• Yaowu Xu's avatar
    add a new interp filter search strategy. · 1144fee3
    Yaowu Xu authored
    This commit addes a new strategy to reduce the search for optimal
    interpolation filter type. The encoder counts and store how many each
    filter type is selected and used for each of the reference frames.
    A filter type that is rarely used for all three reference frames is
    masked out to avoid computation.
    The impact on compression is neglectible:
    -0.02% on derf
    +0.02% on stdhd
    Encoding time is seen to reduce by 2~3%.
    Change-Id: Ibafa92291b51185de40da513716222db4b230383