[alsa-devel] Set multiple mixer channel values at once

[Petr Kulhavy]

Hi Takashi,

thank you for the hint, I will try that.

Indeed the multichannel is a single control element. Do you mean to call 
multiple snd_ctl_elem_value_set_integer() followed by a single 
snd_hctl_elem_write() ?
Similar to what is described here 
https://alsa.opensrc.org/HowTo_access_a_mixer_control ?

Thanks
Petr

On 09/01/18 09:29, Takashi Iwai wrote:
> On Mon, 08 Jan 2018 12:01:34 +0100,
> Petr Kulhavy wrote:
>> Hi,
>>
>> does the ALSA library provide a method to set multiple channel values
>> of a multi-channel mixer element at once?
> It depends.  If the multi-channel is implemented in a single control
> element, you can set the whole update and write it in a single shot.
> But maybe not via alsa-lib mixer functions but with raw snd_ctl_*()
> stuff.
>
>
> Takashi
>