In my Gimp 2.99 plugin, I have the bytes of a layer that I obtained from a Gegl.Buffer like this:
width: int = drawable_in.get_width()
height: int = drawable_in.get_height()
buffer: Gegl.Buffer = drawable_in.get_buffer()
rect: Gegl.Rectangle = Gegl.Rectangle.new(0, 0, width, height)
Gegl.init(None) # As Seen from https://gitlab.gnome.org/GNOME/gimp/-/issues/8689
# see https://developer.gimp.org/api/gegl/method.Buffer.get.html
src_pixels: bytes = buffer.get(rect, # GeglRectangle rect
1.0, # double scale
None, # Babl format
Gegl.AbyssPolicy.CLAMP # GeglAbyssPolicy repeat_mode
)
I want to process src_pixels into a PNG array of bytes. Ideally, I would like to do this all in memory, without saving to a file, then reading the file back in, because I would like to avoid platform issues and the IO performance bottleneck. But I understand that might be the only practical way.
Regardless, I would appreciate some advice and perhaps a code snippet, on how to proceed. The online docs for GEGL are hard to understand, and the very few examples I’ve found for python seem largely inapplicable.
Thanks!