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  • Angie Chiang's avatar
    Add av1_optimize_txb()/optimize_txb() · 07c57f3b
    Angie Chiang authored
    This function will check if downgrading each coeff by one level
    will reduce overall rd cost. If so, it will down grade the
    coeff and update the effect and then move on to the next coeff.
    In general, we found out that updating according to the
    coding order will provide better coding performance.
    The optimization order is as follows.
    1) forward optimize coeffs == 1 or -1 only
    2) backward optimize all coeffs
    Change-Id: Ic0fd4d44d11878258e09d4fa87a8b48b397a10a8