#20 Optimisation of ArithCodec / BandCodec

open
nobody
None
5
2005-09-24
2005-09-24
Steve
No

Simplification of Arith_codec to remove unnecessary
variables and make the code clearer. Merging together
the DecodeSymbol / RemFromStream clarifies the
algorithm and allows some optimisation.

Change how contexts are chosen in BandContext to
reduce number of calls to ChooseContext.

Decoding at quality factor 7 gives a reduction of 2.5% at
CIF and 10% at HD720.

Discussion

  • Steve
    Steve
    2005-09-24

    Patch for Arith_codec / BandCodec off 5_3

     
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