[pulseaudio-discuss] module-remap-sink question
matt at v8zman.com
Fri Jan 16 09:18:40 PST 2009
I'm glad I could help! That bug (feature for most people :) ) bothered
me for quite a while too.
Jan Kasprzak wrote:
> Jan Kasprzak wrote:
> : > I seem to remember (I had this problem before) that pulseaudio by default
> : > applies mixing to a greater than stereo card if a stereo sample is sent
> : > to it. At the time there was a flag or option in the config file that
> : > could be set, but since I didn't end up going that route I don't have
> : > it anymore. I believe it was Lennart who gave me the hint to the issue
> : > (and might have actually fixed my specific issue in the code). This was
> : > back in 9.10, which I am still running.
> : >
> : > Just another avenue to explore, sometimes that's all you need.
> : OK, I have found that PA inded does this (see the
> : src/pulsecore/resampler.c:calc_map_table() function).
> : Thanks!
> : It also explains my observations with special behaviour of the
> : Subwoofer/LFE channel - it is hardcoded for the LFE there).
> : It is apparently driven by the PA_RESAMPLER_NO_REMAP flag,
> : but I have to figure out where can I set this flag and whether it
> : can be done without recompiling PA.
> OK, the "remix=no" on the module-remap-sink did the job.
> I have added the description of this option to the documentation at
> Also, naming the all channels but the first two "aux0 to aux5"
> instead of "rear-left,rear-right,center,subwoofer,side-left,side-right"
> does the job, because the aux channels are not included in the default
> PA up-mixing. This is even written in the example, I don't know why did
> I overlooked it.
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