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While writing a GIMP 2.0 plugin via Python and gimpfu, I've run into pdb procedures such as file_raw_save(...). There arguments are laid out in the GIMP Procedure Browser (Help->Procedure Browser). But when calling them I receive very unhelpful output. My code and output is as follows:

Plugin code:

def save_aci(save_img, filename):
    img = save_img
    filename = filename.strip()
    pdb.file_raw_save(img, img.layers[0], filename, filename)

register(
    "python_fu_save_aci",
    "Exports to ACI file",
    "Exports image to ACI file, with LODs if they are present",
    "Author",
    "Author",
    "2023",
    "Save ACI File",
    "GRAYA",      # Currently only support export from Grayscale image (with alpha) to (RG_88) .aci format
    [
        (PF_IMAGE, "save_img", "Image to Save", None),
        (PF_FILE, "filename", "Filename Fullpath", None),
    ],
    [],
    save_aci, menu="<Image>/File/")

main()

Output when running GIMP plugin:

/home/astro/.gimp-2.8/plug-ins/testplugin.py: fatal error: Segmentation fault
^C/usr/lib64/gimp/2.0/plug-ins/script-fu terminated: Interrupt
gimp: terminated: Interrupt
/home/astro/.gimp-2.8/plug-ins/testplugin.py terminated: Interrupt
/home/astro/.gimp-2.8/plug-ins/testplugin.py terminated: Interrupt
[astro@cobalt-vm plug-ins]$ gimp
Traceback (most recent call last):
  File "/usr/lib64/gimp/2.0/python/gimpfu.py", line 736, in response
    dialog.res = run_script(params)
  File "/usr/lib64/gimp/2.0/python/gimpfu.py", line 361, in run_script
    return apply(function, params)
  File "/home/astro/.gimp-2.8/plug-ins/testplugin.py", line 128, in save_aci
    pdb.file_raw_save(img, img.layers[0], filename, filename)
RuntimeError: calling error

After messing around with the filename arguments (perhaps one expected a path, and the other just a filename), the same output occurs. I was unable to find any documentation on this issue either.

My GIMP version is 2.8 and GIMP is running the script via Python 2.7.

Any suggestions?

Michael Buerger
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1 Answers1

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Your code is OK and works in Gimp 2.10. I get the same calling error when I run it in my Gimp 2.8. So I assume it's a bug that was fixed later.

Gimp 2.10 has been around for over 5 years, so why Gimp 2.8?

xenoid
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  • This is just the latest version available through the package manager on my VM (yum). The only reason I'm even trying to use this function is to bypass using layer.get_pixel(...) over and over as it is extremely slow for exporting to a custom file format for whatever reason. Any suggestions on any alternative strategies? – Michael Buerger Jun 08 '23 at 15:27
  • Ah, yes, RHEL and the code freeze from the Würm glaciation... Since you are using Python you can use "pixel regions". Basically you export the whole layer as a Python list/array. See [this answer](https://stackoverflow.com/a/47554384/6378557) for some examples. – xenoid Jun 08 '23 at 16:28
  • Actually amazing response, thank you! – Michael Buerger Jun 08 '23 at 20:05