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[mhtml, cleanup] Use imghdr

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pukkandan 2022-07-31 01:29:02 +05:30
parent 6a7d3a0a09
commit b4daacb4ec
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2 changed files with 9 additions and 14 deletions
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12
yt_dlp/compat/imghdr.py
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@ -2,13 +2,15 @@ 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'),
'gif': lambda h: h[:6] in (b'GIF87a', b'GIF89a'),
}
def what(path):
"""Detect format of image (Currently supports jpeg, png, webp only)
def what(file=None, h=None):
"""Detect format of image (Currently supports jpeg, png, webp, gif 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)
if h is None:
with open(file, 'rb') as f:
h = f.read(12)
return next((type_ for type_, test in tests.items() if test(h)), None)

11
yt_dlp/downloader/mhtml.py
View file

@ -4,6 +4,7 @@ import re
import uuid
from .fragment import FragmentFD
from ..compat import imghdr
from ..utils import escapeHTML, formatSeconds, srt_subtitles_timecode, urljoin
from ..version import __version__ as YT_DLP_VERSION
@ -166,21 +167,13 @@ body > figure > img {
continue
frag_content = self._read_fragment(ctx)
mime_type = b'image/jpeg'
if frag_content.startswith(b'\x89PNG\r\n\x1a\n'):
mime_type = b'image/png'
if frag_content.startswith((b'GIF87a', b'GIF89a')):
mime_type = b'image/gif'
if frag_content.startswith(b'RIFF') and frag_content[8:12] == b'WEBP':
mime_type = b'image/webp'
frag_header = io.BytesIO()
frag_header.write(
b'--%b\r\n' % frag_boundary.encode('us-ascii'))
frag_header.write(
b'Content-ID: <%b>\r\n' % self._gen_cid(i, fragment, frag_boundary).encode('us-ascii'))
frag_header.write(
b'Content-type: %b\r\n' % mime_type)
b'Content-type: %b\r\n' % f'image/{imghdr.what(h=frag_content) or "jpeg"}'.encode())
frag_header.write(
b'Content-length: %u\r\n' % len(frag_content))
frag_header.write(