Provides a template for creating class factories.
In DirectShow, class factories are specialized using the CFactoryTemplate class, also called the factory template. Each class factory holds a pointer to a factory template. The factory template contains information about a COM object, including the object's class identifier (CLSID) and a pointer to a function that creates the object.
In your DLL, declare a global array of factory templates named g_Templates. Include one factory template for each object in the DLL. When the DllGetClassObject function makes a new class factory, it searches the array for a template with a matching CLSID. Assuming it finds one, it creates a class factory that holds a pointer to the matching template. When the client calls IClassFactory::CreateInstance, the class factory calls the instantiation function defined in the template.
For more information, see How to Create a DirectShow Filter DLL.
|Public Member Variables||Description|
|m_Name||Name of the filter.|
|m_ClsID||Pointer to the CLSID of the object.|
|m_lpfnNew||Pointer to a function that creates an instance of the object.|
|m_lpfnInit||Pointer to a function that gets called from the DLL entry point.|
|m_pAMovieSetup_Filter||Pointer to an AMOVIESETUP_FILTER structure.|
|IsClassID||Determines whether a CLSID matches this class template.|
|CreateInstance||Calls the object-creation function for the class.|