• hui su's avatar
    Palette: use color cache to compress base colors · 33567b21
    hui su authored
    Get a list of palette base colors that are used in the above and
    left blocks, referred to as "color cache". For each cache color,
    signal if it is present in current block's palette, so that we
    don't need to transmit their raw values.
    When palette-delta-encoding is enabled, compression is improved
    by 2% on keyframe and 1% overall for the screen_content testset.
    Change-Id: I4cb027f1904aa9d0ab1c8f00ea9ee34bf5f16234
bitstream.c 180 KB