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         /* Reattach video output to the instance before bailing out */
 129         if( p_vout )
 130         {
 131             spu_Attach( p_vout->p_spu, p_this, false );
 132             vlc_object_detach( p_vout );
 133             vlc_object_attach( p_vout, p_this->p_libvlc );
 134         }
 135         return NULL;
 136     }
 137
 138     /* If a video output was provided, lock it, otherwise look for one. */
 139     if( p_vout )
 140     {
 141         vlc_object_yield( p_vout );
 142     }
 143     else
 144     {
 145         p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD );
 146
 147         if( !p_vout )
 148         {
 149             p_vout = vlc_object_find( p_this->p_libvlc,
 150                                       VLC_OBJECT_VOUT, FIND_CHILD );
 151             /* only first children of p_input for unused vout */
 152             if( p_vout && p_vout->p_parent != VLC_OBJECT(p_this->p_libvlc) )
 153             {
 154                 vlc_object_release( p_vout );
 155                 p_vout = NULL;
 156             }
 157             if( p_vout )
 158                 vlc_object_detach( p_vout );    /* Remove it from the GC */
 159         }
 160     }
 161
 162     /* If we now have a video output, check it has the right properties */
 163     if( p_vout )
 164     {
 165         char *psz_filter_chain;
 166         vlc_value_t val;
 167
 168         /* We don't directly check for the "vout-filter" variable for obvious
 169          * performance reasons. */
 170         if( p_vout->b_filter_change )
 171         {
 172             var_Get( p_vout, "vout-filter", &val );
 173             psz_filter_chain = val.psz_string;
 174
 175             if( psz_filter_chain && !*psz_filter_chain )
 176             {
 177                 free( psz_filter_chain );
 178                 psz_filter_chain = NULL;
 179             }
 180             if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
 181             {
 182                 free( p_vout->psz_filter_chain );
 183                 p_vout->psz_filter_chain = NULL;
 184             }
 185
 186             if( !psz_filter_chain && !p_vout->psz_filter_chain )
 187             {
 188                 p_vout->b_filter_change = false;
 189             }
 190
 191             free( psz_filter_chain );
 192         }
 193
 194         if( ( p_vout->fmt_render.i_width != p_fmt->i_width ) ||
 195             ( p_vout->fmt_render.i_height != p_fmt->i_height ) ||
 196             ( p_vout->fmt_render.i_aspect != p_fmt->i_aspect ) ||
 197             p_vout->b_filter_change )
 198         {
 199             /* We are not interested in this format, close this vout */
 200             vlc_object_release( p_vout );
 201             vlc_object_release( p_vout );
 202             p_vout = NULL;
 203         }
 204         else
 205         {
 206             /* This video output is cool! Hijack it. */
 207             spu_Attach( p_vout->p_spu, p_this, true );
 208             vlc_object_attach( p_vout, p_this );
 209             if( p_vout->b_title_show )
 210                 DisplayTitleOnOSD( p_vout );
 211             vlc_object_release( p_vout );
 212         }
 213     }
 214
 215     if( !p_vout )
 216     {
 217         msg_Dbg( p_this, "no usable vout present, spawning one" );
 218
 219         p_vout = vout_Create( p_this, p_fmt );
 220     }
 221
 222     return p_vout;
 223 }
 224
 225 /*****************************************************************************
 226  * vout_Create: creates a new video output thread
 227  *****************************************************************************
 228  * This function creates a new video output thread, and returns a pointer
 229  * to its description. On error, it returns NULL.
 230  *****************************************************************************/
 231 vout_thread_t * __vout_Create( vlc_object_t *p_parent, video_format_t *p_fmt )
 232 {
 233     vout_thread_t  * p_vout;                            /* thread descriptor */
 234     input_thread_t * p_input_thread;
 235     int              i_index;                               /* loop variable */
 236     vlc_value_t      val, text;
 237
 238     unsigned int i_width = p_fmt->i_width;
 239     unsigned int i_height = p_fmt->i_height;
 240     vlc_fourcc_t i_chroma = p_fmt->i_chroma;
 241     unsigned int i_aspect = p_fmt->i_aspect;
 242
 243     config_chain_t *p_cfg;
 244     char *psz_parser;
 245     char *psz_name;
 246
 247     /* Allocate descriptor */
 248     static const char typename[] = "video output";
 249     p_vout = vlc_custom_create( p_parent, sizeof( *p_vout ), VLC_OBJECT_VOUT,
 250                                 typename );
 251     if( p_vout == NULL )
 252         return NULL;
 253
 254     /* Initialize pictures - translation tables and functions
 255      * will be initialized later in InitThread */
 256     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
 257     {
 258         p_vout->p_picture[i_index].pf_lock = NULL;
 259         p_vout->p_picture[i_index].pf_unlock = NULL;
 260         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 261         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 262         p_vout->p_picture[i_index].b_slow   = 0;
 263     }
 264
 265     /* No images in the heap */
 266     p_vout->i_heap_size = 0;
 267
 268     /* Initialize the rendering heap */
 269     I_RENDERPICTURES = 0;
 270
 271     vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
 272                  p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 273     p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
 274     p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
 275
 276     p_vout->render.i_width    = i_width;
 277     p_vout->render.i_height   = i_height;
 278     p_vout->render.i_chroma   = i_chroma;
 279     p_vout->render.i_aspect   = i_aspect;
 280
 281     p_vout->render.i_rmask    = 0;
 282     p_vout->render.i_gmask    = 0;
 283     p_vout->render.i_bmask    = 0;
 284
 285     p_vout->render.i_last_used_pic = -1;
 286     p_vout->render.b_allow_modify_pics = 1;
 287
 288     /* Zero the output heap */
 289     I_OUTPUTPICTURES = 0;
 290     p_vout->output.i_width    = 0;
 291     p_vout->output.i_height   = 0;
 292     p_vout->output.i_chroma   = 0;
 293     p_vout->output.i_aspect   = 0;
 294
 295     p_vout->output.i_rmask    = 0;
 296     p_vout->output.i_gmask    = 0;
 297     p_vout->output.i_bmask    = 0;
 298
 299     /* Initialize misc stuff */
 300     p_vout->i_changes    = 0;
 301     p_vout->f_gamma      = 0;
 302     p_vout->b_grayscale  = 0;
 303     p_vout->b_info       = 0;
 304     p_vout->b_interface  = 0;
 305     p_vout->b_scale      = 1;
 306     p_vout->b_fullscreen = 0;
 307     p_vout->i_alignment  = 0;
 308     p_vout->render_time  = 10;
 309     p_vout->c_fps_samples = 0;
 310     p_vout->b_filter_change = 0;
 311     p_vout->pf_control = NULL;
 312     p_vout->p_window = NULL;
 313     p_vout->i_par_num = p_vout->i_par_den = 1;
 314
 315     /* Initialize locks */
 316     vlc_mutex_init( &p_vout->picture_lock );
 317     vlc_mutex_init( &p_vout->change_lock );
 318     vlc_mutex_init( &p_vout->vfilter_lock );
 319
 320     /* Mouse coordinates */
 321     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 322     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 323     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 324     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 325     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 326
 327     /* Initialize subpicture unit */
 328     p_vout->p_spu = spu_Create( p_vout );
 329     spu_Attach( p_vout->p_spu, p_parent, true );
 330
 331     /* Attach the new object now so we can use var inheritance below */
 332     vlc_object_attach( p_vout, p_parent );
 333
 334     spu_Init( p_vout->p_spu );
 335
 336     /* Take care of some "interface/control" related initialisations */
 337     vout_IntfInit( p_vout );
 338
 339     /* If the parent is not a VOUT object, that means we are at the start of
 340      * the video output pipe */
 341     if( p_parent->i_object_type != VLC_OBJECT_VOUT )
 342     {
 343         /* Look for the default filter configuration */
 344         p_vout->psz_filter_chain =
 345             var_CreateGetStringCommand( p_vout, "vout-filter" );
 346
 347         /* Apply video filter2 objects on the first vout */
 348         p_vout->psz_vf2 =
 349             var_CreateGetStringCommand( p_vout, "video-filter" );
 350     }
 351     else
 352     {
 353         /* continue the parent's filter chain */
 354         char *psz_tmp;
 355
 356         /* Ugly hack to jump to our configuration chain */
 357         p_vout->psz_filter_chain
 358             = ((vout_thread_t *)p_parent)->psz_filter_chain;
 359         p_vout->psz_filter_chain
 360             = config_ChainCreate( &psz_tmp, &p_cfg, p_vout->psz_filter_chain );
 361         config_ChainDestroy( p_cfg );
 362         free( psz_tmp );
 363
 364         /* Create a video filter2 var ... but don't inherit values */
 365         var_Create( p_vout, "video-filter",
 366                     VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 367         p_vout->psz_vf2 = var_GetString( p_vout, "video-filter" );
 368     }
 369
 370     var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
 371     p_vout->p_vf2_chain = filter_chain_New( p_vout, "video filter2",
 372         false, video_filter_buffer_allocation_init, NULL, p_vout );
 373
 374     /* Choose the video output module */
 375     if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 376     {
 377         var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 378         var_Get( p_vout, "vout", &val );
 379         psz_parser = val.psz_string;
 380     }
 381     else
 382     {
 383         psz_parser = strdup( p_vout->psz_filter_chain );
 384     }
 385
 386     /* Create the vout thread */
 387     config_ChainCreate( &psz_name, &p_cfg, psz_parser );
 388     free( psz_parser );
 389     p_vout->p_cfg = p_cfg;
 390     p_vout->p_module = module_Need( p_vout,
 391         ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
 392         "video filter" : "video output", psz_name, p_vout->psz_filter_chain && *p_vout->psz_filter_chain );
 393     free( psz_name );
 394
 395     if( p_vout->p_module == NULL )
 396     {
 397         msg_Err( p_vout, "no suitable vout module" );
 398         // FIXME it's ugly but that's exactly the function that need to be called.
 399         EndThread( p_vout );
 400         vlc_object_detach( p_vout );
 401         vlc_object_release( p_vout );
 402         return NULL;
 403     }
 404
 405     /* Create a few object variables for interface interaction */
 406     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
 407     text.psz_string = _("Deinterlace");
 408     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
 409     val.psz_string = (char *)""; text.psz_string = _("Disable");
 410     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 411     val.psz_string = (char *)"discard"; text.psz_string = _("Discard");
 412     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 413     val.psz_string = (char *)"blend"; text.psz_string = _("Blend");
 414     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 415     val.psz_string = (char *)"mean"; text.psz_string = _("Mean");
 416     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 417     val.psz_string = (char *)"bob"; text.psz_string = _("Bob");
 418     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 419     val.psz_string = (char *)"linear"; text.psz_string = _("Linear");
 420     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 421     val.psz_string = (char *)"x"; text.psz_string = (char *)"X";
 422     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 423
 424     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 425     {
 426         var_Set( p_vout, "deinterlace", val );
 427         free( val.psz_string );
 428     }
 429     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 430
 431     var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 432     text.psz_string = _("Filters");
 433     var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
 434     var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
 435
 436     /* Calculate delay created by internal caching */
 437     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 438                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 439     if( p_input_thread )
 440     {
 441         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 442         vlc_object_release( p_input_thread );
 443     }
 444     else
 445     {
 446         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 447     }
 448
 449     if( vlc_thread_create( p_vout, "video output", RunThread,
 450                            VLC_THREAD_PRIORITY_OUTPUT, true ) )
 451     {
 452         module_Unneed( p_vout, p_vout->p_module );
 453         vlc_object_release( p_vout );
 454         return NULL;
 455     }
 456
 457     vlc_object_set_destructor( p_vout, vout_Destructor );
 458
 459     if( p_vout->b_error )
 460     {
 461         msg_Err( p_vout, "video output creation failed" );
 462
 463         /* Make sure the thread is destroyed and data released */
 464         vlc_object_release( p_vout );
 465         return NULL;
 466     }
 467
 468     return p_vout;
 469 }
 470
 471 static void vout_Destructor( vlc_object_t * p_this )
 472 {
 473     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 474
 475     /* Destroy the locks */
 476     vlc_mutex_destroy( &p_vout->picture_lock );
 477     vlc_mutex_destroy( &p_vout->change_lock );
 478     vlc_mutex_destroy( &p_vout->vfilter_lock );
 479
 480     /* Release the module */
 481     if( p_vout->p_module )
 482     {
 483         module_Unneed( p_vout, p_vout->p_module );
 484     }
 485
 486     free( p_vout->psz_filter_chain );
 487
 488     config_ChainDestroy( p_vout->p_cfg );
 489
 490 #ifndef __APPLE__
 491     vout_thread_t *p_another_vout;
 492
 493     /* This is a dirty hack mostly for Linux, where there is no way to get the
 494      * GUI back if you closed it while playing video. This is solved in
 495      * Mac OS X, where we have this novelty called menubar, that will always
 496      * allow you access to the applications main functionality. They should try
 497      * that on linux sometime. */
 498     p_another_vout = vlc_object_find( p_this->p_libvlc,
 499                                       VLC_OBJECT_VOUT, FIND_ANYWHERE );
 500     if( p_another_vout == NULL )
 501         var_SetBool( p_this->p_libvlc, "intf-show", true );
 502     else
 503         vlc_object_release( p_another_vout );
 504 #endif
 505 }
 506
 507 /*****************************************************************************
 508  * InitThread: initialize video output thread
 509  *****************************************************************************
 510  * This function is called from RunThread and performs the second step of the
 511  * initialization. It returns 0 on success. Note that the thread's flag are not
 512  * modified inside this function.
 513  * XXX You have to enter it with change_lock taken.
 514  *****************************************************************************/
 515 static int ChromaCreate( vout_thread_t *p_vout );
 516 static void ChromaDestroy( vout_thread_t *p_vout );
 517
 518 static int InitThread( vout_thread_t *p_vout )
 519 {
 520     int i, i_aspect_x, i_aspect_y;
 521
 522 #ifdef STATS
 523     p_vout->c_loops = 0;
 524 #endif
 525
 526     /* Initialize output method, it allocates direct buffers for us */
 527     if( p_vout->pf_init( p_vout ) )
 528         return VLC_EGENERIC;
 529
 530     if( !I_OUTPUTPICTURES )
 531     {
 532         msg_Err( p_vout, "plugin was unable to allocate at least "
 533                          "one direct buffer" );
 534         p_vout->pf_end( p_vout );
 535         return VLC_EGENERIC;
 536     }
 537
 538     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 539     {
 540         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 541                          "our internal buffers must have overflown." );
 542         p_vout->pf_end( p_vout );
 543         return VLC_EGENERIC;
 544     }
 545
 546     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 547
 548     AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );
 549
 550     msg_Dbg( p_vout, "picture in %ix%i (%i,%i,%ix%i), "
 551              "chroma %4.4s, ar %i:%i, sar %i:%i",
 552              p_vout->fmt_render.i_width, p_vout->fmt_render.i_height,
 553              p_vout->fmt_render.i_x_offset, p_vout->fmt_render.i_y_offset,
 554              p_vout->fmt_render.i_visible_width,
 555              p_vout->fmt_render.i_visible_height,
 556              (char*)&p_vout->fmt_render.i_chroma,
 557              i_aspect_x, i_aspect_y,
 558              p_vout->fmt_render.i_sar_num, p_vout->fmt_render.i_sar_den );
 559
 560     AspectRatio( p_vout->fmt_in.i_aspect, &i_aspect_x, &i_aspect_y );
 561
 562     msg_Dbg( p_vout, "picture user %ix%i (%i,%i,%ix%i), "
 563              "chroma %4.4s, ar %i:%i, sar %i:%i",
 564              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 565              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 566              p_vout->fmt_in.i_visible_width,
 567              p_vout->fmt_in.i_visible_height,
 568              (char*)&p_vout->fmt_in.i_chroma,
 569              i_aspect_x, i_aspect_y,
 570              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 571
 572     if( !p_vout->fmt_out.i_width || !p_vout->fmt_out.i_height )
 573     {
 574         p_vout->fmt_out.i_width = p_vout->fmt_out.i_visible_width =
 575             p_vout->output.i_width;
 576         p_vout->fmt_out.i_height = p_vout->fmt_out.i_visible_height =
 577             p_vout->output.i_height;
 578         p_vout->fmt_out.i_x_offset =  p_vout->fmt_out.i_y_offset = 0;
 579
 580         p_vout->fmt_out.i_aspect = p_vout->output.i_aspect;
 581         p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 582     }
 583     if( !p_vout->fmt_out.i_sar_num || !p_vout->fmt_out.i_sar_num )
 584     {
 585         p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_aspect *
 586             p_vout->fmt_out.i_height;
 587         p_vout->fmt_out.i_sar_den = VOUT_ASPECT_FACTOR *
 588             p_vout->fmt_out.i_width;
 589     }
 590
 591     vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
 592                  p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
 593
 594     AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
 595
 596     msg_Dbg( p_vout, "picture out %ix%i (%i,%i,%ix%i), "
 597              "chroma %4.4s, ar %i:%i, sar %i:%i",
 598              p_vout->fmt_out.i_width, p_vout->fmt_out.i_height,
 599              p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
 600              p_vout->fmt_out.i_visible_width,
 601              p_vout->fmt_out.i_visible_height,
 602              (char*)&p_vout->fmt_out.i_chroma,
 603              i_aspect_x, i_aspect_y,
 604              p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den );
 605
 606     /* Calculate shifts from system-updated masks */
 607     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 608                  p_vout->output.i_rmask );
 609     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 610                  p_vout->output.i_gmask );
 611     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 612                  p_vout->output.i_bmask );
 613
 614     /* Check whether we managed to create direct buffers similar to
 615      * the render buffers, ie same size and chroma */
 616     if( ( p_vout->output.i_width == p_vout->render.i_width )
 617      && ( p_vout->output.i_height == p_vout->render.i_height )
 618      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 619     {
 620         /* Cool ! We have direct buffers, we can ask the decoder to
 621          * directly decode into them ! Map the first render buffers to
 622          * the first direct buffers, but keep the first direct buffer
 623          * for memcpy operations */
 624         p_vout->b_direct = 1;
 625
 626         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 627         {
 628             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 629                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 630                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 631             {
 632                 /* We have enough direct buffers so there's no need to
 633                  * try to use system memory buffers. */
 634                 break;
 635             }
 636             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 637             I_RENDERPICTURES++;
 638         }
 639
 640         msg_Dbg( p_vout, "direct render, mapping "
 641                  "render pictures 0-%i to system pictures 1-%i",
 642                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 643     }
 644     else
 645     {
 646         /* Rats... Something is wrong here, we could not find an output
 647          * plugin able to directly render what we decode. See if we can
 648          * find a chroma plugin to do the conversion */
 649         p_vout->b_direct = 0;
 650
 651         if( ChromaCreate( p_vout ) )
 652         {
 653             p_vout->pf_end( p_vout );
 654             return VLC_EGENERIC;
 655         }
 656
 657         msg_Dbg( p_vout, "indirect render, mapping "
 658                  "render pictures 0-%i to system pictures %i-%i",
 659                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 660                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 661
 662         /* Append render buffers after the direct buffers */
 663         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 664         {
 665             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 666             I_RENDERPICTURES++;
 667
 668             /* Check if we have enough render pictures */
 669             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 670                 break;
 671         }
 672     }
 673
 674     /* Link pictures back to their heap */
 675     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 676     {
 677         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 678     }
 679
 680     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 681     {
 682         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 683     }
 684
 685     return VLC_SUCCESS;
 686 }
 687
 688 /*****************************************************************************
 689  * RunThread: video output thread
 690  *****************************************************************************
 691  * Video output thread. This function does only returns when the thread is
 692  * terminated. It handles the pictures arriving in the video heap and the
 693  * display device events.
 694  *****************************************************************************/
 695 static void RunThread( vout_thread_t *p_vout)
 696 {
 697     int             i_index;                                /* index in heap */
 698     int             i_idle_loops = 0;  /* loops without displaying a picture */
 699     mtime_t         current_date;                            /* current date */
 700     mtime_t         display_date;                            /* display date */
 701
 702     picture_t *     p_picture;                            /* picture pointer */
 703     picture_t *     p_last_picture = NULL;                   /* last picture */
 704     picture_t *     p_directbuffer;              /* direct buffer to display */
 705
 706     subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
 707
 708     input_thread_t *p_input = NULL ;           /* Parent input, if it exists */
 709
 710     vlc_value_t     val;
 711     bool      b_drop_late;
 712
 713     int             i_displayed = 0, i_lost = 0, i_loops = 0;
 714
 715     /*
 716      * Initialize thread
 717      */
 718     vlc_mutex_lock( &p_vout->change_lock );
 719     p_vout->b_error = InitThread( p_vout );
 720
 721     var_Create( p_vout, "drop-late-frames", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 722     var_Get( p_vout, "drop-late-frames", &val );
 723     b_drop_late = val.b_bool;
 724
 725     /* signal the creation of the vout */
 726     vlc_thread_ready( p_vout );
 727
 728     if( p_vout->b_error )
 729     {
 730         EndThread( p_vout );
 731         vlc_mutex_unlock( &p_vout->change_lock );
 732         return;
 733     }
 734
 735     vlc_object_lock( p_vout );
 736
 737     if( p_vout->b_title_show )
 738         DisplayTitleOnOSD( p_vout );
 739
 740     /*
 741      * Main loop - it is not executed if an error occurred during
 742      * initialization
 743      */
 744     while( (vlc_object_alive( p_vout )) && (!p_vout->b_error) )
 745     {
 746         /* Initialize loop variables */
 747         p_picture = NULL;
 748         display_date = 0;
 749         current_date = mdate();
 750
 751         i_loops++;
 752             if( !p_input )
 753             {
 754                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 755                                            FIND_PARENT );
 756             }
 757             if( p_input )
 758             {
 759                 vlc_mutex_lock( &p_input->p->counters.counters_lock );
 760                 stats_UpdateInteger( p_vout, p_input->p->counters.p_lost_pictures,
 761                                      i_lost , NULL);
 762                 stats_UpdateInteger( p_vout,
 763                                      p_input->p->counters.p_displayed_pictures,
 764                                      i_displayed , NULL);
 765                 i_displayed = i_lost = 0;
 766                 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 767                 vlc_object_release( p_input );
 768                 p_input = NULL;
 769             }
 770 #if 0
 771         p_vout->c_loops++;
 772         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 773         {
 774             msg_Dbg( p_vout, "picture heap: %d/%d",
 775                      I_RENDERPICTURES, p_vout->i_heap_size );
 776         }
 777 #endif
 778
 779         /*
 780          * Find the picture to display (the one with the earliest date).
 781          * This operation does not need lock, since only READY_PICTUREs
 782          * are handled. */
 783         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 784         {
 785             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 786                 && ( (p_picture == NULL) ||
 787                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 788             {
 789                 p_picture = PP_RENDERPICTURE[i_index];
 790                 display_date = p_picture->date;
 791             }
 792         }
 793
 794         if( p_picture )
 795         {
 796             /* If we met the last picture, parse again to see whether there is
 797              * a more appropriate one. */
 798             if( p_picture == p_last_picture )
 799             {
 800                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 801                 {
 802                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 803                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 804                         && ((p_picture == p_last_picture) ||
 805                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 806                     {
 807                         p_picture = PP_RENDERPICTURE[i_index];
 808                         display_date = p_picture->date;
 809                     }
 810                 }
 811             }
 812
 813             /* If we found better than the last picture, destroy it */
 814             if( p_last_picture && p_picture != p_last_picture )
 815             {
 816                 vlc_mutex_lock( &p_vout->picture_lock );
 817                 if( p_last_picture->i_refcount )
 818                 {
 819                     p_last_picture->i_status = DISPLAYED_PICTURE;
 820                 }
 821                 else
 822                 {
 823                     p_last_picture->i_status = DESTROYED_PICTURE;
 824                     p_vout->i_heap_size--;
 825                 }
 826                 vlc_mutex_unlock( &p_vout->picture_lock );
 827                 p_last_picture = NULL;
 828             }
 829
 830             /* Compute FPS rate */
 831             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 832                 = display_date;
 833
 834             if( !p_picture->b_force &&
 835                 p_picture != p_last_picture &&
 836                 display_date < current_date + p_vout->render_time &&
 837                 b_drop_late )
 838             {
 839                 /* Picture is late: it will be destroyed and the thread
 840                  * will directly choose the next picture */
 841                 vlc_mutex_lock( &p_vout->picture_lock );
 842                 if( p_picture->i_refcount )
 843                 {
 844                     /* Pretend we displayed the picture, but don't destroy
 845                      * it since the decoder might still need it. */
 846                     p_picture->i_status = DISPLAYED_PICTURE;
 847                 }
 848                 else
 849                 {
 850                     /* Destroy the picture without displaying it */
 851                     p_picture->i_status = DESTROYED_PICTURE;
 852                     p_vout->i_heap_size--;
 853                 }
 854                 msg_Warn( p_vout, "late picture skipped (%"PRId64")",
 855                                   current_date - display_date );
 856                 i_lost++;
 857                 vlc_mutex_unlock( &p_vout->picture_lock );
 858
 859                 continue;
 860             }
 861
 862             if( display_date >
 863                 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
 864             {
 865                 /* Picture is waaay too early: it will be destroyed */
 866                 vlc_mutex_lock( &p_vout->picture_lock );
 867                 if( p_picture->i_refcount )
 868                 {
 869                     /* Pretend we displayed the picture, but don't destroy
 870                      * it since the decoder might still need it. */
 871                     p_picture->i_status = DISPLAYED_PICTURE;
 872                 }
 873                 else
 874                 {
 875                     /* Destroy the picture without displaying it */
 876                     p_picture->i_status = DESTROYED_PICTURE;
 877                     p_vout->i_heap_size--;
 878                 }
 879                 i_lost++;
 880                 msg_Warn( p_vout, "vout warning: early picture skipped "
 881                           "(%"PRId64")", display_date - current_date
 882                           - p_vout->i_pts_delay );
 883                 vlc_mutex_unlock( &p_vout->picture_lock );
 884
 885                 continue;
 886             }
 887
 888             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 889             {
 890                 /* A picture is ready to be rendered, but its rendering date
 891                  * is far from the current one so the thread will perform an
 892                  * empty loop as if no picture were found. The picture state
 893                  * is unchanged */
 894                 p_picture    = NULL;
 895                 display_date = 0;
 896             }
 897             else if( p_picture == p_last_picture )
 898             {
 899                 /* We are asked to repeat the previous picture, but we first
 900                  * wait for a couple of idle loops */
 901                 if( i_idle_loops < 4 )
 902                 {
 903                     p_picture    = NULL;
 904                     display_date = 0;
 905                 }
 906                 else
 907                 {
 908                     /* We set the display date to something high, otherwise
 909                      * we'll have lots of problems with late pictures */
 910                     display_date = current_date + p_vout->render_time;
 911                 }
 912             }
 913         }
 914
 915         if( p_picture == NULL )
 916         {
 917             i_idle_loops++;
 918         }
 919
 920         if( p_picture )
 921         {
 922             p_picture = filter_chain_VideoFilter( p_vout->p_vf2_chain,
 923                                                   p_picture );
 924         }
 925
 926         if( p_picture && p_vout->b_snapshot )
 927         {
 928             p_vout->b_snapshot = false;
 929             vout_Snapshot( p_vout, p_picture );
 930         }
 931
 932         /*
 933          * Check for subpictures to display
 934          */
 935         if( display_date > 0 )
 936         {
 937             if( !p_input )
 938             {
 939                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 940                                            FIND_PARENT );
 941             }
 942             p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date,
 943             p_input ? var_GetBool( p_input, "state" ) == PAUSE_S : false );
 944             if( p_input )
 945                 vlc_object_release( p_input );
 946             p_input = NULL;
 947         }
 948
 949         /*
 950          * Perform rendering
 951          */
 952         i_displayed++;
 953         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
 954
 955         /*
 956          * Call the plugin-specific rendering method if there is one
 957          */
 958         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
 959         {
 960             /* Render the direct buffer returned by vout_RenderPicture */
 961             p_vout->pf_render( p_vout, p_directbuffer );
 962         }
 963
 964         /*
 965          * Sleep, wake up
 966          */
 967         if( display_date != 0 && p_directbuffer != NULL )
 968         {
 969             mtime_t current_render_time = mdate() - current_date;
 970             /* if render time is very large we don't include it in the mean */
 971             if( current_render_time < p_vout->render_time +
 972                 VOUT_DISPLAY_DELAY )
 973             {
 974                 /* Store render time using a sliding mean weighting to
 975                  * current value in a 3 to 1 ratio*/
 976                 p_vout->render_time *= 3;
 977                 p_vout->render_time += current_render_time;
 978                 p_vout->render_time >>= 2;
 979             }
 980         }
 981
 982         /* Give back change lock */
 983         vlc_mutex_unlock( &p_vout->change_lock );
 984
 985         vlc_object_unlock( p_vout );
 986
 987         /* Sleep a while or until a given date */
 988         if( display_date != 0 )
 989         {
 990             /* If there are filters in the chain, better give them the picture
 991              * in advance */
 992             if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 993             {
 994                 mwait( display_date - VOUT_MWAIT_TOLERANCE );
 995             }
 996         }
 997         else
 998         {
 999             msleep( VOUT_IDLE_SLEEP );
1000         }
1001
1002         /* On awakening, take back lock and send immediately picture
1003          * to display. */
1004         vlc_object_lock( p_vout );
1005         /* Note: vlc_object_alive() could be false here, and we
1006          * could be dead */
1007         vlc_mutex_lock( &p_vout->change_lock );
1008
1009         /*
1010          * Display the previously rendered picture
1011          */
1012         if( p_picture != NULL && p_directbuffer != NULL )
1013         {
1014             /* Display the direct buffer returned by vout_RenderPicture */
1015             if( p_vout->pf_display )
1016             {
1017                 p_vout->pf_display( p_vout, p_directbuffer );
1018             }
1019
1020             /* Tell the vout this was the last picture and that it does not
1021              * need to be forced anymore. */
1022             p_last_picture = p_picture;
1023             p_last_picture->b_force = 0;
1024         }
1025
1026         if( p_picture != NULL )
1027         {
1028             /* Reinitialize idle loop count */
1029             i_idle_loops = 0;
1030         }
1031
1032         /*
1033          * Check events and manage thread
1034          */
1035         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
1036         {
1037             /* A fatal error occurred, and the thread must terminate
1038              * immediately, without displaying anything - setting b_error to 1
1039              * causes the immediate end of the main while() loop. */
1040             // FIXME pf_end
1041             p_vout->b_error = 1;
1042             break;
1043         }
1044
1045         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
1046         {
1047             /* this must only happen when the vout plugin is incapable of
1048              * rescaling the picture itself. In this case we need to destroy
1049              * the current picture buffers and recreate new ones with the right
1050              * dimensions */
1051             int i;
1052
1053             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
1054
1055             assert( !p_vout->b_direct );
1056
1057             ChromaDestroy( p_vout );
1058
1059             vlc_mutex_lock( &p_vout->picture_lock );
1060
1061             p_vout->pf_end( p_vout );
1062
1063             for( i = 0; i < I_OUTPUTPICTURES; i++ )
1064                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
1065
1066             I_OUTPUTPICTURES = 0;
1067
1068             if( p_vout->pf_init( p_vout ) )
1069             {
1070                 msg_Err( p_vout, "cannot resize display" );
1071                 /* FIXME: pf_end will be called again in EndThread() */
1072                 p_vout->b_error = 1;
1073             }
1074
1075             vlc_mutex_unlock( &p_vout->picture_lock );
1076
1077             /* Need to reinitialise the chroma plugin. Since we might need
1078              * resizing too and it's not sure that we already had it,
1079              * recreate the chroma plugin chain from scratch. */
1080             /* dionoea */
1081             if( ChromaCreate( p_vout ) )
1082             {
1083                 msg_Err( p_vout, "WOW THIS SUCKS BIG TIME!!!!!" );
1084                 p_vout->b_error = 1;
1085             }
1086             if( p_vout->b_error )
1087                 break;
1088         }
1089
1090         if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1091         {
1092             /* This happens when the picture buffers need to be recreated.
1093              * This is useful on multimonitor displays for instance.
1094              *
1095              * Warning: This only works when the vout creates only 1 picture
1096              * buffer!! */
1097             p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1098
1099             if( !p_vout->b_direct )
1100                 ChromaDestroy( p_vout );
1101
1102             vlc_mutex_lock( &p_vout->picture_lock );
1103
1104             p_vout->pf_end( p_vout );
1105
1106             I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1107
1108             p_vout->b_error = InitThread( p_vout );
1109             if( p_vout->b_error )
1110                 msg_Err( p_vout, "InitThread after VOUT_PICTURE_BUFFERS_CHANGE failed\n" );
1111
1112             vlc_mutex_unlock( &p_vout->picture_lock );
1113
1114             if( p_vout->b_error )
1115                 break;
1116         }
1117
1118         /* Check for "video filter2" changes */
1119         vlc_mutex_lock( &p_vout->vfilter_lock );
1120         if( p_vout->psz_vf2 )
1121         {
1122             es_format_t fmt;
1123
1124             es_format_Init( &fmt, VIDEO_ES, p_vout->fmt_render.i_chroma );
1125             fmt.video = p_vout->fmt_render;
1126             filter_chain_Reset( p_vout->p_vf2_chain, &fmt, &fmt );
1127
1128             if( filter_chain_AppendFromString( p_vout->p_vf2_chain,
1129                                                p_vout->psz_vf2 ) < 0 )
1130                 msg_Err( p_vout, "Video filter chain creation failed" );
1131
1132             free( p_vout->psz_vf2 );
1133             p_vout->psz_vf2 = NULL;
1134         }
1135         vlc_mutex_unlock( &p_vout->vfilter_lock );
1136     }
1137
1138
1139     if( p_input )
1140     {
1141         vlc_object_release( p_input );
1142     }
1143
1144     /*
1145      * Error loop - wait until the thread destruction is requested
1146      */
1147     if( p_vout->b_error )
1148         ErrorThread( p_vout );
1149
1150     /* End of thread */
1151     CleanThread( p_vout );
1152     EndThread( p_vout );
1153     vlc_mutex_unlock( &p_vout->change_lock );
1154
1155     vlc_object_unlock( p_vout );
1156 }
1157
1158 /*****************************************************************************
1159  * ErrorThread: RunThread() error loop
1160  *****************************************************************************
1161  * This function is called when an error occurred during thread main's loop.
1162  * The thread can still receive feed, but must be ready to terminate as soon
1163  * as possible.
1164  *****************************************************************************/
1165 static void ErrorThread( vout_thread_t *p_vout )
1166 {
1167     /* Wait until a `die' order */
1168     while( vlc_object_alive( p_vout ) )
1169         vlc_object_wait( p_vout );
1170 }
1171
1172 /*****************************************************************************
1173  * CleanThread: clean up after InitThread
1174  *****************************************************************************
1175  * This function is called after a sucessful
1176  * initialization. It frees all resources allocated by InitThread.
1177  * XXX You have to enter it with change_lock taken.
1178  *****************************************************************************/
1179 static void CleanThread( vout_thread_t *p_vout )
1180 {
1181     int     i_index;                                        /* index in heap */
1182
1183     if( !p_vout->b_direct )
1184         ChromaDestroy( p_vout );
1185
1186     /* Destroy all remaining pictures */
1187     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1188     {
1189         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1190         {
1191             free( p_vout->p_picture[i_index].p_data_orig );
1192         }
1193     }
1194
1195     /* Destroy translation tables */
1196     if( !p_vout->b_error )
1197         p_vout->pf_end( p_vout );
1198 }
1199
1200 /*****************************************************************************
1201  * EndThread: thread destruction
1202  *****************************************************************************
1203  * This function is called when the thread ends.
1204  * It frees all resources not allocated by InitThread.
1205  * XXX You have to enter it with change_lock taken.
1206  *****************************************************************************/
1207 static void EndThread( vout_thread_t *p_vout )
1208 {
1209 #ifdef STATS
1210     {
1211         struct tms cpu_usage;
1212         times( &cpu_usage );
1213
1214         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1215                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1216     }
1217 #endif
1218
1219     /* FIXME does that function *really* need to be called inside the thread ? */
1220
1221     /* Destroy subpicture unit */
1222     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), false );
1223     spu_Destroy( p_vout->p_spu );
1224
1225     /* Destroy the video filters2 */
1226     filter_chain_Delete( p_vout->p_vf2_chain );
1227 }
1228
1229 /* Thread helpers */
1230 static picture_t *ChromaGetPicture( filter_t *p_filter )
1231 {
1232     picture_t *p_pic = (picture_t *)p_filter->p_owner;
1233     p_filter->p_owner = NULL;
1234     return p_pic;
1235 }
1236
1237 static int ChromaCreate( vout_thread_t *p_vout )
1238 {
1239     filter_t *p_chroma;
1240
1241     /* Choose the best module */
1242     p_chroma = p_vout->p_chroma = vlc_object_create( p_vout, sizeof(filter_t) );
1243
1244     vlc_object_attach( p_chroma, p_vout );
1245
1246     /* TODO: Set the fmt_in and fmt_out stuff here */
1247     p_chroma->fmt_in.video = p_vout->fmt_render;
1248     p_chroma->fmt_out.video = p_vout->fmt_out;
1249
1250     p_chroma->fmt_out.video.i_rmask = p_vout->output.i_rmask;
1251     p_chroma->fmt_out.video.i_gmask = p_vout->output.i_gmask;
1252     p_chroma->fmt_out.video.i_bmask = p_vout->output.i_bmask;
1253     p_chroma->fmt_out.video.i_rrshift = p_vout->output.i_rrshift;
1254     p_chroma->fmt_out.video.i_lrshift = p_vout->output.i_lrshift;
1255     p_chroma->fmt_out.video.i_rgshift = p_vout->output.i_rgshift;
1256     p_chroma->fmt_out.video.i_lgshift = p_vout->output.i_lgshift;
1257     p_chroma->fmt_out.video.i_rbshift = p_vout->output.i_rbshift;
1258     p_chroma->fmt_out.video.i_lbshift = p_vout->output.i_lbshift;
1259     p_chroma->p_module = module_Need( p_chroma, "video filter2", NULL, 0 );
1260
1261     if( p_chroma->p_module == NULL )
1262     {
1263         msg_Err( p_vout, "no chroma module for %4.4s to %4.4s i=%dx%d o=%dx%d",
1264                  (char*)&p_vout->render.i_chroma,
1265                  (char*)&p_vout->output.i_chroma,
1266                  p_chroma->fmt_in.video.i_width, p_chroma->fmt_in.video.i_height,
1267                  p_chroma->fmt_out.video.i_width, p_chroma->fmt_out.video.i_height
1268                  );
1269
1270         vlc_object_release( p_vout->p_chroma );
1271         p_vout->p_chroma = NULL;
1272         return VLC_EGENERIC;
1273     }
1274     p_chroma->pf_vout_buffer_new = ChromaGetPicture;
1275     return VLC_SUCCESS;
1276 }
1277
1278 static void ChromaDestroy( vout_thread_t *p_vout )
1279 {
1280     assert( !p_vout->b_direct );
1281
1282     if( !p_vout->p_chroma )
1283         return;
1284
1285     module_Unneed( p_vout->p_chroma, p_vout->p_chroma->p_module );
1286     vlc_object_release( p_vout->p_chroma );
1287     p_vout->p_chroma = NULL;
1288 }
1289
1290
1291
1292 /* following functions are local */
1293
1294 static int ReduceHeight( int i_ratio )
1295 {
1296     int i_dummy = VOUT_ASPECT_FACTOR;
1297     int i_pgcd  = 1;
1298
1299     if( !i_ratio )
1300     {
1301         return i_pgcd;
1302     }
1303
1304     /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1305     while( !(i_ratio & 1) && !(i_dummy & 1) )
1306     {
1307         i_ratio >>= 1;
1308         i_dummy >>= 1;
1309         i_pgcd  <<= 1;
1310     }
1311
1312     while( !(i_ratio % 3) && !(i_dummy % 3) )
1313     {
1314         i_ratio /= 3;
1315         i_dummy /= 3;
1316         i_pgcd  *= 3;
1317     }
1318
1319     while( !(i_ratio % 5) && !(i_dummy % 5) )
1320     {
1321         i_ratio /= 5;
1322         i_dummy /= 5;
1323         i_pgcd  *= 5;
1324     }
1325
1326     return i_pgcd;
1327 }
1328
1329 static void AspectRatio( int i_aspect, int *i_aspect_x, int *i_aspect_y )
1330 {
1331     unsigned int i_pgcd = ReduceHeight( i_aspect );
1332     *i_aspect_x = i_aspect / i_pgcd;
1333     *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
1334 }
1335
1336 /*****************************************************************************
1337  * BinaryLog: computes the base 2 log of a binary value
1338  *****************************************************************************
1339  * This functions is used by MaskToShift, to get a bit index from a binary
1340  * value.
1341  *****************************************************************************/
1342 static int BinaryLog( uint32_t i )
1343 {
1344     int i_log = 0;
1345
1346     if( i == 0 ) return -31337;
1347
1348     if( i & 0xffff0000 ) i_log += 16;
1349     if( i & 0xff00ff00 ) i_log += 8;
1350     if( i & 0xf0f0f0f0 ) i_log += 4;
1351     if( i & 0xcccccccc ) i_log += 2;
1352     if( i & 0xaaaaaaaa ) i_log += 1;
1353
1354     return i_log;
1355 }
1356
1357 /*****************************************************************************
1358  * MaskToShift: transform a color mask into right and left shifts
1359  *****************************************************************************
1360  * This function is used for obtaining color shifts from masks.
1361  *****************************************************************************/
1362 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1363 {
1364     uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
1365
1366     if( !i_mask )
1367     {
1368         *pi_left = *pi_right = 0;
1369         return;
1370     }
1371
1372     /* Get bits */
1373     i_low = i_high = i_mask;
1374
1375     i_low &= - (int32_t)i_low;          /* lower bit of the mask */
1376     i_high += i_low;                    /* higher bit of the mask */
1377
1378     /* Transform bits into an index. Also deal with i_high overflow, which
1379      * is faster than changing the BinaryLog code to handle 64 bit integers. */
1380     i_low =  BinaryLog (i_low);
1381     i_high = i_high ? BinaryLog (i_high) : 32;
1382
1383     /* Update pointers and return */
1384     *pi_left =   i_low;
1385     *pi_right = (8 - i_high + i_low);
1386 }
1387
1388 /*****************************************************************************
1389  * vout_VarCallback: generic callback for intf variables
1390  *****************************************************************************/
1391 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1392                       vlc_value_t oldval, vlc_value_t newval,
1393                       void *p_data )
1394 {
1395     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1396     vlc_value_t val;
1397     (void)psz_variable; (void)newval; (void)oldval; (void)p_data;
1398     val.b_bool = true;
1399     var_Set( p_vout, "intf-change", val );
1400     return VLC_SUCCESS;
1401 }
1402
1403 /*****************************************************************************
1404  * object variables callbacks: a bunch of object variables are used by the
1405  * interfaces to interact with the vout.
1406  *****************************************************************************/
1407 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1408                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1409 {
1410     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1411     input_thread_t *p_input;
1412     vlc_value_t val;
1413
1414     char *psz_mode = newval.psz_string;
1415     char *psz_filter, *psz_deinterlace = NULL;
1416     (void)psz_cmd; (void)oldval; (void)p_data;
1417
1418     var_Get( p_vout, "vout-filter", &val );
1419     psz_filter = val.psz_string;
1420     if( psz_filter ) psz_deinterlace = strstr( psz_filter, "deinterlace" );
1421
1422     if( !psz_mode || !*psz_mode )
1423     {
1424         if( psz_deinterlace )
1425         {
1426             char *psz_src = psz_deinterlace + sizeof("deinterlace") - 1;
1427             if( psz_src[0] == ':' ) psz_src++;
1428             memmove( psz_deinterlace, psz_src, strlen(psz_src) + 1 );
1429         }
1430     }
1431     else if( !psz_deinterlace )
1432     {
1433         psz_filter = realloc( psz_filter, strlen( psz_filter ) +
1434                               sizeof(":deinterlace") );
1435         if( psz_filter && *psz_filter ) strcat( psz_filter, ":" );
1436         strcat( psz_filter, "deinterlace" );
1437     }
1438
1439     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1440                                                  FIND_PARENT );
1441     if( !p_input ) return VLC_EGENERIC;
1442
1443     if( psz_mode && *psz_mode )
1444     {
1445         /* Modify input as well because the vout might have to be restarted */
1446         val.psz_string = psz_mode;
1447         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1448         var_Set( p_input, "deinterlace-mode", val );
1449     }
1450     vlc_object_release( p_input );
1451
1452     val.b_bool = true;
1453     var_Set( p_vout, "intf-change", val );
1454
1455     val.psz_string = psz_filter;
1456     var_Set( p_vout, "vout-filter", val );
1457     free( psz_filter );
1458
1459     return VLC_SUCCESS;
1460 }
1461
1462 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1463                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1464 {
1465     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1466     input_thread_t *p_input;
1467     vlc_value_t val;
1468     (void)psz_cmd; (void)oldval; (void)p_data;
1469
1470     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1471                                                  FIND_PARENT );
1472     if (!p_input)
1473     {
1474         msg_Err( p_vout, "Input not found" );
1475         return( VLC_EGENERIC );
1476     }
1477
1478     val.b_bool = true;
1479     var_Set( p_vout, "intf-change", val );
1480
1481     /* Modify input as well because the vout might have to be restarted */
1482     val.psz_string = newval.psz_string;
1483     var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1484
1485     var_Set( p_input, "vout-filter", val );
1486
1487     /* Now restart current video stream */
1488     var_Get( p_input, "video-es", &val );
1489     if( val.i_int >= 0 )
1490     {
1491         p_vout->b_filter_change = true;
1492         /* To all (embedded) video output developpers:
1493          * Beware of callback loops if you listen on video-es. Really.
1494          * You were warned. -- Courmisch */
1495         var_SetInteger( p_input, "video-es", -VIDEO_ES );
1496         var_Set( p_input, "video-es", val );
1497     }
1498     vlc_object_release( p_input );
1499     return VLC_SUCCESS;
1500 }
1501
1502 /*****************************************************************************
1503  * Video Filter2 stuff
1504  *****************************************************************************/
1505 static int VideoFilter2Callback( vlc_object_t *p_this, char const *psz_cmd,
1506                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1507 {
1508     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1509     (void)psz_cmd; (void)oldval; (void)p_data;
1510
1511     vlc_mutex_lock( &p_vout->vfilter_lock );
1512     p_vout->psz_vf2 = strdup( newval.psz_string );
1513     vlc_mutex_unlock( &p_vout->vfilter_lock );
1514
1515     return VLC_SUCCESS;
1516 }
1517
1518 static void DisplayTitleOnOSD( vout_thread_t *p_vout )
1519 {
1520     input_thread_t *p_input;
1521     mtime_t i_now, i_stop;
1522
1523     p_input = (input_thread_t *)vlc_object_find( p_vout,
1524               VLC_OBJECT_INPUT, FIND_ANYWHERE );
1525     if( p_input )
1526     {
1527         i_now = mdate();
1528         i_stop = i_now + (mtime_t)(p_vout->i_title_timeout * 1000);
1529         char *psz_nowplaying =
1530             input_item_GetNowPlaying( input_GetItem( p_input ) );
1531         char *psz_artist = input_item_GetArtist( input_GetItem( p_input ) );
1532         char *psz_name = input_item_GetTitle( input_GetItem( p_input ) );
1533         if( EMPTY_STR( psz_name ) )
1534         {
1535             free( psz_name );
1536             psz_name = input_item_GetName( input_GetItem( p_input ) );
1537         }
1538         if( !EMPTY_STR( psz_nowplaying ) )
1539         {
1540             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1541                                    psz_nowplaying, NULL,
1542                                    p_vout->i_title_position,
1543                                    30 + p_vout->fmt_in.i_width
1544                                       - p_vout->fmt_in.i_visible_width
1545                                       - p_vout->fmt_in.i_x_offset,
1546                                    20 + p_vout->fmt_in.i_y_offset,
1547                                    i_now, i_stop );
1548         }
1549         else if( !EMPTY_STR( psz_artist ) )
1550         {
1551             char *psz_string = NULL;
1552             if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
1553             {
1554                 vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1555                                        psz_string, 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                 free( psz_string );
1563             }
1564         }
1565         else
1566         {
1567             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1568                                    psz_name, NULL,
1569                                    p_vout->i_title_position,
1570                                    30 + p_vout->fmt_in.i_width
1571                                       - p_vout->fmt_in.i_visible_width
1572                                       - p_vout->fmt_in.i_x_offset,
1573                                    20 + p_vout->fmt_in.i_y_offset,
1574                                    i_now, i_stop );
1575         }
1576         vlc_object_release( p_input );
1577         free( psz_artist );
1578         free( psz_name );
1579         free( psz_nowplaying );
1580     }
1581 }
1582