Simple SIP DTMF-to-keypress program I hacked up on 33c3. It is for tetris, you know.

thegame.py

# $Id$
#
# SIP DTMF-to-keypress
#
# Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
#
import sys
import pjsua as pj
import subprocess

LOG_LEVEL=3

# Logging callback
def log_cb(level, str, len):
    print str,


# Callback to receive events from account
class MyAccountCallback(pj.AccountCallback):

    def __init__(self, account=None):
        pj.AccountCallback.__init__(self, account)

    # Notification on incoming call
    def on_incoming_call(self, call):
        print "Incoming call from ", call.info().remote_uri

        current_call = call

        call_cb = MyCallCallback(current_call)
        current_call.set_callback(call_cb)

        current_call.answer(200)

# Callback to receive events from Call
class MyCallCallback(pj.CallCallback):

    def __init__(self, call=None):
        pj.CallCallback.__init__(self, call)

    # Notification when call state has changed
    def on_state(self):
        print "Call with", self.call.info().remote_uri,
        print "is", self.call.info().state_text,
        print "last code =", self.call.info().last_code,
        print "(" + self.call.info().last_reason + ")"

    # Notification when call's media state has changed.
    def on_media_state(self):
        if self.call.info().media_state == pj.MediaState.ACTIVE:
            # Connect the call to sound device
            call_slot = self.call.info().conf_slot
            pj.Lib.instance().conf_connect(call_slot, 0)
            pj.Lib.instance().conf_connect(0, call_slot)
            print "Media is now active"
        else:
            print "Media is inactive"

    def on_dtmf_digit(self, digit):
        print digit
        try:
            keymap = {
                    '2': 'Up',
                    '8': 'Down',
                    '4': 'Left',
                    '6': 'Right',
                    }
            if digit in keymap:
                subprocess.call(['xdotool', 'key', keymap[digit]])
            else:
                print 'no key for', digit
        except Exception, e:
            print 'guwno', e


# Create library instance
lib = pj.Lib()

try:

    # Init library with default config and some customized
    # logging config.
    lib.init(log_cfg = pj.LogConfig(level=LOG_LEVEL, callback=log_cb))
    lib.create_transport(pj.TransportType.UDP, pj.TransportConfig(5060))
    # Start the library
    lib.start()

    acc_cfg = pj.AccountConfig("voip.eventphone.de", sys.argv[1], sys.argv[2])
    my_cb = MyAccountCallback()
    acc = lib.create_account(acc_cfg, cb=my_cb)

    # Menu loop
    while True:
        inp = sys.stdin.readline().rstrip("\r\n")

    # Shutdown the library
    transport = None
    acc.delete()
    acc = None
    lib.destroy()
    lib = None

except pj.Error, e:
    print "Exception: " + str(e)
    lib.destroy()
    lib = None