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 1.230 2003/07/23 22:01:25 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     p_vout->p_text_renderer_module = module_Need( p_vout, "text renderer",
 398                                                   NULL );
 399     if( p_vout->p_text_renderer_module == NULL )
 400     {
 401         msg_Warn( p_vout, "no suitable text renderer module" );
 402         p_vout->pf_add_string = NULL;
 403     }
 404     /* Create a few object variables for interface interaction */
 405     var_Create( p_vout, "fullscreen", VLC_VAR_BOOL );
 406     text.psz_string = _("Fullscreen");
 407     var_Change( p_vout, "fullscreen", VLC_VAR_SETTEXT, &text, NULL );
 408     var_Change( p_vout, "fullscreen", VLC_VAR_INHERITVALUE, &val, NULL );
 409     if( val.b_bool )
 410     {
 411         /* user requested fullscreen */
 412         p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 413     }
 414     var_AddCallback( p_vout, "fullscreen", FullscreenCallback, NULL );
 415
 416     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
 417     text.psz_string = _("Deinterlace");
 418     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
 419     val.psz_string = ""; text.psz_string = _("Disable");
 420     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 421     val.psz_string = "discard"; text.psz_string = _("Discard");
 422     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 423     val.psz_string = "blend"; text.psz_string = _("Blend");
 424     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 425     val.psz_string = "mean"; text.psz_string = _("Mean");
 426     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 427     val.psz_string = "bob"; text.psz_string = _("Bob");
 428     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 429     val.psz_string = "linear"; text.psz_string = _("Linear");
 430     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 431     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 432     {
 433         var_Set( p_vout, "deinterlace", val );
 434     }
 435     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 436
 437     /* Calculate delay created by internal caching */
 438     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 439                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 440     if( p_input_thread )
 441     {
 442         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 443         vlc_object_release( p_input_thread );
 444     }
 445     else
 446     {
 447         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 448     }
 449
 450     if( vlc_thread_create( p_vout, "video output", RunThread,
 451                            VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) )
 452     {
 453         msg_Err( p_vout, "out of memory" );
 454         module_Unneed( p_vout, p_vout->p_module );
 455         vlc_object_destroy( p_vout );
 456         return NULL;
 457     }
 458
 459     return p_vout;
 460 }
 461
 462 /*****************************************************************************
 463  * vout_Destroy: destroys a previously created video output
 464  *****************************************************************************
 465  * Destroy a terminated thread.
 466  * The function will request a destruction of the specified thread. If pi_error
 467  * is NULL, it will return once the thread is destroyed. Else, it will be
 468  * update using one of the THREAD_* constants.
 469  *****************************************************************************/
 470 void vout_Destroy( vout_thread_t *p_vout )
 471 {
 472     vlc_object_t *p_playlist;
 473
 474     /* Request thread destruction */
 475     p_vout->b_die = VLC_TRUE;
 476     vlc_thread_join( p_vout );
 477
 478     var_Destroy( p_vout, "intf-change" );
 479
 480     p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
 481                                   FIND_ANYWHERE );
 482
 483     /* Free structure */
 484     vlc_object_destroy( p_vout );
 485
 486     /* If it was the last vout, tell the interface to show up */
 487     if( p_playlist != NULL )
 488     {
 489         vout_thread_t *p_another_vout = vlc_object_find( p_playlist,
 490                                             VLC_OBJECT_VOUT, FIND_ANYWHERE );
 491         if( p_another_vout == NULL )
 492         {
 493             vlc_value_t val;
 494             val.b_bool = VLC_TRUE;
 495             var_Set( p_playlist, "intf-show", val );
 496         }
 497         else
 498         {
 499             vlc_object_release( p_another_vout );
 500         }
 501         vlc_object_release( p_playlist );
 502     }
 503 }
 504
 505 /*****************************************************************************
 506  * InitThread: initialize video output thread
 507  *****************************************************************************
 508  * This function is called from RunThread and performs the second step of the
 509  * initialization. It returns 0 on success. Note that the thread's flag are not
 510  * modified inside this function.
 511  *****************************************************************************/
 512 static int InitThread( vout_thread_t *p_vout )
 513 {
 514     int i, i_pgcd;
 515
 516     vlc_mutex_lock( &p_vout->change_lock );
 517
 518 #ifdef STATS
 519     p_vout->c_loops = 0;
 520 #endif
 521
 522     /* Initialize output method, it allocates direct buffers for us */
 523     if( p_vout->pf_init( p_vout ) )
 524     {
 525         vlc_mutex_unlock( &p_vout->change_lock );
 526         return VLC_EGENERIC;
 527     }
 528
 529     if( !I_OUTPUTPICTURES )
 530     {
 531         msg_Err( p_vout, "plugin was unable to allocate at least "
 532                          "one direct buffer" );
 533         p_vout->pf_end( p_vout );
 534         vlc_mutex_unlock( &p_vout->change_lock );
 535         return VLC_EGENERIC;
 536     }
 537
 538     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 539     {
 540         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 541                          "our internal buffers must have overflown." );
 542         p_vout->pf_end( p_vout );
 543         vlc_mutex_unlock( &p_vout->change_lock );
 544         return VLC_EGENERIC;
 545     }
 546
 547     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 548
 549 #if 0
 550     if( !p_vout->psz_filter_chain )
 551     {
 552         char *psz_aspect = config_GetPsz( p_vout, "pixel-ratio" );
 553
 554         if( psz_aspect )
 555         {
 556             int i_new_aspect = p_vout->output.i_width * VOUT_ASPECT_FACTOR
 557                                                       * atof( psz_aspect )
 558                                                       / p_vout->output.i_height;
 559             free( psz_aspect );
 560
 561             if( i_new_aspect && i_new_aspect != p_vout->output.i_aspect )
 562             {
 563                 int i_pgcd = ReduceHeight( i_new_aspect );
 564                 msg_Dbg( p_vout, "output ratio forced to %i:%i\n",
 565                          i_new_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
 566                 p_vout->output.i_aspect = i_new_aspect;
 567             }
 568         }
 569     }
 570 #endif
 571
 572     i_pgcd = ReduceHeight( p_vout->render.i_aspect );
 573     msg_Dbg( p_vout,
 574              "picture in %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i",
 575              p_vout->render.i_width, p_vout->render.i_height,
 576              p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma,
 577              p_vout->render.i_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
 578
 579     i_pgcd = ReduceHeight( p_vout->output.i_aspect );
 580     msg_Dbg( p_vout,
 581              "picture out %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i",
 582              p_vout->output.i_width, p_vout->output.i_height,
 583              p_vout->output.i_chroma, (char*)&p_vout->output.i_chroma,
 584              p_vout->output.i_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
 585
 586     /* Calculate shifts from system-updated masks */
 587     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 588                  p_vout->output.i_rmask );
 589     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 590                  p_vout->output.i_gmask );
 591     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 592                  p_vout->output.i_bmask );
 593
 594     /* Check whether we managed to create direct buffers similar to
 595      * the render buffers, ie same size and chroma */
 596     if( ( p_vout->output.i_width == p_vout->render.i_width )
 597      && ( p_vout->output.i_height == p_vout->render.i_height )
 598      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 599     {
 600         /* Cool ! We have direct buffers, we can ask the decoder to
 601          * directly decode into them ! Map the first render buffers to
 602          * the first direct buffers, but keep the first direct buffer
 603          * for memcpy operations */
 604         p_vout->b_direct = 1;
 605
 606         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 607         {
 608             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 609                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 610                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 611             {
 612                 /* We have enough direct buffers so there's no need to
 613                  * try to use system memory buffers. */
 614                 break;
 615             }
 616             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 617             I_RENDERPICTURES++;
 618         }
 619
 620         msg_Dbg( p_vout, "direct render, mapping "
 621                  "render pictures 0-%i to system pictures 1-%i",
 622                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 623     }
 624     else
 625     {
 626         /* Rats... Something is wrong here, we could not find an output
 627          * plugin able to directly render what we decode. See if we can
 628          * find a chroma plugin to do the conversion */
 629         p_vout->b_direct = 0;
 630
 631         /* Choose the best module */
 632         p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL );
 633
 634         if( p_vout->chroma.p_module == NULL )
 635         {
 636             msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
 637                      (char*)&p_vout->render.i_chroma,
 638                      (char*)&p_vout->output.i_chroma );
 639             p_vout->pf_end( p_vout );
 640             vlc_mutex_unlock( &p_vout->change_lock );
 641             return VLC_EGENERIC;
 642         }
 643
 644         msg_Dbg( p_vout, "indirect render, mapping "
 645                  "render pictures 0-%i to system pictures %i-%i",
 646                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 647                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 648
 649         /* Append render buffers after the direct buffers */
 650         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 651         {
 652             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 653             I_RENDERPICTURES++;
 654
 655             /* Check if we have enough render pictures */
 656             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 657                 break;
 658         }
 659     }
 660
 661     /* Link pictures back to their heap */
 662     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 663     {
 664         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 665     }
 666
 667     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 668     {
 669         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 670     }
 671
 672 /* XXX XXX mark thread ready */
 673     return VLC_SUCCESS;
 674 }
 675
 676 /*****************************************************************************
 677  * RunThread: video output thread
 678  *****************************************************************************
 679  * Video output thread. This function does only returns when the thread is
 680  * terminated. It handles the pictures arriving in the video heap and the
 681  * display device events.
 682  *****************************************************************************/
 683 static void RunThread( vout_thread_t *p_vout)
 684 {
 685     int             i_index;                                /* index in heap */
 686     int             i_idle_loops = 0;  /* loops without displaying a picture */
 687     mtime_t         current_date;                            /* current date */
 688     mtime_t         display_date;                            /* display date */
 689
 690     picture_t *     p_picture;                            /* picture pointer */
 691     picture_t *     p_last_picture = NULL;                   /* last picture */
 692     picture_t *     p_directbuffer;              /* direct buffer to display */
 693
 694     subpicture_t *  p_subpic;                          /* subpicture pointer */
 695
 696     /*
 697      * Initialize thread
 698      */
 699     p_vout->b_error = InitThread( p_vout );
 700
 701     /* signal the creation of the vout */
 702     vlc_thread_ready( p_vout );
 703
 704     if( p_vout->b_error )
 705     {
 706         /* Destroy thread structures allocated by Create and InitThread */
 707         DestroyThread( p_vout );
 708         return;
 709     }
 710
 711     /*
 712      * Main loop - it is not executed if an error occured during
 713      * initialization
 714      */
 715     while( (!p_vout->b_die) && (!p_vout->b_error) )
 716     {
 717         /* Initialize loop variables */
 718         p_picture = NULL;
 719         display_date = 0;
 720         current_date = mdate();
 721
 722 #if 0
 723         p_vout->c_loops++;
 724         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 725         {
 726             msg_Dbg( p_vout, "picture heap: %d/%d",
 727                      I_RENDERPICTURES, p_vout->i_heap_size );
 728         }
 729 #endif
 730
 731         /*
 732          * Find the picture to display (the one with the earliest date).
 733          * This operation does not need lock, since only READY_PICTUREs
 734          * are handled. */
 735         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 736         {
 737             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 738                 && ( (p_picture == NULL) ||
 739                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 740             {
 741                 p_picture = PP_RENDERPICTURE[i_index];
 742                 display_date = p_picture->date;
 743             }
 744         }
 745
 746         if( p_picture )
 747         {
 748             /* If we met the last picture, parse again to see whether there is
 749              * a more appropriate one. */
 750             if( p_picture == p_last_picture )
 751             {
 752                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 753                 {
 754                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 755                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 756                         && ((p_picture == p_last_picture) ||
 757                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 758                     {
 759                         p_picture = PP_RENDERPICTURE[i_index];
 760                         display_date = p_picture->date;
 761                     }
 762                 }
 763             }
 764
 765             /* If we found better than the last picture, destroy it */
 766             if( p_last_picture && p_picture != p_last_picture )
 767             {
 768                 vlc_mutex_lock( &p_vout->picture_lock );
 769                 if( p_last_picture->i_refcount )
 770                 {
 771                     p_last_picture->i_status = DISPLAYED_PICTURE;
 772                 }
 773                 else
 774                 {
 775                     p_last_picture->i_status = DESTROYED_PICTURE;
 776                     p_vout->i_heap_size--;
 777                 }
 778                 vlc_mutex_unlock( &p_vout->picture_lock );
 779                 p_last_picture = NULL;
 780             }
 781
 782             /* Compute FPS rate */
 783             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 784                 = display_date;
 785
 786             if( !p_picture->b_force &&
 787                 p_picture != p_last_picture &&
 788                 display_date < current_date + p_vout->render_time )
 789             {
 790                 /* Picture is late: it will be destroyed and the thread
 791                  * will directly choose the next picture */
 792                 vlc_mutex_lock( &p_vout->picture_lock );
 793                 if( p_picture->i_refcount )
 794                 {
 795                     /* Pretend we displayed the picture, but don't destroy
 796                      * it since the decoder might still need it. */
 797                     p_picture->i_status = DISPLAYED_PICTURE;
 798                 }
 799                 else
 800                 {
 801                     /* Destroy the picture without displaying it */
 802                     p_picture->i_status = DESTROYED_PICTURE;
 803                     p_vout->i_heap_size--;
 804                 }
 805                 msg_Warn( p_vout, "late picture skipped ("I64Fd")",
 806                                   current_date - display_date );
 807                 vlc_mutex_unlock( &p_vout->picture_lock );
 808
 809                 continue;
 810             }
 811
 812             if( display_date >
 813                 current_date + p_vout->i_pts_delay +  VOUT_BOGUS_DELAY )
 814             {
 815                 /* Picture is waaay too early: it will be destroyed */
 816                 vlc_mutex_lock( &p_vout->picture_lock );
 817                 if( p_picture->i_refcount )
 818                 {
 819                     /* Pretend we displayed the picture, but don't destroy
 820                      * it since the decoder might still need it. */
 821                     p_picture->i_status = DISPLAYED_PICTURE;
 822                 }
 823                 else
 824                 {
 825                     /* Destroy the picture without displaying it */
 826                     p_picture->i_status = DESTROYED_PICTURE;
 827                     p_vout->i_heap_size--;
 828                 }
 829                 msg_Warn( p_vout, "vout warning: early picture skipped "
 830                           "("I64Fd")", display_date - current_date
 831                           - p_vout->i_pts_delay );
 832                 vlc_mutex_unlock( &p_vout->picture_lock );
 833
 834                 continue;
 835             }
 836
 837             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 838             {
 839                 /* A picture is ready to be rendered, but its rendering date
 840                  * is far from the current one so the thread will perform an
 841                  * empty loop as if no picture were found. The picture state
 842                  * is unchanged */
 843                 p_picture    = NULL;
 844                 display_date = 0;
 845             }
 846             else if( p_picture == p_last_picture )
 847             {
 848                 /* We are asked to repeat the previous picture, but we first
 849                  * wait for a couple of idle loops */
 850                 if( i_idle_loops < 4 )
 851                 {
 852                     p_picture    = NULL;
 853                     display_date = 0;
 854                 }
 855                 else
 856                 {
 857                     /* We set the display date to something high, otherwise
 858                      * we'll have lots of problems with late pictures */
 859                     display_date = current_date + p_vout->render_time;
 860                 }
 861             }
 862         }
 863
 864         if( p_picture == NULL )
 865         {
 866             i_idle_loops++;
 867         }
 868
 869         /*
 870          * Check for subpictures to display
 871          */
 872         p_subpic = vout_SortSubPictures( p_vout, display_date );
 873
 874         /*
 875          * Perform rendering
 876          */
 877         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
 878
 879         /*
 880          * Call the plugin-specific rendering method if there is one
 881          */
 882         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
 883         {
 884             /* Render the direct buffer returned by vout_RenderPicture */
 885             p_vout->pf_render( p_vout, p_directbuffer );
 886         }
 887
 888         /*
 889          * Sleep, wake up
 890          */
 891         if( display_date != 0 && p_directbuffer != NULL )
 892         {
 893             /* Store render time using a sliding mean */
 894             p_vout->render_time += mdate() - current_date;
 895             p_vout->render_time >>= 1;
 896         }
 897
 898         /* Give back change lock */
 899         vlc_mutex_unlock( &p_vout->change_lock );
 900
 901         /* Sleep a while or until a given date */
 902         if( display_date != 0 )
 903         {
 904             mwait( display_date - VOUT_MWAIT_TOLERANCE );
 905         }
 906         else
 907         {
 908             msleep( VOUT_IDLE_SLEEP );
 909         }
 910
 911         /* On awakening, take back lock and send immediately picture
 912          * to display. */
 913         vlc_mutex_lock( &p_vout->change_lock );
 914
 915         /*
 916          * Display the previously rendered picture
 917          */
 918         if( p_picture != NULL && p_directbuffer != NULL )
 919         {
 920             /* Display the direct buffer returned by vout_RenderPicture */
 921             if( p_vout->pf_display )
 922             {
 923                 p_vout->pf_display( p_vout, p_directbuffer );
 924             }
 925
 926             /* Reinitialize idle loop count */
 927             i_idle_loops = 0;
 928
 929             /* Tell the vout this was the last picture and that it does not
 930              * need to be forced anymore. */
 931             p_last_picture = p_picture;
 932             p_last_picture->b_force = 0;
 933         }
 934
 935         /*
 936          * Check events and manage thread
 937          */
 938         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
 939         {
 940             /* A fatal error occured, and the thread must terminate
 941              * immediately, without displaying anything - setting b_error to 1
 942              * causes the immediate end of the main while() loop. */
 943             p_vout->b_error = 1;
 944         }
 945
 946         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 947         {
 948             /* this must only happen when the vout plugin is incapable of
 949              * rescaling the picture itself. In this case we need to destroy
 950              * the current picture buffers and recreate new ones with the right
 951              * dimensions */
 952             int i;
 953
 954             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 955
 956             p_vout->pf_end( p_vout );
 957             for( i = 0; i < I_OUTPUTPICTURES; i++ )
 958                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
 959
 960             I_OUTPUTPICTURES = 0;
 961             if( p_vout->pf_init( p_vout ) )
 962             {
 963                 msg_Err( p_vout, "cannot resize display" );
 964                 /* FIXME: pf_end will be called again in EndThread() */
 965                 p_vout->b_error = 1;
 966             }
 967
 968             /* Need to reinitialise the chroma plugin */
 969             if( p_vout->chroma.p_module->pf_deactivate )
 970                 p_vout->chroma.p_module->pf_deactivate( VLC_OBJECT(p_vout) );
 971             p_vout->chroma.p_module->pf_activate( VLC_OBJECT(p_vout) );
 972         }
 973     }
 974
 975     /*
 976      * Error loop - wait until the thread destruction is requested
 977      */
 978     if( p_vout->b_error )
 979     {
 980         ErrorThread( p_vout );
 981     }
 982
 983     /* End of thread */
 984     EndThread( p_vout );
 985
 986     /* Destroy thread structures allocated by CreateThread */
 987     DestroyThread( p_vout );
 988 }
 989
 990 /*****************************************************************************
 991  * ErrorThread: RunThread() error loop
 992  *****************************************************************************
 993  * This function is called when an error occured during thread main's loop. The
 994  * thread can still receive feed, but must be ready to terminate as soon as
 995  * possible.
 996  *****************************************************************************/
 997 static void ErrorThread( vout_thread_t *p_vout )
 998 {
 999     /* Wait until a `die' order */
1000     while( !p_vout->b_die )
1001     {
1002         /* Sleep a while */
1003         msleep( VOUT_IDLE_SLEEP );
1004     }
1005 }
1006
1007 /*****************************************************************************
1008  * EndThread: thread destruction
1009  *****************************************************************************
1010  * This function is called when the thread ends after a sucessful
1011  * initialization. It frees all ressources allocated by InitThread.
1012  *****************************************************************************/
1013 static void EndThread( vout_thread_t *p_vout )
1014 {
1015     int     i_index;                                        /* index in heap */
1016
1017 #ifdef STATS
1018     {
1019         struct tms cpu_usage;
1020         times( &cpu_usage );
1021
1022         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1023                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1024     }
1025 #endif
1026
1027     if( !p_vout->b_direct )
1028     {
1029         module_Unneed( p_vout, p_vout->chroma.p_module );
1030     }
1031
1032     /* Destroy all remaining pictures */
1033     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES; i_index++ )
1034     {
1035         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1036         {
1037             free( p_vout->p_picture[i_index].p_data_orig );
1038         }
1039     }
1040
1041     /* Destroy all remaining subpictures */
1042     for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1043     {
1044         if( p_vout->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
1045         {
1046             vout_DestroySubPicture( p_vout,
1047                                     &p_vout->p_subpicture[i_index] );
1048         }
1049     }
1050
1051     module_Unneed( p_vout, p_vout->p_text_renderer_module );
1052
1053     /* Destroy translation tables */
1054     p_vout->pf_end( p_vout );
1055
1056     /* Release the change lock */
1057     vlc_mutex_unlock( &p_vout->change_lock );
1058 }
1059
1060 /*****************************************************************************
1061  * DestroyThread: thread destruction
1062  *****************************************************************************
1063  * This function is called when the thread ends. It frees all ressources
1064  * allocated by CreateThread. Status is available at this stage.
1065  *****************************************************************************/
1066 static void DestroyThread( vout_thread_t *p_vout )
1067 {
1068     /* Destroy the locks */
1069     vlc_mutex_destroy( &p_vout->picture_lock );
1070     vlc_mutex_destroy( &p_vout->subpicture_lock );
1071     vlc_mutex_destroy( &p_vout->change_lock );
1072
1073     /* Release the module */
1074     module_Unneed( p_vout, p_vout->p_module );
1075 }
1076
1077 /* following functions are local */
1078
1079 static int ReduceHeight( int i_ratio )
1080 {
1081     int i_dummy = VOUT_ASPECT_FACTOR;
1082     int i_pgcd  = 1;
1083
1084     if( !i_ratio )
1085     {
1086         return i_pgcd;
1087     }
1088
1089     /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1090     while( !(i_ratio & 1) && !(i_dummy & 1) )
1091     {
1092         i_ratio >>= 1;
1093         i_dummy >>= 1;
1094         i_pgcd  <<= 1;
1095     }
1096
1097     while( !(i_ratio % 3) && !(i_dummy % 3) )
1098     {
1099         i_ratio /= 3;
1100         i_dummy /= 3;
1101         i_pgcd  *= 3;
1102     }
1103
1104     while( !(i_ratio % 5) && !(i_dummy % 5) )
1105     {
1106         i_ratio /= 5;
1107         i_dummy /= 5;
1108         i_pgcd  *= 5;
1109     }
1110
1111     return i_pgcd;
1112 }
1113
1114 /*****************************************************************************
1115  * BinaryLog: computes the base 2 log of a binary value
1116  *****************************************************************************
1117  * This functions is used by MaskToShift, to get a bit index from a binary
1118  * value.
1119  *****************************************************************************/
1120 static int BinaryLog( uint32_t i )
1121 {
1122     int i_log = 0;
1123
1124     if( i == 0 ) return -31337;
1125
1126     if( i & 0xffff0000 ) i_log += 16;
1127     if( i & 0xff00ff00 ) i_log += 8;
1128     if( i & 0xf0f0f0f0 ) i_log += 4;
1129     if( i & 0xcccccccc ) i_log += 2;
1130     if( i & 0xaaaaaaaa ) i_log += 1;
1131
1132     return i_log;
1133 }
1134
1135 /*****************************************************************************
1136  * MaskToShift: transform a color mask into right and left shifts
1137  *****************************************************************************
1138  * This function is used for obtaining color shifts from masks.
1139  *****************************************************************************/
1140 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1141 {
1142     uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
1143
1144     if( !i_mask )
1145     {
1146         *pi_left = *pi_right = 0;
1147         return;
1148     }
1149
1150     /* Get bits */
1151     i_low =  i_mask & (- (int32_t)i_mask);          /* lower bit of the mask */
1152     i_high = i_mask + i_low;                       /* higher bit of the mask */
1153
1154     /* Transform bits into an index */
1155     i_low =  BinaryLog (i_low);
1156     i_high = BinaryLog (i_high);
1157
1158     /* Update pointers and return */
1159     *pi_left =   i_low;
1160     *pi_right = (8 - i_high + i_low);
1161 }
1162
1163 /*****************************************************************************
1164  * InitWindowSize: find the initial dimensions the video window should have.
1165  *****************************************************************************
1166  * This function will check the "width", "height" and "zoom" config options and
1167  * will calculate the size that the video window should have.
1168  *****************************************************************************/
1169 static void InitWindowSize( vout_thread_t *p_vout, int *pi_width,
1170                             int *pi_height )
1171 {
1172     vlc_value_t val;
1173     int i_width, i_height;
1174     uint64_t ll_zoom;
1175
1176 #define FP_FACTOR 1000                             /* our fixed point factor */
1177
1178     var_Get( p_vout, "width", &val );
1179     i_width = val.i_int;
1180     var_Get( p_vout, "height", &val );
1181     i_height = val.i_int;
1182     var_Get( p_vout, "zoom", &val );
1183     ll_zoom = (uint64_t)( FP_FACTOR * val.f_float );
1184
1185     if( i_width > 0 && i_height > 0)
1186     {
1187         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
1188         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
1189         return;
1190     }
1191     else if( i_width > 0 )
1192     {
1193         *pi_width = (int)( i_width * ll_zoom / FP_FACTOR );
1194         *pi_height = (int)( i_width * ll_zoom * VOUT_ASPECT_FACTOR /
1195                             p_vout->render.i_aspect / FP_FACTOR );
1196         return;
1197     }
1198     else if( i_height > 0 )
1199     {
1200         *pi_height = (int)( i_height * ll_zoom / FP_FACTOR );
1201         *pi_width = (int)( i_height * ll_zoom * p_vout->render.i_aspect /
1202                            VOUT_ASPECT_FACTOR / FP_FACTOR );
1203         return;
1204     }
1205
1206     if( p_vout->render.i_height * p_vout->render.i_aspect
1207         >= p_vout->render.i_width * VOUT_ASPECT_FACTOR )
1208     {
1209         *pi_width = (int)( p_vout->render.i_height * ll_zoom
1210           * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR / FP_FACTOR );
1211         *pi_height = (int)( p_vout->render.i_height * ll_zoom / FP_FACTOR );
1212     }
1213     else
1214     {
1215         *pi_width = (int)( p_vout->render.i_width * ll_zoom / FP_FACTOR );
1216         *pi_height = (int)( p_vout->render.i_width * ll_zoom
1217           * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect / FP_FACTOR );
1218     }
1219
1220 #undef FP_FACTOR
1221 }
1222
1223 /*****************************************************************************
1224  * vout_VarCallback: generic callback for intf variables
1225  *****************************************************************************/
1226 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1227                       vlc_value_t old_value, vlc_value_t new_value,
1228                       void * unused )
1229 {
1230     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1231     vlc_value_t val;
1232     val.b_bool = VLC_TRUE;
1233     var_Set( p_vout, "intf-change", val );
1234     return VLC_SUCCESS;
1235 }
1236
1237 /*****************************************************************************
1238  * object variables callbacks: a bunch of object variables are used by the
1239  * interfaces to interact with the vout.
1240  *****************************************************************************/
1241 static int FullscreenCallback( vlc_object_t *p_this, char const *psz_cmd,
1242                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1243 {
1244     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1245     input_thread_t *p_input;
1246     vlc_value_t val;
1247
1248     p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
1249
1250     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1251                                                  FIND_PARENT );
1252     if( p_input )
1253     {
1254         /* Modify input as well because the vout might have to be restarted */
1255         var_Create( p_input, "fullscreen", VLC_VAR_BOOL );
1256         var_Set( p_input, "fullscreen", newval );
1257
1258         vlc_object_release( p_input );
1259     }
1260
1261     val.b_bool = VLC_TRUE;
1262     var_Set( p_vout, "intf-change", val );
1263     return VLC_SUCCESS;
1264 }
1265
1266 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1267                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1268 {
1269     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1270     input_thread_t *p_input;
1271     vlc_value_t val;
1272
1273     char *psz_mode = newval.psz_string;
1274     char *psz_filter;
1275     unsigned int  i;
1276
1277     psz_filter = config_GetPsz( p_vout, "filter" );
1278
1279     if( !psz_mode || !*psz_mode )
1280     {
1281         config_PutPsz( p_vout, "filter", "" );
1282     }
1283     else
1284     {
1285         if( !psz_filter || !*psz_filter )
1286         {
1287             config_PutPsz( p_vout, "filter", "deinterlace" );
1288         }
1289         else
1290         {
1291             if( strstr( psz_filter, "deinterlace" ) == NULL )
1292             {
1293                 psz_filter = realloc( psz_filter, strlen( psz_filter ) + 20 );
1294                 strcat( psz_filter, ",deinterlace" );
1295             }
1296             config_PutPsz( p_vout, "filter", psz_filter );
1297         }
1298     }
1299
1300     if( psz_filter ) free( psz_filter );
1301
1302
1303     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1304                                                  FIND_PARENT );
1305     if( !p_input ) return VLC_EGENERIC;
1306
1307     if( psz_mode && *psz_mode )
1308     {
1309         val.psz_string = psz_mode;
1310         var_Set( p_vout, "deinterlace-mode", val );
1311         /* Modify input as well because the vout might have to be restarted */
1312         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1313         var_Set( p_input, "deinterlace-mode", val );
1314     }
1315
1316     /* now restart all video streams */
1317     vlc_mutex_lock( &p_input->stream.stream_lock );
1318
1319     p_vout->b_filter_change = VLC_TRUE;
1320
1321 #define ES p_input->stream.pp_es[i]
1322
1323     for( i = 0 ; i < p_input->stream.i_es_number ; i++ )
1324     {
1325         if( ( ES->i_cat == VIDEO_ES ) && ES->p_decoder_fifo != NULL )
1326         {
1327             input_UnselectES( p_input, ES );
1328             input_SelectES( p_input, ES );
1329         }
1330 #undef ES
1331     }
1332     vlc_mutex_unlock( &p_input->stream.stream_lock );
1333
1334     vlc_object_release( p_input );
1335
1336     val.b_bool = VLC_TRUE;
1337     var_Set( p_vout, "intf-change", val );
1338     return VLC_SUCCESS;
1339 }