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

   1 /*****************************************************************************
   2  * osd.c - The OSD Menu core code.
   3  *****************************************************************************
   4  * Copyright (C) 2005-2008 M2X
   5  * $Id$
   6  *
   7  * Authors: Jean-Paul Saman <jpsaman #_at_# m2x dot nl>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <math.h>
  33 #include <vlc_common.h>
  34 #include <vlc_keys.h>
  35 #include <vlc_osd.h>
  36 #include <vlc_image.h>
  37 #include <vlc_modules.h>
  38 #include <vlc_playlist.h>
  39
  40 #include "libvlc.h"
  41
  42 #undef OSD_MENU_DEBUG
  43
  44 /*****************************************************************************
  45  * Local prototypes
  46  *****************************************************************************/
  47
  48 static void osd_UpdateState( osd_menu_state_t *, int, int, int, int, picture_t * );
  49 static inline osd_state_t *osd_VolumeStateChange( osd_state_t *, int );
  50 static bool osd_ParserLoad( osd_menu_t *, const char * );
  51 static void osd_ParserUnload( osd_menu_t * );
  52
  53 static inline bool osd_isVisible( osd_menu_t *p_osd )
  54 {
  55     return var_GetBool( p_osd, "osd-menu-visible" );
  56 }
  57
  58 static vlc_mutex_t osd_mutex = VLC_STATIC_MUTEX;
  59
  60 /*****************************************************************************
  61  * Wrappers for loading and unloading osd parser modules.
  62  *****************************************************************************/
  63 static bool osd_ParserLoad( osd_menu_t *p_menu, const char *psz_file )
  64 {
  65     /* Stuff needed for Parser */
  66     p_menu->psz_file = strdup( psz_file );
  67     p_menu->p_image = image_HandlerCreate( p_menu );
  68     if( !p_menu->p_image || !p_menu->psz_file )
  69     {
  70         msg_Err( p_menu, "unable to load images, aborting .." );
  71         return false;
  72     }
  73     else
  74     {
  75         const char *psz_type;
  76         const char *psz_ext = strrchr( p_menu->psz_file, '.' );
  77
  78         if( psz_ext && !strcmp( psz_ext, ".cfg") )
  79             psz_type = "import-osd";
  80         else
  81             psz_type = "import-osd-xml";
  82
  83         p_menu->p_parser = module_need( p_menu, "osd parser",
  84                                         psz_type, true );
  85         if( !p_menu->p_parser )
  86         {
  87             return false;
  88         }
  89     }
  90     return true;
  91 }
  92
  93 static void osd_ParserUnload( osd_menu_t *p_menu )
  94 {
  95     if( p_menu->p_image )
  96         image_HandlerDelete( p_menu->p_image );
  97
  98     if( p_menu->p_parser )
  99         module_unneed( p_menu, p_menu->p_parser );
 100
 101     free( p_menu->psz_file );
 102 }
 103
 104 /**
 105  * Change state on an osd_button_t.
 106  *
 107  * This function selects the specified state and returns a pointer
 108  * vlc_custom_create to it. The following states are currently supported:
 109  * \see OSD_BUTTON_UNSELECT
 110  * \see OSD_BUTTON_SELECT
 111  * \see OSD_BUTTON_PRESSED
 112  */
 113 static osd_state_t *osd_StateChange( osd_button_t *p_button, const int i_state )
 114 {
 115     osd_state_t *p_current = p_button->p_states;
 116     osd_state_t *p_temp = NULL;
 117     int i = 0;
 118
 119     for( i= 0; p_current != NULL; i++ )
 120     {
 121         if( p_current->i_state == i_state )
 122         {
 123             p_button->i_x = p_current->i_x;
 124             p_button->i_y = p_current->i_y;
 125             p_button->i_width = p_current->i_width;
 126             p_button->i_height = p_current->i_height;
 127             return p_current;
 128         }
 129         p_temp = p_current->p_next;
 130         p_current = p_temp;
 131     }
 132     return p_button->p_states;
 133 }
 134
 135 #undef osd_MenuCreate
 136 /*****************************************************************************
 137  * OSD menu Funtions
 138  *****************************************************************************/
 139 osd_menu_t *osd_MenuCreate( vlc_object_t *p_this, const char *psz_file )
 140 {
 141     osd_menu_t  *p_osd = NULL;
 142     vlc_value_t val;
 143
 144     /* to be sure to avoid multiple creation */
 145     vlc_mutex_lock( &osd_mutex );
 146
 147     var_Create( p_this->p_libvlc, "osd-object", VLC_VAR_ADDRESS );
 148     var_Get( p_this->p_libvlc, "osd-object", &val );
 149     if( val.p_address == NULL )
 150     {
 151         p_osd = vlc_custom_create( p_this->p_libvlc, sizeof( *p_osd ),
 152                                    "osd menu" );
 153         if( !p_osd )
 154             return NULL;
 155
 156         p_osd->p_parser = NULL;
 157
 158         /* Parse configuration file */
 159         if ( !osd_ParserLoad( p_osd, psz_file ) )
 160             goto error;
 161         if( !p_osd->p_state )
 162             goto error;
 163
 164         /* Setup default button (first button) */
 165         p_osd->p_state->p_visible = p_osd->p_button;
 166         p_osd->p_state->p_visible->p_current_state =
 167             osd_StateChange( p_osd->p_state->p_visible, OSD_BUTTON_SELECT );
 168         p_osd->i_width  = p_osd->p_state->p_visible->p_current_state->p_pic->p[Y_PLANE].i_visible_pitch;
 169         p_osd->i_height = p_osd->p_state->p_visible->p_current_state->p_pic->p[Y_PLANE].i_visible_lines;
 170
 171         if( p_osd->p_state->p_volume )
 172         {
 173             /* Update the volume state images to match the current volume */
 174             float vol = playlist_VolumeGet( pl_Get(p_this) );
 175             if( vol >= 0.f )
 176             {
 177                 vol *= (float)AOUT_VOLUME_DEFAULT;
 178                 vol /= var_InheritInteger( p_this, "volume-step" );
 179                 p_osd->p_state->p_volume->p_current_state =
 180                     osd_VolumeStateChange( p_osd->p_state->p_volume->p_states,
 181                                            lroundf(vol) );
 182             }
 183         }
 184         /* Initialize OSD state */
 185         osd_UpdateState( p_osd->p_state, p_osd->i_x, p_osd->i_y,
 186                          p_osd->i_width, p_osd->i_height, NULL );
 187
 188         /* Signal when an update of OSD menu is needed */
 189         var_Create( p_osd, "osd-menu-update", VLC_VAR_BOOL );
 190         var_Create( p_osd, "osd-menu-visible", VLC_VAR_BOOL );
 191
 192         var_SetBool( p_osd, "osd-menu-update", false );
 193         var_SetBool( p_osd, "osd-menu-visible", false );
 194
 195         var_SetAddress( p_this->p_libvlc, "osd-object", p_osd );
 196     }
 197     else
 198         p_osd = val.p_address;
 199     vlc_object_hold( p_osd );
 200     vlc_mutex_unlock( &osd_mutex );
 201     return p_osd;
 202
 203 error:
 204     vlc_mutex_unlock( &osd_mutex );
 205     osd_MenuDelete( p_this, p_osd );
 206     return NULL;
 207 }
 208
 209 #undef osd_MenuDelete
 210 void osd_MenuDelete( vlc_object_t *p_this, osd_menu_t *p_osd )
 211 {
 212     if( !p_osd || !p_this ) return;
 213
 214     vlc_mutex_lock( &osd_mutex );
 215
 216     if( vlc_internals( VLC_OBJECT(p_osd) )->i_refcount == 1 )
 217     {
 218         var_Destroy( p_osd, "osd-menu-visible" );
 219         var_Destroy( p_osd, "osd-menu-update" );
 220         osd_ParserUnload( p_osd );
 221         var_SetAddress( p_this->p_libvlc, "osd-object", NULL );
 222     }
 223
 224     vlc_object_release( p_osd );
 225     vlc_mutex_unlock( &osd_mutex );
 226 }
 227
 228 static osd_menu_t *osd_Find( vlc_object_t *p_this, bool visible,
 229                              const char *func )
 230 {
 231     osd_menu_t *menu;
 232
 233     vlc_mutex_lock( &osd_mutex );
 234     menu = var_GetAddress( p_this->p_libvlc, "osd-object" );
 235     if( menu == NULL || ( visible && !osd_isVisible(menu) ) )
 236     {
 237         vlc_mutex_unlock( &osd_mutex );
 238         msg_Err( p_this, "%s failed", func );
 239     }
 240     return menu;
 241 }
 242 #define osd_Find(o) (osd_Find)(o, false, __func__)
 243 #define osd_FindVisible(o) (osd_Find)(o, true, __func__)
 244
 245 /* The volume can be modified in another interface while the OSD Menu
 246  * has not been instantiated yet. This routines updates the "volume OSD menu item"
 247  * to reflect the current state of the GUI.
 248  */
 249 static inline osd_state_t *osd_VolumeStateChange( osd_state_t *p_current, int i_steps )
 250 {
 251     osd_state_t *p_temp = NULL;
 252     int i;
 253
 254     if( i_steps < 0 ) i_steps = 0;
 255
 256     for( i=0; (i < i_steps) && (p_current != NULL); i++ )
 257     {
 258         p_temp = p_current->p_next;
 259         if( !p_temp ) return p_current;
 260         p_current = p_temp;
 261     }
 262     return (!p_temp) ? p_current : p_temp;
 263 }
 264
 265 /* Update the state of the OSD Menu */
 266 static void osd_UpdateState( osd_menu_state_t *p_state, int i_x, int i_y,
 267         int i_width, int i_height, picture_t *p_pic )
 268 {
 269     p_state->i_x = i_x;
 270     p_state->i_y = i_y;
 271     p_state->i_width = i_width;
 272     p_state->i_height = i_height;
 273     p_state->p_pic = p_pic;
 274 }
 275
 276 #undef osd_MenuShow
 277 void osd_MenuShow( vlc_object_t *p_this )
 278 {
 279     osd_button_t *p_button = NULL;
 280
 281     osd_menu_t *p_osd = osd_Find( p_this );
 282     if( p_osd == NULL )
 283         return;
 284
 285 #if defined(OSD_MENU_DEBUG)
 286     msg_Dbg( p_osd, "menu on" );
 287 #endif
 288     p_button = p_osd->p_state->p_visible;
 289     if( p_button )
 290     {
 291         if( !p_button->b_range )
 292             p_button->p_current_state = osd_StateChange( p_button, OSD_BUTTON_UNSELECT );
 293         p_osd->p_state->p_visible = p_osd->p_button;
 294
 295         if( !p_osd->p_state->p_visible->b_range )
 296             p_osd->p_state->p_visible->p_current_state =
 297                 osd_StateChange( p_osd->p_state->p_visible, OSD_BUTTON_SELECT );
 298
 299         osd_UpdateState( p_osd->p_state,
 300                 p_osd->p_state->p_visible->i_x, p_osd->p_state->p_visible->i_y,
 301                 p_osd->p_state->p_visible->p_current_state->i_width,
 302                 p_osd->p_state->p_visible->p_current_state->i_height,
 303                 p_osd->p_state->p_visible->p_current_state->p_pic );
 304         osd_SetMenuUpdate( p_osd, true );
 305     }
 306     osd_SetMenuVisible( p_osd, true );
 307
 308     vlc_mutex_unlock( &osd_mutex );
 309 }
 310
 311 #undef osd_MenuHide
 312 void osd_MenuHide( vlc_object_t *p_this )
 313 {
 314     osd_menu_t *p_osd = osd_Find( p_this );
 315     if( p_osd == NULL )
 316         return;
 317
 318 #if defined(OSD_MENU_DEBUG)
 319     msg_Dbg( p_osd, "menu off" );
 320 #endif
 321     osd_UpdateState( p_osd->p_state,
 322                 p_osd->p_state->i_x, p_osd->p_state->i_y,
 323                 0, 0, NULL );
 324     osd_SetMenuUpdate( p_osd, true );
 325
 326     vlc_mutex_unlock( &osd_mutex );
 327 }
 328
 329 #undef osd_MenuActivate
 330 void osd_MenuActivate( vlc_object_t *p_this )
 331 {
 332     osd_button_t *p_button = NULL;
 333
 334     osd_menu_t *p_osd = osd_FindVisible( p_this );
 335     if( p_osd == NULL )
 336         return;
 337
 338 #if defined(OSD_MENU_DEBUG)
 339     msg_Dbg( p_osd, "select" );
 340 #endif
 341     p_button = p_osd->p_state->p_visible;
 342     /*
 343      * Is there a menu item above or below? If so, then select it.
 344      */
 345     if( p_button && p_button->p_up )
 346     {
 347         vlc_mutex_unlock( &osd_mutex );
 348         osd_MenuUp( p_this );   /* "menu select" means go to menu item above. */
 349         return;
 350     }
 351     if( p_button && p_button->p_down )
 352     {
 353         vlc_mutex_unlock( &osd_mutex );
 354         osd_MenuDown( p_this ); /* "menu select" means go to menu item below. */
 355         return;
 356     }
 357
 358     if( p_button && !p_button->b_range )
 359     {
 360         p_button->p_current_state = osd_StateChange( p_button, OSD_BUTTON_PRESSED );
 361         osd_UpdateState( p_osd->p_state,
 362                 p_button->i_x, p_button->i_y,
 363                 p_osd->p_state->p_visible->p_current_state->i_width,
 364                 p_osd->p_state->p_visible->p_current_state->i_height,
 365                 p_button->p_current_state->p_pic );
 366         osd_SetMenuUpdate( p_osd, true );
 367         osd_SetMenuVisible( p_osd, true );
 368         osd_SetKeyPressed( VLC_OBJECT(p_osd->p_libvlc),
 369                            var_InheritInteger( p_osd, p_button->psz_action ) );
 370 #if defined(OSD_MENU_DEBUG)
 371         msg_Dbg( p_osd, "select (%d, %s)",
 372                  (int)var_InheritInteger( p_osd, p_button->psz_action ),
 373                  p_button->psz_action );
 374 #endif
 375     }
 376     vlc_mutex_unlock( &osd_mutex );
 377 }
 378
 379 #undef osd_MenuNext
 380 void osd_MenuNext( vlc_object_t *p_this )
 381 {
 382     osd_button_t *p_button = NULL;
 383
 384     osd_menu_t *p_osd = osd_FindVisible( p_this );
 385     if( p_osd == NULL )
 386         return;
 387
 388     p_button = p_osd->p_state->p_visible;
 389     if( p_button )
 390     {
 391         if( !p_button->b_range )
 392             p_button->p_current_state = osd_StateChange( p_button, OSD_BUTTON_UNSELECT );
 393         if( p_button->p_next )
 394             p_osd->p_state->p_visible = p_button->p_next;
 395         else
 396             p_osd->p_state->p_visible = p_osd->p_button;
 397
 398         if( !p_osd->p_state->p_visible->b_range )
 399             p_osd->p_state->p_visible->p_current_state =
 400                 osd_StateChange( p_osd->p_state->p_visible, OSD_BUTTON_SELECT );
 401
 402         osd_UpdateState( p_osd->p_state,
 403                 p_osd->p_state->p_visible->i_x, p_osd->p_state->p_visible->i_y,
 404                 p_osd->p_state->p_visible->p_current_state->i_width,
 405                 p_osd->p_state->p_visible->p_current_state->i_height,
 406                 p_osd->p_state->p_visible->p_current_state->p_pic );
 407         osd_SetMenuUpdate( p_osd, true );
 408     }
 409 #if defined(OSD_MENU_DEBUG)
 410     msg_Dbg( p_osd, "direction right [button %s]", p_osd->p_state->p_visible->psz_action );
 411 #endif
 412
 413     vlc_mutex_unlock( &osd_mutex );
 414 }
 415
 416 #undef osd_MenuPrev
 417 void osd_MenuPrev( vlc_object_t *p_this )
 418 {
 419     osd_button_t *p_button = NULL;
 420
 421     osd_menu_t *p_osd = osd_FindVisible( p_this );
 422     if( p_osd == NULL )
 423         return;
 424
 425     p_button = p_osd->p_state->p_visible;
 426     if( p_button )
 427     {
 428         if( !p_button->b_range )
 429             p_button->p_current_state = osd_StateChange( p_button, OSD_BUTTON_UNSELECT );
 430         if( p_button->p_prev )
 431             p_osd->p_state->p_visible = p_button->p_prev;
 432         else
 433             p_osd->p_state->p_visible = p_osd->p_last_button;
 434
 435         if( !p_osd->p_state->p_visible->b_range )
 436             p_osd->p_state->p_visible->p_current_state =
 437                 osd_StateChange( p_osd->p_state->p_visible, OSD_BUTTON_SELECT );
 438
 439         osd_UpdateState( p_osd->p_state,
 440                 p_osd->p_state->p_visible->i_x, p_osd->p_state->p_visible->i_y,
 441                 p_osd->p_state->p_visible->p_current_state->i_width,
 442                 p_osd->p_state->p_visible->p_current_state->i_height,
 443                 p_osd->p_state->p_visible->p_current_state->p_pic );
 444         osd_SetMenuUpdate( p_osd, true );
 445     }
 446 #if defined(OSD_MENU_DEBUG)
 447     msg_Dbg( p_osd, "direction left [button %s]", p_osd->p_state->p_visible->psz_action );
 448 #endif
 449
 450     vlc_mutex_unlock( &osd_mutex );
 451 }
 452
 453 #undef osd_MenuUp
 454 void osd_MenuUp( vlc_object_t *p_this )
 455 {
 456     osd_button_t *p_button = NULL;
 457 #if defined(OSD_MENU_DEBUG)
 458     vlc_value_t val;
 459 #endif
 460
 461     osd_menu_t *p_osd = osd_FindVisible( p_this );
 462     if( p_osd == NULL )
 463         return;
 464
 465     p_button = p_osd->p_state->p_visible;
 466     if( p_button )
 467     {
 468         if( !p_button->b_range )
 469         {
 470             p_button->p_current_state = osd_StateChange( p_button, OSD_BUTTON_SELECT );
 471             if( p_button->p_up )
 472                 p_osd->p_state->p_visible = p_button->p_up;
 473         }
 474
 475         if( p_button->b_range && p_osd->p_state->p_visible->b_range )
 476         {
 477             osd_state_t *p_temp = p_osd->p_state->p_visible->p_current_state;
 478             if( p_temp && p_temp->p_next )
 479                 p_osd->p_state->p_visible->p_current_state = p_temp->p_next;
 480         }
 481         else if( !p_osd->p_state->p_visible->b_range )
 482         {
 483             p_osd->p_state->p_visible->p_current_state =
 484                 osd_StateChange( p_osd->p_state->p_visible, OSD_BUTTON_SELECT );
 485         }
 486
 487         osd_UpdateState( p_osd->p_state,
 488                 p_osd->p_state->p_visible->i_x, p_osd->p_state->p_visible->i_y,
 489                 p_osd->p_state->p_visible->p_current_state->i_width,
 490                 p_osd->p_state->p_visible->p_current_state->i_height,
 491                 p_osd->p_state->p_visible->p_current_state->p_pic );
 492         osd_SetMenuUpdate( p_osd, true );
 493         /* If this is a range style action with associated images of only one state,
 494             * then perform "menu select" on every menu navigation
 495             */
 496         if( p_button->b_range )
 497         {
 498             osd_SetKeyPressed( VLC_OBJECT(p_osd->p_libvlc),
 499                                var_InheritInteger(p_osd, p_button->psz_action) );
 500 #if defined(OSD_MENU_DEBUG)
 501             msg_Dbg( p_osd, "select (%"PRId64", %s)", val.i_int, p_button->psz_action );
 502 #endif
 503         }
 504     }
 505 #if defined(OSD_MENU_DEBUG)
 506     msg_Dbg( p_osd, "direction up [button %s]", p_osd->p_state->p_visible->psz_action );
 507 #endif
 508
 509     vlc_mutex_unlock( &osd_mutex );
 510 }
 511
 512 #undef osd_MenuDown
 513 void osd_MenuDown( vlc_object_t *p_this )
 514 {
 515     osd_button_t *p_button = NULL;
 516 #if defined(OSD_MENU_DEBUG)
 517     vlc_value_t val;
 518 #endif
 519
 520     osd_menu_t *p_osd = osd_FindVisible( p_this );
 521     if( p_osd == NULL )
 522         return;
 523
 524     p_button = p_osd->p_state->p_visible;
 525     if( p_button )
 526     {
 527         if( !p_button->b_range )
 528         {
 529             p_button->p_current_state = osd_StateChange( p_button, OSD_BUTTON_SELECT );
 530             if( p_button->p_down )
 531                 p_osd->p_state->p_visible = p_button->p_down;
 532         }
 533
 534         if( p_button->b_range && p_osd->p_state->p_visible->b_range )
 535         {
 536             osd_state_t *p_temp = p_osd->p_state->p_visible->p_current_state;
 537             if( p_temp && p_temp->p_prev )
 538                 p_osd->p_state->p_visible->p_current_state = p_temp->p_prev;
 539         }
 540         else if( !p_osd->p_state->p_visible->b_range )
 541         {
 542             p_osd->p_state->p_visible->p_current_state =
 543                 osd_StateChange( p_osd->p_state->p_visible, OSD_BUTTON_SELECT );
 544         }
 545
 546         osd_UpdateState( p_osd->p_state,
 547                 p_osd->p_state->p_visible->i_x, p_osd->p_state->p_visible->i_y,
 548                 p_osd->p_state->p_visible->p_current_state->i_width,
 549                 p_osd->p_state->p_visible->p_current_state->i_height,
 550                 p_osd->p_state->p_visible->p_current_state->p_pic );
 551         osd_SetMenuUpdate( p_osd, true );
 552         /* If this is a range style action with associated images of only one state,
 553          * then perform "menu select" on every menu navigation
 554          */
 555         if( p_button->b_range )
 556         {
 557             osd_SetKeyPressed( VLC_OBJECT(p_osd->p_libvlc),
 558                                var_InheritInteger(p_osd, p_button->psz_action_down) );
 559 #if defined(OSD_MENU_DEBUG)
 560             msg_Dbg( p_osd, "select (%"PRId64", %s)", val.i_int, p_button->psz_action_down );
 561 #endif
 562         }
 563     }
 564 #if defined(OSD_MENU_DEBUG)
 565     msg_Dbg( p_osd, "direction down [button %s]", p_osd->p_state->p_visible->psz_action );
 566 #endif
 567
 568     vlc_mutex_unlock( &osd_mutex );
 569 }
 570
 571 #undef osd_ButtonFind
 572 osd_button_t *osd_ButtonFind( vlc_object_t *p_this, int i_x, int i_y,
 573     int i_window_height, int i_window_width,
 574     int i_scale_width, int i_scale_height )
 575 {
 576     osd_button_t *p_button;
 577
 578     osd_menu_t *p_osd = osd_FindVisible( p_this );
 579     if( p_osd == NULL )
 580         return NULL;
 581
 582     p_button = p_osd->p_button;
 583     for( ; p_button != NULL; p_button = p_button->p_next )
 584     {
 585         int i_source_video_width  = ( i_window_width  * 1000 ) / i_scale_width;
 586         int i_source_video_height = ( i_window_height * 1000 ) / i_scale_height;
 587         int i_y_offset = p_button->i_y;
 588         int i_x_offset = p_button->i_x;
 589         int i_width = p_button->i_width;
 590         int i_height = p_button->i_height;
 591
 592         if( p_osd->i_position > 0 )
 593         {
 594             int i_inv_scale_y = i_source_video_height;
 595             int i_inv_scale_x = i_source_video_width;
 596             int pi_x = 0;
 597
 598             if( p_osd->i_position & SUBPICTURE_ALIGN_BOTTOM )
 599             {
 600                 i_y_offset = i_window_height - p_button->i_height -
 601                     (p_osd->i_y + p_button->i_y) * i_inv_scale_y / 1000;
 602             }
 603             else if ( !(p_osd->i_position & SUBPICTURE_ALIGN_TOP) )
 604             {
 605                 i_y_offset = i_window_height / 2 - p_button->i_height / 2;
 606             }
 607
 608             if( p_osd->i_position & SUBPICTURE_ALIGN_RIGHT )
 609             {
 610                 i_x_offset = i_window_width - p_button->i_width -
 611                     (pi_x + p_button->i_x)
 612                     * i_inv_scale_x / 1000;
 613             }
 614             else if ( !(p_osd->i_position & SUBPICTURE_ALIGN_LEFT) )
 615             {
 616                 i_x_offset = i_window_width / 2 - p_button->i_width / 2;
 617             }
 618
 619             i_width = i_window_width - p_button->i_width - i_inv_scale_x / 1000;
 620             i_height = i_window_height - p_button->i_height - i_inv_scale_y / 1000;
 621         }
 622
 623         // TODO: write for Up / Down case too.
 624         // TODO: handle absolute positioning case
 625         if( ( i_x >= i_x_offset ) && ( i_x <= i_x_offset + i_width ) &&
 626             ( i_y >= i_y_offset ) && ( i_y <= i_y_offset + i_height ) )
 627         {
 628             vlc_mutex_unlock( &osd_mutex );
 629             return p_button;
 630         }
 631     }
 632
 633     vlc_mutex_unlock( &osd_mutex );
 634     return NULL;
 635 }
 636
 637 #undef osd_ButtonSelect
 638 /**
 639  * Select the button provided as the new active button
 640  */
 641 void osd_ButtonSelect( vlc_object_t *p_this, osd_button_t *p_button )
 642 {
 643     osd_button_t *p_old;
 644
 645     osd_menu_t *p_osd = osd_FindVisible( p_this );
 646     if( p_osd == NULL )
 647         return;
 648
 649     p_old = p_osd->p_state->p_visible;
 650     if( p_old )
 651     {
 652         if( !p_old->b_range )
 653             p_old->p_current_state = osd_StateChange( p_old, OSD_BUTTON_UNSELECT );
 654         p_osd->p_state->p_visible = p_button;
 655
 656         if( !p_osd->p_state->p_visible->b_range )
 657             p_osd->p_state->p_visible->p_current_state =
 658                 osd_StateChange( p_osd->p_state->p_visible, OSD_BUTTON_SELECT );
 659
 660         osd_UpdateState( p_osd->p_state,
 661                 p_osd->p_state->p_visible->i_x, p_osd->p_state->p_visible->i_y,
 662                 p_osd->p_state->p_visible->p_current_state->i_width,
 663                 p_osd->p_state->p_visible->p_current_state->i_height,
 664                 p_osd->p_state->p_visible->p_current_state->p_pic );
 665         osd_SetMenuUpdate( p_osd, true );
 666     }
 667 #if defined(OSD_MENU_DEBUG)
 668     msg_Dbg( p_osd, "button selected is [button %s]", p_osd->p_state->p_visible->psz_action );
 669 #endif
 670
 671     vlc_mutex_unlock( &osd_mutex );
 672 }