Thanks, Jack and Ronald. Using currentRunLoop() or mainRunLoop()
makes it the run loop work.
I found that I also needed to call setListensInForegroundOnly_(False),
since a simple terminal app is never considered to be in the
foreground, and so would not otherwise be able to listen.
With that modification, it works great! For the archives, here's a
complete working demo of Mac speech recognition (below).
Incidentally, it seems that SR has taken a step backwards in Cocoa.
Carbon lets you specify a language model (i.e. grammar), which allows
for commands with parameters for example. The Cocoa approach is much
more limited, only allowing you to specify a set of simple fixed
commands. Even the docs admit this:
The NSSpeechSynthesizer and NSSpeechRecognizer classes provide the
Cocoa interface to the lower-level Carbon technologies of Speech
Synthesis and Speech Recognition, respectively. If you require
greater control of speech than permitted by the Cocoa classes, you
may use the underlying Carbon frameworks instead.
This is odd, since I thought Carbon was going away (not going to work
on 64-bit machines), and Cocoa was the officially blessed API now.
Makes me worry a bit about the whole SR functionality, which has
always been a bit of an unwanted stepchild. Time will tell, I guess.
But anyway, here's the code -- thanks to all for your help. (And if
you spot anything in the code that doesn't follow standard Python
idioms, please do correct me, as I'm eager to learn.)
Cheers,
- Joe
-----
#!/usr/bin/Python
#
# Stand-alone Cocoa speech recognition test.
#
from Foundation import *
import AppKit
import sys
class SRDelegate(NSObject):
def speechRecognizer_didRecognizeCommand_(self,sender,cmd):
print "speechRecognizer_didRecognizeCommand_", cmd
if cmd == u"Quit the test.": sys.exit()
recog = AppKit.NSSpeechRecognizer.alloc().init()
recog.setCommands_( [
u"Test the speech recognizer.",
u"What is the airspeed velocity of an unladen swallow?",
u"What is your quest?",
u"What is the capital of Assyria?",
u"Quit the test."])
recog.setListensInForegroundOnly_(False)
d = SRDelegate.alloc().init()
recog.setDelegate_(d)
print "Listening..."
recog.startListening()
# Now we need to enter the run loop...
runLoop = NSRunLoop.currentRunLoop()
runLoop.run()
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