ISpSREngine (SAPI 5.4)
Microsoft Speech API 5.4
ISpSREngine
This is the main interface that engine developers must implement to have a working SAPI SR engine. Engine vendors need to implement this interface in an InProc COM object with the threading model "Both". This object can also implement the ISpObjectWithToken interface. SR engines may also have additional objects implementing ISpTokenUI, ISpSRAlternates, and a custom engine-extension object.
The SR Engine Guide describes in detail how an SR engine interacts with SAPI and how the methods of this interface are implemented.
Applications do not directly call the methods on this interface, all calls are made by SAPI.
Implemented By
- SR engine developers as the main interface between their SR engine and SAPI.
How Created
- Only SAPI will directly create this object. When an application creates a RecoContext object, either shared or InProc, then SAPI will find the appropriate recognizer object token and create the object implementing this interface from the CLSID in the object token.