batch-spritify.py

#!/usr/bin/env python

# ffmpeg -i *.gif -r 6.0 `basename *.gif .gif`%4d.png; gimp-console -i -b '(python-fu-batch-spritify RUN-NONINTERACTIVE "*.png")'

import math
from gimpfu import *

def batch_spritify(glob="*.png"):
    files = pdb.file_glob(glob, 1)
    for file in files[1]:
        timg = pdb.gimp_file_load(file, file)
        tdrawable = pdb.gimp_image_get_active_drawable(timg)
        pdb.gimp_image_undo_group_start(timg)
        pdb.gimp_desaturate_full(tdrawable, DESATURATE_LIGHTNESS)
        pdb.gimp_image_convert_indexed(timg, NO_DITHER, CUSTOM_PALETTE, 0, FALSE, FALSE, "RGBDS")
        pdb.gimp_image_scale_full(timg, tdrawable.width/2, tdrawable.height/2, INTERPOLATION_NONE)
        pdb.gimp_image_resize(timg, 56, 56, (56-tdrawable.width)/2, (56-tdrawable.height)/2)
        pdb.gimp_image_convert_grayscale(timg)
        pdb.gimp_image_flatten(timg)
        pdb.file_png_save_defaults(timg, pdb.gimp_image_get_active_drawable(timg), pdb.gimp_image_get_filename(timg), pdb.gimp_image_get_filename(timg))
        pdb.gimp_image_undo_group_end(timg)
    pdb.gimp_quit(0)

register(
        "batch_spritify",
        "Make the specified layer look like a sprite",
        "Make the specified layer look like a sprite",
        "Danny-E 33",
        "Danny-E 33",
        "2019-2019",
        "<Toolbox>/Python-Fu/_BatchSpritify...",
        "RGB*",
        [
            (PF_STRING, "glob", "glob", "*.png")
        ],
        [],
        batch_spritify)

main()