freeswitch/scripts/recipewizard.py

88 lines
2.7 KiB
Python

from freeswitch import *
from py_modules.speechtools import Grammar, SpeechDetect
from py_modules.speechtools import SpeechObtainer
import time, os
VOICE_ENGINE = "cepstral"
VOICE = "William"
GRAMMAR_ROOT = "/usr/src/freeswitch_trunk/scripts"
"""
Example speech recognition application in python.
How to make this work:
* Get mod_openmrcp working along with an MRCP asr server
* Add /usr/src/freeswitch/scripts or equivalent to your PYTHONPATH
* Restart freeswitch
* Create $GRAMMAR_ROOT/mainmenu.xml from contents in mainmenu() comments
"""
class RecipeWizard:
def __init__(self, session):
self.session=session
self.session.set_tts_parms(VOICE_ENGINE, VOICE)
self.main()
def main(self):
console_log("debug", "recipe wizard main()\n")
self.speechdetect = SpeechDetect(self.session, "openmrcp", "127.0.0.1");
self.speechobtainer = SpeechObtainer(speech_detect=self.speechdetect,
required_phrases=1,
wait_time=5000,
max_tries=3)
gfile = os.path.join(GRAMMAR_ROOT, "mainmenu.xml")
self.grammar = Grammar("mainmenu", gfile,"input",80,90)
self.speechobtainer.setGrammar(self.grammar);
console_log("debug", "calling speechobtainer.run()\n")
self.speechobtainer.detectSpeech()
self.session.speak("Hello. Welcome to the recipe wizard. Drinks or food?")
result = self.speechobtainer.run()
console_log("debug", "speechobtainer.run() result: %s\n" % result)
if result:
self.session.speak("Received result. Result is: %s" % result[0])
else:
self.session.speak("Sorry, I did not hear you")
console_log("debug", "speechobtainer.run() finished\n")
def mainmenu():
"""
<!DOCTYPE grammar PUBLIC "-//W3C//DTD GRAMMAR 1.0//EN"
"http://www.w3.org/TR/speech-grammar/grammar.dtd">
<grammar xmlns="http://www.w3.org/2001/06/grammar" xml:lang="en"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.w3.org/2001/06/grammar
http://www.w3.org/TR/speech-grammar/grammar.xsd"
version="1.0" mode="voice" root="root">
<rule id="root" scope="public">
<rule id="main">
<one-of>
<item weight="10">drinks</item>
<item weight="2">food</item>
</one-of>
</rule>
</rule>
</grammar>
"""
pass
def handler(uuid):
session = PySession(uuid)
session.answer()
rw = RecipeWizard(session)
session.hangup("1")