Import from divmod; forgot to add mixtertest.py. Original log message:

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

mixertest.py

@@ -0,0 +1,88 @@
+## mixertest.py
+##
+## This is an example of using the ALSA mixer API
+##
+## The script will set the volume or mute switch of the specified Mixer
+## depending on command line options.
+##
+## Examples:
+## python mixertest.py               # list available mixers
+## python mixertest.py Master        # show Master mixer settings
+## python mixertest.py Master 80     # set the master volume to 80%
+## python mixertest.py Master 1,90   # set channel 1 volume to 90%
+## python mixertest.py Master mute   # mute the master mixer
+## python mixertest.py Master unmute # unmute the master mixer
+
+import alsaaudio
+import sys
+
+if len(sys.argv) == 1:
+    # Demonstrates how to read the available mixers
+    print "Available mixer controls:"
+    for m in alsaaudio.mixers():
+        print "  '%s'" % m
+
+if len(sys.argv) == 2:
+    # Demonstrates how mixer settings are queried.
+    name = sys.argv[1]
+    try:
+        mixer = alsaaudio.Mixer(name)
+    except alsaaudio.ALSAAudioError:
+        print "No such mixer"
+        sys.exit(1)
+
+    print "Mixer name: '%s'"%mixer.mixer()
+    print "Capabilities",mixer.volumecap()+mixer.switchcap()
+    volumes = mixer.getvolume()
+    for i in range(len(volumes)):
+        print "Channel %i volume: %i%%"%(i,volumes[i])
+        
+    try:
+        mutes = mixer.getmute()
+        for i in range(len(mutes)):
+            if mutes[i]: print "Channel %i is muted"%i
+    except alsaaudio.ALSAAudioError:
+        # May not support muting
+        pass
+
+    try:
+        recs = mixer.getrec()
+        for i in range(len(recs)):
+            if recs[i]: print "Channel %i is recording"%i
+    except alsaaudio.ALSAAudioError:
+        # May not support recording
+        pass
+
+if (len(sys.argv)) == 3:
+    # Demonstrates how to set mixer settings
+    name = sys.argv[1]
+    try:
+        mixer = alsaaudio.Mixer(name)
+    except alsaaudio.ALSAAudioError:
+        print "No such mixer"
+        sys.exit(1)
+
+    args = sys.argv[2]
+    if args in ['mute','unmute']:
+        # Mute/unmute the mixer
+        if args == 'mute': mixer.setmute(1)
+        else: mixer.setmute(0)
+        sys.exit(0)
+    if args in ['rec','unrec']:
+        # Enable/disable recording
+        if args == 'rec': mixer.setrec(1)
+        else: mixer.setrec(0)
+        sys.exit(0)
+        
+            
+    if args.find(',')!=-1:
+        channel,volume = map(int,args.split(','))
+    else:
+        channel = alsaaudio.MIXER_CHANNEL_ALL
+        volume = int(args)
+    # Set volume for specified channel. MIXER_CHANNEL_ALL means set
+    # volume for all channels
+    mixer.setvolume(volume,channel)
+
+
+