git.sesse.net Git - mlt/blob - src/modules/vid.stab/filter_transform.cpp

   1 /*
   2  * filter_transform.cpp
   3  * Copyright (C) 2013
   4  * Marco Gittler <g.marco@freenet.de>
   5  * Jakub Ksiezniak <j.ksiezniak@gmail.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program 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
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software Foundation,
  19  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20  */
  21
  22 extern "C"
  23 {
  24 #include <vid.stab/libvidstab.h>
  25 #include <framework/mlt.h>
  26 #include <framework/mlt_animation.h>
  27 }
  28
  29 #include <string.h>
  30 #include <assert.h>
  31 #include <sstream>
  32 #include "common.h"
  33
  34 #define FILTER_NAME "vid.stab.transform"
  35
  36 typedef struct
  37 {
  38         bool initialized;
  39         VSTransformData td;
  40         VSTransformations trans;
  41
  42         void *parent;
  43 } TransformData;
  44
  45 int lm_deserialize(LocalMotions *lms, mlt_property property)
  46 {
  47         std::istringstream iss(mlt_property_get_string(property));
  48         vs_vector_init(lms, 0);
  49
  50         while (iss.good())
  51         {
  52                 LocalMotion lm;
  53                 iss >> lm.v.x >> lm.v.y >> lm.f.x >> lm.f.y >> lm.f.size >> lm.contrast >> lm.match;
  54                 if (iss.fail())
  55                 {
  56                         break;
  57                 }
  58                 vs_vector_append_dup(lms, &lm, sizeof(lm));
  59         }
  60         return 0;
  61 }
  62
  63 int vectors_deserialize(mlt_animation anim, VSManyLocalMotions *mlms)
  64 {
  65         int error = 0;
  66         mlt_animation_item_s item;
  67         item.property = mlt_property_init();
  68
  69         vs_vector_init(mlms, 1024); // initial number of frames, but it will be increased
  70
  71         int length = mlt_animation_get_length(anim);
  72         for (int i = 0; i < length; ++i)
  73         {
  74                 LocalMotions lms;
  75
  76                 // read lms
  77                 mlt_animation_get_item(anim, &item, i + 1);
  78                 if ((error = lm_deserialize(&lms, item.property)))
  79                 {
  80                         break;
  81                 }
  82
  83                 vs_vector_set_dup(mlms, i, &lms, sizeof(LocalMotions));
  84         }
  85
  86         mlt_property_close(item.property);
  87         return error;
  88 }
  89
  90 inline int initialize_transforms(TransformData *data, int *width, int *height, mlt_image_format *format,
  91                 mlt_properties properties, char* interps)
  92 {
  93         VSPixelFormat pf = convertImageFormat(*format);
  94         VSFrameInfo fi_src, fi_dst;
  95         vsFrameInfoInit(&fi_src, *width, *height, pf);
  96         vsFrameInfoInit(&fi_dst, *width, *height, pf);
  97
  98         VSTransformConfig conf = vsTransformGetDefaultConfig(FILTER_NAME);
  99         conf.smoothing = mlt_properties_get_int(properties, "smoothing");
 100         conf.maxShift = mlt_properties_get_int(properties, "maxshift");
 101         conf.maxAngle = mlt_properties_get_double(properties, "maxangle");
 102         conf.crop = (VSBorderType) mlt_properties_get_int(properties, "crop");
 103         conf.zoom = mlt_properties_get_int(properties, "zoom");
 104         conf.optZoom = mlt_properties_get_int(properties, "optzoom");
 105         conf.relative = mlt_properties_get_int(properties, "relative");
 106         conf.invert = mlt_properties_get_int(properties, "invert");
 107         if (mlt_properties_get_int(properties, "tripod") != 0)
 108         {
 109                 // Virtual tripod mode: relative=False, smoothing=0
 110                 conf.relative = 0;
 111                 conf.smoothing = 0;
 112         }
 113
 114         // by default a bilinear interpolation is selected
 115         conf.interpolType = VS_BiLinear;
 116         if (strcmp(interps, "nearest") == 0 || strcmp(interps, "neighbor") == 0)
 117                 conf.interpolType = VS_Zero;
 118         else if (strcmp(interps, "tiles") == 0 || strcmp(interps, "fast_bilinear") == 0)
 119                 conf.interpolType = VS_Linear;
 120
 121         vsTransformDataInit(&data->td, &conf, &fi_src, &fi_dst);
 122
 123         vsTransformationsInit(&data->trans);
 124
 125         // load transformations
 126         mlt_animation animation = mlt_animation_new();
 127         char* strAnim = mlt_properties_get(properties, "vectors");
 128         if (mlt_animation_parse(animation, strAnim, 0, 0, NULL))
 129         {
 130                 mlt_log_warning(NULL, "parse failed\n");
 131                 return 1;
 132         }
 133
 134         VSManyLocalMotions mlms;
 135         if (vectors_deserialize(animation, &mlms))
 136         {
 137                 return 1;
 138         }
 139
 140         mlt_animation_close(animation);
 141
 142         vsLocalmotions2Transforms(&data->td, &mlms, &data->trans);
 143         vsPreprocessTransforms(&data->td, &data->trans);
 144         return 0;
 145 }
 146
 147 void clear_transforms(TransformData *data)
 148 {
 149         if (data->initialized)
 150         {
 151                 vsTransformDataCleanup(&data->td);
 152                 vsTransformationsCleanup(&data->trans);
 153         }
 154 }
 155
 156 static int get_image(mlt_frame frame, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable)
 157 {
 158         int error = 0;
 159         mlt_filter filter = (mlt_filter) mlt_frame_pop_service(frame);
 160         mlt_properties properties = MLT_FILTER_PROPERTIES(filter);
 161
 162         *format = mlt_image_yuv420p;
 163         TransformData *data = static_cast<TransformData*>(filter->child);
 164
 165         error = mlt_frame_get_image(frame, image, format, width, height, 1);
 166         if (!error)
 167         {
 168                 // Service locks are for concurrency control
 169                 mlt_service_lock(MLT_FILTER_SERVICE(filter));
 170
 171                 // Handle signal from app to re-init data
 172                 if (mlt_properties_get_int(properties, "refresh"))
 173                 {
 174                         mlt_properties_set(properties, "refresh", NULL);
 175                         clear_transforms(data);
 176                         data->initialized = false;
 177                 }
 178
 179                 if (!data->initialized)
 180                 {
 181                         char *interps = mlt_properties_get(MLT_FRAME_PROPERTIES(frame), "rescale.interp");
 182                         initialize_transforms(data, width, height, format, properties, interps);
 183                         data->initialized = true;
 184                 }
 185
 186                 VSTransformData* td = &data->td;
 187                 VSFrame vsFrame;
 188                 vsFrameFillFromBuffer(&vsFrame, *image, vsTransformGetSrcFrameInfo(td));
 189
 190                 // transform frame
 191                 data->trans.current = mlt_filter_get_position(filter, frame);
 192                 vsTransformPrepare(td, &vsFrame, &vsFrame);
 193                 VSTransform t = vsGetNextTransform(td, &data->trans);
 194                 vsDoTransform(td, t);
 195                 vsTransformFinish(td);
 196
 197                 mlt_service_unlock(MLT_FILTER_SERVICE(filter));
 198         }
 199
 200         return error;
 201 }
 202
 203 static mlt_frame process_filter(mlt_filter filter, mlt_frame frame)
 204 {
 205         mlt_frame_push_service(frame, filter);
 206         mlt_frame_push_get_image(frame, get_image);
 207         return frame;
 208 }
 209
 210 static void close_filter(mlt_filter filter)
 211 {
 212         TransformData *data = static_cast<TransformData*>(filter->child);
 213         if (data)
 214         {
 215                 clear_transforms(data);
 216                 delete data;
 217                 filter->child = NULL;
 218         }
 219 }
 220
 221 extern "C"
 222 {
 223
 224 mlt_filter filter_transform_init(mlt_profile profile, mlt_service_type type, const char *id, char *arg)
 225 {
 226         mlt_filter filter = NULL;
 227
 228         TransformData *data = new TransformData;
 229         memset(data, 0, sizeof(TransformData));
 230
 231         if ((filter = mlt_filter_new()))
 232         {
 233                 filter->process = process_filter;
 234                 filter->close = close_filter;
 235                 filter->child = data;
 236
 237                 data->parent = filter;
 238
 239                 mlt_properties properties = MLT_FILTER_PROPERTIES(filter);
 240
 241                 // properties for transform
 242                 mlt_properties_set(properties, "smoothing", "10");
 243                 mlt_properties_set(properties, "maxshift", "-1");
 244                 mlt_properties_set(properties, "maxangle", "-1");
 245                 mlt_properties_set(properties, "crop", "0");
 246                 mlt_properties_set(properties, "invert", "0");
 247                 mlt_properties_set(properties, "relative", "1");
 248                 mlt_properties_set(properties, "zoom", "0");
 249                 mlt_properties_set(properties, "optzoom", "1");
 250
 251                 return filter;
 252         }
 253
 254         delete data;
 255         return NULL;
 256 }
 257
 258 }