Re: [Alsa-user] how to detect activity or non activity on soundcard

2012-03-25 Thread Robert Bude
Thanks Torsten for your very good and exact answer i now use parallel to the preshutdownscript of mythtv your script in an light edited style if silence is detected your script kills vlc, mythtvfrontend and rhytmbox instances. Then my existing preshutdown script returns 0 so the mythbacke

Re: [Alsa-user] how to detect activity or non activity on soundcard

2012-03-23 Thread Torsten Schenk
Hello again, a simple bash script that you can run with start-stop-daemon --start --background --exec /path/to/file will do the job. Just adjust the value "timeout_sec" (time in seconds after function timeout() will be called), "freq_sec" (time in seconds of the pause between two checks) and "su

Re: [Alsa-user] how to detect activity or non activity on soundcard

2012-03-23 Thread Torsten Schenk
Hello Robert, take a look into the /proc/asound folder, there you find alsa status informations. For example if I do a 'cat' on my PC on the file /proc/asound/card0/pcm0p/sub0/hw_params it returns "closed" if no sound is running and information about samplerate and so on if sound is running. Gr