Hi,
This topic has been touched before, but I did not find a conclusion:
How does one create an end-user solution where it is possible to mix
(select & combine) multiple sink-inputs into multiple sinks and then change
this 'mix' selection dynamically (preferably glitch-free)? The changes
would be performed using the D-Bus API (or any other API if that is
required).
A simple example is: I am playing sink-input SI1 on combine-sink C1 which
uses physical sink S1 as its slave. Now I also want to play sink-input SI1
on physical sink S2.
For the moment, I know 2 ways to accomplish this dynamically:
1) 'create new combines' - approach
* I create a new combine-sink C2 which uses both sink S1 and sink S2 as
its slaves. Then I move the sink input SI1 from old combine-sink C1 to new
combine-sink C2. Afterwards, I delete the old combine-sink C1.
* Disadvantages:
** not glitch-free (especially for listeners of sink S1 who do not
care about S2)
2) 'mute the unused links' - approach
* I create from the beginning a 'full mesh': C1 uses both sink S1 and
sink S2 as its slaves. 'playing a sink-input on a sink' then just
translates to 'unmuting the sink-input from the combine-sink on the actual
sink'
* Disadvantages:
** when dealing with a lot of sink-inputs and sinks, the amount of
'links' is huge. If a muted input is also increasing the resample load
(Can anyone confirm this statement?), this might be a resource-consuming
solution.
** all sinks need to be known upfront
Ideally, there would be a solution where you could change the slaves of a
combine-sink dynamically. But, afaik, this does not exist and is not
planned either.
So the question is: Are solution 1 and 2 really the only solutions for my
problem? Which one of the solutions would you favor over the other?
Kind regards,
Lode
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