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