git.sesse.net Git - vlc/blob - src/video_output/video_output.c

   1 /*****************************************************************************
   2  * video_output.c : video output thread
   3  * This module describes the programming interface for video output threads.
   4  * It includes functions allowing to open a new thread, send pictures to a
   5  * thread, and destroy a previously oppened video output thread.
   6  *****************************************************************************
   7  * Copyright (C) 2000-2001 VideoLAN
   8  * $Id: video_output.c,v 1.228 2003/06/28 21:18:58 fenrir Exp $
   9  *
  10  * Authors: Vincent Seguin <seguin@via.ecp.fr>
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  25  *****************************************************************************/
  26
  27 /*****************************************************************************
  28  * Preamble
  29  *****************************************************************************/
  30 #include <stdlib.h>                                                /* free() */
  31
  32 #include <vlc/vlc.h>
  33
  34 #ifdef HAVE_SYS_TIMES_H
  35 #   include <sys/times.h>
  36 #endif
  37
  38 #include "vlc_video.h"
  39 #include "video_output.h"
  40 #include <vlc/input.h>                 /* for input_thread_t and i_pts_delay */
  41
  42 #if defined( SYS_DARWIN )
  43 #include "darwin_specific.h"
  44 #endif
  45
  46 /*****************************************************************************
  47  * Local prototypes
  48  *****************************************************************************/
  49 static int      InitThread        ( vout_thread_t * );
  50 static void     RunThread         ( vout_thread_t * );
  51 static void     ErrorThread       ( vout_thread_t * );
  52 static void     EndThread         ( vout_thread_t * );
  53 static void     DestroyThread     ( vout_thread_t * );
  54
  55 static int      ReduceHeight      ( int );
  56 static int      BinaryLog         ( uint32_t );
  57 static void     MaskToShift       ( int *, int *, uint32_t );
  58 static void     InitWindowSize    ( vout_thread_t *, int *, int * );
  59
  60 /* Object variables callbacks */
  61 static int FullscreenCallback( vlc_object_t *, char const *,
  62                                vlc_value_t, vlc_value_t, void * );
  63 static int DeinterlaceCallback( vlc_object_t *, char const *,
  64                                 vlc_value_t, vlc_value_t, void * );
  65
  66 /*****************************************************************************
  67  * vout_Request: find a video output thread, create one, or destroy one.
  68  *****************************************************************************
  69  * This function looks for a video output thread matching the current
  70  * properties. If not found, it spawns a new one.
  71  *****************************************************************************/
  72 vout_thread_t * __vout_Request ( vlc_object_t *p_this, vout_thread_t *p_vout,
  73                                  unsigned int i_width, unsigned int i_height,
  74                                  vlc_fourcc_t i_chroma, unsigned int i_aspect )
  75 {
  76     if( !i_width || !i_height || !i_chroma )
  77     {
  78         /* Reattach video output to input before bailing out */
  79         if( p_vout )
  80         {
  81             vlc_object_t *p_input;
  82
  83             p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
  84
  85             if( p_input )
  86             {
  87                 vlc_object_detach( p_vout );
  88                 vlc_object_attach( p_vout, p_input );
  89
  90                 vlc_object_release( p_input );
  91             }
  92             else
  93             {
  94                 vlc_object_detach( p_vout );
  95                 /* vlc_object_release( p_vout ); */
  96                 vout_Destroy( p_vout );
  97             }
  98         }
  99         return NULL;
 100     }
 101
 102     /* If a video output was provided, lock it, otherwise look for one. */
 103     if( p_vout )
 104     {
 105         vlc_object_yield( p_vout );
 106     }
 107     else
 108     {
 109         p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD );
 110
 111         if( !p_vout )
 112         {
 113             vlc_object_t *p_input;
 114
 115             p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
 116             if( p_input )
 117             {
 118                 p_vout = vlc_object_find( p_input, VLC_OBJECT_VOUT,
 119                                           FIND_CHILD );
 120                 /* only first children of p_input for unused vout */
 121                 if( p_vout && p_vout->p_parent != p_input )
 122                 {
 123                     vlc_object_release( p_vout );
 124                     p_vout = NULL;
 125                 }
 126                 vlc_object_release( p_input );
 127             }
 128         }
 129     }
 130
 131     /* If we now have a video output, check it has the right properties */
 132     if( p_vout )
 133     {
 134         char *psz_filter_chain;
 135
 136         /* We don't directly check for the "filter" variable for obvious
 137          * performance reasons. */
 138         if( p_vout->b_filter_change )
 139         {
 140             psz_filter_chain = config_GetPsz( p_this, "filter" );
 141
 142             if( psz_filter_chain && !*psz_filter_chain )
 143             {
 144                 free( psz_filter_chain );
 145                 psz_filter_chain = NULL;
 146             }
 147             if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
 148             {
 149                 free( p_vout->psz_filter_chain );
 150                 p_vout->psz_filter_chain = NULL;
 151             }
 152
 153             if( ( !psz_filter_chain && !p_vout->psz_filter_chain ) ||
 154                 ( psz_filter_chain && p_vout->psz_filter_chain &&
 155                   !strcmp( psz_filter_chain, p_vout->psz_filter_chain ) ) )
 156             {
 157                 p_vout->b_filter_change = VLC_FALSE;
 158             }
 159
 160             if( psz_filter_chain ) free( psz_filter_chain );
 161         }
 162
 163         if( ( p_vout->render.i_width != i_width ) ||
 164             ( p_vout->render.i_height != i_height ) ||
 165             ( p_vout->render.i_chroma != i_chroma ) ||
 166             ( p_vout->render.i_aspect != i_aspect
 167                     && !p_vout->b_override_aspect ) ||
 168             p_vout->b_filter_change )
 169         {
 170             /* We are not interested in this format, close this vout */
 171             vlc_object_detach( p_vout );
 172             vlc_object_release( p_vout );
 173             vout_Destroy( p_vout );
 174             p_vout = NULL;
 175         }
 176         else
 177         {
 178             /* This video output is cool! Hijack it. */
 179             vlc_object_detach( p_vout );
 180             vlc_object_attach( p_vout, p_this );
 181             vlc_object_release( p_vout );
 182         }
 183     }
 184
 185     if( !p_vout )
 186     {
 187         msg_Dbg( p_this, "no usable vout present, spawning one" );
 188
 189         p_vout = vout_Create( p_this, i_width, i_height, i_chroma, i_aspect );
 190     }
 191
 192     return p_vout;
 193 }
 194
 195 /*****************************************************************************
 196  * vout_Create: creates a new video output thread
 197  *****************************************************************************
 198  * This function creates a new video output thread, and returns a pointer
 199  * to its description. On error, it returns NULL.
 200  *****************************************************************************/
 201 vout_thread_t * __vout_Create( vlc_object_t *p_parent,
 202                                unsigned int i_width, unsigned int i_height,
 203                                vlc_fourcc_t i_chroma, unsigned int i_aspect )
 204 {
 205     vout_thread_t  * p_vout;                            /* thread descriptor */
 206     input_thread_t * p_input_thread;
 207     int              i_index;                               /* loop variable */
 208     char           * psz_plugin;
 209     vlc_value_t      val, text;
 210
 211     /* Allocate descriptor */
 212     p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
 213     if( p_vout == NULL )
 214     {
 215         msg_Err( p_parent, "out of memory" );
 216         return NULL;
 217     }
 218
 219     var_Create( p_vout, "intf-change", VLC_VAR_BOOL );
 220     val.b_bool = VLC_TRUE;
 221     var_Set( p_vout, "intf-change", val );
 222
 223     p_vout->b_override_aspect = VLC_FALSE;
 224
 225     /* If the parent is not a VOUT object, that means we are at the start of
 226      * the video output pipe */
 227     if( p_parent->i_object_type != VLC_OBJECT_VOUT )
 228     {
 229         char *psz_aspect = config_GetPsz( p_parent, "aspect-ratio" );
 230
 231         /* Check whether the user tried to override aspect ratio */
 232         if( psz_aspect )
 233         {
 234             unsigned int i_new_aspect = i_aspect;
 235             char *psz_parser = strchr( psz_aspect, ':' );
 236
 237             if( psz_parser )
 238             {
 239                 *psz_parser++ = '\0';
 240                 i_new_aspect = atoi( psz_aspect ) * VOUT_ASPECT_FACTOR
 241                                                   / atoi( psz_parser );
 242             }
 243             else
 244             {
 245                 i_new_aspect = i_width * VOUT_ASPECT_FACTOR
 246                                        * atof( psz_aspect )
 247                                        / i_height;
 248             }
 249
 250             free( psz_aspect );
 251
 252             if( i_new_aspect && i_new_aspect != i_aspect )
 253             {
 254                 int i_pgcd = ReduceHeight( i_new_aspect );
 255
 256                 msg_Dbg( p_vout, "overriding source aspect ratio to %i:%i",
 257                          i_new_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
 258
 259                 i_aspect = i_new_aspect;
 260
 261                 p_vout->b_override_aspect = VLC_TRUE;
 262             }
 263         }
 264
 265         /* Look for the default filter configuration */
 266         p_vout->psz_filter_chain = config_GetPsz( p_parent, "filter" );
 267     }
 268     else
 269     {
 270         /* continue the parent's filter chain */
 271         char *psz_end;
 272
 273         psz_end = strchr( ((vout_thread_t *)p_parent)->psz_filter_chain, ':' );
 274         if( psz_end && *(psz_end+1) )
 275             p_vout->psz_filter_chain = strdup( psz_end+1 );
 276         else p_vout->psz_filter_chain = NULL;
 277     }
 278
 279     /* Choose the video output module */
 280     if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 281     {
 282         psz_plugin = config_GetPsz( p_parent, "vout" );
 283     }
 284     else
 285     {
 286         /* the filter chain is a string list of filters separated by double
 287          * colons */
 288         char *psz_end;
 289
 290         psz_end = strchr( p_vout->psz_filter_chain, ':' );
 291         if( psz_end )
 292             psz_plugin = strndup( p_vout->psz_filter_chain,
 293                                   psz_end - p_vout->psz_filter_chain );
 294         else psz_plugin = strdup( p_vout->psz_filter_chain );
 295     }
 296
 297     /* Initialize pictures and subpictures - translation tables and functions
 298      * will be initialized later in InitThread */
 299     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES; i_index++)
 300     {
 301         p_vout->p_picture[i_index].pf_lock = NULL;
 302         p_vout->p_picture[i_index].pf_unlock = NULL;
 303         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 304         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 305     }
 306
 307     for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
 308     {
 309         p_vout->p_subpicture[i_index].i_status = FREE_SUBPICTURE;
 310         p_vout->p_subpicture[i_index].i_type   = EMPTY_SUBPICTURE;
 311     }
 312
 313     /* No images in the heap */
 314     p_vout->i_heap_size = 0;
 315
 316     /* Initialize the rendering heap */
 317     I_RENDERPICTURES = 0;
 318     p_vout->render.i_width    = i_width;
 319     p_vout->render.i_height   = i_height;
 320     p_vout->render.i_chroma   = i_chroma;
 321     p_vout->render.i_aspect   = i_aspect;
 322
 323     p_vout->render.i_rmask    = 0;
 324     p_vout->render.i_gmask    = 0;
 325     p_vout->render.i_bmask    = 0;
 326
 327     p_vout->render.i_last_used_pic = -1;
 328     p_vout->render.b_allow_modify_pics = 1;
 329
 330     /* Zero the output heap */
 331     I_OUTPUTPICTURES = 0;
 332     p_vout->output.i_width    = 0;
 333     p_vout->output.i_height   = 0;
 334     p_vout->output.i_chroma   = 0;
 335     p_vout->output.i_aspect   = 0;
 336
 337     p_vout->output.i_rmask    = 0;
 338     p_vout->output.i_gmask    = 0;
 339     p_vout->output.i_bmask    = 0;
 340
 341     /* Initialize misc stuff */
 342     p_vout->i_changes    = 0;
 343     p_vout->f_gamma      = 0;
 344     p_vout->b_grayscale  = 0;
 345     p_vout->b_info       = 0;
 346     p_vout->b_interface  = 0;
 347     p_vout->b_scale      = 1;
 348     p_vout->b_fullscreen = 0;
 349     p_vout->render_time  = 10;
 350     p_vout->c_fps_samples = 0;
 351     p_vout->b_filter_change = 0;
 352
 353     /* Mouse coordinates */
 354     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 355     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 356     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 357     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 358     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 359     var_Create( p_vout, "key-pressed", VLC_VAR_STRING );
 360
 361     /* Initialize the dimensions of the video window */
 362     InitWindowSize( p_vout, &p_vout->i_window_width,
 363                     &p_vout->i_window_height );
 364
 365     /* Create thread and set locks */
 366     vlc_mutex_init( p_vout, &p_vout->picture_lock );
 367     vlc_mutex_init( p_vout, &p_vout->subpicture_lock );
 368     vlc_mutex_init( p_vout, &p_vout->change_lock );
 369
 370     vlc_object_attach( p_vout, p_parent );
 371
 372     p_vout->p_module = module_Need( p_vout,
 373                            ( p_vout->psz_filter_chain &&
 374                                *p_vout->psz_filter_chain ) ?
 375                            "video filter" : "video output",
 376                            psz_plugin );
 377
 378     if( psz_plugin ) free( psz_plugin );
 379     if( p_vout->p_module == NULL )
 380     {
 381         msg_Err( p_vout, "no suitable vout module" );
 382         vlc_object_destroy( p_vout );
 383         return NULL;
 384     }
 385
 386     /* Create a few object variables for interface interaction */
 387     var_Create( p_vout, "fullscreen", VLC_VAR_BOOL );
 388     text.psz_string = _("Fullscreen");
 389     var_Change( p_vout, "fullscreen", VLC_VAR_SETTEXT, &text, NULL );
 390     var_Change( p_vout, "fullscreen", VLC_VAR_INHERITVALUE, &val, NULL );
 391     if( val.b_bool )
 392     {
 393         /* user requested fullscreen */
 394         p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 395     }
 396     var_AddCallback( p_vout, "fullscreen", FullscreenCallback, NULL );
 397
 398     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
 399     text.psz_string = _("Deinterlace");
 400     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
 401     val.psz_string = ""; text.psz_string = _("Disable");
 402     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 403     val.psz_string = "discard"; text.psz_string = _("Discard");
 404     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 405     val.psz_string = "blend"; text.psz_string = _("Blend");
 406     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 407     val.psz_string = "mean"; text.psz_string = _("Mean");
 408     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 409     val.psz_string = "bob"; text.psz_string = _("Bob");
 410     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 411     val.psz_string = "linear"; text.psz_string = _("Linear");
 412     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 413     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 414     {
 415         var_Set( p_vout, "deinterlace", val );
 416     }
 417     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 418
 419     /* Calculate delay created by internal caching */
 420     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 421                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 422     if( p_input_thread )
 423     {
 424         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 425         vlc_object_release( p_input_thread );
 426     }
 427     else
 428     {
 429         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 430     }
 431
 432     if( vlc_thread_create( p_vout, "video output", RunThread,
 433                            VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) )
 434     {
 435         msg_Err( p_vout, "out of memory" );
 436         module_Unneed( p_vout, p_vout->p_module );
 437         vlc_object_destroy( p_vout );
 438         return NULL;
 439     }
 440
 441     return p_vout;
 442 }
 443
 444 /*****************************************************************************
 445  * vout_Destroy: destroys a previously created video output
 446  *****************************************************************************
 447  * Destroy a terminated thread.
 448  * The function will request a destruction of the specified thread. If pi_error
 449  * is NULL, it will return once the thread is destroyed. Else, it will be
 450  * update using one of the THREAD_* constants.
 451  *****************************************************************************/
 452 void vout_Destroy( vout_thread_t *p_vout )
 453 {
 454     vlc_object_t *p_playlist;
 455
 456     /* Request thread destruction */
 457     p_vout->b_die = VLC_TRUE;
 458     vlc_thread_join( p_vout );
 459
 460     var_Destroy( p_vout, "intf-change" );
 461
 462     p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
 463                                   FIND_ANYWHERE );
 464
 465     /* Free structure */
 466     vlc_object_destroy( p_vout );
 467
 468     /* If it was the last vout, tell the interface to show up */
 469     if( p_playlist != NULL )
 470     {
 471         vout_thread_t *p_another_vout = vlc_object_find( p_playlist,
 472                                             VLC_OBJECT_VOUT, FIND_ANYWHERE );
 473         if( p_another_vout == NULL )
 474         {
 475             vlc_value_t val;
 476             val.b_bool = VLC_TRUE;
 477             var_Set( p_playlist, "intf-show", val );
 478         }
 479         else
 480         {
 481             vlc_object_release( p_another_vout );
 482         }
 483         vlc_object_release( p_playlist );
 484     }
 485 }
 486
 487 /*****************************************************************************
 488  * InitThread: initialize video output thread
 489  *****************************************************************************
 490  * This function is called from RunThread and performs the second step of the
 491  * initialization. It returns 0 on success. Note that the thread's flag are not
 492  * modified inside this function.
 493  *****************************************************************************/
 494 static int InitThread( vout_thread_t *p_vout )
 495 {
 496     int i, i_pgcd;
 497
 498     vlc_mutex_lock( &p_vout->change_lock );
 499
 500 #ifdef STATS
 501     p_vout->c_loops = 0;
 502 #endif
 503
 504     /* Initialize output method, it allocates direct buffers for us */
 505     if( p_vout->pf_init( p_vout ) )
 506     {
 507         vlc_mutex_unlock( &p_vout->change_lock );
 508         return VLC_EGENERIC;
 509     }
 510
 511     if( !I_OUTPUTPICTURES )
 512     {
 513         msg_Err( p_vout, "plugin was unable to allocate at least "
 514                          "one direct buffer" );
 515         p_vout->pf_end( p_vout );
 516         vlc_mutex_unlock( &p_vout->change_lock );
 517         return VLC_EGENERIC;
 518     }
 519
 520     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 521     {
 522         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 523                          "our internal buffers must have overflown." );
 524         p_vout->pf_end( p_vout );
 525         vlc_mutex_unlock( &p_vout->change_lock );
 526         return VLC_EGENERIC;
 527     }
 528
 529     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 530
 531 #if 0
 532     if( !p_vout->psz_filter_chain )
 533     {
 534         char *psz_aspect = config_GetPsz( p_vout, "pixel-ratio" );
 535
 536         if( psz_aspect )
 537         {
 538             int i_new_aspect = p_vout->output.i_width * VOUT_ASPECT_FACTOR
 539                                                       * atof( psz_aspect )
 540                                                       / p_vout->output.i_height;
 541             free( psz_aspect );
 542
 543             if( i_new_aspect && i_new_aspect != p_vout->output.i_aspect )
 544             {
 545                 int i_pgcd = ReduceHeight( i_new_aspect );
 546                 msg_Dbg( p_vout, "output ratio forced to %i:%i\n",
 547                          i_new_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
 548                 p_vout->output.i_aspect = i_new_aspect;
 549             }
 550         }
 551     }
 552 #endif
 553
 554     i_pgcd = ReduceHeight( p_vout->render.i_aspect );
 555     msg_Dbg( p_vout,
 556              "picture in %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i",
 557              p_vout->render.i_width, p_vout->render.i_height,
 558              p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma,
 559              p_vout->render.i_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
 560
 561     i_pgcd = ReduceHeight( p_vout->output.i_aspect );
 562     msg_Dbg( p_vout,
 563              "picture out %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i",
 564              p_vout->output.i_width, p_vout->output.i_height,
 565              p_vout->output.i_chroma, (char*)&p_vout->output.i_chroma,
 566              p_vout->output.i_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
 567
 568     /* Calculate shifts from system-updated masks */
 569     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 570                  p_vout->output.i_rmask );
 571     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 572                  p_vout->output.i_gmask );
 573     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 574                  p_vout->output.i_bmask );
 575
 576     /* Check whether we managed to create direct buffers similar to
 577      * the render buffers, ie same size and chroma */
 578     if( ( p_vout->output.i_width == p_vout->render.i_width )
 579      && ( p_vout->output.i_height == p_vout->render.i_height )
 580      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 581     {
 582         /* Cool ! We have direct buffers, we can ask the decoder to
 583          * directly decode into them ! Map the first render buffers to
 584          * the first direct buffers, but keep the first direct buffer
 585          * for memcpy operations */
 586         p_vout->b_direct = 1;
 587
 588         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 589         {
 590             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 591                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 592                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 593             {
 594                 /* We have enough direct buffers so there's no need to
 595                  * try to use system memory buffers. */
 596                 break;
 597             }
 598             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 599             I_RENDERPICTURES++;
 600         }
 601
 602         msg_Dbg( p_vout, "direct render, mapping "
 603                  "render pictures 0-%i to system pictures 1-%i",
 604                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 605     }
 606     else
 607     {
 608         /* Rats... Something is wrong here, we could not find an output
 609          * plugin able to directly render what we decode. See if we can
 610          * find a chroma plugin to do the conversion */
 611         p_vout->b_direct = 0;
 612
 613         /* Choose the best module */
 614         p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL );
 615
 616         if( p_vout->chroma.p_module == NULL )
 617         {
 618             msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
 619                      (char*)&p_vout->render.i_chroma,
 620                      (char*)&p_vout->output.i_chroma );
 621             p_vout->pf_end( p_vout );
 622             vlc_mutex_unlock( &p_vout->change_lock );
 623             return VLC_EGENERIC;
 624         }
 625
 626         msg_Dbg( p_vout, "indirect render, mapping "
 627                  "render pictures 0-%i to system pictures %i-%i",
 628                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 629                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 630
 631         /* Append render buffers after the direct buffers */
 632         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 633         {
 634             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 635             I_RENDERPICTURES++;
 636
 637             /* Check if we have enough render pictures */
 638             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 639                 break;
 640         }
 641     }
 642
 643     /* Link pictures back to their heap */
 644     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 645     {
 646         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 647     }
 648
 649     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 650     {
 651         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 652     }
 653
 654 /* XXX XXX mark thread ready */
 655     return VLC_SUCCESS;
 656 }
 657
 658 /*****************************************************************************
 659  * RunThread: video output thread
 660  *****************************************************************************
 661  * Video output thread. This function does only returns when the thread is
 662  * terminated. It handles the pictures arriving in the video heap and the
 663  * display device events.
 664  *****************************************************************************/
 665 static void RunThread( vout_thread_t *p_vout)
 666 {
 667     int             i_index;                                /* index in heap */
 668     int             i_idle_loops = 0;  /* loops without displaying a picture */
 669     mtime_t         current_date;                            /* current date */
 670     mtime_t         display_date;                            /* display date */
 671
 672     picture_t *     p_picture;                            /* picture pointer */
 673     picture_t *     p_last_picture = NULL;                   /* last picture */
 674     picture_t *     p_directbuffer;              /* direct buffer to display */
 675
 676     subpicture_t *  p_subpic;                          /* subpicture pointer */
 677
 678     /*
 679      * Initialize thread
 680      */
 681     p_vout->b_error = InitThread( p_vout );
 682
 683     /* signal the creation of the vout */
 684     vlc_thread_ready( p_vout );
 685
 686     if( p_vout->b_error )
 687     {
 688         /* Destroy thread structures allocated by Create and InitThread */
 689         DestroyThread( p_vout );
 690         return;
 691     }
 692
 693     /*
 694      * Main loop - it is not executed if an error occured during
 695      * initialization
 696      */
 697     while( (!p_vout->b_die) && (!p_vout->b_error) )
 698     {
 699         /* Initialize loop variables */
 700         p_picture = NULL;
 701         display_date = 0;
 702         current_date = mdate();
 703
 704 #if 0
 705         p_vout->c_loops++;
 706         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 707         {
 708             msg_Dbg( p_vout, "picture heap: %d/%d",
 709                      I_RENDERPICTURES, p_vout->i_heap_size );
 710         }
 711 #endif
 712
 713         /*
 714          * Find the picture to display (the one with the earliest date).
 715          * This operation does not need lock, since only READY_PICTUREs
 716          * are handled. */
 717         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 718         {
 719             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 720                 && ( (p_picture == NULL) ||
 721                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 722             {
 723                 p_picture = PP_RENDERPICTURE[i_index];
 724                 display_date = p_picture->date;
 725             }
 726         }
 727
 728         if( p_picture )
 729         {
 730             /* If we met the last picture, parse again to see whether there is
 731              * a more appropriate one. */
 732             if( p_picture == p_last_picture )
 733             {
 734                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 735                 {
 736                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 737                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 738                         && ((p_picture == p_last_picture) ||
 739                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 740                     {
 741                         p_picture = PP_RENDERPICTURE[i_index];
 742                         display_date = p_picture->date;
 743                     }
 744                 }
 745             }
 746
 747             /* If we found better than the last picture, destroy it */
 748             if( p_last_picture && p_picture != p_last_picture )
 749             {
 750                 vlc_mutex_lock( &p_vout->picture_lock );
 751                 if( p_last_picture->i_refcount )
 752                 {
 753                     p_last_picture->i_status = DISPLAYED_PICTURE;
 754                 }
 755                 else
 756                 {
 757                     p_last_picture->i_status = DESTROYED_PICTURE;
 758                     p_vout->i_heap_size--;
 759                 }
 760                 vlc_mutex_unlock( &p_vout->picture_lock );
 761                 p_last_picture = NULL;
 762             }
 763
 764             /* Compute FPS rate */
 765             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 766                 = display_date;
 767
 768             if( !p_picture->b_force &&
 769                 p_picture != p_last_picture &&
 770                 display_date < current_date + p_vout->render_time )
 771             {
 772                 /* Picture is late: it will be destroyed and the thread
 773                  * will directly choose the next picture */
 774                 vlc_mutex_lock( &p_vout->picture_lock );
 775                 if( p_picture->i_refcount )
 776                 {
 777                     /* Pretend we displayed the picture, but don't destroy
 778                      * it since the decoder might still need it. */
 779                     p_picture->i_status = DISPLAYED_PICTURE;
 780                 }
 781                 else
 782                 {
 783                     /* Destroy the picture without displaying it */
 784                     p_picture->i_status = DESTROYED_PICTURE;
 785                     p_vout->i_heap_size--;
 786                 }
 787                 msg_Warn( p_vout, "late picture skipped ("I64Fd")",
 788                                   current_date - display_date );
 789                 vlc_mutex_unlock( &p_vout->picture_lock );
 790
 791                 continue;
 792             }
 793
 794             if( display_date >
 795                 current_date + p_vout->i_pts_delay +  VOUT_BOGUS_DELAY )
 796             {
 797                 /* Picture is waaay too early: it will be destroyed */
 798                 vlc_mutex_lock( &p_vout->picture_lock );
 799                 if( p_picture->i_refcount )
 800                 {
 801                     /* Pretend we displayed the picture, but don't destroy
 802                      * it since the decoder might still need it. */
 803                     p_picture->i_status = DISPLAYED_PICTURE;
 804                 }
 805                 else
 806                 {
 807                     /* Destroy the picture without displaying it */
 808                     p_picture->i_status = DESTROYED_PICTURE;
 809                     p_vout->i_heap_size--;
 810                 }
 811                 msg_Warn( p_vout, "vout warning: early picture skipped "
 812                           "("I64Fd")", display_date - current_date
 813                           - p_vout->i_pts_delay );
 814                 vlc_mutex_unlock( &p_vout->picture_lock );
 815
 816                 continue;
 817             }
 818
 819             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 820             {
 821                 /* A picture is ready to be rendered, but its rendering date
 822                  * is far from the current one so the thread will perform an
 823                  * empty loop as if no picture were found. The picture state
 824                  * is unchanged */
 825                 p_picture    = NULL;
 826                 display_date = 0;
 827             }
 828             else if( p_picture == p_last_picture )
 829             {
 830                 /* We are asked to repeat the previous picture, but we first
 831                  * wait for a couple of idle loops */
 832                 if( i_idle_loops < 4 )
 833                 {
 834                     p_picture    = NULL;
 835                     display_date = 0;
 836                 }
 837                 else
 838                 {
 839                     /* We set the display date to something high, otherwise
 840                      * we'll have lots of problems with late pictures */
 841                     display_date = current_date + p_vout->render_time;
 842                 }
 843             }
 844         }
 845
 846         if( p_picture == NULL )
 847         {
 848             i_idle_loops++;
 849         }
 850
 851         /*
 852          * Check for subpictures to display
 853          */
 854         p_subpic = vout_SortSubPictures( p_vout, display_date );
 855
 856         /*
 857          * Perform rendering
 858          */
 859         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
 860
 861         /*
 862          * Call the plugin-specific rendering method if there is one
 863          */
 864         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
 865         {
 866             /* Render the direct buffer returned by vout_RenderPicture */
 867             p_vout->pf_render( p_vout, p_directbuffer );
 868         }
 869
 870         /*
 871          * Sleep, wake up
 872          */
 873         if( display_date != 0 && p_directbuffer != NULL )
 874         {
 875             /* Store render time using a sliding mean */
 876             p_vout->render_time += mdate() - current_date;
 877             p_vout->render_time >>= 1;
 878         }
 879
 880         /* Give back change lock */
 881         vlc_mutex_unlock( &p_vout->change_lock );
 882
 883         /* Sleep a while or until a given date */
 884         if( display_date != 0 )
 885         {
 886             mwait( display_date - VOUT_MWAIT_TOLERANCE );
 887         }
 888         else
 889         {
 890             msleep( VOUT_IDLE_SLEEP );
 891         }
 892
 893         /* On awakening, take back lock and send immediately picture
 894          * to display. */
 895         vlc_mutex_lock( &p_vout->change_lock );
 896
 897         /*
 898          * Display the previously rendered picture
 899          */
 900         if( p_picture != NULL && p_directbuffer != NULL )
 901         {
 902             /* Display the direct buffer returned by vout_RenderPicture */
 903             if( p_vout->pf_display )
 904             {
 905                 p_vout->pf_display( p_vout, p_directbuffer );
 906             }
 907
 908             /* Reinitialize idle loop count */
 909             i_idle_loops = 0;
 910
 911             /* Tell the vout this was the last picture and that it does not
 912              * need to be forced anymore. */
 913             p_last_picture = p_picture;
 914             p_last_picture->b_force = 0;
 915         }
 916
 917         /*
 918          * Check events and manage thread
 919          */
 920         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
 921         {
 922             /* A fatal error occured, and the thread must terminate
 923              * immediately, without displaying anything - setting b_error to 1
 924              * causes the immediate end of the main while() loop. */
 925             p_vout->b_error = 1;
 926         }
 927
 928         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 929         {
 930             /* this must only happen when the vout plugin is incapable of
 931              * rescaling the picture itself. In this case we need to destroy
 932              * the current picture buffers and recreate new ones with the right
 933              * dimensions */
 934             int i;
 935
 936             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 937
 938             p_vout->pf_end( p_vout );
 939             for( i = 0; i < I_OUTPUTPICTURES; i++ )
 940                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
 941
 942             I_OUTPUTPICTURES = 0;
 943             if( p_vout->pf_init( p_vout ) )
 944             {
 945                 msg_Err( p_vout, "cannot resize display" );
 946                 /* FIXME: pf_end will be called again in EndThread() */
 947                 p_vout->b_error = 1;
 948             }
 949
 950             /* Need to reinitialise the chroma plugin */
 951             if( p_vout->chroma.p_module->pf_deactivate )
 952                 p_vout->chroma.p_module->pf_deactivate( VLC_OBJECT(p_vout) );
 953             p_vout->chroma.p_module->pf_activate( VLC_OBJECT(p_vout) );
 954         }
 955     }
 956
 957     /*
 958      * Error loop - wait until the thread destruction is requested
 959      */
 960     if( p_vout->b_error )
 961     {
 962         ErrorThread( p_vout );
 963     }
 964
 965     /* End of thread */
 966     EndThread( p_vout );
 967
 968     /* Destroy thread structures allocated by CreateThread */
 969     DestroyThread( p_vout );
 970 }
 971
 972 /*****************************************************************************
 973  * ErrorThread: RunThread() error loop
 974  *****************************************************************************
 975  * This function is called when an error occured during thread main's loop. The
 976  * thread can still receive feed, but must be ready to terminate as soon as
 977  * possible.
 978  *****************************************************************************/
 979 static void ErrorThread( vout_thread_t *p_vout )
 980 {
 981     /* Wait until a `die' order */
 982     while( !p_vout->b_die )
 983     {
 984         /* Sleep a while */
 985         msleep( VOUT_IDLE_SLEEP );
 986     }
 987 }
 988
 989 /*****************************************************************************
 990  * EndThread: thread destruction
 991  *****************************************************************************
 992  * This function is called when the thread ends after a sucessful
 993  * initialization. It frees all ressources allocated by InitThread.
 994  *****************************************************************************/
 995 static void EndThread( vout_thread_t *p_vout )
 996 {
 997     int     i_index;                                        /* index in heap */
 998
 999 #ifdef STATS
1000     {
1001         struct tms cpu_usage;
1002         times( &cpu_usage );
1003
1004         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1005                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1006     }
1007 #endif
1008
1009     if( !p_vout->b_direct )
1010     {
1011         module_Unneed( p_vout, p_vout->chroma.p_module );
1012     }
1013
1014     /* Destroy all remaining pictures */
1015     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES; i_index++ )
1016     {
1017         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1018         {
1019             free( p_vout->p_picture[i_index].p_data_orig );
1020         }
1021     }
1022
1023     /* Destroy all remaining subpictures */
1024     for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1025     {
1026         if( p_vout->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
1027         {
1028             vout_DestroySubPicture( p_vout,
1029                                     &p_vout->p_subpicture[i_index] );
1030         }
1031     }
1032
1033     /* Destroy translation tables */
1034     p_vout->pf_end( p_vout );
1035
1036     /* Release the change lock */
1037     vlc_mutex_unlock( &p_vout->change_lock );
1038 }
1039
1040 /*****************************************************************************
1041  * DestroyThread: thread destruction
1042  *****************************************************************************
1043  * This function is called when the thread ends. It frees all ressources
1044  * allocated by CreateThread. Status is available at this stage.
1045  *****************************************************************************/
1046 static void DestroyThread( vout_thread_t *p_vout )
1047 {
1048     /* Destroy the locks */
1049     vlc_mutex_destroy( &p_vout->picture_lock );
1050     vlc_mutex_destroy( &p_vout->subpicture_lock );
1051     vlc_mutex_destroy( &p_vout->change_lock );
1052
1053     /* Release the module */
1054     module_Unneed( p_vout, p_vout->p_module );
1055 }
1056
1057 /* following functions are local */
1058
1059 static int ReduceHeight( int i_ratio )
1060 {
1061     int i_dummy = VOUT_ASPECT_FACTOR;
1062     int i_pgcd  = 1;
1063
1064     if( !i_ratio )
1065     {
1066         return i_pgcd;
1067     }
1068
1069     /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1070     while( !(i_ratio & 1) && !(i_dummy & 1) )
1071     {
1072         i_ratio >>= 1;
1073         i_dummy >>= 1;
1074         i_pgcd  <<= 1;
1075     }
1076
1077     while( !(i_ratio % 3) && !(i_dummy % 3) )
1078     {
1079         i_ratio /= 3;
1080         i_dummy /= 3;
1081         i_pgcd  *= 3;
1082     }
1083
1084     while( !(i_ratio % 5) && !(i_dummy % 5) )
1085     {
1086         i_ratio /= 5;
1087         i_dummy /= 5;
1088         i_pgcd  *= 5;
1089     }
1090
1091     return i_pgcd;
1092 }
1093
1094 /*****************************************************************************
1095  * BinaryLog: computes the base 2 log of a binary value
1096  *****************************************************************************
1097  * This functions is used by MaskToShift, to get a bit index from a binary
1098  * value.
1099  *****************************************************************************/
1100 static int BinaryLog( uint32_t i )
1101 {
1102     int i_log = 0;
1103
1104     if( i == 0 ) return -31337;
1105
1106     if( i & 0xffff0000 ) i_log += 16;
1107     if( i & 0xff00ff00 ) i_log += 8;
1108     if( i & 0xf0f0f0f0 ) i_log += 4;
1109     if( i & 0xcccccccc ) i_log += 2;
1110     if( i & 0xaaaaaaaa ) i_log += 1;
1111
1112     return i_log;
1113 }
1114
1115 /*****************************************************************************
1116  * MaskToShift: transform a color mask into right and left shifts
1117  *****************************************************************************
1118  * This function is used for obtaining color shifts from masks.
1119  *****************************************************************************/
1120 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1121 {
1122     uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
1123
1124     if( !i_mask )
1125     {
1126         *pi_left = *pi_right = 0;
1127         return;
1128     }
1129
1130     /* Get bits */
1131     i_low =  i_mask & (- (int32_t)i_mask);          /* lower bit of the mask */
1132     i_high = i_mask + i_low;                       /* higher bit of the mask */
1133
1134     /* Transform bits into an index */
1135     i_low =  BinaryLog (i_low);
1136     i_high = BinaryLog (i_high);
1137
1138     /* Update pointers and return */
1139     *pi_left =   i_low;
1140     *pi_right = (8 - i_high + i_low);
1141 }
1142
1143 /*****************************************************************************
1144  * InitWindowSize: find the initial dimensions the video window should have.
1145  *****************************************************************************
1146  * This function will check the "width", "height" and "zoom" config options and
1147  * will calculate the size that the video window should have.
1148  *****************************************************************************/
1149 static void InitWindowSize( vout_thread_t *p_vout, int *pi_width,
1150                             int *pi_height )
1151 {
1152     int i_width, i_height;
1153     uint64_t ll_zoom;
1154
1155 #define FP_FACTOR 1000                             /* our fixed point factor */
1156
1157     i_width = config_GetInt( p_vout, "width" );
1158     i_height = config_GetInt( p_vout, "height" );
1159     ll_zoom = (uint64_t)( FP_FACTOR * config_GetFloat( p_vout, "zoom" ) );
1160
1161     if( i_width > 0 && i_height > 0)
1162     {
1163         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
1164         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
1165         return;
1166     }
1167     else if( i_width > 0 )
1168     {
1169         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
1170         *pi_height = (int)( i_width * ll_zoom * VOUT_ASPECT_FACTOR /
1171                             p_vout->render.i_aspect / FP_FACTOR );
1172         return;
1173     }
1174     else if( i_height > 0 )
1175     {
1176         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
1177         *pi_width = (int)( i_height * ll_zoom * p_vout->render.i_aspect /
1178                            VOUT_ASPECT_FACTOR / FP_FACTOR );
1179         return;
1180     }
1181
1182     if( p_vout->render.i_height * p_vout->render.i_aspect
1183         >= p_vout->render.i_width * VOUT_ASPECT_FACTOR )
1184     {
1185         *pi_width = (int)( p_vout->render.i_height * ll_zoom
1186           * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR / FP_FACTOR );
1187         *pi_height = (int)( p_vout->render.i_height * ll_zoom / FP_FACTOR );
1188     }
1189     else
1190     {
1191         *pi_width = (int)( p_vout->render.i_width * ll_zoom / FP_FACTOR );
1192         *pi_height = (int)( p_vout->render.i_width * ll_zoom
1193           * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect / FP_FACTOR );
1194     }
1195
1196 #undef FP_FACTOR
1197 }
1198
1199 /*****************************************************************************
1200  * vout_VarCallback: generic callback for intf variables
1201  *****************************************************************************/
1202 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1203                       vlc_value_t old_value, vlc_value_t new_value,
1204                       void * unused )
1205 {
1206     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1207     vlc_value_t val;
1208     val.b_bool = VLC_TRUE;
1209     var_Set( p_vout, "intf-change", val );
1210     return VLC_SUCCESS;
1211 }
1212
1213 /*****************************************************************************
1214  * object variables callbacks: a bunch of object variables are used by the
1215  * interfaces to interact with the vout.
1216  *****************************************************************************/
1217 static int FullscreenCallback( vlc_object_t *p_this, char const *psz_cmd,
1218                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1219 {
1220     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1221     input_thread_t *p_input;
1222     vlc_value_t val;
1223
1224     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
1225
1226     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1227                                                  FIND_PARENT );
1228     if( p_input )
1229     {
1230         /* Modify input as well because the vout might have to be restarted */
1231         var_Create( p_input, "fullscreen", VLC_VAR_BOOL );
1232         var_Set( p_input, "fullscreen", newval );
1233
1234         vlc_object_release( p_input );
1235     }
1236
1237     val.b_bool = VLC_TRUE;
1238     var_Set( p_vout, "intf-change", val );
1239     return VLC_SUCCESS;
1240 }
1241
1242 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1243                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1244 {
1245     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1246     input_thread_t *p_input;
1247     vlc_value_t val;
1248
1249     char *psz_mode = newval.psz_string;
1250     char *psz_filter;
1251     unsigned int  i;
1252
1253     psz_filter = config_GetPsz( p_vout, "filter" );
1254
1255     if( !psz_mode || !*psz_mode )
1256     {
1257         config_PutPsz( p_vout, "filter", "" );
1258     }
1259     else
1260     {
1261         if( !psz_filter || !*psz_filter )
1262         {
1263             config_PutPsz( p_vout, "filter", "deinterlace" );
1264         }
1265         else
1266         {
1267             if( strstr( psz_filter, "deinterlace" ) == NULL )
1268             {
1269                 psz_filter = realloc( psz_filter, strlen( psz_filter ) + 20 );
1270                 strcat( psz_filter, ",deinterlace" );
1271             }
1272             config_PutPsz( p_vout, "filter", psz_filter );
1273         }
1274     }
1275
1276     if( psz_filter ) free( psz_filter );
1277
1278
1279     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1280                                                  FIND_PARENT );
1281     if( !p_input ) return VLC_EGENERIC;
1282
1283     if( psz_mode && *psz_mode )
1284     {
1285         val.psz_string = psz_mode;
1286         var_Set( p_vout, "deinterlace-mode", val );
1287         /* Modify input as well because the vout might have to be restarted */
1288         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1289         var_Set( p_input, "deinterlace-mode", val );
1290     }
1291
1292     /* now restart all video streams */
1293     vlc_mutex_lock( &p_input->stream.stream_lock );
1294
1295     p_vout->b_filter_change = VLC_TRUE;
1296
1297 #define ES p_input->stream.pp_es[i]
1298
1299     for( i = 0 ; i < p_input->stream.i_es_number ; i++ )
1300     {
1301         if( ( ES->i_cat == VIDEO_ES ) && ES->p_decoder_fifo != NULL )
1302         {
1303             input_UnselectES( p_input, ES );
1304             input_SelectES( p_input, ES );
1305         }
1306 #undef ES
1307     }
1308     vlc_mutex_unlock( &p_input->stream.stream_lock );
1309
1310     vlc_object_release( p_input );
1311
1312     val.b_bool = VLC_TRUE;
1313     var_Set( p_vout, "intf-change", val );
1314     return VLC_SUCCESS;
1315 }