Lee Revell wrote:
Cannot work. Nothing you do to and ALSA config file has any effect on
apps that use the in-kernel OSS emulation as they are bypassing alsa-lib
completely.
The only option if you want to use all the advanced featured of ALSA is
not to use the in-kernel OSS emulation. It's a crutch for old broken
apps.
Unfortunately, an old, broken -- and proprietary -- app is what I'm
having to deal with. But I think I can live without /dev/dspX for my
purposes.
I cooked up a .asoundrc I hope some here will find useful:
----------------------------------------------------------------------
pcm.fileout {
type file
file /home/jcastro/myfile
slave.pcm null
}
pcm_slave.sl3 {
pcm "fileout"
format S16_LE
channels 1
rate 48000
}
pcm.complex_convert {
type plug
slave sl3
}
----------------------------------------------------------------------
If you play anything to "complex_convert", regardless of format, 48K
slin mono gets written at /home/jcastro/myfile. You can turn the
resulting file into something useful by prepending a .AU header as
described in http://astronomy.swin.edu.au/~pbourke/dataformats/au/
Now I want to do the opposite -- running a recording application and
have it get its "microphone" input from a file, no matter what
format+rate is requested. I tried to run "arecord -D complex_convert
myfile.wav" with the definitions above but it didn't work -- it would
block indefinitely. Suggestions?
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