Metathronius Galabant wrote: > At any given time x0, x1, ... xn I'd like to take some kind of > "snapshot" of both devices, ask them "how many frame do you have?". > This MUST NOT be restricted to the period, but it should be like > device1 has 80 frames, device2 only has 78 frames. Call snd_pcm_avail(). The granlarity of its return value is device specific; e.g., chips like Emu10k1 or DS-1 move data in blocks of 256 or 512 samples, and USB uses 1-ms frames. You are not guaranteed to get a result that is more recent than the last period boundary, although most devices can do better. Best regards, Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel