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 <vlc/vlc.h>
  33
  34 #include <stdlib.h>                                                /* free() */
  35 #include <string.h>
  36
  37
  38 #ifdef HAVE_SYS_TIMES_H
  39 #   include <sys/times.h>
  40 #endif
  41
  42 #include "vlc_video.h"
  43 #include "video_output.h"
  44 #include "vlc_spu.h"
  45 #include <vlc/input.h>                 /* for input_thread_t and i_pts_delay */
  46 #include "vlc_playlist.h"
  47
  48 #include "vlc_filter.h"
  49 #include <vlc/sout.h> /* sout_CfgParse */
  50
  51 #if defined( __APPLE__ )
  52 #include "darwin_specific.h"
  53 #endif
  54
  55 /*****************************************************************************
  56  * Local prototypes
  57  *****************************************************************************/
  58 static int      InitThread        ( vout_thread_t * );
  59 static void     RunThread         ( vout_thread_t * );
  60 static void     ErrorThread       ( vout_thread_t * );
  61 static void     EndThread         ( vout_thread_t * );
  62 static void     DestroyThread     ( vout_thread_t * );
  63
  64 static void     AspectRatio       ( int, int *, int * );
  65 static int      BinaryLog         ( uint32_t );
  66 static void     MaskToShift       ( int *, int *, uint32_t );
  67
  68 /* Object variables callbacks */
  69 static int DeinterlaceCallback( vlc_object_t *, char const *,
  70                                 vlc_value_t, vlc_value_t, void * );
  71 static int FilterCallback( vlc_object_t *, char const *,
  72                            vlc_value_t, vlc_value_t, void * );
  73 static int VideoFilter2Callback( vlc_object_t *, char const *,
  74                                  vlc_value_t, vlc_value_t, void * );
  75
  76 /* From vout_intf.c */
  77 int vout_Snapshot( vout_thread_t *, picture_t * );
  78
  79 /* Video filter2 parsing */
  80 static int ParseVideoFilter2Chain( vout_thread_t *, char * );
  81 static void RemoveVideoFilters2( vout_thread_t *p_vout );
  82
  83 /*****************************************************************************
  84  * Video Filter2 functions
  85  *****************************************************************************/
  86 struct filter_owner_sys_t
  87 {
  88     vout_thread_t *p_vout;
  89 };
  90
  91 static picture_t *video_new_buffer_filter( filter_t *p_filter )
  92 {
  93     picture_t *p_picture;
  94     vout_thread_t *p_vout = p_filter->p_owner->p_vout;
  95
  96     p_picture = vout_CreatePicture( p_vout, 0, 0, 0 );
  97
  98     return p_picture;
  99 }
 100
 101 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
 102 {
 103     vout_DestroyPicture( p_filter->p_owner->p_vout, p_pic );
 104 }
 105
 106 /*****************************************************************************
 107  * vout_Request: find a video output thread, create one, or destroy one.
 108  *****************************************************************************
 109  * This function looks for a video output thread matching the current
 110  * properties. If not found, it spawns a new one.
 111  *****************************************************************************/
 112 vout_thread_t *__vout_Request( vlc_object_t *p_this, vout_thread_t *p_vout,
 113                                video_format_t *p_fmt )
 114 {
 115     if( !p_fmt )
 116     {
 117         /* Reattach video output to playlist before bailing out */
 118         if( p_vout )
 119         {
 120             vlc_object_t *p_playlist = pl_Yield( p_this );
 121             spu_Attach( p_vout->p_spu, p_this, VLC_FALSE );
 122             vlc_object_detach( p_vout );
 123             vlc_object_attach( p_vout, p_playlist );
 124             pl_Release( p_this );
 125         }
 126         return NULL;
 127     }
 128
 129     /* If a video output was provided, lock it, otherwise look for one. */
 130     if( p_vout )
 131     {
 132         vlc_object_yield( p_vout );
 133     }
 134     else
 135     {
 136         p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD );
 137
 138         if( !p_vout )
 139         {
 140             playlist_t *p_playlist = pl_Yield( p_this );
 141             vlc_mutex_lock( &p_playlist->gc_lock );
 142             p_vout = vlc_object_find( p_playlist,
 143                                       VLC_OBJECT_VOUT, FIND_CHILD );
 144             /* only first children of p_input for unused vout */
 145             if( p_vout && p_vout->p_parent != (vlc_object_t *)p_playlist )
 146             {
 147                 vlc_object_release( p_vout );
 148                 p_vout = NULL;
 149             }
 150             vlc_mutex_unlock( &p_playlist->gc_lock );
 151         }
 152     }
 153
 154     /* If we now have a video output, check it has the right properties */
 155     if( p_vout )
 156     {
 157         char *psz_filter_chain;
 158         vlc_value_t val;
 159
 160         /* We don't directly check for the "vout-filter" variable for obvious
 161          * performance reasons. */
 162         if( p_vout->b_filter_change )
 163         {
 164             var_Get( p_vout, "vout-filter", &val );
 165             psz_filter_chain = val.psz_string;
 166
 167             if( psz_filter_chain && !*psz_filter_chain )
 168             {
 169                 free( psz_filter_chain );
 170                 psz_filter_chain = NULL;
 171             }
 172             if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
 173             {
 174                 free( p_vout->psz_filter_chain );
 175                 p_vout->psz_filter_chain = NULL;
 176             }
 177
 178             if( !psz_filter_chain && !p_vout->psz_filter_chain )
 179             {
 180                 p_vout->b_filter_change = VLC_FALSE;
 181             }
 182
 183             if( psz_filter_chain ) free( psz_filter_chain );
 184         }
 185
 186         if( ( p_vout->fmt_render.i_width != p_fmt->i_width ) ||
 187             ( p_vout->fmt_render.i_height != p_fmt->i_height ) ||
 188             ( p_vout->fmt_render.i_chroma != p_fmt->i_chroma ) ||
 189             ( p_vout->fmt_render.i_aspect != p_fmt->i_aspect ) ||
 190             p_vout->b_filter_change )
 191         {
 192             /* We are not interested in this format, close this vout */
 193             vlc_object_detach( p_vout );
 194             vlc_object_release( p_vout );
 195             vout_Destroy( p_vout );
 196             p_vout = NULL;
 197         }
 198         else
 199         {
 200             /* This video output is cool! Hijack it. */
 201             vlc_object_detach( p_vout );
 202             spu_Attach( p_vout->p_spu, p_this, VLC_TRUE );
 203             vlc_object_attach( p_vout, p_this );
 204             vlc_object_release( p_vout );
 205         }
 206     }
 207
 208     if( !p_vout )
 209     {
 210         msg_Dbg( p_this, "no usable vout present, spawning one" );
 211
 212         p_vout = vout_Create( p_this, p_fmt );
 213     }
 214
 215     return p_vout;
 216 }
 217
 218 /*****************************************************************************
 219  * vout_Create: creates a new video output thread
 220  *****************************************************************************
 221  * This function creates a new video output thread, and returns a pointer
 222  * to its description. On error, it returns NULL.
 223  *****************************************************************************/
 224 vout_thread_t * __vout_Create( vlc_object_t *p_parent, video_format_t *p_fmt )
 225 {
 226     vout_thread_t  * p_vout;                            /* thread descriptor */
 227     input_thread_t * p_input_thread;
 228     int              i_index;                               /* loop variable */
 229     char           * psz_plugin;
 230     vlc_value_t      val, text;
 231
 232     unsigned int i_width = p_fmt->i_width;
 233     unsigned int i_height = p_fmt->i_height;
 234     vlc_fourcc_t i_chroma = p_fmt->i_chroma;
 235     unsigned int i_aspect = p_fmt->i_aspect;
 236
 237     /* Allocate descriptor */
 238     p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
 239     if( p_vout == NULL )
 240     {
 241         msg_Err( p_parent, "out of memory" );
 242         return NULL;
 243     }
 244
 245     /* Initialize pictures - translation tables and functions
 246      * will be initialized later in InitThread */
 247     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
 248     {
 249         p_vout->p_picture[i_index].pf_lock = NULL;
 250         p_vout->p_picture[i_index].pf_unlock = NULL;
 251         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 252         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 253         p_vout->p_picture[i_index].b_slow   = 0;
 254     }
 255
 256     /* No images in the heap */
 257     p_vout->i_heap_size = 0;
 258
 259     /* Initialize the rendering heap */
 260     I_RENDERPICTURES = 0;
 261
 262     vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
 263                  p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 264     p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
 265     p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
 266
 267     p_vout->render.i_width    = i_width;
 268     p_vout->render.i_height   = i_height;
 269     p_vout->render.i_chroma   = i_chroma;
 270     p_vout->render.i_aspect   = i_aspect;
 271
 272     p_vout->render.i_rmask    = 0;
 273     p_vout->render.i_gmask    = 0;
 274     p_vout->render.i_bmask    = 0;
 275
 276     p_vout->render.i_last_used_pic = -1;
 277     p_vout->render.b_allow_modify_pics = 1;
 278
 279     /* Zero the output heap */
 280     I_OUTPUTPICTURES = 0;
 281     p_vout->output.i_width    = 0;
 282     p_vout->output.i_height   = 0;
 283     p_vout->output.i_chroma   = 0;
 284     p_vout->output.i_aspect   = 0;
 285
 286     p_vout->output.i_rmask    = 0;
 287     p_vout->output.i_gmask    = 0;
 288     p_vout->output.i_bmask    = 0;
 289
 290     /* Initialize misc stuff */
 291     p_vout->i_changes    = 0;
 292     p_vout->f_gamma      = 0;
 293     p_vout->b_grayscale  = 0;
 294     p_vout->b_info       = 0;
 295     p_vout->b_interface  = 0;
 296     p_vout->b_scale      = 1;
 297     p_vout->b_fullscreen = 0;
 298     p_vout->i_alignment  = 0;
 299     p_vout->render_time  = 10;
 300     p_vout->c_fps_samples = 0;
 301     p_vout->b_filter_change = 0;
 302     p_vout->pf_control = 0;
 303     p_vout->p_parent_intf = 0;
 304     p_vout->i_par_num = p_vout->i_par_den = 1;
 305
 306     /* Initialize locks */
 307     vlc_mutex_init( p_vout, &p_vout->picture_lock );
 308     vlc_mutex_init( p_vout, &p_vout->change_lock );
 309
 310     /* Mouse coordinates */
 311     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 312     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 313     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 314     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 315     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 316
 317     /* Initialize subpicture unit */
 318     p_vout->p_spu = spu_Create( p_vout );
 319     spu_Attach( p_vout->p_spu, p_parent, VLC_TRUE );
 320
 321     /* Attach the new object now so we can use var inheritance below */
 322     vlc_object_attach( p_vout, p_parent );
 323
 324     spu_Init( p_vout->p_spu );
 325
 326     /* Take care of some "interface/control" related initialisations */
 327     vout_IntfInit( p_vout );
 328
 329     /* If the parent is not a VOUT object, that means we are at the start of
 330      * the video output pipe */
 331     if( p_parent->i_object_type != VLC_OBJECT_VOUT )
 332     {
 333         /* Look for the default filter configuration */
 334         var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 335         var_Get( p_vout, "vout-filter", &val );
 336         p_vout->psz_filter_chain = val.psz_string;
 337
 338         /* Apply video filter2 objects on the first vout */
 339         var_Create( p_vout, "video-filter",
 340                     VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 341         var_Get( p_vout, "video-filter", &val );
 342         ParseVideoFilter2Chain( p_vout, val.psz_string );
 343         free( val.psz_string );
 344     }
 345     else
 346     {
 347         /* continue the parent's filter chain */
 348         char *psz_end;
 349
 350         psz_end = strchr( ((vout_thread_t *)p_parent)->psz_filter_chain, ':' );
 351         if( psz_end && *(psz_end+1) )
 352             p_vout->psz_filter_chain = strdup( psz_end+1 );
 353         else p_vout->psz_filter_chain = NULL;
 354
 355         /* Create a video filter2 var ... but don't inherit values */
 356         var_Create( p_vout, "video-filter", VLC_VAR_STRING );
 357         ParseVideoFilter2Chain( p_vout, NULL );
 358     }
 359
 360     var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
 361     p_vout->b_vfilter_change = VLC_TRUE;
 362     p_vout->i_vfilters = 0;
 363
 364     /* Choose the video output module */
 365     if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 366     {
 367         var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 368         var_Get( p_vout, "vout", &val );
 369         psz_plugin = val.psz_string;
 370     }
 371     else
 372     {
 373         /* the filter chain is a string list of filters separated by double
 374          * colons */
 375         char *psz_end;
 376
 377         psz_end = strchr( p_vout->psz_filter_chain, ':' );
 378         if( psz_end )
 379             psz_plugin = strndup( p_vout->psz_filter_chain,
 380                                   psz_end - p_vout->psz_filter_chain );
 381         else psz_plugin = strdup( p_vout->psz_filter_chain );
 382     }
 383
 384     /* Create the vout thread */
 385     p_vout->p_module = module_Need( p_vout,
 386         ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
 387         "video filter" : "video output", psz_plugin, 0 );
 388
 389     if( psz_plugin ) free( psz_plugin );
 390     if( p_vout->p_module == NULL )
 391     {
 392         msg_Err( p_vout, "no suitable vout module" );
 393         vlc_object_detach( p_vout );
 394         vlc_object_destroy( p_vout );
 395         return NULL;
 396     }
 397
 398     /* Create a few object variables for interface interaction */
 399     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
 400     text.psz_string = _("Deinterlace");
 401     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
 402     val.psz_string = ""; text.psz_string = _("Disable");
 403     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 404     val.psz_string = "discard"; text.psz_string = _("Discard");
 405     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 406     val.psz_string = "blend"; text.psz_string = _("Blend");
 407     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 408     val.psz_string = "mean"; text.psz_string = _("Mean");
 409     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 410     val.psz_string = "bob"; text.psz_string = _("Bob");
 411     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 412     val.psz_string = "linear"; text.psz_string = _("Linear");
 413     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 414     val.psz_string = "x"; text.psz_string = "X";
 415     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 416
 417     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 418     {
 419         var_Set( p_vout, "deinterlace", val );
 420         if( val.psz_string ) free( val.psz_string );
 421     }
 422     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 423
 424
 425     var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 426     text.psz_string = _("Filters");
 427     var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
 428     var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
 429
 430     /* Calculate delay created by internal caching */
 431     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 432                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 433     if( p_input_thread )
 434     {
 435         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 436         vlc_object_release( p_input_thread );
 437     }
 438     else
 439     {
 440         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 441     }
 442
 443     if( vlc_thread_create( p_vout, "video output", RunThread,
 444                            VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) )
 445     {
 446         msg_Err( p_vout, "out of memory" );
 447         module_Unneed( p_vout, p_vout->p_module );
 448         vlc_object_detach( p_vout );
 449         vlc_object_destroy( p_vout );
 450         return NULL;
 451     }
 452
 453     if( p_vout->b_error )
 454     {
 455         msg_Err( p_vout, "video output creation failed" );
 456
 457         /* Make sure the thread is destroyed */
 458         p_vout->b_die = VLC_TRUE;
 459
 460         vlc_thread_join( p_vout );
 461
 462         vlc_object_detach( p_vout );
 463         vlc_object_destroy( p_vout );
 464         return NULL;
 465     }
 466
 467     return p_vout;
 468 }
 469
 470 /*****************************************************************************
 471  * vout_Destroy: destroys a previously created video output
 472  *****************************************************************************
 473  * Destroy a terminated thread.
 474  * The function will request a destruction of the specified thread. If pi_error
 475  * is NULL, it will return once the thread is destroyed. Else, it will be
 476  * update using one of the THREAD_* constants.
 477  *****************************************************************************/
 478 void vout_Destroy( vout_thread_t *p_vout )
 479 {
 480     vout_thread_t *p_another_vout;
 481     vlc_object_t *p_playlist = pl_Yield( p_vout );
 482
 483     /* Request thread destruction */
 484     p_vout->b_die = VLC_TRUE;
 485     vlc_thread_join( p_vout );
 486
 487     var_Destroy( p_vout, "intf-change" );
 488
 489     if( p_vout->psz_filter_chain ) free( p_vout->psz_filter_chain );
 490
 491     /* Free structure */
 492     vlc_object_destroy( p_vout );
 493
 494     p_another_vout = vlc_object_find( p_playlist,
 495                                       VLC_OBJECT_VOUT, FIND_ANYWHERE );
 496     if( p_another_vout == NULL )
 497     {
 498         vlc_value_t val;
 499         val.b_bool = VLC_TRUE;
 500         var_Set( p_playlist, "intf-show", val );
 501     }
 502     else
 503     {
 504         vlc_object_release( p_another_vout );
 505     }
 506     vlc_object_release( p_playlist );
 507 }
 508
 509 /*****************************************************************************
 510  * InitThread: initialize video output thread
 511  *****************************************************************************
 512  * This function is called from RunThread and performs the second step of the
 513  * initialization. It returns 0 on success. Note that the thread's flag are not
 514  * modified inside this function.
 515  *****************************************************************************/
 516 static int InitThread( vout_thread_t *p_vout )
 517 {
 518     int i, i_aspect_x, i_aspect_y;
 519
 520     vlc_mutex_lock( &p_vout->change_lock );
 521
 522 #ifdef STATS
 523     p_vout->c_loops = 0;
 524 #endif
 525
 526     /* Initialize output method, it allocates direct buffers for us */
 527     if( p_vout->pf_init( p_vout ) )
 528     {
 529         vlc_mutex_unlock( &p_vout->change_lock );
 530         return VLC_EGENERIC;
 531     }
 532
 533     if( !I_OUTPUTPICTURES )
 534     {
 535         msg_Err( p_vout, "plugin was unable to allocate at least "
 536                          "one direct buffer" );
 537         p_vout->pf_end( p_vout );
 538         vlc_mutex_unlock( &p_vout->change_lock );
 539         return VLC_EGENERIC;
 540     }
 541
 542     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 543     {
 544         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 545                          "our internal buffers must have overflown." );
 546         p_vout->pf_end( p_vout );
 547         vlc_mutex_unlock( &p_vout->change_lock );
 548         return VLC_EGENERIC;
 549     }
 550
 551     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 552
 553     AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );
 554
 555     msg_Dbg( p_vout, "picture in %ix%i (%i,%i,%ix%i), "
 556              "chroma %4.4s, ar %i:%i, sar %i:%i",
 557              p_vout->fmt_render.i_width, p_vout->fmt_render.i_height,
 558              p_vout->fmt_render.i_x_offset, p_vout->fmt_render.i_y_offset,
 559              p_vout->fmt_render.i_visible_width,
 560              p_vout->fmt_render.i_visible_height,
 561              (char*)&p_vout->fmt_render.i_chroma,
 562              i_aspect_x, i_aspect_y,
 563              p_vout->fmt_render.i_sar_num, p_vout->fmt_render.i_sar_den );
 564
 565     AspectRatio( p_vout->fmt_in.i_aspect, &i_aspect_x, &i_aspect_y );
 566
 567     msg_Dbg( p_vout, "picture user %ix%i (%i,%i,%ix%i), "
 568              "chroma %4.4s, ar %i:%i, sar %i:%i",
 569              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 570              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 571              p_vout->fmt_in.i_visible_width,
 572              p_vout->fmt_in.i_visible_height,
 573              (char*)&p_vout->fmt_in.i_chroma,
 574              i_aspect_x, i_aspect_y,
 575              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 576
 577     if( !p_vout->fmt_out.i_width || !p_vout->fmt_out.i_height )
 578     {
 579         p_vout->fmt_out.i_width = p_vout->fmt_out.i_visible_width =
 580             p_vout->output.i_width;
 581         p_vout->fmt_out.i_height = p_vout->fmt_out.i_visible_height =
 582             p_vout->output.i_height;
 583         p_vout->fmt_out.i_x_offset =  p_vout->fmt_out.i_y_offset = 0;
 584
 585         p_vout->fmt_out.i_aspect = p_vout->output.i_aspect;
 586         p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 587     }
 588     if( !p_vout->fmt_out.i_sar_num || !p_vout->fmt_out.i_sar_num )
 589     {
 590         p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_aspect *
 591             p_vout->fmt_out.i_height;
 592         p_vout->fmt_out.i_sar_den = VOUT_ASPECT_FACTOR *
 593             p_vout->fmt_out.i_width;
 594     }
 595
 596     vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
 597                  p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
 598
 599     AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
 600
 601     msg_Dbg( p_vout, "picture out %ix%i (%i,%i,%ix%i), "
 602              "chroma %4.4s, ar %i:%i, sar %i:%i",
 603              p_vout->fmt_out.i_width, p_vout->fmt_out.i_height,
 604              p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
 605              p_vout->fmt_out.i_visible_width,
 606              p_vout->fmt_out.i_visible_height,
 607              (char*)&p_vout->fmt_out.i_chroma,
 608              i_aspect_x, i_aspect_y,
 609              p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den );
 610
 611     /* Calculate shifts from system-updated masks */
 612     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 613                  p_vout->output.i_rmask );
 614     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 615                  p_vout->output.i_gmask );
 616     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 617                  p_vout->output.i_bmask );
 618
 619     /* Check whether we managed to create direct buffers similar to
 620      * the render buffers, ie same size and chroma */
 621     if( ( p_vout->output.i_width == p_vout->render.i_width )
 622      && ( p_vout->output.i_height == p_vout->render.i_height )
 623      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 624     {
 625         /* Cool ! We have direct buffers, we can ask the decoder to
 626          * directly decode into them ! Map the first render buffers to
 627          * the first direct buffers, but keep the first direct buffer
 628          * for memcpy operations */
 629         p_vout->b_direct = 1;
 630
 631         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 632         {
 633             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 634                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 635                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 636             {
 637                 /* We have enough direct buffers so there's no need to
 638                  * try to use system memory buffers. */
 639                 break;
 640             }
 641             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 642             I_RENDERPICTURES++;
 643         }
 644
 645         msg_Dbg( p_vout, "direct render, mapping "
 646                  "render pictures 0-%i to system pictures 1-%i",
 647                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 648     }
 649     else
 650     {
 651         /* Rats... Something is wrong here, we could not find an output
 652          * plugin able to directly render what we decode. See if we can
 653          * find a chroma plugin to do the conversion */
 654         p_vout->b_direct = 0;
 655
 656         /* Choose the best module */
 657         p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL, 0 );
 658
 659         if( p_vout->chroma.p_module == NULL )
 660         {
 661             msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
 662                      (char*)&p_vout->render.i_chroma,
 663                      (char*)&p_vout->output.i_chroma );
 664             p_vout->pf_end( p_vout );
 665             vlc_mutex_unlock( &p_vout->change_lock );
 666             return VLC_EGENERIC;
 667         }
 668
 669         msg_Dbg( p_vout, "indirect render, mapping "
 670                  "render pictures 0-%i to system pictures %i-%i",
 671                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 672                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 673
 674         /* Append render buffers after the direct buffers */
 675         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 676         {
 677             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 678             I_RENDERPICTURES++;
 679
 680             /* Check if we have enough render pictures */
 681             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 682                 break;
 683         }
 684     }
 685
 686     /* Link pictures back to their heap */
 687     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 688     {
 689         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 690     }
 691
 692     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 693     {
 694         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 695     }
 696
 697 /* XXX XXX mark thread ready */
 698     return VLC_SUCCESS;
 699 }
 700
 701 /*****************************************************************************
 702  * RunThread: video output thread
 703  *****************************************************************************
 704  * Video output thread. This function does only returns when the thread is
 705  * terminated. It handles the pictures arriving in the video heap and the
 706  * display device events.
 707  *****************************************************************************/
 708 static void RunThread( vout_thread_t *p_vout)
 709 {
 710     int             i_index;                                /* index in heap */
 711     int             i_idle_loops = 0;  /* loops without displaying a picture */
 712     mtime_t         current_date;                            /* current date */
 713     mtime_t         display_date;                            /* display date */
 714
 715     picture_t *     p_picture;                            /* picture pointer */
 716     picture_t *     p_last_picture = NULL;                   /* last picture */
 717     picture_t *     p_directbuffer;              /* direct buffer to display */
 718
 719     subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
 720
 721     input_thread_t *p_input = NULL ;           /* Parent input, if it exists */
 722
 723     vlc_value_t     val;
 724     vlc_bool_t      b_drop_late;
 725
 726     int             i_displayed = 0, i_lost = 0, i_loops = 0;
 727
 728     /*
 729      * Initialize thread
 730      */
 731     p_vout->b_error = InitThread( p_vout );
 732
 733     var_Create( p_vout, "drop-late-frames", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 734     var_Get( p_vout, "drop-late-frames", &val );
 735     b_drop_late = val.b_bool;
 736
 737     /* signal the creation of the vout */
 738     vlc_thread_ready( p_vout );
 739
 740     if( p_vout->b_error )
 741     {
 742         /* Destroy thread structures allocated by Create and InitThread */
 743         DestroyThread( p_vout );
 744         return;
 745     }
 746
 747     /*
 748      * Main loop - it is not executed if an error occurred during
 749      * initialization
 750      */
 751     while( (!p_vout->b_die) && (!p_vout->b_error) )
 752     {
 753         /* Initialize loop variables */
 754         p_picture = NULL;
 755         display_date = 0;
 756         current_date = mdate();
 757
 758         if( p_input && p_input->b_die )
 759         {
 760             vlc_object_release( p_input );
 761             p_input = NULL;
 762         }
 763
 764         i_loops++;
 765         if( i_loops % 20 == 0 )
 766         {
 767             if( !p_input )
 768             {
 769                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 770                                            FIND_PARENT );
 771             }
 772             if( p_input )
 773             {
 774                 vlc_mutex_lock( &p_input->counters.counters_lock );
 775                 stats_UpdateInteger( p_vout, p_input->counters.p_lost_pictures,
 776                                      i_lost , NULL);
 777                 stats_UpdateInteger( p_vout,
 778                                      p_input->counters.p_displayed_pictures,
 779                                      i_displayed , NULL);
 780                 i_displayed = i_lost = 0;
 781                 vlc_mutex_unlock( &p_input->counters.counters_lock );
 782             }
 783         }
 784 #if 0
 785         p_vout->c_loops++;
 786         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 787         {
 788             msg_Dbg( p_vout, "picture heap: %d/%d",
 789                      I_RENDERPICTURES, p_vout->i_heap_size );
 790         }
 791 #endif
 792
 793         /*
 794          * Find the picture to display (the one with the earliest date).
 795          * This operation does not need lock, since only READY_PICTUREs
 796          * are handled. */
 797         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 798         {
 799             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 800                 && ( (p_picture == NULL) ||
 801                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 802             {
 803                 p_picture = PP_RENDERPICTURE[i_index];
 804                 display_date = p_picture->date;
 805             }
 806         }
 807
 808         if( p_picture )
 809         {
 810             /* If we met the last picture, parse again to see whether there is
 811              * a more appropriate one. */
 812             if( p_picture == p_last_picture )
 813             {
 814                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 815                 {
 816                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 817                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 818                         && ((p_picture == p_last_picture) ||
 819                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 820                     {
 821                         p_picture = PP_RENDERPICTURE[i_index];
 822                         display_date = p_picture->date;
 823                     }
 824                 }
 825             }
 826
 827             /* If we found better than the last picture, destroy it */
 828             if( p_last_picture && p_picture != p_last_picture )
 829             {
 830                 vlc_mutex_lock( &p_vout->picture_lock );
 831                 if( p_last_picture->i_refcount )
 832                 {
 833                     p_last_picture->i_status = DISPLAYED_PICTURE;
 834                 }
 835                 else
 836                 {
 837                     p_last_picture->i_status = DESTROYED_PICTURE;
 838                     p_vout->i_heap_size--;
 839                 }
 840                 vlc_mutex_unlock( &p_vout->picture_lock );
 841                 p_last_picture = NULL;
 842             }
 843
 844             /* Compute FPS rate */
 845             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 846                 = display_date;
 847
 848             if( !p_picture->b_force &&
 849                 p_picture != p_last_picture &&
 850                 display_date < current_date + p_vout->render_time &&
 851                 b_drop_late )
 852             {
 853                 /* Picture is late: it will be destroyed and the thread
 854                  * will directly choose the next picture */
 855                 vlc_mutex_lock( &p_vout->picture_lock );
 856                 if( p_picture->i_refcount )
 857                 {
 858                     /* Pretend we displayed the picture, but don't destroy
 859                      * it since the decoder might still need it. */
 860                     p_picture->i_status = DISPLAYED_PICTURE;
 861                 }
 862                 else
 863                 {
 864                     /* Destroy the picture without displaying it */
 865                     p_picture->i_status = DESTROYED_PICTURE;
 866                     p_vout->i_heap_size--;
 867                 }
 868                 msg_Warn( p_vout, "late picture skipped ("I64Fd")",
 869                                   current_date - display_date );
 870                 i_lost++;
 871                 vlc_mutex_unlock( &p_vout->picture_lock );
 872
 873                 continue;
 874             }
 875
 876             if( display_date >
 877                 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
 878             {
 879                 /* Picture is waaay too early: it will be destroyed */
 880                 vlc_mutex_lock( &p_vout->picture_lock );
 881                 if( p_picture->i_refcount )
 882                 {
 883                     /* Pretend we displayed the picture, but don't destroy
 884                      * it since the decoder might still need it. */
 885                     p_picture->i_status = DISPLAYED_PICTURE;
 886                 }
 887                 else
 888                 {
 889                     /* Destroy the picture without displaying it */
 890                     p_picture->i_status = DESTROYED_PICTURE;
 891                     p_vout->i_heap_size--;
 892                 }
 893                 i_lost++;
 894                 msg_Warn( p_vout, "vout warning: early picture skipped "
 895                           "("I64Fd")", display_date - current_date
 896                           - p_vout->i_pts_delay );
 897                 vlc_mutex_unlock( &p_vout->picture_lock );
 898
 899                 continue;
 900             }
 901
 902             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 903             {
 904                 /* A picture is ready to be rendered, but its rendering date
 905                  * is far from the current one so the thread will perform an
 906                  * empty loop as if no picture were found. The picture state
 907                  * is unchanged */
 908                 p_picture    = NULL;
 909                 display_date = 0;
 910             }
 911             else if( p_picture == p_last_picture )
 912             {
 913                 /* We are asked to repeat the previous picture, but we first
 914                  * wait for a couple of idle loops */
 915                 if( i_idle_loops < 4 )
 916                 {
 917                     p_picture    = NULL;
 918                     display_date = 0;
 919                 }
 920                 else
 921                 {
 922                     /* We set the display date to something high, otherwise
 923                      * we'll have lots of problems with late pictures */
 924                     display_date = current_date + p_vout->render_time;
 925                 }
 926             }
 927         }
 928
 929         if( p_picture == NULL )
 930         {
 931             i_idle_loops++;
 932         }
 933
 934         /* Video Filter2 stuff */
 935         if( p_vout->b_vfilter_change == VLC_TRUE )
 936         {
 937             int i;
 938             RemoveVideoFilters2( p_vout );
 939             for( i = 0; i < p_vout->i_vfilters_cfg; i++ )
 940             {
 941                 filter_t *p_vfilter =
 942                     p_vout->pp_vfilters[p_vout->i_vfilters] =
 943                         vlc_object_create( p_vout, VLC_OBJECT_FILTER );
 944
 945                 vlc_object_attach( p_vfilter, p_vout );
 946
 947                 p_vfilter->pf_vout_buffer_new = video_new_buffer_filter;
 948                 p_vfilter->pf_vout_buffer_del = video_del_buffer_filter;
 949
 950                 if( !p_vout->i_vfilters )
 951                 {
 952                     p_vfilter->fmt_in.video = p_vout->fmt_render;
 953                 }
 954                 else
 955                 {
 956                     p_vfilter->fmt_in.video = (p_vfilter-1)->fmt_out.video;
 957                 }
 958                 /* TODO: one day filters in the middle of the chain might
 959                  * have a different fmt_out.video than fmt_render ... */
 960                 p_vfilter->fmt_out.video = p_vout->fmt_render;
 961
 962                 p_vfilter->p_cfg = p_vout->p_vfilters_cfg[i];
 963                 p_vfilter->p_module = module_Need( p_vfilter, "video filter2",
 964                                                  p_vout->psz_vfilters[i], 0 );
 965
 966                 if( p_vfilter->p_module )
 967                 {
 968                     p_vfilter->p_owner =
 969                         malloc( sizeof( filter_owner_sys_t ) );
 970                     p_vfilter->p_owner->p_vout = p_vout;
 971                     p_vout->i_vfilters++;
 972                     msg_Dbg( p_vout, "video filter found (%s)",
 973                              p_vout->psz_vfilters[i] );
 974                 }
 975                 else
 976                 {
 977                     msg_Err( p_vout, "no video filter found (%s)",
 978                              p_vout->psz_vfilters[i] );
 979                     vlc_object_detach( p_vfilter );
 980                     vlc_object_destroy( p_vfilter );
 981                 }
 982             }
 983             p_vout->b_vfilter_change = VLC_FALSE;
 984         }
 985
 986         if( p_picture )
 987         {
 988             int i;
 989             for( i = 0; i < p_vout->i_vfilters; i++ )
 990             {
 991                 picture_t *p_old = p_picture;
 992                 p_picture  = p_vout->pp_vfilters[i]->pf_video_filter(
 993                                  p_vout->pp_vfilters[i], p_picture );
 994                 if( !p_picture )
 995                 {
 996                     break;
 997                 }
 998                 /* FIXME: this is kind of wrong
 999                  * if you have 2 or more vfilters and the 2nd breaks,
1000                  * on the next loop the 1st one will be applied again */
1001
1002                 /* if p_old and p_picture are the same (ie the filter
1003                  * worked on the old picture), then following code is
1004                  * still alright since i_status gets changed back to
1005                  * the right value */
1006                 if( p_old->i_refcount )
1007                 {
1008                     p_old->i_status = DISPLAYED_PICTURE;
1009                 }
1010                 else
1011                 {
1012                     p_old->i_status = DESTROYED_PICTURE;
1013                 }
1014                 p_picture->i_status = READY_PICTURE;
1015             }
1016         }
1017
1018         if( p_picture && p_vout->b_snapshot )
1019         {
1020             p_vout->b_snapshot = VLC_FALSE;
1021             vout_Snapshot( p_vout, p_picture );
1022         }
1023
1024         /*
1025          * Check for subpictures to display
1026          */
1027         if( display_date > 0 )
1028         {
1029             if( !p_input )
1030             {
1031                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
1032                                            FIND_PARENT );
1033             }
1034             p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date,
1035             p_input ? var_GetBool( p_input, "state" ) == PAUSE_S : VLC_FALSE );
1036         }
1037
1038         /*
1039          * Perform rendering
1040          */
1041         i_displayed++;
1042         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
1043
1044         /*
1045          * Call the plugin-specific rendering method if there is one
1046          */
1047         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
1048         {
1049             /* Render the direct buffer returned by vout_RenderPicture */
1050             p_vout->pf_render( p_vout, p_directbuffer );
1051         }
1052
1053         /*
1054          * Sleep, wake up
1055          */
1056         if( display_date != 0 && p_directbuffer != NULL )
1057         {
1058             mtime_t current_render_time = mdate() - current_date;
1059             /* if render time is very large we don't include it in the mean */
1060             if( current_render_time < p_vout->render_time +
1061                 VOUT_DISPLAY_DELAY )
1062             {
1063                 /* Store render time using a sliding mean weighting to
1064                  * current value in a 3 to 1 ratio*/
1065                 p_vout->render_time *= 3;
1066                 p_vout->render_time += current_render_time;
1067                 p_vout->render_time >>= 2;
1068             }
1069         }
1070
1071         /* Give back change lock */
1072         vlc_mutex_unlock( &p_vout->change_lock );
1073
1074         /* Sleep a while or until a given date */
1075         if( display_date != 0 )
1076         {
1077             /* If there are filters in the chain, better give them the picture
1078              * in advance */
1079             if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
1080             {
1081                 mwait( display_date - VOUT_MWAIT_TOLERANCE );
1082             }
1083         }
1084         else
1085         {
1086             msleep( VOUT_IDLE_SLEEP );
1087         }
1088
1089         /* On awakening, take back lock and send immediately picture
1090          * to display. */
1091         vlc_mutex_lock( &p_vout->change_lock );
1092
1093         /*
1094          * Display the previously rendered picture
1095          */
1096         if( p_picture != NULL && p_directbuffer != NULL )
1097         {
1098             /* Display the direct buffer returned by vout_RenderPicture */
1099             if( p_vout->pf_display )
1100             {
1101                 p_vout->pf_display( p_vout, p_directbuffer );
1102             }
1103
1104             /* Tell the vout this was the last picture and that it does not
1105              * need to be forced anymore. */
1106             p_last_picture = p_picture;
1107             p_last_picture->b_force = 0;
1108         }
1109
1110         if( p_picture != NULL )
1111         {
1112             /* Reinitialize idle loop count */
1113             i_idle_loops = 0;
1114         }
1115
1116         /*
1117          * Check events and manage thread
1118          */
1119         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
1120         {
1121             /* A fatal error occurred, and the thread must terminate
1122              * immediately, without displaying anything - setting b_error to 1
1123              * causes the immediate end of the main while() loop. */
1124             p_vout->b_error = 1;
1125         }
1126
1127         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
1128         {
1129             /* this must only happen when the vout plugin is incapable of
1130              * rescaling the picture itself. In this case we need to destroy
1131              * the current picture buffers and recreate new ones with the right
1132              * dimensions */
1133             int i;
1134
1135             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
1136
1137             p_vout->pf_end( p_vout );
1138             for( i = 0; i < I_OUTPUTPICTURES; i++ )
1139                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
1140
1141             I_OUTPUTPICTURES = 0;
1142             if( p_vout->pf_init( p_vout ) )
1143             {
1144                 msg_Err( p_vout, "cannot resize display" );
1145                 /* FIXME: pf_end will be called again in EndThread() */
1146                 p_vout->b_error = 1;
1147             }
1148
1149             /* Need to reinitialise the chroma plugin */
1150             if( p_vout->chroma.p_module )
1151             {
1152                 if( p_vout->chroma.p_module->pf_deactivate )
1153                     p_vout->chroma.p_module->pf_deactivate( VLC_OBJECT(p_vout) );
1154                 p_vout->chroma.p_module->pf_activate( VLC_OBJECT(p_vout) );
1155             }
1156         }
1157
1158         if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1159         {
1160             /* This happens when the picture buffers need to be recreated.
1161              * This is useful on multimonitor displays for instance.
1162              *
1163              * Warning: This only works when the vout creates only 1 picture
1164              * buffer!! */
1165             p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1166
1167             if( !p_vout->b_direct )
1168             {
1169                 module_Unneed( p_vout, p_vout->chroma.p_module );
1170             }
1171
1172             vlc_mutex_lock( &p_vout->picture_lock );
1173
1174             p_vout->pf_end( p_vout );
1175
1176             I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1177
1178             p_vout->b_error = InitThread( p_vout );
1179
1180             vlc_mutex_unlock( &p_vout->picture_lock );
1181         }
1182     }
1183
1184     if( p_input )
1185     {
1186         vlc_object_release( p_input );
1187     }
1188
1189     /*
1190      * Error loop - wait until the thread destruction is requested
1191      */
1192     if( p_vout->b_error )
1193     {
1194         ErrorThread( p_vout );
1195     }
1196
1197     /* End of thread */
1198     EndThread( p_vout );
1199
1200     /* Destroy thread structures allocated by CreateThread */
1201     DestroyThread( p_vout );
1202 }
1203
1204 /*****************************************************************************
1205  * ErrorThread: RunThread() error loop
1206  *****************************************************************************
1207  * This function is called when an error occurred during thread main's loop.
1208  * The thread can still receive feed, but must be ready to terminate as soon
1209  * as possible.
1210  *****************************************************************************/
1211 static void ErrorThread( vout_thread_t *p_vout )
1212 {
1213     /* Wait until a `die' order */
1214     while( !p_vout->b_die )
1215     {
1216         /* Sleep a while */
1217         msleep( VOUT_IDLE_SLEEP );
1218     }
1219 }
1220
1221 /*****************************************************************************
1222  * EndThread: thread destruction
1223  *****************************************************************************
1224  * This function is called when the thread ends after a sucessful
1225  * initialization. It frees all resources allocated by InitThread.
1226  *****************************************************************************/
1227 static void EndThread( vout_thread_t *p_vout )
1228 {
1229     int     i_index;                                        /* index in heap */
1230
1231 #ifdef STATS
1232     {
1233         struct tms cpu_usage;
1234         times( &cpu_usage );
1235
1236         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1237                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1238     }
1239 #endif
1240
1241     if( !p_vout->b_direct )
1242     {
1243         module_Unneed( p_vout, p_vout->chroma.p_module );
1244     }
1245
1246     /* Destroy all remaining pictures */
1247     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1248     {
1249         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1250         {
1251             free( p_vout->p_picture[i_index].p_data_orig );
1252         }
1253     }
1254
1255     /* Destroy subpicture unit */
1256     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), VLC_FALSE );
1257     spu_Destroy( p_vout->p_spu );
1258
1259     /* Destroy the video filters2 */
1260     RemoveVideoFilters2( p_vout );
1261
1262     /* Destroy translation tables */
1263     p_vout->pf_end( p_vout );
1264
1265     /* Release the change lock */
1266     vlc_mutex_unlock( &p_vout->change_lock );
1267 }
1268
1269 /*****************************************************************************
1270  * DestroyThread: thread destruction
1271  *****************************************************************************
1272  * This function is called when the thread ends. It frees all ressources
1273  * allocated by CreateThread. Status is available at this stage.
1274  *****************************************************************************/
1275 static void DestroyThread( vout_thread_t *p_vout )
1276 {
1277     /* Destroy the locks */
1278     vlc_mutex_destroy( &p_vout->picture_lock );
1279     vlc_mutex_destroy( &p_vout->change_lock );
1280
1281     /* Release the module */
1282     if( p_vout && p_vout->p_module )
1283     {
1284         module_Unneed( p_vout, p_vout->p_module );
1285     }
1286 }
1287
1288 /* following functions are local */
1289
1290 static int ReduceHeight( int i_ratio )
1291 {
1292     int i_dummy = VOUT_ASPECT_FACTOR;
1293     int i_pgcd  = 1;
1294
1295     if( !i_ratio )
1296     {
1297         return i_pgcd;
1298     }
1299
1300     /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1301     while( !(i_ratio & 1) && !(i_dummy & 1) )
1302     {
1303         i_ratio >>= 1;
1304         i_dummy >>= 1;
1305         i_pgcd  <<= 1;
1306     }
1307
1308     while( !(i_ratio % 3) && !(i_dummy % 3) )
1309     {
1310         i_ratio /= 3;
1311         i_dummy /= 3;
1312         i_pgcd  *= 3;
1313     }
1314
1315     while( !(i_ratio % 5) && !(i_dummy % 5) )
1316     {
1317         i_ratio /= 5;
1318         i_dummy /= 5;
1319         i_pgcd  *= 5;
1320     }
1321
1322     return i_pgcd;
1323 }
1324
1325 static void AspectRatio( int i_aspect, int *i_aspect_x, int *i_aspect_y )
1326 {
1327     unsigned int i_pgcd = ReduceHeight( i_aspect );
1328     *i_aspect_x = i_aspect / i_pgcd;
1329     *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
1330 }
1331
1332 /*****************************************************************************
1333  * BinaryLog: computes the base 2 log of a binary value
1334  *****************************************************************************
1335  * This functions is used by MaskToShift, to get a bit index from a binary
1336  * value.
1337  *****************************************************************************/
1338 static int BinaryLog( uint32_t i )
1339 {
1340     int i_log = 0;
1341
1342     if( i == 0 ) return -31337;
1343
1344     if( i & 0xffff0000 ) i_log += 16;
1345     if( i & 0xff00ff00 ) i_log += 8;
1346     if( i & 0xf0f0f0f0 ) i_log += 4;
1347     if( i & 0xcccccccc ) i_log += 2;
1348     if( i & 0xaaaaaaaa ) i_log += 1;
1349
1350     return i_log;
1351 }
1352
1353 /*****************************************************************************
1354  * MaskToShift: transform a color mask into right and left shifts
1355  *****************************************************************************
1356  * This function is used for obtaining color shifts from masks.
1357  *****************************************************************************/
1358 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1359 {
1360     uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
1361
1362     if( !i_mask )
1363     {
1364         *pi_left = *pi_right = 0;
1365         return;
1366     }
1367
1368     /* Get bits */
1369     i_low = i_high = i_mask;
1370
1371     i_low &= - (int32_t)i_low;          /* lower bit of the mask */
1372     i_high += i_low;                    /* higher bit of the mask */
1373
1374     /* Transform bits into an index. Also deal with i_high overflow, which
1375      * is faster than changing the BinaryLog code to handle 64 bit integers. */
1376     i_low =  BinaryLog (i_low);
1377     i_high = i_high ? BinaryLog (i_high) : 32;
1378
1379     /* Update pointers and return */
1380     *pi_left =   i_low;
1381     *pi_right = (8 - i_high + i_low);
1382 }
1383
1384 /*****************************************************************************
1385  * vout_VarCallback: generic callback for intf variables
1386  *****************************************************************************/
1387 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1388                       vlc_value_t old_value, vlc_value_t new_value,
1389                       void * unused )
1390 {
1391     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1392     vlc_value_t val;
1393     val.b_bool = VLC_TRUE;
1394     var_Set( p_vout, "intf-change", val );
1395     return VLC_SUCCESS;
1396 }
1397
1398 /*****************************************************************************
1399  * Helper thread for object variables callbacks.
1400  * Only used to avoid deadlocks when using the video embedded mode.
1401  *****************************************************************************/
1402 typedef struct suxor_thread_t
1403 {
1404     VLC_COMMON_MEMBERS
1405     input_thread_t *p_input;
1406
1407 } suxor_thread_t;
1408
1409 static void SuxorRestartVideoES( suxor_thread_t *p_this )
1410 {
1411     vlc_value_t val;
1412
1413     vlc_thread_ready( p_this );
1414
1415     /* Now restart current video stream */
1416     var_Get( p_this->p_input, "video-es", &val );
1417     if( val.i_int >= 0 )
1418     {
1419         vlc_value_t val_es;
1420         val_es.i_int = -VIDEO_ES;
1421         var_Set( p_this->p_input, "video-es", val_es );
1422         var_Set( p_this->p_input, "video-es", val );
1423     }
1424
1425     vlc_object_release( p_this->p_input );
1426
1427 #ifdef WIN32
1428     CloseHandle( p_this->thread_id );
1429 #endif
1430
1431     vlc_object_destroy( p_this );
1432 }
1433
1434 /*****************************************************************************
1435  * object variables callbacks: a bunch of object variables are used by the
1436  * interfaces to interact with the vout.
1437  *****************************************************************************/
1438 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1439                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1440 {
1441     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1442     input_thread_t *p_input;
1443     vlc_value_t val;
1444
1445     char *psz_mode = newval.psz_string;
1446     char *psz_filter, *psz_deinterlace = NULL;
1447
1448     var_Get( p_vout, "vout-filter", &val );
1449     psz_filter = val.psz_string;
1450     if( psz_filter ) psz_deinterlace = strstr( psz_filter, "deinterlace" );
1451
1452     if( !psz_mode || !*psz_mode )
1453     {
1454         if( psz_deinterlace )
1455         {
1456             char *psz_src = psz_deinterlace + sizeof("deinterlace") - 1;
1457             if( psz_src[0] == ':' ) psz_src++;
1458             memmove( psz_deinterlace, psz_src, strlen(psz_src) + 1 );
1459         }
1460     }
1461     else if( !psz_deinterlace )
1462     {
1463         psz_filter = realloc( psz_filter, strlen( psz_filter ) +
1464                               sizeof(":deinterlace") );
1465         if( psz_filter && *psz_filter ) strcat( psz_filter, ":" );
1466         strcat( psz_filter, "deinterlace" );
1467     }
1468
1469     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1470                                                  FIND_PARENT );
1471     if( !p_input ) return VLC_EGENERIC;
1472
1473     if( psz_mode && *psz_mode )
1474     {
1475         /* Modify input as well because the vout might have to be restarted */
1476         val.psz_string = psz_mode;
1477         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1478         var_Set( p_input, "deinterlace-mode", val );
1479     }
1480     vlc_object_release( p_input );
1481
1482     val.b_bool = VLC_TRUE;
1483     var_Set( p_vout, "intf-change", val );
1484
1485     val.psz_string = psz_filter;
1486     var_Set( p_vout, "vout-filter", val );
1487     if( psz_filter ) free( psz_filter );
1488
1489     return VLC_SUCCESS;
1490 }
1491
1492 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1493                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1494 {
1495     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1496     input_thread_t *p_input;
1497     vlc_value_t val;
1498
1499     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1500                                                  FIND_PARENT );
1501     if (!p_input)
1502     {
1503         msg_Err( p_vout, "Input not found" );
1504         return( VLC_EGENERIC );
1505     }
1506
1507     val.b_bool = VLC_TRUE;
1508     var_Set( p_vout, "intf-change", val );
1509
1510     /* Modify input as well because the vout might have to be restarted */
1511     val.psz_string = newval.psz_string;
1512     var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1513
1514     var_Set( p_input, "vout-filter", val );
1515
1516     /* Now restart current video stream */
1517     var_Get( p_input, "video-es", &val );
1518     if( val.i_int >= 0 )
1519     {
1520         suxor_thread_t *p_suxor =
1521             vlc_object_create( p_vout, sizeof(suxor_thread_t) );
1522         p_suxor->p_input = p_input;
1523         p_vout->b_filter_change = VLC_TRUE;
1524         vlc_object_yield( p_input );
1525         vlc_thread_create( p_suxor, "suxor", SuxorRestartVideoES,
1526                            VLC_THREAD_PRIORITY_LOW, VLC_FALSE );
1527     }
1528
1529     vlc_object_release( p_input );
1530
1531     return VLC_SUCCESS;
1532 }
1533
1534 /*****************************************************************************
1535  * Video Filter2 stuff
1536  *****************************************************************************/
1537 static int ParseVideoFilter2Chain( vout_thread_t *p_vout, char *psz_vfilters )
1538 {
1539     int i;
1540     for( i = 0; i < p_vout->i_vfilters_cfg; i++ )
1541     {
1542         /* FIXME: this should be moved in a separate function */
1543         struct sout_cfg_t *p_cfg =
1544             p_vout->p_vfilters_cfg[p_vout->i_vfilters_cfg];
1545         while( p_cfg )
1546         {
1547             struct sout_cfg_t *p_next = p_cfg->p_next;
1548             free( p_cfg->psz_name );
1549             free( p_cfg->psz_value );
1550             free( p_cfg );
1551             p_cfg = p_next;
1552         }
1553         /* </FIXME> */
1554
1555         free( p_vout->psz_vfilters[p_vout->i_vfilters_cfg] );
1556     }
1557     p_vout->i_vfilters_cfg = 0;
1558     if( psz_vfilters && *psz_vfilters )
1559     {
1560         char *psz_parser = psz_vfilters;
1561
1562         while( psz_parser && *psz_parser )
1563         {
1564             psz_parser = sout_CfgCreate(
1565                             &p_vout->psz_vfilters[p_vout->i_vfilters_cfg],
1566                             &p_vout->p_vfilters_cfg[p_vout->i_vfilters_cfg],
1567                             psz_parser );
1568             msg_Dbg( p_vout, "adding vfilter: %s\n",
1569                      p_vout->psz_vfilters[p_vout->i_vfilters_cfg] );
1570             p_vout->i_vfilters_cfg++;
1571             if( psz_parser && psz_parser )
1572             {
1573                 if( p_vout->i_vfilters_cfg == MAX_VFILTERS )
1574                 {
1575                     msg_Warn( p_vout,
1576                   "maximum number of video filters reached. \"%s\" discarded",
1577                               psz_parser );
1578                     break;
1579                 }
1580             }
1581         }
1582     }
1583     return VLC_SUCCESS;
1584 }
1585
1586 static int VideoFilter2Callback( vlc_object_t *p_this, char const *psz_cmd,
1587                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1588 {
1589     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1590
1591     ParseVideoFilter2Chain( p_vout, newval.psz_string );
1592     p_vout->b_vfilter_change = VLC_TRUE;
1593
1594     return VLC_SUCCESS;
1595 }
1596
1597 static void RemoveVideoFilters2( vout_thread_t *p_vout )
1598 {
1599     int i;
1600     for( i = 0; i < p_vout->i_vfilters; i++ )
1601     {
1602         vlc_object_detach( p_vout->pp_vfilters[i] );
1603         if( p_vout->pp_vfilters[i]->p_module )
1604         {
1605             module_Unneed( p_vout->pp_vfilters[i],
1606                            p_vout->pp_vfilters[i]->p_module );
1607         }
1608
1609         free( p_vout->pp_vfilters[i]->p_owner );
1610         vlc_object_destroy( p_vout->pp_vfilters[i] );
1611     }
1612     p_vout->i_vfilters = 0;
1613 }