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 1.231 2003/07/29 22:20:53 gbazin 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     /* Initialize pictures and subpictures - translation tables and functions
 220      * will be initialized later in InitThread */
 221     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES; i_index++)
 222     {
 223         p_vout->p_picture[i_index].pf_lock = NULL;
 224         p_vout->p_picture[i_index].pf_unlock = NULL;
 225         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 226         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 227     }
 228
 229     for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
 230     {
 231         p_vout->p_subpicture[i_index].i_status = FREE_SUBPICTURE;
 232         p_vout->p_subpicture[i_index].i_type   = EMPTY_SUBPICTURE;
 233     }
 234
 235     /* No images in the heap */
 236     p_vout->i_heap_size = 0;
 237
 238     /* Initialize the rendering heap */
 239     I_RENDERPICTURES = 0;
 240     p_vout->render.i_width    = i_width;
 241     p_vout->render.i_height   = i_height;
 242     p_vout->render.i_chroma   = i_chroma;
 243     p_vout->render.i_aspect   = i_aspect;
 244
 245     p_vout->render.i_rmask    = 0;
 246     p_vout->render.i_gmask    = 0;
 247     p_vout->render.i_bmask    = 0;
 248
 249     p_vout->render.i_last_used_pic = -1;
 250     p_vout->render.b_allow_modify_pics = 1;
 251
 252     /* Zero the output heap */
 253     I_OUTPUTPICTURES = 0;
 254     p_vout->output.i_width    = 0;
 255     p_vout->output.i_height   = 0;
 256     p_vout->output.i_chroma   = 0;
 257     p_vout->output.i_aspect   = 0;
 258
 259     p_vout->output.i_rmask    = 0;
 260     p_vout->output.i_gmask    = 0;
 261     p_vout->output.i_bmask    = 0;
 262
 263     /* Initialize misc stuff */
 264     p_vout->i_changes    = 0;
 265     p_vout->f_gamma      = 0;
 266     p_vout->b_grayscale  = 0;
 267     p_vout->b_info       = 0;
 268     p_vout->b_interface  = 0;
 269     p_vout->b_scale      = 1;
 270     p_vout->b_fullscreen = 0;
 271     p_vout->render_time  = 10;
 272     p_vout->c_fps_samples = 0;
 273     p_vout->b_filter_change = 0;
 274
 275     /* Mouse coordinates */
 276     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 277     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 278     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 279     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 280     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 281     var_Create( p_vout, "key-pressed", VLC_VAR_STRING );
 282
 283     var_Create( p_vout, "intf-change", VLC_VAR_BOOL );
 284     val.b_bool = VLC_TRUE;
 285     var_Set( p_vout, "intf-change", val );
 286
 287     /* Initialize locks */
 288     vlc_mutex_init( p_vout, &p_vout->picture_lock );
 289     vlc_mutex_init( p_vout, &p_vout->subpicture_lock );
 290     vlc_mutex_init( p_vout, &p_vout->change_lock );
 291
 292     /* Attach the new object now so we can use var inheritance below */
 293     vlc_object_attach( p_vout, p_parent );
 294
 295     /* Create a few object variables we'll need later on */
 296     var_Create( p_vout, "aspect-ratio", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 297     var_Create( p_vout, "width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 298     var_Create( p_vout, "height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 299     var_Create( p_vout, "zoom", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
 300
 301     p_vout->b_override_aspect = VLC_FALSE;
 302
 303     /* If the parent is not a VOUT object, that means we are at the start of
 304      * the video output pipe */
 305     if( p_parent->i_object_type != VLC_OBJECT_VOUT )
 306     {
 307         var_Get( p_vout, "aspect-ratio", &val );
 308
 309         /* Check whether the user tried to override aspect ratio */
 310         if( val.psz_string )
 311         {
 312             unsigned int i_new_aspect = i_aspect;
 313             char *psz_parser = strchr( val.psz_string, ':' );
 314
 315             if( psz_parser )
 316             {
 317                 *psz_parser++ = '\0';
 318                 i_new_aspect = atoi( val.psz_string ) * VOUT_ASPECT_FACTOR
 319                                                       / atoi( psz_parser );
 320             }
 321             else
 322             {
 323                 i_new_aspect = i_width * VOUT_ASPECT_FACTOR
 324                                        * atof( val.psz_string )
 325                                        / i_height;
 326             }
 327
 328             free( val.psz_string );
 329
 330             if( i_new_aspect && i_new_aspect != i_aspect )
 331             {
 332                 int i_pgcd = ReduceHeight( i_new_aspect );
 333
 334                 msg_Dbg( p_vout, "overriding source aspect ratio to %i:%i",
 335                          i_new_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
 336
 337                 p_vout->render.i_aspect = i_new_aspect;
 338
 339                 p_vout->b_override_aspect = VLC_TRUE;
 340             }
 341         }
 342
 343         /* Look for the default filter configuration */
 344         var_Create( p_vout, "filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 345         var_Get( p_vout, "filter", &val );
 346         p_vout->psz_filter_chain = val.psz_string;
 347     }
 348     else
 349     {
 350         /* continue the parent's filter chain */
 351         char *psz_end;
 352
 353         psz_end = strchr( ((vout_thread_t *)p_parent)->psz_filter_chain, ':' );
 354         if( psz_end && *(psz_end+1) )
 355             p_vout->psz_filter_chain = strdup( psz_end+1 );
 356         else p_vout->psz_filter_chain = NULL;
 357     }
 358
 359     /* Choose the video output module */
 360     if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 361     {
 362         var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 363         var_Get( p_vout, "vout", &val );
 364         psz_plugin = val.psz_string;
 365     }
 366     else
 367     {
 368         /* the filter chain is a string list of filters separated by double
 369          * colons */
 370         char *psz_end;
 371
 372         psz_end = strchr( p_vout->psz_filter_chain, ':' );
 373         if( psz_end )
 374             psz_plugin = strndup( p_vout->psz_filter_chain,
 375                                   psz_end - p_vout->psz_filter_chain );
 376         else psz_plugin = strdup( p_vout->psz_filter_chain );
 377     }
 378
 379     /* Initialize the dimensions of the video window */
 380     InitWindowSize( p_vout, &p_vout->i_window_width,
 381                     &p_vout->i_window_height );
 382
 383     /* Create the vout thread */
 384     p_vout->p_module = module_Need( p_vout,
 385                            ( p_vout->psz_filter_chain &&
 386                                *p_vout->psz_filter_chain ) ?
 387                            "video filter" : "video output",
 388                            psz_plugin );
 389
 390     if( psz_plugin ) free( psz_plugin );
 391     if( p_vout->p_module == NULL )
 392     {
 393         msg_Err( p_vout, "no suitable vout module" );
 394         vlc_object_destroy( p_vout );
 395         return NULL;
 396     }
 397
 398     p_vout->p_text_renderer_module = module_Need( p_vout, "text renderer",
 399                                                   NULL );
 400     if( p_vout->p_text_renderer_module == NULL )
 401     {
 402         msg_Warn( p_vout, "no suitable text renderer module" );
 403         p_vout->pf_add_string = NULL;
 404     }
 405
 406     /* Create a few object variables for interface interaction */
 407     var_Create( p_vout, "fullscreen", VLC_VAR_BOOL );
 408     text.psz_string = _("Fullscreen");
 409     var_Change( p_vout, "fullscreen", VLC_VAR_SETTEXT, &text, NULL );
 410     var_Change( p_vout, "fullscreen", VLC_VAR_INHERITVALUE, &val, NULL );
 411     if( val.b_bool )
 412     {
 413         /* user requested fullscreen */
 414         p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 415     }
 416     var_AddCallback( p_vout, "fullscreen", FullscreenCallback, NULL );
 417
 418     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
 419     text.psz_string = _("Deinterlace");
 420     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
 421     val.psz_string = ""; text.psz_string = _("Disable");
 422     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 423     val.psz_string = "discard"; text.psz_string = _("Discard");
 424     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 425     val.psz_string = "blend"; text.psz_string = _("Blend");
 426     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 427     val.psz_string = "mean"; text.psz_string = _("Mean");
 428     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 429     val.psz_string = "bob"; text.psz_string = _("Bob");
 430     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 431     val.psz_string = "linear"; text.psz_string = _("Linear");
 432     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 433     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 434     {
 435         var_Set( p_vout, "deinterlace", val );
 436     }
 437     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 438
 439     /* Calculate delay created by internal caching */
 440     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 441                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 442     if( p_input_thread )
 443     {
 444         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 445         vlc_object_release( p_input_thread );
 446     }
 447     else
 448     {
 449         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 450     }
 451
 452     if( vlc_thread_create( p_vout, "video output", RunThread,
 453                            VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) )
 454     {
 455         msg_Err( p_vout, "out of memory" );
 456         module_Unneed( p_vout, p_vout->p_module );
 457         vlc_object_destroy( p_vout );
 458         return NULL;
 459     }
 460
 461     return p_vout;
 462 }
 463
 464 /*****************************************************************************
 465  * vout_Destroy: destroys a previously created video output
 466  *****************************************************************************
 467  * Destroy a terminated thread.
 468  * The function will request a destruction of the specified thread. If pi_error
 469  * is NULL, it will return once the thread is destroyed. Else, it will be
 470  * update using one of the THREAD_* constants.
 471  *****************************************************************************/
 472 void vout_Destroy( vout_thread_t *p_vout )
 473 {
 474     vlc_object_t *p_playlist;
 475
 476     /* Request thread destruction */
 477     p_vout->b_die = VLC_TRUE;
 478     vlc_thread_join( p_vout );
 479
 480     var_Destroy( p_vout, "intf-change" );
 481
 482     p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
 483                                   FIND_ANYWHERE );
 484
 485     /* Free structure */
 486     vlc_object_destroy( p_vout );
 487
 488     /* If it was the last vout, tell the interface to show up */
 489     if( p_playlist != NULL )
 490     {
 491         vout_thread_t *p_another_vout = vlc_object_find( p_playlist,
 492                                             VLC_OBJECT_VOUT, FIND_ANYWHERE );
 493         if( p_another_vout == NULL )
 494         {
 495             vlc_value_t val;
 496             val.b_bool = VLC_TRUE;
 497             var_Set( p_playlist, "intf-show", val );
 498         }
 499         else
 500         {
 501             vlc_object_release( p_another_vout );
 502         }
 503         vlc_object_release( p_playlist );
 504     }
 505 }
 506
 507 /*****************************************************************************
 508  * InitThread: initialize video output thread
 509  *****************************************************************************
 510  * This function is called from RunThread and performs the second step of the
 511  * initialization. It returns 0 on success. Note that the thread's flag are not
 512  * modified inside this function.
 513  *****************************************************************************/
 514 static int InitThread( vout_thread_t *p_vout )
 515 {
 516     int i, i_pgcd;
 517
 518     vlc_mutex_lock( &p_vout->change_lock );
 519
 520 #ifdef STATS
 521     p_vout->c_loops = 0;
 522 #endif
 523
 524     /* Initialize output method, it allocates direct buffers for us */
 525     if( p_vout->pf_init( p_vout ) )
 526     {
 527         vlc_mutex_unlock( &p_vout->change_lock );
 528         return VLC_EGENERIC;
 529     }
 530
 531     if( !I_OUTPUTPICTURES )
 532     {
 533         msg_Err( p_vout, "plugin was unable to allocate at least "
 534                          "one direct buffer" );
 535         p_vout->pf_end( p_vout );
 536         vlc_mutex_unlock( &p_vout->change_lock );
 537         return VLC_EGENERIC;
 538     }
 539
 540     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 541     {
 542         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 543                          "our internal buffers must have overflown." );
 544         p_vout->pf_end( p_vout );
 545         vlc_mutex_unlock( &p_vout->change_lock );
 546         return VLC_EGENERIC;
 547     }
 548
 549     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 550
 551 #if 0
 552     if( !p_vout->psz_filter_chain )
 553     {
 554         char *psz_aspect = config_GetPsz( p_vout, "pixel-ratio" );
 555
 556         if( psz_aspect )
 557         {
 558             int i_new_aspect = p_vout->output.i_width * VOUT_ASPECT_FACTOR
 559                                                       * atof( psz_aspect )
 560                                                       / p_vout->output.i_height;
 561             free( psz_aspect );
 562
 563             if( i_new_aspect && i_new_aspect != p_vout->output.i_aspect )
 564             {
 565                 int i_pgcd = ReduceHeight( i_new_aspect );
 566                 msg_Dbg( p_vout, "output ratio forced to %i:%i\n",
 567                          i_new_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
 568                 p_vout->output.i_aspect = i_new_aspect;
 569             }
 570         }
 571     }
 572 #endif
 573
 574     i_pgcd = ReduceHeight( p_vout->render.i_aspect );
 575     msg_Dbg( p_vout,
 576              "picture in %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i",
 577              p_vout->render.i_width, p_vout->render.i_height,
 578              p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma,
 579              p_vout->render.i_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
 580
 581     i_pgcd = ReduceHeight( p_vout->output.i_aspect );
 582     msg_Dbg( p_vout,
 583              "picture out %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i",
 584              p_vout->output.i_width, p_vout->output.i_height,
 585              p_vout->output.i_chroma, (char*)&p_vout->output.i_chroma,
 586              p_vout->output.i_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
 587
 588     /* Calculate shifts from system-updated masks */
 589     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 590                  p_vout->output.i_rmask );
 591     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 592                  p_vout->output.i_gmask );
 593     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 594                  p_vout->output.i_bmask );
 595
 596     /* Check whether we managed to create direct buffers similar to
 597      * the render buffers, ie same size and chroma */
 598     if( ( p_vout->output.i_width == p_vout->render.i_width )
 599      && ( p_vout->output.i_height == p_vout->render.i_height )
 600      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 601     {
 602         /* Cool ! We have direct buffers, we can ask the decoder to
 603          * directly decode into them ! Map the first render buffers to
 604          * the first direct buffers, but keep the first direct buffer
 605          * for memcpy operations */
 606         p_vout->b_direct = 1;
 607
 608         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 609         {
 610             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 611                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 612                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 613             {
 614                 /* We have enough direct buffers so there's no need to
 615                  * try to use system memory buffers. */
 616                 break;
 617             }
 618             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 619             I_RENDERPICTURES++;
 620         }
 621
 622         msg_Dbg( p_vout, "direct render, mapping "
 623                  "render pictures 0-%i to system pictures 1-%i",
 624                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 625     }
 626     else
 627     {
 628         /* Rats... Something is wrong here, we could not find an output
 629          * plugin able to directly render what we decode. See if we can
 630          * find a chroma plugin to do the conversion */
 631         p_vout->b_direct = 0;
 632
 633         /* Choose the best module */
 634         p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL );
 635
 636         if( p_vout->chroma.p_module == NULL )
 637         {
 638             msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
 639                      (char*)&p_vout->render.i_chroma,
 640                      (char*)&p_vout->output.i_chroma );
 641             p_vout->pf_end( p_vout );
 642             vlc_mutex_unlock( &p_vout->change_lock );
 643             return VLC_EGENERIC;
 644         }
 645
 646         msg_Dbg( p_vout, "indirect render, mapping "
 647                  "render pictures 0-%i to system pictures %i-%i",
 648                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 649                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 650
 651         /* Append render buffers after the direct buffers */
 652         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 653         {
 654             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 655             I_RENDERPICTURES++;
 656
 657             /* Check if we have enough render pictures */
 658             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 659                 break;
 660         }
 661     }
 662
 663     /* Link pictures back to their heap */
 664     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 665     {
 666         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 667     }
 668
 669     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 670     {
 671         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 672     }
 673
 674 /* XXX XXX mark thread ready */
 675     return VLC_SUCCESS;
 676 }
 677
 678 /*****************************************************************************
 679  * RunThread: video output thread
 680  *****************************************************************************
 681  * Video output thread. This function does only returns when the thread is
 682  * terminated. It handles the pictures arriving in the video heap and the
 683  * display device events.
 684  *****************************************************************************/
 685 static void RunThread( vout_thread_t *p_vout)
 686 {
 687     int             i_index;                                /* index in heap */
 688     int             i_idle_loops = 0;  /* loops without displaying a picture */
 689     mtime_t         current_date;                            /* current date */
 690     mtime_t         display_date;                            /* display date */
 691
 692     picture_t *     p_picture;                            /* picture pointer */
 693     picture_t *     p_last_picture = NULL;                   /* last picture */
 694     picture_t *     p_directbuffer;              /* direct buffer to display */
 695
 696     subpicture_t *  p_subpic;                          /* subpicture pointer */
 697
 698     /*
 699      * Initialize thread
 700      */
 701     p_vout->b_error = InitThread( p_vout );
 702
 703     /* signal the creation of the vout */
 704     vlc_thread_ready( p_vout );
 705
 706     if( p_vout->b_error )
 707     {
 708         /* Destroy thread structures allocated by Create and InitThread */
 709         DestroyThread( p_vout );
 710         return;
 711     }
 712
 713     /*
 714      * Main loop - it is not executed if an error occured during
 715      * initialization
 716      */
 717     while( (!p_vout->b_die) && (!p_vout->b_error) )
 718     {
 719         /* Initialize loop variables */
 720         p_picture = NULL;
 721         display_date = 0;
 722         current_date = mdate();
 723
 724 #if 0
 725         p_vout->c_loops++;
 726         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 727         {
 728             msg_Dbg( p_vout, "picture heap: %d/%d",
 729                      I_RENDERPICTURES, p_vout->i_heap_size );
 730         }
 731 #endif
 732
 733         /*
 734          * Find the picture to display (the one with the earliest date).
 735          * This operation does not need lock, since only READY_PICTUREs
 736          * are handled. */
 737         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 738         {
 739             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 740                 && ( (p_picture == NULL) ||
 741                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 742             {
 743                 p_picture = PP_RENDERPICTURE[i_index];
 744                 display_date = p_picture->date;
 745             }
 746         }
 747
 748         if( p_picture )
 749         {
 750             /* If we met the last picture, parse again to see whether there is
 751              * a more appropriate one. */
 752             if( p_picture == p_last_picture )
 753             {
 754                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 755                 {
 756                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 757                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 758                         && ((p_picture == p_last_picture) ||
 759                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 760                     {
 761                         p_picture = PP_RENDERPICTURE[i_index];
 762                         display_date = p_picture->date;
 763                     }
 764                 }
 765             }
 766
 767             /* If we found better than the last picture, destroy it */
 768             if( p_last_picture && p_picture != p_last_picture )
 769             {
 770                 vlc_mutex_lock( &p_vout->picture_lock );
 771                 if( p_last_picture->i_refcount )
 772                 {
 773                     p_last_picture->i_status = DISPLAYED_PICTURE;
 774                 }
 775                 else
 776                 {
 777                     p_last_picture->i_status = DESTROYED_PICTURE;
 778                     p_vout->i_heap_size--;
 779                 }
 780                 vlc_mutex_unlock( &p_vout->picture_lock );
 781                 p_last_picture = NULL;
 782             }
 783
 784             /* Compute FPS rate */
 785             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 786                 = display_date;
 787
 788             if( !p_picture->b_force &&
 789                 p_picture != p_last_picture &&
 790                 display_date < current_date + p_vout->render_time )
 791             {
 792                 /* Picture is late: it will be destroyed and the thread
 793                  * will directly choose the next picture */
 794                 vlc_mutex_lock( &p_vout->picture_lock );
 795                 if( p_picture->i_refcount )
 796                 {
 797                     /* Pretend we displayed the picture, but don't destroy
 798                      * it since the decoder might still need it. */
 799                     p_picture->i_status = DISPLAYED_PICTURE;
 800                 }
 801                 else
 802                 {
 803                     /* Destroy the picture without displaying it */
 804                     p_picture->i_status = DESTROYED_PICTURE;
 805                     p_vout->i_heap_size--;
 806                 }
 807                 msg_Warn( p_vout, "late picture skipped ("I64Fd")",
 808                                   current_date - display_date );
 809                 vlc_mutex_unlock( &p_vout->picture_lock );
 810
 811                 continue;
 812             }
 813
 814             if( display_date >
 815                 current_date + p_vout->i_pts_delay +  VOUT_BOGUS_DELAY )
 816             {
 817                 /* Picture is waaay too early: it will be destroyed */
 818                 vlc_mutex_lock( &p_vout->picture_lock );
 819                 if( p_picture->i_refcount )
 820                 {
 821                     /* Pretend we displayed the picture, but don't destroy
 822                      * it since the decoder might still need it. */
 823                     p_picture->i_status = DISPLAYED_PICTURE;
 824                 }
 825                 else
 826                 {
 827                     /* Destroy the picture without displaying it */
 828                     p_picture->i_status = DESTROYED_PICTURE;
 829                     p_vout->i_heap_size--;
 830                 }
 831                 msg_Warn( p_vout, "vout warning: early picture skipped "
 832                           "("I64Fd")", display_date - current_date
 833                           - p_vout->i_pts_delay );
 834                 vlc_mutex_unlock( &p_vout->picture_lock );
 835
 836                 continue;
 837             }
 838
 839             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 840             {
 841                 /* A picture is ready to be rendered, but its rendering date
 842                  * is far from the current one so the thread will perform an
 843                  * empty loop as if no picture were found. The picture state
 844                  * is unchanged */
 845                 p_picture    = NULL;
 846                 display_date = 0;
 847             }
 848             else if( p_picture == p_last_picture )
 849             {
 850                 /* We are asked to repeat the previous picture, but we first
 851                  * wait for a couple of idle loops */
 852                 if( i_idle_loops < 4 )
 853                 {
 854                     p_picture    = NULL;
 855                     display_date = 0;
 856                 }
 857                 else
 858                 {
 859                     /* We set the display date to something high, otherwise
 860                      * we'll have lots of problems with late pictures */
 861                     display_date = current_date + p_vout->render_time;
 862                 }
 863             }
 864         }
 865
 866         if( p_picture == NULL )
 867         {
 868             i_idle_loops++;
 869         }
 870
 871         /*
 872          * Check for subpictures to display
 873          */
 874         p_subpic = vout_SortSubPictures( p_vout, display_date );
 875
 876         /*
 877          * Perform rendering
 878          */
 879         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
 880
 881         /*
 882          * Call the plugin-specific rendering method if there is one
 883          */
 884         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
 885         {
 886             /* Render the direct buffer returned by vout_RenderPicture */
 887             p_vout->pf_render( p_vout, p_directbuffer );
 888         }
 889
 890         /*
 891          * Sleep, wake up
 892          */
 893         if( display_date != 0 && p_directbuffer != NULL )
 894         {
 895             /* Store render time using a sliding mean */
 896             p_vout->render_time += mdate() - current_date;
 897             p_vout->render_time >>= 1;
 898         }
 899
 900         /* Give back change lock */
 901         vlc_mutex_unlock( &p_vout->change_lock );
 902
 903         /* Sleep a while or until a given date */
 904         if( display_date != 0 )
 905         {
 906             mwait( display_date - VOUT_MWAIT_TOLERANCE );
 907         }
 908         else
 909         {
 910             msleep( VOUT_IDLE_SLEEP );
 911         }
 912
 913         /* On awakening, take back lock and send immediately picture
 914          * to display. */
 915         vlc_mutex_lock( &p_vout->change_lock );
 916
 917         /*
 918          * Display the previously rendered picture
 919          */
 920         if( p_picture != NULL && p_directbuffer != NULL )
 921         {
 922             /* Display the direct buffer returned by vout_RenderPicture */
 923             if( p_vout->pf_display )
 924             {
 925                 p_vout->pf_display( p_vout, p_directbuffer );
 926             }
 927
 928             /* Reinitialize idle loop count */
 929             i_idle_loops = 0;
 930
 931             /* Tell the vout this was the last picture and that it does not
 932              * need to be forced anymore. */
 933             p_last_picture = p_picture;
 934             p_last_picture->b_force = 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 occured, 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->pf_deactivate )
 972                 p_vout->chroma.p_module->pf_deactivate( VLC_OBJECT(p_vout) );
 973             p_vout->chroma.p_module->pf_activate( VLC_OBJECT(p_vout) );
 974         }
 975     }
 976
 977     /*
 978      * Error loop - wait until the thread destruction is requested
 979      */
 980     if( p_vout->b_error )
 981     {
 982         ErrorThread( p_vout );
 983     }
 984
 985     /* End of thread */
 986     EndThread( p_vout );
 987
 988     /* Destroy thread structures allocated by CreateThread */
 989     DestroyThread( p_vout );
 990 }
 991
 992 /*****************************************************************************
 993  * ErrorThread: RunThread() error loop
 994  *****************************************************************************
 995  * This function is called when an error occured during thread main's loop. The
 996  * thread can still receive feed, but must be ready to terminate as soon as
 997  * possible.
 998  *****************************************************************************/
 999 static void ErrorThread( vout_thread_t *p_vout )
1000 {
1001     /* Wait until a `die' order */
1002     while( !p_vout->b_die )
1003     {
1004         /* Sleep a while */
1005         msleep( VOUT_IDLE_SLEEP );
1006     }
1007 }
1008
1009 /*****************************************************************************
1010  * EndThread: thread destruction
1011  *****************************************************************************
1012  * This function is called when the thread ends after a sucessful
1013  * initialization. It frees all ressources allocated by InitThread.
1014  *****************************************************************************/
1015 static void EndThread( vout_thread_t *p_vout )
1016 {
1017     int     i_index;                                        /* index in heap */
1018
1019 #ifdef STATS
1020     {
1021         struct tms cpu_usage;
1022         times( &cpu_usage );
1023
1024         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1025                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1026     }
1027 #endif
1028
1029     if( !p_vout->b_direct )
1030     {
1031         module_Unneed( p_vout, p_vout->chroma.p_module );
1032     }
1033
1034     /* Destroy all remaining pictures */
1035     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES; i_index++ )
1036     {
1037         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1038         {
1039             free( p_vout->p_picture[i_index].p_data_orig );
1040         }
1041     }
1042
1043     /* Destroy all remaining subpictures */
1044     for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1045     {
1046         if( p_vout->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
1047         {
1048             vout_DestroySubPicture( p_vout,
1049                                     &p_vout->p_subpicture[i_index] );
1050         }
1051     }
1052
1053     if( p_vout->p_text_renderer_module )
1054         module_Unneed( p_vout, p_vout->p_text_renderer_module );
1055
1056     /* Destroy translation tables */
1057     p_vout->pf_end( p_vout );
1058
1059     /* Release the change lock */
1060     vlc_mutex_unlock( &p_vout->change_lock );
1061 }
1062
1063 /*****************************************************************************
1064  * DestroyThread: thread destruction
1065  *****************************************************************************
1066  * This function is called when the thread ends. It frees all ressources
1067  * allocated by CreateThread. Status is available at this stage.
1068  *****************************************************************************/
1069 static void DestroyThread( vout_thread_t *p_vout )
1070 {
1071     /* Destroy the locks */
1072     vlc_mutex_destroy( &p_vout->picture_lock );
1073     vlc_mutex_destroy( &p_vout->subpicture_lock );
1074     vlc_mutex_destroy( &p_vout->change_lock );
1075
1076     /* Release the module */
1077     module_Unneed( p_vout, p_vout->p_module );
1078 }
1079
1080 /* following functions are local */
1081
1082 static int ReduceHeight( int i_ratio )
1083 {
1084     int i_dummy = VOUT_ASPECT_FACTOR;
1085     int i_pgcd  = 1;
1086
1087     if( !i_ratio )
1088     {
1089         return i_pgcd;
1090     }
1091
1092     /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1093     while( !(i_ratio & 1) && !(i_dummy & 1) )
1094     {
1095         i_ratio >>= 1;
1096         i_dummy >>= 1;
1097         i_pgcd  <<= 1;
1098     }
1099
1100     while( !(i_ratio % 3) && !(i_dummy % 3) )
1101     {
1102         i_ratio /= 3;
1103         i_dummy /= 3;
1104         i_pgcd  *= 3;
1105     }
1106
1107     while( !(i_ratio % 5) && !(i_dummy % 5) )
1108     {
1109         i_ratio /= 5;
1110         i_dummy /= 5;
1111         i_pgcd  *= 5;
1112     }
1113
1114     return i_pgcd;
1115 }
1116
1117 /*****************************************************************************
1118  * BinaryLog: computes the base 2 log of a binary value
1119  *****************************************************************************
1120  * This functions is used by MaskToShift, to get a bit index from a binary
1121  * value.
1122  *****************************************************************************/
1123 static int BinaryLog( uint32_t i )
1124 {
1125     int i_log = 0;
1126
1127     if( i == 0 ) return -31337;
1128
1129     if( i & 0xffff0000 ) i_log += 16;
1130     if( i & 0xff00ff00 ) i_log += 8;
1131     if( i & 0xf0f0f0f0 ) i_log += 4;
1132     if( i & 0xcccccccc ) i_log += 2;
1133     if( i & 0xaaaaaaaa ) i_log += 1;
1134
1135     return i_log;
1136 }
1137
1138 /*****************************************************************************
1139  * MaskToShift: transform a color mask into right and left shifts
1140  *****************************************************************************
1141  * This function is used for obtaining color shifts from masks.
1142  *****************************************************************************/
1143 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1144 {
1145     uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
1146
1147     if( !i_mask )
1148     {
1149         *pi_left = *pi_right = 0;
1150         return;
1151     }
1152
1153     /* Get bits */
1154     i_low =  i_mask & (- (int32_t)i_mask);          /* lower bit of the mask */
1155     i_high = i_mask + i_low;                       /* higher bit of the mask */
1156
1157     /* Transform bits into an index */
1158     i_low =  BinaryLog (i_low);
1159     i_high = BinaryLog (i_high);
1160
1161     /* Update pointers and return */
1162     *pi_left =   i_low;
1163     *pi_right = (8 - i_high + i_low);
1164 }
1165
1166 /*****************************************************************************
1167  * InitWindowSize: find the initial dimensions the video window should have.
1168  *****************************************************************************
1169  * This function will check the "width", "height" and "zoom" config options and
1170  * will calculate the size that the video window should have.
1171  *****************************************************************************/
1172 static void InitWindowSize( vout_thread_t *p_vout, int *pi_width,
1173                             int *pi_height )
1174 {
1175     vlc_value_t val;
1176     int i_width, i_height;
1177     uint64_t ll_zoom;
1178
1179 #define FP_FACTOR 1000                             /* our fixed point factor */
1180
1181     var_Get( p_vout, "width", &val );
1182     i_width = val.i_int;
1183     var_Get( p_vout, "height", &val );
1184     i_height = val.i_int;
1185     var_Get( p_vout, "zoom", &val );
1186     ll_zoom = (uint64_t)( FP_FACTOR * val.f_float );
1187
1188     if( i_width > 0 && i_height > 0)
1189     {
1190         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
1191         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
1192         return;
1193     }
1194     else if( i_width > 0 )
1195     {
1196         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
1197         *pi_height = (int)( i_width * ll_zoom * VOUT_ASPECT_FACTOR /
1198                             p_vout->render.i_aspect / FP_FACTOR );
1199         return;
1200     }
1201     else if( i_height > 0 )
1202     {
1203         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
1204         *pi_width = (int)( i_height * ll_zoom * p_vout->render.i_aspect /
1205                            VOUT_ASPECT_FACTOR / FP_FACTOR );
1206         return;
1207     }
1208
1209     if( p_vout->render.i_height * p_vout->render.i_aspect
1210         >= p_vout->render.i_width * VOUT_ASPECT_FACTOR )
1211     {
1212         *pi_width = (int)( p_vout->render.i_height * ll_zoom
1213           * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR / FP_FACTOR );
1214         *pi_height = (int)( p_vout->render.i_height * ll_zoom / FP_FACTOR );
1215     }
1216     else
1217     {
1218         *pi_width = (int)( p_vout->render.i_width * ll_zoom / FP_FACTOR );
1219         *pi_height = (int)( p_vout->render.i_width * ll_zoom
1220           * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect / FP_FACTOR );
1221     }
1222
1223 #undef FP_FACTOR
1224 }
1225
1226 /*****************************************************************************
1227  * vout_VarCallback: generic callback for intf variables
1228  *****************************************************************************/
1229 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1230                       vlc_value_t old_value, vlc_value_t new_value,
1231                       void * unused )
1232 {
1233     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1234     vlc_value_t val;
1235     val.b_bool = VLC_TRUE;
1236     var_Set( p_vout, "intf-change", val );
1237     return VLC_SUCCESS;
1238 }
1239
1240 /*****************************************************************************
1241  * object variables callbacks: a bunch of object variables are used by the
1242  * interfaces to interact with the vout.
1243  *****************************************************************************/
1244 static int FullscreenCallback( vlc_object_t *p_this, char const *psz_cmd,
1245                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1246 {
1247     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1248     input_thread_t *p_input;
1249     vlc_value_t val;
1250
1251     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
1252
1253     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1254                                                  FIND_PARENT );
1255     if( p_input )
1256     {
1257         /* Modify input as well because the vout might have to be restarted */
1258         var_Create( p_input, "fullscreen", VLC_VAR_BOOL );
1259         var_Set( p_input, "fullscreen", newval );
1260
1261         vlc_object_release( p_input );
1262     }
1263
1264     val.b_bool = VLC_TRUE;
1265     var_Set( p_vout, "intf-change", val );
1266     return VLC_SUCCESS;
1267 }
1268
1269 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1270                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1271 {
1272     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1273     input_thread_t *p_input;
1274     vlc_value_t val;
1275
1276     char *psz_mode = newval.psz_string;
1277     char *psz_filter;
1278     unsigned int  i;
1279
1280     psz_filter = config_GetPsz( p_vout, "filter" );
1281
1282     if( !psz_mode || !*psz_mode )
1283     {
1284         config_PutPsz( p_vout, "filter", "" );
1285     }
1286     else
1287     {
1288         if( !psz_filter || !*psz_filter )
1289         {
1290             config_PutPsz( p_vout, "filter", "deinterlace" );
1291         }
1292         else
1293         {
1294             if( strstr( psz_filter, "deinterlace" ) == NULL )
1295             {
1296                 psz_filter = realloc( psz_filter, strlen( psz_filter ) + 20 );
1297                 strcat( psz_filter, ",deinterlace" );
1298             }
1299             config_PutPsz( p_vout, "filter", psz_filter );
1300         }
1301     }
1302
1303     if( psz_filter ) free( psz_filter );
1304
1305
1306     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1307                                                  FIND_PARENT );
1308     if( !p_input ) return VLC_EGENERIC;
1309
1310     if( psz_mode && *psz_mode )
1311     {
1312         val.psz_string = psz_mode;
1313         var_Set( p_vout, "deinterlace-mode", val );
1314         /* Modify input as well because the vout might have to be restarted */
1315         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1316         var_Set( p_input, "deinterlace-mode", val );
1317     }
1318
1319     /* now restart all video streams */
1320     vlc_mutex_lock( &p_input->stream.stream_lock );
1321
1322     p_vout->b_filter_change = VLC_TRUE;
1323
1324 #define ES p_input->stream.pp_es[i]
1325
1326     for( i = 0 ; i < p_input->stream.i_es_number ; i++ )
1327     {
1328         if( ( ES->i_cat == VIDEO_ES ) && ES->p_decoder_fifo != NULL )
1329         {
1330             input_UnselectES( p_input, ES );
1331             input_SelectES( p_input, ES );
1332         }
1333 #undef ES
1334     }
1335     vlc_mutex_unlock( &p_input->stream.stream_lock );
1336
1337     vlc_object_release( p_input );
1338
1339     val.b_bool = VLC_TRUE;
1340     var_Set( p_vout, "intf-change", val );
1341     return VLC_SUCCESS;
1342 }