yt-dlp/yt_dlp/compat/imghdr.py
pukkandan 5792c950bf
[compat] Implement compat.imghdr
Python 3.11 deprecates `imghdr` module
2022-05-17 19:46:01 +05:30

14 lines
480 B
Python

tests = {
'webp': lambda h: h[0:4] == b'RIFF' and h[8:] == b'WEBP',
'png': lambda h: h[:8] == b'\211PNG\r\n\032\n',
'jpeg': lambda h: h[6:10] in (b'JFIF', b'Exif'),
}
def what(path):
"""Detect format of image (Currently supports jpeg, png, webp only)
Ref: https://github.com/python/cpython/blob/3.10/Lib/imghdr.py
"""
with open(path, 'rb') as f:
head = f.read(12)
return next((type_ for type_, test in tests.items() if test(head)), None)