# Created by Leo from: C:\Python22\Tom\Speech.leo

# << speachtest1 declarations >>
from win32com.client import constants
import win32com.client
import pythoncom
import sys

"""Sample code for using the Microsoft Speech SDK 5.1 via COM in Python.
	Requires that the SDK be installed; it's a free download from
			http://microsoft.com/speech
	and that MakePy has been used on it (in PythonWin,
	select Tools | COM MakePy Utility | Microsoft Speech Object Library 5.1).

	After running this, then saying "One", "Two", "Three" or "Four" should
	display "You said One" etc on the console. The recognition can be a bit
	shaky at first until you've trained it (via the Speech entry in the Windows
	Control Panel."""
# -- end -- << speachtest1 declarations >>
# << speachtest1 methods >> (1 of 2)
class SpeechRecognition:
	# << class SpeechRecognition declarations >>
	""" Initialize the speech recognition with the passed in list of words """
	# -- end -- << class SpeechRecognition declarations >>
	# << class SpeechRecognition methods >> (1 of 2)
	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",33, 0)#constants.SRATopLevel + constants.SRADynamic
		# 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 using speech synthesis
		self.say("Started successfully")
	# << class SpeechRecognition methods >> (2 of 2)
	"""Speak a word or phrase"""
	def say(self, phrase):
		self.speaker.Speak(phrase)
	# -- end -- << class SpeechRecognition methods >>
# << speachtest1 methods >> (2 of 2)
"""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")):
	# << class ContextEvents declarations >>
	"""Called when a word/phrase is successfully recognized  -
		ie it is found in a currently open grammar with a sufficiently high
		confidence"""
	# -- end -- << class ContextEvents declarations >>
	# << class ContextEvents methods >>
	def OnRecognition(self, StreamNumber, StreamPosition, RecognitionType, Result):
		newResult = win32com.client.Dispatch(Result)
		speaker = win32com.client.Dispatch("SAPI.SpVoice")
		shell = win32com.client.Dispatch("WScript.Shell")
		if newResult.PhraseInfo.GetText() == "computer":
			speaker.Speak('working')
		elif newResult.PhraseInfo.GetText() == "turn on tee vee":
			shell.SendKeys("^(%z)")
		elif newResult.PhraseInfo.GetText() == "channel thirty eight":
			shell.SendKeys("38")
		elif newResult.PhraseInfo.GetText() == "channel thirty six":
			shell.SendKeys("36")
		elif newResult.PhraseInfo.GetText() == "channel thirty four":
			shell.SendKeys("34")
		elif newResult.PhraseInfo.GetText() == "channel seven":
			shell.SendKeys("7")

		elif newResult.PhraseInfo.GetText() == "channel forty":
			shell.SendKeys("40")
		elif newResult.PhraseInfo.GetText() == "channel forty two":
			shell.SendKeys("42")
		elif newResult.PhraseInfo.GetText() == "channel sixteen":
			shell.SendKeys("16")
		elif newResult.PhraseInfo.GetText() == "channel forty four":
			shell.SendKeys("44")
		elif newResult.PhraseInfo.GetText() == "close program":
			shell.SendKeys("%( )c")
		elif newResult.PhraseInfo.GetText() == "check mail":
			pass


		print "You said: ",newResult.PhraseInfo.GetText()
	# -- end -- << class ContextEvents methods >>
# -- end -- << speachtest1 methods >>


if __name__=='__main__':
	wordsToAdd = ["computer" , "turn on tee vee", "channel forty", "channel forty two", "channel forty four", "channel sixteen", "close program", "check mail", "channel thirty eight", "channel thirty six", "channel thirty four", "channel seven"]
	speechReco = SpeechRecognition(wordsToAdd)
	while 1:
		pythoncom.PumpWaitingMessages()