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redo rdfdb style to avoid whole-page scroll Ignore-this: 7df33921ba81a2c18cb97bf8a04e2cdb
author Drew Perttula <drewp@bigasterisk.com>
date Mon, 30 May 2016 22:33:38 +0000
parents d5e99fee786d
children a5a44077c54c
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a301a0039c66 buildout and rdflib updates
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1 #!bin/python
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2 """
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3
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4 this is the only process to talk to the dmx hardware. other clients
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5 can connect to this server and present dmx output, and this server
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6 will max ('pile-on') all the client requests.
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7
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8 this server has a level display which is the final set of values that
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9 goes to the hardware.
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10
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11 clients shall connect to the xmlrpc server and send:
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12
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13 their PID (or some other cookie)
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14
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15 a length-n list of 0..1 levels which will represent the channel
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16 values for the n first dmx channels.
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17
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18 server is port 8030; xmlrpc method is called outputlevels(pid,levellist).
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19
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20 todo:
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21 save dmx on quit and restore on restart
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22 if parport fails, run in dummy mode (and make an option for that too)
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23 """
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24
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25 from __future__ import division
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26 from twisted.internet import reactor
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27 from twisted.web import xmlrpc, server
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28 import sys,time,os
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29 from optparse import OptionParser
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30 import run_local
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31 import txosc.dispatch, txosc.async
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32 from light9.io import ParportDMX, UsbDMX
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33
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34 from light9.updatefreq import Updatefreq
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35 from light9 import networking
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36
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37 from txzmq import ZmqEndpoint, ZmqFactory, ZmqPullConnection, ZmqRequestTimeoutError
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38 import json
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39
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40 def startZmq(port, outputlevels):
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41 zf = ZmqFactory()
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42 e = ZmqEndpoint('bind', 'tcp://*:%s' % port)
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43 s = ZmqPullConnection(zf, e)
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44 def onPull(message):
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45 msg = json.loads(message[0])
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46 outputlevels(msg['clientid'], msg['levellist'])
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47 s.onPull = onPull
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48
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49 class ReceiverApplication(object):
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50 """
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51 receive UDP OSC messages. address is /dmx/1 for dmx channel 1,
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52 arguments are 0-1 floats for that channel and any number of
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53 following channels.
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54 """
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55 def __init__(self, port, lightServer):
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56 self.port = port
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57 self.lightServer = lightServer
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58 self.receiver = txosc.dispatch.Receiver()
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59 self.receiver.addCallback("/dmx/*", self.pixel_handler)
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60 self._server_port = reactor.listenUDP(
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61 self.port,
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62 txosc.async.DatagramServerProtocol(self.receiver),
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63 interface='0.0.0.0')
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64 print "Listening OSC on udp port %s" % (self.port)
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65
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66 def pixel_handler(self, message, address):
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67 # this is already 1-based though I don't know why
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68 startChannel = int(message.address.split('/')[2])
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69 levels = [a.value for a in message.arguments]
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70 allLevels = [0] * (startChannel - 1) + levels
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71 self.lightServer.xmlrpc_outputlevels("osc@%s" % startChannel,
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72 allLevels)
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73
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74 class XMLRPCServe(xmlrpc.XMLRPC):
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75 def __init__(self,options):
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76
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77 xmlrpc.XMLRPC.__init__(self)
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78
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79 self.clientlevels={} # clientID : list of levels
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80 self.lastseen={} # clientID : time last seen
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81 self.clientfreq={} # clientID : updatefreq
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82
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83 self.combinedlevels=[] # list of levels, after max'ing the clients
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84 self.clientschanged=1 # have clients sent anything since the last send?
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85 self.options=options
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86 self.lastupdate=0 # time of last dmx send
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87 self.laststatsprint=0 # time
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88
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89 # desired seconds between sendlevels() calls
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90 self.calldelay=1/options.updates_per_sec
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91
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92 print "starting parport connection"
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93 self.parportdmx = UsbDMX(dimmers=90, port=options.dmx_device)
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94 if os.environ.get('DMXDUMMY',0):
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95 self.parportdmx.godummy()
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96 else:
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97 self.parportdmx.golive()
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98
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99
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100 self.updatefreq=Updatefreq() # freq of actual dmx sends
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101 self.num_unshown_updates=None
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102 self.lastshownlevels=None
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103 # start the loop
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104 self.sendlevels()
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105
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106 # the other loop
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107 self.purgeclients()
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108
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109 def purgeclients(self):
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110
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111 """forget about any clients who haven't sent levels in a while.
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112 this runs in a loop"""
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113
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114 purge_age=10 # seconds
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115
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116 reactor.callLater(1,self.purgeclients)
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117
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118 now=time.time()
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119 cids = self.lastseen.keys()
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120 for cid in cids:
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121 lastseen=self.lastseen[cid]
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122 if lastseen < now - purge_age:
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123 print ("forgetting client %s (no activity for %s sec)" %
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124 (cid,purge_age))
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125 try:
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126 del self.clientlevels[cid]
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127 except KeyError:
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128 pass
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129 del self.clientfreq[cid]
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130 del self.lastseen[cid]
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131
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132 def sendlevels(self):
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133
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134 """sends to dmx if levels have changed, or if we havent sent
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135 in a while"""
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136
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137 reactor.callLater(self.calldelay,self.sendlevels)
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138
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139 if self.clientschanged:
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140 # recalc levels
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141
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142 self.calclevels()
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143
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144 if (self.num_unshown_updates is None or # first time
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145 self.options.fast_updates or # show always
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146 (self.combinedlevels!=self.lastshownlevels and # changed
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147 self.num_unshown_updates>5)): # not too frequent
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148 self.num_unshown_updates=0
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149 self.printlevels()
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150 self.lastshownlevels=self.combinedlevels[:]
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151 else:
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152 self.num_unshown_updates+=1
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153
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154 if time.time()>self.laststatsprint+2:
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155 self.laststatsprint=time.time()
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156 self.printstats()
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157
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158 # used to be a fixed 1 in here, for the max delay between
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159 # calls, instead of calldelay
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160 if self.clientschanged or time.time() > self.lastupdate + self.calldelay:
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161 self.lastupdate=time.time()
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162 self.sendlevels_dmx()
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163
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164 self.clientschanged=0 # clear the flag
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165
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166 def calclevels(self):
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167 """combine all the known client levels into self.combinedlevels"""
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168 self.combinedlevels=[]
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169 for chan in range(0,self.parportdmx.dimmers):
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170 x=0
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171 for clientlist in self.clientlevels.values():
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172 if len(clientlist)>chan:
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173 # clamp client levels to 0..1
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174 cl=max(0,min(1,clientlist[chan]))
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175 x=max(x,cl)
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176 self.combinedlevels.append(x)
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177
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178 def printlevels(self):
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179 """write all the levels to stdout"""
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180 print "Levels:","".join(["% 2d "%(x*100) for
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181 x in self.combinedlevels])
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182
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183 def printstats(self):
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184 """print the clock, freq, etc, with a \r at the end"""
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185
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186 sys.stdout.write("dmxserver up at %s, [polls %s] "%
118
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187 (time.strftime("%H:%M:%S"),
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188 str(self.updatefreq),
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189 ))
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190 for cid,freq in self.clientfreq.items():
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191 sys.stdout.write("[%s %s] " % (cid,str(freq)))
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192 sys.stdout.write("\r")
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193 sys.stdout.flush()
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194
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195 def sendlevels_dmx(self):
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196 """output self.combinedlevels to dmx, and keep the updates/sec stats"""
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197 # they'll get divided by 100
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198 if self.parportdmx:
118
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199 self.parportdmx.sendlevels([l*100 for l in self.combinedlevels])
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200 self.updatefreq.update()
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201
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202 def xmlrpc_echo(self,x):
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203 return x
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204
118
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205 def xmlrpc_outputlevels(self,cid,levellist):
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206 """send a unique id for your client (name+pid maybe), then
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207 the variable-length dmx levellist (scaled 0..1)"""
194
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208 if levellist!=self.clientlevels.get(cid,None):
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209 self.clientlevels[cid]=levellist
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210 self.clientschanged=1
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211 self.trackClientFreq(cid)
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212 return "ok"
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213
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214 def xmlrpc_currentlevels(self, cid):
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215 """get a list of levels we're currently sending out. All
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216 channels beyond the list you get back, they're at zero."""
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217 # if this is still too slow, it might help to return a single
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218 # pickled string
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219 self.trackClientFreq(cid)
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220 trunc = self.combinedlevels[:]
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221 i = len(trunc) - 1
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222 if i < 0:
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223 return []
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224 while trunc[i] == 0 and i >= 0:
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225 i -= 1
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226 if i < 0:
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227 return []
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228 trunc = trunc[:i+1]
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229 return trunc
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230
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231 def trackClientFreq(self, cid):
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232 if cid not in self.lastseen:
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233 print "hello new client %s" % cid
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234 self.clientfreq[cid]=Updatefreq()
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235 self.lastseen[cid]=time.time()
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236 self.clientfreq[cid].update()
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237
352
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238
118
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239 parser=OptionParser()
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240 parser.add_option("-f","--fast-updates",action='store_true',
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241 help=('display all dmx output to stdout instead '
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242 'of the usual reduced output'))
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243 parser.add_option("-r","--updates-per-sec",type='float',default=20,
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244 help=('dmx output frequency'))
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245 parser.add_option("-d","--dmx-device", default='/dev/dmx0',
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246 help='dmx device name')
419
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247 parser.add_option("-n", "--dummy", action="store_true",
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248 help="dummy mode, same as DMXDUMMY=1 env variable")
118
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249 (options,songfiles)=parser.parse_args()
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250
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251 print options
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252
419
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253 if options.dummy:
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254 os.environ['DMXDUMMY'] = "1"
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255
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256
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257 port = networking.dmxServer.port
210
f41004d5a507 factored out some networking, new show/ layout, curvecalc works
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258 print "starting xmlrpc server on port %s" % port
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259 xmlrpcServe = XMLRPCServe(options)
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260 reactor.listenTCP(port,server.Site(xmlrpcServe))
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261
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262 startZmq(networking.dmxServerZmq.port, xmlrpcServe.xmlrpc_outputlevels)
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263
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264 oscApp = ReceiverApplication(9051, xmlrpcServe)
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265
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266 reactor.run()
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267