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 <vlc_common.h>
  33 #include <vlc_keys.h>
  34 #include <vlc_osd.h>
  35 #include <vlc_image.h>
  36 #include <vlc_modules.h>
  37
  38 #include "libvlc.h"
  39
  40 #undef OSD_MENU_DEBUG
  41
  42 /*****************************************************************************
  43  * Local prototypes
  44  *****************************************************************************/
  45
  46 static void osd_UpdateState( osd_menu_state_t *, int, int, int, int, picture_t * );
  47 static inline osd_state_t *osd_VolumeStateChange( osd_state_t *, int );
  48 static int osd_VolumeStep( vlc_object_t *, int, int );
  49 static bool osd_ParserLoad( osd_menu_t *, const char * );
  50 static void osd_ParserUnload( osd_menu_t * );
  51
  52 static inline bool osd_isVisible( osd_menu_t *p_osd )
  53 {
  54     return var_GetBool( p_osd, "osd-menu-visible" );
  55 }
  56
  57 static vlc_mutex_t osd_mutex = VLC_STATIC_MUTEX;
  58
  59 /*****************************************************************************
  60  * Wrappers for loading and unloading osd parser modules.
  61  *****************************************************************************/
  62 static bool osd_ParserLoad( osd_menu_t *p_menu, const char *psz_file )
  63 {
  64     /* Stuff needed for Parser */
  65     p_menu->psz_file = strdup( psz_file );
  66     p_menu->p_image = image_HandlerCreate( p_menu );
  67     if( !p_menu->p_image || !p_menu->psz_file )
  68     {
  69         msg_Err( p_menu, "unable to load images, aborting .." );
  70         return false;
  71     }
  72     else
  73     {
  74         const char *psz_type;
  75         const char *psz_ext = strrchr( p_menu->psz_file, '.' );
  76
  77         if( psz_ext && !strcmp( psz_ext, ".cfg") )
  78             psz_type = "import-osd";
  79         else
  80             psz_type = "import-osd-xml";
  81
  82         p_menu->p_parser = module_need( p_menu, "osd parser",
  83                                         psz_type, true );
  84         if( !p_menu->p_parser )
  85         {
  86             return false;
  87         }
  88     }
  89     return true;
  90 }
  91
  92 static void osd_ParserUnload( osd_menu_t *p_menu )
  93 {
  94     if( p_menu->p_image )
  95         image_HandlerDelete( p_menu->p_image );
  96
  97     if( p_menu->p_parser )
  98         module_unneed( p_menu, p_menu->p_parser );
  99
 100     free( p_menu->psz_file );
 101 }
 102
 103 /**
 104  * Change state on an osd_button_t.
 105  *
 106  * This function selects the specified state and returns a pointer
 107  * vlc_custom_create to it. The following states are currently supported:
 108  * \see OSD_BUTTON_UNSELECT
 109  * \see OSD_BUTTON_SELECT
 110  * \see OSD_BUTTON_PRESSED
 111  */
 112 static osd_state_t *osd_StateChange( osd_button_t *p_button, const int i_state )
 113 {
 114     osd_state_t *p_current = p_button->p_states;
 115     osd_state_t *p_temp = NULL;
 116     int i = 0;
 117
 118     for( i= 0; p_current != NULL; i++ )
 119     {
 120         if( p_current->i_state == i_state )
 121         {
 122             p_button->i_x = p_current->i_x;
 123             p_button->i_y = p_current->i_y;
 124             p_button->i_width = p_current->i_width;
 125             p_button->i_height = p_current->i_height;
 126             return p_current;
 127         }
 128         p_temp = p_current->p_next;
 129         p_current = p_temp;
 130     }
 131     return p_button->p_states;
 132 }
 133
 134 #undef osd_MenuCreate
 135 /*****************************************************************************
 136  * OSD menu Funtions
 137  *****************************************************************************/
 138 osd_menu_t *osd_MenuCreate( vlc_object_t *p_this, const char *psz_file )
 139 {
 140     osd_menu_t  *p_osd = NULL;
 141     vlc_value_t val;
 142     int         i_volume = 0;
 143     int         i_steps = 0;
 144
 145     /* to be sure to avoid multiple creation */
 146     vlc_mutex_lock( &osd_mutex );
 147
 148     var_Create( p_this->p_libvlc, "osd-object", VLC_VAR_ADDRESS );
 149     var_Get( p_this->p_libvlc, "osd-object", &val );
 150     if( val.p_address == NULL )
 151     {
 152         p_osd = vlc_custom_create( p_this->p_libvlc, sizeof( *p_osd ),
 153                                    "osd menu" );
 154         if( !p_osd )
 155             return NULL;
 156
 157         p_osd->p_parser = NULL;
 158
 159         /* Parse configuration file */
 160         if ( !osd_ParserLoad( p_osd, psz_file ) )
 161             goto error;
 162         if( !p_osd->p_state )
 163             goto error;
 164
 165         /* Setup default button (first button) */
 166         p_osd->p_state->p_visible = p_osd->p_button;
 167         p_osd->p_state->p_visible->p_current_state =
 168             osd_StateChange( p_osd->p_state->p_visible, OSD_BUTTON_SELECT );
 169         p_osd->i_width  = p_osd->p_state->p_visible->p_current_state->p_pic->p[Y_PLANE].i_visible_pitch;
 170         p_osd->i_height = p_osd->p_state->p_visible->p_current_state->p_pic->p[Y_PLANE].i_visible_lines;
 171
 172         if( p_osd->p_state->p_volume )
 173         {
 174             /* Update the volume state images to match the current volume */
 175             i_volume = config_GetInt( p_this, "volume" );
 176             i_steps = osd_VolumeStep( p_this, i_volume, p_osd->p_state->p_volume->i_ranges );
 177             p_osd->p_state->p_volume->p_current_state = osd_VolumeStateChange(
 178                                     p_osd->p_state->p_volume->p_states, i_steps );
 179         }
 180         /* Initialize OSD state */
 181         osd_UpdateState( p_osd->p_state, p_osd->i_x, p_osd->i_y,
 182                          p_osd->i_width, p_osd->i_height, NULL );
 183
 184         /* Signal when an update of OSD menu is needed */
 185         var_Create( p_osd, "osd-menu-update", VLC_VAR_BOOL );
 186         var_Create( p_osd, "osd-menu-visible", VLC_VAR_BOOL );
 187
 188         var_SetBool( p_osd, "osd-menu-update", false );
 189         var_SetBool( p_osd, "osd-menu-visible", false );
 190
 191         var_SetAddress( p_this->p_libvlc, "osd-object", p_osd );
 192     }
 193     else
 194         p_osd = val.p_address;
 195     vlc_object_hold( p_osd );
 196     vlc_mutex_unlock( &osd_mutex );
 197     return p_osd;
 198
 199 error:
 200     vlc_mutex_unlock( &osd_mutex );
 201     osd_MenuDelete( p_this, p_osd );
 202     return NULL;
 203 }
 204
 205 #undef osd_MenuDelete
 206 void osd_MenuDelete( vlc_object_t *p_this, osd_menu_t *p_osd )
 207 {
 208     if( !p_osd || !p_this ) return;
 209
 210     vlc_mutex_lock( &osd_mutex );
 211
 212     if( vlc_internals( VLC_OBJECT(p_osd) )->i_refcount == 1 )
 213     {
 214         var_Destroy( p_osd, "osd-menu-visible" );
 215         var_Destroy( p_osd, "osd-menu-update" );
 216         osd_ParserUnload( p_osd );
 217         var_SetAddress( p_this->p_libvlc, "osd-object", NULL );
 218     }
 219
 220     vlc_object_release( p_osd );
 221     vlc_mutex_unlock( &osd_mutex );
 222 }
 223
 224 static osd_menu_t *osd_Find( vlc_object_t *p_this, bool visible,
 225                              const char *func )
 226 {
 227     osd_menu_t *menu;
 228
 229     vlc_mutex_lock( &osd_mutex );
 230     menu = var_GetAddress( p_this->p_libvlc, "osd-object" );
 231     if( menu == NULL || ( visible && !osd_isVisible(menu) ) )
 232     {
 233         vlc_mutex_unlock( &osd_mutex );
 234         msg_Err( p_this, "%s failed", func );
 235     }
 236     return menu;
 237 }
 238 #define osd_Find(o) (osd_Find)(o, false, __func__)
 239 #define osd_FindVisible(o) (osd_Find)(o, true, __func__)
 240
 241 /* The volume can be modified in another interface while the OSD Menu
 242  * has not been instantiated yet. This routines updates the "volume OSD menu item"
 243  * to reflect the current state of the GUI.
 244  */
 245 static inline osd_state_t *osd_VolumeStateChange( osd_state_t *p_current, int i_steps )
 246 {
 247     osd_state_t *p_temp = NULL;
 248     int i;
 249
 250     if( i_steps < 0 ) i_steps = 0;
 251
 252     for( i=0; (i < i_steps) && (p_current != NULL); i++ )
 253     {
 254         p_temp = p_current->p_next;
 255         if( !p_temp ) return p_current;
 256         p_current = p_temp;
 257     }
 258     return (!p_temp) ? p_current : p_temp;
 259 }
 260
 261 /* Update the state of the OSD Menu */
 262 static void osd_UpdateState( osd_menu_state_t *p_state, int i_x, int i_y,
 263         int i_width, int i_height, picture_t *p_pic )
 264 {
 265     p_state->i_x = i_x;
 266     p_state->i_y = i_y;
 267     p_state->i_width = i_width;
 268     p_state->i_height = i_height;
 269     p_state->p_pic = p_pic;
 270 }
 271
 272 #undef osd_MenuShow
 273 void osd_MenuShow( vlc_object_t *p_this )
 274 {
 275     osd_button_t *p_button = NULL;
 276
 277     osd_menu_t *p_osd = osd_Find( p_this );
 278     if( p_osd == NULL )
 279         return;
 280
 281 #if defined(OSD_MENU_DEBUG)
 282     msg_Dbg( p_osd, "menu on" );
 283 #endif
 284     p_button = p_osd->p_state->p_visible;
 285     if( p_button )
 286     {
 287         if( !p_button->b_range )
 288             p_button->p_current_state = osd_StateChange( p_button, OSD_BUTTON_UNSELECT );
 289         p_osd->p_state->p_visible = p_osd->p_button;
 290
 291         if( !p_osd->p_state->p_visible->b_range )
 292             p_osd->p_state->p_visible->p_current_state =
 293                 osd_StateChange( p_osd->p_state->p_visible, OSD_BUTTON_SELECT );
 294
 295         osd_UpdateState( p_osd->p_state,
 296                 p_osd->p_state->p_visible->i_x, p_osd->p_state->p_visible->i_y,
 297                 p_osd->p_state->p_visible->p_current_state->i_width,
 298                 p_osd->p_state->p_visible->p_current_state->i_height,
 299                 p_osd->p_state->p_visible->p_current_state->p_pic );
 300         osd_SetMenuUpdate( p_osd, true );
 301     }
 302     osd_SetMenuVisible( p_osd, true );
 303
 304     vlc_mutex_unlock( &osd_mutex );
 305 }
 306
 307 #undef osd_MenuHide
 308 void osd_MenuHide( vlc_object_t *p_this )
 309 {
 310     osd_menu_t *p_osd = osd_Find( p_this );
 311     if( p_osd == NULL )
 312         return;
 313
 314 #if defined(OSD_MENU_DEBUG)
 315     msg_Dbg( p_osd, "menu off" );
 316 #endif
 317     osd_UpdateState( p_osd->p_state,
 318                 p_osd->p_state->i_x, p_osd->p_state->i_y,
 319                 0, 0, NULL );
 320     osd_SetMenuUpdate( p_osd, true );
 321
 322     vlc_mutex_unlock( &osd_mutex );
 323 }
 324
 325 #undef osd_MenuActivate
 326 void osd_MenuActivate( vlc_object_t *p_this )
 327 {
 328     osd_button_t *p_button = NULL;
 329
 330     osd_menu_t *p_osd = osd_FindVisible( p_this );
 331     if( p_osd == NULL )
 332         return;
 333
 334 #if defined(OSD_MENU_DEBUG)
 335     msg_Dbg( p_osd, "select" );
 336 #endif
 337     p_button = p_osd->p_state->p_visible;
 338     /*
 339      * Is there a menu item above or below? If so, then select it.
 340      */
 341     if( p_button && p_button->p_up )
 342     {
 343         vlc_mutex_unlock( &osd_mutex );
 344         osd_MenuUp( p_this );   /* "menu select" means go to menu item above. */
 345         return;
 346     }
 347     if( p_button && p_button->p_down )
 348     {
 349         vlc_mutex_unlock( &osd_mutex );
 350         osd_MenuDown( p_this ); /* "menu select" means go to menu item below. */
 351         return;
 352     }
 353
 354     if( p_button && !p_button->b_range )
 355     {
 356         p_button->p_current_state = osd_StateChange( p_button, OSD_BUTTON_PRESSED );
 357         osd_UpdateState( p_osd->p_state,
 358                 p_button->i_x, p_button->i_y,
 359                 p_osd->p_state->p_visible->p_current_state->i_width,
 360                 p_osd->p_state->p_visible->p_current_state->i_height,
 361                 p_button->p_current_state->p_pic );
 362         osd_SetMenuUpdate( p_osd, true );
 363         osd_SetMenuVisible( p_osd, true );
 364         osd_SetKeyPressed( VLC_OBJECT(p_osd->p_libvlc),
 365                            var_InheritInteger( p_osd, p_button->psz_action ) );
 366 #if defined(OSD_MENU_DEBUG)
 367         msg_Dbg( p_osd, "select (%d, %s)",
 368                  (int)var_InheritInteger( p_osd, p_button->psz_action ),
 369                  p_button->psz_action );
 370 #endif
 371     }
 372     vlc_mutex_unlock( &osd_mutex );
 373 }
 374
 375 #undef osd_MenuNext
 376 void osd_MenuNext( vlc_object_t *p_this )
 377 {
 378     osd_button_t *p_button = NULL;
 379
 380     osd_menu_t *p_osd = osd_FindVisible( p_this );
 381     if( p_osd == NULL )
 382         return;
 383
 384     p_button = p_osd->p_state->p_visible;
 385     if( p_button )
 386     {
 387         if( !p_button->b_range )
 388             p_button->p_current_state = osd_StateChange( p_button, OSD_BUTTON_UNSELECT );
 389         if( p_button->p_next )
 390             p_osd->p_state->p_visible = p_button->p_next;
 391         else
 392             p_osd->p_state->p_visible = p_osd->p_button;
 393
 394         if( !p_osd->p_state->p_visible->b_range )
 395             p_osd->p_state->p_visible->p_current_state =
 396                 osd_StateChange( p_osd->p_state->p_visible, OSD_BUTTON_SELECT );
 397
 398         osd_UpdateState( p_osd->p_state,
 399                 p_osd->p_state->p_visible->i_x, p_osd->p_state->p_visible->i_y,
 400                 p_osd->p_state->p_visible->p_current_state->i_width,
 401                 p_osd->p_state->p_visible->p_current_state->i_height,
 402                 p_osd->p_state->p_visible->p_current_state->p_pic );
 403         osd_SetMenuUpdate( p_osd, true );
 404     }
 405 #if defined(OSD_MENU_DEBUG)
 406     msg_Dbg( p_osd, "direction right [button %s]", p_osd->p_state->p_visible->psz_action );
 407 #endif
 408
 409     vlc_mutex_unlock( &osd_mutex );
 410 }
 411
 412 #undef osd_MenuPrev
 413 void osd_MenuPrev( vlc_object_t *p_this )
 414 {
 415     osd_button_t *p_button = NULL;
 416
 417     osd_menu_t *p_osd = osd_FindVisible( p_this );
 418     if( p_osd == NULL )
 419         return;
 420
 421     p_button = p_osd->p_state->p_visible;
 422     if( p_button )
 423     {
 424         if( !p_button->b_range )
 425             p_button->p_current_state = osd_StateChange( p_button, OSD_BUTTON_UNSELECT );
 426         if( p_button->p_prev )
 427             p_osd->p_state->p_visible = p_button->p_prev;
 428         else
 429             p_osd->p_state->p_visible = p_osd->p_last_button;
 430
 431         if( !p_osd->p_state->p_visible->b_range )
 432             p_osd->p_state->p_visible->p_current_state =
 433                 osd_StateChange( p_osd->p_state->p_visible, OSD_BUTTON_SELECT );
 434
 435         osd_UpdateState( p_osd->p_state,
 436                 p_osd->p_state->p_visible->i_x, p_osd->p_state->p_visible->i_y,
 437                 p_osd->p_state->p_visible->p_current_state->i_width,
 438                 p_osd->p_state->p_visible->p_current_state->i_height,
 439                 p_osd->p_state->p_visible->p_current_state->p_pic );
 440         osd_SetMenuUpdate( p_osd, true );
 441     }
 442 #if defined(OSD_MENU_DEBUG)
 443     msg_Dbg( p_osd, "direction left [button %s]", p_osd->p_state->p_visible->psz_action );
 444 #endif
 445
 446     vlc_mutex_unlock( &osd_mutex );
 447 }
 448
 449 #undef osd_MenuUp
 450 void osd_MenuUp( vlc_object_t *p_this )
 451 {
 452     osd_button_t *p_button = NULL;
 453 #if defined(OSD_MENU_DEBUG)
 454     vlc_value_t val;
 455 #endif
 456
 457     osd_menu_t *p_osd = osd_FindVisible( p_this );
 458     if( p_osd == NULL )
 459         return;
 460
 461     p_button = p_osd->p_state->p_visible;
 462     if( p_button )
 463     {
 464         if( !p_button->b_range )
 465         {
 466             p_button->p_current_state = osd_StateChange( p_button, OSD_BUTTON_SELECT );
 467             if( p_button->p_up )
 468                 p_osd->p_state->p_visible = p_button->p_up;
 469         }
 470
 471         if( p_button->b_range && p_osd->p_state->p_visible->b_range )
 472         {
 473             osd_state_t *p_temp = p_osd->p_state->p_visible->p_current_state;
 474             if( p_temp && p_temp->p_next )
 475                 p_osd->p_state->p_visible->p_current_state = p_temp->p_next;
 476         }
 477         else if( !p_osd->p_state->p_visible->b_range )
 478         {
 479             p_osd->p_state->p_visible->p_current_state =
 480                 osd_StateChange( p_osd->p_state->p_visible, OSD_BUTTON_SELECT );
 481         }
 482
 483         osd_UpdateState( p_osd->p_state,
 484                 p_osd->p_state->p_visible->i_x, p_osd->p_state->p_visible->i_y,
 485                 p_osd->p_state->p_visible->p_current_state->i_width,
 486                 p_osd->p_state->p_visible->p_current_state->i_height,
 487                 p_osd->p_state->p_visible->p_current_state->p_pic );
 488         osd_SetMenuUpdate( p_osd, true );
 489         /* If this is a range style action with associated images of only one state,
 490             * then perform "menu select" on every menu navigation
 491             */
 492         if( p_button->b_range )
 493         {
 494             osd_SetKeyPressed( VLC_OBJECT(p_osd->p_libvlc),
 495                                var_InheritInteger(p_osd, p_button->psz_action) );
 496 #if defined(OSD_MENU_DEBUG)
 497             msg_Dbg( p_osd, "select (%"PRId64", %s)", val.i_int, p_button->psz_action );
 498 #endif
 499         }
 500     }
 501 #if defined(OSD_MENU_DEBUG)
 502     msg_Dbg( p_osd, "direction up [button %s]", p_osd->p_state->p_visible->psz_action );
 503 #endif
 504
 505     vlc_mutex_unlock( &osd_mutex );
 506 }
 507
 508 #undef osd_MenuDown
 509 void osd_MenuDown( vlc_object_t *p_this )
 510 {
 511     osd_button_t *p_button = NULL;
 512 #if defined(OSD_MENU_DEBUG)
 513     vlc_value_t val;
 514 #endif
 515
 516     osd_menu_t *p_osd = osd_FindVisible( p_this );
 517     if( p_osd == NULL )
 518         return;
 519
 520     p_button = p_osd->p_state->p_visible;
 521     if( p_button )
 522     {
 523         if( !p_button->b_range )
 524         {
 525             p_button->p_current_state = osd_StateChange( p_button, OSD_BUTTON_SELECT );
 526             if( p_button->p_down )
 527                 p_osd->p_state->p_visible = p_button->p_down;
 528         }
 529
 530         if( p_button->b_range && p_osd->p_state->p_visible->b_range )
 531         {
 532             osd_state_t *p_temp = p_osd->p_state->p_visible->p_current_state;
 533             if( p_temp && p_temp->p_prev )
 534                 p_osd->p_state->p_visible->p_current_state = p_temp->p_prev;
 535         }
 536         else if( !p_osd->p_state->p_visible->b_range )
 537         {
 538             p_osd->p_state->p_visible->p_current_state =
 539                 osd_StateChange( p_osd->p_state->p_visible, OSD_BUTTON_SELECT );
 540         }
 541
 542         osd_UpdateState( p_osd->p_state,
 543                 p_osd->p_state->p_visible->i_x, p_osd->p_state->p_visible->i_y,
 544                 p_osd->p_state->p_visible->p_current_state->i_width,
 545                 p_osd->p_state->p_visible->p_current_state->i_height,
 546                 p_osd->p_state->p_visible->p_current_state->p_pic );
 547         osd_SetMenuUpdate( p_osd, true );
 548         /* If this is a range style action with associated images of only one state,
 549          * then perform "menu select" on every menu navigation
 550          */
 551         if( p_button->b_range )
 552         {
 553             osd_SetKeyPressed( VLC_OBJECT(p_osd->p_libvlc),
 554                                var_InheritInteger(p_osd, p_button->psz_action_down) );
 555 #if defined(OSD_MENU_DEBUG)
 556             msg_Dbg( p_osd, "select (%"PRId64", %s)", val.i_int, p_button->psz_action_down );
 557 #endif
 558         }
 559     }
 560 #if defined(OSD_MENU_DEBUG)
 561     msg_Dbg( p_osd, "direction down [button %s]", p_osd->p_state->p_visible->psz_action );
 562 #endif
 563
 564     vlc_mutex_unlock( &osd_mutex );
 565 }
 566
 567 static int osd_VolumeStep( vlc_object_t *p_this, int i_volume, int i_steps )
 568 {
 569     int i_volume_step = 0;
 570     (void)i_steps;
 571
 572     i_volume_step = config_GetInt( p_this->p_libvlc, "volume-step" );
 573     return (i_volume/i_volume_step);
 574 }
 575
 576 #undef osd_Volume
 577 /**
 578  * Display current audio volume bitmap
 579  *
 580  * The OSD Menu audio volume bar is updated to reflect the new audio volume. Call this function
 581  * when the audio volume is updated outside the OSD menu command "menu up", "menu down" or "menu select".
 582  */
 583 void osd_Volume( vlc_object_t *p_this )
 584 {
 585     osd_button_t *p_button = NULL;
 586     int i_volume = 0;
 587     int i_steps = 0;
 588
 589     osd_menu_t *p_osd = osd_FindVisible( p_this );
 590     if( p_osd == NULL )
 591         return;
 592
 593     if( p_osd->p_state && p_osd->p_state->p_volume )
 594     {
 595
 596         p_button = p_osd->p_state->p_volume;
 597         if( p_osd->p_state->p_volume )
 598             p_osd->p_state->p_visible = p_osd->p_state->p_volume;
 599         if( p_button && p_button->b_range )
 600         {
 601             /* Update the volume state images to match the current volume */
 602             i_volume = config_GetInt( p_this, "volume" );
 603             i_steps = osd_VolumeStep( p_this, i_volume, p_button->i_ranges );
 604             p_button->p_current_state = osd_VolumeStateChange( p_button->p_states, i_steps );
 605
 606             osd_UpdateState( p_osd->p_state,
 607                     p_button->i_x, p_button->i_y,
 608                     p_button->p_current_state->i_width,
 609                     p_button->p_current_state->i_height,
 610                     p_button->p_current_state->p_pic );
 611             osd_SetMenuUpdate( p_osd, true );
 612             osd_SetMenuVisible( p_osd, true );
 613         }
 614     }
 615     vlc_mutex_unlock( &osd_mutex );
 616 }
 617
 618 #undef osd_ButtonFind
 619 osd_button_t *osd_ButtonFind( vlc_object_t *p_this, int i_x, int i_y,
 620     int i_window_height, int i_window_width,
 621     int i_scale_width, int i_scale_height )
 622 {
 623     osd_button_t *p_button;
 624
 625     osd_menu_t *p_osd = osd_FindVisible( p_this );
 626     if( p_osd == NULL )
 627         return NULL;
 628
 629     p_button = p_osd->p_button;
 630     for( ; p_button != NULL; p_button = p_button->p_next )
 631     {
 632         int i_source_video_width  = ( i_window_width  * 1000 ) / i_scale_width;
 633         int i_source_video_height = ( i_window_height * 1000 ) / i_scale_height;
 634         int i_y_offset = p_button->i_y;
 635         int i_x_offset = p_button->i_x;
 636         int i_width = p_button->i_width;
 637         int i_height = p_button->i_height;
 638
 639         if( p_osd->i_position > 0 )
 640         {
 641             int i_inv_scale_y = i_source_video_height;
 642             int i_inv_scale_x = i_source_video_width;
 643             int pi_x = 0;
 644
 645             if( p_osd->i_position & SUBPICTURE_ALIGN_BOTTOM )
 646             {
 647                 i_y_offset = i_window_height - p_button->i_height -
 648                     (p_osd->i_y + p_button->i_y) * i_inv_scale_y / 1000;
 649             }
 650             else if ( !(p_osd->i_position & SUBPICTURE_ALIGN_TOP) )
 651             {
 652                 i_y_offset = i_window_height / 2 - p_button->i_height / 2;
 653             }
 654
 655             if( p_osd->i_position & SUBPICTURE_ALIGN_RIGHT )
 656             {
 657                 i_x_offset = i_window_width - p_button->i_width -
 658                     (pi_x + p_button->i_x)
 659                     * i_inv_scale_x / 1000;
 660             }
 661             else if ( !(p_osd->i_position & SUBPICTURE_ALIGN_LEFT) )
 662             {
 663                 i_x_offset = i_window_width / 2 - p_button->i_width / 2;
 664             }
 665
 666             i_width = i_window_width - p_button->i_width - i_inv_scale_x / 1000;
 667             i_height = i_window_height - p_button->i_height - i_inv_scale_y / 1000;
 668         }
 669
 670         // TODO: write for Up / Down case too.
 671         // TODO: handle absolute positioning case
 672         if( ( i_x >= i_x_offset ) && ( i_x <= i_x_offset + i_width ) &&
 673             ( i_y >= i_y_offset ) && ( i_y <= i_y_offset + i_height ) )
 674         {
 675             vlc_mutex_unlock( &osd_mutex );
 676             return p_button;
 677         }
 678     }
 679
 680     vlc_mutex_unlock( &osd_mutex );
 681     return NULL;
 682 }
 683
 684 #undef osd_ButtonSelect
 685 /**
 686  * Select the button provided as the new active button
 687  */
 688 void osd_ButtonSelect( vlc_object_t *p_this, osd_button_t *p_button )
 689 {
 690     osd_button_t *p_old;
 691
 692     osd_menu_t *p_osd = osd_FindVisible( p_this );
 693     if( p_osd == NULL )
 694         return;
 695
 696     p_old = p_osd->p_state->p_visible;
 697     if( p_old )
 698     {
 699         if( !p_old->b_range )
 700             p_old->p_current_state = osd_StateChange( p_old, OSD_BUTTON_UNSELECT );
 701         p_osd->p_state->p_visible = p_button;
 702
 703         if( !p_osd->p_state->p_visible->b_range )
 704             p_osd->p_state->p_visible->p_current_state =
 705                 osd_StateChange( p_osd->p_state->p_visible, OSD_BUTTON_SELECT );
 706
 707         osd_UpdateState( p_osd->p_state,
 708                 p_osd->p_state->p_visible->i_x, p_osd->p_state->p_visible->i_y,
 709                 p_osd->p_state->p_visible->p_current_state->i_width,
 710                 p_osd->p_state->p_visible->p_current_state->i_height,
 711                 p_osd->p_state->p_visible->p_current_state->p_pic );
 712         osd_SetMenuUpdate( p_osd, true );
 713     }
 714 #if defined(OSD_MENU_DEBUG)
 715     msg_Dbg( p_osd, "button selected is [button %s]", p_osd->p_state->p_visible->psz_action );
 716 #endif
 717
 718     vlc_mutex_unlock( &osd_mutex );
 719 }