src/cadence-session-start

   1 #!/usr/bin/env python
   2 # -*- coding: utf-8 -*-
   3
   4 # This script is started pre-login
   5 # It allows to pre-start jack, a2j and pulseaudio
   6
   7 VERSION = "0.0.11"
   8
   9 # Imports (Global)
  10 import dbus, os, sys
  11 from PyQt4.QtCore import QCoreApplication, QProcess, QSettings
  12 from time import sleep
  13
  14 # Cadence Global Settings
  15 GlobalSettings = QSettings("Cadence", "GlobalSettings")
  16
  17 HOME = os.getenv("HOME")
  18
  19 DEFAULT_LADSPA_PATH = "/usr/lib/ladspa:/usr/local/lib/ladspa:/usr/lib32/ladspa:"+HOME+"/.ladspa"
  20 DEFAULT_DSSI_PATH = "/usr/lib/dssi:/usr/local/lib/dssi:/usr/lib32/dssi:"+HOME+"/.dssi"
  21 DEFAULT_LV2_PATH  = "/usr/lib/lv2:/usr/local/lib/lv2:"+HOME+"/.lv2"
  22 DEFAULT_VST_PATH  = "/usr/lib/vst:/usr/local/lib/vst:/usr/lib32/vst:"+HOME+"/.vst"
  23
  24 # DBus
  25 class DBus(object):
  26     __slots__ = [
  27       'bus',
  28       'a2j',
  29       'jack'
  30     ]
  31 DBus = DBus()
  32
  33 # Properly convert QString to str
  34 def QStringStr(string):
  35     return str(unicode(string).encode('utf-8'))
  36
  37 # Get Process list
  38 def getProcList():
  39     procs = []
  40
  41     process = QProcess()
  42     process.start("ps", ["-e"])
  43     process.waitForFinished()
  44
  45     procs_dump = QStringStr(process.readAllStandardOutput()).split("\n")
  46
  47     for i in range(len(procs_dump)):
  48       if (i == 0): continue
  49       proc_test = procs_dump[i].rsplit(":", 1)[-1].split(" ")
  50       if (len(proc_test) > 1):
  51         procs.append(proc_test[1])
  52
  53     return procs
  54
  55 # Start JACK, A2J and Pulse, according to user settings
  56 def startSession():
  57   process = QProcess()
  58
  59   # Kill all audio processes first
  60   procs_term = ["a2j", "a2jmidid", "artsd", "jackd", "jackdmp", "knotify4", "lash", "ladishd", "ladiappd", "ladiconfd", "jmcore"]
  61   procs_kill = ["jackdbus", "pulseaudio"]
  62   tries = 20
  63
  64   process.start("killall", procs_term)
  65   process.waitForFinished()
  66
  67   for x in range(tries):
  68     procs_list = getProcList()
  69     for i in range(len(procs_term)):
  70       if (procs_term[i] in procs_list):
  71         break
  72       else:
  73         sleep(0.1)
  74     else:
  75       break
  76
  77   process.start("killall", ["-KILL"] + procs_kill)
  78   process.waitForFinished()
  79
  80   for x in range(tries):
  81     procs_list = getProcList()
  82     for i in range(len(procs_kill)):
  83       if (procs_kill[i] in procs_list):
  84         break
  85       else:
  86         sleep(0.1)
  87     else:
  88       break
  89
  90   # Connect to DBus
  91   DBus.bus  = dbus.SessionBus()
  92
  93   DBus.jack = DBus.bus.get_object("org.jackaudio.service", "/org/jackaudio/Controller")
  94   try:
  95     DBus.a2j = dbus.Interface(DBus.bus.get_object("org.gna.home.a2jmidid", "/"), "org.gna.home.a2jmidid.control")
  96   except:
  97     DBus.a2j = None
  98
  99   # Load settings (JACK etc)
 100   if (GlobalSettings.value("JACK/AutoStart", True).toBool()):
 101     if (GlobalSettings.value("JACK/AutoLoadLadishStudio", False).toBool()):
 102       try:
 103         ladish_control = DBus.bus.get_object("org.ladish", "/org/ladish/Control")
 104       except:
 105         startJack()
 106         return False
 107
 108       try:
 109         ladish_conf = DBus.bus.get_object("org.ladish.conf", "/org/ladish/conf")
 110       except:
 111         ladish_conf = None
 112
 113       notify_hack = False
 114       studio_name = dbus.String(GlobalSettings.value("JACK/LadishStudioName", "").toString())
 115       studio_list_dump = ladish_control.GetStudioList()
 116
 117       for i in range(len(studio_list_dump)):
 118         this_studio_name = studio_list_dump[i][0]
 119         if (this_studio_name == studio_name):
 120           if (ladish_conf and ladish_conf.get('/org/ladish/daemon/notify')[0] == "true"):
 121             ladish_conf.set('/org/ladish/daemon/notify', "false")
 122             notify_hack = True
 123
 124           ladish_control.LoadStudio(this_studio_name)
 125           ladish_studio = DBus.bus.get_object("org.ladish", "/org/ladish/Studio")
 126           if (not bool(ladish_studio.IsStarted())):
 127             ladish_studio.Start()
 128
 129           if (notify_hack):
 130             ladish_conf.set('/org/ladish/daemon/notify', "true")
 131
 132           break
 133
 134       else:
 135         startJack()
 136
 137     else:
 138       startJack()
 139
 140   else:
 141     print "JACK is set to NOT auto-start on login"
 142     return True
 143
 144   if (bool(DBus.jack.IsStarted())):
 145     if (GlobalSettings.value("A2J/AutoStart", True).toBool() and DBus.a2j and not bool(DBus.a2j.is_started())):
 146       a2j_hw_export = GlobalSettings.value("A2J/ExportHW", True).toBool()
 147       DBus.a2j.set_hw_export(a2j_hw_export)
 148       DBus.a2j.start()
 149
 150     if (GlobalSettings.value("Pulse2JACK/AutoStart", True).toBool() and bool(DBus.jack.IsStarted())):
 151       if (GlobalSettings.value("Pulse2JACK/PlaybackModeOnly", False).toBool()):
 152         os.system("pulse2jack -p")
 153       else:
 154         os.system("pulse2jack")
 155
 156     print "JACK Started Successfully"
 157     return True
 158
 159   else:
 160     print "JACK Failed to Start"
 161     return False
 162
 163 def startJack():
 164   if (not bool(DBus.jack.IsStarted())):
 165     DBus.jack.StartServer()
 166
 167 def printLADSPA_PATH():
 168   EXTRA_LADSPA_DIRS = GlobalSettings.value("AudioPlugins/EXTRA_LADSPA_PATH", "").toString().split(":")
 169   LADSPA_PATH_str = DEFAULT_LADSPA_PATH
 170
 171   for i in range(len(EXTRA_LADSPA_DIRS)):
 172     if (EXTRA_LADSPA_DIRS[i]):
 173       LADSPA_PATH_str += ":"+EXTRA_LADSPA_DIRS[i]
 174
 175   print LADSPA_PATH_str
 176
 177 def printDSSI_PATH():
 178   EXTRA_DSSI_DIRS = GlobalSettings.value("AudioPlugins/EXTRA_DSSI_PATH", "").toString().split(":")
 179   DSSI_PATH_str = DEFAULT_DSSI_PATH
 180
 181   for i in range(len(EXTRA_DSSI_DIRS)):
 182     if (EXTRA_DSSI_DIRS[i]):
 183       DSSI_PATH_str += ":"+EXTRA_DSSI_DIRS[i]
 184
 185   print DSSI_PATH_str
 186
 187 def printLV2_PATH():
 188   EXTRA_LV2_DIRS = GlobalSettings.value("AudioPlugins/EXTRA_LV2_PATH", "").toString().split(":")
 189   LV2_PATH_str = DEFAULT_LV2_PATH
 190
 191   for i in range(len(EXTRA_LV2_DIRS)):
 192     if (EXTRA_LV2_DIRS[i]):
 193       LV2_PATH_str += ":"+EXTRA_LV2_DIRS[i]
 194
 195   print LV2_PATH_str
 196
 197 def printVST_PATH():
 198   EXTRA_VST_DIRS = GlobalSettings.value("AudioPlugins/EXTRA_VST_PATH", "").toString().split(":")
 199   VST_PATH_str = DEFAULT_VST_PATH
 200
 201   for i in range(len(EXTRA_VST_DIRS)):
 202     if (EXTRA_VST_DIRS[i]):
 203       VST_PATH_str += ":"+EXTRA_VST_DIRS[i]
 204
 205   print VST_PATH_str
 206
 207 def printArguments():
 208   print "\t-s|--start  \tStart session"
 209   print ""
 210   print "\t-h|--help   \tShow this help message"
 211   print "\t-v|--version\tShow version"
 212
 213 def printError(cmd):
 214   print "Invalid arguments"
 215   print "Run '%s -h' for help" % (cmd)
 216
 217 def printHelp(cmd):
 218   print "Usage: %s [cmd]" % (cmd)
 219   printArguments()
 220
 221 def printVersion():
 222   print "Cadence version %s" % (VERSION)
 223   print "Developed by falkTX and the rest of the KXStudio Team"
 224
 225 #--------------- main ------------------
 226 if __name__ == '__main__':
 227
 228     # App initialization
 229     app = QCoreApplication(sys.argv)
 230     app.setApplicationName("Cadence")
 231     app.setApplicationVersion(VERSION)
 232     app.setOrganizationName("falkTX")
 233
 234     # Check arguments
 235     cmd = sys.argv[0]
 236
 237     if (app.arguments().count() == 1):
 238       printHelp(cmd)
 239     elif (app.arguments().count() == 2):
 240       arg = app.arguments()[1]
 241       if (arg == "--printLADSPA_PATH"):
 242         printLADSPA_PATH()
 243       elif (arg == "--printDSSI_PATH"):
 244         printDSSI_PATH()
 245       elif (arg == "--printLV2_PATH"):
 246         printLV2_PATH()
 247       elif (arg == "--printVST_PATH"):
 248         printVST_PATH()
 249       elif (arg in ["-s", "--s", "-start", "--start"]):
 250         sys.exit(startSession())
 251       elif (arg in ["-h", "--h", "-help", "--help"]):
 252         printHelp(cmd)
 253       elif (arg in ["-v", "--v", "-version", "--version"]):
 254         printVersion()
 255       else:
 256         printError(cmd)
 257     else:
 258       printError(cmd)
 259
 260     # Exit
 261     sys.exit(0)
 262