I'm using Gimp 2.9 experimental build, which I downloaded from partha.com, to specifically have edit ability with 16-bit per channel images. I originally posted in gimpforums.com and was told I should try here. I'm trying to write a Python plugin to export an image as a raw file (just data, no header). The current option to export as raw image data (File -> Export as -> Raw image data) seems to only support writing out as 8-bit even when the image precision is greater than 8-bit. So I wanted to write a plugin so I could export my 16-bit per channel image to a raw file with the 16-bit data preserved. My image is a 16-bit grayscale 3x3 image with a checkerboard pattern of alternating white and black pixels. I used the sample script 'test-discolour-layer-v4.py' from http://registry.gimp.org/node/28124 as a guide on how to iterate through every pixel. I have some questions and ran into some problems. What I have so far can be seen here (http://pastebin.com/U49VZYVT). It just iterates through the pixels and outputs values to the error console. 1. How do I query for the precision? That is, I want to know if the current image is 8-bit gamma integer, or 16-bit linear integer, or something else. I looked at the image object's attributes and didn't find anything. 2. When I get the pixel value from srcTile[x,y], the value is always 8-bit. With the white pixels, the value should be 65535 but I got 255. How do I get the proper value? When I use the Color Picker tool with info window, it says 65535 for white. How do I get that value? 3. My code creates a new layer from visible and then queries the pixels from that. In my image, all values returned are 255 even for the black pixels. When I put my checkboard pattern on the Background layer and query that layer, I get correct values (though in 8-bit). For any other layer other than Background, the values are always 255. I don't know what I'm doing wrong. Can someone help me or point me in the right direction? Thanks. _______________________________________________ gimp-developer-list mailing list List address: gimp-developer-list@xxxxxxxxx List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list List archives: https://mail.gnome.org/archives/gimp-developer-list
