[theora-dev] bitstream changes
dan at on2.com
Mon May 12 16:59:14 PDT 2003
> From: Ralph Giles [mailto:giles at xiph.org]
> > ok now I see why we need another packet in the header. The
> This is now done, along with the vorbis-style comment header.
> What else
> remains? I remember some discussion about there being a better way to
> pack the tables in the third header packet. Dan, do you still want to
> do that? Have you done it already?
Thanks for the work. I did implement a more efficient packing scheme for the huff trees. I will need to check out your build with the multiple header packets & merge them.
> I'd also like to add a colourspace flag to the info header. I don't
> think that's contentious; I'm thinking of just an 8 bit field with
> three or so defined values. Is there anything else that affects the
> bitstream, particularly the headers? if not I think we can
> proceed with
> an alpha2 release.
We really should get the huffman changes in there; there were some other things I did at that time, I need to review the code.
> The big holdup for beta is the spec. Obviously the bitstream needs to
> settle before that gets going, but maybe now is time to start. How's
> the schedule looking on that for those working on it?
I guess that's me. Unfortunately with the change in my employment status at On2, I haven't put as much time into this as I would like. I've gone from being paid to work on it to a volunteer status. That doesn't mean it won't get done, but I can't put an exact date on it. I figure about a month of reasonably consistent work will get us to a reasonable place for beta release. I'm hoping to put that month in starting in a couple weeks, so perhaps July 1 is a reasonabe date to look for.
Isn't the plan to integrate Ogg2 into this beta release? How is that looking?
> Finally, I should mention for those who don't already know,
> we've been
> maintaining todo lists and idea pages for various xiph projects in a
> wiki. Please check out http://wiki.xiph.org/TheoraTodo and
> add anything
> you think is relevant.
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___ Dan Miller
(++,) Founder, On2 Technologies
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