[alsa-devel] [PATCH v4 2/4] ALSA: compress: Add function to indicate the stream has gone bad

[Vinod Koul]

On Tue, Apr 19, 2016 at 09:31:40AM +0100, Charles Keepax wrote:
> On Tue, Apr 19, 2016 at 11:55:52AM +0530, Vinod Koul wrote:
> > On Tue, Apr 12, 2016 at 11:32:07AM +0100, Charles Keepax wrote:
> > 
> > > + * @state: state to transition the stream to
> > > + *
> > > + * Stop the stream and set its state.
> > > + *
> > > + * Should be called with compressed device lock held.
> > > + */
> > > +int snd_compr_stop_error(struct snd_compr_stream *stream,
> > > +			 snd_pcm_state_t state)
> > 
> > Do we want the state as an agument here, since we are invoking stop, it
> > should transistion to the stopped state
> > 
> 
> This was my interpretation of this comment of yours:
> 
> "Also should this be made a generic stop rather than
> xrun. Perhaps the reason can be specified as an argument."
> 
> If you clarify what you are looking for I am happy to respin. We
> should set the state to something that indicates there has
> been an error, such that things are distinct from a normal
> stop operation. Personally I liked simply calling the function
> snd_compr_stop_xrun and always setting it to xrun and it matches
> what the PCM framework does. So I am happy to go back to that if
> you prefer?

Your interpretation was right, but there is no point in setting xrun as this
will be essentially overwritten when you invoke the snd_compr_stop()

It does set it back to setup state..

Thanks
-- 
~Vinod