2023.04.12 15:14 "[Tiff] TIffWriteDirectory() causes problems", by David C.
Partridge
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2023.04.13 13:16 "Re: [Tiff] TIffWriteDirectory() causes problems", by Olivier Paquet
I'm not sure where your values come from so I can't say if your rowsPerStrip is ok but the rest looks right. I would rather read TIFFTAG_ROWSPERSTRIP directly than try to compute it, unless you're setting it yourself of course. Compression will not change the number of strips, only their size.
I don't know if you'll still need TIFFWriteDirectory() as I've never done exactly that. It should be obvious when trying it.
Olivier