git.sesse.net Git - vlc/blob - modules/video_filter/opencv_wrapper.c

   1 /*****************************************************************************
   2  * opencv_wrapper.c : OpenCV wrapper video filter
   3  *****************************************************************************
   4  * Copyright (C) 2006 the VideoLAN team
   5  *
   6  * Authors: Dugal Harris <dugalh@protoclea.co.za>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 /*****************************************************************************
  24  * Preamble
  25  *****************************************************************************/
  26
  27 #include <cxcore.h>
  28 #include <cv.h>
  29 #include <highgui.h>
  30
  31 #ifdef HAVE_CONFIG_H
  32 # include "config.h"
  33 #endif
  34
  35 #include <vlc_common.h>
  36 #include <vlc_plugin.h>
  37 #include <vlc_vout.h>
  38
  39 #include <math.h>
  40 #include <time.h>
  41
  42 #include "vlc_filter.h"
  43 #include "filter_common.h"
  44 #include <vlc_charset.h>
  45 #include "vlc_image.h"
  46 #include "vlc_input.h"
  47 #include "vlc_playlist.h"
  48
  49
  50 /*****************************************************************************
  51  * Local prototypes
  52  *****************************************************************************/
  53 static int  Create    ( vlc_object_t * );
  54 static void Destroy   ( vlc_object_t * );
  55
  56 static int  Init      ( vout_thread_t * );
  57 static void End       ( vout_thread_t * );
  58 static void Render    ( vout_thread_t *, picture_t * );
  59
  60 static int  SendEvents( vlc_object_t *, char const *,
  61                         vlc_value_t, vlc_value_t, void * );
  62 static void ReleaseImages( vout_thread_t *p_vout );
  63 static void VlcPictureToIplImage( vout_thread_t *p_vout, picture_t *p_in );
  64
  65 /*****************************************************************************
  66  * Module descriptor
  67  *****************************************************************************/
  68
  69 static const char *const chroma_list[] = { "input", "I420", "RGB32"};
  70 static const char *const chroma_list_text[] = { N_("Use input chroma unaltered"),
  71   N_("I420 - first plane is greyscale"), N_("RGB32")};
  72
  73 static const char *const output_list[] = { "none", "input", "processed"};
  74 static const char *const output_list_text[] = { N_("Don't display any video"),
  75   N_("Display the input video"), N_("Display the processed video")};
  76
  77 static const char *const verbosity_list[] = { "error", "warning", "debug"};
  78 static const char *const verbosity_list_text[] = { N_("Show only errors"),
  79   N_("Show errors and warnings"), N_("Show everything including debug messages")};
  80
  81 vlc_module_begin();
  82     set_description( N_("OpenCV video filter wrapper") );
  83     set_shortname( N_("OpenCV" ));
  84     set_category( CAT_VIDEO );
  85     set_subcategory( SUBCAT_VIDEO_VFILTER );
  86     set_capability( "video filter", 0 );
  87     add_shortcut( "opencv_wrapper" );
  88     set_callbacks( Create, Destroy );
  89     add_float_with_range( "opencv-scale", 1.0, 0.1, 2.0, NULL,
  90                           N_("Scale factor (0.1-2.0)"),
  91                           N_("Ammount by which to scale the picture before sending it to the internal OpenCV filter"),
  92                           false );
  93     add_string( "opencv-chroma", "input", NULL,
  94                           N_("OpenCV filter chroma"),
  95                           N_("Chroma to convert picture to before sending it to the internal OpenCV filter"), false);
  96         change_string_list( chroma_list, chroma_list_text, 0);
  97     add_string( "opencv-output", "input", NULL,
  98                           N_("Wrapper filter output"),
  99                           N_("Determines what (if any) video is displayed by the wrapper filter"), false);
 100         change_string_list( output_list, output_list_text, 0);
 101     add_string( "opencv-verbosity", "error", NULL,
 102                           N_("Wrapper filter verbosity"),
 103                           N_("Determines wrapper filter verbosity level"), false);
 104         change_string_list( verbosity_list, verbosity_list_text, 0);
 105     add_string( "opencv-filter-name", "none", NULL,
 106                           N_("OpenCV internal filter name"),
 107                           N_("Name of internal OpenCV plugin filter to use"), false);
 108 vlc_module_end();
 109
 110
 111 /*****************************************************************************
 112  * wrapper_output_t: what video is output
 113  *****************************************************************************/
 114 enum wrapper_output_t
 115 {
 116    NONE,    //not working yet
 117    VINPUT,
 118    PROCESSED
 119 };
 120
 121 /*****************************************************************************
 122  * internal_chroma_t: what chroma is sent to the internal opencv filter
 123  *****************************************************************************/
 124 enum internal_chroma_t
 125 {
 126    CINPUT,
 127    GREY,
 128    RGB
 129 };
 130
 131 /*****************************************************************************
 132  * verbosity_t:
 133  *****************************************************************************/
 134 enum verbosity_t
 135 {
 136    VERB_ERROR,
 137    VERB_WARN,
 138    VERB_DEBUG
 139 };
 140
 141 /*****************************************************************************
 142  * vout_sys_t: opencv_wrapper video output method descriptor
 143  *****************************************************************************
 144  * This structure is part of the video output thread descriptor.
 145  * It describes the opencv_wrapper specific properties of an output thread.
 146  *****************************************************************************/
 147 struct vout_sys_t
 148 {
 149     vout_thread_t *p_vout;
 150
 151     image_handler_t *p_image;
 152
 153     int i_cv_image_size;
 154
 155     picture_t *p_proc_image;
 156     picture_t *p_to_be_freed;
 157
 158     float f_scale;
 159
 160     int i_wrapper_output;
 161     int i_internal_chroma;
 162     int i_verbosity;
 163
 164     IplImage *p_cv_image[VOUT_MAX_PLANES];
 165
 166     filter_t *p_opencv;
 167     char* psz_inner_name;
 168
 169     picture_t hacked_pic;
 170 };
 171
 172 /*****************************************************************************
 173  * Control: control facility for the vout (forwards to child vout)
 174  *****************************************************************************/
 175 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
 176 {
 177     return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
 178 }
 179
 180 /*****************************************************************************
 181  * Create: allocates opencv_wrapper video thread output method
 182  *****************************************************************************
 183  * This function allocates and initializes a opencv_wrapper vout method.
 184  *****************************************************************************/
 185 static int Create( vlc_object_t *p_this )
 186 {
 187     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 188     char *psz_chroma, *psz_output, *psz_verbosity;
 189     int i = 0;
 190
 191     /* Allocate structure */
 192     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 193     if( p_vout->p_sys == NULL )
 194         return VLC_ENOMEM;
 195
 196     /* Init structure */
 197     p_vout->p_sys->p_image = image_HandlerCreate( p_vout );
 198     for (i = 0; i < VOUT_MAX_PLANES; i++)
 199         p_vout->p_sys->p_cv_image[i] = NULL;
 200     p_vout->p_sys->p_proc_image = NULL;
 201     p_vout->p_sys->p_to_be_freed = NULL;
 202     p_vout->p_sys->i_cv_image_size = 0;
 203
 204     p_vout->pf_init = Init;
 205     p_vout->pf_end = End;
 206     p_vout->pf_manage = NULL;
 207     p_vout->pf_render = Render;
 208     p_vout->pf_display = NULL;
 209     p_vout->pf_control = Control;
 210
 211     /* Retrieve and apply config */
 212     if( !(psz_chroma = config_GetPsz( p_vout, "opencv-chroma" )) )
 213     {
 214         msg_Err( p_vout, "configuration variable %s empty, using 'grey'",
 215                          "opencv-chroma" );
 216         p_vout->p_sys->i_internal_chroma = GREY;
 217     }
 218     else
 219     {
 220         if( !strcmp( psz_chroma, "input" ) )
 221             p_vout->p_sys->i_internal_chroma = CINPUT;
 222         else if( !strcmp( psz_chroma, "I420" ) )
 223             p_vout->p_sys->i_internal_chroma = GREY;
 224         else if( !strcmp( psz_chroma, "RGB32" ) )
 225             p_vout->p_sys->i_internal_chroma = RGB;
 226         else
 227         {
 228             msg_Err( p_vout, "no valid opencv-chroma provided, using 'grey'" );
 229             p_vout->p_sys->i_internal_chroma = GREY;
 230         }
 231     }
 232     free( psz_chroma);
 233
 234     if( !(psz_output = config_GetPsz( p_vout, "opencv-output" )) )
 235     {
 236         msg_Err( p_vout, "configuration variable %s empty, using 'input'",
 237                          "opencv-output" );
 238         p_vout->p_sys->i_wrapper_output = VINPUT;
 239     }
 240     else
 241     {
 242         if( !strcmp( psz_output, "none" ) )
 243             p_vout->p_sys->i_wrapper_output = NONE;
 244         else if( !strcmp( psz_output, "input" ) )
 245             p_vout->p_sys->i_wrapper_output = VINPUT;
 246         else if( !strcmp( psz_output, "processed" ) )
 247             p_vout->p_sys->i_wrapper_output = PROCESSED;
 248         else
 249         {
 250             msg_Err( p_vout, "no valid opencv-output provided, using 'input'" );
 251             p_vout->p_sys->i_wrapper_output = VINPUT;
 252         }
 253     }
 254     free( psz_output);
 255
 256     if( !(psz_verbosity = config_GetPsz( p_vout, "opencv-verbosity" )) )
 257     {
 258         msg_Err( p_vout, "configuration variable %s empty, using 'input'",
 259                          "opencv-verbosity" );
 260         p_vout->p_sys->i_verbosity = VERB_ERROR;
 261     }
 262     else
 263     {
 264         if( !strcmp( psz_verbosity, "error" ) )
 265             p_vout->p_sys->i_verbosity = VERB_ERROR;
 266         else if( !strcmp( psz_verbosity, "warning" ) )
 267             p_vout->p_sys->i_verbosity = VERB_WARN;
 268         else if( !strcmp( psz_verbosity, "debug" ) )
 269             p_vout->p_sys->i_verbosity = VERB_DEBUG;
 270         else
 271         {
 272             msg_Err( p_vout, "no valid opencv-verbosity provided, using 'error'" );
 273             p_vout->p_sys->i_verbosity = VERB_ERROR;
 274         }
 275     }
 276     free( psz_verbosity);
 277
 278     p_vout->p_sys->psz_inner_name = config_GetPsz( p_vout, "opencv-filter-name" );
 279
 280     p_vout->p_sys->f_scale =
 281         config_GetFloat( p_vout, "opencv-scale" );
 282
 283     if (p_vout->p_sys->i_verbosity > VERB_WARN)
 284         msg_Info(p_vout, "Configuration: opencv-scale: %f, opencv-chroma: %d, "
 285             "opencv-output: %d, opencv-verbosity %d, opencv-filter %s",
 286             p_vout->p_sys->f_scale,
 287             p_vout->p_sys->i_internal_chroma,
 288             p_vout->p_sys->i_wrapper_output,
 289             p_vout->p_sys->i_verbosity,
 290             p_vout->p_sys->psz_inner_name);
 291
 292     return VLC_SUCCESS;
 293 }
 294
 295 /*****************************************************************************
 296  * Init: initialize opencv_wrapper video thread output method
 297  *****************************************************************************/
 298 static int Init( vout_thread_t *p_vout )
 299 {
 300     int i_index;
 301     picture_t *p_pic;
 302     video_format_t fmt;
 303     vout_sys_t *p_sys = p_vout->p_sys;
 304     I_OUTPUTPICTURES = 0;
 305
 306     /* Initialize the output video format */
 307     memset( &fmt, 0, sizeof(video_format_t) );
 308     p_vout->output.i_chroma = p_vout->render.i_chroma;
 309     p_vout->output.i_width  = p_vout->render.i_width;
 310     p_vout->output.i_height = p_vout->render.i_height;
 311     p_vout->output.i_aspect = p_vout->render.i_aspect;
 312     p_vout->fmt_out = p_vout->fmt_in;           //set to input video format
 313
 314     fmt = p_vout->fmt_out;
 315     if (p_sys->i_wrapper_output == PROCESSED)   //set to processed video format
 316     {
 317         fmt.i_width = fmt.i_width * p_sys->f_scale;
 318         fmt.i_height = fmt.i_height * p_sys->f_scale;
 319         fmt.i_visible_width = fmt.i_visible_width * p_sys->f_scale;
 320         fmt.i_visible_height = fmt.i_visible_height * p_sys->f_scale;
 321         fmt.i_x_offset = fmt.i_x_offset * p_sys->f_scale;
 322         fmt.i_y_offset = fmt.i_y_offset * p_sys->f_scale;
 323
 324         if (p_sys->i_internal_chroma == GREY)
 325             fmt.i_chroma = VLC_FOURCC('I','4','2','0');
 326         else if (p_sys->i_internal_chroma == RGB)
 327             fmt.i_chroma = VLC_FOURCC('R','V','3','2');
 328     }
 329
 330     /* Load the internal opencv filter */
 331     /* We don't need to set up video formats for this filter as it not actually using a picture_t */
 332     p_sys->p_opencv = vlc_object_create( p_vout, sizeof(filter_t) );
 333     vlc_object_attach( p_sys->p_opencv, p_vout );
 334
 335     if (p_vout->p_sys->psz_inner_name)
 336         p_sys->p_opencv->p_module =
 337             module_Need( p_sys->p_opencv, p_sys->psz_inner_name, 0, 0 );
 338
 339     if( !p_sys->p_opencv->p_module )
 340     {
 341         msg_Err( p_vout, "can't open internal opencv filter: %s", p_vout->p_sys->psz_inner_name );
 342         p_vout->p_sys->psz_inner_name = NULL;
 343         vlc_object_detach( p_sys->p_opencv );
 344         vlc_object_release( p_sys->p_opencv );
 345         p_sys->p_opencv = NULL;
 346     }
 347
 348     /* Try to open the real video output */
 349     if (p_sys->i_verbosity > VERB_WARN)
 350         msg_Dbg( p_vout, "spawning the real video output" );
 351
 352     p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
 353
 354     /* Everything failed */
 355     if( p_vout->p_sys->p_vout == NULL )
 356     {
 357         msg_Err( p_vout, "can't open vout, aborting" );
 358         return VLC_EGENERIC;
 359     }
 360
 361     ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
 362
 363     ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
 364
 365     ADD_PARENT_CALLBACKS( SendEventsToChild );
 366
 367     return VLC_SUCCESS;
 368 }
 369
 370 /*****************************************************************************
 371  * End: terminate opencv_wrapper video thread output method
 372  *****************************************************************************/
 373 static void End( vout_thread_t *p_vout )
 374 {
 375     int i_index;
 376
 377     /* Free the fake output buffers we allocated */
 378     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 379     {
 380         i_index--;
 381         free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
 382     }
 383
 384     if ( p_vout->p_sys->p_opencv )
 385     {
 386         //release the internal opencv filter
 387         if( p_vout->p_sys->p_opencv->p_module )
 388             module_Unneed( p_vout->p_sys->p_opencv, p_vout->p_sys->p_opencv->p_module );
 389         vlc_object_detach( p_vout->p_sys->p_opencv );
 390         vlc_object_release( p_vout->p_sys->p_opencv );
 391         p_vout->p_sys->p_opencv = NULL;
 392     }
 393
 394 }
 395
 396 /*****************************************************************************
 397  * Destroy: destroy opencv_wrapper video thread output method
 398  *****************************************************************************
 399  * Terminate an output method created by opencv_wrapperCreateOutputMethod
 400  *****************************************************************************/
 401 static void Destroy( vlc_object_t *p_this )
 402 {
 403     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 404
 405     if( p_vout->p_sys->p_vout )
 406     {
 407         DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
 408         vlc_object_detach( p_vout->p_sys->p_vout );
 409         vlc_object_release( p_vout->p_sys->p_vout );
 410     }
 411
 412     DEL_PARENT_CALLBACKS( SendEventsToChild );
 413
 414     ReleaseImages(p_vout);
 415
 416     if( p_vout->p_sys->p_image )
 417         image_HandlerDelete( p_vout->p_sys->p_image );
 418
 419     free( p_vout->p_sys );
 420 }
 421
 422 /*****************************************************************************
 423  * ReleaseImages: Release OpenCV images in vout_sys_t.
 424  *****************************************************************************/
 425 static void ReleaseImages(vout_thread_t *p_vout)
 426 {
 427     int i = 0;
 428     if (p_vout->p_sys->p_cv_image)
 429     {
 430         for (i = 0; i < VOUT_MAX_PLANES; i++)
 431         {
 432             if (p_vout->p_sys->p_cv_image[i])
 433                 cvReleaseImageHeader(&(p_vout->p_sys->p_cv_image[i]));
 434             p_vout->p_sys->p_cv_image[i] = NULL;
 435         }
 436     }
 437     p_vout->p_sys->i_cv_image_size = 0;
 438
 439     /* Release temp picture_t if it exists */
 440     if (p_vout->p_sys->p_to_be_freed)
 441     {
 442         p_vout->p_sys->p_to_be_freed->pf_release( p_vout->p_sys->p_to_be_freed );
 443         p_vout->p_sys->p_to_be_freed = NULL;
 444     }
 445     if (p_vout->p_sys->i_verbosity > VERB_WARN)
 446         msg_Dbg( p_vout, "images released" );
 447 }
 448
 449 /*****************************************************************************
 450  * VlcPictureToIplImage: Convert picture_t to IplImage
 451  *****************************************************************************
 452  * Converts given picture_t into IplImage(s) according to module config.
 453  * IplImage(s) are stored in vout_sys_t.
 454  *****************************************************************************/
 455 static void VlcPictureToIplImage( vout_thread_t *p_vout, picture_t *p_in )
 456 {
 457     int planes = p_in->i_planes;    //num input video planes
 458     // input video size
 459     CvSize sz = cvSize(abs(p_in->format.i_width), abs(p_in->format.i_height));
 460     video_format_t fmt_out;
 461     clock_t start, finish;  //performance measures
 462     double  duration;
 463     int i = 0;
 464     vout_sys_t* p_sys = p_vout->p_sys;
 465
 466     memset( &fmt_out, 0, sizeof(video_format_t) );
 467
 468     start = clock();
 469
 470     //do scale / color conversion according to p_sys config
 471     if ((p_sys->f_scale != 1) || (p_sys->i_internal_chroma != CINPUT))
 472     {
 473         fmt_out = p_in->format;
 474
 475         //calc the scaled video size
 476         fmt_out.i_width = p_in->format.i_width * p_sys->f_scale;
 477         fmt_out.i_height = p_in->format.i_height * p_sys->f_scale;
 478
 479         if (p_sys->i_internal_chroma == RGB)
 480         {
 481             //rgb2 gives 3 separate planes, this gives 1 interleaved plane
 482             //rv24 gives is about 20% faster but gives r&b the wrong way round
 483             //and I cant think of an easy way to fix this
 484             fmt_out.i_chroma = VLC_FOURCC('R','V','3','2');
 485         }
 486         else if (p_sys->i_internal_chroma == GREY)
 487         {
 488             //take the I (gray) plane (video seems to commonly be in this fmt so usually the
 489             //conversion does nothing)
 490             fmt_out.i_chroma = VLC_FOURCC('I','4','2','0');
 491         }
 492
 493         //convert from the input image
 494         p_sys->p_proc_image = image_Convert( p_sys->p_image, p_in,
 495                                      &(p_in->format), &fmt_out );
 496
 497         if (!p_sys->p_proc_image)
 498         {
 499             msg_Err(p_vout, "can't convert (unsupported formats?), aborting...");
 500             return;
 501         }
 502
 503         p_sys->p_to_be_freed = p_sys->p_proc_image;    //remember this so we can free it later
 504
 505     }
 506     else    //((p_sys->f_scale != 1) || (p_sys->i_internal_chroma != CINPUT))
 507     {
 508         //use the input image without conversion
 509         p_sys->p_proc_image = p_in;
 510     }
 511
 512     //Convert to the IplImage array that is to be processed.
 513     //If there are multiple planes in p_sys->p_proc_image, then 1 IplImage
 514     //is created for each plane.
 515     planes = p_sys->p_proc_image->i_planes;
 516     p_sys->i_cv_image_size = planes;
 517     for ( i = 0; i < planes; i++ )
 518     {
 519         sz = cvSize(abs(p_sys->p_proc_image->p[i].i_visible_pitch /
 520             p_sys->p_proc_image->p[i].i_pixel_pitch),
 521             abs(p_sys->p_proc_image->p[i].i_visible_lines));
 522
 523         p_sys->p_cv_image[i] = cvCreateImageHeader(sz, IPL_DEPTH_8U,
 524             p_sys->p_proc_image->p[i].i_pixel_pitch);
 525
 526         cvSetData( p_sys->p_cv_image[i],
 527             (char*)(p_sys->p_proc_image->p[i].p_pixels), p_sys->p_proc_image->p[i].i_pitch );
 528     }
 529
 530     //Hack the above opencv image array into a picture_t so that it can be sent to
 531     //another video filter
 532     p_sys->hacked_pic.p_data_orig = p_sys->p_cv_image;
 533     p_sys->hacked_pic.i_planes = planes;
 534     p_sys->hacked_pic.format.i_chroma = fmt_out.i_chroma;
 535
 536     //calculate duration of conversion
 537     finish = clock();
 538     duration = (double)(finish - start) / CLOCKS_PER_SEC;
 539     if (p_sys->i_verbosity > VERB_WARN)
 540         msg_Dbg( p_vout, "VlcPictureToIplImageRgb took %2.4f seconds\n", duration );
 541 }
 542
 543 /*****************************************************************************
 544  * Render: displays previously rendered output
 545  *****************************************************************************
 546  * This function send the currently rendered image to the internal opencv
 547  * filter for processing.
 548  *****************************************************************************/
 549 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
 550 {
 551     picture_t *p_outpic = NULL;
 552     clock_t start, finish;
 553     double  duration;
 554
 555     while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
 556               == NULL )
 557     {
 558         if( p_vout->b_die || p_vout->b_error )
 559         {   return; }
 560         msleep( VOUT_OUTMEM_SLEEP );
 561     }
 562
 563     vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
 564
 565     start = clock();
 566
 567     if (p_vout->p_sys->i_wrapper_output == VINPUT)  //output = input video
 568     {
 569         //This copy is a bit unfortunate but image_Convert can't write into an existing image so it is better to copy the
 570         //(say) 16bit YUV image here than a 32bit RGB image somehwere else.
 571         //It is also not that expensive in time.
 572         vout_CopyPicture( p_vout, p_outpic, p_pic );
 573         VlcPictureToIplImage( p_vout, p_pic);
 574         //pass the image to the internal opencv filter for processing
 575         if ((p_vout->p_sys->p_opencv) && (p_vout->p_sys->p_opencv->p_module))
 576             p_vout->p_sys->p_opencv->pf_video_filter( p_vout->p_sys->p_opencv, &(p_vout->p_sys->hacked_pic));
 577     }
 578     else    //output = processed video (NONE option not working yet)
 579     {
 580         VlcPictureToIplImage( p_vout, p_pic);
 581         //pass the image to the internal opencv filter for processing
 582         if ((p_vout->p_sys->p_opencv) && (p_vout->p_sys->p_opencv->p_module))
 583             p_vout->p_sys->p_opencv->pf_video_filter( p_vout->p_sys->p_opencv, &(p_vout->p_sys->hacked_pic));
 584         //copy the processed image into the output image
 585         if ((p_vout->p_sys->p_proc_image) && (p_vout->p_sys->p_proc_image->p_data))
 586             vout_CopyPicture( p_vout, p_outpic, p_vout->p_sys->p_proc_image );
 587     }
 588
 589     //calculate duration
 590     finish = clock();
 591     duration = (double)(finish - start) / CLOCKS_PER_SEC;
 592     if (p_vout->p_sys->i_verbosity > VERB_WARN)
 593         msg_Dbg( p_vout, "Render took %2.4f seconds\n", duration );
 594
 595     ReleaseImages(p_vout);
 596     vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
 597
 598     vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
 599     vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
 600 }
 601
 602 /*****************************************************************************
 603  * SendEvents: forward mouse and keyboard events to the parent p_vout
 604  *****************************************************************************/
 605 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
 606                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 607 {
 608     var_Set( (vlc_object_t *)p_data, psz_var, newval );
 609
 610     return VLC_SUCCESS;
 611 }
 612
 613 /*****************************************************************************
 614  * SendEventsToChild: forward events to the child/children vout
 615  *****************************************************************************/
 616 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
 617                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 618 {
 619     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 620     var_Set( p_vout->p_sys->p_vout, psz_var, newval );
 621     return VLC_SUCCESS;
 622 }