git.sesse.net Git - vlc/blob - src/video_output/video_output.c

   1 /*****************************************************************************
   2  * video_output.c : video output thread
   3  *
   4  * This module describes the programming interface for video output threads.
   5  * It includes functions allowing to open a new thread, send pictures to a
   6  * thread, and destroy a previously oppened video output thread.
   7  *****************************************************************************
   8  * Copyright (C) 2000-2007 the VideoLAN team
   9  * $Id$
  10  *
  11  * Authors: Vincent Seguin <seguin@via.ecp.fr>
  12  *          Gildas Bazin <gbazin@videolan.org>
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  27  *****************************************************************************/
  28
  29 /*****************************************************************************
  30  * Preamble
  31  *****************************************************************************/
  32 #ifdef HAVE_CONFIG_H
  33 # include "config.h"
  34 #endif
  35
  36 #include <vlc_common.h>
  37
  38 #include <stdlib.h>                                                /* free() */
  39 #include <string.h>
  40
  41
  42 #ifdef HAVE_SYS_TIMES_H
  43 #   include <sys/times.h>
  44 #endif
  45
  46 #include <vlc_vout.h>
  47 #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 /* Display media title in OSD */
  88 static void DisplayTitleOnOSD( vout_thread_t *p_vout );
  89
  90 /*****************************************************************************
  91  * Video Filter2 functions
  92  *****************************************************************************/
  93 static picture_t *video_new_buffer_filter( filter_t *p_filter )
  94 {
  95     picture_t *p_picture;
  96     vout_thread_t *p_vout = (vout_thread_t*)p_filter->p_owner;
  97
  98     p_picture = vout_CreatePicture( p_vout, 0, 0, 0 );
  99
 100     return p_picture;
 101 }
 102
 103 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
 104 {
 105     vout_DestroyPicture( (vout_thread_t*)p_filter->p_owner, p_pic );
 106 }
 107
 108 static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
 109 {
 110     p_filter->pf_vout_buffer_new = video_new_buffer_filter;
 111     p_filter->pf_vout_buffer_del = video_del_buffer_filter;
 112     p_filter->p_owner = p_data; /* p_vout */
 113     return VLC_SUCCESS;
 114 }
 115
 116 /*****************************************************************************
 117  * vout_Request: find a video output thread, create one, or destroy one.
 118  *****************************************************************************
 119  * This function looks for a video output thread matching the current
 120  * properties. If not found, it spawns a new one.
 121  *****************************************************************************/
 122 vout_thread_t *__vout_Request( vlc_object_t *p_this, vout_thread_t *p_vout,
 123                                video_format_t *p_fmt )
 124 {
 125     if( !p_fmt )
 126     {
 127         /* Reattach video output to playlist before bailing out */
 128         if( p_vout )
 129         {
 130             spu_Attach( p_vout->p_spu, p_this, false );
 131             vlc_object_detach( p_vout );
 132             vlc_object_attach( p_vout, p_this->p_libvlc );
 133         }
 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_yield( p_vout );
 141     }
 142     else
 143     {
 144         p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD );
 145
 146         if( !p_vout )
 147         {
 148             p_vout = vlc_object_find( p_this->p_libvlc,
 149                                       VLC_OBJECT_VOUT, FIND_CHILD );
 150             /* only first children of p_input for unused vout */
 151             if( p_vout && p_vout->p_parent != VLC_OBJECT(p_this->p_libvlc) )
 152             {
 153                 vlc_object_release( p_vout );
 154                 p_vout = NULL;
 155             }
 156             if( p_vout )
 157                 vlc_object_detach( p_vout );    /* Remove it from the GC */
 158         }
 159     }
 160
 161     /* If we now have a video output, check it has the right properties */
 162     if( p_vout )
 163     {
 164         char *psz_filter_chain;
 165         vlc_value_t val;
 166
 167         /* We don't directly check for the "vout-filter" variable for obvious
 168          * performance reasons. */
 169         if( p_vout->b_filter_change )
 170         {
 171             var_Get( p_vout, "vout-filter", &val );
 172             psz_filter_chain = val.psz_string;
 173
 174             if( psz_filter_chain && !*psz_filter_chain )
 175             {
 176                 free( psz_filter_chain );
 177                 psz_filter_chain = NULL;
 178             }
 179             if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
 180             {
 181                 free( p_vout->psz_filter_chain );
 182                 p_vout->psz_filter_chain = NULL;
 183             }
 184
 185             if( !psz_filter_chain && !p_vout->psz_filter_chain )
 186             {
 187                 p_vout->b_filter_change = false;
 188             }
 189
 190             free( psz_filter_chain );
 191         }
 192
 193         if( ( p_vout->fmt_render.i_width != p_fmt->i_width ) ||
 194             ( p_vout->fmt_render.i_height != p_fmt->i_height ) ||
 195             ( p_vout->fmt_render.i_aspect != p_fmt->i_aspect ) ||
 196             p_vout->b_filter_change )
 197         {
 198             /* We are not interested in this format, close this vout */
 199             vlc_object_release( p_vout );
 200             vlc_object_release( p_vout );
 201             p_vout = NULL;
 202         }
 203         else
 204         {
 205             /* This video output is cool! Hijack it. */
 206             spu_Attach( p_vout->p_spu, p_this, true );
 207             vlc_object_attach( p_vout, p_this );
 208             if( p_vout->b_title_show )
 209                 DisplayTitleOnOSD( p_vout );
 210             vlc_object_release( p_vout );
 211         }
 212     }
 213
 214     if( !p_vout )
 215     {
 216         msg_Dbg( p_this, "no usable vout present, spawning one" );
 217
 218         p_vout = vout_Create( p_this, p_fmt );
 219     }
 220
 221     return p_vout;
 222 }
 223
 224 /*****************************************************************************
 225  * vout_Create: creates a new video output thread
 226  *****************************************************************************
 227  * This function creates a new video output thread, and returns a pointer
 228  * to its description. On error, it returns NULL.
 229  *****************************************************************************/
 230 vout_thread_t * __vout_Create( vlc_object_t *p_parent, video_format_t *p_fmt )
 231 {
 232     vout_thread_t  * p_vout;                            /* thread descriptor */
 233     input_thread_t * p_input_thread;
 234     int              i_index;                               /* loop variable */
 235     vlc_value_t      val, text;
 236
 237     unsigned int i_width = p_fmt->i_width;
 238     unsigned int i_height = p_fmt->i_height;
 239     vlc_fourcc_t i_chroma = p_fmt->i_chroma;
 240     unsigned int i_aspect = p_fmt->i_aspect;
 241
 242     config_chain_t *p_cfg;
 243     char *psz_parser;
 244     char *psz_name;
 245
 246     /* Allocate descriptor */
 247     p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
 248     if( p_vout == NULL )
 249     {
 250         msg_Err( p_parent, "out of memory" );
 251         return NULL;
 252     }
 253
 254     /* Initialize pictures - translation tables and functions
 255      * will be initialized later in InitThread */
 256     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
 257     {
 258         p_vout->p_picture[i_index].pf_lock = NULL;
 259         p_vout->p_picture[i_index].pf_unlock = NULL;
 260         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 261         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 262         p_vout->p_picture[i_index].b_slow   = 0;
 263     }
 264
 265     /* No images in the heap */
 266     p_vout->i_heap_size = 0;
 267
 268     /* Initialize the rendering heap */
 269     I_RENDERPICTURES = 0;
 270
 271     vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
 272                  p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 273     p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
 274     p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
 275
 276     p_vout->render.i_width    = i_width;
 277     p_vout->render.i_height   = i_height;
 278     p_vout->render.i_chroma   = i_chroma;
 279     p_vout->render.i_aspect   = i_aspect;
 280
 281     p_vout->render.i_rmask    = 0;
 282     p_vout->render.i_gmask    = 0;
 283     p_vout->render.i_bmask    = 0;
 284
 285     p_vout->render.i_last_used_pic = -1;
 286     p_vout->render.b_allow_modify_pics = 1;
 287
 288     /* Zero the output heap */
 289     I_OUTPUTPICTURES = 0;
 290     p_vout->output.i_width    = 0;
 291     p_vout->output.i_height   = 0;
 292     p_vout->output.i_chroma   = 0;
 293     p_vout->output.i_aspect   = 0;
 294
 295     p_vout->output.i_rmask    = 0;
 296     p_vout->output.i_gmask    = 0;
 297     p_vout->output.i_bmask    = 0;
 298
 299     /* Initialize misc stuff */
 300     p_vout->i_changes    = 0;
 301     p_vout->f_gamma      = 0;
 302     p_vout->b_grayscale  = 0;
 303     p_vout->b_info       = 0;
 304     p_vout->b_interface  = 0;
 305     p_vout->b_scale      = 1;
 306     p_vout->b_fullscreen = 0;
 307     p_vout->i_alignment  = 0;
 308     p_vout->render_time  = 10;
 309     p_vout->c_fps_samples = 0;
 310     p_vout->b_filter_change = 0;
 311     p_vout->pf_control = 0;
 312     p_vout->p_parent_intf = 0;
 313     p_vout->i_par_num = p_vout->i_par_den = 1;
 314
 315     /* Initialize locks */
 316     vlc_mutex_init( &p_vout->picture_lock );
 317     vlc_mutex_init( &p_vout->change_lock );
 318     vlc_mutex_init( &p_vout->vfilter_lock );
 319
 320     /* Mouse coordinates */
 321     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 322     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 323     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 324     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 325     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 326
 327     /* Initialize subpicture unit */
 328     p_vout->p_spu = spu_Create( p_vout );
 329     spu_Attach( p_vout->p_spu, p_parent, true );
 330
 331     /* Attach the new object now so we can use var inheritance below */
 332     vlc_object_attach( p_vout, p_parent );
 333
 334     spu_Init( p_vout->p_spu );
 335
 336     /* Take care of some "interface/control" related initialisations */
 337     vout_IntfInit( p_vout );
 338
 339     /* If the parent is not a VOUT object, that means we are at the start of
 340      * the video output pipe */
 341     if( p_parent->i_object_type != VLC_OBJECT_VOUT )
 342     {
 343         /* Look for the default filter configuration */
 344         p_vout->psz_filter_chain =
 345             var_CreateGetStringCommand( p_vout, "vout-filter" );
 346
 347         /* Apply video filter2 objects on the first vout */
 348         p_vout->psz_vf2 =
 349             var_CreateGetStringCommand( p_vout, "video-filter" );
 350     }
 351     else
 352     {
 353         /* continue the parent's filter chain */
 354         char *psz_tmp;
 355
 356         /* Ugly hack to jump to our configuration chain */
 357         p_vout->psz_filter_chain
 358             = ((vout_thread_t *)p_parent)->psz_filter_chain;
 359         p_vout->psz_filter_chain
 360             = config_ChainCreate( &psz_tmp, &p_cfg, p_vout->psz_filter_chain );
 361         config_ChainDestroy( p_cfg );
 362         free( psz_tmp );
 363
 364         /* Create a video filter2 var ... but don't inherit values */
 365         var_Create( p_vout, "video-filter",
 366                     VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 367         p_vout->psz_vf2 = var_GetString( p_vout, "video-filter" );
 368     }
 369
 370     var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
 371     p_vout->p_vf2_chain = filter_chain_New( p_vout, "video filter2",
 372         false, video_filter_buffer_allocation_init, NULL, p_vout );
 373
 374     /* Choose the video output module */
 375     if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 376     {
 377         var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 378         var_Get( p_vout, "vout", &val );
 379         psz_parser = val.psz_string;
 380     }
 381     else
 382     {
 383         psz_parser = strdup( p_vout->psz_filter_chain );
 384     }
 385
 386     /* Create the vout thread */
 387     config_ChainCreate( &psz_name, &p_cfg, psz_parser );
 388     free( psz_parser );
 389     p_vout->p_cfg = p_cfg;
 390     p_vout->p_module = module_Need( p_vout,
 391         ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
 392         "video filter" : "video output", psz_name, p_vout->psz_filter_chain && *p_vout->psz_filter_chain );
 393     free( psz_name );
 394
 395     if( p_vout->p_module == NULL )
 396     {
 397         msg_Err( p_vout, "no suitable vout module" );
 398         vlc_object_detach( p_vout );
 399         vlc_object_release( p_vout );
 400         return NULL;
 401     }
 402
 403     /* Create a few object variables for interface interaction */
 404     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
 405     text.psz_string = _("Deinterlace");
 406     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
 407     val.psz_string = (char *)""; text.psz_string = _("Disable");
 408     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 409     val.psz_string = (char *)"discard"; text.psz_string = _("Discard");
 410     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 411     val.psz_string = (char *)"blend"; text.psz_string = _("Blend");
 412     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 413     val.psz_string = (char *)"mean"; text.psz_string = _("Mean");
 414     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 415     val.psz_string = (char *)"bob"; text.psz_string = _("Bob");
 416     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 417     val.psz_string = (char *)"linear"; text.psz_string = _("Linear");
 418     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 419     val.psz_string = (char *)"x"; text.psz_string = (char *)"X";
 420     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 421
 422     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 423     {
 424         var_Set( p_vout, "deinterlace", val );
 425         free( val.psz_string );
 426     }
 427     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 428
 429     var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 430     text.psz_string = _("Filters");
 431     var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
 432     var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
 433
 434     /* Calculate delay created by internal caching */
 435     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 436                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 437     if( p_input_thread )
 438     {
 439         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 440         vlc_object_release( p_input_thread );
 441     }
 442     else
 443     {
 444         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 445     }
 446
 447     if( vlc_thread_create( p_vout, "video output", RunThread,
 448                            VLC_THREAD_PRIORITY_OUTPUT, true ) )
 449     {
 450         msg_Err( p_vout, "out of memory" );
 451         module_Unneed( p_vout, p_vout->p_module );
 452         vlc_object_release( p_vout );
 453         return NULL;
 454     }
 455
 456     if( p_vout->b_error )
 457     {
 458         msg_Err( p_vout, "video output creation failed" );
 459
 460         /* Make sure the thread is destroyed */
 461         vlc_object_release( p_vout );
 462         return NULL;
 463     }
 464
 465     vlc_object_set_destructor( p_vout, vout_Destructor );
 466
 467     return p_vout;
 468 }
 469
 470 static void vout_Destructor( vlc_object_t * p_this )
 471 {
 472     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 473
 474     /* Destroy the locks */
 475     vlc_mutex_destroy( &p_vout->picture_lock );
 476     vlc_mutex_destroy( &p_vout->change_lock );
 477     vlc_mutex_destroy( &p_vout->vfilter_lock );
 478
 479     /* Release the module */
 480     if( p_vout->p_module )
 481     {
 482         module_Unneed( p_vout, p_vout->p_module );
 483     }
 484
 485     free( p_vout->psz_filter_chain );
 486
 487     config_ChainDestroy( p_vout->p_cfg );
 488
 489 #ifndef __APPLE__
 490     vout_thread_t *p_another_vout;
 491
 492     /* This is a dirty hack mostly for Linux, where there is no way to get the
 493      * GUI back if you closed it while playing video. This is solved in
 494      * Mac OS X, where we have this novelty called menubar, that will always
 495      * allow you access to the applications main functionality. They should try
 496      * that on linux sometime. */
 497     p_another_vout = vlc_object_find( p_this->p_libvlc,
 498                                       VLC_OBJECT_VOUT, FIND_ANYWHERE );
 499     if( p_another_vout == NULL )
 500         var_SetBool( p_this->p_libvlc, "intf-show", true );
 501     else
 502         vlc_object_release( p_another_vout );
 503 #endif
 504 }
 505
 506 /*****************************************************************************
 507  * InitThread: initialize video output thread
 508  *****************************************************************************
 509  * This function is called from RunThread and performs the second step of the
 510  * initialization. It returns 0 on success. Note that the thread's flag are not
 511  * modified inside this function.
 512  *****************************************************************************/
 513 static picture_t *get_pic( filter_t *p_filter )
 514 {
 515     picture_t *p_pic = (picture_t *)p_filter->p_owner;
 516     p_filter->p_owner = NULL;
 517     return p_pic;
 518 }
 519
 520 static int InitThread( vout_thread_t *p_vout )
 521 {
 522     int i, i_aspect_x, i_aspect_y;
 523
 524     vlc_mutex_lock( &p_vout->change_lock );
 525
 526 #ifdef STATS
 527     p_vout->c_loops = 0;
 528 #endif
 529
 530     /* Initialize output method, it allocates direct buffers for us */
 531     if( p_vout->pf_init( p_vout ) )
 532     {
 533         vlc_mutex_unlock( &p_vout->change_lock );
 534         return VLC_EGENERIC;
 535     }
 536
 537     if( !I_OUTPUTPICTURES )
 538     {
 539         msg_Err( p_vout, "plugin was unable to allocate at least "
 540                          "one direct buffer" );
 541         p_vout->pf_end( p_vout );
 542         vlc_mutex_unlock( &p_vout->change_lock );
 543         return VLC_EGENERIC;
 544     }
 545
 546     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 547     {
 548         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 549                          "our internal buffers must have overflown." );
 550         p_vout->pf_end( p_vout );
 551         vlc_mutex_unlock( &p_vout->change_lock );
 552         return VLC_EGENERIC;
 553     }
 554
 555     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 556
 557     AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );
 558
 559     msg_Dbg( p_vout, "picture in %ix%i (%i,%i,%ix%i), "
 560              "chroma %4.4s, ar %i:%i, sar %i:%i",
 561              p_vout->fmt_render.i_width, p_vout->fmt_render.i_height,
 562              p_vout->fmt_render.i_x_offset, p_vout->fmt_render.i_y_offset,
 563              p_vout->fmt_render.i_visible_width,
 564              p_vout->fmt_render.i_visible_height,
 565              (char*)&p_vout->fmt_render.i_chroma,
 566              i_aspect_x, i_aspect_y,
 567              p_vout->fmt_render.i_sar_num, p_vout->fmt_render.i_sar_den );
 568
 569     AspectRatio( p_vout->fmt_in.i_aspect, &i_aspect_x, &i_aspect_y );
 570
 571     msg_Dbg( p_vout, "picture user %ix%i (%i,%i,%ix%i), "
 572              "chroma %4.4s, ar %i:%i, sar %i:%i",
 573              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 574              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 575              p_vout->fmt_in.i_visible_width,
 576              p_vout->fmt_in.i_visible_height,
 577              (char*)&p_vout->fmt_in.i_chroma,
 578              i_aspect_x, i_aspect_y,
 579              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 580
 581     if( !p_vout->fmt_out.i_width || !p_vout->fmt_out.i_height )
 582     {
 583         p_vout->fmt_out.i_width = p_vout->fmt_out.i_visible_width =
 584             p_vout->output.i_width;
 585         p_vout->fmt_out.i_height = p_vout->fmt_out.i_visible_height =
 586             p_vout->output.i_height;
 587         p_vout->fmt_out.i_x_offset =  p_vout->fmt_out.i_y_offset = 0;
 588
 589         p_vout->fmt_out.i_aspect = p_vout->output.i_aspect;
 590         p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 591     }
 592     if( !p_vout->fmt_out.i_sar_num || !p_vout->fmt_out.i_sar_num )
 593     {
 594         p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_aspect *
 595             p_vout->fmt_out.i_height;
 596         p_vout->fmt_out.i_sar_den = VOUT_ASPECT_FACTOR *
 597             p_vout->fmt_out.i_width;
 598     }
 599
 600     vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
 601                  p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
 602
 603     AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
 604
 605     msg_Dbg( p_vout, "picture out %ix%i (%i,%i,%ix%i), "
 606              "chroma %4.4s, ar %i:%i, sar %i:%i",
 607              p_vout->fmt_out.i_width, p_vout->fmt_out.i_height,
 608              p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
 609              p_vout->fmt_out.i_visible_width,
 610              p_vout->fmt_out.i_visible_height,
 611              (char*)&p_vout->fmt_out.i_chroma,
 612              i_aspect_x, i_aspect_y,
 613              p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den );
 614
 615     /* Calculate shifts from system-updated masks */
 616     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 617                  p_vout->output.i_rmask );
 618     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 619                  p_vout->output.i_gmask );
 620     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 621                  p_vout->output.i_bmask );
 622
 623     /* Check whether we managed to create direct buffers similar to
 624      * the render buffers, ie same size and chroma */
 625     if( ( p_vout->output.i_width == p_vout->render.i_width )
 626      && ( p_vout->output.i_height == p_vout->render.i_height )
 627      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 628     {
 629         /* Cool ! We have direct buffers, we can ask the decoder to
 630          * directly decode into them ! Map the first render buffers to
 631          * the first direct buffers, but keep the first direct buffer
 632          * for memcpy operations */
 633         p_vout->b_direct = 1;
 634
 635         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 636         {
 637             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 638                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 639                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 640             {
 641                 /* We have enough direct buffers so there's no need to
 642                  * try to use system memory buffers. */
 643                 break;
 644             }
 645             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 646             I_RENDERPICTURES++;
 647         }
 648
 649         msg_Dbg( p_vout, "direct render, mapping "
 650                  "render pictures 0-%i to system pictures 1-%i",
 651                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 652     }
 653     else
 654     {
 655         /* Rats... Something is wrong here, we could not find an output
 656          * plugin able to directly render what we decode. See if we can
 657          * find a chroma plugin to do the conversion */
 658         p_vout->b_direct = 0;
 659
 660         /* Choose the best module */
 661         p_vout->p_chroma = vlc_object_create( p_vout, VLC_OBJECT_FILTER );
 662         filter_t *p_chroma = p_vout->p_chroma;
 663         vlc_object_attach( p_chroma, p_vout );
 664         /* TODO: Set the fmt_in and fmt_out stuff here */
 665         p_chroma->fmt_in.video = p_vout->fmt_render;
 666         p_chroma->fmt_out.video = p_vout->fmt_out;
 667
 668         /* TODO: put in a function */
 669         p_chroma->fmt_out.video.i_rmask = p_vout->output.i_rmask;
 670         p_chroma->fmt_out.video.i_gmask = p_vout->output.i_gmask;
 671         p_chroma->fmt_out.video.i_bmask = p_vout->output.i_bmask;
 672         p_chroma->fmt_out.video.i_rrshift = p_vout->output.i_rrshift;
 673         p_chroma->fmt_out.video.i_lrshift = p_vout->output.i_lrshift;
 674         p_chroma->fmt_out.video.i_rgshift = p_vout->output.i_rgshift;
 675         p_chroma->fmt_out.video.i_lgshift = p_vout->output.i_lgshift;
 676         p_chroma->fmt_out.video.i_rbshift = p_vout->output.i_rbshift;
 677         p_chroma->fmt_out.video.i_lbshift = p_vout->output.i_lbshift;
 678         msg_Err( p_vout, "HOLA! %4.4s", (char*)&p_chroma->fmt_in.video.i_chroma );
 679         msg_Err( p_vout, "HOLA! %4.4s", (char*)&p_chroma->fmt_out.video.i_chroma );
 680         p_chroma->p_module = module_Need( p_chroma, "video filter2", NULL, 0 );
 681
 682         if( p_chroma->p_module == NULL )
 683         {
 684             msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
 685                      (char*)&p_vout->render.i_chroma,
 686                      (char*)&p_vout->output.i_chroma );
 687             vlc_object_detach( p_vout->p_chroma );
 688             p_vout->p_chroma = NULL;
 689             p_vout->pf_end( p_vout );
 690             vlc_mutex_unlock( &p_vout->change_lock );
 691             return VLC_EGENERIC;
 692         }
 693         p_chroma->pf_vout_buffer_new = get_pic;
 694
 695         msg_Dbg( p_vout, "indirect render, mapping "
 696                  "render pictures 0-%i to system pictures %i-%i",
 697                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 698                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 699
 700         /* Append render buffers after the direct buffers */
 701         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 702         {
 703             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 704             I_RENDERPICTURES++;
 705
 706             /* Check if we have enough render pictures */
 707             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 708                 break;
 709         }
 710     }
 711
 712     /* Link pictures back to their heap */
 713     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 714     {
 715         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 716     }
 717
 718     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 719     {
 720         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 721     }
 722
 723 /* XXX XXX mark thread ready */
 724     return VLC_SUCCESS;
 725 }
 726
 727 /*****************************************************************************
 728  * RunThread: video output thread
 729  *****************************************************************************
 730  * Video output thread. This function does only returns when the thread is
 731  * terminated. It handles the pictures arriving in the video heap and the
 732  * display device events.
 733  *****************************************************************************/
 734 static void RunThread( vout_thread_t *p_vout)
 735 {
 736     int             i_index;                                /* index in heap */
 737     int             i_idle_loops = 0;  /* loops without displaying a picture */
 738     mtime_t         current_date;                            /* current date */
 739     mtime_t         display_date;                            /* display date */
 740
 741     picture_t *     p_picture;                            /* picture pointer */
 742     picture_t *     p_last_picture = NULL;                   /* last picture */
 743     picture_t *     p_directbuffer;              /* direct buffer to display */
 744
 745     subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
 746
 747     input_thread_t *p_input = NULL ;           /* Parent input, if it exists */
 748
 749     vlc_value_t     val;
 750     bool      b_drop_late;
 751
 752     int             i_displayed = 0, i_lost = 0, i_loops = 0;
 753
 754     /*
 755      * Initialize thread
 756      */
 757     p_vout->b_error = InitThread( p_vout );
 758
 759     var_Create( p_vout, "drop-late-frames", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 760     var_Get( p_vout, "drop-late-frames", &val );
 761     b_drop_late = val.b_bool;
 762
 763     /* signal the creation of the vout */
 764     vlc_thread_ready( p_vout );
 765
 766     if( p_vout->b_error )
 767         return;
 768
 769     vlc_object_lock( p_vout );
 770
 771     if( p_vout->b_title_show )
 772         DisplayTitleOnOSD( p_vout );
 773
 774     /*
 775      * Main loop - it is not executed if an error occurred during
 776      * initialization
 777      */
 778     while( (vlc_object_alive( p_vout )) && (!p_vout->b_error) )
 779     {
 780         /* Initialize loop variables */
 781         p_picture = NULL;
 782         display_date = 0;
 783         current_date = mdate();
 784
 785         i_loops++;
 786             if( !p_input )
 787             {
 788                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 789                                            FIND_PARENT );
 790             }
 791             if( p_input )
 792             {
 793                 vlc_mutex_lock( &p_input->p->counters.counters_lock );
 794                 stats_UpdateInteger( p_vout, p_input->p->counters.p_lost_pictures,
 795                                      i_lost , NULL);
 796                 stats_UpdateInteger( p_vout,
 797                                      p_input->p->counters.p_displayed_pictures,
 798                                      i_displayed , NULL);
 799                 i_displayed = i_lost = 0;
 800                 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 801                 vlc_object_release( p_input );
 802                 p_input = NULL;
 803             }
 804 #if 0
 805         p_vout->c_loops++;
 806         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 807         {
 808             msg_Dbg( p_vout, "picture heap: %d/%d",
 809                      I_RENDERPICTURES, p_vout->i_heap_size );
 810         }
 811 #endif
 812
 813         /*
 814          * Find the picture to display (the one with the earliest date).
 815          * This operation does not need lock, since only READY_PICTUREs
 816          * are handled. */
 817         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 818         {
 819             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 820                 && ( (p_picture == NULL) ||
 821                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 822             {
 823                 p_picture = PP_RENDERPICTURE[i_index];
 824                 display_date = p_picture->date;
 825             }
 826         }
 827
 828         if( p_picture )
 829         {
 830             /* If we met the last picture, parse again to see whether there is
 831              * a more appropriate one. */
 832             if( p_picture == p_last_picture )
 833             {
 834                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 835                 {
 836                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 837                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 838                         && ((p_picture == p_last_picture) ||
 839                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 840                     {
 841                         p_picture = PP_RENDERPICTURE[i_index];
 842                         display_date = p_picture->date;
 843                     }
 844                 }
 845             }
 846
 847             /* If we found better than the last picture, destroy it */
 848             if( p_last_picture && p_picture != p_last_picture )
 849             {
 850                 vlc_mutex_lock( &p_vout->picture_lock );
 851                 if( p_last_picture->i_refcount )
 852                 {
 853                     p_last_picture->i_status = DISPLAYED_PICTURE;
 854                 }
 855                 else
 856                 {
 857                     p_last_picture->i_status = DESTROYED_PICTURE;
 858                     p_vout->i_heap_size--;
 859                 }
 860                 vlc_mutex_unlock( &p_vout->picture_lock );
 861                 p_last_picture = NULL;
 862             }
 863
 864             /* Compute FPS rate */
 865             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 866                 = display_date;
 867
 868             if( !p_picture->b_force &&
 869                 p_picture != p_last_picture &&
 870                 display_date < current_date + p_vout->render_time &&
 871                 b_drop_late )
 872             {
 873                 /* Picture is late: it will be destroyed and the thread
 874                  * will directly choose the next picture */
 875                 vlc_mutex_lock( &p_vout->picture_lock );
 876                 if( p_picture->i_refcount )
 877                 {
 878                     /* Pretend we displayed the picture, but don't destroy
 879                      * it since the decoder might still need it. */
 880                     p_picture->i_status = DISPLAYED_PICTURE;
 881                 }
 882                 else
 883                 {
 884                     /* Destroy the picture without displaying it */
 885                     p_picture->i_status = DESTROYED_PICTURE;
 886                     p_vout->i_heap_size--;
 887                 }
 888                 msg_Warn( p_vout, "late picture skipped (%"PRId64")",
 889                                   current_date - display_date );
 890                 i_lost++;
 891                 vlc_mutex_unlock( &p_vout->picture_lock );
 892
 893                 continue;
 894             }
 895
 896             if( display_date >
 897                 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
 898             {
 899                 /* Picture is waaay too early: it will be destroyed */
 900                 vlc_mutex_lock( &p_vout->picture_lock );
 901                 if( p_picture->i_refcount )
 902                 {
 903                     /* Pretend we displayed the picture, but don't destroy
 904                      * it since the decoder might still need it. */
 905                     p_picture->i_status = DISPLAYED_PICTURE;
 906                 }
 907                 else
 908                 {
 909                     /* Destroy the picture without displaying it */
 910                     p_picture->i_status = DESTROYED_PICTURE;
 911                     p_vout->i_heap_size--;
 912                 }
 913                 i_lost++;
 914                 msg_Warn( p_vout, "vout warning: early picture skipped "
 915                           "(%"PRId64")", display_date - current_date
 916                           - p_vout->i_pts_delay );
 917                 vlc_mutex_unlock( &p_vout->picture_lock );
 918
 919                 continue;
 920             }
 921
 922             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 923             {
 924                 /* A picture is ready to be rendered, but its rendering date
 925                  * is far from the current one so the thread will perform an
 926                  * empty loop as if no picture were found. The picture state
 927                  * is unchanged */
 928                 p_picture    = NULL;
 929                 display_date = 0;
 930             }
 931             else if( p_picture == p_last_picture )
 932             {
 933                 /* We are asked to repeat the previous picture, but we first
 934                  * wait for a couple of idle loops */
 935                 if( i_idle_loops < 4 )
 936                 {
 937                     p_picture    = NULL;
 938                     display_date = 0;
 939                 }
 940                 else
 941                 {
 942                     /* We set the display date to something high, otherwise
 943                      * we'll have lots of problems with late pictures */
 944                     display_date = current_date + p_vout->render_time;
 945                 }
 946             }
 947         }
 948
 949         if( p_picture == NULL )
 950         {
 951             i_idle_loops++;
 952         }
 953
 954         /* Video Filter2 stuff */
 955         if( p_vout->psz_vf2 )
 956         {
 957             es_format_t fmt;
 958
 959             vlc_mutex_lock( &p_vout->vfilter_lock );
 960
 961             es_format_Init( &fmt, VIDEO_ES, p_vout->fmt_render.i_chroma );
 962             fmt.video = p_vout->fmt_render;
 963             filter_chain_Reset( p_vout->p_vf2_chain, &fmt, &fmt );
 964
 965             if( filter_chain_AppendFromString( p_vout->p_vf2_chain,
 966                                                p_vout->psz_vf2 ) < 0 )
 967                 msg_Err( p_vout, "Video filter chain creation failed" );
 968
 969             else
 970             {
 971                 free( p_vout->psz_vf2 );
 972                 p_vout->psz_vf2 = NULL;
 973             }
 974             vlc_mutex_unlock( &p_vout->vfilter_lock );
 975         }
 976
 977         if( p_picture )
 978         {
 979             p_picture = filter_chain_VideoFilter( p_vout->p_vf2_chain,
 980                                                   p_picture );
 981         }
 982
 983         if( p_picture && p_vout->b_snapshot )
 984         {
 985             p_vout->b_snapshot = false;
 986             vout_Snapshot( p_vout, p_picture );
 987         }
 988
 989         /*
 990          * Check for subpictures to display
 991          */
 992         if( display_date > 0 )
 993         {
 994             if( !p_input )
 995             {
 996                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 997                                            FIND_PARENT );
 998             }
 999             p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date,
1000             p_input ? var_GetBool( p_input, "state" ) == PAUSE_S : false );
1001             if( p_input )
1002                 vlc_object_release( p_input );
1003             p_input = NULL;
1004         }
1005
1006         /*
1007          * Perform rendering
1008          */
1009         i_displayed++;
1010         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
1011
1012         /*
1013          * Call the plugin-specific rendering method if there is one
1014          */
1015         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
1016         {
1017             /* Render the direct buffer returned by vout_RenderPicture */
1018             p_vout->pf_render( p_vout, p_directbuffer );
1019         }
1020
1021         /*
1022          * Sleep, wake up
1023          */
1024         if( display_date != 0 && p_directbuffer != NULL )
1025         {
1026             mtime_t current_render_time = mdate() - current_date;
1027             /* if render time is very large we don't include it in the mean */
1028             if( current_render_time < p_vout->render_time +
1029                 VOUT_DISPLAY_DELAY )
1030             {
1031                 /* Store render time using a sliding mean weighting to
1032                  * current value in a 3 to 1 ratio*/
1033                 p_vout->render_time *= 3;
1034                 p_vout->render_time += current_render_time;
1035                 p_vout->render_time >>= 2;
1036             }
1037         }
1038
1039         /* Give back change lock */
1040         vlc_mutex_unlock( &p_vout->change_lock );
1041
1042         vlc_object_unlock( p_vout );
1043
1044         /* Sleep a while or until a given date */
1045         if( display_date != 0 )
1046         {
1047             /* If there are filters in the chain, better give them the picture
1048              * in advance */
1049             if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
1050             {
1051                 mwait( display_date - VOUT_MWAIT_TOLERANCE );
1052             }
1053         }
1054         else
1055         {
1056             msleep( VOUT_IDLE_SLEEP );
1057         }
1058
1059         /* On awakening, take back lock and send immediately picture
1060          * to display. */
1061         vlc_object_lock( p_vout );
1062         /* Note: vlc_object_alive() could be false here, and we
1063          * could be dead */
1064         vlc_mutex_lock( &p_vout->change_lock );
1065
1066         /*
1067          * Display the previously rendered picture
1068          */
1069         if( p_picture != NULL && p_directbuffer != NULL )
1070         {
1071             /* Display the direct buffer returned by vout_RenderPicture */
1072             if( p_vout->pf_display )
1073             {
1074                 p_vout->pf_display( p_vout, p_directbuffer );
1075             }
1076
1077             /* Tell the vout this was the last picture and that it does not
1078              * need to be forced anymore. */
1079             p_last_picture = p_picture;
1080             p_last_picture->b_force = 0;
1081         }
1082
1083         if( p_picture != NULL )
1084         {
1085             /* Reinitialize idle loop count */
1086             i_idle_loops = 0;
1087         }
1088
1089         /*
1090          * Check events and manage thread
1091          */
1092         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
1093         {
1094             /* A fatal error occurred, and the thread must terminate
1095              * immediately, without displaying anything - setting b_error to 1
1096              * causes the immediate end of the main while() loop. */
1097             p_vout->b_error = 1;
1098         }
1099
1100         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
1101         {
1102             /* this must only happen when the vout plugin is incapable of
1103              * rescaling the picture itself. In this case we need to destroy
1104              * the current picture buffers and recreate new ones with the right
1105              * dimensions */
1106             int i;
1107
1108             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
1109
1110             p_vout->pf_end( p_vout );
1111             for( i = 0; i < I_OUTPUTPICTURES; i++ )
1112                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
1113
1114             I_OUTPUTPICTURES = 0;
1115             if( p_vout->pf_init( p_vout ) )
1116             {
1117                 msg_Err( p_vout, "cannot resize display" );
1118                 /* FIXME: pf_end will be called again in EndThread() */
1119                 p_vout->b_error = 1;
1120             }
1121
1122             /* Need to reinitialise the chroma plugin */
1123             if( p_vout->p_chroma->p_module )
1124             {
1125                 if( p_vout->p_chroma->p_module->pf_deactivate )
1126                     p_vout->p_chroma->p_module->pf_deactivate( VLC_OBJECT(p_vout->p_chroma) );
1127                 p_vout->p_chroma->p_module->pf_activate( VLC_OBJECT(p_vout->p_chroma) );
1128             }
1129         }
1130
1131         if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1132         {
1133             /* This happens when the picture buffers need to be recreated.
1134              * This is useful on multimonitor displays for instance.
1135              *
1136              * Warning: This only works when the vout creates only 1 picture
1137              * buffer!! */
1138             p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1139
1140             if( !p_vout->b_direct )
1141             {
1142                 module_Unneed( p_vout->p_chroma, p_vout->p_chroma->p_module );
1143                 p_vout->p_chroma = NULL;
1144             }
1145
1146             vlc_mutex_lock( &p_vout->picture_lock );
1147
1148             p_vout->pf_end( p_vout );
1149
1150             I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1151
1152             p_vout->b_error = InitThread( p_vout );
1153
1154             vlc_mutex_unlock( &p_vout->picture_lock );
1155         }
1156     }
1157
1158
1159     if( p_input )
1160     {
1161         vlc_object_release( p_input );
1162     }
1163
1164     /*
1165      * Error loop - wait until the thread destruction is requested
1166      */
1167     if( p_vout->b_error )
1168     {
1169         ErrorThread( p_vout );
1170     }
1171
1172     /* End of thread */
1173     EndThread( p_vout );
1174     vlc_object_unlock( p_vout );
1175 }
1176
1177 /*****************************************************************************
1178  * ErrorThread: RunThread() error loop
1179  *****************************************************************************
1180  * This function is called when an error occurred during thread main's loop.
1181  * The thread can still receive feed, but must be ready to terminate as soon
1182  * as possible.
1183  *****************************************************************************/
1184 static void ErrorThread( vout_thread_t *p_vout )
1185 {
1186     /* Wait until a `die' order */
1187     while( !p_vout->b_die )
1188     {
1189         /* Sleep a while */
1190         msleep( VOUT_IDLE_SLEEP );
1191     }
1192 }
1193
1194 /*****************************************************************************
1195  * EndThread: thread destruction
1196  *****************************************************************************
1197  * This function is called when the thread ends after a sucessful
1198  * initialization. It frees all resources allocated by InitThread.
1199  *****************************************************************************/
1200 static void EndThread( vout_thread_t *p_vout )
1201 {
1202     int     i_index;                                        /* index in heap */
1203
1204 #ifdef STATS
1205     {
1206         struct tms cpu_usage;
1207         times( &cpu_usage );
1208
1209         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1210                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1211     }
1212 #endif
1213
1214     if( !p_vout->b_direct )
1215     {
1216         module_Unneed( p_vout->p_chroma, p_vout->p_chroma->p_module );
1217         p_vout->p_chroma->p_module = NULL;
1218     }
1219
1220     /* Destroy all remaining pictures */
1221     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1222     {
1223         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1224         {
1225             free( p_vout->p_picture[i_index].p_data_orig );
1226         }
1227     }
1228
1229     /* Destroy subpicture unit */
1230     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), false );
1231     spu_Destroy( p_vout->p_spu );
1232
1233     /* Destroy the video filters2 */
1234     filter_chain_Delete( p_vout->p_vf2_chain );
1235
1236     /* Destroy translation tables */
1237     p_vout->pf_end( p_vout );
1238
1239     /* Release the change lock */
1240     vlc_mutex_unlock( &p_vout->change_lock );
1241 }
1242
1243 /* following functions are local */
1244
1245 static int ReduceHeight( int i_ratio )
1246 {
1247     int i_dummy = VOUT_ASPECT_FACTOR;
1248     int i_pgcd  = 1;
1249
1250     if( !i_ratio )
1251     {
1252         return i_pgcd;
1253     }
1254
1255     /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1256     while( !(i_ratio & 1) && !(i_dummy & 1) )
1257     {
1258         i_ratio >>= 1;
1259         i_dummy >>= 1;
1260         i_pgcd  <<= 1;
1261     }
1262
1263     while( !(i_ratio % 3) && !(i_dummy % 3) )
1264     {
1265         i_ratio /= 3;
1266         i_dummy /= 3;
1267         i_pgcd  *= 3;
1268     }
1269
1270     while( !(i_ratio % 5) && !(i_dummy % 5) )
1271     {
1272         i_ratio /= 5;
1273         i_dummy /= 5;
1274         i_pgcd  *= 5;
1275     }
1276
1277     return i_pgcd;
1278 }
1279
1280 static void AspectRatio( int i_aspect, int *i_aspect_x, int *i_aspect_y )
1281 {
1282     unsigned int i_pgcd = ReduceHeight( i_aspect );
1283     *i_aspect_x = i_aspect / i_pgcd;
1284     *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
1285 }
1286
1287 /*****************************************************************************
1288  * BinaryLog: computes the base 2 log of a binary value
1289  *****************************************************************************
1290  * This functions is used by MaskToShift, to get a bit index from a binary
1291  * value.
1292  *****************************************************************************/
1293 static int BinaryLog( uint32_t i )
1294 {
1295     int i_log = 0;
1296
1297     if( i == 0 ) return -31337;
1298
1299     if( i & 0xffff0000 ) i_log += 16;
1300     if( i & 0xff00ff00 ) i_log += 8;
1301     if( i & 0xf0f0f0f0 ) i_log += 4;
1302     if( i & 0xcccccccc ) i_log += 2;
1303     if( i & 0xaaaaaaaa ) i_log += 1;
1304
1305     return i_log;
1306 }
1307
1308 /*****************************************************************************
1309  * MaskToShift: transform a color mask into right and left shifts
1310  *****************************************************************************
1311  * This function is used for obtaining color shifts from masks.
1312  *****************************************************************************/
1313 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1314 {
1315     uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
1316
1317     if( !i_mask )
1318     {
1319         *pi_left = *pi_right = 0;
1320         return;
1321     }
1322
1323     /* Get bits */
1324     i_low = i_high = i_mask;
1325
1326     i_low &= - (int32_t)i_low;          /* lower bit of the mask */
1327     i_high += i_low;                    /* higher bit of the mask */
1328
1329     /* Transform bits into an index. Also deal with i_high overflow, which
1330      * is faster than changing the BinaryLog code to handle 64 bit integers. */
1331     i_low =  BinaryLog (i_low);
1332     i_high = i_high ? BinaryLog (i_high) : 32;
1333
1334     /* Update pointers and return */
1335     *pi_left =   i_low;
1336     *pi_right = (8 - i_high + i_low);
1337 }
1338
1339 /*****************************************************************************
1340  * vout_VarCallback: generic callback for intf variables
1341  *****************************************************************************/
1342 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1343                       vlc_value_t oldval, vlc_value_t newval,
1344                       void *p_data )
1345 {
1346     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1347     vlc_value_t val;
1348     (void)psz_variable; (void)newval; (void)oldval; (void)p_data;
1349     val.b_bool = true;
1350     var_Set( p_vout, "intf-change", val );
1351     return VLC_SUCCESS;
1352 }
1353
1354 /*****************************************************************************
1355  * Helper thread for object variables callbacks.
1356  * Only used to avoid deadlocks when using the video embedded mode.
1357  *****************************************************************************/
1358 typedef struct suxor_thread_t
1359 {
1360     VLC_COMMON_MEMBERS
1361     input_thread_t *p_input;
1362
1363 } suxor_thread_t;
1364
1365 static void SuxorRestartVideoES( suxor_thread_t *p_this )
1366 {
1367     vlc_value_t val;
1368
1369     vlc_thread_ready( p_this );
1370
1371     /* Now restart current video stream */
1372     var_Get( p_this->p_input, "video-es", &val );
1373     if( val.i_int >= 0 )
1374     {
1375         vlc_value_t val_es;
1376         val_es.i_int = -VIDEO_ES;
1377         var_Set( p_this->p_input, "video-es", val_es );
1378         var_Set( p_this->p_input, "video-es", val );
1379     }
1380
1381     vlc_object_release( p_this->p_input );
1382
1383     vlc_object_release( p_this );
1384 }
1385
1386 /*****************************************************************************
1387  * object variables callbacks: a bunch of object variables are used by the
1388  * interfaces to interact with the vout.
1389  *****************************************************************************/
1390 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1391                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1392 {
1393     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1394     input_thread_t *p_input;
1395     vlc_value_t val;
1396
1397     char *psz_mode = newval.psz_string;
1398     char *psz_filter, *psz_deinterlace = NULL;
1399     (void)psz_cmd; (void)oldval; (void)p_data;
1400
1401     var_Get( p_vout, "vout-filter", &val );
1402     psz_filter = val.psz_string;
1403     if( psz_filter ) psz_deinterlace = strstr( psz_filter, "deinterlace" );
1404
1405     if( !psz_mode || !*psz_mode )
1406     {
1407         if( psz_deinterlace )
1408         {
1409             char *psz_src = psz_deinterlace + sizeof("deinterlace") - 1;
1410             if( psz_src[0] == ':' ) psz_src++;
1411             memmove( psz_deinterlace, psz_src, strlen(psz_src) + 1 );
1412         }
1413     }
1414     else if( !psz_deinterlace )
1415     {
1416         psz_filter = realloc( psz_filter, strlen( psz_filter ) +
1417                               sizeof(":deinterlace") );
1418         if( psz_filter && *psz_filter ) strcat( psz_filter, ":" );
1419         strcat( psz_filter, "deinterlace" );
1420     }
1421
1422     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1423                                                  FIND_PARENT );
1424     if( !p_input ) return VLC_EGENERIC;
1425
1426     if( psz_mode && *psz_mode )
1427     {
1428         /* Modify input as well because the vout might have to be restarted */
1429         val.psz_string = psz_mode;
1430         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1431         var_Set( p_input, "deinterlace-mode", val );
1432     }
1433     vlc_object_release( p_input );
1434
1435     val.b_bool = true;
1436     var_Set( p_vout, "intf-change", val );
1437
1438     val.psz_string = psz_filter;
1439     var_Set( p_vout, "vout-filter", val );
1440     free( psz_filter );
1441
1442     return VLC_SUCCESS;
1443 }
1444
1445 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1446                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1447 {
1448     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1449     input_thread_t *p_input;
1450     vlc_value_t val;
1451     (void)psz_cmd; (void)oldval; (void)p_data;
1452
1453     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1454                                                  FIND_PARENT );
1455     if (!p_input)
1456     {
1457         msg_Err( p_vout, "Input not found" );
1458         return( VLC_EGENERIC );
1459     }
1460
1461     val.b_bool = true;
1462     var_Set( p_vout, "intf-change", val );
1463
1464     /* Modify input as well because the vout might have to be restarted */
1465     val.psz_string = newval.psz_string;
1466     var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1467
1468     var_Set( p_input, "vout-filter", val );
1469
1470     /* Now restart current video stream */
1471     var_Get( p_input, "video-es", &val );
1472     if( val.i_int >= 0 )
1473     {
1474         suxor_thread_t *p_suxor =
1475             vlc_object_create( p_vout, sizeof(suxor_thread_t) );
1476         p_suxor->p_input = p_input;
1477         p_vout->b_filter_change = true;
1478         vlc_object_yield( p_input );
1479         vlc_thread_create( p_suxor, "suxor", SuxorRestartVideoES,
1480                            VLC_THREAD_PRIORITY_LOW, false );
1481     }
1482
1483     vlc_object_release( p_input );
1484
1485     return VLC_SUCCESS;
1486 }
1487
1488 /*****************************************************************************
1489  * Video Filter2 stuff
1490  *****************************************************************************/
1491 static int VideoFilter2Callback( vlc_object_t *p_this, char const *psz_cmd,
1492                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1493 {
1494     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1495     (void)psz_cmd; (void)oldval; (void)p_data;
1496
1497     vlc_mutex_lock( &p_vout->vfilter_lock );
1498     p_vout->psz_vf2 = strdup( newval.psz_string );
1499     vlc_mutex_unlock( &p_vout->vfilter_lock );
1500
1501     return VLC_SUCCESS;
1502 }
1503
1504 static void DisplayTitleOnOSD( vout_thread_t *p_vout )
1505 {
1506     input_thread_t *p_input;
1507     mtime_t i_now, i_stop;
1508
1509     p_input = (input_thread_t *)vlc_object_find( p_vout,
1510               VLC_OBJECT_INPUT, FIND_ANYWHERE );
1511     if( p_input )
1512     {
1513         i_now = mdate();
1514         i_stop = i_now + (mtime_t)(p_vout->i_title_timeout * 1000);
1515         char *psz_nowplaying =
1516             input_item_GetNowPlaying( input_GetItem( p_input ) );
1517         char *psz_artist = input_item_GetArtist( input_GetItem( p_input ) );
1518         char *psz_name = input_item_GetTitle( input_GetItem( p_input ) );
1519         if( EMPTY_STR( psz_name ) )
1520         {
1521             free( psz_name );
1522             psz_name = input_item_GetName( input_GetItem( p_input ) );
1523         }
1524         if( !EMPTY_STR( psz_nowplaying ) )
1525         {
1526             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1527                                    psz_nowplaying, NULL,
1528                                    p_vout->i_title_position,
1529                                    30 + p_vout->fmt_in.i_width
1530                                       - p_vout->fmt_in.i_visible_width
1531                                       - p_vout->fmt_in.i_x_offset,
1532                                    20 + p_vout->fmt_in.i_y_offset,
1533                                    i_now, i_stop );
1534         }
1535         else if( !EMPTY_STR( psz_artist ) )
1536         {
1537             char *psz_string = NULL;
1538             if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
1539             {
1540                 vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1541                                        psz_string, NULL,
1542                                        p_vout->i_title_position,
1543                                        30 + p_vout->fmt_in.i_width
1544                                           - p_vout->fmt_in.i_visible_width
1545                                           - p_vout->fmt_in.i_x_offset,
1546                                        20 + p_vout->fmt_in.i_y_offset,
1547                                        i_now, i_stop );
1548                 free( psz_string );
1549             }
1550         }
1551         else
1552         {
1553             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1554                                    psz_name, NULL,
1555                                    p_vout->i_title_position,
1556                                    30 + p_vout->fmt_in.i_width
1557                                       - p_vout->fmt_in.i_visible_width
1558                                       - p_vout->fmt_in.i_x_offset,
1559                                    20 + p_vout->fmt_in.i_y_offset,
1560                                    i_now, i_stop );
1561         }
1562         vlc_object_release( p_input );
1563         free( psz_artist );
1564         free( psz_name );
1565         free( psz_nowplaying );
1566     }
1567 }
1568