I'm trying to write and/or use a meter plugin like ameter with the rme
hammerfall dsp/rme 9652 so much without much success, presumably because
of the 24 bit/non-interleaved format this card seems to internally (?)
I noticed s16_enable( ) in alsa-lib/pcm_meter.c includes some support
for other slave pcm formats, would that (in theory) mean it should work
with the RME ?
snd_pcm_scope_s16_open( ) does seem to work (it doesnt fail) but
when running arecord
pcm_mmap.c:137: snd_pcm_mmap_read_areas:
Assertion `snd_pcm_mmap_capture_avail(pcm) >= size)`
snd_pcm_mmap_capture_avail returns 0 which shouldnt happen in
snd_pcm_mmap_read_areas() .. im trying to determine if this would be the
result of the format issue.
So far attempts at using a plug with a fixed format as slave for ameter
have failed.
pcm.short {
type plug;
slave {
pcm "hw:0,0"
format "S16_LE"
}
}
pcm.ameter {
type meter
# slave.pcm 'hw:0,0'
slave.pcm 'short'
frequency 10
scopes.0 ameter
}
Any ideas ?
Thanks,
Case
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