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