* plughw vs default / per-application volume changer
@ 2012-08-06 11:41 antony k
2012-08-09 13:00 ` Clemens Ladisch
0 siblings, 1 reply; 2+ messages in thread
From: antony k @ 2012-08-06 11:41 UTC (permalink / raw)
To: alsa-devel
Hello,
I am new to ALSA and I cant figure out 2 things.
a) if and why should I prefer the "plughw:0,0" over the "default" device
name.
I am developing a simple audio player which is based on the latter.
I made this choice because when I was using plughw:0,0 with other audio
programs(flash player,vlc) open in the background I would get the "Device
is busy" error code.
With default, it's fine.
b) can I have an application specific volume changer? So far I have managed
to tweak the master volume of the "default" device which has a global
effect. Im guessing a) and b) are connected.
Thanks for your time
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: plughw vs default / per-application volume changer
2012-08-06 11:41 plughw vs default / per-application volume changer antony k
@ 2012-08-09 13:00 ` Clemens Ladisch
0 siblings, 0 replies; 2+ messages in thread
From: Clemens Ladisch @ 2012-08-09 13:00 UTC (permalink / raw)
To: antony k; +Cc: alsa-devel
antony k wrote:
> a) if and why should I prefer the "plughw:0,0" over the "default" device
> name.
> I am developing a simple audio player which is based on the latter.
> I made this choice because when I was using plughw:0,0 with other audio
> programs(flash player,vlc) open in the background I would get the "Device
> is busy" error code.
> With default, it's fine.
You have answered your question.
The default device name should be "default".
> b) can I have an application specific volume changer?
Very few sound devices support this in hardware.
Adjust the sound data in your program, or better use PulseAudio.
Regards,
Clemens
^ permalink raw reply [flat|nested] 2+ messages in thread
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2012-08-06 11:41 plughw vs default / per-application volume changer antony k
2012-08-09 13:00 ` Clemens Ladisch
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