• Debargha Mukherjee's avatar
    Reduce/Eliminate line buffer for loop-restoration. · e168a783
    Debargha Mukherjee authored
    This patch forces the vertical filtering for the top and bottom
    rows of a processing unit for the Wiener filter to not use border
    more than what is set in the WIENER_BORDER_VERT macro.
    This macro is currently set at 0 to eliminate line buffer completely,
    but it could be increased to 1 or 2 to use limited line buffers
    if the coding efficiency is affected too much with a 0 line-buffer.
    Also, for the sgr filter we added the option of using overlapping
    windows horizonttally and vertically to improve coding efficiency.
    The vertical border used is set by the SGRPROJ_BORDER_VERT
    macro, while the horizontal border can be set by the
    SGRPROJ_BORDER_HORZ macro set at 2, the max needed. Currently we do not
    recommend changing SGRPROJ_BORDER_HORZ below 2.
    The overall line buffer requirement for LR is twice the max of
    Currently both are set as 0, eliminating line buffers completely.
    Also this patch extends borders consistently before CDEF / LR.
    Change-Id: Ie58a98c784a0db547627b9cfcf55f018c30e8e79
pickrst.c 58.7 KB