git.sesse.net Git - vlc/blob - src/video_output/video_output.c

   1 /*****************************************************************************
   2  * video_output.c : video output thread
   3  *
   4  * This module describes the programming interface for video output threads.
   5  * It includes functions allowing to open a new thread, send pictures to a
   6  * thread, and destroy a previously oppened video output thread.
   7  *****************************************************************************
   8  * Copyright (C) 2000-2007 the VideoLAN team
   9  * $Id$
  10  *
  11  * Authors: Vincent Seguin <seguin@via.ecp.fr>
  12  *          Gildas Bazin <gbazin@videolan.org>
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  27  *****************************************************************************/
  28
  29 /*****************************************************************************
  30  * Preamble
  31  *****************************************************************************/
  32 #ifdef HAVE_CONFIG_H
  33 # include "config.h"
  34 #endif
  35
  36 #include <vlc_common.h>
  37
  38 #include <stdlib.h>                                                /* free() */
  39 #include <string.h>
  40
  41
  42 #ifdef HAVE_SYS_TIMES_H
  43 #   include <sys/times.h>
  44 #endif
  45
  46 #include <vlc_vout.h>
  47
  48 #include <vlc_filter.h>
  49 #include <vlc_osd.h>
  50
  51 #if defined( __APPLE__ )
  52 /* Include darwin_specific.h here if needed */
  53 #endif
  54
  55 /** FIXME This is quite ugly but needed while we don't have counters
  56  * helpers */
  57 #include "input/input_internal.h"
  58
  59 #include "modules/modules.h"
  60
  61 /*****************************************************************************
  62  * Local prototypes
  63  *****************************************************************************/
  64 static int      InitThread        ( vout_thread_t * );
  65 static void     RunThread         ( vout_thread_t * );
  66 static void     ErrorThread       ( vout_thread_t * );
  67 static void     EndThread         ( vout_thread_t * );
  68
  69 static void     AspectRatio       ( int, int *, int * );
  70 static int      BinaryLog         ( uint32_t );
  71 static void     MaskToShift       ( int *, int *, uint32_t );
  72
  73 static void     vout_Destructor   ( vlc_object_t * p_this );
  74
  75 /* Object variables callbacks */
  76 static int DeinterlaceCallback( vlc_object_t *, char const *,
  77                                 vlc_value_t, vlc_value_t, void * );
  78 static int FilterCallback( vlc_object_t *, char const *,
  79                            vlc_value_t, vlc_value_t, void * );
  80 static int VideoFilter2Callback( vlc_object_t *, char const *,
  81                                  vlc_value_t, vlc_value_t, void * );
  82
  83 /* From vout_intf.c */
  84 int vout_Snapshot( vout_thread_t *, picture_t * );
  85
  86 /* Display media title in OSD */
  87 static void DisplayTitleOnOSD( vout_thread_t *p_vout );
  88
  89 /*****************************************************************************
  90  * Video Filter2 functions
  91  *****************************************************************************/
  92 static picture_t *video_new_buffer_filter( filter_t *p_filter )
  93 {
  94     picture_t *p_picture;
  95     vout_thread_t *p_vout = (vout_thread_t*)p_filter->p_owner;
  96
  97     p_picture = vout_CreatePicture( p_vout, 0, 0, 0 );
  98
  99     return p_picture;
 100 }
 101
 102 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
 103 {
 104     vout_DestroyPicture( (vout_thread_t*)p_filter->p_owner, p_pic );
 105 }
 106
 107 static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
 108 {
 109     p_filter->pf_vout_buffer_new = video_new_buffer_filter;
 110     p_filter->pf_vout_buffer_del = video_del_buffer_filter;
 111     p_filter->p_owner = p_data; /* p_vout */
 112     return VLC_SUCCESS;
 113 }
 114
 115 /*****************************************************************************
 116  * vout_Request: find a video output thread, create one, or destroy one.
 117  *****************************************************************************
 118  * This function looks for a video output thread matching the current
 119  * properties. If not found, it spawns a new one.
 120  *****************************************************************************/
 121 vout_thread_t *__vout_Request( vlc_object_t *p_this, vout_thread_t *p_vout,
 122                                video_format_t *p_fmt )
 123 {
 124     if( !p_fmt )
 125     {
 126         /* Reattach video output to the instance before bailing out */
 127         if( p_vout )
 128         {
 129             spu_Attach( p_vout->p_spu, p_this, false );
 130             vlc_object_detach( p_vout );
 131             vlc_object_attach( p_vout, p_this->p_libvlc );
 132         }
 133         return NULL;
 134     }
 135
 136     /* If a video output was provided, lock it, otherwise look for one. */
 137     if( p_vout )
 138     {
 139         vlc_object_yield( p_vout );
 140     }
 141     else
 142     {
 143         p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD );
 144
 145         if( !p_vout )
 146         {
 147             p_vout = vlc_object_find( p_this->p_libvlc,
 148                                       VLC_OBJECT_VOUT, FIND_CHILD );
 149             /* only first children of p_input for unused vout */
 150             if( p_vout && p_vout->p_parent != VLC_OBJECT(p_this->p_libvlc) )
 151             {
 152                 vlc_object_release( p_vout );
 153                 p_vout = NULL;
 154             }
 155             if( p_vout )
 156                 vlc_object_detach( p_vout );    /* Remove it from the GC */
 157         }
 158     }
 159
 160     /* If we now have a video output, check it has the right properties */
 161     if( p_vout )
 162     {
 163         char *psz_filter_chain;
 164         vlc_value_t val;
 165
 166         /* We don't directly check for the "vout-filter" variable for obvious
 167          * performance reasons. */
 168         if( p_vout->b_filter_change )
 169         {
 170             var_Get( p_vout, "vout-filter", &val );
 171             psz_filter_chain = val.psz_string;
 172
 173             if( psz_filter_chain && !*psz_filter_chain )
 174             {
 175                 free( psz_filter_chain );
 176                 psz_filter_chain = NULL;
 177             }
 178             if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
 179             {
 180                 free( p_vout->psz_filter_chain );
 181                 p_vout->psz_filter_chain = NULL;
 182             }
 183
 184             if( !psz_filter_chain && !p_vout->psz_filter_chain )
 185             {
 186                 p_vout->b_filter_change = false;
 187             }
 188
 189             free( psz_filter_chain );
 190         }
 191
 192         if( ( p_vout->fmt_render.i_width != p_fmt->i_width ) ||
 193             ( p_vout->fmt_render.i_height != p_fmt->i_height ) ||
 194             ( p_vout->fmt_render.i_aspect != p_fmt->i_aspect ) ||
 195             p_vout->b_filter_change )
 196         {
 197             /* We are not interested in this format, close this vout */
 198             vlc_object_release( p_vout );
 199             vlc_object_release( p_vout );
 200             p_vout = NULL;
 201         }
 202         else
 203         {
 204             /* This video output is cool! Hijack it. */
 205             spu_Attach( p_vout->p_spu, p_this, true );
 206             vlc_object_attach( p_vout, p_this );
 207             if( p_vout->b_title_show )
 208                 DisplayTitleOnOSD( p_vout );
 209             vlc_object_release( p_vout );
 210         }
 211     }
 212
 213     if( !p_vout )
 214     {
 215         msg_Dbg( p_this, "no usable vout present, spawning one" );
 216
 217         p_vout = vout_Create( p_this, p_fmt );
 218     }
 219
 220     return p_vout;
 221 }
 222
 223 /*****************************************************************************
 224  * vout_Create: creates a new video output thread
 225  *****************************************************************************
 226  * This function creates a new video output thread, and returns a pointer
 227  * to its description. On error, it returns NULL.
 228  *****************************************************************************/
 229 vout_thread_t * __vout_Create( vlc_object_t *p_parent, video_format_t *p_fmt )
 230 {
 231     vout_thread_t  * p_vout;                            /* thread descriptor */
 232     input_thread_t * p_input_thread;
 233     int              i_index;                               /* loop variable */
 234     vlc_value_t      val, text;
 235
 236     unsigned int i_width = p_fmt->i_width;
 237     unsigned int i_height = p_fmt->i_height;
 238     vlc_fourcc_t i_chroma = p_fmt->i_chroma;
 239     unsigned int i_aspect = p_fmt->i_aspect;
 240
 241     config_chain_t *p_cfg;
 242     char *psz_parser;
 243     char *psz_name;
 244
 245     /* Allocate descriptor */
 246     static const char typename[] = "video output";
 247     p_vout = vlc_custom_create( p_parent, sizeof( *p_vout ), VLC_OBJECT_VOUT,
 248                                 typename );
 249     if( p_vout == NULL )
 250         return NULL;
 251
 252     /* Initialize pictures - translation tables and functions
 253      * will be initialized later in InitThread */
 254     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
 255     {
 256         p_vout->p_picture[i_index].pf_lock = NULL;
 257         p_vout->p_picture[i_index].pf_unlock = NULL;
 258         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 259         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 260         p_vout->p_picture[i_index].b_slow   = 0;
 261     }
 262
 263     /* No images in the heap */
 264     p_vout->i_heap_size = 0;
 265
 266     /* Initialize the rendering heap */
 267     I_RENDERPICTURES = 0;
 268
 269     vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
 270                  p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 271     p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
 272     p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
 273
 274     p_vout->render.i_width    = i_width;
 275     p_vout->render.i_height   = i_height;
 276     p_vout->render.i_chroma   = i_chroma;
 277     p_vout->render.i_aspect   = i_aspect;
 278
 279     p_vout->render.i_rmask    = 0;
 280     p_vout->render.i_gmask    = 0;
 281     p_vout->render.i_bmask    = 0;
 282
 283     p_vout->render.i_last_used_pic = -1;
 284     p_vout->render.b_allow_modify_pics = 1;
 285
 286     /* Zero the output heap */
 287     I_OUTPUTPICTURES = 0;
 288     p_vout->output.i_width    = 0;
 289     p_vout->output.i_height   = 0;
 290     p_vout->output.i_chroma   = 0;
 291     p_vout->output.i_aspect   = 0;
 292
 293     p_vout->output.i_rmask    = 0;
 294     p_vout->output.i_gmask    = 0;
 295     p_vout->output.i_bmask    = 0;
 296
 297     /* Initialize misc stuff */
 298     p_vout->i_changes    = 0;
 299     p_vout->f_gamma      = 0;
 300     p_vout->b_grayscale  = 0;
 301     p_vout->b_info       = 0;
 302     p_vout->b_interface  = 0;
 303     p_vout->b_scale      = 1;
 304     p_vout->b_fullscreen = 0;
 305     p_vout->i_alignment  = 0;
 306     p_vout->render_time  = 10;
 307     p_vout->c_fps_samples = 0;
 308     p_vout->b_filter_change = 0;
 309     p_vout->pf_control = NULL;
 310     p_vout->p_window = NULL;
 311     p_vout->i_par_num = p_vout->i_par_den = 1;
 312
 313     /* Initialize locks */
 314     vlc_mutex_init( &p_vout->picture_lock );
 315     vlc_mutex_init( &p_vout->change_lock );
 316     vlc_mutex_init( &p_vout->vfilter_lock );
 317
 318     /* Mouse coordinates */
 319     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 320     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 321     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 322     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 323     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 324
 325     /* Initialize subpicture unit */
 326     p_vout->p_spu = spu_Create( p_vout );
 327     spu_Attach( p_vout->p_spu, p_parent, true );
 328
 329     /* Attach the new object now so we can use var inheritance below */
 330     vlc_object_attach( p_vout, p_parent );
 331
 332     spu_Init( p_vout->p_spu );
 333
 334     /* Take care of some "interface/control" related initialisations */
 335     vout_IntfInit( p_vout );
 336
 337     /* If the parent is not a VOUT object, that means we are at the start of
 338      * the video output pipe */
 339     if( p_parent->i_object_type != VLC_OBJECT_VOUT )
 340     {
 341         /* Look for the default filter configuration */
 342         p_vout->psz_filter_chain =
 343             var_CreateGetStringCommand( p_vout, "vout-filter" );
 344
 345         /* Apply video filter2 objects on the first vout */
 346         p_vout->psz_vf2 =
 347             var_CreateGetStringCommand( p_vout, "video-filter" );
 348     }
 349     else
 350     {
 351         /* continue the parent's filter chain */
 352         char *psz_tmp;
 353
 354         /* Ugly hack to jump to our configuration chain */
 355         p_vout->psz_filter_chain
 356             = ((vout_thread_t *)p_parent)->psz_filter_chain;
 357         p_vout->psz_filter_chain
 358             = config_ChainCreate( &psz_tmp, &p_cfg, p_vout->psz_filter_chain );
 359         config_ChainDestroy( p_cfg );
 360         free( psz_tmp );
 361
 362         /* Create a video filter2 var ... but don't inherit values */
 363         var_Create( p_vout, "video-filter",
 364                     VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 365         p_vout->psz_vf2 = var_GetString( p_vout, "video-filter" );
 366     }
 367
 368     var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
 369     p_vout->p_vf2_chain = filter_chain_New( p_vout, "video filter2",
 370         false, video_filter_buffer_allocation_init, NULL, p_vout );
 371
 372     /* Choose the video output module */
 373     if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 374     {
 375         var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 376         var_Get( p_vout, "vout", &val );
 377         psz_parser = val.psz_string;
 378     }
 379     else
 380     {
 381         psz_parser = strdup( p_vout->psz_filter_chain );
 382     }
 383
 384     /* Create the vout thread */
 385     config_ChainCreate( &psz_name, &p_cfg, psz_parser );
 386     free( psz_parser );
 387     p_vout->p_cfg = p_cfg;
 388     p_vout->p_module = module_Need( p_vout,
 389         ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
 390         "video filter" : "video output", psz_name, p_vout->psz_filter_chain && *p_vout->psz_filter_chain );
 391     free( psz_name );
 392
 393     if( p_vout->p_module == NULL )
 394     {
 395         msg_Err( p_vout, "no suitable vout module" );
 396         vlc_object_detach( p_vout );
 397         vlc_object_release( p_vout );
 398         return NULL;
 399     }
 400
 401     /* Create a few object variables for interface interaction */
 402     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
 403     text.psz_string = _("Deinterlace");
 404     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
 405     val.psz_string = (char *)""; text.psz_string = _("Disable");
 406     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 407     val.psz_string = (char *)"discard"; text.psz_string = _("Discard");
 408     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 409     val.psz_string = (char *)"blend"; text.psz_string = _("Blend");
 410     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 411     val.psz_string = (char *)"mean"; text.psz_string = _("Mean");
 412     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 413     val.psz_string = (char *)"bob"; text.psz_string = _("Bob");
 414     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 415     val.psz_string = (char *)"linear"; text.psz_string = _("Linear");
 416     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 417     val.psz_string = (char *)"x"; text.psz_string = (char *)"X";
 418     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 419
 420     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 421     {
 422         var_Set( p_vout, "deinterlace", val );
 423         free( val.psz_string );
 424     }
 425     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 426
 427     var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 428     text.psz_string = _("Filters");
 429     var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
 430     var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
 431
 432     /* Calculate delay created by internal caching */
 433     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 434                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 435     if( p_input_thread )
 436     {
 437         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 438         vlc_object_release( p_input_thread );
 439     }
 440     else
 441     {
 442         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 443     }
 444
 445     if( vlc_thread_create( p_vout, "video output", RunThread,
 446                            VLC_THREAD_PRIORITY_OUTPUT, true ) )
 447     {
 448         module_Unneed( p_vout, p_vout->p_module );
 449         vlc_object_release( p_vout );
 450         return NULL;
 451     }
 452
 453     vlc_object_set_destructor( p_vout, vout_Destructor );
 454
 455     if( p_vout->b_error )
 456     {
 457         msg_Err( p_vout, "video output creation failed" );
 458
 459         /* Make sure the thread is destroyed and data released */
 460         vlc_object_release( p_vout );
 461         return NULL;
 462     }
 463
 464     return p_vout;
 465 }
 466
 467 static void vout_Destructor( vlc_object_t * p_this )
 468 {
 469     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 470
 471     /* Destroy the locks */
 472     vlc_mutex_destroy( &p_vout->picture_lock );
 473     vlc_mutex_destroy( &p_vout->change_lock );
 474     vlc_mutex_destroy( &p_vout->vfilter_lock );
 475
 476     /* Release the module */
 477     if( p_vout->p_module )
 478     {
 479         module_Unneed( p_vout, p_vout->p_module );
 480     }
 481
 482     free( p_vout->psz_filter_chain );
 483
 484     config_ChainDestroy( p_vout->p_cfg );
 485
 486 #ifndef __APPLE__
 487     vout_thread_t *p_another_vout;
 488
 489     /* This is a dirty hack mostly for Linux, where there is no way to get the
 490      * GUI back if you closed it while playing video. This is solved in
 491      * Mac OS X, where we have this novelty called menubar, that will always
 492      * allow you access to the applications main functionality. They should try
 493      * that on linux sometime. */
 494     p_another_vout = vlc_object_find( p_this->p_libvlc,
 495                                       VLC_OBJECT_VOUT, FIND_ANYWHERE );
 496     if( p_another_vout == NULL )
 497         var_SetBool( p_this->p_libvlc, "intf-show", true );
 498     else
 499         vlc_object_release( p_another_vout );
 500 #endif
 501 }
 502
 503 /*****************************************************************************
 504  * InitThread: initialize video output thread
 505  *****************************************************************************
 506  * This function is called from RunThread and performs the second step of the
 507  * initialization. It returns 0 on success. Note that the thread's flag are not
 508  * modified inside this function.
 509  * XXX You have to enter it with change_lock taken.
 510  *****************************************************************************/
 511 static picture_t *get_pic( filter_t *p_filter )
 512 {
 513     picture_t *p_pic = (picture_t *)p_filter->p_owner;
 514     p_filter->p_owner = NULL;
 515     return p_pic;
 516 }
 517
 518 static int InitThread( vout_thread_t *p_vout )
 519 {
 520     int i, i_aspect_x, i_aspect_y;
 521
 522 #ifdef STATS
 523     p_vout->c_loops = 0;
 524 #endif
 525
 526     /* Initialize output method, it allocates direct buffers for us */
 527     if( p_vout->pf_init( p_vout ) )
 528         return VLC_EGENERIC;
 529
 530     if( !I_OUTPUTPICTURES )
 531     {
 532         msg_Err( p_vout, "plugin was unable to allocate at least "
 533                          "one direct buffer" );
 534         p_vout->pf_end( p_vout );
 535         return VLC_EGENERIC;
 536     }
 537
 538     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 539     {
 540         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 541                          "our internal buffers must have overflown." );
 542         p_vout->pf_end( p_vout );
 543         return VLC_EGENERIC;
 544     }
 545
 546     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 547
 548     AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );
 549
 550     msg_Dbg( p_vout, "picture in %ix%i (%i,%i,%ix%i), "
 551              "chroma %4.4s, ar %i:%i, sar %i:%i",
 552              p_vout->fmt_render.i_width, p_vout->fmt_render.i_height,
 553              p_vout->fmt_render.i_x_offset, p_vout->fmt_render.i_y_offset,
 554              p_vout->fmt_render.i_visible_width,
 555              p_vout->fmt_render.i_visible_height,
 556              (char*)&p_vout->fmt_render.i_chroma,
 557              i_aspect_x, i_aspect_y,
 558              p_vout->fmt_render.i_sar_num, p_vout->fmt_render.i_sar_den );
 559
 560     AspectRatio( p_vout->fmt_in.i_aspect, &i_aspect_x, &i_aspect_y );
 561
 562     msg_Dbg( p_vout, "picture user %ix%i (%i,%i,%ix%i), "
 563              "chroma %4.4s, ar %i:%i, sar %i:%i",
 564              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 565              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 566              p_vout->fmt_in.i_visible_width,
 567              p_vout->fmt_in.i_visible_height,
 568              (char*)&p_vout->fmt_in.i_chroma,
 569              i_aspect_x, i_aspect_y,
 570              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 571
 572     if( !p_vout->fmt_out.i_width || !p_vout->fmt_out.i_height )
 573     {
 574         p_vout->fmt_out.i_width = p_vout->fmt_out.i_visible_width =
 575             p_vout->output.i_width;
 576         p_vout->fmt_out.i_height = p_vout->fmt_out.i_visible_height =
 577             p_vout->output.i_height;
 578         p_vout->fmt_out.i_x_offset =  p_vout->fmt_out.i_y_offset = 0;
 579
 580         p_vout->fmt_out.i_aspect = p_vout->output.i_aspect;
 581         p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 582     }
 583     if( !p_vout->fmt_out.i_sar_num || !p_vout->fmt_out.i_sar_num )
 584     {
 585         p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_aspect *
 586             p_vout->fmt_out.i_height;
 587         p_vout->fmt_out.i_sar_den = VOUT_ASPECT_FACTOR *
 588             p_vout->fmt_out.i_width;
 589     }
 590
 591     vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
 592                  p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
 593
 594     AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
 595
 596     msg_Dbg( p_vout, "picture out %ix%i (%i,%i,%ix%i), "
 597              "chroma %4.4s, ar %i:%i, sar %i:%i",
 598              p_vout->fmt_out.i_width, p_vout->fmt_out.i_height,
 599              p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
 600              p_vout->fmt_out.i_visible_width,
 601              p_vout->fmt_out.i_visible_height,
 602              (char*)&p_vout->fmt_out.i_chroma,
 603              i_aspect_x, i_aspect_y,
 604              p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den );
 605
 606     /* Calculate shifts from system-updated masks */
 607     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 608                  p_vout->output.i_rmask );
 609     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 610                  p_vout->output.i_gmask );
 611     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 612                  p_vout->output.i_bmask );
 613
 614     /* Check whether we managed to create direct buffers similar to
 615      * the render buffers, ie same size and chroma */
 616     if( ( p_vout->output.i_width == p_vout->render.i_width )
 617      && ( p_vout->output.i_height == p_vout->render.i_height )
 618      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 619     {
 620         /* Cool ! We have direct buffers, we can ask the decoder to
 621          * directly decode into them ! Map the first render buffers to
 622          * the first direct buffers, but keep the first direct buffer
 623          * for memcpy operations */
 624         p_vout->b_direct = 1;
 625
 626         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 627         {
 628             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 629                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 630                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 631             {
 632                 /* We have enough direct buffers so there's no need to
 633                  * try to use system memory buffers. */
 634                 break;
 635             }
 636             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 637             I_RENDERPICTURES++;
 638         }
 639
 640         msg_Dbg( p_vout, "direct render, mapping "
 641                  "render pictures 0-%i to system pictures 1-%i",
 642                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 643     }
 644     else
 645     {
 646         /* Rats... Something is wrong here, we could not find an output
 647          * plugin able to directly render what we decode. See if we can
 648          * find a chroma plugin to do the conversion */
 649         p_vout->b_direct = 0;
 650
 651         /* Choose the best module */
 652         p_vout->p_chroma = vlc_object_create( p_vout, sizeof(filter_t) );
 653         filter_t *p_chroma = p_vout->p_chroma;
 654         vlc_object_attach( p_chroma, p_vout );
 655         /* TODO: Set the fmt_in and fmt_out stuff here */
 656         p_chroma->fmt_in.video = p_vout->fmt_render;
 657         p_chroma->fmt_out.video = p_vout->fmt_out;
 658
 659         /* TODO: put in a function */
 660         p_chroma->fmt_out.video.i_rmask = p_vout->output.i_rmask;
 661         p_chroma->fmt_out.video.i_gmask = p_vout->output.i_gmask;
 662         p_chroma->fmt_out.video.i_bmask = p_vout->output.i_bmask;
 663         p_chroma->fmt_out.video.i_rrshift = p_vout->output.i_rrshift;
 664         p_chroma->fmt_out.video.i_lrshift = p_vout->output.i_lrshift;
 665         p_chroma->fmt_out.video.i_rgshift = p_vout->output.i_rgshift;
 666         p_chroma->fmt_out.video.i_lgshift = p_vout->output.i_lgshift;
 667         p_chroma->fmt_out.video.i_rbshift = p_vout->output.i_rbshift;
 668         p_chroma->fmt_out.video.i_lbshift = p_vout->output.i_lbshift;
 669         p_chroma->p_module = module_Need( p_chroma, "video filter2", NULL, 0 );
 670
 671         if( p_chroma->p_module == NULL )
 672         {
 673             msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
 674                      (char*)&p_vout->render.i_chroma,
 675                      (char*)&p_vout->output.i_chroma );
 676
 677             vlc_object_release( p_vout->p_chroma );
 678             p_vout->p_chroma = NULL;
 679             p_vout->pf_end( p_vout );
 680             return VLC_EGENERIC;
 681         }
 682         p_chroma->pf_vout_buffer_new = get_pic;
 683
 684         msg_Dbg( p_vout, "indirect render, mapping "
 685                  "render pictures 0-%i to system pictures %i-%i",
 686                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 687                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 688
 689         /* Append render buffers after the direct buffers */
 690         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 691         {
 692             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 693             I_RENDERPICTURES++;
 694
 695             /* Check if we have enough render pictures */
 696             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 697                 break;
 698         }
 699     }
 700
 701     /* Link pictures back to their heap */
 702     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 703     {
 704         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 705     }
 706
 707     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 708     {
 709         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 710     }
 711
 712     return VLC_SUCCESS;
 713 }
 714
 715 /*****************************************************************************
 716  * RunThread: video output thread
 717  *****************************************************************************
 718  * Video output thread. This function does only returns when the thread is
 719  * terminated. It handles the pictures arriving in the video heap and the
 720  * display device events.
 721  *****************************************************************************/
 722 static void RunThread( vout_thread_t *p_vout)
 723 {
 724     int             i_index;                                /* index in heap */
 725     int             i_idle_loops = 0;  /* loops without displaying a picture */
 726     mtime_t         current_date;                            /* current date */
 727     mtime_t         display_date;                            /* display date */
 728
 729     picture_t *     p_picture;                            /* picture pointer */
 730     picture_t *     p_last_picture = NULL;                   /* last picture */
 731     picture_t *     p_directbuffer;              /* direct buffer to display */
 732
 733     subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
 734
 735     input_thread_t *p_input = NULL ;           /* Parent input, if it exists */
 736
 737     vlc_value_t     val;
 738     bool      b_drop_late;
 739
 740     int             i_displayed = 0, i_lost = 0, i_loops = 0;
 741
 742     /*
 743      * Initialize thread
 744      */
 745     vlc_mutex_lock( &p_vout->change_lock );
 746     p_vout->b_error = InitThread( p_vout );
 747
 748     var_Create( p_vout, "drop-late-frames", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 749     var_Get( p_vout, "drop-late-frames", &val );
 750     b_drop_late = val.b_bool;
 751
 752     /* signal the creation of the vout */
 753     vlc_thread_ready( p_vout );
 754
 755     if( p_vout->b_error )
 756     {
 757         vlc_mutex_unlock( &p_vout->change_lock );
 758         return;
 759     }
 760
 761     vlc_object_lock( p_vout );
 762
 763     if( p_vout->b_title_show )
 764         DisplayTitleOnOSD( p_vout );
 765
 766     /*
 767      * Main loop - it is not executed if an error occurred during
 768      * initialization
 769      */
 770     while( (vlc_object_alive( p_vout )) && (!p_vout->b_error) )
 771     {
 772         /* Initialize loop variables */
 773         p_picture = NULL;
 774         display_date = 0;
 775         current_date = mdate();
 776
 777         i_loops++;
 778             if( !p_input )
 779             {
 780                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 781                                            FIND_PARENT );
 782             }
 783             if( p_input )
 784             {
 785                 vlc_mutex_lock( &p_input->p->counters.counters_lock );
 786                 stats_UpdateInteger( p_vout, p_input->p->counters.p_lost_pictures,
 787                                      i_lost , NULL);
 788                 stats_UpdateInteger( p_vout,
 789                                      p_input->p->counters.p_displayed_pictures,
 790                                      i_displayed , NULL);
 791                 i_displayed = i_lost = 0;
 792                 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 793                 vlc_object_release( p_input );
 794                 p_input = NULL;
 795             }
 796 #if 0
 797         p_vout->c_loops++;
 798         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 799         {
 800             msg_Dbg( p_vout, "picture heap: %d/%d",
 801                      I_RENDERPICTURES, p_vout->i_heap_size );
 802         }
 803 #endif
 804
 805         /*
 806          * Find the picture to display (the one with the earliest date).
 807          * This operation does not need lock, since only READY_PICTUREs
 808          * are handled. */
 809         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 810         {
 811             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 812                 && ( (p_picture == NULL) ||
 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         if( p_picture )
 821         {
 822             /* If we met the last picture, parse again to see whether there is
 823              * a more appropriate one. */
 824             if( p_picture == p_last_picture )
 825             {
 826                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 827                 {
 828                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 829                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 830                         && ((p_picture == p_last_picture) ||
 831                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 832                     {
 833                         p_picture = PP_RENDERPICTURE[i_index];
 834                         display_date = p_picture->date;
 835                     }
 836                 }
 837             }
 838
 839             /* If we found better than the last picture, destroy it */
 840             if( p_last_picture && p_picture != p_last_picture )
 841             {
 842                 vlc_mutex_lock( &p_vout->picture_lock );
 843                 if( p_last_picture->i_refcount )
 844                 {
 845                     p_last_picture->i_status = DISPLAYED_PICTURE;
 846                 }
 847                 else
 848                 {
 849                     p_last_picture->i_status = DESTROYED_PICTURE;
 850                     p_vout->i_heap_size--;
 851                 }
 852                 vlc_mutex_unlock( &p_vout->picture_lock );
 853                 p_last_picture = NULL;
 854             }
 855
 856             /* Compute FPS rate */
 857             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 858                 = display_date;
 859
 860             if( !p_picture->b_force &&
 861                 p_picture != p_last_picture &&
 862                 display_date < current_date + p_vout->render_time &&
 863                 b_drop_late )
 864             {
 865                 /* Picture is late: it will be destroyed and the thread
 866                  * will directly choose the next picture */
 867                 vlc_mutex_lock( &p_vout->picture_lock );
 868                 if( p_picture->i_refcount )
 869                 {
 870                     /* Pretend we displayed the picture, but don't destroy
 871                      * it since the decoder might still need it. */
 872                     p_picture->i_status = DISPLAYED_PICTURE;
 873                 }
 874                 else
 875                 {
 876                     /* Destroy the picture without displaying it */
 877                     p_picture->i_status = DESTROYED_PICTURE;
 878                     p_vout->i_heap_size--;
 879                 }
 880                 msg_Warn( p_vout, "late picture skipped (%"PRId64")",
 881                                   current_date - display_date );
 882                 i_lost++;
 883                 vlc_mutex_unlock( &p_vout->picture_lock );
 884
 885                 continue;
 886             }
 887
 888             if( display_date >
 889                 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
 890             {
 891                 /* Picture is waaay too early: it will be destroyed */
 892                 vlc_mutex_lock( &p_vout->picture_lock );
 893                 if( p_picture->i_refcount )
 894                 {
 895                     /* Pretend we displayed the picture, but don't destroy
 896                      * it since the decoder might still need it. */
 897                     p_picture->i_status = DISPLAYED_PICTURE;
 898                 }
 899                 else
 900                 {
 901                     /* Destroy the picture without displaying it */
 902                     p_picture->i_status = DESTROYED_PICTURE;
 903                     p_vout->i_heap_size--;
 904                 }
 905                 i_lost++;
 906                 msg_Warn( p_vout, "vout warning: early picture skipped "
 907                           "(%"PRId64")", display_date - current_date
 908                           - p_vout->i_pts_delay );
 909                 vlc_mutex_unlock( &p_vout->picture_lock );
 910
 911                 continue;
 912             }
 913
 914             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 915             {
 916                 /* A picture is ready to be rendered, but its rendering date
 917                  * is far from the current one so the thread will perform an
 918                  * empty loop as if no picture were found. The picture state
 919                  * is unchanged */
 920                 p_picture    = NULL;
 921                 display_date = 0;
 922             }
 923             else if( p_picture == p_last_picture )
 924             {
 925                 /* We are asked to repeat the previous picture, but we first
 926                  * wait for a couple of idle loops */
 927                 if( i_idle_loops < 4 )
 928                 {
 929                     p_picture    = NULL;
 930                     display_date = 0;
 931                 }
 932                 else
 933                 {
 934                     /* We set the display date to something high, otherwise
 935                      * we'll have lots of problems with late pictures */
 936                     display_date = current_date + p_vout->render_time;
 937                 }
 938             }
 939         }
 940
 941         if( p_picture == NULL )
 942         {
 943             i_idle_loops++;
 944         }
 945
 946         /* Video Filter2 stuff */
 947         if( p_vout->psz_vf2 )
 948         {
 949             es_format_t fmt;
 950
 951             vlc_mutex_lock( &p_vout->vfilter_lock );
 952
 953             es_format_Init( &fmt, VIDEO_ES, p_vout->fmt_render.i_chroma );
 954             fmt.video = p_vout->fmt_render;
 955             filter_chain_Reset( p_vout->p_vf2_chain, &fmt, &fmt );
 956
 957             if( filter_chain_AppendFromString( p_vout->p_vf2_chain,
 958                                                p_vout->psz_vf2 ) < 0 )
 959                 msg_Err( p_vout, "Video filter chain creation failed" );
 960
 961             free( p_vout->psz_vf2 );
 962             p_vout->psz_vf2 = NULL;
 963             vlc_mutex_unlock( &p_vout->vfilter_lock );
 964         }
 965
 966         if( p_picture )
 967         {
 968             p_picture = filter_chain_VideoFilter( p_vout->p_vf2_chain,
 969                                                   p_picture );
 970         }
 971
 972         if( p_picture && p_vout->b_snapshot )
 973         {
 974             p_vout->b_snapshot = false;
 975             vout_Snapshot( p_vout, p_picture );
 976         }
 977
 978         /*
 979          * Check for subpictures to display
 980          */
 981         if( display_date > 0 )
 982         {
 983             if( !p_input )
 984             {
 985                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 986                                            FIND_PARENT );
 987             }
 988             p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date,
 989             p_input ? var_GetBool( p_input, "state" ) == PAUSE_S : false );
 990             if( p_input )
 991                 vlc_object_release( p_input );
 992             p_input = NULL;
 993         }
 994
 995         /*
 996          * Perform rendering
 997          */
 998         i_displayed++;
 999         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
1000
1001         /*
1002          * Call the plugin-specific rendering method if there is one
1003          */
1004         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
1005         {
1006             /* Render the direct buffer returned by vout_RenderPicture */
1007             p_vout->pf_render( p_vout, p_directbuffer );
1008         }
1009
1010         /*
1011          * Sleep, wake up
1012          */
1013         if( display_date != 0 && p_directbuffer != NULL )
1014         {
1015             mtime_t current_render_time = mdate() - current_date;
1016             /* if render time is very large we don't include it in the mean */
1017             if( current_render_time < p_vout->render_time +
1018                 VOUT_DISPLAY_DELAY )
1019             {
1020                 /* Store render time using a sliding mean weighting to
1021                  * current value in a 3 to 1 ratio*/
1022                 p_vout->render_time *= 3;
1023                 p_vout->render_time += current_render_time;
1024                 p_vout->render_time >>= 2;
1025             }
1026         }
1027
1028         /* Give back change lock */
1029         vlc_mutex_unlock( &p_vout->change_lock );
1030
1031         vlc_object_unlock( p_vout );
1032
1033         /* Sleep a while or until a given date */
1034         if( display_date != 0 )
1035         {
1036             /* If there are filters in the chain, better give them the picture
1037              * in advance */
1038             if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
1039             {
1040                 mwait( display_date - VOUT_MWAIT_TOLERANCE );
1041             }
1042         }
1043         else
1044         {
1045             msleep( VOUT_IDLE_SLEEP );
1046         }
1047
1048         /* On awakening, take back lock and send immediately picture
1049          * to display. */
1050         vlc_object_lock( p_vout );
1051         /* Note: vlc_object_alive() could be false here, and we
1052          * could be dead */
1053         vlc_mutex_lock( &p_vout->change_lock );
1054
1055         /*
1056          * Display the previously rendered picture
1057          */
1058         if( p_picture != NULL && p_directbuffer != NULL )
1059         {
1060             /* Display the direct buffer returned by vout_RenderPicture */
1061             if( p_vout->pf_display )
1062             {
1063                 p_vout->pf_display( p_vout, p_directbuffer );
1064             }
1065
1066             /* Tell the vout this was the last picture and that it does not
1067              * need to be forced anymore. */
1068             p_last_picture = p_picture;
1069             p_last_picture->b_force = 0;
1070         }
1071
1072         if( p_picture != NULL )
1073         {
1074             /* Reinitialize idle loop count */
1075             i_idle_loops = 0;
1076         }
1077
1078         /*
1079          * Check events and manage thread
1080          */
1081         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
1082         {
1083             /* A fatal error occurred, and the thread must terminate
1084              * immediately, without displaying anything - setting b_error to 1
1085              * causes the immediate end of the main while() loop. */
1086             // FIXME pf_end
1087             p_vout->b_error = 1;
1088         }
1089
1090         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
1091         {
1092             /* this must only happen when the vout plugin is incapable of
1093              * rescaling the picture itself. In this case we need to destroy
1094              * the current picture buffers and recreate new ones with the right
1095              * dimensions */
1096             int i;
1097
1098             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
1099
1100             p_vout->pf_end( p_vout );
1101             for( i = 0; i < I_OUTPUTPICTURES; i++ )
1102                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
1103
1104             I_OUTPUTPICTURES = 0;
1105             if( p_vout->pf_init( p_vout ) )
1106             {
1107                 msg_Err( p_vout, "cannot resize display" );
1108                 /* FIXME: pf_end will be called again in EndThread() */
1109                 p_vout->b_error = 1;
1110             }
1111
1112             /* Need to reinitialise the chroma plugin. Since we might need
1113              * resizing too and it's not sure that we already had it,
1114              * recreate the chroma plugin chain from scratch. */
1115             /* dionoea */
1116             if( p_vout->p_chroma->p_module )
1117             {
1118                 filter_t *p_chroma = p_vout->p_chroma;
1119                 module_Unneed( p_chroma, p_chroma->p_module );
1120                 p_chroma->fmt_out.video = p_vout->fmt_out;
1121                 p_chroma->fmt_out.video.i_rmask = p_vout->output.i_rmask;
1122                 p_chroma->fmt_out.video.i_gmask = p_vout->output.i_gmask;
1123                 p_chroma->fmt_out.video.i_bmask = p_vout->output.i_bmask;
1124                 p_chroma->fmt_out.video.i_rrshift = p_vout->output.i_rrshift;
1125                 p_chroma->fmt_out.video.i_lrshift = p_vout->output.i_lrshift;
1126                 p_chroma->fmt_out.video.i_rgshift = p_vout->output.i_rgshift;
1127                 p_chroma->fmt_out.video.i_lgshift = p_vout->output.i_lgshift;
1128                 p_chroma->fmt_out.video.i_rbshift = p_vout->output.i_rbshift;
1129                 p_chroma->fmt_out.video.i_lbshift = p_vout->output.i_lbshift;
1130                 p_chroma->p_module = module_Need( p_chroma, "video filter2", NULL, 0 );
1131                 if( !p_chroma->p_module )
1132                 {
1133                     msg_Err( p_vout, "WOW THIS SUCKS BIG TIME!!!!!" );
1134                 }
1135             }
1136         }
1137
1138         if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1139         {
1140             /* This happens when the picture buffers need to be recreated.
1141              * This is useful on multimonitor displays for instance.
1142              *
1143              * Warning: This only works when the vout creates only 1 picture
1144              * buffer!! */
1145             p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1146
1147             if( !p_vout->b_direct )
1148             {
1149                 module_Unneed( p_vout->p_chroma, p_vout->p_chroma->p_module );
1150                 vlc_object_detach( p_vout->p_chroma );
1151                 vlc_object_release( p_vout->p_chroma );
1152                 p_vout->p_chroma = NULL;
1153             }
1154
1155             vlc_mutex_lock( &p_vout->picture_lock );
1156
1157             p_vout->pf_end( p_vout );
1158
1159             I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1160
1161             vlc_mutex_lock( &p_vout->change_lock ); // FIXME is that valid ?
1162             p_vout->b_error = InitThread( p_vout );
1163
1164             vlc_mutex_unlock( &p_vout->picture_lock );
1165         }
1166     }
1167
1168
1169     if( p_input )
1170     {
1171         vlc_object_release( p_input );
1172     }
1173
1174     /*
1175      * Error loop - wait until the thread destruction is requested
1176      */
1177     if( p_vout->b_error )
1178     {
1179         ErrorThread( p_vout );
1180     }
1181
1182     /* End of thread */
1183     EndThread( p_vout );
1184     vlc_mutex_unlock( &p_vout->change_lock );
1185
1186     vlc_object_unlock( p_vout );
1187 }
1188
1189 /*****************************************************************************
1190  * ErrorThread: RunThread() error loop
1191  *****************************************************************************
1192  * This function is called when an error occurred during thread main's loop.
1193  * The thread can still receive feed, but must be ready to terminate as soon
1194  * as possible.
1195  *****************************************************************************/
1196 static void ErrorThread( vout_thread_t *p_vout )
1197 {
1198     /* Wait until a `die' order */
1199     while( !p_vout->b_die )
1200     {
1201         /* Sleep a while */
1202         msleep( VOUT_IDLE_SLEEP );
1203     }
1204 }
1205
1206 /*****************************************************************************
1207  * EndThread: thread destruction
1208  *****************************************************************************
1209  * This function is called when the thread ends after a sucessful
1210  * initialization. It frees all resources allocated by InitThread.
1211  * XXX You have to enter it with change_lock taken.
1212  *****************************************************************************/
1213 static void EndThread( vout_thread_t *p_vout )
1214 {
1215     int     i_index;                                        /* index in heap */
1216
1217 #ifdef STATS
1218     {
1219         struct tms cpu_usage;
1220         times( &cpu_usage );
1221
1222         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1223                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1224     }
1225 #endif
1226
1227     if( !p_vout->b_direct )
1228     {
1229         module_Unneed( p_vout->p_chroma, p_vout->p_chroma->p_module );
1230         vlc_object_release( p_vout->p_chroma );
1231         p_vout->p_chroma = NULL;
1232     }
1233
1234     /* Destroy all remaining pictures */
1235     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1236     {
1237         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1238         {
1239             free( p_vout->p_picture[i_index].p_data_orig );
1240         }
1241     }
1242
1243     /* Destroy subpicture unit */
1244     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), false );
1245     spu_Destroy( p_vout->p_spu );
1246
1247     /* Destroy the video filters2 */
1248     filter_chain_Delete( p_vout->p_vf2_chain );
1249
1250     /* Destroy translation tables FIXME if b_error is set, it can already be done */
1251     p_vout->pf_end( p_vout );
1252 }
1253
1254 /* following functions are local */
1255
1256 static int ReduceHeight( int i_ratio )
1257 {
1258     int i_dummy = VOUT_ASPECT_FACTOR;
1259     int i_pgcd  = 1;
1260
1261     if( !i_ratio )
1262     {
1263         return i_pgcd;
1264     }
1265
1266     /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1267     while( !(i_ratio & 1) && !(i_dummy & 1) )
1268     {
1269         i_ratio >>= 1;
1270         i_dummy >>= 1;
1271         i_pgcd  <<= 1;
1272     }
1273
1274     while( !(i_ratio % 3) && !(i_dummy % 3) )
1275     {
1276         i_ratio /= 3;
1277         i_dummy /= 3;
1278         i_pgcd  *= 3;
1279     }
1280
1281     while( !(i_ratio % 5) && !(i_dummy % 5) )
1282     {
1283         i_ratio /= 5;
1284         i_dummy /= 5;
1285         i_pgcd  *= 5;
1286     }
1287
1288     return i_pgcd;
1289 }
1290
1291 static void AspectRatio( int i_aspect, int *i_aspect_x, int *i_aspect_y )
1292 {
1293     unsigned int i_pgcd = ReduceHeight( i_aspect );
1294     *i_aspect_x = i_aspect / i_pgcd;
1295     *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
1296 }
1297
1298 /*****************************************************************************
1299  * BinaryLog: computes the base 2 log of a binary value
1300  *****************************************************************************
1301  * This functions is used by MaskToShift, to get a bit index from a binary
1302  * value.
1303  *****************************************************************************/
1304 static int BinaryLog( uint32_t i )
1305 {
1306     int i_log = 0;
1307
1308     if( i == 0 ) return -31337;
1309
1310     if( i & 0xffff0000 ) i_log += 16;
1311     if( i & 0xff00ff00 ) i_log += 8;
1312     if( i & 0xf0f0f0f0 ) i_log += 4;
1313     if( i & 0xcccccccc ) i_log += 2;
1314     if( i & 0xaaaaaaaa ) i_log += 1;
1315
1316     return i_log;
1317 }
1318
1319 /*****************************************************************************
1320  * MaskToShift: transform a color mask into right and left shifts
1321  *****************************************************************************
1322  * This function is used for obtaining color shifts from masks.
1323  *****************************************************************************/
1324 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1325 {
1326     uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
1327
1328     if( !i_mask )
1329     {
1330         *pi_left = *pi_right = 0;
1331         return;
1332     }
1333
1334     /* Get bits */
1335     i_low = i_high = i_mask;
1336
1337     i_low &= - (int32_t)i_low;          /* lower bit of the mask */
1338     i_high += i_low;                    /* higher bit of the mask */
1339
1340     /* Transform bits into an index. Also deal with i_high overflow, which
1341      * is faster than changing the BinaryLog code to handle 64 bit integers. */
1342     i_low =  BinaryLog (i_low);
1343     i_high = i_high ? BinaryLog (i_high) : 32;
1344
1345     /* Update pointers and return */
1346     *pi_left =   i_low;
1347     *pi_right = (8 - i_high + i_low);
1348 }
1349
1350 /*****************************************************************************
1351  * vout_VarCallback: generic callback for intf variables
1352  *****************************************************************************/
1353 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1354                       vlc_value_t oldval, vlc_value_t newval,
1355                       void *p_data )
1356 {
1357     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1358     vlc_value_t val;
1359     (void)psz_variable; (void)newval; (void)oldval; (void)p_data;
1360     val.b_bool = true;
1361     var_Set( p_vout, "intf-change", val );
1362     return VLC_SUCCESS;
1363 }
1364
1365 /*****************************************************************************
1366  * Helper thread for object variables callbacks.
1367  * Only used to avoid deadlocks when using the video embedded mode.
1368  *****************************************************************************/
1369 typedef struct suxor_thread_t
1370 {
1371     VLC_COMMON_MEMBERS
1372     input_thread_t *p_input;
1373
1374 } suxor_thread_t;
1375
1376 static void SuxorRestartVideoES( suxor_thread_t *p_this )
1377 {
1378     vlc_value_t val;
1379
1380     vlc_thread_ready( p_this );
1381
1382     /* Now restart current video stream */
1383     var_Get( p_this->p_input, "video-es", &val );
1384     if( val.i_int >= 0 )
1385     {
1386         vlc_value_t val_es;
1387         val_es.i_int = -VIDEO_ES;
1388         var_Set( p_this->p_input, "video-es", val_es );
1389         var_Set( p_this->p_input, "video-es", val );
1390     }
1391
1392     vlc_object_release( p_this->p_input );
1393
1394     vlc_object_release( p_this );
1395 }
1396
1397 /*****************************************************************************
1398  * object variables callbacks: a bunch of object variables are used by the
1399  * interfaces to interact with the vout.
1400  *****************************************************************************/
1401 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1402                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1403 {
1404     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1405     input_thread_t *p_input;
1406     vlc_value_t val;
1407
1408     char *psz_mode = newval.psz_string;
1409     char *psz_filter, *psz_deinterlace = NULL;
1410     (void)psz_cmd; (void)oldval; (void)p_data;
1411
1412     var_Get( p_vout, "vout-filter", &val );
1413     psz_filter = val.psz_string;
1414     if( psz_filter ) psz_deinterlace = strstr( psz_filter, "deinterlace" );
1415
1416     if( !psz_mode || !*psz_mode )
1417     {
1418         if( psz_deinterlace )
1419         {
1420             char *psz_src = psz_deinterlace + sizeof("deinterlace") - 1;
1421             if( psz_src[0] == ':' ) psz_src++;
1422             memmove( psz_deinterlace, psz_src, strlen(psz_src) + 1 );
1423         }
1424     }
1425     else if( !psz_deinterlace )
1426     {
1427         psz_filter = realloc( psz_filter, strlen( psz_filter ) +
1428                               sizeof(":deinterlace") );
1429         if( psz_filter && *psz_filter ) strcat( psz_filter, ":" );
1430         strcat( psz_filter, "deinterlace" );
1431     }
1432
1433     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1434                                                  FIND_PARENT );
1435     if( !p_input ) return VLC_EGENERIC;
1436
1437     if( psz_mode && *psz_mode )
1438     {
1439         /* Modify input as well because the vout might have to be restarted */
1440         val.psz_string = psz_mode;
1441         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1442         var_Set( p_input, "deinterlace-mode", val );
1443     }
1444     vlc_object_release( p_input );
1445
1446     val.b_bool = true;
1447     var_Set( p_vout, "intf-change", val );
1448
1449     val.psz_string = psz_filter;
1450     var_Set( p_vout, "vout-filter", val );
1451     free( psz_filter );
1452
1453     return VLC_SUCCESS;
1454 }
1455
1456 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1457                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1458 {
1459     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1460     input_thread_t *p_input;
1461     vlc_value_t val;
1462     (void)psz_cmd; (void)oldval; (void)p_data;
1463
1464     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1465                                                  FIND_PARENT );
1466     if (!p_input)
1467     {
1468         msg_Err( p_vout, "Input not found" );
1469         return( VLC_EGENERIC );
1470     }
1471
1472     val.b_bool = true;
1473     var_Set( p_vout, "intf-change", val );
1474
1475     /* Modify input as well because the vout might have to be restarted */
1476     val.psz_string = newval.psz_string;
1477     var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1478
1479     var_Set( p_input, "vout-filter", val );
1480
1481     /* Now restart current video stream */
1482     var_Get( p_input, "video-es", &val );
1483     if( val.i_int >= 0 )
1484     {
1485         suxor_thread_t *p_suxor =
1486             vlc_object_create( p_vout, sizeof(suxor_thread_t) );
1487         p_suxor->p_input = p_input;
1488         p_vout->b_filter_change = true;
1489         vlc_object_yield( p_input );
1490         vlc_thread_create( p_suxor, "suxor", SuxorRestartVideoES,
1491                            VLC_THREAD_PRIORITY_LOW, false );
1492     }
1493
1494     vlc_object_release( p_input );
1495
1496     return VLC_SUCCESS;
1497 }
1498
1499 /*****************************************************************************
1500  * Video Filter2 stuff
1501  *****************************************************************************/
1502 static int VideoFilter2Callback( vlc_object_t *p_this, char const *psz_cmd,
1503                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1504 {
1505     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1506     (void)psz_cmd; (void)oldval; (void)p_data;
1507
1508     vlc_mutex_lock( &p_vout->vfilter_lock );
1509     p_vout->psz_vf2 = strdup( newval.psz_string );
1510     vlc_mutex_unlock( &p_vout->vfilter_lock );
1511
1512     return VLC_SUCCESS;
1513 }
1514
1515 static void DisplayTitleOnOSD( vout_thread_t *p_vout )
1516 {
1517     input_thread_t *p_input;
1518     mtime_t i_now, i_stop;
1519
1520     p_input = (input_thread_t *)vlc_object_find( p_vout,
1521               VLC_OBJECT_INPUT, FIND_ANYWHERE );
1522     if( p_input )
1523     {
1524         i_now = mdate();
1525         i_stop = i_now + (mtime_t)(p_vout->i_title_timeout * 1000);
1526         char *psz_nowplaying =
1527             input_item_GetNowPlaying( input_GetItem( p_input ) );
1528         char *psz_artist = input_item_GetArtist( input_GetItem( p_input ) );
1529         char *psz_name = input_item_GetTitle( input_GetItem( p_input ) );
1530         if( EMPTY_STR( psz_name ) )
1531         {
1532             free( psz_name );
1533             psz_name = input_item_GetName( input_GetItem( p_input ) );
1534         }
1535         if( !EMPTY_STR( psz_nowplaying ) )
1536         {
1537             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1538                                    psz_nowplaying, NULL,
1539                                    p_vout->i_title_position,
1540                                    30 + p_vout->fmt_in.i_width
1541                                       - p_vout->fmt_in.i_visible_width
1542                                       - p_vout->fmt_in.i_x_offset,
1543                                    20 + p_vout->fmt_in.i_y_offset,
1544                                    i_now, i_stop );
1545         }
1546         else if( !EMPTY_STR( psz_artist ) )
1547         {
1548             char *psz_string = NULL;
1549             if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
1550             {
1551                 vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1552                                        psz_string, NULL,
1553                                        p_vout->i_title_position,
1554                                        30 + p_vout->fmt_in.i_width
1555                                           - p_vout->fmt_in.i_visible_width
1556                                           - p_vout->fmt_in.i_x_offset,
1557                                        20 + p_vout->fmt_in.i_y_offset,
1558                                        i_now, i_stop );
1559                 free( psz_string );
1560             }
1561         }
1562         else
1563         {
1564             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1565                                    psz_name, NULL,
1566                                    p_vout->i_title_position,
1567                                    30 + p_vout->fmt_in.i_width
1568                                       - p_vout->fmt_in.i_visible_width
1569                                       - p_vout->fmt_in.i_x_offset,
1570                                    20 + p_vout->fmt_in.i_y_offset,
1571                                    i_now, i_stop );
1572         }
1573         vlc_object_release( p_input );
1574         free( psz_artist );
1575         free( psz_name );
1576         free( psz_nowplaying );
1577     }
1578 }
1579