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