Genvid_Subscribe()

GenvidStatus Genvid_Subscribe(const char *id, GenvidEventSummaryCallback callback, void *userData)

Subscribes to the event channel whose reduce operation is named id.

The callback parameter specifies the function to call when data is available.

The userData is a generic user pointer that will be sent to callback when it is invoked.

The call is asynchronous, it will return one of the following values :

GenvidStatus_UninitializedSDK : The Genvid library was not initialised before calling it.

GenvidStatus_InvalidParameter : id is null.

GenvidStatus_InvalidState : The asynchronous handler was not initialised.

GenvidStatus_InvalidParameter : One of the parameters is invalid.

See Genvid_Unsubscribe().