// Allocate and initialize the correct subclass of ImplAAFPropertyValue
// for the given OMProperty.
AAFRESULT STDMETHODCALLTYPE
ImplAAFTypeDef::CreatePropertyValue(
OMProperty *property,
ImplAAFPropertyValue ** ppPropertyValue ) const
{
AAFRESULT result = AAFRESULT_SUCCESS;
ASSERTU (property && ppPropertyValue);
if (NULL == property || NULL == ppPropertyValue)
return AAFRESULT_NULL_PARAM;
*ppPropertyValue = NULL; // initialize out parameter
ASSERTU (property->definition());
if (NULL == property->definition())
return AAFRESULT_INVALID_PARAM;
const OMType *type = property->definition()->type();
ASSERTU (type);
ImplAAFTypeDef *ptd = const_cast<ImplAAFTypeDef *>
(dynamic_cast<const ImplAAFTypeDef *>(type));
ASSERTU (ptd);
if (NULL == ptd)
return AAFRESULT_INVALID_PARAM;
ImplAAFPropValData *pvd = NULL;
pvd = (ImplAAFPropValData*) CreateImpl (CLSID_AAFPropValData);
if (!pvd)
return AAFRESULT_NOMEMORY;
result = pvd->Initialize (ptd);
if (AAFRESULT_SUCCEEDED(result))
{
// set the storage in the prop value
OMUInt32 bitsSize;
ASSERTU (property);
bitsSize = property->bitsSize ();
aafMemPtr_t pBits = NULL;
// Bobt hack! This should be removed once we have proper
// integration with OM property def support.
if (! property->isOptional() || property->isPresent ())
{
result = pvd->AllocateBits (bitsSize, &pBits);
if (AAFRESULT_SUCCEEDED (result))
{
if (bitsSize)
{
ASSERTU (pBits);
property->getBits (pBits, bitsSize);
}
}
}
}
if (AAFRESULT_SUCCEEDED(result))
{
*ppPropertyValue = pvd; // ref count is already 1.
pvd = NULL;
}
else
{
pvd->ReleaseReference(); // delete the new object.
}
return (result) ;
}
