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 input before bailing out */
 118         if( p_vout )
 119         {
 120             vlc_object_t *p_playlist;
 121
 122             p_playlist = vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
 123                                           FIND_ANYWHERE );
 124
 125             if( p_playlist )
 126             {
 127                 spu_Attach( p_vout->p_spu, p_this, VLC_FALSE );
 128                 vlc_object_detach( p_vout );
 129                 vlc_object_attach( p_vout, p_playlist );
 130
 131                 vlc_object_release( p_playlist );
 132             }
 133             else
 134             {
 135                 msg_Dbg( p_this, "cannot find playlist, destroying vout" );
 136                 vlc_object_detach( p_vout );
 137                 vout_Destroy( p_vout );
 138             }
 139         }
 140         return NULL;
 141     }
 142
 143     /* If a video output was provided, lock it, otherwise look for one. */
 144     if( p_vout )
 145     {
 146         vlc_object_yield( p_vout );
 147     }
 148     else
 149     {
 150         p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD );
 151
 152         if( !p_vout )
 153         {
 154             playlist_t *p_playlist;
 155
 156             p_playlist = vlc_object_find( p_this,
 157                                           VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
 158             if( p_playlist )
 159             {
 160                 vlc_mutex_lock( &p_playlist->gc_lock );
 161                 p_vout = vlc_object_find( p_playlist,
 162                                           VLC_OBJECT_VOUT, FIND_CHILD );
 163                 /* only first children of p_input for unused vout */
 164                 if( p_vout && p_vout->p_parent != (vlc_object_t *)p_playlist )
 165                 {
 166                     vlc_object_release( p_vout );
 167                     p_vout = NULL;
 168                 }
 169                 vlc_mutex_unlock( &p_playlist->gc_lock );
 170                 vlc_object_release( p_playlist );
 171             }
 172         }
 173     }
 174
 175     /* If we now have a video output, check it has the right properties */
 176     if( p_vout )
 177     {
 178         char *psz_filter_chain;
 179         vlc_value_t val;
 180
 181         /* We don't directly check for the "vout-filter" variable for obvious
 182          * performance reasons. */
 183         if( p_vout->b_filter_change )
 184         {
 185             var_Get( p_vout, "vout-filter", &val );
 186             psz_filter_chain = val.psz_string;
 187
 188             if( psz_filter_chain && !*psz_filter_chain )
 189             {
 190                 free( psz_filter_chain );
 191                 psz_filter_chain = NULL;
 192             }
 193             if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
 194             {
 195                 free( p_vout->psz_filter_chain );
 196                 p_vout->psz_filter_chain = NULL;
 197             }
 198
 199             if( !psz_filter_chain && !p_vout->psz_filter_chain )
 200             {
 201                 p_vout->b_filter_change = VLC_FALSE;
 202             }
 203
 204             if( psz_filter_chain ) free( psz_filter_chain );
 205         }
 206
 207         if( ( p_vout->fmt_render.i_width != p_fmt->i_width ) ||
 208             ( p_vout->fmt_render.i_height != p_fmt->i_height ) ||
 209             ( p_vout->fmt_render.i_chroma != p_fmt->i_chroma ) ||
 210             ( p_vout->fmt_render.i_aspect != p_fmt->i_aspect ) ||
 211             p_vout->b_filter_change )
 212         {
 213             /* We are not interested in this format, close this vout */
 214             vlc_object_detach( p_vout );
 215             vlc_object_release( p_vout );
 216             vout_Destroy( p_vout );
 217             p_vout = NULL;
 218         }
 219         else
 220         {
 221             /* This video output is cool! Hijack it. */
 222             vlc_object_detach( p_vout );
 223             spu_Attach( p_vout->p_spu, p_this, VLC_TRUE );
 224             vlc_object_attach( p_vout, p_this );
 225             vlc_object_release( p_vout );
 226         }
 227     }
 228
 229     if( !p_vout )
 230     {
 231         msg_Dbg( p_this, "no usable vout present, spawning one" );
 232
 233         p_vout = vout_Create( p_this, p_fmt );
 234     }
 235
 236     return p_vout;
 237 }
 238
 239 /*****************************************************************************
 240  * vout_Create: creates a new video output thread
 241  *****************************************************************************
 242  * This function creates a new video output thread, and returns a pointer
 243  * to its description. On error, it returns NULL.
 244  *****************************************************************************/
 245 vout_thread_t * __vout_Create( vlc_object_t *p_parent, video_format_t *p_fmt )
 246 {
 247     vout_thread_t  * p_vout;                            /* thread descriptor */
 248     input_thread_t * p_input_thread;
 249     int              i_index;                               /* loop variable */
 250     char           * psz_plugin;
 251     vlc_value_t      val, text;
 252
 253     unsigned int i_width = p_fmt->i_width;
 254     unsigned int i_height = p_fmt->i_height;
 255     vlc_fourcc_t i_chroma = p_fmt->i_chroma;
 256     unsigned int i_aspect = p_fmt->i_aspect;
 257
 258     /* Allocate descriptor */
 259     p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
 260     if( p_vout == NULL )
 261     {
 262         msg_Err( p_parent, "out of memory" );
 263         return NULL;
 264     }
 265
 266     /* Initialize pictures - translation tables and functions
 267      * will be initialized later in InitThread */
 268     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
 269     {
 270         p_vout->p_picture[i_index].pf_lock = NULL;
 271         p_vout->p_picture[i_index].pf_unlock = NULL;
 272         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 273         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 274         p_vout->p_picture[i_index].b_slow   = 0;
 275     }
 276
 277     /* No images in the heap */
 278     p_vout->i_heap_size = 0;
 279
 280     /* Initialize the rendering heap */
 281     I_RENDERPICTURES = 0;
 282
 283     vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
 284                  p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 285     p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
 286     p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
 287
 288     p_vout->render.i_width    = i_width;
 289     p_vout->render.i_height   = i_height;
 290     p_vout->render.i_chroma   = i_chroma;
 291     p_vout->render.i_aspect   = i_aspect;
 292
 293     p_vout->render.i_rmask    = 0;
 294     p_vout->render.i_gmask    = 0;
 295     p_vout->render.i_bmask    = 0;
 296
 297     p_vout->render.i_last_used_pic = -1;
 298     p_vout->render.b_allow_modify_pics = 1;
 299
 300     /* Zero the output heap */
 301     I_OUTPUTPICTURES = 0;
 302     p_vout->output.i_width    = 0;
 303     p_vout->output.i_height   = 0;
 304     p_vout->output.i_chroma   = 0;
 305     p_vout->output.i_aspect   = 0;
 306
 307     p_vout->output.i_rmask    = 0;
 308     p_vout->output.i_gmask    = 0;
 309     p_vout->output.i_bmask    = 0;
 310
 311     /* Initialize misc stuff */
 312     p_vout->i_changes    = 0;
 313     p_vout->f_gamma      = 0;
 314     p_vout->b_grayscale  = 0;
 315     p_vout->b_info       = 0;
 316     p_vout->b_interface  = 0;
 317     p_vout->b_scale      = 1;
 318     p_vout->b_fullscreen = 0;
 319     p_vout->i_alignment  = 0;
 320     p_vout->render_time  = 10;
 321     p_vout->c_fps_samples = 0;
 322     p_vout->b_filter_change = 0;
 323     p_vout->pf_control = 0;
 324     p_vout->p_parent_intf = 0;
 325     p_vout->i_par_num = p_vout->i_par_den = 1;
 326
 327     /* Initialize locks */
 328     vlc_mutex_init( p_vout, &p_vout->picture_lock );
 329     vlc_mutex_init( p_vout, &p_vout->change_lock );
 330
 331     /* Mouse coordinates */
 332     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 333     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 334     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 335     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 336     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 337
 338     /* Initialize subpicture unit */
 339     p_vout->p_spu = spu_Create( p_vout );
 340     spu_Attach( p_vout->p_spu, p_parent, VLC_TRUE );
 341
 342     /* Attach the new object now so we can use var inheritance below */
 343     vlc_object_attach( p_vout, p_parent );
 344
 345     spu_Init( p_vout->p_spu );
 346
 347     /* Take care of some "interface/control" related initialisations */
 348     vout_IntfInit( p_vout );
 349
 350     /* If the parent is not a VOUT object, that means we are at the start of
 351      * the video output pipe */
 352     if( p_parent->i_object_type != VLC_OBJECT_VOUT )
 353     {
 354         /* Look for the default filter configuration */
 355         var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 356         var_Get( p_vout, "vout-filter", &val );
 357         p_vout->psz_filter_chain = val.psz_string;
 358
 359         /* Apply video filter2 objects on the first vout */
 360         var_Create( p_vout, "video-filter",
 361                     VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 362         var_Get( p_vout, "video-filter", &val );
 363         ParseVideoFilter2Chain( p_vout, val.psz_string );
 364         free( val.psz_string );
 365     }
 366     else
 367     {
 368         /* continue the parent's filter chain */
 369         char *psz_end;
 370
 371         psz_end = strchr( ((vout_thread_t *)p_parent)->psz_filter_chain, ':' );
 372         if( psz_end && *(psz_end+1) )
 373             p_vout->psz_filter_chain = strdup( psz_end+1 );
 374         else p_vout->psz_filter_chain = NULL;
 375
 376         /* Create a video filter2 var ... but don't inherit values */
 377         var_Create( p_vout, "video-filter", VLC_VAR_STRING );
 378         ParseVideoFilter2Chain( p_vout, NULL );
 379     }
 380
 381     var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
 382     p_vout->b_vfilter_change = VLC_TRUE;
 383     p_vout->i_vfilters = 0;
 384
 385     /* Choose the video output module */
 386     if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 387     {
 388         var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 389         var_Get( p_vout, "vout", &val );
 390         psz_plugin = val.psz_string;
 391     }
 392     else
 393     {
 394         /* the filter chain is a string list of filters separated by double
 395          * colons */
 396         char *psz_end;
 397
 398         psz_end = strchr( p_vout->psz_filter_chain, ':' );
 399         if( psz_end )
 400             psz_plugin = strndup( p_vout->psz_filter_chain,
 401                                   psz_end - p_vout->psz_filter_chain );
 402         else psz_plugin = strdup( p_vout->psz_filter_chain );
 403     }
 404
 405     /* Create the vout thread */
 406     p_vout->p_module = module_Need( p_vout,
 407         ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
 408         "video filter" : "video output", psz_plugin, 0 );
 409
 410     if( psz_plugin ) free( psz_plugin );
 411     if( p_vout->p_module == NULL )
 412     {
 413         msg_Err( p_vout, "no suitable vout module" );
 414         vlc_object_detach( p_vout );
 415         vlc_object_destroy( p_vout );
 416         return NULL;
 417     }
 418
 419     /* Create a few object variables for interface interaction */
 420     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
 421     text.psz_string = _("Deinterlace");
 422     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
 423     val.psz_string = ""; text.psz_string = _("Disable");
 424     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 425     val.psz_string = "discard"; text.psz_string = _("Discard");
 426     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 427     val.psz_string = "blend"; text.psz_string = _("Blend");
 428     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 429     val.psz_string = "mean"; text.psz_string = _("Mean");
 430     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 431     val.psz_string = "bob"; text.psz_string = _("Bob");
 432     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 433     val.psz_string = "linear"; text.psz_string = _("Linear");
 434     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 435     val.psz_string = "x"; text.psz_string = "X";
 436     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 437
 438     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 439     {
 440         var_Set( p_vout, "deinterlace", val );
 441         if( val.psz_string ) free( val.psz_string );
 442     }
 443     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 444
 445
 446     var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 447     text.psz_string = _("Filters");
 448     var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
 449     var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
 450
 451     /* Calculate delay created by internal caching */
 452     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 453                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 454     if( p_input_thread )
 455     {
 456         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 457         vlc_object_release( p_input_thread );
 458     }
 459     else
 460     {
 461         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 462     }
 463
 464     if( vlc_thread_create( p_vout, "video output", RunThread,
 465                            VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) )
 466     {
 467         msg_Err( p_vout, "out of memory" );
 468         module_Unneed( p_vout, p_vout->p_module );
 469         vlc_object_detach( p_vout );
 470         vlc_object_destroy( p_vout );
 471         return NULL;
 472     }
 473
 474     if( p_vout->b_error )
 475     {
 476         msg_Err( p_vout, "video output creation failed" );
 477
 478         /* Make sure the thread is destroyed */
 479         p_vout->b_die = VLC_TRUE;
 480
 481         vlc_thread_join( p_vout );
 482
 483         vlc_object_detach( p_vout );
 484         vlc_object_destroy( p_vout );
 485         return NULL;
 486     }
 487
 488     return p_vout;
 489 }
 490
 491 /*****************************************************************************
 492  * vout_Destroy: destroys a previously created video output
 493  *****************************************************************************
 494  * Destroy a terminated thread.
 495  * The function will request a destruction of the specified thread. If pi_error
 496  * is NULL, it will return once the thread is destroyed. Else, it will be
 497  * update using one of the THREAD_* constants.
 498  *****************************************************************************/
 499 void vout_Destroy( vout_thread_t *p_vout )
 500 {
 501     vlc_object_t *p_playlist;
 502
 503     /* Request thread destruction */
 504     p_vout->b_die = VLC_TRUE;
 505     vlc_thread_join( p_vout );
 506
 507     var_Destroy( p_vout, "intf-change" );
 508
 509     p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
 510                                   FIND_ANYWHERE );
 511
 512     if( p_vout->psz_filter_chain ) free( p_vout->psz_filter_chain );
 513
 514     /* Free structure */
 515     vlc_object_destroy( p_vout );
 516
 517     /* If it was the last vout, tell the interface to show up */
 518     if( p_playlist != NULL )
 519     {
 520         vout_thread_t *p_another_vout = vlc_object_find( p_playlist,
 521                                             VLC_OBJECT_VOUT, FIND_ANYWHERE );
 522         if( p_another_vout == NULL )
 523         {
 524             vlc_value_t val;
 525             val.b_bool = VLC_TRUE;
 526             var_Set( p_playlist, "intf-show", val );
 527         }
 528         else
 529         {
 530             vlc_object_release( p_another_vout );
 531         }
 532         vlc_object_release( p_playlist );
 533     }
 534 }
 535
 536 /*****************************************************************************
 537  * InitThread: initialize video output thread
 538  *****************************************************************************
 539  * This function is called from RunThread and performs the second step of the
 540  * initialization. It returns 0 on success. Note that the thread's flag are not
 541  * modified inside this function.
 542  *****************************************************************************/
 543 static int InitThread( vout_thread_t *p_vout )
 544 {
 545     int i, i_aspect_x, i_aspect_y;
 546
 547     vlc_mutex_lock( &p_vout->change_lock );
 548
 549 #ifdef STATS
 550     p_vout->c_loops = 0;
 551 #endif
 552
 553     /* Initialize output method, it allocates direct buffers for us */
 554     if( p_vout->pf_init( p_vout ) )
 555     {
 556         vlc_mutex_unlock( &p_vout->change_lock );
 557         return VLC_EGENERIC;
 558     }
 559
 560     if( !I_OUTPUTPICTURES )
 561     {
 562         msg_Err( p_vout, "plugin was unable to allocate at least "
 563                          "one direct buffer" );
 564         p_vout->pf_end( p_vout );
 565         vlc_mutex_unlock( &p_vout->change_lock );
 566         return VLC_EGENERIC;
 567     }
 568
 569     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 570     {
 571         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 572                          "our internal buffers must have overflown." );
 573         p_vout->pf_end( p_vout );
 574         vlc_mutex_unlock( &p_vout->change_lock );
 575         return VLC_EGENERIC;
 576     }
 577
 578     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 579
 580     AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );
 581
 582     msg_Dbg( p_vout, "picture in %ix%i (%i,%i,%ix%i), "
 583              "chroma %4.4s, ar %i:%i, sar %i:%i",
 584              p_vout->fmt_render.i_width, p_vout->fmt_render.i_height,
 585              p_vout->fmt_render.i_x_offset, p_vout->fmt_render.i_y_offset,
 586              p_vout->fmt_render.i_visible_width,
 587              p_vout->fmt_render.i_visible_height,
 588              (char*)&p_vout->fmt_render.i_chroma,
 589              i_aspect_x, i_aspect_y,
 590              p_vout->fmt_render.i_sar_num, p_vout->fmt_render.i_sar_den );
 591
 592     AspectRatio( p_vout->fmt_in.i_aspect, &i_aspect_x, &i_aspect_y );
 593
 594     msg_Dbg( p_vout, "picture user %ix%i (%i,%i,%ix%i), "
 595              "chroma %4.4s, ar %i:%i, sar %i:%i",
 596              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 597              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 598              p_vout->fmt_in.i_visible_width,
 599              p_vout->fmt_in.i_visible_height,
 600              (char*)&p_vout->fmt_in.i_chroma,
 601              i_aspect_x, i_aspect_y,
 602              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 603
 604     if( !p_vout->fmt_out.i_width || !p_vout->fmt_out.i_height )
 605     {
 606         p_vout->fmt_out.i_width = p_vout->fmt_out.i_visible_width =
 607             p_vout->output.i_width;
 608         p_vout->fmt_out.i_height = p_vout->fmt_out.i_visible_height =
 609             p_vout->output.i_height;
 610         p_vout->fmt_out.i_x_offset =  p_vout->fmt_out.i_y_offset = 0;
 611
 612         p_vout->fmt_out.i_aspect = p_vout->output.i_aspect;
 613         p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 614     }
 615     if( !p_vout->fmt_out.i_sar_num || !p_vout->fmt_out.i_sar_num )
 616     {
 617         p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_aspect *
 618             p_vout->fmt_out.i_height;
 619         p_vout->fmt_out.i_sar_den = VOUT_ASPECT_FACTOR *
 620             p_vout->fmt_out.i_width;
 621     }
 622
 623     vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
 624                  p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
 625
 626     AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
 627
 628     msg_Dbg( p_vout, "picture out %ix%i (%i,%i,%ix%i), "
 629              "chroma %4.4s, ar %i:%i, sar %i:%i",
 630              p_vout->fmt_out.i_width, p_vout->fmt_out.i_height,
 631              p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
 632              p_vout->fmt_out.i_visible_width,
 633              p_vout->fmt_out.i_visible_height,
 634              (char*)&p_vout->fmt_out.i_chroma,
 635              i_aspect_x, i_aspect_y,
 636              p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den );
 637
 638     /* Calculate shifts from system-updated masks */
 639     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 640                  p_vout->output.i_rmask );
 641     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 642                  p_vout->output.i_gmask );
 643     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 644                  p_vout->output.i_bmask );
 645
 646     /* Check whether we managed to create direct buffers similar to
 647      * the render buffers, ie same size and chroma */
 648     if( ( p_vout->output.i_width == p_vout->render.i_width )
 649      && ( p_vout->output.i_height == p_vout->render.i_height )
 650      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 651     {
 652         /* Cool ! We have direct buffers, we can ask the decoder to
 653          * directly decode into them ! Map the first render buffers to
 654          * the first direct buffers, but keep the first direct buffer
 655          * for memcpy operations */
 656         p_vout->b_direct = 1;
 657
 658         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 659         {
 660             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 661                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 662                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 663             {
 664                 /* We have enough direct buffers so there's no need to
 665                  * try to use system memory buffers. */
 666                 break;
 667             }
 668             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 669             I_RENDERPICTURES++;
 670         }
 671
 672         msg_Dbg( p_vout, "direct render, mapping "
 673                  "render pictures 0-%i to system pictures 1-%i",
 674                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 675     }
 676     else
 677     {
 678         /* Rats... Something is wrong here, we could not find an output
 679          * plugin able to directly render what we decode. See if we can
 680          * find a chroma plugin to do the conversion */
 681         p_vout->b_direct = 0;
 682
 683         /* Choose the best module */
 684         p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL, 0 );
 685
 686         if( p_vout->chroma.p_module == NULL )
 687         {
 688             msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
 689                      (char*)&p_vout->render.i_chroma,
 690                      (char*)&p_vout->output.i_chroma );
 691             p_vout->pf_end( p_vout );
 692             vlc_mutex_unlock( &p_vout->change_lock );
 693             return VLC_EGENERIC;
 694         }
 695
 696         msg_Dbg( p_vout, "indirect render, mapping "
 697                  "render pictures 0-%i to system pictures %i-%i",
 698                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 699                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 700
 701         /* Append render buffers after the direct buffers */
 702         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 703         {
 704             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 705             I_RENDERPICTURES++;
 706
 707             /* Check if we have enough render pictures */
 708             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 709                 break;
 710         }
 711     }
 712
 713     /* Link pictures back to their heap */
 714     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 715     {
 716         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 717     }
 718
 719     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 720     {
 721         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 722     }
 723
 724 /* XXX XXX mark thread ready */
 725     return VLC_SUCCESS;
 726 }
 727
 728 /*****************************************************************************
 729  * RunThread: video output thread
 730  *****************************************************************************
 731  * Video output thread. This function does only returns when the thread is
 732  * terminated. It handles the pictures arriving in the video heap and the
 733  * display device events.
 734  *****************************************************************************/
 735 static void RunThread( vout_thread_t *p_vout)
 736 {
 737     int             i_index;                                /* index in heap */
 738     int             i_idle_loops = 0;  /* loops without displaying a picture */
 739     mtime_t         current_date;                            /* current date */
 740     mtime_t         display_date;                            /* display date */
 741
 742     picture_t *     p_picture;                            /* picture pointer */
 743     picture_t *     p_last_picture = NULL;                   /* last picture */
 744     picture_t *     p_directbuffer;              /* direct buffer to display */
 745
 746     subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
 747
 748     input_thread_t *p_input = NULL ;           /* Parent input, if it exists */
 749
 750     vlc_value_t     val;
 751     vlc_bool_t      b_drop_late;
 752
 753     int             i_displayed = 0, i_lost = 0, i_loops = 0;
 754
 755     /*
 756      * Initialize thread
 757      */
 758     p_vout->b_error = InitThread( p_vout );
 759
 760     var_Create( p_vout, "drop-late-frames", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 761     var_Get( p_vout, "drop-late-frames", &val );
 762     b_drop_late = val.b_bool;
 763
 764     /* signal the creation of the vout */
 765     vlc_thread_ready( p_vout );
 766
 767     if( p_vout->b_error )
 768     {
 769         /* Destroy thread structures allocated by Create and InitThread */
 770         DestroyThread( p_vout );
 771         return;
 772     }
 773
 774     /*
 775      * Main loop - it is not executed if an error occurred during
 776      * initialization
 777      */
 778     while( (!p_vout->b_die) && (!p_vout->b_error) )
 779     {
 780         /* Initialize loop variables */
 781         p_picture = NULL;
 782         display_date = 0;
 783         current_date = mdate();
 784
 785         if( p_input && p_input->b_die )
 786         {
 787             vlc_object_release( p_input );
 788             p_input = NULL;
 789         }
 790
 791         i_loops++;
 792         if( i_loops % 20 == 0 )
 793         {
 794             if( !p_input )
 795             {
 796                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 797                                            FIND_PARENT );
 798             }
 799             if( p_input )
 800             {
 801                 vlc_mutex_lock( &p_input->counters.counters_lock );
 802                 stats_UpdateInteger( p_vout, p_input->counters.p_lost_pictures,
 803                                      i_lost , NULL);
 804                 stats_UpdateInteger( p_vout,
 805                                      p_input->counters.p_displayed_pictures,
 806                                      i_displayed , NULL);
 807                 i_displayed = i_lost = 0;
 808                 vlc_mutex_unlock( &p_input->counters.counters_lock );
 809             }
 810         }
 811 #if 0
 812         p_vout->c_loops++;
 813         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 814         {
 815             msg_Dbg( p_vout, "picture heap: %d/%d",
 816                      I_RENDERPICTURES, p_vout->i_heap_size );
 817         }
 818 #endif
 819
 820         /*
 821          * Find the picture to display (the one with the earliest date).
 822          * This operation does not need lock, since only READY_PICTUREs
 823          * are handled. */
 824         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 825         {
 826             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 827                 && ( (p_picture == NULL) ||
 828                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 829             {
 830                 p_picture = PP_RENDERPICTURE[i_index];
 831                 display_date = p_picture->date;
 832             }
 833         }
 834
 835         if( p_picture )
 836         {
 837             /* If we met the last picture, parse again to see whether there is
 838              * a more appropriate one. */
 839             if( p_picture == p_last_picture )
 840             {
 841                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 842                 {
 843                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 844                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 845                         && ((p_picture == p_last_picture) ||
 846                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 847                     {
 848                         p_picture = PP_RENDERPICTURE[i_index];
 849                         display_date = p_picture->date;
 850                     }
 851                 }
 852             }
 853
 854             /* If we found better than the last picture, destroy it */
 855             if( p_last_picture && p_picture != p_last_picture )
 856             {
 857                 vlc_mutex_lock( &p_vout->picture_lock );
 858                 if( p_last_picture->i_refcount )
 859                 {
 860                     p_last_picture->i_status = DISPLAYED_PICTURE;
 861                 }
 862                 else
 863                 {
 864                     p_last_picture->i_status = DESTROYED_PICTURE;
 865                     p_vout->i_heap_size--;
 866                 }
 867                 vlc_mutex_unlock( &p_vout->picture_lock );
 868                 p_last_picture = NULL;
 869             }
 870
 871             /* Compute FPS rate */
 872             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 873                 = display_date;
 874
 875             if( !p_picture->b_force &&
 876                 p_picture != p_last_picture &&
 877                 display_date < current_date + p_vout->render_time &&
 878                 b_drop_late )
 879             {
 880                 /* Picture is late: it will be destroyed and the thread
 881                  * will directly choose the next picture */
 882                 vlc_mutex_lock( &p_vout->picture_lock );
 883                 if( p_picture->i_refcount )
 884                 {
 885                     /* Pretend we displayed the picture, but don't destroy
 886                      * it since the decoder might still need it. */
 887                     p_picture->i_status = DISPLAYED_PICTURE;
 888                 }
 889                 else
 890                 {
 891                     /* Destroy the picture without displaying it */
 892                     p_picture->i_status = DESTROYED_PICTURE;
 893                     p_vout->i_heap_size--;
 894                 }
 895                 msg_Warn( p_vout, "late picture skipped ("I64Fd")",
 896                                   current_date - display_date );
 897                 i_lost++;
 898                 vlc_mutex_unlock( &p_vout->picture_lock );
 899
 900                 continue;
 901             }
 902
 903             if( display_date >
 904                 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
 905             {
 906                 /* Picture is waaay too early: it will be destroyed */
 907                 vlc_mutex_lock( &p_vout->picture_lock );
 908                 if( p_picture->i_refcount )
 909                 {
 910                     /* Pretend we displayed the picture, but don't destroy
 911                      * it since the decoder might still need it. */
 912                     p_picture->i_status = DISPLAYED_PICTURE;
 913                 }
 914                 else
 915                 {
 916                     /* Destroy the picture without displaying it */
 917                     p_picture->i_status = DESTROYED_PICTURE;
 918                     p_vout->i_heap_size--;
 919                 }
 920                 i_lost++;
 921                 msg_Warn( p_vout, "vout warning: early picture skipped "
 922                           "("I64Fd")", display_date - current_date
 923                           - p_vout->i_pts_delay );
 924                 vlc_mutex_unlock( &p_vout->picture_lock );
 925
 926                 continue;
 927             }
 928
 929             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 930             {
 931                 /* A picture is ready to be rendered, but its rendering date
 932                  * is far from the current one so the thread will perform an
 933                  * empty loop as if no picture were found. The picture state
 934                  * is unchanged */
 935                 p_picture    = NULL;
 936                 display_date = 0;
 937             }
 938             else if( p_picture == p_last_picture )
 939             {
 940                 /* We are asked to repeat the previous picture, but we first
 941                  * wait for a couple of idle loops */
 942                 if( i_idle_loops < 4 )
 943                 {
 944                     p_picture    = NULL;
 945                     display_date = 0;
 946                 }
 947                 else
 948                 {
 949                     /* We set the display date to something high, otherwise
 950                      * we'll have lots of problems with late pictures */
 951                     display_date = current_date + p_vout->render_time;
 952                 }
 953             }
 954         }
 955
 956         if( p_picture == NULL )
 957         {
 958             i_idle_loops++;
 959         }
 960
 961         /* Video Filter2 stuff */
 962         if( p_vout->b_vfilter_change == VLC_TRUE )
 963         {
 964             int i;
 965             RemoveVideoFilters2( p_vout );
 966             for( i = 0; i < p_vout->i_vfilters_cfg; i++ )
 967             {
 968                 filter_t *p_vfilter =
 969                     p_vout->pp_vfilters[p_vout->i_vfilters] =
 970                         vlc_object_create( p_vout, VLC_OBJECT_FILTER );
 971
 972                 vlc_object_attach( p_vfilter, p_vout );
 973
 974                 p_vfilter->pf_vout_buffer_new = video_new_buffer_filter;
 975                 p_vfilter->pf_vout_buffer_del = video_del_buffer_filter;
 976
 977                 if( !p_vout->i_vfilters )
 978                 {
 979                     p_vfilter->fmt_in.video = p_vout->fmt_render;
 980                 }
 981                 else
 982                 {
 983                     p_vfilter->fmt_in.video = (p_vfilter-1)->fmt_out.video;
 984                 }
 985                 /* TODO: one day filters in the middle of the chain might
 986                  * have a different fmt_out.video than fmt_render ... */
 987                 p_vfilter->fmt_out.video = p_vout->fmt_render;
 988
 989                 p_vfilter->p_cfg = p_vout->p_vfilters_cfg[i];
 990                 p_vfilter->p_module = module_Need( p_vfilter, "video filter2",
 991                                                  p_vout->psz_vfilters[i], 0 );
 992
 993                 if( p_vfilter->p_module )
 994                 {
 995                     p_vfilter->p_owner =
 996                         malloc( sizeof( filter_owner_sys_t ) );
 997                     p_vfilter->p_owner->p_vout = p_vout;
 998                     p_vout->i_vfilters++;
 999                     msg_Dbg( p_vout, "video filter found (%s)",
1000                              p_vout->psz_vfilters[i] );
1001                 }
1002                 else
1003                 {
1004                     msg_Err( p_vout, "no video filter found (%s)",
1005                              p_vout->psz_vfilters[i] );
1006                     vlc_object_detach( p_vfilter );
1007                     vlc_object_destroy( p_vfilter );
1008                 }
1009             }
1010             p_vout->b_vfilter_change = VLC_FALSE;
1011         }
1012
1013         if( p_picture )
1014         {
1015             int i;
1016             for( i = 0; i < p_vout->i_vfilters; i++ )
1017             {
1018                 picture_t *p_old = p_picture;
1019                 p_picture  = p_vout->pp_vfilters[i]->pf_video_filter(
1020                                  p_vout->pp_vfilters[i], p_picture );
1021                 if( !p_picture )
1022                 {
1023                     break;
1024                 }
1025                 /* FIXME: this is kind of wrong
1026                  * if you have 2 or more vfilters and the 2nd breaks,
1027                  * on the next loop the 1st one will be applied again */
1028
1029                 /* if p_old and p_picture are the same (ie the filter
1030                  * worked on the old picture), then following code is
1031                  * still alright since i_status gets changed back to
1032                  * the right value */
1033                 if( p_old->i_refcount )
1034                 {
1035                     p_old->i_status = DISPLAYED_PICTURE;
1036                 }
1037                 else
1038                 {
1039                     p_old->i_status = DESTROYED_PICTURE;
1040                 }
1041                 p_picture->i_status = READY_PICTURE;
1042             }
1043         }
1044
1045         if( p_picture && p_vout->b_snapshot )
1046         {
1047             p_vout->b_snapshot = VLC_FALSE;
1048             vout_Snapshot( p_vout, p_picture );
1049         }
1050
1051         /*
1052          * Check for subpictures to display
1053          */
1054         if( display_date > 0 )
1055         {
1056             if( !p_input )
1057             {
1058                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
1059                                            FIND_PARENT );
1060             }
1061             p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date,
1062             p_input ? var_GetBool( p_input, "state" ) == PAUSE_S : VLC_FALSE );
1063         }
1064
1065         /*
1066          * Perform rendering
1067          */
1068         i_displayed++;
1069         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
1070
1071         /*
1072          * Call the plugin-specific rendering method if there is one
1073          */
1074         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
1075         {
1076             /* Render the direct buffer returned by vout_RenderPicture */
1077             p_vout->pf_render( p_vout, p_directbuffer );
1078         }
1079
1080         /*
1081          * Sleep, wake up
1082          */
1083         if( display_date != 0 && p_directbuffer != NULL )
1084         {
1085             mtime_t current_render_time = mdate() - current_date;
1086             /* if render time is very large we don't include it in the mean */
1087             if( current_render_time < p_vout->render_time +
1088                 VOUT_DISPLAY_DELAY )
1089             {
1090                 /* Store render time using a sliding mean weighting to
1091                  * current value in a 3 to 1 ratio*/
1092                 p_vout->render_time *= 3;
1093                 p_vout->render_time += current_render_time;
1094                 p_vout->render_time >>= 2;
1095             }
1096         }
1097
1098         /* Give back change lock */
1099         vlc_mutex_unlock( &p_vout->change_lock );
1100
1101         /* Sleep a while or until a given date */
1102         if( display_date != 0 )
1103         {
1104             /* If there are filters in the chain, better give them the picture
1105              * in advance */
1106             if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
1107             {
1108                 mwait( display_date - VOUT_MWAIT_TOLERANCE );
1109             }
1110         }
1111         else
1112         {
1113             msleep( VOUT_IDLE_SLEEP );
1114         }
1115
1116         /* On awakening, take back lock and send immediately picture
1117          * to display. */
1118         vlc_mutex_lock( &p_vout->change_lock );
1119
1120         /*
1121          * Display the previously rendered picture
1122          */
1123         if( p_picture != NULL && p_directbuffer != NULL )
1124         {
1125             /* Display the direct buffer returned by vout_RenderPicture */
1126             if( p_vout->pf_display )
1127             {
1128                 p_vout->pf_display( p_vout, p_directbuffer );
1129             }
1130
1131             /* Tell the vout this was the last picture and that it does not
1132              * need to be forced anymore. */
1133             p_last_picture = p_picture;
1134             p_last_picture->b_force = 0;
1135         }
1136
1137         if( p_picture != NULL )
1138         {
1139             /* Reinitialize idle loop count */
1140             i_idle_loops = 0;
1141         }
1142
1143         /*
1144          * Check events and manage thread
1145          */
1146         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
1147         {
1148             /* A fatal error occurred, and the thread must terminate
1149              * immediately, without displaying anything - setting b_error to 1
1150              * causes the immediate end of the main while() loop. */
1151             p_vout->b_error = 1;
1152         }
1153
1154         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
1155         {
1156             /* this must only happen when the vout plugin is incapable of
1157              * rescaling the picture itself. In this case we need to destroy
1158              * the current picture buffers and recreate new ones with the right
1159              * dimensions */
1160             int i;
1161
1162             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
1163
1164             p_vout->pf_end( p_vout );
1165             for( i = 0; i < I_OUTPUTPICTURES; i++ )
1166                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
1167
1168             I_OUTPUTPICTURES = 0;
1169             if( p_vout->pf_init( p_vout ) )
1170             {
1171                 msg_Err( p_vout, "cannot resize display" );
1172                 /* FIXME: pf_end will be called again in EndThread() */
1173                 p_vout->b_error = 1;
1174             }
1175
1176             /* Need to reinitialise the chroma plugin */
1177             if( p_vout->chroma.p_module )
1178             {
1179                 if( p_vout->chroma.p_module->pf_deactivate )
1180                     p_vout->chroma.p_module->pf_deactivate( VLC_OBJECT(p_vout) );
1181                 p_vout->chroma.p_module->pf_activate( VLC_OBJECT(p_vout) );
1182             }
1183         }
1184
1185         if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1186         {
1187             /* This happens when the picture buffers need to be recreated.
1188              * This is useful on multimonitor displays for instance.
1189              *
1190              * Warning: This only works when the vout creates only 1 picture
1191              * buffer!! */
1192             p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1193
1194             if( !p_vout->b_direct )
1195             {
1196                 module_Unneed( p_vout, p_vout->chroma.p_module );
1197             }
1198
1199             vlc_mutex_lock( &p_vout->picture_lock );
1200
1201             p_vout->pf_end( p_vout );
1202
1203             I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1204
1205             p_vout->b_error = InitThread( p_vout );
1206
1207             vlc_mutex_unlock( &p_vout->picture_lock );
1208         }
1209     }
1210
1211     if( p_input )
1212     {
1213         vlc_object_release( p_input );
1214     }
1215
1216     /*
1217      * Error loop - wait until the thread destruction is requested
1218      */
1219     if( p_vout->b_error )
1220     {
1221         ErrorThread( p_vout );
1222     }
1223
1224     /* End of thread */
1225     EndThread( p_vout );
1226
1227     /* Destroy thread structures allocated by CreateThread */
1228     DestroyThread( p_vout );
1229 }
1230
1231 /*****************************************************************************
1232  * ErrorThread: RunThread() error loop
1233  *****************************************************************************
1234  * This function is called when an error occurred during thread main's loop.
1235  * The thread can still receive feed, but must be ready to terminate as soon
1236  * as possible.
1237  *****************************************************************************/
1238 static void ErrorThread( vout_thread_t *p_vout )
1239 {
1240     /* Wait until a `die' order */
1241     while( !p_vout->b_die )
1242     {
1243         /* Sleep a while */
1244         msleep( VOUT_IDLE_SLEEP );
1245     }
1246 }
1247
1248 /*****************************************************************************
1249  * EndThread: thread destruction
1250  *****************************************************************************
1251  * This function is called when the thread ends after a sucessful
1252  * initialization. It frees all resources allocated by InitThread.
1253  *****************************************************************************/
1254 static void EndThread( vout_thread_t *p_vout )
1255 {
1256     int     i_index;                                        /* index in heap */
1257
1258 #ifdef STATS
1259     {
1260         struct tms cpu_usage;
1261         times( &cpu_usage );
1262
1263         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1264                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1265     }
1266 #endif
1267
1268     if( !p_vout->b_direct )
1269     {
1270         module_Unneed( p_vout, p_vout->chroma.p_module );
1271     }
1272
1273     /* Destroy all remaining pictures */
1274     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1275     {
1276         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1277         {
1278             free( p_vout->p_picture[i_index].p_data_orig );
1279         }
1280     }
1281
1282     /* Destroy subpicture unit */
1283     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), VLC_FALSE );
1284     spu_Destroy( p_vout->p_spu );
1285
1286     /* Destroy the video filters2 */
1287     RemoveVideoFilters2( p_vout );
1288
1289     /* Destroy translation tables */
1290     p_vout->pf_end( p_vout );
1291
1292     /* Release the change lock */
1293     vlc_mutex_unlock( &p_vout->change_lock );
1294 }
1295
1296 /*****************************************************************************
1297  * DestroyThread: thread destruction
1298  *****************************************************************************
1299  * This function is called when the thread ends. It frees all ressources
1300  * allocated by CreateThread. Status is available at this stage.
1301  *****************************************************************************/
1302 static void DestroyThread( vout_thread_t *p_vout )
1303 {
1304     /* Destroy the locks */
1305     vlc_mutex_destroy( &p_vout->picture_lock );
1306     vlc_mutex_destroy( &p_vout->change_lock );
1307
1308     /* Release the module */
1309     if( p_vout && p_vout->p_module )
1310     {
1311         module_Unneed( p_vout, p_vout->p_module );
1312     }
1313 }
1314
1315 /* following functions are local */
1316
1317 static int ReduceHeight( int i_ratio )
1318 {
1319     int i_dummy = VOUT_ASPECT_FACTOR;
1320     int i_pgcd  = 1;
1321
1322     if( !i_ratio )
1323     {
1324         return i_pgcd;
1325     }
1326
1327     /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1328     while( !(i_ratio & 1) && !(i_dummy & 1) )
1329     {
1330         i_ratio >>= 1;
1331         i_dummy >>= 1;
1332         i_pgcd  <<= 1;
1333     }
1334
1335     while( !(i_ratio % 3) && !(i_dummy % 3) )
1336     {
1337         i_ratio /= 3;
1338         i_dummy /= 3;
1339         i_pgcd  *= 3;
1340     }
1341
1342     while( !(i_ratio % 5) && !(i_dummy % 5) )
1343     {
1344         i_ratio /= 5;
1345         i_dummy /= 5;
1346         i_pgcd  *= 5;
1347     }
1348
1349     return i_pgcd;
1350 }
1351
1352 static void AspectRatio( int i_aspect, int *i_aspect_x, int *i_aspect_y )
1353 {
1354     unsigned int i_pgcd = ReduceHeight( i_aspect );
1355     *i_aspect_x = i_aspect / i_pgcd;
1356     *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
1357 }
1358
1359 /*****************************************************************************
1360  * BinaryLog: computes the base 2 log of a binary value
1361  *****************************************************************************
1362  * This functions is used by MaskToShift, to get a bit index from a binary
1363  * value.
1364  *****************************************************************************/
1365 static int BinaryLog( uint32_t i )
1366 {
1367     int i_log = 0;
1368
1369     if( i == 0 ) return -31337;
1370
1371     if( i & 0xffff0000 ) i_log += 16;
1372     if( i & 0xff00ff00 ) i_log += 8;
1373     if( i & 0xf0f0f0f0 ) i_log += 4;
1374     if( i & 0xcccccccc ) i_log += 2;
1375     if( i & 0xaaaaaaaa ) i_log += 1;
1376
1377     return i_log;
1378 }
1379
1380 /*****************************************************************************
1381  * MaskToShift: transform a color mask into right and left shifts
1382  *****************************************************************************
1383  * This function is used for obtaining color shifts from masks.
1384  *****************************************************************************/
1385 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1386 {
1387     uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
1388
1389     if( !i_mask )
1390     {
1391         *pi_left = *pi_right = 0;
1392         return;
1393     }
1394
1395     /* Get bits */
1396     i_low = i_high = i_mask;
1397
1398     i_low &= - (int32_t)i_low;          /* lower bit of the mask */
1399     i_high += i_low;                    /* higher bit of the mask */
1400
1401     /* Transform bits into an index. Also deal with i_high overflow, which
1402      * is faster than changing the BinaryLog code to handle 64 bit integers. */
1403     i_low =  BinaryLog (i_low);
1404     i_high = i_high ? BinaryLog (i_high) : 32;
1405
1406     /* Update pointers and return */
1407     *pi_left =   i_low;
1408     *pi_right = (8 - i_high + i_low);
1409 }
1410
1411 /*****************************************************************************
1412  * vout_VarCallback: generic callback for intf variables
1413  *****************************************************************************/
1414 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1415                       vlc_value_t old_value, vlc_value_t new_value,
1416                       void * unused )
1417 {
1418     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1419     vlc_value_t val;
1420     val.b_bool = VLC_TRUE;
1421     var_Set( p_vout, "intf-change", val );
1422     return VLC_SUCCESS;
1423 }
1424
1425 /*****************************************************************************
1426  * Helper thread for object variables callbacks.
1427  * Only used to avoid deadlocks when using the video embedded mode.
1428  *****************************************************************************/
1429 typedef struct suxor_thread_t
1430 {
1431     VLC_COMMON_MEMBERS
1432     input_thread_t *p_input;
1433
1434 } suxor_thread_t;
1435
1436 static void SuxorRestartVideoES( suxor_thread_t *p_this )
1437 {
1438     vlc_value_t val;
1439
1440     vlc_thread_ready( p_this );
1441
1442     /* Now restart current video stream */
1443     var_Get( p_this->p_input, "video-es", &val );
1444     if( val.i_int >= 0 )
1445     {
1446         vlc_value_t val_es;
1447         val_es.i_int = -VIDEO_ES;
1448         var_Set( p_this->p_input, "video-es", val_es );
1449         var_Set( p_this->p_input, "video-es", val );
1450     }
1451
1452     vlc_object_release( p_this->p_input );
1453
1454 #ifdef WIN32
1455     CloseHandle( p_this->thread_id );
1456 #endif
1457
1458     vlc_object_destroy( p_this );
1459 }
1460
1461 /*****************************************************************************
1462  * object variables callbacks: a bunch of object variables are used by the
1463  * interfaces to interact with the vout.
1464  *****************************************************************************/
1465 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1466                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1467 {
1468     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1469     input_thread_t *p_input;
1470     vlc_value_t val;
1471
1472     char *psz_mode = newval.psz_string;
1473     char *psz_filter, *psz_deinterlace = NULL;
1474
1475     var_Get( p_vout, "vout-filter", &val );
1476     psz_filter = val.psz_string;
1477     if( psz_filter ) psz_deinterlace = strstr( psz_filter, "deinterlace" );
1478
1479     if( !psz_mode || !*psz_mode )
1480     {
1481         if( psz_deinterlace )
1482         {
1483             char *psz_src = psz_deinterlace + sizeof("deinterlace") - 1;
1484             if( psz_src[0] == ':' ) psz_src++;
1485             memmove( psz_deinterlace, psz_src, strlen(psz_src) + 1 );
1486         }
1487     }
1488     else if( !psz_deinterlace )
1489     {
1490         psz_filter = realloc( psz_filter, strlen( psz_filter ) +
1491                               sizeof(":deinterlace") );
1492         if( psz_filter && *psz_filter ) strcat( psz_filter, ":" );
1493         strcat( psz_filter, "deinterlace" );
1494     }
1495
1496     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1497                                                  FIND_PARENT );
1498     if( !p_input ) return VLC_EGENERIC;
1499
1500     if( psz_mode && *psz_mode )
1501     {
1502         /* Modify input as well because the vout might have to be restarted */
1503         val.psz_string = psz_mode;
1504         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1505         var_Set( p_input, "deinterlace-mode", val );
1506     }
1507     vlc_object_release( p_input );
1508
1509     val.b_bool = VLC_TRUE;
1510     var_Set( p_vout, "intf-change", val );
1511
1512     val.psz_string = psz_filter;
1513     var_Set( p_vout, "vout-filter", val );
1514     if( psz_filter ) free( psz_filter );
1515
1516     return VLC_SUCCESS;
1517 }
1518
1519 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1520                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1521 {
1522     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1523     input_thread_t *p_input;
1524     vlc_value_t val;
1525
1526     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1527                                                  FIND_PARENT );
1528     if (!p_input)
1529     {
1530         msg_Err( p_vout, "Input not found" );
1531         return( VLC_EGENERIC );
1532     }
1533
1534     val.b_bool = VLC_TRUE;
1535     var_Set( p_vout, "intf-change", val );
1536
1537     /* Modify input as well because the vout might have to be restarted */
1538     val.psz_string = newval.psz_string;
1539     var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1540
1541     var_Set( p_input, "vout-filter", val );
1542
1543     /* Now restart current video stream */
1544     var_Get( p_input, "video-es", &val );
1545     if( val.i_int >= 0 )
1546     {
1547         suxor_thread_t *p_suxor =
1548             vlc_object_create( p_vout, sizeof(suxor_thread_t) );
1549         p_suxor->p_input = p_input;
1550         p_vout->b_filter_change = VLC_TRUE;
1551         vlc_object_yield( p_input );
1552         vlc_thread_create( p_suxor, "suxor", SuxorRestartVideoES,
1553                            VLC_THREAD_PRIORITY_LOW, VLC_FALSE );
1554     }
1555
1556     vlc_object_release( p_input );
1557
1558     return VLC_SUCCESS;
1559 }
1560
1561 /*****************************************************************************
1562  * Video Filter2 stuff
1563  *****************************************************************************/
1564 static int ParseVideoFilter2Chain( vout_thread_t *p_vout, char *psz_vfilters )
1565 {
1566     int i;
1567     for( i = 0; i < p_vout->i_vfilters_cfg; i++ )
1568     {
1569         /* FIXME: this should be moved in a separate function */
1570         struct sout_cfg_t *p_cfg =
1571             p_vout->p_vfilters_cfg[p_vout->i_vfilters_cfg];
1572         while( p_cfg )
1573         {
1574             struct sout_cfg_t *p_next = p_cfg->p_next;
1575             free( p_cfg->psz_name );
1576             free( p_cfg->psz_value );
1577             free( p_cfg );
1578             p_cfg = p_next;
1579         }
1580         /* </FIXME> */
1581
1582         free( p_vout->psz_vfilters[p_vout->i_vfilters_cfg] );
1583     }
1584     p_vout->i_vfilters_cfg = 0;
1585     if( psz_vfilters && *psz_vfilters )
1586     {
1587         char *psz_parser = psz_vfilters;
1588
1589         while( psz_parser && *psz_parser )
1590         {
1591             psz_parser = sout_CfgCreate(
1592                             &p_vout->psz_vfilters[p_vout->i_vfilters_cfg],
1593                             &p_vout->p_vfilters_cfg[p_vout->i_vfilters_cfg],
1594                             psz_parser );
1595             msg_Dbg( p_vout, "adding vfilter: %s\n",
1596                      p_vout->psz_vfilters[p_vout->i_vfilters_cfg] );
1597             p_vout->i_vfilters_cfg++;
1598             if( psz_parser && psz_parser )
1599             {
1600                 if( p_vout->i_vfilters_cfg == MAX_VFILTERS )
1601                 {
1602                     msg_Warn( p_vout,
1603                   "maximum number of video filters reached. \"%s\" discarded",
1604                               psz_parser );
1605                     break;
1606                 }
1607             }
1608         }
1609     }
1610     return VLC_SUCCESS;
1611 }
1612
1613 static int VideoFilter2Callback( vlc_object_t *p_this, char const *psz_cmd,
1614                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1615 {
1616     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1617
1618     ParseVideoFilter2Chain( p_vout, newval.psz_string );
1619     p_vout->b_vfilter_change = VLC_TRUE;
1620
1621     return VLC_SUCCESS;
1622 }
1623
1624 static void RemoveVideoFilters2( vout_thread_t *p_vout )
1625 {
1626     int i;
1627     for( i = 0; i < p_vout->i_vfilters; i++ )
1628     {
1629         vlc_object_detach( p_vout->pp_vfilters[i] );
1630         if( p_vout->pp_vfilters[i]->p_module )
1631         {
1632             module_Unneed( p_vout->pp_vfilters[i],
1633                            p_vout->pp_vfilters[i]->p_module );
1634         }
1635
1636         free( p_vout->pp_vfilters[i]->p_owner );
1637         vlc_object_destroy( p_vout->pp_vfilters[i] );
1638     }
1639     p_vout->i_vfilters = 0;
1640 }