• Deb Mukherjee's avatar
    New previous coef context experiment · 08f0c7cc
    Deb Mukherjee authored
    Adds an experiment to derive the previous context of a coefficient
    not just from the previous coefficient in the scan order but from a
    combination of several neighboring coefficients previously encountered
    in scan order.  A precomputed table of neighbors for each location
    for each scan type and block size is used. Currently 5 neighbors are
    Results are about 0.2% positive using a strategy where the max coef
    magnitude from the 5 neigbors is used to derive the context.
    Change-Id: Ie708b54d8e1898af742846ce2d1e2b0d89fd4ad5