[alsa-devel] concept of substream...
clemens at ladisch.de
Wed Feb 8 10:16:55 CET 2012
Vinod Koul wrote:
> I was trying to understand the concept of substream. So can we have a
> device which can have support say 5 substreams and these are controlled
> (start/stop) independent of each other.
> At any instance we can have any number of substreams active and runtime
> we should be able to activate/deactivate a particular substream.
If by "active" you mean opened or running, yes.
Please note that when opening a device without specifying a substream
number, ALSA will open the first free one. This implies that all
substreams should go the same output (i.e., be mixed together).
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