James Courtier-Dutton <[EMAIL PROTECTED]> writes:<snip>
The OP was recording.
Oops. My explanation only covers playback, not capture.
But if you use the snd_pcm_avail_update() just before you capture some samples from the buffer, then do a gettimeofday(), you will get an accurate measure of when the samples arrived in the buffer.
If you also use a thread and get it to do poll(), you could also keep the latency down, with it calling the routine on each period elapsed.
Summary: Use a method similar to the playback method, but just modify it a be for record.
Cheers James
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