Testing for audio playback

[Andy Green]

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Somebody in the thread at some point said:
| Is that sort of thing in the alsa driver currently? That is relatively
| unknown territory for me. I have poked around /proc and /sys but found
| nothing of use.

I see decent looking stuff if I look at

# cat /proc/asound/neo1973gta02/pcm0p/sub0/status

idle -->

closed

catting /dev/urandom >/dev/dsp  --->

state: RUNNING
trigger_time: 1217825794.241945000
tstamp      : 1217825796.260579000
delay       : 30988
avail       : 1780
avail_max   : 30782
- -----
hw_ptr      : 16167
appl_ptr    : 48935

I guess those numbers change if you are doing something.

- -Andy
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