Re: [PATCH 11/11] ALSA: digi00x: apply double-oh-three algorism to multiplex PCM samples

Takashi Sakamoto
2015-03-19T22:51:43Z

On Mar 20 2015 07:46, Takashi Sakamoto wrote:
> I can't understand what character devices you mention about. If you
> mention about ALSA PCM character devices (usually
> /dev/snd/pcmC%uD%d[p|c]), it's yes. In fact, one ALSA application can
> use ALSA PCM character device for one direction (playback/capture). So
> the access by any other applications causes -EBUSY. (here, I ignore
> alsa-lib's PCM direct mixing layer.)

I'll correct the 'ALSA application' with 'ALSA PCM application'. The
ALSA PCM application and ALSA Control application are different because
they access to different character devices and use different set of
ioctl(2) interfaces or different API set given by alsa-lib.

Regards

Takashi Sakamoto