[FFmpeg-devel] [PATCH] mpegaudio float default

Michael Niedermayer michaelni
Mon May 17 17:18:49 CEST 2010

On Thu, May 13, 2010 at 06:23:46PM -0400, Ronald S. Bultje wrote:
> Hi,
> On Thu, May 13, 2010 at 6:12 PM, Michael Niedermayer <michaelni at gmx.at> wrote:
> > On Thu, May 13, 2010 at 10:56:36PM +0100, M?ns Rullg?rd wrote:
> >> Michael Niedermayer <michaelni at gmx.at> writes:
> >> 3x slower on Cortex-A8. ?We need to discuss betters way to choose
> >> implementation. ?Ideally we should have something that extends well to
> >> other codecs too. ?There are fixed-point versions of at least wma
> >> floating about, and IMO we should be working towards merging them.
> >
> > someone is working on fixp wma ? :)
> Rockbox (?) already has a fxp wma1/2 decoder, based on the FFmpeg one
> from several years ago, that they'd like to backport into our tree if
> we're interested.

ive been pointed to
http://www.mail-archive.com/rockbox-dev at cool.haxx.se/msg07388.html
http://www.mail-archive.com/rockbox-dev at cool.haxx.se/msg07413.html

This thread does not sound like the rockbox devels seriously intent to
integrate fixed point support back into the ffmpeg codecs.
But iam not on their ML so its easy for me to misinterrpret this.

What my basic question is, is someone _really_ working on adding fixp
wma to ffmpeg?
The reason for my question is that it seems there is active effort done
by people to use the rockbox codecs directly, and this is totally wasted
effort once ffmpeg has fixp support in said codecs.
I would thus like to see them merged back in ffmpeg so that projects
can just use them without needing to link to a second lib or support
a different API, that is besides the thing with more forks more bugs
and maintaince effort issue.
If the rockbox devels help us merge the stuff back they can have
svn write access to maintain and improve the code of course.
If they dont want to merge their code back it shouldnt be much work
to do it ourselfs. What i really want to avoid though is us not
working on it with the reason the rockbox devels work on it while
they actually dont.

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

While the State exists there can be no freedom; when there is freedom there
will be no State. -- Vladimir Lenin
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