[vorbis-dev] vorbis on playstation 2

Nicolas Pitre nico at cam.org
Thu Feb 6 17:50:13 PST 2003

On Thu, 6 Feb 2003, David Etherton wrote:

> > Depending on the stream used, the second table is unlikely to be
> referenced.
> That reminds me -- looking at the profile hits in mdct_backward, there were
> several switch statement cases that never got any hits.  Given that I don't
> need to decode any arbitrary ogg vorbis bitstream, are there simplications I
> can make here to cut down on the amount of code I have to optimize?

The switch cases are optimisations by themselves.  A compromise was made
between table size and table value interpolation in the code.  If you can
guarantee that your streams won't ever use the larger window sizes then
those interpolation cases are useless.


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