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vlc/include/vlc_variables.h
Rémi Denis-Courmont 6f258887aa Replace VLC_EXPORT macro with a simple prefix, VLC_API 
This should help Doxygen parse VLC headers, and generally makes headers
easier to read. LibVLC already uses a similar approach.
2011-05-07 18:43:51 +03:00

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/*****************************************************************************
* variables.h: variables handling
*****************************************************************************
* Copyright (C) 2002-2004 the VideoLAN team
* $Id$
*
* Authors: Samuel Hocevar <sam@zoy.org>
* Gildas Bazin <gbazin@netcourrier.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifndef VLC_VARIABLES_H
#define VLC_VARIABLES_H 1
/**
* \file
* This file defines functions and structures for dynamic variables in vlc
*/
/**
* \defgroup variables Variables
*
* Functions for using the object variables in vlc.
*
* Vlc have a very powerful "object variable" infrastructure useful
* for many things.
*
* @{
*/
/*****************************************************************************
* Variable types - probably very incomplete
*****************************************************************************/
#define VLC_VAR_TYPE 0x00ff
#define VLC_VAR_CLASS 0x00f0
#define VLC_VAR_FLAGS 0xff00
/** \defgroup var_flags Additive flags
* These flags are added to the type field of the variable. Most as a result of
* a var_Change() call, but some may be added at creation time
* @{
*/
#define VLC_VAR_HASCHOICE 0x0100
#define VLC_VAR_HASMIN 0x0200
#define VLC_VAR_HASMAX 0x0400
#define VLC_VAR_HASSTEP 0x0800
#define VLC_VAR_ISCOMMAND 0x2000
/** Creation flag */
/* If the variable is not found on the current module
search all parents and finally module config until found */
#define VLC_VAR_DOINHERIT 0x8000
/**@}*/
/**
* \defgroup var_action Variable actions
* These are the different actions that can be used with var_Change().
* The parameters given are the meaning of the two last parameters of
* var_Change() when this action is being used.
* @{
*/
/**
* Set the minimum value of this variable
* \param p_val The new minimum value
* \param p_val2 Unused
*/
#define VLC_VAR_SETMIN 0x0010
/**
* Set the maximum value of this variable
* \param p_val The new maximum value
* \param p_val2 Unused
*/
#define VLC_VAR_SETMAX 0x0011
#define VLC_VAR_SETSTEP 0x0012
/**
* Set the value of this variable without triggering any callbacks
* \param p_val The new value
* \param p_val2 Unused
*/
#define VLC_VAR_SETVALUE 0x0013
#define VLC_VAR_SETTEXT 0x0014
#define VLC_VAR_GETTEXT 0x0015
#define VLC_VAR_GETMIN 0x0016
#define VLC_VAR_GETMAX 0x0017
#define VLC_VAR_GETSTEP 0x0018
#define VLC_VAR_ADDCHOICE 0x0020
#define VLC_VAR_DELCHOICE 0x0021
#define VLC_VAR_CLEARCHOICES 0x0022
#define VLC_VAR_SETDEFAULT 0x0023
#define VLC_VAR_GETCHOICES 0x0024
#define VLC_VAR_GETLIST 0x0025
#define VLC_VAR_CHOICESCOUNT 0x0026
#define VLC_VAR_SETISCOMMAND 0x0040
/**@}*/
/** \defgroup var_GetAndSet Variable actions
* These are the different actions that can be used with var_GetAndSet()
* @{
*/
enum {
VLC_VAR_BOOL_TOGGLE, /**< Invert a boolean value (param ignored) */
VLC_VAR_INTEGER_ADD, /**< Add parameter to an integer value */
VLC_VAR_INTEGER_OR, /**< Binary OR over an integer bits field */
VLC_VAR_INTEGER_NAND,/**< Binary NAND over an integer bits field */
};
/**@}*/
/*****************************************************************************
* Prototypes
*****************************************************************************/
VLC_API int var_Create( vlc_object_t *, const char *, int );
#define var_Create(a,b,c) var_Create( VLC_OBJECT(a), b, c )
VLC_API int var_Destroy( vlc_object_t *, const char * );
#define var_Destroy(a,b) var_Destroy( VLC_OBJECT(a), b )
VLC_API int var_Change( vlc_object_t *, const char *, int, vlc_value_t *, vlc_value_t * );
#define var_Change(a,b,c,d,e) var_Change( VLC_OBJECT(a), b, c, d, e )
VLC_API int var_Type( vlc_object_t *, const char * ) LIBVLC_USED;
#define var_Type(a,b) var_Type( VLC_OBJECT(a), b )
VLC_API int var_Set( vlc_object_t *, const char *, vlc_value_t );
#define var_Set(a,b,c) var_Set( VLC_OBJECT(a), b, c )
VLC_API int var_Get( vlc_object_t *, const char *, vlc_value_t * );
#define var_Get(a,b,c) var_Get( VLC_OBJECT(a), b, c )
VLC_API int var_SetChecked( vlc_object_t *, const char *, int, vlc_value_t );
#define var_SetChecked(o,n,t,v) var_SetChecked(VLC_OBJECT(o),n,t,v)
VLC_API int var_GetChecked( vlc_object_t *, const char *, int, vlc_value_t * );
#define var_GetChecked(o,n,t,v) var_GetChecked(VLC_OBJECT(o),n,t,v)
VLC_API int var_GetAndSet( vlc_object_t *, const char *, int, vlc_value_t * );
VLC_API int var_Inherit( vlc_object_t *, const char *, int, vlc_value_t * );
VLC_API int var_Command( vlc_object_t *, const char *, const char *, const char *, char ** );
#define var_Command(a,b,c,d,e) var_Command( VLC_OBJECT( a ), b, c, d, e )
VLC_API void var_FreeList( vlc_value_t *, vlc_value_t * );
/*****************************************************************************
* Variable callbacks
*****************************************************************************
* int MyCallback( vlc_object_t *p_this,
* char const *psz_variable,
* vlc_value_t oldvalue,
* vlc_value_t newvalue,
* void *p_data);
*****************************************************************************/
VLC_API int var_AddCallback( vlc_object_t *, const char *, vlc_callback_t, void * );
VLC_API int var_DelCallback( vlc_object_t *, const char *, vlc_callback_t, void * );
VLC_API int var_TriggerCallback( vlc_object_t *, const char * );
#define var_AddCallback(a,b,c,d) var_AddCallback( VLC_OBJECT(a), b, c, d )
#define var_DelCallback(a,b,c,d) var_DelCallback( VLC_OBJECT(a), b, c, d )
#define var_TriggerCallback(a,b) var_TriggerCallback( VLC_OBJECT(a), b )
/*****************************************************************************
* helpers functions
*****************************************************************************/
/**
* Set the value of an integer variable
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
* \param i The new integer value of this variable
*/
static inline int var_SetInteger( vlc_object_t *p_obj, const char *psz_name,
int64_t i )
{
vlc_value_t val;
val.i_int = i;
return var_SetChecked( p_obj, psz_name, VLC_VAR_INTEGER, val );
}
/**
* Set the value of an boolean variable
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
* \param b The new boolean value of this variable
*/
static inline int var_SetBool( vlc_object_t *p_obj, const char *psz_name, bool b )
{
vlc_value_t val;
val.b_bool = b;
return var_SetChecked( p_obj, psz_name, VLC_VAR_BOOL, val );
}
/**
* Set the value of a time variable
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
* \param i The new time value of this variable
*/
static inline int var_SetTime( vlc_object_t *p_obj, const char *psz_name, int64_t i )
{
vlc_value_t val;
val.i_time = i;
return var_SetChecked( p_obj, psz_name, VLC_VAR_TIME, val );
}
static inline int var_SetCoords( vlc_object_t *obj, const char *name,
int32_t x, int32_t y )
{
vlc_value_t val;
val.coords.x = x;
val.coords.y = y;
return var_SetChecked (obj, name, VLC_VAR_COORDS, val);
}
#define var_SetCoords(o,n,x,y) var_SetCoords(VLC_OBJECT(o),n,x,y)
/**
* Set the value of a float variable
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
* \param f The new float value of this variable
*/
static inline int var_SetFloat( vlc_object_t *p_obj, const char *psz_name, float f )
{
vlc_value_t val;
val.f_float = f;
return var_SetChecked( p_obj, psz_name, VLC_VAR_FLOAT, val );
}
/**
* Set the value of a string variable
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
* \param psz_string The new string value of this variable
*/
static inline int var_SetString( vlc_object_t *p_obj, const char *psz_name, const char *psz_string )
{
vlc_value_t val;
val.psz_string = (char *)psz_string;
return var_SetChecked( p_obj, psz_name, VLC_VAR_STRING, val );
}
/**
* Set the value of a pointer variable
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
* \param ptr The new pointer value of this variable
*/
static inline
int var_SetAddress( vlc_object_t *p_obj, const char *psz_name, void *ptr )
{
vlc_value_t val;
val.p_address = ptr;
return var_SetChecked( p_obj, psz_name, VLC_VAR_ADDRESS, val );
}
#define var_SetInteger(a,b,c) var_SetInteger( VLC_OBJECT(a),b,c)
#define var_SetBool(a,b,c) var_SetBool( VLC_OBJECT(a),b,c)
#define var_SetTime(a,b,c) var_SetTime( VLC_OBJECT(a),b,c)
#define var_SetFloat(a,b,c) var_SetFloat( VLC_OBJECT(a),b,c)
#define var_SetString(a,b,c) var_SetString( VLC_OBJECT(a),b,c)
#define var_SetAddress(o, n, p) var_SetAddress(VLC_OBJECT(o), n, p)
/**
* Get an integer value
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
*/
LIBVLC_USED
static inline int64_t var_GetInteger( vlc_object_t *p_obj, const char *psz_name )
{
vlc_value_t val;
if( !var_GetChecked( p_obj, psz_name, VLC_VAR_INTEGER, &val ) )
return val.i_int;
else
return 0;
}
/**
* Get a boolean value
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
*/
LIBVLC_USED
static inline bool var_GetBool( vlc_object_t *p_obj, const char *psz_name )
{
vlc_value_t val; val.b_bool = false;
if( !var_GetChecked( p_obj, psz_name, VLC_VAR_BOOL, &val ) )
return val.b_bool;
else
return false;
}
/**
* Get a time value
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
*/
LIBVLC_USED
static inline int64_t var_GetTime( vlc_object_t *p_obj, const char *psz_name )
{
vlc_value_t val; val.i_time = 0L;
if( !var_GetChecked( p_obj, psz_name, VLC_VAR_TIME, &val ) )
return val.i_time;
else
return 0;
}
static inline void var_GetCoords( vlc_object_t *obj, const char *name,
int32_t *px, int32_t *py )
{
vlc_value_t val;
if (likely(!var_GetChecked (obj, name, VLC_VAR_COORDS, &val)))
{
*px = val.coords.x;
*py = val.coords.y;
}
else
*px = *py = 0;
}
#define var_GetCoords(o,n,x,y) var_GetCoords(VLC_OBJECT(o),n,x,y)
/**
* Get a float value
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
*/
LIBVLC_USED
static inline float var_GetFloat( vlc_object_t *p_obj, const char *psz_name )
{
vlc_value_t val; val.f_float = 0.0;
if( !var_GetChecked( p_obj, psz_name, VLC_VAR_FLOAT, &val ) )
return val.f_float;
else
return 0.0;
}
/**
* Get a string value
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
*/
LIBVLC_USED LIBVLC_MALLOC
static inline char *var_GetString( vlc_object_t *p_obj, const char *psz_name )
{
vlc_value_t val; val.psz_string = NULL;
if( var_GetChecked( p_obj, psz_name, VLC_VAR_STRING, &val ) )
return NULL;
else
return val.psz_string;
}
LIBVLC_USED LIBVLC_MALLOC
static inline char *var_GetNonEmptyString( vlc_object_t *p_obj, const char *psz_name )
{
vlc_value_t val;
if( var_GetChecked( p_obj, psz_name, VLC_VAR_STRING, &val ) )
return NULL;
if( val.psz_string && *val.psz_string )
return val.psz_string;
free( val.psz_string );
return NULL;
}
LIBVLC_USED
static inline void *var_GetAddress( vlc_object_t *p_obj, const char *psz_name )
{
vlc_value_t val;
if( var_GetChecked( p_obj, psz_name, VLC_VAR_ADDRESS, &val ) )
return NULL;
else
return val.p_address;
}
/**
* Increment an integer variable
* \param p_obj the object that holds the variable
* \param psz_name the name of the variable
*/
static inline int64_t var_IncInteger( vlc_object_t *p_obj, const char *psz_name )
{
vlc_value_t val;
val.i_int = 1;
var_GetAndSet( p_obj, psz_name, VLC_VAR_INTEGER_ADD, &val );
return val.i_int;
}
#define var_IncInteger(a,b) var_IncInteger( VLC_OBJECT(a), b )
/**
* Decrement an integer variable
* \param p_obj the object that holds the variable
* \param psz_name the name of the variable
*/
static inline int64_t var_DecInteger( vlc_object_t *p_obj, const char *psz_name )
{
vlc_value_t val;
val.i_int = -1;
var_GetAndSet( p_obj, psz_name, VLC_VAR_INTEGER_ADD, &val );
return val.i_int;
}
#define var_DecInteger(a,b) var_DecInteger( VLC_OBJECT(a), b )
static inline uint64_t var_OrInteger( vlc_object_t *obj, const char *name,
unsigned v )
{
vlc_value_t val;
val.i_int = v;
var_GetAndSet( obj, name, VLC_VAR_INTEGER_OR, &val );
return val.i_int;
}
#define var_OrInteger(a,b,c) var_OrInteger(VLC_OBJECT(a),b,c)
static inline uint64_t var_NAndInteger( vlc_object_t *obj, const char *name,
unsigned v )
{
vlc_value_t val;
val.i_int = v;
var_GetAndSet( obj, name, VLC_VAR_INTEGER_NAND, &val );
return val.i_int;
}
#define var_NAndInteger(a,b,c) var_NAndInteger(VLC_OBJECT(a),b,c)
/**
* Create a integer variable with inherit and get its value.
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
*/
LIBVLC_USED
static inline int64_t var_CreateGetInteger( vlc_object_t *p_obj, const char *psz_name )
{
var_Create( p_obj, psz_name, VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
return var_GetInteger( p_obj, psz_name );
}
/**
* Create a boolean variable with inherit and get its value.
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
*/
LIBVLC_USED
static inline bool var_CreateGetBool( vlc_object_t *p_obj, const char *psz_name )
{
var_Create( p_obj, psz_name, VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
return var_GetBool( p_obj, psz_name );
}
/**
* Create a time variable with inherit and get its value.
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
*/
LIBVLC_USED
static inline int64_t var_CreateGetTime( vlc_object_t *p_obj, const char *psz_name )
{
var_Create( p_obj, psz_name, VLC_VAR_TIME | VLC_VAR_DOINHERIT );
return var_GetTime( p_obj, psz_name );
}
/**
* Create a float variable with inherit and get its value.
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
*/
LIBVLC_USED
static inline float var_CreateGetFloat( vlc_object_t *p_obj, const char *psz_name )
{
var_Create( p_obj, psz_name, VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
return var_GetFloat( p_obj, psz_name );
}
/**
* Create a string variable with inherit and get its value.
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
*/
LIBVLC_USED LIBVLC_MALLOC
static inline char *var_CreateGetString( vlc_object_t *p_obj,
const char *psz_name )
{
var_Create( p_obj, psz_name, VLC_VAR_STRING | VLC_VAR_DOINHERIT );
return var_GetString( p_obj, psz_name );
}
LIBVLC_USED LIBVLC_MALLOC
static inline char *var_CreateGetNonEmptyString( vlc_object_t *p_obj,
const char *psz_name )
{
var_Create( p_obj, psz_name, VLC_VAR_STRING | VLC_VAR_DOINHERIT );
return var_GetNonEmptyString( p_obj, psz_name );
}
/**
* Create an address variable with inherit and get its value.
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
*/
LIBVLC_USED
static inline void *var_CreateGetAddress( vlc_object_t *p_obj,
const char *psz_name )
{
var_Create( p_obj, psz_name, VLC_VAR_ADDRESS | VLC_VAR_DOINHERIT );
return var_GetAddress( p_obj, psz_name );
}
#define var_CreateGetInteger(a,b) var_CreateGetInteger( VLC_OBJECT(a),b)
#define var_CreateGetBool(a,b) var_CreateGetBool( VLC_OBJECT(a),b)
#define var_CreateGetTime(a,b) var_CreateGetTime( VLC_OBJECT(a),b)
#define var_CreateGetFloat(a,b) var_CreateGetFloat( VLC_OBJECT(a),b)
#define var_CreateGetString(a,b) var_CreateGetString( VLC_OBJECT(a),b)
#define var_CreateGetNonEmptyString(a,b) var_CreateGetNonEmptyString( VLC_OBJECT(a),b)
#define var_CreateGetAddress(a,b) var_CreateGetAddress( VLC_OBJECT(a),b)
/**
* Create a integer command variable with inherit and get its value.
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
*/
LIBVLC_USED
static inline int64_t var_CreateGetIntegerCommand( vlc_object_t *p_obj, const char *psz_name )
{
var_Create( p_obj, psz_name, VLC_VAR_INTEGER | VLC_VAR_DOINHERIT
| VLC_VAR_ISCOMMAND );
return var_GetInteger( p_obj, psz_name );
}
/**
* Create a boolean command variable with inherit and get its value.
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
*/
LIBVLC_USED
static inline bool var_CreateGetBoolCommand( vlc_object_t *p_obj, const char *psz_name )
{
var_Create( p_obj, psz_name, VLC_VAR_BOOL | VLC_VAR_DOINHERIT
| VLC_VAR_ISCOMMAND );
return var_GetBool( p_obj, psz_name );
}
/**
* Create a time command variable with inherit and get its value.
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
*/
LIBVLC_USED
static inline int64_t var_CreateGetTimeCommand( vlc_object_t *p_obj, const char *psz_name )
{
var_Create( p_obj, psz_name, VLC_VAR_TIME | VLC_VAR_DOINHERIT
| VLC_VAR_ISCOMMAND );
return var_GetTime( p_obj, psz_name );
}
/**
* Create a float command variable with inherit and get its value.
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
*/
LIBVLC_USED
static inline float var_CreateGetFloatCommand( vlc_object_t *p_obj, const char *psz_name )
{
var_Create( p_obj, psz_name, VLC_VAR_FLOAT | VLC_VAR_DOINHERIT
| VLC_VAR_ISCOMMAND );
return var_GetFloat( p_obj, psz_name );
}
/**
* Create a string command variable with inherit and get its value.
*
* \param p_obj The object that holds the variable
* \param psz_name The name of the variable
*/
LIBVLC_USED LIBVLC_MALLOC
static inline char *var_CreateGetStringCommand( vlc_object_t *p_obj,
const char *psz_name )
{
var_Create( p_obj, psz_name, VLC_VAR_STRING | VLC_VAR_DOINHERIT
| VLC_VAR_ISCOMMAND );
return var_GetString( p_obj, psz_name );
}
LIBVLC_USED LIBVLC_MALLOC
static inline char *var_CreateGetNonEmptyStringCommand( vlc_object_t *p_obj,
const char *psz_name )
{
var_Create( p_obj, psz_name, VLC_VAR_STRING | VLC_VAR_DOINHERIT
| VLC_VAR_ISCOMMAND );
return var_GetNonEmptyString( p_obj, psz_name );
}
#define var_CreateGetIntegerCommand(a,b) var_CreateGetIntegerCommand( VLC_OBJECT(a),b)
#define var_CreateGetBoolCommand(a,b) var_CreateGetBoolCommand( VLC_OBJECT(a),b)
#define var_CreateGetTimeCommand(a,b) var_CreateGetTimeCommand( VLC_OBJECT(a),b)
#define var_CreateGetFloatCommand(a,b) var_CreateGetFloatCommand( VLC_OBJECT(a),b)
#define var_CreateGetStringCommand(a,b) var_CreateGetStringCommand( VLC_OBJECT(a),b)
#define var_CreateGetNonEmptyStringCommand(a,b) var_CreateGetNonEmptyStringCommand( VLC_OBJECT(a),b)
LIBVLC_USED
static inline int var_CountChoices( vlc_object_t *p_obj, const char *psz_name )
{
vlc_value_t count;
if( var_Change( p_obj, psz_name, VLC_VAR_CHOICESCOUNT, &count, NULL ) )
return 0;
return count.i_int;
}
#define var_CountChoices(a,b) var_CountChoices( VLC_OBJECT(a),b)
static inline bool var_ToggleBool( vlc_object_t *p_obj, const char *psz_name )
{
vlc_value_t val;
var_GetAndSet( p_obj, psz_name, VLC_VAR_BOOL_TOGGLE, &val );
return val.b_bool;
}
#define var_ToggleBool(a,b) var_ToggleBool( VLC_OBJECT(a),b )
LIBVLC_USED
static inline bool var_InheritBool( vlc_object_t *obj, const char *name )
{
vlc_value_t val;
if( var_Inherit( obj, name, VLC_VAR_BOOL, &val ) )
val.b_bool = false;
return val.b_bool;
}
#define var_InheritBool(o, n) var_InheritBool(VLC_OBJECT(o), n)
LIBVLC_USED
static inline int64_t var_InheritInteger( vlc_object_t *obj, const char *name )
{
vlc_value_t val;
if( var_Inherit( obj, name, VLC_VAR_INTEGER, &val ) )
val.i_int = 0;
return val.i_int;
}
#define var_InheritInteger(o, n) var_InheritInteger(VLC_OBJECT(o), n)
LIBVLC_USED
static inline float var_InheritFloat( vlc_object_t *obj, const char *name )
{
vlc_value_t val;
if( var_Inherit( obj, name, VLC_VAR_FLOAT, &val ) )
val.f_float = 0.;
return val.f_float;
}
#define var_InheritFloat(o, n) var_InheritFloat(VLC_OBJECT(o), n)
LIBVLC_USED LIBVLC_MALLOC
static inline char *var_InheritString( vlc_object_t *obj, const char *name )
{
vlc_value_t val;
if( var_Inherit( obj, name, VLC_VAR_STRING, &val ) )
val.psz_string = NULL;
else if( val.psz_string && !*val.psz_string )
{
free( val.psz_string );
val.psz_string = NULL;
}
return val.psz_string;
}
#define var_InheritString(o, n) var_InheritString(VLC_OBJECT(o), n)
LIBVLC_USED
static inline mtime_t var_InheritTime( vlc_object_t *obj, const char *name )
{
vlc_value_t val;
if( var_Inherit( obj, name, VLC_VAR_TIME, &val ) )
val.i_time = 0;
return val.i_time;
}
#define var_InheritTime(o, n) var_InheritTime(VLC_OBJECT(o), n)
LIBVLC_USED
static inline void *var_InheritAddress( vlc_object_t *obj, const char *name )
{
vlc_value_t val;
if( var_Inherit( obj, name, VLC_VAR_ADDRESS, &val ) )
val.p_address = NULL;
return val.p_address;
}
#define var_InheritAddress(o, n) var_InheritAddress(VLC_OBJECT(o), n)
VLC_API int var_InheritURational( vlc_object_t *, unsigned *num, unsigned *den, const char *var );
#define var_InheritURational(a,b,c,d) var_InheritURational(VLC_OBJECT(a), b, c, d)
#define var_GetInteger(a,b) var_GetInteger( VLC_OBJECT(a),b)
#define var_GetBool(a,b) var_GetBool( VLC_OBJECT(a),b)
#define var_GetTime(a,b) var_GetTime( VLC_OBJECT(a),b)
#define var_GetFloat(a,b) var_GetFloat( VLC_OBJECT(a),b)
#define var_GetString(a,b) var_GetString( VLC_OBJECT(a),b)
#define var_GetNonEmptyString(a,b) var_GetNonEmptyString( VLC_OBJECT(a),b)
#define var_GetAddress(a,b) var_GetAddress( VLC_OBJECT(a),b)
VLC_API int var_LocationParse(vlc_object_t *, const char *mrl, const char *prefix);
#define var_LocationParse(o, m, p) var_LocationParse(VLC_OBJECT(o), m, p)
/**
* @}
*/
#endif /* _VLC_VARIABLES_H */
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