49 lines
1.6 KiB
Python
49 lines
1.6 KiB
Python
import os.path
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from PIL import Image
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import numpy as np
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import dither_dhr as dither_dhr_pyx
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import dither_pattern
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import palette as palette_py
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import screen as screen_py
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import image as image_py
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def convert(screen: screen_py.DHGRScreen, rgb: np.ndarray, args):
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# Conversion matrix from RGB to CAM16UCS colour values. Indexed by
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# 24-bit RGB value
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base_dir = os.path.dirname(__file__)
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rgb24_to_cam16ucs = np.load(
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os.path.join(base_dir, "data/rgb24_to_cam16ucs.npy"))
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dither = dither_pattern.PATTERNS[args.dither]()
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bitmap = dither_dhr_pyx.dither_image(
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screen, rgb, dither, args.lookahead, args.verbose, rgb24_to_cam16ucs)
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# Show output image by rendering in target palette
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output_palette_name = args.show_palette or args.palette
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output_palette = palette_py.PALETTES[output_palette_name]()
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output_screen = screen_py.DHGRScreen(output_palette)
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if output_palette_name == "ntsc":
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output_srgb = output_screen.bitmap_to_image_ntsc(bitmap)
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else:
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output_srgb = image_py.linear_to_srgb(
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output_screen.bitmap_to_image_rgb(bitmap)).astype(np.uint8)
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out_image = image_py.resize(
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Image.fromarray(output_srgb), screen.X_RES, screen.Y_RES * 2,
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srgb_output=True)
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if args.show_output:
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out_image.show()
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if args.save_preview:
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# Save Double hi-res image
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outfile = os.path.join(
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os.path.splitext(args.output)[0] + "-preview.png")
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out_image.save(outfile, "PNG")
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screen.pack(bitmap)
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with open(args.output, "wb") as f:
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f.write(bytes(screen.aux))
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f.write(bytes(screen.main))
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