我是新手。我试图用 Python 创建一个简单的 Hello 程序来使用 pjsip 实现 SIP。我使用的代码是:
#
import sys
import pjsua as pj
#Logging callback
def log_cb(level, str, len):
print str,
# 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 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):
global lib
if self.call.info().media_state == pj.MediaState.ACTIVE:
# Connect the call to sound device
call_slot = self.call.info().conf_slot
lib.conf_connect(call_slot, 0)
lib.conf_connect(0, call_slot)
print "Hello world, I can talk!"
# Check command line argument
if len(sys.argv) != 2:
print "Usage: simplecall.py <dst-URI>"
sys.exit(1)
try:
# Create library instance
lib = pj.Lib()
# Init library with default config
lib.init(log_cfg = pj.LogConfig(level=3, callback=log_cb))
# Create UDP transport which listens to any available port
transport = lib.create_transport(pj.TransportType.UDP)
# Start the library
lib.start()
# Create local/user-less account
acc = lib.create_account_for_transport(transport)
# Make call
call = acc.make_call(sys.argv[1], MyCallCallback())
# Wait for ENTER before quitting
print "Press <ENTER> to quit"
input = sys.stdin.readline().rstrip("\r\n")
# We're done, shutdown the library
lib.destroy()
lib = None
except pj.Error, e:
print "Exception: " + str(e)
lib.destroy()
lib = None
sys.exit(1)
但是当我这样运行它时:
python simpleHello.py 192.168.15.66
它打印出:
11:25:46.555 os_core_unix.c !pjlib 2.2.1 for POSIX initialized
11:25:46.562 sip_endpoint.c .Creating endpoint instance...
11:25:46.564 pjlib .select() I/O Queue created (0x89ade80)
11:25:46.570 sip_endpoint.c .Module "mod-msg-print" registered
11:25:46.572 sip_transport. .Transport manager created.
11:25:46.572 pjsua_core.c .PJSUA state changed: NULL --> CREATED
11:25:46.627 pjsua_core.c .pjsua version 2.2.1 for Linux-3.11.0.15/i686/glibc-2.15 initialized
11:25:46.640 pjsua_aud.c ..Error retrieving default audio device parameters: Unable to find default audio device (PJMEDIA_EAUD_NODEFDEV) [status=420006]
Exception: Object: {Account <sip:10.0.2.15:51342>}, operation=make_call(), error=Unable to find default audio device (PJMEDIA_EAUD_NODEFDEV)
请提供任何帮助.. :(