First public commit.

lenser/amiga/convert/__init__.py

@@ -0,0 +1,23 @@
+"""Commodore Amiga conversion dispatch."""
+from __future__ import annotations
+
+from ... import imageprep
+from . import lowres, mono
+
+# NOTE: HAM6 (4096 colours) was implemented and looks superb, but MAME's
+# preliminary Amiga can't render 6-bitplane/HAM modes cleanly (fixed-position
+# black bands at the screen edges), so only the MAME-verified 5-plane low-res
+# (32 colours) and mono modes are shipped.
+_MODULES = {"lowres": lowres, "mono": mono}
+MODES = list(_MODULES.keys())
+
+
+def convert_image(path_or_img, mode="lowres", palette_name="amiga",
+                  dither_mode="floyd", intensive=False, prep_opt=None,
+                  base_color=None):
+    prep_opt = prep_opt or imageprep.PrepOptions()
+    module = _MODULES.get(mode, lowres)
+    img_rgb = imageprep.prepare(path_or_img, module.WIDTH, module.HEIGHT,
+                                module.PIXEL_ASPECT, prep_opt, border_rgb=(0, 0, 0))
+    return module.convert(img_rgb, palette_name, dither_mode, intensive,
+                          base_color=base_color)