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/*
* nosubst.h - guessing what chunks are not letters and should not be changed
*/
/*
* This is the algorithm that mark bitmaps that cannot have a substitution.
*
* First, it looks what blits are suspiciously big. They will be no-subst.
* A blit with a bounding box that intersects a no-subst box will also be no-subst.
* And so no-subst infection is spread until no more new no-substs are found.
*
* You may ask, why this \expandafter when the splitter could simply mark results
* of splitting suspiciously big bitmaps as no-subst?
* Answer: this algorithm works even when we've read a DjVu page and didn't
* actually render it. Well, it works at least with cjb2-encoded files.
*/
MDJVU_FUNCTION void mdjvu_calculate_not_a_letter_flags(mdjvu_image_t);
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