From mboxrd@z Thu Jan  1 00:00:00 1970
From: Clemens Ladisch <clemens@ladisch.de>
Subject: Re: Some questions about userspace control elements
Date: Sat, 07 Feb 2015 16:45:30 +0100
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To: Takashi Sakamoto <o-takashi@sakamocchi.jp>, "alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>
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Takashi Sakamoto wrote:
> On Feb 6 2015 18:38, Clemens Ladisch wrote:
>> The owner field is used because there is no other field to set the
>> count.
>
> No. In SNDRV_CTL_IOCTL_ELEM_ADD ioctl, struct snd_ctl_elem_info.count
> has the number of elements in this control, there it's an abuse of
> member unrelated to the count.

That is a different count.

struct snd_ctl_elem_info.count allows a control to have multiple values.
For example, a stereo volume control has two values.

kctl.count creates multiple controls.


Regards,
Clemens