[theora-dev] Specific code questions

Monty xiphmont at xiph.org
Sun Sep 15 12:08:42 PDT 2002

On Sat, Sep 14, 2002 at 06:40:28PM -0400, Dan Miller wrote:
> > Ah, Write32ToBuffer is doign the flipping.  What an odd little bitpacker.

> hmm... so I guess my previous post was all wrong?  Or perhaps I'm
> confused, and this routine is doing just what I said -- making sure
> the byte order is the same on all architectures?  I'm going to check
> into this with those who know what is going on.  I apologize for
> shooting off before I had my information straight.

I also apologize for doing some amount of thinking aloud as I put
nitty-gritty into place.  VP3 is clearly defined as a big-endian codec
with MSb-first packing, and that is a sensible choice (makes fast
huffman decode easier).  Vorbis II and future Ogg still will be
MSb-first... so I think I'll just add that option to the Ogg bitpacker
now and let Theora use it.  It will simplify packet buffer management.

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