include/vlc_osd.h

   1 /*****************************************************************************
   2  * vlc_osd.h - OSD menu and subpictures definitions and function prototypes
   3  *****************************************************************************
   4  * Copyright (C) 1999-2006 the VideoLAN team
   5  * Copyright (C) 2004-2005 M2X
   6  * $Id$
   7  *
   8  * Authors: Jean-Paul Saman <jpsaman #_at_# m2x dot nl>
   9  *          Gildas Bazin <gbazin@videolan.org>
  10  *
  11  * Added code from include/osd.h written by:
  12  * Copyright (C) 2003-2005 the VideoLAN team
  13  * Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
  14  *
  15  * This program is free software; you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License as published by
  17  * the Free Software Foundation; either version 2 of the License, or
  18  * (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  28  *****************************************************************************/
  29
  30 #ifndef VLC_OSD_H
  31 #define VLC_OSD_H 1
  32
  33 #include "vlc_vout.h"
  34
  35 # ifdef __cplusplus
  36 extern "C" {
  37 # endif
  38
  39 /**
  40  * \file
  41  * This file defines SPU subpicture and OSD functions and object types.
  42  */
  43
  44 /**********************************************************************
  45  * Base SPU structures
  46  **********************************************************************/
  47 /**
  48  * \defgroup spu Subpicture Unit
  49  * This module describes the programming interface for the subpicture unit.
  50  * It includes functions allowing to create/destroy an spu, create/destroy
  51  * subpictures and render them.
  52  * @{
  53  */
  54
  55 #include <vlc_vout.h>
  56
  57 typedef struct spu_private_t spu_private_t;
  58
  59 /* Default subpicture channel ID */
  60 #define DEFAULT_CHAN           1
  61
  62 /**
  63  * Subpicture unit descriptor
  64  */
  65 struct spu_t
  66 {
  67     VLC_COMMON_MEMBERS
  68
  69     int (*pf_control)( spu_t *, int, va_list );
  70
  71     spu_private_t *p;
  72 };
  73
  74 enum spu_query_e
  75 {
  76     SPU_CHANNEL_REGISTER,         /* arg1= int *   res=    */
  77     SPU_CHANNEL_CLEAR             /* arg1= int     res=    */
  78 };
  79
  80 static inline int spu_vaControl( spu_t *p_spu, int i_query, va_list args )
  81 {
  82     if( p_spu->pf_control )
  83         return p_spu->pf_control( p_spu, i_query, args );
  84     else
  85         return VLC_EGENERIC;
  86 }
  87
  88 static inline int spu_Control( spu_t *p_spu, int i_query, ... )
  89 {
  90     va_list args;
  91     int i_result;
  92
  93     va_start( args, i_query );
  94     i_result = spu_vaControl( p_spu, i_query, args );
  95     va_end( args );
  96     return i_result;
  97 }
  98
  99 VLC_EXPORT( spu_t *, spu_Create, ( vlc_object_t * ) );
 100 #define spu_Create(a) spu_Create(VLC_OBJECT(a))
 101 VLC_EXPORT( int, spu_Init, ( spu_t * ) );
 102 VLC_EXPORT( void, spu_Destroy, ( spu_t * ) );
 103 void spu_Attach( spu_t *, vlc_object_t *, bool );
 104
 105 /**
 106  * This function sends a subpicture to the spu_t core.
 107  *
 108  * You cannot use the provided subpicture anymore. The spu_t core
 109  * will destroy it at its convenience.
 110  */
 111 VLC_EXPORT( void, spu_DisplaySubpicture, ( spu_t *, subpicture_t * ) );
 112
 113 /**
 114  * This function asks the spu_t core a list of subpictures to display.
 115  *
 116  * The returned list can only be used by spu_RenderSubpictures.
 117  */
 118 VLC_EXPORT( subpicture_t *, spu_SortSubpictures, ( spu_t *, mtime_t render_subtitle_date, bool b_subtitle_only ) );
 119
 120 /**
 121  * This function renders a list of subpicture_t on the provided picture.
 122  *
 123  * \param p_fmt_dst is the format of the destination picture.
 124  * \param p_fmt_src is the format of the original(source) video.
 125  */
 126 VLC_EXPORT( void, spu_RenderSubpictures, ( spu_t *,  picture_t *, const video_format_t *p_fmt_dst, subpicture_t *p_list, const video_format_t *p_fmt_src, mtime_t render_subtitle_date ) );
 127
 128 /** @}*/
 129
 130 /**********************************************************************
 131  * OSD Menu
 132  **********************************************************************/
 133 /**
 134  * \defgroup osdmenu OSD Menu
 135  * The OSD menu core creates the OSD menu structure in memory. It parses a
 136  * configuration file that defines all elements that are part of the menu. The
 137  * core also handles all actions and menu structure updates on behalf of video
 138  * subpicture filters.
 139  *
 140  * The file modules/video_filters/osdmenu.c implements a subpicture filter that
 141  * specifies the final information on positioning of the current state image.
 142  * A subpicture filter is called each time a video picture has to be rendered,
 143  * it also gives a start and end date to the subpicture. The subpicture can be
 144  * streamed if used inside a transcoding command. For example:
 145  *
 146  *  vlc dvdsimple:///dev/dvd --extraintf rc
 147  *  --sout='#transcode{osd}:std{access=udp,mux=ts,dst=dest_ipaddr}'
 148  *  --osdmenu-file=share/osdmenu/dvd.cfg
 149  *
 150  * An example for local usage of the OSD menu is:
 151  *
 152  *  vlc dvdsimple:///dev/dvd --extraintf rc
 153  *  --sub-filter osdmenu
 154  *  --osdmenu-file=share/osdmenu/dvd.cfg
 155  *
 156  * Each OSD menu element, called "action", defines a hotkey action. Each action
 157  * can have several states (unselect, select, pressed). Each state has an image
 158  * that represents the state visually. The commands "menu right", "menu left",
 159  * "menu up" and "menu down" are used to navigate through the OSD menu structure.
 160  * The commands "menu on" or "menu show" and "menu off" or "menu hide" respectively
 161  * show and hide the OSD menu subpictures.
 162  *
 163  * There is one special element called "range". A range is an arbritary range
 164  * of state images that can be browsed using "menu up" and "menu down" commands
 165  * on the rc interface.
 166  *
 167  * The OSD menu configuration file uses a very simple syntax and basic parser.
 168  * A configuration file has the ".cfg".
 169  * An example is "share/osdmenu/dvd256.cfg".
 170  * @{
 171  */
 172
 173 /**
 174  * \brief The OSD Menu configuration file format.
 175  *
 176  * The configuration file syntax is very basic and so is its parser. See the
 177  * BNF formal representation below:
 178  *
 179  * The keywords FILENAME and PATHNAME represent the filename and pathname
 180  * specification that is valid for the Operating System VLC is compiled for.
 181  *
 182  * The hotkey actions that are supported by VLC are documented in the file
 183  * src/libvlc. The file include/vlc_keys.h defines some hotkey internals.
 184  *
 185  * CONFIG_FILE = FILENAME '.cfg'
 186  * WS = [ ' ' | '\t' ]+
 187  * OSDMENU_PATH = PATHNAME
 188  * DIR = 'dir' WS OSDMENU_PATH '\n'
 189  * STYLE = 'style' [ 'default' | 'concat' ] '\n'
 190  * STATE = [ 'unselect' | 'select' | 'pressed' ]
 191  * HOTKEY_ACTION = 'key-' [ 'a' .. 'z', 'A' .. 'Z', '-' ]+
 192  *
 193  * ACTION_TYPE        = 'type' 'volume' '\n'
 194  * ACTION_BLOCK_START = 'action' WS HOTKEY_ACTION WS '('POS','POS')' '\n'
 195  * ACTION_BLOCK_END   = 'end' '\n'
 196  * ACTION_STATE       = STATE WS FILENAME '\n'
 197  * ACTION_RANGE_START = 'range' WS HOTKEY_ACTION WS DEFAULT_INDEX '\n'
 198  * ACTION_RANGE_END   = 'end' '\n'
 199  * ACTION_RANGE_STATE = FILENAME '\n'
 200  *
 201  * ACTION_BLOCK_RANGE = ACTION_RANGE_START [WS ACTION_RANGE_STATE]+ WS ACTION_RANGE_END
 202  * ACTION_BLOCK = ACTION_BLOCK_START [WS ACTION_TYPE*] [ [WS ACTION_STATE]+3 | [WS ACTION_BLOCK_RANGE]+1 ] ACTION_BLOCK_END
 203  * CONFIG_FILE_CONTENTS = DIR [ACTION_BLOCK]+
 204  *
 205  */
 206
 207 /**
 208  * OSD menu position and picture type defines
 209  */
 210
 211 #define OSD_ALIGN_LEFT 0x1
 212 #define OSD_ALIGN_RIGHT 0x2
 213 #define OSD_ALIGN_TOP 0x4
 214 #define OSD_ALIGN_BOTTOM 0x8
 215
 216 #define OSD_HOR_SLIDER 1
 217 #define OSD_VERT_SLIDER 2
 218
 219 #define OSD_PLAY_ICON 1
 220 #define OSD_PAUSE_ICON 2
 221 #define OSD_SPEAKER_ICON 3
 222 #define OSD_MUTE_ICON 4
 223
 224 /**
 225  * Text style
 226  *
 227  * A text style is used to specify the formatting of text.
 228  * A font renderer can use the supplied information to render the
 229  * text specified.
 230  */
 231 struct text_style_t
 232 {
 233     char *     psz_fontname;      /**< The name of the font */
 234     int        i_font_size;       /**< The font size in pixels */
 235     int        i_font_color;      /**< The color of the text 0xRRGGBB
 236                                        (native endianness) */
 237     int        i_font_alpha;      /**< The transparency of the text.
 238                                        0x00 is fully opaque,
 239                                        0xFF fully transparent */
 240     int        i_style_flags;     /**< Formatting style flags */
 241     int        i_outline_color;   /**< The color of the outline 0xRRGGBB */
 242     int        i_outline_alpha;   /**< The transparency of the outline.
 243                                        0x00 is fully opaque,
 244                                        0xFF fully transparent */
 245     int        i_shadow_color;    /**< The color of the shadow 0xRRGGBB */
 246     int        i_shadow_alpha;    /**< The transparency of the shadow.
 247                                         0x00 is fully opaque,
 248                                         0xFF fully transparent */
 249     int        i_background_color;/**< The color of the background 0xRRGGBB */
 250     int        i_background_alpha;/**< The transparency of the background.
 251                                        0x00 is fully opaque,
 252                                        0xFF fully transparent */
 253     int        i_karaoke_background_color;/**< Background color for karaoke 0xRRGGBB */
 254     int        i_karaoke_background_alpha;/**< The transparency of the karaoke bg.
 255                                        0x00 is fully opaque,
 256                                        0xFF fully transparent */
 257     int        i_outline_width;   /**< The width of the outline in pixels */
 258     int        i_shadow_width;    /**< The width of the shadow in pixels */
 259     int        i_spacing;         /**< The spaceing between glyphs in pixels */
 260 };
 261
 262 /* Style flags for \ref text_style_t */
 263 #define STYLE_BOLD        1
 264 #define STYLE_ITALIC      2
 265 #define STYLE_OUTLINE     4
 266 #define STYLE_SHADOW      8
 267 #define STYLE_BACKGROUND  16
 268 #define STYLE_UNDERLINE   32
 269 #define STYLE_STRIKEOUT   64
 270
 271 /**
 272  * Create a default text style
 273  */
 274 VLC_EXPORT( text_style_t *, text_style_New, ( void ) );
 275
 276 /**
 277  * Copy a text style into another
 278  */
 279 VLC_EXPORT( text_style_t *, text_style_Copy, ( text_style_t *, const text_style_t * ) );
 280
 281 /**
 282  * Duplicate a text style
 283  */
 284 VLC_EXPORT( text_style_t *, text_style_Duplicate, ( const text_style_t * ) );
 285
 286 /**
 287  * Delete a text style created by text_style_New or text_style_Duplicate
 288  */
 289 VLC_EXPORT( void, text_style_Delete, ( text_style_t * ) );
 290
 291 /**
 292  * OSD menu button states
 293  *
 294  * Every button has three states, either it is unselected, selected or pressed.
 295  * An OSD menu skin can associate images with each state.
 296  *
 297  *  OSD_BUTTON_UNSELECT 0
 298  *  OSD_BUTTON_SELECT   1
 299  *  OSD_BUTTON_PRESSED  2
 300  */
 301 #define OSD_BUTTON_UNSELECT 0
 302 #define OSD_BUTTON_SELECT   1
 303 #define OSD_BUTTON_PRESSED  2
 304
 305 /**
 306  * OSD State object
 307  *
 308  * The OSD state object holds the state and associated images for a
 309  * particular state on the screen. The picture is displayed when this
 310  * state is the active state.
 311  */
 312 struct osd_state_t
 313 {
 314     osd_state_t *p_next;    /*< pointer to next state */
 315     osd_state_t *p_prev;    /*< pointer to previous state */
 316     picture_t   *p_pic;     /*< picture of state */
 317
 318     char        *psz_state; /*< state name */
 319     int          i_state;   /*< state index */
 320
 321     int     i_x;            /*< x-position of button state image */
 322     int     i_y;            /*< y-position of button state image */
 323     int     i_width;        /*< width of button state image */
 324     int     i_height;       /*< height of button state image */
 325 };
 326
 327 /**
 328  * OSD Button object
 329  *
 330  * An OSD Button has different states. Each state has an image for display.
 331  */
 332 struct osd_button_t
 333 {
 334     osd_button_t *p_next;   /*< pointer to next button */
 335     osd_button_t *p_prev;   /*< pointer to previous button */
 336     osd_button_t *p_up;     /*< pointer to up button */
 337     osd_button_t *p_down;   /*< pointer to down button */
 338
 339     osd_state_t *p_current_state; /*< pointer to current state image */
 340     osd_state_t *p_states; /*< doubly linked list of states */
 341     picture_t   *p_feedback; /*< feedback picture */
 342
 343     char    *psz_name;     /*< name of button */
 344
 345     /* These member should probably be a struct hotkey */
 346     char    *psz_action;      /*< hotkey action name on button*/
 347     char    *psz_action_down; /*< hotkey action name on range buttons
 348                                   for command "menu down" */
 349     /* end of hotkey specifics */
 350
 351     int     i_x;            /*< x-position of button visible state image */
 352     int     i_y;            /*< y-position of button visible state image */
 353     int     i_width;        /*< width of button visible state image */
 354     int     i_height;       /*< height of button visible state image */
 355
 356     /* range style button */
 357     bool   b_range;    /*< button should be interpreted as range */
 358     int          i_ranges;   /*< number of states */
 359 };
 360
 361 /**
 362  * OSD Menu Style
 363  *
 364  * The images that make up an OSD menu can be created in such away that
 365  * they contain all buttons in the same picture, with the selected one
 366  * highlighted or being a concatenation of all the seperate images. The
 367  * first case is the default.
 368  *
 369  * To change the default style the keyword 'style' should be set to 'concat'.
 370  */
 371
 372 #define OSD_MENU_STYLE_SIMPLE 0x0
 373 #define OSD_MENU_STYLE_CONCAT 0x1
 374
 375 /**
 376  * OSD Menu State object
 377  *
 378  * Represents the current state as displayed.
 379  */
 380 /* Represent the menu state */
 381 struct osd_menu_state_t
 382 {
 383     int     i_x;        /*< x position of spu region */
 384     int     i_y;        /*< y position of spu region */
 385     int     i_width;    /*< width of spu region */
 386     int     i_height;   /*< height of spu region */
 387
 388     picture_t    *p_pic;  /*< pointer to picture to display */
 389     osd_button_t *p_visible; /*< shortcut to visible button */
 390
 391     bool b_menu_visible; /*< menu currently visible? */
 392     bool b_update;       /*< update OSD Menu when true */
 393
 394     /* quick hack to volume state. */
 395     osd_button_t *p_volume; /*< pointer to volume range object. */
 396 };
 397
 398 /**
 399  * OSD Menu object
 400  *
 401  * The main OSD Menu object, which holds a linked list to all buttons
 402  * and images that defines the menu. The p_state variable represents the
 403  * current state of the OSD Menu.
 404  */
 405 struct osd_menu_t
 406 {
 407     VLC_COMMON_MEMBERS
 408
 409     int     i_x;        /*< x-position of OSD Menu on the video screen */
 410     int     i_y;        /*< y-position of OSD Menu on the video screen */
 411     int     i_width;    /*< width of OSD Menu on the video screen */
 412     int     i_height;   /*< height of OSD Menu on the video screen */
 413     int     i_style;    /*< style of spu region generation */
 414     int     i_position; /*< display position */
 415
 416     char             *psz_path;  /*< directory where OSD menu images are stored */
 417     osd_button_t     *p_button;  /*< doubly linked list of buttons */
 418     osd_menu_state_t *p_state;   /*< current state of OSD menu */
 419
 420     /* quick link in the linked list. */
 421     osd_button_t  *p_last_button; /*< pointer to last button in the list */
 422
 423     /* misc parser */
 424     module_t        *p_parser;  /*< pointer to parser module */
 425     char            *psz_file;  /*< Config file name */
 426     image_handler_t *p_image;   /*< handler to image loading and conversion libraries */
 427 };
 428
 429 /**
 430  * Initialize an osd_menu_t object
 431  *
 432  * This functions has to be called before any call to other osd_menu_t*
 433  * functions. It creates the osd_menu object and holds a pointer to it
 434  * during its lifetime.
 435  */
 436 VLC_EXPORT( osd_menu_t *, osd_MenuCreate, ( vlc_object_t *, const char * ) );
 437
 438 /**
 439  * Delete the osd_menu_t object
 440  *
 441  * This functions has to be called to release the associated module and
 442  * memory for the osdmenu. After return of this function the pointer to
 443  * osd_menu_t* is invalid.
 444  */
 445 VLC_EXPORT( void, osd_MenuDelete, ( vlc_object_t *, osd_menu_t * ) );
 446
 447 #define osd_MenuCreate(object,file) osd_MenuCreate( VLC_OBJECT(object), file )
 448 #define osd_MenuDelete(object,osd)  osd_MenuDelete( VLC_OBJECT(object), osd )
 449
 450 /**
 451  * Find OSD Menu button at position x,y
 452  */
 453 VLC_EXPORT( osd_button_t *, osd_ButtonFind, ( vlc_object_t *p_this,
 454      int, int, int, int, int, int ) );
 455
 456 #define osd_ButtonFind(object,x,y,h,w,sh,sw)  osd_ButtonFind(object,x,y,h,w,sh,sw)
 457
 458 /**
 459  * Select the button provided as the new active button
 460  */
 461 VLC_EXPORT( void, osd_ButtonSelect, ( vlc_object_t *, osd_button_t *) );
 462
 463 #define osd_ButtonSelect(object,button) osd_ButtonSelect(object,button)
 464
 465 /**
 466  * Show the OSD menu.
 467  *
 468  * Show the OSD menu on the video output or mux it into the stream.
 469  * Every change to the OSD menu will now be visible in the output. An output
 470  * can be a video output window or a stream (\see stream output)
 471  */
 472 VLC_EXPORT( void, osd_MenuShow, ( vlc_object_t * ) );
 473
 474 /**
 475  * Hide the OSD menu.
 476  *
 477  * Stop showing the OSD menu on the video output or mux it into the stream.
 478  */
 479 VLC_EXPORT( void, osd_MenuHide, ( vlc_object_t * ) );
 480
 481 /**
 482  * Activate the action of this OSD menu item.
 483  *
 484  * The rc interface command "menu select" triggers the sending of an
 485  * hotkey action to the hotkey interface. The hotkey that belongs to
 486  * the current highlighted OSD menu item will be used.
 487  */
 488 VLC_EXPORT( void, osd_MenuActivate,   ( vlc_object_t * ) );
 489
 490 #define osd_MenuShow(object) osd_MenuShow( VLC_OBJECT(object) )
 491 #define osd_MenuHide(object) osd_MenuHide( VLC_OBJECT(object) )
 492 #define osd_MenuActivate(object)   osd_MenuActivate( VLC_OBJECT(object) )
 493
 494 /**
 495  * Next OSD menu item
 496  *
 497  * Select the next OSD menu item to be highlighted.
 498  * Note: The actual position on screen of the menu item is determined by
 499  * the OSD menu configuration file.
 500  */
 501 VLC_EXPORT( void, osd_MenuNext, ( vlc_object_t * ) );
 502
 503 /**
 504  * Previous OSD menu item
 505  *
 506  * Select the previous OSD menu item to be highlighted.
 507  * Note: The actual position on screen of the menu item is determined by
 508  * the OSD menu configuration file.
 509  */
 510 VLC_EXPORT( void, osd_MenuPrev, ( vlc_object_t * ) );
 511
 512 /**
 513  * OSD menu item above
 514  *
 515  * Select the OSD menu item above the current item to be highlighted.
 516  * Note: The actual position on screen of the menu item is determined by
 517  * the OSD menu configuration file.
 518  */
 519 VLC_EXPORT( void, osd_MenuUp,   ( vlc_object_t * ) );
 520
 521 /**
 522  * OSD menu item below
 523  *
 524  * Select the next OSD menu item below the current item to be highlighted.
 525  * Note: The actual position on screen of the menu item is determined by
 526  * the OSD menu configuration file.
 527  */
 528 VLC_EXPORT( void, osd_MenuDown, ( vlc_object_t * ) );
 529
 530 #define osd_MenuNext(object) osd_MenuNext( VLC_OBJECT(object) )
 531 #define osd_MenuPrev(object) osd_MenuPrev( VLC_OBJECT(object) )
 532 #define osd_MenuUp(object)   osd_MenuUp( VLC_OBJECT(object) )
 533 #define osd_MenuDown(object) osd_MenuDown( VLC_OBJECT(object) )
 534
 535 /**
 536  * Display the audio volume bitmap.
 537  *
 538  * Display the correct audio volume bitmap that corresponds to the
 539  * current Audio Volume setting.
 540  */
 541 VLC_EXPORT( void, osd_Volume, ( vlc_object_t * ) );
 542
 543 #define osd_Volume(object)     osd_Volume( VLC_OBJECT(object) )
 544
 545 /**
 546  * Retrieve a non modifyable pointer to the OSD Menu state
 547  *
 548  */
 549 static inline const osd_menu_state_t *osd_GetMenuState( osd_menu_t *p_osd )
 550 {
 551     return( p_osd->p_state );
 552 }
 553
 554 /**
 555  * Get the last key press received by the OSD Menu
 556  *
 557  * Returns 0 when no key has been pressed or the value of the key pressed.
 558  */
 559 static inline bool osd_GetKeyPressed( osd_menu_t *p_osd )
 560 {
 561     return( p_osd->p_state->b_update );
 562 }
 563
 564 /**
 565  * Set the key pressed to a value.
 566  *
 567  * Assign a new key value to the last key pressed on the OSD Menu.
 568  */
 569 static inline void osd_SetKeyPressed( vlc_object_t *p_this, int i_value )
 570 {
 571     vlc_value_t val;
 572
 573     val.i_int = i_value;
 574     var_Set( p_this, "key-pressed", val );
 575 }
 576
 577 /**
 578  * Update the OSD Menu visibility flag.
 579  *
 580  * true means OSD Menu should be shown. false means OSD Menu
 581  * should not be shown.
 582  */
 583 static inline void osd_SetMenuVisible( osd_menu_t *p_osd, bool b_value )
 584 {
 585     vlc_value_t val;
 586
 587     val.b_bool = p_osd->p_state->b_menu_visible = b_value;
 588     var_Set( p_osd, "osd-menu-visible", val );
 589 }
 590
 591 /**
 592  * Update the OSD Menu update flag
 593  *
 594  * If the OSD Menu should be updated then set the update flag to
 595  * true, else to false.
 596  */
 597 static inline void osd_SetMenuUpdate( osd_menu_t *p_osd, bool b_value )
 598 {
 599     vlc_value_t val;
 600
 601     val.b_bool = p_osd->p_state->b_update = b_value;
 602     var_Set( p_osd, "osd-menu-update", val );
 603 }
 604
 605 /**
 606  * Textual feedback
 607  *
 608  * Functions that provide the textual feedback on the OSD. They are shown
 609  * on hotkey commands. The feedback is also part of the osd_button_t
 610  * object. The types are declared in the include file include/vlc_osd.h
 611  * @see vlc_osd.h
 612  */
 613 VLC_EXPORT( int, osd_ShowTextRelative, ( spu_t *, int, const char *, const text_style_t *, int, int, int, mtime_t ) );
 614 VLC_EXPORT( int, osd_ShowTextAbsolute, ( spu_t *, int, const char *, const text_style_t *, int, int, int, mtime_t, mtime_t ) );
 615 VLC_EXPORT( void, osd_Message, ( spu_t *, int, char *, ... ) LIBVLC_FORMAT( 3, 4 ) );
 616
 617 /**
 618  * Default feedback images
 619  *
 620  * Functions that provide the default OSD feedback images on hotkey
 621  * commands. These feedback images are also part of the osd_button_t
 622  * object. The types are declared in the include file include/vlc_osd.h
 623  * @see vlc_osd.h
 624  */
 625 VLC_EXPORT( int, osd_Slider, ( vlc_object_t *, spu_t *, int, int, int, int, int, int, short ) );
 626 VLC_EXPORT( int, osd_Icon, ( vlc_object_t *, spu_t *, int, int, int, int, int, short ) );
 627
 628 /** @} */
 629
 630 /**********************************************************************
 631  * Vout text and widget overlays
 632  **********************************************************************/
 633
 634 VLC_EXPORT( int, vout_ShowTextRelative, ( vout_thread_t *, int, char *, const text_style_t *, int, int, int, mtime_t ) );
 635
 636 VLC_EXPORT( int, vout_ShowTextAbsolute, ( vout_thread_t *, int, const char *, const text_style_t *, int, int, int, mtime_t, mtime_t ) );
 637
 638 VLC_EXPORT( int, vout_OSDEpg, ( vout_thread_t *, input_item_t * ) );
 639
 640 /**
 641  * Write an informative message at the default location,
 642  * for the default duration and only if the OSD option is enabled.
 643  * \param p_caller The object that called the function.
 644  * \param i_channel Subpicture channel
 645  * \param psz_format printf style formatting
 646  **/
 647 VLC_EXPORT( void,  vout_OSDMessage, ( vlc_object_t *, int, const char *, ... ) LIBVLC_FORMAT( 3, 4 ) );
 648
 649 #define vout_OSDMessage( obj, chan, ...) \
 650         vout_OSDMessage( VLC_OBJECT(obj), chan, __VA_ARGS__ )
 651
 652 /**
 653  * Display a slider on the video output.
 654  * \param p_this    The object that called the function.
 655  * \param i_channel Subpicture channel
 656  * \param i_postion Current position in the slider
 657  * \param i_type    Types are: OSD_HOR_SLIDER and OSD_VERT_SLIDER.
 658  * @see vlc_osd.h
 659  */
 660 VLC_EXPORT( void, vout_OSDSlider, ( vlc_object_t *, int, int , short ) );
 661
 662 /**
 663  * Display an Icon on the video output.
 664  * \param p_this    The object that called the function.
 665  * \param i_channel Subpicture channel
 666  * \param i_type    Types are: OSD_PLAY_ICON, OSD_PAUSE_ICON, OSD_SPEAKER_ICON, OSD_MUTE_ICON
 667  * @see vlc_osd.h
 668  */
 669 VLC_EXPORT( void, vout_OSDIcon, ( vlc_object_t *, int, short ) );
 670
 671 # ifdef __cplusplus
 672 }
 673 # endif
 674
 675 #endif /* _VLC_OSD_H */