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     CleanThread       ( vout_thread_t * );
  69 static void     EndThread         ( vout_thread_t * );
  70
  71 static void     AspectRatio       ( int, int *, int * );
  72 static int      BinaryLog         ( uint32_t );
  73 static void     MaskToShift       ( int *, int *, uint32_t );
  74
  75 static void     vout_Destructor   ( vlc_object_t * p_this );
  76
  77 /* Object variables callbacks */
  78 static int DeinterlaceCallback( vlc_object_t *, char const *,
  79                                 vlc_value_t, vlc_value_t, void * );
  80 static int FilterCallback( vlc_object_t *, char const *,
  81                            vlc_value_t, vlc_value_t, void * );
  82 static int VideoFilter2Callback( vlc_object_t *, char const *,
  83                                  vlc_value_t, vlc_value_t, void * );
  84
  85 /* From vout_intf.c */
  86 int vout_Snapshot( vout_thread_t *, picture_t * );
  87
  88 /* Display media title in OSD */
  89 static void DisplayTitleOnOSD( vout_thread_t *p_vout );
  90
  91 /*****************************************************************************
  92  * Video Filter2 functions
  93  *****************************************************************************/
  94 static picture_t *video_new_buffer_filter( filter_t *p_filter )
  95 {
  96     picture_t *p_picture;
  97     vout_thread_t *p_vout = (vout_thread_t*)p_filter->p_owner;
  98
  99     p_picture = vout_CreatePicture( p_vout, 0, 0, 0 );
 100
 101     return p_picture;
 102 }
 103
 104 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
 105 {
 106     vout_DestroyPicture( (vout_thread_t*)p_filter->p_owner, p_pic );
 107 }
 108
 109 static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
 110 {
 111     p_filter->pf_vout_buffer_new = video_new_buffer_filter;
 112     p_filter->pf_vout_buffer_del = video_del_buffer_filter;
 113     p_filter->p_owner = p_data; /* p_vout */
 114     return VLC_SUCCESS;
 115 }
 116
 117 /*****************************************************************************
 118  * vout_Request: find a video output thread, create one, or destroy one.
 119  *****************************************************************************
 120  * This function looks for a video output thread matching the current
 121  * properties. If not found, it spawns a new one.
 122  *****************************************************************************/
 123 vout_thread_t *__vout_Request( vlc_object_t *p_this, vout_thread_t *p_vout,
 124                                video_format_t *p_fmt )
 125 {
 126     if( !p_fmt )
 127     {
 128         /* Video output is no longer used.
 129          * TODO: support for reusing video outputs with proper _thread-safe_
 130          * reference handling. */
 131         if( p_vout )
 132         {
 133             spu_Attach( p_vout->p_spu, p_this, false );
 134             vlc_object_release( p_vout );
 135         }
 136         return NULL;
 137     }
 138
 139     /* If a video output was provided, lock it, otherwise look for one. */
 140     if( p_vout )
 141     {
 142         vlc_object_yield( p_vout );
 143     }
 144
 145     /* TODO: find a suitable unused video output */
 146
 147     /* If we now have a video output, check it has the right properties */
 148     if( p_vout )
 149     {
 150         char *psz_filter_chain;
 151         vlc_value_t val;
 152
 153         /* We don't directly check for the "vout-filter" variable for obvious
 154          * performance reasons. */
 155         if( p_vout->b_filter_change )
 156         {
 157             var_Get( p_vout, "vout-filter", &val );
 158             psz_filter_chain = val.psz_string;
 159
 160             if( psz_filter_chain && !*psz_filter_chain )
 161             {
 162                 free( psz_filter_chain );
 163                 psz_filter_chain = NULL;
 164             }
 165             if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
 166             {
 167                 free( p_vout->psz_filter_chain );
 168                 p_vout->psz_filter_chain = NULL;
 169             }
 170
 171             if( !psz_filter_chain && !p_vout->psz_filter_chain )
 172             {
 173                 p_vout->b_filter_change = false;
 174             }
 175
 176             free( psz_filter_chain );
 177         }
 178
 179         if( ( p_vout->fmt_render.i_width != p_fmt->i_width ) ||
 180             ( p_vout->fmt_render.i_height != p_fmt->i_height ) ||
 181             ( p_vout->fmt_render.i_aspect != p_fmt->i_aspect ) ||
 182             p_vout->b_filter_change )
 183         {
 184             /* We are not interested in this format, close this vout */
 185             vlc_object_release( p_vout );
 186             vlc_object_release( p_vout );
 187             p_vout = NULL;
 188         }
 189         else
 190         {
 191             /* This video output is cool! Hijack it. */
 192             spu_Attach( p_vout->p_spu, p_this, true );
 193             vlc_object_attach( p_vout, p_this );
 194             if( p_vout->b_title_show )
 195                 DisplayTitleOnOSD( p_vout );
 196             vlc_object_release( p_vout );
 197         }
 198     }
 199
 200     if( !p_vout )
 201     {
 202         msg_Dbg( p_this, "no usable vout present, spawning one" );
 203
 204         p_vout = vout_Create( p_this, p_fmt );
 205     }
 206
 207     return p_vout;
 208 }
 209
 210 /*****************************************************************************
 211  * vout_Create: creates a new video output thread
 212  *****************************************************************************
 213  * This function creates a new video output thread, and returns a pointer
 214  * to its description. On error, it returns NULL.
 215  *****************************************************************************/
 216 vout_thread_t * __vout_Create( vlc_object_t *p_parent, video_format_t *p_fmt )
 217 {
 218     vout_thread_t  * p_vout;                            /* thread descriptor */
 219     input_thread_t * p_input_thread;
 220     int              i_index;                               /* loop variable */
 221     vlc_value_t      val, text;
 222
 223     unsigned int i_width = p_fmt->i_width;
 224     unsigned int i_height = p_fmt->i_height;
 225     vlc_fourcc_t i_chroma = p_fmt->i_chroma;
 226     unsigned int i_aspect = p_fmt->i_aspect;
 227
 228     config_chain_t *p_cfg;
 229     char *psz_parser;
 230     char *psz_name;
 231
 232     /* Allocate descriptor */
 233     static const char typename[] = "video output";
 234     p_vout = vlc_custom_create( p_parent, sizeof( *p_vout ), VLC_OBJECT_VOUT,
 235                                 typename );
 236     if( p_vout == NULL )
 237         return NULL;
 238
 239     /* Initialize pictures - translation tables and functions
 240      * will be initialized later in InitThread */
 241     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
 242     {
 243         p_vout->p_picture[i_index].pf_lock = NULL;
 244         p_vout->p_picture[i_index].pf_unlock = NULL;
 245         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 246         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 247         p_vout->p_picture[i_index].b_slow   = 0;
 248     }
 249
 250     /* No images in the heap */
 251     p_vout->i_heap_size = 0;
 252
 253     /* Initialize the rendering heap */
 254     I_RENDERPICTURES = 0;
 255
 256     vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
 257                  p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 258     p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
 259     p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
 260
 261     p_vout->render.i_width    = i_width;
 262     p_vout->render.i_height   = i_height;
 263     p_vout->render.i_chroma   = i_chroma;
 264     p_vout->render.i_aspect   = i_aspect;
 265
 266     p_vout->render.i_rmask    = 0;
 267     p_vout->render.i_gmask    = 0;
 268     p_vout->render.i_bmask    = 0;
 269
 270     p_vout->render.i_last_used_pic = -1;
 271     p_vout->render.b_allow_modify_pics = 1;
 272
 273     /* Zero the output heap */
 274     I_OUTPUTPICTURES = 0;
 275     p_vout->output.i_width    = 0;
 276     p_vout->output.i_height   = 0;
 277     p_vout->output.i_chroma   = 0;
 278     p_vout->output.i_aspect   = 0;
 279
 280     p_vout->output.i_rmask    = 0;
 281     p_vout->output.i_gmask    = 0;
 282     p_vout->output.i_bmask    = 0;
 283
 284     /* Initialize misc stuff */
 285     p_vout->i_changes    = 0;
 286     p_vout->f_gamma      = 0;
 287     p_vout->b_grayscale  = 0;
 288     p_vout->b_info       = 0;
 289     p_vout->b_interface  = 0;
 290     p_vout->b_scale      = 1;
 291     p_vout->b_fullscreen = 0;
 292     p_vout->i_alignment  = 0;
 293     p_vout->render_time  = 10;
 294     p_vout->c_fps_samples = 0;
 295     p_vout->b_filter_change = 0;
 296     p_vout->pf_control = NULL;
 297     p_vout->p_window = NULL;
 298     p_vout->i_par_num = p_vout->i_par_den = 1;
 299
 300     /* Initialize locks */
 301     vlc_mutex_init( &p_vout->picture_lock );
 302     vlc_mutex_init( &p_vout->change_lock );
 303     vlc_mutex_init( &p_vout->vfilter_lock );
 304
 305     /* Mouse coordinates */
 306     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 307     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 308     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 309     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 310     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 311
 312     /* Initialize subpicture unit */
 313     p_vout->p_spu = spu_Create( p_vout );
 314     spu_Attach( p_vout->p_spu, p_parent, true );
 315
 316     /* Attach the new object now so we can use var inheritance below */
 317     vlc_object_attach( p_vout, p_parent );
 318
 319     spu_Init( p_vout->p_spu );
 320
 321     /* Take care of some "interface/control" related initialisations */
 322     vout_IntfInit( p_vout );
 323
 324     /* If the parent is not a VOUT object, that means we are at the start of
 325      * the video output pipe */
 326     if( p_parent->i_object_type != VLC_OBJECT_VOUT )
 327     {
 328         /* Look for the default filter configuration */
 329         p_vout->psz_filter_chain =
 330             var_CreateGetStringCommand( p_vout, "vout-filter" );
 331
 332         /* Apply video filter2 objects on the first vout */
 333         p_vout->psz_vf2 =
 334             var_CreateGetStringCommand( p_vout, "video-filter" );
 335     }
 336     else
 337     {
 338         /* continue the parent's filter chain */
 339         char *psz_tmp;
 340
 341         /* Ugly hack to jump to our configuration chain */
 342         p_vout->psz_filter_chain
 343             = ((vout_thread_t *)p_parent)->psz_filter_chain;
 344         p_vout->psz_filter_chain
 345             = config_ChainCreate( &psz_tmp, &p_cfg, p_vout->psz_filter_chain );
 346         config_ChainDestroy( p_cfg );
 347         free( psz_tmp );
 348
 349         /* Create a video filter2 var ... but don't inherit values */
 350         var_Create( p_vout, "video-filter",
 351                     VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 352         p_vout->psz_vf2 = var_GetString( p_vout, "video-filter" );
 353     }
 354
 355     var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
 356     p_vout->p_vf2_chain = filter_chain_New( p_vout, "video filter2",
 357         false, video_filter_buffer_allocation_init, NULL, p_vout );
 358
 359     /* Choose the video output module */
 360     if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 361     {
 362         var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 363         var_Get( p_vout, "vout", &val );
 364         psz_parser = val.psz_string;
 365     }
 366     else
 367     {
 368         psz_parser = strdup( p_vout->psz_filter_chain );
 369     }
 370
 371     /* Create the vout thread */
 372     config_ChainCreate( &psz_name, &p_cfg, psz_parser );
 373     free( psz_parser );
 374     p_vout->p_cfg = p_cfg;
 375     p_vout->p_module = module_Need( p_vout,
 376         ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
 377         "video filter" : "video output", psz_name, p_vout->psz_filter_chain && *p_vout->psz_filter_chain );
 378     free( psz_name );
 379
 380     if( p_vout->p_module == NULL )
 381     {
 382         msg_Err( p_vout, "no suitable vout module" );
 383         // FIXME it's ugly but that's exactly the function that need to be called.
 384         EndThread( p_vout );
 385         vlc_object_detach( p_vout );
 386         vlc_object_release( p_vout );
 387         return NULL;
 388     }
 389
 390     /* Create a few object variables for interface interaction */
 391     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
 392     text.psz_string = _("Deinterlace");
 393     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
 394     val.psz_string = (char *)""; text.psz_string = _("Disable");
 395     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 396     val.psz_string = (char *)"discard"; text.psz_string = _("Discard");
 397     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 398     val.psz_string = (char *)"blend"; text.psz_string = _("Blend");
 399     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 400     val.psz_string = (char *)"mean"; text.psz_string = _("Mean");
 401     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 402     val.psz_string = (char *)"bob"; text.psz_string = _("Bob");
 403     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 404     val.psz_string = (char *)"linear"; text.psz_string = _("Linear");
 405     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 406     val.psz_string = (char *)"x"; text.psz_string = (char *)"X";
 407     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 408
 409     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 410     {
 411         var_Set( p_vout, "deinterlace", val );
 412         free( val.psz_string );
 413     }
 414     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 415
 416     var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 417     text.psz_string = _("Filters");
 418     var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
 419     var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
 420
 421     /* Calculate delay created by internal caching */
 422     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 423                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 424     if( p_input_thread )
 425     {
 426         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 427         vlc_object_release( p_input_thread );
 428     }
 429     else
 430     {
 431         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 432     }
 433
 434     if( vlc_thread_create( p_vout, "video output", RunThread,
 435                            VLC_THREAD_PRIORITY_OUTPUT, true ) )
 436     {
 437         module_Unneed( p_vout, p_vout->p_module );
 438         vlc_object_release( p_vout );
 439         return NULL;
 440     }
 441
 442     vlc_object_set_destructor( p_vout, vout_Destructor );
 443
 444     if( p_vout->b_error )
 445     {
 446         msg_Err( p_vout, "video output creation failed" );
 447
 448         /* Make sure the thread is destroyed and data released */
 449         vlc_object_release( p_vout );
 450         return NULL;
 451     }
 452
 453     return p_vout;
 454 }
 455
 456 static void vout_Destructor( vlc_object_t * p_this )
 457 {
 458     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 459
 460     /* Destroy the locks */
 461     vlc_mutex_destroy( &p_vout->picture_lock );
 462     vlc_mutex_destroy( &p_vout->change_lock );
 463     vlc_mutex_destroy( &p_vout->vfilter_lock );
 464
 465     /* Release the module */
 466     if( p_vout->p_module )
 467     {
 468         module_Unneed( p_vout, p_vout->p_module );
 469     }
 470
 471     free( p_vout->psz_filter_chain );
 472
 473     config_ChainDestroy( p_vout->p_cfg );
 474
 475 #ifndef __APPLE__
 476     vout_thread_t *p_another_vout;
 477
 478     /* This is a dirty hack mostly for Linux, where there is no way to get the
 479      * GUI back if you closed it while playing video. This is solved in
 480      * Mac OS X, where we have this novelty called menubar, that will always
 481      * allow you access to the applications main functionality. They should try
 482      * that on linux sometime. */
 483     p_another_vout = vlc_object_find( p_this->p_libvlc,
 484                                       VLC_OBJECT_VOUT, FIND_ANYWHERE );
 485     if( p_another_vout == NULL )
 486         var_SetBool( p_this->p_libvlc, "intf-show", true );
 487     else
 488         vlc_object_release( p_another_vout );
 489 #endif
 490 }
 491
 492 /*****************************************************************************
 493  * InitThread: initialize video output thread
 494  *****************************************************************************
 495  * This function is called from RunThread and performs the second step of the
 496  * initialization. It returns 0 on success. Note that the thread's flag are not
 497  * modified inside this function.
 498  * XXX You have to enter it with change_lock taken.
 499  *****************************************************************************/
 500 static int ChromaCreate( vout_thread_t *p_vout );
 501 static void ChromaDestroy( vout_thread_t *p_vout );
 502
 503 static int InitThread( vout_thread_t *p_vout )
 504 {
 505     int i, i_aspect_x, i_aspect_y;
 506
 507 #ifdef STATS
 508     p_vout->c_loops = 0;
 509 #endif
 510
 511     /* Initialize output method, it allocates direct buffers for us */
 512     if( p_vout->pf_init( p_vout ) )
 513         return VLC_EGENERIC;
 514
 515     if( !I_OUTPUTPICTURES )
 516     {
 517         msg_Err( p_vout, "plugin was unable to allocate at least "
 518                          "one direct buffer" );
 519         p_vout->pf_end( p_vout );
 520         return VLC_EGENERIC;
 521     }
 522
 523     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 524     {
 525         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 526                          "our internal buffers must have overflown." );
 527         p_vout->pf_end( p_vout );
 528         return VLC_EGENERIC;
 529     }
 530
 531     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 532
 533     AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );
 534
 535     msg_Dbg( p_vout, "picture in %ix%i (%i,%i,%ix%i), "
 536              "chroma %4.4s, ar %i:%i, sar %i:%i",
 537              p_vout->fmt_render.i_width, p_vout->fmt_render.i_height,
 538              p_vout->fmt_render.i_x_offset, p_vout->fmt_render.i_y_offset,
 539              p_vout->fmt_render.i_visible_width,
 540              p_vout->fmt_render.i_visible_height,
 541              (char*)&p_vout->fmt_render.i_chroma,
 542              i_aspect_x, i_aspect_y,
 543              p_vout->fmt_render.i_sar_num, p_vout->fmt_render.i_sar_den );
 544
 545     AspectRatio( p_vout->fmt_in.i_aspect, &i_aspect_x, &i_aspect_y );
 546
 547     msg_Dbg( p_vout, "picture user %ix%i (%i,%i,%ix%i), "
 548              "chroma %4.4s, ar %i:%i, sar %i:%i",
 549              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 550              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 551              p_vout->fmt_in.i_visible_width,
 552              p_vout->fmt_in.i_visible_height,
 553              (char*)&p_vout->fmt_in.i_chroma,
 554              i_aspect_x, i_aspect_y,
 555              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 556
 557     if( !p_vout->fmt_out.i_width || !p_vout->fmt_out.i_height )
 558     {
 559         p_vout->fmt_out.i_width = p_vout->fmt_out.i_visible_width =
 560             p_vout->output.i_width;
 561         p_vout->fmt_out.i_height = p_vout->fmt_out.i_visible_height =
 562             p_vout->output.i_height;
 563         p_vout->fmt_out.i_x_offset =  p_vout->fmt_out.i_y_offset = 0;
 564
 565         p_vout->fmt_out.i_aspect = p_vout->output.i_aspect;
 566         p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 567     }
 568     if( !p_vout->fmt_out.i_sar_num || !p_vout->fmt_out.i_sar_num )
 569     {
 570         p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_aspect *
 571             p_vout->fmt_out.i_height;
 572         p_vout->fmt_out.i_sar_den = VOUT_ASPECT_FACTOR *
 573             p_vout->fmt_out.i_width;
 574     }
 575
 576     vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
 577                  p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
 578
 579     AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
 580
 581     msg_Dbg( p_vout, "picture out %ix%i (%i,%i,%ix%i), "
 582              "chroma %4.4s, ar %i:%i, sar %i:%i",
 583              p_vout->fmt_out.i_width, p_vout->fmt_out.i_height,
 584              p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
 585              p_vout->fmt_out.i_visible_width,
 586              p_vout->fmt_out.i_visible_height,
 587              (char*)&p_vout->fmt_out.i_chroma,
 588              i_aspect_x, i_aspect_y,
 589              p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den );
 590
 591     /* Calculate shifts from system-updated masks */
 592     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 593                  p_vout->output.i_rmask );
 594     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 595                  p_vout->output.i_gmask );
 596     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 597                  p_vout->output.i_bmask );
 598
 599     /* Check whether we managed to create direct buffers similar to
 600      * the render buffers, ie same size and chroma */
 601     if( ( p_vout->output.i_width == p_vout->render.i_width )
 602      && ( p_vout->output.i_height == p_vout->render.i_height )
 603      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 604     {
 605         /* Cool ! We have direct buffers, we can ask the decoder to
 606          * directly decode into them ! Map the first render buffers to
 607          * the first direct buffers, but keep the first direct buffer
 608          * for memcpy operations */
 609         p_vout->b_direct = 1;
 610
 611         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 612         {
 613             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 614                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 615                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 616             {
 617                 /* We have enough direct buffers so there's no need to
 618                  * try to use system memory buffers. */
 619                 break;
 620             }
 621             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 622             I_RENDERPICTURES++;
 623         }
 624
 625         msg_Dbg( p_vout, "direct render, mapping "
 626                  "render pictures 0-%i to system pictures 1-%i",
 627                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 628     }
 629     else
 630     {
 631         /* Rats... Something is wrong here, we could not find an output
 632          * plugin able to directly render what we decode. See if we can
 633          * find a chroma plugin to do the conversion */
 634         p_vout->b_direct = 0;
 635
 636         if( ChromaCreate( p_vout ) )
 637         {
 638             p_vout->pf_end( p_vout );
 639             return VLC_EGENERIC;
 640         }
 641
 642         msg_Dbg( p_vout, "indirect render, mapping "
 643                  "render pictures 0-%i to system pictures %i-%i",
 644                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 645                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 646
 647         /* Append render buffers after the direct buffers */
 648         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 649         {
 650             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 651             I_RENDERPICTURES++;
 652
 653             /* Check if we have enough render pictures */
 654             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 655                 break;
 656         }
 657     }
 658
 659     /* Link pictures back to their heap */
 660     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 661     {
 662         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 663     }
 664
 665     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 666     {
 667         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 668     }
 669
 670     return VLC_SUCCESS;
 671 }
 672
 673 /*****************************************************************************
 674  * RunThread: video output thread
 675  *****************************************************************************
 676  * Video output thread. This function does only returns when the thread is
 677  * terminated. It handles the pictures arriving in the video heap and the
 678  * display device events.
 679  *****************************************************************************/
 680 static void RunThread( vout_thread_t *p_vout)
 681 {
 682     int             i_index;                                /* index in heap */
 683     int             i_idle_loops = 0;  /* loops without displaying a picture */
 684     mtime_t         current_date;                            /* current date */
 685     mtime_t         display_date;                            /* display date */
 686
 687     picture_t *     p_picture;                            /* picture pointer */
 688     picture_t *     p_last_picture = NULL;                   /* last picture */
 689     picture_t *     p_directbuffer;              /* direct buffer to display */
 690
 691     subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
 692
 693     input_thread_t *p_input = NULL ;           /* Parent input, if it exists */
 694
 695     vlc_value_t     val;
 696     bool      b_drop_late;
 697
 698     int             i_displayed = 0, i_lost = 0, i_loops = 0;
 699
 700     /*
 701      * Initialize thread
 702      */
 703     vlc_mutex_lock( &p_vout->change_lock );
 704     p_vout->b_error = InitThread( p_vout );
 705
 706     var_Create( p_vout, "drop-late-frames", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 707     var_Get( p_vout, "drop-late-frames", &val );
 708     b_drop_late = val.b_bool;
 709
 710     /* signal the creation of the vout */
 711     vlc_thread_ready( p_vout );
 712
 713     if( p_vout->b_error )
 714     {
 715         EndThread( p_vout );
 716         vlc_mutex_unlock( &p_vout->change_lock );
 717         return;
 718     }
 719
 720     vlc_object_lock( p_vout );
 721
 722     if( p_vout->b_title_show )
 723         DisplayTitleOnOSD( p_vout );
 724
 725     /*
 726      * Main loop - it is not executed if an error occurred during
 727      * initialization
 728      */
 729     while( (vlc_object_alive( p_vout )) && (!p_vout->b_error) )
 730     {
 731         /* Initialize loop variables */
 732         p_picture = NULL;
 733         display_date = 0;
 734         current_date = mdate();
 735
 736         i_loops++;
 737             if( !p_input )
 738             {
 739                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 740                                            FIND_PARENT );
 741             }
 742             if( p_input )
 743             {
 744                 vlc_mutex_lock( &p_input->p->counters.counters_lock );
 745                 stats_UpdateInteger( p_vout, p_input->p->counters.p_lost_pictures,
 746                                      i_lost , NULL);
 747                 stats_UpdateInteger( p_vout,
 748                                      p_input->p->counters.p_displayed_pictures,
 749                                      i_displayed , NULL);
 750                 i_displayed = i_lost = 0;
 751                 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 752                 vlc_object_release( p_input );
 753                 p_input = NULL;
 754             }
 755 #if 0
 756         p_vout->c_loops++;
 757         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 758         {
 759             msg_Dbg( p_vout, "picture heap: %d/%d",
 760                      I_RENDERPICTURES, p_vout->i_heap_size );
 761         }
 762 #endif
 763
 764         /*
 765          * Find the picture to display (the one with the earliest date).
 766          * This operation does not need lock, since only READY_PICTUREs
 767          * are handled. */
 768         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 769         {
 770             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 771                 && ( (p_picture == NULL) ||
 772                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 773             {
 774                 p_picture = PP_RENDERPICTURE[i_index];
 775                 display_date = p_picture->date;
 776             }
 777         }
 778
 779         if( p_picture )
 780         {
 781             /* If we met the last picture, parse again to see whether there is
 782              * a more appropriate one. */
 783             if( p_picture == p_last_picture )
 784             {
 785                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 786                 {
 787                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 788                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 789                         && ((p_picture == p_last_picture) ||
 790                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 791                     {
 792                         p_picture = PP_RENDERPICTURE[i_index];
 793                         display_date = p_picture->date;
 794                     }
 795                 }
 796             }
 797
 798             /* If we found better than the last picture, destroy it */
 799             if( p_last_picture && p_picture != p_last_picture )
 800             {
 801                 vlc_mutex_lock( &p_vout->picture_lock );
 802                 if( p_last_picture->i_refcount )
 803                 {
 804                     p_last_picture->i_status = DISPLAYED_PICTURE;
 805                 }
 806                 else
 807                 {
 808                     p_last_picture->i_status = DESTROYED_PICTURE;
 809                     p_vout->i_heap_size--;
 810                 }
 811                 vlc_mutex_unlock( &p_vout->picture_lock );
 812                 p_last_picture = NULL;
 813             }
 814
 815             /* Compute FPS rate */
 816             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 817                 = display_date;
 818
 819             if( !p_picture->b_force &&
 820                 p_picture != p_last_picture &&
 821                 display_date < current_date + p_vout->render_time &&
 822                 b_drop_late )
 823             {
 824                 /* Picture is late: it will be destroyed and the thread
 825                  * will directly choose the next picture */
 826                 vlc_mutex_lock( &p_vout->picture_lock );
 827                 if( p_picture->i_refcount )
 828                 {
 829                     /* Pretend we displayed the picture, but don't destroy
 830                      * it since the decoder might still need it. */
 831                     p_picture->i_status = DISPLAYED_PICTURE;
 832                 }
 833                 else
 834                 {
 835                     /* Destroy the picture without displaying it */
 836                     p_picture->i_status = DESTROYED_PICTURE;
 837                     p_vout->i_heap_size--;
 838                 }
 839                 msg_Warn( p_vout, "late picture skipped (%"PRId64")",
 840                                   current_date - display_date );
 841                 i_lost++;
 842                 vlc_mutex_unlock( &p_vout->picture_lock );
 843
 844                 continue;
 845             }
 846
 847             if( display_date >
 848                 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
 849             {
 850                 /* Picture is waaay too early: it will be destroyed */
 851                 vlc_mutex_lock( &p_vout->picture_lock );
 852                 if( p_picture->i_refcount )
 853                 {
 854                     /* Pretend we displayed the picture, but don't destroy
 855                      * it since the decoder might still need it. */
 856                     p_picture->i_status = DISPLAYED_PICTURE;
 857                 }
 858                 else
 859                 {
 860                     /* Destroy the picture without displaying it */
 861                     p_picture->i_status = DESTROYED_PICTURE;
 862                     p_vout->i_heap_size--;
 863                 }
 864                 i_lost++;
 865                 msg_Warn( p_vout, "vout warning: early picture skipped "
 866                           "(%"PRId64")", display_date - current_date
 867                           - p_vout->i_pts_delay );
 868                 vlc_mutex_unlock( &p_vout->picture_lock );
 869
 870                 continue;
 871             }
 872
 873             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 874             {
 875                 /* A picture is ready to be rendered, but its rendering date
 876                  * is far from the current one so the thread will perform an
 877                  * empty loop as if no picture were found. The picture state
 878                  * is unchanged */
 879                 p_picture    = NULL;
 880                 display_date = 0;
 881             }
 882             else if( p_picture == p_last_picture )
 883             {
 884                 /* We are asked to repeat the previous picture, but we first
 885                  * wait for a couple of idle loops */
 886                 if( i_idle_loops < 4 )
 887                 {
 888                     p_picture    = NULL;
 889                     display_date = 0;
 890                 }
 891                 else
 892                 {
 893                     /* We set the display date to something high, otherwise
 894                      * we'll have lots of problems with late pictures */
 895                     display_date = current_date + p_vout->render_time;
 896                 }
 897             }
 898         }
 899
 900         if( p_picture == NULL )
 901         {
 902             i_idle_loops++;
 903         }
 904
 905         if( p_picture )
 906         {
 907             p_picture = filter_chain_VideoFilter( p_vout->p_vf2_chain,
 908                                                   p_picture );
 909         }
 910
 911         if( p_picture && p_vout->b_snapshot )
 912         {
 913             p_vout->b_snapshot = false;
 914             vout_Snapshot( p_vout, p_picture );
 915         }
 916
 917         /*
 918          * Check for subpictures to display
 919          */
 920         if( display_date > 0 )
 921         {
 922             if( !p_input )
 923             {
 924                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 925                                            FIND_PARENT );
 926             }
 927             p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date,
 928             p_input ? var_GetBool( p_input, "state" ) == PAUSE_S : false );
 929             if( p_input )
 930                 vlc_object_release( p_input );
 931             p_input = NULL;
 932         }
 933
 934         /*
 935          * Perform rendering
 936          */
 937         i_displayed++;
 938         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
 939
 940         /*
 941          * Call the plugin-specific rendering method if there is one
 942          */
 943         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
 944         {
 945             /* Render the direct buffer returned by vout_RenderPicture */
 946             p_vout->pf_render( p_vout, p_directbuffer );
 947         }
 948
 949         /*
 950          * Sleep, wake up
 951          */
 952         if( display_date != 0 && p_directbuffer != NULL )
 953         {
 954             mtime_t current_render_time = mdate() - current_date;
 955             /* if render time is very large we don't include it in the mean */
 956             if( current_render_time < p_vout->render_time +
 957                 VOUT_DISPLAY_DELAY )
 958             {
 959                 /* Store render time using a sliding mean weighting to
 960                  * current value in a 3 to 1 ratio*/
 961                 p_vout->render_time *= 3;
 962                 p_vout->render_time += current_render_time;
 963                 p_vout->render_time >>= 2;
 964             }
 965         }
 966
 967         /* Give back change lock */
 968         vlc_mutex_unlock( &p_vout->change_lock );
 969
 970         vlc_object_unlock( p_vout );
 971
 972         /* Sleep a while or until a given date */
 973         if( display_date != 0 )
 974         {
 975             /* If there are filters in the chain, better give them the picture
 976              * in advance */
 977             if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 978             {
 979                 mwait( display_date - VOUT_MWAIT_TOLERANCE );
 980             }
 981         }
 982         else
 983         {
 984             msleep( VOUT_IDLE_SLEEP );
 985         }
 986
 987         /* On awakening, take back lock and send immediately picture
 988          * to display. */
 989         vlc_object_lock( p_vout );
 990         /* Note: vlc_object_alive() could be false here, and we
 991          * could be dead */
 992         vlc_mutex_lock( &p_vout->change_lock );
 993
 994         /*
 995          * Display the previously rendered picture
 996          */
 997         if( p_picture != NULL && p_directbuffer != NULL )
 998         {
 999             /* Display the direct buffer returned by vout_RenderPicture */
1000             if( p_vout->pf_display )
1001             {
1002                 p_vout->pf_display( p_vout, p_directbuffer );
1003             }
1004
1005             /* Tell the vout this was the last picture and that it does not
1006              * need to be forced anymore. */
1007             p_last_picture = p_picture;
1008             p_last_picture->b_force = 0;
1009         }
1010
1011         if( p_picture != NULL )
1012         {
1013             /* Reinitialize idle loop count */
1014             i_idle_loops = 0;
1015         }
1016
1017         /*
1018          * Check events and manage thread
1019          */
1020         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
1021         {
1022             /* A fatal error occurred, and the thread must terminate
1023              * immediately, without displaying anything - setting b_error to 1
1024              * causes the immediate end of the main while() loop. */
1025             // FIXME pf_end
1026             p_vout->b_error = 1;
1027             break;
1028         }
1029
1030         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
1031         {
1032             /* this must only happen when the vout plugin is incapable of
1033              * rescaling the picture itself. In this case we need to destroy
1034              * the current picture buffers and recreate new ones with the right
1035              * dimensions */
1036             int i;
1037
1038             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
1039
1040             assert( !p_vout->b_direct );
1041
1042             ChromaDestroy( p_vout );
1043
1044             vlc_mutex_lock( &p_vout->picture_lock );
1045
1046             p_vout->pf_end( p_vout );
1047
1048             for( i = 0; i < I_OUTPUTPICTURES; i++ )
1049                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
1050
1051             I_OUTPUTPICTURES = 0;
1052
1053             if( p_vout->pf_init( p_vout ) )
1054             {
1055                 msg_Err( p_vout, "cannot resize display" );
1056                 /* FIXME: pf_end will be called again in EndThread() */
1057                 p_vout->b_error = 1;
1058             }
1059
1060             vlc_mutex_unlock( &p_vout->picture_lock );
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( ChromaCreate( p_vout ) )
1067             {
1068                 msg_Err( p_vout, "WOW THIS SUCKS BIG TIME!!!!!" );
1069                 p_vout->b_error = 1;
1070             }
1071             if( p_vout->b_error )
1072                 break;
1073         }
1074
1075         if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1076         {
1077             /* This happens when the picture buffers need to be recreated.
1078              * This is useful on multimonitor displays for instance.
1079              *
1080              * Warning: This only works when the vout creates only 1 picture
1081              * buffer!! */
1082             p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1083
1084             if( !p_vout->b_direct )
1085                 ChromaDestroy( p_vout );
1086
1087             vlc_mutex_lock( &p_vout->picture_lock );
1088
1089             p_vout->pf_end( p_vout );
1090
1091             I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1092
1093             p_vout->b_error = InitThread( p_vout );
1094             if( p_vout->b_error )
1095                 msg_Err( p_vout, "InitThread after VOUT_PICTURE_BUFFERS_CHANGE failed\n" );
1096
1097             vlc_mutex_unlock( &p_vout->picture_lock );
1098
1099             if( p_vout->b_error )
1100                 break;
1101         }
1102
1103         /* Check for "video filter2" changes */
1104         vlc_mutex_lock( &p_vout->vfilter_lock );
1105         if( p_vout->psz_vf2 )
1106         {
1107             es_format_t fmt;
1108
1109             es_format_Init( &fmt, VIDEO_ES, p_vout->fmt_render.i_chroma );
1110             fmt.video = p_vout->fmt_render;
1111             filter_chain_Reset( p_vout->p_vf2_chain, &fmt, &fmt );
1112
1113             if( filter_chain_AppendFromString( p_vout->p_vf2_chain,
1114                                                p_vout->psz_vf2 ) < 0 )
1115                 msg_Err( p_vout, "Video filter chain creation failed" );
1116
1117             free( p_vout->psz_vf2 );
1118             p_vout->psz_vf2 = NULL;
1119         }
1120         vlc_mutex_unlock( &p_vout->vfilter_lock );
1121     }
1122
1123
1124     if( p_input )
1125     {
1126         vlc_object_release( p_input );
1127     }
1128
1129     /*
1130      * Error loop - wait until the thread destruction is requested
1131      */
1132     if( p_vout->b_error )
1133         ErrorThread( p_vout );
1134
1135     /* End of thread */
1136     CleanThread( p_vout );
1137     EndThread( p_vout );
1138     vlc_mutex_unlock( &p_vout->change_lock );
1139
1140     vlc_object_unlock( p_vout );
1141 }
1142
1143 /*****************************************************************************
1144  * ErrorThread: RunThread() error loop
1145  *****************************************************************************
1146  * This function is called when an error occurred during thread main's loop.
1147  * The thread can still receive feed, but must be ready to terminate as soon
1148  * as possible.
1149  *****************************************************************************/
1150 static void ErrorThread( vout_thread_t *p_vout )
1151 {
1152     /* Wait until a `die' order */
1153     while( vlc_object_alive( p_vout ) )
1154         vlc_object_wait( p_vout );
1155 }
1156
1157 /*****************************************************************************
1158  * CleanThread: clean up after InitThread
1159  *****************************************************************************
1160  * This function is called after a sucessful
1161  * initialization. It frees all resources allocated by InitThread.
1162  * XXX You have to enter it with change_lock taken.
1163  *****************************************************************************/
1164 static void CleanThread( vout_thread_t *p_vout )
1165 {
1166     int     i_index;                                        /* index in heap */
1167
1168     if( !p_vout->b_direct )
1169         ChromaDestroy( p_vout );
1170
1171     /* Destroy all remaining pictures */
1172     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1173     {
1174         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1175         {
1176             free( p_vout->p_picture[i_index].p_data_orig );
1177         }
1178     }
1179
1180     /* Destroy translation tables */
1181     if( !p_vout->b_error )
1182         p_vout->pf_end( p_vout );
1183 }
1184
1185 /*****************************************************************************
1186  * EndThread: thread destruction
1187  *****************************************************************************
1188  * This function is called when the thread ends.
1189  * It frees all resources not allocated by InitThread.
1190  * XXX You have to enter it with change_lock taken.
1191  *****************************************************************************/
1192 static void EndThread( vout_thread_t *p_vout )
1193 {
1194 #ifdef STATS
1195     {
1196         struct tms cpu_usage;
1197         times( &cpu_usage );
1198
1199         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1200                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1201     }
1202 #endif
1203
1204     /* FIXME does that function *really* need to be called inside the thread ? */
1205
1206     /* Destroy subpicture unit */
1207     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), false );
1208     spu_Destroy( p_vout->p_spu );
1209
1210     /* Destroy the video filters2 */
1211     filter_chain_Delete( p_vout->p_vf2_chain );
1212 }
1213
1214 /* Thread helpers */
1215 static picture_t *ChromaGetPicture( filter_t *p_filter )
1216 {
1217     picture_t *p_pic = (picture_t *)p_filter->p_owner;
1218     p_filter->p_owner = NULL;
1219     return p_pic;
1220 }
1221
1222 static int ChromaCreate( vout_thread_t *p_vout )
1223 {
1224     filter_t *p_chroma;
1225
1226     /* Choose the best module */
1227     p_chroma = p_vout->p_chroma = vlc_object_create( p_vout, sizeof(filter_t) );
1228
1229     vlc_object_attach( p_chroma, p_vout );
1230
1231     /* TODO: Set the fmt_in and fmt_out stuff here */
1232     p_chroma->fmt_in.video = p_vout->fmt_render;
1233     p_chroma->fmt_out.video = p_vout->fmt_out;
1234
1235     p_chroma->fmt_out.video.i_rmask = p_vout->output.i_rmask;
1236     p_chroma->fmt_out.video.i_gmask = p_vout->output.i_gmask;
1237     p_chroma->fmt_out.video.i_bmask = p_vout->output.i_bmask;
1238     p_chroma->fmt_out.video.i_rrshift = p_vout->output.i_rrshift;
1239     p_chroma->fmt_out.video.i_lrshift = p_vout->output.i_lrshift;
1240     p_chroma->fmt_out.video.i_rgshift = p_vout->output.i_rgshift;
1241     p_chroma->fmt_out.video.i_lgshift = p_vout->output.i_lgshift;
1242     p_chroma->fmt_out.video.i_rbshift = p_vout->output.i_rbshift;
1243     p_chroma->fmt_out.video.i_lbshift = p_vout->output.i_lbshift;
1244     p_chroma->p_module = module_Need( p_chroma, "video filter2", NULL, 0 );
1245
1246     if( p_chroma->p_module == NULL )
1247     {
1248         msg_Err( p_vout, "no chroma module for %4.4s to %4.4s i=%dx%d o=%dx%d",
1249                  (char*)&p_vout->render.i_chroma,
1250                  (char*)&p_vout->output.i_chroma,
1251                  p_chroma->fmt_in.video.i_width, p_chroma->fmt_in.video.i_height,
1252                  p_chroma->fmt_out.video.i_width, p_chroma->fmt_out.video.i_height
1253                  );
1254
1255         vlc_object_release( p_vout->p_chroma );
1256         p_vout->p_chroma = NULL;
1257         return VLC_EGENERIC;
1258     }
1259     p_chroma->pf_vout_buffer_new = ChromaGetPicture;
1260     return VLC_SUCCESS;
1261 }
1262
1263 static void ChromaDestroy( vout_thread_t *p_vout )
1264 {
1265     assert( !p_vout->b_direct );
1266
1267     if( !p_vout->p_chroma )
1268         return;
1269
1270     module_Unneed( p_vout->p_chroma, p_vout->p_chroma->p_module );
1271     vlc_object_release( p_vout->p_chroma );
1272     p_vout->p_chroma = NULL;
1273 }
1274
1275
1276
1277 /* following functions are local */
1278
1279 static int ReduceHeight( int i_ratio )
1280 {
1281     int i_dummy = VOUT_ASPECT_FACTOR;
1282     int i_pgcd  = 1;
1283
1284     if( !i_ratio )
1285     {
1286         return i_pgcd;
1287     }
1288
1289     /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1290     while( !(i_ratio & 1) && !(i_dummy & 1) )
1291     {
1292         i_ratio >>= 1;
1293         i_dummy >>= 1;
1294         i_pgcd  <<= 1;
1295     }
1296
1297     while( !(i_ratio % 3) && !(i_dummy % 3) )
1298     {
1299         i_ratio /= 3;
1300         i_dummy /= 3;
1301         i_pgcd  *= 3;
1302     }
1303
1304     while( !(i_ratio % 5) && !(i_dummy % 5) )
1305     {
1306         i_ratio /= 5;
1307         i_dummy /= 5;
1308         i_pgcd  *= 5;
1309     }
1310
1311     return i_pgcd;
1312 }
1313
1314 static void AspectRatio( int i_aspect, int *i_aspect_x, int *i_aspect_y )
1315 {
1316     unsigned int i_pgcd = ReduceHeight( i_aspect );
1317     *i_aspect_x = i_aspect / i_pgcd;
1318     *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
1319 }
1320
1321 /*****************************************************************************
1322  * BinaryLog: computes the base 2 log of a binary value
1323  *****************************************************************************
1324  * This functions is used by MaskToShift, to get a bit index from a binary
1325  * value.
1326  *****************************************************************************/
1327 static int BinaryLog( uint32_t i )
1328 {
1329     int i_log = 0;
1330
1331     if( i == 0 ) return -31337;
1332
1333     if( i & 0xffff0000 ) i_log += 16;
1334     if( i & 0xff00ff00 ) i_log += 8;
1335     if( i & 0xf0f0f0f0 ) i_log += 4;
1336     if( i & 0xcccccccc ) i_log += 2;
1337     if( i & 0xaaaaaaaa ) i_log += 1;
1338
1339     return i_log;
1340 }
1341
1342 /*****************************************************************************
1343  * MaskToShift: transform a color mask into right and left shifts
1344  *****************************************************************************
1345  * This function is used for obtaining color shifts from masks.
1346  *****************************************************************************/
1347 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1348 {
1349     uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
1350
1351     if( !i_mask )
1352     {
1353         *pi_left = *pi_right = 0;
1354         return;
1355     }
1356
1357     /* Get bits */
1358     i_low = i_high = i_mask;
1359
1360     i_low &= - (int32_t)i_low;          /* lower bit of the mask */
1361     i_high += i_low;                    /* higher bit of the mask */
1362
1363     /* Transform bits into an index. Also deal with i_high overflow, which
1364      * is faster than changing the BinaryLog code to handle 64 bit integers. */
1365     i_low =  BinaryLog (i_low);
1366     i_high = i_high ? BinaryLog (i_high) : 32;
1367
1368     /* Update pointers and return */
1369     *pi_left =   i_low;
1370     *pi_right = (8 - i_high + i_low);
1371 }
1372
1373 /*****************************************************************************
1374  * vout_VarCallback: generic callback for intf variables
1375  *****************************************************************************/
1376 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1377                       vlc_value_t oldval, vlc_value_t newval,
1378                       void *p_data )
1379 {
1380     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1381     vlc_value_t val;
1382     (void)psz_variable; (void)newval; (void)oldval; (void)p_data;
1383     val.b_bool = true;
1384     var_Set( p_vout, "intf-change", val );
1385     return VLC_SUCCESS;
1386 }
1387
1388 /*****************************************************************************
1389  * Helper thread for object variables callbacks.
1390  * Only used to avoid deadlocks when using the video embedded mode.
1391  *****************************************************************************/
1392 typedef struct suxor_thread_t
1393 {
1394     VLC_COMMON_MEMBERS
1395     input_thread_t *p_input;
1396
1397 } suxor_thread_t;
1398
1399 static void SuxorRestartVideoES( suxor_thread_t *p_this )
1400 {
1401     /* Now restart current video stream */
1402     int val = var_GetInteger( p_this->p_input, "video-es" );
1403     if( val >= 0 )
1404     {
1405         var_SetInteger( p_this->p_input, "video-es", -VIDEO_ES );
1406         var_SetInteger( p_this->p_input, "video-es", val );
1407     }
1408
1409     vlc_object_release( p_this->p_input );
1410
1411     vlc_object_release( p_this );
1412 }
1413
1414 /*****************************************************************************
1415  * object variables callbacks: a bunch of object variables are used by the
1416  * interfaces to interact with the vout.
1417  *****************************************************************************/
1418 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1419                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1420 {
1421     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1422     input_thread_t *p_input;
1423     vlc_value_t val;
1424
1425     char *psz_mode = newval.psz_string;
1426     char *psz_filter, *psz_deinterlace = NULL;
1427     (void)psz_cmd; (void)oldval; (void)p_data;
1428
1429     var_Get( p_vout, "vout-filter", &val );
1430     psz_filter = val.psz_string;
1431     if( psz_filter ) psz_deinterlace = strstr( psz_filter, "deinterlace" );
1432
1433     if( !psz_mode || !*psz_mode )
1434     {
1435         if( psz_deinterlace )
1436         {
1437             char *psz_src = psz_deinterlace + sizeof("deinterlace") - 1;
1438             if( psz_src[0] == ':' ) psz_src++;
1439             memmove( psz_deinterlace, psz_src, strlen(psz_src) + 1 );
1440         }
1441     }
1442     else if( !psz_deinterlace )
1443     {
1444         psz_filter = realloc( psz_filter, strlen( psz_filter ) +
1445                               sizeof(":deinterlace") );
1446         if( psz_filter && *psz_filter ) strcat( psz_filter, ":" );
1447         strcat( psz_filter, "deinterlace" );
1448     }
1449
1450     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1451                                                  FIND_PARENT );
1452     if( !p_input ) return VLC_EGENERIC;
1453
1454     if( psz_mode && *psz_mode )
1455     {
1456         /* Modify input as well because the vout might have to be restarted */
1457         val.psz_string = psz_mode;
1458         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1459         var_Set( p_input, "deinterlace-mode", val );
1460     }
1461     vlc_object_release( p_input );
1462
1463     val.b_bool = true;
1464     var_Set( p_vout, "intf-change", val );
1465
1466     val.psz_string = psz_filter;
1467     var_Set( p_vout, "vout-filter", val );
1468     free( psz_filter );
1469
1470     return VLC_SUCCESS;
1471 }
1472
1473 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1474                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1475 {
1476     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1477     input_thread_t *p_input;
1478     vlc_value_t val;
1479     (void)psz_cmd; (void)oldval; (void)p_data;
1480
1481     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1482                                                  FIND_PARENT );
1483     if (!p_input)
1484     {
1485         msg_Err( p_vout, "Input not found" );
1486         return( VLC_EGENERIC );
1487     }
1488
1489     val.b_bool = true;
1490     var_Set( p_vout, "intf-change", val );
1491
1492     /* Modify input as well because the vout might have to be restarted */
1493     val.psz_string = newval.psz_string;
1494     var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1495
1496     var_Set( p_input, "vout-filter", val );
1497
1498     /* Now restart current video stream */
1499     var_Get( p_input, "video-es", &val );
1500     if( val.i_int >= 0 )
1501     {
1502         suxor_thread_t *p_suxor =
1503             vlc_object_create( p_vout, sizeof(suxor_thread_t) );
1504         p_suxor->p_input = p_input;
1505         p_vout->b_filter_change = true;
1506         vlc_object_yield( p_input );
1507         vlc_thread_create( p_suxor, "suxor", SuxorRestartVideoES,
1508                            VLC_THREAD_PRIORITY_LOW, false );
1509     }
1510
1511     vlc_object_release( p_input );
1512
1513     return VLC_SUCCESS;
1514 }
1515
1516 /*****************************************************************************
1517  * Video Filter2 stuff
1518  *****************************************************************************/
1519 static int VideoFilter2Callback( vlc_object_t *p_this, char const *psz_cmd,
1520                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1521 {
1522     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1523     (void)psz_cmd; (void)oldval; (void)p_data;
1524
1525     vlc_mutex_lock( &p_vout->vfilter_lock );
1526     p_vout->psz_vf2 = strdup( newval.psz_string );
1527     vlc_mutex_unlock( &p_vout->vfilter_lock );
1528
1529     return VLC_SUCCESS;
1530 }
1531
1532 static void DisplayTitleOnOSD( vout_thread_t *p_vout )
1533 {
1534     input_thread_t *p_input;
1535     mtime_t i_now, i_stop;
1536
1537     p_input = (input_thread_t *)vlc_object_find( p_vout,
1538               VLC_OBJECT_INPUT, FIND_ANYWHERE );
1539     if( p_input )
1540     {
1541         i_now = mdate();
1542         i_stop = i_now + (mtime_t)(p_vout->i_title_timeout * 1000);
1543         char *psz_nowplaying =
1544             input_item_GetNowPlaying( input_GetItem( p_input ) );
1545         char *psz_artist = input_item_GetArtist( input_GetItem( p_input ) );
1546         char *psz_name = input_item_GetTitle( input_GetItem( p_input ) );
1547         if( EMPTY_STR( psz_name ) )
1548         {
1549             free( psz_name );
1550             psz_name = input_item_GetName( input_GetItem( p_input ) );
1551         }
1552         if( !EMPTY_STR( psz_nowplaying ) )
1553         {
1554             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1555                                    psz_nowplaying, NULL,
1556                                    p_vout->i_title_position,
1557                                    30 + p_vout->fmt_in.i_width
1558                                       - p_vout->fmt_in.i_visible_width
1559                                       - p_vout->fmt_in.i_x_offset,
1560                                    20 + p_vout->fmt_in.i_y_offset,
1561                                    i_now, i_stop );
1562         }
1563         else if( !EMPTY_STR( psz_artist ) )
1564         {
1565             char *psz_string = NULL;
1566             if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
1567             {
1568                 vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1569                                        psz_string, NULL,
1570                                        p_vout->i_title_position,
1571                                        30 + p_vout->fmt_in.i_width
1572                                           - p_vout->fmt_in.i_visible_width
1573                                           - p_vout->fmt_in.i_x_offset,
1574                                        20 + p_vout->fmt_in.i_y_offset,
1575                                        i_now, i_stop );
1576                 free( psz_string );
1577             }
1578         }
1579         else
1580         {
1581             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1582                                    psz_name, NULL,
1583                                    p_vout->i_title_position,
1584                                    30 + p_vout->fmt_in.i_width
1585                                       - p_vout->fmt_in.i_visible_width
1586                                       - p_vout->fmt_in.i_x_offset,
1587                                    20 + p_vout->fmt_in.i_y_offset,
1588                                    i_now, i_stop );
1589         }
1590         vlc_object_release( p_input );
1591         free( psz_artist );
1592         free( psz_name );
1593         free( psz_nowplaying );
1594     }
1595 }
1596