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

   1 /*****************************************************************************
   2  * video_output.c : video output thread
   3  *
   4  * This module describes the programming interface for video output threads.
   5  * It includes functions allowing to open a new thread, send pictures to a
   6  * thread, and destroy a previously oppened video output thread.
   7  *****************************************************************************
   8  * Copyright (C) 2000-2007 the VideoLAN team
   9  * $Id$
  10  *
  11  * Authors: Vincent Seguin <seguin@via.ecp.fr>
  12  *          Gildas Bazin <gbazin@videolan.org>
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  27  *****************************************************************************/
  28
  29 /*****************************************************************************
  30  * Preamble
  31  *****************************************************************************/
  32 #ifdef HAVE_CONFIG_H
  33 # include "config.h"
  34 #endif
  35
  36 #include <vlc_common.h>
  37
  38 #include <stdlib.h>                                                /* free() */
  39 #include <string.h>
  40
  41
  42 #ifdef HAVE_SYS_TIMES_H
  43 #   include <sys/times.h>
  44 #endif
  45
  46 #include <vlc_vout.h>
  47
  48 #include <vlc_filter.h>
  49 #include <vlc_osd.h>
  50
  51 #if defined( __APPLE__ )
  52 /* Include darwin_specific.h here if needed */
  53 #endif
  54
  55 /** FIXME This is quite ugly but needed while we don't have counters
  56  * helpers */
  57 #include "input/input_internal.h"
  58
  59 #include "modules/modules.h"
  60 #include <assert.h>
  61
  62 /*****************************************************************************
  63  * Local prototypes
  64  *****************************************************************************/
  65 static int      InitThread        ( vout_thread_t * );
  66 static void     RunThread         ( vout_thread_t * );
  67 static void     ErrorThread       ( vout_thread_t * );
  68 static void     EndThread         ( vout_thread_t * );
  69
  70 static void     AspectRatio       ( int, int *, int * );
  71 static int      BinaryLog         ( uint32_t );
  72 static void     MaskToShift       ( int *, int *, uint32_t );
  73
  74 static void     vout_Destructor   ( vlc_object_t * p_this );
  75
  76 /* Object variables callbacks */
  77 static int DeinterlaceCallback( vlc_object_t *, char const *,
  78                                 vlc_value_t, vlc_value_t, void * );
  79 static int FilterCallback( vlc_object_t *, char const *,
  80                            vlc_value_t, vlc_value_t, void * );
  81 static int VideoFilter2Callback( vlc_object_t *, char const *,
  82                                  vlc_value_t, vlc_value_t, void * );
  83
  84 /* From vout_intf.c */
  85 int vout_Snapshot( vout_thread_t *, picture_t * );
  86
  87 /* Display media title in OSD */
  88 static void DisplayTitleOnOSD( vout_thread_t *p_vout );
  89
  90 /*****************************************************************************
  91  * Video Filter2 functions
  92  *****************************************************************************/
  93 static picture_t *video_new_buffer_filter( filter_t *p_filter )
  94 {
  95     picture_t *p_picture;
  96     vout_thread_t *p_vout = (vout_thread_t*)p_filter->p_owner;
  97
  98     p_picture = vout_CreatePicture( p_vout, 0, 0, 0 );
  99
 100     return p_picture;
 101 }
 102
 103 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
 104 {
 105     vout_DestroyPicture( (vout_thread_t*)p_filter->p_owner, p_pic );
 106 }
 107
 108 static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
 109 {
 110     p_filter->pf_vout_buffer_new = video_new_buffer_filter;
 111     p_filter->pf_vout_buffer_del = video_del_buffer_filter;
 112     p_filter->p_owner = p_data; /* p_vout */
 113     return VLC_SUCCESS;
 114 }
 115
 116 /*****************************************************************************
 117  * vout_Request: find a video output thread, create one, or destroy one.
 118  *****************************************************************************
 119  * This function looks for a video output thread matching the current
 120  * properties. If not found, it spawns a new one.
 121  *****************************************************************************/
 122 vout_thread_t *__vout_Request( vlc_object_t *p_this, vout_thread_t *p_vout,
 123                                video_format_t *p_fmt )
 124 {
 125     if( !p_fmt )
 126     {
 127         /* Reattach video output to the instance before bailing out */
 128         if( p_vout )
 129         {
 130             spu_Attach( p_vout->p_spu, p_this, false );
 131             vlc_object_detach( p_vout );
 132             vlc_object_attach( p_vout, p_this->p_libvlc );
 133         }
 134         return NULL;
 135     }
 136
 137     /* If a video output was provided, lock it, otherwise look for one. */
 138     if( p_vout )
 139     {
 140         vlc_object_yield( p_vout );
 141     }
 142     else
 143     {
 144         p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD );
 145
 146         if( !p_vout )
 147         {
 148             p_vout = vlc_object_find( p_this->p_libvlc,
 149                                       VLC_OBJECT_VOUT, FIND_CHILD );
 150             /* only first children of p_input for unused vout */
 151             if( p_vout && p_vout->p_parent != VLC_OBJECT(p_this->p_libvlc) )
 152             {
 153                 vlc_object_release( p_vout );
 154                 p_vout = NULL;
 155             }
 156             if( p_vout )
 157                 vlc_object_detach( p_vout );    /* Remove it from the GC */
 158         }
 159     }
 160
 161     /* If we now have a video output, check it has the right properties */
 162     if( p_vout )
 163     {
 164         char *psz_filter_chain;
 165         vlc_value_t val;
 166
 167         /* We don't directly check for the "vout-filter" variable for obvious
 168          * performance reasons. */
 169         if( p_vout->b_filter_change )
 170         {
 171             var_Get( p_vout, "vout-filter", &val );
 172             psz_filter_chain = val.psz_string;
 173
 174             if( psz_filter_chain && !*psz_filter_chain )
 175             {
 176                 free( psz_filter_chain );
 177                 psz_filter_chain = NULL;
 178             }
 179             if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
 180             {
 181                 free( p_vout->psz_filter_chain );
 182                 p_vout->psz_filter_chain = NULL;
 183             }
 184
 185             if( !psz_filter_chain && !p_vout->psz_filter_chain )
 186             {
 187                 p_vout->b_filter_change = false;
 188             }
 189
 190             free( psz_filter_chain );
 191         }
 192
 193         if( ( p_vout->fmt_render.i_width != p_fmt->i_width ) ||
 194             ( p_vout->fmt_render.i_height != p_fmt->i_height ) ||
 195             ( p_vout->fmt_render.i_aspect != p_fmt->i_aspect ) ||
 196             p_vout->b_filter_change )
 197         {
 198             /* We are not interested in this format, close this vout */
 199             vlc_object_release( p_vout );
 200             vlc_object_release( p_vout );
 201             p_vout = NULL;
 202         }
 203         else
 204         {
 205             /* This video output is cool! Hijack it. */
 206             spu_Attach( p_vout->p_spu, p_this, true );
 207             vlc_object_attach( p_vout, p_this );
 208             if( p_vout->b_title_show )
 209                 DisplayTitleOnOSD( p_vout );
 210             vlc_object_release( p_vout );
 211         }
 212     }
 213
 214     if( !p_vout )
 215     {
 216         msg_Dbg( p_this, "no usable vout present, spawning one" );
 217
 218         p_vout = vout_Create( p_this, p_fmt );
 219     }
 220
 221     return p_vout;
 222 }
 223
 224 /*****************************************************************************
 225  * vout_Create: creates a new video output thread
 226  *****************************************************************************
 227  * This function creates a new video output thread, and returns a pointer
 228  * to its description. On error, it returns NULL.
 229  *****************************************************************************/
 230 vout_thread_t * __vout_Create( vlc_object_t *p_parent, video_format_t *p_fmt )
 231 {
 232     vout_thread_t  * p_vout;                            /* thread descriptor */
 233     input_thread_t * p_input_thread;
 234     int              i_index;                               /* loop variable */
 235     vlc_value_t      val, text;
 236
 237     unsigned int i_width = p_fmt->i_width;
 238     unsigned int i_height = p_fmt->i_height;
 239     vlc_fourcc_t i_chroma = p_fmt->i_chroma;
 240     unsigned int i_aspect = p_fmt->i_aspect;
 241
 242     config_chain_t *p_cfg;
 243     char *psz_parser;
 244     char *psz_name;
 245
 246     /* Allocate descriptor */
 247     static const char typename[] = "video output";
 248     p_vout = vlc_custom_create( p_parent, sizeof( *p_vout ), VLC_OBJECT_VOUT,
 249                                 typename );
 250     if( p_vout == NULL )
 251         return NULL;
 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 = NULL;
 311     p_vout->p_window = NULL;
 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         module_Unneed( p_vout, p_vout->p_module );
 450         vlc_object_release( p_vout );
 451         return NULL;
 452     }
 453
 454     vlc_object_set_destructor( p_vout, vout_Destructor );
 455
 456     if( p_vout->b_error )
 457     {
 458         msg_Err( p_vout, "video output creation failed" );
 459
 460         /* Make sure the thread is destroyed and data released */
 461         vlc_object_release( p_vout );
 462         return NULL;
 463     }
 464
 465     return p_vout;
 466 }
 467
 468 static void vout_Destructor( vlc_object_t * p_this )
 469 {
 470     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 471
 472     /* Destroy the locks */
 473     vlc_mutex_destroy( &p_vout->picture_lock );
 474     vlc_mutex_destroy( &p_vout->change_lock );
 475     vlc_mutex_destroy( &p_vout->vfilter_lock );
 476
 477     /* Release the module */
 478     if( p_vout->p_module )
 479     {
 480         module_Unneed( p_vout, p_vout->p_module );
 481     }
 482
 483     free( p_vout->psz_filter_chain );
 484
 485     config_ChainDestroy( p_vout->p_cfg );
 486
 487 #ifndef __APPLE__
 488     vout_thread_t *p_another_vout;
 489
 490     /* This is a dirty hack mostly for Linux, where there is no way to get the
 491      * GUI back if you closed it while playing video. This is solved in
 492      * Mac OS X, where we have this novelty called menubar, that will always
 493      * allow you access to the applications main functionality. They should try
 494      * that on linux sometime. */
 495     p_another_vout = vlc_object_find( p_this->p_libvlc,
 496                                       VLC_OBJECT_VOUT, FIND_ANYWHERE );
 497     if( p_another_vout == NULL )
 498         var_SetBool( p_this->p_libvlc, "intf-show", true );
 499     else
 500         vlc_object_release( p_another_vout );
 501 #endif
 502 }
 503
 504 /*****************************************************************************
 505  * InitThread: initialize video output thread
 506  *****************************************************************************
 507  * This function is called from RunThread and performs the second step of the
 508  * initialization. It returns 0 on success. Note that the thread's flag are not
 509  * modified inside this function.
 510  * XXX You have to enter it with change_lock taken.
 511  *****************************************************************************/
 512 static int ChromaCreate( vout_thread_t *p_vout );
 513 static void ChromaDestroy( vout_thread_t *p_vout );
 514
 515 static int InitThread( vout_thread_t *p_vout )
 516 {
 517     int i, i_aspect_x, i_aspect_y;
 518
 519 #ifdef STATS
 520     p_vout->c_loops = 0;
 521 #endif
 522
 523     /* Initialize output method, it allocates direct buffers for us */
 524     if( p_vout->pf_init( p_vout ) )
 525         return VLC_EGENERIC;
 526
 527     if( !I_OUTPUTPICTURES )
 528     {
 529         msg_Err( p_vout, "plugin was unable to allocate at least "
 530                          "one direct buffer" );
 531         p_vout->pf_end( p_vout );
 532         return VLC_EGENERIC;
 533     }
 534
 535     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 536     {
 537         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 538                          "our internal buffers must have overflown." );
 539         p_vout->pf_end( p_vout );
 540         return VLC_EGENERIC;
 541     }
 542
 543     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 544
 545     AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );
 546
 547     msg_Dbg( p_vout, "picture in %ix%i (%i,%i,%ix%i), "
 548              "chroma %4.4s, ar %i:%i, sar %i:%i",
 549              p_vout->fmt_render.i_width, p_vout->fmt_render.i_height,
 550              p_vout->fmt_render.i_x_offset, p_vout->fmt_render.i_y_offset,
 551              p_vout->fmt_render.i_visible_width,
 552              p_vout->fmt_render.i_visible_height,
 553              (char*)&p_vout->fmt_render.i_chroma,
 554              i_aspect_x, i_aspect_y,
 555              p_vout->fmt_render.i_sar_num, p_vout->fmt_render.i_sar_den );
 556
 557     AspectRatio( p_vout->fmt_in.i_aspect, &i_aspect_x, &i_aspect_y );
 558
 559     msg_Dbg( p_vout, "picture user %ix%i (%i,%i,%ix%i), "
 560              "chroma %4.4s, ar %i:%i, sar %i:%i",
 561              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 562              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 563              p_vout->fmt_in.i_visible_width,
 564              p_vout->fmt_in.i_visible_height,
 565              (char*)&p_vout->fmt_in.i_chroma,
 566              i_aspect_x, i_aspect_y,
 567              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 568
 569     if( !p_vout->fmt_out.i_width || !p_vout->fmt_out.i_height )
 570     {
 571         p_vout->fmt_out.i_width = p_vout->fmt_out.i_visible_width =
 572             p_vout->output.i_width;
 573         p_vout->fmt_out.i_height = p_vout->fmt_out.i_visible_height =
 574             p_vout->output.i_height;
 575         p_vout->fmt_out.i_x_offset =  p_vout->fmt_out.i_y_offset = 0;
 576
 577         p_vout->fmt_out.i_aspect = p_vout->output.i_aspect;
 578         p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 579     }
 580     if( !p_vout->fmt_out.i_sar_num || !p_vout->fmt_out.i_sar_num )
 581     {
 582         p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_aspect *
 583             p_vout->fmt_out.i_height;
 584         p_vout->fmt_out.i_sar_den = VOUT_ASPECT_FACTOR *
 585             p_vout->fmt_out.i_width;
 586     }
 587
 588     vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
 589                  p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
 590
 591     AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
 592
 593     msg_Dbg( p_vout, "picture out %ix%i (%i,%i,%ix%i), "
 594              "chroma %4.4s, ar %i:%i, sar %i:%i",
 595              p_vout->fmt_out.i_width, p_vout->fmt_out.i_height,
 596              p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
 597              p_vout->fmt_out.i_visible_width,
 598              p_vout->fmt_out.i_visible_height,
 599              (char*)&p_vout->fmt_out.i_chroma,
 600              i_aspect_x, i_aspect_y,
 601              p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den );
 602
 603     /* Calculate shifts from system-updated masks */
 604     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 605                  p_vout->output.i_rmask );
 606     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 607                  p_vout->output.i_gmask );
 608     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 609                  p_vout->output.i_bmask );
 610
 611     /* Check whether we managed to create direct buffers similar to
 612      * the render buffers, ie same size and chroma */
 613     if( ( p_vout->output.i_width == p_vout->render.i_width )
 614      && ( p_vout->output.i_height == p_vout->render.i_height )
 615      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 616     {
 617         /* Cool ! We have direct buffers, we can ask the decoder to
 618          * directly decode into them ! Map the first render buffers to
 619          * the first direct buffers, but keep the first direct buffer
 620          * for memcpy operations */
 621         p_vout->b_direct = 1;
 622
 623         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 624         {
 625             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 626                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 627                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 628             {
 629                 /* We have enough direct buffers so there's no need to
 630                  * try to use system memory buffers. */
 631                 break;
 632             }
 633             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 634             I_RENDERPICTURES++;
 635         }
 636
 637         msg_Dbg( p_vout, "direct render, mapping "
 638                  "render pictures 0-%i to system pictures 1-%i",
 639                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 640     }
 641     else
 642     {
 643         /* Rats... Something is wrong here, we could not find an output
 644          * plugin able to directly render what we decode. See if we can
 645          * find a chroma plugin to do the conversion */
 646         p_vout->b_direct = 0;
 647
 648         if( ChromaCreate( p_vout ) )
 649         {
 650             p_vout->pf_end( p_vout );
 651             return VLC_EGENERIC;
 652         }
 653
 654         msg_Dbg( p_vout, "indirect render, mapping "
 655                  "render pictures 0-%i to system pictures %i-%i",
 656                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 657                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 658
 659         /* Append render buffers after the direct buffers */
 660         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 661         {
 662             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 663             I_RENDERPICTURES++;
 664
 665             /* Check if we have enough render pictures */
 666             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 667                 break;
 668         }
 669     }
 670
 671     /* Link pictures back to their heap */
 672     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 673     {
 674         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 675     }
 676
 677     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 678     {
 679         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 680     }
 681
 682     return VLC_SUCCESS;
 683 }
 684
 685 /*****************************************************************************
 686  * RunThread: video output thread
 687  *****************************************************************************
 688  * Video output thread. This function does only returns when the thread is
 689  * terminated. It handles the pictures arriving in the video heap and the
 690  * display device events.
 691  *****************************************************************************/
 692 static void RunThread( vout_thread_t *p_vout)
 693 {
 694     int             i_index;                                /* index in heap */
 695     int             i_idle_loops = 0;  /* loops without displaying a picture */
 696     mtime_t         current_date;                            /* current date */
 697     mtime_t         display_date;                            /* display date */
 698
 699     picture_t *     p_picture;                            /* picture pointer */
 700     picture_t *     p_last_picture = NULL;                   /* last picture */
 701     picture_t *     p_directbuffer;              /* direct buffer to display */
 702
 703     subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
 704
 705     input_thread_t *p_input = NULL ;           /* Parent input, if it exists */
 706
 707     vlc_value_t     val;
 708     bool      b_drop_late;
 709
 710     int             i_displayed = 0, i_lost = 0, i_loops = 0;
 711
 712     /*
 713      * Initialize thread
 714      */
 715     vlc_mutex_lock( &p_vout->change_lock );
 716     p_vout->b_error = InitThread( p_vout );
 717
 718     var_Create( p_vout, "drop-late-frames", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 719     var_Get( p_vout, "drop-late-frames", &val );
 720     b_drop_late = val.b_bool;
 721
 722     /* signal the creation of the vout */
 723     vlc_thread_ready( p_vout );
 724
 725     if( p_vout->b_error )
 726     {
 727         vlc_mutex_unlock( &p_vout->change_lock );
 728         return;
 729     }
 730
 731     vlc_object_lock( p_vout );
 732
 733     if( p_vout->b_title_show )
 734         DisplayTitleOnOSD( p_vout );
 735
 736     /*
 737      * Main loop - it is not executed if an error occurred during
 738      * initialization
 739      */
 740     while( (vlc_object_alive( p_vout )) && (!p_vout->b_error) )
 741     {
 742         /* Initialize loop variables */
 743         p_picture = NULL;
 744         display_date = 0;
 745         current_date = mdate();
 746
 747         i_loops++;
 748             if( !p_input )
 749             {
 750                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 751                                            FIND_PARENT );
 752             }
 753             if( p_input )
 754             {
 755                 vlc_mutex_lock( &p_input->p->counters.counters_lock );
 756                 stats_UpdateInteger( p_vout, p_input->p->counters.p_lost_pictures,
 757                                      i_lost , NULL);
 758                 stats_UpdateInteger( p_vout,
 759                                      p_input->p->counters.p_displayed_pictures,
 760                                      i_displayed , NULL);
 761                 i_displayed = i_lost = 0;
 762                 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 763                 vlc_object_release( p_input );
 764                 p_input = NULL;
 765             }
 766 #if 0
 767         p_vout->c_loops++;
 768         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 769         {
 770             msg_Dbg( p_vout, "picture heap: %d/%d",
 771                      I_RENDERPICTURES, p_vout->i_heap_size );
 772         }
 773 #endif
 774
 775         /*
 776          * Find the picture to display (the one with the earliest date).
 777          * This operation does not need lock, since only READY_PICTUREs
 778          * are handled. */
 779         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 780         {
 781             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 782                 && ( (p_picture == NULL) ||
 783                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 784             {
 785                 p_picture = PP_RENDERPICTURE[i_index];
 786                 display_date = p_picture->date;
 787             }
 788         }
 789
 790         if( p_picture )
 791         {
 792             /* If we met the last picture, parse again to see whether there is
 793              * a more appropriate one. */
 794             if( p_picture == p_last_picture )
 795             {
 796                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 797                 {
 798                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 799                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 800                         && ((p_picture == p_last_picture) ||
 801                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 802                     {
 803                         p_picture = PP_RENDERPICTURE[i_index];
 804                         display_date = p_picture->date;
 805                     }
 806                 }
 807             }
 808
 809             /* If we found better than the last picture, destroy it */
 810             if( p_last_picture && p_picture != p_last_picture )
 811             {
 812                 vlc_mutex_lock( &p_vout->picture_lock );
 813                 if( p_last_picture->i_refcount )
 814                 {
 815                     p_last_picture->i_status = DISPLAYED_PICTURE;
 816                 }
 817                 else
 818                 {
 819                     p_last_picture->i_status = DESTROYED_PICTURE;
 820                     p_vout->i_heap_size--;
 821                 }
 822                 vlc_mutex_unlock( &p_vout->picture_lock );
 823                 p_last_picture = NULL;
 824             }
 825
 826             /* Compute FPS rate */
 827             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 828                 = display_date;
 829
 830             if( !p_picture->b_force &&
 831                 p_picture != p_last_picture &&
 832                 display_date < current_date + p_vout->render_time &&
 833                 b_drop_late )
 834             {
 835                 /* Picture is late: it will be destroyed and the thread
 836                  * will directly choose the next picture */
 837                 vlc_mutex_lock( &p_vout->picture_lock );
 838                 if( p_picture->i_refcount )
 839                 {
 840                     /* Pretend we displayed the picture, but don't destroy
 841                      * it since the decoder might still need it. */
 842                     p_picture->i_status = DISPLAYED_PICTURE;
 843                 }
 844                 else
 845                 {
 846                     /* Destroy the picture without displaying it */
 847                     p_picture->i_status = DESTROYED_PICTURE;
 848                     p_vout->i_heap_size--;
 849                 }
 850                 msg_Warn( p_vout, "late picture skipped (%"PRId64")",
 851                                   current_date - display_date );
 852                 i_lost++;
 853                 vlc_mutex_unlock( &p_vout->picture_lock );
 854
 855                 continue;
 856             }
 857
 858             if( display_date >
 859                 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
 860             {
 861                 /* Picture is waaay too early: it will be destroyed */
 862                 vlc_mutex_lock( &p_vout->picture_lock );
 863                 if( p_picture->i_refcount )
 864                 {
 865                     /* Pretend we displayed the picture, but don't destroy
 866                      * it since the decoder might still need it. */
 867                     p_picture->i_status = DISPLAYED_PICTURE;
 868                 }
 869                 else
 870                 {
 871                     /* Destroy the picture without displaying it */
 872                     p_picture->i_status = DESTROYED_PICTURE;
 873                     p_vout->i_heap_size--;
 874                 }
 875                 i_lost++;
 876                 msg_Warn( p_vout, "vout warning: early picture skipped "
 877                           "(%"PRId64")", display_date - current_date
 878                           - p_vout->i_pts_delay );
 879                 vlc_mutex_unlock( &p_vout->picture_lock );
 880
 881                 continue;
 882             }
 883
 884             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 885             {
 886                 /* A picture is ready to be rendered, but its rendering date
 887                  * is far from the current one so the thread will perform an
 888                  * empty loop as if no picture were found. The picture state
 889                  * is unchanged */
 890                 p_picture    = NULL;
 891                 display_date = 0;
 892             }
 893             else if( p_picture == p_last_picture )
 894             {
 895                 /* We are asked to repeat the previous picture, but we first
 896                  * wait for a couple of idle loops */
 897                 if( i_idle_loops < 4 )
 898                 {
 899                     p_picture    = NULL;
 900                     display_date = 0;
 901                 }
 902                 else
 903                 {
 904                     /* We set the display date to something high, otherwise
 905                      * we'll have lots of problems with late pictures */
 906                     display_date = current_date + p_vout->render_time;
 907                 }
 908             }
 909         }
 910
 911         if( p_picture == NULL )
 912         {
 913             i_idle_loops++;
 914         }
 915
 916         if( p_picture )
 917         {
 918             p_picture = filter_chain_VideoFilter( p_vout->p_vf2_chain,
 919                                                   p_picture );
 920         }
 921
 922         if( p_picture && p_vout->b_snapshot )
 923         {
 924             p_vout->b_snapshot = false;
 925             vout_Snapshot( p_vout, p_picture );
 926         }
 927
 928         /*
 929          * Check for subpictures to display
 930          */
 931         if( display_date > 0 )
 932         {
 933             if( !p_input )
 934             {
 935                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 936                                            FIND_PARENT );
 937             }
 938             p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date,
 939             p_input ? var_GetBool( p_input, "state" ) == PAUSE_S : false );
 940             if( p_input )
 941                 vlc_object_release( p_input );
 942             p_input = NULL;
 943         }
 944
 945         /*
 946          * Perform rendering
 947          */
 948         i_displayed++;
 949         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
 950
 951         /*
 952          * Call the plugin-specific rendering method if there is one
 953          */
 954         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
 955         {
 956             /* Render the direct buffer returned by vout_RenderPicture */
 957             p_vout->pf_render( p_vout, p_directbuffer );
 958         }
 959
 960         /*
 961          * Sleep, wake up
 962          */
 963         if( display_date != 0 && p_directbuffer != NULL )
 964         {
 965             mtime_t current_render_time = mdate() - current_date;
 966             /* if render time is very large we don't include it in the mean */
 967             if( current_render_time < p_vout->render_time +
 968                 VOUT_DISPLAY_DELAY )
 969             {
 970                 /* Store render time using a sliding mean weighting to
 971                  * current value in a 3 to 1 ratio*/
 972                 p_vout->render_time *= 3;
 973                 p_vout->render_time += current_render_time;
 974                 p_vout->render_time >>= 2;
 975             }
 976         }
 977
 978         /* Give back change lock */
 979         vlc_mutex_unlock( &p_vout->change_lock );
 980
 981         vlc_object_unlock( p_vout );
 982
 983         /* Sleep a while or until a given date */
 984         if( display_date != 0 )
 985         {
 986             /* If there are filters in the chain, better give them the picture
 987              * in advance */
 988             if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 989             {
 990                 mwait( display_date - VOUT_MWAIT_TOLERANCE );
 991             }
 992         }
 993         else
 994         {
 995             msleep( VOUT_IDLE_SLEEP );
 996         }
 997
 998         /* On awakening, take back lock and send immediately picture
 999          * to display. */
1000         vlc_object_lock( p_vout );
1001         /* Note: vlc_object_alive() could be false here, and we
1002          * could be dead */
1003         vlc_mutex_lock( &p_vout->change_lock );
1004
1005         /*
1006          * Display the previously rendered picture
1007          */
1008         if( p_picture != NULL && p_directbuffer != NULL )
1009         {
1010             /* Display the direct buffer returned by vout_RenderPicture */
1011             if( p_vout->pf_display )
1012             {
1013                 p_vout->pf_display( p_vout, p_directbuffer );
1014             }
1015
1016             /* Tell the vout this was the last picture and that it does not
1017              * need to be forced anymore. */
1018             p_last_picture = p_picture;
1019             p_last_picture->b_force = 0;
1020         }
1021
1022         if( p_picture != NULL )
1023         {
1024             /* Reinitialize idle loop count */
1025             i_idle_loops = 0;
1026         }
1027
1028         /*
1029          * Check events and manage thread
1030          */
1031         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
1032         {
1033             /* A fatal error occurred, and the thread must terminate
1034              * immediately, without displaying anything - setting b_error to 1
1035              * causes the immediate end of the main while() loop. */
1036             // FIXME pf_end
1037             p_vout->b_error = 1;
1038         }
1039
1040         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
1041         {
1042             /* this must only happen when the vout plugin is incapable of
1043              * rescaling the picture itself. In this case we need to destroy
1044              * the current picture buffers and recreate new ones with the right
1045              * dimensions */
1046             int i;
1047
1048             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
1049
1050             p_vout->pf_end( p_vout );
1051             for( i = 0; i < I_OUTPUTPICTURES; i++ )
1052                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
1053
1054             I_OUTPUTPICTURES = 0;
1055             if( p_vout->pf_init( p_vout ) )
1056             {
1057                 msg_Err( p_vout, "cannot resize display" );
1058                 /* FIXME: pf_end will be called again in EndThread() */
1059                 p_vout->b_error = 1;
1060             }
1061
1062             /* Need to reinitialise the chroma plugin. Since we might need
1063              * resizing too and it's not sure that we already had it,
1064              * recreate the chroma plugin chain from scratch. */
1065             /* dionoea */
1066             if( !p_vout->b_direct )
1067             {
1068                 ChromaDestroy( p_vout );
1069
1070                 if( ChromaCreate( p_vout ) )
1071                 {
1072                     msg_Err( p_vout, "WOW THIS SUCKS BIG TIME!!!!!" );
1073                 }
1074             }
1075         }
1076
1077         if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1078         {
1079             /* This happens when the picture buffers need to be recreated.
1080              * This is useful on multimonitor displays for instance.
1081              *
1082              * Warning: This only works when the vout creates only 1 picture
1083              * buffer!! */
1084             p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1085
1086             if( !p_vout->b_direct )
1087                 ChromaDestroy( p_vout );
1088
1089             vlc_mutex_lock( &p_vout->picture_lock );
1090
1091             p_vout->pf_end( p_vout );
1092
1093             I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1094
1095             vlc_mutex_lock( &p_vout->change_lock ); // FIXME is that valid ?
1096             p_vout->b_error = InitThread( p_vout );
1097
1098             vlc_mutex_unlock( &p_vout->picture_lock );
1099         }
1100
1101         /* Check for "video filter2" changes */
1102         vlc_mutex_lock( &p_vout->vfilter_lock );
1103         if( p_vout->psz_vf2 )
1104         {
1105             es_format_t fmt;
1106
1107             es_format_Init( &fmt, VIDEO_ES, p_vout->fmt_render.i_chroma );
1108             fmt.video = p_vout->fmt_render;
1109             filter_chain_Reset( p_vout->p_vf2_chain, &fmt, &fmt );
1110
1111             if( filter_chain_AppendFromString( p_vout->p_vf2_chain,
1112                                                p_vout->psz_vf2 ) < 0 )
1113                 msg_Err( p_vout, "Video filter chain creation failed" );
1114
1115             free( p_vout->psz_vf2 );
1116             p_vout->psz_vf2 = NULL;
1117         }
1118         vlc_mutex_unlock( &p_vout->vfilter_lock );
1119     }
1120
1121
1122     if( p_input )
1123     {
1124         vlc_object_release( p_input );
1125     }
1126
1127     /*
1128      * Error loop - wait until the thread destruction is requested
1129      */
1130     if( p_vout->b_error )
1131     {
1132         ErrorThread( p_vout );
1133     }
1134
1135     /* End of thread */
1136     EndThread( p_vout );
1137     vlc_mutex_unlock( &p_vout->change_lock );
1138
1139     vlc_object_unlock( p_vout );
1140 }
1141
1142 /*****************************************************************************
1143  * ErrorThread: RunThread() error loop
1144  *****************************************************************************
1145  * This function is called when an error occurred during thread main's loop.
1146  * The thread can still receive feed, but must be ready to terminate as soon
1147  * as possible.
1148  *****************************************************************************/
1149 static void ErrorThread( vout_thread_t *p_vout )
1150 {
1151     /* Wait until a `die' order */
1152     while( !p_vout->b_die )
1153     {
1154         /* Sleep a while */
1155         msleep( VOUT_IDLE_SLEEP );
1156     }
1157 }
1158
1159 /*****************************************************************************
1160  * EndThread: thread destruction
1161  *****************************************************************************
1162  * This function is called when the thread ends after a sucessful
1163  * initialization. It frees all resources allocated by InitThread.
1164  * XXX You have to enter it with change_lock taken.
1165  *****************************************************************************/
1166 static void EndThread( vout_thread_t *p_vout )
1167 {
1168     int     i_index;                                        /* index in heap */
1169
1170 #ifdef STATS
1171     {
1172         struct tms cpu_usage;
1173         times( &cpu_usage );
1174
1175         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1176                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1177     }
1178 #endif
1179
1180     if( !p_vout->b_direct )
1181         ChromaDestroy( p_vout );
1182
1183     /* Destroy all remaining pictures */
1184     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1185     {
1186         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1187         {
1188             free( p_vout->p_picture[i_index].p_data_orig );
1189         }
1190     }
1191
1192     /* Destroy subpicture unit */
1193     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), false );
1194     spu_Destroy( p_vout->p_spu );
1195
1196     /* Destroy the video filters2 */
1197     filter_chain_Delete( p_vout->p_vf2_chain );
1198
1199     /* Destroy translation tables FIXME if b_error is set, it can already be done */
1200     p_vout->pf_end( p_vout );
1201 }
1202
1203 /* Thread helpers */
1204 static picture_t *ChromaGetPicture( filter_t *p_filter )
1205 {
1206     picture_t *p_pic = (picture_t *)p_filter->p_owner;
1207     p_filter->p_owner = NULL;
1208     return p_pic;
1209 }
1210
1211 static int ChromaCreate( vout_thread_t *p_vout )
1212 {
1213     filter_t *p_chroma;
1214
1215     /* Choose the best module */
1216     p_chroma = p_vout->p_chroma = vlc_object_create( p_vout, sizeof(filter_t) );
1217
1218     vlc_object_attach( p_chroma, p_vout );
1219
1220     /* TODO: Set the fmt_in and fmt_out stuff here */
1221     p_chroma->fmt_in.video = p_vout->fmt_render;
1222     p_chroma->fmt_out.video = p_vout->fmt_out;
1223
1224     p_chroma->fmt_out.video.i_rmask = p_vout->output.i_rmask;
1225     p_chroma->fmt_out.video.i_gmask = p_vout->output.i_gmask;
1226     p_chroma->fmt_out.video.i_bmask = p_vout->output.i_bmask;
1227     p_chroma->fmt_out.video.i_rrshift = p_vout->output.i_rrshift;
1228     p_chroma->fmt_out.video.i_lrshift = p_vout->output.i_lrshift;
1229     p_chroma->fmt_out.video.i_rgshift = p_vout->output.i_rgshift;
1230     p_chroma->fmt_out.video.i_lgshift = p_vout->output.i_lgshift;
1231     p_chroma->fmt_out.video.i_rbshift = p_vout->output.i_rbshift;
1232     p_chroma->fmt_out.video.i_lbshift = p_vout->output.i_lbshift;
1233     p_chroma->p_module = module_Need( p_chroma, "video filter2", NULL, 0 );
1234
1235     if( p_chroma->p_module == NULL )
1236     {
1237         msg_Err( p_vout, "no chroma module for %4.4s to %4.4s i=%dx%d o=%dx%d",
1238                  (char*)&p_vout->render.i_chroma,
1239                  (char*)&p_vout->output.i_chroma,
1240                  p_chroma->fmt_in.video.i_width, p_chroma->fmt_in.video.i_height,
1241                  p_chroma->fmt_out.video.i_width, p_chroma->fmt_out.video.i_height
1242                  );
1243
1244         vlc_object_release( p_vout->p_chroma );
1245         p_vout->p_chroma = NULL;
1246         return VLC_EGENERIC;
1247     }
1248     p_chroma->pf_vout_buffer_new = ChromaGetPicture;
1249     return VLC_SUCCESS;
1250 }
1251
1252 static void ChromaDestroy( vout_thread_t *p_vout )
1253 {
1254     assert( !p_vout->b_direct );
1255
1256     if( !p_vout->p_chroma )
1257         return;
1258
1259     module_Unneed( p_vout->p_chroma, p_vout->p_chroma->p_module );
1260     vlc_object_release( p_vout->p_chroma );
1261     p_vout->p_chroma = NULL;
1262 }
1263
1264
1265
1266 /* following functions are local */
1267
1268 static int ReduceHeight( int i_ratio )
1269 {
1270     int i_dummy = VOUT_ASPECT_FACTOR;
1271     int i_pgcd  = 1;
1272
1273     if( !i_ratio )
1274     {
1275         return i_pgcd;
1276     }
1277
1278     /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1279     while( !(i_ratio & 1) && !(i_dummy & 1) )
1280     {
1281         i_ratio >>= 1;
1282         i_dummy >>= 1;
1283         i_pgcd  <<= 1;
1284     }
1285
1286     while( !(i_ratio % 3) && !(i_dummy % 3) )
1287     {
1288         i_ratio /= 3;
1289         i_dummy /= 3;
1290         i_pgcd  *= 3;
1291     }
1292
1293     while( !(i_ratio % 5) && !(i_dummy % 5) )
1294     {
1295         i_ratio /= 5;
1296         i_dummy /= 5;
1297         i_pgcd  *= 5;
1298     }
1299
1300     return i_pgcd;
1301 }
1302
1303 static void AspectRatio( int i_aspect, int *i_aspect_x, int *i_aspect_y )
1304 {
1305     unsigned int i_pgcd = ReduceHeight( i_aspect );
1306     *i_aspect_x = i_aspect / i_pgcd;
1307     *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
1308 }
1309
1310 /*****************************************************************************
1311  * BinaryLog: computes the base 2 log of a binary value
1312  *****************************************************************************
1313  * This functions is used by MaskToShift, to get a bit index from a binary
1314  * value.
1315  *****************************************************************************/
1316 static int BinaryLog( uint32_t i )
1317 {
1318     int i_log = 0;
1319
1320     if( i == 0 ) return -31337;
1321
1322     if( i & 0xffff0000 ) i_log += 16;
1323     if( i & 0xff00ff00 ) i_log += 8;
1324     if( i & 0xf0f0f0f0 ) i_log += 4;
1325     if( i & 0xcccccccc ) i_log += 2;
1326     if( i & 0xaaaaaaaa ) i_log += 1;
1327
1328     return i_log;
1329 }
1330
1331 /*****************************************************************************
1332  * MaskToShift: transform a color mask into right and left shifts
1333  *****************************************************************************
1334  * This function is used for obtaining color shifts from masks.
1335  *****************************************************************************/
1336 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1337 {
1338     uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
1339
1340     if( !i_mask )
1341     {
1342         *pi_left = *pi_right = 0;
1343         return;
1344     }
1345
1346     /* Get bits */
1347     i_low = i_high = i_mask;
1348
1349     i_low &= - (int32_t)i_low;          /* lower bit of the mask */
1350     i_high += i_low;                    /* higher bit of the mask */
1351
1352     /* Transform bits into an index. Also deal with i_high overflow, which
1353      * is faster than changing the BinaryLog code to handle 64 bit integers. */
1354     i_low =  BinaryLog (i_low);
1355     i_high = i_high ? BinaryLog (i_high) : 32;
1356
1357     /* Update pointers and return */
1358     *pi_left =   i_low;
1359     *pi_right = (8 - i_high + i_low);
1360 }
1361
1362 /*****************************************************************************
1363  * vout_VarCallback: generic callback for intf variables
1364  *****************************************************************************/
1365 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1366                       vlc_value_t oldval, vlc_value_t newval,
1367                       void *p_data )
1368 {
1369     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1370     vlc_value_t val;
1371     (void)psz_variable; (void)newval; (void)oldval; (void)p_data;
1372     val.b_bool = true;
1373     var_Set( p_vout, "intf-change", val );
1374     return VLC_SUCCESS;
1375 }
1376
1377 /*****************************************************************************
1378  * Helper thread for object variables callbacks.
1379  * Only used to avoid deadlocks when using the video embedded mode.
1380  *****************************************************************************/
1381 typedef struct suxor_thread_t
1382 {
1383     VLC_COMMON_MEMBERS
1384     input_thread_t *p_input;
1385
1386 } suxor_thread_t;
1387
1388 static void SuxorRestartVideoES( suxor_thread_t *p_this )
1389 {
1390     vlc_value_t val;
1391
1392     vlc_thread_ready( p_this );
1393
1394     /* Now restart current video stream */
1395     var_Get( p_this->p_input, "video-es", &val );
1396     if( val.i_int >= 0 )
1397     {
1398         vlc_value_t val_es;
1399         val_es.i_int = -VIDEO_ES;
1400         var_Set( p_this->p_input, "video-es", val_es );
1401         var_Set( p_this->p_input, "video-es", val );
1402     }
1403
1404     vlc_object_release( p_this->p_input );
1405
1406     vlc_object_release( p_this );
1407 }
1408
1409 /*****************************************************************************
1410  * object variables callbacks: a bunch of object variables are used by the
1411  * interfaces to interact with the vout.
1412  *****************************************************************************/
1413 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1414                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1415 {
1416     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1417     input_thread_t *p_input;
1418     vlc_value_t val;
1419
1420     char *psz_mode = newval.psz_string;
1421     char *psz_filter, *psz_deinterlace = NULL;
1422     (void)psz_cmd; (void)oldval; (void)p_data;
1423
1424     var_Get( p_vout, "vout-filter", &val );
1425     psz_filter = val.psz_string;
1426     if( psz_filter ) psz_deinterlace = strstr( psz_filter, "deinterlace" );
1427
1428     if( !psz_mode || !*psz_mode )
1429     {
1430         if( psz_deinterlace )
1431         {
1432             char *psz_src = psz_deinterlace + sizeof("deinterlace") - 1;
1433             if( psz_src[0] == ':' ) psz_src++;
1434             memmove( psz_deinterlace, psz_src, strlen(psz_src) + 1 );
1435         }
1436     }
1437     else if( !psz_deinterlace )
1438     {
1439         psz_filter = realloc( psz_filter, strlen( psz_filter ) +
1440                               sizeof(":deinterlace") );
1441         if( psz_filter && *psz_filter ) strcat( psz_filter, ":" );
1442         strcat( psz_filter, "deinterlace" );
1443     }
1444
1445     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1446                                                  FIND_PARENT );
1447     if( !p_input ) return VLC_EGENERIC;
1448
1449     if( psz_mode && *psz_mode )
1450     {
1451         /* Modify input as well because the vout might have to be restarted */
1452         val.psz_string = psz_mode;
1453         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1454         var_Set( p_input, "deinterlace-mode", val );
1455     }
1456     vlc_object_release( p_input );
1457
1458     val.b_bool = true;
1459     var_Set( p_vout, "intf-change", val );
1460
1461     val.psz_string = psz_filter;
1462     var_Set( p_vout, "vout-filter", val );
1463     free( psz_filter );
1464
1465     return VLC_SUCCESS;
1466 }
1467
1468 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1469                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1470 {
1471     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1472     input_thread_t *p_input;
1473     vlc_value_t val;
1474     (void)psz_cmd; (void)oldval; (void)p_data;
1475
1476     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1477                                                  FIND_PARENT );
1478     if (!p_input)
1479     {
1480         msg_Err( p_vout, "Input not found" );
1481         return( VLC_EGENERIC );
1482     }
1483
1484     val.b_bool = true;
1485     var_Set( p_vout, "intf-change", val );
1486
1487     /* Modify input as well because the vout might have to be restarted */
1488     val.psz_string = newval.psz_string;
1489     var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1490
1491     var_Set( p_input, "vout-filter", val );
1492
1493     /* Now restart current video stream */
1494     var_Get( p_input, "video-es", &val );
1495     if( val.i_int >= 0 )
1496     {
1497         suxor_thread_t *p_suxor =
1498             vlc_object_create( p_vout, sizeof(suxor_thread_t) );
1499         p_suxor->p_input = p_input;
1500         p_vout->b_filter_change = true;
1501         vlc_object_yield( p_input );
1502         vlc_thread_create( p_suxor, "suxor", SuxorRestartVideoES,
1503                            VLC_THREAD_PRIORITY_LOW, false );
1504     }
1505
1506     vlc_object_release( p_input );
1507
1508     return VLC_SUCCESS;
1509 }
1510
1511 /*****************************************************************************
1512  * Video Filter2 stuff
1513  *****************************************************************************/
1514 static int VideoFilter2Callback( vlc_object_t *p_this, char const *psz_cmd,
1515                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1516 {
1517     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1518     (void)psz_cmd; (void)oldval; (void)p_data;
1519
1520     vlc_mutex_lock( &p_vout->vfilter_lock );
1521     p_vout->psz_vf2 = strdup( newval.psz_string );
1522     vlc_mutex_unlock( &p_vout->vfilter_lock );
1523
1524     return VLC_SUCCESS;
1525 }
1526
1527 static void DisplayTitleOnOSD( vout_thread_t *p_vout )
1528 {
1529     input_thread_t *p_input;
1530     mtime_t i_now, i_stop;
1531
1532     p_input = (input_thread_t *)vlc_object_find( p_vout,
1533               VLC_OBJECT_INPUT, FIND_ANYWHERE );
1534     if( p_input )
1535     {
1536         i_now = mdate();
1537         i_stop = i_now + (mtime_t)(p_vout->i_title_timeout * 1000);
1538         char *psz_nowplaying =
1539             input_item_GetNowPlaying( input_GetItem( p_input ) );
1540         char *psz_artist = input_item_GetArtist( input_GetItem( p_input ) );
1541         char *psz_name = input_item_GetTitle( input_GetItem( p_input ) );
1542         if( EMPTY_STR( psz_name ) )
1543         {
1544             free( psz_name );
1545             psz_name = input_item_GetName( input_GetItem( p_input ) );
1546         }
1547         if( !EMPTY_STR( psz_nowplaying ) )
1548         {
1549             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1550                                    psz_nowplaying, NULL,
1551                                    p_vout->i_title_position,
1552                                    30 + p_vout->fmt_in.i_width
1553                                       - p_vout->fmt_in.i_visible_width
1554                                       - p_vout->fmt_in.i_x_offset,
1555                                    20 + p_vout->fmt_in.i_y_offset,
1556                                    i_now, i_stop );
1557         }
1558         else if( !EMPTY_STR( psz_artist ) )
1559         {
1560             char *psz_string = NULL;
1561             if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
1562             {
1563                 vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1564                                        psz_string, NULL,
1565                                        p_vout->i_title_position,
1566                                        30 + p_vout->fmt_in.i_width
1567                                           - p_vout->fmt_in.i_visible_width
1568                                           - p_vout->fmt_in.i_x_offset,
1569                                        20 + p_vout->fmt_in.i_y_offset,
1570                                        i_now, i_stop );
1571                 free( psz_string );
1572             }
1573         }
1574         else
1575         {
1576             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1577                                    psz_name, NULL,
1578                                    p_vout->i_title_position,
1579                                    30 + p_vout->fmt_in.i_width
1580                                       - p_vout->fmt_in.i_visible_width
1581                                       - p_vout->fmt_in.i_x_offset,
1582                                    20 + p_vout->fmt_in.i_y_offset,
1583                                    i_now, i_stop );
1584         }
1585         vlc_object_release( p_input );
1586         free( psz_artist );
1587         free( psz_name );
1588         free( psz_nowplaying );
1589     }
1590 }
1591