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