[alsa-devel] Relation between SND_PCM_IOPLUG_HW_PERIODS and SND_PCM_IOPLUG_HW_BUFFER_BYTES ?

Hi,

what is the relation between SND_PCM_IOPLUG_HW_PERIODS and SND_PCM_IOPLUG_HW_BUFFER_BYTES ?

While SND_PCM_IOPLUG_HW_BUFFER_BYTES is the setting of the hardware buffer size, I'm not sure exactly what SND_PCM_IOPLUG_HW_PERIODS is.

I suppose it is the number of periods the hardware buffer can take ? Hence the SND_PCM_IOPLUG_HW_PERIODS value is actually derived from the size of the hardware buffer ?

Or is it rather the number of periods the ioplugin can receive at once ?

Please enlighten me, cheers, Stefan