• Urvang Joshi's avatar
    Palette Optimization: O(1) context lookup. · cdbe7085
    Urvang Joshi authored
    Now that we have small number of contexts (5), use hash multipliers
    (instead of base 11), so that color context hash is within a small
    range. This allows us to use a lookup table to get color context
    instead of a for loop.
    
    Output bitstreams are bit-exact, so no change in compression.
    
    Change-Id: I8cd8c893048c2fc6b22ccbd56f652d11486e2ee9
    cdbe7085
entropymode.c 82.8 KB