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

   1 /*****************************************************************************
   2  * video_output.c : video output thread
   3  *
   4  * This module describes the programming interface for video output threads.
   5  * It includes functions allowing to open a new thread, send pictures to a
   6  * thread, and destroy a previously oppened video output thread.
   7  *****************************************************************************
   8  * Copyright (C) 2000-2007 the VideoLAN team
   9  * $Id$
  10  *
  11  * Authors: Vincent Seguin <seguin@via.ecp.fr>
  12  *          Gildas Bazin <gbazin@videolan.org>
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  27  *****************************************************************************/
  28
  29 /*****************************************************************************
  30  * Preamble
  31  *****************************************************************************/
  32 #ifdef HAVE_CONFIG_H
  33 # include "config.h"
  34 #endif
  35
  36 #include <vlc_common.h>
  37
  38 #include <stdlib.h>                                                /* free() */
  39 #include <string.h>
  40
  41
  42 #ifdef HAVE_SYS_TIMES_H
  43 #   include <sys/times.h>
  44 #endif
  45
  46 #include <vlc_vout.h>
  47
  48 #include <vlc_filter.h>
  49 #include <vlc_osd.h>
  50
  51 #if defined( __APPLE__ )
  52 /* Include darwin_specific.h here if needed */
  53 #endif
  54
  55 /** FIXME This is quite ugly but needed while we don't have counters
  56  * helpers */
  57 #include "input/input_internal.h"
  58
  59 #include "modules/modules.h"
  60
  61 /*****************************************************************************
  62  * Local prototypes
  63  *****************************************************************************/
  64 static int      InitThread        ( vout_thread_t * );
  65 static void     RunThread         ( vout_thread_t * );
  66 static void     ErrorThread       ( vout_thread_t * );
  67 static void     EndThread         ( vout_thread_t * );
  68
  69 static void     AspectRatio       ( int, int *, int * );
  70 static int      BinaryLog         ( uint32_t );
  71 static void     MaskToShift       ( int *, int *, uint32_t );
  72
  73 static void     vout_Destructor   ( vlc_object_t * p_this );
  74
  75 /* Object variables callbacks */
  76 static int DeinterlaceCallback( vlc_object_t *, char const *,
  77                                 vlc_value_t, vlc_value_t, void * );
  78 static int FilterCallback( vlc_object_t *, char const *,
  79                            vlc_value_t, vlc_value_t, void * );
  80 static int VideoFilter2Callback( vlc_object_t *, char const *,
  81                                  vlc_value_t, vlc_value_t, void * );
  82
  83 /* From vout_intf.c */
  84 int vout_Snapshot( vout_thread_t *, picture_t * );
  85
  86 /* Display media title in OSD */
  87 static void DisplayTitleOnOSD( vout_thread_t *p_vout );
  88
  89 /*****************************************************************************
  90  * Video Filter2 functions
  91  *****************************************************************************/
  92 static picture_t *video_new_buffer_filter( filter_t *p_filter )
  93 {
  94     picture_t *p_picture;
  95     vout_thread_t *p_vout = (vout_thread_t*)p_filter->p_owner;
  96
  97     p_picture = vout_CreatePicture( p_vout, 0, 0, 0 );
  98
  99     return p_picture;
 100 }
 101
 102 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
 103 {
 104     vout_DestroyPicture( (vout_thread_t*)p_filter->p_owner, p_pic );
 105 }
 106
 107 static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
 108 {
 109     p_filter->pf_vout_buffer_new = video_new_buffer_filter;
 110     p_filter->pf_vout_buffer_del = video_del_buffer_filter;
 111     p_filter->p_owner = p_data; /* p_vout */
 112     return VLC_SUCCESS;
 113 }
 114
 115 /*****************************************************************************
 116  * vout_Request: find a video output thread, create one, or destroy one.
 117  *****************************************************************************
 118  * This function looks for a video output thread matching the current
 119  * properties. If not found, it spawns a new one.
 120  *****************************************************************************/
 121 vout_thread_t *__vout_Request( vlc_object_t *p_this, vout_thread_t *p_vout,
 122                                video_format_t *p_fmt )
 123 {
 124     if( !p_fmt )
 125     {
 126         /* Reattach video output to the instance before bailing out */
 127         if( p_vout )
 128         {
 129             spu_Attach( p_vout->p_spu, p_this, false );
 130             vlc_object_detach( p_vout );
 131             vlc_object_attach( p_vout, p_this->p_libvlc );
 132         }
 133         return NULL;
 134     }
 135
 136     /* If a video output was provided, lock it, otherwise look for one. */
 137     if( p_vout )
 138     {
 139         vlc_object_yield( p_vout );
 140     }
 141     else
 142     {
 143         p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD );
 144
 145         if( !p_vout )
 146         {
 147             p_vout = vlc_object_find( p_this->p_libvlc,
 148                                       VLC_OBJECT_VOUT, FIND_CHILD );
 149             /* only first children of p_input for unused vout */
 150             if( p_vout && p_vout->p_parent != VLC_OBJECT(p_this->p_libvlc) )
 151             {
 152                 vlc_object_release( p_vout );
 153                 p_vout = NULL;
 154             }
 155             if( p_vout )
 156                 vlc_object_detach( p_vout );    /* Remove it from the GC */
 157         }
 158     }
 159
 160     /* If we now have a video output, check it has the right properties */
 161     if( p_vout )
 162     {
 163         char *psz_filter_chain;
 164         vlc_value_t val;
 165
 166         /* We don't directly check for the "vout-filter" variable for obvious
 167          * performance reasons. */
 168         if( p_vout->b_filter_change )
 169         {
 170             var_Get( p_vout, "vout-filter", &val );
 171             psz_filter_chain = val.psz_string;
 172
 173             if( psz_filter_chain && !*psz_filter_chain )
 174             {
 175                 free( psz_filter_chain );
 176                 psz_filter_chain = NULL;
 177             }
 178             if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
 179             {
 180                 free( p_vout->psz_filter_chain );
 181                 p_vout->psz_filter_chain = NULL;
 182             }
 183
 184             if( !psz_filter_chain && !p_vout->psz_filter_chain )
 185             {
 186                 p_vout->b_filter_change = false;
 187             }
 188
 189             free( psz_filter_chain );
 190         }
 191
 192         if( ( p_vout->fmt_render.i_width != p_fmt->i_width ) ||
 193             ( p_vout->fmt_render.i_height != p_fmt->i_height ) ||
 194             ( p_vout->fmt_render.i_aspect != p_fmt->i_aspect ) ||
 195             p_vout->b_filter_change )
 196         {
 197             /* We are not interested in this format, close this vout */
 198             vlc_object_release( p_vout );
 199             vlc_object_release( p_vout );
 200             p_vout = NULL;
 201         }
 202         else
 203         {
 204             /* This video output is cool! Hijack it. */
 205             spu_Attach( p_vout->p_spu, p_this, true );
 206             vlc_object_attach( p_vout, p_this );
 207             if( p_vout->b_title_show )
 208                 DisplayTitleOnOSD( p_vout );
 209             vlc_object_release( p_vout );
 210         }
 211     }
 212
 213     if( !p_vout )
 214     {
 215         msg_Dbg( p_this, "no usable vout present, spawning one" );
 216
 217         p_vout = vout_Create( p_this, p_fmt );
 218     }
 219
 220     return p_vout;
 221 }
 222
 223 /*****************************************************************************
 224  * vout_Create: creates a new video output thread
 225  *****************************************************************************
 226  * This function creates a new video output thread, and returns a pointer
 227  * to its description. On error, it returns NULL.
 228  *****************************************************************************/
 229 vout_thread_t * __vout_Create( vlc_object_t *p_parent, video_format_t *p_fmt )
 230 {
 231     vout_thread_t  * p_vout;                            /* thread descriptor */
 232     input_thread_t * p_input_thread;
 233     int              i_index;                               /* loop variable */
 234     vlc_value_t      val, text;
 235
 236     unsigned int i_width = p_fmt->i_width;
 237     unsigned int i_height = p_fmt->i_height;
 238     vlc_fourcc_t i_chroma = p_fmt->i_chroma;
 239     unsigned int i_aspect = p_fmt->i_aspect;
 240
 241     config_chain_t *p_cfg;
 242     char *psz_parser;
 243     char *psz_name;
 244
 245     /* Allocate descriptor */
 246     p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
 247     if( p_vout == NULL )
 248         return NULL;
 249
 250     /* Initialize pictures - translation tables and functions
 251      * will be initialized later in InitThread */
 252     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
 253     {
 254         p_vout->p_picture[i_index].pf_lock = NULL;
 255         p_vout->p_picture[i_index].pf_unlock = NULL;
 256         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 257         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 258         p_vout->p_picture[i_index].b_slow   = 0;
 259     }
 260
 261     /* No images in the heap */
 262     p_vout->i_heap_size = 0;
 263
 264     /* Initialize the rendering heap */
 265     I_RENDERPICTURES = 0;
 266
 267     vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
 268                  p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 269     p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
 270     p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
 271
 272     p_vout->render.i_width    = i_width;
 273     p_vout->render.i_height   = i_height;
 274     p_vout->render.i_chroma   = i_chroma;
 275     p_vout->render.i_aspect   = i_aspect;
 276
 277     p_vout->render.i_rmask    = 0;
 278     p_vout->render.i_gmask    = 0;
 279     p_vout->render.i_bmask    = 0;
 280
 281     p_vout->render.i_last_used_pic = -1;
 282     p_vout->render.b_allow_modify_pics = 1;
 283
 284     /* Zero the output heap */
 285     I_OUTPUTPICTURES = 0;
 286     p_vout->output.i_width    = 0;
 287     p_vout->output.i_height   = 0;
 288     p_vout->output.i_chroma   = 0;
 289     p_vout->output.i_aspect   = 0;
 290
 291     p_vout->output.i_rmask    = 0;
 292     p_vout->output.i_gmask    = 0;
 293     p_vout->output.i_bmask    = 0;
 294
 295     /* Initialize misc stuff */
 296     p_vout->i_changes    = 0;
 297     p_vout->f_gamma      = 0;
 298     p_vout->b_grayscale  = 0;
 299     p_vout->b_info       = 0;
 300     p_vout->b_interface  = 0;
 301     p_vout->b_scale      = 1;
 302     p_vout->b_fullscreen = 0;
 303     p_vout->i_alignment  = 0;
 304     p_vout->render_time  = 10;
 305     p_vout->c_fps_samples = 0;
 306     p_vout->b_filter_change = 0;
 307     p_vout->pf_control = NULL;
 308     p_vout->p_window = NULL;
 309     p_vout->i_par_num = p_vout->i_par_den = 1;
 310
 311     /* Initialize locks */
 312     vlc_mutex_init( &p_vout->picture_lock );
 313     vlc_mutex_init( &p_vout->change_lock );
 314     vlc_mutex_init( &p_vout->vfilter_lock );
 315
 316     /* Mouse coordinates */
 317     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 318     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 319     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 320     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 321     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 322
 323     /* Initialize subpicture unit */
 324     p_vout->p_spu = spu_Create( p_vout );
 325     spu_Attach( p_vout->p_spu, p_parent, true );
 326
 327     /* Attach the new object now so we can use var inheritance below */
 328     vlc_object_attach( p_vout, p_parent );
 329
 330     spu_Init( p_vout->p_spu );
 331
 332     /* Take care of some "interface/control" related initialisations */
 333     vout_IntfInit( p_vout );
 334
 335     /* If the parent is not a VOUT object, that means we are at the start of
 336      * the video output pipe */
 337     if( p_parent->i_object_type != VLC_OBJECT_VOUT )
 338     {
 339         /* Look for the default filter configuration */
 340         p_vout->psz_filter_chain =
 341             var_CreateGetStringCommand( p_vout, "vout-filter" );
 342
 343         /* Apply video filter2 objects on the first vout */
 344         p_vout->psz_vf2 =
 345             var_CreateGetStringCommand( p_vout, "video-filter" );
 346     }
 347     else
 348     {
 349         /* continue the parent's filter chain */
 350         char *psz_tmp;
 351
 352         /* Ugly hack to jump to our configuration chain */
 353         p_vout->psz_filter_chain
 354             = ((vout_thread_t *)p_parent)->psz_filter_chain;
 355         p_vout->psz_filter_chain
 356             = config_ChainCreate( &psz_tmp, &p_cfg, p_vout->psz_filter_chain );
 357         config_ChainDestroy( p_cfg );
 358         free( psz_tmp );
 359
 360         /* Create a video filter2 var ... but don't inherit values */
 361         var_Create( p_vout, "video-filter",
 362                     VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 363         p_vout->psz_vf2 = var_GetString( p_vout, "video-filter" );
 364     }
 365
 366     var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
 367     p_vout->p_vf2_chain = filter_chain_New( p_vout, "video filter2",
 368         false, video_filter_buffer_allocation_init, NULL, p_vout );
 369
 370     /* Choose the video output module */
 371     if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 372     {
 373         var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 374         var_Get( p_vout, "vout", &val );
 375         psz_parser = val.psz_string;
 376     }
 377     else
 378     {
 379         psz_parser = strdup( p_vout->psz_filter_chain );
 380     }
 381
 382     /* Create the vout thread */
 383     config_ChainCreate( &psz_name, &p_cfg, psz_parser );
 384     free( psz_parser );
 385     p_vout->p_cfg = p_cfg;
 386     p_vout->p_module = module_Need( p_vout,
 387         ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
 388         "video filter" : "video output", psz_name, p_vout->psz_filter_chain && *p_vout->psz_filter_chain );
 389     free( psz_name );
 390
 391     if( p_vout->p_module == NULL )
 392     {
 393         msg_Err( p_vout, "no suitable vout module" );
 394         vlc_object_detach( p_vout );
 395         vlc_object_release( p_vout );
 396         return NULL;
 397     }
 398
 399     /* Create a few object variables for interface interaction */
 400     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
 401     text.psz_string = _("Deinterlace");
 402     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
 403     val.psz_string = (char *)""; text.psz_string = _("Disable");
 404     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 405     val.psz_string = (char *)"discard"; text.psz_string = _("Discard");
 406     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 407     val.psz_string = (char *)"blend"; text.psz_string = _("Blend");
 408     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 409     val.psz_string = (char *)"mean"; text.psz_string = _("Mean");
 410     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 411     val.psz_string = (char *)"bob"; text.psz_string = _("Bob");
 412     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 413     val.psz_string = (char *)"linear"; text.psz_string = _("Linear");
 414     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 415     val.psz_string = (char *)"x"; text.psz_string = (char *)"X";
 416     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 417
 418     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 419     {
 420         var_Set( p_vout, "deinterlace", val );
 421         free( val.psz_string );
 422     }
 423     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 424
 425     var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 426     text.psz_string = _("Filters");
 427     var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
 428     var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
 429
 430     /* Calculate delay created by internal caching */
 431     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 432                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 433     if( p_input_thread )
 434     {
 435         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 436         vlc_object_release( p_input_thread );
 437     }
 438     else
 439     {
 440         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 441     }
 442
 443     if( vlc_thread_create( p_vout, "video output", RunThread,
 444                            VLC_THREAD_PRIORITY_OUTPUT, true ) )
 445     {
 446         module_Unneed( p_vout, p_vout->p_module );
 447         vlc_object_release( p_vout );
 448         return NULL;
 449     }
 450
 451     if( p_vout->b_error )
 452     {
 453         msg_Err( p_vout, "video output creation failed" );
 454
 455         /* Make sure the thread is destroyed */
 456         vlc_object_release( p_vout );
 457         return NULL;
 458     }
 459
 460     vlc_object_set_destructor( p_vout, vout_Destructor );
 461
 462     return p_vout;
 463 }
 464
 465 static void vout_Destructor( vlc_object_t * p_this )
 466 {
 467     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 468
 469     /* Destroy the locks */
 470     vlc_mutex_destroy( &p_vout->picture_lock );
 471     vlc_mutex_destroy( &p_vout->change_lock );
 472     vlc_mutex_destroy( &p_vout->vfilter_lock );
 473
 474     /* Release the module */
 475     if( p_vout->p_module )
 476     {
 477         module_Unneed( p_vout, p_vout->p_module );
 478     }
 479
 480     free( p_vout->psz_filter_chain );
 481
 482     config_ChainDestroy( p_vout->p_cfg );
 483
 484 #ifndef __APPLE__
 485     vout_thread_t *p_another_vout;
 486
 487     /* This is a dirty hack mostly for Linux, where there is no way to get the
 488      * GUI back if you closed it while playing video. This is solved in
 489      * Mac OS X, where we have this novelty called menubar, that will always
 490      * allow you access to the applications main functionality. They should try
 491      * that on linux sometime. */
 492     p_another_vout = vlc_object_find( p_this->p_libvlc,
 493                                       VLC_OBJECT_VOUT, FIND_ANYWHERE );
 494     if( p_another_vout == NULL )
 495         var_SetBool( p_this->p_libvlc, "intf-show", true );
 496     else
 497         vlc_object_release( p_another_vout );
 498 #endif
 499 }
 500
 501 /*****************************************************************************
 502  * InitThread: initialize video output thread
 503  *****************************************************************************
 504  * This function is called from RunThread and performs the second step of the
 505  * initialization. It returns 0 on success. Note that the thread's flag are not
 506  * modified inside this function.
 507  *****************************************************************************/
 508 static picture_t *get_pic( filter_t *p_filter )
 509 {
 510     picture_t *p_pic = (picture_t *)p_filter->p_owner;
 511     p_filter->p_owner = NULL;
 512     return p_pic;
 513 }
 514
 515 static int InitThread( vout_thread_t *p_vout )
 516 {
 517     int i, i_aspect_x, i_aspect_y;
 518
 519     vlc_mutex_lock( &p_vout->change_lock );
 520
 521 #ifdef STATS
 522     p_vout->c_loops = 0;
 523 #endif
 524
 525     /* Initialize output method, it allocates direct buffers for us */
 526     if( p_vout->pf_init( p_vout ) )
 527     {
 528         vlc_mutex_unlock( &p_vout->change_lock );
 529         return VLC_EGENERIC;
 530     }
 531
 532     if( !I_OUTPUTPICTURES )
 533     {
 534         msg_Err( p_vout, "plugin was unable to allocate at least "
 535                          "one direct buffer" );
 536         p_vout->pf_end( p_vout );
 537         vlc_mutex_unlock( &p_vout->change_lock );
 538         return VLC_EGENERIC;
 539     }
 540
 541     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 542     {
 543         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 544                          "our internal buffers must have overflown." );
 545         p_vout->pf_end( p_vout );
 546         vlc_mutex_unlock( &p_vout->change_lock );
 547         return VLC_EGENERIC;
 548     }
 549
 550     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 551
 552     AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );
 553
 554     msg_Dbg( p_vout, "picture in %ix%i (%i,%i,%ix%i), "
 555              "chroma %4.4s, ar %i:%i, sar %i:%i",
 556              p_vout->fmt_render.i_width, p_vout->fmt_render.i_height,
 557              p_vout->fmt_render.i_x_offset, p_vout->fmt_render.i_y_offset,
 558              p_vout->fmt_render.i_visible_width,
 559              p_vout->fmt_render.i_visible_height,
 560              (char*)&p_vout->fmt_render.i_chroma,
 561              i_aspect_x, i_aspect_y,
 562              p_vout->fmt_render.i_sar_num, p_vout->fmt_render.i_sar_den );
 563
 564     AspectRatio( p_vout->fmt_in.i_aspect, &i_aspect_x, &i_aspect_y );
 565
 566     msg_Dbg( p_vout, "picture user %ix%i (%i,%i,%ix%i), "
 567              "chroma %4.4s, ar %i:%i, sar %i:%i",
 568              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 569              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 570              p_vout->fmt_in.i_visible_width,
 571              p_vout->fmt_in.i_visible_height,
 572              (char*)&p_vout->fmt_in.i_chroma,
 573              i_aspect_x, i_aspect_y,
 574              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 575
 576     if( !p_vout->fmt_out.i_width || !p_vout->fmt_out.i_height )
 577     {
 578         p_vout->fmt_out.i_width = p_vout->fmt_out.i_visible_width =
 579             p_vout->output.i_width;
 580         p_vout->fmt_out.i_height = p_vout->fmt_out.i_visible_height =
 581             p_vout->output.i_height;
 582         p_vout->fmt_out.i_x_offset =  p_vout->fmt_out.i_y_offset = 0;
 583
 584         p_vout->fmt_out.i_aspect = p_vout->output.i_aspect;
 585         p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 586     }
 587     if( !p_vout->fmt_out.i_sar_num || !p_vout->fmt_out.i_sar_num )
 588     {
 589         p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_aspect *
 590             p_vout->fmt_out.i_height;
 591         p_vout->fmt_out.i_sar_den = VOUT_ASPECT_FACTOR *
 592             p_vout->fmt_out.i_width;
 593     }
 594
 595     vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
 596                  p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
 597
 598     AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
 599
 600     msg_Dbg( p_vout, "picture out %ix%i (%i,%i,%ix%i), "
 601              "chroma %4.4s, ar %i:%i, sar %i:%i",
 602              p_vout->fmt_out.i_width, p_vout->fmt_out.i_height,
 603              p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
 604              p_vout->fmt_out.i_visible_width,
 605              p_vout->fmt_out.i_visible_height,
 606              (char*)&p_vout->fmt_out.i_chroma,
 607              i_aspect_x, i_aspect_y,
 608              p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den );
 609
 610     /* Calculate shifts from system-updated masks */
 611     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 612                  p_vout->output.i_rmask );
 613     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 614                  p_vout->output.i_gmask );
 615     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 616                  p_vout->output.i_bmask );
 617
 618     /* Check whether we managed to create direct buffers similar to
 619      * the render buffers, ie same size and chroma */
 620     if( ( p_vout->output.i_width == p_vout->render.i_width )
 621      && ( p_vout->output.i_height == p_vout->render.i_height )
 622      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 623     {
 624         /* Cool ! We have direct buffers, we can ask the decoder to
 625          * directly decode into them ! Map the first render buffers to
 626          * the first direct buffers, but keep the first direct buffer
 627          * for memcpy operations */
 628         p_vout->b_direct = 1;
 629
 630         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 631         {
 632             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 633                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 634                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 635             {
 636                 /* We have enough direct buffers so there's no need to
 637                  * try to use system memory buffers. */
 638                 break;
 639             }
 640             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 641             I_RENDERPICTURES++;
 642         }
 643
 644         msg_Dbg( p_vout, "direct render, mapping "
 645                  "render pictures 0-%i to system pictures 1-%i",
 646                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 647     }
 648     else
 649     {
 650         /* Rats... Something is wrong here, we could not find an output
 651          * plugin able to directly render what we decode. See if we can
 652          * find a chroma plugin to do the conversion */
 653         p_vout->b_direct = 0;
 654
 655         /* Choose the best module */
 656         p_vout->p_chroma = vlc_object_create( p_vout, VLC_OBJECT_FILTER );
 657         filter_t *p_chroma = p_vout->p_chroma;
 658         vlc_object_attach( p_chroma, p_vout );
 659         /* TODO: Set the fmt_in and fmt_out stuff here */
 660         p_chroma->fmt_in.video = p_vout->fmt_render;
 661         p_chroma->fmt_out.video = p_vout->fmt_out;
 662
 663         /* TODO: put in a function */
 664         p_chroma->fmt_out.video.i_rmask = p_vout->output.i_rmask;
 665         p_chroma->fmt_out.video.i_gmask = p_vout->output.i_gmask;
 666         p_chroma->fmt_out.video.i_bmask = p_vout->output.i_bmask;
 667         p_chroma->fmt_out.video.i_rrshift = p_vout->output.i_rrshift;
 668         p_chroma->fmt_out.video.i_lrshift = p_vout->output.i_lrshift;
 669         p_chroma->fmt_out.video.i_rgshift = p_vout->output.i_rgshift;
 670         p_chroma->fmt_out.video.i_lgshift = p_vout->output.i_lgshift;
 671         p_chroma->fmt_out.video.i_rbshift = p_vout->output.i_rbshift;
 672         p_chroma->fmt_out.video.i_lbshift = p_vout->output.i_lbshift;
 673         p_chroma->p_module = module_Need( p_chroma, "video filter2", NULL, 0 );
 674
 675         if( p_chroma->p_module == NULL )
 676         {
 677             msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
 678                      (char*)&p_vout->render.i_chroma,
 679                      (char*)&p_vout->output.i_chroma );
 680             vlc_object_detach( p_vout->p_chroma );
 681             p_vout->p_chroma = NULL;
 682             p_vout->pf_end( p_vout );
 683             vlc_mutex_unlock( &p_vout->change_lock );
 684             return VLC_EGENERIC;
 685         }
 686         p_chroma->pf_vout_buffer_new = get_pic;
 687
 688         msg_Dbg( p_vout, "indirect render, mapping "
 689                  "render pictures 0-%i to system pictures %i-%i",
 690                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 691                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 692
 693         /* Append render buffers after the direct buffers */
 694         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 695         {
 696             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 697             I_RENDERPICTURES++;
 698
 699             /* Check if we have enough render pictures */
 700             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 701                 break;
 702         }
 703     }
 704
 705     /* Link pictures back to their heap */
 706     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 707     {
 708         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 709     }
 710
 711     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 712     {
 713         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 714     }
 715
 716 /* XXX XXX mark thread ready */
 717     return VLC_SUCCESS;
 718 }
 719
 720 /*****************************************************************************
 721  * RunThread: video output thread
 722  *****************************************************************************
 723  * Video output thread. This function does only returns when the thread is
 724  * terminated. It handles the pictures arriving in the video heap and the
 725  * display device events.
 726  *****************************************************************************/
 727 static void RunThread( vout_thread_t *p_vout)
 728 {
 729     int             i_index;                                /* index in heap */
 730     int             i_idle_loops = 0;  /* loops without displaying a picture */
 731     mtime_t         current_date;                            /* current date */
 732     mtime_t         display_date;                            /* display date */
 733
 734     picture_t *     p_picture;                            /* picture pointer */
 735     picture_t *     p_last_picture = NULL;                   /* last picture */
 736     picture_t *     p_directbuffer;              /* direct buffer to display */
 737
 738     subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
 739
 740     input_thread_t *p_input = NULL ;           /* Parent input, if it exists */
 741
 742     vlc_value_t     val;
 743     bool      b_drop_late;
 744
 745     int             i_displayed = 0, i_lost = 0, i_loops = 0;
 746
 747     /*
 748      * Initialize thread
 749      */
 750     p_vout->b_error = InitThread( p_vout );
 751
 752     var_Create( p_vout, "drop-late-frames", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 753     var_Get( p_vout, "drop-late-frames", &val );
 754     b_drop_late = val.b_bool;
 755
 756     /* signal the creation of the vout */
 757     vlc_thread_ready( p_vout );
 758
 759     if( p_vout->b_error )
 760         return;
 761
 762     vlc_object_lock( p_vout );
 763
 764     if( p_vout->b_title_show )
 765         DisplayTitleOnOSD( p_vout );
 766
 767     /*
 768      * Main loop - it is not executed if an error occurred during
 769      * initialization
 770      */
 771     while( (vlc_object_alive( p_vout )) && (!p_vout->b_error) )
 772     {
 773         /* Initialize loop variables */
 774         p_picture = NULL;
 775         display_date = 0;
 776         current_date = mdate();
 777
 778         i_loops++;
 779             if( !p_input )
 780             {
 781                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 782                                            FIND_PARENT );
 783             }
 784             if( p_input )
 785             {
 786                 vlc_mutex_lock( &p_input->p->counters.counters_lock );
 787                 stats_UpdateInteger( p_vout, p_input->p->counters.p_lost_pictures,
 788                                      i_lost , NULL);
 789                 stats_UpdateInteger( p_vout,
 790                                      p_input->p->counters.p_displayed_pictures,
 791                                      i_displayed , NULL);
 792                 i_displayed = i_lost = 0;
 793                 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 794                 vlc_object_release( p_input );
 795                 p_input = NULL;
 796             }
 797 #if 0
 798         p_vout->c_loops++;
 799         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 800         {
 801             msg_Dbg( p_vout, "picture heap: %d/%d",
 802                      I_RENDERPICTURES, p_vout->i_heap_size );
 803         }
 804 #endif
 805
 806         /*
 807          * Find the picture to display (the one with the earliest date).
 808          * This operation does not need lock, since only READY_PICTUREs
 809          * are handled. */
 810         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 811         {
 812             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 813                 && ( (p_picture == NULL) ||
 814                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 815             {
 816                 p_picture = PP_RENDERPICTURE[i_index];
 817                 display_date = p_picture->date;
 818             }
 819         }
 820
 821         if( p_picture )
 822         {
 823             /* If we met the last picture, parse again to see whether there is
 824              * a more appropriate one. */
 825             if( p_picture == p_last_picture )
 826             {
 827                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 828                 {
 829                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 830                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 831                         && ((p_picture == p_last_picture) ||
 832                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 833                     {
 834                         p_picture = PP_RENDERPICTURE[i_index];
 835                         display_date = p_picture->date;
 836                     }
 837                 }
 838             }
 839
 840             /* If we found better than the last picture, destroy it */
 841             if( p_last_picture && p_picture != p_last_picture )
 842             {
 843                 vlc_mutex_lock( &p_vout->picture_lock );
 844                 if( p_last_picture->i_refcount )
 845                 {
 846                     p_last_picture->i_status = DISPLAYED_PICTURE;
 847                 }
 848                 else
 849                 {
 850                     p_last_picture->i_status = DESTROYED_PICTURE;
 851                     p_vout->i_heap_size--;
 852                 }
 853                 vlc_mutex_unlock( &p_vout->picture_lock );
 854                 p_last_picture = NULL;
 855             }
 856
 857             /* Compute FPS rate */
 858             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 859                 = display_date;
 860
 861             if( !p_picture->b_force &&
 862                 p_picture != p_last_picture &&
 863                 display_date < current_date + p_vout->render_time &&
 864                 b_drop_late )
 865             {
 866                 /* Picture is late: it will be destroyed and the thread
 867                  * will directly choose the next picture */
 868                 vlc_mutex_lock( &p_vout->picture_lock );
 869                 if( p_picture->i_refcount )
 870                 {
 871                     /* Pretend we displayed the picture, but don't destroy
 872                      * it since the decoder might still need it. */
 873                     p_picture->i_status = DISPLAYED_PICTURE;
 874                 }
 875                 else
 876                 {
 877                     /* Destroy the picture without displaying it */
 878                     p_picture->i_status = DESTROYED_PICTURE;
 879                     p_vout->i_heap_size--;
 880                 }
 881                 msg_Warn( p_vout, "late picture skipped (%"PRId64")",
 882                                   current_date - display_date );
 883                 i_lost++;
 884                 vlc_mutex_unlock( &p_vout->picture_lock );
 885
 886                 continue;
 887             }
 888
 889             if( display_date >
 890                 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
 891             {
 892                 /* Picture is waaay too early: it will be destroyed */
 893                 vlc_mutex_lock( &p_vout->picture_lock );
 894                 if( p_picture->i_refcount )
 895                 {
 896                     /* Pretend we displayed the picture, but don't destroy
 897                      * it since the decoder might still need it. */
 898                     p_picture->i_status = DISPLAYED_PICTURE;
 899                 }
 900                 else
 901                 {
 902                     /* Destroy the picture without displaying it */
 903                     p_picture->i_status = DESTROYED_PICTURE;
 904                     p_vout->i_heap_size--;
 905                 }
 906                 i_lost++;
 907                 msg_Warn( p_vout, "vout warning: early picture skipped "
 908                           "(%"PRId64")", display_date - current_date
 909                           - p_vout->i_pts_delay );
 910                 vlc_mutex_unlock( &p_vout->picture_lock );
 911
 912                 continue;
 913             }
 914
 915             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 916             {
 917                 /* A picture is ready to be rendered, but its rendering date
 918                  * is far from the current one so the thread will perform an
 919                  * empty loop as if no picture were found. The picture state
 920                  * is unchanged */
 921                 p_picture    = NULL;
 922                 display_date = 0;
 923             }
 924             else if( p_picture == p_last_picture )
 925             {
 926                 /* We are asked to repeat the previous picture, but we first
 927                  * wait for a couple of idle loops */
 928                 if( i_idle_loops < 4 )
 929                 {
 930                     p_picture    = NULL;
 931                     display_date = 0;
 932                 }
 933                 else
 934                 {
 935                     /* We set the display date to something high, otherwise
 936                      * we'll have lots of problems with late pictures */
 937                     display_date = current_date + p_vout->render_time;
 938                 }
 939             }
 940         }
 941
 942         if( p_picture == NULL )
 943         {
 944             i_idle_loops++;
 945         }
 946
 947         /* Video Filter2 stuff */
 948         if( p_vout->psz_vf2 )
 949         {
 950             es_format_t fmt;
 951
 952             vlc_mutex_lock( &p_vout->vfilter_lock );
 953
 954             es_format_Init( &fmt, VIDEO_ES, p_vout->fmt_render.i_chroma );
 955             fmt.video = p_vout->fmt_render;
 956             filter_chain_Reset( p_vout->p_vf2_chain, &fmt, &fmt );
 957
 958             if( filter_chain_AppendFromString( p_vout->p_vf2_chain,
 959                                                p_vout->psz_vf2 ) < 0 )
 960                 msg_Err( p_vout, "Video filter chain creation failed" );
 961
 962             free( p_vout->psz_vf2 );
 963             p_vout->psz_vf2 = NULL;
 964             vlc_mutex_unlock( &p_vout->vfilter_lock );
 965         }
 966
 967         if( p_picture )
 968         {
 969             p_picture = filter_chain_VideoFilter( p_vout->p_vf2_chain,
 970                                                   p_picture );
 971         }
 972
 973         if( p_picture && p_vout->b_snapshot )
 974         {
 975             p_vout->b_snapshot = false;
 976             vout_Snapshot( p_vout, p_picture );
 977         }
 978
 979         /*
 980          * Check for subpictures to display
 981          */
 982         if( display_date > 0 )
 983         {
 984             if( !p_input )
 985             {
 986                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 987                                            FIND_PARENT );
 988             }
 989             p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date,
 990             p_input ? var_GetBool( p_input, "state" ) == PAUSE_S : false );
 991             if( p_input )
 992                 vlc_object_release( p_input );
 993             p_input = NULL;
 994         }
 995
 996         /*
 997          * Perform rendering
 998          */
 999         i_displayed++;
1000         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
1001
1002         /*
1003          * Call the plugin-specific rendering method if there is one
1004          */
1005         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
1006         {
1007             /* Render the direct buffer returned by vout_RenderPicture */
1008             p_vout->pf_render( p_vout, p_directbuffer );
1009         }
1010
1011         /*
1012          * Sleep, wake up
1013          */
1014         if( display_date != 0 && p_directbuffer != NULL )
1015         {
1016             mtime_t current_render_time = mdate() - current_date;
1017             /* if render time is very large we don't include it in the mean */
1018             if( current_render_time < p_vout->render_time +
1019                 VOUT_DISPLAY_DELAY )
1020             {
1021                 /* Store render time using a sliding mean weighting to
1022                  * current value in a 3 to 1 ratio*/
1023                 p_vout->render_time *= 3;
1024                 p_vout->render_time += current_render_time;
1025                 p_vout->render_time >>= 2;
1026             }
1027         }
1028
1029         /* Give back change lock */
1030         vlc_mutex_unlock( &p_vout->change_lock );
1031
1032         vlc_object_unlock( p_vout );
1033
1034         /* Sleep a while or until a given date */
1035         if( display_date != 0 )
1036         {
1037             /* If there are filters in the chain, better give them the picture
1038              * in advance */
1039             if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
1040             {
1041                 mwait( display_date - VOUT_MWAIT_TOLERANCE );
1042             }
1043         }
1044         else
1045         {
1046             msleep( VOUT_IDLE_SLEEP );
1047         }
1048
1049         /* On awakening, take back lock and send immediately picture
1050          * to display. */
1051         vlc_object_lock( p_vout );
1052         /* Note: vlc_object_alive() could be false here, and we
1053          * could be dead */
1054         vlc_mutex_lock( &p_vout->change_lock );
1055
1056         /*
1057          * Display the previously rendered picture
1058          */
1059         if( p_picture != NULL && p_directbuffer != NULL )
1060         {
1061             /* Display the direct buffer returned by vout_RenderPicture */
1062             if( p_vout->pf_display )
1063             {
1064                 p_vout->pf_display( p_vout, p_directbuffer );
1065             }
1066
1067             /* Tell the vout this was the last picture and that it does not
1068              * need to be forced anymore. */
1069             p_last_picture = p_picture;
1070             p_last_picture->b_force = 0;
1071         }
1072
1073         if( p_picture != NULL )
1074         {
1075             /* Reinitialize idle loop count */
1076             i_idle_loops = 0;
1077         }
1078
1079         /*
1080          * Check events and manage thread
1081          */
1082         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
1083         {
1084             /* A fatal error occurred, and the thread must terminate
1085              * immediately, without displaying anything - setting b_error to 1
1086              * causes the immediate end of the main while() loop. */
1087             p_vout->b_error = 1;
1088         }
1089
1090         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
1091         {
1092             /* this must only happen when the vout plugin is incapable of
1093              * rescaling the picture itself. In this case we need to destroy
1094              * the current picture buffers and recreate new ones with the right
1095              * dimensions */
1096             int i;
1097
1098             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
1099
1100             p_vout->pf_end( p_vout );
1101             for( i = 0; i < I_OUTPUTPICTURES; i++ )
1102                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
1103
1104             I_OUTPUTPICTURES = 0;
1105             if( p_vout->pf_init( p_vout ) )
1106             {
1107                 msg_Err( p_vout, "cannot resize display" );
1108                 /* FIXME: pf_end will be called again in EndThread() */
1109                 p_vout->b_error = 1;
1110             }
1111
1112             /* Need to reinitialise the chroma plugin. Since we might need
1113              * resizing too and it's not sure that we already had it,
1114              * recreate the chroma plugin chain from scratch. */
1115             /* dionoea */
1116             if( p_vout->p_chroma->p_module )
1117             {
1118                 filter_t *p_chroma = p_vout->p_chroma;
1119                 module_Unneed( p_chroma, p_chroma->p_module );
1120                 p_chroma->fmt_out.video = p_vout->fmt_out;
1121                 p_chroma->fmt_out.video.i_rmask = p_vout->output.i_rmask;
1122                 p_chroma->fmt_out.video.i_gmask = p_vout->output.i_gmask;
1123                 p_chroma->fmt_out.video.i_bmask = p_vout->output.i_bmask;
1124                 p_chroma->fmt_out.video.i_rrshift = p_vout->output.i_rrshift;
1125                 p_chroma->fmt_out.video.i_lrshift = p_vout->output.i_lrshift;
1126                 p_chroma->fmt_out.video.i_rgshift = p_vout->output.i_rgshift;
1127                 p_chroma->fmt_out.video.i_lgshift = p_vout->output.i_lgshift;
1128                 p_chroma->fmt_out.video.i_rbshift = p_vout->output.i_rbshift;
1129                 p_chroma->fmt_out.video.i_lbshift = p_vout->output.i_lbshift;
1130                 p_chroma->p_module = module_Need( p_chroma, "video filter2", NULL, 0 );
1131                 if( !p_chroma->p_module )
1132                 {
1133                     msg_Err( p_vout, "WOW THIS SUCKS BIG TIME!!!!!" );
1134                 }
1135             }
1136         }
1137
1138         if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1139         {
1140             /* This happens when the picture buffers need to be recreated.
1141              * This is useful on multimonitor displays for instance.
1142              *
1143              * Warning: This only works when the vout creates only 1 picture
1144              * buffer!! */
1145             p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1146
1147             if( !p_vout->b_direct )
1148             {
1149                 module_Unneed( p_vout->p_chroma, p_vout->p_chroma->p_module );
1150                 vlc_object_detach( p_vout->p_chroma );
1151                 vlc_object_release( p_vout->p_chroma );
1152                 p_vout->p_chroma = NULL;
1153             }
1154
1155             vlc_mutex_lock( &p_vout->picture_lock );
1156
1157             p_vout->pf_end( p_vout );
1158
1159             I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1160
1161             p_vout->b_error = InitThread( p_vout );
1162
1163             vlc_mutex_unlock( &p_vout->picture_lock );
1164         }
1165     }
1166
1167
1168     if( p_input )
1169     {
1170         vlc_object_release( p_input );
1171     }
1172
1173     /*
1174      * Error loop - wait until the thread destruction is requested
1175      */
1176     if( p_vout->b_error )
1177     {
1178         ErrorThread( p_vout );
1179     }
1180
1181     /* End of thread */
1182     EndThread( p_vout );
1183     vlc_object_unlock( p_vout );
1184 }
1185
1186 /*****************************************************************************
1187  * ErrorThread: RunThread() error loop
1188  *****************************************************************************
1189  * This function is called when an error occurred during thread main's loop.
1190  * The thread can still receive feed, but must be ready to terminate as soon
1191  * as possible.
1192  *****************************************************************************/
1193 static void ErrorThread( vout_thread_t *p_vout )
1194 {
1195     /* Wait until a `die' order */
1196     while( !p_vout->b_die )
1197     {
1198         /* Sleep a while */
1199         msleep( VOUT_IDLE_SLEEP );
1200     }
1201 }
1202
1203 /*****************************************************************************
1204  * EndThread: thread destruction
1205  *****************************************************************************
1206  * This function is called when the thread ends after a sucessful
1207  * initialization. It frees all resources allocated by InitThread.
1208  *****************************************************************************/
1209 static void EndThread( vout_thread_t *p_vout )
1210 {
1211     int     i_index;                                        /* index in heap */
1212
1213 #ifdef STATS
1214     {
1215         struct tms cpu_usage;
1216         times( &cpu_usage );
1217
1218         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1219                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1220     }
1221 #endif
1222
1223     if( !p_vout->b_direct )
1224     {
1225         module_Unneed( p_vout->p_chroma, p_vout->p_chroma->p_module );
1226         vlc_object_release( p_vout->p_chroma );
1227         p_vout->p_chroma = NULL;
1228     }
1229
1230     /* Destroy all remaining pictures */
1231     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1232     {
1233         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1234         {
1235             free( p_vout->p_picture[i_index].p_data_orig );
1236         }
1237     }
1238
1239     /* Destroy subpicture unit */
1240     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), false );
1241     spu_Destroy( p_vout->p_spu );
1242
1243     /* Destroy the video filters2 */
1244     filter_chain_Delete( p_vout->p_vf2_chain );
1245
1246     /* Destroy translation tables */
1247     p_vout->pf_end( p_vout );
1248
1249     /* Release the change lock */
1250     vlc_mutex_unlock( &p_vout->change_lock );
1251 }
1252
1253 /* following functions are local */
1254
1255 static int ReduceHeight( int i_ratio )
1256 {
1257     int i_dummy = VOUT_ASPECT_FACTOR;
1258     int i_pgcd  = 1;
1259
1260     if( !i_ratio )
1261     {
1262         return i_pgcd;
1263     }
1264
1265     /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1266     while( !(i_ratio & 1) && !(i_dummy & 1) )
1267     {
1268         i_ratio >>= 1;
1269         i_dummy >>= 1;
1270         i_pgcd  <<= 1;
1271     }
1272
1273     while( !(i_ratio % 3) && !(i_dummy % 3) )
1274     {
1275         i_ratio /= 3;
1276         i_dummy /= 3;
1277         i_pgcd  *= 3;
1278     }
1279
1280     while( !(i_ratio % 5) && !(i_dummy % 5) )
1281     {
1282         i_ratio /= 5;
1283         i_dummy /= 5;
1284         i_pgcd  *= 5;
1285     }
1286
1287     return i_pgcd;
1288 }
1289
1290 static void AspectRatio( int i_aspect, int *i_aspect_x, int *i_aspect_y )
1291 {
1292     unsigned int i_pgcd = ReduceHeight( i_aspect );
1293     *i_aspect_x = i_aspect / i_pgcd;
1294     *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
1295 }
1296
1297 /*****************************************************************************
1298  * BinaryLog: computes the base 2 log of a binary value
1299  *****************************************************************************
1300  * This functions is used by MaskToShift, to get a bit index from a binary
1301  * value.
1302  *****************************************************************************/
1303 static int BinaryLog( uint32_t i )
1304 {
1305     int i_log = 0;
1306
1307     if( i == 0 ) return -31337;
1308
1309     if( i & 0xffff0000 ) i_log += 16;
1310     if( i & 0xff00ff00 ) i_log += 8;
1311     if( i & 0xf0f0f0f0 ) i_log += 4;
1312     if( i & 0xcccccccc ) i_log += 2;
1313     if( i & 0xaaaaaaaa ) i_log += 1;
1314
1315     return i_log;
1316 }
1317
1318 /*****************************************************************************
1319  * MaskToShift: transform a color mask into right and left shifts
1320  *****************************************************************************
1321  * This function is used for obtaining color shifts from masks.
1322  *****************************************************************************/
1323 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1324 {
1325     uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
1326
1327     if( !i_mask )
1328     {
1329         *pi_left = *pi_right = 0;
1330         return;
1331     }
1332
1333     /* Get bits */
1334     i_low = i_high = i_mask;
1335
1336     i_low &= - (int32_t)i_low;          /* lower bit of the mask */
1337     i_high += i_low;                    /* higher bit of the mask */
1338
1339     /* Transform bits into an index. Also deal with i_high overflow, which
1340      * is faster than changing the BinaryLog code to handle 64 bit integers. */
1341     i_low =  BinaryLog (i_low);
1342     i_high = i_high ? BinaryLog (i_high) : 32;
1343
1344     /* Update pointers and return */
1345     *pi_left =   i_low;
1346     *pi_right = (8 - i_high + i_low);
1347 }
1348
1349 /*****************************************************************************
1350  * vout_VarCallback: generic callback for intf variables
1351  *****************************************************************************/
1352 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1353                       vlc_value_t oldval, vlc_value_t newval,
1354                       void *p_data )
1355 {
1356     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1357     vlc_value_t val;
1358     (void)psz_variable; (void)newval; (void)oldval; (void)p_data;
1359     val.b_bool = true;
1360     var_Set( p_vout, "intf-change", val );
1361     return VLC_SUCCESS;
1362 }
1363
1364 /*****************************************************************************
1365  * Helper thread for object variables callbacks.
1366  * Only used to avoid deadlocks when using the video embedded mode.
1367  *****************************************************************************/
1368 typedef struct suxor_thread_t
1369 {
1370     VLC_COMMON_MEMBERS
1371     input_thread_t *p_input;
1372
1373 } suxor_thread_t;
1374
1375 static void SuxorRestartVideoES( suxor_thread_t *p_this )
1376 {
1377     vlc_value_t val;
1378
1379     vlc_thread_ready( p_this );
1380
1381     /* Now restart current video stream */
1382     var_Get( p_this->p_input, "video-es", &val );
1383     if( val.i_int >= 0 )
1384     {
1385         vlc_value_t val_es;
1386         val_es.i_int = -VIDEO_ES;
1387         var_Set( p_this->p_input, "video-es", val_es );
1388         var_Set( p_this->p_input, "video-es", val );
1389     }
1390
1391     vlc_object_release( p_this->p_input );
1392
1393     vlc_object_release( p_this );
1394 }
1395
1396 /*****************************************************************************
1397  * object variables callbacks: a bunch of object variables are used by the
1398  * interfaces to interact with the vout.
1399  *****************************************************************************/
1400 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1401                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1402 {
1403     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1404     input_thread_t *p_input;
1405     vlc_value_t val;
1406
1407     char *psz_mode = newval.psz_string;
1408     char *psz_filter, *psz_deinterlace = NULL;
1409     (void)psz_cmd; (void)oldval; (void)p_data;
1410
1411     var_Get( p_vout, "vout-filter", &val );
1412     psz_filter = val.psz_string;
1413     if( psz_filter ) psz_deinterlace = strstr( psz_filter, "deinterlace" );
1414
1415     if( !psz_mode || !*psz_mode )
1416     {
1417         if( psz_deinterlace )
1418         {
1419             char *psz_src = psz_deinterlace + sizeof("deinterlace") - 1;
1420             if( psz_src[0] == ':' ) psz_src++;
1421             memmove( psz_deinterlace, psz_src, strlen(psz_src) + 1 );
1422         }
1423     }
1424     else if( !psz_deinterlace )
1425     {
1426         psz_filter = realloc( psz_filter, strlen( psz_filter ) +
1427                               sizeof(":deinterlace") );
1428         if( psz_filter && *psz_filter ) strcat( psz_filter, ":" );
1429         strcat( psz_filter, "deinterlace" );
1430     }
1431
1432     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1433                                                  FIND_PARENT );
1434     if( !p_input ) return VLC_EGENERIC;
1435
1436     if( psz_mode && *psz_mode )
1437     {
1438         /* Modify input as well because the vout might have to be restarted */
1439         val.psz_string = psz_mode;
1440         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1441         var_Set( p_input, "deinterlace-mode", val );
1442     }
1443     vlc_object_release( p_input );
1444
1445     val.b_bool = true;
1446     var_Set( p_vout, "intf-change", val );
1447
1448     val.psz_string = psz_filter;
1449     var_Set( p_vout, "vout-filter", val );
1450     free( psz_filter );
1451
1452     return VLC_SUCCESS;
1453 }
1454
1455 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1456                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1457 {
1458     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1459     input_thread_t *p_input;
1460     vlc_value_t val;
1461     (void)psz_cmd; (void)oldval; (void)p_data;
1462
1463     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1464                                                  FIND_PARENT );
1465     if (!p_input)
1466     {
1467         msg_Err( p_vout, "Input not found" );
1468         return( VLC_EGENERIC );
1469     }
1470
1471     val.b_bool = true;
1472     var_Set( p_vout, "intf-change", val );
1473
1474     /* Modify input as well because the vout might have to be restarted */
1475     val.psz_string = newval.psz_string;
1476     var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1477
1478     var_Set( p_input, "vout-filter", val );
1479
1480     /* Now restart current video stream */
1481     var_Get( p_input, "video-es", &val );
1482     if( val.i_int >= 0 )
1483     {
1484         suxor_thread_t *p_suxor =
1485             vlc_object_create( p_vout, sizeof(suxor_thread_t) );
1486         p_suxor->p_input = p_input;
1487         p_vout->b_filter_change = true;
1488         vlc_object_yield( p_input );
1489         vlc_thread_create( p_suxor, "suxor", SuxorRestartVideoES,
1490                            VLC_THREAD_PRIORITY_LOW, false );
1491     }
1492
1493     vlc_object_release( p_input );
1494
1495     return VLC_SUCCESS;
1496 }
1497
1498 /*****************************************************************************
1499  * Video Filter2 stuff
1500  *****************************************************************************/
1501 static int VideoFilter2Callback( vlc_object_t *p_this, char const *psz_cmd,
1502                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1503 {
1504     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1505     (void)psz_cmd; (void)oldval; (void)p_data;
1506
1507     vlc_mutex_lock( &p_vout->vfilter_lock );
1508     p_vout->psz_vf2 = strdup( newval.psz_string );
1509     vlc_mutex_unlock( &p_vout->vfilter_lock );
1510
1511     return VLC_SUCCESS;
1512 }
1513
1514 static void DisplayTitleOnOSD( vout_thread_t *p_vout )
1515 {
1516     input_thread_t *p_input;
1517     mtime_t i_now, i_stop;
1518
1519     p_input = (input_thread_t *)vlc_object_find( p_vout,
1520               VLC_OBJECT_INPUT, FIND_ANYWHERE );
1521     if( p_input )
1522     {
1523         i_now = mdate();
1524         i_stop = i_now + (mtime_t)(p_vout->i_title_timeout * 1000);
1525         char *psz_nowplaying =
1526             input_item_GetNowPlaying( input_GetItem( p_input ) );
1527         char *psz_artist = input_item_GetArtist( input_GetItem( p_input ) );
1528         char *psz_name = input_item_GetTitle( input_GetItem( p_input ) );
1529         if( EMPTY_STR( psz_name ) )
1530         {
1531             free( psz_name );
1532             psz_name = input_item_GetName( input_GetItem( p_input ) );
1533         }
1534         if( !EMPTY_STR( psz_nowplaying ) )
1535         {
1536             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1537                                    psz_nowplaying, NULL,
1538                                    p_vout->i_title_position,
1539                                    30 + p_vout->fmt_in.i_width
1540                                       - p_vout->fmt_in.i_visible_width
1541                                       - p_vout->fmt_in.i_x_offset,
1542                                    20 + p_vout->fmt_in.i_y_offset,
1543                                    i_now, i_stop );
1544         }
1545         else if( !EMPTY_STR( psz_artist ) )
1546         {
1547             char *psz_string = NULL;
1548             if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
1549             {
1550                 vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1551                                        psz_string, NULL,
1552                                        p_vout->i_title_position,
1553                                        30 + p_vout->fmt_in.i_width
1554                                           - p_vout->fmt_in.i_visible_width
1555                                           - p_vout->fmt_in.i_x_offset,
1556                                        20 + p_vout->fmt_in.i_y_offset,
1557                                        i_now, i_stop );
1558                 free( psz_string );
1559             }
1560         }
1561         else
1562         {
1563             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1564                                    psz_name, NULL,
1565                                    p_vout->i_title_position,
1566                                    30 + p_vout->fmt_in.i_width
1567                                       - p_vout->fmt_in.i_visible_width
1568                                       - p_vout->fmt_in.i_x_offset,
1569                                    20 + p_vout->fmt_in.i_y_offset,
1570                                    i_now, i_stop );
1571         }
1572         vlc_object_release( p_input );
1573         free( psz_artist );
1574         free( psz_name );
1575         free( psz_nowplaying );
1576     }
1577 }
1578