Add support for loading TIFF files with PSD layer information
When exporting to TIFF, Photoshop includes layers and other info in a proprietary TIFF tag 37724. It would be nice if we could support loading this information.
Some info about this is available here: https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#50577413_48544
There have been mentions of this in a few issues:
- Issue #97 (closed) (sample image here: mainlogo3.tif)
- Issue #3890 (see especially here, with sample images tiff_from_gimp_rasterText.tif and tiff_from_ps_rasterText.tif. This issue also references https://www.imagemagick.org/discourse-server/viewtopic.php?t=26785
For better visibility, I think deserves its own issue here. If you have a TIFF with PSD layers inside, GIMP will show the following warning: Unknown field with tag 37724 (0x935c) encountered
.
We would like some more example TIFF images where this happens. If have such an image and are allowed to share it, you can attach it to this issue.
Setting milestone to 3.0 to keep it visible, but not sure if we will get around to it before that.