21 lines
865 B
Python
21 lines
865 B
Python
"""NES background image: 256x240, 4 sub-palettes (universal bg + 3 each), tiles."""
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from __future__ import annotations
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from ...convert.base import Conversion
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from . import _common
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WIDTH, HEIGHT = 256, 240
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PIXEL_ASPECT = 1.0 # NES pixels are ~square (8:7 really; close enough)
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def convert(img_rgb, palette_name="nes", dither_mode="floyd",
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intensive=False, base_color=None):
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subs = _common.pick_subpalettes(img_rgb, mono=False)
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pal32, nt, chr_rom, idx, err, plab, prgb = _common.encode(
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img_rgb, dither_mode, subs)
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return Conversion(
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mode="bg", width=WIDTH, height=HEIGHT, pixel_aspect=PIXEL_ASPECT,
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index_image=idx, data={"palette": pal32, "nametable": nt, "chr": chr_rom},
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data_addr=0, viewer="nes", preview_rgb=prgb[idx], error=err,
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meta={"palette": "nes", "dither": dither_mode},
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)
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