Re: [PATCH v2 1/3] ALSA: compress: document the compress audio state machine

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On 22-06-20, 15:13, Charles Keepax wrote:
> On Mon, Jun 22, 2020 at 08:28:48AM -0500, Pierre-Louis Bossart wrote:
> > On 6/22/20 1:58 AM, Vinod Koul wrote:
                      +----------+
> > a) can you clarify if we can go from running to free directly? is
> > this really a legit transition? There's already the option of doing
> > a stop and a a drain.
> > 
> 
> This is allowed in the current code, the kernel sends the stop
> internally in this case, so it kinda does go through the setup
> state just not from the users view point. I am not sure I have a
> good handle on if that makes sense or not.

The idea was to stop first so that we can handle dmas which might be
setup (like running/paused/prepared). So we should stop first and then
free up. But i think it was an overkill... :)

> > c) no way to stop a paused stream?
> 
> Currently the code does allow this and it certainly makes sense so
> should probably be added.

Yes will add

-- 
~Vinod



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