2018.05.23 09:55 "Re: [Tiff] ] Not able to write TIFF_LONG8 field_type tags", by

On 2018-05-23 08:21, Bhaskar Reddy wrote:

Hi everyone,

I am unable to write following tags to Tiff image

TIFFSetField(tif, TIFFTAG_STRIPOFFSETS,value)

TIFFSetField(tif, TIFFTAG_TILEOFFSETS ,value)

TIFFSetField(tif, TIFFTAG_STRIPBYTECOUNTS ,value)

TIFFSetField(tif, TIFFTAG_TILEBYTECOUNTS ,value)

as

> __TIFFVSETFIELD _function in tif_dir.c has no switch cases

I assume this is intentional, because the contents of these fields are automatically maintained by libtiff and updated by TIFFWriteDirectorySec(), TIFFFlush(), etc. Why do you need to manually adjust them? Can't you treat them as read-only properties?

I've never needed to mess with them when writing out a BigTIFF. Simply using TIFFWrite*Tile() and related functions will keep these lists of counts and offsets up to date.

Regards,

Roger