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https://github.com/jellyfin/jellyfin-mpv-shim.git
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54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
#!/usr/bin/env python3
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from io import BytesIO
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from PIL import Image
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def decompress_tiles(width, height, tile_width, tile_height, count, tiles, fh):
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image_count = 0
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for image in tiles:
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image = Image.open(BytesIO(image)).convert("RGBA")
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if height * tile_height != image.height or width * tile_width != image.width:
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raise ValueError("Tile size mismatch.")
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r, g, b, a = image.split()
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image_data = Image.merge("RGBA", (b, g, r, a)).tobytes()
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for y in range(tile_height):
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for x in range(tile_width):
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if image_count >= count:
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return
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image_count += 1
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for y_local in range(height):
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position = (
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y * height * width * tile_width * 4 # seek to correct row
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+ x * width * 4 # seek to correct column
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+ y_local * width * tile_width * 4 # seek to correct subrow
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)
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fh.write(image_data[position : position + width * 4])
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def decompress_bif(images, fh):
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height = None
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width = None
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image_count = 0
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for image in images:
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image_count += 1
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image = Image.open(BytesIO(image)).convert("RGBA")
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if height is None:
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height = image.height
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width = image.width
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else:
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if height != image.height or width != image.width:
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raise ValueError("BIF image sizes mismatch.")
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r, g, b, a = image.split()
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image = Image.merge("RGBA", (b, g, r, a))
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fh.write(image.tobytes())
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return {"count": image_count, "height": height, "width": width}
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