[Alsa-user] alsa configuration file format documentation? does it exist?

[Robert La Ferla]

Can someone explain how the configuration file works or point me to a 
document that does?  I have looked on the web site and such but I could 
not find any documentation that explains the details of a configuration 
file.  I think if ALSA has a weak point, it's the fact that it is 
difficult to configure.  I hope that this situation will get better but 
in the interim, I need to decipher the format of the file.

What is the purpose of each entry in the file?  Does it refer to how a 
device is configured, a specific port, etc...? Do these entries map to 
entries in another file or are they independent?  What are the valid 
parameters for each?  What are the valid values?  i.e.  I'm looking for 
a document that describes the format of the configuration file and a few 
very simple examples.

e.g.

pcm.nforce-hw {
type hw
card 0
device 2
}
pcm.!default {
type plug
slave.pcm "nforce"
}
#0,0 is analog out (i.e. headphone socket on the shuttle), and 0,1 is
#spdif out.
pcm.nforce {
type dmix
ipc_key 1234
slave {
pcm "hw:0,2"
period_time 0
period_size 1024
buffer_size 32768
rate 48000
}


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