First public commit.

lenser/apple/convert/__init__.py

@@ -0,0 +1,20 @@
+"""Apple II conversion dispatch."""
+from __future__ import annotations
+from ... import imageprep
+from . import hgr_mono
+
+_MODULES = {"hgr_mono": hgr_mono}
+for _name in ("dhgr", "hgr_color", "mono"):
+    try:
+        _MODULES[_name] = __import__(f"lenser.apple.convert.{_name}", fromlist=[_name])
+    except Exception:
+        pass
+MODES = list(_MODULES.keys())
+
+def convert_image(path_or_img, mode="hgr_mono", palette_name="mono",
+                  dither_mode="floyd", intensive=False, prep_opt=None, base_color=None):
+    prep_opt = prep_opt or imageprep.PrepOptions()
+    module = _MODULES[mode]
+    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)