Genvid_Subscribe()¶
-
GenvidStatus
Genvid_Subscribe
(const char *id, GenvidEventSummaryCallback callback, void *userData)¶ Subscribes to the event channel with the reduce-operation name
id
.The
callback
parameter specifies the function to call when data is available.The
userData
is a generic user pointer that is sent tocallback
when invoked.The call is asynchronous.
It returns one of the following values:
GenvidStatus_UninitializedSDK: The Genvid library was not initialized before calling it.
GenvidStatus_InvalidParameter:
id
is null.GenvidStatus_InvalidState: The asynchronous handler was not initialized.
GenvidStatus_InvalidParameter: One of the parameters is invalid.
See Genvid_Unsubscribe() for more information.