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 #include <assert.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     CleanThread       ( vout_thread_t * );
  69 static void     EndThread         ( vout_thread_t * );
  70
  71 static void     AspectRatio       ( int, int *, int * );
  72 static int      BinaryLog         ( uint32_t );
  73 static void     MaskToShift       ( int *, int *, uint32_t );
  74
  75 static void     vout_Destructor   ( vlc_object_t * p_this );
  76
  77 /* Object variables callbacks */
  78 static int DeinterlaceCallback( vlc_object_t *, char const *,
  79                                 vlc_value_t, vlc_value_t, void * );
  80 static int FilterCallback( vlc_object_t *, char const *,
  81                            vlc_value_t, vlc_value_t, void * );
  82 static int VideoFilter2Callback( vlc_object_t *, char const *,
  83                                  vlc_value_t, vlc_value_t, void * );
  84
  85 /* From vout_intf.c */
  86 int vout_Snapshot( vout_thread_t *, picture_t * );
  87
  88 /* Display media title in OSD */
  89 static void DisplayTitleOnOSD( vout_thread_t *p_vout );
  90
  91 /*****************************************************************************
  92  * Video Filter2 functions
  93  *****************************************************************************/
  94 static picture_t *video_new_buffer_filter( filter_t *p_filter )
  95 {
  96     picture_t *p_picture;
  97     vout_thread_t *p_vout = (vout_thread_t*)p_filter->p_owner;
  98
  99     p_picture = vout_CreatePicture( p_vout, 0, 0, 0 );
 100
 101     return p_picture;
 102 }
 103
 104 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
 105 {
 106     vout_DestroyPicture( (vout_thread_t*)p_filter->p_owner, p_pic );
 107 }
 108
 109 static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
 110 {
 111     p_filter->pf_vout_buffer_new = video_new_buffer_filter;
 112     p_filter->pf_vout_buffer_del = video_del_buffer_filter;
 113     p_filter->p_owner = p_data; /* p_vout */
 114     return VLC_SUCCESS;
 115 }
 116
 117 /*****************************************************************************
 118  * vout_Request: find a video output thread, create one, or destroy one.
 119  *****************************************************************************
 120  * This function looks for a video output thread matching the current
 121  * properties. If not found, it spawns a new one.
 122  *****************************************************************************/
 123 vout_thread_t *__vout_Request( vlc_object_t *p_this, vout_thread_t *p_vout,
 124                                video_format_t *p_fmt )
 125 {
 126     if( !p_fmt )
 127     {
 128         /* Video output is no longer used.
 129          * TODO: support for reusing video outputs with proper _thread-safe_
 130          * reference handling. */
 131         if( p_vout )
 132         {
 133             spu_Attach( p_vout->p_spu, p_this, false );
 134             vlc_object_kill( p_vout );
 135             vlc_thread_join( p_vout );
 136             module_Unneed( p_vout, p_vout->p_module );
 137             vlc_object_release( p_vout );
 138         }
 139         return NULL;
 140     }
 141
 142     /* If a video output was provided, lock it, otherwise look for one. */
 143     if( p_vout )
 144     {
 145         vlc_object_yield( p_vout );
 146     }
 147
 148     /* TODO: find a suitable unused video output */
 149
 150     /* If we now have a video output, check it has the right properties */
 151     if( p_vout )
 152     {
 153         char *psz_filter_chain;
 154         vlc_value_t val;
 155
 156         /* We don't directly check for the "vout-filter" variable for obvious
 157          * performance reasons. */
 158         if( p_vout->b_filter_change )
 159         {
 160             var_Get( p_vout, "vout-filter", &val );
 161             psz_filter_chain = val.psz_string;
 162
 163             if( psz_filter_chain && !*psz_filter_chain )
 164             {
 165                 free( psz_filter_chain );
 166                 psz_filter_chain = NULL;
 167             }
 168             if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
 169             {
 170                 free( p_vout->psz_filter_chain );
 171                 p_vout->psz_filter_chain = NULL;
 172             }
 173
 174             if( !psz_filter_chain && !p_vout->psz_filter_chain )
 175             {
 176                 p_vout->b_filter_change = false;
 177             }
 178
 179             free( psz_filter_chain );
 180         }
 181
 182         if( ( p_vout->fmt_render.i_width != p_fmt->i_width ) ||
 183             ( p_vout->fmt_render.i_height != p_fmt->i_height ) ||
 184             ( p_vout->fmt_render.i_aspect != p_fmt->i_aspect ) ||
 185             p_vout->b_filter_change )
 186         {
 187             /* We are not interested in this format, close this vout */
 188             vlc_object_release( p_vout );
 189             vlc_object_release( p_vout );
 190             p_vout = NULL;
 191         }
 192         else
 193         {
 194             /* This video output is cool! Hijack it. */
 195             spu_Attach( p_vout->p_spu, p_this, true );
 196             vlc_object_attach( p_vout, p_this );
 197             if( p_vout->b_title_show )
 198                 DisplayTitleOnOSD( p_vout );
 199             vlc_object_release( p_vout );
 200         }
 201     }
 202
 203     if( !p_vout )
 204     {
 205         msg_Dbg( p_this, "no usable vout present, spawning one" );
 206
 207         p_vout = vout_Create( p_this, p_fmt );
 208     }
 209
 210     return p_vout;
 211 }
 212
 213 /*****************************************************************************
 214  * vout_Create: creates a new video output thread
 215  *****************************************************************************
 216  * This function creates a new video output thread, and returns a pointer
 217  * to its description. On error, it returns NULL.
 218  *****************************************************************************/
 219 vout_thread_t * __vout_Create( vlc_object_t *p_parent, video_format_t *p_fmt )
 220 {
 221     vout_thread_t  * p_vout;                            /* thread descriptor */
 222     input_thread_t * p_input_thread;
 223     int              i_index;                               /* loop variable */
 224     vlc_value_t      val, text;
 225
 226     unsigned int i_width = p_fmt->i_width;
 227     unsigned int i_height = p_fmt->i_height;
 228     vlc_fourcc_t i_chroma = p_fmt->i_chroma;
 229     unsigned int i_aspect = p_fmt->i_aspect;
 230
 231     config_chain_t *p_cfg;
 232     char *psz_parser;
 233     char *psz_name;
 234
 235     /* Allocate descriptor */
 236     static const char typename[] = "video output";
 237     p_vout = vlc_custom_create( p_parent, sizeof( *p_vout ), VLC_OBJECT_VOUT,
 238                                 typename );
 239     if( p_vout == NULL )
 240         return NULL;
 241
 242     /* Initialize pictures - translation tables and functions
 243      * will be initialized later in InitThread */
 244     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
 245     {
 246         p_vout->p_picture[i_index].pf_lock = NULL;
 247         p_vout->p_picture[i_index].pf_unlock = NULL;
 248         p_vout->p_picture[i_index].i_status = FREE_PICTURE;
 249         p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
 250         p_vout->p_picture[i_index].b_slow   = 0;
 251     }
 252
 253     /* No images in the heap */
 254     p_vout->i_heap_size = 0;
 255
 256     /* Initialize the rendering heap */
 257     I_RENDERPICTURES = 0;
 258
 259     vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
 260                  p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
 261     p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
 262     p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
 263
 264     p_vout->render.i_width    = i_width;
 265     p_vout->render.i_height   = i_height;
 266     p_vout->render.i_chroma   = i_chroma;
 267     p_vout->render.i_aspect   = i_aspect;
 268
 269     p_vout->render.i_rmask    = p_fmt->i_rmask;
 270     p_vout->render.i_gmask    = p_fmt->i_gmask;
 271     p_vout->render.i_bmask    = p_fmt->i_bmask;
 272
 273     p_vout->render.i_last_used_pic = -1;
 274     p_vout->render.b_allow_modify_pics = 1;
 275
 276     /* Zero the output heap */
 277     I_OUTPUTPICTURES = 0;
 278     p_vout->output.i_width    = 0;
 279     p_vout->output.i_height   = 0;
 280     p_vout->output.i_chroma   = 0;
 281     p_vout->output.i_aspect   = 0;
 282
 283     p_vout->output.i_rmask    = 0;
 284     p_vout->output.i_gmask    = 0;
 285     p_vout->output.i_bmask    = 0;
 286
 287     /* Initialize misc stuff */
 288     p_vout->i_changes    = 0;
 289     p_vout->f_gamma      = 0;
 290     p_vout->b_grayscale  = 0;
 291     p_vout->b_info       = 0;
 292     p_vout->b_interface  = 0;
 293     p_vout->b_scale      = 1;
 294     p_vout->b_fullscreen = 0;
 295     p_vout->i_alignment  = 0;
 296     p_vout->render_time  = 10;
 297     p_vout->c_fps_samples = 0;
 298     p_vout->b_filter_change = 0;
 299     p_vout->pf_control = NULL;
 300     p_vout->p_window = NULL;
 301     p_vout->i_par_num = p_vout->i_par_den = 1;
 302
 303     /* Initialize locks */
 304     vlc_mutex_init( &p_vout->picture_lock );
 305     vlc_mutex_init( &p_vout->change_lock );
 306     vlc_mutex_init( &p_vout->vfilter_lock );
 307
 308     /* Mouse coordinates */
 309     var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
 310     var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
 311     var_Create( p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 312     var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
 313     var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 314
 315     /* Initialize subpicture unit */
 316     p_vout->p_spu = spu_Create( p_vout );
 317     spu_Attach( p_vout->p_spu, p_parent, true );
 318
 319     /* Attach the new object now so we can use var inheritance below */
 320     vlc_object_attach( p_vout, p_parent );
 321
 322     spu_Init( p_vout->p_spu );
 323
 324     /* Take care of some "interface/control" related initialisations */
 325     vout_IntfInit( p_vout );
 326
 327     /* If the parent is not a VOUT object, that means we are at the start of
 328      * the video output pipe */
 329     if( p_parent->i_object_type != VLC_OBJECT_VOUT )
 330     {
 331         /* Look for the default filter configuration */
 332         p_vout->psz_filter_chain =
 333             var_CreateGetStringCommand( p_vout, "vout-filter" );
 334
 335         /* Apply video filter2 objects on the first vout */
 336         p_vout->psz_vf2 =
 337             var_CreateGetStringCommand( p_vout, "video-filter" );
 338     }
 339     else
 340     {
 341         /* continue the parent's filter chain */
 342         char *psz_tmp;
 343
 344         /* Ugly hack to jump to our configuration chain */
 345         p_vout->psz_filter_chain
 346             = ((vout_thread_t *)p_parent)->psz_filter_chain;
 347         p_vout->psz_filter_chain
 348             = config_ChainCreate( &psz_tmp, &p_cfg, p_vout->psz_filter_chain );
 349         config_ChainDestroy( p_cfg );
 350         free( psz_tmp );
 351
 352         /* Create a video filter2 var ... but don't inherit values */
 353         var_Create( p_vout, "video-filter",
 354                     VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 355         p_vout->psz_vf2 = var_GetString( p_vout, "video-filter" );
 356     }
 357
 358     var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
 359     p_vout->p_vf2_chain = filter_chain_New( p_vout, "video filter2",
 360         false, video_filter_buffer_allocation_init, NULL, p_vout );
 361
 362     /* Choose the video output module */
 363     if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 364     {
 365         var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 366         var_Get( p_vout, "vout", &val );
 367         psz_parser = val.psz_string;
 368     }
 369     else
 370     {
 371         psz_parser = strdup( p_vout->psz_filter_chain );
 372     }
 373
 374     /* Create the vout thread */
 375     config_ChainCreate( &psz_name, &p_cfg, psz_parser );
 376     free( psz_parser );
 377     p_vout->p_cfg = p_cfg;
 378     p_vout->p_module = module_Need( p_vout,
 379         ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
 380         "video filter" : "video output", psz_name, p_vout->psz_filter_chain && *p_vout->psz_filter_chain );
 381     free( psz_name );
 382
 383     if( p_vout->p_module == NULL )
 384     {
 385         msg_Err( p_vout, "no suitable vout module" );
 386         // FIXME it's ugly but that's exactly the function that need to be called.
 387         EndThread( p_vout );
 388         vlc_object_detach( p_vout );
 389         vlc_object_release( p_vout );
 390         return NULL;
 391     }
 392
 393     /* Create a few object variables for interface interaction */
 394     var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
 395     text.psz_string = _("Deinterlace");
 396     var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
 397     val.psz_string = (char *)""; text.psz_string = _("Disable");
 398     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 399     val.psz_string = (char *)"discard"; text.psz_string = _("Discard");
 400     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 401     val.psz_string = (char *)"blend"; text.psz_string = _("Blend");
 402     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 403     val.psz_string = (char *)"mean"; text.psz_string = _("Mean");
 404     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 405     val.psz_string = (char *)"bob"; text.psz_string = _("Bob");
 406     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 407     val.psz_string = (char *)"linear"; text.psz_string = _("Linear");
 408     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 409     val.psz_string = (char *)"x"; text.psz_string = (char *)"X";
 410     var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
 411
 412     if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
 413     {
 414         var_Set( p_vout, "deinterlace", val );
 415         free( val.psz_string );
 416     }
 417     var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );
 418
 419     var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 420     text.psz_string = _("Filters");
 421     var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
 422     var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
 423
 424     /* Calculate delay created by internal caching */
 425     p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
 426                                            VLC_OBJECT_INPUT, FIND_ANYWHERE );
 427     if( p_input_thread )
 428     {
 429         p_vout->i_pts_delay = p_input_thread->i_pts_delay;
 430         vlc_object_release( p_input_thread );
 431     }
 432     else
 433     {
 434         p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
 435     }
 436
 437     if( vlc_thread_create( p_vout, "video output", RunThread,
 438                            VLC_THREAD_PRIORITY_OUTPUT, true ) )
 439     {
 440         module_Unneed( p_vout, p_vout->p_module );
 441         vlc_object_release( p_vout );
 442         return NULL;
 443     }
 444
 445     vlc_object_set_destructor( p_vout, vout_Destructor );
 446
 447     if( p_vout->b_error )
 448     {
 449         msg_Err( p_vout, "video output creation failed" );
 450
 451         /* Make sure the thread is destroyed and data released */
 452         vlc_object_kill( p_vout );
 453         vlc_thread_join( p_vout );
 454         module_Unneed( p_vout, p_vout->p_module );
 455         vlc_object_release( p_vout );
 456         return NULL;
 457     }
 458
 459     return p_vout;
 460 }
 461
 462 static void vout_Destructor( vlc_object_t * p_this )
 463 {
 464     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 465
 466     /* Destroy the locks */
 467     vlc_mutex_destroy( &p_vout->picture_lock );
 468     vlc_mutex_destroy( &p_vout->change_lock );
 469     vlc_mutex_destroy( &p_vout->vfilter_lock );
 470
 471     free( p_vout->psz_filter_chain );
 472
 473     config_ChainDestroy( p_vout->p_cfg );
 474
 475 #ifndef __APPLE__
 476     vout_thread_t *p_another_vout;
 477
 478     /* This is a dirty hack mostly for Linux, where there is no way to get the
 479      * GUI back if you closed it while playing video. This is solved in
 480      * Mac OS X, where we have this novelty called menubar, that will always
 481      * allow you access to the applications main functionality. They should try
 482      * that on linux sometime. */
 483     p_another_vout = vlc_object_find( p_this->p_libvlc,
 484                                       VLC_OBJECT_VOUT, FIND_ANYWHERE );
 485     if( p_another_vout == NULL )
 486         var_SetBool( p_this->p_libvlc, "intf-show", true );
 487     else
 488         vlc_object_release( p_another_vout );
 489 #endif
 490 }
 491
 492 /*****************************************************************************
 493  * InitThread: initialize video output thread
 494  *****************************************************************************
 495  * This function is called from RunThread and performs the second step of the
 496  * initialization. It returns 0 on success. Note that the thread's flag are not
 497  * modified inside this function.
 498  * XXX You have to enter it with change_lock taken.
 499  *****************************************************************************/
 500 static int ChromaCreate( vout_thread_t *p_vout );
 501 static void ChromaDestroy( vout_thread_t *p_vout );
 502
 503 static int InitThread( vout_thread_t *p_vout )
 504 {
 505     int i, i_aspect_x, i_aspect_y;
 506
 507 #ifdef STATS
 508     p_vout->c_loops = 0;
 509 #endif
 510
 511     /* Initialize output method, it allocates direct buffers for us */
 512     if( p_vout->pf_init( p_vout ) )
 513         return VLC_EGENERIC;
 514
 515     if( !I_OUTPUTPICTURES )
 516     {
 517         msg_Err( p_vout, "plugin was unable to allocate at least "
 518                          "one direct buffer" );
 519         p_vout->pf_end( p_vout );
 520         return VLC_EGENERIC;
 521     }
 522
 523     if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
 524     {
 525         msg_Err( p_vout, "plugin allocated too many direct buffers, "
 526                          "our internal buffers must have overflown." );
 527         p_vout->pf_end( p_vout );
 528         return VLC_EGENERIC;
 529     }
 530
 531     msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
 532
 533     AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );
 534
 535     msg_Dbg( p_vout, "picture in %ix%i (%i,%i,%ix%i), "
 536              "chroma %4.4s, ar %i:%i, sar %i:%i",
 537              p_vout->fmt_render.i_width, p_vout->fmt_render.i_height,
 538              p_vout->fmt_render.i_x_offset, p_vout->fmt_render.i_y_offset,
 539              p_vout->fmt_render.i_visible_width,
 540              p_vout->fmt_render.i_visible_height,
 541              (char*)&p_vout->fmt_render.i_chroma,
 542              i_aspect_x, i_aspect_y,
 543              p_vout->fmt_render.i_sar_num, p_vout->fmt_render.i_sar_den );
 544
 545     AspectRatio( p_vout->fmt_in.i_aspect, &i_aspect_x, &i_aspect_y );
 546
 547     msg_Dbg( p_vout, "picture user %ix%i (%i,%i,%ix%i), "
 548              "chroma %4.4s, ar %i:%i, sar %i:%i",
 549              p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
 550              p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
 551              p_vout->fmt_in.i_visible_width,
 552              p_vout->fmt_in.i_visible_height,
 553              (char*)&p_vout->fmt_in.i_chroma,
 554              i_aspect_x, i_aspect_y,
 555              p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );
 556
 557     if( !p_vout->fmt_out.i_width || !p_vout->fmt_out.i_height )
 558     {
 559         p_vout->fmt_out.i_width = p_vout->fmt_out.i_visible_width =
 560             p_vout->output.i_width;
 561         p_vout->fmt_out.i_height = p_vout->fmt_out.i_visible_height =
 562             p_vout->output.i_height;
 563         p_vout->fmt_out.i_x_offset =  p_vout->fmt_out.i_y_offset = 0;
 564
 565         p_vout->fmt_out.i_aspect = p_vout->output.i_aspect;
 566         p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 567     }
 568     if( !p_vout->fmt_out.i_sar_num || !p_vout->fmt_out.i_sar_num )
 569     {
 570         p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_aspect *
 571             p_vout->fmt_out.i_height;
 572         p_vout->fmt_out.i_sar_den = VOUT_ASPECT_FACTOR *
 573             p_vout->fmt_out.i_width;
 574     }
 575
 576     vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
 577                  p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
 578
 579     AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
 580
 581     msg_Dbg( p_vout, "picture out %ix%i (%i,%i,%ix%i), "
 582              "chroma %4.4s, ar %i:%i, sar %i:%i",
 583              p_vout->fmt_out.i_width, p_vout->fmt_out.i_height,
 584              p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
 585              p_vout->fmt_out.i_visible_width,
 586              p_vout->fmt_out.i_visible_height,
 587              (char*)&p_vout->fmt_out.i_chroma,
 588              i_aspect_x, i_aspect_y,
 589              p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den );
 590
 591     /* Calculate shifts from system-updated masks */
 592     MaskToShift( &p_vout->render.i_lrshift, &p_vout->output.i_rrshift,
 593                  p_vout->render.i_rmask );
 594     MaskToShift( &p_vout->render.i_lgshift, &p_vout->output.i_rgshift,
 595                  p_vout->render.i_gmask );
 596     MaskToShift( &p_vout->render.i_lbshift, &p_vout->output.i_rbshift,
 597                  p_vout->render.i_bmask );
 598
 599     MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
 600                  p_vout->output.i_rmask );
 601     MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
 602                  p_vout->output.i_gmask );
 603     MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
 604                  p_vout->output.i_bmask );
 605
 606     /* Check whether we managed to create direct buffers similar to
 607      * the render buffers, ie same size and chroma */
 608     if( ( p_vout->output.i_width == p_vout->render.i_width )
 609      && ( p_vout->output.i_height == p_vout->render.i_height )
 610      && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
 611     {
 612         /* Cool ! We have direct buffers, we can ask the decoder to
 613          * directly decode into them ! Map the first render buffers to
 614          * the first direct buffers, but keep the first direct buffer
 615          * for memcpy operations */
 616         p_vout->b_direct = 1;
 617
 618         for( i = 1; i < VOUT_MAX_PICTURES; i++ )
 619         {
 620             if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
 621                 I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
 622                 p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
 623             {
 624                 /* We have enough direct buffers so there's no need to
 625                  * try to use system memory buffers. */
 626                 break;
 627             }
 628             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 629             I_RENDERPICTURES++;
 630         }
 631
 632         msg_Dbg( p_vout, "direct render, mapping "
 633                  "render pictures 0-%i to system pictures 1-%i",
 634                  VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
 635     }
 636     else
 637     {
 638         /* Rats... Something is wrong here, we could not find an output
 639          * plugin able to directly render what we decode. See if we can
 640          * find a chroma plugin to do the conversion */
 641         p_vout->b_direct = 0;
 642
 643         if( ChromaCreate( p_vout ) )
 644         {
 645             p_vout->pf_end( p_vout );
 646             return VLC_EGENERIC;
 647         }
 648
 649         msg_Dbg( p_vout, "indirect render, mapping "
 650                  "render pictures 0-%i to system pictures %i-%i",
 651                  VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
 652                  I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
 653
 654         /* Append render buffers after the direct buffers */
 655         for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
 656         {
 657             PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
 658             I_RENDERPICTURES++;
 659
 660             /* Check if we have enough render pictures */
 661             if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
 662                 break;
 663         }
 664     }
 665
 666     /* Link pictures back to their heap */
 667     for( i = 0 ; i < I_RENDERPICTURES ; i++ )
 668     {
 669         PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
 670     }
 671
 672     for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
 673     {
 674         PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
 675     }
 676
 677     return VLC_SUCCESS;
 678 }
 679
 680 /*****************************************************************************
 681  * RunThread: video output thread
 682  *****************************************************************************
 683  * Video output thread. This function does only returns when the thread is
 684  * terminated. It handles the pictures arriving in the video heap and the
 685  * display device events.
 686  *****************************************************************************/
 687 static void RunThread( vout_thread_t *p_vout)
 688 {
 689     int             i_index;                                /* index in heap */
 690     int             i_idle_loops = 0;  /* loops without displaying a picture */
 691     mtime_t         current_date;                            /* current date */
 692     mtime_t         display_date;                            /* display date */
 693
 694     picture_t *     p_picture;                            /* picture pointer */
 695     picture_t *     p_last_picture = NULL;                   /* last picture */
 696     picture_t *     p_directbuffer;              /* direct buffer to display */
 697
 698     subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
 699
 700     input_thread_t *p_input = NULL ;           /* Parent input, if it exists */
 701
 702     vlc_value_t     val;
 703     bool      b_drop_late;
 704
 705     int             i_displayed = 0, i_lost = 0, i_loops = 0;
 706
 707     /*
 708      * Initialize thread
 709      */
 710     vlc_mutex_lock( &p_vout->change_lock );
 711     p_vout->b_error = InitThread( p_vout );
 712
 713     var_Create( p_vout, "drop-late-frames", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 714     var_Get( p_vout, "drop-late-frames", &val );
 715     b_drop_late = val.b_bool;
 716
 717     /* signal the creation of the vout */
 718     vlc_thread_ready( p_vout );
 719
 720     if( p_vout->b_error )
 721     {
 722         EndThread( p_vout );
 723         vlc_mutex_unlock( &p_vout->change_lock );
 724         return;
 725     }
 726
 727     vlc_object_lock( p_vout );
 728
 729     if( p_vout->b_title_show )
 730         DisplayTitleOnOSD( p_vout );
 731
 732     /*
 733      * Main loop - it is not executed if an error occurred during
 734      * initialization
 735      */
 736     while( (vlc_object_alive( p_vout )) && (!p_vout->b_error) )
 737     {
 738         /* Initialize loop variables */
 739         p_picture = NULL;
 740         display_date = 0;
 741         current_date = mdate();
 742
 743         i_loops++;
 744             if( !p_input )
 745             {
 746                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 747                                            FIND_PARENT );
 748             }
 749             if( p_input )
 750             {
 751                 vlc_mutex_lock( &p_input->p->counters.counters_lock );
 752                 stats_UpdateInteger( p_vout, p_input->p->counters.p_lost_pictures,
 753                                      i_lost , NULL);
 754                 stats_UpdateInteger( p_vout,
 755                                      p_input->p->counters.p_displayed_pictures,
 756                                      i_displayed , NULL);
 757                 i_displayed = i_lost = 0;
 758                 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 759                 vlc_object_release( p_input );
 760                 p_input = NULL;
 761             }
 762 #if 0
 763         p_vout->c_loops++;
 764         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 765         {
 766             msg_Dbg( p_vout, "picture heap: %d/%d",
 767                      I_RENDERPICTURES, p_vout->i_heap_size );
 768         }
 769 #endif
 770
 771         /*
 772          * Find the picture to display (the one with the earliest date).
 773          * This operation does not need lock, since only READY_PICTUREs
 774          * are handled. */
 775         for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 776         {
 777             if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 778                 && ( (p_picture == NULL) ||
 779                      (PP_RENDERPICTURE[i_index]->date < display_date) ) )
 780             {
 781                 p_picture = PP_RENDERPICTURE[i_index];
 782                 display_date = p_picture->date;
 783             }
 784         }
 785
 786         if( p_picture )
 787         {
 788             /* If we met the last picture, parse again to see whether there is
 789              * a more appropriate one. */
 790             if( p_picture == p_last_picture )
 791             {
 792                 for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
 793                 {
 794                     if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
 795                         && (PP_RENDERPICTURE[i_index] != p_last_picture)
 796                         && ((p_picture == p_last_picture) ||
 797                             (PP_RENDERPICTURE[i_index]->date < display_date)) )
 798                     {
 799                         p_picture = PP_RENDERPICTURE[i_index];
 800                         display_date = p_picture->date;
 801                     }
 802                 }
 803             }
 804
 805             /* If we found better than the last picture, destroy it */
 806             if( p_last_picture && p_picture != p_last_picture )
 807             {
 808                 vlc_mutex_lock( &p_vout->picture_lock );
 809                 if( p_last_picture->i_refcount )
 810                 {
 811                     p_last_picture->i_status = DISPLAYED_PICTURE;
 812                 }
 813                 else
 814                 {
 815                     p_last_picture->i_status = DESTROYED_PICTURE;
 816                     p_vout->i_heap_size--;
 817                 }
 818                 vlc_mutex_unlock( &p_vout->picture_lock );
 819                 p_last_picture = NULL;
 820             }
 821
 822             /* Compute FPS rate */
 823             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
 824                 = display_date;
 825
 826             if( !p_picture->b_force &&
 827                 p_picture != p_last_picture &&
 828                 display_date < current_date + p_vout->render_time &&
 829                 b_drop_late )
 830             {
 831                 /* Picture is late: it will be destroyed and the thread
 832                  * will directly choose the next picture */
 833                 vlc_mutex_lock( &p_vout->picture_lock );
 834                 if( p_picture->i_refcount )
 835                 {
 836                     /* Pretend we displayed the picture, but don't destroy
 837                      * it since the decoder might still need it. */
 838                     p_picture->i_status = DISPLAYED_PICTURE;
 839                 }
 840                 else
 841                 {
 842                     /* Destroy the picture without displaying it */
 843                     p_picture->i_status = DESTROYED_PICTURE;
 844                     p_vout->i_heap_size--;
 845                 }
 846                 msg_Warn( p_vout, "late picture skipped (%"PRId64")",
 847                                   current_date - display_date );
 848                 i_lost++;
 849                 vlc_mutex_unlock( &p_vout->picture_lock );
 850
 851                 continue;
 852             }
 853
 854             if( display_date >
 855                 current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
 856             {
 857                 /* Picture is waaay too early: it will be destroyed */
 858                 vlc_mutex_lock( &p_vout->picture_lock );
 859                 if( p_picture->i_refcount )
 860                 {
 861                     /* Pretend we displayed the picture, but don't destroy
 862                      * it since the decoder might still need it. */
 863                     p_picture->i_status = DISPLAYED_PICTURE;
 864                 }
 865                 else
 866                 {
 867                     /* Destroy the picture without displaying it */
 868                     p_picture->i_status = DESTROYED_PICTURE;
 869                     p_vout->i_heap_size--;
 870                 }
 871                 i_lost++;
 872                 msg_Warn( p_vout, "vout warning: early picture skipped "
 873                           "(%"PRId64")", display_date - current_date
 874                           - p_vout->i_pts_delay );
 875                 vlc_mutex_unlock( &p_vout->picture_lock );
 876
 877                 continue;
 878             }
 879
 880             if( display_date > current_date + VOUT_DISPLAY_DELAY )
 881             {
 882                 /* A picture is ready to be rendered, but its rendering date
 883                  * is far from the current one so the thread will perform an
 884                  * empty loop as if no picture were found. The picture state
 885                  * is unchanged */
 886                 p_picture    = NULL;
 887                 display_date = 0;
 888             }
 889             else if( p_picture == p_last_picture )
 890             {
 891                 /* We are asked to repeat the previous picture, but we first
 892                  * wait for a couple of idle loops */
 893                 if( i_idle_loops < 4 )
 894                 {
 895                     p_picture    = NULL;
 896                     display_date = 0;
 897                 }
 898                 else
 899                 {
 900                     /* We set the display date to something high, otherwise
 901                      * we'll have lots of problems with late pictures */
 902                     display_date = current_date + p_vout->render_time;
 903                 }
 904             }
 905         }
 906
 907         if( p_picture == NULL )
 908         {
 909             i_idle_loops++;
 910         }
 911
 912         if( p_picture )
 913         {
 914             p_picture = filter_chain_VideoFilter( p_vout->p_vf2_chain,
 915                                                   p_picture );
 916         }
 917
 918         if( p_picture && p_vout->b_snapshot )
 919         {
 920             p_vout->b_snapshot = false;
 921             vout_Snapshot( p_vout, p_picture );
 922         }
 923
 924         /*
 925          * Check for subpictures to display
 926          */
 927         if( display_date > 0 )
 928         {
 929             if( !p_input )
 930             {
 931                 p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
 932                                            FIND_PARENT );
 933             }
 934             p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date,
 935             p_input ? var_GetBool( p_input, "state" ) == PAUSE_S : false );
 936             if( p_input )
 937                 vlc_object_release( p_input );
 938             p_input = NULL;
 939         }
 940
 941         /*
 942          * Perform rendering
 943          */
 944         i_displayed++;
 945         p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );
 946
 947         /*
 948          * Call the plugin-specific rendering method if there is one
 949          */
 950         if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
 951         {
 952             /* Render the direct buffer returned by vout_RenderPicture */
 953             p_vout->pf_render( p_vout, p_directbuffer );
 954         }
 955
 956         /*
 957          * Sleep, wake up
 958          */
 959         if( display_date != 0 && p_directbuffer != NULL )
 960         {
 961             mtime_t current_render_time = mdate() - current_date;
 962             /* if render time is very large we don't include it in the mean */
 963             if( current_render_time < p_vout->render_time +
 964                 VOUT_DISPLAY_DELAY )
 965             {
 966                 /* Store render time using a sliding mean weighting to
 967                  * current value in a 3 to 1 ratio*/
 968                 p_vout->render_time *= 3;
 969                 p_vout->render_time += current_render_time;
 970                 p_vout->render_time >>= 2;
 971             }
 972         }
 973
 974         /* Give back change lock */
 975         vlc_mutex_unlock( &p_vout->change_lock );
 976
 977         vlc_object_unlock( p_vout );
 978
 979         /* Sleep a while or until a given date */
 980         if( display_date != 0 )
 981         {
 982             /* If there are filters in the chain, better give them the picture
 983              * in advance */
 984             if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
 985             {
 986                 mwait( display_date - VOUT_MWAIT_TOLERANCE );
 987             }
 988         }
 989         else
 990         {
 991             msleep( VOUT_IDLE_SLEEP );
 992         }
 993
 994         /* On awakening, take back lock and send immediately picture
 995          * to display. */
 996         vlc_object_lock( p_vout );
 997         /* Note: vlc_object_alive() could be false here, and we
 998          * could be dead */
 999         vlc_mutex_lock( &p_vout->change_lock );
1000
1001         /*
1002          * Display the previously rendered picture
1003          */
1004         if( p_picture != NULL && p_directbuffer != NULL )
1005         {
1006             /* Display the direct buffer returned by vout_RenderPicture */
1007             if( p_vout->pf_display )
1008             {
1009                 p_vout->pf_display( p_vout, p_directbuffer );
1010             }
1011
1012             /* Tell the vout this was the last picture and that it does not
1013              * need to be forced anymore. */
1014             p_last_picture = p_picture;
1015             p_last_picture->b_force = 0;
1016         }
1017
1018         if( p_picture != NULL )
1019         {
1020             /* Reinitialize idle loop count */
1021             i_idle_loops = 0;
1022         }
1023
1024         /*
1025          * Check events and manage thread
1026          */
1027         if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
1028         {
1029             /* A fatal error occurred, and the thread must terminate
1030              * immediately, without displaying anything - setting b_error to 1
1031              * causes the immediate end of the main while() loop. */
1032             // FIXME pf_end
1033             p_vout->b_error = 1;
1034             break;
1035         }
1036
1037         if( p_vout->i_changes & VOUT_SIZE_CHANGE )
1038         {
1039             /* this must only happen when the vout plugin is incapable of
1040              * rescaling the picture itself. In this case we need to destroy
1041              * the current picture buffers and recreate new ones with the right
1042              * dimensions */
1043             int i;
1044
1045             p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
1046
1047             assert( !p_vout->b_direct );
1048
1049             ChromaDestroy( p_vout );
1050
1051             vlc_mutex_lock( &p_vout->picture_lock );
1052
1053             p_vout->pf_end( p_vout );
1054
1055             for( i = 0; i < I_OUTPUTPICTURES; i++ )
1056                  p_vout->p_picture[ i ].i_status = FREE_PICTURE;
1057
1058             I_OUTPUTPICTURES = 0;
1059
1060             if( p_vout->pf_init( p_vout ) )
1061             {
1062                 msg_Err( p_vout, "cannot resize display" );
1063                 /* FIXME: pf_end will be called again in EndThread() */
1064                 p_vout->b_error = 1;
1065             }
1066
1067             vlc_mutex_unlock( &p_vout->picture_lock );
1068
1069             /* Need to reinitialise the chroma plugin. Since we might need
1070              * resizing too and it's not sure that we already had it,
1071              * recreate the chroma plugin chain from scratch. */
1072             /* dionoea */
1073             if( ChromaCreate( p_vout ) )
1074             {
1075                 msg_Err( p_vout, "WOW THIS SUCKS BIG TIME!!!!!" );
1076                 p_vout->b_error = 1;
1077             }
1078             if( p_vout->b_error )
1079                 break;
1080         }
1081
1082         if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
1083         {
1084             /* This happens when the picture buffers need to be recreated.
1085              * This is useful on multimonitor displays for instance.
1086              *
1087              * Warning: This only works when the vout creates only 1 picture
1088              * buffer!! */
1089             p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;
1090
1091             if( !p_vout->b_direct )
1092                 ChromaDestroy( p_vout );
1093
1094             vlc_mutex_lock( &p_vout->picture_lock );
1095
1096             p_vout->pf_end( p_vout );
1097
1098             I_OUTPUTPICTURES = I_RENDERPICTURES = 0;
1099
1100             p_vout->b_error = InitThread( p_vout );
1101             if( p_vout->b_error )
1102                 msg_Err( p_vout, "InitThread after VOUT_PICTURE_BUFFERS_CHANGE failed\n" );
1103
1104             vlc_mutex_unlock( &p_vout->picture_lock );
1105
1106             if( p_vout->b_error )
1107                 break;
1108         }
1109
1110         /* Check for "video filter2" changes */
1111         vlc_mutex_lock( &p_vout->vfilter_lock );
1112         if( p_vout->psz_vf2 )
1113         {
1114             es_format_t fmt;
1115
1116             es_format_Init( &fmt, VIDEO_ES, p_vout->fmt_render.i_chroma );
1117             fmt.video = p_vout->fmt_render;
1118             filter_chain_Reset( p_vout->p_vf2_chain, &fmt, &fmt );
1119
1120             if( filter_chain_AppendFromString( p_vout->p_vf2_chain,
1121                                                p_vout->psz_vf2 ) < 0 )
1122                 msg_Err( p_vout, "Video filter chain creation failed" );
1123
1124             free( p_vout->psz_vf2 );
1125             p_vout->psz_vf2 = NULL;
1126         }
1127         vlc_mutex_unlock( &p_vout->vfilter_lock );
1128     }
1129
1130
1131     if( p_input )
1132     {
1133         vlc_object_release( p_input );
1134     }
1135
1136     /*
1137      * Error loop - wait until the thread destruction is requested
1138      */
1139     if( p_vout->b_error )
1140         ErrorThread( p_vout );
1141
1142     /* End of thread */
1143     CleanThread( p_vout );
1144     EndThread( p_vout );
1145     vlc_mutex_unlock( &p_vout->change_lock );
1146
1147     vlc_object_unlock( p_vout );
1148 }
1149
1150 /*****************************************************************************
1151  * ErrorThread: RunThread() error loop
1152  *****************************************************************************
1153  * This function is called when an error occurred during thread main's loop.
1154  * The thread can still receive feed, but must be ready to terminate as soon
1155  * as possible.
1156  *****************************************************************************/
1157 static void ErrorThread( vout_thread_t *p_vout )
1158 {
1159     /* Wait until a `die' order */
1160     while( vlc_object_alive( p_vout ) )
1161         vlc_object_wait( p_vout );
1162 }
1163
1164 /*****************************************************************************
1165  * CleanThread: clean up after InitThread
1166  *****************************************************************************
1167  * This function is called after a sucessful
1168  * initialization. It frees all resources allocated by InitThread.
1169  * XXX You have to enter it with change_lock taken.
1170  *****************************************************************************/
1171 static void CleanThread( vout_thread_t *p_vout )
1172 {
1173     int     i_index;                                        /* index in heap */
1174
1175     if( !p_vout->b_direct )
1176         ChromaDestroy( p_vout );
1177
1178     /* Destroy all remaining pictures */
1179     for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
1180     {
1181         if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
1182         {
1183             free( p_vout->p_picture[i_index].p_data_orig );
1184         }
1185     }
1186
1187     /* Destroy translation tables */
1188     if( !p_vout->b_error )
1189         p_vout->pf_end( p_vout );
1190 }
1191
1192 /*****************************************************************************
1193  * EndThread: thread destruction
1194  *****************************************************************************
1195  * This function is called when the thread ends.
1196  * It frees all resources not allocated by InitThread.
1197  * XXX You have to enter it with change_lock taken.
1198  *****************************************************************************/
1199 static void EndThread( vout_thread_t *p_vout )
1200 {
1201 #ifdef STATS
1202     {
1203         struct tms cpu_usage;
1204         times( &cpu_usage );
1205
1206         msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
1207                  cpu_usage.tms_utime, cpu_usage.tms_stime );
1208     }
1209 #endif
1210
1211     /* FIXME does that function *really* need to be called inside the thread ? */
1212
1213     /* Destroy subpicture unit */
1214     spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), false );
1215     spu_Destroy( p_vout->p_spu );
1216
1217     /* Destroy the video filters2 */
1218     filter_chain_Delete( p_vout->p_vf2_chain );
1219 }
1220
1221 /* Thread helpers */
1222 static picture_t *ChromaGetPicture( filter_t *p_filter )
1223 {
1224     picture_t *p_pic = (picture_t *)p_filter->p_owner;
1225     p_filter->p_owner = NULL;
1226     return p_pic;
1227 }
1228
1229 static void ChromaCopyRgbInfo( es_format_t *p_fmt, picture_heap_t *p_heap )
1230 {
1231     p_fmt->video.i_rmask = p_heap->i_rmask;
1232     p_fmt->video.i_gmask = p_heap->i_gmask;
1233     p_fmt->video.i_bmask = p_heap->i_bmask;
1234     p_fmt->video.i_rrshift = p_heap->i_rrshift;
1235     p_fmt->video.i_lrshift = p_heap->i_lrshift;
1236     p_fmt->video.i_rgshift = p_heap->i_rgshift;
1237     p_fmt->video.i_lgshift = p_heap->i_lgshift;
1238     p_fmt->video.i_rbshift = p_heap->i_rbshift;
1239     p_fmt->video.i_lbshift = p_heap->i_lbshift;
1240 }
1241
1242 static int ChromaCreate( vout_thread_t *p_vout )
1243 {
1244     filter_t *p_chroma;
1245
1246     /* Choose the best module */
1247     p_chroma = p_vout->p_chroma = vlc_object_create( p_vout, sizeof(filter_t) );
1248
1249     vlc_object_attach( p_chroma, p_vout );
1250
1251     /* TODO: Set the fmt_in and fmt_out stuff here */
1252     p_chroma->fmt_in.video = p_vout->fmt_render;
1253     p_chroma->fmt_out.video = p_vout->fmt_out;
1254     ChromaCopyRgbInfo( &p_chroma->fmt_in, &p_vout->render );
1255     ChromaCopyRgbInfo( &p_chroma->fmt_out, &p_vout->output );
1256
1257     p_chroma->p_module = module_Need( p_chroma, "video filter2", NULL, 0 );
1258
1259     if( p_chroma->p_module == NULL )
1260     {
1261         msg_Err( p_vout, "no chroma module for %4.4s to %4.4s i=%dx%d o=%dx%d",
1262                  (char*)&p_vout->render.i_chroma,
1263                  (char*)&p_vout->output.i_chroma,
1264                  p_chroma->fmt_in.video.i_width, p_chroma->fmt_in.video.i_height,
1265                  p_chroma->fmt_out.video.i_width, p_chroma->fmt_out.video.i_height
1266                  );
1267
1268         vlc_object_release( p_vout->p_chroma );
1269         p_vout->p_chroma = NULL;
1270         return VLC_EGENERIC;
1271     }
1272     p_chroma->pf_vout_buffer_new = ChromaGetPicture;
1273     return VLC_SUCCESS;
1274 }
1275
1276 static void ChromaDestroy( vout_thread_t *p_vout )
1277 {
1278     assert( !p_vout->b_direct );
1279
1280     if( !p_vout->p_chroma )
1281         return;
1282
1283     module_Unneed( p_vout->p_chroma, p_vout->p_chroma->p_module );
1284     vlc_object_release( p_vout->p_chroma );
1285     p_vout->p_chroma = NULL;
1286 }
1287
1288
1289
1290 /* following functions are local */
1291
1292 static int ReduceHeight( int i_ratio )
1293 {
1294     int i_dummy = VOUT_ASPECT_FACTOR;
1295     int i_pgcd  = 1;
1296
1297     if( !i_ratio )
1298     {
1299         return i_pgcd;
1300     }
1301
1302     /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
1303     while( !(i_ratio & 1) && !(i_dummy & 1) )
1304     {
1305         i_ratio >>= 1;
1306         i_dummy >>= 1;
1307         i_pgcd  <<= 1;
1308     }
1309
1310     while( !(i_ratio % 3) && !(i_dummy % 3) )
1311     {
1312         i_ratio /= 3;
1313         i_dummy /= 3;
1314         i_pgcd  *= 3;
1315     }
1316
1317     while( !(i_ratio % 5) && !(i_dummy % 5) )
1318     {
1319         i_ratio /= 5;
1320         i_dummy /= 5;
1321         i_pgcd  *= 5;
1322     }
1323
1324     return i_pgcd;
1325 }
1326
1327 static void AspectRatio( int i_aspect, int *i_aspect_x, int *i_aspect_y )
1328 {
1329     unsigned int i_pgcd = ReduceHeight( i_aspect );
1330     *i_aspect_x = i_aspect / i_pgcd;
1331     *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
1332 }
1333
1334 /*****************************************************************************
1335  * BinaryLog: computes the base 2 log of a binary value
1336  *****************************************************************************
1337  * This functions is used by MaskToShift, to get a bit index from a binary
1338  * value.
1339  *****************************************************************************/
1340 static int BinaryLog( uint32_t i )
1341 {
1342     int i_log = 0;
1343
1344     if( i == 0 ) return -31337;
1345
1346     if( i & 0xffff0000 ) i_log += 16;
1347     if( i & 0xff00ff00 ) i_log += 8;
1348     if( i & 0xf0f0f0f0 ) i_log += 4;
1349     if( i & 0xcccccccc ) i_log += 2;
1350     if( i & 0xaaaaaaaa ) i_log += 1;
1351
1352     return i_log;
1353 }
1354
1355 /*****************************************************************************
1356  * MaskToShift: transform a color mask into right and left shifts
1357  *****************************************************************************
1358  * This function is used for obtaining color shifts from masks.
1359  *****************************************************************************/
1360 static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
1361 {
1362     uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
1363
1364     if( !i_mask )
1365     {
1366         *pi_left = *pi_right = 0;
1367         return;
1368     }
1369
1370     /* Get bits */
1371     i_low = i_high = i_mask;
1372
1373     i_low &= - (int32_t)i_low;          /* lower bit of the mask */
1374     i_high += i_low;                    /* higher bit of the mask */
1375
1376     /* Transform bits into an index. Also deal with i_high overflow, which
1377      * is faster than changing the BinaryLog code to handle 64 bit integers. */
1378     i_low =  BinaryLog (i_low);
1379     i_high = i_high ? BinaryLog (i_high) : 32;
1380
1381     /* Update pointers and return */
1382     *pi_left =   i_low;
1383     *pi_right = (8 - i_high + i_low);
1384 }
1385
1386 /*****************************************************************************
1387  * vout_VarCallback: generic callback for intf variables
1388  *****************************************************************************/
1389 int vout_VarCallback( vlc_object_t * p_this, const char * psz_variable,
1390                       vlc_value_t oldval, vlc_value_t newval,
1391                       void *p_data )
1392 {
1393     vout_thread_t * p_vout = (vout_thread_t *)p_this;
1394     vlc_value_t val;
1395     (void)psz_variable; (void)newval; (void)oldval; (void)p_data;
1396     val.b_bool = true;
1397     var_Set( p_vout, "intf-change", val );
1398     return VLC_SUCCESS;
1399 }
1400
1401 /*****************************************************************************
1402  * Helper thread for object variables callbacks.
1403  * Only used to avoid deadlocks when using the video embedded mode.
1404  *****************************************************************************/
1405 typedef struct suxor_thread_t
1406 {
1407     VLC_COMMON_MEMBERS
1408     input_thread_t *p_input;
1409
1410 } suxor_thread_t;
1411
1412 static void SuxorRestartVideoES( suxor_thread_t *p_this )
1413 {
1414     /* Now restart current video stream */
1415     int val = var_GetInteger( p_this->p_input, "video-es" );
1416     if( val >= 0 )
1417     {
1418         var_SetInteger( p_this->p_input, "video-es", -VIDEO_ES );
1419         var_SetInteger( p_this->p_input, "video-es", val );
1420     }
1421
1422     vlc_object_release( p_this->p_input );
1423
1424     vlc_object_release( p_this );
1425 }
1426
1427 /*****************************************************************************
1428  * object variables callbacks: a bunch of object variables are used by the
1429  * interfaces to interact with the vout.
1430  *****************************************************************************/
1431 static int DeinterlaceCallback( vlc_object_t *p_this, char const *psz_cmd,
1432                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1433 {
1434     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1435     input_thread_t *p_input;
1436     vlc_value_t val;
1437
1438     char *psz_mode = newval.psz_string;
1439     char *psz_filter, *psz_deinterlace = NULL;
1440     (void)psz_cmd; (void)oldval; (void)p_data;
1441
1442     var_Get( p_vout, "vout-filter", &val );
1443     psz_filter = val.psz_string;
1444     if( psz_filter ) psz_deinterlace = strstr( psz_filter, "deinterlace" );
1445
1446     if( !psz_mode || !*psz_mode )
1447     {
1448         if( psz_deinterlace )
1449         {
1450             char *psz_src = psz_deinterlace + sizeof("deinterlace") - 1;
1451             if( psz_src[0] == ':' ) psz_src++;
1452             memmove( psz_deinterlace, psz_src, strlen(psz_src) + 1 );
1453         }
1454     }
1455     else if( !psz_deinterlace )
1456     {
1457         psz_filter = realloc( psz_filter, strlen( psz_filter ) +
1458                               sizeof(":deinterlace") );
1459         if( psz_filter && *psz_filter ) strcat( psz_filter, ":" );
1460         strcat( psz_filter, "deinterlace" );
1461     }
1462
1463     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1464                                                  FIND_PARENT );
1465     if( !p_input ) return VLC_EGENERIC;
1466
1467     if( psz_mode && *psz_mode )
1468     {
1469         /* Modify input as well because the vout might have to be restarted */
1470         val.psz_string = psz_mode;
1471         var_Create( p_input, "deinterlace-mode", VLC_VAR_STRING );
1472         var_Set( p_input, "deinterlace-mode", val );
1473     }
1474     vlc_object_release( p_input );
1475
1476     val.b_bool = true;
1477     var_Set( p_vout, "intf-change", val );
1478
1479     val.psz_string = psz_filter;
1480     var_Set( p_vout, "vout-filter", val );
1481     free( psz_filter );
1482
1483     return VLC_SUCCESS;
1484 }
1485
1486 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
1487                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1488 {
1489     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1490     input_thread_t *p_input;
1491     vlc_value_t val;
1492     (void)psz_cmd; (void)oldval; (void)p_data;
1493
1494     p_input = (input_thread_t *)vlc_object_find( p_this, VLC_OBJECT_INPUT,
1495                                                  FIND_PARENT );
1496     if (!p_input)
1497     {
1498         msg_Err( p_vout, "Input not found" );
1499         return( VLC_EGENERIC );
1500     }
1501
1502     val.b_bool = true;
1503     var_Set( p_vout, "intf-change", val );
1504
1505     /* Modify input as well because the vout might have to be restarted */
1506     val.psz_string = newval.psz_string;
1507     var_Create( p_input, "vout-filter", VLC_VAR_STRING );
1508
1509     var_Set( p_input, "vout-filter", val );
1510
1511     /* Now restart current video stream */
1512     var_Get( p_input, "video-es", &val );
1513     if( val.i_int >= 0 )
1514     {
1515         suxor_thread_t *p_suxor =
1516             vlc_object_create( p_vout, sizeof(suxor_thread_t) );
1517         p_suxor->p_input = p_input;
1518         p_vout->b_filter_change = true;
1519         vlc_object_yield( p_input );
1520         vlc_thread_create( p_suxor, "suxor", SuxorRestartVideoES,
1521                            VLC_THREAD_PRIORITY_LOW, false );
1522     }
1523
1524     vlc_object_release( p_input );
1525
1526     return VLC_SUCCESS;
1527 }
1528
1529 /*****************************************************************************
1530  * Video Filter2 stuff
1531  *****************************************************************************/
1532 static int VideoFilter2Callback( vlc_object_t *p_this, char const *psz_cmd,
1533                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1534 {
1535     vout_thread_t *p_vout = (vout_thread_t *)p_this;
1536     (void)psz_cmd; (void)oldval; (void)p_data;
1537
1538     vlc_mutex_lock( &p_vout->vfilter_lock );
1539     p_vout->psz_vf2 = strdup( newval.psz_string );
1540     vlc_mutex_unlock( &p_vout->vfilter_lock );
1541
1542     return VLC_SUCCESS;
1543 }
1544
1545 static void DisplayTitleOnOSD( vout_thread_t *p_vout )
1546 {
1547     input_thread_t *p_input;
1548     mtime_t i_now, i_stop;
1549
1550     p_input = (input_thread_t *)vlc_object_find( p_vout,
1551               VLC_OBJECT_INPUT, FIND_ANYWHERE );
1552     if( p_input )
1553     {
1554         i_now = mdate();
1555         i_stop = i_now + (mtime_t)(p_vout->i_title_timeout * 1000);
1556         char *psz_nowplaying =
1557             input_item_GetNowPlaying( input_GetItem( p_input ) );
1558         char *psz_artist = input_item_GetArtist( input_GetItem( p_input ) );
1559         char *psz_name = input_item_GetTitle( input_GetItem( p_input ) );
1560         if( EMPTY_STR( psz_name ) )
1561         {
1562             free( psz_name );
1563             psz_name = input_item_GetName( input_GetItem( p_input ) );
1564         }
1565         if( !EMPTY_STR( psz_nowplaying ) )
1566         {
1567             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1568                                    psz_nowplaying, NULL,
1569                                    p_vout->i_title_position,
1570                                    30 + p_vout->fmt_in.i_width
1571                                       - p_vout->fmt_in.i_visible_width
1572                                       - p_vout->fmt_in.i_x_offset,
1573                                    20 + p_vout->fmt_in.i_y_offset,
1574                                    i_now, i_stop );
1575         }
1576         else if( !EMPTY_STR( psz_artist ) )
1577         {
1578             char *psz_string = NULL;
1579             if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
1580             {
1581                 vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1582                                        psz_string, NULL,
1583                                        p_vout->i_title_position,
1584                                        30 + p_vout->fmt_in.i_width
1585                                           - p_vout->fmt_in.i_visible_width
1586                                           - p_vout->fmt_in.i_x_offset,
1587                                        20 + p_vout->fmt_in.i_y_offset,
1588                                        i_now, i_stop );
1589                 free( psz_string );
1590             }
1591         }
1592         else
1593         {
1594             vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN,
1595                                    psz_name, NULL,
1596                                    p_vout->i_title_position,
1597                                    30 + p_vout->fmt_in.i_width
1598                                       - p_vout->fmt_in.i_visible_width
1599                                       - p_vout->fmt_in.i_x_offset,
1600                                    20 + p_vout->fmt_in.i_y_offset,
1601                                    i_now, i_stop );
1602         }
1603         vlc_object_release( p_input );
1604         free( psz_artist );
1605         free( psz_name );
1606         free( psz_nowplaying );
1607     }
1608 }
1609