LVSpeechPort::StreamSetStateChangeCallBack

Specifies a call-back function for handling stream state changes.

Function

• int StreamSetStateChangeCallBack(void* fn, void* UserData)

Parameters

fn

Pointer to callback function to receive state change updates. See Stream Callback.

UserData

Application defined data sent back in callback.

Return Values

LV_SUCCESS

No errors; data accepted.

LV_INVALID_HPORT

The port is not valid (either CreateClient has not been called or DestroyClient has been called prior to this call).

LV_FAILURE

The operation failed because the port was shutting down.

LV_EXCEPTION

An exception occured while processing the request.

Remarks

Each time a streams status changes, this callback will be called. Here are the possible Stream Status messages.

See Also

• Stream Status
• LVSpeechPort::StreamGetStatus
• LV_SRE_StreamStateChangeFn (C API)