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 #include <assert.h>
  51
  52 #if defined( __APPLE__ )
  53 /* Include darwin_specific.h here if needed */
  54 #endif
  55
  56 /** FIXME This is quite ugly but needed while we don't have counters
  57  * helpers */
  58 //#include "input/input_internal.h"
  59
  60 #include <libvlc.h>
  61 #include <vlc_input.h>
  62 #include "vout_pictures.h"
  63 #include "vout_internal.h"
  64
  65 /*****************************************************************************
  66  * Local prototypes
  67  *****************************************************************************/
  68 static int      InitThread        ( vout_thread_t * );
  69 static void*    RunThread         ( void *  );
  70 static void     ErrorThread       ( vout_thread_t * );
  71 static void     CleanThread       ( vout_thread_t * );
  72 static void     EndThread         ( vout_thread_t * );
  73
  74 static void     AspectRatio       ( int, int *, int * );
  75
  76 static void VideoFormatImportRgb( video_format_t *, const picture_heap_t * );
  77 static void PictureHeapFixRgb( picture_heap_t * );
  78
  79 static void     vout_Destructor   ( vlc_object_t * p_this );
  80
  81 /* Object variables callbacks */
  82 static int FilterCallback( vlc_object_t *, char const *,
  83                            vlc_value_t, vlc_value_t, void * );
  84 static int VideoFilter2Callback( vlc_object_t *, char const *,
  85                                  vlc_value_t, vlc_value_t, void * );
  86
  87 /* */
  88 static void PostProcessEnable( vout_thread_t * );
  89 static void PostProcessDisable( vout_thread_t * );
  90 static void PostProcessSetFilterQuality( vout_thread_t *p_vout );
  91 static int  PostProcessCallback( vlc_object_t *, char const *,
  92                                  vlc_value_t, vlc_value_t, void * );
  93 /* */
  94 static void DeinterlaceEnable( vout_thread_t * );
  95
  96 /* From vout_intf.c */
  97 int vout_Snapshot( vout_thread_t *, picture_t * );
  98
  99 /* Display media title in OSD */
 100 static void DisplayTitleOnOSD( vout_thread_t *p_vout );
 101
 102 /* Time during which the thread will sleep if it has nothing to
 103  * display (in micro-seconds) */
 104 #define VOUT_IDLE_SLEEP                 ((int)(0.020*CLOCK_FREQ))
 105
 106 /* Maximum lap of time allowed between the beginning of rendering and
 107  * display. If, compared to the current date, the next image is too
 108  * late, the thread will perform an idle loop. This time should be
 109  * at least VOUT_IDLE_SLEEP plus the time required to render a few
 110  * images, to avoid trashing of decoded images */
 111 #define VOUT_DISPLAY_DELAY              ((int)(0.200*CLOCK_FREQ))
 112
 113 /* Better be in advance when awakening than late... */
 114 #define VOUT_MWAIT_TOLERANCE            ((mtime_t)(0.020*CLOCK_FREQ))
 115
 116 /* Minimum number of direct pictures the video output will accept without
 117  * creating additional pictures in system memory */
 118 #ifdef OPTIMIZE_MEMORY
 119 #   define VOUT_MIN_DIRECT_PICTURES        (VOUT_MAX_PICTURES/2)
 120 #else
 121 #   define VOUT_MIN_DIRECT_PICTURES        (3*VOUT_MAX_PICTURES/4)
 122 #endif
 123
 124 /*****************************************************************************
 125  * Video Filter2 functions
 126  *****************************************************************************/
 127 static picture_t *video_new_buffer_filter( filter_t *p_filter )
 128 {
 129     vout_thread_t *p_vout = (vout_thread_t*)p_filter->p_owner;
 130     picture_t *p_picture = vout_CreatePicture( p_vout, 0, 0, 0 );
 131
 132     p_picture->i_status = READY_PICTURE;
 133
 134     return p_picture;
 135 }
 136
 137 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
 138 {
 139     vout_thread_t *p_vout = (vout_thread_t*)p_filter->p_owner;
 140
 141     vlc_mutex_lock( &p_vout->picture_lock );
 142     vout_UsePictureLocked( p_vout, p_pic );
 143     vlc_mutex_unlock( &p_vout->picture_lock );
 144 }
 145
 146 static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
 147 {
 148     p_filter->pf_vout_buffer_new = video_new_buffer_filter;
 149     p_filter->pf_vout_buffer_del = video_del_buffer_filter;
 150     p_filter->p_owner = p_data; /* p_vout */
 151     return VLC_SUCCESS;
 152 }
 153
 154 /*****************************************************************************
 155  * vout_Request: find a video output thread, create one, or destroy one.
 156  *****************************************************************************
 157  * This function looks for a video output thread matching the current
 158  * properties. If not found, it spawns a new one.
 159  *****************************************************************************/
 160 vout_thread_t *__vout_Request( vlc_object_t *p_this, vout_thread_t *p_vout,
 161                                video_format_t *p_fmt )
 162 {
 163     if( !p_fmt )
 164     {
 165         /* Video output is no longer used.
 166          * TODO: support for reusing video outputs with proper _thread-safe_
 167          * reference handling. */
 168         if( p_vout )
 169             vout_CloseAndRelease( p_vout );
 170         return NULL;
 171     }
 172
 173     /* If a video output was provided, lock it, otherwise look for one. */
 174     if( p_vout )
 175     {
 176         vlc_object_hold( p_vout );
 177     }
 178
 179     /* TODO: find a suitable unused video output */
 180
 181     /* If we now have a video output, check it has the right properties */
 182     if( p_vout )
 183     {
 184         vlc_mutex_lock( &p_vout->change_lock );
 185
 186         /* We don't directly check for the "vout-filter" variable for obvious
 187          * performance reasons. */
 188         if( p_vout->p->b_filter_change )
 189         {
 190             char *psz_filter_chain = var_GetString( p_vout, "vout-filter" );
 191
 192             if( psz_filter_chain && !*psz_filter_chain )
 193             {
 194                 free( psz_filter_chain );
 195                 psz_filter_chain = NULL;
 196             }
 197             if( p_vout->p->psz_filter_chain && !*p_vout->p->psz_filter_chain )
 198             {
 199                 free( p_vout->p->psz_filter_chain );
 200                 p_vout->p->psz_filter_chain = NULL;
 201             }
 202
 203             if( !psz_filter_chain && !p_vout->p->psz_filter_chain )
 204             {
 205                 p_vout->p->b_filter_change = false;
 206             }
 207
 208             free( psz_filter_chain );
 209         }
 210
 211         if( p_vout->fmt_render.i_chroma != vlc_fourcc_GetCodec( VIDEO_ES, p_fmt->i_chroma ) ||
 212             p_vout->fmt_render.i_width != p_fmt->i_width ||
 213             p_vout->fmt_render.i_height != p_fmt->i_height ||
 214             p_vout->p->b_filter_change )
 215         {
 216             vlc_mutex_unlock( &p_vout->change_lock );
 217
 218             /* We are not interested in this format, close this vout */
 219             vout_CloseAndRelease( p_vout );
 220             vlc_object_release( p_vout );
 221             p_vout = NULL;
 222         }
 223         else
 224         {
 225             /* This video output is cool! Hijack it. */
 226             if( p_vout->fmt_render.i_aspect != p_fmt->i_aspect )
 227             {
 228                 /* Correct aspect ratio on change
 229                  * FIXME factorize this code with other aspect ration related code */
 230                 unsigned int i_sar_num;
 231                 unsigned int i_sar_den;
 232                 unsigned int i_aspect;
 233
 234                 i_aspect = p_fmt->i_aspect;
 235                 vlc_ureduce( &i_sar_num, &i_sar_den,
 236                              p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 237 #if 0
 238                 /* What's that, it does not seems to be used correcly everywhere
 239                  * beside the previous p_vout->fmt_render.i_aspect != p_fmt->i_aspect
 240                  * should be fixed to use it too then */
 241                 if( p_vout->i_par_num > 0 && p_vout->i_par_den > 0 )
 242                 {
 243                     i_sar_num *= p_vout->i_par_den;
 244                     i_sar_den *= p_vout->i_par_num;
 245                     i_aspect = i_aspect * p_vout->i_par_den / p_vout->i_par_num;
 246                 }
 247 #endif
 248
 249                 if( i_sar_num > 0 && i_sar_den > 0 && i_aspect > 0 )
 250                 {
 251                     p_vout->fmt_in.i_sar_num = i_sar_num;
 252                     p_vout->fmt_in.i_sar_den = i_sar_den;
 253                     p_vout->fmt_in.i_aspect  = i_aspect;
 254
 255                     p_vout->fmt_render.i_sar_num = i_sar_num;
 256                     p_vout->fmt_render.i_sar_den = i_sar_den;
 257                     p_vout->fmt_render.i_aspect  = i_aspect;
 258
 259                     p_vout->render.i_aspect   = i_aspect;
 260
 261                     p_vout->i_changes |= VOUT_ASPECT_CHANGE;
 262
 263                 }
 264             }
 265             vlc_mutex_unlock( &p_vout->change_lock );
 266
 267             vlc_object_release( p_vout );
 268         }
 269
 270         if( p_vout )
 271         {
 272             msg_Dbg( p_this, "reusing provided vout" );
 273
 274             spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), false );
 275             vlc_object_detach( p_vout );
 276
 277             vlc_object_attach( p_vout, p_this );
 278             spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), true );
 279         }
 280     }
 281
 282     if( !p_vout )
 283     {
 284         msg_Dbg( p_this, "no usable vout present, spawning one" );
 285
 286         p_vout = vout_Create( p_this, p_fmt );
 287     }
 288
 289     return p_vout;
 290 }
 291
 292 /*****************************************************************************
 293  * vout_Create: creates a new video output thread
 294  *****************************************************************************
 295  * This function creates a new video output thread, and returns a pointer
 296  * to its description. On error, it returns NULL.
 297  *****************************************************************************/
 298 vout_thread_t * __vout_Create( vlc_object_t *p_parent, video_format_t *p_fmt )
 299 {
 300     vout_thread_t  * p_vout;                            /* thread descriptor */
 301     int              i_index;                               /* loop variable */
 302     vlc_value_t      text;
 303
 304     unsigned int i_width = p_fmt->i_width;
 305     unsigned int i_height = p_fmt->i_height;
 306     vlc_fourcc_t i_chroma = vlc_fourcc_GetCodec( VIDEO_ES, p_fmt->i_chroma );
 307     unsigned int i_aspect = p_fmt->i_aspect;
 308
 309     config_chain_t *p_cfg;
 310     char *psz_parser;
 311     char *psz_name;
 312
 313     if( i_width <= 0 || i_height <= 0 || i_aspect <= 0 )
 314         return NULL;
 315
 316     vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
 317                  p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 318     if( p_fmt->i_sar_num <= 0 || p_fmt->i_sar_den <= 0 )
 319         return NULL;
 320
 321     /* Allocate descriptor */
 322     static const char typename[] = "video output";
 323     p_vout = vlc_custom_create( p_parent, sizeof( *p_vout ), VLC_OBJECT_VOUT,
 324                                 typename );
 325     if( p_vout == NULL )
 326         return NULL;
 327
 328     /* */
 329     p_vout->p = calloc( 1, sizeof(*p_vout->p) );
 330     if( !p_vout->p )
 331     {
 332         vlc_object_release( p_vout );
 333         return NULL;
 334     }
 335
 336     /* Initialize pictures - translation tables and functions
 337      * will be initialized later in InitThread */
 338     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
 339     {
 340         p_vout->p_picture[i_index].pf_lock = NULL;
 341         p_vout->p_picture[i_index].pf_unlock = NULL;
 342         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 343         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 344         p_vout->p_picture[i_index].b_slow   = 0;
 345     }
 346
 347     /* No images in the heap */
 348     p_vout->i_heap_size = 0;
 349
 350     /* Initialize the rendering heap */
 351     I_RENDERPICTURES = 0;
 352
 353     p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
 354     p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
 355
 356     p_vout->render.i_width    = i_width;
 357     p_vout->render.i_height   = i_height;
 358     p_vout->render.i_chroma   = i_chroma;
 359     p_vout->render.i_aspect   = i_aspect;
 360
 361     p_vout->render.i_rmask    = p_fmt->i_rmask;
 362     p_vout->render.i_gmask    = p_fmt->i_gmask;
 363     p_vout->render.i_bmask    = p_fmt->i_bmask;
 364
 365     p_vout->render.i_last_used_pic = -1;
 366     p_vout->render.b_allow_modify_pics = 1;
 367
 368     /* Zero the output heap */
 369     I_OUTPUTPICTURES = 0;
 370     p_vout->output.i_width    = 0;
 371     p_vout->output.i_height   = 0;
 372     p_vout->output.i_chroma   = 0;
 373     p_vout->output.i_aspect   = 0;
 374
 375     p_vout->output.i_rmask    = 0;
 376     p_vout->output.i_gmask    = 0;
 377     p_vout->output.i_bmask    = 0;
 378
 379     /* Initialize misc stuff */
 380     p_vout->i_changes    = 0;
 381     p_vout->b_autoscale  = 1;
 382     p_vout->i_zoom      = ZOOM_FP_FACTOR;
 383     p_vout->b_fullscreen = 0;
 384     p_vout->i_alignment  = 0;
 385     p_vout->p->render_time  = 10;
 386     p_vout->p->c_fps_samples = 0;
 387     p_vout->p->i_picture_lost = 0;
 388     p_vout->p->i_picture_displayed = 0;
 389     p_vout->p->b_filter_change = 0;
 390     p_vout->p->b_paused = false;
 391     p_vout->p->i_pause_date = 0;
 392     p_vout->pf_control = NULL;
 393     p_vout->p->i_par_num =
 394     p_vout->p->i_par_den = 1;
 395     p_vout->p->p_picture_displayed = NULL;
 396     p_vout->p->i_picture_displayed_date = 0;
 397     p_vout->p->b_picture_displayed = false;
 398     p_vout->p->b_picture_empty = false;
 399     p_vout->p->i_picture_qtype = QTYPE_NONE;
 400
 401     p_vout->p->snapshot.b_available = true;
 402     p_vout->p->snapshot.i_request = 0;
 403     p_vout->p->snapshot.p_picture = NULL;
 404     vlc_mutex_init( &p_vout->p->snapshot.lock );
 405     vlc_cond_init( &p_vout->p->snapshot.wait );
 406
 407     /* Initialize locks */
 408     vlc_mutex_init( &p_vout->picture_lock );
 409     vlc_cond_init( &p_vout->p->picture_wait );
 410     vlc_mutex_init( &p_vout->change_lock );
 411     vlc_mutex_init( &p_vout->p->vfilter_lock );
 412
 413     /* Mouse coordinates */
 414     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 415     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 416     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 417     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 418     var_Create( p_vout, "mouse-clicked", VLC_VAR_BOOL );
 419
 420     /* Initialize subpicture unit */
 421     p_vout->p_spu = spu_Create( p_vout );
 422
 423     /* Attach the new object now so we can use var inheritance below */
 424     vlc_object_attach( p_vout, p_parent );
 425
 426     /* */
 427     spu_Init( p_vout->p_spu );
 428
 429     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), true );
 430
 431     /* Take care of some "interface/control" related initialisations */
 432     vout_IntfInit( p_vout );
 433
 434     /* If the parent is not a VOUT object, that means we are at the start of
 435      * the video output pipe */
 436     if( vlc_internals( p_parent )->i_object_type != VLC_OBJECT_VOUT )
 437     {
 438         /* Look for the default filter configuration */
 439         p_vout->p->psz_filter_chain =
 440             var_CreateGetStringCommand( p_vout, "vout-filter" );
 441
 442         /* Apply video filter2 objects on the first vout */
 443         p_vout->p->psz_vf2 =
 444             var_CreateGetStringCommand( p_vout, "video-filter" );
 445
 446         p_vout->p->b_first_vout = true;
 447     }
 448     else
 449     {
 450         /* continue the parent's filter chain */
 451         char *psz_tmp;
 452
 453         /* Ugly hack to jump to our configuration chain */
 454         p_vout->p->psz_filter_chain
 455             = ((vout_thread_t *)p_parent)->p->psz_filter_chain;
 456         p_vout->p->psz_filter_chain
 457             = config_ChainCreate( &psz_tmp, &p_cfg, p_vout->p->psz_filter_chain );
 458         config_ChainDestroy( p_cfg );
 459         free( psz_tmp );
 460
 461         /* Create a video filter2 var ... but don't inherit values */
 462         var_Create( p_vout, "video-filter",
 463                     VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 464         p_vout->p->psz_vf2 = var_GetString( p_vout, "video-filter" );
 465
 466         /* */
 467         p_vout->p->b_first_vout = false;
 468     }
 469
 470     var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
 471     p_vout->p->p_vf2_chain = filter_chain_New( p_vout, "video filter2",
 472         false, video_filter_buffer_allocation_init, NULL, p_vout );
 473
 474     /* Choose the video output module */
 475     if( !p_vout->p->psz_filter_chain || !*p_vout->p->psz_filter_chain )
 476     {
 477         psz_parser = var_CreateGetString( p_vout, "vout" );
 478     }
 479     else
 480     {
 481         psz_parser = strdup( p_vout->p->psz_filter_chain );
 482         p_vout->p->b_title_show = false;
 483     }
 484
 485     /* Create the vout thread */
 486     char* psz_tmp = config_ChainCreate( &psz_name, &p_cfg, psz_parser );
 487     free( psz_parser );
 488     free( psz_tmp );
 489     p_vout->p_cfg = p_cfg;
 490     p_vout->p_module = module_need( p_vout,
 491         ( p_vout->p->psz_filter_chain && *p_vout->p->psz_filter_chain ) ?
 492         "video filter" : "video output", psz_name, p_vout->p->psz_filter_chain && *p_vout->p->psz_filter_chain );
 493     free( psz_name );
 494
 495     vlc_object_set_destructor( p_vout, vout_Destructor );
 496
 497     if( p_vout->p_module == NULL )
 498     {
 499         msg_Err( p_vout, "no suitable vout module" );
 500         spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), false );
 501         spu_Destroy( p_vout->p_spu );
 502         p_vout->p_spu = NULL;
 503         vlc_object_release( p_vout );
 504         return NULL;
 505     }
 506
 507     /* Create a few object variables for interface interaction */
 508     var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 509     text.psz_string = _("Filters");
 510     var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
 511     var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
 512
 513     /* */
 514     DeinterlaceEnable( p_vout );
 515
 516     /* */
 517     vlc_cond_init( &p_vout->p->change_wait );
 518     if( vlc_clone( &p_vout->p->thread, RunThread, p_vout,
 519                    VLC_THREAD_PRIORITY_OUTPUT ) )
 520     {
 521         module_unneed( p_vout, p_vout->p_module );
 522         p_vout->p_module = NULL;
 523         spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), false );
 524         spu_Destroy( p_vout->p_spu );
 525         p_vout->p_spu = NULL;
 526         vlc_object_release( p_vout );
 527         return NULL;
 528     }
 529
 530     vlc_mutex_lock( &p_vout->change_lock );
 531     while( !p_vout->p->b_ready )
 532     {   /* We are (ab)using the same condition in opposite directions for
 533          * b_ready and b_done. This works because of the strict ordering. */
 534         assert( !p_vout->p->b_done );
 535         vlc_cond_wait( &p_vout->p->change_wait, &p_vout->change_lock );
 536     }
 537     vlc_mutex_unlock( &p_vout->change_lock );
 538
 539     if( p_vout->b_error )
 540     {
 541         msg_Err( p_vout, "video output creation failed" );
 542         vout_CloseAndRelease( p_vout );
 543         return NULL;
 544     }
 545
 546     return p_vout;
 547 }
 548
 549 /*****************************************************************************
 550  * vout_Close: Close a vout created by vout_Create.
 551  *****************************************************************************
 552  * You HAVE to call it on vout created by vout_Create before vlc_object_release.
 553  * You should NEVER call it on vout not obtained through vout_Create
 554  * (like with vout_Request or vlc_object_find.)
 555  * You can use vout_CloseAndRelease() as a convenience method.
 556  *****************************************************************************/
 557 void vout_Close( vout_thread_t *p_vout )
 558 {
 559     assert( p_vout );
 560
 561     vlc_mutex_lock( &p_vout->change_lock );
 562     p_vout->p->b_done = true;
 563     vlc_cond_signal( &p_vout->p->change_wait );
 564     vlc_mutex_unlock( &p_vout->change_lock );
 565
 566     vlc_mutex_lock( &p_vout->p->snapshot.lock );
 567     p_vout->p->snapshot.b_available = false;
 568     vlc_cond_broadcast( &p_vout->p->snapshot.wait );
 569     vlc_mutex_unlock( &p_vout->p->snapshot.lock );
 570
 571     vlc_join( p_vout->p->thread, NULL );
 572     module_unneed( p_vout, p_vout->p_module );
 573     p_vout->p_module = NULL;
 574 }
 575
 576 /* */
 577 static void vout_Destructor( vlc_object_t * p_this )
 578 {
 579     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 580
 581     /* Make sure the vout was stopped first */
 582     assert( !p_vout->p_module );
 583
 584     /* */
 585     if( p_vout->p_spu )
 586         spu_Destroy( p_vout->p_spu );
 587
 588     /* Destroy the locks */
 589     vlc_cond_destroy( &p_vout->p->change_wait );
 590     vlc_cond_destroy( &p_vout->p->picture_wait );
 591     vlc_mutex_destroy( &p_vout->picture_lock );
 592     vlc_mutex_destroy( &p_vout->change_lock );
 593     vlc_mutex_destroy( &p_vout->p->vfilter_lock );
 594
 595     /* */
 596     for( ;; )
 597     {
 598         picture_t *p_picture = p_vout->p->snapshot.p_picture;
 599         if( !p_picture )
 600             break;
 601
 602         p_vout->p->snapshot.p_picture = p_picture->p_next;
 603
 604         picture_Release( p_picture );
 605     }
 606     vlc_cond_destroy( &p_vout->p->snapshot.wait );
 607     vlc_mutex_destroy( &p_vout->p->snapshot.lock );
 608
 609     /* */
 610     free( p_vout->p->psz_filter_chain );
 611     free( p_vout->p->psz_title );
 612
 613     config_ChainDestroy( p_vout->p_cfg );
 614
 615     free( p_vout->p );
 616
 617 #ifndef __APPLE__
 618     vout_thread_t *p_another_vout;
 619
 620     /* This is a dirty hack mostly for Linux, where there is no way to get the
 621      * GUI back if you closed it while playing video. This is solved in
 622      * Mac OS X, where we have this novelty called menubar, that will always
 623      * allow you access to the applications main functionality. They should try
 624      * that on linux sometime. */
 625     p_another_vout = vlc_object_find( p_this->p_libvlc,
 626                                       VLC_OBJECT_VOUT, FIND_ANYWHERE );
 627     if( p_another_vout == NULL )
 628         var_SetBool( p_this->p_libvlc, "intf-show", true );
 629     else
 630         vlc_object_release( p_another_vout );
 631 #endif
 632 }
 633
 634 /* */
 635 void vout_ChangePause( vout_thread_t *p_vout, bool b_paused, mtime_t i_date )
 636 {
 637     vlc_mutex_lock( &p_vout->change_lock );
 638
 639     assert( !p_vout->p->b_paused || !b_paused );
 640
 641     vlc_mutex_lock( &p_vout->picture_lock );
 642
 643     p_vout->p->i_picture_displayed_date = 0;
 644
 645     if( p_vout->p->b_paused )
 646     {
 647         const mtime_t i_duration = i_date - p_vout->p->i_pause_date;
 648
 649         for( int i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 650         {
 651             picture_t *p_pic = PP_RENDERPICTURE[i_index];
 652
 653             if( p_pic->i_status == READY_PICTURE )
 654                 p_pic->date += i_duration;
 655         }
 656         vlc_cond_signal( &p_vout->p->picture_wait );
 657         vlc_mutex_unlock( &p_vout->picture_lock );
 658
 659         spu_OffsetSubtitleDate( p_vout->p_spu, i_duration );
 660     }
 661     else
 662     {
 663         vlc_mutex_unlock( &p_vout->picture_lock );
 664     }
 665     p_vout->p->b_paused = b_paused;
 666     p_vout->p->i_pause_date = i_date;
 667
 668     vlc_mutex_unlock( &p_vout->change_lock );
 669 }
 670
 671 void vout_GetResetStatistic( vout_thread_t *p_vout, int *pi_displayed, int *pi_lost )
 672 {
 673     vlc_mutex_lock( &p_vout->change_lock );
 674
 675     *pi_displayed = p_vout->p->i_picture_displayed;
 676     *pi_lost = p_vout->p->i_picture_lost;
 677
 678     p_vout->p->i_picture_displayed = 0;
 679     p_vout->p->i_picture_lost = 0;
 680
 681     vlc_mutex_unlock( &p_vout->change_lock );
 682 }
 683
 684 void vout_Flush( vout_thread_t *p_vout, mtime_t i_date )
 685 {
 686     vlc_mutex_lock( &p_vout->picture_lock );
 687     p_vout->p->i_picture_displayed_date = 0;
 688     for( int i = 0; i < p_vout->render.i_pictures; i++ )
 689     {
 690         picture_t *p_pic = p_vout->render.pp_picture[i];
 691
 692         if( p_pic->i_status == READY_PICTURE ||
 693             p_pic->i_status == DISPLAYED_PICTURE )
 694         {
 695             /* We cannot change picture status if it is in READY_PICTURE state,
 696              * Just make sure they won't be displayed */
 697             if( p_pic->date > i_date )
 698                 p_pic->date = i_date;
 699         }
 700     }
 701     vlc_cond_signal( &p_vout->p->picture_wait );
 702     vlc_mutex_unlock( &p_vout->picture_lock );
 703 }
 704
 705 void vout_FixLeaks( vout_thread_t *p_vout, bool b_forced )
 706 {
 707     int i_pic, i_ready_pic;
 708
 709     vlc_mutex_lock( &p_vout->picture_lock );
 710
 711     for( i_pic = 0, i_ready_pic = 0; i_pic < p_vout->render.i_pictures && !b_forced; i_pic++ )
 712     {
 713         const picture_t *p_pic = p_vout->render.pp_picture[i_pic];
 714
 715         if( p_pic->i_status == READY_PICTURE )
 716         {
 717             i_ready_pic++;
 718             /* If we have at least 2 ready pictures, wait for the vout thread to
 719              * process one */
 720             if( i_ready_pic >= 2 )
 721                 break;
 722
 723             continue;
 724         }
 725
 726         if( p_pic->i_status == DISPLAYED_PICTURE )
 727         {
 728             /* If at least one displayed picture is not referenced
 729              * let vout free it */
 730             if( p_pic->i_refcount == 0 )
 731                 break;
 732         }
 733     }
 734     if( i_pic < p_vout->render.i_pictures && !b_forced )
 735     {
 736         vlc_mutex_unlock( &p_vout->picture_lock );
 737         return;
 738     }
 739
 740     /* Too many pictures are still referenced, there is probably a bug
 741      * with the decoder */
 742     if( !b_forced )
 743         msg_Err( p_vout, "pictures leaked, resetting the heap" );
 744
 745     /* Just free all the pictures */
 746     for( i_pic = 0; i_pic < p_vout->render.i_pictures; i_pic++ )
 747     {
 748         picture_t *p_pic = p_vout->render.pp_picture[i_pic];
 749
 750         msg_Dbg( p_vout, "[%d] %d %d", i_pic, p_pic->i_status, p_pic->i_refcount );
 751         p_pic->i_refcount = 0;
 752
 753         switch( p_pic->i_status )
 754         {
 755         case READY_PICTURE:
 756         case DISPLAYED_PICTURE:
 757         case RESERVED_PICTURE:
 758             if( p_pic != p_vout->p->p_picture_displayed )
 759                 vout_UsePictureLocked( p_vout, p_pic );
 760             break;
 761         }
 762     }
 763     vlc_cond_signal( &p_vout->p->picture_wait );
 764     vlc_mutex_unlock( &p_vout->picture_lock );
 765 }
 766 void vout_NextPicture( vout_thread_t *p_vout, mtime_t *pi_duration )
 767 {
 768     vlc_mutex_lock( &p_vout->picture_lock );
 769
 770     const mtime_t i_displayed_date = p_vout->p->i_picture_displayed_date;
 771
 772     p_vout->p->b_picture_displayed = false;
 773     p_vout->p->b_picture_empty = false;
 774     if( p_vout->p->p_picture_displayed )
 775     {
 776         p_vout->p->p_picture_displayed->date = 1;
 777         vlc_cond_signal( &p_vout->p->picture_wait );
 778     }
 779
 780     while( !p_vout->p->b_picture_displayed && !p_vout->p->b_picture_empty )
 781         vlc_cond_wait( &p_vout->p->picture_wait, &p_vout->picture_lock );
 782
 783     *pi_duration = __MAX( p_vout->p->i_picture_displayed_date - i_displayed_date, 0 );
 784
 785     /* TODO advance subpicture by the duration ... */
 786
 787     vlc_mutex_unlock( &p_vout->picture_lock );
 788 }
 789
 790 void vout_DisplayTitle( vout_thread_t *p_vout, const char *psz_title )
 791 {
 792     assert( psz_title );
 793
 794     if( !config_GetInt( p_vout, "osd" ) )
 795         return;
 796
 797     vlc_mutex_lock( &p_vout->change_lock );
 798     free( p_vout->p->psz_title );
 799     p_vout->p->psz_title = strdup( psz_title );
 800     vlc_mutex_unlock( &p_vout->change_lock );
 801 }
 802
 803 /*****************************************************************************
 804  * InitThread: initialize video output thread
 805  *****************************************************************************
 806  * This function is called from RunThread and performs the second step of the
 807  * initialization. It returns 0 on success. Note that the thread's flag are not
 808  * modified inside this function.
 809  * XXX You have to enter it with change_lock taken.
 810  *****************************************************************************/
 811 static int ChromaCreate( vout_thread_t *p_vout );
 812 static void ChromaDestroy( vout_thread_t *p_vout );
 813
 814 static bool ChromaIsEqual( const picture_heap_t *p_output, const picture_heap_t *p_render )
 815 {
 816      if( !vout_ChromaCmp( p_output->i_chroma, p_render->i_chroma ) )
 817          return false;
 818
 819      if( p_output->i_chroma != VLC_CODEC_RGB15 &&
 820          p_output->i_chroma != VLC_CODEC_RGB16 &&
 821          p_output->i_chroma != VLC_CODEC_RGB24 &&
 822          p_output->i_chroma != VLC_CODEC_RGB32 )
 823          return true;
 824
 825      return p_output->i_rmask == p_render->i_rmask &&
 826             p_output->i_gmask == p_render->i_gmask &&
 827             p_output->i_bmask == p_render->i_bmask;
 828 }
 829
 830 static int InitThread( vout_thread_t *p_vout )
 831 {
 832     int i, i_aspect_x, i_aspect_y;
 833
 834     /* Initialize output method, it allocates direct buffers for us */
 835     if( p_vout->pf_init( p_vout ) )
 836         return VLC_EGENERIC;
 837
 838     p_vout->p->p_picture_displayed = NULL;
 839
 840     if( !I_OUTPUTPICTURES )
 841     {
 842         msg_Err( p_vout, "plugin was unable to allocate at least "
 843                          "one direct buffer" );
 844         p_vout->pf_end( p_vout );
 845         return VLC_EGENERIC;
 846     }
 847
 848     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 849     {
 850         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 851                          "our internal buffers must have overflown." );
 852         p_vout->pf_end( p_vout );
 853         return VLC_EGENERIC;
 854     }
 855
 856     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 857
 858     AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );
 859
 860     AspectRatio( p_vout->fmt_in.i_aspect, &i_aspect_x, &i_aspect_y );
 861
 862     if( !p_vout->fmt_out.i_width || !p_vout->fmt_out.i_height )
 863     {
 864         p_vout->fmt_out.i_width = p_vout->fmt_out.i_visible_width =
 865             p_vout->output.i_width;
 866         p_vout->fmt_out.i_height = p_vout->fmt_out.i_visible_height =
 867             p_vout->output.i_height;
 868         p_vout->fmt_out.i_x_offset =  p_vout->fmt_out.i_y_offset = 0;
 869
 870         p_vout->fmt_out.i_aspect = p_vout->output.i_aspect;
 871         p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 872     }
 873     if( !p_vout->fmt_out.i_sar_num || !p_vout->fmt_out.i_sar_num )
 874     {
 875         p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_aspect *
 876             p_vout->fmt_out.i_height;
 877         p_vout->fmt_out.i_sar_den = VOUT_ASPECT_FACTOR *
 878             p_vout->fmt_out.i_width;
 879     }
 880
 881     vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
 882                  p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
 883
 884     AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
 885
 886     /* FIXME removed the need of both fmt_* and heap infos */
 887     /* Calculate shifts from system-updated masks */
 888     PictureHeapFixRgb( &p_vout->render );
 889     VideoFormatImportRgb( &p_vout->fmt_render, &p_vout->render );
 890
 891     PictureHeapFixRgb( &p_vout->output );
 892     VideoFormatImportRgb( &p_vout->fmt_out, &p_vout->output );
 893
 894     /* print some usefull debug info about different vout formats
 895      */
 896     msg_Dbg( p_vout, "pic render sz %ix%i, of (%i,%i), vsz %ix%i, 4cc %4.4s, ar %i:%i, sar %i:%i, msk r0x%x g0x%x b0x%x",
 897              p_vout->fmt_render.i_width, p_vout->fmt_render.i_height,
 898              p_vout->fmt_render.i_x_offset, p_vout->fmt_render.i_y_offset,
 899              p_vout->fmt_render.i_visible_width,
 900              p_vout->fmt_render.i_visible_height,
 901              (char*)&p_vout->fmt_render.i_chroma,
 902              i_aspect_x, i_aspect_y,
 903              p_vout->fmt_render.i_sar_num, p_vout->fmt_render.i_sar_den,
 904              p_vout->fmt_render.i_rmask, p_vout->fmt_render.i_gmask, p_vout->fmt_render.i_bmask );
 905
 906     msg_Dbg( p_vout, "pic in sz %ix%i, of (%i,%i), vsz %ix%i, 4cc %4.4s, ar %i:%i, sar %i:%i, msk r0x%x g0x%x b0x%x",
 907              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 908              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 909              p_vout->fmt_in.i_visible_width,
 910              p_vout->fmt_in.i_visible_height,
 911              (char*)&p_vout->fmt_in.i_chroma,
 912              i_aspect_x, i_aspect_y,
 913              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den,
 914              p_vout->fmt_in.i_rmask, p_vout->fmt_in.i_gmask, p_vout->fmt_in.i_bmask );
 915
 916     msg_Dbg( p_vout, "pic out sz %ix%i, of (%i,%i), vsz %ix%i, 4cc %4.4s, ar %i:%i, sar %i:%i, msk r0x%x g0x%x b0x%x",
 917              p_vout->fmt_out.i_width, p_vout->fmt_out.i_height,
 918              p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
 919              p_vout->fmt_out.i_visible_width,
 920              p_vout->fmt_out.i_visible_height,
 921              (char*)&p_vout->fmt_out.i_chroma,
 922              i_aspect_x, i_aspect_y,
 923              p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den,
 924              p_vout->fmt_out.i_rmask, p_vout->fmt_out.i_gmask, p_vout->fmt_out.i_bmask );
 925
 926     /* Check whether we managed to create direct buffers similar to
 927      * the render buffers, ie same size and chroma */
 928     if( ( p_vout->output.i_width == p_vout->render.i_width )
 929      && ( p_vout->output.i_height == p_vout->render.i_height )
 930      && ( ChromaIsEqual( &p_vout->output, &p_vout->render ) ) )
 931     {
 932         /* Cool ! We have direct buffers, we can ask the decoder to
 933          * directly decode into them ! Map the first render buffers to
 934          * the first direct buffers, but keep the first direct buffer
 935          * for memcpy operations */
 936         p_vout->p->b_direct = true;
 937
 938         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 939         {
 940             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 941                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 942                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 943             {
 944                 /* We have enough direct buffers so there's no need to
 945                  * try to use system memory buffers. */
 946                 break;
 947             }
 948             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 949             I_RENDERPICTURES++;
 950         }
 951
 952         msg_Dbg( p_vout, "direct render, mapping "
 953                  "render pictures 0-%i to system pictures 1-%i",
 954                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 955     }
 956     else
 957     {
 958         /* Rats... Something is wrong here, we could not find an output
 959          * plugin able to directly render what we decode. See if we can
 960          * find a chroma plugin to do the conversion */
 961         p_vout->p->b_direct = false;
 962
 963         if( ChromaCreate( p_vout ) )
 964         {
 965             p_vout->pf_end( p_vout );
 966             return VLC_EGENERIC;
 967         }
 968
 969         msg_Dbg( p_vout, "indirect render, mapping "
 970                  "render pictures 0-%i to system pictures %i-%i",
 971                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 972                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 973
 974         /* Append render buffers after the direct buffers */
 975         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 976         {
 977             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 978             I_RENDERPICTURES++;
 979
 980             /* Check if we have enough render pictures */
 981             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 982                 break;
 983         }
 984     }
 985
 986     /* Link pictures back to their heap */
 987     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 988     {
 989         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 990     }
 991
 992     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 993     {
 994         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 995     }
 996
 997     return VLC_SUCCESS;
 998 }
 999
1000 /*****************************************************************************
1001  * RunThread: video output thread
1002  *****************************************************************************
1003  * Video output thread. This function does only returns when the thread is
1004  * terminated. It handles the pictures arriving in the video heap and the
1005  * display device events.
1006  *****************************************************************************/
1007 static void* RunThread( void *p_this )
1008 {
1009     vout_thread_t *p_vout = p_this;
1010     int             i_idle_loops = 0;  /* loops without displaying a picture */
1011     int             i_picture_qtype_last = QTYPE_NONE;
1012
1013     bool            b_drop_late;
1014
1015     /*
1016      * Initialize thread
1017      */
1018     vlc_mutex_lock( &p_vout->change_lock );
1019     p_vout->b_error = InitThread( p_vout );
1020
1021     b_drop_late = var_CreateGetBool( p_vout, "drop-late-frames" );
1022
1023     /* signal the creation of the vout */
1024     p_vout->p->b_ready = true;
1025     vlc_cond_signal( &p_vout->p->change_wait );
1026
1027     if( p_vout->b_error )
1028     {
1029         EndThread( p_vout );
1030         vlc_mutex_unlock( &p_vout->change_lock );
1031         return NULL;
1032     }
1033
1034     /*
1035      * Main loop - it is not executed if an error occurred during
1036      * initialization
1037      */
1038     while( !p_vout->p->b_done && !p_vout->b_error )
1039     {
1040         /* Initialize loop variables */
1041         const mtime_t current_date = mdate();
1042         picture_t *p_picture;
1043         picture_t *p_filtered_picture;
1044         mtime_t display_date;
1045         picture_t *p_directbuffer;
1046         int i_index;
1047
1048         if( p_vout->p->b_title_show && p_vout->p->psz_title )
1049             DisplayTitleOnOSD( p_vout );
1050
1051         vlc_mutex_lock( &p_vout->picture_lock );
1052
1053         /* Look for the earliest picture but after the last displayed one */
1054         picture_t *p_last = p_vout->p->p_picture_displayed;;
1055
1056         p_picture = NULL;
1057         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
1058         {
1059             picture_t *p_pic = PP_RENDERPICTURE[i_index];
1060
1061             if( p_pic->i_status != READY_PICTURE )
1062                 continue;
1063
1064             if( p_vout->p->b_paused && p_last && p_last->date > 1 )
1065                 continue;
1066
1067             if( p_last && p_pic != p_last && p_pic->date <= p_last->date )
1068             {
1069                 /* Drop old picture */
1070                 vout_UsePictureLocked( p_vout, p_pic );
1071             }
1072             else if( !p_vout->p->b_paused && !p_pic->b_force && p_pic != p_last &&
1073                      p_pic->date < current_date + p_vout->p->render_time &&
1074                      b_drop_late )
1075             {
1076                 /* Picture is late: it will be destroyed and the thread
1077                  * will directly choose the next picture */
1078                 vout_UsePictureLocked( p_vout, p_pic );
1079                 p_vout->p->i_picture_lost++;
1080
1081                 msg_Warn( p_vout, "late picture skipped (%"PRId64" > %d)",
1082                                   current_date - p_pic->date, - p_vout->p->render_time );
1083             }
1084             else if( ( !p_last || p_last->date < p_pic->date ) &&
1085                      ( p_picture == NULL || p_pic->date < p_picture->date ) )
1086             {
1087                 p_picture = p_pic;
1088             }
1089         }
1090         if( !p_picture )
1091         {
1092             p_picture = p_last;
1093
1094             if( !p_vout->p->b_picture_empty )
1095             {
1096                 p_vout->p->b_picture_empty = true;
1097                 vlc_cond_signal( &p_vout->p->picture_wait );
1098             }
1099         }
1100
1101         display_date = 0;
1102         if( p_picture )
1103         {
1104             display_date = p_picture->date;
1105
1106             /* If we found better than the last picture, destroy it */
1107             if( p_last && p_picture != p_last )
1108             {
1109                 vout_UsePictureLocked( p_vout, p_last );
1110                 p_vout->p->p_picture_displayed = p_last = NULL;
1111             }
1112
1113             /* Compute FPS rate */
1114             p_vout->p->p_fps_sample[ p_vout->p->c_fps_samples++ % VOUT_FPS_SAMPLES ] = display_date;
1115
1116             if( !p_vout->p->b_paused && display_date > current_date + VOUT_DISPLAY_DELAY )
1117             {
1118                 /* A picture is ready to be rendered, but its rendering date
1119                  * is far from the current one so the thread will perform an
1120                  * empty loop as if no picture were found. The picture state
1121                  * is unchanged */
1122                 p_picture    = NULL;
1123                 display_date = 0;
1124             }
1125             else if( p_picture == p_last )
1126             {
1127                 /* We are asked to repeat the previous picture, but we first
1128                  * wait for a couple of idle loops */
1129                 if( i_idle_loops < 4 )
1130                 {
1131                     p_picture    = NULL;
1132                     display_date = 0;
1133                 }
1134                 else
1135                 {
1136                     /* We set the display date to something high, otherwise
1137                      * we'll have lots of problems with late pictures */
1138                     display_date = current_date + p_vout->p->render_time;
1139                 }
1140             }
1141             else if( p_vout->p->b_paused && display_date > current_date + VOUT_DISPLAY_DELAY )
1142             {
1143                 display_date = current_date + VOUT_DISPLAY_DELAY;
1144             }
1145
1146             if( p_picture )
1147             {
1148                 if( p_picture->date > 1 )
1149                 {
1150                     p_vout->p->i_picture_displayed_date = p_picture->date;
1151                     if( p_picture != p_last && !p_vout->p->b_picture_displayed )
1152                     {
1153                         p_vout->p->b_picture_displayed = true;
1154                         vlc_cond_signal( &p_vout->p->picture_wait );
1155                     }
1156                 }
1157                 p_vout->p->p_picture_displayed = p_picture;
1158             }
1159         }
1160
1161         /* */
1162         const int i_postproc_type = p_vout->p->i_picture_qtype;
1163         const int i_postproc_state = (p_vout->p->i_picture_qtype != QTYPE_NONE) - (i_picture_qtype_last != QTYPE_NONE);
1164
1165         vlc_mutex_unlock( &p_vout->picture_lock );
1166
1167         if( p_picture == NULL )
1168             i_idle_loops++;
1169
1170         p_filtered_picture = NULL;
1171         if( p_picture )
1172             p_filtered_picture = filter_chain_VideoFilter( p_vout->p->p_vf2_chain,
1173                                                            p_picture );
1174
1175         bool b_snapshot = false;
1176         if( vlc_mutex_trylock( &p_vout->p->snapshot.lock ) == 0 )
1177         {
1178              b_snapshot = p_vout->p->snapshot.i_request > 0
1179                        && p_picture != NULL;
1180              vlc_mutex_unlock( &p_vout->p->snapshot.lock );
1181         }
1182
1183         /*
1184          * Check for subpictures to display
1185          */
1186         subpicture_t *p_subpic = NULL;
1187         if( display_date > 0 )
1188             p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date,
1189                                             p_vout->p->b_paused, b_snapshot );
1190
1191         /*
1192          * Perform rendering
1193          */
1194         p_vout->p->i_picture_displayed++;
1195         p_directbuffer = vout_RenderPicture( p_vout, p_filtered_picture,
1196                                              p_subpic, p_vout->p->b_paused );
1197
1198         /*
1199          * Take a snapshot if requested
1200          */
1201         if( p_directbuffer && b_snapshot )
1202         {
1203             vlc_mutex_lock( &p_vout->p->snapshot.lock );
1204             assert( p_vout->p->snapshot.i_request > 0 );
1205             while( p_vout->p->snapshot.i_request > 0 )
1206             {
1207                 picture_t *p_pic = picture_New( p_vout->fmt_out.i_chroma,
1208                                                 p_vout->fmt_out.i_width,
1209                                                 p_vout->fmt_out.i_height,
1210                                                 p_vout->fmt_out.i_aspect  );
1211                 if( !p_pic )
1212                     break;
1213
1214                 picture_Copy( p_pic, p_directbuffer );
1215
1216                 p_pic->p_next = p_vout->p->snapshot.p_picture;
1217                 p_vout->p->snapshot.p_picture = p_pic;
1218                 p_vout->p->snapshot.i_request--;
1219             }
1220             vlc_cond_broadcast( &p_vout->p->snapshot.wait );
1221             vlc_mutex_unlock( &p_vout->p->snapshot.lock );
1222         }
1223
1224         /*
1225          * Call the plugin-specific rendering method if there is one
1226          */
1227         if( p_filtered_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
1228         {
1229             /* Render the direct buffer returned by vout_RenderPicture */
1230             p_vout->pf_render( p_vout, p_directbuffer );
1231         }
1232
1233         /*
1234          * Sleep, wake up
1235          */
1236         if( display_date != 0 && p_directbuffer != NULL )
1237         {
1238             mtime_t current_render_time = mdate() - current_date;
1239             /* if render time is very large we don't include it in the mean */
1240             if( current_render_time < p_vout->p->render_time +
1241                 VOUT_DISPLAY_DELAY )
1242             {
1243                 /* Store render time using a sliding mean weighting to
1244                  * current value in a 3 to 1 ratio*/
1245                 p_vout->p->render_time *= 3;
1246                 p_vout->p->render_time += current_render_time;
1247                 p_vout->p->render_time >>= 2;
1248             }
1249             else
1250                 msg_Dbg( p_vout, "skipped big render time %d > %d", (int) current_render_time,
1251                  (int) (p_vout->p->render_time +VOUT_DISPLAY_DELAY ) ) ;
1252         }
1253
1254         /* Give back change lock */
1255         vlc_mutex_unlock( &p_vout->change_lock );
1256
1257         /* Sleep a while or until a given date */
1258         if( display_date != 0 )
1259         {
1260             /* If there are *vout* filters in the chain, better give them the picture
1261              * in advance */
1262             if( !p_vout->p->psz_filter_chain || !*p_vout->p->psz_filter_chain )
1263             {
1264                 mwait( display_date - VOUT_MWAIT_TOLERANCE );
1265             }
1266         }
1267         else
1268         {
1269             /* Wait until a frame is being sent or a spurious wakeup (not a problem here) */
1270             vlc_mutex_lock( &p_vout->picture_lock );
1271             vlc_cond_timedwait( &p_vout->p->picture_wait, &p_vout->picture_lock, current_date + VOUT_IDLE_SLEEP );
1272             vlc_mutex_unlock( &p_vout->picture_lock );
1273         }
1274
1275         /* On awakening, take back lock and send immediately picture
1276          * to display. */
1277         /* Note: p_vout->p->b_done could be true here and now */
1278         vlc_mutex_lock( &p_vout->change_lock );
1279
1280         /*
1281          * Display the previously rendered picture
1282          */
1283         if( p_filtered_picture != NULL && p_directbuffer != NULL )
1284         {
1285             /* Display the direct buffer returned by vout_RenderPicture */
1286             if( p_vout->pf_display )
1287                 p_vout->pf_display( p_vout, p_directbuffer );
1288
1289             /* Tell the vout this was the last picture and that it does not
1290              * need to be forced anymore. */
1291             p_picture->b_force = false;
1292         }
1293
1294         /* Drop the filtered picture if created by video filters */
1295         if( p_filtered_picture != NULL && p_filtered_picture != p_picture )
1296         {
1297             vlc_mutex_lock( &p_vout->picture_lock );
1298             vout_UsePictureLocked( p_vout, p_filtered_picture );
1299             vlc_mutex_unlock( &p_vout->picture_lock );
1300         }
1301
1302         if( p_picture != NULL )
1303         {
1304             /* Reinitialize idle loop count */
1305             i_idle_loops = 0;
1306         }
1307
1308         /*
1309          * Check events and manage thread
1310          */
1311         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
1312         {
1313             /* A fatal error occurred, and the thread must terminate
1314              * immediately, without displaying anything - setting b_error to 1
1315              * causes the immediate end of the main while() loop. */
1316             // FIXME pf_end
1317             p_vout->b_error = 1;
1318             break;
1319         }
1320
1321         while( p_vout->i_changes & VOUT_ON_TOP_CHANGE )
1322         {
1323             p_vout->i_changes &= ~VOUT_ON_TOP_CHANGE;
1324             vlc_mutex_unlock( &p_vout->change_lock );
1325             vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, p_vout->b_on_top );
1326             vlc_mutex_lock( &p_vout->change_lock );
1327         }
1328
1329         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
1330         {
1331             /* this must only happen when the vout plugin is incapable of
1332              * rescaling the picture itself. In this case we need to destroy
1333              * the current picture buffers and recreate new ones with the right
1334              * dimensions */
1335             int i;
1336
1337             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
1338
1339             assert( !p_vout->p->b_direct );
1340
1341             ChromaDestroy( p_vout );
1342
1343             vlc_mutex_lock( &p_vout->picture_lock );
1344
1345             p_vout->pf_end( p_vout );
1346
1347             p_vout->p->p_picture_displayed = NULL;
1348             for( i = 0; i < I_OUTPUTPICTURES; i++ )
1349                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
1350             vlc_cond_signal( &p_vout->p->picture_wait );
1351
1352             I_OUTPUTPICTURES = 0;
1353
1354             if( p_vout->pf_init( p_vout ) )
1355             {
1356                 msg_Err( p_vout, "cannot resize display" );
1357                 /* FIXME: pf_end will be called again in EndThread() */
1358                 p_vout->b_error = 1;
1359             }
1360
1361             vlc_mutex_unlock( &p_vout->picture_lock );
1362
1363             /* Need to reinitialise the chroma plugin. Since we might need
1364              * resizing too and it's not sure that we already had it,
1365              * recreate the chroma plugin chain from scratch. */
1366             /* dionoea */
1367             if( ChromaCreate( p_vout ) )
1368             {
1369                 msg_Err( p_vout, "WOW THIS SUCKS BIG TIME!!!!!" );
1370                 p_vout->b_error = 1;
1371             }
1372             if( p_vout->b_error )
1373                 break;
1374         }
1375
1376         if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1377         {
1378             /* This happens when the picture buffers need to be recreated.
1379              * This is useful on multimonitor displays for instance.
1380              *
1381              * Warning: This only works when the vout creates only 1 picture
1382              * buffer!! */
1383             p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1384
1385             if( !p_vout->p->b_direct )
1386                 ChromaDestroy( p_vout );
1387
1388             vlc_mutex_lock( &p_vout->picture_lock );
1389
1390             p_vout->pf_end( p_vout );
1391
1392             I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1393
1394             p_vout->b_error = InitThread( p_vout );
1395             if( p_vout->b_error )
1396                 msg_Err( p_vout, "InitThread after VOUT_PICTURE_BUFFERS_CHANGE failed" );
1397
1398             vlc_cond_signal( &p_vout->p->picture_wait );
1399             vlc_mutex_unlock( &p_vout->picture_lock );
1400
1401             if( p_vout->b_error )
1402                 break;
1403         }
1404
1405         /* Post processing */
1406         if( i_postproc_state == 1 )
1407             PostProcessEnable( p_vout );
1408         else if( i_postproc_state == -1 )
1409             PostProcessDisable( p_vout );
1410         if( i_postproc_state != 0 )
1411             i_picture_qtype_last = i_postproc_type;
1412
1413         /* Check for "video filter2" changes */
1414         vlc_mutex_lock( &p_vout->p->vfilter_lock );
1415         if( p_vout->p->psz_vf2 )
1416         {
1417             es_format_t fmt;
1418
1419             es_format_Init( &fmt, VIDEO_ES, p_vout->fmt_render.i_chroma );
1420             fmt.video = p_vout->fmt_render;
1421             filter_chain_Reset( p_vout->p->p_vf2_chain, &fmt, &fmt );
1422
1423             if( filter_chain_AppendFromString( p_vout->p->p_vf2_chain,
1424                                                p_vout->p->psz_vf2 ) < 0 )
1425                 msg_Err( p_vout, "Video filter chain creation failed" );
1426
1427             free( p_vout->p->psz_vf2 );
1428             p_vout->p->psz_vf2 = NULL;
1429
1430             if( i_picture_qtype_last != QTYPE_NONE )
1431                 PostProcessSetFilterQuality( p_vout );
1432         }
1433         vlc_mutex_unlock( &p_vout->p->vfilter_lock );
1434     }
1435
1436     /*
1437      * Error loop - wait until the thread destruction is requested
1438      */
1439     if( p_vout->b_error )
1440         ErrorThread( p_vout );
1441
1442     /* End of thread */
1443     CleanThread( p_vout );
1444     EndThread( p_vout );
1445     vlc_mutex_unlock( &p_vout->change_lock );
1446
1447     return NULL;
1448 }
1449
1450 /*****************************************************************************
1451  * ErrorThread: RunThread() error loop
1452  *****************************************************************************
1453  * This function is called when an error occurred during thread main's loop.
1454  * The thread can still receive feed, but must be ready to terminate as soon
1455  * as possible.
1456  *****************************************************************************/
1457 static void ErrorThread( vout_thread_t *p_vout )
1458 {
1459     /* Wait until a `close' order */
1460     while( !p_vout->p->b_done )
1461         vlc_cond_wait( &p_vout->p->change_wait, &p_vout->change_lock );
1462 }
1463
1464 /*****************************************************************************
1465  * CleanThread: clean up after InitThread
1466  *****************************************************************************
1467  * This function is called after a sucessful
1468  * initialization. It frees all resources allocated by InitThread.
1469  * XXX You have to enter it with change_lock taken.
1470  *****************************************************************************/
1471 static void CleanThread( vout_thread_t *p_vout )
1472 {
1473     int     i_index;                                        /* index in heap */
1474
1475     if( !p_vout->p->b_direct )
1476         ChromaDestroy( p_vout );
1477
1478     /* Destroy all remaining pictures */
1479     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1480     {
1481         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1482         {
1483             free( p_vout->p_picture[i_index].p_data_orig );
1484         }
1485     }
1486
1487     /* Destroy translation tables */
1488     if( !p_vout->b_error )
1489         p_vout->pf_end( p_vout );
1490 }
1491
1492 /*****************************************************************************
1493  * EndThread: thread destruction
1494  *****************************************************************************
1495  * This function is called when the thread ends.
1496  * It frees all resources not allocated by InitThread.
1497  * XXX You have to enter it with change_lock taken.
1498  *****************************************************************************/
1499 static void EndThread( vout_thread_t *p_vout )
1500 {
1501 #ifdef STATS
1502     {
1503         struct tms cpu_usage;
1504         times( &cpu_usage );
1505
1506         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1507                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1508     }
1509 #endif
1510
1511     /* FIXME does that function *really* need to be called inside the thread ? */
1512
1513     /* Detach subpicture unit from both input and vout */
1514     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), false );
1515     vlc_object_detach( p_vout->p_spu );
1516
1517     /* Destroy the video filters2 */
1518     filter_chain_Delete( p_vout->p->p_vf2_chain );
1519 }
1520
1521 /* Thread helpers */
1522 static picture_t *ChromaGetPicture( filter_t *p_filter )
1523 {
1524     picture_t *p_pic = (picture_t *)p_filter->p_owner;
1525     p_filter->p_owner = NULL;
1526     return p_pic;
1527 }
1528
1529 static int ChromaCreate( vout_thread_t *p_vout )
1530 {
1531     static const char typename[] = "chroma";
1532     filter_t *p_chroma;
1533
1534     /* Choose the best module */
1535     p_chroma = p_vout->p->p_chroma =
1536         vlc_custom_create( p_vout, sizeof(filter_t), VLC_OBJECT_GENERIC,
1537                            typename );
1538
1539     vlc_object_attach( p_chroma, p_vout );
1540
1541     /* TODO: Set the fmt_in and fmt_out stuff here */
1542     p_chroma->fmt_in.video = p_vout->fmt_render;
1543     p_chroma->fmt_out.video = p_vout->fmt_out;
1544     VideoFormatImportRgb( &p_chroma->fmt_in.video, &p_vout->render );
1545     VideoFormatImportRgb( &p_chroma->fmt_out.video, &p_vout->output );
1546
1547     p_chroma->p_module = module_need( p_chroma, "video filter2", NULL, false );
1548
1549     if( p_chroma->p_module == NULL )
1550     {
1551         msg_Err( p_vout, "no chroma module for %4.4s to %4.4s i=%dx%d o=%dx%d",
1552                  (char*)&p_vout->render.i_chroma,
1553                  (char*)&p_vout->output.i_chroma,
1554                  p_chroma->fmt_in.video.i_width, p_chroma->fmt_in.video.i_height,
1555                  p_chroma->fmt_out.video.i_width, p_chroma->fmt_out.video.i_height
1556                  );
1557
1558         vlc_object_release( p_vout->p->p_chroma );
1559         p_vout->p->p_chroma = NULL;
1560
1561         return VLC_EGENERIC;
1562     }
1563     p_chroma->pf_vout_buffer_new = ChromaGetPicture;
1564     return VLC_SUCCESS;
1565 }
1566
1567 static void ChromaDestroy( vout_thread_t *p_vout )
1568 {
1569     assert( !p_vout->p->b_direct );
1570
1571     if( !p_vout->p->p_chroma )
1572         return;
1573
1574     module_unneed( p_vout->p->p_chroma, p_vout->p->p_chroma->p_module );
1575     vlc_object_release( p_vout->p->p_chroma );
1576     p_vout->p->p_chroma = NULL;
1577 }
1578
1579 /* following functions are local */
1580 static void AspectRatio( int i_aspect, int *i_aspect_x, int *i_aspect_y )
1581 {
1582     const int i_pgcd = i_aspect ? GCD( i_aspect, VOUT_ASPECT_FACTOR ) : 1;
1583     *i_aspect_x = i_aspect / i_pgcd;
1584     *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
1585 }
1586
1587 /**
1588  * This function copies all RGB informations from a picture_heap_t into
1589  * a video_format_t
1590  */
1591 static void VideoFormatImportRgb( video_format_t *p_fmt, const picture_heap_t *p_heap )
1592 {
1593     p_fmt->i_rmask = p_heap->i_rmask;
1594     p_fmt->i_gmask = p_heap->i_gmask;
1595     p_fmt->i_bmask = p_heap->i_bmask;
1596     p_fmt->i_rrshift = p_heap->i_rrshift;
1597     p_fmt->i_lrshift = p_heap->i_lrshift;
1598     p_fmt->i_rgshift = p_heap->i_rgshift;
1599     p_fmt->i_lgshift = p_heap->i_lgshift;
1600     p_fmt->i_rbshift = p_heap->i_rbshift;
1601     p_fmt->i_lbshift = p_heap->i_lbshift;
1602 }
1603
1604 /**
1605  * This funtion copes all RGB informations from a video_format_t into
1606  * a picture_heap_t
1607  */
1608 static void VideoFormatExportRgb( const video_format_t *p_fmt, picture_heap_t *p_heap )
1609 {
1610     p_heap->i_rmask = p_fmt->i_rmask;
1611     p_heap->i_gmask = p_fmt->i_gmask;
1612     p_heap->i_bmask = p_fmt->i_bmask;
1613     p_heap->i_rrshift = p_fmt->i_rrshift;
1614     p_heap->i_lrshift = p_fmt->i_lrshift;
1615     p_heap->i_rgshift = p_fmt->i_rgshift;
1616     p_heap->i_lgshift = p_fmt->i_lgshift;
1617     p_heap->i_rbshift = p_fmt->i_rbshift;
1618     p_heap->i_lbshift = p_fmt->i_lbshift;
1619 }
1620
1621 /**
1622  * This function computes rgb shifts from masks
1623  */
1624 static void PictureHeapFixRgb( picture_heap_t *p_heap )
1625 {
1626     video_format_t fmt;
1627
1628     /* */
1629     fmt.i_chroma = p_heap->i_chroma;
1630     VideoFormatImportRgb( &fmt, p_heap );
1631
1632     /* */
1633     video_format_FixRgb( &fmt );
1634
1635     VideoFormatExportRgb( &fmt, p_heap );
1636 }
1637
1638 /*****************************************************************************
1639  * object variables callbacks: a bunch of object variables are used by the
1640  * interfaces to interact with the vout.
1641  *****************************************************************************/
1642 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1643                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1644 {
1645     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1646     input_thread_t *p_input;
1647     (void)psz_cmd; (void)oldval; (void)p_data;
1648
1649     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1650                                                  FIND_PARENT );
1651     if (!p_input)
1652     {
1653         msg_Err( p_vout, "Input not found" );
1654         return VLC_EGENERIC;
1655     }
1656
1657     var_SetBool( p_vout, "intf-change", true );
1658
1659     /* Modify input as well because the vout might have to be restarted */
1660     var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1661     var_SetString( p_input, "vout-filter", newval.psz_string );
1662
1663     /* Now restart current video stream */
1664     input_Control( p_input, INPUT_RESTART_ES, -VIDEO_ES );
1665     vlc_object_release( p_input );
1666
1667     return VLC_SUCCESS;
1668 }
1669
1670 /*****************************************************************************
1671  * Video Filter2 stuff
1672  *****************************************************************************/
1673 static int VideoFilter2Callback( vlc_object_t *p_this, char const *psz_cmd,
1674                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1675 {
1676     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1677     (void)psz_cmd; (void)oldval; (void)p_data;
1678
1679     vlc_mutex_lock( &p_vout->p->vfilter_lock );
1680     p_vout->p->psz_vf2 = strdup( newval.psz_string );
1681     vlc_mutex_unlock( &p_vout->p->vfilter_lock );
1682
1683     return VLC_SUCCESS;
1684 }
1685
1686 /*****************************************************************************
1687  * Post-processing
1688  *****************************************************************************/
1689 static bool PostProcessIsPresent( const char *psz_filter )
1690 {
1691     const char  *psz_pp = "postproc";
1692     const size_t i_pp = strlen(psz_pp);
1693     return psz_filter &&
1694            !strncmp( psz_filter, psz_pp, strlen(psz_pp) ) &&
1695            ( psz_filter[i_pp] == '\0' || psz_filter[i_pp] == ':' );
1696 }
1697
1698 static int PostProcessCallback( vlc_object_t *p_this, char const *psz_cmd,
1699                                 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1700 {
1701     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1702     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_data);
1703
1704     static const char *psz_pp = "postproc";
1705
1706     char *psz_vf2 = var_GetString( p_vout, "video-filter" );
1707
1708     if( newval.i_int <= 0 )
1709     {
1710         if( PostProcessIsPresent( psz_vf2 ) )
1711         {
1712             strcpy( psz_vf2, &psz_vf2[strlen(psz_pp)] );
1713             if( *psz_vf2 == ':' )
1714                 strcpy( psz_vf2, &psz_vf2[1] );
1715         }
1716     }
1717     else
1718     {
1719         if( !PostProcessIsPresent( psz_vf2 ) )
1720         {
1721             if( psz_vf2 )
1722             {
1723                 char *psz_tmp = psz_vf2;
1724                 if( asprintf( &psz_vf2, "%s:%s", psz_pp, psz_tmp ) < 0 )
1725                     psz_vf2 = psz_tmp;
1726                 else
1727                     free( psz_tmp );
1728             }
1729             else
1730             {
1731                 psz_vf2 = strdup( psz_pp );
1732             }
1733         }
1734     }
1735     if( psz_vf2 )
1736     {
1737         var_SetString( p_vout, "video-filter", psz_vf2 );
1738         free( psz_vf2 );
1739     }
1740
1741     return VLC_SUCCESS;
1742 }
1743 static void PostProcessEnable( vout_thread_t *p_vout )
1744 {
1745     msg_Dbg( p_vout, "Post-processing available" );
1746     var_Create( p_vout, "postprocess", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
1747     for( int i = 0; i <= 6; i++ )
1748     {
1749         vlc_value_t val;
1750         vlc_value_t text;
1751         char psz_text[1+1];
1752
1753         val.i_int = i;
1754         snprintf( psz_text, sizeof(psz_text), "%d", i );
1755         if( i == 0 )
1756             text.psz_string = _("Disable");
1757         else
1758             text.psz_string = psz_text;
1759         var_Change( p_vout, "postprocess", VLC_VAR_ADDCHOICE, &val, &text );
1760     }
1761     var_AddCallback( p_vout, "postprocess", PostProcessCallback, NULL );
1762
1763     /* */
1764     char *psz_filter = var_GetNonEmptyString( p_vout, "video-filter" );
1765     int i_postproc_q = 0;
1766     if( PostProcessIsPresent( psz_filter ) )
1767         i_postproc_q = var_CreateGetInteger( p_vout, "postproc-q" );
1768
1769     var_SetInteger( p_vout, "postprocess", i_postproc_q );
1770
1771     free( psz_filter );
1772 }
1773 static void PostProcessDisable( vout_thread_t *p_vout )
1774 {
1775     msg_Dbg( p_vout, "Post-processing no more available" );
1776     var_Destroy( p_vout, "postprocess" );
1777 }
1778 static void PostProcessSetFilterQuality( vout_thread_t *p_vout )
1779 {
1780     vlc_object_t *p_pp = vlc_object_find_name( p_vout, "postproc", FIND_CHILD );
1781     if( !p_pp )
1782         return;
1783
1784     var_SetInteger( p_pp, "postproc-q", var_GetInteger( p_vout, "postprocess" ) );
1785     vlc_object_release( p_pp );
1786 }
1787
1788
1789 static void DisplayTitleOnOSD( vout_thread_t *p_vout )
1790 {
1791     const mtime_t i_start = mdate();
1792     const mtime_t i_stop = i_start + INT64_C(1000) * p_vout->p->i_title_timeout;
1793
1794     if( i_stop <= i_start )
1795         return
1796
1797     vlc_assert_locked( &p_vout->change_lock );
1798
1799     vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1800                            p_vout->p->psz_title, NULL,
1801                            p_vout->p->i_title_position,
1802                            30 + p_vout->fmt_in.i_width
1803                               - p_vout->fmt_in.i_visible_width
1804                               - p_vout->fmt_in.i_x_offset,
1805                            20 + p_vout->fmt_in.i_y_offset,
1806                            i_start, i_stop );
1807
1808     free( p_vout->p->psz_title );
1809
1810     p_vout->p->psz_title = NULL;
1811 }
1812
1813 /*****************************************************************************
1814  * Deinterlacing
1815  *****************************************************************************/
1816 typedef struct
1817 {
1818     const char *psz_mode;
1819     const char *psz_description;
1820     bool       b_vout_filter;
1821 } deinterlace_mode_t;
1822
1823 /* XXX
1824  * You can use the non vout filter if and only if the video properties stay the
1825  * same (width/height/chroma/fps), at least for now.
1826  */
1827 static const deinterlace_mode_t p_deinterlace_mode[] = {
1828     { "",           "Disable",  false },
1829     { "discard",    "Discard",  true },
1830     { "blend",      "Blend",    false },
1831     { "mean",       "Mean",     true  },
1832     { "bob",        "Bob",      true },
1833     { "linear",     "Linear",   true },
1834     { "x",          "X",        false },
1835     { NULL, NULL, true }
1836 };
1837
1838 static char *FilterFind( char *psz_filter_base, const char *psz_module )
1839 {
1840     const size_t i_module = strlen( psz_module );
1841     const char *psz_filter = psz_filter_base;
1842
1843     if( !psz_filter || i_module <= 0 )
1844         return NULL;
1845
1846     for( ;; )
1847     {
1848         char *psz_find = strstr( psz_filter, psz_module );
1849         if( !psz_find )
1850             return NULL;
1851         if( psz_find[i_module] == '\0' || psz_find[i_module] == ':' )
1852             return psz_find;
1853         psz_filter = &psz_find[i_module];
1854     }
1855 }
1856
1857 static bool DeinterlaceIsPresent( vout_thread_t *p_vout, bool b_vout_filter )
1858 {
1859     char *psz_filter = var_GetNonEmptyString( p_vout, b_vout_filter ? "vout-filter" : "video-filter" );
1860
1861     bool b_found = FilterFind( psz_filter, "deinterlace" ) != NULL;
1862
1863     free( psz_filter );
1864
1865     return b_found;
1866 }
1867
1868 static void DeinterlaceRemove( vout_thread_t *p_vout, bool b_vout_filter )
1869 {
1870     const char *psz_variable = b_vout_filter ? "vout-filter" : "video-filter";
1871     char *psz_filter = var_GetNonEmptyString( p_vout, psz_variable );
1872
1873     char *psz = FilterFind( psz_filter, "deinterlace" );
1874     if( !psz )
1875     {
1876         free( psz_filter );
1877         return;
1878     }
1879
1880     /* */
1881     strcpy( &psz[0], &psz[strlen("deinterlace")] );
1882     if( *psz == ':' )
1883         strcpy( &psz[0], &psz[1] );
1884
1885     var_SetString( p_vout, psz_variable, psz_filter );
1886     free( psz_filter );
1887 }
1888 static void DeinterlaceAdd( vout_thread_t *p_vout, bool b_vout_filter )
1889 {
1890     const char *psz_variable = b_vout_filter ? "vout-filter" : "video-filter";
1891
1892     char *psz_filter = var_GetNonEmptyString( p_vout, psz_variable );
1893
1894     if( FilterFind( psz_filter, "deinterlace" ) )
1895     {
1896         free( psz_filter );
1897         return;
1898     }
1899
1900     /* */
1901     if( psz_filter )
1902     {
1903         char *psz_tmp = psz_filter;
1904         if( asprintf( &psz_filter, "%s:%s", psz_tmp, "deinterlace" ) < 0 )
1905             psz_filter = psz_tmp;
1906         else
1907             free( psz_tmp );
1908     }
1909     else
1910     {
1911         psz_filter = strdup( "deinterlace" );
1912     }
1913
1914     if( psz_filter )
1915     {
1916         var_SetString( p_vout, psz_variable, psz_filter );
1917         free( psz_filter );
1918     }
1919 }
1920
1921 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1922                                 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1923 {
1924     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1925
1926     /* */
1927     const deinterlace_mode_t *p_mode;
1928     for( p_mode = &p_deinterlace_mode[0]; p_mode->psz_mode; p_mode++ )
1929     {
1930         if( !strcmp( p_mode->psz_mode, newval.psz_string ?: "" ) )
1931             break;
1932     }
1933     if( !p_mode->psz_mode )
1934     {
1935         msg_Err( p_this, "Invalid value (%s) ignored", newval.psz_string );
1936         return VLC_EGENERIC;
1937     }
1938
1939     /* We have to set input variable to ensure restart support
1940      * XXX it is only needed because of vout-filter but must be done
1941      * for non video filter anyway */
1942     input_thread_t *p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
1943     if( p_input )
1944     {
1945         var_Create( p_input, "vout-deinterlace", VLC_VAR_STRING );
1946         var_SetString( p_input, "vout-deinterlace", p_mode->psz_mode );
1947
1948         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1949         var_SetString( p_input, "deinterlace-mode", p_mode->psz_mode );
1950
1951         var_Create( p_input, "sout-deinterlace-mode", VLC_VAR_STRING );
1952         var_SetString( p_input, "sout-deinterlace-mode", p_mode->psz_mode );
1953
1954         vlc_object_release( p_input );
1955     }
1956
1957     char *psz_old;
1958
1959     if( p_mode->b_vout_filter )
1960     {
1961         psz_old = var_CreateGetString( p_vout, "deinterlace-mode" );
1962     }
1963     else
1964     {
1965         psz_old = var_CreateGetString( p_vout, "sout-deinterlace-mode" );
1966         var_SetString( p_vout, "sout-deinterlace-mode", p_mode->psz_mode );
1967     }
1968
1969     /* */
1970     if( !strcmp( p_mode->psz_mode, "" ) )
1971     {
1972         DeinterlaceRemove( p_vout, false );
1973         DeinterlaceRemove( p_vout, true );
1974     }
1975     else if( !DeinterlaceIsPresent( p_vout, p_mode->b_vout_filter ) )
1976     {
1977         DeinterlaceRemove( p_vout, !p_mode->b_vout_filter );
1978         DeinterlaceAdd( p_vout, p_mode->b_vout_filter );
1979     }
1980     else
1981     {
1982         DeinterlaceRemove( p_vout, !p_mode->b_vout_filter );
1983         if( psz_old && strcmp( psz_old, p_mode->psz_mode ) )
1984             var_TriggerCallback( p_vout, p_mode->b_vout_filter ? "vout-filter" : "video-filter" );
1985     }
1986     free( psz_old );
1987
1988     (void)psz_cmd; (void) oldval; (void) p_data;
1989     return VLC_SUCCESS;
1990 }
1991
1992 static void DeinterlaceEnable( vout_thread_t *p_vout )
1993 {
1994     vlc_value_t val, text;
1995
1996     if( !p_vout->p->b_first_vout )
1997         return;
1998
1999     msg_Dbg( p_vout, "Deinterlacing available" );
2000
2001     /* Create the configuration variable */
2002     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
2003     text.psz_string = _("Deinterlace");
2004     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
2005
2006     for( int i = 0; p_deinterlace_mode[i].psz_mode; i++ )
2007     {
2008         val.psz_string  = (char*)p_deinterlace_mode[i].psz_mode;
2009         text.psz_string = (char*)vlc_gettext(p_deinterlace_mode[i].psz_description);
2010         var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
2011     }
2012     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
2013
2014     /* */
2015     char *psz_mode = NULL;
2016     if( var_Type( p_vout, "vout-deinterlace" ) != 0 )
2017         psz_mode = var_CreateGetNonEmptyString( p_vout, "vout-deinterlace" );
2018     if( !psz_mode )
2019     {
2020         /* Get the initial value */
2021         if( DeinterlaceIsPresent( p_vout, true ) )
2022             psz_mode = var_CreateGetNonEmptyString( p_vout, "deinterlace-mode" );
2023         else if( DeinterlaceIsPresent( p_vout, false ) )
2024             psz_mode = var_CreateGetNonEmptyString( p_vout, "sout-deinterlace-mode" );
2025     }
2026     var_SetString( p_vout, "deinterlace", psz_mode ?: "" );
2027     free( psz_mode );
2028 }
2029