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/vlc.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 #include <vlc_playlist.h>
  48
  49 #include <vlc_filter.h>
  50 #include <vlc_osd.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 "modules/modules.h"
  61
  62 /*****************************************************************************
  63  * Local prototypes
  64  *****************************************************************************/
  65 static int      InitThread        ( vout_thread_t * );
  66 static void     RunThread         ( vout_thread_t * );
  67 static void     ErrorThread       ( vout_thread_t * );
  68 static void     EndThread         ( vout_thread_t * );
  69
  70 static void     AspectRatio       ( int, int *, int * );
  71 static int      BinaryLog         ( uint32_t );
  72 static void     MaskToShift       ( int *, int *, uint32_t );
  73
  74 static void     vout_Destructor   ( vlc_object_t * p_this );
  75
  76 /* Object variables callbacks */
  77 static int DeinterlaceCallback( vlc_object_t *, char const *,
  78                                 vlc_value_t, vlc_value_t, void * );
  79 static int FilterCallback( vlc_object_t *, char const *,
  80                            vlc_value_t, vlc_value_t, void * );
  81 static int VideoFilter2Callback( vlc_object_t *, char const *,
  82                                  vlc_value_t, vlc_value_t, void * );
  83
  84 /* From vout_intf.c */
  85 int vout_Snapshot( vout_thread_t *, picture_t * );
  86
  87 /* Video filter2 parsing */
  88 static int ParseVideoFilter2Chain( vout_thread_t *, char * );
  89 static void RemoveVideoFilters2( vout_thread_t *p_vout );
  90
  91 /* Display media title in OSD */
  92 static void DisplayTitleOnOSD( vout_thread_t *p_vout );
  93
  94 /*****************************************************************************
  95  * Video Filter2 functions
  96  *****************************************************************************/
  97 struct filter_owner_sys_t
  98 {
  99     vout_thread_t *p_vout;
 100 };
 101
 102 static picture_t *video_new_buffer_filter( filter_t *p_filter )
 103 {
 104     picture_t *p_picture;
 105     vout_thread_t *p_vout = p_filter->p_owner->p_vout;
 106
 107     p_picture = vout_CreatePicture( p_vout, 0, 0, 0 );
 108
 109     return p_picture;
 110 }
 111
 112 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
 113 {
 114     vout_DestroyPicture( p_filter->p_owner->p_vout, p_pic );
 115 }
 116
 117 /*****************************************************************************
 118  * vout_Request: find a video output thread, create one, or destroy one.
 119  *****************************************************************************
 120  * This function looks for a video output thread matching the current
 121  * properties. If not found, it spawns a new one.
 122  *****************************************************************************/
 123 vout_thread_t *__vout_Request( vlc_object_t *p_this, vout_thread_t *p_vout,
 124                                video_format_t *p_fmt )
 125 {
 126     if( !p_fmt )
 127     {
 128         /* Reattach video output to playlist before bailing out */
 129         if( p_vout )
 130         {
 131             spu_Attach( p_vout->p_spu, p_this, false );
 132             vlc_object_detach( p_vout );
 133             vlc_object_attach( p_vout, p_this->p_libvlc );
 134         }
 135         return NULL;
 136     }
 137
 138     /* If a video output was provided, lock it, otherwise look for one. */
 139     if( p_vout )
 140     {
 141         vlc_object_yield( p_vout );
 142     }
 143     else
 144     {
 145         p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD );
 146
 147         if( !p_vout )
 148         {
 149             p_vout = vlc_object_find( p_this->p_libvlc,
 150                                       VLC_OBJECT_VOUT, FIND_CHILD );
 151             /* only first children of p_input for unused vout */
 152             if( p_vout && p_vout->p_parent != VLC_OBJECT(p_this->p_libvlc) )
 153             {
 154                 vlc_object_release( p_vout );
 155                 p_vout = NULL;
 156             }
 157             if( p_vout )
 158                 vlc_object_detach( p_vout );    /* Remove it from the GC */
 159         }
 160     }
 161
 162     /* If we now have a video output, check it has the right properties */
 163     if( p_vout )
 164     {
 165         char *psz_filter_chain;
 166         vlc_value_t val;
 167
 168         /* We don't directly check for the "vout-filter" variable for obvious
 169          * performance reasons. */
 170         if( p_vout->b_filter_change )
 171         {
 172             var_Get( p_vout, "vout-filter", &val );
 173             psz_filter_chain = val.psz_string;
 174
 175             if( psz_filter_chain && !*psz_filter_chain )
 176             {
 177                 free( psz_filter_chain );
 178                 psz_filter_chain = NULL;
 179             }
 180             if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
 181             {
 182                 free( p_vout->psz_filter_chain );
 183                 p_vout->psz_filter_chain = NULL;
 184             }
 185
 186             if( !psz_filter_chain && !p_vout->psz_filter_chain )
 187             {
 188                 p_vout->b_filter_change = false;
 189             }
 190
 191             free( psz_filter_chain );
 192         }
 193
 194         if( ( p_vout->fmt_render.i_width != p_fmt->i_width ) ||
 195             ( p_vout->fmt_render.i_height != p_fmt->i_height ) ||
 196             ( p_vout->fmt_render.i_aspect != p_fmt->i_aspect ) ||
 197             p_vout->b_filter_change )
 198         {
 199             /* We are not interested in this format, close this vout */
 200             vlc_object_release( p_vout );
 201             vout_Destroy( p_vout );
 202             p_vout = NULL;
 203         }
 204         else
 205         {
 206             /* This video output is cool! Hijack it. */
 207             spu_Attach( p_vout->p_spu, p_this, true );
 208             vlc_object_attach( p_vout, p_this );
 209             if( p_vout->b_title_show )
 210                 DisplayTitleOnOSD( p_vout );
 211             vlc_object_release( p_vout );
 212         }
 213     }
 214
 215     if( !p_vout )
 216     {
 217         msg_Dbg( p_this, "no usable vout present, spawning one" );
 218
 219         p_vout = vout_Create( p_this, p_fmt );
 220     }
 221
 222     return p_vout;
 223 }
 224
 225 /*****************************************************************************
 226  * vout_Create: creates a new video output thread
 227  *****************************************************************************
 228  * This function creates a new video output thread, and returns a pointer
 229  * to its description. On error, it returns NULL.
 230  *****************************************************************************/
 231 vout_thread_t * __vout_Create( vlc_object_t *p_parent, video_format_t *p_fmt )
 232 {
 233     vout_thread_t  * p_vout;                            /* thread descriptor */
 234     input_thread_t * p_input_thread;
 235     int              i_index;                               /* loop variable */
 236     vlc_value_t      val, text;
 237
 238     unsigned int i_width = p_fmt->i_width;
 239     unsigned int i_height = p_fmt->i_height;
 240     vlc_fourcc_t i_chroma = p_fmt->i_chroma;
 241     unsigned int i_aspect = p_fmt->i_aspect;
 242
 243     config_chain_t *p_cfg;
 244     char *psz_parser;
 245     char *psz_name;
 246
 247     /* Allocate descriptor */
 248     p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
 249     if( p_vout == NULL )
 250     {
 251         msg_Err( p_parent, "out of memory" );
 252         return NULL;
 253     }
 254
 255     /* Initialize pictures - translation tables and functions
 256      * will be initialized later in InitThread */
 257     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
 258     {
 259         p_vout->p_picture[i_index].pf_lock = NULL;
 260         p_vout->p_picture[i_index].pf_unlock = NULL;
 261         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 262         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 263         p_vout->p_picture[i_index].b_slow   = 0;
 264     }
 265
 266     /* No images in the heap */
 267     p_vout->i_heap_size = 0;
 268
 269     /* Initialize the rendering heap */
 270     I_RENDERPICTURES = 0;
 271
 272     vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
 273                  p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 274     p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
 275     p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
 276
 277     p_vout->render.i_width    = i_width;
 278     p_vout->render.i_height   = i_height;
 279     p_vout->render.i_chroma   = i_chroma;
 280     p_vout->render.i_aspect   = i_aspect;
 281
 282     p_vout->render.i_rmask    = 0;
 283     p_vout->render.i_gmask    = 0;
 284     p_vout->render.i_bmask    = 0;
 285
 286     p_vout->render.i_last_used_pic = -1;
 287     p_vout->render.b_allow_modify_pics = 1;
 288
 289     /* Zero the output heap */
 290     I_OUTPUTPICTURES = 0;
 291     p_vout->output.i_width    = 0;
 292     p_vout->output.i_height   = 0;
 293     p_vout->output.i_chroma   = 0;
 294     p_vout->output.i_aspect   = 0;
 295
 296     p_vout->output.i_rmask    = 0;
 297     p_vout->output.i_gmask    = 0;
 298     p_vout->output.i_bmask    = 0;
 299
 300     /* Initialize misc stuff */
 301     p_vout->i_changes    = 0;
 302     p_vout->f_gamma      = 0;
 303     p_vout->b_grayscale  = 0;
 304     p_vout->b_info       = 0;
 305     p_vout->b_interface  = 0;
 306     p_vout->b_scale      = 1;
 307     p_vout->b_fullscreen = 0;
 308     p_vout->i_alignment  = 0;
 309     p_vout->render_time  = 10;
 310     p_vout->c_fps_samples = 0;
 311     p_vout->b_filter_change = 0;
 312     p_vout->pf_control = 0;
 313     p_vout->p_parent_intf = 0;
 314     p_vout->i_par_num = p_vout->i_par_den = 1;
 315
 316     /* Initialize locks */
 317     vlc_mutex_init( &p_vout->picture_lock );
 318     vlc_mutex_init( &p_vout->change_lock );
 319     vlc_mutex_init( &p_vout->vfilter_lock );
 320
 321     /* Mouse coordinates */
 322     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 323     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 324     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 325     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 326     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 327
 328     /* Initialize subpicture unit */
 329     p_vout->p_spu = spu_Create( p_vout );
 330     spu_Attach( p_vout->p_spu, p_parent, true );
 331
 332     /* Attach the new object now so we can use var inheritance below */
 333     vlc_object_attach( p_vout, p_parent );
 334
 335     spu_Init( p_vout->p_spu );
 336
 337     /* Take care of some "interface/control" related initialisations */
 338     vout_IntfInit( p_vout );
 339
 340     /* If the parent is not a VOUT object, that means we are at the start of
 341      * the video output pipe */
 342     if( p_parent->i_object_type != VLC_OBJECT_VOUT )
 343     {
 344         /* Look for the default filter configuration */
 345         var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 346         var_Get( p_vout, "vout-filter", &val );
 347         p_vout->psz_filter_chain = val.psz_string;
 348
 349         /* Apply video filter2 objects on the first vout */
 350         var_Create( p_vout, "video-filter",
 351                     VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 352         var_Get( p_vout, "video-filter", &val );
 353         ParseVideoFilter2Chain( p_vout, val.psz_string );
 354         free( val.psz_string );
 355     }
 356     else
 357     {
 358         /* continue the parent's filter chain */
 359         char *psz_tmp;
 360
 361         /* Ugly hack to jump to our configuration chain */
 362         p_vout->psz_filter_chain
 363             = ((vout_thread_t *)p_parent)->psz_filter_chain;
 364         p_vout->psz_filter_chain
 365             = config_ChainCreate( &psz_tmp, &p_cfg, p_vout->psz_filter_chain );
 366         config_ChainDestroy( p_cfg );
 367         free( psz_tmp );
 368
 369         /* Create a video filter2 var ... but don't inherit values */
 370         var_Create( p_vout, "video-filter", VLC_VAR_STRING );
 371         ParseVideoFilter2Chain( p_vout, NULL );
 372     }
 373
 374     var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
 375     p_vout->b_vfilter_change = true;
 376     p_vout->i_vfilters = 0;
 377
 378     /* Choose the video output module */
 379     if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 380     {
 381         var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 382         var_Get( p_vout, "vout", &val );
 383         psz_parser = val.psz_string;
 384     }
 385     else
 386     {
 387         psz_parser = strdup( p_vout->psz_filter_chain );
 388     }
 389
 390     /* Create the vout thread */
 391     config_ChainCreate( &psz_name, &p_cfg, psz_parser );
 392     free( psz_parser );
 393     p_vout->p_cfg = p_cfg;
 394     p_vout->p_module = module_Need( p_vout,
 395         ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
 396         "video filter" : "video output", psz_name, p_vout->psz_filter_chain && *p_vout->psz_filter_chain );
 397     free( psz_name );
 398
 399     if( p_vout->p_module == NULL )
 400     {
 401         msg_Err( p_vout, "no suitable vout module" );
 402         vlc_object_detach( p_vout );
 403         vlc_object_release( p_vout );
 404         return NULL;
 405     }
 406
 407     /* Create a few object variables for interface interaction */
 408     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
 409     text.psz_string = _("Deinterlace");
 410     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
 411     val.psz_string = (char *)""; text.psz_string = _("Disable");
 412     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 413     val.psz_string = (char *)"discard"; text.psz_string = _("Discard");
 414     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 415     val.psz_string = (char *)"blend"; text.psz_string = _("Blend");
 416     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 417     val.psz_string = (char *)"mean"; text.psz_string = _("Mean");
 418     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 419     val.psz_string = (char *)"bob"; text.psz_string = _("Bob");
 420     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 421     val.psz_string = (char *)"linear"; text.psz_string = _("Linear");
 422     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 423     val.psz_string = (char *)"x"; text.psz_string = (char *)"X";
 424     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 425
 426     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 427     {
 428         var_Set( p_vout, "deinterlace", val );
 429         free( val.psz_string );
 430     }
 431     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 432
 433     var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 434     text.psz_string = _("Filters");
 435     var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
 436     var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
 437
 438     /* Calculate delay created by internal caching */
 439     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 440                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 441     if( p_input_thread )
 442     {
 443         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 444         vlc_object_release( p_input_thread );
 445     }
 446     else
 447     {
 448         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 449     }
 450
 451     if( vlc_thread_create( p_vout, "video output", RunThread,
 452                            VLC_THREAD_PRIORITY_OUTPUT, true ) )
 453     {
 454         msg_Err( p_vout, "out of memory" );
 455         module_Unneed( p_vout, p_vout->p_module );
 456         vlc_object_release( p_vout );
 457         return NULL;
 458     }
 459
 460     if( p_vout->b_error )
 461     {
 462         msg_Err( p_vout, "video output creation failed" );
 463
 464         /* Make sure the thread is destroyed */
 465         vlc_object_release( p_vout );
 466         return NULL;
 467     }
 468
 469     vlc_object_set_destructor( p_vout, vout_Destructor );
 470
 471     return p_vout;
 472 }
 473
 474 /*****************************************************************************
 475  * vout_Destroy: destroys a previously created video output
 476  *****************************************************************************
 477  * Destroy a terminated thread.
 478  * The function will request a destruction of the specified thread. If pi_error
 479  * is NULL, it will return once the thread is destroyed. Else, it will be
 480  * update using one of the THREAD_* constants.
 481  *****************************************************************************/
 482 void vout_Destroy( vout_thread_t *p_vout )
 483 {
 484     /* XXX: should go in the destructor */
 485     var_Destroy( p_vout, "intf-change" );
 486
 487     vlc_object_release( p_vout );
 488 }
 489
 490 static void vout_Destructor( vlc_object_t * p_this )
 491 {
 492     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 493
 494     /* Destroy the locks */
 495     vlc_mutex_destroy( &p_vout->picture_lock );
 496     vlc_mutex_destroy( &p_vout->change_lock );
 497     vlc_mutex_destroy( &p_vout->vfilter_lock );
 498
 499     /* Release the module */
 500     if( p_vout->p_module )
 501     {
 502         module_Unneed( p_vout, p_vout->p_module );
 503     }
 504
 505     free( p_vout->psz_filter_chain );
 506
 507     config_ChainDestroy( p_vout->p_cfg );
 508
 509 #ifndef __APPLE__
 510     vout_thread_t *p_another_vout;
 511
 512     playlist_t *p_playlist = pl_Yield( p_this );
 513     if( !p_playlist )
 514         return;
 515
 516     /* This is a dirty hack mostly for Linux, where there is no way to get the
 517      * GUI back if you closed it while playing video. This is solved in
 518      * Mac OS X, where we have this novelty called menubar, that will always
 519      * allow you access to the applications main functionality. They should try
 520      * that on linux sometime. */
 521     p_another_vout = vlc_object_find( p_this->p_libvlc,
 522                                       VLC_OBJECT_VOUT, FIND_ANYWHERE );
 523     if( p_another_vout == NULL )
 524         var_SetBool( p_playlist, "intf-show", true );
 525     else
 526         vlc_object_release( p_another_vout );
 527     pl_Release( p_playlist );
 528 #endif
 529 }
 530
 531 /*****************************************************************************
 532  * InitThread: initialize video output thread
 533  *****************************************************************************
 534  * This function is called from RunThread and performs the second step of the
 535  * initialization. It returns 0 on success. Note that the thread's flag are not
 536  * modified inside this function.
 537  *****************************************************************************/
 538 static int InitThread( vout_thread_t *p_vout )
 539 {
 540     int i, i_aspect_x, i_aspect_y;
 541
 542     vlc_mutex_lock( &p_vout->change_lock );
 543
 544 #ifdef STATS
 545     p_vout->c_loops = 0;
 546 #endif
 547
 548     /* Initialize output method, it allocates direct buffers for us */
 549     if( p_vout->pf_init( p_vout ) )
 550     {
 551         vlc_mutex_unlock( &p_vout->change_lock );
 552         return VLC_EGENERIC;
 553     }
 554
 555     if( !I_OUTPUTPICTURES )
 556     {
 557         msg_Err( p_vout, "plugin was unable to allocate at least "
 558                          "one direct buffer" );
 559         p_vout->pf_end( p_vout );
 560         vlc_mutex_unlock( &p_vout->change_lock );
 561         return VLC_EGENERIC;
 562     }
 563
 564     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 565     {
 566         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 567                          "our internal buffers must have overflown." );
 568         p_vout->pf_end( p_vout );
 569         vlc_mutex_unlock( &p_vout->change_lock );
 570         return VLC_EGENERIC;
 571     }
 572
 573     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 574
 575     AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );
 576
 577     msg_Dbg( p_vout, "picture in %ix%i (%i,%i,%ix%i), "
 578              "chroma %4.4s, ar %i:%i, sar %i:%i",
 579              p_vout->fmt_render.i_width, p_vout->fmt_render.i_height,
 580              p_vout->fmt_render.i_x_offset, p_vout->fmt_render.i_y_offset,
 581              p_vout->fmt_render.i_visible_width,
 582              p_vout->fmt_render.i_visible_height,
 583              (char*)&p_vout->fmt_render.i_chroma,
 584              i_aspect_x, i_aspect_y,
 585              p_vout->fmt_render.i_sar_num, p_vout->fmt_render.i_sar_den );
 586
 587     AspectRatio( p_vout->fmt_in.i_aspect, &i_aspect_x, &i_aspect_y );
 588
 589     msg_Dbg( p_vout, "picture user %ix%i (%i,%i,%ix%i), "
 590              "chroma %4.4s, ar %i:%i, sar %i:%i",
 591              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 592              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 593              p_vout->fmt_in.i_visible_width,
 594              p_vout->fmt_in.i_visible_height,
 595              (char*)&p_vout->fmt_in.i_chroma,
 596              i_aspect_x, i_aspect_y,
 597              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 598
 599     if( !p_vout->fmt_out.i_width || !p_vout->fmt_out.i_height )
 600     {
 601         p_vout->fmt_out.i_width = p_vout->fmt_out.i_visible_width =
 602             p_vout->output.i_width;
 603         p_vout->fmt_out.i_height = p_vout->fmt_out.i_visible_height =
 604             p_vout->output.i_height;
 605         p_vout->fmt_out.i_x_offset =  p_vout->fmt_out.i_y_offset = 0;
 606
 607         p_vout->fmt_out.i_aspect = p_vout->output.i_aspect;
 608         p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 609     }
 610     if( !p_vout->fmt_out.i_sar_num || !p_vout->fmt_out.i_sar_num )
 611     {
 612         p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_aspect *
 613             p_vout->fmt_out.i_height;
 614         p_vout->fmt_out.i_sar_den = VOUT_ASPECT_FACTOR *
 615             p_vout->fmt_out.i_width;
 616     }
 617
 618     vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
 619                  p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
 620
 621     AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
 622
 623     msg_Dbg( p_vout, "picture out %ix%i (%i,%i,%ix%i), "
 624              "chroma %4.4s, ar %i:%i, sar %i:%i",
 625              p_vout->fmt_out.i_width, p_vout->fmt_out.i_height,
 626              p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
 627              p_vout->fmt_out.i_visible_width,
 628              p_vout->fmt_out.i_visible_height,
 629              (char*)&p_vout->fmt_out.i_chroma,
 630              i_aspect_x, i_aspect_y,
 631              p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den );
 632
 633     /* Calculate shifts from system-updated masks */
 634     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 635                  p_vout->output.i_rmask );
 636     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 637                  p_vout->output.i_gmask );
 638     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 639                  p_vout->output.i_bmask );
 640
 641     /* Check whether we managed to create direct buffers similar to
 642      * the render buffers, ie same size and chroma */
 643     if( ( p_vout->output.i_width == p_vout->render.i_width )
 644      && ( p_vout->output.i_height == p_vout->render.i_height )
 645      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 646     {
 647         /* Cool ! We have direct buffers, we can ask the decoder to
 648          * directly decode into them ! Map the first render buffers to
 649          * the first direct buffers, but keep the first direct buffer
 650          * for memcpy operations */
 651         p_vout->b_direct = 1;
 652
 653         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 654         {
 655             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 656                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 657                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 658             {
 659                 /* We have enough direct buffers so there's no need to
 660                  * try to use system memory buffers. */
 661                 break;
 662             }
 663             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 664             I_RENDERPICTURES++;
 665         }
 666
 667         msg_Dbg( p_vout, "direct render, mapping "
 668                  "render pictures 0-%i to system pictures 1-%i",
 669                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 670     }
 671     else
 672     {
 673         /* Rats... Something is wrong here, we could not find an output
 674          * plugin able to directly render what we decode. See if we can
 675          * find a chroma plugin to do the conversion */
 676         p_vout->b_direct = 0;
 677
 678         /* Choose the best module */
 679         p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL, 0 );
 680
 681         if( p_vout->chroma.p_module == NULL )
 682         {
 683             msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
 684                      (char*)&p_vout->render.i_chroma,
 685                      (char*)&p_vout->output.i_chroma );
 686             p_vout->pf_end( p_vout );
 687             vlc_mutex_unlock( &p_vout->change_lock );
 688             return VLC_EGENERIC;
 689         }
 690
 691         msg_Dbg( p_vout, "indirect render, mapping "
 692                  "render pictures 0-%i to system pictures %i-%i",
 693                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 694                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 695
 696         /* Append render buffers after the direct buffers */
 697         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 698         {
 699             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 700             I_RENDERPICTURES++;
 701
 702             /* Check if we have enough render pictures */
 703             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 704                 break;
 705         }
 706     }
 707
 708     /* Link pictures back to their heap */
 709     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 710     {
 711         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 712     }
 713
 714     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 715     {
 716         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 717     }
 718
 719 /* XXX XXX mark thread ready */
 720     return VLC_SUCCESS;
 721 }
 722
 723 /*****************************************************************************
 724  * RunThread: video output thread
 725  *****************************************************************************
 726  * Video output thread. This function does only returns when the thread is
 727  * terminated. It handles the pictures arriving in the video heap and the
 728  * display device events.
 729  *****************************************************************************/
 730 static void RunThread( vout_thread_t *p_vout)
 731 {
 732     int             i_index;                                /* index in heap */
 733     int             i_idle_loops = 0;  /* loops without displaying a picture */
 734     mtime_t         current_date;                            /* current date */
 735     mtime_t         display_date;                            /* display date */
 736
 737     picture_t *     p_picture;                            /* picture pointer */
 738     picture_t *     p_last_picture = NULL;                   /* last picture */
 739     picture_t *     p_directbuffer;              /* direct buffer to display */
 740
 741     subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
 742
 743     input_thread_t *p_input = NULL ;           /* Parent input, if it exists */
 744
 745     vlc_value_t     val;
 746     bool      b_drop_late;
 747
 748     int             i_displayed = 0, i_lost = 0, i_loops = 0;
 749
 750     /*
 751      * Initialize thread
 752      */
 753     p_vout->b_error = InitThread( p_vout );
 754
 755     var_Create( p_vout, "drop-late-frames", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 756     var_Get( p_vout, "drop-late-frames", &val );
 757     b_drop_late = val.b_bool;
 758
 759     /* signal the creation of the vout */
 760     vlc_thread_ready( p_vout );
 761
 762     if( p_vout->b_error )
 763         return;
 764
 765     vlc_object_lock( p_vout );
 766
 767     if( p_vout->b_title_show )
 768         DisplayTitleOnOSD( p_vout );
 769
 770     /*
 771      * Main loop - it is not executed if an error occurred during
 772      * initialization
 773      */
 774     while( (vlc_object_alive( p_vout )) && (!p_vout->b_error) )
 775     {
 776         /* Initialize loop variables */
 777         p_picture = NULL;
 778         display_date = 0;
 779         current_date = mdate();
 780
 781         i_loops++;
 782             if( !p_input )
 783             {
 784                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 785                                            FIND_PARENT );
 786             }
 787             if( p_input )
 788             {
 789                 vlc_mutex_lock( &p_input->p->counters.counters_lock );
 790                 stats_UpdateInteger( p_vout, p_input->p->counters.p_lost_pictures,
 791                                      i_lost , NULL);
 792                 stats_UpdateInteger( p_vout,
 793                                      p_input->p->counters.p_displayed_pictures,
 794                                      i_displayed , NULL);
 795                 i_displayed = i_lost = 0;
 796                 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 797                 vlc_object_release( p_input );
 798                 p_input = NULL;
 799             }
 800 #if 0
 801         p_vout->c_loops++;
 802         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 803         {
 804             msg_Dbg( p_vout, "picture heap: %d/%d",
 805                      I_RENDERPICTURES, p_vout->i_heap_size );
 806         }
 807 #endif
 808
 809         /*
 810          * Find the picture to display (the one with the earliest date).
 811          * This operation does not need lock, since only READY_PICTUREs
 812          * are handled. */
 813         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 814         {
 815             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 816                 && ( (p_picture == NULL) ||
 817                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 818             {
 819                 p_picture = PP_RENDERPICTURE[i_index];
 820                 display_date = p_picture->date;
 821             }
 822         }
 823
 824         if( p_picture )
 825         {
 826             /* If we met the last picture, parse again to see whether there is
 827              * a more appropriate one. */
 828             if( p_picture == p_last_picture )
 829             {
 830                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 831                 {
 832                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 833                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 834                         && ((p_picture == p_last_picture) ||
 835                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 836                     {
 837                         p_picture = PP_RENDERPICTURE[i_index];
 838                         display_date = p_picture->date;
 839                     }
 840                 }
 841             }
 842
 843             /* If we found better than the last picture, destroy it */
 844             if( p_last_picture && p_picture != p_last_picture )
 845             {
 846                 vlc_mutex_lock( &p_vout->picture_lock );
 847                 if( p_last_picture->i_refcount )
 848                 {
 849                     p_last_picture->i_status = DISPLAYED_PICTURE;
 850                 }
 851                 else
 852                 {
 853                     p_last_picture->i_status = DESTROYED_PICTURE;
 854                     p_vout->i_heap_size--;
 855                 }
 856                 vlc_mutex_unlock( &p_vout->picture_lock );
 857                 p_last_picture = NULL;
 858             }
 859
 860             /* Compute FPS rate */
 861             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 862                 = display_date;
 863
 864             if( !p_picture->b_force &&
 865                 p_picture != p_last_picture &&
 866                 display_date < current_date + p_vout->render_time &&
 867                 b_drop_late )
 868             {
 869                 /* Picture is late: it will be destroyed and the thread
 870                  * will directly choose the next picture */
 871                 vlc_mutex_lock( &p_vout->picture_lock );
 872                 if( p_picture->i_refcount )
 873                 {
 874                     /* Pretend we displayed the picture, but don't destroy
 875                      * it since the decoder might still need it. */
 876                     p_picture->i_status = DISPLAYED_PICTURE;
 877                 }
 878                 else
 879                 {
 880                     /* Destroy the picture without displaying it */
 881                     p_picture->i_status = DESTROYED_PICTURE;
 882                     p_vout->i_heap_size--;
 883                 }
 884                 msg_Warn( p_vout, "late picture skipped (%"PRId64")",
 885                                   current_date - display_date );
 886                 i_lost++;
 887                 vlc_mutex_unlock( &p_vout->picture_lock );
 888
 889                 continue;
 890             }
 891
 892             if( display_date >
 893                 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
 894             {
 895                 /* Picture is waaay too early: it will be destroyed */
 896                 vlc_mutex_lock( &p_vout->picture_lock );
 897                 if( p_picture->i_refcount )
 898                 {
 899                     /* Pretend we displayed the picture, but don't destroy
 900                      * it since the decoder might still need it. */
 901                     p_picture->i_status = DISPLAYED_PICTURE;
 902                 }
 903                 else
 904                 {
 905                     /* Destroy the picture without displaying it */
 906                     p_picture->i_status = DESTROYED_PICTURE;
 907                     p_vout->i_heap_size--;
 908                 }
 909                 i_lost++;
 910                 msg_Warn( p_vout, "vout warning: early picture skipped "
 911                           "(%"PRId64")", display_date - current_date
 912                           - p_vout->i_pts_delay );
 913                 vlc_mutex_unlock( &p_vout->picture_lock );
 914
 915                 continue;
 916             }
 917
 918             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 919             {
 920                 /* A picture is ready to be rendered, but its rendering date
 921                  * is far from the current one so the thread will perform an
 922                  * empty loop as if no picture were found. The picture state
 923                  * is unchanged */
 924                 p_picture    = NULL;
 925                 display_date = 0;
 926             }
 927             else if( p_picture == p_last_picture )
 928             {
 929                 /* We are asked to repeat the previous picture, but we first
 930                  * wait for a couple of idle loops */
 931                 if( i_idle_loops < 4 )
 932                 {
 933                     p_picture    = NULL;
 934                     display_date = 0;
 935                 }
 936                 else
 937                 {
 938                     /* We set the display date to something high, otherwise
 939                      * we'll have lots of problems with late pictures */
 940                     display_date = current_date + p_vout->render_time;
 941                 }
 942             }
 943         }
 944
 945         if( p_picture == NULL )
 946         {
 947             i_idle_loops++;
 948         }
 949
 950         /* Video Filter2 stuff */
 951         if( p_vout->b_vfilter_change == true )
 952         {
 953             int i;
 954             vlc_mutex_lock( &p_vout->vfilter_lock );
 955             RemoveVideoFilters2( p_vout );
 956             for( i = 0; i < p_vout->i_vfilters_cfg; i++ )
 957             {
 958                 filter_t *p_vfilter =
 959                     p_vout->pp_vfilters[p_vout->i_vfilters] =
 960                         vlc_object_create( p_vout, VLC_OBJECT_FILTER );
 961
 962                 vlc_object_attach( p_vfilter, p_vout );
 963
 964                 p_vfilter->pf_vout_buffer_new = video_new_buffer_filter;
 965                 p_vfilter->pf_vout_buffer_del = video_del_buffer_filter;
 966
 967                 if( !p_vout->i_vfilters )
 968                 {
 969                     p_vfilter->fmt_in.video = p_vout->fmt_render;
 970                 }
 971                 else
 972                 {
 973                     p_vfilter->fmt_in.video = (p_vfilter-1)->fmt_out.video;
 974                 }
 975                 /* TODO: one day filters in the middle of the chain might
 976                  * have a different fmt_out.video than fmt_render ... */
 977                 p_vfilter->fmt_out.video = p_vout->fmt_render;
 978
 979                 p_vfilter->p_cfg = p_vout->p_vfilters_cfg[i];
 980                 p_vfilter->p_module = module_Need( p_vfilter, "video filter2",
 981                                                    p_vout->psz_vfilters[i],
 982                                                    true );
 983
 984                 if( p_vfilter->p_module )
 985                 {
 986                     p_vfilter->p_owner =
 987                         malloc( sizeof( filter_owner_sys_t ) );
 988                     p_vfilter->p_owner->p_vout = p_vout;
 989                     p_vout->i_vfilters++;
 990                     msg_Dbg( p_vout, "video filter found (%s)",
 991                              p_vout->psz_vfilters[i] );
 992                 }
 993                 else
 994                 {
 995                     msg_Err( p_vout, "no video filter found (%s)",
 996                              p_vout->psz_vfilters[i] );
 997                     vlc_object_detach( p_vfilter );
 998                     vlc_object_release( p_vfilter );
 999                 }
1000             }
1001             p_vout->b_vfilter_change = false;
1002             vlc_mutex_unlock( &p_vout->vfilter_lock );
1003         }
1004
1005         if( p_picture )
1006         {
1007             int i;
1008             for( i = 0; i < p_vout->i_vfilters; i++ )
1009             {
1010                 picture_t *p_old = p_picture;
1011                 p_picture  = p_vout->pp_vfilters[i]->pf_video_filter(
1012                                  p_vout->pp_vfilters[i], p_picture );
1013                 if( !p_picture )
1014                 {
1015                     break;
1016                 }
1017                 /* FIXME: this is kind of wrong
1018                  * if you have 2 or more vfilters and the 2nd breaks,
1019                  * on the next loop the 1st one will be applied again */
1020
1021                 /* if p_old and p_picture are the same (ie the filter
1022                  * worked on the old picture), then following code is
1023                  * still alright since i_status gets changed back to
1024                  * the right value */
1025                 if( p_old->i_refcount )
1026                 {
1027                     p_old->i_status = DISPLAYED_PICTURE;
1028                 }
1029                 else
1030                 {
1031                     p_old->i_status = DESTROYED_PICTURE;
1032                 }
1033                 p_picture->i_status = READY_PICTURE;
1034             }
1035         }
1036
1037         if( p_picture && p_vout->b_snapshot )
1038         {
1039             p_vout->b_snapshot = false;
1040             vout_Snapshot( p_vout, p_picture );
1041         }
1042
1043         /*
1044          * Check for subpictures to display
1045          */
1046         if( display_date > 0 )
1047         {
1048             if( !p_input )
1049             {
1050                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
1051                                            FIND_PARENT );
1052             }
1053             p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date,
1054             p_input ? var_GetBool( p_input, "state" ) == PAUSE_S : false );
1055             if( p_input )
1056                 vlc_object_release( p_input );
1057             p_input = NULL;
1058         }
1059
1060         /*
1061          * Perform rendering
1062          */
1063         i_displayed++;
1064         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
1065
1066         /*
1067          * Call the plugin-specific rendering method if there is one
1068          */
1069         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
1070         {
1071             /* Render the direct buffer returned by vout_RenderPicture */
1072             p_vout->pf_render( p_vout, p_directbuffer );
1073         }
1074
1075         /*
1076          * Sleep, wake up
1077          */
1078         if( display_date != 0 && p_directbuffer != NULL )
1079         {
1080             mtime_t current_render_time = mdate() - current_date;
1081             /* if render time is very large we don't include it in the mean */
1082             if( current_render_time < p_vout->render_time +
1083                 VOUT_DISPLAY_DELAY )
1084             {
1085                 /* Store render time using a sliding mean weighting to
1086                  * current value in a 3 to 1 ratio*/
1087                 p_vout->render_time *= 3;
1088                 p_vout->render_time += current_render_time;
1089                 p_vout->render_time >>= 2;
1090             }
1091         }
1092
1093         /* Give back change lock */
1094         vlc_mutex_unlock( &p_vout->change_lock );
1095
1096         vlc_object_unlock( p_vout );
1097
1098         /* Sleep a while or until a given date */
1099         if( display_date != 0 )
1100         {
1101             /* If there are filters in the chain, better give them the picture
1102              * in advance */
1103             if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
1104             {
1105                 mwait( display_date - VOUT_MWAIT_TOLERANCE );
1106             }
1107         }
1108         else
1109         {
1110             msleep( VOUT_IDLE_SLEEP );
1111         }
1112
1113         /* On awakening, take back lock and send immediately picture
1114          * to display. */
1115         vlc_object_lock( p_vout );
1116         /* Note: vlc_object_alive() could be false here, and we
1117          * could be dead */
1118         vlc_mutex_lock( &p_vout->change_lock );
1119
1120         /*
1121          * Display the previously rendered picture
1122          */
1123         if( p_picture != NULL && p_directbuffer != NULL )
1124         {
1125             /* Display the direct buffer returned by vout_RenderPicture */
1126             if( p_vout->pf_display )
1127             {
1128                 p_vout->pf_display( p_vout, p_directbuffer );
1129             }
1130
1131             /* Tell the vout this was the last picture and that it does not
1132              * need to be forced anymore. */
1133             p_last_picture = p_picture;
1134             p_last_picture->b_force = 0;
1135         }
1136
1137         if( p_picture != NULL )
1138         {
1139             /* Reinitialize idle loop count */
1140             i_idle_loops = 0;
1141         }
1142
1143         /*
1144          * Check events and manage thread
1145          */
1146         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
1147         {
1148             /* A fatal error occurred, and the thread must terminate
1149              * immediately, without displaying anything - setting b_error to 1
1150              * causes the immediate end of the main while() loop. */
1151             p_vout->b_error = 1;
1152         }
1153
1154         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
1155         {
1156             /* this must only happen when the vout plugin is incapable of
1157              * rescaling the picture itself. In this case we need to destroy
1158              * the current picture buffers and recreate new ones with the right
1159              * dimensions */
1160             int i;
1161
1162             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
1163
1164             p_vout->pf_end( p_vout );
1165             for( i = 0; i < I_OUTPUTPICTURES; i++ )
1166                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
1167
1168             I_OUTPUTPICTURES = 0;
1169             if( p_vout->pf_init( p_vout ) )
1170             {
1171                 msg_Err( p_vout, "cannot resize display" );
1172                 /* FIXME: pf_end will be called again in EndThread() */
1173                 p_vout->b_error = 1;
1174             }
1175
1176             /* Need to reinitialise the chroma plugin */
1177             if( p_vout->chroma.p_module )
1178             {
1179                 if( p_vout->chroma.p_module->pf_deactivate )
1180                     p_vout->chroma.p_module->pf_deactivate( VLC_OBJECT(p_vout) );
1181                 p_vout->chroma.p_module->pf_activate( VLC_OBJECT(p_vout) );
1182             }
1183         }
1184
1185         if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1186         {
1187             /* This happens when the picture buffers need to be recreated.
1188              * This is useful on multimonitor displays for instance.
1189              *
1190              * Warning: This only works when the vout creates only 1 picture
1191              * buffer!! */
1192             p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1193
1194             if( !p_vout->b_direct )
1195             {
1196                 module_Unneed( p_vout, p_vout->chroma.p_module );
1197             }
1198
1199             vlc_mutex_lock( &p_vout->picture_lock );
1200
1201             p_vout->pf_end( p_vout );
1202
1203             I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1204
1205             p_vout->b_error = InitThread( p_vout );
1206
1207             vlc_mutex_unlock( &p_vout->picture_lock );
1208         }
1209     }
1210
1211
1212     if( p_input )
1213     {
1214         vlc_object_release( p_input );
1215     }
1216
1217     /*
1218      * Error loop - wait until the thread destruction is requested
1219      */
1220     if( p_vout->b_error )
1221     {
1222         ErrorThread( p_vout );
1223     }
1224
1225     /* End of thread */
1226     EndThread( p_vout );
1227     vlc_object_unlock( p_vout );
1228 }
1229
1230 /*****************************************************************************
1231  * ErrorThread: RunThread() error loop
1232  *****************************************************************************
1233  * This function is called when an error occurred during thread main's loop.
1234  * The thread can still receive feed, but must be ready to terminate as soon
1235  * as possible.
1236  *****************************************************************************/
1237 static void ErrorThread( vout_thread_t *p_vout )
1238 {
1239     /* Wait until a `die' order */
1240     while( !p_vout->b_die )
1241     {
1242         /* Sleep a while */
1243         msleep( VOUT_IDLE_SLEEP );
1244     }
1245 }
1246
1247 /*****************************************************************************
1248  * EndThread: thread destruction
1249  *****************************************************************************
1250  * This function is called when the thread ends after a sucessful
1251  * initialization. It frees all resources allocated by InitThread.
1252  *****************************************************************************/
1253 static void EndThread( vout_thread_t *p_vout )
1254 {
1255     int     i_index;                                        /* index in heap */
1256
1257 #ifdef STATS
1258     {
1259         struct tms cpu_usage;
1260         times( &cpu_usage );
1261
1262         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1263                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1264     }
1265 #endif
1266
1267     if( !p_vout->b_direct )
1268     {
1269         module_Unneed( p_vout, p_vout->chroma.p_module );
1270     }
1271
1272     /* Destroy all remaining pictures */
1273     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1274     {
1275         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1276         {
1277             free( p_vout->p_picture[i_index].p_data_orig );
1278         }
1279     }
1280
1281     /* Destroy subpicture unit */
1282     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), false );
1283     spu_Destroy( p_vout->p_spu );
1284
1285     /* Destroy the video filters2 */
1286     RemoveVideoFilters2( p_vout );
1287
1288     /* Destroy translation tables */
1289     p_vout->pf_end( p_vout );
1290
1291     /* Release the change lock */
1292     vlc_mutex_unlock( &p_vout->change_lock );
1293 }
1294
1295 /* following functions are local */
1296
1297 static int ReduceHeight( int i_ratio )
1298 {
1299     int i_dummy = VOUT_ASPECT_FACTOR;
1300     int i_pgcd  = 1;
1301
1302     if( !i_ratio )
1303     {
1304         return i_pgcd;
1305     }
1306
1307     /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1308     while( !(i_ratio & 1) && !(i_dummy & 1) )
1309     {
1310         i_ratio >>= 1;
1311         i_dummy >>= 1;
1312         i_pgcd  <<= 1;
1313     }
1314
1315     while( !(i_ratio % 3) && !(i_dummy % 3) )
1316     {
1317         i_ratio /= 3;
1318         i_dummy /= 3;
1319         i_pgcd  *= 3;
1320     }
1321
1322     while( !(i_ratio % 5) && !(i_dummy % 5) )
1323     {
1324         i_ratio /= 5;
1325         i_dummy /= 5;
1326         i_pgcd  *= 5;
1327     }
1328
1329     return i_pgcd;
1330 }
1331
1332 static void AspectRatio( int i_aspect, int *i_aspect_x, int *i_aspect_y )
1333 {
1334     unsigned int i_pgcd = ReduceHeight( i_aspect );
1335     *i_aspect_x = i_aspect / i_pgcd;
1336     *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
1337 }
1338
1339 /*****************************************************************************
1340  * BinaryLog: computes the base 2 log of a binary value
1341  *****************************************************************************
1342  * This functions is used by MaskToShift, to get a bit index from a binary
1343  * value.
1344  *****************************************************************************/
1345 static int BinaryLog( uint32_t i )
1346 {
1347     int i_log = 0;
1348
1349     if( i == 0 ) return -31337;
1350
1351     if( i & 0xffff0000 ) i_log += 16;
1352     if( i & 0xff00ff00 ) i_log += 8;
1353     if( i & 0xf0f0f0f0 ) i_log += 4;
1354     if( i & 0xcccccccc ) i_log += 2;
1355     if( i & 0xaaaaaaaa ) i_log += 1;
1356
1357     return i_log;
1358 }
1359
1360 /*****************************************************************************
1361  * MaskToShift: transform a color mask into right and left shifts
1362  *****************************************************************************
1363  * This function is used for obtaining color shifts from masks.
1364  *****************************************************************************/
1365 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1366 {
1367     uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
1368
1369     if( !i_mask )
1370     {
1371         *pi_left = *pi_right = 0;
1372         return;
1373     }
1374
1375     /* Get bits */
1376     i_low = i_high = i_mask;
1377
1378     i_low &= - (int32_t)i_low;          /* lower bit of the mask */
1379     i_high += i_low;                    /* higher bit of the mask */
1380
1381     /* Transform bits into an index. Also deal with i_high overflow, which
1382      * is faster than changing the BinaryLog code to handle 64 bit integers. */
1383     i_low =  BinaryLog (i_low);
1384     i_high = i_high ? BinaryLog (i_high) : 32;
1385
1386     /* Update pointers and return */
1387     *pi_left =   i_low;
1388     *pi_right = (8 - i_high + i_low);
1389 }
1390
1391 /*****************************************************************************
1392  * vout_VarCallback: generic callback for intf variables
1393  *****************************************************************************/
1394 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1395                       vlc_value_t oldval, vlc_value_t newval,
1396                       void *p_data )
1397 {
1398     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1399     vlc_value_t val;
1400     (void)psz_variable; (void)newval; (void)oldval; (void)p_data;
1401     val.b_bool = true;
1402     var_Set( p_vout, "intf-change", val );
1403     return VLC_SUCCESS;
1404 }
1405
1406 /*****************************************************************************
1407  * Helper thread for object variables callbacks.
1408  * Only used to avoid deadlocks when using the video embedded mode.
1409  *****************************************************************************/
1410 typedef struct suxor_thread_t
1411 {
1412     VLC_COMMON_MEMBERS
1413     input_thread_t *p_input;
1414
1415 } suxor_thread_t;
1416
1417 static void SuxorRestartVideoES( suxor_thread_t *p_this )
1418 {
1419     vlc_value_t val;
1420
1421     vlc_thread_ready( p_this );
1422
1423     /* Now restart current video stream */
1424     var_Get( p_this->p_input, "video-es", &val );
1425     if( val.i_int >= 0 )
1426     {
1427         vlc_value_t val_es;
1428         val_es.i_int = -VIDEO_ES;
1429         var_Set( p_this->p_input, "video-es", val_es );
1430         var_Set( p_this->p_input, "video-es", val );
1431     }
1432
1433     vlc_object_release( p_this->p_input );
1434
1435     vlc_object_release( p_this );
1436 }
1437
1438 /*****************************************************************************
1439  * object variables callbacks: a bunch of object variables are used by the
1440  * interfaces to interact with the vout.
1441  *****************************************************************************/
1442 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1443                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1444 {
1445     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1446     input_thread_t *p_input;
1447     vlc_value_t val;
1448
1449     char *psz_mode = newval.psz_string;
1450     char *psz_filter, *psz_deinterlace = NULL;
1451     (void)psz_cmd; (void)oldval; (void)p_data;
1452
1453     var_Get( p_vout, "vout-filter", &val );
1454     psz_filter = val.psz_string;
1455     if( psz_filter ) psz_deinterlace = strstr( psz_filter, "deinterlace" );
1456
1457     if( !psz_mode || !*psz_mode )
1458     {
1459         if( psz_deinterlace )
1460         {
1461             char *psz_src = psz_deinterlace + sizeof("deinterlace") - 1;
1462             if( psz_src[0] == ':' ) psz_src++;
1463             memmove( psz_deinterlace, psz_src, strlen(psz_src) + 1 );
1464         }
1465     }
1466     else if( !psz_deinterlace )
1467     {
1468         psz_filter = realloc( psz_filter, strlen( psz_filter ) +
1469                               sizeof(":deinterlace") );
1470         if( psz_filter && *psz_filter ) strcat( psz_filter, ":" );
1471         strcat( psz_filter, "deinterlace" );
1472     }
1473
1474     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1475                                                  FIND_PARENT );
1476     if( !p_input ) return VLC_EGENERIC;
1477
1478     if( psz_mode && *psz_mode )
1479     {
1480         /* Modify input as well because the vout might have to be restarted */
1481         val.psz_string = psz_mode;
1482         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1483         var_Set( p_input, "deinterlace-mode", val );
1484     }
1485     vlc_object_release( p_input );
1486
1487     val.b_bool = true;
1488     var_Set( p_vout, "intf-change", val );
1489
1490     val.psz_string = psz_filter;
1491     var_Set( p_vout, "vout-filter", val );
1492     free( psz_filter );
1493
1494     return VLC_SUCCESS;
1495 }
1496
1497 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1498                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1499 {
1500     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1501     input_thread_t *p_input;
1502     vlc_value_t val;
1503     (void)psz_cmd; (void)oldval; (void)p_data;
1504
1505     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1506                                                  FIND_PARENT );
1507     if (!p_input)
1508     {
1509         msg_Err( p_vout, "Input not found" );
1510         return( VLC_EGENERIC );
1511     }
1512
1513     val.b_bool = true;
1514     var_Set( p_vout, "intf-change", val );
1515
1516     /* Modify input as well because the vout might have to be restarted */
1517     val.psz_string = newval.psz_string;
1518     var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1519
1520     var_Set( p_input, "vout-filter", val );
1521
1522     /* Now restart current video stream */
1523     var_Get( p_input, "video-es", &val );
1524     if( val.i_int >= 0 )
1525     {
1526         suxor_thread_t *p_suxor =
1527             vlc_object_create( p_vout, sizeof(suxor_thread_t) );
1528         p_suxor->p_input = p_input;
1529         p_vout->b_filter_change = true;
1530         vlc_object_yield( p_input );
1531         vlc_thread_create( p_suxor, "suxor", SuxorRestartVideoES,
1532                            VLC_THREAD_PRIORITY_LOW, false );
1533     }
1534
1535     vlc_object_release( p_input );
1536
1537     return VLC_SUCCESS;
1538 }
1539
1540 /*****************************************************************************
1541  * Video Filter2 stuff
1542  *****************************************************************************/
1543 static int ParseVideoFilter2Chain( vout_thread_t *p_vout, char *psz_vfilters )
1544 {
1545     int i;
1546     for( i = 0; i < p_vout->i_vfilters_cfg; i++ )
1547     {
1548         struct config_chain_t *p_cfg =
1549             p_vout->p_vfilters_cfg[p_vout->i_vfilters_cfg];
1550         config_ChainDestroy( p_cfg );
1551         free( p_vout->psz_vfilters[p_vout->i_vfilters_cfg] );
1552         p_vout->psz_vfilters[p_vout->i_vfilters_cfg] = NULL;
1553     }
1554     p_vout->i_vfilters_cfg = 0;
1555     if( psz_vfilters && *psz_vfilters )
1556     {
1557         char *psz_parser = psz_vfilters;
1558
1559         while( psz_parser && *psz_parser )
1560         {
1561             psz_parser = config_ChainCreate(
1562                             &p_vout->psz_vfilters[p_vout->i_vfilters_cfg],
1563                             &p_vout->p_vfilters_cfg[p_vout->i_vfilters_cfg],
1564                             psz_parser );
1565             msg_Dbg( p_vout, "adding vfilter: %s",
1566                      p_vout->psz_vfilters[p_vout->i_vfilters_cfg] );
1567             p_vout->i_vfilters_cfg++;
1568             if( psz_parser && *psz_parser )
1569             {
1570                 if( p_vout->i_vfilters_cfg == MAX_VFILTERS )
1571                 {
1572                     msg_Warn( p_vout,
1573                   "maximum number of video filters reached. \"%s\" discarded",
1574                               psz_parser );
1575                     break;
1576                 }
1577             }
1578         }
1579     }
1580     return VLC_SUCCESS;
1581 }
1582
1583 static int VideoFilter2Callback( vlc_object_t *p_this, char const *psz_cmd,
1584                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1585 {
1586     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1587     (void)psz_cmd; (void)oldval; (void)p_data;
1588
1589     vlc_mutex_lock( &p_vout->vfilter_lock );
1590     ParseVideoFilter2Chain( p_vout, newval.psz_string );
1591     p_vout->b_vfilter_change = true;
1592     vlc_mutex_unlock( &p_vout->vfilter_lock );
1593
1594     return VLC_SUCCESS;
1595 }
1596
1597 static void RemoveVideoFilters2( vout_thread_t *p_vout )
1598 {
1599     int i;
1600     for( i = 0; i < p_vout->i_vfilters; i++ )
1601     {
1602         vlc_object_detach( p_vout->pp_vfilters[i] );
1603         if( p_vout->pp_vfilters[i]->p_module )
1604         {
1605             module_Unneed( p_vout->pp_vfilters[i],
1606                            p_vout->pp_vfilters[i]->p_module );
1607         }
1608
1609         free( p_vout->pp_vfilters[i]->p_owner );
1610         vlc_object_release( p_vout->pp_vfilters[i] );
1611     }
1612     p_vout->i_vfilters = 0;
1613 }
1614
1615 static void DisplayTitleOnOSD( vout_thread_t *p_vout )
1616 {
1617     input_thread_t *p_input;
1618     mtime_t i_now, i_stop;
1619
1620     p_input = (input_thread_t *)vlc_object_find( p_vout,
1621               VLC_OBJECT_INPUT, FIND_ANYWHERE );
1622     if( p_input )
1623     {
1624         i_now = mdate();
1625         i_stop = i_now + (mtime_t)(p_vout->i_title_timeout * 1000);
1626         char *psz_nowplaying =
1627             input_item_GetNowPlaying( input_GetItem( p_input ) );
1628         char *psz_artist = input_item_GetArtist( input_GetItem( p_input ) );
1629         char *psz_name = input_item_GetTitle( input_GetItem( p_input ) );
1630         if( EMPTY_STR( psz_name ) )
1631         {
1632             free( psz_name );
1633             psz_name = input_item_GetName( input_GetItem( p_input ) );
1634         }
1635         if( !EMPTY_STR( psz_nowplaying ) )
1636         {
1637             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1638                                    psz_nowplaying, NULL,
1639                                    p_vout->i_title_position,
1640                                    30 + p_vout->fmt_in.i_width
1641                                       - p_vout->fmt_in.i_visible_width
1642                                       - p_vout->fmt_in.i_x_offset,
1643                                    20 + p_vout->fmt_in.i_y_offset,
1644                                    i_now, i_stop );
1645         }
1646         else if( !EMPTY_STR( psz_artist ) )
1647         {
1648             char *psz_string = NULL;
1649             if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
1650             {
1651                 vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1652                                        psz_string, NULL,
1653                                        p_vout->i_title_position,
1654                                        30 + p_vout->fmt_in.i_width
1655                                           - p_vout->fmt_in.i_visible_width
1656                                           - p_vout->fmt_in.i_x_offset,
1657                                        20 + p_vout->fmt_in.i_y_offset,
1658                                        i_now, i_stop );
1659                 free( psz_string );
1660             }
1661         }
1662         else
1663         {
1664             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1665                                    psz_name, NULL,
1666                                    p_vout->i_title_position,
1667                                    30 + p_vout->fmt_in.i_width
1668                                       - p_vout->fmt_in.i_visible_width
1669                                       - p_vout->fmt_in.i_x_offset,
1670                                    20 + p_vout->fmt_in.i_y_offset,
1671                                    i_now, i_stop );
1672         }
1673         vlc_object_release( p_input );
1674         free( psz_artist );
1675         free( psz_name );
1676         free( psz_nowplaying );
1677     }
1678 }
1679