Author: duncan
Date: Wed Mar 21 19:13:04 2007
New Revision: 9371
Added:
branches/rel-1/freevo/src/plugins/alsamixer.py (contents, props changed)
Log:
[ 1685326 ] Freevo alsa native mixer plugin
Plug-in from Stéphane Vaxelaire added
Added: branches/rel-1/freevo/src/plugins/alsamixer.py
==============================================================================
--- (empty file)
+++ branches/rel-1/freevo/src/plugins/alsamixer.py Wed Mar 21 19:13:04 2007
@@ -0,0 +1,296 @@
+# -*- coding: iso-8859-1 -*-
+# -----------------------------------------------------------------------
+# alsamixer.py - The ALSA mixer interface for freevo.
+# -----------------------------------------------------------------------
+# $Id$
+#
+# Notes:
+#
+# I propose this could replace 'mixer.py' when it's been tested adequately.
+#
+# And to activate:
+#
+# plugin.remove('mixer')
+# plugin.activate('alsamixer')
+#
+#
+# Todo:
+#
+# -----------------------------------------------------------------------
+# Freevo - A Home Theater PC framework
+# Copyright (C) 2002 Krister Lagerstrom, et al.
+# Please see the file freevo/Docs/CREDITS for a complete list of authors.
+#
+# 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 MER-
+# CHANTABILITY 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
+#
+# -----------------------------------------------------------------------
+
+
+__version__="0.2"
+__author__="Stephane Vaxelaire <[EMAIL PROTECTED]>"
+__doc__="""For manipulating the mixer. alsamixer.py plugin that works with
+the python-alsaaudio module (http://code.google.com/p/python-alsaaudio/).
+"""
+
+import struct
+import os
+
+import config
+import plugin
+import rc
+from event import *
+
+import alsaaudio
+
+
+class PluginInterface(plugin.DaemonPlugin):
+ """
+ Mixer for ALSA, requires pyalsaaudio module from
+ http://sourceforge.net/projects/pyalsaaudio/
+ """
+
+ def __init__(self):
+ self.main_mixer = None
+ self.pcm_mixer = None
+ self.line_mixer = None
+ self.mic_mixer = None
+ self.muted = 0
+
+ # If you're using ALSA or something and you don't set the mixer,
+ # why are we trying to open it?
+ try:
+ self.main_mixer = alsaaudio.Mixer(config.ALSA_MIXER_NAME, 0,
config.ALSA_CARDID)
+ except alsaaudio.ALSAAudioError:
+ print 'Couldn\'t open mixer "%s"' % config.ALSA_MIXER_NAME
+ return
+ try:
+ self.pcm_mixer = alsaaudio.Mixer(config.ALSA_PCMMIXER_NAME, 0,
config.ALSA_CARDID)
+ except alsaaudio.ALSAAudioError:
+ print 'Couldn\'t open mixer "%s"' % config.ALSA_PCMMIXER_NAME
+ return
+ try:
+ self.line_mixer = alsaaudio.Mixer(config.ALSA_LINEMIXER_NAME, 0,
config.ALSA_LINE_CARDID)
+ except alsaaudio.ALSAAudioError:
+ print 'Couldn\'t open mixer "%s"' % config.ALSA_LINEMIXER_NAME
+ return
+ try:
+ self.mic_mixer = alsaaudio.Mixer(config.ALSA_MICMIXER_NAME, 0,
config.ALSA_CARDID)
+ except alsaaudio.ALSAAudioError:
+ print 'Couldn\'t open mixer "%s"' % config.ALSA_MICMIXER_NAME
+ return
+
+ # init here
+ plugin.DaemonPlugin.__init__(self)
+ self.plugin_name = 'MIXER'
+
+ self.mainVolume = 0
+ self.pcmVolume = 0
+ self.lineinVolume = 0
+ self.micVolume = 0
+ self.igainVolume = 0
+ self.ogainVolume = 0
+
+ if config.MAJOR_AUDIO_CTRL == 'VOL':
+ self.setMainVolume(config.DEFAULT_VOLUME)
+ if config.CONTROL_ALL_AUDIO:
+ self.setPcmVolume(config.MAX_VOLUME)
+ self.setOgainVolume(config.MAX_VOLUME)
+ elif config.MAJOR_AUDIO_CTRL == 'PCM':
+ self.setPcmVolume(config.DEFAULT_VOLUME)
+ if config.CONTROL_ALL_AUDIO:
+ self.setMainVolume(config.MAX_VOLUME)
+ self.setOgainVolume(config.MAX_VOLUME)
+ else:
+ _debug_("No appropriate audio channel found for mixer")
+
+ if config.CONTROL_ALL_AUDIO:
+ self.setLineinVolume(0)
+ self.setMicVolume(0)
+
+
+ def config(self):
+ '''config is called automatically, for default settings run:
+ freevo plugins -i alsamixer
+ '''
+ return [
+ ('ALSA_CARDID', 'hw:0', 'Alsa Card id'),
+ ('ALSA_LINE_CARDID', 'hw:0', 'Alsa Line Card id'),
+ ('ALSA_MIXER_NAME', 'Master', 'Alsa Mixer Name'),
+ ('ALSA_PCMMIXER_NAME', 'PCM', 'Alsa PCM Mixer Name'),
+ ('ALSA_LINEMIXER_NAME', 'Line', 'Alsa Line Mixer Name'),
+ ('ALSA_MICMIXER_NAME', 'Mic', 'Alsa Mic Mixer Name'),
+ ]
+
+
+ def eventhandler(self, event=None, menuw=None, arg=None):
+ """
+ eventhandler to handle the VOL events
+ """
+ # Handle volume control
+ if event == MIXER_VOLUP:
+ if config.MAJOR_AUDIO_CTRL == 'VOL':
+ self.incMainVolume()
+ rc.post_event(Event(OSD_MESSAGE, arg=_('Volume: %s%%') %
self.getVolume()))
+ elif config.MAJOR_AUDIO_CTRL == 'PCM':
+ self.incPcmVolume()
+ rc.post_event(Event(OSD_MESSAGE, arg=_('Volume: %s%%') %
self.getVolume()))
+ return True
+
+ elif event == MIXER_VOLDOWN:
+ if config.MAJOR_AUDIO_CTRL == 'VOL':
+ self.decMainVolume()
+ rc.post_event(Event(OSD_MESSAGE, arg=_('Volume: %s%%') %
self.getVolume()))
+ elif config.MAJOR_AUDIO_CTRL == 'PCM':
+ self.decPcmVolume()
+ rc.post_event(Event(OSD_MESSAGE, arg=_('Volume: %s%%') %
self.getVolume()))
+ return True
+
+ elif event == MIXER_MUTE:
+ if self.getMuted() == 1:
+ rc.post_event(Event(OSD_MESSAGE, arg=_('Volume: %s%%') %
self.getVolume()))
+ self.setMuted(0)
+ else:
+ rc.post_event(Event(OSD_MESSAGE, arg=_('Mute')))
+ self.setMuted(1)
+ return True
+
+ return False
+
+
+ def _setVolume(self, device, volume):
+ if device:
+ if volume < 0:
+ volume = 0
+ if volume > 100:
+ volume = 100
+ if device==self.line_mixer:
+ device.setvolume(volume, 0)
+ else:
+ device.setvolume(volume)
+
+ def getMuted(self):
+ return(self.muted)
+
+ def setMuted(self, mute):
+ self.muted = mute
+ if config.MAJOR_AUDIO_CTRL == 'VOL':
+ if mute == 1:
+ self.main_mixer.setmute(1)
+ else:
+ self.main_mixer.setmute(0)
+ elif config.MAJOR_AUDIO_CTRL == 'PCM':
+ if mute == 1:
+ self.pcm_mixer.setmute(1)
+ else:
+ self.pcm_mixer.setmute(0)
+
+ def getVolume(self):
+ if config.MAJOR_AUDIO_CTRL == 'VOL':
+ return self.mainVolume
+ elif config.MAJOR_AUDIO_CTRL == 'PCM':
+ return self.pcmVolume
+
+ def getMainVolume(self):
+ return self.mainVolume
+
+ def setMainVolume(self, volume):
+ self.mainVolume = volume
+ self._setVolume(self.main_mixer, self.mainVolume)
+
+ def incMainVolume(self):
+ self.mainVolume += 5
+ if self.mainVolume > 100:
+ self.mainVolume = 100
+ self._setVolume(self.main_mixer, self.mainVolume)
+
+ def decMainVolume(self):
+ self.mainVolume -= 5
+ if self.mainVolume < 0:
+ self.mainVolume = 0
+ self._setVolume(self.main_mixer, self.mainVolume)
+
+ def getPcmVolume(self):
+ return self.pcmVolume
+
+ def setPcmVolume(self, volume):
+ self.pcmVolume = volume
+ self._setVolume(self.pcm_mixer, volume)
+
+ def incPcmVolume(self):
+ self.pcmVolume += 5
+ if self.pcmVolume > 100:
+ self.pcmVolume = 100
+ self._setVolume(self.pcm_mixer, self.pcmVolume)
+
+ def decPcmVolume(self):
+ self.pcmVolume -= 5
+ if self.pcmVolume < 0:
+ self.pcmVolume = 0
+ self._setVolume(self.pcm_mixer, self.pcmVolume)
+
+ def setLineinVolume(self, volume):
+ if config.CONTROL_ALL_AUDIO:
+ self.lineinVolume = volume
+ self._setVolume(self.line_mixer, volume)
+
+ def getLineinVolume(self):
+ return self.lineinVolume
+
+ def setMicVolume(self, volume):
+ if config.CONTROL_ALL_AUDIO:
+ self.micVolume = volume
+ self._setVolume(self.mic_mixer, volume)
+
+ def setIgainVolume(self, volume):
+ if config.CONTROL_ALL_AUDIO:
+ if volume > 100:
+ volume = 100
+ elif volume < 0:
+ volume = 0
+ #self._setVolume(ossaudiodev.SOUND_MIXER_IGAIN, volume)
+
+ def getIgainVolume(self):
+ return self.igainVolume
+
+ def decIgainVolume(self):
+ self.igainVolume -= 5
+ if self.igainVolume < 0:
+ self.igainVolume = 0
+ #self._setVolume(ossaudiodev.SOUND_MIXER_IGAIN, volume)
+
+ def incIgainVolume(self):
+ self.igainVolume += 5
+ if self.igainVolume > 100:
+ self.igainVolume = 100
+ #self._setVolume(ossaudiodev.SOUND_MIXER_IGAIN, volume)
+
+ def setOgainVolume(self, volume):
+ if volume > 100:
+ volume = 100
+ elif volume < 0:
+ volume = 0
+ self.ogainVolume = volume
+ #self._setVolume(ossaudiodev.SOUND_MIXER_IGAIN, volume)
+
+ def reset(self):
+ if config.CONTROL_ALL_AUDIO:
+ self.setLineinVolume(0)
+ self.setMicVolume(0)
+ if config.MAJOR_AUDIO_CTRL == 'VOL':
+ self.setPcmVolume(config.DEFAULT_VOLUME)
+ elif config.MAJOR_AUDIO_CTRL == 'PCM':
+ self.setMainVolume(config.DEFAULT_VOLUME)
+
+ self.setIgainVolume(0) # SB Live input from TV Card.
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