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28 lines
679 B
Python
28 lines
679 B
Python
from enum import Enum
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class ImageFormat(Enum):
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Png = 1
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Jpg = 2
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Webp = 3
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Svg = 4
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Unknown = 9
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magic_numbers = {
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ImageFormat.Png: bytes([0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A]),
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ImageFormat.Jpg: bytes([0xFF, 0xD8, 0xFF, 0xE0]),
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ImageFormat.Webp: bytes([0x52, 0x49, 0x46, 0x46]),
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ImageFormat.Svg: bytes([0x3C, 0x3F, 0x78, 0x6D, 0x6C]), # <?xml
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}
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def detect_image_format(image: bytes) -> ImageFormat:
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# Detect image based on magic number
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for fmt, header in magic_numbers.items():
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if image.startswith(header):
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return fmt
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# Detect if is svg
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# We don't know the type
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return ImageFormat.Unknown
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