• Jingning Han's avatar
    Conditionally drop cutting tails in lv-map coeff optimization · 8be58fad
    Jingning Han authored
    When the optimized non-zero tail is longer that 2, the likelihood
    that forcing to drop all the tail coefficients would give better
    rate-distortion optimization is much lower. This commit makes the
    encoder to check such conditions and speed up the lv-map/multi
    encoding speed.
    
    Local test clips at high target bit-rate / quality show 20% overall
    encoding speed up. The coding performance change for lowres is
    0.014%.
    
    Change-Id: Ifcf1d18e453a83110ca8be794aee26f3e0237605
    8be58fad
encodetxb.c 83.7 KB