[alsa-devel] Miscellaneous ioplug questions

I have some questions about some ioplug implementation details:

- Is the value returned from the pointer callback supposed to be a monotonically increasing value, or should it wrap at the buffer size? The documentation says "get the current DMA position" which isn't clear to me.

- Must the pointer callback return values that are an integral multiple of the period size, or can it report partial periods?

- Should the poll FD be made writeable as soon as data is available, or only when at least avail_min is available?

Thanks,

Rob.