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     {
 249         msg_Err( p_parent, "out of memory" );
 250         return NULL;
 251     }
 252
 253     /* Initialize pictures - translation tables and functions
 254      * will be initialized later in InitThread */
 255     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
 256     {
 257         p_vout->p_picture[i_index].pf_lock = NULL;
 258         p_vout->p_picture[i_index].pf_unlock = NULL;
 259         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 260         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 261         p_vout->p_picture[i_index].b_slow   = 0;
 262     }
 263
 264     /* No images in the heap */
 265     p_vout->i_heap_size = 0;
 266
 267     /* Initialize the rendering heap */
 268     I_RENDERPICTURES = 0;
 269
 270     vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
 271                  p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 272     p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
 273     p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
 274
 275     p_vout->render.i_width    = i_width;
 276     p_vout->render.i_height   = i_height;
 277     p_vout->render.i_chroma   = i_chroma;
 278     p_vout->render.i_aspect   = i_aspect;
 279
 280     p_vout->render.i_rmask    = 0;
 281     p_vout->render.i_gmask    = 0;
 282     p_vout->render.i_bmask    = 0;
 283
 284     p_vout->render.i_last_used_pic = -1;
 285     p_vout->render.b_allow_modify_pics = 1;
 286
 287     /* Zero the output heap */
 288     I_OUTPUTPICTURES = 0;
 289     p_vout->output.i_width    = 0;
 290     p_vout->output.i_height   = 0;
 291     p_vout->output.i_chroma   = 0;
 292     p_vout->output.i_aspect   = 0;
 293
 294     p_vout->output.i_rmask    = 0;
 295     p_vout->output.i_gmask    = 0;
 296     p_vout->output.i_bmask    = 0;
 297
 298     /* Initialize misc stuff */
 299     p_vout->i_changes    = 0;
 300     p_vout->f_gamma      = 0;
 301     p_vout->b_grayscale  = 0;
 302     p_vout->b_info       = 0;
 303     p_vout->b_interface  = 0;
 304     p_vout->b_scale      = 1;
 305     p_vout->b_fullscreen = 0;
 306     p_vout->i_alignment  = 0;
 307     p_vout->render_time  = 10;
 308     p_vout->c_fps_samples = 0;
 309     p_vout->b_filter_change = 0;
 310     p_vout->pf_control = 0;
 311     p_vout->p_parent_intf = 0;
 312     p_vout->i_par_num = p_vout->i_par_den = 1;
 313
 314     /* Initialize locks */
 315     vlc_mutex_init( &p_vout->picture_lock );
 316     vlc_mutex_init( &p_vout->change_lock );
 317     vlc_mutex_init( &p_vout->vfilter_lock );
 318
 319     /* Mouse coordinates */
 320     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 321     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 322     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 323     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 324     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 325
 326     /* Initialize subpicture unit */
 327     p_vout->p_spu = spu_Create( p_vout );
 328     spu_Attach( p_vout->p_spu, p_parent, true );
 329
 330     /* Attach the new object now so we can use var inheritance below */
 331     vlc_object_attach( p_vout, p_parent );
 332
 333     spu_Init( p_vout->p_spu );
 334
 335     /* Take care of some "interface/control" related initialisations */
 336     vout_IntfInit( p_vout );
 337
 338     /* If the parent is not a VOUT object, that means we are at the start of
 339      * the video output pipe */
 340     if( p_parent->i_object_type != VLC_OBJECT_VOUT )
 341     {
 342         /* Look for the default filter configuration */
 343         p_vout->psz_filter_chain =
 344             var_CreateGetStringCommand( p_vout, "vout-filter" );
 345
 346         /* Apply video filter2 objects on the first vout */
 347         p_vout->psz_vf2 =
 348             var_CreateGetStringCommand( p_vout, "video-filter" );
 349     }
 350     else
 351     {
 352         /* continue the parent's filter chain */
 353         char *psz_tmp;
 354
 355         /* Ugly hack to jump to our configuration chain */
 356         p_vout->psz_filter_chain
 357             = ((vout_thread_t *)p_parent)->psz_filter_chain;
 358         p_vout->psz_filter_chain
 359             = config_ChainCreate( &psz_tmp, &p_cfg, p_vout->psz_filter_chain );
 360         config_ChainDestroy( p_cfg );
 361         free( psz_tmp );
 362
 363         /* Create a video filter2 var ... but don't inherit values */
 364         var_Create( p_vout, "video-filter",
 365                     VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 366         p_vout->psz_vf2 = var_GetString( p_vout, "video-filter" );
 367     }
 368
 369     var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
 370     p_vout->p_vf2_chain = filter_chain_New( p_vout, "video filter2",
 371         false, video_filter_buffer_allocation_init, NULL, p_vout );
 372
 373     /* Choose the video output module */
 374     if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 375     {
 376         var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 377         var_Get( p_vout, "vout", &val );
 378         psz_parser = val.psz_string;
 379     }
 380     else
 381     {
 382         psz_parser = strdup( p_vout->psz_filter_chain );
 383     }
 384
 385     /* Create the vout thread */
 386     config_ChainCreate( &psz_name, &p_cfg, psz_parser );
 387     free( psz_parser );
 388     p_vout->p_cfg = p_cfg;
 389     p_vout->p_module = module_Need( p_vout,
 390         ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
 391         "video filter" : "video output", psz_name, p_vout->psz_filter_chain && *p_vout->psz_filter_chain );
 392     free( psz_name );
 393
 394     if( p_vout->p_module == NULL )
 395     {
 396         msg_Err( p_vout, "no suitable vout module" );
 397         vlc_object_detach( p_vout );
 398         vlc_object_release( p_vout );
 399         return NULL;
 400     }
 401
 402     /* Create a few object variables for interface interaction */
 403     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
 404     text.psz_string = _("Deinterlace");
 405     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
 406     val.psz_string = (char *)""; text.psz_string = _("Disable");
 407     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 408     val.psz_string = (char *)"discard"; text.psz_string = _("Discard");
 409     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 410     val.psz_string = (char *)"blend"; text.psz_string = _("Blend");
 411     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 412     val.psz_string = (char *)"mean"; text.psz_string = _("Mean");
 413     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 414     val.psz_string = (char *)"bob"; text.psz_string = _("Bob");
 415     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 416     val.psz_string = (char *)"linear"; text.psz_string = _("Linear");
 417     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 418     val.psz_string = (char *)"x"; text.psz_string = (char *)"X";
 419     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 420
 421     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 422     {
 423         var_Set( p_vout, "deinterlace", val );
 424         free( val.psz_string );
 425     }
 426     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 427
 428     var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 429     text.psz_string = _("Filters");
 430     var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
 431     var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
 432
 433     /* Calculate delay created by internal caching */
 434     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 435                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 436     if( p_input_thread )
 437     {
 438         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 439         vlc_object_release( p_input_thread );
 440     }
 441     else
 442     {
 443         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 444     }
 445
 446     if( vlc_thread_create( p_vout, "video output", RunThread,
 447                            VLC_THREAD_PRIORITY_OUTPUT, true ) )
 448     {
 449         msg_Err( p_vout, "out of memory" );
 450         module_Unneed( p_vout, p_vout->p_module );
 451         vlc_object_release( p_vout );
 452         return NULL;
 453     }
 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 */
 460         vlc_object_release( p_vout );
 461         return NULL;
 462     }
 463
 464     vlc_object_set_destructor( p_vout, vout_Destructor );
 465
 466     return p_vout;
 467 }
 468
 469 static void vout_Destructor( vlc_object_t * p_this )
 470 {
 471     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 472
 473     /* Destroy the locks */
 474     vlc_mutex_destroy( &p_vout->picture_lock );
 475     vlc_mutex_destroy( &p_vout->change_lock );
 476     vlc_mutex_destroy( &p_vout->vfilter_lock );
 477
 478     /* Release the module */
 479     if( p_vout->p_module )
 480     {
 481         module_Unneed( p_vout, p_vout->p_module );
 482     }
 483
 484     free( p_vout->psz_filter_chain );
 485
 486     config_ChainDestroy( p_vout->p_cfg );
 487
 488 #ifndef __APPLE__
 489     vout_thread_t *p_another_vout;
 490
 491     /* This is a dirty hack mostly for Linux, where there is no way to get the
 492      * GUI back if you closed it while playing video. This is solved in
 493      * Mac OS X, where we have this novelty called menubar, that will always
 494      * allow you access to the applications main functionality. They should try
 495      * that on linux sometime. */
 496     p_another_vout = vlc_object_find( p_this->p_libvlc,
 497                                       VLC_OBJECT_VOUT, FIND_ANYWHERE );
 498     if( p_another_vout == NULL )
 499         var_SetBool( p_this->p_libvlc, "intf-show", true );
 500     else
 501         vlc_object_release( p_another_vout );
 502 #endif
 503 }
 504
 505 /*****************************************************************************
 506  * InitThread: initialize video output thread
 507  *****************************************************************************
 508  * This function is called from RunThread and performs the second step of the
 509  * initialization. It returns 0 on success. Note that the thread's flag are not
 510  * modified inside this function.
 511  *****************************************************************************/
 512 static picture_t *get_pic( filter_t *p_filter )
 513 {
 514     picture_t *p_pic = (picture_t *)p_filter->p_owner;
 515     p_filter->p_owner = NULL;
 516     return p_pic;
 517 }
 518
 519 static int InitThread( vout_thread_t *p_vout )
 520 {
 521     int i, i_aspect_x, i_aspect_y;
 522
 523     vlc_mutex_lock( &p_vout->change_lock );
 524
 525 #ifdef STATS
 526     p_vout->c_loops = 0;
 527 #endif
 528
 529     /* Initialize output method, it allocates direct buffers for us */
 530     if( p_vout->pf_init( p_vout ) )
 531     {
 532         vlc_mutex_unlock( &p_vout->change_lock );
 533         return VLC_EGENERIC;
 534     }
 535
 536     if( !I_OUTPUTPICTURES )
 537     {
 538         msg_Err( p_vout, "plugin was unable to allocate at least "
 539                          "one direct buffer" );
 540         p_vout->pf_end( p_vout );
 541         vlc_mutex_unlock( &p_vout->change_lock );
 542         return VLC_EGENERIC;
 543     }
 544
 545     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 546     {
 547         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 548                          "our internal buffers must have overflown." );
 549         p_vout->pf_end( p_vout );
 550         vlc_mutex_unlock( &p_vout->change_lock );
 551         return VLC_EGENERIC;
 552     }
 553
 554     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 555
 556     AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );
 557
 558     msg_Dbg( p_vout, "picture in %ix%i (%i,%i,%ix%i), "
 559              "chroma %4.4s, ar %i:%i, sar %i:%i",
 560              p_vout->fmt_render.i_width, p_vout->fmt_render.i_height,
 561              p_vout->fmt_render.i_x_offset, p_vout->fmt_render.i_y_offset,
 562              p_vout->fmt_render.i_visible_width,
 563              p_vout->fmt_render.i_visible_height,
 564              (char*)&p_vout->fmt_render.i_chroma,
 565              i_aspect_x, i_aspect_y,
 566              p_vout->fmt_render.i_sar_num, p_vout->fmt_render.i_sar_den );
 567
 568     AspectRatio( p_vout->fmt_in.i_aspect, &i_aspect_x, &i_aspect_y );
 569
 570     msg_Dbg( p_vout, "picture user %ix%i (%i,%i,%ix%i), "
 571              "chroma %4.4s, ar %i:%i, sar %i:%i",
 572              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 573              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 574              p_vout->fmt_in.i_visible_width,
 575              p_vout->fmt_in.i_visible_height,
 576              (char*)&p_vout->fmt_in.i_chroma,
 577              i_aspect_x, i_aspect_y,
 578              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 579
 580     if( !p_vout->fmt_out.i_width || !p_vout->fmt_out.i_height )
 581     {
 582         p_vout->fmt_out.i_width = p_vout->fmt_out.i_visible_width =
 583             p_vout->output.i_width;
 584         p_vout->fmt_out.i_height = p_vout->fmt_out.i_visible_height =
 585             p_vout->output.i_height;
 586         p_vout->fmt_out.i_x_offset =  p_vout->fmt_out.i_y_offset = 0;
 587
 588         p_vout->fmt_out.i_aspect = p_vout->output.i_aspect;
 589         p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 590     }
 591     if( !p_vout->fmt_out.i_sar_num || !p_vout->fmt_out.i_sar_num )
 592     {
 593         p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_aspect *
 594             p_vout->fmt_out.i_height;
 595         p_vout->fmt_out.i_sar_den = VOUT_ASPECT_FACTOR *
 596             p_vout->fmt_out.i_width;
 597     }
 598
 599     vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
 600                  p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
 601
 602     AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
 603
 604     msg_Dbg( p_vout, "picture out %ix%i (%i,%i,%ix%i), "
 605              "chroma %4.4s, ar %i:%i, sar %i:%i",
 606              p_vout->fmt_out.i_width, p_vout->fmt_out.i_height,
 607              p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
 608              p_vout->fmt_out.i_visible_width,
 609              p_vout->fmt_out.i_visible_height,
 610              (char*)&p_vout->fmt_out.i_chroma,
 611              i_aspect_x, i_aspect_y,
 612              p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den );
 613
 614     /* Calculate shifts from system-updated masks */
 615     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 616                  p_vout->output.i_rmask );
 617     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 618                  p_vout->output.i_gmask );
 619     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 620                  p_vout->output.i_bmask );
 621
 622     /* Check whether we managed to create direct buffers similar to
 623      * the render buffers, ie same size and chroma */
 624     if( ( p_vout->output.i_width == p_vout->render.i_width )
 625      && ( p_vout->output.i_height == p_vout->render.i_height )
 626      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 627     {
 628         /* Cool ! We have direct buffers, we can ask the decoder to
 629          * directly decode into them ! Map the first render buffers to
 630          * the first direct buffers, but keep the first direct buffer
 631          * for memcpy operations */
 632         p_vout->b_direct = 1;
 633
 634         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 635         {
 636             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 637                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 638                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 639             {
 640                 /* We have enough direct buffers so there's no need to
 641                  * try to use system memory buffers. */
 642                 break;
 643             }
 644             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 645             I_RENDERPICTURES++;
 646         }
 647
 648         msg_Dbg( p_vout, "direct render, mapping "
 649                  "render pictures 0-%i to system pictures 1-%i",
 650                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 651     }
 652     else
 653     {
 654         /* Rats... Something is wrong here, we could not find an output
 655          * plugin able to directly render what we decode. See if we can
 656          * find a chroma plugin to do the conversion */
 657         p_vout->b_direct = 0;
 658
 659         /* Choose the best module */
 660         p_vout->p_chroma = vlc_object_create( p_vout, VLC_OBJECT_FILTER );
 661         filter_t *p_chroma = p_vout->p_chroma;
 662         vlc_object_attach( p_chroma, p_vout );
 663         /* TODO: Set the fmt_in and fmt_out stuff here */
 664         p_chroma->fmt_in.video = p_vout->fmt_render;
 665         p_chroma->fmt_out.video = p_vout->fmt_out;
 666
 667         /* TODO: put in a function */
 668         p_chroma->fmt_out.video.i_rmask = p_vout->output.i_rmask;
 669         p_chroma->fmt_out.video.i_gmask = p_vout->output.i_gmask;
 670         p_chroma->fmt_out.video.i_bmask = p_vout->output.i_bmask;
 671         p_chroma->fmt_out.video.i_rrshift = p_vout->output.i_rrshift;
 672         p_chroma->fmt_out.video.i_lrshift = p_vout->output.i_lrshift;
 673         p_chroma->fmt_out.video.i_rgshift = p_vout->output.i_rgshift;
 674         p_chroma->fmt_out.video.i_lgshift = p_vout->output.i_lgshift;
 675         p_chroma->fmt_out.video.i_rbshift = p_vout->output.i_rbshift;
 676         p_chroma->fmt_out.video.i_lbshift = p_vout->output.i_lbshift;
 677         p_chroma->p_module = module_Need( p_chroma, "video filter2", NULL, 0 );
 678
 679         if( p_chroma->p_module == NULL )
 680         {
 681             msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
 682                      (char*)&p_vout->render.i_chroma,
 683                      (char*)&p_vout->output.i_chroma );
 684             vlc_object_detach( p_vout->p_chroma );
 685             p_vout->p_chroma = NULL;
 686             p_vout->pf_end( p_vout );
 687             vlc_mutex_unlock( &p_vout->change_lock );
 688             return VLC_EGENERIC;
 689         }
 690         p_chroma->pf_vout_buffer_new = get_pic;
 691
 692         msg_Dbg( p_vout, "indirect render, mapping "
 693                  "render pictures 0-%i to system pictures %i-%i",
 694                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 695                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 696
 697         /* Append render buffers after the direct buffers */
 698         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 699         {
 700             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 701             I_RENDERPICTURES++;
 702
 703             /* Check if we have enough render pictures */
 704             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 705                 break;
 706         }
 707     }
 708
 709     /* Link pictures back to their heap */
 710     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 711     {
 712         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 713     }
 714
 715     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 716     {
 717         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 718     }
 719
 720 /* XXX XXX mark thread ready */
 721     return VLC_SUCCESS;
 722 }
 723
 724 /*****************************************************************************
 725  * RunThread: video output thread
 726  *****************************************************************************
 727  * Video output thread. This function does only returns when the thread is
 728  * terminated. It handles the pictures arriving in the video heap and the
 729  * display device events.
 730  *****************************************************************************/
 731 static void RunThread( vout_thread_t *p_vout)
 732 {
 733     int             i_index;                                /* index in heap */
 734     int             i_idle_loops = 0;  /* loops without displaying a picture */
 735     mtime_t         current_date;                            /* current date */
 736     mtime_t         display_date;                            /* display date */
 737
 738     picture_t *     p_picture;                            /* picture pointer */
 739     picture_t *     p_last_picture = NULL;                   /* last picture */
 740     picture_t *     p_directbuffer;              /* direct buffer to display */
 741
 742     subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
 743
 744     input_thread_t *p_input = NULL ;           /* Parent input, if it exists */
 745
 746     vlc_value_t     val;
 747     bool      b_drop_late;
 748
 749     int             i_displayed = 0, i_lost = 0, i_loops = 0;
 750
 751     /*
 752      * Initialize thread
 753      */
 754     p_vout->b_error = InitThread( p_vout );
 755
 756     var_Create( p_vout, "drop-late-frames", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 757     var_Get( p_vout, "drop-late-frames", &val );
 758     b_drop_late = val.b_bool;
 759
 760     /* signal the creation of the vout */
 761     vlc_thread_ready( p_vout );
 762
 763     if( p_vout->b_error )
 764         return;
 765
 766     vlc_object_lock( p_vout );
 767
 768     if( p_vout->b_title_show )
 769         DisplayTitleOnOSD( p_vout );
 770
 771     /*
 772      * Main loop - it is not executed if an error occurred during
 773      * initialization
 774      */
 775     while( (vlc_object_alive( p_vout )) && (!p_vout->b_error) )
 776     {
 777         /* Initialize loop variables */
 778         p_picture = NULL;
 779         display_date = 0;
 780         current_date = mdate();
 781
 782         i_loops++;
 783             if( !p_input )
 784             {
 785                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 786                                            FIND_PARENT );
 787             }
 788             if( p_input )
 789             {
 790                 vlc_mutex_lock( &p_input->p->counters.counters_lock );
 791                 stats_UpdateInteger( p_vout, p_input->p->counters.p_lost_pictures,
 792                                      i_lost , NULL);
 793                 stats_UpdateInteger( p_vout,
 794                                      p_input->p->counters.p_displayed_pictures,
 795                                      i_displayed , NULL);
 796                 i_displayed = i_lost = 0;
 797                 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 798                 vlc_object_release( p_input );
 799                 p_input = NULL;
 800             }
 801 #if 0
 802         p_vout->c_loops++;
 803         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 804         {
 805             msg_Dbg( p_vout, "picture heap: %d/%d",
 806                      I_RENDERPICTURES, p_vout->i_heap_size );
 807         }
 808 #endif
 809
 810         /*
 811          * Find the picture to display (the one with the earliest date).
 812          * This operation does not need lock, since only READY_PICTUREs
 813          * are handled. */
 814         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 815         {
 816             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 817                 && ( (p_picture == NULL) ||
 818                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 819             {
 820                 p_picture = PP_RENDERPICTURE[i_index];
 821                 display_date = p_picture->date;
 822             }
 823         }
 824
 825         if( p_picture )
 826         {
 827             /* If we met the last picture, parse again to see whether there is
 828              * a more appropriate one. */
 829             if( p_picture == p_last_picture )
 830             {
 831                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 832                 {
 833                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 834                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 835                         && ((p_picture == p_last_picture) ||
 836                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 837                     {
 838                         p_picture = PP_RENDERPICTURE[i_index];
 839                         display_date = p_picture->date;
 840                     }
 841                 }
 842             }
 843
 844             /* If we found better than the last picture, destroy it */
 845             if( p_last_picture && p_picture != p_last_picture )
 846             {
 847                 vlc_mutex_lock( &p_vout->picture_lock );
 848                 if( p_last_picture->i_refcount )
 849                 {
 850                     p_last_picture->i_status = DISPLAYED_PICTURE;
 851                 }
 852                 else
 853                 {
 854                     p_last_picture->i_status = DESTROYED_PICTURE;
 855                     p_vout->i_heap_size--;
 856                 }
 857                 vlc_mutex_unlock( &p_vout->picture_lock );
 858                 p_last_picture = NULL;
 859             }
 860
 861             /* Compute FPS rate */
 862             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 863                 = display_date;
 864
 865             if( !p_picture->b_force &&
 866                 p_picture != p_last_picture &&
 867                 display_date < current_date + p_vout->render_time &&
 868                 b_drop_late )
 869             {
 870                 /* Picture is late: it will be destroyed and the thread
 871                  * will directly choose the next picture */
 872                 vlc_mutex_lock( &p_vout->picture_lock );
 873                 if( p_picture->i_refcount )
 874                 {
 875                     /* Pretend we displayed the picture, but don't destroy
 876                      * it since the decoder might still need it. */
 877                     p_picture->i_status = DISPLAYED_PICTURE;
 878                 }
 879                 else
 880                 {
 881                     /* Destroy the picture without displaying it */
 882                     p_picture->i_status = DESTROYED_PICTURE;
 883                     p_vout->i_heap_size--;
 884                 }
 885                 msg_Warn( p_vout, "late picture skipped (%"PRId64")",
 886                                   current_date - display_date );
 887                 i_lost++;
 888                 vlc_mutex_unlock( &p_vout->picture_lock );
 889
 890                 continue;
 891             }
 892
 893             if( display_date >
 894                 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
 895             {
 896                 /* Picture is waaay too early: it will be destroyed */
 897                 vlc_mutex_lock( &p_vout->picture_lock );
 898                 if( p_picture->i_refcount )
 899                 {
 900                     /* Pretend we displayed the picture, but don't destroy
 901                      * it since the decoder might still need it. */
 902                     p_picture->i_status = DISPLAYED_PICTURE;
 903                 }
 904                 else
 905                 {
 906                     /* Destroy the picture without displaying it */
 907                     p_picture->i_status = DESTROYED_PICTURE;
 908                     p_vout->i_heap_size--;
 909                 }
 910                 i_lost++;
 911                 msg_Warn( p_vout, "vout warning: early picture skipped "
 912                           "(%"PRId64")", display_date - current_date
 913                           - p_vout->i_pts_delay );
 914                 vlc_mutex_unlock( &p_vout->picture_lock );
 915
 916                 continue;
 917             }
 918
 919             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 920             {
 921                 /* A picture is ready to be rendered, but its rendering date
 922                  * is far from the current one so the thread will perform an
 923                  * empty loop as if no picture were found. The picture state
 924                  * is unchanged */
 925                 p_picture    = NULL;
 926                 display_date = 0;
 927             }
 928             else if( p_picture == p_last_picture )
 929             {
 930                 /* We are asked to repeat the previous picture, but we first
 931                  * wait for a couple of idle loops */
 932                 if( i_idle_loops < 4 )
 933                 {
 934                     p_picture    = NULL;
 935                     display_date = 0;
 936                 }
 937                 else
 938                 {
 939                     /* We set the display date to something high, otherwise
 940                      * we'll have lots of problems with late pictures */
 941                     display_date = current_date + p_vout->render_time;
 942                 }
 943             }
 944         }
 945
 946         if( p_picture == NULL )
 947         {
 948             i_idle_loops++;
 949         }
 950
 951         /* Video Filter2 stuff */
 952         if( p_vout->psz_vf2 )
 953         {
 954             es_format_t fmt;
 955
 956             vlc_mutex_lock( &p_vout->vfilter_lock );
 957
 958             es_format_Init( &fmt, VIDEO_ES, p_vout->fmt_render.i_chroma );
 959             fmt.video = p_vout->fmt_render;
 960             filter_chain_Reset( p_vout->p_vf2_chain, &fmt, &fmt );
 961
 962             if( filter_chain_AppendFromString( p_vout->p_vf2_chain,
 963                                                p_vout->psz_vf2 ) < 0 )
 964                 msg_Err( p_vout, "Video filter chain creation failed" );
 965
 966             free( p_vout->psz_vf2 );
 967             p_vout->psz_vf2 = NULL;
 968             vlc_mutex_unlock( &p_vout->vfilter_lock );
 969         }
 970
 971         if( p_picture )
 972         {
 973             p_picture = filter_chain_VideoFilter( p_vout->p_vf2_chain,
 974                                                   p_picture );
 975         }
 976
 977         if( p_picture && p_vout->b_snapshot )
 978         {
 979             p_vout->b_snapshot = false;
 980             vout_Snapshot( p_vout, p_picture );
 981         }
 982
 983         /*
 984          * Check for subpictures to display
 985          */
 986         if( display_date > 0 )
 987         {
 988             if( !p_input )
 989             {
 990                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 991                                            FIND_PARENT );
 992             }
 993             p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date,
 994             p_input ? var_GetBool( p_input, "state" ) == PAUSE_S : false );
 995             if( p_input )
 996                 vlc_object_release( p_input );
 997             p_input = NULL;
 998         }
 999
1000         /*
1001          * Perform rendering
1002          */
1003         i_displayed++;
1004         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
1005
1006         /*
1007          * Call the plugin-specific rendering method if there is one
1008          */
1009         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
1010         {
1011             /* Render the direct buffer returned by vout_RenderPicture */
1012             p_vout->pf_render( p_vout, p_directbuffer );
1013         }
1014
1015         /*
1016          * Sleep, wake up
1017          */
1018         if( display_date != 0 && p_directbuffer != NULL )
1019         {
1020             mtime_t current_render_time = mdate() - current_date;
1021             /* if render time is very large we don't include it in the mean */
1022             if( current_render_time < p_vout->render_time +
1023                 VOUT_DISPLAY_DELAY )
1024             {
1025                 /* Store render time using a sliding mean weighting to
1026                  * current value in a 3 to 1 ratio*/
1027                 p_vout->render_time *= 3;
1028                 p_vout->render_time += current_render_time;
1029                 p_vout->render_time >>= 2;
1030             }
1031         }
1032
1033         /* Give back change lock */
1034         vlc_mutex_unlock( &p_vout->change_lock );
1035
1036         vlc_object_unlock( p_vout );
1037
1038         /* Sleep a while or until a given date */
1039         if( display_date != 0 )
1040         {
1041             /* If there are filters in the chain, better give them the picture
1042              * in advance */
1043             if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
1044             {
1045                 mwait( display_date - VOUT_MWAIT_TOLERANCE );
1046             }
1047         }
1048         else
1049         {
1050             msleep( VOUT_IDLE_SLEEP );
1051         }
1052
1053         /* On awakening, take back lock and send immediately picture
1054          * to display. */
1055         vlc_object_lock( p_vout );
1056         /* Note: vlc_object_alive() could be false here, and we
1057          * could be dead */
1058         vlc_mutex_lock( &p_vout->change_lock );
1059
1060         /*
1061          * Display the previously rendered picture
1062          */
1063         if( p_picture != NULL && p_directbuffer != NULL )
1064         {
1065             /* Display the direct buffer returned by vout_RenderPicture */
1066             if( p_vout->pf_display )
1067             {
1068                 p_vout->pf_display( p_vout, p_directbuffer );
1069             }
1070
1071             /* Tell the vout this was the last picture and that it does not
1072              * need to be forced anymore. */
1073             p_last_picture = p_picture;
1074             p_last_picture->b_force = 0;
1075         }
1076
1077         if( p_picture != NULL )
1078         {
1079             /* Reinitialize idle loop count */
1080             i_idle_loops = 0;
1081         }
1082
1083         /*
1084          * Check events and manage thread
1085          */
1086         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
1087         {
1088             /* A fatal error occurred, and the thread must terminate
1089              * immediately, without displaying anything - setting b_error to 1
1090              * causes the immediate end of the main while() loop. */
1091             p_vout->b_error = 1;
1092         }
1093
1094         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
1095         {
1096             /* this must only happen when the vout plugin is incapable of
1097              * rescaling the picture itself. In this case we need to destroy
1098              * the current picture buffers and recreate new ones with the right
1099              * dimensions */
1100             int i;
1101
1102             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
1103
1104             p_vout->pf_end( p_vout );
1105             for( i = 0; i < I_OUTPUTPICTURES; i++ )
1106                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
1107
1108             I_OUTPUTPICTURES = 0;
1109             if( p_vout->pf_init( p_vout ) )
1110             {
1111                 msg_Err( p_vout, "cannot resize display" );
1112                 /* FIXME: pf_end will be called again in EndThread() */
1113                 p_vout->b_error = 1;
1114             }
1115
1116             /* Need to reinitialise the chroma plugin. Since we might need
1117              * resizing too and it's not sure that we already had it,
1118              * recreate the chroma plugin chain from scratch. */
1119             /* dionoea */
1120             if( p_vout->p_chroma->p_module )
1121             {
1122                 filter_t *p_chroma = p_vout->p_chroma;
1123                 module_Unneed( p_chroma, p_chroma->p_module );
1124                 p_chroma->fmt_out.video = p_vout->fmt_out;
1125                 p_chroma->fmt_out.video.i_rmask = p_vout->output.i_rmask;
1126                 p_chroma->fmt_out.video.i_gmask = p_vout->output.i_gmask;
1127                 p_chroma->fmt_out.video.i_bmask = p_vout->output.i_bmask;
1128                 p_chroma->fmt_out.video.i_rrshift = p_vout->output.i_rrshift;
1129                 p_chroma->fmt_out.video.i_lrshift = p_vout->output.i_lrshift;
1130                 p_chroma->fmt_out.video.i_rgshift = p_vout->output.i_rgshift;
1131                 p_chroma->fmt_out.video.i_lgshift = p_vout->output.i_lgshift;
1132                 p_chroma->fmt_out.video.i_rbshift = p_vout->output.i_rbshift;
1133                 p_chroma->fmt_out.video.i_lbshift = p_vout->output.i_lbshift;
1134                 p_chroma->p_module = module_Need( p_chroma, "video filter2", NULL, 0 );
1135                 if( !p_chroma->p_module )
1136                 {
1137                     msg_Err( p_vout, "WOW THIS SUCKS BIG TIME!!!!!" );
1138                 }
1139             }
1140         }
1141
1142         if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1143         {
1144             /* This happens when the picture buffers need to be recreated.
1145              * This is useful on multimonitor displays for instance.
1146              *
1147              * Warning: This only works when the vout creates only 1 picture
1148              * buffer!! */
1149             p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1150
1151             if( !p_vout->b_direct )
1152             {
1153                 module_Unneed( p_vout->p_chroma, p_vout->p_chroma->p_module );
1154                 p_vout->p_chroma = NULL;
1155             }
1156
1157             vlc_mutex_lock( &p_vout->picture_lock );
1158
1159             p_vout->pf_end( p_vout );
1160
1161             I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1162
1163             p_vout->b_error = InitThread( p_vout );
1164
1165             vlc_mutex_unlock( &p_vout->picture_lock );
1166         }
1167     }
1168
1169
1170     if( p_input )
1171     {
1172         vlc_object_release( p_input );
1173     }
1174
1175     /*
1176      * Error loop - wait until the thread destruction is requested
1177      */
1178     if( p_vout->b_error )
1179     {
1180         ErrorThread( p_vout );
1181     }
1182
1183     /* End of thread */
1184     EndThread( p_vout );
1185     vlc_object_unlock( p_vout );
1186 }
1187
1188 /*****************************************************************************
1189  * ErrorThread: RunThread() error loop
1190  *****************************************************************************
1191  * This function is called when an error occurred during thread main's loop.
1192  * The thread can still receive feed, but must be ready to terminate as soon
1193  * as possible.
1194  *****************************************************************************/
1195 static void ErrorThread( vout_thread_t *p_vout )
1196 {
1197     /* Wait until a `die' order */
1198     while( !p_vout->b_die )
1199     {
1200         /* Sleep a while */
1201         msleep( VOUT_IDLE_SLEEP );
1202     }
1203 }
1204
1205 /*****************************************************************************
1206  * EndThread: thread destruction
1207  *****************************************************************************
1208  * This function is called when the thread ends after a sucessful
1209  * initialization. It frees all resources allocated by InitThread.
1210  *****************************************************************************/
1211 static void EndThread( vout_thread_t *p_vout )
1212 {
1213     int     i_index;                                        /* index in heap */
1214
1215 #ifdef STATS
1216     {
1217         struct tms cpu_usage;
1218         times( &cpu_usage );
1219
1220         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1221                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1222     }
1223 #endif
1224
1225     if( !p_vout->b_direct )
1226     {
1227         module_Unneed( p_vout->p_chroma, p_vout->p_chroma->p_module );
1228         p_vout->p_chroma->p_module = NULL;
1229     }
1230
1231     /* Destroy all remaining pictures */
1232     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1233     {
1234         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1235         {
1236             free( p_vout->p_picture[i_index].p_data_orig );
1237         }
1238     }
1239
1240     /* Destroy subpicture unit */
1241     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), false );
1242     spu_Destroy( p_vout->p_spu );
1243
1244     /* Destroy the video filters2 */
1245     filter_chain_Delete( p_vout->p_vf2_chain );
1246
1247     /* Destroy translation tables */
1248     p_vout->pf_end( p_vout );
1249
1250     /* Release the change lock */
1251     vlc_mutex_unlock( &p_vout->change_lock );
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