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

   1 /*****************************************************************************
   2  * video_output.c : video output thread
   3  *
   4  * This module describes the programming interface for video output threads.
   5  * It includes functions allowing to open a new thread, send pictures to a
   6  * thread, and destroy a previously oppened video output thread.
   7  *****************************************************************************
   8  * Copyright (C) 2000-2004 VideoLAN
   9  * $Id$
  10  *
  11  * Authors: Vincent Seguin <seguin@via.ecp.fr>
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  26  *****************************************************************************/
  27
  28 /*****************************************************************************
  29  * Preamble
  30  *****************************************************************************/
  31 #include <stdlib.h>                                                /* free() */
  32
  33 #include <vlc/vlc.h>
  34
  35 #ifdef HAVE_SYS_TIMES_H
  36 #   include <sys/times.h>
  37 #endif
  38
  39 #include "vlc_video.h"
  40 #include "video_output.h"
  41 #include "vlc_spu.h"
  42 #include <vlc/input.h>                 /* for input_thread_t and i_pts_delay */
  43
  44 #if defined( SYS_DARWIN )
  45 #include "darwin_specific.h"
  46 #endif
  47
  48 /*****************************************************************************
  49  * Local prototypes
  50  *****************************************************************************/
  51 static int      InitThread        ( vout_thread_t * );
  52 static void     RunThread         ( vout_thread_t * );
  53 static void     ErrorThread       ( vout_thread_t * );
  54 static void     EndThread         ( vout_thread_t * );
  55 static void     DestroyThread     ( vout_thread_t * );
  56
  57 static void     AspectRatio       ( int, int *, int * );
  58 static int      BinaryLog         ( uint32_t );
  59 static void     MaskToShift       ( int *, int *, uint32_t );
  60 static void     InitWindowSize    ( vout_thread_t *, int *, int * );
  61
  62 /* Object variables callbacks */
  63 static int DeinterlaceCallback( vlc_object_t *, char const *,
  64                                 vlc_value_t, vlc_value_t, void * );
  65 static int FilterCallback( vlc_object_t *, char const *,
  66                            vlc_value_t, vlc_value_t, void * );
  67
  68 /*****************************************************************************
  69  * vout_Request: find a video output thread, create one, or destroy one.
  70  *****************************************************************************
  71  * This function looks for a video output thread matching the current
  72  * properties. If not found, it spawns a new one.
  73  *****************************************************************************/
  74 vout_thread_t * __vout_Request ( vlc_object_t *p_this, vout_thread_t *p_vout,
  75                                  unsigned int i_width, unsigned int i_height,
  76                                  vlc_fourcc_t i_chroma, unsigned int i_aspect )
  77 {
  78     if( !i_width || !i_height || !i_chroma )
  79     {
  80         /* Reattach video output to input before bailing out */
  81         if( p_vout )
  82         {
  83             vlc_object_t *p_playlist;
  84
  85             p_playlist = vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
  86                                           FIND_ANYWHERE );
  87
  88             if( p_playlist )
  89             {
  90                 spu_Attach( p_vout->p_spu, p_this, VLC_FALSE );
  91                 vlc_object_detach( p_vout );
  92                 vlc_object_attach( p_vout, p_playlist );
  93
  94                 vlc_object_release( p_playlist );
  95             }
  96             else
  97             {
  98                 msg_Dbg( p_this, "cannot find playlist, destroying vout" );
  99                 vlc_object_detach( p_vout );
 100                 vout_Destroy( p_vout );
 101             }
 102         }
 103         return NULL;
 104     }
 105
 106     /* If a video output was provided, lock it, otherwise look for one. */
 107     if( p_vout )
 108     {
 109         vlc_object_yield( p_vout );
 110     }
 111     else
 112     {
 113         p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD );
 114
 115         if( !p_vout )
 116         {
 117             vlc_object_t *p_playlist;
 118
 119             p_playlist = vlc_object_find( p_this,
 120                                           VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
 121             if( p_playlist )
 122             {
 123                 p_vout = vlc_object_find( p_playlist,
 124                                           VLC_OBJECT_VOUT, FIND_CHILD );
 125                 /* only first children of p_input for unused vout */
 126                 if( p_vout && p_vout->p_parent != p_playlist )
 127                 {
 128                     vlc_object_release( p_vout );
 129                     p_vout = NULL;
 130                 }
 131                 vlc_object_release( p_playlist );
 132             }
 133         }
 134     }
 135
 136     /* If we now have a video output, check it has the right properties */
 137     if( p_vout )
 138     {
 139         char *psz_filter_chain;
 140         vlc_value_t val;
 141
 142         /* We don't directly check for the "filter" variable for obvious
 143          * performance reasons. */
 144         if( p_vout->b_filter_change )
 145         {
 146             var_Get( p_vout, "filter", &val );
 147             psz_filter_chain = val.psz_string;
 148
 149             if( psz_filter_chain && !*psz_filter_chain )
 150             {
 151                 free( psz_filter_chain );
 152                 psz_filter_chain = NULL;
 153             }
 154             if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
 155             {
 156                 free( p_vout->psz_filter_chain );
 157                 p_vout->psz_filter_chain = NULL;
 158             }
 159
 160             if( !psz_filter_chain && !p_vout->psz_filter_chain )
 161             {
 162                 p_vout->b_filter_change = VLC_FALSE;
 163             }
 164
 165             if( psz_filter_chain ) free( psz_filter_chain );
 166         }
 167
 168         if( ( p_vout->render.i_width != i_width ) ||
 169             ( p_vout->render.i_height != i_height ) ||
 170             ( p_vout->render.i_chroma != i_chroma ) ||
 171             ( p_vout->render.i_aspect != i_aspect
 172                     && !p_vout->b_override_aspect ) ||
 173             p_vout->b_filter_change )
 174         {
 175             /* We are not interested in this format, close this vout */
 176             vlc_object_detach( p_vout );
 177             vlc_object_release( p_vout );
 178             vout_Destroy( p_vout );
 179             p_vout = NULL;
 180         }
 181         else
 182         {
 183             /* This video output is cool! Hijack it. */
 184             vlc_object_detach( p_vout );
 185             spu_Attach( p_vout->p_spu, p_this, VLC_TRUE );
 186             vlc_object_attach( p_vout, p_this );
 187             vlc_object_release( p_vout );
 188         }
 189     }
 190
 191     if( !p_vout )
 192     {
 193         msg_Dbg( p_this, "no usable vout present, spawning one" );
 194
 195         p_vout = vout_Create( p_this, i_width, i_height, i_chroma, i_aspect );
 196     }
 197
 198     return p_vout;
 199 }
 200
 201 /*****************************************************************************
 202  * vout_Create: creates a new video output thread
 203  *****************************************************************************
 204  * This function creates a new video output thread, and returns a pointer
 205  * to its description. On error, it returns NULL.
 206  *****************************************************************************/
 207 vout_thread_t * __vout_Create( vlc_object_t *p_parent,
 208                                unsigned int i_width, unsigned int i_height,
 209                                vlc_fourcc_t i_chroma, unsigned int i_aspect )
 210 {
 211     vout_thread_t  * p_vout;                            /* thread descriptor */
 212     input_thread_t * p_input_thread;
 213     int              i_index;                               /* loop variable */
 214     char           * psz_plugin;
 215     vlc_value_t      val, text;
 216
 217     /* Allocate descriptor */
 218     p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
 219     if( p_vout == NULL )
 220     {
 221         msg_Err( p_parent, "out of memory" );
 222         return NULL;
 223     }
 224
 225     /* Initialize pictures - translation tables and functions
 226      * will be initialized later in InitThread */
 227     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
 228     {
 229         p_vout->p_picture[i_index].pf_lock = NULL;
 230         p_vout->p_picture[i_index].pf_unlock = NULL;
 231         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 232         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 233         p_vout->p_picture[i_index].b_slow   = 0;
 234     }
 235
 236     /* No images in the heap */
 237     p_vout->i_heap_size = 0;
 238
 239     /* Initialize the rendering heap */
 240     I_RENDERPICTURES = 0;
 241     p_vout->render.i_width    = i_width;
 242     p_vout->render.i_height   = i_height;
 243     p_vout->render.i_chroma   = i_chroma;
 244     p_vout->render.i_aspect   = i_aspect;
 245
 246     p_vout->render.i_rmask    = 0;
 247     p_vout->render.i_gmask    = 0;
 248     p_vout->render.i_bmask    = 0;
 249
 250     p_vout->render.i_last_used_pic = -1;
 251     p_vout->render.b_allow_modify_pics = 1;
 252
 253     /* Zero the output heap */
 254     I_OUTPUTPICTURES = 0;
 255     p_vout->output.i_width    = 0;
 256     p_vout->output.i_height   = 0;
 257     p_vout->output.i_chroma   = 0;
 258     p_vout->output.i_aspect   = 0;
 259
 260     p_vout->output.i_rmask    = 0;
 261     p_vout->output.i_gmask    = 0;
 262     p_vout->output.i_bmask    = 0;
 263
 264     /* Initialize misc stuff */
 265     p_vout->i_changes    = 0;
 266     p_vout->f_gamma      = 0;
 267     p_vout->b_grayscale  = 0;
 268     p_vout->b_info       = 0;
 269     p_vout->b_interface  = 0;
 270     p_vout->b_scale      = 1;
 271     p_vout->b_fullscreen = 0;
 272     p_vout->i_alignment  = 0;
 273     p_vout->render_time  = 10;
 274     p_vout->c_fps_samples = 0;
 275     p_vout->b_filter_change = 0;
 276     p_vout->pf_control = 0;
 277     p_vout->p_parent_intf = 0;
 278
 279     /* Initialize locks */
 280     vlc_mutex_init( p_vout, &p_vout->picture_lock );
 281     vlc_mutex_init( p_vout, &p_vout->change_lock );
 282
 283     /* Mouse coordinates */
 284     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 285     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 286     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 287     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 288     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 289
 290     /* Initialize subpicture unit */
 291     p_vout->p_spu = spu_Create( p_vout );
 292     spu_Attach( p_vout->p_spu, p_parent, VLC_TRUE );
 293
 294     /* Attach the new object now so we can use var inheritance below */
 295     vlc_object_attach( p_vout, p_parent );
 296
 297     spu_Init( p_vout->p_spu );
 298
 299     /* Take care of some "interface/control" related initialisations */
 300     vout_IntfInit( p_vout );
 301
 302     p_vout->b_override_aspect = VLC_FALSE;
 303
 304     /* If the parent is not a VOUT object, that means we are at the start of
 305      * the video output pipe */
 306     if( p_parent->i_object_type != VLC_OBJECT_VOUT )
 307     {
 308         var_Get( p_vout, "aspect-ratio", &val );
 309
 310         /* Check whether the user tried to override aspect ratio */
 311         if( val.psz_string )
 312         {
 313             unsigned int i_new_aspect = i_aspect;
 314             char *psz_parser = strchr( val.psz_string, ':' );
 315
 316             if( psz_parser )
 317             {
 318                 *psz_parser++ = '\0';
 319                 i_new_aspect = atoi( val.psz_string ) * VOUT_ASPECT_FACTOR
 320                                                       / atoi( psz_parser );
 321             }
 322             else
 323             {
 324                 i_new_aspect = i_width * VOUT_ASPECT_FACTOR
 325                                        * atof( val.psz_string )
 326                                        / i_height;
 327             }
 328
 329             free( val.psz_string );
 330
 331             if( i_new_aspect && i_new_aspect != i_aspect )
 332             {
 333                 int i_aspect_x, i_aspect_y;
 334
 335                 AspectRatio( i_new_aspect, &i_aspect_x, &i_aspect_y );
 336
 337                 msg_Dbg( p_vout, "overriding source aspect ratio to %i:%i",
 338                          i_aspect_x, i_aspect_y );
 339
 340                 p_vout->render.i_aspect = i_new_aspect;
 341
 342                 p_vout->b_override_aspect = VLC_TRUE;
 343             }
 344         }
 345
 346         /* Look for the default filter configuration */
 347         var_Create( p_vout, "filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 348         var_Get( p_vout, "filter", &val );
 349         p_vout->psz_filter_chain = val.psz_string;
 350     }
 351     else
 352     {
 353         /* continue the parent's filter chain */
 354         char *psz_end;
 355
 356         psz_end = strchr( ((vout_thread_t *)p_parent)->psz_filter_chain, ':' );
 357         if( psz_end && *(psz_end+1) )
 358             p_vout->psz_filter_chain = strdup( psz_end+1 );
 359         else p_vout->psz_filter_chain = NULL;
 360     }
 361
 362     /* Choose the video output module */
 363     if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 364     {
 365         var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 366         var_Get( p_vout, "vout", &val );
 367         psz_plugin = val.psz_string;
 368     }
 369     else
 370     {
 371         /* the filter chain is a string list of filters separated by double
 372          * colons */
 373         char *psz_end;
 374
 375         psz_end = strchr( p_vout->psz_filter_chain, ':' );
 376         if( psz_end )
 377             psz_plugin = strndup( p_vout->psz_filter_chain,
 378                                   psz_end - p_vout->psz_filter_chain );
 379         else psz_plugin = strdup( p_vout->psz_filter_chain );
 380     }
 381
 382     /* Initialize the dimensions of the video window */
 383     InitWindowSize( p_vout, &p_vout->i_window_width,
 384                     &p_vout->i_window_height );
 385
 386     /* Create the vout thread */
 387     p_vout->p_module = module_Need( p_vout,
 388         ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
 389         "video filter" : "video output", psz_plugin, 0 );
 390
 391     if( psz_plugin ) free( psz_plugin );
 392     if( p_vout->p_module == NULL )
 393     {
 394         msg_Err( p_vout, "no suitable vout module" );
 395         vlc_object_detach( p_vout );
 396         vlc_object_destroy( p_vout );
 397         return NULL;
 398     }
 399
 400     /* Create a few object variables for interface interaction */
 401     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
 402     text.psz_string = _("Deinterlace");
 403     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
 404     val.psz_string = ""; text.psz_string = _("Disable");
 405     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 406     val.psz_string = "discard"; text.psz_string = _("Discard");
 407     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 408     val.psz_string = "blend"; text.psz_string = _("Blend");
 409     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 410     val.psz_string = "mean"; text.psz_string = _("Mean");
 411     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 412     val.psz_string = "bob"; text.psz_string = _("Bob");
 413     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 414     val.psz_string = "linear"; text.psz_string = _("Linear");
 415     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 416     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 417     {
 418         var_Set( p_vout, "deinterlace", val );
 419         if( val.psz_string ) free( val.psz_string );
 420     }
 421     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 422
 423
 424     var_Create( p_vout, "filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 425     text.psz_string = _("Filters");
 426     var_Change( p_vout, "filter", VLC_VAR_SETTEXT, &text, NULL );
 427     var_AddCallback( p_vout, "filter", FilterCallback, NULL );
 428
 429     /* Calculate delay created by internal caching */
 430     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 431                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 432     if( p_input_thread )
 433     {
 434         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 435         vlc_object_release( p_input_thread );
 436     }
 437     else
 438     {
 439         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 440     }
 441
 442     if( vlc_thread_create( p_vout, "video output", RunThread,
 443                            VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) )
 444     {
 445         msg_Err( p_vout, "out of memory" );
 446         module_Unneed( p_vout, p_vout->p_module );
 447         vlc_object_detach( p_vout );
 448         vlc_object_destroy( p_vout );
 449         return NULL;
 450     }
 451
 452     if( p_vout->b_error )
 453     {
 454         msg_Err( p_vout, "video output creation failed" );
 455
 456         /* Make sure the thread is destroyed */
 457         p_vout->b_die = VLC_TRUE;
 458
 459         vlc_thread_join( p_vout );
 460
 461         vlc_object_detach( p_vout );
 462         vlc_object_destroy( p_vout );
 463         return NULL;
 464     }
 465
 466     return p_vout;
 467 }
 468
 469 /*****************************************************************************
 470  * vout_Destroy: destroys a previously created video output
 471  *****************************************************************************
 472  * Destroy a terminated thread.
 473  * The function will request a destruction of the specified thread. If pi_error
 474  * is NULL, it will return once the thread is destroyed. Else, it will be
 475  * update using one of the THREAD_* constants.
 476  *****************************************************************************/
 477 void vout_Destroy( vout_thread_t *p_vout )
 478 {
 479     vlc_object_t *p_playlist;
 480
 481     /* Request thread destruction */
 482     p_vout->b_die = VLC_TRUE;
 483     vlc_thread_join( p_vout );
 484
 485     var_Destroy( p_vout, "intf-change" );
 486
 487     p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
 488                                   FIND_ANYWHERE );
 489
 490     if( p_vout->psz_filter_chain ) free( p_vout->psz_filter_chain );
 491
 492     /* Free structure */
 493     vlc_object_destroy( p_vout );
 494
 495     /* If it was the last vout, tell the interface to show up */
 496     if( p_playlist != NULL )
 497     {
 498         vout_thread_t *p_another_vout = vlc_object_find( p_playlist,
 499                                             VLC_OBJECT_VOUT, FIND_ANYWHERE );
 500         if( p_another_vout == NULL )
 501         {
 502             vlc_value_t val;
 503             val.b_bool = VLC_TRUE;
 504             var_Set( p_playlist, "intf-show", val );
 505         }
 506         else
 507         {
 508             vlc_object_release( p_another_vout );
 509         }
 510         vlc_object_release( p_playlist );
 511     }
 512 }
 513
 514 /*****************************************************************************
 515  * InitThread: initialize video output thread
 516  *****************************************************************************
 517  * This function is called from RunThread and performs the second step of the
 518  * initialization. It returns 0 on success. Note that the thread's flag are not
 519  * modified inside this function.
 520  *****************************************************************************/
 521 static int InitThread( vout_thread_t *p_vout )
 522 {
 523     int i, i_aspect_x, i_aspect_y;
 524
 525     vlc_mutex_lock( &p_vout->change_lock );
 526
 527 #ifdef STATS
 528     p_vout->c_loops = 0;
 529 #endif
 530
 531     /* Initialize output method, it allocates direct buffers for us */
 532     if( p_vout->pf_init( p_vout ) )
 533     {
 534         vlc_mutex_unlock( &p_vout->change_lock );
 535         return VLC_EGENERIC;
 536     }
 537
 538     if( !I_OUTPUTPICTURES )
 539     {
 540         msg_Err( p_vout, "plugin was unable to allocate at least "
 541                          "one direct buffer" );
 542         p_vout->pf_end( p_vout );
 543         vlc_mutex_unlock( &p_vout->change_lock );
 544         return VLC_EGENERIC;
 545     }
 546
 547     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 548     {
 549         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 550                          "our internal buffers must have overflown." );
 551         p_vout->pf_end( p_vout );
 552         vlc_mutex_unlock( &p_vout->change_lock );
 553         return VLC_EGENERIC;
 554     }
 555
 556     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 557
 558     AspectRatio( p_vout->render.i_aspect, &i_aspect_x, &i_aspect_y );
 559     msg_Dbg( p_vout,
 560              "picture in %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i",
 561              p_vout->render.i_width, p_vout->render.i_height,
 562              p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma,
 563              i_aspect_x, i_aspect_y );
 564
 565     AspectRatio( p_vout->output.i_aspect, &i_aspect_x, &i_aspect_y );
 566     msg_Dbg( p_vout,
 567              "picture out %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i",
 568              p_vout->output.i_width, p_vout->output.i_height,
 569              p_vout->output.i_chroma, (char*)&p_vout->output.i_chroma,
 570              i_aspect_x, i_aspect_y );
 571
 572     /* Calculate shifts from system-updated masks */
 573     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 574                  p_vout->output.i_rmask );
 575     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 576                  p_vout->output.i_gmask );
 577     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 578                  p_vout->output.i_bmask );
 579
 580     /* Check whether we managed to create direct buffers similar to
 581      * the render buffers, ie same size and chroma */
 582     if( ( p_vout->output.i_width == p_vout->render.i_width )
 583      && ( p_vout->output.i_height == p_vout->render.i_height )
 584      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 585     {
 586         /* Cool ! We have direct buffers, we can ask the decoder to
 587          * directly decode into them ! Map the first render buffers to
 588          * the first direct buffers, but keep the first direct buffer
 589          * for memcpy operations */
 590         p_vout->b_direct = 1;
 591
 592         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 593         {
 594             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 595                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 596                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 597             {
 598                 /* We have enough direct buffers so there's no need to
 599                  * try to use system memory buffers. */
 600                 break;
 601             }
 602             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 603             I_RENDERPICTURES++;
 604         }
 605
 606         msg_Dbg( p_vout, "direct render, mapping "
 607                  "render pictures 0-%i to system pictures 1-%i",
 608                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 609     }
 610     else
 611     {
 612         /* Rats... Something is wrong here, we could not find an output
 613          * plugin able to directly render what we decode. See if we can
 614          * find a chroma plugin to do the conversion */
 615         p_vout->b_direct = 0;
 616
 617         /* Choose the best module */
 618         p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL, 0 );
 619
 620         if( p_vout->chroma.p_module == NULL )
 621         {
 622             msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
 623                      (char*)&p_vout->render.i_chroma,
 624                      (char*)&p_vout->output.i_chroma );
 625             p_vout->pf_end( p_vout );
 626             vlc_mutex_unlock( &p_vout->change_lock );
 627             return VLC_EGENERIC;
 628         }
 629
 630         msg_Dbg( p_vout, "indirect render, mapping "
 631                  "render pictures 0-%i to system pictures %i-%i",
 632                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 633                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 634
 635         /* Append render buffers after the direct buffers */
 636         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 637         {
 638             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 639             I_RENDERPICTURES++;
 640
 641             /* Check if we have enough render pictures */
 642             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 643                 break;
 644         }
 645     }
 646
 647     /* Link pictures back to their heap */
 648     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 649     {
 650         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 651     }
 652
 653     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 654     {
 655         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 656     }
 657
 658 /* XXX XXX mark thread ready */
 659     return VLC_SUCCESS;
 660 }
 661
 662 /*****************************************************************************
 663  * RunThread: video output thread
 664  *****************************************************************************
 665  * Video output thread. This function does only returns when the thread is
 666  * terminated. It handles the pictures arriving in the video heap and the
 667  * display device events.
 668  *****************************************************************************/
 669 static void RunThread( vout_thread_t *p_vout)
 670 {
 671     int             i_index;                                /* index in heap */
 672     int             i_idle_loops = 0;  /* loops without displaying a picture */
 673     mtime_t         current_date;                            /* current date */
 674     mtime_t         display_date;                            /* display date */
 675
 676     picture_t *     p_picture;                            /* picture pointer */
 677     picture_t *     p_last_picture = NULL;                   /* last picture */
 678     picture_t *     p_directbuffer;              /* direct buffer to display */
 679
 680     subpicture_t *  p_subpic;                          /* subpicture pointer */
 681
 682     /*
 683      * Initialize thread
 684      */
 685     p_vout->b_error = InitThread( p_vout );
 686
 687     /* signal the creation of the vout */
 688     vlc_thread_ready( p_vout );
 689
 690     if( p_vout->b_error )
 691     {
 692         /* Destroy thread structures allocated by Create and InitThread */
 693         DestroyThread( p_vout );
 694         return;
 695     }
 696
 697     /*
 698      * Main loop - it is not executed if an error occurred during
 699      * initialization
 700      */
 701     while( (!p_vout->b_die) && (!p_vout->b_error) )
 702     {
 703         /* Initialize loop variables */
 704         p_picture = NULL;
 705         display_date = 0;
 706         current_date = mdate();
 707
 708 #if 0
 709         p_vout->c_loops++;
 710         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 711         {
 712             msg_Dbg( p_vout, "picture heap: %d/%d",
 713                      I_RENDERPICTURES, p_vout->i_heap_size );
 714         }
 715 #endif
 716
 717         /*
 718          * Find the picture to display (the one with the earliest date).
 719          * This operation does not need lock, since only READY_PICTUREs
 720          * are handled. */
 721         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 722         {
 723             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 724                 && ( (p_picture == NULL) ||
 725                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 726             {
 727                 p_picture = PP_RENDERPICTURE[i_index];
 728                 display_date = p_picture->date;
 729             }
 730         }
 731
 732         if( p_picture )
 733         {
 734             /* If we met the last picture, parse again to see whether there is
 735              * a more appropriate one. */
 736             if( p_picture == p_last_picture )
 737             {
 738                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 739                 {
 740                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 741                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 742                         && ((p_picture == p_last_picture) ||
 743                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 744                     {
 745                         p_picture = PP_RENDERPICTURE[i_index];
 746                         display_date = p_picture->date;
 747                     }
 748                 }
 749             }
 750
 751             /* If we found better than the last picture, destroy it */
 752             if( p_last_picture && p_picture != p_last_picture )
 753             {
 754                 vlc_mutex_lock( &p_vout->picture_lock );
 755                 if( p_last_picture->i_refcount )
 756                 {
 757                     p_last_picture->i_status = DISPLAYED_PICTURE;
 758                 }
 759                 else
 760                 {
 761                     p_last_picture->i_status = DESTROYED_PICTURE;
 762                     p_vout->i_heap_size--;
 763                 }
 764                 vlc_mutex_unlock( &p_vout->picture_lock );
 765                 p_last_picture = NULL;
 766             }
 767
 768             /* Compute FPS rate */
 769             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 770                 = display_date;
 771
 772             if( !p_picture->b_force &&
 773                 p_picture != p_last_picture &&
 774                 display_date < current_date + p_vout->render_time )
 775             {
 776                 /* Picture is late: it will be destroyed and the thread
 777                  * will directly choose the next picture */
 778                 vlc_mutex_lock( &p_vout->picture_lock );
 779                 if( p_picture->i_refcount )
 780                 {
 781                     /* Pretend we displayed the picture, but don't destroy
 782                      * it since the decoder might still need it. */
 783                     p_picture->i_status = DISPLAYED_PICTURE;
 784                 }
 785                 else
 786                 {
 787                     /* Destroy the picture without displaying it */
 788                     p_picture->i_status = DESTROYED_PICTURE;
 789                     p_vout->i_heap_size--;
 790                 }
 791                 msg_Warn( p_vout, "late picture skipped ("I64Fd")",
 792                                   current_date - display_date );
 793                 vlc_mutex_unlock( &p_vout->picture_lock );
 794
 795                 continue;
 796             }
 797
 798             if( display_date >
 799                 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
 800             {
 801                 /* Picture is waaay too early: it will be destroyed */
 802                 vlc_mutex_lock( &p_vout->picture_lock );
 803                 if( p_picture->i_refcount )
 804                 {
 805                     /* Pretend we displayed the picture, but don't destroy
 806                      * it since the decoder might still need it. */
 807                     p_picture->i_status = DISPLAYED_PICTURE;
 808                 }
 809                 else
 810                 {
 811                     /* Destroy the picture without displaying it */
 812                     p_picture->i_status = DESTROYED_PICTURE;
 813                     p_vout->i_heap_size--;
 814                 }
 815                 msg_Warn( p_vout, "vout warning: early picture skipped "
 816                           "("I64Fd")", display_date - current_date
 817                           - p_vout->i_pts_delay );
 818                 vlc_mutex_unlock( &p_vout->picture_lock );
 819
 820                 continue;
 821             }
 822
 823             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 824             {
 825                 /* A picture is ready to be rendered, but its rendering date
 826                  * is far from the current one so the thread will perform an
 827                  * empty loop as if no picture were found. The picture state
 828                  * is unchanged */
 829                 p_picture    = NULL;
 830                 display_date = 0;
 831             }
 832             else if( p_picture == p_last_picture )
 833             {
 834                 /* We are asked to repeat the previous picture, but we first
 835                  * wait for a couple of idle loops */
 836                 if( i_idle_loops < 4 )
 837                 {
 838                     p_picture    = NULL;
 839                     display_date = 0;
 840                 }
 841                 else
 842                 {
 843                     /* We set the display date to something high, otherwise
 844                      * we'll have lots of problems with late pictures */
 845                     display_date = current_date + p_vout->render_time;
 846                 }
 847             }
 848         }
 849
 850         if( p_picture == NULL )
 851         {
 852             i_idle_loops++;
 853         }
 854
 855         /*
 856          * Check for subpictures to display
 857          */
 858         p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date );
 859
 860         /*
 861          * Perform rendering
 862          */
 863         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
 864
 865         /*
 866          * Call the plugin-specific rendering method if there is one
 867          */
 868         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
 869         {
 870             /* Render the direct buffer returned by vout_RenderPicture */
 871             p_vout->pf_render( p_vout, p_directbuffer );
 872         }
 873
 874         /*
 875          * Sleep, wake up
 876          */
 877         if( display_date != 0 && p_directbuffer != NULL )
 878         {
 879             mtime_t current_render_time = mdate() - current_date;
 880             /* if render time is very large we don't include it in the mean */
 881             if( current_render_time < p_vout->render_time +
 882                 VOUT_DISPLAY_DELAY )
 883             {
 884                 /* Store render time using a sliding mean weighting to
 885                  * current value in a 3 to 1 ratio*/
 886                 p_vout->render_time *= 3;
 887                 p_vout->render_time += current_render_time;
 888                 p_vout->render_time >>= 2;
 889             }
 890         }
 891
 892         /* Give back change lock */
 893         vlc_mutex_unlock( &p_vout->change_lock );
 894
 895         /* Sleep a while or until a given date */
 896         if( display_date != 0 )
 897         {
 898             /* If there are filters in the chain, better give them the picture
 899              * in advance */
 900             if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 901             {
 902                 mwait( display_date - VOUT_MWAIT_TOLERANCE );
 903             }
 904         }
 905         else
 906         {
 907             msleep( VOUT_IDLE_SLEEP );
 908         }
 909
 910         /* On awakening, take back lock and send immediately picture
 911          * to display. */
 912         vlc_mutex_lock( &p_vout->change_lock );
 913
 914         /*
 915          * Display the previously rendered picture
 916          */
 917         if( p_picture != NULL && p_directbuffer != NULL )
 918         {
 919             /* Display the direct buffer returned by vout_RenderPicture */
 920             if( p_vout->pf_display )
 921             {
 922                 p_vout->pf_display( p_vout, p_directbuffer );
 923             }
 924
 925             /* Tell the vout this was the last picture and that it does not
 926              * need to be forced anymore. */
 927             p_last_picture = p_picture;
 928             p_last_picture->b_force = 0;
 929         }
 930
 931         if( p_picture != NULL )
 932         {
 933             /* Reinitialize idle loop count */
 934             i_idle_loops = 0;
 935         }
 936
 937         /*
 938          * Check events and manage thread
 939          */
 940         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
 941         {
 942             /* A fatal error occurred, and the thread must terminate
 943              * immediately, without displaying anything - setting b_error to 1
 944              * causes the immediate end of the main while() loop. */
 945             p_vout->b_error = 1;
 946         }
 947
 948         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 949         {
 950             /* this must only happen when the vout plugin is incapable of
 951              * rescaling the picture itself. In this case we need to destroy
 952              * the current picture buffers and recreate new ones with the right
 953              * dimensions */
 954             int i;
 955
 956             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 957
 958             p_vout->pf_end( p_vout );
 959             for( i = 0; i < I_OUTPUTPICTURES; i++ )
 960                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
 961
 962             I_OUTPUTPICTURES = 0;
 963             if( p_vout->pf_init( p_vout ) )
 964             {
 965                 msg_Err( p_vout, "cannot resize display" );
 966                 /* FIXME: pf_end will be called again in EndThread() */
 967                 p_vout->b_error = 1;
 968             }
 969
 970             /* Need to reinitialise the chroma plugin */
 971             if( p_vout->chroma.p_module )
 972             {
 973                 if( p_vout->chroma.p_module->pf_deactivate )
 974                     p_vout->chroma.p_module->pf_deactivate( VLC_OBJECT(p_vout) );
 975                 p_vout->chroma.p_module->pf_activate( VLC_OBJECT(p_vout) );
 976             }
 977         }
 978
 979         if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
 980         {
 981             /* This happens when the picture buffers need to be recreated.
 982              * This is useful on multimonitor displays for instance.
 983              *
 984              * Warning: This only works when the vout creates only 1 picture
 985              * buffer!! */
 986             p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
 987
 988             if( !p_vout->b_direct )
 989             {
 990                 module_Unneed( p_vout, p_vout->chroma.p_module );
 991             }
 992
 993             vlc_mutex_lock( &p_vout->picture_lock );
 994
 995             p_vout->pf_end( p_vout );
 996
 997             I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
 998
 999             p_vout->b_error = InitThread( p_vout );
1000
1001             vlc_mutex_unlock( &p_vout->picture_lock );
1002         }
1003     }
1004
1005     /*
1006      * Error loop - wait until the thread destruction is requested
1007      */
1008     if( p_vout->b_error )
1009     {
1010         ErrorThread( p_vout );
1011     }
1012
1013     /* End of thread */
1014     EndThread( p_vout );
1015
1016     /* Destroy thread structures allocated by CreateThread */
1017     DestroyThread( p_vout );
1018 }
1019
1020 /*****************************************************************************
1021  * ErrorThread: RunThread() error loop
1022  *****************************************************************************
1023  * This function is called when an error occurred during thread main's loop.
1024  * The thread can still receive feed, but must be ready to terminate as soon
1025  * as possible.
1026  *****************************************************************************/
1027 static void ErrorThread( vout_thread_t *p_vout )
1028 {
1029     /* Wait until a `die' order */
1030     while( !p_vout->b_die )
1031     {
1032         /* Sleep a while */
1033         msleep( VOUT_IDLE_SLEEP );
1034     }
1035 }
1036
1037 /*****************************************************************************
1038  * EndThread: thread destruction
1039  *****************************************************************************
1040  * This function is called when the thread ends after a sucessful
1041  * initialization. It frees all resources allocated by InitThread.
1042  *****************************************************************************/
1043 static void EndThread( vout_thread_t *p_vout )
1044 {
1045     int     i_index;                                        /* index in heap */
1046
1047 #ifdef STATS
1048     {
1049         struct tms cpu_usage;
1050         times( &cpu_usage );
1051
1052         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1053                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1054     }
1055 #endif
1056
1057     if( !p_vout->b_direct )
1058     {
1059         module_Unneed( p_vout, p_vout->chroma.p_module );
1060     }
1061
1062     /* Destroy all remaining pictures */
1063     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1064     {
1065         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1066         {
1067             free( p_vout->p_picture[i_index].p_data_orig );
1068         }
1069     }
1070
1071     /* Destroy subpicture unit */
1072     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), VLC_FALSE );
1073     spu_Destroy( p_vout->p_spu );
1074
1075     /* Destroy translation tables */
1076     p_vout->pf_end( p_vout );
1077
1078     /* Release the change lock */
1079     vlc_mutex_unlock( &p_vout->change_lock );
1080 }
1081
1082 /*****************************************************************************
1083  * DestroyThread: thread destruction
1084  *****************************************************************************
1085  * This function is called when the thread ends. It frees all ressources
1086  * allocated by CreateThread. Status is available at this stage.
1087  *****************************************************************************/
1088 static void DestroyThread( vout_thread_t *p_vout )
1089 {
1090     /* Destroy the locks */
1091     vlc_mutex_destroy( &p_vout->picture_lock );
1092     vlc_mutex_destroy( &p_vout->change_lock );
1093
1094     /* Release the module */
1095     if( p_vout && p_vout->p_module )
1096     {
1097         module_Unneed( p_vout, p_vout->p_module );
1098     }
1099 }
1100
1101 /* following functions are local */
1102
1103 static int ReduceHeight( int i_ratio )
1104 {
1105     int i_dummy = VOUT_ASPECT_FACTOR;
1106     int i_pgcd  = 1;
1107
1108     if( !i_ratio )
1109     {
1110         return i_pgcd;
1111     }
1112
1113     /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1114     while( !(i_ratio & 1) && !(i_dummy & 1) )
1115     {
1116         i_ratio >>= 1;
1117         i_dummy >>= 1;
1118         i_pgcd  <<= 1;
1119     }
1120
1121     while( !(i_ratio % 3) && !(i_dummy % 3) )
1122     {
1123         i_ratio /= 3;
1124         i_dummy /= 3;
1125         i_pgcd  *= 3;
1126     }
1127
1128     while( !(i_ratio % 5) && !(i_dummy % 5) )
1129     {
1130         i_ratio /= 5;
1131         i_dummy /= 5;
1132         i_pgcd  *= 5;
1133     }
1134
1135     return i_pgcd;
1136 }
1137
1138 static void AspectRatio( int i_aspect, int *i_aspect_x, int *i_aspect_y )
1139 {
1140     unsigned int i_pgcd = ReduceHeight( i_aspect );
1141     *i_aspect_x = i_aspect / i_pgcd;
1142     *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
1143 }
1144
1145 /*****************************************************************************
1146  * BinaryLog: computes the base 2 log of a binary value
1147  *****************************************************************************
1148  * This functions is used by MaskToShift, to get a bit index from a binary
1149  * value.
1150  *****************************************************************************/
1151 static int BinaryLog( uint32_t i )
1152 {
1153     int i_log = 0;
1154
1155     if( i == 0 ) return -31337;
1156
1157     if( i & 0xffff0000 ) i_log += 16;
1158     if( i & 0xff00ff00 ) i_log += 8;
1159     if( i & 0xf0f0f0f0 ) i_log += 4;
1160     if( i & 0xcccccccc ) i_log += 2;
1161     if( i & 0xaaaaaaaa ) i_log += 1;
1162
1163     return i_log;
1164 }
1165
1166 /*****************************************************************************
1167  * MaskToShift: transform a color mask into right and left shifts
1168  *****************************************************************************
1169  * This function is used for obtaining color shifts from masks.
1170  *****************************************************************************/
1171 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1172 {
1173     uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
1174
1175     if( !i_mask )
1176     {
1177         *pi_left = *pi_right = 0;
1178         return;
1179     }
1180
1181     /* Get bits */
1182     i_low =  i_mask & (- (int32_t)i_mask);          /* lower bit of the mask */
1183     i_high = i_mask + i_low;                       /* higher bit of the mask */
1184
1185     /* Transform bits into an index */
1186     i_low =  BinaryLog (i_low);
1187     i_high = BinaryLog (i_high);
1188
1189     /* Update pointers and return */
1190     *pi_left =   i_low;
1191     *pi_right = (8 - i_high + i_low);
1192 }
1193
1194 /*****************************************************************************
1195  * InitWindowSize: find the initial dimensions the video window should have.
1196  *****************************************************************************
1197  * This function will check the "width", "height" and "zoom" config options and
1198  * will calculate the size that the video window should have.
1199  *****************************************************************************/
1200 static void InitWindowSize( vout_thread_t *p_vout, int *pi_width,
1201                             int *pi_height )
1202 {
1203     vlc_value_t val;
1204     int i_width, i_height;
1205     uint64_t ll_zoom;
1206
1207 #define FP_FACTOR 1000                             /* our fixed point factor */
1208
1209     var_Get( p_vout, "align", &val );
1210     p_vout->i_alignment = val.i_int;
1211
1212     var_Get( p_vout, "width", &val );
1213     i_width = val.i_int;
1214     var_Get( p_vout, "height", &val );
1215     i_height = val.i_int;
1216     var_Get( p_vout, "zoom", &val );
1217     ll_zoom = (uint64_t)( FP_FACTOR * val.f_float );
1218
1219     if( i_width > 0 && i_height > 0)
1220     {
1221         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
1222         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
1223         return;
1224     }
1225     else if( i_width > 0 )
1226     {
1227         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
1228         *pi_height = (int)( i_width * ll_zoom * VOUT_ASPECT_FACTOR /
1229                             p_vout->render.i_aspect / FP_FACTOR );
1230         return;
1231     }
1232     else if( i_height > 0 )
1233     {
1234         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
1235         *pi_width = (int)( i_height * ll_zoom * p_vout->render.i_aspect /
1236                            VOUT_ASPECT_FACTOR / FP_FACTOR );
1237         return;
1238     }
1239
1240     if( p_vout->render.i_height * p_vout->render.i_aspect
1241         >= p_vout->render.i_width * VOUT_ASPECT_FACTOR )
1242     {
1243         *pi_width = (int)( p_vout->render.i_height * ll_zoom
1244           * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR / FP_FACTOR );
1245         *pi_height = (int)( p_vout->render.i_height * ll_zoom / FP_FACTOR );
1246     }
1247     else
1248     {
1249         *pi_width = (int)( p_vout->render.i_width * ll_zoom / FP_FACTOR );
1250         *pi_height = (int)( p_vout->render.i_width * ll_zoom
1251           * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect / FP_FACTOR );
1252     }
1253
1254 #undef FP_FACTOR
1255 }
1256
1257 /*****************************************************************************
1258  * vout_VarCallback: generic callback for intf variables
1259  *****************************************************************************/
1260 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1261                       vlc_value_t old_value, vlc_value_t new_value,
1262                       void * unused )
1263 {
1264     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1265     vlc_value_t val;
1266     val.b_bool = VLC_TRUE;
1267     var_Set( p_vout, "intf-change", val );
1268     return VLC_SUCCESS;
1269 }
1270
1271 /*****************************************************************************
1272  * Helper thread for object variables callbacks.
1273  * Only used to avoid deadlocks when using the video embedded mode.
1274  *****************************************************************************/
1275 typedef struct suxor_thread_t
1276 {
1277     VLC_COMMON_MEMBERS
1278     input_thread_t *p_input;
1279
1280 } suxor_thread_t;
1281
1282 static void SuxorRestartVideoES( suxor_thread_t *p_this )
1283 {
1284     vlc_value_t val;
1285
1286     /* Now restart current video stream */
1287     var_Get( p_this->p_input, "video-es", &val );
1288     if( val.i_int >= 0 )
1289     {
1290         vlc_value_t val_es;
1291         val_es.i_int = -VIDEO_ES;
1292         var_Set( p_this->p_input, "video-es", val_es );
1293         var_Set( p_this->p_input, "video-es", val );
1294     }
1295
1296     vlc_object_release( p_this->p_input );
1297
1298 #ifdef WIN32
1299     CloseHandle( p_this->thread_id );
1300 #endif
1301
1302     vlc_object_destroy( p_this );
1303 }
1304
1305 /*****************************************************************************
1306  * object variables callbacks: a bunch of object variables are used by the
1307  * interfaces to interact with the vout.
1308  *****************************************************************************/
1309 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1310                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1311 {
1312     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1313     input_thread_t *p_input;
1314     vlc_value_t val;
1315
1316     char *psz_mode = newval.psz_string;
1317     char *psz_filter, *psz_deinterlace = NULL;
1318
1319     var_Get( p_vout, "filter", &val );
1320     psz_filter = val.psz_string;
1321     if( psz_filter ) psz_deinterlace = strstr( psz_filter, "deinterlace" );
1322
1323     if( !psz_mode || !*psz_mode )
1324     {
1325         if( psz_deinterlace )
1326         {
1327             char *psz_src = psz_deinterlace + sizeof("deinterlace") - 1;
1328             if( psz_src[0] == ',' ) psz_src++;
1329             memmove( psz_deinterlace, psz_src, strlen(psz_src) + 1 );
1330         }
1331     }
1332     else if( !psz_deinterlace )
1333     {
1334         psz_filter = realloc( psz_filter, strlen( psz_filter ) +
1335                               sizeof(",deinterlace") );
1336         if( psz_filter && *psz_filter ) strcat( psz_filter, "," );
1337         strcat( psz_filter, "deinterlace" );
1338     }
1339
1340     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1341                                                  FIND_PARENT );
1342     if( !p_input ) return VLC_EGENERIC;
1343
1344     if( psz_mode && *psz_mode )
1345     {
1346         /* Modify input as well because the vout might have to be restarted */
1347         val.psz_string = psz_mode;
1348         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1349         var_Set( p_input, "deinterlace-mode", val );
1350     }
1351     vlc_object_release( p_input );
1352
1353     val.b_bool = VLC_TRUE;
1354     var_Set( p_vout, "intf-change", val );
1355
1356     val.psz_string = psz_filter;
1357     var_Set( p_vout, "filter", val );
1358     if( psz_filter ) free( psz_filter );
1359
1360     return VLC_SUCCESS;
1361 }
1362
1363 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1364                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1365 {
1366     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1367     input_thread_t *p_input;
1368     vlc_value_t val;
1369
1370     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1371                                                  FIND_PARENT );
1372     if (!p_input)
1373     {
1374         msg_Err( p_vout, "Input not found" );
1375         return( VLC_EGENERIC );
1376     }
1377
1378     val.b_bool = VLC_TRUE;
1379     var_Set( p_vout, "intf-change", val );
1380
1381     /* Modify input as well because the vout might have to be restarted */
1382     val.psz_string = newval.psz_string;
1383     var_Create( p_input, "filter", VLC_VAR_STRING );
1384     var_Set( p_input, "filter", val );
1385
1386     /* Now restart current video stream */
1387     var_Get( p_input, "video-es", &val );
1388     if( val.i_int >= 0 )
1389     {
1390         suxor_thread_t *p_suxor =
1391             vlc_object_create( p_vout, sizeof(suxor_thread_t) );
1392         p_suxor->p_input = p_input;
1393         p_vout->b_filter_change = VLC_TRUE;
1394         vlc_object_yield( p_input );
1395         vlc_thread_create( p_suxor, "suxor", SuxorRestartVideoES,
1396                            VLC_THREAD_PRIORITY_LOW, VLC_FALSE );
1397     }
1398
1399     vlc_object_release( p_input );
1400
1401     return VLC_SUCCESS;
1402 }