forked from auracaster/pyalsaaudio
511deb2e16
r835 | casper | 2004-10-05 23:43:58 +0200 (Tue, 05 Oct 2004) | 1 line Added mixer example script. A few mixer fixes as well git-svn-id: svn://svn.code.sf.net/p/pyalsaaudio/code/trunk@6 ec2f30ec-7544-0410-870e-f70ca00c83f0
89 lines
2.5 KiB
Python
89 lines
2.5 KiB
Python
## mixertest.py
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##
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## This is an example of using the ALSA mixer API
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##
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## The script will set the volume or mute switch of the specified Mixer
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## depending on command line options.
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##
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## Examples:
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## python mixertest.py # list available mixers
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## python mixertest.py Master # show Master mixer settings
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## python mixertest.py Master 80 # set the master volume to 80%
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## python mixertest.py Master 1,90 # set channel 1 volume to 90%
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## python mixertest.py Master mute # mute the master mixer
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## python mixertest.py Master unmute # unmute the master mixer
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import alsaaudio
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import sys
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if len(sys.argv) == 1:
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# Demonstrates how to read the available mixers
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print "Available mixer controls:"
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for m in alsaaudio.mixers():
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print " '%s'" % m
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if len(sys.argv) == 2:
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# Demonstrates how mixer settings are queried.
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name = sys.argv[1]
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try:
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mixer = alsaaudio.Mixer(name)
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except alsaaudio.ALSAAudioError:
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print "No such mixer"
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sys.exit(1)
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print "Mixer name: '%s'"%mixer.mixer()
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print "Capabilities",mixer.volumecap()+mixer.switchcap()
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volumes = mixer.getvolume()
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for i in range(len(volumes)):
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print "Channel %i volume: %i%%"%(i,volumes[i])
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try:
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mutes = mixer.getmute()
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for i in range(len(mutes)):
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if mutes[i]: print "Channel %i is muted"%i
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except alsaaudio.ALSAAudioError:
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# May not support muting
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pass
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try:
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recs = mixer.getrec()
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for i in range(len(recs)):
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if recs[i]: print "Channel %i is recording"%i
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except alsaaudio.ALSAAudioError:
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# May not support recording
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pass
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if (len(sys.argv)) == 3:
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# Demonstrates how to set mixer settings
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name = sys.argv[1]
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try:
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mixer = alsaaudio.Mixer(name)
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except alsaaudio.ALSAAudioError:
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print "No such mixer"
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sys.exit(1)
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args = sys.argv[2]
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if args in ['mute','unmute']:
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# Mute/unmute the mixer
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if args == 'mute': mixer.setmute(1)
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else: mixer.setmute(0)
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sys.exit(0)
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if args in ['rec','unrec']:
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# Enable/disable recording
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if args == 'rec': mixer.setrec(1)
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else: mixer.setrec(0)
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sys.exit(0)
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if args.find(',')!=-1:
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channel,volume = map(int,args.split(','))
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else:
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channel = alsaaudio.MIXER_CHANNEL_ALL
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volume = int(args)
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# Set volume for specified channel. MIXER_CHANNEL_ALL means set
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# volume for all channels
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mixer.setvolume(volume,channel)
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