0, 0};
245  int counts[2*MAX_R+1][2*MAX_R+1];
246  int count_max_value = 0;
247  int contrast;
248 
249  int pos;
250  double *angles = av_malloc_array(width * height / (16 * deshake->blocksize), sizeof(*angles));
251  int center_x = 0, center_y = 0;
252  double p_x, p_y;
253 
254  // Reset counts to zero
255  for (x = 0; x < deshake->rx * 2 + 1; x++) {
256  for (y = 0; y < deshake->ry * 2 + 1; y++) {
257  counts[x][y] = 0;
258  }
259  }
260 
261  pos = 0;
262  // Find motion for every block and store the motion vector in the counts
263  for (y = deshake->ry; y < height - deshake->ry - (deshake->blocksize * 2); y += deshake->blocksize * 2) {
264  // We use a width of 16 here to match the sad function
265  for (x = deshake->rx; x < width - deshake->rx - 16; x += 16) {
266  // If the contrast is too low, just skip this block as it probably
267  // won't be very useful to us.
268  contrast = block_contrast(src2, x, y, stride, deshake->blocksize);
269  if (contrast > deshake->contrast) {
270  //av_log(NULL, AV_LOG_ERROR, "%d\n", contrast);
271  find_block_motion(deshake, src1, src2, x, y, stride, &mv);
272  if (mv.x != -1 && mv.y != -1) {
273  counts[mv.x + deshake->rx][mv.y + deshake->ry] += 1;
274  if (x > deshake->rx && y > deshake->ry)
275  angles[pos++] = block_angle(x, y, 0, 0, &mv);
276 
277  center_x += mv.x;
278  center_y += mv.y;
279  }
280  }
281  }
282  }
283 
284  if (pos) {
285  center_x /= pos;
286  center_y /= pos;
287  t->angle = clean_mean(angles, pos);
288  if (t->angle < 0.001)
289  t->angle = 0;
290  } else {
291  t->angle = 0;
292  }
293 
294  // Find the most common motion vector in the frame and use it as the gmv
295  for (y = deshake->ry * 2; y >= 0; y--) {
296  for (x = 0; x < deshake->rx * 2 + 1; x++) {
297  //av_log(NULL, AV_LOG_ERROR, "%5d ", counts[x][y]);
298  if (counts[x][y] > count_max_value) {
299  t->vector.x = x - deshake->rx;
300  t->vector.y = y - deshake->ry;
301  count_max_value = counts[x][y];
302  }
303  }
304  //av_log(NULL, AV_LOG_ERROR, "\n");
305  }
306 
307  p_x = (center_x - width / 2.0);
308  p_y = (center_y - height / 2.0);
309  t->vector.x += (cos(t->angle)-1)*p_x - sin(t->angle)*p_y;
310  t->vector.y += sin(t->angle)*p_x + (cos(t->angle)-1)*p_y;
311 
312  // Clamp max shift & rotation?
313  t->vector.x = av_clipf(t->vector.x, -deshake->rx * 2, deshake->rx * 2);
314  t->vector.y = av_clipf(t->vector.y, -deshake->ry * 2, deshake->ry * 2);
315  t->angle = av_clipf(t->angle, -0.1, 0.1);
316 
317  //av_log(NULL, AV_LOG_ERROR, "%d x %d\n", avg->x, avg->y);
318  av_free(angles);
319 }
320 
322  int width, int height, int cw, int ch,
323  const float *matrix_y, const float *matrix_uv,
325  enum FillMethod fill, AVFrame *in, AVFrame *out)
326 {
327  int i = 0, ret = 0;
328  const float *matrixs[3];
329  int plane_w[3], plane_h[3];
330  matrixs[0] = matrix_y;
331  matrixs[1] = matrixs[2] = matrix_uv;
332  plane_w[0] = width;
333  plane_w[1] = plane_w[2] = cw;
334  plane_h[0] = height;
335  plane_h[1] = plane_h[2] = ch;
336 
337  for (i = 0; i < 3; i++) {
338  // Transform the luma and chroma planes
339  ret = avfilter_transform(in->data[i], out->data[i], in->linesize[i], out->linesize[i],
340  plane_w[i], plane_h[i], matrixs[i], interpolate, fill);
341  if (ret < 0)
342  return ret;
343  }
344  return ret;
345 }
346 
347 static av_cold int init(AVFilterContext *ctx)
348 {
349  int ret;
350  DeshakeContext *deshake = ctx->priv;
351 
352  deshake->sad = av_pixelutils_get_sad_fn(4, 4, 1, deshake); // 16x16, 2nd source unaligned
353  if (!deshake->sad)
354  return AVERROR(EINVAL);
355 
356  deshake->refcount = 20; // XXX: add to options?
357  deshake->blocksize /= 2;
358  deshake->blocksize = av_clip(deshake->blocksize, 4, 128);
359 
360  if (deshake->rx % 16) {
361  av_log(ctx, AV_LOG_ERROR, "rx must be a multiple of 16\n");
362  return AVERROR_PATCHWELCOME;
363  }
364 
365  if (deshake->filename)
366  deshake->fp = fopen(deshake->filename, "w");
367  if (deshake->fp)
368  fwrite("Ori x, Avg x, Fin x, Ori y, Avg y, Fin y, Ori angle, Avg angle, Fin angle, Ori zoom, Avg zoom, Fin zoom\n", sizeof(char), 104, deshake->fp);
369 
370  // Quadword align left edge of box for MMX code, adjust width if necessary
371  // to keep right margin
372  if (deshake->cx > 0) {
373  deshake->cw += deshake->cx - (deshake->cx & ~15);
374  deshake->cx &= ~15;
375  }
376  deshake->transform = deshake_transform_c;
377  if (!CONFIG_OPENCL && deshake->opencl) {
378  av_log(ctx, AV_LOG_ERROR, "OpenCL support was not enabled in this build, cannot be selected\n");
379  return AVERROR(EINVAL);
380  }
381 
382  if (CONFIG_OPENCL && deshake->opencl) {
383  deshake->transform = ff_opencl_transform;
384  ret = ff_opencl_deshake_init(ctx);
385  if (ret < 0)
386  return ret;
387  }
388  av_log(ctx, AV_LOG_VERBOSE, "cx: %d, cy: %d, cw: %d, ch: %d, rx: %d, ry: %d, edge: %d blocksize: %d contrast: %d search: %d\n",
389  deshake->cx, deshake->cy, deshake->cw, deshake->ch,
390  deshake->rx, deshake->ry, deshake->edge, deshake->blocksize * 2, deshake->contrast, deshake->search);
391 
392  return 0;
393 }
394 
396 {
397  static const enum AVPixelFormat pix_fmts[] = {
401  };
402 
404 
405  return 0;
406 }
407 
408 static int config_props(AVFilterLink *link)
409 {
410  DeshakeContext *deshake = link->dst->priv;
411 
412  deshake->ref = NULL;
413  deshake->last.vector.x = 0;
414  deshake->last.vector.y = 0;
415  deshake->last.angle = 0;
416  deshake->last.zoom = 0;
417 
418  return 0;
419 }
420 
421 static av_cold void uninit(AVFilterContext *ctx)
422 {
423  DeshakeContext *deshake = ctx->priv;
424  if (CONFIG_OPENCL && deshake->opencl) {
426  }
427  av_frame_free(&deshake->ref);
428  if (deshake->fp)
429  fclose(deshake->fp);
430 }
431 
432 static int filter_frame(AVFilterLink *link, AVFrame *in)
433 {
434  DeshakeContext *deshake = link->dst->priv;
435  AVFilterLink *outlink = link->dst->outputs[0];
436  AVFrame *out;
437  Transform t = {{0},0}, orig = {{0},0};
438  float matrix_y[9], matrix_uv[9];
439  float alpha = 2.0 / deshake->refcount;
440  char tmp[256];
441  int ret = 0;
442 
443  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
444  if (!out) {
445  av_frame_free(&in);
446  return AVERROR(ENOMEM);
447  }
448  av_frame_copy_props(out, in);
449 
450  if (CONFIG_OPENCL && deshake->opencl) {
451  ret = ff_opencl_deshake_process_inout_buf(link->dst,in, out);
452  if (ret < 0)
453  return ret;
454  }
455 
456  if (deshake->cx < 0 || deshake->cy < 0 || deshake->cw < 0 || deshake->ch < 0) {
457  // Find the most likely global motion for the current frame
458  find_motion(deshake, (deshake->ref == NULL) ? in->data[0] : deshake->ref->data[0], in->data[0], link->w, link->h, in->linesize[0], &t);
459  } else {
460  uint8_t *src1 = (deshake->ref == NULL) ? in->data[0] : deshake->ref->data[0];
461  uint8_t *src2 = in->data[0];
462 
463  deshake->cx = FFMIN(deshake->cx, link->w);
464  deshake->cy = FFMIN(deshake->cy, link->h);
465 
466  if ((unsigned)deshake->cx + (unsigned)deshake->cw > link->w) deshake->cw = link->w - deshake->cx;
467  if ((unsigned)deshake->cy + (unsigned)deshake->ch > link->h) deshake->ch = link->h - deshake->cy;
468 
469  // Quadword align right margin
470  deshake->cw &= ~15;
471 
472  src1 += deshake->cy * in->linesize[0] + deshake->cx;
473  src2 += deshake->cy * in->linesize[0] + deshake->cx;
474 
475  find_motion(deshake, src1, src2, deshake->cw, deshake->ch, in->linesize[0], &t);
476  }
477 
478 
479  // Copy transform so we can output it later to compare to the smoothed value
480  orig.vector.x = t.vector.x;
481  orig.vector.y = t.vector.y;
482  orig.angle = t.angle;
483  orig.zoom = t.zoom;
484 
485  // Generate a one-sided moving exponential average
486  deshake->avg.vector.x = alpha * t.vector.x + (1.0 - alpha) * deshake->avg.vector.x;
487  deshake->avg.vector.y = alpha * t.vector.y + (1.0 - alpha) * deshake->avg.vector.y;
488  deshake->avg.angle = alpha * t.angle + (1.0 - alpha) * deshake->avg.angle;
489  deshake->avg.zoom = alpha * t.zoom + (1.0 - alpha) * deshake->avg.zoom;
490 
491  // Remove the average from the current motion to detect the motion that
492  // is not on purpose, just as jitter from bumping the camera
493  t.vector.x -= deshake->avg.vector.x;
494  t.vector.y -= deshake->avg.vector.y;
495  t.angle -= deshake->avg.angle;
496  t.zoom -= deshake->avg.zoom;
497 
498  // Invert the motion to undo it
499  t.vector.x *= -1;
500  t.vector.y *= -1;
501  t.angle *= -1;
502 
503  // Write statistics to file
504  if (deshake->fp) {
505  snprintf(tmp, 256, "%f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f\n", orig.vector.x, deshake->avg.vector.x, t.vector.x, orig.vector.y, deshake->avg.vector.y, t.vector.y, orig.angle, deshake->avg.angle, t.angle, orig.zoom, deshake->avg.zoom, t.zoom);
506  fwrite(tmp, sizeof(char), strlen(tmp), deshake->fp);
507  }
508 
509  // Turn relative current frame motion into absolute by adding it to the
510  // last absolute motion
511  t.vector.x += deshake->last.vector.x;
512  t.vector.y += deshake->last.vector.y;
513  t.angle += deshake->last.angle;
514  t.zoom += deshake->last.zoom;
515 
516  // Shrink motion by 10% to keep things centered in the camera frame
517  t.vector.x *= 0.9;
518  t.vector.y *= 0.9;
519  t.angle *= 0.9;
520 
521  // Store the last absolute motion information
522  deshake->last.vector.x = t.vector.x;
523  deshake->last.vector.y = t.vector.y;
524  deshake->last.angle = t.angle;
525  deshake->last.zoom = t.zoom;
526 
527  // Generate a luma transformation matrix
528  avfilter_get_matrix(t.vector.x, t.vector.y, t.angle, 1.0 + t.zoom / 100.0, matrix_y);
529  // Generate a chroma transformation matrix
530  avfilter_get_matrix(t.vector.x / (link->w / CHROMA_WIDTH(link)), t.vector.y / (link->h / CHROMA_HEIGHT(link)), t.angle, 1.0 + t.zoom / 100.0, matrix_uv);
531  // Transform the luma and chroma planes
532  ret = deshake->transform(link->dst, link->w, link->h, CHROMA_WIDTH(link), CHROMA_HEIGHT(link),
533  matrix_y, matrix_uv, INTERPOLATE_BILINEAR, deshake->edge, in, out);
534 
535  // Cleanup the old reference frame
536  av_frame_free(&deshake->ref);
537 
538  if (ret < 0)
539  return ret;
540 
541  // Store the current frame as the reference frame for calculating the
542  // motion of the next frame
543  deshake->ref = in;
544 
545  return ff_filter_frame(outlink, out);
546 }
547 
548 static const AVFilterPad deshake_inputs[] = {
549  {
550  .name = "default",
551  .type = AVMEDIA_TYPE_VIDEO,
552  .filter_frame = filter_frame,
553  .config_props = config_props,
554  },
555  { NULL }
556 };
557 
558 static const AVFilterPad deshake_outputs[] = {
559  {
560  .name = "default",
561  .type = AVMEDIA_TYPE_VIDEO,
562  },
563  { NULL }
564 };
565 
567  .name = "deshake",
568  .description = NULL_IF_CONFIG_SMALL("Stabilize shaky video."),
569  .priv_size = sizeof(DeshakeContext),
570  .init = init,
571  .uninit = uninit,
573  .inputs = deshake_inputs,
574  .outputs = deshake_outputs,
575  .priv_class = &deshake_class,
576 };