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Move variable type assertions into the core

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Rémi Denis-Courmont 2008-12-29 22:37:57 +02:00
parent 4dbd738aaf
commit 09ea190809
3 changed files with 65 additions and 76 deletions
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57
include/vlc_variables.h
View File

@ -25,8 +25,6 @@
#ifndef VLC_VARIABLES_H
#define VLC_VARIABLES_H 1
#include <assert.h>
/**
* \file
* This file defines functions and structures for dynamic variables in vlc
@ -129,6 +127,8 @@ VLC_EXPORT( int, __var_Change, ( vlc_object_t *, const char *, int, vlc_value_t
VLC_EXPORT( int, __var_Type, ( vlc_object_t *, const char * ) LIBVLC_USED );
VLC_EXPORT( int, __var_Set, ( vlc_object_t *, const char *, vlc_value_t ) );
VLC_EXPORT( int, __var_Get, ( vlc_object_t *, const char *, vlc_value_t * ) );
VLC_EXPORT( int, var_SetChecked, ( vlc_object_t *, const char *, int, vlc_value_t ) );
VLC_EXPORT( int, var_GetChecked, ( vlc_object_t *, const char *, int, vlc_value_t * ) );
#define var_Command(a,b,c,d,e) __var_Command( VLC_OBJECT( a ), b, c, d, e )
VLC_EXPORT( int, __var_Command, ( vlc_object_t *, const char *, const char *, const char *, char ** ) );
@ -192,21 +192,6 @@ VLC_EXPORT( int, __var_TriggerCallback, ( vlc_object_t *, const char * ) );
* helpers functions
*****************************************************************************/
#ifndef NDEBUG
/**
* This function assert the variable is of the expected type or it
* is not defined
*/
static inline void __var_AssertType( vlc_object_t *p_obj, const char *psz_name,
int i_expected )
{
const int i_type = __var_Type( p_obj, psz_name ) & VLC_VAR_CLASS;
assert( i_type == 0 || i_type == (i_expected&VLC_VAR_CLASS) );
}
#else
# define __var_AssertType( o, n, e ) (void)(o, n, e)
#endif
/**
* Set the value of an integer variable
*
@ -218,8 +203,7 @@ static inline int __var_SetInteger( vlc_object_t *p_obj, const char *psz_name, i
{
vlc_value_t val;
val.i_int = i;
__var_AssertType( p_obj, psz_name, VLC_VAR_INTEGER );
return __var_Set( p_obj, psz_name, val );
return var_SetChecked( p_obj, psz_name, VLC_VAR_INTEGER, val );
}
#define var_SetInteger(a,b,c) __var_SetInteger( VLC_OBJECT(a),b,c)
/**
@ -233,8 +217,7 @@ static inline int __var_SetBool( vlc_object_t *p_obj, const char *psz_name, bool
{
vlc_value_t val;
val.b_bool = b;
__var_AssertType( p_obj, psz_name, VLC_VAR_BOOL );
return __var_Set( p_obj, psz_name, val );
return var_SetChecked( p_obj, psz_name, VLC_VAR_BOOL, val );
}
/**
@ -248,8 +231,7 @@ static inline int __var_SetTime( vlc_object_t *p_obj, const char *psz_name, int6
{
vlc_value_t val;
val.i_time = i;
__var_AssertType( p_obj, psz_name, VLC_VAR_TIME );
return __var_Set( p_obj, psz_name, val );
return var_SetChecked( p_obj, psz_name, VLC_VAR_TIME, val );
}
/**
@ -263,8 +245,7 @@ static inline int __var_SetFloat( vlc_object_t *p_obj, const char *psz_name, flo
{
vlc_value_t val;
val.f_float = f;
__var_AssertType( p_obj, psz_name, VLC_VAR_FLOAT );
return __var_Set( p_obj, psz_name, val );
return var_SetChecked( p_obj, psz_name, VLC_VAR_FLOAT, val );
}
/**
@ -278,8 +259,7 @@ static inline int __var_SetString( vlc_object_t *p_obj, const char *psz_name, co
{
vlc_value_t val;
val.psz_string = (char *)psz_string;
__var_AssertType( p_obj, psz_name, VLC_VAR_STRING );
return __var_Set( p_obj, psz_name, val );
return var_SetChecked( p_obj, psz_name, VLC_VAR_STRING, val );
}
/**
@ -292,8 +272,7 @@ static inline int __var_SetVoid( vlc_object_t *p_obj, const char *psz_name )
{
vlc_value_t val;
val.b_bool = true;
__var_AssertType( p_obj, psz_name, VLC_VAR_VOID );
return __var_Set( p_obj, psz_name, val );
return var_SetChecked( p_obj, psz_name, VLC_VAR_VOID, val );
}
#define var_SetVoid(a,b) __var_SetVoid( VLC_OBJECT(a),b)
@ -324,9 +303,8 @@ static inline int __var_SetVoid( vlc_object_t *p_obj, const char *psz_name )
LIBVLC_USED
static inline int __var_GetInteger( vlc_object_t *p_obj, const char *psz_name )
{
vlc_value_t val;val.i_int = 0;
__var_AssertType( p_obj, psz_name, VLC_VAR_INTEGER );
if( !__var_Get( p_obj, psz_name, &val ) )
vlc_value_t val;
if( !var_GetChecked( p_obj, psz_name, VLC_VAR_INTEGER, &val ) )
return val.i_int;
else
return 0;
@ -343,8 +321,7 @@ static inline int __var_GetBool( vlc_object_t *p_obj, const char *psz_name )
{
vlc_value_t val; val.b_bool = false;
__var_AssertType( p_obj, psz_name, VLC_VAR_BOOL );
if( !__var_Get( p_obj, psz_name, &val ) )
if( !var_GetChecked( p_obj, psz_name, VLC_VAR_BOOL, &val ) )
return val.b_bool;
else
return false;
@ -360,8 +337,7 @@ 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;
__var_AssertType( p_obj, psz_name, VLC_VAR_TIME );
if( !__var_Get( p_obj, psz_name, &val ) )
if( !var_GetChecked( p_obj, psz_name, VLC_VAR_TIME, &val ) )
return val.i_time;
else
return 0;
@ -377,8 +353,7 @@ 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;
__var_AssertType( p_obj, psz_name, VLC_VAR_FLOAT );
if( !__var_Get( p_obj, psz_name, &val ) )
if( !var_GetChecked( p_obj, psz_name, VLC_VAR_FLOAT, &val ) )
return val.f_float;
else
return 0.0;
@ -394,8 +369,7 @@ LIBVLC_USED
static inline char *__var_GetString( vlc_object_t *p_obj, const char *psz_name )
{
vlc_value_t val; val.psz_string = NULL;
__var_AssertType( p_obj, psz_name, VLC_VAR_STRING );
if( __var_Get( p_obj, psz_name, &val ) )
if( var_GetChecked( p_obj, psz_name, VLC_VAR_STRING, &val ) )
return NULL;
else
return val.psz_string;
@ -405,8 +379,7 @@ LIBVLC_USED
static inline char *__var_GetNonEmptyString( vlc_object_t *p_obj, const char *psz_name )
{
vlc_value_t val;
__var_AssertType( p_obj, psz_name, VLC_VAR_STRING );
if( __var_Get( p_obj, psz_name, &val ) )
if( var_GetChecked( p_obj, psz_name, VLC_VAR_STRING, &val ) )
return NULL;
if( *val.psz_string )
return val.psz_string;

2
src/libvlccore.sym
View File

@ -417,7 +417,9 @@ __var_Create
__var_DelCallback
__var_Destroy
__var_Get
var_GetChecked
__var_Set
var_SetChecked
__var_TriggerCallback
__var_Type
video_format_FixRgb

82
src/misc/variables.c
View File

@ -34,6 +34,7 @@
#include "libvlc.h"
#include "vlc_interface.h"
#include <assert.h>
/*****************************************************************************
* Private types
@ -734,14 +735,8 @@ int __var_Type( vlc_object_t *p_this, const char *psz_name )
return i_type;
}
/**
* Set a variable's value
*
* \param p_this The object that hold the variable
* \param psz_name The name of the variable
* \param val the value to set
*/
int __var_Set( vlc_object_t *p_this, const char *psz_name, vlc_value_t val )
int var_SetChecked( vlc_object_t *p_this, const char *psz_name,
int expected_type, vlc_value_t val )
{
int i_var;
variable_t *p_var;
@ -758,6 +753,8 @@ int __var_Set( vlc_object_t *p_this, const char *psz_name, vlc_value_t val )
}
p_var = &p_priv->p_vars[i_var];
assert( (p_var->i_type & VLC_VAR_CLASS) == 0 || expected_type == 0 ||
(p_var->i_type & VLC_VAR_CLASS) == expected_type );
/* Duplicate data if needed */
p_var->ops->pf_dup( &val );
@ -811,6 +808,48 @@ int __var_Set( vlc_object_t *p_this, const char *psz_name, vlc_value_t val )
return VLC_SUCCESS;
}
/**
* Set a variable's value
*
* \param p_this The object that hold the variable
* \param psz_name The name of the variable
* \param val the value to set
*/
int __var_Set( vlc_object_t *p_this, const char *psz_name, vlc_value_t val )
{
return var_SetChecked( p_this, psz_name, 0, val );
}
int var_GetChecked( vlc_object_t *p_this, const char *psz_name,
int expected_type, vlc_value_t *p_val )
{
vlc_object_internals_t *p_priv = vlc_internals( p_this );
int i_var, err = VLC_SUCCESS;
vlc_mutex_lock( &p_priv->var_lock );
i_var = Lookup( p_priv->p_vars, p_priv->i_vars, psz_name );
if( i_var >= 0 )
{
variable_t *p_var = &p_priv->p_vars[i_var];
assert( (p_var->i_type & VLC_VAR_CLASS) == 0 || expected_type == 0 ||
(p_var->i_type & VLC_VAR_CLASS) == expected_type );
/* Really get the variable */
*p_val = p_var->val;
/* Duplicate value if needed */
p_var->ops->pf_dup( p_val );
}
else
err = VLC_ENOVAR;
vlc_mutex_unlock( &p_priv->var_lock );
return err;
}
/**
* Get a variable's value
*
@ -821,34 +860,9 @@ int __var_Set( vlc_object_t *p_this, const char *psz_name, vlc_value_t val )
*/
int __var_Get( vlc_object_t *p_this, const char *psz_name, vlc_value_t *p_val )
{
int i_var;
variable_t *p_var;
vlc_object_internals_t *p_priv = vlc_internals( p_this );
vlc_mutex_lock( &p_priv->var_lock );
i_var = Lookup( p_priv->p_vars, p_priv->i_vars, psz_name );
if( i_var < 0 )
{
vlc_mutex_unlock( &p_priv->var_lock );
return VLC_ENOVAR;
}
p_var = &p_priv->p_vars[i_var];
/* Really get the variable */
*p_val = p_var->val;
/* Duplicate value if needed */
p_var->ops->pf_dup( p_val );
vlc_mutex_unlock( &p_priv->var_lock );
return VLC_SUCCESS;
return var_GetChecked( p_this, psz_name, 0, p_val );
}
/**
* Register a callback in a variable
*