Re: [GM-help] C-API, Wand, MagickGetImageProfile and EXIF-Data

[Bob F. <bfr...@si...>]

On Tue, 5 Sep 2017, Manfred Rebentisch wrote:

> Hello,
> I found libexif to handle the result of MagickGetImageProfile. Is that
> the way to go?

GraphicsMagick supports decoding and retreiving many EXIF values (see 
documentation for -format in the gm utility documentation), but 
only supports updating one or two parameters (e.g. orientation).

As long as libexif supports decoding and encoding EXIF blobs then it 
may be a good way to go.  The EXIF blob ('profile') can then be 
replaced.

>> The poor documentation tells:
>>
>> 	name:
>> 	  Name of profile to return: ICC, IPTC, or generic profile.

The documentation is not necessarily poor.  It is not replicated again 
at every interface appearance.  The gm utility documentation can help 
quite a lot with understanding the C, C++, Perl, Tcl, etc., 
interfaces.

This project is staffed entirely by unpaid part time volunteers.  The 
project can be improved by submissions from additional volunteers.

Bob

-- 
Bob Friesenhahn
bfr...@si..., http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/