Viewing file:  soundcardBackendHal.py (6.07 KB) -rwxr-xr-x
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
## soundcardBackendKudzu.py - Contains the backend code needed for system-config-soundcard
## Copyright (C) 2002, 2003 Red Hat, Inc.
## Copyright (C) 2002, 2003 Brent Fox <bfox@redhat.com>
## Copyright (C) 2004, 2005 Bastien Nocera <hadess@hadess.net>
## Based on code by Dan Williams <dcbw@redhat.com>
## 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 2 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, write to the Free Software
## Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
import string
import os
import sys
import dbus
##
## I18N
##
from rhpl.translate import _, N_
import rhpl.translate as translate
translate.textdomain ("system-config-soundcard")
HAL_DEVICE_IFACE = "org.freedesktop.Hal.Device"
ALLOWED_TYPE = "playback"
import soundcardBackendSoundCard
class soundcardBackendHal:
def __init__(self):
self.doDebug = True
self._dbusBus = dbus.SystemBus()
self.halManagerObj = self._dbusBus.get_object("org.freedesktop.Hal", "/org/freedesktop/Hal/Manager")
self.halManager = dbus.Interface(self.halManagerObj, "org.freedesktop.Hal.Manager")
self.driverList = self.read_driver_list()
self.cards = {}
def destroy(self, args):
return
# ------------------------------------------------------------------------
# Probe routines - drivers
# ------------------------------------------------------------------------
def read_driver_list(self):
try:
fd = open('/proc/asound/modules', 'r')
list = fd.readlines()
fd.close()
except:
return []
drivers = []
for line in list:
tmp = line.split()
drivers.append([int(tmp[0]), string.replace(tmp[1],'_','-')])
return drivers
def find_driver(self, list, position):
for rec in list:
if rec[0] == position:
return rec[1]
return _("Unknown")
# ------------------------------------------------------------------------
# Probe routines - HAL
# ------------------------------------------------------------------------
def getProperty(self, obj, prop):
if not obj.PropertyExists(prop, dbus_interface=HAL_DEVICE_IFACE):
return None
return obj.GetProperty(prop, dbus_interface=HAL_DEVICE_IFACE)
def getVendor(self, udi):
parentUdi = udi
while parentUdi and len(parentUdi):
obj = self._dbusBus.get_object("org.freedesktop.Hal", parentUdi)
vendor = self.getProperty(obj, "info.vendor")
if vendor != None:
return vendor, self.getProperty(obj, "info.product")
new_parentUdi = self.getProperty(obj, "info.parent")
if new_parentUdi == None:
break
parentUdi = new_parentUdi
def getBus(self, udi):
parentUdi = udi
while parentUdi and len(parentUdi):
obj = self._dbusBus.get_object("org.freedesktop.Hal", parentUdi)
bus = self.getProperty(obj, "info.bus")
if bus != None:
return bus
new_parentUdi = self.getProperty(obj, "info.parent")
if new_parentUdi == None:
break
parentUdi = new_parentUdi
def getDriver(self, udi):
parentUdi = udi
while parentUdi and len(parentUdi):
obj = self._dbusBus.get_object("org.freedesktop.Hal", parentUdi)
driver = self.getProperty(obj, "info.linux.driver")
if driver != None:
return driver
new_parentUdi = self.getProperty(obj, "info.parent")
if new_parentUdi == None:
break
parentUdi = new_parentUdi
def getDevices(self, udi):
# Search for other devices
#children = self.halManager.FindDeviceStringMatch("info.parent", udi)
#for childUdi in children:
# self.getChildDevices(childUdi)
# Add ourselves if we're an alsa device
obj = self._dbusBus.get_object("org.freedesktop.Hal", udi)
category = self.getProperty(obj, "info.category")
if category == "alsa" and self.getProperty(obj, "alsa.type") == ALLOWED_TYPE:
index = self.getProperty(obj, "alsa.card")
if index != None and not self.cards.has_key(index):
card = soundcardBackendSoundCard.soundCard(index)
card.active = True
card.maker, card.model = self.getVendor(udi)
card.type = string.split(card.maker)[0]
card.bus = self.getBus(udi)
card.driver = self.find_driver(self.driverList, card.index)
#card.driver = self.getDriver(udi)
card.device_list = card.loadCardDevices()
self.cards[index] = card
# TODO?
# Only add USB audio devices that have snd-usb-audio as the driver
#if card.bus() == "usb" and card.driver() != "snd-usb-audio":
# continue
# Same with Mac sound devices
#if card.bus() == "macio" and card.driver() != "snd-powermac":
def probeCards(self, default_card, default_device, card_list, card_max):
udiList = self.halManager.FindDeviceByCapability("alsa")
for udi in udiList:
self.getDevices(udi)
for index in self.cards:
if index < card_max :
card_list[index] = self.cards[index]
card_list[default_card].default_device = default_device
return card_list
|