/usr/share/pyshared/plwm/mixer.py is in python-plwm 2.6a+20080530-1.1.
This file is owned by root:root, with mode 0o644.
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# mw_mixer.py -- control and view volume
#
# Copyright (C) 2002 Peter Liljenberg <petli@ctrl-c.liu.se>
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import types
import re
from plwm import event, wmanager
MixerIOEventType = event.new_event_type()
MixerTimeoutEventType = event.new_event_type()
class ReximaInterface:
dev_re = re.compile('^([a-z0-9]+)\s+(\d+)(, (\d+))?', re.MULTILINE)
def get_cmd(self):
return 'rexima -v'
def set_cmd(self, dev, val1, val2):
if val2 is None:
return 'rexima %s %d' % (dev, val1)
else:
return 'rexima %s %d,%d' % (dev, val1, val2)
def parse_output(self, data):
groups = self.dev_re.findall(data)
devs = []
for dev, ls1, skip, ls2 in groups:
if not ls1:
continue
left = int(ls1)
if not ls2:
devs.append((dev, left))
else:
right = int(ls2)
devs.append((dev, (left, right)))
return devs
# wm mixin
class Mixer:
mixer_interface = ReximaInterface()
def __wm_init__(self):
self.dispatch.add_handler(MixerIOEventType, self.mixer_io_event)
self.dispatch.add_handler(MixerTimeoutEventType,
self.mixer_timout)
self.mixer_devs = {}
self.mixer_mute_devs = {}
self.mixer_status_msg = None
self.mixer_timer_event = None
self.mixer_cmd_out = None
self.mixer_update_settings()
def mixer_update_settings(self):
if self.mixer_cmd_out is not None:
wmanager.debug('mixer',
'previous update command has not finished yet')
return
pipes = self.system(self.mixer_interface.get_cmd(), redirect = 1)
self.mixer_cmd_out = pipes[1]
self.mixer_cmd_data = ''
self.mixer_cmd_event = event.FileEvent(MixerIOEventType,
self.mixer_cmd_out,
event.FileEvent.READ)
self.events.add_file(self.mixer_cmd_event)
def mixer_io_event(self, evt):
d = self.mixer_cmd_out.read()
if d:
self.mixer_cmd_data = self.mixer_cmd_data + d
return
# command finished, update values
self.mixer_cmd_event.cancel()
self.mixer_cmd_event = None
self.mixer_cmd_out.close()
self.mixer_cmd_out = None
devs = self.mixer_interface.parse_output(self.mixer_cmd_data)
for dev, val in devs:
self.mixer_devs[dev] = val
def mixer_timout(self, evt):
if self.mixer_status_msg is not None:
self.mixer_status_msg.pop()
self.mixer_status_msg = None
self.mixer_timer_event = None
def mixer_status_view(self, devs = None, stereo = 0, timeout = 5):
if devs is None:
devs = self.mixer_devs.keys()
msg = ''
for dev in devs:
try:
val = self.mixer_mute_devs[dev]
valstr = 'MUTE:%s' % val
except KeyError:
try:
values = self.mixer_devs[dev]
if type(values) is types.TupleType:
if stereo:
valstr = '%s:%s' % values
else:
valstr = str(values[0])
else:
valstr = str(values)
except KeyError:
valstr = 'N/A'
msg = '%s [%s %s]' % (msg, dev, valstr)
if self.mixer_status_msg is None:
self.mixer_status_msg = self.current_screen.modestatus_new(msg)
else:
self.mixer_status_msg.set(msg)
if self.mixer_timer_event is not None:
self.mixer_timer_event.cancel()
self.mixer_timer_event = event.TimerEvent(MixerTimeoutEventType,
after = timeout)
self.events.add_timer(self.mixer_timer_event)
def mixer_get(self, dev, stereo = 0):
try:
values = self.mixer_devs[dev]
if type(values) is types.TupleType:
return values[0]
else:
return values
except KeyError:
return None
def mixer_set(self, dev, val1, val2 = None):
try:
values = self.mixer_devs[dev]
except KeyError:
return
assert val1 >= 0 and val1 <= 100
assert val2 is None or (val2 >= 0 and val2 <= 100)
if type(values) is types.TupleType:
if val2 is None:
val2 = val1
self.mixer_devs[dev] = (val1, val2)
cmd = self.mixer_interface.set_cmd(dev, val1, val2)
else:
self.mixer_devs[dev] = val1
cmd = self.mixer_interface.set_cmd(dev, val1, None)
self.system(cmd, fg = 1)
try: del self.mixer_mute_devs[dev]
except KeyError: pass
def mixer_mute(self, dev):
"""Toggle muteness of DEV."""
if self.mixer_mute_devs.has_key(dev):
old = self.mixer_mute_devs[dev]
self.mixer_set(dev, old)
else:
old = self.mixer_get(dev)
self.mixer_set(dev, 0)
self.mixer_mute_devs[dev] = old
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