imghdr -- identify JPEGs in EXIF format

[staschuk]

BPO	751031
Nosy	@rhettinger
Files	jpeg-exif.patch

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

Show more details

GitHub fields:

assignee = 'https://github.com/rhettinger'
closed_at = <Date 2005-01-07.08:15:58.000>
created_at = <Date 2003-06-08.20:08:39.000>
labels = ['library']
title = 'imghdr -- identify JPEGs in EXIF format'
updated_at = <Date 2005-01-07.08:15:58.000>
user = 'https://bugs.python.org/staschuk'

bugs.python.org fields:

activity = <Date 2005-01-07.08:15:58.000>
actor = 'rhettinger'
assignee = 'rhettinger'
closed = True
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2003-06-08.20:08:39.000>
creator = 'staschuk'
dependencies = []
files = ['5349']
hgrepos = []
issue_num = 751031
keywords = ['patch']
message_count = 2.0
messages = ['43918', '43919']
nosy_count = 2.0
nosy_names = ['rhettinger', 'staschuk']
pr_nums = []
priority = 'low'
resolution = 'fixed'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue751031'
versions = ['Python 2.4']

[staschuk]

Someone posted to c.l.py [1] about some of their JPEGs not
being identified as such by imghdr. Turns out they were
EXIF files, and imghdr only identifies JFIF files. A little web
research suggests EXIF is the usual format for JPEGS from
digital cameras.

The patch adds the ability to identify such files; they are
reported as 'jpeg-exif'. I've no idea whether this is the
Right Thing.

[1] http://groups.google.com/groups?th=45c0442a1d74e9c4

[rhettinger]

Logged In: YES
user_id=80475

Added Exif detection to Py2.5. See Lib/imghdr.py 1.12

Exif is JFIF style coding where the APP1 marker has been
added with extra information (thumbnail image and shooting
data.)

For a good overview of the coding, see:
http://park2.wakwak.com/~tsuruzoh/Computer/Digicams/exif-e.html