• Deb Mukherjee's avatar
    Refactoring of switchable filter search for speed · 28b1db92
    Deb Mukherjee authored
    Refactors the switchable filter search in the rd loop to
    improve encode speed.
    
    Uses a piecewise approximation to a closed form expression to estimate
    rd cost for a Laplacian source with a given variance and quantization
    step-size.
    
    About 40% encode time reduction is achieved.
    
    Results (on a feb 12 baseline) show a slight drop:
    
    derf: -0.019%
    yt: +0.010%
    std-hd: -0.162%
    hd: -0.050%
    
    Change-Id: Ie861badf5bba1e3b1052e29a0ef1b7e256edbcd0
    28b1db92
vp9_entropymode.h 4.42 KB