[Buildroot] [PATCH 0/7] add Phonon support to qtopia4
Hans-Christian Egtvedt
hans-christian.egtvedt at atmel.com
Tue Dec 9 10:45:01 UTC 2008
On Tue, 9 Dec 2008 11:34:59 +0100
Markus Heidelberg <markus.heidelberg at web.de> wrote:
> Hans-Christian Egtvedt, 09.12.2008:
> > On Mon, 8 Dec 2008 23:00:09 +0100
> > Markus Heidelberg <markus.heidelberg at web.de> wrote:
<snipp>
> > The reason playback is so slow is that you are probably not using
> > the pixel coprocessor (PICO) to do the work. That was why getting
> > gst-ffmpeg (libavcodec) with the AVR32 patches to work would be very
> > nice.
>
> This optimization with using the PICO should also be possible for Qt
> output, independent of video playback, shouldn't it?
>
No, you will have to write optimized assembly to take advantage of the
PICO. Qt does not use the PICO by default, not even DSP or SIMD
instructions.
> > > So currently I'm using mplayer -geometry
> > >
> >
> > And with the AVR32 patch, this is quite optimized and uses the PICO.
>
> Sounds comprehensible, I had not really thought about it.
> Are there plans or have there already been efforts to get the AVR32
> patch into mainline ffmpeg? The mplayer version rc1 in buildroot is
> quite old, OK rc2 is not very new, too. But it seems as if the big
> atmel patch is preventing from updating.
>
I am looking into porting the PICO stuff for ffmpeg to upstream ffmpeg,
and instead use that for mplayer. Then it should be easy to bump the
version to rc2 as well.
--
Best regards,
Hans-Christian Egtvedt
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