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