/usr/lib/python2.7/dist-packages/laditools/jack.py is in python-laditools 1.1.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# LADITools - Linux Audio Desktop Integration Tools
# Copyright (C) 2011-2012 Alessio Treglia <quadrispro@ubuntu.com>
# Copyright (C) 2007-2010, Marc-Olivier Barre <marco@marcochapeau.org>
# Copyright (C) 2007-2009, Nedko Arnaudov <nedko@arnaudov.name>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys
import dbus
from .controller import LadiController
name_base = 'org.jackaudio'
ctrl_iface_name = name_base + '.JackControl'
conf_iface_name = name_base + '.Configure'
service_name = name_base + '.service'
obj_path = '/org/jackaudio/Controller'
def _dbus_type_to_python_type (dbus_value):
if type (dbus_value) == dbus.Boolean:
return bool(dbus_value)
if type (dbus_value) == dbus.Int32 or type (dbus_value) == dbus.UInt32:
return int(dbus_value)
if type (dbus_value) == dbus.String:
return str(dbus_value)
if type (dbus_value) == dbus.Byte:
return str (dbus_value)
return dbus_value
class JackController(LadiController):
"""Wrapper for controlling and monitoring JACK.
This class provides an (almost) complete control on configured JACK servers.
"""
def __init__ (self):
LadiController.__init__(self,
dbus_type='SessionBus',
service_name=service_name,
obj_path=obj_path,
iface_name=ctrl_iface_name)
def is_started (self):
return self.controller_iface.IsStarted ()
def name_owner_changed (name = None, old_owner = None, new_owner = None):
sys.stderr.write("Name changed : %r\n" % name)
sys.stderr.flush()
def is_realtime (self):
return self.controller_iface.IsRealtime ()
def get_load (self):
return self.controller_iface.GetLoad ()
def get_xruns (self):
return self.controller_iface.GetXruns ()
def get_sample_rate (self):
return self.controller_iface.GetSampleRate ()
def get_latency (self):
return self.controller_iface.GetLatency ()
def reset_xruns (self):
return self.controller_iface.ResetXruns ()
def start (self):
self.controller_iface.StartServer ()
def stop (self):
self.controller_iface.StopServer ()
def kill (self):
self.controller_iface.Exit ()
class JackConfigParameter(object):
"""Wrapper for JACK's parameters.
This class provides an (almost) complete control to JACK's configuration parameters.
"""
def __init__(self, jack, path):
self._jack = jack
self.path = path
self.name = path[-1:]
def get_name(self):
return self.name
def get_type(self):
return self._jack.get_param_type(self.path)
def get_value(self):
return self._jack.get_param_value(self.path)
def set_value(self, value):
self._jack.set_param_value(self.path, value)
def reset_value(self):
self._jack.reset_param_value(self.path)
def get_short_description(self):
return self._jack.get_param_short_description(self.path)
def get_long_description(self):
descr = self._jack.get_param_long_description(self.path)
if not descr:
descr = self.get_short_description()
return descr
def has_range(self):
return self._jack.param_has_range(self.path)
def get_range(self):
return self._jack.param_get_range(self.path)
def has_enum(self):
return self._jack.param_has_enum(self.path)
def is_strict_enum(self):
return self._jack.param_is_strict_enum(self.path)
def is_fake_values_enum(self):
return self._jack.param_is_fake_value(self.path)
def get_enum_values(self):
return self._jack.param_get_enum_values(self.path)
class JackConfigProxy(LadiController):
"""Wrapper for JACK's configuration.
This controller provides access to the JACK's whole configuration.
"""
def __init__ (self):
LadiController.__init__(self,
dbus_type='SessionBus',
service_name=service_name,
obj_path=obj_path,
iface_name=conf_iface_name)
def name_owner_changed (name = None, old_owner = None, new_owner = None):
print "Name changed : %r" % name
def get_selected_driver (self):
isset, default, value = self.controller_iface.GetParameterValue (['engine', 'driver'])
return value
def read_container (self, path):
is_leaf, children = self.controller_iface.ReadContainer (path)
if is_leaf:
return []
return children
def get_param_names (self, path):
is_leaf, children = self.controller_iface.ReadContainer (path)
if not is_leaf:
return []
return children
def get_param_short_description (self, path):
type_char, name, short_descr, long_descr = self.controller_iface.GetParameterInfo (path)
return short_descr
def get_param_long_description (self, path):
type_char, name, short_descr, long_descr = self.controller_iface.GetParameterInfo (path)
return long_descr
def get_param_type (self, path):
type_char, name, short_descr, long_descr = self.controller_iface.GetParameterInfo (path)
return str (type_char)
def get_param_value (self, path):
isset, default, value = self.controller_iface.GetParameterValue (path)
isset = bool (isset)
default = _dbus_type_to_python_type (default)
value = _dbus_type_to_python_type (value)
return isset, default, value
def set_param_value (self, path, value):
typestr = self.get_param_type (path)
if typestr == "b":
value = dbus.Boolean (value)
elif typestr == "y":
value = dbus.Byte (value)
elif typestr == "i":
value = dbus.Int32 (value)
elif typestr == "u":
value = dbus.UInt32 (value)
self.controller_iface.SetParameterValue (path, value)
def reset_param_value (self, path):
self.controller_iface.ResetParameterValue (path)
def param_has_range (self, path):
is_range, is_strict, is_fake_value, values = self.controller_iface.GetParameterConstraint (path)
return bool (is_range)
def param_get_range (self, path):
is_range, is_strict, is_fake_value, values = self.controller_iface.GetParameterConstraint (path)
if not is_range or len (values) != 2:
return -1, -1
return _dbus_type_to_python_type (values[0][0]), _dbus_type_to_python_type (values[1][0])
def param_has_enum (self, path):
is_range, is_strict, is_fake_value, values = self.controller_iface.GetParameterConstraint (path)
return not is_range and len (values) != 0
def param_is_strict_enum (self, path):
is_range, is_strict, is_fake_value, values = self.controller_iface.GetParameterConstraint (path)
return is_strict
def param_is_fake_value (self, path):
is_range, is_strict, is_fake_value, values = self.controller_iface.GetParameterConstraint (path)
return is_fake_value
def param_get_enum_values (self, path):
is_range, is_strict, is_fake_value, dbus_values = self.controller_iface.GetParameterConstraint (path)
values = []
if not is_range and len (dbus_values) != 0:
for dbus_value in dbus_values:
values.append ([_dbus_type_to_python_type (dbus_value[0]), _dbus_type_to_python_type (dbus_value[1])])
return values
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