[pulseaudio-discuss] [WIP] Passthrough support

[Arun Raghavan]

On Mon, 2011-03-14 at 14:57 -0500, pl bossart wrote:
> >> Other things I noticed: the volume is much higher in passthrough mode,
> >> maybe we need to find a way to set the volume on the headset to match
> >> the volume used for PCM. Also I heard some high-frequency modulations,
> >> typically coding noise, maybe there's still something fishy during the
> >> mp3 decode part.
> >
> > I get this sort of thing on, as far as I can tell, one channel as well.
> > I figured the decoder on the CSR chip wasn't that great.
> 
> Looks to me that the quality is slightly worse than with the initial
> patches, but it's of course a very subjective assessment since I need
> to reinstall pulse/gstreamer to check the differences instead of doing
> an A/B test. Can you check and make sure the payloader doesn't
> skip/change any bytes? If you dump what is actually sent to the
> headset and compare to the initial file, you shouldn't have any
> deltas.

Yep, I did that before I pushed out the code (verified a few frames by
hand, but I'll do something more extensive in the morning). I'm still
seeing the setconf error, but now that it's at least clear it's
connecting to the wrong seid, I'm hoping to get this fixed.

-- Arun