• Paul Wilkins's avatar
    Removal of Qindex LUTS. · d39b5d05
    Paul Wilkins authored
    One of the problems arising when tweaking or adjusting the quantizer
    tables is that there are a lot of look up tables that depend on the QINDEX.
    Any adjustment to the link between QINDEX and real quantizer therefore tends
    to break aspects of for example the rate control.
    
    In this check in I have replaced several of the look up tables with functions that
    approximate the same results as the old Q luts but use a formulaic approach
    based on real Q values rather than QIndex. This should hopefully make it easier
    to experiment with changes to the Q tables without always having to go through
    and hand optimize a set of look up tables. Once things stabilize we may choose
    to re-instate luts for the sake of performance.
    
    Patch 2:
        Addressed Ronald's comments.
        vp8_init_me_luts() Added so luts only initialized once.
    
    Change-Id: Ic80db2212d2fd01e08e8cb5c7dca1fda1102be57
    d39b5d05
rdopt.c 90.6 KB