Re: ALSA HW buffer managment

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On Tue, 2006-11-07 at 08:48 +0200, Assaf Hoffman wrote:
> Hi,
> As I understood, ALSA buffer management uses the 'periods' notion to
> control the latency between SW stack and HW DMA.
> My HW is not capable of interrupting the SW on a period basis. The only
> interrupt HW generates is on half or quarter of the DMA buffer (for
> example, in capture, after each half of the buffer is filled with
> samples the HW will signal interrupt).

"Period" just refers to the interval between interrupts. So your
hardware supports either 2 or 4 periods per buffer.

Did you read "Writing an ALSA driver"?

Lee


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