[theora-dev] Block Coding Pattern

Mike Melanson melanson at pcisys.net
Wed Feb 19 18:07:59 PST 2003

        There seem to be 2 sets of block coding patterns in the
VP3x/Theora algorithm. Based on the comments in the code, the first
pattern is used if encoder version < 6 and the second pattern is used in
encoder version >= 6. None of the code to support the second pattern is
ever called. Is there an encoder with a version >= 6?

        The code in question is QuadDecodeDisplayFragments() vs.
QuadDecodeDisplayFragments2() in CoreLibs/CDXV/Vp31/dx/generic/Frarray.c.
They follow different pattern rules. But the second version is never


	-Mike Melanson

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