On Wed, 24 Oct 2012 20:55:35 +0200, Muffinman wrote: > Hello all, > > I'm new to Python (running 2.6.6 but if necessary 3.x should also be > fine). I have a little idea I hope to accomplish with Python. I want to > listen for changes in Alsa sound volume level and base some actions on > that. With the few lines below I can check the current volume level. Can > I extend this so that the script listens for changes in the volume level > and I can base some actions on it? As speed is quite important it's not > an option to poll every second or so for changes, it has to be close to > instantaneous.
Then poll every millisecond or so. I don't believe it is possible to listen for changes in an arbitrary variable. But if you check the alsaaudio module, or ask on a dedicated alsa mailing list, you may be able to find out how alsa records the volume in the first place. If it is written to a file, you can listen for changes to the file without polling on Linux systems. > If this is not possible with Python, any suggestions on what else are > also welcome of course. That's not a Python question, it's an Alsa question. Who knows how the sound volume is stored? -- Steven -- http://mail.python.org/mailman/listinfo/python-list
