[alsa-devel] plughw vs default / per-application volume changer
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
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
participants (2)
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antony k -
Clemens Ladisch