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
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