[ANN] Audio Video Library

Martin Kuball MartinKuball at web.de
Mon Feb 14 21:28:42 UTC 2005


Am Sunday 13 February 2005 23:57 schrieb Boris Gaertner:
>  "Martin Kuball" <MartinKuball at web.de> wrote:
>
>
> <snip>
>
> > Hi
> >
> > I would like to annonce my project to build a Library for
> > processing audio and video material with squeak. I put a 1st
> > version on the SqueakSource at kilana.unibe.ch. It's not much
> > yet. But you can load and analyze avi container with mpeg 4 video
> > and mp2 and mp3 audio content.
> >
> > I did this because I needed a tool to repair some broken avi
> > files. Other tools I tried just failed badly.
>
> </snip>
>
> Thank you for doing that work, Martin!
> It looks very promising.
> However, initialization of AudioVideoLib-Container-maku.1.mcz
> runs into an error. This is because
>    AvihChunk initialize
> is evaluated before
>    RIFFChunk initialize
> was evaluated.
>
> RIFFChunk initialize creates an IdentityDictionary that is needed
> for AvihChunk initialize.
> I think the problem here is that (as in change sets) there
> is no way to control the sequence in which the class initializers
> are called.
> A quick fix would add a check in
> RIFFChunk class>registerHandler:forType:

Ups! I should test importing the stuff into a fresh image by myself 
before publishing it. Thanks for the hint.

Martin



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