On Mon, 5 Feb 2024, Ellen Johnson wrote:
I didn't do anything special when configuring libtiff v4.6.0 to build with libjpeg-turbo, other than to make sure I saw the "dual mode" configuration specification – if I remember correctly when I built libtiff v4.6.0, when it looked for libjpeg-turbo it made sure some dual mode configuration was set to enable 8- and 12-bit modes. Is there a config setting I might have missed that enables working with 16-bit images?
It seems that "dual mode" is still "dual mode". I have not personally tested with 16-bit JPEG in TIFF images. It seems likely that it is not supported.
See the change notes at https://libtiff.gitlab.io/libtiff/releases/v4.5.0.html
"autoconf/cmake: detect (not yet released) libjpeg-turbo 2.2 to take into its capability of handling both 8-bit JPEG and 12-bit JPEG in a single build."I have also not specifically tested GraphicsMagick with 8/12/16 bit JPEG (outside of TIFF) with the new libjpeg-turbo, although someone told me that it was "working". It seems I should test it for myself.
Bob -- Bob Friesenhahn bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ Public Key, http://www.simplesystems.org/users/bfriesen/public-key.txt
_______________________________________________ Tiff mailing list Tiff@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/tiff
