Re: How should we handle isochronous underruns?

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Ming Lei wrote:
> On Mon, Jul 1, 2013 at 9:06 PM, Clemens Ladisch <clemens@xxxxxxxxxx> wrote:
>> Ming Lei wrote:
>>> I understand the latency is effected by packet count in one URB,
>>> and it shouldn't be related with URB count,
>>
>> This is true only when capturing.  For playback, the latency is the
>> length of the entire pipeline.
>
> For playback, every URB submitted is added into hw table
> immediately, then the data will be played to speaker. I don't
> understand why the latency is the entire pipeline.

A submitted packet will be transmitted only after all the other packets
in the pipeline have been transmitted.


Regards,
Clemens
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