def __init__(self, card_index, control, main_instance):
""" Constructor """
try:
self.main = main_instance
self.card_index = card_index
self.control = control
self.mixerlist = []
self.mixer = alsamixer.Mixer()
self.mixer.attach("hw:%d" % self.card_index)
self.mixer.load()
self.open()
self._has_capture()
self._check_version()
except Exception, err:
log.warn("can't open %s control for card %s, \
trying to select first available mixer channel\n" %
(self.control, self.get_card_name()))
try:
control = self.get_mixers(self.card_index)[0]
self.main.control = control
self.reopen(self.card_index, control)
self._has_capture()
self._check_version()
except Exception, err:
log.error("can't open first available control \
for card %s\nerror: %s" %
(self.get_card_name(), str(err)))
sys.exit(1)
def get_volume():
vol = None
switch = False
if nwg_panel.common.dependencies["pyalsa"]:
mixer = alsamixer.Mixer()
mixer.attach()
mixer.load()
element = alsamixer.Element(mixer, "Master")
max_vol = element.get_volume_range()[1]
vol = int(round(element.get_volume() * 100 / max_vol, 0))
switch = element.get_switch()
del mixer
else:
result = cmd2string(nwg_panel.common.commands["get_volume_alt"])
if result:
lines = result.splitlines()
for line in lines:
if "Front Left:" in line:
try:
vol = int(line.split()[4][1:-2])
except:
pass
switch = "on" in line.split()[5]
break
return vol, switch
def get_volume(alt_cmd):
vol = None
switch = False
if py_alsa:
mixer = alsamixer.Mixer()
mixer.attach()
mixer.load()
element = alsamixer.Element(mixer, "Master")
max_vol = element.get_volume_range()[1]
vol = int(round(element.get_volume() * 100 / max_vol, 0))
switch = element.get_switch()
del mixer
else:
result = cmd2string(alt_cmd)
if result:
lines = result.splitlines()
for line in lines:
if "Front Left:" in line:
try:
vol = int(line.split()[4][1:-2])
except:
pass
switch = "on" in line.split()[5]
break
return vol, switch
def __init__(self):
self.audiocfg = vc.get_audiocfg()
# Get the mixer
self.mixer = amixer.Mixer()
self.mixer.attach()
self.mixer.load()
self._get_mixer_elements()
self.mute_all()
def set_volume(percent, alt_cmd):
if py_alsa:
mixer = alsamixer.Mixer()
mixer.attach()
mixer.load()
element = alsamixer.Element(mixer, "Master")
max_vol = element.get_volume_range()[1]
element.set_volume_all(int(percent * max_vol / 100))
del mixer
else:
cmd = "{} {}% /dev/null 2>&1".format(alt_cmd, percent)
subprocess.call(cmd, shell=True)
def get_mixers(self, card_index=0):
""" Returns mixers list """
mixers = []
try:
mixer = alsamixer.Mixer()
mixer.attach("hw:%d" % card_index)
mixer.load()
for mix in mixer.list():
m = alsamixer.Element(mixer=mixer, name=mix[0], index=0)
if m.has_volume():
if mix[0] not in mixers:
mixers.append(mix[0])
except Exception, err:
log.exception(str(err))
def init_alsa(self):
self.mixer = alsamixer.Mixer()
self.mixer.attach()
self.mixer.load()
self.element = alsamixer.Element(self.mixer, VOL_CTRL)
self.element.set_callback(self.on_element_changed)
self.volume_range = self.element.get_volume_range()
# Setup mixer changes event handling
self.poller = select.poll()
self.mixer.register_poll(self.poller)
self.handle = True
gobject.timeout_add(POLL_TIMEOUT,
self.poll)
self.poller.poll()
def set_volume(slider):
percent = slider.get_value()
if nwg_panel.common.dependencies["pyalsa"]:
mixer = alsamixer.Mixer()
mixer.attach()
mixer.load()
element = alsamixer.Element(mixer, "Master")
max_vol = element.get_volume_range()[1]
element.set_volume_all(int(percent * max_vol / 100))
del mixer
else:
cmd = "{} {}% /dev/null 2>&1".format(
nwg_panel.common.commands["set_volume_alt"], percent)
subprocess.call(cmd, shell=True)
def init_mixers(self):
'''Initialize handling of ALSA mixer devices.'''
self._mixer = {}
if alsamixer is None:
self.log.warn('no ALSA mixer support')
return
self.log.debug('start init mixers')
for mixer_name, mixer in self.mixers.items():
m = alsamixer.Mixer()
try:
m.attach(mixer_name)
except RuntimeError:
raise MissingALSADevice(mixer_name)
m.load()
for element_name, element in mixer.items():
try:
e = alsamixer.Element(m, element_name)
except IOError:
raise MissingALSADevice('%s.%s' % (
mixer_name, element_name))
# create output device controls
for channel, control in element.get('output', {}).items():
tag = '%s.%s.%s.out' % (
mixer_name,
element_name,
channel)
self.init_mixer_device(tag, m, e, channel, control)
# create capture device controls
for channel, control in element.get('capture', {}).items():
tag = '%s.%s.%s.in' % (
mixer_name,
element_name,
channel)
self.init_mixer_device(tag, m, e, channel, control,
capture=True)
self.log.debug('done init mixers')
def set_volume(slider):
percent = slider.get_value()
if nwg_panel.common.dependencies["pyalsa"]:
mixer = alsamixer.Mixer()
mixer.attach()
mixer.load()
try:
element = alsamixer.Element(mixer,
nwg_panel.common.defaults["master"])
max_vol = element.get_volume_range()[1]
element.set_volume_all(int(percent * max_vol / 100))
except Exception as e:
eprint(e)
del mixer
else:
c = "amixer sset {}".format(nwg_panel.common.defaults["master"])
cmd = "{} {}% /dev/null 2>&1".format(c, percent)
try:
subprocess.call(cmd.split())
except Exception as e:
eprint(e)
def get_volume():
vol = 0
switch = False
if nwg_panel.common.dependencies["pyalsa"]:
mixer = alsamixer.Mixer()
mixer.attach()
mixer.load()
# https://github.com/nwg-piotr/nwg-panel/issues/24
try:
element = alsamixer.Element(mixer,
nwg_panel.common.defaults["master"])
max_vol = element.get_volume_range()[1]
vol = int(round(element.get_volume() * 100 / max_vol, 0))
switch = element.get_switch()
except:
try:
element = alsamixer.Element(mixer, mixer.list()[0][0])
# Overwrite user-defined name if caused error
print("'{}' didn't work, using {} instead".format(
nwg_panel.common.defaults["master"], element.name))
nwg_panel.common.defaults["master"] = element.name
max_vol = element.get_volume_range()[1]
vol = int(round(element.get_volume() * 100 / max_vol, 0))
switch = element.get_switch()
except:
return 0, False
del mixer
elif nwg_panel.common.dependencies["amixer"]:
# Same issue as above
result = cmd2string("amixer sget {}".format(
nwg_panel.common.defaults["master"]))
if not result:
try:
nwg_panel.common.defaults["master"] = get_scontrol()
result = cmd2string("amixer sget {}".format(
nwg_panel.common.defaults["master"]))
except:
result = None
if result:
lines = result.splitlines()
for line in lines:
if line.strip().startswith("Mono:"):
try:
vol = int(line.split()[3][1:-2])
try:
switch = "on" in line.split()[5]
except:
switch = "on" in line.split()[4]
break
except:
pass
if line.strip().startswith("Front Left:"):
try:
vol = int(line.split()[4][1:-2])
switch = "on" in line.split()[5]
break
except:
pass
return vol, switch
