PNG_PASS_START_ROW 2525 3rdparty/libpng/png.h    -1)-PNG_PASS_START_ROW(pass)))>>PNG_PASS_ROW_SHIFT(pass))
PNG_PASS_START_ROW 2534 3rdparty/libpng/png.h    (((yIn)<<PNG_PASS_ROW_SHIFT(pass))+PNG_PASS_START_ROW(pass))