I mean, what is that thing that you're interfacing ALSA with? Obviously, it somehow generates samples, but how exactly?

Regards, Clemens

Bach, Andrea wrote:

Mmh - I get them from the buffer argument of the transfer callback of the PCM external plugin. I do not have a second source... maybe I missed the "main thing" so is there an example of a PCM external plugin I can look at?

Thank you Andrea

...

how can I wait inside the transfer callback until the next bytes are available...

That depends on where you get the bytes from.

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