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) 2000-2007 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 #ifdef HAVE_CONFIG_H
  33 # include "config.h"
  34 #endif
  35
  36 #include <vlc/vlc.h>
  37
  38 #include <stdlib.h>                                                /* free() */
  39 #include <string.h>
  40
  41
  42 #ifdef HAVE_SYS_TIMES_H
  43 #   include <sys/times.h>
  44 #endif
  45
  46 #include <vlc_vout.h>
  47 #include <vlc_playlist.h>
  48
  49 #include <vlc_filter.h>
  50 #include <vlc_osd.h>
  51
  52 #if defined( __APPLE__ )
  53 /* Include darwin_specific.h here if needed */
  54 #endif
  55
  56 /** FIXME This is quite ugly but needed while we don't have counters
  57  * helpers */
  58 #include "input/input_internal.h"
  59
  60 #include "modules/modules.h"
  61
  62 /*****************************************************************************
  63  * Local prototypes
  64  *****************************************************************************/
  65 static int      InitThread        ( vout_thread_t * );
  66 static void     RunThread         ( vout_thread_t * );
  67 static void     ErrorThread       ( vout_thread_t * );
  68 static void     EndThread         ( vout_thread_t * );
  69
  70 static void     AspectRatio       ( int, int *, int * );
  71 static int      BinaryLog         ( uint32_t );
  72 static void     MaskToShift       ( int *, int *, uint32_t );
  73
  74 static void     vout_Destructor   ( vlc_object_t * p_this );
  75
  76 /* Object variables callbacks */
  77 static int DeinterlaceCallback( vlc_object_t *, char const *,
  78                                 vlc_value_t, vlc_value_t, void * );
  79 static int FilterCallback( vlc_object_t *, char const *,
  80                            vlc_value_t, vlc_value_t, void * );
  81 static int VideoFilter2Callback( vlc_object_t *, char const *,
  82                                  vlc_value_t, vlc_value_t, void * );
  83
  84 /* From vout_intf.c */
  85 int vout_Snapshot( vout_thread_t *, picture_t * );
  86
  87 /* Video filter2 parsing */
  88 static int ParseVideoFilter2Chain( vout_thread_t *, char * );
  89 static void RemoveVideoFilters2( vout_thread_t *p_vout );
  90
  91 /* Display media title in OSD */
  92 static void DisplayTitleOnOSD( vout_thread_t *p_vout );
  93
  94 /*****************************************************************************
  95  * Video Filter2 functions
  96  *****************************************************************************/
  97 struct filter_owner_sys_t
  98 {
  99     vout_thread_t *p_vout;
 100 };
 101
 102 static picture_t *video_new_buffer_filter( filter_t *p_filter )
 103 {
 104     picture_t *p_picture;
 105     vout_thread_t *p_vout = p_filter->p_owner->p_vout;
 106
 107     p_picture = vout_CreatePicture( p_vout, 0, 0, 0 );
 108
 109     return p_picture;
 110 }
 111
 112 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
 113 {
 114     vout_DestroyPicture( p_filter->p_owner->p_vout, p_pic );
 115 }
 116
 117 /*****************************************************************************
 118  * vout_Request: find a video output thread, create one, or destroy one.
 119  *****************************************************************************
 120  * This function looks for a video output thread matching the current
 121  * properties. If not found, it spawns a new one.
 122  *****************************************************************************/
 123 vout_thread_t *__vout_Request( vlc_object_t *p_this, vout_thread_t *p_vout,
 124                                video_format_t *p_fmt )
 125 {
 126     if( !p_fmt )
 127     {
 128         /* Reattach video output to playlist before bailing out */
 129         if( p_vout )
 130         {
 131             spu_Attach( p_vout->p_spu, p_this, false );
 132             vlc_object_detach( p_vout );
 133             vlc_object_attach( p_vout, p_this->p_libvlc );
 134         }
 135         return NULL;
 136     }
 137
 138     /* If a video output was provided, lock it, otherwise look for one. */
 139     if( p_vout )
 140     {
 141         vlc_object_yield( p_vout );
 142     }
 143     else
 144     {
 145         p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD );
 146
 147         if( !p_vout )
 148         {
 149             p_vout = vlc_object_find( p_this->p_libvlc,
 150                                       VLC_OBJECT_VOUT, FIND_CHILD );
 151             /* only first children of p_input for unused vout */
 152             if( p_vout && p_vout->p_parent != VLC_OBJECT(p_this->p_libvlc) )
 153             {
 154                 vlc_object_release( p_vout );
 155                 p_vout = NULL;
 156             }
 157             if( p_vout )
 158                 vlc_object_detach( p_vout );    /* Remove it from the GC */
 159         }
 160     }
 161
 162     /* If we now have a video output, check it has the right properties */
 163     if( p_vout )
 164     {
 165         char *psz_filter_chain;
 166         vlc_value_t val;
 167
 168         /* We don't directly check for the "vout-filter" variable for obvious
 169          * performance reasons. */
 170         if( p_vout->b_filter_change )
 171         {
 172             var_Get( p_vout, "vout-filter", &val );
 173             psz_filter_chain = val.psz_string;
 174
 175             if( psz_filter_chain && !*psz_filter_chain )
 176             {
 177                 free( psz_filter_chain );
 178                 psz_filter_chain = NULL;
 179             }
 180             if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
 181             {
 182                 free( p_vout->psz_filter_chain );
 183                 p_vout->psz_filter_chain = NULL;
 184             }
 185
 186             if( !psz_filter_chain && !p_vout->psz_filter_chain )
 187             {
 188                 p_vout->b_filter_change = false;
 189             }
 190
 191             free( psz_filter_chain );
 192         }
 193
 194         if( ( p_vout->fmt_render.i_width != p_fmt->i_width ) ||
 195             ( p_vout->fmt_render.i_height != p_fmt->i_height ) ||
 196             ( p_vout->fmt_render.i_aspect != p_fmt->i_aspect ) ||
 197             p_vout->b_filter_change )
 198         {
 199             /* We are not interested in this format, close this vout */
 200             vlc_object_release( p_vout );
 201             vout_Destroy( p_vout );
 202             p_vout = NULL;
 203         }
 204         else
 205         {
 206             /* This video output is cool! Hijack it. */
 207             spu_Attach( p_vout->p_spu, p_this, true );
 208             vlc_object_attach( p_vout, p_this );
 209             if( p_vout->b_title_show )
 210                 DisplayTitleOnOSD( p_vout );
 211             vlc_object_release( p_vout );
 212         }
 213     }
 214
 215     if( !p_vout )
 216     {
 217         msg_Dbg( p_this, "no usable vout present, spawning one" );
 218
 219         p_vout = vout_Create( p_this, p_fmt );
 220     }
 221
 222     return p_vout;
 223 }
 224
 225 /*****************************************************************************
 226  * vout_Create: creates a new video output thread
 227  *****************************************************************************
 228  * This function creates a new video output thread, and returns a pointer
 229  * to its description. On error, it returns NULL.
 230  *****************************************************************************/
 231 vout_thread_t * __vout_Create( vlc_object_t *p_parent, video_format_t *p_fmt )
 232 {
 233     vout_thread_t  * p_vout;                            /* thread descriptor */
 234     input_thread_t * p_input_thread;
 235     int              i_index;                               /* loop variable */
 236     vlc_value_t      val, text;
 237
 238     unsigned int i_width = p_fmt->i_width;
 239     unsigned int i_height = p_fmt->i_height;
 240     vlc_fourcc_t i_chroma = p_fmt->i_chroma;
 241     unsigned int i_aspect = p_fmt->i_aspect;
 242
 243     config_chain_t *p_cfg;
 244     char *psz_parser;
 245     char *psz_name;
 246
 247     /* Allocate descriptor */
 248     p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
 249     if( p_vout == NULL )
 250     {
 251         msg_Err( p_parent, "out of memory" );
 252         return NULL;
 253     }
 254
 255     /* Initialize pictures - translation tables and functions
 256      * will be initialized later in InitThread */
 257     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
 258     {
 259         p_vout->p_picture[i_index].pf_lock = NULL;
 260         p_vout->p_picture[i_index].pf_unlock = NULL;
 261         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 262         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 263         p_vout->p_picture[i_index].b_slow   = 0;
 264     }
 265
 266     /* No images in the heap */
 267     p_vout->i_heap_size = 0;
 268
 269     /* Initialize the rendering heap */
 270     I_RENDERPICTURES = 0;
 271
 272     vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
 273                  p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 274     p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
 275     p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
 276
 277     p_vout->render.i_width    = i_width;
 278     p_vout->render.i_height   = i_height;
 279     p_vout->render.i_chroma   = i_chroma;
 280     p_vout->render.i_aspect   = i_aspect;
 281
 282     p_vout->render.i_rmask    = 0;
 283     p_vout->render.i_gmask    = 0;
 284     p_vout->render.i_bmask    = 0;
 285
 286     p_vout->render.i_last_used_pic = -1;
 287     p_vout->render.b_allow_modify_pics = 1;
 288
 289     /* Zero the output heap */
 290     I_OUTPUTPICTURES = 0;
 291     p_vout->output.i_width    = 0;
 292     p_vout->output.i_height   = 0;
 293     p_vout->output.i_chroma   = 0;
 294     p_vout->output.i_aspect   = 0;
 295
 296     p_vout->output.i_rmask    = 0;
 297     p_vout->output.i_gmask    = 0;
 298     p_vout->output.i_bmask    = 0;
 299
 300     /* Initialize misc stuff */
 301     p_vout->i_changes    = 0;
 302     p_vout->f_gamma      = 0;
 303     p_vout->b_grayscale  = 0;
 304     p_vout->b_info       = 0;
 305     p_vout->b_interface  = 0;
 306     p_vout->b_scale      = 1;
 307     p_vout->b_fullscreen = 0;
 308     p_vout->i_alignment  = 0;
 309     p_vout->render_time  = 10;
 310     p_vout->c_fps_samples = 0;
 311     p_vout->b_filter_change = 0;
 312     p_vout->pf_control = 0;
 313     p_vout->p_parent_intf = 0;
 314     p_vout->i_par_num = p_vout->i_par_den = 1;
 315
 316     /* Initialize locks */
 317     vlc_mutex_init( &p_vout->picture_lock );
 318     vlc_mutex_init( &p_vout->change_lock );
 319     vlc_mutex_init( &p_vout->vfilter_lock );
 320
 321     /* Mouse coordinates */
 322     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 323     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 324     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 325     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 326     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 327
 328     /* Initialize subpicture unit */
 329     p_vout->p_spu = spu_Create( p_vout );
 330     spu_Attach( p_vout->p_spu, p_parent, true );
 331
 332     /* Attach the new object now so we can use var inheritance below */
 333     vlc_object_attach( p_vout, p_parent );
 334
 335     spu_Init( p_vout->p_spu );
 336
 337     /* Take care of some "interface/control" related initialisations */
 338     vout_IntfInit( p_vout );
 339
 340     /* If the parent is not a VOUT object, that means we are at the start of
 341      * the video output pipe */
 342     if( p_parent->i_object_type != VLC_OBJECT_VOUT )
 343     {
 344         /* Look for the default filter configuration */
 345         var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 346         var_Get( p_vout, "vout-filter", &val );
 347         p_vout->psz_filter_chain = val.psz_string;
 348
 349         /* Apply video filter2 objects on the first vout */
 350         var_Create( p_vout, "video-filter",
 351                     VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 352         var_Get( p_vout, "video-filter", &val );
 353         ParseVideoFilter2Chain( p_vout, val.psz_string );
 354         free( val.psz_string );
 355     }
 356     else
 357     {
 358         /* continue the parent's filter chain */
 359         char *psz_tmp;
 360
 361         /* Ugly hack to jump to our configuration chain */
 362         p_vout->psz_filter_chain
 363             = ((vout_thread_t *)p_parent)->psz_filter_chain;
 364         p_vout->psz_filter_chain
 365             = config_ChainCreate( &psz_tmp, &p_cfg, p_vout->psz_filter_chain );
 366         config_ChainDestroy( p_cfg );
 367         free( psz_tmp );
 368
 369         /* Create a video filter2 var ... but don't inherit values */
 370         var_Create( p_vout, "video-filter", VLC_VAR_STRING );
 371         ParseVideoFilter2Chain( p_vout, NULL );
 372     }
 373
 374     var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
 375     p_vout->b_vfilter_change = true;
 376     p_vout->i_vfilters = 0;
 377
 378     /* Choose the video output module */
 379     if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 380     {
 381         var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 382         var_Get( p_vout, "vout", &val );
 383         psz_parser = val.psz_string;
 384     }
 385     else
 386     {
 387         psz_parser = strdup( p_vout->psz_filter_chain );
 388     }
 389
 390     /* Create the vout thread */
 391     config_ChainCreate( &psz_name, &p_cfg, psz_parser );
 392     free( psz_parser );
 393     p_vout->p_cfg = p_cfg;
 394     p_vout->p_module = module_Need( p_vout,
 395         ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
 396         "video filter" : "video output", psz_name, p_vout->psz_filter_chain && *p_vout->psz_filter_chain );
 397     free( psz_name );
 398
 399     if( p_vout->p_module == NULL )
 400     {
 401         msg_Err( p_vout, "no suitable vout module" );
 402         vlc_object_detach( p_vout );
 403         vlc_object_release( p_vout );
 404         return NULL;
 405     }
 406
 407     /* Create a few object variables for interface interaction */
 408     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
 409     text.psz_string = _("Deinterlace");
 410     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
 411     val.psz_string = (char *)""; text.psz_string = _("Disable");
 412     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 413     val.psz_string = (char *)"discard"; text.psz_string = _("Discard");
 414     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 415     val.psz_string = (char *)"blend"; text.psz_string = _("Blend");
 416     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 417     val.psz_string = (char *)"mean"; text.psz_string = _("Mean");
 418     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 419     val.psz_string = (char *)"bob"; text.psz_string = _("Bob");
 420     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 421     val.psz_string = (char *)"linear"; text.psz_string = _("Linear");
 422     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 423     val.psz_string = (char *)"x"; text.psz_string = (char *)"X";
 424     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 425
 426     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 427     {
 428         var_Set( p_vout, "deinterlace", val );
 429         free( val.psz_string );
 430     }
 431     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 432
 433     var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 434     text.psz_string = _("Filters");
 435     var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
 436     var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
 437
 438     /* Calculate delay created by internal caching */
 439     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 440                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 441     if( p_input_thread )
 442     {
 443         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 444         vlc_object_release( p_input_thread );
 445     }
 446     else
 447     {
 448         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 449     }
 450
 451     if( vlc_thread_create( p_vout, "video output", RunThread,
 452                            VLC_THREAD_PRIORITY_OUTPUT, true ) )
 453     {
 454         msg_Err( p_vout, "out of memory" );
 455         module_Unneed( p_vout, p_vout->p_module );
 456         vlc_object_release( p_vout );
 457         return NULL;
 458     }
 459
 460     if( p_vout->b_error )
 461     {
 462         msg_Err( p_vout, "video output creation failed" );
 463
 464         /* Make sure the thread is destroyed */
 465         vlc_object_release( p_vout );
 466         return NULL;
 467     }
 468
 469     vlc_object_set_destructor( p_vout, vout_Destructor );
 470
 471     return p_vout;
 472 }
 473
 474 /*****************************************************************************
 475  * vout_Destroy: destroys a previously created video output
 476  *****************************************************************************
 477  * Destroy a terminated thread.
 478  * The function will request a destruction of the specified thread. If pi_error
 479  * is NULL, it will return once the thread is destroyed. Else, it will be
 480  * update using one of the THREAD_* constants.
 481  *****************************************************************************/
 482 void vout_Destroy( vout_thread_t *p_vout )
 483 {
 484     /* XXX: should go in the destructor */
 485     var_Destroy( p_vout, "intf-change" );
 486
 487     vlc_object_release( p_vout );
 488 }
 489
 490 static void vout_Destructor( vlc_object_t * p_this )
 491 {
 492     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 493
 494     /* Destroy the locks */
 495     vlc_mutex_destroy( &p_vout->picture_lock );
 496     vlc_mutex_destroy( &p_vout->change_lock );
 497     vlc_mutex_destroy( &p_vout->vfilter_lock );
 498
 499     /* Release the module */
 500     if( p_vout->p_module )
 501     {
 502         module_Unneed( p_vout, p_vout->p_module );
 503     }
 504
 505     free( p_vout->psz_filter_chain );
 506
 507     config_ChainDestroy( p_vout->p_cfg );
 508
 509 #ifndef __APPLE__
 510     vout_thread_t *p_another_vout;
 511
 512     playlist_t *p_playlist = pl_Yield( p_vout );
 513     if( p_playlist->b_die )
 514     {
 515         pl_Release( p_vout );
 516         return;
 517     }
 518     /* This is a dirty hack mostly for Linux, where there is no way to get the
 519      * GUI back if you closed it while playing video. This is solved in
 520      * Mac OS X, where we have this novelty called menubar, that will always
 521      * allow you access to the applications main functionality. They should try
 522      * that on linux sometime. */
 523     p_another_vout = vlc_object_find( p_this->p_libvlc,
 524                                       VLC_OBJECT_VOUT, FIND_ANYWHERE );
 525     if( p_another_vout == NULL )
 526         var_SetBool( p_playlist, "intf-show", true );
 527     else
 528         vlc_object_release( p_another_vout );
 529     pl_Release( p_vout );
 530 #endif
 531 }
 532
 533 /*****************************************************************************
 534  * InitThread: initialize video output thread
 535  *****************************************************************************
 536  * This function is called from RunThread and performs the second step of the
 537  * initialization. It returns 0 on success. Note that the thread's flag are not
 538  * modified inside this function.
 539  *****************************************************************************/
 540 static int InitThread( vout_thread_t *p_vout )
 541 {
 542     int i, i_aspect_x, i_aspect_y;
 543
 544     vlc_mutex_lock( &p_vout->change_lock );
 545
 546 #ifdef STATS
 547     p_vout->c_loops = 0;
 548 #endif
 549
 550     /* Initialize output method, it allocates direct buffers for us */
 551     if( p_vout->pf_init( p_vout ) )
 552     {
 553         vlc_mutex_unlock( &p_vout->change_lock );
 554         return VLC_EGENERIC;
 555     }
 556
 557     if( !I_OUTPUTPICTURES )
 558     {
 559         msg_Err( p_vout, "plugin was unable to allocate at least "
 560                          "one direct buffer" );
 561         p_vout->pf_end( p_vout );
 562         vlc_mutex_unlock( &p_vout->change_lock );
 563         return VLC_EGENERIC;
 564     }
 565
 566     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 567     {
 568         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 569                          "our internal buffers must have overflown." );
 570         p_vout->pf_end( p_vout );
 571         vlc_mutex_unlock( &p_vout->change_lock );
 572         return VLC_EGENERIC;
 573     }
 574
 575     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 576
 577     AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );
 578
 579     msg_Dbg( p_vout, "picture in %ix%i (%i,%i,%ix%i), "
 580              "chroma %4.4s, ar %i:%i, sar %i:%i",
 581              p_vout->fmt_render.i_width, p_vout->fmt_render.i_height,
 582              p_vout->fmt_render.i_x_offset, p_vout->fmt_render.i_y_offset,
 583              p_vout->fmt_render.i_visible_width,
 584              p_vout->fmt_render.i_visible_height,
 585              (char*)&p_vout->fmt_render.i_chroma,
 586              i_aspect_x, i_aspect_y,
 587              p_vout->fmt_render.i_sar_num, p_vout->fmt_render.i_sar_den );
 588
 589     AspectRatio( p_vout->fmt_in.i_aspect, &i_aspect_x, &i_aspect_y );
 590
 591     msg_Dbg( p_vout, "picture user %ix%i (%i,%i,%ix%i), "
 592              "chroma %4.4s, ar %i:%i, sar %i:%i",
 593              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 594              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 595              p_vout->fmt_in.i_visible_width,
 596              p_vout->fmt_in.i_visible_height,
 597              (char*)&p_vout->fmt_in.i_chroma,
 598              i_aspect_x, i_aspect_y,
 599              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 600
 601     if( !p_vout->fmt_out.i_width || !p_vout->fmt_out.i_height )
 602     {
 603         p_vout->fmt_out.i_width = p_vout->fmt_out.i_visible_width =
 604             p_vout->output.i_width;
 605         p_vout->fmt_out.i_height = p_vout->fmt_out.i_visible_height =
 606             p_vout->output.i_height;
 607         p_vout->fmt_out.i_x_offset =  p_vout->fmt_out.i_y_offset = 0;
 608
 609         p_vout->fmt_out.i_aspect = p_vout->output.i_aspect;
 610         p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 611     }
 612     if( !p_vout->fmt_out.i_sar_num || !p_vout->fmt_out.i_sar_num )
 613     {
 614         p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_aspect *
 615             p_vout->fmt_out.i_height;
 616         p_vout->fmt_out.i_sar_den = VOUT_ASPECT_FACTOR *
 617             p_vout->fmt_out.i_width;
 618     }
 619
 620     vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
 621                  p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
 622
 623     AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
 624
 625     msg_Dbg( p_vout, "picture out %ix%i (%i,%i,%ix%i), "
 626              "chroma %4.4s, ar %i:%i, sar %i:%i",
 627              p_vout->fmt_out.i_width, p_vout->fmt_out.i_height,
 628              p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
 629              p_vout->fmt_out.i_visible_width,
 630              p_vout->fmt_out.i_visible_height,
 631              (char*)&p_vout->fmt_out.i_chroma,
 632              i_aspect_x, i_aspect_y,
 633              p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den );
 634
 635     /* Calculate shifts from system-updated masks */
 636     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 637                  p_vout->output.i_rmask );
 638     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 639                  p_vout->output.i_gmask );
 640     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 641                  p_vout->output.i_bmask );
 642
 643     /* Check whether we managed to create direct buffers similar to
 644      * the render buffers, ie same size and chroma */
 645     if( ( p_vout->output.i_width == p_vout->render.i_width )
 646      && ( p_vout->output.i_height == p_vout->render.i_height )
 647      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 648     {
 649         /* Cool ! We have direct buffers, we can ask the decoder to
 650          * directly decode into them ! Map the first render buffers to
 651          * the first direct buffers, but keep the first direct buffer
 652          * for memcpy operations */
 653         p_vout->b_direct = 1;
 654
 655         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 656         {
 657             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 658                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 659                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 660             {
 661                 /* We have enough direct buffers so there's no need to
 662                  * try to use system memory buffers. */
 663                 break;
 664             }
 665             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 666             I_RENDERPICTURES++;
 667         }
 668
 669         msg_Dbg( p_vout, "direct render, mapping "
 670                  "render pictures 0-%i to system pictures 1-%i",
 671                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 672     }
 673     else
 674     {
 675         /* Rats... Something is wrong here, we could not find an output
 676          * plugin able to directly render what we decode. See if we can
 677          * find a chroma plugin to do the conversion */
 678         p_vout->b_direct = 0;
 679
 680         /* Choose the best module */
 681         p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL, 0 );
 682
 683         if( p_vout->chroma.p_module == NULL )
 684         {
 685             msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
 686                      (char*)&p_vout->render.i_chroma,
 687                      (char*)&p_vout->output.i_chroma );
 688             p_vout->pf_end( p_vout );
 689             vlc_mutex_unlock( &p_vout->change_lock );
 690             return VLC_EGENERIC;
 691         }
 692
 693         msg_Dbg( p_vout, "indirect render, mapping "
 694                  "render pictures 0-%i to system pictures %i-%i",
 695                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 696                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 697
 698         /* Append render buffers after the direct buffers */
 699         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 700         {
 701             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 702             I_RENDERPICTURES++;
 703
 704             /* Check if we have enough render pictures */
 705             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 706                 break;
 707         }
 708     }
 709
 710     /* Link pictures back to their heap */
 711     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 712     {
 713         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 714     }
 715
 716     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 717     {
 718         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 719     }
 720
 721 /* XXX XXX mark thread ready */
 722     return VLC_SUCCESS;
 723 }
 724
 725 /*****************************************************************************
 726  * RunThread: video output thread
 727  *****************************************************************************
 728  * Video output thread. This function does only returns when the thread is
 729  * terminated. It handles the pictures arriving in the video heap and the
 730  * display device events.
 731  *****************************************************************************/
 732 static void RunThread( vout_thread_t *p_vout)
 733 {
 734     int             i_index;                                /* index in heap */
 735     int             i_idle_loops = 0;  /* loops without displaying a picture */
 736     mtime_t         current_date;                            /* current date */
 737     mtime_t         display_date;                            /* display date */
 738
 739     picture_t *     p_picture;                            /* picture pointer */
 740     picture_t *     p_last_picture = NULL;                   /* last picture */
 741     picture_t *     p_directbuffer;              /* direct buffer to display */
 742
 743     subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
 744
 745     input_thread_t *p_input = NULL ;           /* Parent input, if it exists */
 746
 747     vlc_value_t     val;
 748     bool      b_drop_late;
 749
 750     int             i_displayed = 0, i_lost = 0, i_loops = 0;
 751
 752     /*
 753      * Initialize thread
 754      */
 755     p_vout->b_error = InitThread( p_vout );
 756
 757     var_Create( p_vout, "drop-late-frames", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 758     var_Get( p_vout, "drop-late-frames", &val );
 759     b_drop_late = val.b_bool;
 760
 761     /* signal the creation of the vout */
 762     vlc_thread_ready( p_vout );
 763
 764     if( p_vout->b_error )
 765         return;
 766
 767     if( p_vout->b_title_show )
 768         DisplayTitleOnOSD( p_vout );
 769
 770     /*
 771      * Main loop - it is not executed if an error occurred during
 772      * initialization
 773      */
 774     while( (!p_vout->b_die) && (!p_vout->b_error) )
 775     {
 776         /* Initialize loop variables */
 777         p_picture = NULL;
 778         display_date = 0;
 779         current_date = mdate();
 780
 781         i_loops++;
 782             if( !p_input )
 783             {
 784                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 785                                            FIND_PARENT );
 786             }
 787             if( p_input )
 788             {
 789                 vlc_mutex_lock( &p_input->p->counters.counters_lock );
 790                 stats_UpdateInteger( p_vout, p_input->p->counters.p_lost_pictures,
 791                                      i_lost , NULL);
 792                 stats_UpdateInteger( p_vout,
 793                                      p_input->p->counters.p_displayed_pictures,
 794                                      i_displayed , NULL);
 795                 i_displayed = i_lost = 0;
 796                 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 797                 vlc_object_release( p_input );
 798                 p_input = NULL;
 799             }
 800 #if 0
 801         p_vout->c_loops++;
 802         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 803         {
 804             msg_Dbg( p_vout, "picture heap: %d/%d",
 805                      I_RENDERPICTURES, p_vout->i_heap_size );
 806         }
 807 #endif
 808
 809         /*
 810          * Find the picture to display (the one with the earliest date).
 811          * This operation does not need lock, since only READY_PICTUREs
 812          * are handled. */
 813         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 814         {
 815             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 816                 && ( (p_picture == NULL) ||
 817                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 818             {
 819                 p_picture = PP_RENDERPICTURE[i_index];
 820                 display_date = p_picture->date;
 821             }
 822         }
 823
 824         if( p_picture )
 825         {
 826             /* If we met the last picture, parse again to see whether there is
 827              * a more appropriate one. */
 828             if( p_picture == p_last_picture )
 829             {
 830                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 831                 {
 832                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 833                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 834                         && ((p_picture == p_last_picture) ||
 835                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 836                     {
 837                         p_picture = PP_RENDERPICTURE[i_index];
 838                         display_date = p_picture->date;
 839                     }
 840                 }
 841             }
 842
 843             /* If we found better than the last picture, destroy it */
 844             if( p_last_picture && p_picture != p_last_picture )
 845             {
 846                 vlc_mutex_lock( &p_vout->picture_lock );
 847                 if( p_last_picture->i_refcount )
 848                 {
 849                     p_last_picture->i_status = DISPLAYED_PICTURE;
 850                 }
 851                 else
 852                 {
 853                     p_last_picture->i_status = DESTROYED_PICTURE;
 854                     p_vout->i_heap_size--;
 855                 }
 856                 vlc_mutex_unlock( &p_vout->picture_lock );
 857                 p_last_picture = NULL;
 858             }
 859
 860             /* Compute FPS rate */
 861             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 862                 = display_date;
 863
 864             if( !p_picture->b_force &&
 865                 p_picture != p_last_picture &&
 866                 display_date < current_date + p_vout->render_time &&
 867                 b_drop_late )
 868             {
 869                 /* Picture is late: it will be destroyed and the thread
 870                  * will directly choose the next picture */
 871                 vlc_mutex_lock( &p_vout->picture_lock );
 872                 if( p_picture->i_refcount )
 873                 {
 874                     /* Pretend we displayed the picture, but don't destroy
 875                      * it since the decoder might still need it. */
 876                     p_picture->i_status = DISPLAYED_PICTURE;
 877                 }
 878                 else
 879                 {
 880                     /* Destroy the picture without displaying it */
 881                     p_picture->i_status = DESTROYED_PICTURE;
 882                     p_vout->i_heap_size--;
 883                 }
 884                 msg_Warn( p_vout, "late picture skipped (%"PRId64")",
 885                                   current_date - display_date );
 886                 i_lost++;
 887                 vlc_mutex_unlock( &p_vout->picture_lock );
 888
 889                 continue;
 890             }
 891
 892             if( display_date >
 893                 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
 894             {
 895                 /* Picture is waaay too early: it will be destroyed */
 896                 vlc_mutex_lock( &p_vout->picture_lock );
 897                 if( p_picture->i_refcount )
 898                 {
 899                     /* Pretend we displayed the picture, but don't destroy
 900                      * it since the decoder might still need it. */
 901                     p_picture->i_status = DISPLAYED_PICTURE;
 902                 }
 903                 else
 904                 {
 905                     /* Destroy the picture without displaying it */
 906                     p_picture->i_status = DESTROYED_PICTURE;
 907                     p_vout->i_heap_size--;
 908                 }
 909                 i_lost++;
 910                 msg_Warn( p_vout, "vout warning: early picture skipped "
 911                           "(%"PRId64")", display_date - current_date
 912                           - p_vout->i_pts_delay );
 913                 vlc_mutex_unlock( &p_vout->picture_lock );
 914
 915                 continue;
 916             }
 917
 918             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 919             {
 920                 /* A picture is ready to be rendered, but its rendering date
 921                  * is far from the current one so the thread will perform an
 922                  * empty loop as if no picture were found. The picture state
 923                  * is unchanged */
 924                 p_picture    = NULL;
 925                 display_date = 0;
 926             }
 927             else if( p_picture == p_last_picture )
 928             {
 929                 /* We are asked to repeat the previous picture, but we first
 930                  * wait for a couple of idle loops */
 931                 if( i_idle_loops < 4 )
 932                 {
 933                     p_picture    = NULL;
 934                     display_date = 0;
 935                 }
 936                 else
 937                 {
 938                     /* We set the display date to something high, otherwise
 939                      * we'll have lots of problems with late pictures */
 940                     display_date = current_date + p_vout->render_time;
 941                 }
 942             }
 943         }
 944
 945         if( p_picture == NULL )
 946         {
 947             i_idle_loops++;
 948         }
 949
 950         /* Video Filter2 stuff */
 951         if( p_vout->b_vfilter_change == true )
 952         {
 953             int i;
 954             vlc_mutex_lock( &p_vout->vfilter_lock );
 955             RemoveVideoFilters2( p_vout );
 956             for( i = 0; i < p_vout->i_vfilters_cfg; i++ )
 957             {
 958                 filter_t *p_vfilter =
 959                     p_vout->pp_vfilters[p_vout->i_vfilters] =
 960                         vlc_object_create( p_vout, VLC_OBJECT_FILTER );
 961
 962                 vlc_object_attach( p_vfilter, p_vout );
 963
 964                 p_vfilter->pf_vout_buffer_new = video_new_buffer_filter;
 965                 p_vfilter->pf_vout_buffer_del = video_del_buffer_filter;
 966
 967                 if( !p_vout->i_vfilters )
 968                 {
 969                     p_vfilter->fmt_in.video = p_vout->fmt_render;
 970                 }
 971                 else
 972                 {
 973                     p_vfilter->fmt_in.video = (p_vfilter-1)->fmt_out.video;
 974                 }
 975                 /* TODO: one day filters in the middle of the chain might
 976                  * have a different fmt_out.video than fmt_render ... */
 977                 p_vfilter->fmt_out.video = p_vout->fmt_render;
 978
 979                 p_vfilter->p_cfg = p_vout->p_vfilters_cfg[i];
 980                 p_vfilter->p_module = module_Need( p_vfilter, "video filter2",
 981                                                    p_vout->psz_vfilters[i],
 982                                                    true );
 983
 984                 if( p_vfilter->p_module )
 985                 {
 986                     p_vfilter->p_owner =
 987                         malloc( sizeof( filter_owner_sys_t ) );
 988                     p_vfilter->p_owner->p_vout = p_vout;
 989                     p_vout->i_vfilters++;
 990                     msg_Dbg( p_vout, "video filter found (%s)",
 991                              p_vout->psz_vfilters[i] );
 992                 }
 993                 else
 994                 {
 995                     msg_Err( p_vout, "no video filter found (%s)",
 996                              p_vout->psz_vfilters[i] );
 997                     vlc_object_detach( p_vfilter );
 998                     vlc_object_release( p_vfilter );
 999                 }
1000             }
1001             p_vout->b_vfilter_change = false;
1002             vlc_mutex_unlock( &p_vout->vfilter_lock );
1003         }
1004
1005         if( p_picture )
1006         {
1007             int i;
1008             for( i = 0; i < p_vout->i_vfilters; i++ )
1009             {
1010                 picture_t *p_old = p_picture;
1011                 p_picture  = p_vout->pp_vfilters[i]->pf_video_filter(
1012                                  p_vout->pp_vfilters[i], p_picture );
1013                 if( !p_picture )
1014                 {
1015                     break;
1016                 }
1017                 /* FIXME: this is kind of wrong
1018                  * if you have 2 or more vfilters and the 2nd breaks,
1019                  * on the next loop the 1st one will be applied again */
1020
1021                 /* if p_old and p_picture are the same (ie the filter
1022                  * worked on the old picture), then following code is
1023                  * still alright since i_status gets changed back to
1024                  * the right value */
1025                 if( p_old->i_refcount )
1026                 {
1027                     p_old->i_status = DISPLAYED_PICTURE;
1028                 }
1029                 else
1030                 {
1031                     p_old->i_status = DESTROYED_PICTURE;
1032                 }
1033                 p_picture->i_status = READY_PICTURE;
1034             }
1035         }
1036
1037         if( p_picture && p_vout->b_snapshot )
1038         {
1039             p_vout->b_snapshot = false;
1040             vout_Snapshot( p_vout, p_picture );
1041         }
1042
1043         /*
1044          * Check for subpictures to display
1045          */
1046         if( display_date > 0 )
1047         {
1048             if( !p_input )
1049             {
1050                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
1051                                            FIND_PARENT );
1052             }
1053             p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date,
1054             p_input ? var_GetBool( p_input, "state" ) == PAUSE_S : false );
1055             if( p_input )
1056                 vlc_object_release( p_input );
1057             p_input = NULL;
1058         }
1059
1060         /*
1061          * Perform rendering
1062          */
1063         i_displayed++;
1064         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
1065
1066         /*
1067          * Call the plugin-specific rendering method if there is one
1068          */
1069         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
1070         {
1071             /* Render the direct buffer returned by vout_RenderPicture */
1072             p_vout->pf_render( p_vout, p_directbuffer );
1073         }
1074
1075         /*
1076          * Sleep, wake up
1077          */
1078         if( display_date != 0 && p_directbuffer != NULL )
1079         {
1080             mtime_t current_render_time = mdate() - current_date;
1081             /* if render time is very large we don't include it in the mean */
1082             if( current_render_time < p_vout->render_time +
1083                 VOUT_DISPLAY_DELAY )
1084             {
1085                 /* Store render time using a sliding mean weighting to
1086                  * current value in a 3 to 1 ratio*/
1087                 p_vout->render_time *= 3;
1088                 p_vout->render_time += current_render_time;
1089                 p_vout->render_time >>= 2;
1090             }
1091         }
1092
1093         /* Give back change lock */
1094         vlc_mutex_unlock( &p_vout->change_lock );
1095
1096         /* Sleep a while or until a given date */
1097         if( display_date != 0 )
1098         {
1099             /* If there are filters in the chain, better give them the picture
1100              * in advance */
1101             if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
1102             {
1103                 mwait( display_date - VOUT_MWAIT_TOLERANCE );
1104             }
1105         }
1106         else
1107         {
1108             msleep( VOUT_IDLE_SLEEP );
1109         }
1110
1111         /* On awakening, take back lock and send immediately picture
1112          * to display. */
1113         vlc_mutex_lock( &p_vout->change_lock );
1114
1115         /*
1116          * Display the previously rendered picture
1117          */
1118         if( p_picture != NULL && p_directbuffer != NULL )
1119         {
1120             /* Display the direct buffer returned by vout_RenderPicture */
1121             if( p_vout->pf_display )
1122             {
1123                 p_vout->pf_display( p_vout, p_directbuffer );
1124             }
1125
1126             /* Tell the vout this was the last picture and that it does not
1127              * need to be forced anymore. */
1128             p_last_picture = p_picture;
1129             p_last_picture->b_force = 0;
1130         }
1131
1132         if( p_picture != NULL )
1133         {
1134             /* Reinitialize idle loop count */
1135             i_idle_loops = 0;
1136         }
1137
1138         /*
1139          * Check events and manage thread
1140          */
1141         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
1142         {
1143             /* A fatal error occurred, and the thread must terminate
1144              * immediately, without displaying anything - setting b_error to 1
1145              * causes the immediate end of the main while() loop. */
1146             p_vout->b_error = 1;
1147         }
1148
1149         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
1150         {
1151             /* this must only happen when the vout plugin is incapable of
1152              * rescaling the picture itself. In this case we need to destroy
1153              * the current picture buffers and recreate new ones with the right
1154              * dimensions */
1155             int i;
1156
1157             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
1158
1159             p_vout->pf_end( p_vout );
1160             for( i = 0; i < I_OUTPUTPICTURES; i++ )
1161                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
1162
1163             I_OUTPUTPICTURES = 0;
1164             if( p_vout->pf_init( p_vout ) )
1165             {
1166                 msg_Err( p_vout, "cannot resize display" );
1167                 /* FIXME: pf_end will be called again in EndThread() */
1168                 p_vout->b_error = 1;
1169             }
1170
1171             /* Need to reinitialise the chroma plugin */
1172             if( p_vout->chroma.p_module )
1173             {
1174                 if( p_vout->chroma.p_module->pf_deactivate )
1175                     p_vout->chroma.p_module->pf_deactivate( VLC_OBJECT(p_vout) );
1176                 p_vout->chroma.p_module->pf_activate( VLC_OBJECT(p_vout) );
1177             }
1178         }
1179
1180         if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1181         {
1182             /* This happens when the picture buffers need to be recreated.
1183              * This is useful on multimonitor displays for instance.
1184              *
1185              * Warning: This only works when the vout creates only 1 picture
1186              * buffer!! */
1187             p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1188
1189             if( !p_vout->b_direct )
1190             {
1191                 module_Unneed( p_vout, p_vout->chroma.p_module );
1192             }
1193
1194             vlc_mutex_lock( &p_vout->picture_lock );
1195
1196             p_vout->pf_end( p_vout );
1197
1198             I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1199
1200             p_vout->b_error = InitThread( p_vout );
1201
1202             vlc_mutex_unlock( &p_vout->picture_lock );
1203         }
1204     }
1205
1206     if( p_input )
1207     {
1208         vlc_object_release( p_input );
1209     }
1210
1211     /*
1212      * Error loop - wait until the thread destruction is requested
1213      */
1214     if( p_vout->b_error )
1215     {
1216         ErrorThread( p_vout );
1217     }
1218
1219     /* End of thread */
1220     EndThread( p_vout );
1221 }
1222
1223 /*****************************************************************************
1224  * ErrorThread: RunThread() error loop
1225  *****************************************************************************
1226  * This function is called when an error occurred during thread main's loop.
1227  * The thread can still receive feed, but must be ready to terminate as soon
1228  * as possible.
1229  *****************************************************************************/
1230 static void ErrorThread( vout_thread_t *p_vout )
1231 {
1232     /* Wait until a `die' order */
1233     while( !p_vout->b_die )
1234     {
1235         /* Sleep a while */
1236         msleep( VOUT_IDLE_SLEEP );
1237     }
1238 }
1239
1240 /*****************************************************************************
1241  * EndThread: thread destruction
1242  *****************************************************************************
1243  * This function is called when the thread ends after a sucessful
1244  * initialization. It frees all resources allocated by InitThread.
1245  *****************************************************************************/
1246 static void EndThread( vout_thread_t *p_vout )
1247 {
1248     int     i_index;                                        /* index in heap */
1249
1250 #ifdef STATS
1251     {
1252         struct tms cpu_usage;
1253         times( &cpu_usage );
1254
1255         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1256                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1257     }
1258 #endif
1259
1260     if( !p_vout->b_direct )
1261     {
1262         module_Unneed( p_vout, p_vout->chroma.p_module );
1263     }
1264
1265     /* Destroy all remaining pictures */
1266     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1267     {
1268         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1269         {
1270             free( p_vout->p_picture[i_index].p_data_orig );
1271         }
1272     }
1273
1274     /* Destroy subpicture unit */
1275     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), false );
1276     spu_Destroy( p_vout->p_spu );
1277
1278     /* Destroy the video filters2 */
1279     RemoveVideoFilters2( p_vout );
1280
1281     /* Destroy translation tables */
1282     p_vout->pf_end( p_vout );
1283
1284     /* Release the change lock */
1285     vlc_mutex_unlock( &p_vout->change_lock );
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 oldval, vlc_value_t newval,
1389                       void *p_data )
1390 {
1391     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1392     vlc_value_t val;
1393     (void)psz_variable; (void)newval; (void)oldval; (void)p_data;
1394     val.b_bool = true;
1395     var_Set( p_vout, "intf-change", val );
1396     return VLC_SUCCESS;
1397 }
1398
1399 /*****************************************************************************
1400  * Helper thread for object variables callbacks.
1401  * Only used to avoid deadlocks when using the video embedded mode.
1402  *****************************************************************************/
1403 typedef struct suxor_thread_t
1404 {
1405     VLC_COMMON_MEMBERS
1406     input_thread_t *p_input;
1407
1408 } suxor_thread_t;
1409
1410 static void SuxorRestartVideoES( suxor_thread_t *p_this )
1411 {
1412     vlc_value_t val;
1413
1414     vlc_thread_ready( p_this );
1415
1416     /* Now restart current video stream */
1417     var_Get( p_this->p_input, "video-es", &val );
1418     if( val.i_int >= 0 )
1419     {
1420         vlc_value_t val_es;
1421         val_es.i_int = -VIDEO_ES;
1422         var_Set( p_this->p_input, "video-es", val_es );
1423         var_Set( p_this->p_input, "video-es", val );
1424     }
1425
1426     vlc_object_release( p_this->p_input );
1427
1428     vlc_object_release( p_this );
1429 }
1430
1431 /*****************************************************************************
1432  * object variables callbacks: a bunch of object variables are used by the
1433  * interfaces to interact with the vout.
1434  *****************************************************************************/
1435 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1436                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1437 {
1438     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1439     input_thread_t *p_input;
1440     vlc_value_t val;
1441
1442     char *psz_mode = newval.psz_string;
1443     char *psz_filter, *psz_deinterlace = NULL;
1444     (void)psz_cmd; (void)oldval; (void)p_data;
1445
1446     var_Get( p_vout, "vout-filter", &val );
1447     psz_filter = val.psz_string;
1448     if( psz_filter ) psz_deinterlace = strstr( psz_filter, "deinterlace" );
1449
1450     if( !psz_mode || !*psz_mode )
1451     {
1452         if( psz_deinterlace )
1453         {
1454             char *psz_src = psz_deinterlace + sizeof("deinterlace") - 1;
1455             if( psz_src[0] == ':' ) psz_src++;
1456             memmove( psz_deinterlace, psz_src, strlen(psz_src) + 1 );
1457         }
1458     }
1459     else if( !psz_deinterlace )
1460     {
1461         psz_filter = realloc( psz_filter, strlen( psz_filter ) +
1462                               sizeof(":deinterlace") );
1463         if( psz_filter && *psz_filter ) strcat( psz_filter, ":" );
1464         strcat( psz_filter, "deinterlace" );
1465     }
1466
1467     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1468                                                  FIND_PARENT );
1469     if( !p_input ) return VLC_EGENERIC;
1470
1471     if( psz_mode && *psz_mode )
1472     {
1473         /* Modify input as well because the vout might have to be restarted */
1474         val.psz_string = psz_mode;
1475         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1476         var_Set( p_input, "deinterlace-mode", val );
1477     }
1478     vlc_object_release( p_input );
1479
1480     val.b_bool = true;
1481     var_Set( p_vout, "intf-change", val );
1482
1483     val.psz_string = psz_filter;
1484     var_Set( p_vout, "vout-filter", val );
1485     free( psz_filter );
1486
1487     return VLC_SUCCESS;
1488 }
1489
1490 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1491                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1492 {
1493     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1494     input_thread_t *p_input;
1495     vlc_value_t val;
1496     (void)psz_cmd; (void)oldval; (void)p_data;
1497
1498     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1499                                                  FIND_PARENT );
1500     if (!p_input)
1501     {
1502         msg_Err( p_vout, "Input not found" );
1503         return( VLC_EGENERIC );
1504     }
1505
1506     val.b_bool = true;
1507     var_Set( p_vout, "intf-change", val );
1508
1509     /* Modify input as well because the vout might have to be restarted */
1510     val.psz_string = newval.psz_string;
1511     var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1512
1513     var_Set( p_input, "vout-filter", val );
1514
1515     /* Now restart current video stream */
1516     var_Get( p_input, "video-es", &val );
1517     if( val.i_int >= 0 )
1518     {
1519         suxor_thread_t *p_suxor =
1520             vlc_object_create( p_vout, sizeof(suxor_thread_t) );
1521         p_suxor->p_input = p_input;
1522         p_vout->b_filter_change = true;
1523         vlc_object_yield( p_input );
1524         vlc_thread_create( p_suxor, "suxor", SuxorRestartVideoES,
1525                            VLC_THREAD_PRIORITY_LOW, false );
1526     }
1527
1528     vlc_object_release( p_input );
1529
1530     return VLC_SUCCESS;
1531 }
1532
1533 /*****************************************************************************
1534  * Video Filter2 stuff
1535  *****************************************************************************/
1536 static int ParseVideoFilter2Chain( vout_thread_t *p_vout, char *psz_vfilters )
1537 {
1538     int i;
1539     for( i = 0; i < p_vout->i_vfilters_cfg; i++ )
1540     {
1541         struct config_chain_t *p_cfg =
1542             p_vout->p_vfilters_cfg[p_vout->i_vfilters_cfg];
1543         config_ChainDestroy( p_cfg );
1544         free( p_vout->psz_vfilters[p_vout->i_vfilters_cfg] );
1545         p_vout->psz_vfilters[p_vout->i_vfilters_cfg] = NULL;
1546     }
1547     p_vout->i_vfilters_cfg = 0;
1548     if( psz_vfilters && *psz_vfilters )
1549     {
1550         char *psz_parser = psz_vfilters;
1551
1552         while( psz_parser && *psz_parser )
1553         {
1554             psz_parser = config_ChainCreate(
1555                             &p_vout->psz_vfilters[p_vout->i_vfilters_cfg],
1556                             &p_vout->p_vfilters_cfg[p_vout->i_vfilters_cfg],
1557                             psz_parser );
1558             msg_Dbg( p_vout, "adding vfilter: %s",
1559                      p_vout->psz_vfilters[p_vout->i_vfilters_cfg] );
1560             p_vout->i_vfilters_cfg++;
1561             if( psz_parser && *psz_parser )
1562             {
1563                 if( p_vout->i_vfilters_cfg == MAX_VFILTERS )
1564                 {
1565                     msg_Warn( p_vout,
1566                   "maximum number of video filters reached. \"%s\" discarded",
1567                               psz_parser );
1568                     break;
1569                 }
1570             }
1571         }
1572     }
1573     return VLC_SUCCESS;
1574 }
1575
1576 static int VideoFilter2Callback( vlc_object_t *p_this, char const *psz_cmd,
1577                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1578 {
1579     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1580     (void)psz_cmd; (void)oldval; (void)p_data;
1581
1582     vlc_mutex_lock( &p_vout->vfilter_lock );
1583     ParseVideoFilter2Chain( p_vout, newval.psz_string );
1584     p_vout->b_vfilter_change = true;
1585     vlc_mutex_unlock( &p_vout->vfilter_lock );
1586
1587     return VLC_SUCCESS;
1588 }
1589
1590 static void RemoveVideoFilters2( vout_thread_t *p_vout )
1591 {
1592     int i;
1593     for( i = 0; i < p_vout->i_vfilters; i++ )
1594     {
1595         vlc_object_detach( p_vout->pp_vfilters[i] );
1596         if( p_vout->pp_vfilters[i]->p_module )
1597         {
1598             module_Unneed( p_vout->pp_vfilters[i],
1599                            p_vout->pp_vfilters[i]->p_module );
1600         }
1601
1602         free( p_vout->pp_vfilters[i]->p_owner );
1603         vlc_object_release( p_vout->pp_vfilters[i] );
1604     }
1605     p_vout->i_vfilters = 0;
1606 }
1607
1608 static void DisplayTitleOnOSD( vout_thread_t *p_vout )
1609 {
1610     input_thread_t *p_input;
1611     mtime_t i_now, i_stop;
1612
1613     p_input = (input_thread_t *)vlc_object_find( p_vout,
1614               VLC_OBJECT_INPUT, FIND_ANYWHERE );
1615     if( p_input )
1616     {
1617         i_now = mdate();
1618         i_stop = i_now + (mtime_t)(p_vout->i_title_timeout * 1000);
1619         char *psz_nowplaying =
1620             input_item_GetNowPlaying( input_GetItem( p_input ) );
1621         char *psz_artist = input_item_GetArtist( input_GetItem( p_input ) );
1622         char *psz_name = input_item_GetTitle( input_GetItem( p_input ) );
1623         if( EMPTY_STR( psz_name ) )
1624         {
1625             free( psz_name );
1626             psz_name = input_item_GetName( input_GetItem( p_input ) );
1627         }
1628         if( !EMPTY_STR( psz_nowplaying ) )
1629         {
1630             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1631                                    psz_nowplaying, NULL,
1632                                    p_vout->i_title_position,
1633                                    30 + p_vout->fmt_in.i_width
1634                                       - p_vout->fmt_in.i_visible_width
1635                                       - p_vout->fmt_in.i_x_offset,
1636                                    20 + p_vout->fmt_in.i_y_offset,
1637                                    i_now, i_stop );
1638         }
1639         else if( !EMPTY_STR( psz_artist ) )
1640         {
1641             char *psz_string = NULL;
1642             if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
1643             {
1644                 vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1645                                        psz_string, NULL,
1646                                        p_vout->i_title_position,
1647                                        30 + p_vout->fmt_in.i_width
1648                                           - p_vout->fmt_in.i_visible_width
1649                                           - p_vout->fmt_in.i_x_offset,
1650                                        20 + p_vout->fmt_in.i_y_offset,
1651                                        i_now, i_stop );
1652                 free( psz_string );
1653             }
1654         }
1655         else
1656         {
1657             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1658                                    psz_name, NULL,
1659                                    p_vout->i_title_position,
1660                                    30 + p_vout->fmt_in.i_width
1661                                       - p_vout->fmt_in.i_visible_width
1662                                       - p_vout->fmt_in.i_x_offset,
1663                                    20 + p_vout->fmt_in.i_y_offset,
1664                                    i_now, i_stop );
1665         }
1666         vlc_object_release( p_input );
1667         free( psz_artist );
1668         free( psz_name );
1669         free( psz_nowplaying );
1670     }
1671 }
1672