from win32com.client import constants
import win32com.client
import pythoncom
 
class SpeechRecognition:
    """ Initialize the speech recognition with the passed in list of words """
    def __init__(self, wordsToAdd):
        # For text-to-speech
        self.speaker = win32com.client.Dispatch("SAPI.SpVoice")
        # For speech recognition - first create a listener
        self.listener = win32com.client.Dispatch("SAPI.SpSharedRecognizer")
        # Then a recognition context
        self.context = self.listener.CreateRecoContext()
        # which has an associated grammar
        self.grammar = self.context.CreateGrammar()
        # Do not allow free word recognition - only command and control
			# recognizing the words in the grammar only
        self.grammar.DictationSetState(0)
        # Create a new rule for the grammar, that is top level (so it begins
			# a recognition) and dynamic (ie we can change it at runtime)
        self.wordsRule = self.grammar.Rules.Add("wordsRule",
                        constants.SRATopLevel + constants.SRADynamic, 0)
        # Clear the rule (not necessary first time, but if we're changing it
			# dynamically then it's useful)
        self.wordsRule.Clear()
        # And go through the list of words, adding each to the rule
        [ self.wordsRule.InitialState.AddWordTransition(None, word) for word in wordsToAdd ]
        # Set the wordsRule to be active
        self.grammar.Rules.Commit()
        self.grammar.CmdSetRuleState("wordsRule", 1)
        # Commit the changes to the grammar
        self.grammar.Rules.Commit()
        # And add an event handler that's called back when recognition occurs
        self.eventHandler = ContextEvents(self.context)
        # Announce we've started
        self.say("Started successfully")
    def say(self, phrase):
        self.speaker.Speak(phrase)
 
 
"""The callback class that handles the events raised by the speech object.
    See "Automation | SpSharedRecoContext (Events)" in the MS Speech SDK
    online help for documentation of the other events supported. """
class ContextEvents(win32com.client.getevents("SAPI.SpSharedRecoContext")):
    """Called when a word/phrase is successfully recognized  -
        ie it is found in a currently open grammar with a sufficiently high
	confidence"""
    def OnRecognition(self, StreamNumber, StreamPosition, RecognitionType, Result):
        newResult = win32com.client.Dispatch(Result)
        print "You said: ",newResult.PhraseInfo.GetText()
 
if __name__=='__main__':
    wordsToAdd = [ "One", "Two", "Three", "Four" ]
    speechReco = SpeechRecognition(wordsToAdd)
    while 1:
        pythoncom.PumpWaitingMessages()

    
    import speech
    import time
    def do_stuff(phrase, listener):
       speech.say("You said: %s" % phrase)
    speech.listenforanything(do_stuff)
    while True:
        time.sleep(.1)

import speech
import time
def do_stuff(phrase, listener):
	speech.say("You said: %s" % phrase)
speech.listenforanything(do_stuff)

import speech

# Prints a prompt and returns whatever text it heard you say
answer = speech.input("How do you like your eggs?")
print "Oh, you like them %s" % answer

# Prints a prompt and only returns when it hears one of a few phrases
answer = speech.input("Are you there?", ["Yes", "No", "Shut up"])
print "You said: %s" % answer

# Both the prompt and the list of phrases are optional.
answer = speech.input()
print "You said: %s" % answer

answer = speech.input(phraselist=["Goodbye", "Hello"])
print "You said: %s" % answer