[FFmpeg-devel] [PATCH] swresample/rematrix: handle 22.2 as a 9 channel layout

[Jan Ekström]

On Fri, Aug 14, 2020 at 8:36 PM Michael Niedermayer
<michael at niedermayer.cc> wrote:
>
> On Thu, Aug 13, 2020 at 01:26:58AM +0300, Jan Ekström wrote:
> > This is as far as 22.2 follows the same channel order as
> > WaveFormatExtensible's channel mask (and the AV_CH_* defines).
> >
> > After LFE2 the side channels would follow, but that offset of
> > one stops us from utilizing them without further tweaks.
> >
> > This change was verified by using swresample to downmix to 5.1,
> > and then feeding that to WASAPI.
> > ---
> >  libswresample/rematrix.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
>
> probably ok
>

Thanks for taking a look. I originally planned on sending a link to a
test sample I created somewhere during the time attempting to validate
the AAC decoder, which I then also utilized to check the result of
this:
https://megumin.fushizen.eu/samples/22.2_input_test_sample.wav

...but alas then I never got to it afterwards.

Jan