ASF roundup
William Pitcock
nenolod at atheme.org
Mon Jan 8 01:02:25 CET 2007
Yes, I am the author of asfheader.txt, and did the reverse engineering to
get there. It's cleanroom. However, I have not yet entirely reverse
engineered the ECF portion of ASF.
On Sun, 7 Jan 2007, Xavier Duret wrote:
> So let me check that I get this straight. There are 2 different wma plugin for taglib.
>
> The one currently in Amarok ("svn://anonsvn.kde.org/home/kde/trunk/extragear/multimedia/amarok") and maintained by Martin
> comes from the implementation in libtunepimp written by Lukas ("http://svn.musicbrainz.org/libtunepimp/trunk"). Lukas, can
> you tell us what has been the source of information used for writing wma support in libtunepimp?
>
> The older one from Umesh comes from ffmpeg. Who wrote the wma parser for ffmpeg ("svn://svn.mplayerhq.hu/ffmpeg/trunk")? I do
> not find any asfdec.c in subversion but asf.c and asfenc.c have a lot of contributors. William, are you the one that
> reverse-engineered of the asf codec and produced the "asfheader.txt"?
>
> Both implementations are LGPL. The implementation based on ffmpeg does not meet the coding criteria of taglib.
> The implementation in Amarok is fine according to Scott.
>
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