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/**************************************************************************
A/V Stream Camera Sample
Copyright (c) 2013, Microsoft Corporation.
File:
ExtendedProperty.h
Abstract:
This file contains the helper class CExtendedProperty and the coommon
base class CExtendedHeader.
CExtendedHeader provides initialization and accessor functions for
KSCAMERA_EXTENDEDPROP_HEADER.
CExtendedProperty provides initialization and accessor functions for
KSCAMERA_EXTENDEDPROP_VALUE.
CExtendedProperty also combines KSCAMERA_EXTENDEDPROP_HEADER and
KSCAMERA_EXTENDEDPROP_VALUE into a single object for use in the
macros and templates used by our filter and sensor classes.
History:
created 5/21/2013
**************************************************************************/
//
// Helper class for Extended Properties.
//
class CExtendedHeader
: public KSCAMERA_EXTENDEDPROP_HEADER
{
public:
// Standardized ctors to help ensure a consistant definition.
CExtendedHeader( ULONGLONG flags=0, ULONG result=STATUS_SUCCESS )
{
Version = KSCAMERA_EXTENDEDPROP_VERSION;
PinId = KSCAMERA_EXTENDEDPROP_FILTERSCOPE;
Size = sizeof(*this);
Result = result;
Capability = 0;
Flags = flags;
}
CExtendedHeader( KSCAMERA_EXTENDEDPROP_HEADER &hdr )
: KSCAMERA_EXTENDEDPROP_HEADER(hdr)
{
Size = sizeof(*this);
}
bool isValid()
{
return Version == KSCAMERA_EXTENDEDPROP_VERSION;
}
};
class CExtendedProperty
: public CExtendedHeader
{
public:
KSCAMERA_EXTENDEDPROP_VALUE m_Value;
public:
// Standardized ctors to help ensure a consistant definition.
CExtendedProperty( ULONGLONG flags=0, ULONG result=STATUS_SUCCESS )
: CExtendedHeader( flags, result )
{
Size = sizeof(*this);
m_Value.Value.ull = 0;
}
CExtendedProperty( KSCAMERA_EXTENDEDPROP_HEADER &hdr )
: CExtendedHeader(hdr)
{
Size = sizeof(*this);
m_Value.Value.ull = 0;
}
// Access operators let you fetch the value from the value field.
operator LONG()
{
return m_Value.Value.l;
}
operator ULONG()
{
return m_Value.Value.ul;
}
operator LONGLONG()
{
return m_Value.Value.ll;
}
operator ULONGLONG()
{
return m_Value.Value.ull;
}
operator KSCAMERA_EXTENDEDPROP_VALUE()
{
return m_Value;
}
// Assignment operators let you assign a value to the property.
CExtendedProperty &
operator =( LONG x )
{
m_Value.Value.l = x;
return *this;
}
CExtendedProperty &
operator =( LONGLONG x )
{
m_Value.Value.ll = x;
return *this;
}
CExtendedProperty &
operator =( ULONG x )
{
m_Value.Value.ul = x;
return *this;
}
CExtendedProperty &
operator =( ULONGLONG x )
{
m_Value.Value.ull = x;
return *this;
}
bool isValid()
{
return CExtendedHeader::isValid() &&
(Size >= sizeof(*this)) ;
}
};
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