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  • Yaowu Xu's avatar
    Reworked context conversion between 8x8 and 4x4 · b92a96d8
    Yaowu Xu authored
    The commit rationized and simplified the entropy context conversion
    betwen MB using 8x8 transform and MB using 4x4 transform. The old version
    had a number of weirdness in how 4x4 transform MB's context is used for
    8x8 blocks other than the first 8x8 within a MB.
    Test showed the change has a gain ~.1% for avg psnr, glb psnr and ssim on
    the limited HD set.
    Change-Id: I774536c416baa6845aa741f956d8a69fa40e5d47