C++ default constructor.

Destructor.

Invoked when grammar has been activated.

Activates a grammar

Invoked by the adaptation hw device when model adaptation has finished its processing.

Adapts recognition models

Called by DevSound when a buffer is available to be read.

Called by DevSound when a buffer is available to be written.

Cancels the current or started tasks.

Notifies that grammar combination has been done.

Invoked when grammar combining is needed

Does grammar compilation.

Computes new grammar size with given number of variants.

Configure the sound device according to parameters in the resource file.

By default Symbian 2nd phase constructor is private.

Not used by DevASR

Invoked when grammar has been deactivated.

Deactivates a grammar

Prints DevASR state information for debugging

Handles device event.

Implements cancellation of an outstanding request.

This function is called as part of the active object's Cancel().

It must call the appropriate cancel function offered by the active object's asynchronous service provider. The asynchronous service provider's cancel is expected to act immediately.

DoCancel() must not wait for event completion; this is handled by Cancel().

CActive::Cancel

Empties and copies the data to holding buffer.

This method is used to indicate the end of a recognition session.

Invoked by the front-end when EOU has been detected.

Invoked when a feature vector is available.

Fill the received buffer with utterance data upto the specified length.

Retreive the properties of the underlying speech recognition engine.

Get the specified grammar.

Retreive the raw audio data accumulated during recording.

Async handler for a play request.

Async handler for a record request.

Async handler for a UtteranceDataProcessed event.

Invoked by the algorithm manager when the frontend initialization is completed.

Initializes the front-end module in the speech recognition engine. The frontend module used during training/recognition functions is started as a result. This method is intended to be used in conjunction with InitTrainBE().

Initialize the recognition engine back-end. The module responsible for recognition function is started as a result. This method must be used before any recognition operations and intended to be used in conjunction with InitFrontEnd().

Invoked by the algorithm manager when the recognition backend initialization is completed.

Called by DevSound when initialization is completed.

Initializes DevSound for sampling

Checks if grammar is active or not

Checks if grammar is loaded or not

Load the specified recognizer parameter(s). These parameters are used to alter the recognizer's default parameters. The parameters are specified as attribute-value pairs.

Invoked by the algorithm manager when loading grammar is completed.

Load the specified grammar into the recognizer.

Invoked by the algorithm manager when loading lexicon is completed.

Load the specified lexicon into the recognizer.

Invoked by the algorithm manager when loading models is completed.

Load the specified models into the recognizer.

Two-phased constructors.

Handles play completion or cancel event from DevSound.

Pre-starts recording before StartRecording call.

Prunes unnecessay rule variants away from grammar.

Completes a request with specified status.

Invoked when the recognition process is completed.

Handles record completion or cancel event from DevSound.

Invoked by the front-end when utterance data is needed.

Resolves result.

From CActive.

Handles audio policy events from DevSound.

Call to give speech data to recognizer.

Use to set the priority of the sound device

Starts sampling with DevSound

Request to start a recognition session.

Request to begin recording.

Starts speaker independent training from text.

Transition from current state to target state if possible.

Ends recording process

Handles tone play completion or cancel event from DevSound Tone is not used by DevASR so this event is not expected.

Invoked when the training process is completed.

Translate system error codes to DevASR cause codes.

Invoked when grammar has been unloaded.

Unloads the specified grammar from the recognizer.

Request to unload the specified rule in the grammar from recognizer.

Invoked when rule unloading has been done.