[pulseaudio-discuss] HDMI passthrough request for help

Xavier Bestel xavier.bestel at free.fr
Fri Feb 18 08:18:44 PST 2011

On Fri, 2011-02-18 at 08:07 -0700, Kelly Anderson wrote:
> Actually I though working on it now would be beneficial both for pulse 
> and xbmc.  Xbmc should be able to rock out as soon as pulse is 
> official.  I might uncover something useful to pulse while hacking xbmc.

There are a few things missing for me to have xbmc+pulse working well
with a surround system over HDMI:
- volume control when in passthrough mode
- volume control via the amplifier; I see 2 methods here:
	- either via HDMI CEC, but from the latest spec the only
	  available commands are volume-up and volume-down, no way
	  to directly set a volume, nor to calibrate it properly
	- via a serial cable, it's amp-specific but more capable
- [off topic] more than 2 PCM channels via HDMI radeon drivers


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