120 lines
4.0 KiB
Python
120 lines
4.0 KiB
Python
import os
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import sys
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from PIL import Image
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from processpalette import extractPaletteFromImage, palettes
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from args import args
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from assethelpers import getAssetRelativePath
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from assetcache import assetGetCache, assetCache
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images = []
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def processImage(asset):
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cache = assetGetCache(asset['path'])
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if cache is not None:
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return cache
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type = None
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if 'type' in asset['options']:
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type = asset['options'].get('type', 'PALETTIZED').upper()
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if type == 'PALETTIZED' or type is None:
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return assetCache(asset['path'], processPalettizedImage(asset))
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elif type == 'ALPHA':
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return assetCache(asset['path'], processAlphaImage(asset))
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else:
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print(f"Error: Unknown image type {type} for asset {asset['path']}")
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sys.exit(1)
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def processPalettizedImage(asset):
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assetPath = asset['path']
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cache = assetGetCache(assetPath)
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if cache is not None:
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return cache
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image = Image.open(assetPath)
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imagePalette = extractPaletteFromImage(image)
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# Find palette that contains every color
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for palette in palettes:
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if all(color in palette['pixels'] for color in imagePalette):
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break
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else:
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palette = palettes[0] # Just to avoid reference error
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print(f"No matching palette found for {assetPath}!")
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# Find which pixel is missing
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for color in imagePalette:
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if color in palette['pixels']:
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continue
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# Convert to hex (with alpha)
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hexColor = '#{:02x}{:02x}{:02x}{:02x}'.format(color[0], color[1], color[2], color[3])
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print(f"Missing color: {hexColor} in palette {palette['paletteName']}")
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sys.exit(1)
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print(f"Converting image {assetPath} to use palette")
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paletteIndexes = []
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for pixel in list(image.getdata()):
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if pixel[3] == 0:
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pixel = (0, 0, 0, 0)
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paletteIndex = palette['pixels'].index(pixel)
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paletteIndexes.append(paletteIndex)
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data = bytearray()
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data.extend(b"DPI") # Dusk Palettized Image
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data.extend(image.width.to_bytes(4, 'little')) # Width
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data.extend(image.height.to_bytes(4, 'little')) # Height
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data.append(palette['paletteIndex']) # Palette index
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for paletteIndex in paletteIndexes:
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if paletteIndex > 255 or paletteIndex < 0:
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print(f"Error: Palette index {paletteIndex} exceeds 255!")
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sys.exit(1)
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data.append(paletteIndex.to_bytes(1, 'little')[0]) # Pixel index
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relative = getAssetRelativePath(assetPath)
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fileNameWithoutExt = os.path.splitext(os.path.basename(assetPath))[0]
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outputFileRelative = os.path.join(os.path.dirname(relative), f"{fileNameWithoutExt}.dpi")
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outputFilePath = os.path.join(args.output_assets, outputFileRelative)
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os.makedirs(os.path.dirname(outputFilePath), exist_ok=True)
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with open(outputFilePath, "wb") as f:
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f.write(data)
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outImage = {
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"imagePath": outputFileRelative,
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"files": [ outputFilePath ],
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'width': image.width,
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'height': image.height,
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}
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return assetCache(assetPath, outImage)
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def processAlphaImage(asset):
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assetPath = asset['path']
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cache = assetGetCache(assetPath)
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if cache is not None:
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return cache
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print(f"Processing alpha image: {assetPath}")
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data = bytearray()
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data.extend(b"DAI") # Dusk Alpha Image
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image = Image.open(assetPath).convert("RGBA")
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data.extend(image.width.to_bytes(4, 'little')) # Width
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data.extend(image.height.to_bytes(4, 'little')) # Height
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for pixel in list(image.getdata()):
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# Only write alpha channel
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data.append(pixel[3].to_bytes(1, 'little')[0]) # Pixel alpha
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relative = getAssetRelativePath(assetPath)
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fileNameWithoutExt = os.path.splitext(os.path.basename(assetPath))[0]
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outputFileRelative = os.path.join(os.path.dirname(relative), f"{fileNameWithoutExt}.dai")
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outputFilePath = os.path.join(args.output_assets, outputFileRelative)
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os.makedirs(os.path.dirname(outputFilePath), exist_ok=True)
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with open(outputFilePath, "wb") as f:
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f.write(data)
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outImage = {
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"imagePath": outputFileRelative,
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"files": [ outputFilePath ],
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'width': image.width,
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'height': image.height,
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}
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return assetCache(assetPath, outImage) |