New Version DDigit v1.02 see first post.
Fix for planar dshift bug introduced in v1.01 6 Mar 2011.
Would not really affect YV12 (except perhaps printing last character in font,
ie ydieresis). Would though present problems in planar colorspaces where
there are vertically 4 luma samples to 1 chroma sample.
Hopefully, I got it right this time.
PS, planar speed test times may have gone up one or two tenths of a second.