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

   1 /*****************************************************************************
   2  * video_output.c : video output thread
   3  *
   4  * This module describes the programming interface for video output threads.
   5  * It includes functions allowing to open a new thread, send pictures to a
   6  * thread, and destroy a previously oppened video output thread.
   7  *****************************************************************************
   8  * Copyright (C) 2000-2004 the VideoLAN team
   9  * $Id$
  10  *
  11  * Authors: Vincent Seguin <seguin@via.ecp.fr>
  12  *          Gildas Bazin <gbazin@videolan.org>
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  27  *****************************************************************************/
  28
  29 /*****************************************************************************
  30  * Preamble
  31  *****************************************************************************/
  32 #include <stdlib.h>                                                /* free() */
  33
  34 #include <vlc/vlc.h>
  35
  36 #ifdef HAVE_SYS_TIMES_H
  37 #   include <sys/times.h>
  38 #endif
  39
  40 #include "vlc_video.h"
  41 #include "video_output.h"
  42 #include "vlc_spu.h"
  43 #include <vlc/input.h>                 /* for input_thread_t and i_pts_delay */
  44 #include "vlc_playlist.h"
  45
  46 #include "vlc_filter.h"
  47 #include <vlc/sout.h> /* sout_CfgParse */
  48
  49 #if defined( __APPLE__ )
  50 #include "darwin_specific.h"
  51 #endif
  52
  53 /*****************************************************************************
  54  * Local prototypes
  55  *****************************************************************************/
  56 static int      InitThread        ( vout_thread_t * );
  57 static void     RunThread         ( vout_thread_t * );
  58 static void     ErrorThread       ( vout_thread_t * );
  59 static void     EndThread         ( vout_thread_t * );
  60 static void     DestroyThread     ( vout_thread_t * );
  61
  62 static void     AspectRatio       ( int, int *, int * );
  63 static int      BinaryLog         ( uint32_t );
  64 static void     MaskToShift       ( int *, int *, uint32_t );
  65
  66 /* Object variables callbacks */
  67 static int DeinterlaceCallback( vlc_object_t *, char const *,
  68                                 vlc_value_t, vlc_value_t, void * );
  69 static int FilterCallback( vlc_object_t *, char const *,
  70                            vlc_value_t, vlc_value_t, void * );
  71 static int VideoFilter2Callback( vlc_object_t *, char const *,
  72                                  vlc_value_t, vlc_value_t, void * );
  73
  74 /* From vout_intf.c */
  75 int vout_Snapshot( vout_thread_t *, picture_t * );
  76
  77 /* Video filter2 parsing */
  78 static int ParseVideoFilter2Chain( vout_thread_t *, char * );
  79 static void RemoveVideoFilters2( vout_thread_t *p_vout );
  80
  81 /*****************************************************************************
  82  * Video Filter2 functions
  83  *****************************************************************************/
  84 struct filter_owner_sys_t
  85 {
  86     vout_thread_t *p_vout;
  87 };
  88
  89 static picture_t *video_new_buffer_filter( filter_t *p_filter )
  90 {
  91     picture_t *p_picture;
  92     vout_thread_t *p_vout = p_filter->p_owner->p_vout;
  93
  94     p_picture = vout_CreatePicture( p_vout, 0, 0, 0 );
  95
  96     return p_picture;
  97 }
  98
  99 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
 100 {
 101     vout_DestroyPicture( p_filter->p_owner->p_vout, p_pic );
 102 }
 103
 104 /*****************************************************************************
 105  * vout_Request: find a video output thread, create one, or destroy one.
 106  *****************************************************************************
 107  * This function looks for a video output thread matching the current
 108  * properties. If not found, it spawns a new one.
 109  *****************************************************************************/
 110 vout_thread_t *__vout_Request( vlc_object_t *p_this, vout_thread_t *p_vout,
 111                                video_format_t *p_fmt )
 112 {
 113     if( !p_fmt )
 114     {
 115         /* Reattach video output to input before bailing out */
 116         if( p_vout )
 117         {
 118             vlc_object_t *p_playlist;
 119
 120             p_playlist = vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
 121                                           FIND_ANYWHERE );
 122
 123             if( p_playlist )
 124             {
 125                 spu_Attach( p_vout->p_spu, p_this, VLC_FALSE );
 126                 vlc_object_detach( p_vout );
 127                 vlc_object_attach( p_vout, p_playlist );
 128
 129                 vlc_object_release( p_playlist );
 130             }
 131             else
 132             {
 133                 msg_Dbg( p_this, "cannot find playlist, destroying vout" );
 134                 vlc_object_detach( p_vout );
 135                 vout_Destroy( p_vout );
 136             }
 137         }
 138         return NULL;
 139     }
 140
 141     /* If a video output was provided, lock it, otherwise look for one. */
 142     if( p_vout )
 143     {
 144         vlc_object_yield( p_vout );
 145     }
 146     else
 147     {
 148         p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD );
 149
 150         if( !p_vout )
 151         {
 152             playlist_t *p_playlist;
 153
 154             p_playlist = vlc_object_find( p_this,
 155                                           VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
 156             if( p_playlist )
 157             {
 158                 vlc_mutex_lock( &p_playlist->gc_lock );
 159                 p_vout = vlc_object_find( p_playlist,
 160                                           VLC_OBJECT_VOUT, FIND_CHILD );
 161                 /* only first children of p_input for unused vout */
 162                 if( p_vout && p_vout->p_parent != (vlc_object_t *)p_playlist )
 163                 {
 164                     vlc_object_release( p_vout );
 165                     p_vout = NULL;
 166                 }
 167                 vlc_mutex_unlock( &p_playlist->gc_lock );
 168                 vlc_object_release( p_playlist );
 169             }
 170         }
 171     }
 172
 173     /* If we now have a video output, check it has the right properties */
 174     if( p_vout )
 175     {
 176         char *psz_filter_chain;
 177         vlc_value_t val;
 178
 179         /* We don't directly check for the "vout-filter" variable for obvious
 180          * performance reasons. */
 181         if( p_vout->b_filter_change )
 182         {
 183             var_Get( p_vout, "vout-filter", &val );
 184             psz_filter_chain = val.psz_string;
 185
 186             if( psz_filter_chain && !*psz_filter_chain )
 187             {
 188                 free( psz_filter_chain );
 189                 psz_filter_chain = NULL;
 190             }
 191             if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
 192             {
 193                 free( p_vout->psz_filter_chain );
 194                 p_vout->psz_filter_chain = NULL;
 195             }
 196
 197             if( !psz_filter_chain && !p_vout->psz_filter_chain )
 198             {
 199                 p_vout->b_filter_change = VLC_FALSE;
 200             }
 201
 202             if( psz_filter_chain ) free( psz_filter_chain );
 203         }
 204
 205         if( ( p_vout->fmt_render.i_width != p_fmt->i_width ) ||
 206             ( p_vout->fmt_render.i_height != p_fmt->i_height ) ||
 207             ( p_vout->fmt_render.i_chroma != p_fmt->i_chroma ) ||
 208             ( p_vout->fmt_render.i_aspect != p_fmt->i_aspect ) ||
 209             p_vout->b_filter_change )
 210         {
 211             /* We are not interested in this format, close this vout */
 212             vlc_object_detach( p_vout );
 213             vlc_object_release( p_vout );
 214             vout_Destroy( p_vout );
 215             p_vout = NULL;
 216         }
 217         else
 218         {
 219             /* This video output is cool! Hijack it. */
 220             vlc_object_detach( p_vout );
 221             spu_Attach( p_vout->p_spu, p_this, VLC_TRUE );
 222             vlc_object_attach( p_vout, p_this );
 223             vlc_object_release( p_vout );
 224         }
 225     }
 226
 227     if( !p_vout )
 228     {
 229         msg_Dbg( p_this, "no usable vout present, spawning one" );
 230
 231         p_vout = vout_Create( p_this, p_fmt );
 232     }
 233
 234     return p_vout;
 235 }
 236
 237 /*****************************************************************************
 238  * vout_Create: creates a new video output thread
 239  *****************************************************************************
 240  * This function creates a new video output thread, and returns a pointer
 241  * to its description. On error, it returns NULL.
 242  *****************************************************************************/
 243 vout_thread_t * __vout_Create( vlc_object_t *p_parent, video_format_t *p_fmt )
 244 {
 245     vout_thread_t  * p_vout;                            /* thread descriptor */
 246     input_thread_t * p_input_thread;
 247     int              i_index;                               /* loop variable */
 248     char           * psz_plugin;
 249     vlc_value_t      val, text;
 250
 251     unsigned int i_width = p_fmt->i_width;
 252     unsigned int i_height = p_fmt->i_height;
 253     vlc_fourcc_t i_chroma = p_fmt->i_chroma;
 254     unsigned int i_aspect = p_fmt->i_aspect;
 255
 256     /* Allocate descriptor */
 257     p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
 258     if( p_vout == NULL )
 259     {
 260         msg_Err( p_parent, "out of memory" );
 261         return NULL;
 262     }
 263
 264     /* Initialize pictures - translation tables and functions
 265      * will be initialized later in InitThread */
 266     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
 267     {
 268         p_vout->p_picture[i_index].pf_lock = NULL;
 269         p_vout->p_picture[i_index].pf_unlock = NULL;
 270         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 271         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 272         p_vout->p_picture[i_index].b_slow   = 0;
 273     }
 274
 275     /* No images in the heap */
 276     p_vout->i_heap_size = 0;
 277
 278     /* Initialize the rendering heap */
 279     I_RENDERPICTURES = 0;
 280
 281     vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
 282                  p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 283     p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
 284     p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
 285
 286     p_vout->render.i_width    = i_width;
 287     p_vout->render.i_height   = i_height;
 288     p_vout->render.i_chroma   = i_chroma;
 289     p_vout->render.i_aspect   = i_aspect;
 290
 291     p_vout->render.i_rmask    = 0;
 292     p_vout->render.i_gmask    = 0;
 293     p_vout->render.i_bmask    = 0;
 294
 295     p_vout->render.i_last_used_pic = -1;
 296     p_vout->render.b_allow_modify_pics = 1;
 297
 298     /* Zero the output heap */
 299     I_OUTPUTPICTURES = 0;
 300     p_vout->output.i_width    = 0;
 301     p_vout->output.i_height   = 0;
 302     p_vout->output.i_chroma   = 0;
 303     p_vout->output.i_aspect   = 0;
 304
 305     p_vout->output.i_rmask    = 0;
 306     p_vout->output.i_gmask    = 0;
 307     p_vout->output.i_bmask    = 0;
 308
 309     /* Initialize misc stuff */
 310     p_vout->i_changes    = 0;
 311     p_vout->f_gamma      = 0;
 312     p_vout->b_grayscale  = 0;
 313     p_vout->b_info       = 0;
 314     p_vout->b_interface  = 0;
 315     p_vout->b_scale      = 1;
 316     p_vout->b_fullscreen = 0;
 317     p_vout->i_alignment  = 0;
 318     p_vout->render_time  = 10;
 319     p_vout->c_fps_samples = 0;
 320     p_vout->b_filter_change = 0;
 321     p_vout->pf_control = 0;
 322     p_vout->p_parent_intf = 0;
 323     p_vout->i_par_num = p_vout->i_par_den = 1;
 324
 325     /* Initialize locks */
 326     vlc_mutex_init( p_vout, &p_vout->picture_lock );
 327     vlc_mutex_init( p_vout, &p_vout->change_lock );
 328
 329     /* Mouse coordinates */
 330     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 331     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 332     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 333     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 334     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 335
 336     /* Initialize subpicture unit */
 337     p_vout->p_spu = spu_Create( p_vout );
 338     spu_Attach( p_vout->p_spu, p_parent, VLC_TRUE );
 339
 340     /* Attach the new object now so we can use var inheritance below */
 341     vlc_object_attach( p_vout, p_parent );
 342
 343     spu_Init( p_vout->p_spu );
 344
 345     /* Take care of some "interface/control" related initialisations */
 346     vout_IntfInit( p_vout );
 347
 348     /* If the parent is not a VOUT object, that means we are at the start of
 349      * the video output pipe */
 350     if( p_parent->i_object_type != VLC_OBJECT_VOUT )
 351     {
 352         /* Look for the default filter configuration */
 353         var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 354         var_Get( p_vout, "vout-filter", &val );
 355         p_vout->psz_filter_chain = val.psz_string;
 356
 357         /* Apply video filter2 objects on the first vout */
 358         var_Create( p_vout, "video-filter",
 359                     VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 360         var_Get( p_vout, "video-filter", &val );
 361         ParseVideoFilter2Chain( p_vout, val.psz_string );
 362         free( val.psz_string );
 363     }
 364     else
 365     {
 366         /* continue the parent's filter chain */
 367         char *psz_end;
 368
 369         psz_end = strchr( ((vout_thread_t *)p_parent)->psz_filter_chain, ':' );
 370         if( psz_end && *(psz_end+1) )
 371             p_vout->psz_filter_chain = strdup( psz_end+1 );
 372         else p_vout->psz_filter_chain = NULL;
 373
 374         /* Create a video filter2 var ... but don't inherit values */
 375         var_Create( p_vout, "video-filter", VLC_VAR_STRING );
 376         ParseVideoFilter2Chain( p_vout, NULL );
 377     }
 378
 379     var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
 380     p_vout->b_vfilter_change = VLC_TRUE;
 381     p_vout->i_vfilters = 0;
 382
 383     /* Choose the video output module */
 384     if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 385     {
 386         var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 387         var_Get( p_vout, "vout", &val );
 388         psz_plugin = val.psz_string;
 389     }
 390     else
 391     {
 392         /* the filter chain is a string list of filters separated by double
 393          * colons */
 394         char *psz_end;
 395
 396         psz_end = strchr( p_vout->psz_filter_chain, ':' );
 397         if( psz_end )
 398             psz_plugin = strndup( p_vout->psz_filter_chain,
 399                                   psz_end - p_vout->psz_filter_chain );
 400         else psz_plugin = strdup( p_vout->psz_filter_chain );
 401     }
 402
 403     /* Create the vout thread */
 404     p_vout->p_module = module_Need( p_vout,
 405         ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
 406         "video filter" : "video output", psz_plugin, 0 );
 407
 408     if( psz_plugin ) free( psz_plugin );
 409     if( p_vout->p_module == NULL )
 410     {
 411         msg_Err( p_vout, "no suitable vout module" );
 412         vlc_object_detach( p_vout );
 413         vlc_object_destroy( p_vout );
 414         return NULL;
 415     }
 416
 417     /* Create a few object variables for interface interaction */
 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     val.psz_string = "x"; text.psz_string = "X";
 434     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 435
 436     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 437     {
 438         var_Set( p_vout, "deinterlace", val );
 439         if( val.psz_string ) free( val.psz_string );
 440     }
 441     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 442
 443
 444     var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 445     text.psz_string = _("Filters");
 446     var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
 447     var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
 448
 449     /* Calculate delay created by internal caching */
 450     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 451                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 452     if( p_input_thread )
 453     {
 454         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 455         vlc_object_release( p_input_thread );
 456     }
 457     else
 458     {
 459         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 460     }
 461
 462     if( vlc_thread_create( p_vout, "video output", RunThread,
 463                            VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) )
 464     {
 465         msg_Err( p_vout, "out of memory" );
 466         module_Unneed( p_vout, p_vout->p_module );
 467         vlc_object_detach( p_vout );
 468         vlc_object_destroy( p_vout );
 469         return NULL;
 470     }
 471
 472     if( p_vout->b_error )
 473     {
 474         msg_Err( p_vout, "video output creation failed" );
 475
 476         /* Make sure the thread is destroyed */
 477         p_vout->b_die = VLC_TRUE;
 478
 479         vlc_thread_join( p_vout );
 480
 481         vlc_object_detach( p_vout );
 482         vlc_object_destroy( p_vout );
 483         return NULL;
 484     }
 485
 486     return p_vout;
 487 }
 488
 489 /*****************************************************************************
 490  * vout_Destroy: destroys a previously created video output
 491  *****************************************************************************
 492  * Destroy a terminated thread.
 493  * The function will request a destruction of the specified thread. If pi_error
 494  * is NULL, it will return once the thread is destroyed. Else, it will be
 495  * update using one of the THREAD_* constants.
 496  *****************************************************************************/
 497 void vout_Destroy( vout_thread_t *p_vout )
 498 {
 499     vlc_object_t *p_playlist;
 500
 501     /* Request thread destruction */
 502     p_vout->b_die = VLC_TRUE;
 503     vlc_thread_join( p_vout );
 504
 505     var_Destroy( p_vout, "intf-change" );
 506
 507     p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
 508                                   FIND_ANYWHERE );
 509
 510     if( p_vout->psz_filter_chain ) free( p_vout->psz_filter_chain );
 511
 512     /* Free structure */
 513     vlc_object_destroy( p_vout );
 514
 515     /* If it was the last vout, tell the interface to show up */
 516     if( p_playlist != NULL )
 517     {
 518         vout_thread_t *p_another_vout = vlc_object_find( p_playlist,
 519                                             VLC_OBJECT_VOUT, FIND_ANYWHERE );
 520         if( p_another_vout == NULL )
 521         {
 522             vlc_value_t val;
 523             val.b_bool = VLC_TRUE;
 524             var_Set( p_playlist, "intf-show", val );
 525         }
 526         else
 527         {
 528             vlc_object_release( p_another_vout );
 529         }
 530         vlc_object_release( p_playlist );
 531     }
 532 }
 533
 534 /*****************************************************************************
 535  * InitThread: initialize video output thread
 536  *****************************************************************************
 537  * This function is called from RunThread and performs the second step of the
 538  * initialization. It returns 0 on success. Note that the thread's flag are not
 539  * modified inside this function.
 540  *****************************************************************************/
 541 static int InitThread( vout_thread_t *p_vout )
 542 {
 543     int i, i_aspect_x, i_aspect_y;
 544
 545     vlc_mutex_lock( &p_vout->change_lock );
 546
 547 #ifdef STATS
 548     p_vout->c_loops = 0;
 549 #endif
 550
 551     /* Initialize output method, it allocates direct buffers for us */
 552     if( p_vout->pf_init( p_vout ) )
 553     {
 554         vlc_mutex_unlock( &p_vout->change_lock );
 555         return VLC_EGENERIC;
 556     }
 557
 558     if( !I_OUTPUTPICTURES )
 559     {
 560         msg_Err( p_vout, "plugin was unable to allocate at least "
 561                          "one direct buffer" );
 562         p_vout->pf_end( p_vout );
 563         vlc_mutex_unlock( &p_vout->change_lock );
 564         return VLC_EGENERIC;
 565     }
 566
 567     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 568     {
 569         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 570                          "our internal buffers must have overflown." );
 571         p_vout->pf_end( p_vout );
 572         vlc_mutex_unlock( &p_vout->change_lock );
 573         return VLC_EGENERIC;
 574     }
 575
 576     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 577
 578     AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );
 579
 580     msg_Dbg( p_vout, "picture in %ix%i (%i,%i,%ix%i), "
 581              "chroma %4.4s, ar %i:%i, sar %i:%i",
 582              p_vout->fmt_render.i_width, p_vout->fmt_render.i_height,
 583              p_vout->fmt_render.i_x_offset, p_vout->fmt_render.i_y_offset,
 584              p_vout->fmt_render.i_visible_width,
 585              p_vout->fmt_render.i_visible_height,
 586              (char*)&p_vout->fmt_render.i_chroma,
 587              i_aspect_x, i_aspect_y,
 588              p_vout->fmt_render.i_sar_num, p_vout->fmt_render.i_sar_den );
 589
 590     AspectRatio( p_vout->fmt_in.i_aspect, &i_aspect_x, &i_aspect_y );
 591
 592     msg_Dbg( p_vout, "picture user %ix%i (%i,%i,%ix%i), "
 593              "chroma %4.4s, ar %i:%i, sar %i:%i",
 594              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 595              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 596              p_vout->fmt_in.i_visible_width,
 597              p_vout->fmt_in.i_visible_height,
 598              (char*)&p_vout->fmt_in.i_chroma,
 599              i_aspect_x, i_aspect_y,
 600              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 601
 602     if( !p_vout->fmt_out.i_width || !p_vout->fmt_out.i_height )
 603     {
 604         p_vout->fmt_out.i_width = p_vout->fmt_out.i_visible_width =
 605             p_vout->output.i_width;
 606         p_vout->fmt_out.i_height = p_vout->fmt_out.i_visible_height =
 607             p_vout->output.i_height;
 608         p_vout->fmt_out.i_x_offset =  p_vout->fmt_out.i_y_offset = 0;
 609
 610         p_vout->fmt_out.i_aspect = p_vout->output.i_aspect;
 611         p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 612     }
 613     if( !p_vout->fmt_out.i_sar_num || !p_vout->fmt_out.i_sar_num )
 614     {
 615         p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_aspect *
 616             p_vout->fmt_out.i_height;
 617         p_vout->fmt_out.i_sar_den = VOUT_ASPECT_FACTOR *
 618             p_vout->fmt_out.i_width;
 619     }
 620
 621     vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
 622                  p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
 623
 624     AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
 625
 626     msg_Dbg( p_vout, "picture out %ix%i (%i,%i,%ix%i), "
 627              "chroma %4.4s, ar %i:%i, sar %i:%i",
 628              p_vout->fmt_out.i_width, p_vout->fmt_out.i_height,
 629              p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
 630              p_vout->fmt_out.i_visible_width,
 631              p_vout->fmt_out.i_visible_height,
 632              (char*)&p_vout->fmt_out.i_chroma,
 633              i_aspect_x, i_aspect_y,
 634              p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den );
 635
 636     /* Calculate shifts from system-updated masks */
 637     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 638                  p_vout->output.i_rmask );
 639     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 640                  p_vout->output.i_gmask );
 641     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 642                  p_vout->output.i_bmask );
 643
 644     /* Check whether we managed to create direct buffers similar to
 645      * the render buffers, ie same size and chroma */
 646     if( ( p_vout->output.i_width == p_vout->render.i_width )
 647      && ( p_vout->output.i_height == p_vout->render.i_height )
 648      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 649     {
 650         /* Cool ! We have direct buffers, we can ask the decoder to
 651          * directly decode into them ! Map the first render buffers to
 652          * the first direct buffers, but keep the first direct buffer
 653          * for memcpy operations */
 654         p_vout->b_direct = 1;
 655
 656         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 657         {
 658             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 659                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 660                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 661             {
 662                 /* We have enough direct buffers so there's no need to
 663                  * try to use system memory buffers. */
 664                 break;
 665             }
 666             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 667             I_RENDERPICTURES++;
 668         }
 669
 670         msg_Dbg( p_vout, "direct render, mapping "
 671                  "render pictures 0-%i to system pictures 1-%i",
 672                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 673     }
 674     else
 675     {
 676         /* Rats... Something is wrong here, we could not find an output
 677          * plugin able to directly render what we decode. See if we can
 678          * find a chroma plugin to do the conversion */
 679         p_vout->b_direct = 0;
 680
 681         /* Choose the best module */
 682         p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL, 0 );
 683
 684         if( p_vout->chroma.p_module == NULL )
 685         {
 686             msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
 687                      (char*)&p_vout->render.i_chroma,
 688                      (char*)&p_vout->output.i_chroma );
 689             p_vout->pf_end( p_vout );
 690             vlc_mutex_unlock( &p_vout->change_lock );
 691             return VLC_EGENERIC;
 692         }
 693
 694         msg_Dbg( p_vout, "indirect render, mapping "
 695                  "render pictures 0-%i to system pictures %i-%i",
 696                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 697                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 698
 699         /* Append render buffers after the direct buffers */
 700         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 701         {
 702             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 703             I_RENDERPICTURES++;
 704
 705             /* Check if we have enough render pictures */
 706             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 707                 break;
 708         }
 709     }
 710
 711     /* Link pictures back to their heap */
 712     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 713     {
 714         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 715     }
 716
 717     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 718     {
 719         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 720     }
 721
 722 /* XXX XXX mark thread ready */
 723     return VLC_SUCCESS;
 724 }
 725
 726 /*****************************************************************************
 727  * RunThread: video output thread
 728  *****************************************************************************
 729  * Video output thread. This function does only returns when the thread is
 730  * terminated. It handles the pictures arriving in the video heap and the
 731  * display device events.
 732  *****************************************************************************/
 733 static void RunThread( vout_thread_t *p_vout)
 734 {
 735     int             i_index;                                /* index in heap */
 736     int             i_idle_loops = 0;  /* loops without displaying a picture */
 737     mtime_t         current_date;                            /* current date */
 738     mtime_t         display_date;                            /* display date */
 739
 740     picture_t *     p_picture;                            /* picture pointer */
 741     picture_t *     p_last_picture = NULL;                   /* last picture */
 742     picture_t *     p_directbuffer;              /* direct buffer to display */
 743
 744     subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
 745
 746     input_thread_t *p_input = NULL ; /* Parent input, if it exists */
 747
 748     vlc_value_t     val;
 749     vlc_bool_t      b_drop_late;
 750
 751     int             i_displayed = 0, i_lost = 0, i_loops = 0;
 752
 753     /*
 754      * Initialize thread
 755      */
 756     p_vout->b_error = InitThread( p_vout );
 757
 758     var_Create( p_vout, "drop-late-frames", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 759     var_Get( p_vout, "drop-late-frames", &val );
 760     b_drop_late = val.b_bool;
 761
 762     /* signal the creation of the vout */
 763     vlc_thread_ready( p_vout );
 764
 765     if( p_vout->b_error )
 766     {
 767         /* Destroy thread structures allocated by Create and InitThread */
 768         DestroyThread( p_vout );
 769         return;
 770     }
 771
 772     /*
 773      * Main loop - it is not executed if an error occurred during
 774      * initialization
 775      */
 776     while( (!p_vout->b_die) && (!p_vout->b_error) )
 777     {
 778         /* Initialize loop variables */
 779         p_picture = NULL;
 780         display_date = 0;
 781         current_date = mdate();
 782
 783         i_loops++;
 784         if( i_loops % 20 == 0 )
 785         {
 786             p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT, FIND_PARENT );
 787             if( p_input )
 788             {
 789                 vlc_mutex_lock( &p_input->counters.counters_lock );
 790                 stats_UpdateInteger( p_vout, p_input->counters.p_lost_pictures,
 791                                      i_lost , NULL);
 792                 stats_UpdateInteger( p_vout,
 793                                      p_input->counters.p_displayed_pictures,
 794                                      i_displayed , NULL);
 795                 i_displayed = i_lost = 0;
 796                 vlc_mutex_unlock( &p_input->counters.counters_lock );
 797                 vlc_object_release( p_input );
 798             }
 799         }
 800 #if 0
 801         p_vout->c_loops++;
 802         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 803         {
 804             msg_Dbg( p_vout, "picture heap: %d/%d",
 805                      I_RENDERPICTURES, p_vout->i_heap_size );
 806         }
 807 #endif
 808
 809         /*
 810          * Find the picture to display (the one with the earliest date).
 811          * This operation does not need lock, since only READY_PICTUREs
 812          * are handled. */
 813         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 814         {
 815             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 816                 && ( (p_picture == NULL) ||
 817                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 818             {
 819                 p_picture = PP_RENDERPICTURE[i_index];
 820                 display_date = p_picture->date;
 821             }
 822         }
 823
 824         if( p_picture )
 825         {
 826             /* If we met the last picture, parse again to see whether there is
 827              * a more appropriate one. */
 828             if( p_picture == p_last_picture )
 829             {
 830                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 831                 {
 832                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 833                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 834                         && ((p_picture == p_last_picture) ||
 835                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 836                     {
 837                         p_picture = PP_RENDERPICTURE[i_index];
 838                         display_date = p_picture->date;
 839                     }
 840                 }
 841             }
 842
 843             /* If we found better than the last picture, destroy it */
 844             if( p_last_picture && p_picture != p_last_picture )
 845             {
 846                 vlc_mutex_lock( &p_vout->picture_lock );
 847                 if( p_last_picture->i_refcount )
 848                 {
 849                     p_last_picture->i_status = DISPLAYED_PICTURE;
 850                 }
 851                 else
 852                 {
 853                     p_last_picture->i_status = DESTROYED_PICTURE;
 854                     p_vout->i_heap_size--;
 855                 }
 856                 vlc_mutex_unlock( &p_vout->picture_lock );
 857                 p_last_picture = NULL;
 858             }
 859
 860             /* Compute FPS rate */
 861             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 862                 = display_date;
 863
 864             if( !p_picture->b_force &&
 865                 p_picture != p_last_picture &&
 866                 display_date < current_date + p_vout->render_time &&
 867                 b_drop_late )
 868             {
 869                 /* Picture is late: it will be destroyed and the thread
 870                  * will directly choose the next picture */
 871                 vlc_mutex_lock( &p_vout->picture_lock );
 872                 if( p_picture->i_refcount )
 873                 {
 874                     /* Pretend we displayed the picture, but don't destroy
 875                      * it since the decoder might still need it. */
 876                     p_picture->i_status = DISPLAYED_PICTURE;
 877                 }
 878                 else
 879                 {
 880                     /* Destroy the picture without displaying it */
 881                     p_picture->i_status = DESTROYED_PICTURE;
 882                     p_vout->i_heap_size--;
 883                 }
 884                 msg_Warn( p_vout, "late picture skipped ("I64Fd")",
 885                                   current_date - display_date );
 886                 i_lost++;
 887                 vlc_mutex_unlock( &p_vout->picture_lock );
 888
 889                 continue;
 890             }
 891
 892             if( display_date >
 893                 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
 894             {
 895                 /* Picture is waaay too early: it will be destroyed */
 896                 vlc_mutex_lock( &p_vout->picture_lock );
 897                 if( p_picture->i_refcount )
 898                 {
 899                     /* Pretend we displayed the picture, but don't destroy
 900                      * it since the decoder might still need it. */
 901                     p_picture->i_status = DISPLAYED_PICTURE;
 902                 }
 903                 else
 904                 {
 905                     /* Destroy the picture without displaying it */
 906                     p_picture->i_status = DESTROYED_PICTURE;
 907                     p_vout->i_heap_size--;
 908                 }
 909                 i_lost++;
 910                 msg_Warn( p_vout, "vout warning: early picture skipped "
 911                           "("I64Fd")", display_date - current_date
 912                           - p_vout->i_pts_delay );
 913                 vlc_mutex_unlock( &p_vout->picture_lock );
 914
 915                 continue;
 916             }
 917
 918             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 919             {
 920                 /* A picture is ready to be rendered, but its rendering date
 921                  * is far from the current one so the thread will perform an
 922                  * empty loop as if no picture were found. The picture state
 923                  * is unchanged */
 924                 p_picture    = NULL;
 925                 display_date = 0;
 926             }
 927             else if( p_picture == p_last_picture )
 928             {
 929                 /* We are asked to repeat the previous picture, but we first
 930                  * wait for a couple of idle loops */
 931                 if( i_idle_loops < 4 )
 932                 {
 933                     p_picture    = NULL;
 934                     display_date = 0;
 935                 }
 936                 else
 937                 {
 938                     /* We set the display date to something high, otherwise
 939                      * we'll have lots of problems with late pictures */
 940                     display_date = current_date + p_vout->render_time;
 941                 }
 942             }
 943         }
 944
 945         if( p_picture == NULL )
 946         {
 947             i_idle_loops++;
 948         }
 949
 950         /* Video Filter2 stuff */
 951         if( p_vout->b_vfilter_change == VLC_TRUE )
 952         {
 953             int i;
 954             RemoveVideoFilters2( p_vout );
 955             for( i = 0; i < p_vout->i_vfilters_cfg; i++ )
 956             {
 957                 filter_t *p_vfilter =
 958                     p_vout->pp_vfilters[p_vout->i_vfilters] =
 959                         vlc_object_create( p_vout, VLC_OBJECT_FILTER );
 960
 961                 vlc_object_attach( p_vfilter, p_vout );
 962
 963                 p_vfilter->pf_vout_buffer_new = video_new_buffer_filter;
 964                 p_vfilter->pf_vout_buffer_del = video_del_buffer_filter;
 965
 966                 p_vfilter->fmt_in.video = p_vout->fmt_render;
 967                 p_vfilter->fmt_out.video = p_vout->fmt_render;
 968
 969                 p_vfilter->p_cfg = p_vout->p_vfilters_cfg[i];
 970                 p_vfilter->p_module = module_Need( p_vfilter, "video filter2",
 971                                                  p_vout->psz_vfilters[i], 0 );
 972
 973                 if( p_vfilter->p_module )
 974                 {
 975                     p_vfilter->p_owner =
 976                         malloc( sizeof( filter_owner_sys_t ) );
 977                     p_vfilter->p_owner->p_vout = p_vout;
 978                     p_vout->i_vfilters++;
 979                     msg_Dbg( p_vout, "video filter found (%s)",
 980                              p_vout->psz_vfilters[i] );
 981                 }
 982                 else
 983                 {
 984                     msg_Err( p_vout, "no video filter found (%s)",
 985                              p_vout->psz_vfilters[i] );
 986                     vlc_object_detach( p_vfilter );
 987                     vlc_object_destroy( p_vfilter );
 988                 }
 989             }
 990             p_vout->b_vfilter_change = VLC_FALSE;
 991         }
 992
 993         if( p_picture )
 994         {
 995             int i;
 996             for( i = 0; i < p_vout->i_vfilters; i++ )
 997             {
 998                 picture_t *p_old = p_picture;
 999                 p_picture  = p_vout->pp_vfilters[i]->pf_video_filter(
1000                                  p_vout->pp_vfilters[i], p_picture );
1001                 if( !p_picture )
1002                 {
1003                     break;
1004                 }
1005                 /* FIXME: this is kind of wrong
1006                  * if you have 2 or more vfilters and the 2nd breaks,
1007                  * on the next loop the 1st one will be applied again */
1008
1009                 /* if p_old and p_picture are the same (ie the filter
1010                  * worked on the old picture), then following code is
1011                  * still alright since i_status gets changed back to
1012                  * the right value */
1013                 if( p_old->i_refcount )
1014                 {
1015                     p_old->i_status = DISPLAYED_PICTURE;
1016                 }
1017                 else
1018                 {
1019                     p_old->i_status = DESTROYED_PICTURE;
1020                 }
1021                 p_picture->i_status = READY_PICTURE;
1022             }
1023         }
1024
1025         if( p_picture && p_vout->b_snapshot )
1026         {
1027             p_vout->b_snapshot = VLC_FALSE;
1028             vout_Snapshot( p_vout, p_picture );
1029         }
1030
1031         /*
1032          * Check for subpictures to display
1033          */
1034         if( display_date > 0 )
1035         {
1036             p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date );
1037         }
1038
1039         /*
1040          * Perform rendering
1041          */
1042         i_displayed++;
1043         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
1044
1045         /*
1046          * Call the plugin-specific rendering method if there is one
1047          */
1048         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
1049         {
1050             /* Render the direct buffer returned by vout_RenderPicture */
1051             p_vout->pf_render( p_vout, p_directbuffer );
1052         }
1053
1054         /*
1055          * Sleep, wake up
1056          */
1057         if( display_date != 0 && p_directbuffer != NULL )
1058         {
1059             mtime_t current_render_time = mdate() - current_date;
1060             /* if render time is very large we don't include it in the mean */
1061             if( current_render_time < p_vout->render_time +
1062                 VOUT_DISPLAY_DELAY )
1063             {
1064                 /* Store render time using a sliding mean weighting to
1065                  * current value in a 3 to 1 ratio*/
1066                 p_vout->render_time *= 3;
1067                 p_vout->render_time += current_render_time;
1068                 p_vout->render_time >>= 2;
1069             }
1070         }
1071
1072         /* Give back change lock */
1073         vlc_mutex_unlock( &p_vout->change_lock );
1074
1075         /* Sleep a while or until a given date */
1076         if( display_date != 0 )
1077         {
1078             /* If there are filters in the chain, better give them the picture
1079              * in advance */
1080             if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
1081             {
1082                 mwait( display_date - VOUT_MWAIT_TOLERANCE );
1083             }
1084         }
1085         else
1086         {
1087             msleep( VOUT_IDLE_SLEEP );
1088         }
1089
1090         /* On awakening, take back lock and send immediately picture
1091          * to display. */
1092         vlc_mutex_lock( &p_vout->change_lock );
1093
1094         /*
1095          * Display the previously rendered picture
1096          */
1097         if( p_picture != NULL && p_directbuffer != NULL )
1098         {
1099             /* Display the direct buffer returned by vout_RenderPicture */
1100             if( p_vout->pf_display )
1101             {
1102                 p_vout->pf_display( p_vout, p_directbuffer );
1103             }
1104
1105             /* Tell the vout this was the last picture and that it does not
1106              * need to be forced anymore. */
1107             p_last_picture = p_picture;
1108             p_last_picture->b_force = 0;
1109         }
1110
1111         if( p_picture != NULL )
1112         {
1113             /* Reinitialize idle loop count */
1114             i_idle_loops = 0;
1115         }
1116
1117         /*
1118          * Check events and manage thread
1119          */
1120         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
1121         {
1122             /* A fatal error occurred, and the thread must terminate
1123              * immediately, without displaying anything - setting b_error to 1
1124              * causes the immediate end of the main while() loop. */
1125             p_vout->b_error = 1;
1126         }
1127
1128         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
1129         {
1130             /* this must only happen when the vout plugin is incapable of
1131              * rescaling the picture itself. In this case we need to destroy
1132              * the current picture buffers and recreate new ones with the right
1133              * dimensions */
1134             int i;
1135
1136             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
1137
1138             p_vout->pf_end( p_vout );
1139             for( i = 0; i < I_OUTPUTPICTURES; i++ )
1140                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
1141
1142             I_OUTPUTPICTURES = 0;
1143             if( p_vout->pf_init( p_vout ) )
1144             {
1145                 msg_Err( p_vout, "cannot resize display" );
1146                 /* FIXME: pf_end will be called again in EndThread() */
1147                 p_vout->b_error = 1;
1148             }
1149
1150             /* Need to reinitialise the chroma plugin */
1151             if( p_vout->chroma.p_module )
1152             {
1153                 if( p_vout->chroma.p_module->pf_deactivate )
1154                     p_vout->chroma.p_module->pf_deactivate( VLC_OBJECT(p_vout) );
1155                 p_vout->chroma.p_module->pf_activate( VLC_OBJECT(p_vout) );
1156             }
1157         }
1158
1159         if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1160         {
1161             /* This happens when the picture buffers need to be recreated.
1162              * This is useful on multimonitor displays for instance.
1163              *
1164              * Warning: This only works when the vout creates only 1 picture
1165              * buffer!! */
1166             p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1167
1168             if( !p_vout->b_direct )
1169             {
1170                 module_Unneed( p_vout, p_vout->chroma.p_module );
1171             }
1172
1173             vlc_mutex_lock( &p_vout->picture_lock );
1174
1175             p_vout->pf_end( p_vout );
1176
1177             I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1178
1179             p_vout->b_error = InitThread( p_vout );
1180
1181             vlc_mutex_unlock( &p_vout->picture_lock );
1182         }
1183     }
1184
1185     /*
1186      * Error loop - wait until the thread destruction is requested
1187      */
1188     if( p_vout->b_error )
1189     {
1190         ErrorThread( p_vout );
1191     }
1192
1193     /* End of thread */
1194     EndThread( p_vout );
1195
1196     /* Destroy thread structures allocated by CreateThread */
1197     DestroyThread( p_vout );
1198 }
1199
1200 /*****************************************************************************
1201  * ErrorThread: RunThread() error loop
1202  *****************************************************************************
1203  * This function is called when an error occurred during thread main's loop.
1204  * The thread can still receive feed, but must be ready to terminate as soon
1205  * as possible.
1206  *****************************************************************************/
1207 static void ErrorThread( vout_thread_t *p_vout )
1208 {
1209     /* Wait until a `die' order */
1210     while( !p_vout->b_die )
1211     {
1212         /* Sleep a while */
1213         msleep( VOUT_IDLE_SLEEP );
1214     }
1215 }
1216
1217 /*****************************************************************************
1218  * EndThread: thread destruction
1219  *****************************************************************************
1220  * This function is called when the thread ends after a sucessful
1221  * initialization. It frees all resources allocated by InitThread.
1222  *****************************************************************************/
1223 static void EndThread( vout_thread_t *p_vout )
1224 {
1225     int     i_index;                                        /* index in heap */
1226
1227 #ifdef STATS
1228     {
1229         struct tms cpu_usage;
1230         times( &cpu_usage );
1231
1232         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1233                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1234     }
1235 #endif
1236
1237     if( !p_vout->b_direct )
1238     {
1239         module_Unneed( p_vout, p_vout->chroma.p_module );
1240     }
1241
1242     /* Destroy all remaining pictures */
1243     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1244     {
1245         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1246         {
1247             free( p_vout->p_picture[i_index].p_data_orig );
1248         }
1249     }
1250
1251     /* Destroy subpicture unit */
1252     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), VLC_FALSE );
1253     spu_Destroy( p_vout->p_spu );
1254
1255     /* Destroy the video filters2 */
1256     RemoveVideoFilters2( p_vout );
1257
1258     /* Destroy translation tables */
1259     p_vout->pf_end( p_vout );
1260
1261     /* Release the change lock */
1262     vlc_mutex_unlock( &p_vout->change_lock );
1263 }
1264
1265 /*****************************************************************************
1266  * DestroyThread: thread destruction
1267  *****************************************************************************
1268  * This function is called when the thread ends. It frees all ressources
1269  * allocated by CreateThread. Status is available at this stage.
1270  *****************************************************************************/
1271 static void DestroyThread( vout_thread_t *p_vout )
1272 {
1273     /* Destroy the locks */
1274     vlc_mutex_destroy( &p_vout->picture_lock );
1275     vlc_mutex_destroy( &p_vout->change_lock );
1276
1277     /* Release the module */
1278     if( p_vout && p_vout->p_module )
1279     {
1280         module_Unneed( p_vout, p_vout->p_module );
1281     }
1282 }
1283
1284 /* following functions are local */
1285
1286 static int ReduceHeight( int i_ratio )
1287 {
1288     int i_dummy = VOUT_ASPECT_FACTOR;
1289     int i_pgcd  = 1;
1290
1291     if( !i_ratio )
1292     {
1293         return i_pgcd;
1294     }
1295
1296     /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1297     while( !(i_ratio & 1) && !(i_dummy & 1) )
1298     {
1299         i_ratio >>= 1;
1300         i_dummy >>= 1;
1301         i_pgcd  <<= 1;
1302     }
1303
1304     while( !(i_ratio % 3) && !(i_dummy % 3) )
1305     {
1306         i_ratio /= 3;
1307         i_dummy /= 3;
1308         i_pgcd  *= 3;
1309     }
1310
1311     while( !(i_ratio % 5) && !(i_dummy % 5) )
1312     {
1313         i_ratio /= 5;
1314         i_dummy /= 5;
1315         i_pgcd  *= 5;
1316     }
1317
1318     return i_pgcd;
1319 }
1320
1321 static void AspectRatio( int i_aspect, int *i_aspect_x, int *i_aspect_y )
1322 {
1323     unsigned int i_pgcd = ReduceHeight( i_aspect );
1324     *i_aspect_x = i_aspect / i_pgcd;
1325     *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
1326 }
1327
1328 /*****************************************************************************
1329  * BinaryLog: computes the base 2 log of a binary value
1330  *****************************************************************************
1331  * This functions is used by MaskToShift, to get a bit index from a binary
1332  * value.
1333  *****************************************************************************/
1334 static int BinaryLog( uint32_t i )
1335 {
1336     int i_log = 0;
1337
1338     if( i == 0 ) return -31337;
1339
1340     if( i & 0xffff0000 ) i_log += 16;
1341     if( i & 0xff00ff00 ) i_log += 8;
1342     if( i & 0xf0f0f0f0 ) i_log += 4;
1343     if( i & 0xcccccccc ) i_log += 2;
1344     if( i & 0xaaaaaaaa ) i_log += 1;
1345
1346     return i_log;
1347 }
1348
1349 /*****************************************************************************
1350  * MaskToShift: transform a color mask into right and left shifts
1351  *****************************************************************************
1352  * This function is used for obtaining color shifts from masks.
1353  *****************************************************************************/
1354 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1355 {
1356     uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
1357
1358     if( !i_mask )
1359     {
1360         *pi_left = *pi_right = 0;
1361         return;
1362     }
1363
1364     /* Get bits */
1365     i_low = i_high = i_mask;
1366
1367     i_low &= - (int32_t)i_low;          /* lower bit of the mask */
1368     i_high += i_low;                    /* higher bit of the mask */
1369
1370     /* Transform bits into an index. Also deal with i_high overflow, which
1371      * is faster than changing the BinaryLog code to handle 64 bit integers. */
1372     i_low =  BinaryLog (i_low);
1373     i_high = i_high ? BinaryLog (i_high) : 32;
1374
1375     /* Update pointers and return */
1376     *pi_left =   i_low;
1377     *pi_right = (8 - i_high + i_low);
1378 }
1379
1380 /*****************************************************************************
1381  * vout_VarCallback: generic callback for intf variables
1382  *****************************************************************************/
1383 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1384                       vlc_value_t old_value, vlc_value_t new_value,
1385                       void * unused )
1386 {
1387     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1388     vlc_value_t val;
1389     val.b_bool = VLC_TRUE;
1390     var_Set( p_vout, "intf-change", val );
1391     return VLC_SUCCESS;
1392 }
1393
1394 /*****************************************************************************
1395  * Helper thread for object variables callbacks.
1396  * Only used to avoid deadlocks when using the video embedded mode.
1397  *****************************************************************************/
1398 typedef struct suxor_thread_t
1399 {
1400     VLC_COMMON_MEMBERS
1401     input_thread_t *p_input;
1402
1403 } suxor_thread_t;
1404
1405 static void SuxorRestartVideoES( suxor_thread_t *p_this )
1406 {
1407     vlc_value_t val;
1408
1409     vlc_thread_ready( p_this );
1410
1411     /* Now restart current video stream */
1412     var_Get( p_this->p_input, "video-es", &val );
1413     if( val.i_int >= 0 )
1414     {
1415         vlc_value_t val_es;
1416         val_es.i_int = -VIDEO_ES;
1417         var_Set( p_this->p_input, "video-es", val_es );
1418         var_Set( p_this->p_input, "video-es", val );
1419     }
1420
1421     vlc_object_release( p_this->p_input );
1422
1423 #ifdef WIN32
1424     CloseHandle( p_this->thread_id );
1425 #endif
1426
1427     vlc_object_destroy( p_this );
1428 }
1429
1430 /*****************************************************************************
1431  * object variables callbacks: a bunch of object variables are used by the
1432  * interfaces to interact with the vout.
1433  *****************************************************************************/
1434 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1435                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1436 {
1437     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1438     input_thread_t *p_input;
1439     vlc_value_t val;
1440
1441     char *psz_mode = newval.psz_string;
1442     char *psz_filter, *psz_deinterlace = NULL;
1443
1444     var_Get( p_vout, "vout-filter", &val );
1445     psz_filter = val.psz_string;
1446     if( psz_filter ) psz_deinterlace = strstr( psz_filter, "deinterlace" );
1447
1448     if( !psz_mode || !*psz_mode )
1449     {
1450         if( psz_deinterlace )
1451         {
1452             char *psz_src = psz_deinterlace + sizeof("deinterlace") - 1;
1453             if( psz_src[0] == ':' ) psz_src++;
1454             memmove( psz_deinterlace, psz_src, strlen(psz_src) + 1 );
1455         }
1456     }
1457     else if( !psz_deinterlace )
1458     {
1459         psz_filter = realloc( psz_filter, strlen( psz_filter ) +
1460                               sizeof(":deinterlace") );
1461         if( psz_filter && *psz_filter ) strcat( psz_filter, ":" );
1462         strcat( psz_filter, "deinterlace" );
1463     }
1464
1465     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1466                                                  FIND_PARENT );
1467     if( !p_input ) return VLC_EGENERIC;
1468
1469     if( psz_mode && *psz_mode )
1470     {
1471         /* Modify input as well because the vout might have to be restarted */
1472         val.psz_string = psz_mode;
1473         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1474         var_Set( p_input, "deinterlace-mode", val );
1475     }
1476     vlc_object_release( p_input );
1477
1478     val.b_bool = VLC_TRUE;
1479     var_Set( p_vout, "intf-change", val );
1480
1481     val.psz_string = psz_filter;
1482     var_Set( p_vout, "vout-filter", val );
1483     if( psz_filter ) free( psz_filter );
1484
1485     return VLC_SUCCESS;
1486 }
1487
1488 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1489                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1490 {
1491     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1492     input_thread_t *p_input;
1493     vlc_value_t val;
1494
1495     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1496                                                  FIND_PARENT );
1497     if (!p_input)
1498     {
1499         msg_Err( p_vout, "Input not found" );
1500         return( VLC_EGENERIC );
1501     }
1502
1503     val.b_bool = VLC_TRUE;
1504     var_Set( p_vout, "intf-change", val );
1505
1506     /* Modify input as well because the vout might have to be restarted */
1507     val.psz_string = newval.psz_string;
1508     var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1509
1510     var_Set( p_input, "vout-filter", val );
1511
1512     /* Now restart current video stream */
1513     var_Get( p_input, "video-es", &val );
1514     if( val.i_int >= 0 )
1515     {
1516         suxor_thread_t *p_suxor =
1517             vlc_object_create( p_vout, sizeof(suxor_thread_t) );
1518         p_suxor->p_input = p_input;
1519         p_vout->b_filter_change = VLC_TRUE;
1520         vlc_object_yield( p_input );
1521         vlc_thread_create( p_suxor, "suxor", SuxorRestartVideoES,
1522                            VLC_THREAD_PRIORITY_LOW, VLC_FALSE );
1523     }
1524
1525     vlc_object_release( p_input );
1526
1527     return VLC_SUCCESS;
1528 }
1529
1530 /*****************************************************************************
1531  * Video Filter2 stuff
1532  *****************************************************************************/
1533 static int ParseVideoFilter2Chain( vout_thread_t *p_vout, char *psz_vfilters )
1534 {
1535     int i;
1536     for( i = 0; i < p_vout->i_vfilters_cfg; i++ )
1537     {
1538         /* FIXME: this should be moved in a separate function */
1539         struct sout_cfg_t *p_cfg =
1540             p_vout->p_vfilters_cfg[p_vout->i_vfilters_cfg];
1541         while( p_cfg )
1542         {
1543             struct sout_cfg_t *p_next = p_cfg->p_next;
1544             free( p_cfg->psz_name );
1545             free( p_cfg->psz_value );
1546             free( p_cfg );
1547             p_cfg = p_next;
1548         }
1549         /* </FIXME> */
1550
1551         free( p_vout->psz_vfilters[p_vout->i_vfilters_cfg] );
1552     }
1553     p_vout->i_vfilters_cfg = 0;
1554     if( psz_vfilters && *psz_vfilters )
1555     {
1556         char *psz_parser = psz_vfilters;
1557
1558         while( psz_parser && *psz_parser )
1559         {
1560             psz_parser = sout_CfgCreate(
1561                             &p_vout->psz_vfilters[p_vout->i_vfilters_cfg],
1562                             &p_vout->p_vfilters_cfg[p_vout->i_vfilters_cfg],
1563                             psz_parser );
1564             msg_Dbg( p_vout, "adding vfilter: %s\n",
1565                      p_vout->psz_vfilters[p_vout->i_vfilters_cfg] );
1566             p_vout->i_vfilters_cfg++;
1567             if( psz_parser && psz_parser )
1568             {
1569                 if( p_vout->i_vfilters_cfg == MAX_VFILTERS )
1570                 {
1571                     msg_Warn( p_vout,
1572                   "maximum number of video filters reached. \"%s\" discarded",
1573                               psz_parser );
1574                     break;
1575                 }
1576             }
1577         }
1578     }
1579     return VLC_SUCCESS;
1580 }
1581
1582 static int VideoFilter2Callback( vlc_object_t *p_this, char const *psz_cmd,
1583                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1584 {
1585     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1586
1587     ParseVideoFilter2Chain( p_vout, newval.psz_string );
1588     p_vout->b_vfilter_change = VLC_TRUE;
1589
1590     return VLC_SUCCESS;
1591 }
1592
1593 static void RemoveVideoFilters2( vout_thread_t *p_vout )
1594 {
1595     int i;
1596     for( i = 0; i < p_vout->i_vfilters; i++ )
1597     {
1598         vlc_object_detach( p_vout->pp_vfilters[i] );
1599         if( p_vout->pp_vfilters[i]->p_module )
1600         {
1601             module_Unneed( p_vout->pp_vfilters[i],
1602                            p_vout->pp_vfilters[i]->p_module );
1603         }
1604
1605         free( p_vout->pp_vfilters[i]->p_owner );
1606         vlc_object_destroy( p_vout->pp_vfilters[i] );
1607     }
1608     p_vout->i_vfilters = 0;
1609 }