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Image metadata (was: imagemmagick patch 5)
From: |
Juri Linkov |
Subject: |
Image metadata (was: imagemmagick patch 5) |
Date: |
Tue, 30 Mar 2010 19:12:31 +0300 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (x86_64-pc-linux-gnu) |
>>>> it returns a raw representation of the extension data of a given
>>>> (sub)image.
>>> Again, what is meant by "extension" here?
>> It seems the term "extension" is GIF-specific. The GIF specification says
>> that extension blocks "extend" the 87a definition to allow extensions like
>> the Graphic Control Extension that specifies the animation delay time, etc.
>
>> The parameter `count' is used in animation, but unrelated to "extension".
>> Perhaps a more common term for `count' would be "metadata".
>
> Then we should rename image-extension-data to image-metadata, I think.
The problem is that one part of the current `image-extension-data'
is metadata, and another part is extension data. For instance, in
(count 44
255 "NETSCAPE2.0"
0 "address@hidden@"
249 "address@hidden"
)
`count 44' is metadata, and the rest (with non-descriptive numeric keys)
is extension data.
Maybe the list returned by the new function `image-metadata' should be like:
(count 44
extension-data (255 "NETSCAPE2.0"
0 "address@hidden@"
249 "address@hidden")
)
--
Juri Linkov
http://www.jurta.org/emacs/
- imagemmagick patch 5, joakim, 2010/03/03
- Re: imagemmagick patch 5, Juri Linkov, 2010/03/03
- Re: imagemmagick patch 5, joakim, 2010/03/03
- Re: imagemmagick patch 5, Juri Linkov, 2010/03/06
- Re: imagemmagick patch 5, Stefan Monnier, 2010/03/06
- Re: imagemmagick patch 5, Juri Linkov, 2010/03/06
- Re: imagemmagick patch 5, Stefan Monnier, 2010/03/07
- Re: imagemmagick patch 5, Juri Linkov, 2010/03/07
- Re: imagemmagick patch 5, Stefan Monnier, 2010/03/07
- Re: imagemmagick patch 5, Kim F. Storm, 2010/03/13
- Image metadata (was: imagemmagick patch 5),
Juri Linkov <=
- Re: Image metadata, Stefan Monnier, 2010/03/30
- Re: Image metadata, Juri Linkov, 2010/03/30
- Re: Image metadata, Stefan Monnier, 2010/03/30
Re: imagemmagick patch 5, Stefan Monnier, 2010/03/05