[pulseaudio-discuss] module-combine-sink: downmix of channels?

[Rene Bartsch]

Hi,

I've problems configuring the following use-case with Pulseaudio:

- 1x system-message mono sink
- 1x music stereo sink
- 1x video multi-channel (mono - 7.1) sink with up-/down-mix

- 1x internal stereo sound-card (priority 0)
- 1x stereo USB-speakers        (priority 1)
- 1x 5.0 USB audio-interface    (priority 2)

- there should be one master volume-control (sink?) for all three sinks 
(system message, music, video)
- sound-card sink specific volume-control should be usable to equal the 
absolute volume of the three sound-cards
- external sound-cards should be pluggable/removable without 
interruption of audio
- the current playback sound-card should be switched by highest priority 
when plugged in/removed
- when the USB audio-interface is plugged in stereo left/right (S/PDIF 
input channel 5/6) should be routed to the video sink
- system-message mono should be routed to front-center for the USB 
audio-interface and stereo for the stereo sound-cards
- music sink should always be stereo on all devices

How can i achieve this?

Thanx for any hint,


Renne