Re: MIDI+USB - one way?

[Clemens Ladisch <clemens@ladisch.de>]

Takashi Iwai wrote:
> Clemens Ladisch wrote:
> > > (and i believe that no applications suffer by this change.)
> >
> > Yes, because applications expect the OSS behaviour.
> >
> > I didn't really look at the OSS PCM read() implementation, but the
> > sequencer read() already implements the correct POSIX behaviour.
> 
> i don't think that the oss pcm interface ever suffices the definition
> of posix above.  but we cannot change it since most of applications
> assume that the read aligned in a block size.

Sorry, I didn't mention that I do _not_ intend to change the PCM code.
It's fine as it is.

> in the case of alsa, this low-level behavior can be changed, because
> the difference can be absorbed inside the alsa-lib.

Both the OSS and native ALSA code finally use snd_pcm_lib_read() as far
as I see, so it could not be changed independently. (but I didn't look
deeply into this)

And there's already sleep_min or something like that, so we are beyond
POSIX anyway.

> but i see no good reason to change this now.

Neither do I.


Clemens


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