The initial framework for live streaming Speech to Text. STT derived
classes now can report that they support live streaming via their
"can_stream" property. If True, the following member functions will be
called on the object:
stream_start() - Called when a stream is starting. Should setup any
persistent state required to process speech to text.
stream_data(chunk) - Called when a chunk of audio data has been
captured.
stream_stop() - Called when a stream should be stopped. Should tear down
any state setup with stream_start(). Note that this may be called at
anytime (even if stream_start() has not been called).
Note that the execute() API is still used to get the text utterance from
the class.
A typical sequence of calls would be:
stream_start()
stream_data(...)
stream_data(...)
stream_data(...)
stream_data(...)
...
execute(...)
stream_stop()
David Wagner
Joshua Watt
Matthew D. Scholefield