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vf_vidstabtransform.c
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1 /*
2  * Copyright (c) 2013 Georg Martius <georg dot martius at web dot de>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #define DEFAULT_INPUT_NAME "transforms.trf"
22 
23 #include <vid.stab/libvidstab.h>
24 
25 #include "libavutil/common.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/imgutils.h"
28 #include "avfilter.h"
29 #include "internal.h"
30 
31 #include "vidstabutils.h"
32 
33 typedef struct {
34  const AVClass *class;
35 
36  VSTransformData td;
37  VSTransformConfig conf;
38 
39  VSTransformations trans; // transformations
40  char *input; // name of transform file
41  int tripod;
42  int debug;
44 
45 #define OFFSET(x) offsetof(TransformContext, x)
46 #define OFFSETC(x) (offsetof(TransformContext, conf)+offsetof(VSTransformConfig, x))
47 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
48 
50  {"input", "set path to the file storing the transforms", OFFSET(input),
51  AV_OPT_TYPE_STRING, {.str = DEFAULT_INPUT_NAME}, .flags = FLAGS },
52  {"smoothing", "set number of frames*2 + 1 used for lowpass filtering", OFFSETC(smoothing),
53  AV_OPT_TYPE_INT, {.i64 = 15}, 0, 1000, FLAGS},
54 
55  {"optalgo", "set camera path optimization algo", OFFSETC(camPathAlgo),
56  AV_OPT_TYPE_INT, {.i64 = VSOptimalL1}, VSOptimalL1, VSAvg, FLAGS, "optalgo"},
57  { "opt", "global optimization", 0, // from version 1.0 on
58  AV_OPT_TYPE_CONST, {.i64 = VSOptimalL1 }, 0, 0, FLAGS, "optalgo"},
59  { "gauss", "gaussian kernel", 0,
60  AV_OPT_TYPE_CONST, {.i64 = VSGaussian }, 0, 0, FLAGS, "optalgo"},
61  { "avg", "simple averaging on motion", 0,
62  AV_OPT_TYPE_CONST, {.i64 = VSAvg }, 0, 0, FLAGS, "optalgo"},
63 
64  {"maxshift", "set maximal number of pixels to translate image", OFFSETC(maxShift),
65  AV_OPT_TYPE_INT, {.i64 = -1}, -1, 500, FLAGS},
66  {"maxangle", "set maximal angle in rad to rotate image", OFFSETC(maxAngle),
67  AV_OPT_TYPE_DOUBLE, {.dbl = -1.0}, -1.0, 3.14, FLAGS},
68 
69  {"crop", "set cropping mode", OFFSETC(crop),
70  AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS, "crop"},
71  { "keep", "keep border", 0,
72  AV_OPT_TYPE_CONST, {.i64 = VSKeepBorder }, 0, 0, FLAGS, "crop"},
73  { "black", "black border", 0,
74  AV_OPT_TYPE_CONST, {.i64 = VSCropBorder }, 0, 0, FLAGS, "crop"},
75 
76  {"invert", "invert transforms", OFFSETC(invert),
77  AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS},
78  {"relative", "consider transforms as relative", OFFSETC(relative),
79  AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, FLAGS},
80  {"zoom", "set percentage to zoom (>0: zoom in, <0: zoom out", OFFSETC(zoom),
81  AV_OPT_TYPE_DOUBLE, {.dbl = 0}, -100, 100, FLAGS},
82  {"optzoom", "set optimal zoom (0: nothing, 1: optimal static zoom, 2: optimal dynamic zoom)", OFFSETC(optZoom),
83  AV_OPT_TYPE_INT, {.i64 = 1}, 0, 2, FLAGS},
84  {"zoomspeed", "for adative zoom: percent to zoom maximally each frame", OFFSETC(zoomSpeed),
85  AV_OPT_TYPE_DOUBLE, {.dbl = 0.25}, 0, 5, FLAGS},
86 
87  {"interpol", "set type of interpolation", OFFSETC(interpolType),
88  AV_OPT_TYPE_INT, {.i64 = 2}, 0, 3, FLAGS, "interpol"},
89  { "no", "no interpolation", 0,
90  AV_OPT_TYPE_CONST, {.i64 = VS_Zero }, 0, 0, FLAGS, "interpol"},
91  { "linear", "linear (horizontal)", 0,
92  AV_OPT_TYPE_CONST, {.i64 = VS_Linear }, 0, 0, FLAGS, "interpol"},
93  { "bilinear","bi-linear", 0,
94  AV_OPT_TYPE_CONST, {.i64 = VS_BiLinear},0, 0, FLAGS, "interpol"},
95  { "bicubic", "bi-cubic", 0,
96  AV_OPT_TYPE_CONST, {.i64 = VS_BiCubic },0, 0, FLAGS, "interpol"},
97 
98  {"tripod", "enable virtual tripod mode (same as relative=0:smoothing=0)", OFFSET(tripod),
99  AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS},
100  {"debug", "enable debug mode and writer global motions information to file", OFFSET(debug),
101  AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS},
102  {NULL}
103 };
104 
105 AVFILTER_DEFINE_CLASS(vidstabtransform);
106 
107 static av_cold int init(AVFilterContext *ctx)
108 {
109  TransformContext *tc = ctx->priv;
110  ff_vs_init();
111  tc->class = &vidstabtransform_class;
112  av_log(ctx, AV_LOG_VERBOSE, "vidstabtransform filter: init %s\n", LIBVIDSTAB_VERSION);
113  return 0;
114 }
115 
116 static av_cold void uninit(AVFilterContext *ctx)
117 {
118  TransformContext *tc = ctx->priv;
119 
120  vsTransformDataCleanup(&tc->td);
121  vsTransformationsCleanup(&tc->trans);
122 }
123 
125 {
126  // If you add something here also add it in vidstabutils.c
127  static const enum AVPixelFormat pix_fmts[] = {
133  };
134 
136  return 0;
137 }
138 
139 
140 static int config_input(AVFilterLink *inlink)
141 {
142  AVFilterContext *ctx = inlink->dst;
143  TransformContext *tc = ctx->priv;
144  FILE *f;
145 
146  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
147 
148  VSTransformData *td = &(tc->td);
149 
150  VSFrameInfo fi_src;
151  VSFrameInfo fi_dest;
152 
153  if (!vsFrameInfoInit(&fi_src, inlink->w, inlink->h,
154  ff_av2vs_pixfmt(ctx, inlink->format)) ||
155  !vsFrameInfoInit(&fi_dest, inlink->w, inlink->h,
156  ff_av2vs_pixfmt(ctx, inlink->format))) {
157  av_log(ctx, AV_LOG_ERROR, "unknown pixel format: %i (%s)",
158  inlink->format, desc->name);
159  return AVERROR(EINVAL);
160  }
161 
162  if (fi_src.bytesPerPixel != av_get_bits_per_pixel(desc)/8 ||
163  fi_src.log2ChromaW != desc->log2_chroma_w ||
164  fi_src.log2ChromaH != desc->log2_chroma_h) {
165  av_log(ctx, AV_LOG_ERROR, "pixel-format error: bpp %i<>%i ",
166  fi_src.bytesPerPixel, av_get_bits_per_pixel(desc)/8);
167  av_log(ctx, AV_LOG_ERROR, "chroma_subsampl: w: %i<>%i h: %i<>%i\n",
168  fi_src.log2ChromaW, desc->log2_chroma_w,
169  fi_src.log2ChromaH, desc->log2_chroma_h);
170  return AVERROR(EINVAL);
171  }
172 
173  // set values that are not initializes by the options
174  tc->conf.modName = "vidstabtransform";
175  tc->conf.verbose = 1 + tc->debug;
176  if (tc->tripod) {
177  av_log(ctx, AV_LOG_INFO, "Virtual tripod mode: relative=0, smoothing=0\n");
178  tc->conf.relative = 0;
179  tc->conf.smoothing = 0;
180  }
181  tc->conf.simpleMotionCalculation = 0;
182  tc->conf.storeTransforms = tc->debug;
183  tc->conf.smoothZoom = 0;
184 
185  if (vsTransformDataInit(td, &tc->conf, &fi_src, &fi_dest) != VS_OK) {
186  av_log(ctx, AV_LOG_ERROR, "initialization of vid.stab transform failed, please report a BUG\n");
187  return AVERROR(EINVAL);
188  }
189 
190  vsTransformGetConfig(&tc->conf, td);
191  av_log(ctx, AV_LOG_INFO, "Video transformation/stabilization settings (pass 2/2):\n");
192  av_log(ctx, AV_LOG_INFO, " input = %s\n", tc->input);
193  av_log(ctx, AV_LOG_INFO, " smoothing = %d\n", tc->conf.smoothing);
194  av_log(ctx, AV_LOG_INFO, " optalgo = %s\n",
195  tc->conf.camPathAlgo == VSOptimalL1 ? "opt" :
196  (tc->conf.camPathAlgo == VSGaussian ? "gauss" : "avg"));
197  av_log(ctx, AV_LOG_INFO, " maxshift = %d\n", tc->conf.maxShift);
198  av_log(ctx, AV_LOG_INFO, " maxangle = %f\n", tc->conf.maxAngle);
199  av_log(ctx, AV_LOG_INFO, " crop = %s\n", tc->conf.crop ? "Black" : "Keep");
200  av_log(ctx, AV_LOG_INFO, " relative = %s\n", tc->conf.relative ? "True": "False");
201  av_log(ctx, AV_LOG_INFO, " invert = %s\n", tc->conf.invert ? "True" : "False");
202  av_log(ctx, AV_LOG_INFO, " zoom = %f\n", tc->conf.zoom);
203  av_log(ctx, AV_LOG_INFO, " optzoom = %s\n",
204  tc->conf.optZoom == 1 ? "Static (1)" : (tc->conf.optZoom == 2 ? "Dynamic (2)" : "Off (0)"));
205  if (tc->conf.optZoom == 2)
206  av_log(ctx, AV_LOG_INFO, " zoomspeed = %g\n", tc->conf.zoomSpeed);
207  av_log(ctx, AV_LOG_INFO, " interpol = %s\n", getInterpolationTypeName(tc->conf.interpolType));
208 
209  f = fopen(tc->input, "r");
210  if (!f) {
211  av_log(ctx, AV_LOG_ERROR, "cannot open input file %s\n", tc->input);
212  return AVERROR(errno);
213  } else {
214  VSManyLocalMotions mlms;
215  if (vsReadLocalMotionsFile(f, &mlms) == VS_OK) {
216  // calculate the actual transforms from the local motions
217  if (vsLocalmotions2Transforms(td, &mlms, &tc->trans) != VS_OK) {
218  av_log(ctx, AV_LOG_ERROR, "calculating transformations failed\n");
219  return AVERROR(EINVAL);
220  }
221  } else { // try to read old format
222  if (!vsReadOldTransforms(td, f, &tc->trans)) { /* read input file */
223  av_log(ctx, AV_LOG_ERROR, "error parsing input file %s\n", tc->input);
224  return AVERROR(EINVAL);
225  }
226  }
227  }
228  fclose(f);
229 
230  if (vsPreprocessTransforms(td, &tc->trans) != VS_OK) {
231  av_log(ctx, AV_LOG_ERROR, "error while preprocessing transforms\n");
232  return AVERROR(EINVAL);
233  }
234 
235  // TODO: add sharpening, so far the user needs to call the unsharp filter manually
236  return 0;
237 }
238 
239 
240 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
241 {
242  AVFilterContext *ctx = inlink->dst;
243  TransformContext *tc = ctx->priv;
244  VSTransformData* td = &(tc->td);
245 
246  AVFilterLink *outlink = inlink->dst->outputs[0];
247  int direct = 0;
248  AVFrame *out;
249  VSFrame inframe;
250  int plane;
251 
252  if (av_frame_is_writable(in)) {
253  direct = 1;
254  out = in;
255  } else {
256  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
257  if (!out) {
258  av_frame_free(&in);
259  return AVERROR(ENOMEM);
260  }
261  av_frame_copy_props(out, in);
262  }
263 
264  for (plane = 0; plane < vsTransformGetSrcFrameInfo(td)->planes; plane++) {
265  inframe.data[plane] = in->data[plane];
266  inframe.linesize[plane] = in->linesize[plane];
267  }
268  if (direct) {
269  vsTransformPrepare(td, &inframe, &inframe);
270  } else { // separate frames
271  VSFrame outframe;
272  for (plane = 0; plane < vsTransformGetDestFrameInfo(td)->planes; plane++) {
273  outframe.data[plane] = out->data[plane];
274  outframe.linesize[plane] = out->linesize[plane];
275  }
276  vsTransformPrepare(td, &inframe, &outframe);
277  }
278 
279  vsDoTransform(td, vsGetNextTransform(td, &tc->trans));
280 
281  vsTransformFinish(td);
282 
283  if (!direct)
284  av_frame_free(&in);
285 
286  return ff_filter_frame(outlink, out);
287 }
288 
290  {
291  .name = "default",
292  .type = AVMEDIA_TYPE_VIDEO,
293  .filter_frame = filter_frame,
294  .config_props = config_input,
295  },
296  { NULL }
297 };
298 
300  {
301  .name = "default",
302  .type = AVMEDIA_TYPE_VIDEO,
303  },
304  { NULL }
305 };
306 
308  .name = "vidstabtransform",
309  .description = NULL_IF_CONFIG_SMALL("Transform the frames, "
310  "pass 2 of 2 for stabilization "
311  "(see vidstabdetect for pass 1)."),
312  .priv_size = sizeof(TransformContext),
313  .init = init,
314  .uninit = uninit,
316  .inputs = avfilter_vf_vidstabtransform_inputs,
317  .outputs = avfilter_vf_vidstabtransform_outputs,
318  .priv_class = &vidstabtransform_class,
319 };