Acquires a required license and initializes a speech port client object for a subsequent speech recognition, answering machine detection, DTMF decode or grammar parse operation. The type of license that would be acquired depends on the value set for PROP_EX_LICENSE_TYPE.
Function
- HPORT LV_SRE_CreateClient(int* error_return_code, ExportLogMsg log_callback, void* log_callback_user_data, int log_verbosity)
Parameters
error_return_code
An error code indicating why the creation of a speech port client object failed.
log_callback
Pointer to a function which will receive logging information from the object.
log_callback_user_data
A void pointer to client application-defined data. This data will be passed to the ExportLogMsg function to serve as a context in the callback.
log_verbosity
Sets the base verbosity level for log_callback. Range: 0 - 6. All log messages bearing verbosity greater than this value are rejected.
0 - minimal logging info
6 - maximum logging info
Return Values
Non-NULL
Port initialized successfully. Returned value is a handle to the speech port client object.
NULL
The call failed. The reason for the failure will be available in error_return_code.
Possible values returned with error_return_code
LV_SUCCESS
The port opened successfully.
LV_LVLANG_UNDEFINED
There was an environment/config setting issue. See log for more details.
LV_OPEN_PORT_FAILED__LICENSES_EXCEEDED
Failed to acquire the requred license - either no licenses are available or all available licenses are already in use.
LV_EXCEPTION
An exception occurred while processing the request.
Remarks
The returned handle is used by most other API functions, and when done using it, it must be released by calling LV_SRE_DestroyClient to release the acquired license and free up other associated resources.
C Code
void InitializePort()
{
int error_code;
hport = LV_SRE_CreateClient(&error_code, NULL, NULL, 0);
printf("Initializing the port.\n");
// Once the port is set up, you can then set the engine properties and,
// if applicable, Voice Activated Detection(VAD) parameters.
}
See Also
