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