Re: [Ipodlinux-devel] status update 17.02.03

[Chandan K. [home] <ch...@to...>]

Hi Bernard,

> There is a newer version of the Intel libraries that may also provide
> some improvement.  Last time I looked there was a 3.0 download but I
> couldnt install the thing as I dont have a RPM system (or the patience
> to stuff about with them).  These libraries also have JPEG processing
> which could be quite cool.
> 

I think I am using the 3.0 ... I did download the older version, but I
installed the latest one in the end. The RPM has no dependency, so you
can safely install it. It just puts in some files under
/usr/local/ipp/ippsa111

> The other audio decoder option is madplay.  I was using that originally
> but not getting very good performance.  Andre (see the CC list) sent me
> some ARM performance patches which should help.
> 

I also tried ffmpeg (which has always been known for its performance,
and it has a integer only version too). But I have not seen/used ARM
specific optimisations with ffmpeg.

If you could please send me the ARM patches for madplay I will give it a
shot. I think intel achieves the phenomenal performance by a lot of
hand-optimisations.

> Regarding the playlists etc have you looked at any of the existing Linux
> programs for processing the current iPod databases?  I imagine a lot of
> Mac users would be quite happy to keep using iTunes to manage their
> stuff...

There is enough support for using iPod + iTunes with Linux. There is a
scripting tool called gnupod ( http://sf.net/projects/gnupod), there is
a iTunesDB library ipod ( http://ipod-on-linux.sf.net ). I do have a
KDE/Qt program which supports iTunes format and adding/removing songs,
creating and managing playlists etc (http://guipod.sf.net).
We can continue to use it in our firmware, but also provide a foldermode
to browse and play from folders directly.

cheers,
Chandan