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 #ifdef HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #include <vlc_common.h>
  32 #include <vlc_plugin.h>
  33 #include <vlc_vout.h>
  34
  35 #include <math.h>
  36 #include <time.h>
  37
  38 #include <vlc_filter.h>
  39 #include "filter_common.h"
  40 #include <vlc_image.h>
  41 #include <vlc_input.h>
  42 #include <vlc_playlist.h>
  43
  44 #include <cxcore.h>
  45 #include <cv.h>
  46
  47
  48 /*****************************************************************************
  49  * Local prototypes
  50  *****************************************************************************/
  51 static int  Create    ( vlc_object_t * );
  52 static void Destroy   ( vlc_object_t * );
  53
  54 static int  Init      ( vout_thread_t * );
  55 static void End       ( vout_thread_t * );
  56 static void Render    ( vout_thread_t *, picture_t * );
  57
  58 static void ReleaseImages( vout_thread_t *p_vout );
  59 static void VlcPictureToIplImage( vout_thread_t *p_vout, picture_t *p_in );
  60
  61 /*****************************************************************************
  62  * Module descriptor
  63  *****************************************************************************/
  64
  65 static const char *const chroma_list[] = { "input", "I420", "RGB32"};
  66 static const char *const chroma_list_text[] = { N_("Use input chroma unaltered"),
  67   N_("I420 - first plane is greyscale"), N_("RGB32")};
  68
  69 static const char *const output_list[] = { "none", "input", "processed"};
  70 static const char *const output_list_text[] = { N_("Don't display any video"),
  71   N_("Display the input video"), N_("Display the processed video")};
  72
  73 static const char *const verbosity_list[] = { "error", "warning", "debug"};
  74 static const char *const verbosity_list_text[] = { N_("Show only errors"),
  75   N_("Show errors and warnings"), N_("Show everything including debug messages")};
  76
  77 vlc_module_begin ()
  78     set_description( N_("OpenCV video filter wrapper") )
  79     set_shortname( N_("OpenCV" ))
  80     set_category( CAT_VIDEO )
  81     set_subcategory( SUBCAT_VIDEO_VFILTER )
  82     set_capability( "video filter", 0 )
  83     add_shortcut( "opencv_wrapper" )
  84     set_callbacks( Create, Destroy )
  85     add_float_with_range( "opencv-scale", 1.0, 0.1, 2.0, NULL,
  86                           N_("Scale factor (0.1-2.0)"),
  87                           N_("Ammount by which to scale the picture before sending it to the internal OpenCV filter"),
  88                           false )
  89     add_string( "opencv-chroma", "input", NULL,
  90                           N_("OpenCV filter chroma"),
  91                           N_("Chroma to convert picture to before sending it to the internal OpenCV filter"), false);
  92         change_string_list( chroma_list, chroma_list_text, 0);
  93     add_string( "opencv-output", "input", NULL,
  94                           N_("Wrapper filter output"),
  95                           N_("Determines what (if any) video is displayed by the wrapper filter"), false);
  96         change_string_list( output_list, output_list_text, 0);
  97     add_string( "opencv-verbosity", "error", NULL,
  98                           N_("Wrapper filter verbosity"),
  99                           N_("Determines wrapper filter verbosity level"), false);
 100         change_string_list( verbosity_list, verbosity_list_text, 0);
 101     add_string( "opencv-filter-name", "none", NULL,
 102                           N_("OpenCV internal filter name"),
 103                           N_("Name of internal OpenCV plugin filter to use"), false);
 104 vlc_module_end ()
 105
 106
 107 /*****************************************************************************
 108  * wrapper_output_t: what video is output
 109  *****************************************************************************/
 110 enum wrapper_output_t
 111 {
 112    NONE,    //not working yet
 113    VINPUT,
 114    PROCESSED
 115 };
 116
 117 /*****************************************************************************
 118  * internal_chroma_t: what chroma is sent to the internal opencv filter
 119  *****************************************************************************/
 120 enum internal_chroma_t
 121 {
 122    CINPUT,
 123    GREY,
 124    RGB
 125 };
 126
 127 /*****************************************************************************
 128  * verbosity_t:
 129  *****************************************************************************/
 130 enum verbosity_t
 131 {
 132    VERB_ERROR,
 133    VERB_WARN,
 134    VERB_DEBUG
 135 };
 136
 137 /*****************************************************************************
 138  * vout_sys_t: opencv_wrapper video output method descriptor
 139  *****************************************************************************
 140  * This structure is part of the video output thread descriptor.
 141  * It describes the opencv_wrapper specific properties of an output thread.
 142  *****************************************************************************/
 143 struct vout_sys_t
 144 {
 145     vout_thread_t *p_vout;
 146
 147     image_handler_t *p_image;
 148
 149     int i_cv_image_size;
 150
 151     picture_t *p_proc_image;
 152     picture_t *p_to_be_freed;
 153
 154     float f_scale;
 155
 156     int i_wrapper_output;
 157     int i_internal_chroma;
 158     int i_verbosity;
 159
 160     IplImage *p_cv_image[VOUT_MAX_PLANES];
 161
 162     filter_t *p_opencv;
 163     char* psz_inner_name;
 164
 165     picture_t hacked_pic;
 166 };
 167
 168 /*****************************************************************************
 169  * Control: control facility for the vout (forwards to child vout)
 170  *****************************************************************************/
 171 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
 172 {
 173     return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
 174 }
 175
 176 /*****************************************************************************
 177  * Create: allocates opencv_wrapper video thread output method
 178  *****************************************************************************
 179  * This function allocates and initializes a opencv_wrapper vout method.
 180  *****************************************************************************/
 181 static int Create( vlc_object_t *p_this )
 182 {
 183     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 184     char *psz_chroma, *psz_output, *psz_verbosity;
 185     int i = 0;
 186
 187     /* Allocate structure */
 188     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 189     if( p_vout->p_sys == NULL )
 190         return VLC_ENOMEM;
 191
 192     /* Init structure */
 193     p_vout->p_sys->p_image = image_HandlerCreate( p_vout );
 194     for (i = 0; i < VOUT_MAX_PLANES; i++)
 195         p_vout->p_sys->p_cv_image[i] = NULL;
 196     p_vout->p_sys->p_proc_image = NULL;
 197     p_vout->p_sys->p_to_be_freed = NULL;
 198     p_vout->p_sys->i_cv_image_size = 0;
 199
 200     p_vout->pf_init = Init;
 201     p_vout->pf_end = End;
 202     p_vout->pf_manage = NULL;
 203     p_vout->pf_render = Render;
 204     p_vout->pf_display = NULL;
 205     p_vout->pf_control = Control;
 206
 207     /* Retrieve and apply config */
 208     psz_chroma = var_InheritString( p_vout, "opencv-chroma" );
 209     if( psz_chroma == NULL )
 210     {
 211         msg_Err( p_vout, "configuration variable %s empty, using 'grey'",
 212                          "opencv-chroma" );
 213         p_vout->p_sys->i_internal_chroma = GREY;
 214     }
 215     else
 216     {
 217         if( !strcmp( psz_chroma, "input" ) )
 218             p_vout->p_sys->i_internal_chroma = CINPUT;
 219         else if( !strcmp( psz_chroma, "I420" ) )
 220             p_vout->p_sys->i_internal_chroma = GREY;
 221         else if( !strcmp( psz_chroma, "RGB32" ) )
 222             p_vout->p_sys->i_internal_chroma = RGB;
 223         else
 224         {
 225             msg_Err( p_vout, "no valid opencv-chroma provided, using 'grey'" );
 226             p_vout->p_sys->i_internal_chroma = GREY;
 227         }
 228     }
 229     free( psz_chroma);
 230
 231     psz_output = var_InheritString( p_vout, "opencv-output" );
 232     if( psz_output == NULL )
 233     {
 234         msg_Err( p_vout, "configuration variable %s empty, using 'input'",
 235                          "opencv-output" );
 236         p_vout->p_sys->i_wrapper_output = VINPUT;
 237     }
 238     else
 239     {
 240         if( !strcmp( psz_output, "none" ) )
 241             p_vout->p_sys->i_wrapper_output = NONE;
 242         else if( !strcmp( psz_output, "input" ) )
 243             p_vout->p_sys->i_wrapper_output = VINPUT;
 244         else if( !strcmp( psz_output, "processed" ) )
 245             p_vout->p_sys->i_wrapper_output = PROCESSED;
 246         else
 247         {
 248             msg_Err( p_vout, "no valid opencv-output provided, using 'input'" );
 249             p_vout->p_sys->i_wrapper_output = VINPUT;
 250         }
 251     }
 252     free( psz_output);
 253
 254     psz_verbosity = var_InheritString( p_vout, "opencv-verbosity" );
 255     if( psz_verbosity == NULL )
 256     {
 257         msg_Err( p_vout, "configuration variable %s empty, using 'input'",
 258                          "opencv-verbosity" );
 259         p_vout->p_sys->i_verbosity = VERB_ERROR;
 260     }
 261     else
 262     {
 263         if( !strcmp( psz_verbosity, "error" ) )
 264             p_vout->p_sys->i_verbosity = VERB_ERROR;
 265         else if( !strcmp( psz_verbosity, "warning" ) )
 266             p_vout->p_sys->i_verbosity = VERB_WARN;
 267         else if( !strcmp( psz_verbosity, "debug" ) )
 268             p_vout->p_sys->i_verbosity = VERB_DEBUG;
 269         else
 270         {
 271             msg_Err( p_vout, "no valid opencv-verbosity provided, using 'error'" );
 272             p_vout->p_sys->i_verbosity = VERB_ERROR;
 273         }
 274     }
 275     free( psz_verbosity);
 276
 277     p_vout->p_sys->psz_inner_name =
 278         var_InheritString( p_vout, "opencv-filter-name" );
 279     p_vout->p_sys->f_scale =
 280         var_InheritFloat( p_vout, "opencv-scale" );
 281
 282     if (p_vout->p_sys->i_verbosity > VERB_WARN)
 283         msg_Info(p_vout, "Configuration: opencv-scale: %f, opencv-chroma: %d, "
 284             "opencv-output: %d, opencv-verbosity %d, opencv-filter %s",
 285             p_vout->p_sys->f_scale,
 286             p_vout->p_sys->i_internal_chroma,
 287             p_vout->p_sys->i_wrapper_output,
 288             p_vout->p_sys->i_verbosity,
 289             p_vout->p_sys->psz_inner_name);
 290
 291     return VLC_SUCCESS;
 292 }
 293
 294 /*****************************************************************************
 295  * Init: initialize opencv_wrapper video thread output method
 296  *****************************************************************************/
 297 static int Init( vout_thread_t *p_vout )
 298 {
 299     video_format_t fmt;
 300     vout_sys_t *p_sys = p_vout->p_sys;
 301     I_OUTPUTPICTURES = 0;
 302
 303     /* Initialize the output video format */
 304     memset( &fmt, 0, sizeof(video_format_t) );
 305     p_vout->output.i_chroma = p_vout->render.i_chroma;
 306     p_vout->output.i_width  = p_vout->render.i_width;
 307     p_vout->output.i_height = p_vout->render.i_height;
 308     p_vout->output.i_aspect = p_vout->render.i_aspect;
 309     p_vout->fmt_out = p_vout->fmt_in;           //set to input video format
 310
 311     fmt = p_vout->fmt_out;
 312     if (p_sys->i_wrapper_output == PROCESSED)   //set to processed video format
 313     {
 314         fmt.i_width = fmt.i_width * p_sys->f_scale;
 315         fmt.i_height = fmt.i_height * p_sys->f_scale;
 316         fmt.i_visible_width = fmt.i_visible_width * p_sys->f_scale;
 317         fmt.i_visible_height = fmt.i_visible_height * p_sys->f_scale;
 318         fmt.i_x_offset = fmt.i_x_offset * p_sys->f_scale;
 319         fmt.i_y_offset = fmt.i_y_offset * p_sys->f_scale;
 320
 321         if (p_sys->i_internal_chroma == GREY)
 322             fmt.i_chroma = VLC_CODEC_I420;
 323         else if (p_sys->i_internal_chroma == RGB)
 324             fmt.i_chroma = VLC_CODEC_RGB32;
 325     }
 326
 327     /* Load the internal opencv filter */
 328     /* We don't need to set up video formats for this filter as it not actually using a picture_t */
 329     p_sys->p_opencv = vlc_object_create( p_vout, sizeof(filter_t) );
 330     vlc_object_attach( p_sys->p_opencv, p_vout );
 331
 332     if (p_vout->p_sys->psz_inner_name)
 333         p_sys->p_opencv->p_module =
 334             module_need( p_sys->p_opencv, p_sys->psz_inner_name, NULL, false );
 335
 336     if( !p_sys->p_opencv->p_module )
 337     {
 338         msg_Err( p_vout, "can't open internal opencv filter: %s", p_vout->p_sys->psz_inner_name );
 339         p_vout->p_sys->psz_inner_name = NULL;
 340         vlc_object_release( p_sys->p_opencv );
 341         p_sys->p_opencv = NULL;
 342     }
 343
 344     /* Try to open the real video output */
 345     if (p_sys->i_verbosity > VERB_WARN)
 346         msg_Dbg( p_vout, "spawning the real video output" );
 347
 348     p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
 349
 350     /* Everything failed */
 351     if( p_vout->p_sys->p_vout == NULL )
 352     {
 353         msg_Err( p_vout, "can't open vout, aborting" );
 354         return VLC_EGENERIC;
 355     }
 356
 357     vout_filter_AllocateDirectBuffers( p_vout, VOUT_MAX_PICTURES );
 358
 359     vout_filter_AddChild( p_vout, p_vout->p_sys->p_vout, NULL );
 360
 361     return VLC_SUCCESS;
 362 }
 363
 364 /*****************************************************************************
 365  * End: terminate opencv_wrapper video thread output method
 366  *****************************************************************************/
 367 static void End( vout_thread_t *p_vout )
 368 {
 369     vout_sys_t *p_sys = p_vout->p_sys;
 370
 371     vout_filter_DelChild( p_vout, p_sys->p_vout, NULL );
 372     vout_CloseAndRelease( p_sys->p_vout );
 373
 374     vout_filter_ReleaseDirectBuffers( p_vout );
 375
 376     if( p_sys->p_opencv )
 377     {
 378         //release the internal opencv filter
 379         if( p_sys->p_opencv->p_module )
 380             module_unneed( p_sys->p_opencv, p_sys->p_opencv->p_module );
 381         vlc_object_release( p_sys->p_opencv );
 382         p_sys->p_opencv = NULL;
 383     }
 384 }
 385
 386 /*****************************************************************************
 387  * Destroy: destroy opencv_wrapper video thread output method
 388  *****************************************************************************
 389  * Terminate an output method created by opencv_wrapperCreateOutputMethod
 390  *****************************************************************************/
 391 static void Destroy( vlc_object_t *p_this )
 392 {
 393     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 394
 395     ReleaseImages(p_vout);
 396
 397     if( p_vout->p_sys->p_image )
 398         image_HandlerDelete( p_vout->p_sys->p_image );
 399
 400     free( p_vout->p_sys );
 401 }
 402
 403 /*****************************************************************************
 404  * ReleaseImages: Release OpenCV images in vout_sys_t.
 405  *****************************************************************************/
 406 static void ReleaseImages(vout_thread_t *p_vout)
 407 {
 408     int i = 0;
 409     if (p_vout->p_sys->p_cv_image)
 410     {
 411         for (i = 0; i < VOUT_MAX_PLANES; i++)
 412         {
 413             if (p_vout->p_sys->p_cv_image[i])
 414                 cvReleaseImageHeader(&(p_vout->p_sys->p_cv_image[i]));
 415             p_vout->p_sys->p_cv_image[i] = NULL;
 416         }
 417     }
 418     p_vout->p_sys->i_cv_image_size = 0;
 419
 420     /* Release temp picture_t if it exists */
 421     if (p_vout->p_sys->p_to_be_freed)
 422     {
 423         picture_Release( p_vout->p_sys->p_to_be_freed );
 424         p_vout->p_sys->p_to_be_freed = NULL;
 425     }
 426     if (p_vout->p_sys->i_verbosity > VERB_WARN)
 427         msg_Dbg( p_vout, "images released" );
 428 }
 429
 430 /*****************************************************************************
 431  * VlcPictureToIplImage: Convert picture_t to IplImage
 432  *****************************************************************************
 433  * Converts given picture_t into IplImage(s) according to module config.
 434  * IplImage(s) are stored in vout_sys_t.
 435  *****************************************************************************/
 436 static void VlcPictureToIplImage( vout_thread_t *p_vout, picture_t *p_in )
 437 {
 438     int planes = p_in->i_planes;    //num input video planes
 439     // input video size
 440     CvSize sz = cvSize(abs(p_in->format.i_width), abs(p_in->format.i_height));
 441     video_format_t fmt_out;
 442     clock_t start, finish;  //performance measures
 443     double  duration;
 444     int i = 0;
 445     vout_sys_t* p_sys = p_vout->p_sys;
 446
 447     memset( &fmt_out, 0, sizeof(video_format_t) );
 448
 449     start = clock();
 450
 451     //do scale / color conversion according to p_sys config
 452     if ((p_sys->f_scale != 1) || (p_sys->i_internal_chroma != CINPUT))
 453     {
 454         fmt_out = p_in->format;
 455
 456         //calc the scaled video size
 457         fmt_out.i_width = p_in->format.i_width * p_sys->f_scale;
 458         fmt_out.i_height = p_in->format.i_height * p_sys->f_scale;
 459
 460         if (p_sys->i_internal_chroma == RGB)
 461         {
 462             //rgb2 gives 3 separate planes, this gives 1 interleaved plane
 463             //rv24 gives is about 20% faster but gives r&b the wrong way round
 464             //and I cant think of an easy way to fix this
 465             fmt_out.i_chroma = VLC_CODEC_RGB32;
 466         }
 467         else if (p_sys->i_internal_chroma == GREY)
 468         {
 469             //take the I (gray) plane (video seems to commonly be in this fmt so usually the
 470             //conversion does nothing)
 471             fmt_out.i_chroma = VLC_CODEC_I420;
 472         }
 473
 474         //convert from the input image
 475         p_sys->p_proc_image = image_Convert( p_sys->p_image, p_in,
 476                                      &(p_in->format), &fmt_out );
 477
 478         if (!p_sys->p_proc_image)
 479         {
 480             msg_Err(p_vout, "can't convert (unsupported formats?), aborting...");
 481             return;
 482         }
 483
 484         p_sys->p_to_be_freed = p_sys->p_proc_image;    //remember this so we can free it later
 485
 486     }
 487     else    //((p_sys->f_scale != 1) || (p_sys->i_internal_chroma != CINPUT))
 488     {
 489         //use the input image without conversion
 490         p_sys->p_proc_image = p_in;
 491     }
 492
 493     //Convert to the IplImage array that is to be processed.
 494     //If there are multiple planes in p_sys->p_proc_image, then 1 IplImage
 495     //is created for each plane.
 496     planes = p_sys->p_proc_image->i_planes;
 497     p_sys->i_cv_image_size = planes;
 498     for ( i = 0; i < planes; i++ )
 499     {
 500         sz = cvSize(abs(p_sys->p_proc_image->p[i].i_visible_pitch /
 501             p_sys->p_proc_image->p[i].i_pixel_pitch),
 502             abs(p_sys->p_proc_image->p[i].i_visible_lines));
 503
 504         p_sys->p_cv_image[i] = cvCreateImageHeader(sz, IPL_DEPTH_8U,
 505             p_sys->p_proc_image->p[i].i_pixel_pitch);
 506
 507         cvSetData( p_sys->p_cv_image[i],
 508             (char*)(p_sys->p_proc_image->p[i].p_pixels), p_sys->p_proc_image->p[i].i_pitch );
 509     }
 510
 511     //Hack the above opencv image array into a picture_t so that it can be sent to
 512     //another video filter
 513     p_sys->hacked_pic.p_data_orig = p_sys->p_cv_image;
 514     p_sys->hacked_pic.i_planes = planes;
 515     p_sys->hacked_pic.format.i_chroma = fmt_out.i_chroma;
 516
 517     //calculate duration of conversion
 518     finish = clock();
 519     duration = (double)(finish - start) / CLOCKS_PER_SEC;
 520     if (p_sys->i_verbosity > VERB_WARN)
 521         msg_Dbg( p_vout, "VlcPictureToIplImageRgb took %2.4f seconds", duration );
 522 }
 523
 524 /*****************************************************************************
 525  * Render: displays previously rendered output
 526  *****************************************************************************
 527  * This function send the currently rendered image to the internal opencv
 528  * filter for processing.
 529  *****************************************************************************/
 530 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
 531 {
 532     picture_t *p_outpic = NULL;
 533     clock_t start, finish;
 534     double  duration;
 535
 536     while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
 537               == NULL )
 538     {
 539         if( !vlc_object_alive (p_vout) || p_vout->b_error )
 540         {   return; }
 541         msleep( VOUT_OUTMEM_SLEEP );
 542     }
 543
 544     vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
 545
 546     start = clock();
 547
 548     if (p_vout->p_sys->i_wrapper_output == VINPUT)  //output = input video
 549     {
 550         //This copy is a bit unfortunate but image_Convert can't write into an existing image so it is better to copy the
 551         //(say) 16bit YUV image here than a 32bit RGB image somehwere else.
 552         //It is also not that expensive in time.
 553         picture_Copy( p_outpic, p_pic );
 554         VlcPictureToIplImage( p_vout, p_pic);
 555         //pass the image to the internal opencv filter for processing
 556         if ((p_vout->p_sys->p_opencv) && (p_vout->p_sys->p_opencv->p_module))
 557             p_vout->p_sys->p_opencv->pf_video_filter( p_vout->p_sys->p_opencv, &(p_vout->p_sys->hacked_pic));
 558     }
 559     else    //output = processed video (NONE option not working yet)
 560     {
 561         VlcPictureToIplImage( p_vout, p_pic);
 562         //pass the image to the internal opencv filter for processing
 563         if ((p_vout->p_sys->p_opencv) && (p_vout->p_sys->p_opencv->p_module))
 564             p_vout->p_sys->p_opencv->pf_video_filter( p_vout->p_sys->p_opencv, &(p_vout->p_sys->hacked_pic));
 565         //copy the processed image into the output image
 566         if ((p_vout->p_sys->p_proc_image) && (p_vout->p_sys->p_proc_image->p_data))
 567             picture_Copy( p_outpic, p_vout->p_sys->p_proc_image );
 568     }
 569
 570     //calculate duration
 571     finish = clock();
 572     duration = (double)(finish - start) / CLOCKS_PER_SEC;
 573     if (p_vout->p_sys->i_verbosity > VERB_WARN)
 574         msg_Dbg( p_vout, "Render took %2.4f seconds", duration );
 575
 576     ReleaseImages(p_vout);
 577     p_outpic->date  = p_pic->date;
 578
 579     vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
 580     vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
 581 }
 582