DMRlink/ambe_audio.py
2015-11-26 19:25:23 -05:00

195 lines
7.6 KiB
Python
Executable File

#!/usr/bin/env python
#
# This work is licensed under the Creative Commons Attribution-ShareAlike
# 3.0 Unported License.To view a copy of this license, visit
# http://creativecommons.org/licenses/by-sa/3.0/ or send a letter to
# Creative Commons, 444 Castro Street, Suite 900, Mountain View,
# California, 94041, USA.
# This is a sample applicaiton that dumps all raw AMBE+2 voice frame data
# It is useful for things like, decoding the audio stream with a DVSI dongle, etc.
from __future__ import print_function
from twisted.internet import reactor
from binascii import b2a_hex as h
from bitstring import BitArray
import sys
import cPickle as pickle
from dmrlink import IPSC, NETWORK, networks, logger, int_id, hex_str_3, get_info, talkgroup_ids, subscriber_ids
import socket
import ConfigParser
__author__ = 'Cortney T. Buffington, N0MJS'
__copyright__ = 'Copyright (c) 2015 Cortney T. Buffington, N0MJS and the K0USY Group'
__credits__ = 'Adam Fast, KC0YLK; Robert Garcia, N5QM'
__license__ = 'Creative Commons Attribution-ShareAlike 3.0 Unported'
__maintainer__ = 'Cort Buffington, N0MJS'
__version__ = '0.1a'
__email__ = 'n0mjs@me.com'
__status__ = 'pre-alpha'
try:
from ipsc.ipsc_message_types import *
except ImportError:
sys.exit('IPSC message types file not found or invalid')
def ByteToHex( byteStr ):
return ''.join( [ "%02X " % ord(x) for x in byteStr ] ).strip()
_configFile='ambe_audio.cfg'
_debug = False
_outToFile = False
_outToUDP = True
#_gateway = "192.168.1.184"
_gateway = "127.0.0.1"
_gateway_port = 1234
_tg_filter = [2,3,13,3174,3777215,3100,9,9998,3112] #set this to the tg to monitor
_no_tg = -99
config = ConfigParser.ConfigParser()
try:
_tg_filter=[]
config.read(_configFile)
for sec in config.sections():
for key, val in config.items(sec):
print( '%s="%s"' % (key, val) )
_debug = config.get(sec, '_debug')
_outToFile = config.get(sec, '_outToFile')
_outToUDP = config.get(sec, '_outToUDP')
_gateway = config.get(sec, '_gateway')
_gateway_port = config.get(sec, '_gateway_port')
_tgs = config.get(sec, '_tg_filter')
_tg_filter = map(int, _tgs.split(','))
except:
sys.exit('Configuration file \''+_configFile+'\' is not a valid configuration file! Exiting...')
if _outToFile == True:
f = open('ambe.bin', 'wb')
if _outToUDP == True:
sock = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
class ambeIPSC(IPSC):
_currentTG = _no_tg
def __init__(self, *args, **kwargs):
IPSC.__init__(self, *args, **kwargs)
self.CALL_DATA = []
self._currentTG = _no_tg
print('DMRLink ambe server')
print('Send UDP frames to gateway {}:{}'.format(_gateway, _gateway_port))
#************************************************
# CALLBACK FUNCTIONS FOR USER PACKET TYPES
#************************************************
#
def group_voice(self, _network, _src_sub, _dst_sub, _ts, _end, _peerid, _data):
# THIS FUNCTION IS NOT COMPLETE!!!!
_payload_type = _data[30:31]
# _ambe_frames = _data[33:52]
_ambe_frames = BitArray('0x'+h(_data[33:52]))
_ambe_frame1 = _ambe_frames[0:49]
_ambe_frame2 = _ambe_frames[50:99]
_ambe_frame3 = _ambe_frames[100:149]
_tg_id = int_id(_dst_sub)
if _tg_id in _tg_filter: #All TGs
_dst_sub = get_info(int_id(_dst_sub), talkgroup_ids)
if _payload_type == BURST_DATA_TYPE['VOICE_HEAD']:
if self._currentTG == _no_tg:
if _ts: _ts = 2
else: _ts = 1
_src_sub = get_info(int_id(_src_sub), subscriber_ids)
print('Voice Transmission Start on TS {} and TG {} ({}) from {}'.format(_ts, _dst_sub, _tg_id, _src_sub))
self._currentTG = _tg_id
else:
if self._currentTG != _tg_id:
print('Transmission in progress, will not decode stream on TG {}'.format(_tg_id))
if _payload_type == BURST_DATA_TYPE['VOICE_TERM']:
if self._currentTG == _tg_id:
print('Voice Transmission End')
self._currentTG = _no_tg
if _payload_type == BURST_DATA_TYPE['SLOT1_VOICE']:
if self._currentTG == _tg_id:
if _debug == True:
print(_ambe_frames)
print('Frame 1:', ByteToHex(_ambe_frame1.tobytes()))
print('Frame 2:', ByteToHex(_ambe_frame2.tobytes()))
print('Frame 3:', ByteToHex(_ambe_frame3.tobytes()))
if _outToFile == True:
f.write( _ambe_frame1.tobytes() )
f.write( _ambe_frame2.tobytes() )
f.write( _ambe_frame3.tobytes() )
if _outToUDP == True:
sock.sendto(_ambe_frame1.tobytes(), (_gateway, _gateway_port))
sock.sendto(_ambe_frame2.tobytes(), (_gateway, _gateway_port))
sock.sendto(_ambe_frame3.tobytes(), (_gateway, _gateway_port))
if _payload_type == BURST_DATA_TYPE['SLOT2_VOICE']:
if self._currentTG == _tg_id:
if _debug == True:
print(_ambe_frames)
print('Frame 1:', ByteToHex(_ambe_frame1.tobytes()))
print('Frame 2:', ByteToHex(_ambe_frame2.tobytes()))
print('Frame 3:', ByteToHex(_ambe_frame3.tobytes()))
if _outToFile == True:
f.write( _ambe_frame1.tobytes() )
f.write( _ambe_frame2.tobytes() )
f.write( _ambe_frame3.tobytes() )
if _outToUDP == True:
sock.sendto(_ambe_frame1.tobytes(), (_gateway, _gateway_port))
sock.sendto(_ambe_frame2.tobytes(), (_gateway, _gateway_port))
sock.sendto(_ambe_frame3.tobytes(), (_gateway, _gateway_port))
else:
if _payload_type == BURST_DATA_TYPE['VOICE_HEAD']:
_dst_sub = get_info(int_id(_dst_sub), talkgroup_ids)
print('Ignored Voice Transmission Start on TS {} and TG {}'.format(_ts, _dst_sub))
import thread
# Define a function for the thread
def remote_control(port):
s = socket.socket() # Create a socket object
host = socket.gethostname() # Get local machine name
s.bind((host, port)) # Bind to the port
s.listen(5) # Now wait for client connection.
print('listening on port ', host, port)
while True:
c, addr = s.accept() # Establish connection with client.
print( 'Got connection from', addr )
tgs = c.recv(1024)
if tgs:
_tg_filter = map(int, tgs.split(','))
print( 'New TGs=', _tg_filter )
c.close() # Close the connection
try:
thread.start_new_thread( remote_control, (1235, ) )
except:
print( "Error: unable to start thread" )
if __name__ == '__main__':
logger.info('DMRlink \'ambe_audio.py\' (c) 2015 N0MJS & the K0USY Group - SYSTEM STARTING...')
for ipsc_network in NETWORK:
if NETWORK[ipsc_network]['LOCAL']['ENABLED']:
networks[ipsc_network] = ambeIPSC(ipsc_network)
reactor.listenUDP(NETWORK[ipsc_network]['LOCAL']['PORT'], networks[ipsc_network], interface=NETWORK[ipsc_network]['LOCAL']['IP'])
reactor.run()