[Alsa-user] Any way to count samples written out to the ADC?

[Paul A. <pa...@gm...>]

Is there any way to divine a count of samples that leave the ALSA ring
buffer during playback? My application requires that I send a callback
when a buffer-full of data is actually played for it to do A/V sync
correctly. Right now I'm doing math  to figure out the right clock
time to issue the callback, using the latency value from
snd_pcm_delay(), but this is not working very well.

Thanks in advance.