[LAD] ALSA docs

Fons Adriaensen fons at linuxaudio.org
Mon Apr 14 16:11:12 UTC 2014

On Mon, Apr 14, 2014 at 03:41:09PM +0200, Clemens Ladisch wrote:
> Fons Adriaensen wrote:
> > if a device supports the pcm_resume() function, and it returns 0,
> > is a pcm_start() required or not?
> If a device supports pcm_resume(), then the buffer is in the same
> state it was when it was suspended, i.e., it is still running, and
> continuing from the same position in the buffer.

Thanks !

So no pcm_start would be required.

A few more questions if I'm allowed:

* are there any devices that do support pcm_resume() ?
  (none of those I could test)

* is suspend/resume supposed to work with USB souncards ?
  (a quick test with an UA25EX leads to 100% CPU for both
  Jack and my test apps)



A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)

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