Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.001 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'python.': 0.02; 'python,': 0.02; 'received:209.85.223': 0.03; 'calls.': 0.07; 'think,': 0.07; 'python': 0.09; 'subject:skip:a 10': 0.09; 'throw': 0.09; 'cc:addr :python-list': 0.10; '24,': 0.16; 'fine).': 0.16; 'oct': 0.16; 'poll': 0.16; 'popen,': 0.16; 'subject:variable': 0.16; 'sys.exit(1)': 0.16; 'wed,': 0.16; 'wrote:': 0.17; 'shell': 0.18; 'changes': 0.20; 'all,': 0.21; '3.x': 0.22; 'cc:2**0': 0.23; 'apps': 0.23; 'changes,': 0.23; 'cc:no real name:2**0': 0.24; 'idea': 0.24; 'second': 0.24; 'linux': 0.24; 'command': 0.24; 'script': 0.24; 'cc:addr:python.org': 0.25; 'header:In-Reply- To:1': 0.25; 'extend': 0.26; 'skip:# 10': 0.27; 'message- id:@mail.gmail.com': 0.27; 'lines': 0.28; 'url:mailman': 0.29; "i'm": 0.29; 'that.': 0.30; 'url:python': 0.32; 'etc.)': 0.32; 'url:listinfo': 0.32; 'certain': 0.33; 'docs': 0.33; 'received:google.com': 0.34; 'thanks': 0.34; 'pm,': 0.35; 'received:209.85': 0.35; 'except': 0.36; 'but': 0.36; 'url:org': 0.36; 'actions': 0.36; 'level.': 0.36; 'should': 0.36; 'subject: (': 0.36; 'possible': 0.37; 'option': 0.37; 'level': 0.37; 'quite': 0.37; 'received:209': 0.37; 'subject:: ': 0.38; 'some': 0.38; 'little': 0.39; 'header:Received:5': 0.40; 'url:mail': 0.40; 'your': 0.60; "you've": 0.61; 'first': 0.61; 'course.': 0.62; 'close': 0.63; 'sound': 0.65; 'subject:,': 0.81; 'listens': 0.84; 'windowing': 0.84; '(running': 0.91; 'maarten': 0.91 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=7WUDC8w7xblq7SGcjqyCEdmfWWx3/bMgLneLQ+LylcU=; b=x26KdCcxjRQu7BWfDwm520vDqClsGPUYFSLclR80pMRFA6oFcNXyTUBcaS5atW8RNp /o/7FX5qGpdy6Ns0eyvbGC6hUaQu/mTBGhD/BoAS5ufdVUzDp/9AVTak8lMGYeNYucrB yyPk278AZQKEem9DLc+QIq4hCCUGu8+JzmUC1d/bYboW4AJ6Zkc31/Lph3I3VnEBVxwl Uk1elAGUqbBKBlq8DAqdLpwRq6g0QCPOF5a0qLB1pSJnJwDYagea681Asd7h32qhgK8J d5ikbKWoOJi/fPBM9w5Lr33Av9n/ThpJBwRqgmvUmTYhY6uP2nlFFC6m8USvYOwoeTvW dDUw== MIME-Version: 1.0 In-Reply-To: <508839a7$0$785$58c7af7e@news.kabelfoon.nl> References: <508839a7$0$785$58c7af7e@news.kabelfoon.nl> Date: Wed, 24 Oct 2012 21:35:37 -0400 Subject: Re: Listen for changes in variable (alsaaudio.Mixer(x, x).getvolume(x) From: David Hutto To: Muffinman Content-Type: text/plain; charset=ISO-8859-1 Cc: python-list@python.org X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 49 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1351128940 news.xs4all.nl 6902 [2001:888:2000:d::a6]:52820 X-Complaints-To: abuse@xs4all.nl Path: csiph.com!usenet.pasdenom.info!news.stben.net!border3.nntp.ams.giganews.com!border1.nntp.ams.giganews.com!nntp.giganews.com!xlned.com!feeder1.xlned.com!newsfeed.xs4all.nl!newsfeed6.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail Xref: csiph.com comp.lang.python:32084 On Wed, Oct 24, 2012 at 2:55 PM, 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. > > If this is not possible with Python, any suggestions on what else are > also welcome of course. > > Thanks in advance, Maarten > > > ############# > try > mixer = alsaaudio.Mixer(Fake, 0) > except alsaaudio.ALSAAudioError: > sys.stderr.write("No such mixer\n") > sys.exit(1) > > volumes = mixer.getvolume(1) > ############# > -- > http://mail.python.org/mailman/listinfo/python-list first look at the docs for command line functions that utilize the command line for access to certain CL apps. Once you've found a way to access the CL apps with python(I use subprocess.call usually, I think, but there's popen, etc.) then use man alsamixer, or man aplayer, or man arecorder. in the shell on your linux distro. Then throw in a little tkinter, or a windowing system of your choice, and distort the changes with command line calls. -- Best Regards, David Hutto CEO: http://www.hitwebdevelopment.com