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  *          Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
  14  *
  15  * This program is free software; you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License as published by
  17  * the Free Software Foundation; either version 2 of the License, or
  18  * (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  28  *****************************************************************************/
  29
  30 /*****************************************************************************
  31  * Preamble
  32  *****************************************************************************/
  33 #ifdef HAVE_CONFIG_H
  34 # include "config.h"
  35 #endif
  36
  37 #include <vlc_common.h>
  38
  39 #include <stdlib.h>                                                /* free() */
  40 #include <string.h>
  41 #include <assert.h>
  42
  43 #include <vlc_vout.h>
  44
  45 #include <vlc_filter.h>
  46 #include <vlc_osd.h>
  47
  48 #include <libvlc.h>
  49 #include <vlc_input.h>
  50 #include "vout_pictures.h"
  51 #include "vout_internal.h"
  52
  53 /*****************************************************************************
  54  * Local prototypes
  55  *****************************************************************************/
  56 static void     *Thread(void *);
  57 static void     vout_Destructor(vlc_object_t *);
  58
  59 /* Object variables callbacks */
  60 static int FilterCallback( vlc_object_t *, char const *,
  61                            vlc_value_t, vlc_value_t, void * );
  62 static int VideoFilter2Callback( vlc_object_t *, char const *,
  63                                  vlc_value_t, vlc_value_t, void * );
  64
  65 /* */
  66 static void PostProcessEnable( vout_thread_t * );
  67 static void PostProcessDisable( vout_thread_t * );
  68 static void PostProcessSetFilterQuality( vout_thread_t *p_vout );
  69 static int  PostProcessCallback( vlc_object_t *, char const *,
  70                                  vlc_value_t, vlc_value_t, void * );
  71 /* */
  72 static void DeinterlaceEnable( vout_thread_t * );
  73 static void DeinterlaceNeeded( vout_thread_t *, bool );
  74
  75 /* Display media title in OSD */
  76 static void DisplayTitleOnOSD( vout_thread_t *p_vout );
  77
  78 /* */
  79 static void PrintVideoFormat(vout_thread_t *, const char *, const video_format_t *);
  80
  81 /* Maximum delay between 2 displayed pictures.
  82  * XXX it is needed for now but should be removed in the long term.
  83  */
  84 #define VOUT_REDISPLAY_DELAY (INT64_C(80000))
  85
  86 /**
  87  * Late pictures having a delay higher than this value are thrashed.
  88  */
  89 #define VOUT_DISPLAY_LATE_THRESHOLD (INT64_C(20000))
  90
  91 /* Better be in advance when awakening than late... */
  92 #define VOUT_MWAIT_TOLERANCE (INT64_C(1000))
  93
  94 /*****************************************************************************
  95  * Video Filter2 functions
  96  *****************************************************************************/
  97 static picture_t *video_new_buffer_filter( filter_t *p_filter )
  98 {
  99     vout_thread_t *p_vout = (vout_thread_t*)p_filter->p_owner;
 100     return picture_pool_Get(p_vout->p->private_pool);
 101 }
 102
 103 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
 104 {
 105     VLC_UNUSED(p_filter);
 106     picture_Release(p_pic);
 107 }
 108
 109 static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
 110 {
 111     p_filter->pf_video_buffer_new = video_new_buffer_filter;
 112     p_filter->pf_video_buffer_del = video_del_buffer_filter;
 113     p_filter->p_owner = p_data; /* p_vout */
 114     return VLC_SUCCESS;
 115 }
 116
 117 #undef vout_Request
 118 /*****************************************************************************
 119  * vout_Request: find a video output thread, create one, or destroy one.
 120  *****************************************************************************
 121  * This function looks for a video output thread matching the current
 122  * properties. If not found, it spawns a new one.
 123  *****************************************************************************/
 124 vout_thread_t *vout_Request( vlc_object_t *p_this, vout_thread_t *p_vout,
 125                              video_format_t *p_fmt )
 126 {
 127     if( !p_fmt )
 128     {
 129         /* Video output is no longer used.
 130          * TODO: support for reusing video outputs with proper _thread-safe_
 131          * reference handling. */
 132         if( p_vout )
 133             vout_CloseAndRelease( p_vout );
 134         return NULL;
 135     }
 136
 137     /* If a video output was provided, lock it, otherwise look for one. */
 138     if( p_vout )
 139     {
 140         vlc_object_hold( p_vout );
 141     }
 142
 143     /* TODO: find a suitable unused video output */
 144
 145     /* If we now have a video output, check it has the right properties */
 146     if( p_vout )
 147     {
 148         vlc_mutex_lock( &p_vout->p->change_lock );
 149
 150         /* We don't directly check for the "vout-filter" variable for obvious
 151          * performance reasons. */
 152         if( p_vout->p->b_filter_change )
 153         {
 154             char *psz_filter_chain = var_GetString( p_vout, "vout-filter" );
 155
 156             if( psz_filter_chain && !*psz_filter_chain )
 157             {
 158                 free( psz_filter_chain );
 159                 psz_filter_chain = NULL;
 160             }
 161             if( p_vout->p->psz_filter_chain && !*p_vout->p->psz_filter_chain )
 162             {
 163                 free( p_vout->p->psz_filter_chain );
 164                 p_vout->p->psz_filter_chain = NULL;
 165             }
 166
 167             if( !psz_filter_chain && !p_vout->p->psz_filter_chain )
 168             {
 169                 p_vout->p->b_filter_change = false;
 170             }
 171
 172             free( psz_filter_chain );
 173         }
 174
 175 #warning "FIXME: Check RGB masks in vout_Request"
 176         /* FIXME: check RGB masks */
 177         if( p_vout->fmt_render.i_chroma != vlc_fourcc_GetCodec( VIDEO_ES, p_fmt->i_chroma ) ||
 178             p_vout->fmt_render.i_width != p_fmt->i_width ||
 179             p_vout->fmt_render.i_height != p_fmt->i_height ||
 180             p_vout->p->b_filter_change )
 181         {
 182             vlc_mutex_unlock( &p_vout->p->change_lock );
 183
 184             /* We are not interested in this format, close this vout */
 185             vout_CloseAndRelease( p_vout );
 186             vlc_object_release( p_vout );
 187             p_vout = NULL;
 188         }
 189         else
 190         {
 191             /* This video output is cool! Hijack it. */
 192             /* Correct aspect ratio on change
 193              * FIXME factorize this code with other aspect ration related code */
 194             unsigned int i_sar_num;
 195             unsigned int i_sar_den;
 196             vlc_ureduce( &i_sar_num, &i_sar_den,
 197                          p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 198 #if 0
 199             /* What's that, it does not seems to be used correcly everywhere */
 200             if( p_vout->i_par_num > 0 && p_vout->i_par_den > 0 )
 201             {
 202                 i_sar_num *= p_vout->i_par_den;
 203                 i_sar_den *= p_vout->i_par_num;
 204             }
 205 #endif
 206
 207             if( i_sar_num > 0 && i_sar_den > 0 &&
 208                 ( i_sar_num != p_vout->fmt_render.i_sar_num ||
 209                   i_sar_den != p_vout->fmt_render.i_sar_den ) )
 210             {
 211                 p_vout->fmt_in.i_sar_num = i_sar_num;
 212                 p_vout->fmt_in.i_sar_den = i_sar_den;
 213
 214                 p_vout->fmt_render.i_sar_num = i_sar_num;
 215                 p_vout->fmt_render.i_sar_den = i_sar_den;
 216                 p_vout->p->i_changes |= VOUT_ASPECT_CHANGE;
 217             }
 218             vlc_mutex_unlock( &p_vout->p->change_lock );
 219
 220             vlc_object_release( p_vout );
 221         }
 222
 223         if( p_vout )
 224         {
 225             msg_Dbg( p_this, "reusing provided vout" );
 226
 227             spu_Attach( p_vout->p->p_spu, VLC_OBJECT(p_vout), false );
 228             vlc_object_detach( p_vout );
 229
 230             vlc_object_attach( p_vout, p_this );
 231             spu_Attach( p_vout->p->p_spu, VLC_OBJECT(p_vout), true );
 232         }
 233     }
 234
 235     if( !p_vout )
 236     {
 237         msg_Dbg( p_this, "no usable vout present, spawning one" );
 238
 239         p_vout = vout_Create( p_this, p_fmt );
 240     }
 241
 242     return p_vout;
 243 }
 244
 245 /*****************************************************************************
 246  * vout_Create: creates a new video output thread
 247  *****************************************************************************
 248  * This function creates a new video output thread, and returns a pointer
 249  * to its description. On error, it returns NULL.
 250  *****************************************************************************/
 251 vout_thread_t * (vout_Create)( vlc_object_t *p_parent, video_format_t *p_fmt )
 252 {
 253     vout_thread_t  *p_vout;                            /* thread descriptor */
 254     vlc_value_t     text;
 255
 256
 257     config_chain_t *p_cfg;
 258     char *psz_parser;
 259     char *psz_name;
 260
 261     if( p_fmt->i_width <= 0 || p_fmt->i_height <= 0 )
 262         return NULL;
 263     const vlc_fourcc_t i_chroma = vlc_fourcc_GetCodec( VIDEO_ES, p_fmt->i_chroma );
 264
 265     vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
 266                  p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 267     if( p_fmt->i_sar_num <= 0 || p_fmt->i_sar_den <= 0 )
 268         return NULL;
 269
 270     /* Allocate descriptor */
 271     static const char typename[] = "video output";
 272     p_vout = vlc_custom_create( p_parent, sizeof( *p_vout ), VLC_OBJECT_VOUT,
 273                                 typename );
 274     if( p_vout == NULL )
 275         return NULL;
 276
 277     /* */
 278     p_vout->p = calloc( 1, sizeof(*p_vout->p) );
 279     if( !p_vout->p )
 280     {
 281         vlc_object_release( p_vout );
 282         return NULL;
 283     }
 284
 285     /* */
 286     p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
 287     p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
 288
 289     p_vout->fmt_render.i_chroma =
 290     p_vout->fmt_in.i_chroma     = i_chroma;
 291     video_format_FixRgb( &p_vout->fmt_render );
 292     video_format_FixRgb( &p_vout->fmt_in );
 293
 294     /* Initialize misc stuff */
 295     p_vout->p->i_changes    = 0;
 296     p_vout->p->b_fullscreen = 0;
 297     vout_chrono_Init( &p_vout->p->render, 5, 10000 ); /* Arbitrary initial time */
 298     vout_statistic_Init( &p_vout->p->statistic );
 299     p_vout->p->b_filter_change = 0;
 300     p_vout->p->i_par_num =
 301     p_vout->p->i_par_den = 1;
 302     p_vout->p->b_picture_empty = false;
 303     p_vout->p->displayed.date = VLC_TS_INVALID;
 304     p_vout->p->displayed.decoded = NULL;
 305     p_vout->p->displayed.timestamp = VLC_TS_INVALID;
 306     p_vout->p->displayed.qtype = QTYPE_NONE;
 307     p_vout->p->displayed.is_interlaced = false;
 308
 309     p_vout->p->step.is_requested = false;
 310     p_vout->p->step.last         = VLC_TS_INVALID;
 311     p_vout->p->step.timestamp    = VLC_TS_INVALID;
 312
 313     p_vout->p->pause.is_on  = false;
 314     p_vout->p->pause.date   = VLC_TS_INVALID;
 315
 316     p_vout->p->decoder_fifo = picture_fifo_New();
 317     p_vout->p->decoder_pool = NULL;
 318
 319     vlc_mouse_Init( &p_vout->p->mouse );
 320
 321     vout_snapshot_Init( &p_vout->p->snapshot );
 322
 323     /* Initialize locks */
 324     vlc_mutex_init( &p_vout->p->picture_lock );
 325     vlc_cond_init( &p_vout->p->picture_wait );
 326     vlc_mutex_init( &p_vout->p->change_lock );
 327     vlc_mutex_init( &p_vout->p->vfilter_lock );
 328
 329     /* Mouse coordinates */
 330     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 331     var_Create( p_vout, "mouse-moved", VLC_VAR_COORDS );
 332     var_Create( p_vout, "mouse-clicked", VLC_VAR_COORDS );
 333     /* Mouse object (area of interest in a video filter) */
 334     var_Create( p_vout, "mouse-object", VLC_VAR_BOOL );
 335
 336     /* Attach the new object now so we can use var inheritance below */
 337     vlc_object_attach( p_vout, p_parent );
 338
 339     /* Initialize subpicture unit */
 340     p_vout->p->p_spu = spu_Create( p_vout );
 341
 342     /* */
 343     spu_Init( p_vout->p->p_spu );
 344
 345     spu_Attach( p_vout->p->p_spu, VLC_OBJECT(p_vout), true );
 346
 347     p_vout->p->is_late_dropped = var_InheritBool( p_vout, "drop-late-frames" );
 348
 349     /* Take care of some "interface/control" related initialisations */
 350     vout_IntfInit( p_vout );
 351
 352     /* If the parent is not a VOUT object, that means we are at the start of
 353      * the video output pipe */
 354     if( vlc_internals( p_parent )->i_object_type != VLC_OBJECT_VOUT )
 355     {
 356         /* Look for the default filter configuration */
 357         p_vout->p->psz_filter_chain =
 358             var_CreateGetStringCommand( p_vout, "vout-filter" );
 359
 360         /* Apply video filter2 objects on the first vout */
 361         p_vout->p->psz_vf2 =
 362             var_CreateGetStringCommand( p_vout, "video-filter" );
 363
 364         p_vout->p->b_first_vout = true;
 365     }
 366     else
 367     {
 368         /* continue the parent's filter chain */
 369         char *psz_tmp;
 370
 371         /* Ugly hack to jump to our configuration chain */
 372         p_vout->p->psz_filter_chain
 373             = ((vout_thread_t *)p_parent)->p->psz_filter_chain;
 374         p_vout->p->psz_filter_chain
 375             = config_ChainCreate( &psz_tmp, &p_cfg, p_vout->p->psz_filter_chain );
 376         config_ChainDestroy( p_cfg );
 377         free( psz_tmp );
 378
 379         /* Create a video filter2 var ... but don't inherit values */
 380         var_Create( p_vout, "video-filter",
 381                     VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 382         p_vout->p->psz_vf2 = var_GetString( p_vout, "video-filter" );
 383
 384         /* */
 385         p_vout->p->b_first_vout = false;
 386     }
 387
 388     var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
 389     p_vout->p->p_vf2_chain = filter_chain_New( p_vout, "video filter2",
 390         false, video_filter_buffer_allocation_init, NULL, p_vout );
 391
 392     /* Choose the video output module */
 393     if( !p_vout->p->psz_filter_chain || !*p_vout->p->psz_filter_chain )
 394     {
 395         psz_parser = NULL;
 396     }
 397     else
 398     {
 399         psz_parser = strdup( p_vout->p->psz_filter_chain );
 400         p_vout->p->title.show = false;
 401     }
 402
 403     /* Create the vout thread */
 404     char *psz_tmp = config_ChainCreate( &psz_name, &p_cfg, psz_parser );
 405     free( psz_parser );
 406     free( psz_tmp );
 407     p_vout->p->p_cfg = p_cfg;
 408
 409     /* Create a few object variables for interface interaction */
 410     var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 411     text.psz_string = _("Filters");
 412     var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
 413     var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
 414
 415     /* */
 416     DeinterlaceEnable( p_vout );
 417
 418     if( p_vout->p->psz_filter_chain && *p_vout->p->psz_filter_chain )
 419     {
 420         char *psz_tmp;
 421         if( asprintf( &psz_tmp, "%s,none", psz_name ) < 0 )
 422             psz_tmp = strdup( "" );
 423         free( psz_name );
 424         psz_name = psz_tmp;
 425     }
 426     p_vout->p->psz_module_name = psz_name;
 427
 428     /* */
 429     vlc_object_set_destructor( p_vout, vout_Destructor );
 430
 431     /* */
 432     vlc_cond_init( &p_vout->p->change_wait );
 433     if( vlc_clone( &p_vout->p->thread, Thread, p_vout,
 434                    VLC_THREAD_PRIORITY_OUTPUT ) )
 435     {
 436         spu_Attach( p_vout->p->p_spu, VLC_OBJECT(p_vout), false );
 437         spu_Destroy( p_vout->p->p_spu );
 438         p_vout->p->p_spu = NULL;
 439         vlc_object_release( p_vout );
 440         return NULL;
 441     }
 442
 443     vlc_mutex_lock( &p_vout->p->change_lock );
 444     while( !p_vout->p->b_ready )
 445     {   /* We are (ab)using the same condition in opposite directions for
 446          * b_ready and b_done. This works because of the strict ordering. */
 447         assert( !p_vout->p->b_done );
 448         vlc_cond_wait( &p_vout->p->change_wait, &p_vout->p->change_lock );
 449     }
 450     vlc_mutex_unlock( &p_vout->p->change_lock );
 451
 452     if( p_vout->p->b_error )
 453     {
 454         msg_Err( p_vout, "video output creation failed" );
 455         vout_CloseAndRelease( p_vout );
 456         return NULL;
 457     }
 458
 459     return p_vout;
 460 }
 461
 462 /*****************************************************************************
 463  * vout_Close: Close a vout created by vout_Create.
 464  *****************************************************************************
 465  * You HAVE to call it on vout created by vout_Create before vlc_object_release.
 466  * You should NEVER call it on vout not obtained through vout_Create
 467  * (like with vout_Request or vlc_object_find.)
 468  * You can use vout_CloseAndRelease() as a convenience method.
 469  *****************************************************************************/
 470 void vout_Close( vout_thread_t *p_vout )
 471 {
 472     assert( p_vout );
 473
 474     vlc_mutex_lock( &p_vout->p->change_lock );
 475     p_vout->p->b_done = true;
 476     vlc_cond_signal( &p_vout->p->change_wait );
 477     vlc_mutex_unlock( &p_vout->p->change_lock );
 478
 479     vout_snapshot_End( &p_vout->p->snapshot );
 480
 481     vlc_join( p_vout->p->thread, NULL );
 482 }
 483
 484 /* */
 485 static void vout_Destructor( vlc_object_t * p_this )
 486 {
 487     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 488
 489     /* Make sure the vout was stopped first */
 490     //assert( !p_vout->p_module );
 491
 492     free( p_vout->p->psz_module_name );
 493
 494     /* */
 495     if( p_vout->p->p_spu )
 496         spu_Destroy( p_vout->p->p_spu );
 497
 498     vout_chrono_Clean( &p_vout->p->render );
 499
 500     if( p_vout->p->decoder_fifo )
 501         picture_fifo_Delete( p_vout->p->decoder_fifo );
 502     assert( !p_vout->p->decoder_pool );
 503
 504     /* Destroy the locks */
 505     vlc_cond_destroy( &p_vout->p->change_wait );
 506     vlc_cond_destroy( &p_vout->p->picture_wait );
 507     vlc_mutex_destroy( &p_vout->p->picture_lock );
 508     vlc_mutex_destroy( &p_vout->p->change_lock );
 509     vlc_mutex_destroy( &p_vout->p->vfilter_lock );
 510
 511     /* */
 512     vout_statistic_Clean( &p_vout->p->statistic );
 513
 514     /* */
 515     vout_snapshot_Clean( &p_vout->p->snapshot );
 516
 517     /* */
 518     free( p_vout->p->psz_filter_chain );
 519     free( p_vout->p->title.value );
 520
 521     config_ChainDestroy( p_vout->p->p_cfg );
 522
 523     free( p_vout->p );
 524
 525 }
 526
 527 /* */
 528 void vout_ChangePause( vout_thread_t *p_vout, bool b_paused, mtime_t i_date )
 529 {
 530     vlc_mutex_lock( &p_vout->p->change_lock );
 531
 532     assert( !p_vout->p->pause.is_on || !b_paused );
 533
 534     vlc_mutex_lock( &p_vout->p->picture_lock );
 535
 536     if( p_vout->p->pause.is_on )
 537     {
 538         const mtime_t i_duration = i_date - p_vout->p->pause.date;
 539
 540         if (p_vout->p->step.timestamp > VLC_TS_INVALID)
 541             p_vout->p->step.timestamp += i_duration;
 542         if (!b_paused)
 543             p_vout->p->step.last = p_vout->p->step.timestamp;
 544         picture_fifo_OffsetDate( p_vout->p->decoder_fifo, i_duration );
 545         if (p_vout->p->displayed.decoded)
 546             p_vout->p->displayed.decoded->date += i_duration;
 547
 548         vlc_cond_signal( &p_vout->p->picture_wait );
 549         vlc_mutex_unlock( &p_vout->p->picture_lock );
 550
 551         spu_OffsetSubtitleDate( p_vout->p->p_spu, i_duration );
 552     }
 553     else
 554     {
 555         if (b_paused)
 556             p_vout->p->step.last = p_vout->p->step.timestamp;
 557         vlc_mutex_unlock( &p_vout->p->picture_lock );
 558     }
 559     p_vout->p->pause.is_on = b_paused;
 560     p_vout->p->pause.date  = i_date;
 561
 562     vlc_mutex_unlock( &p_vout->p->change_lock );
 563 }
 564
 565 void vout_GetResetStatistic( vout_thread_t *p_vout, int *pi_displayed, int *pi_lost )
 566 {
 567     vout_statistic_GetReset( &p_vout->p->statistic,
 568                              pi_displayed, pi_lost );
 569 }
 570
 571 static void Flush(vout_thread_t *vout, mtime_t date, bool reset, bool below)
 572 {
 573     vlc_assert_locked(&vout->p->picture_lock);
 574     vout->p->step.timestamp = VLC_TS_INVALID;
 575     vout->p->step.last      = VLC_TS_INVALID;
 576
 577     picture_t *last = vout->p->displayed.decoded;
 578     if (last) {
 579         if (reset) {
 580             picture_Release(last);
 581             vout->p->displayed.decoded = NULL;
 582         } else if (( below  && last->date <= date) ||
 583                    (!below && last->date >= date)) {
 584             vout->p->step.is_requested = true;
 585         }
 586     }
 587     picture_fifo_Flush( vout->p->decoder_fifo, date, below );
 588 }
 589
 590 void vout_Flush(vout_thread_t *vout, mtime_t date)
 591 {
 592     vlc_mutex_lock(&vout->p->picture_lock);
 593
 594     Flush(vout, date, false, false);
 595
 596     vlc_cond_signal(&vout->p->picture_wait);
 597     vlc_mutex_unlock(&vout->p->picture_lock);
 598 }
 599
 600 void vout_Reset(vout_thread_t *vout)
 601 {
 602     vlc_mutex_lock(&vout->p->picture_lock);
 603
 604     Flush(vout, INT64_MAX, true, true);
 605     if (vout->p->decoder_pool)
 606         picture_pool_NonEmpty(vout->p->decoder_pool, true);
 607     vout->p->pause.is_on = false;
 608     vout->p->pause.date  = mdate();
 609
 610     vlc_cond_signal( &vout->p->picture_wait );
 611     vlc_mutex_unlock(&vout->p->picture_lock);
 612 }
 613
 614 void vout_FixLeaks( vout_thread_t *vout )
 615 {
 616     vlc_mutex_lock(&vout->p->picture_lock);
 617
 618     picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
 619     if (!picture) {
 620         picture = picture_pool_Get(vout->p->decoder_pool);
 621     }
 622
 623     if (picture) {
 624         picture_Release(picture);
 625         /* Not all pictures has been displayed yet or some are
 626          * free */
 627         vlc_mutex_unlock(&vout->p->picture_lock);
 628         return;
 629     }
 630
 631     /* There is no reason that no pictures are available, force one
 632      * from the pool, becarefull with it though */
 633     msg_Err(vout, "pictures leaked, trying to workaround");
 634
 635     /* */
 636     picture_pool_NonEmpty(vout->p->decoder_pool, false);
 637
 638     vlc_cond_signal(&vout->p->picture_wait);
 639     vlc_mutex_unlock(&vout->p->picture_lock);
 640 }
 641 void vout_NextPicture(vout_thread_t *vout, mtime_t *duration)
 642 {
 643     vlc_mutex_lock(&vout->p->picture_lock);
 644
 645     vout->p->b_picture_empty = false;
 646     vout->p->step.is_requested = true;
 647
 648     /* FIXME I highly doubt that it can works with only one cond_t FIXME */
 649     vlc_cond_signal(&vout->p->picture_wait);
 650
 651     while (vout->p->step.is_requested && !vout->p->b_picture_empty)
 652         vlc_cond_wait(&vout->p->picture_wait, &vout->p->picture_lock);
 653
 654     if (vout->p->step.last > VLC_TS_INVALID &&
 655         vout->p->step.timestamp > vout->p->step.last) {
 656         *duration = vout->p->step.timestamp - vout->p->step.last;
 657         vout->p->step.last = vout->p->step.timestamp;
 658     } else {
 659         *duration = 0;
 660     }
 661
 662     /* TODO advance subpicture by the duration ... */
 663     vlc_mutex_unlock(&vout->p->picture_lock);
 664 }
 665
 666 void vout_DisplayTitle( vout_thread_t *p_vout, const char *psz_title )
 667 {
 668     assert( psz_title );
 669
 670     if( !var_InheritBool( p_vout, "osd" ) )
 671         return;
 672
 673     vlc_mutex_lock( &p_vout->p->change_lock );
 674     free( p_vout->p->title.value );
 675     p_vout->p->title.value = strdup( psz_title );
 676     vlc_mutex_unlock( &p_vout->p->change_lock );
 677 }
 678
 679 spu_t *vout_GetSpu( vout_thread_t *p_vout )
 680 {
 681     return p_vout->p->p_spu;
 682 }
 683
 684 /*****************************************************************************
 685  * InitThread: initialize video output thread
 686  *****************************************************************************
 687  * This function is called from Thread and performs the second step of the
 688  * initialization. It returns 0 on success. Note that the thread's flag are not
 689  * modified inside this function.
 690  * XXX You have to enter it with change_lock taken.
 691  *****************************************************************************/
 692 static int ThreadInit(vout_thread_t *vout)
 693 {
 694     /* Initialize output method, it allocates direct buffers for us */
 695     if (vout_InitWrapper(vout))
 696         return VLC_EGENERIC;
 697     assert(vout->p->decoder_pool);
 698
 699     vout->p->displayed.decoded = NULL;
 700
 701     /* print some usefull debug info about different vout formats
 702      */
 703     PrintVideoFormat(vout, "pic render", &vout->fmt_render);
 704     PrintVideoFormat(vout, "pic in",     &vout->fmt_in);
 705     PrintVideoFormat(vout, "pic out",    &vout->fmt_out);
 706
 707     assert(vout->fmt_out.i_width  == vout->fmt_render.i_width &&
 708            vout->fmt_out.i_height == vout->fmt_render.i_height &&
 709            vout->fmt_out.i_chroma == vout->fmt_render.i_chroma);
 710     return VLC_SUCCESS;
 711 }
 712
 713 /*****************************************************************************
 714  * CleanThread: clean up after InitThread
 715  *****************************************************************************
 716  * This function is called after a sucessful
 717  * initialization. It frees all resources allocated by InitThread.
 718  * XXX You have to enter it with change_lock taken.
 719  *****************************************************************************/
 720 static void ThreadClean(vout_thread_t *vout)
 721 {
 722     /* Destroy translation tables */
 723     if (!vout->p->b_error) {
 724         picture_fifo_Flush(vout->p->decoder_fifo, INT64_MAX, false);
 725         vout_EndWrapper(vout);
 726     }
 727 }
 728
 729 static int ThreadDisplayPicture(vout_thread_t *vout,
 730                                 bool now, mtime_t *deadline)
 731 {
 732     int displayed_count = 0;
 733     int lost_count = 0;
 734
 735     for (;;) {
 736         const mtime_t date = mdate();
 737         const bool is_paused = vout->p->pause.is_on;
 738         bool redisplay = is_paused && !now;
 739         bool is_forced;
 740
 741         /* FIXME/XXX we must redisplay the last decoded picture (because
 742          * of potential vout updated, or filters update or SPU update)
 743          * For now a high update period is needed but it coulmd be removed
 744          * if and only if:
 745          * - vout module emits events from theselves.
 746          * - *and* SPU is modified to emit an event or a deadline when needed.
 747          *
 748          * So it will be done latter.
 749          */
 750         if (!redisplay) {
 751             picture_t *peek = picture_fifo_Peek(vout->p->decoder_fifo);
 752             if (peek) {
 753                 is_forced = peek->b_force || is_paused || now;
 754                 *deadline = (is_forced ? date : peek->date) - vout_chrono_GetHigh(&vout->p->render);
 755                 picture_Release(peek);
 756             } else {
 757                 redisplay = true;
 758             }
 759         }
 760         if (redisplay) {
 761              /* FIXME a better way for this delay is needed */
 762             const mtime_t date_update = vout->p->displayed.date + VOUT_REDISPLAY_DELAY;
 763             if (date_update > date || !vout->p->displayed.decoded) {
 764                 *deadline = vout->p->displayed.decoded ? date_update : VLC_TS_INVALID;
 765                 break;
 766             }
 767             /* */
 768             is_forced = true;
 769             *deadline = date - vout_chrono_GetHigh(&vout->p->render);
 770         }
 771         if (*deadline > VOUT_MWAIT_TOLERANCE)
 772             *deadline -= VOUT_MWAIT_TOLERANCE;
 773
 774         /* If we are too early and can wait, do it */
 775         if (date < *deadline && !now)
 776             break;
 777
 778         picture_t *decoded;
 779         if (redisplay) {
 780             decoded = vout->p->displayed.decoded;
 781             vout->p->displayed.decoded = NULL;
 782         } else {
 783             decoded = picture_fifo_Pop(vout->p->decoder_fifo);
 784             assert(decoded);
 785             if (!is_forced && !vout->p->is_late_dropped) {
 786                 const mtime_t predicted = date + vout_chrono_GetLow(&vout->p->render);
 787                 const mtime_t late = predicted - decoded->date;
 788                 if (late > 0) {
 789                     msg_Dbg(vout, "picture might be displayed late (missing %d ms)", (int)(late/1000));
 790                     if (late > VOUT_DISPLAY_LATE_THRESHOLD) {
 791                         msg_Warn(vout, "rejected picture because of render time");
 792                         /* TODO */
 793                         picture_Release(decoded);
 794                         lost_count++;
 795                         break;
 796                     }
 797                 }
 798             }
 799
 800             vout->p->displayed.is_interlaced = !decoded->b_progressive;
 801             vout->p->displayed.qtype         = decoded->i_qtype;
 802         }
 803         vout->p->displayed.timestamp = decoded->date;
 804
 805         /* */
 806         if (vout->p->displayed.decoded)
 807             picture_Release(vout->p->displayed.decoded);
 808         picture_Hold(decoded);
 809         vout->p->displayed.decoded = decoded;
 810
 811         /* */
 812         vout_chrono_Start(&vout->p->render);
 813
 814         picture_t *filtered = NULL;
 815         if (decoded) {
 816             vlc_mutex_lock(&vout->p->vfilter_lock);
 817             filtered = filter_chain_VideoFilter(vout->p->p_vf2_chain, decoded);
 818             //assert(filtered == decoded); // TODO implement
 819             vlc_mutex_unlock(&vout->p->vfilter_lock);
 820             if (!filtered)
 821                 continue;
 822         }
 823
 824         /*
 825          * Check for subpictures to display
 826          */
 827         const bool do_snapshot = vout_snapshot_IsRequested(&vout->p->snapshot);
 828         mtime_t spu_render_time = is_forced ? mdate() : filtered->date;
 829         if (vout->p->pause.is_on)
 830             spu_render_time = vout->p->pause.date;
 831         else
 832             spu_render_time = filtered->date > 1 ? filtered->date : mdate();
 833
 834         subpicture_t *subpic = spu_SortSubpictures(vout->p->p_spu,
 835                                                    spu_render_time,
 836                                                    do_snapshot);
 837         /*
 838          * Perform rendering
 839          *
 840          * We have to:
 841          * - be sure to end up with a direct buffer.
 842          * - blend subtitles, and in a fast access buffer
 843          */
 844         picture_t *direct = NULL;
 845         if (filtered &&
 846             (vout->p->decoder_pool != vout->p->display_pool || subpic)) {
 847             picture_t *render;
 848             if (vout->p->is_decoder_pool_slow)
 849                 render = picture_NewFromFormat(&vout->fmt_out);
 850             else if (vout->p->decoder_pool != vout->p->display_pool)
 851                 render = picture_pool_Get(vout->p->display_pool);
 852             else
 853                 render = picture_pool_Get(vout->p->private_pool);
 854
 855             if (render) {
 856                 picture_Copy(render, filtered);
 857
 858                 spu_RenderSubpictures(vout->p->p_spu,
 859                                       render, &vout->fmt_out,
 860                                       subpic, &vout->fmt_in, spu_render_time);
 861             }
 862             if (vout->p->is_decoder_pool_slow) {
 863                 direct = picture_pool_Get(vout->p->display_pool);
 864                 if (direct)
 865                     picture_Copy(direct, render);
 866                 picture_Release(render);
 867
 868             } else {
 869                 direct = render;
 870             }
 871             picture_Release(filtered);
 872             filtered = NULL;
 873         } else {
 874             direct = filtered;
 875         }
 876
 877         /*
 878          * Take a snapshot if requested
 879          */
 880         if (direct && do_snapshot)
 881             vout_snapshot_Set(&vout->p->snapshot, &vout->fmt_out, direct);
 882
 883         /* Render the direct buffer returned by vout_RenderPicture */
 884         if (direct) {
 885             vout_RenderWrapper(vout, direct);
 886
 887             vout_chrono_Stop(&vout->p->render);
 888 #if 0
 889             {
 890             static int i = 0;
 891             if (((i++)%10) == 0)
 892                 msg_Info(vout, "render: avg %d ms var %d ms",
 893                          (int)(vout->p->render.avg/1000), (int)(vout->p->render.var/1000));
 894             }
 895 #endif
 896         }
 897
 898         /* Wait the real date (for rendering jitter) */
 899         if (!is_forced)
 900             mwait(decoded->date);
 901
 902         /* Display the direct buffer returned by vout_RenderPicture */
 903         vout->p->displayed.date = mdate();
 904         if (direct)
 905             vout_DisplayWrapper(vout, direct);
 906
 907         displayed_count++;
 908         break;
 909     }
 910
 911     vout_statistic_Update(&vout->p->statistic, displayed_count, lost_count);
 912     if (displayed_count <= 0)
 913         return VLC_EGENERIC;
 914     return VLC_SUCCESS;
 915 }
 916
 917 /*****************************************************************************
 918  * Thread: video output thread
 919  *****************************************************************************
 920  * Video output thread. This function does only returns when the thread is
 921  * terminated. It handles the pictures arriving in the video heap and the
 922  * display device events.
 923  *****************************************************************************/
 924 static void *Thread(void *object)
 925 {
 926     vout_thread_t *vout = object;
 927     bool          has_wrapper;
 928
 929     /*
 930      * Initialize thread
 931      */
 932     has_wrapper = !vout_OpenWrapper(vout, vout->p->psz_module_name);
 933
 934     vlc_mutex_lock(&vout->p->change_lock);
 935
 936     if (has_wrapper)
 937         vout->p->b_error = ThreadInit(vout);
 938     else
 939         vout->p->b_error = true;
 940
 941     /* signal the creation of the vout */
 942     vout->p->b_ready = true;
 943     vlc_cond_signal(&vout->p->change_wait);
 944
 945     if (vout->p->b_error)
 946         goto exit_thread;
 947
 948     /* */
 949     bool    last_picture_interlaced      = false;
 950     int     last_picture_qtype           = QTYPE_NONE;
 951     mtime_t last_picture_interlaced_date = mdate();
 952
 953     /*
 954      * Main loop - it is not executed if an error occurred during
 955      * initialization
 956      */
 957     while (!vout->p->b_done && !vout->p->b_error) {
 958         /* */
 959         if(vout->p->title.show && vout->p->title.value)
 960             DisplayTitleOnOSD(vout);
 961
 962         vlc_mutex_lock(&vout->p->picture_lock);
 963
 964         mtime_t deadline = VLC_TS_INVALID;
 965         bool has_displayed = !ThreadDisplayPicture(vout, vout->p->step.is_requested, &deadline);
 966
 967         if (has_displayed) {
 968             vout->p->step.timestamp = vout->p->displayed.timestamp;
 969             if (vout->p->step.last <= VLC_TS_INVALID)
 970                 vout->p->step.last = vout->p->step.timestamp;
 971         }
 972         if (vout->p->step.is_requested) {
 973             if (!has_displayed && !vout->p->b_picture_empty) {
 974                 picture_t *peek = picture_fifo_Peek(vout->p->decoder_fifo);
 975                 if (peek)
 976                     picture_Release(peek);
 977                 if (!peek) {
 978                     vout->p->b_picture_empty = true;
 979                     vlc_cond_signal(&vout->p->picture_wait);
 980                 }
 981             }
 982             if (has_displayed) {
 983                 vout->p->step.is_requested = false;
 984                 vlc_cond_signal(&vout->p->picture_wait);
 985             }
 986         }
 987
 988         const int  picture_qtype      = vout->p->displayed.qtype;
 989         const bool picture_interlaced = vout->p->displayed.is_interlaced;
 990
 991         vlc_mutex_unlock(&vout->p->picture_lock);
 992
 993         if (vout_ManageWrapper(vout)) {
 994             /* A fatal error occurred, and the thread must terminate
 995              * immediately, without displaying anything - setting b_error to 1
 996              * causes the immediate end of the main while() loop. */
 997             // FIXME pf_end
 998             vout->p->b_error = true;
 999             break;
1000         }
1001
1002         /* Post processing */
1003         const int postproc_change = (picture_qtype != QTYPE_NONE) - (last_picture_qtype != QTYPE_NONE);
1004         if (postproc_change == 1)
1005             PostProcessEnable(vout);
1006         else if (postproc_change == -1)
1007             PostProcessDisable(vout);
1008         if (postproc_change)
1009             last_picture_qtype = picture_qtype;
1010
1011         /* Deinterlacing
1012          * Wait 30s before quiting interlacing mode */
1013         const int interlacing_change = (!!picture_interlaced) - (!!last_picture_interlaced);
1014         if ((interlacing_change == 1) ||
1015             (interlacing_change == -1 && last_picture_interlaced_date + 30000000 < mdate())) {
1016             DeinterlaceNeeded(vout, picture_interlaced);
1017             last_picture_interlaced = picture_interlaced;
1018         }
1019         if (picture_interlaced)
1020             last_picture_interlaced_date = mdate();
1021
1022         /* Check for "video filter2" changes */
1023         vlc_mutex_lock(&vout->p->vfilter_lock);
1024         if (vout->p->psz_vf2) {
1025             es_format_t fmt;
1026
1027             es_format_Init(&fmt, VIDEO_ES, vout->fmt_render.i_chroma);
1028             fmt.video = vout->fmt_render;
1029             filter_chain_Reset(vout->p->p_vf2_chain, &fmt, &fmt);
1030
1031             if (filter_chain_AppendFromString(vout->p->p_vf2_chain,
1032                                               vout->p->psz_vf2) < 0)
1033                 msg_Err(vout, "Video filter chain creation failed");
1034
1035             free(vout->p->psz_vf2);
1036             vout->p->psz_vf2 = NULL;
1037
1038             if (last_picture_qtype != QTYPE_NONE)
1039                 PostProcessSetFilterQuality(vout);
1040         }
1041         vlc_mutex_unlock(&vout->p->vfilter_lock);
1042
1043         vlc_mutex_unlock(&vout->p->change_lock);
1044
1045         if (deadline > VLC_TS_INVALID) {
1046             vlc_mutex_lock(&vout->p->picture_lock);
1047             vlc_cond_timedwait(&vout->p->picture_wait, &vout->p->picture_lock, deadline);
1048             vlc_mutex_unlock(&vout->p->picture_lock);
1049         }
1050
1051         vlc_mutex_lock(&vout->p->change_lock);
1052     }
1053
1054     /*
1055      * Error loop - wait until the thread destruction is requested
1056      *
1057      * XXX I wonder if we should periodically clean the decoder_fifo
1058      * or have a way to prevent it filling up.
1059      */
1060     while (vout->p->b_error && !vout->p->b_done)
1061         vlc_cond_wait(&vout->p->change_wait, &vout->p->change_lock);
1062
1063     /* Clean thread */
1064     ThreadClean(vout);
1065
1066 exit_thread:
1067     /* Detach subpicture unit from both input and vout */
1068     spu_Attach(vout->p->p_spu, VLC_OBJECT(vout), false);
1069     vlc_object_detach(vout->p->p_spu);
1070
1071     /* Destroy the video filters2 */
1072     filter_chain_Delete(vout->p->p_vf2_chain);
1073
1074     vlc_mutex_unlock(&vout->p->change_lock);
1075
1076     if (has_wrapper)
1077         vout_CloseWrapper(vout);
1078
1079     return NULL;
1080 }
1081
1082 /*****************************************************************************
1083  * object variables callbacks: a bunch of object variables are used by the
1084  * interfaces to interact with the vout.
1085  *****************************************************************************/
1086 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1087                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1088 {
1089     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1090     input_thread_t *p_input;
1091     (void)psz_cmd; (void)oldval; (void)p_data;
1092
1093     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1094                                                  FIND_PARENT );
1095     if (!p_input)
1096     {
1097         msg_Err( p_vout, "Input not found" );
1098         return VLC_EGENERIC;
1099     }
1100
1101     var_SetBool( p_vout, "intf-change", true );
1102
1103     /* Modify input as well because the vout might have to be restarted */
1104     var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1105     var_SetString( p_input, "vout-filter", newval.psz_string );
1106
1107     /* Now restart current video stream */
1108     input_Control( p_input, INPUT_RESTART_ES, -VIDEO_ES );
1109     vlc_object_release( p_input );
1110
1111     return VLC_SUCCESS;
1112 }
1113
1114 /*****************************************************************************
1115  * Video Filter2 stuff
1116  *****************************************************************************/
1117 static int VideoFilter2Callback( vlc_object_t *p_this, char const *psz_cmd,
1118                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1119 {
1120     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1121     (void)psz_cmd; (void)oldval; (void)p_data;
1122
1123     vlc_mutex_lock( &p_vout->p->vfilter_lock );
1124     p_vout->p->psz_vf2 = strdup( newval.psz_string );
1125     vlc_mutex_unlock( &p_vout->p->vfilter_lock );
1126
1127     return VLC_SUCCESS;
1128 }
1129
1130 /*****************************************************************************
1131  * Post-processing
1132  *****************************************************************************/
1133 static bool PostProcessIsPresent( const char *psz_filter )
1134 {
1135     const char  *psz_pp = "postproc";
1136     const size_t i_pp = strlen(psz_pp);
1137     return psz_filter &&
1138            !strncmp( psz_filter, psz_pp, strlen(psz_pp) ) &&
1139            ( psz_filter[i_pp] == '\0' || psz_filter[i_pp] == ':' );
1140 }
1141
1142 static int PostProcessCallback( vlc_object_t *p_this, char const *psz_cmd,
1143                                 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1144 {
1145     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1146     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_data);
1147
1148     static const char *psz_pp = "postproc";
1149
1150     char *psz_vf2 = var_GetString( p_vout, "video-filter" );
1151
1152     if( newval.i_int <= 0 )
1153     {
1154         if( PostProcessIsPresent( psz_vf2 ) )
1155         {
1156             strcpy( psz_vf2, &psz_vf2[strlen(psz_pp)] );
1157             if( *psz_vf2 == ':' )
1158                 strcpy( psz_vf2, &psz_vf2[1] );
1159         }
1160     }
1161     else
1162     {
1163         if( !PostProcessIsPresent( psz_vf2 ) )
1164         {
1165             if( psz_vf2 )
1166             {
1167                 char *psz_tmp = psz_vf2;
1168                 if( asprintf( &psz_vf2, "%s:%s", psz_pp, psz_tmp ) < 0 )
1169                     psz_vf2 = psz_tmp;
1170                 else
1171                     free( psz_tmp );
1172             }
1173             else
1174             {
1175                 psz_vf2 = strdup( psz_pp );
1176             }
1177         }
1178     }
1179     if( psz_vf2 )
1180     {
1181         var_SetString( p_vout, "video-filter", psz_vf2 );
1182         free( psz_vf2 );
1183     }
1184
1185     return VLC_SUCCESS;
1186 }
1187 static void PostProcessEnable( vout_thread_t *p_vout )
1188 {
1189     vlc_value_t text;
1190     msg_Dbg( p_vout, "Post-processing available" );
1191     var_Create( p_vout, "postprocess", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
1192     text.psz_string = _("Post processing");
1193     var_Change( p_vout, "postprocess", VLC_VAR_SETTEXT, &text, NULL );
1194
1195     for( int i = 0; i <= 6; i++ )
1196     {
1197         vlc_value_t val;
1198         vlc_value_t text;
1199         char psz_text[1+1];
1200
1201         val.i_int = i;
1202         snprintf( psz_text, sizeof(psz_text), "%d", i );
1203         if( i == 0 )
1204             text.psz_string = _("Disable");
1205         else
1206             text.psz_string = psz_text;
1207         var_Change( p_vout, "postprocess", VLC_VAR_ADDCHOICE, &val, &text );
1208     }
1209     var_AddCallback( p_vout, "postprocess", PostProcessCallback, NULL );
1210
1211     /* */
1212     char *psz_filter = var_GetNonEmptyString( p_vout, "video-filter" );
1213     int i_postproc_q = 0;
1214     if( PostProcessIsPresent( psz_filter ) )
1215         i_postproc_q = var_CreateGetInteger( p_vout, "postproc-q" );
1216
1217     var_SetInteger( p_vout, "postprocess", i_postproc_q );
1218
1219     free( psz_filter );
1220 }
1221 static void PostProcessDisable( vout_thread_t *p_vout )
1222 {
1223     msg_Dbg( p_vout, "Post-processing no more available" );
1224     var_Destroy( p_vout, "postprocess" );
1225 }
1226 static void PostProcessSetFilterQuality( vout_thread_t *p_vout )
1227 {
1228     vlc_object_t *p_pp = vlc_object_find_name( p_vout, "postproc", FIND_CHILD );
1229     if( !p_pp )
1230         return;
1231
1232     var_SetInteger( p_pp, "postproc-q", var_GetInteger( p_vout, "postprocess" ) );
1233     vlc_object_release( p_pp );
1234 }
1235
1236
1237 static void DisplayTitleOnOSD( vout_thread_t *p_vout )
1238 {
1239     const mtime_t i_start = mdate();
1240     const mtime_t i_stop = i_start + INT64_C(1000) * p_vout->p->title.timeout;
1241
1242     if( i_stop <= i_start )
1243         return;
1244
1245     vlc_assert_locked( &p_vout->p->change_lock );
1246
1247     vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1248                            p_vout->p->title.value, NULL,
1249                            p_vout->p->title.position,
1250                            30 + p_vout->fmt_in.i_width
1251                               - p_vout->fmt_in.i_visible_width
1252                               - p_vout->fmt_in.i_x_offset,
1253                            20 + p_vout->fmt_in.i_y_offset,
1254                            i_start, i_stop );
1255
1256     free( p_vout->p->title.value );
1257
1258     p_vout->p->title.value = NULL;
1259 }
1260
1261 /*****************************************************************************
1262  * Deinterlacing
1263  *****************************************************************************/
1264 typedef struct
1265 {
1266     const char *psz_mode;
1267     bool       b_vout_filter;
1268 } deinterlace_mode_t;
1269
1270 /* XXX
1271  * You can use the non vout filter if and only if the video properties stay the
1272  * same (width/height/chroma/fps), at least for now.
1273  */
1274 static const deinterlace_mode_t p_deinterlace_mode[] = {
1275     { "",        false },
1276     //{ "discard", true },
1277     { "blend",   false },
1278     //{ "mean",    true  },
1279     //{ "bob",     true },
1280     //{ "linear",  true },
1281     { "x",       false },
1282     //{ "yadif",   true },
1283     //{ "yadif2x", true },
1284     { NULL,      false }
1285 };
1286 static const deinterlace_mode_t *DeinterlaceGetMode( const char *psz_mode )
1287 {
1288     for( const deinterlace_mode_t *p_mode = &p_deinterlace_mode[0]; p_mode->psz_mode; p_mode++ )
1289     {
1290         if( !strcmp( p_mode->psz_mode, psz_mode ) )
1291             return p_mode;
1292     }
1293     return NULL;
1294 }
1295
1296 static char *FilterFind( char *psz_filter_base, const char *psz_module )
1297 {
1298     const size_t i_module = strlen( psz_module );
1299     const char *psz_filter = psz_filter_base;
1300
1301     if( !psz_filter || i_module <= 0 )
1302         return NULL;
1303
1304     for( ;; )
1305     {
1306         char *psz_find = strstr( psz_filter, psz_module );
1307         if( !psz_find )
1308             return NULL;
1309         if( psz_find[i_module] == '\0' || psz_find[i_module] == ':' )
1310             return psz_find;
1311         psz_filter = &psz_find[i_module];
1312     }
1313 }
1314
1315 static bool DeinterlaceIsPresent( vout_thread_t *p_vout, bool b_vout_filter )
1316 {
1317     char *psz_filter = var_GetNonEmptyString( p_vout, b_vout_filter ? "vout-filter" : "video-filter" );
1318
1319     bool b_found = FilterFind( psz_filter, "deinterlace" ) != NULL;
1320
1321     free( psz_filter );
1322
1323     return b_found;
1324 }
1325
1326 static void DeinterlaceRemove( vout_thread_t *p_vout, bool b_vout_filter )
1327 {
1328     const char *psz_variable = b_vout_filter ? "vout-filter" : "video-filter";
1329     char *psz_filter = var_GetNonEmptyString( p_vout, psz_variable );
1330
1331     char *psz = FilterFind( psz_filter, "deinterlace" );
1332     if( !psz )
1333     {
1334         free( psz_filter );
1335         return;
1336     }
1337
1338     /* */
1339     strcpy( &psz[0], &psz[strlen("deinterlace")] );
1340     if( *psz == ':' )
1341         strcpy( &psz[0], &psz[1] );
1342
1343     var_SetString( p_vout, psz_variable, psz_filter );
1344     free( psz_filter );
1345 }
1346 static void DeinterlaceAdd( vout_thread_t *p_vout, bool b_vout_filter )
1347 {
1348     const char *psz_variable = b_vout_filter ? "vout-filter" : "video-filter";
1349
1350     char *psz_filter = var_GetNonEmptyString( p_vout, psz_variable );
1351
1352     if( FilterFind( psz_filter, "deinterlace" ) )
1353     {
1354         free( psz_filter );
1355         return;
1356     }
1357
1358     /* */
1359     if( psz_filter )
1360     {
1361         char *psz_tmp = psz_filter;
1362         if( asprintf( &psz_filter, "%s:%s", psz_tmp, "deinterlace" ) < 0 )
1363             psz_filter = psz_tmp;
1364         else
1365             free( psz_tmp );
1366     }
1367     else
1368     {
1369         psz_filter = strdup( "deinterlace" );
1370     }
1371
1372     if( psz_filter )
1373     {
1374         var_SetString( p_vout, psz_variable, psz_filter );
1375         free( psz_filter );
1376     }
1377 }
1378
1379 static void DeinterlaceSave( vout_thread_t *p_vout, int i_deinterlace, const char *psz_mode, bool is_needed )
1380 {
1381     /* We have to set input variable to ensure restart support
1382      * XXX it is only needed because of vout-filter but must be done
1383      * for non video filter anyway */
1384     vlc_object_t *p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT, FIND_PARENT );
1385     if( !p_input )
1386         return;
1387
1388     /* Another hack for "vout filter" mode */
1389     if( i_deinterlace < 0 )
1390         i_deinterlace = is_needed ? -2 : -3;
1391
1392     var_Create( p_input, "deinterlace", VLC_VAR_INTEGER );
1393     var_SetInteger( p_input, "deinterlace", i_deinterlace );
1394
1395     static const char * const ppsz_variable[] = {
1396         "deinterlace-mode",
1397         "filter-deinterlace-mode",
1398         "sout-deinterlace-mode",
1399         NULL
1400     };
1401     for( int i = 0; ppsz_variable[i]; i++ )
1402     {
1403         var_Create( p_input, ppsz_variable[i], VLC_VAR_STRING );
1404         var_SetString( p_input, ppsz_variable[i], psz_mode );
1405     }
1406
1407     vlc_object_release( p_input );
1408 }
1409 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1410                                 vlc_value_t oldval, vlc_value_t newval, void *p_data )
1411 {
1412     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(newval); VLC_UNUSED(p_data);
1413     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1414
1415     /* */
1416     const int  i_deinterlace = var_GetInteger( p_this, "deinterlace" );
1417     char       *psz_mode     = var_GetString( p_this, "deinterlace-mode" );
1418     const bool is_needed     = var_GetBool( p_this, "deinterlace-needed" );
1419     if( !psz_mode )
1420         return VLC_EGENERIC;
1421
1422     DeinterlaceSave( p_vout, i_deinterlace, psz_mode, is_needed );
1423
1424     /* */
1425     bool b_vout_filter = false;
1426     const deinterlace_mode_t *p_mode = DeinterlaceGetMode( psz_mode );
1427     if( p_mode )
1428         b_vout_filter = p_mode->b_vout_filter;
1429
1430     /* */
1431     char *psz_old;
1432     if( b_vout_filter )
1433     {
1434         psz_old = var_CreateGetString( p_vout, "filter-deinterlace-mode" );
1435     }
1436     else
1437     {
1438         psz_old = var_CreateGetString( p_vout, "sout-deinterlace-mode" );
1439         var_SetString( p_vout, "sout-deinterlace-mode", psz_mode );
1440     }
1441
1442     msg_Dbg( p_vout, "deinterlace %d, mode %s, is_needed %d", i_deinterlace, psz_mode, is_needed );
1443     if( i_deinterlace == 0 || ( i_deinterlace == -1 && !is_needed ) )
1444     {
1445         DeinterlaceRemove( p_vout, false );
1446         DeinterlaceRemove( p_vout, true );
1447     }
1448     else
1449     {
1450         if( !DeinterlaceIsPresent( p_vout, b_vout_filter ) )
1451         {
1452             DeinterlaceRemove( p_vout, !b_vout_filter );
1453             DeinterlaceAdd( p_vout, b_vout_filter );
1454         }
1455         else
1456         {
1457             /* The deinterlace filter was already inserted but we have changed the mode */
1458             DeinterlaceRemove( p_vout, !b_vout_filter );
1459             if( psz_old && strcmp( psz_old, psz_mode ) )
1460                 var_TriggerCallback( p_vout, b_vout_filter ? "vout-filter" : "video-filter" );
1461         }
1462     }
1463
1464     /* */
1465     free( psz_old );
1466     free( psz_mode );
1467     return VLC_SUCCESS;
1468 }
1469
1470 static void DeinterlaceEnable( vout_thread_t *p_vout )
1471 {
1472     vlc_value_t val, text;
1473
1474     if( !p_vout->p->b_first_vout )
1475         return;
1476
1477     msg_Dbg( p_vout, "Deinterlacing available" );
1478
1479     /* Create the configuration variables */
1480     /* */
1481     var_Create( p_vout, "deinterlace", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT | VLC_VAR_HASCHOICE );
1482     int i_deinterlace = var_GetInteger( p_vout, "deinterlace" );
1483
1484     text.psz_string = _("Deinterlace");
1485     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
1486
1487     const module_config_t *p_optd = config_FindConfig( VLC_OBJECT(p_vout), "deinterlace" );
1488     var_Change( p_vout, "deinterlace", VLC_VAR_CLEARCHOICES, NULL, NULL );
1489     for( int i = 0; p_optd && i < p_optd->i_list; i++ )
1490     {
1491         val.i_int  = p_optd->pi_list[i];
1492         text.psz_string = (char*)vlc_gettext(p_optd->ppsz_list_text[i]);
1493         var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
1494     }
1495     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
1496     /* */
1497     var_Create( p_vout, "deinterlace-mode", VLC_VAR_STRING | VLC_VAR_DOINHERIT | VLC_VAR_HASCHOICE );
1498     char *psz_deinterlace = var_GetNonEmptyString( p_vout, "deinterlace-mode" );
1499
1500     text.psz_string = _("Deinterlace mode");
1501     var_Change( p_vout, "deinterlace-mode", VLC_VAR_SETTEXT, &text, NULL );
1502
1503     const module_config_t *p_optm = config_FindConfig( VLC_OBJECT(p_vout), "deinterlace-mode" );
1504     var_Change( p_vout, "deinterlace-mode", VLC_VAR_CLEARCHOICES, NULL, NULL );
1505     for( int i = 0; p_optm && i < p_optm->i_list; i++ )
1506     {
1507         if( !DeinterlaceGetMode( p_optm->ppsz_list[i] ) )
1508             continue;
1509
1510         val.psz_string  = p_optm->ppsz_list[i];
1511         text.psz_string = (char*)vlc_gettext(p_optm->ppsz_list_text[i]);
1512         var_Change( p_vout, "deinterlace-mode", VLC_VAR_ADDCHOICE, &val, &text );
1513     }
1514     var_AddCallback( p_vout, "deinterlace-mode", DeinterlaceCallback, NULL );
1515     /* */
1516     var_Create( p_vout, "deinterlace-needed", VLC_VAR_BOOL );
1517     var_AddCallback( p_vout, "deinterlace-needed", DeinterlaceCallback, NULL );
1518
1519     /* Override the initial value from filters if present */
1520     char *psz_filter_mode = NULL;
1521     if( DeinterlaceIsPresent( p_vout, true ) )
1522         psz_filter_mode = var_CreateGetNonEmptyString( p_vout, "filter-deinterlace-mode" );
1523     else if( DeinterlaceIsPresent( p_vout, false ) )
1524         psz_filter_mode = var_CreateGetNonEmptyString( p_vout, "sout-deinterlace-mode" );
1525     if( psz_filter_mode )
1526     {
1527         free( psz_deinterlace );
1528         if( i_deinterlace >= -1 )
1529             i_deinterlace = 1;
1530         psz_deinterlace = psz_filter_mode;
1531     }
1532
1533     /* */
1534     if( i_deinterlace == -2 )
1535         p_vout->p->displayed.is_interlaced = true;
1536     else if( i_deinterlace == -3 )
1537         p_vout->p->displayed.is_interlaced = false;
1538     if( i_deinterlace < 0 )
1539         i_deinterlace = -1;
1540
1541     /* */
1542     val.psz_string = psz_deinterlace ? psz_deinterlace : p_optm->orig.psz;
1543     var_Change( p_vout, "deinterlace-mode", VLC_VAR_SETVALUE, &val, NULL );
1544     val.b_bool = p_vout->p->displayed.is_interlaced;
1545     var_Change( p_vout, "deinterlace-needed", VLC_VAR_SETVALUE, &val, NULL );
1546
1547     var_SetInteger( p_vout, "deinterlace", i_deinterlace );
1548     free( psz_deinterlace );
1549 }
1550
1551 static void DeinterlaceNeeded( vout_thread_t *p_vout, bool is_interlaced )
1552 {
1553     msg_Dbg( p_vout, "Detected %s video",
1554              is_interlaced ? "interlaced" : "progressive" );
1555     var_SetBool( p_vout, "deinterlace-needed", is_interlaced );
1556 }
1557
1558 /* */
1559 static void PrintVideoFormat(vout_thread_t *vout,
1560                              const char *description,
1561                              const video_format_t *fmt)
1562 {
1563     msg_Dbg(vout, "%s sz %ix%i, of (%i,%i), vsz %ix%i, 4cc %4.4s, sar %i:%i, msk r0x%x g0x%x b0x%x",
1564             description,
1565             fmt->i_width, fmt->i_height, fmt->i_x_offset, fmt->i_y_offset,
1566             fmt->i_visible_width, fmt->i_visible_height,
1567             (char*)&fmt->i_chroma,
1568             fmt->i_sar_num, fmt->i_sar_den,
1569             fmt->i_rmask, fmt->i_gmask, fmt->i_bmask);
1570 }
1571