Re: Bridging captured stream to playback stream

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Posted to alsa-devel under the subject "OSS emulation, period size,
and start/stop thresholds", followed shortly thereafter by an actual
low-latency ALSA driver.  Audio-in to audio-out loopback delay
somewhere in the 18 ms range with no underrun/overrun.  The actual
application is retrofitted to the OSS emulation device for hysterical
reasons, but that is also working smoothly now.  Don't try the OSS
emulation approach on a non-NPTL platform, though; you pretty much
have to open /dev/dsp read-write, ioctl it into shape, and service RX
and TX from different threads.

Cheers,
- Michael

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