Difference between PlaybackMixer and PlaybackMixerElem

[Curtis Malainey <cujomalainey@xxxxxxxxxx>]

Hello Jaroslav,

Just a quick question, what is the difference between PlaybackMixer
and PlaybackMixerElem? I can see that one can be parsed using
snd_use_case_parse _selem_id? Is that the only difference?

Thanks
Curtis