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_common.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
  48 #include <vlc_filter.h>
  49 #include <vlc_osd.h>
  50
  51 #if defined( __APPLE__ )
  52 /* Include darwin_specific.h here if needed */
  53 #endif
  54
  55 /** FIXME This is quite ugly but needed while we don't have counters
  56  * helpers */
  57 #include "input/input_internal.h"
  58
  59 #include "modules/modules.h"
  60
  61 /*****************************************************************************
  62  * Local prototypes
  63  *****************************************************************************/
  64 static int      InitThread        ( vout_thread_t * );
  65 static void     RunThread         ( vout_thread_t * );
  66 static void     ErrorThread       ( vout_thread_t * );
  67 static void     EndThread         ( vout_thread_t * );
  68
  69 static void     AspectRatio       ( int, int *, int * );
  70 static int      BinaryLog         ( uint32_t );
  71 static void     MaskToShift       ( int *, int *, uint32_t );
  72
  73 static void     vout_Destructor   ( vlc_object_t * p_this );
  74
  75 /* Object variables callbacks */
  76 static int DeinterlaceCallback( vlc_object_t *, char const *,
  77                                 vlc_value_t, vlc_value_t, void * );
  78 static int FilterCallback( vlc_object_t *, char const *,
  79                            vlc_value_t, vlc_value_t, void * );
  80 static int VideoFilter2Callback( vlc_object_t *, char const *,
  81                                  vlc_value_t, vlc_value_t, void * );
  82
  83 /* From vout_intf.c */
  84 int vout_Snapshot( vout_thread_t *, picture_t * );
  85
  86 /* Display media title in OSD */
  87 static void DisplayTitleOnOSD( vout_thread_t *p_vout );
  88
  89 /*****************************************************************************
  90  * Video Filter2 functions
  91  *****************************************************************************/
  92 static picture_t *video_new_buffer_filter( filter_t *p_filter )
  93 {
  94     picture_t *p_picture;
  95     vout_thread_t *p_vout = (vout_thread_t*)p_filter->p_owner;
  96
  97     p_picture = vout_CreatePicture( p_vout, 0, 0, 0 );
  98
  99     return p_picture;
 100 }
 101
 102 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
 103 {
 104     vout_DestroyPicture( (vout_thread_t*)p_filter->p_owner, p_pic );
 105 }
 106
 107 static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
 108 {
 109     p_filter->pf_vout_buffer_new = video_new_buffer_filter;
 110     p_filter->pf_vout_buffer_del = video_del_buffer_filter;
 111     p_filter->p_owner = p_data; /* p_vout */
 112     return VLC_SUCCESS;
 113 }
 114
 115 /*****************************************************************************
 116  * vout_Request: find a video output thread, create one, or destroy one.
 117  *****************************************************************************
 118  * This function looks for a video output thread matching the current
 119  * properties. If not found, it spawns a new one.
 120  *****************************************************************************/
 121 vout_thread_t *__vout_Request( vlc_object_t *p_this, vout_thread_t *p_vout,
 122                                video_format_t *p_fmt )
 123 {
 124     if( !p_fmt )
 125     {
 126         /* Reattach video output to the instance before bailing out */
 127         if( p_vout )
 128         {
 129             spu_Attach( p_vout->p_spu, p_this, false );
 130             vlc_object_detach( p_vout );
 131             vlc_object_attach( p_vout, p_this->p_libvlc );
 132         }
 133         return NULL;
 134     }
 135
 136     /* If a video output was provided, lock it, otherwise look for one. */
 137     if( p_vout )
 138     {
 139         vlc_object_yield( p_vout );
 140     }
 141     else
 142     {
 143         p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD );
 144
 145         if( !p_vout )
 146         {
 147             p_vout = vlc_object_find( p_this->p_libvlc,
 148                                       VLC_OBJECT_VOUT, FIND_CHILD );
 149             /* only first children of p_input for unused vout */
 150             if( p_vout && p_vout->p_parent != VLC_OBJECT(p_this->p_libvlc) )
 151             {
 152                 vlc_object_release( p_vout );
 153                 p_vout = NULL;
 154             }
 155             if( p_vout )
 156                 vlc_object_detach( p_vout );    /* Remove it from the GC */
 157         }
 158     }
 159
 160     /* If we now have a video output, check it has the right properties */
 161     if( p_vout )
 162     {
 163         char *psz_filter_chain;
 164         vlc_value_t val;
 165
 166         /* We don't directly check for the "vout-filter" variable for obvious
 167          * performance reasons. */
 168         if( p_vout->b_filter_change )
 169         {
 170             var_Get( p_vout, "vout-filter", &val );
 171             psz_filter_chain = val.psz_string;
 172
 173             if( psz_filter_chain && !*psz_filter_chain )
 174             {
 175                 free( psz_filter_chain );
 176                 psz_filter_chain = NULL;
 177             }
 178             if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
 179             {
 180                 free( p_vout->psz_filter_chain );
 181                 p_vout->psz_filter_chain = NULL;
 182             }
 183
 184             if( !psz_filter_chain && !p_vout->psz_filter_chain )
 185             {
 186                 p_vout->b_filter_change = false;
 187             }
 188
 189             free( psz_filter_chain );
 190         }
 191
 192         if( ( p_vout->fmt_render.i_width != p_fmt->i_width ) ||
 193             ( p_vout->fmt_render.i_height != p_fmt->i_height ) ||
 194             ( p_vout->fmt_render.i_aspect != p_fmt->i_aspect ) ||
 195             p_vout->b_filter_change )
 196         {
 197             /* We are not interested in this format, close this vout */
 198             vlc_object_release( p_vout );
 199             vlc_object_release( p_vout );
 200             p_vout = NULL;
 201         }
 202         else
 203         {
 204             /* This video output is cool! Hijack it. */
 205             spu_Attach( p_vout->p_spu, p_this, true );
 206             vlc_object_attach( p_vout, p_this );
 207             if( p_vout->b_title_show )
 208                 DisplayTitleOnOSD( p_vout );
 209             vlc_object_release( p_vout );
 210         }
 211     }
 212
 213     if( !p_vout )
 214     {
 215         msg_Dbg( p_this, "no usable vout present, spawning one" );
 216
 217         p_vout = vout_Create( p_this, p_fmt );
 218     }
 219
 220     return p_vout;
 221 }
 222
 223 /*****************************************************************************
 224  * vout_Create: creates a new video output thread
 225  *****************************************************************************
 226  * This function creates a new video output thread, and returns a pointer
 227  * to its description. On error, it returns NULL.
 228  *****************************************************************************/
 229 vout_thread_t * __vout_Create( vlc_object_t *p_parent, video_format_t *p_fmt )
 230 {
 231     vout_thread_t  * p_vout;                            /* thread descriptor */
 232     input_thread_t * p_input_thread;
 233     int              i_index;                               /* loop variable */
 234     vlc_value_t      val, text;
 235
 236     unsigned int i_width = p_fmt->i_width;
 237     unsigned int i_height = p_fmt->i_height;
 238     vlc_fourcc_t i_chroma = p_fmt->i_chroma;
 239     unsigned int i_aspect = p_fmt->i_aspect;
 240
 241     config_chain_t *p_cfg;
 242     char *psz_parser;
 243     char *psz_name;
 244
 245     /* Allocate descriptor */
 246     static const char typename[] = "video output";
 247     p_vout = vlc_custom_create( p_parent, sizeof( *p_vout ), VLC_OBJECT_VOUT,
 248                                 typename );
 249     if( p_vout == NULL )
 250         return NULL;
 251
 252     /* Initialize pictures - translation tables and functions
 253      * will be initialized later in InitThread */
 254     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
 255     {
 256         p_vout->p_picture[i_index].pf_lock = NULL;
 257         p_vout->p_picture[i_index].pf_unlock = NULL;
 258         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 259         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 260         p_vout->p_picture[i_index].b_slow   = 0;
 261     }
 262
 263     /* No images in the heap */
 264     p_vout->i_heap_size = 0;
 265
 266     /* Initialize the rendering heap */
 267     I_RENDERPICTURES = 0;
 268
 269     vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
 270                  p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 271     p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
 272     p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
 273
 274     p_vout->render.i_width    = i_width;
 275     p_vout->render.i_height   = i_height;
 276     p_vout->render.i_chroma   = i_chroma;
 277     p_vout->render.i_aspect   = i_aspect;
 278
 279     p_vout->render.i_rmask    = 0;
 280     p_vout->render.i_gmask    = 0;
 281     p_vout->render.i_bmask    = 0;
 282
 283     p_vout->render.i_last_used_pic = -1;
 284     p_vout->render.b_allow_modify_pics = 1;
 285
 286     /* Zero the output heap */
 287     I_OUTPUTPICTURES = 0;
 288     p_vout->output.i_width    = 0;
 289     p_vout->output.i_height   = 0;
 290     p_vout->output.i_chroma   = 0;
 291     p_vout->output.i_aspect   = 0;
 292
 293     p_vout->output.i_rmask    = 0;
 294     p_vout->output.i_gmask    = 0;
 295     p_vout->output.i_bmask    = 0;
 296
 297     /* Initialize misc stuff */
 298     p_vout->i_changes    = 0;
 299     p_vout->f_gamma      = 0;
 300     p_vout->b_grayscale  = 0;
 301     p_vout->b_info       = 0;
 302     p_vout->b_interface  = 0;
 303     p_vout->b_scale      = 1;
 304     p_vout->b_fullscreen = 0;
 305     p_vout->i_alignment  = 0;
 306     p_vout->render_time  = 10;
 307     p_vout->c_fps_samples = 0;
 308     p_vout->b_filter_change = 0;
 309     p_vout->pf_control = NULL;
 310     p_vout->p_window = NULL;
 311     p_vout->i_par_num = p_vout->i_par_den = 1;
 312
 313     /* Initialize locks */
 314     vlc_mutex_init( &p_vout->picture_lock );
 315     vlc_mutex_init( &p_vout->change_lock );
 316     vlc_mutex_init( &p_vout->vfilter_lock );
 317
 318     /* Mouse coordinates */
 319     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 320     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 321     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 322     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 323     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 324
 325     /* Initialize subpicture unit */
 326     p_vout->p_spu = spu_Create( p_vout );
 327     spu_Attach( p_vout->p_spu, p_parent, true );
 328
 329     /* Attach the new object now so we can use var inheritance below */
 330     vlc_object_attach( p_vout, p_parent );
 331
 332     spu_Init( p_vout->p_spu );
 333
 334     /* Take care of some "interface/control" related initialisations */
 335     vout_IntfInit( p_vout );
 336
 337     /* If the parent is not a VOUT object, that means we are at the start of
 338      * the video output pipe */
 339     if( p_parent->i_object_type != VLC_OBJECT_VOUT )
 340     {
 341         /* Look for the default filter configuration */
 342         p_vout->psz_filter_chain =
 343             var_CreateGetStringCommand( p_vout, "vout-filter" );
 344
 345         /* Apply video filter2 objects on the first vout */
 346         p_vout->psz_vf2 =
 347             var_CreateGetStringCommand( p_vout, "video-filter" );
 348     }
 349     else
 350     {
 351         /* continue the parent's filter chain */
 352         char *psz_tmp;
 353
 354         /* Ugly hack to jump to our configuration chain */
 355         p_vout->psz_filter_chain
 356             = ((vout_thread_t *)p_parent)->psz_filter_chain;
 357         p_vout->psz_filter_chain
 358             = config_ChainCreate( &psz_tmp, &p_cfg, p_vout->psz_filter_chain );
 359         config_ChainDestroy( p_cfg );
 360         free( psz_tmp );
 361
 362         /* Create a video filter2 var ... but don't inherit values */
 363         var_Create( p_vout, "video-filter",
 364                     VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 365         p_vout->psz_vf2 = var_GetString( p_vout, "video-filter" );
 366     }
 367
 368     var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
 369     p_vout->p_vf2_chain = filter_chain_New( p_vout, "video filter2",
 370         false, video_filter_buffer_allocation_init, NULL, p_vout );
 371
 372     /* Choose the video output module */
 373     if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 374     {
 375         var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 376         var_Get( p_vout, "vout", &val );
 377         psz_parser = val.psz_string;
 378     }
 379     else
 380     {
 381         psz_parser = strdup( p_vout->psz_filter_chain );
 382     }
 383
 384     /* Create the vout thread */
 385     config_ChainCreate( &psz_name, &p_cfg, psz_parser );
 386     free( psz_parser );
 387     p_vout->p_cfg = p_cfg;
 388     p_vout->p_module = module_Need( p_vout,
 389         ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
 390         "video filter" : "video output", psz_name, p_vout->psz_filter_chain && *p_vout->psz_filter_chain );
 391     free( psz_name );
 392
 393     if( p_vout->p_module == NULL )
 394     {
 395         msg_Err( p_vout, "no suitable vout module" );
 396         vlc_object_detach( p_vout );
 397         vlc_object_release( p_vout );
 398         return NULL;
 399     }
 400
 401     /* Create a few object variables for interface interaction */
 402     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
 403     text.psz_string = _("Deinterlace");
 404     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
 405     val.psz_string = (char *)""; text.psz_string = _("Disable");
 406     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 407     val.psz_string = (char *)"discard"; text.psz_string = _("Discard");
 408     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 409     val.psz_string = (char *)"blend"; text.psz_string = _("Blend");
 410     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 411     val.psz_string = (char *)"mean"; text.psz_string = _("Mean");
 412     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 413     val.psz_string = (char *)"bob"; text.psz_string = _("Bob");
 414     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 415     val.psz_string = (char *)"linear"; text.psz_string = _("Linear");
 416     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 417     val.psz_string = (char *)"x"; text.psz_string = (char *)"X";
 418     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 419
 420     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 421     {
 422         var_Set( p_vout, "deinterlace", val );
 423         free( val.psz_string );
 424     }
 425     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 426
 427     var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 428     text.psz_string = _("Filters");
 429     var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
 430     var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
 431
 432     /* Calculate delay created by internal caching */
 433     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 434                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 435     if( p_input_thread )
 436     {
 437         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 438         vlc_object_release( p_input_thread );
 439     }
 440     else
 441     {
 442         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 443     }
 444
 445     if( vlc_thread_create( p_vout, "video output", RunThread,
 446                            VLC_THREAD_PRIORITY_OUTPUT, true ) )
 447     {
 448         module_Unneed( p_vout, p_vout->p_module );
 449         vlc_object_release( p_vout );
 450         return NULL;
 451     }
 452
 453     if( p_vout->b_error )
 454     {
 455         msg_Err( p_vout, "video output creation failed" );
 456
 457         /* Make sure the thread is destroyed */
 458         vlc_object_release( p_vout );
 459         return NULL;
 460     }
 461
 462     vlc_object_set_destructor( p_vout, vout_Destructor );
 463
 464     return p_vout;
 465 }
 466
 467 static void vout_Destructor( vlc_object_t * p_this )
 468 {
 469     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 470
 471     /* Destroy the locks */
 472     vlc_mutex_destroy( &p_vout->picture_lock );
 473     vlc_mutex_destroy( &p_vout->change_lock );
 474     vlc_mutex_destroy( &p_vout->vfilter_lock );
 475
 476     /* Release the module */
 477     if( p_vout->p_module )
 478     {
 479         module_Unneed( p_vout, p_vout->p_module );
 480     }
 481
 482     free( p_vout->psz_filter_chain );
 483
 484     config_ChainDestroy( p_vout->p_cfg );
 485
 486 #ifndef __APPLE__
 487     vout_thread_t *p_another_vout;
 488
 489     /* This is a dirty hack mostly for Linux, where there is no way to get the
 490      * GUI back if you closed it while playing video. This is solved in
 491      * Mac OS X, where we have this novelty called menubar, that will always
 492      * allow you access to the applications main functionality. They should try
 493      * that on linux sometime. */
 494     p_another_vout = vlc_object_find( p_this->p_libvlc,
 495                                       VLC_OBJECT_VOUT, FIND_ANYWHERE );
 496     if( p_another_vout == NULL )
 497         var_SetBool( p_this->p_libvlc, "intf-show", true );
 498     else
 499         vlc_object_release( p_another_vout );
 500 #endif
 501 }
 502
 503 /*****************************************************************************
 504  * InitThread: initialize video output thread
 505  *****************************************************************************
 506  * This function is called from RunThread and performs the second step of the
 507  * initialization. It returns 0 on success. Note that the thread's flag are not
 508  * modified inside this function.
 509  *****************************************************************************/
 510 static picture_t *get_pic( filter_t *p_filter )
 511 {
 512     picture_t *p_pic = (picture_t *)p_filter->p_owner;
 513     p_filter->p_owner = NULL;
 514     return p_pic;
 515 }
 516
 517 static int InitThread( vout_thread_t *p_vout )
 518 {
 519     int i, i_aspect_x, i_aspect_y;
 520
 521     vlc_mutex_lock( &p_vout->change_lock );
 522
 523 #ifdef STATS
 524     p_vout->c_loops = 0;
 525 #endif
 526
 527     /* Initialize output method, it allocates direct buffers for us */
 528     if( p_vout->pf_init( p_vout ) )
 529     {
 530         vlc_mutex_unlock( &p_vout->change_lock );
 531         return VLC_EGENERIC;
 532     }
 533
 534     if( !I_OUTPUTPICTURES )
 535     {
 536         msg_Err( p_vout, "plugin was unable to allocate at least "
 537                          "one direct buffer" );
 538         p_vout->pf_end( p_vout );
 539         vlc_mutex_unlock( &p_vout->change_lock );
 540         return VLC_EGENERIC;
 541     }
 542
 543     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 544     {
 545         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 546                          "our internal buffers must have overflown." );
 547         p_vout->pf_end( p_vout );
 548         vlc_mutex_unlock( &p_vout->change_lock );
 549         return VLC_EGENERIC;
 550     }
 551
 552     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 553
 554     AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );
 555
 556     msg_Dbg( p_vout, "picture in %ix%i (%i,%i,%ix%i), "
 557              "chroma %4.4s, ar %i:%i, sar %i:%i",
 558              p_vout->fmt_render.i_width, p_vout->fmt_render.i_height,
 559              p_vout->fmt_render.i_x_offset, p_vout->fmt_render.i_y_offset,
 560              p_vout->fmt_render.i_visible_width,
 561              p_vout->fmt_render.i_visible_height,
 562              (char*)&p_vout->fmt_render.i_chroma,
 563              i_aspect_x, i_aspect_y,
 564              p_vout->fmt_render.i_sar_num, p_vout->fmt_render.i_sar_den );
 565
 566     AspectRatio( p_vout->fmt_in.i_aspect, &i_aspect_x, &i_aspect_y );
 567
 568     msg_Dbg( p_vout, "picture user %ix%i (%i,%i,%ix%i), "
 569              "chroma %4.4s, ar %i:%i, sar %i:%i",
 570              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 571              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 572              p_vout->fmt_in.i_visible_width,
 573              p_vout->fmt_in.i_visible_height,
 574              (char*)&p_vout->fmt_in.i_chroma,
 575              i_aspect_x, i_aspect_y,
 576              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 577
 578     if( !p_vout->fmt_out.i_width || !p_vout->fmt_out.i_height )
 579     {
 580         p_vout->fmt_out.i_width = p_vout->fmt_out.i_visible_width =
 581             p_vout->output.i_width;
 582         p_vout->fmt_out.i_height = p_vout->fmt_out.i_visible_height =
 583             p_vout->output.i_height;
 584         p_vout->fmt_out.i_x_offset =  p_vout->fmt_out.i_y_offset = 0;
 585
 586         p_vout->fmt_out.i_aspect = p_vout->output.i_aspect;
 587         p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 588     }
 589     if( !p_vout->fmt_out.i_sar_num || !p_vout->fmt_out.i_sar_num )
 590     {
 591         p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_aspect *
 592             p_vout->fmt_out.i_height;
 593         p_vout->fmt_out.i_sar_den = VOUT_ASPECT_FACTOR *
 594             p_vout->fmt_out.i_width;
 595     }
 596
 597     vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
 598                  p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
 599
 600     AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
 601
 602     msg_Dbg( p_vout, "picture out %ix%i (%i,%i,%ix%i), "
 603              "chroma %4.4s, ar %i:%i, sar %i:%i",
 604              p_vout->fmt_out.i_width, p_vout->fmt_out.i_height,
 605              p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
 606              p_vout->fmt_out.i_visible_width,
 607              p_vout->fmt_out.i_visible_height,
 608              (char*)&p_vout->fmt_out.i_chroma,
 609              i_aspect_x, i_aspect_y,
 610              p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den );
 611
 612     /* Calculate shifts from system-updated masks */
 613     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 614                  p_vout->output.i_rmask );
 615     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 616                  p_vout->output.i_gmask );
 617     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 618                  p_vout->output.i_bmask );
 619
 620     /* Check whether we managed to create direct buffers similar to
 621      * the render buffers, ie same size and chroma */
 622     if( ( p_vout->output.i_width == p_vout->render.i_width )
 623      && ( p_vout->output.i_height == p_vout->render.i_height )
 624      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 625     {
 626         /* Cool ! We have direct buffers, we can ask the decoder to
 627          * directly decode into them ! Map the first render buffers to
 628          * the first direct buffers, but keep the first direct buffer
 629          * for memcpy operations */
 630         p_vout->b_direct = 1;
 631
 632         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 633         {
 634             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 635                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 636                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 637             {
 638                 /* We have enough direct buffers so there's no need to
 639                  * try to use system memory buffers. */
 640                 break;
 641             }
 642             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 643             I_RENDERPICTURES++;
 644         }
 645
 646         msg_Dbg( p_vout, "direct render, mapping "
 647                  "render pictures 0-%i to system pictures 1-%i",
 648                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 649     }
 650     else
 651     {
 652         /* Rats... Something is wrong here, we could not find an output
 653          * plugin able to directly render what we decode. See if we can
 654          * find a chroma plugin to do the conversion */
 655         p_vout->b_direct = 0;
 656
 657         /* Choose the best module */
 658         p_vout->p_chroma = vlc_object_create( p_vout, VLC_OBJECT_FILTER );
 659         filter_t *p_chroma = p_vout->p_chroma;
 660         vlc_object_attach( p_chroma, p_vout );
 661         /* TODO: Set the fmt_in and fmt_out stuff here */
 662         p_chroma->fmt_in.video = p_vout->fmt_render;
 663         p_chroma->fmt_out.video = p_vout->fmt_out;
 664
 665         /* TODO: put in a function */
 666         p_chroma->fmt_out.video.i_rmask = p_vout->output.i_rmask;
 667         p_chroma->fmt_out.video.i_gmask = p_vout->output.i_gmask;
 668         p_chroma->fmt_out.video.i_bmask = p_vout->output.i_bmask;
 669         p_chroma->fmt_out.video.i_rrshift = p_vout->output.i_rrshift;
 670         p_chroma->fmt_out.video.i_lrshift = p_vout->output.i_lrshift;
 671         p_chroma->fmt_out.video.i_rgshift = p_vout->output.i_rgshift;
 672         p_chroma->fmt_out.video.i_lgshift = p_vout->output.i_lgshift;
 673         p_chroma->fmt_out.video.i_rbshift = p_vout->output.i_rbshift;
 674         p_chroma->fmt_out.video.i_lbshift = p_vout->output.i_lbshift;
 675         p_chroma->p_module = module_Need( p_chroma, "video filter2", NULL, 0 );
 676
 677         if( p_chroma->p_module == NULL )
 678         {
 679             msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
 680                      (char*)&p_vout->render.i_chroma,
 681                      (char*)&p_vout->output.i_chroma );
 682             vlc_object_detach( p_vout->p_chroma );
 683             p_vout->p_chroma = NULL;
 684             p_vout->pf_end( p_vout );
 685             vlc_mutex_unlock( &p_vout->change_lock );
 686             return VLC_EGENERIC;
 687         }
 688         p_chroma->pf_vout_buffer_new = get_pic;
 689
 690         msg_Dbg( p_vout, "indirect render, mapping "
 691                  "render pictures 0-%i to system pictures %i-%i",
 692                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 693                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 694
 695         /* Append render buffers after the direct buffers */
 696         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 697         {
 698             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 699             I_RENDERPICTURES++;
 700
 701             /* Check if we have enough render pictures */
 702             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 703                 break;
 704         }
 705     }
 706
 707     /* Link pictures back to their heap */
 708     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 709     {
 710         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 711     }
 712
 713     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 714     {
 715         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 716     }
 717
 718 /* XXX XXX mark thread ready */
 719     return VLC_SUCCESS;
 720 }
 721
 722 /*****************************************************************************
 723  * RunThread: video output thread
 724  *****************************************************************************
 725  * Video output thread. This function does only returns when the thread is
 726  * terminated. It handles the pictures arriving in the video heap and the
 727  * display device events.
 728  *****************************************************************************/
 729 static void RunThread( vout_thread_t *p_vout)
 730 {
 731     int             i_index;                                /* index in heap */
 732     int             i_idle_loops = 0;  /* loops without displaying a picture */
 733     mtime_t         current_date;                            /* current date */
 734     mtime_t         display_date;                            /* display date */
 735
 736     picture_t *     p_picture;                            /* picture pointer */
 737     picture_t *     p_last_picture = NULL;                   /* last picture */
 738     picture_t *     p_directbuffer;              /* direct buffer to display */
 739
 740     subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
 741
 742     input_thread_t *p_input = NULL ;           /* Parent input, if it exists */
 743
 744     vlc_value_t     val;
 745     bool      b_drop_late;
 746
 747     int             i_displayed = 0, i_lost = 0, i_loops = 0;
 748
 749     /*
 750      * Initialize thread
 751      */
 752     p_vout->b_error = InitThread( p_vout );
 753
 754     var_Create( p_vout, "drop-late-frames", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 755     var_Get( p_vout, "drop-late-frames", &val );
 756     b_drop_late = val.b_bool;
 757
 758     /* signal the creation of the vout */
 759     vlc_thread_ready( p_vout );
 760
 761     if( p_vout->b_error )
 762         return;
 763
 764     vlc_object_lock( p_vout );
 765
 766     if( p_vout->b_title_show )
 767         DisplayTitleOnOSD( p_vout );
 768
 769     /*
 770      * Main loop - it is not executed if an error occurred during
 771      * initialization
 772      */
 773     while( (vlc_object_alive( p_vout )) && (!p_vout->b_error) )
 774     {
 775         /* Initialize loop variables */
 776         p_picture = NULL;
 777         display_date = 0;
 778         current_date = mdate();
 779
 780         i_loops++;
 781             if( !p_input )
 782             {
 783                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 784                                            FIND_PARENT );
 785             }
 786             if( p_input )
 787             {
 788                 vlc_mutex_lock( &p_input->p->counters.counters_lock );
 789                 stats_UpdateInteger( p_vout, p_input->p->counters.p_lost_pictures,
 790                                      i_lost , NULL);
 791                 stats_UpdateInteger( p_vout,
 792                                      p_input->p->counters.p_displayed_pictures,
 793                                      i_displayed , NULL);
 794                 i_displayed = i_lost = 0;
 795                 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 796                 vlc_object_release( p_input );
 797                 p_input = NULL;
 798             }
 799 #if 0
 800         p_vout->c_loops++;
 801         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 802         {
 803             msg_Dbg( p_vout, "picture heap: %d/%d",
 804                      I_RENDERPICTURES, p_vout->i_heap_size );
 805         }
 806 #endif
 807
 808         /*
 809          * Find the picture to display (the one with the earliest date).
 810          * This operation does not need lock, since only READY_PICTUREs
 811          * are handled. */
 812         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 813         {
 814             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 815                 && ( (p_picture == NULL) ||
 816                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 817             {
 818                 p_picture = PP_RENDERPICTURE[i_index];
 819                 display_date = p_picture->date;
 820             }
 821         }
 822
 823         if( p_picture )
 824         {
 825             /* If we met the last picture, parse again to see whether there is
 826              * a more appropriate one. */
 827             if( p_picture == p_last_picture )
 828             {
 829                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 830                 {
 831                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 832                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 833                         && ((p_picture == p_last_picture) ||
 834                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 835                     {
 836                         p_picture = PP_RENDERPICTURE[i_index];
 837                         display_date = p_picture->date;
 838                     }
 839                 }
 840             }
 841
 842             /* If we found better than the last picture, destroy it */
 843             if( p_last_picture && p_picture != p_last_picture )
 844             {
 845                 vlc_mutex_lock( &p_vout->picture_lock );
 846                 if( p_last_picture->i_refcount )
 847                 {
 848                     p_last_picture->i_status = DISPLAYED_PICTURE;
 849                 }
 850                 else
 851                 {
 852                     p_last_picture->i_status = DESTROYED_PICTURE;
 853                     p_vout->i_heap_size--;
 854                 }
 855                 vlc_mutex_unlock( &p_vout->picture_lock );
 856                 p_last_picture = NULL;
 857             }
 858
 859             /* Compute FPS rate */
 860             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 861                 = display_date;
 862
 863             if( !p_picture->b_force &&
 864                 p_picture != p_last_picture &&
 865                 display_date < current_date + p_vout->render_time &&
 866                 b_drop_late )
 867             {
 868                 /* Picture is late: it will be destroyed and the thread
 869                  * will directly choose the next picture */
 870                 vlc_mutex_lock( &p_vout->picture_lock );
 871                 if( p_picture->i_refcount )
 872                 {
 873                     /* Pretend we displayed the picture, but don't destroy
 874                      * it since the decoder might still need it. */
 875                     p_picture->i_status = DISPLAYED_PICTURE;
 876                 }
 877                 else
 878                 {
 879                     /* Destroy the picture without displaying it */
 880                     p_picture->i_status = DESTROYED_PICTURE;
 881                     p_vout->i_heap_size--;
 882                 }
 883                 msg_Warn( p_vout, "late picture skipped (%"PRId64")",
 884                                   current_date - display_date );
 885                 i_lost++;
 886                 vlc_mutex_unlock( &p_vout->picture_lock );
 887
 888                 continue;
 889             }
 890
 891             if( display_date >
 892                 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
 893             {
 894                 /* Picture is waaay too early: it will be destroyed */
 895                 vlc_mutex_lock( &p_vout->picture_lock );
 896                 if( p_picture->i_refcount )
 897                 {
 898                     /* Pretend we displayed the picture, but don't destroy
 899                      * it since the decoder might still need it. */
 900                     p_picture->i_status = DISPLAYED_PICTURE;
 901                 }
 902                 else
 903                 {
 904                     /* Destroy the picture without displaying it */
 905                     p_picture->i_status = DESTROYED_PICTURE;
 906                     p_vout->i_heap_size--;
 907                 }
 908                 i_lost++;
 909                 msg_Warn( p_vout, "vout warning: early picture skipped "
 910                           "(%"PRId64")", display_date - current_date
 911                           - p_vout->i_pts_delay );
 912                 vlc_mutex_unlock( &p_vout->picture_lock );
 913
 914                 continue;
 915             }
 916
 917             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 918             {
 919                 /* A picture is ready to be rendered, but its rendering date
 920                  * is far from the current one so the thread will perform an
 921                  * empty loop as if no picture were found. The picture state
 922                  * is unchanged */
 923                 p_picture    = NULL;
 924                 display_date = 0;
 925             }
 926             else if( p_picture == p_last_picture )
 927             {
 928                 /* We are asked to repeat the previous picture, but we first
 929                  * wait for a couple of idle loops */
 930                 if( i_idle_loops < 4 )
 931                 {
 932                     p_picture    = NULL;
 933                     display_date = 0;
 934                 }
 935                 else
 936                 {
 937                     /* We set the display date to something high, otherwise
 938                      * we'll have lots of problems with late pictures */
 939                     display_date = current_date + p_vout->render_time;
 940                 }
 941             }
 942         }
 943
 944         if( p_picture == NULL )
 945         {
 946             i_idle_loops++;
 947         }
 948
 949         /* Video Filter2 stuff */
 950         if( p_vout->psz_vf2 )
 951         {
 952             es_format_t fmt;
 953
 954             vlc_mutex_lock( &p_vout->vfilter_lock );
 955
 956             es_format_Init( &fmt, VIDEO_ES, p_vout->fmt_render.i_chroma );
 957             fmt.video = p_vout->fmt_render;
 958             filter_chain_Reset( p_vout->p_vf2_chain, &fmt, &fmt );
 959
 960             if( filter_chain_AppendFromString( p_vout->p_vf2_chain,
 961                                                p_vout->psz_vf2 ) < 0 )
 962                 msg_Err( p_vout, "Video filter chain creation failed" );
 963
 964             free( p_vout->psz_vf2 );
 965             p_vout->psz_vf2 = NULL;
 966             vlc_mutex_unlock( &p_vout->vfilter_lock );
 967         }
 968
 969         if( p_picture )
 970         {
 971             p_picture = filter_chain_VideoFilter( p_vout->p_vf2_chain,
 972                                                   p_picture );
 973         }
 974
 975         if( p_picture && p_vout->b_snapshot )
 976         {
 977             p_vout->b_snapshot = false;
 978             vout_Snapshot( p_vout, p_picture );
 979         }
 980
 981         /*
 982          * Check for subpictures to display
 983          */
 984         if( display_date > 0 )
 985         {
 986             if( !p_input )
 987             {
 988                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 989                                            FIND_PARENT );
 990             }
 991             p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date,
 992             p_input ? var_GetBool( p_input, "state" ) == PAUSE_S : false );
 993             if( p_input )
 994                 vlc_object_release( p_input );
 995             p_input = NULL;
 996         }
 997
 998         /*
 999          * Perform rendering
1000          */
1001         i_displayed++;
1002         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
1003
1004         /*
1005          * Call the plugin-specific rendering method if there is one
1006          */
1007         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
1008         {
1009             /* Render the direct buffer returned by vout_RenderPicture */
1010             p_vout->pf_render( p_vout, p_directbuffer );
1011         }
1012
1013         /*
1014          * Sleep, wake up
1015          */
1016         if( display_date != 0 && p_directbuffer != NULL )
1017         {
1018             mtime_t current_render_time = mdate() - current_date;
1019             /* if render time is very large we don't include it in the mean */
1020             if( current_render_time < p_vout->render_time +
1021                 VOUT_DISPLAY_DELAY )
1022             {
1023                 /* Store render time using a sliding mean weighting to
1024                  * current value in a 3 to 1 ratio*/
1025                 p_vout->render_time *= 3;
1026                 p_vout->render_time += current_render_time;
1027                 p_vout->render_time >>= 2;
1028             }
1029         }
1030
1031         /* Give back change lock */
1032         vlc_mutex_unlock( &p_vout->change_lock );
1033
1034         vlc_object_unlock( p_vout );
1035
1036         /* Sleep a while or until a given date */
1037         if( display_date != 0 )
1038         {
1039             /* If there are filters in the chain, better give them the picture
1040              * in advance */
1041             if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
1042             {
1043                 mwait( display_date - VOUT_MWAIT_TOLERANCE );
1044             }
1045         }
1046         else
1047         {
1048             msleep( VOUT_IDLE_SLEEP );
1049         }
1050
1051         /* On awakening, take back lock and send immediately picture
1052          * to display. */
1053         vlc_object_lock( p_vout );
1054         /* Note: vlc_object_alive() could be false here, and we
1055          * could be dead */
1056         vlc_mutex_lock( &p_vout->change_lock );
1057
1058         /*
1059          * Display the previously rendered picture
1060          */
1061         if( p_picture != NULL && p_directbuffer != NULL )
1062         {
1063             /* Display the direct buffer returned by vout_RenderPicture */
1064             if( p_vout->pf_display )
1065             {
1066                 p_vout->pf_display( p_vout, p_directbuffer );
1067             }
1068
1069             /* Tell the vout this was the last picture and that it does not
1070              * need to be forced anymore. */
1071             p_last_picture = p_picture;
1072             p_last_picture->b_force = 0;
1073         }
1074
1075         if( p_picture != NULL )
1076         {
1077             /* Reinitialize idle loop count */
1078             i_idle_loops = 0;
1079         }
1080
1081         /*
1082          * Check events and manage thread
1083          */
1084         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
1085         {
1086             /* A fatal error occurred, and the thread must terminate
1087              * immediately, without displaying anything - setting b_error to 1
1088              * causes the immediate end of the main while() loop. */
1089             p_vout->b_error = 1;
1090         }
1091
1092         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
1093         {
1094             /* this must only happen when the vout plugin is incapable of
1095              * rescaling the picture itself. In this case we need to destroy
1096              * the current picture buffers and recreate new ones with the right
1097              * dimensions */
1098             int i;
1099
1100             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
1101
1102             p_vout->pf_end( p_vout );
1103             for( i = 0; i < I_OUTPUTPICTURES; i++ )
1104                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
1105
1106             I_OUTPUTPICTURES = 0;
1107             if( p_vout->pf_init( p_vout ) )
1108             {
1109                 msg_Err( p_vout, "cannot resize display" );
1110                 /* FIXME: pf_end will be called again in EndThread() */
1111                 p_vout->b_error = 1;
1112             }
1113
1114             /* Need to reinitialise the chroma plugin. Since we might need
1115              * resizing too and it's not sure that we already had it,
1116              * recreate the chroma plugin chain from scratch. */
1117             /* dionoea */
1118             if( p_vout->p_chroma->p_module )
1119             {
1120                 filter_t *p_chroma = p_vout->p_chroma;
1121                 module_Unneed( p_chroma, p_chroma->p_module );
1122                 p_chroma->fmt_out.video = p_vout->fmt_out;
1123                 p_chroma->fmt_out.video.i_rmask = p_vout->output.i_rmask;
1124                 p_chroma->fmt_out.video.i_gmask = p_vout->output.i_gmask;
1125                 p_chroma->fmt_out.video.i_bmask = p_vout->output.i_bmask;
1126                 p_chroma->fmt_out.video.i_rrshift = p_vout->output.i_rrshift;
1127                 p_chroma->fmt_out.video.i_lrshift = p_vout->output.i_lrshift;
1128                 p_chroma->fmt_out.video.i_rgshift = p_vout->output.i_rgshift;
1129                 p_chroma->fmt_out.video.i_lgshift = p_vout->output.i_lgshift;
1130                 p_chroma->fmt_out.video.i_rbshift = p_vout->output.i_rbshift;
1131                 p_chroma->fmt_out.video.i_lbshift = p_vout->output.i_lbshift;
1132                 p_chroma->p_module = module_Need( p_chroma, "video filter2", NULL, 0 );
1133                 if( !p_chroma->p_module )
1134                 {
1135                     msg_Err( p_vout, "WOW THIS SUCKS BIG TIME!!!!!" );
1136                 }
1137             }
1138         }
1139
1140         if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1141         {
1142             /* This happens when the picture buffers need to be recreated.
1143              * This is useful on multimonitor displays for instance.
1144              *
1145              * Warning: This only works when the vout creates only 1 picture
1146              * buffer!! */
1147             p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1148
1149             if( !p_vout->b_direct )
1150             {
1151                 module_Unneed( p_vout->p_chroma, p_vout->p_chroma->p_module );
1152                 vlc_object_detach( p_vout->p_chroma );
1153                 vlc_object_release( p_vout->p_chroma );
1154                 p_vout->p_chroma = NULL;
1155             }
1156
1157             vlc_mutex_lock( &p_vout->picture_lock );
1158
1159             p_vout->pf_end( p_vout );
1160
1161             I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1162
1163             p_vout->b_error = InitThread( p_vout );
1164
1165             vlc_mutex_unlock( &p_vout->picture_lock );
1166         }
1167     }
1168
1169
1170     if( p_input )
1171     {
1172         vlc_object_release( p_input );
1173     }
1174
1175     /*
1176      * Error loop - wait until the thread destruction is requested
1177      */
1178     if( p_vout->b_error )
1179     {
1180         ErrorThread( p_vout );
1181     }
1182
1183     /* End of thread */
1184     EndThread( p_vout );
1185     vlc_object_unlock( p_vout );
1186 }
1187
1188 /*****************************************************************************
1189  * ErrorThread: RunThread() error loop
1190  *****************************************************************************
1191  * This function is called when an error occurred during thread main's loop.
1192  * The thread can still receive feed, but must be ready to terminate as soon
1193  * as possible.
1194  *****************************************************************************/
1195 static void ErrorThread( vout_thread_t *p_vout )
1196 {
1197     /* Wait until a `die' order */
1198     while( !p_vout->b_die )
1199     {
1200         /* Sleep a while */
1201         msleep( VOUT_IDLE_SLEEP );
1202     }
1203 }
1204
1205 /*****************************************************************************
1206  * EndThread: thread destruction
1207  *****************************************************************************
1208  * This function is called when the thread ends after a sucessful
1209  * initialization. It frees all resources allocated by InitThread.
1210  *****************************************************************************/
1211 static void EndThread( vout_thread_t *p_vout )
1212 {
1213     int     i_index;                                        /* index in heap */
1214
1215 #ifdef STATS
1216     {
1217         struct tms cpu_usage;
1218         times( &cpu_usage );
1219
1220         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1221                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1222     }
1223 #endif
1224
1225     if( !p_vout->b_direct )
1226     {
1227         module_Unneed( p_vout->p_chroma, p_vout->p_chroma->p_module );
1228         vlc_object_release( p_vout->p_chroma );
1229         p_vout->p_chroma = NULL;
1230     }
1231
1232     /* Destroy all remaining pictures */
1233     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1234     {
1235         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1236         {
1237             free( p_vout->p_picture[i_index].p_data_orig );
1238         }
1239     }
1240
1241     /* Destroy subpicture unit */
1242     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), false );
1243     spu_Destroy( p_vout->p_spu );
1244
1245     /* Destroy the video filters2 */
1246     filter_chain_Delete( p_vout->p_vf2_chain );
1247
1248     /* Destroy translation tables */
1249     p_vout->pf_end( p_vout );
1250
1251     /* Release the change lock */
1252     vlc_mutex_unlock( &p_vout->change_lock );
1253 }
1254
1255 /* following functions are local */
1256
1257 static int ReduceHeight( int i_ratio )
1258 {
1259     int i_dummy = VOUT_ASPECT_FACTOR;
1260     int i_pgcd  = 1;
1261
1262     if( !i_ratio )
1263     {
1264         return i_pgcd;
1265     }
1266
1267     /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1268     while( !(i_ratio & 1) && !(i_dummy & 1) )
1269     {
1270         i_ratio >>= 1;
1271         i_dummy >>= 1;
1272         i_pgcd  <<= 1;
1273     }
1274
1275     while( !(i_ratio % 3) && !(i_dummy % 3) )
1276     {
1277         i_ratio /= 3;
1278         i_dummy /= 3;
1279         i_pgcd  *= 3;
1280     }
1281
1282     while( !(i_ratio % 5) && !(i_dummy % 5) )
1283     {
1284         i_ratio /= 5;
1285         i_dummy /= 5;
1286         i_pgcd  *= 5;
1287     }
1288
1289     return i_pgcd;
1290 }
1291
1292 static void AspectRatio( int i_aspect, int *i_aspect_x, int *i_aspect_y )
1293 {
1294     unsigned int i_pgcd = ReduceHeight( i_aspect );
1295     *i_aspect_x = i_aspect / i_pgcd;
1296     *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
1297 }
1298
1299 /*****************************************************************************
1300  * BinaryLog: computes the base 2 log of a binary value
1301  *****************************************************************************
1302  * This functions is used by MaskToShift, to get a bit index from a binary
1303  * value.
1304  *****************************************************************************/
1305 static int BinaryLog( uint32_t i )
1306 {
1307     int i_log = 0;
1308
1309     if( i == 0 ) return -31337;
1310
1311     if( i & 0xffff0000 ) i_log += 16;
1312     if( i & 0xff00ff00 ) i_log += 8;
1313     if( i & 0xf0f0f0f0 ) i_log += 4;
1314     if( i & 0xcccccccc ) i_log += 2;
1315     if( i & 0xaaaaaaaa ) i_log += 1;
1316
1317     return i_log;
1318 }
1319
1320 /*****************************************************************************
1321  * MaskToShift: transform a color mask into right and left shifts
1322  *****************************************************************************
1323  * This function is used for obtaining color shifts from masks.
1324  *****************************************************************************/
1325 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1326 {
1327     uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
1328
1329     if( !i_mask )
1330     {
1331         *pi_left = *pi_right = 0;
1332         return;
1333     }
1334
1335     /* Get bits */
1336     i_low = i_high = i_mask;
1337
1338     i_low &= - (int32_t)i_low;          /* lower bit of the mask */
1339     i_high += i_low;                    /* higher bit of the mask */
1340
1341     /* Transform bits into an index. Also deal with i_high overflow, which
1342      * is faster than changing the BinaryLog code to handle 64 bit integers. */
1343     i_low =  BinaryLog (i_low);
1344     i_high = i_high ? BinaryLog (i_high) : 32;
1345
1346     /* Update pointers and return */
1347     *pi_left =   i_low;
1348     *pi_right = (8 - i_high + i_low);
1349 }
1350
1351 /*****************************************************************************
1352  * vout_VarCallback: generic callback for intf variables
1353  *****************************************************************************/
1354 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1355                       vlc_value_t oldval, vlc_value_t newval,
1356                       void *p_data )
1357 {
1358     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1359     vlc_value_t val;
1360     (void)psz_variable; (void)newval; (void)oldval; (void)p_data;
1361     val.b_bool = true;
1362     var_Set( p_vout, "intf-change", val );
1363     return VLC_SUCCESS;
1364 }
1365
1366 /*****************************************************************************
1367  * Helper thread for object variables callbacks.
1368  * Only used to avoid deadlocks when using the video embedded mode.
1369  *****************************************************************************/
1370 typedef struct suxor_thread_t
1371 {
1372     VLC_COMMON_MEMBERS
1373     input_thread_t *p_input;
1374
1375 } suxor_thread_t;
1376
1377 static void SuxorRestartVideoES( suxor_thread_t *p_this )
1378 {
1379     vlc_value_t val;
1380
1381     vlc_thread_ready( p_this );
1382
1383     /* Now restart current video stream */
1384     var_Get( p_this->p_input, "video-es", &val );
1385     if( val.i_int >= 0 )
1386     {
1387         vlc_value_t val_es;
1388         val_es.i_int = -VIDEO_ES;
1389         var_Set( p_this->p_input, "video-es", val_es );
1390         var_Set( p_this->p_input, "video-es", val );
1391     }
1392
1393     vlc_object_release( p_this->p_input );
1394
1395     vlc_object_release( p_this );
1396 }
1397
1398 /*****************************************************************************
1399  * object variables callbacks: a bunch of object variables are used by the
1400  * interfaces to interact with the vout.
1401  *****************************************************************************/
1402 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1403                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1404 {
1405     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1406     input_thread_t *p_input;
1407     vlc_value_t val;
1408
1409     char *psz_mode = newval.psz_string;
1410     char *psz_filter, *psz_deinterlace = NULL;
1411     (void)psz_cmd; (void)oldval; (void)p_data;
1412
1413     var_Get( p_vout, "vout-filter", &val );
1414     psz_filter = val.psz_string;
1415     if( psz_filter ) psz_deinterlace = strstr( psz_filter, "deinterlace" );
1416
1417     if( !psz_mode || !*psz_mode )
1418     {
1419         if( psz_deinterlace )
1420         {
1421             char *psz_src = psz_deinterlace + sizeof("deinterlace") - 1;
1422             if( psz_src[0] == ':' ) psz_src++;
1423             memmove( psz_deinterlace, psz_src, strlen(psz_src) + 1 );
1424         }
1425     }
1426     else if( !psz_deinterlace )
1427     {
1428         psz_filter = realloc( psz_filter, strlen( psz_filter ) +
1429                               sizeof(":deinterlace") );
1430         if( psz_filter && *psz_filter ) strcat( psz_filter, ":" );
1431         strcat( psz_filter, "deinterlace" );
1432     }
1433
1434     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1435                                                  FIND_PARENT );
1436     if( !p_input ) return VLC_EGENERIC;
1437
1438     if( psz_mode && *psz_mode )
1439     {
1440         /* Modify input as well because the vout might have to be restarted */
1441         val.psz_string = psz_mode;
1442         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1443         var_Set( p_input, "deinterlace-mode", val );
1444     }
1445     vlc_object_release( p_input );
1446
1447     val.b_bool = true;
1448     var_Set( p_vout, "intf-change", val );
1449
1450     val.psz_string = psz_filter;
1451     var_Set( p_vout, "vout-filter", val );
1452     free( psz_filter );
1453
1454     return VLC_SUCCESS;
1455 }
1456
1457 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1458                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1459 {
1460     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1461     input_thread_t *p_input;
1462     vlc_value_t val;
1463     (void)psz_cmd; (void)oldval; (void)p_data;
1464
1465     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1466                                                  FIND_PARENT );
1467     if (!p_input)
1468     {
1469         msg_Err( p_vout, "Input not found" );
1470         return( VLC_EGENERIC );
1471     }
1472
1473     val.b_bool = true;
1474     var_Set( p_vout, "intf-change", val );
1475
1476     /* Modify input as well because the vout might have to be restarted */
1477     val.psz_string = newval.psz_string;
1478     var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1479
1480     var_Set( p_input, "vout-filter", val );
1481
1482     /* Now restart current video stream */
1483     var_Get( p_input, "video-es", &val );
1484     if( val.i_int >= 0 )
1485     {
1486         suxor_thread_t *p_suxor =
1487             vlc_object_create( p_vout, sizeof(suxor_thread_t) );
1488         p_suxor->p_input = p_input;
1489         p_vout->b_filter_change = true;
1490         vlc_object_yield( p_input );
1491         vlc_thread_create( p_suxor, "suxor", SuxorRestartVideoES,
1492                            VLC_THREAD_PRIORITY_LOW, false );
1493     }
1494
1495     vlc_object_release( p_input );
1496
1497     return VLC_SUCCESS;
1498 }
1499
1500 /*****************************************************************************
1501  * Video Filter2 stuff
1502  *****************************************************************************/
1503 static int VideoFilter2Callback( vlc_object_t *p_this, char const *psz_cmd,
1504                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1505 {
1506     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1507     (void)psz_cmd; (void)oldval; (void)p_data;
1508
1509     vlc_mutex_lock( &p_vout->vfilter_lock );
1510     p_vout->psz_vf2 = strdup( newval.psz_string );
1511     vlc_mutex_unlock( &p_vout->vfilter_lock );
1512
1513     return VLC_SUCCESS;
1514 }
1515
1516 static void DisplayTitleOnOSD( vout_thread_t *p_vout )
1517 {
1518     input_thread_t *p_input;
1519     mtime_t i_now, i_stop;
1520
1521     p_input = (input_thread_t *)vlc_object_find( p_vout,
1522               VLC_OBJECT_INPUT, FIND_ANYWHERE );
1523     if( p_input )
1524     {
1525         i_now = mdate();
1526         i_stop = i_now + (mtime_t)(p_vout->i_title_timeout * 1000);
1527         char *psz_nowplaying =
1528             input_item_GetNowPlaying( input_GetItem( p_input ) );
1529         char *psz_artist = input_item_GetArtist( input_GetItem( p_input ) );
1530         char *psz_name = input_item_GetTitle( input_GetItem( p_input ) );
1531         if( EMPTY_STR( psz_name ) )
1532         {
1533             free( psz_name );
1534             psz_name = input_item_GetName( input_GetItem( p_input ) );
1535         }
1536         if( !EMPTY_STR( psz_nowplaying ) )
1537         {
1538             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1539                                    psz_nowplaying, NULL,
1540                                    p_vout->i_title_position,
1541                                    30 + p_vout->fmt_in.i_width
1542                                       - p_vout->fmt_in.i_visible_width
1543                                       - p_vout->fmt_in.i_x_offset,
1544                                    20 + p_vout->fmt_in.i_y_offset,
1545                                    i_now, i_stop );
1546         }
1547         else if( !EMPTY_STR( psz_artist ) )
1548         {
1549             char *psz_string = NULL;
1550             if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
1551             {
1552                 vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1553                                        psz_string, NULL,
1554                                        p_vout->i_title_position,
1555                                        30 + p_vout->fmt_in.i_width
1556                                           - p_vout->fmt_in.i_visible_width
1557                                           - p_vout->fmt_in.i_x_offset,
1558                                        20 + p_vout->fmt_in.i_y_offset,
1559                                        i_now, i_stop );
1560                 free( psz_string );
1561             }
1562         }
1563         else
1564         {
1565             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1566                                    psz_name, NULL,
1567                                    p_vout->i_title_position,
1568                                    30 + p_vout->fmt_in.i_width
1569                                       - p_vout->fmt_in.i_visible_width
1570                                       - p_vout->fmt_in.i_x_offset,
1571                                    20 + p_vout->fmt_in.i_y_offset,
1572                                    i_now, i_stop );
1573         }
1574         vlc_object_release( p_input );
1575         free( psz_artist );
1576         free( psz_name );
1577         free( psz_nowplaying );
1578     }
1579 }
1580