[Mono-dev] Image.PropertyItems empty with mono

Rafael Teixeira monoman at gmail.com
Tue May 22 11:52:57 UTC 2012

lbigdiplus, reads exif data for jpeg files, if it was compiled to use
libexif, as this extract from jpegcodec.c shows:

	if (st == Ok){
	    dstream_get_exif_buffer (loader, &ptr, &length);
	    load_exif_data (exif_data_new_from_data (ptr, length), *image);

I'm not sure if Mono is compiled for MacOSX with the libexif dependency,
which may be the cause of your problem.
>From libexif project page, seems that MacOSX doesn't provide libexif, per
se, you need to use Fink, or some other tool to add it manually, so...

A custom build of libgdiplus with libexif may solve your problem, but I
would rather explore some alternatives that may even avoid having to load
the full image in memory just to get the exif data, see:


Hope it helps,

Rafael "Monoman" Teixeira
"The most exciting phrase to hear in science, the one that heralds new
discoveries, is not 'Eureka!' (I found it!) but 'That's funny ...'"
Isaac Asimov
US science fiction novelist & scholar (1920 - 1992)

On Mon, May 21, 2012 at 4:24 PM, ChristianManthey <info at manthey-it.de>wrote:

> No, unfortunatly i did not find a solution so far and also did not get any
> response on how this could be solved.
> If you have an idea, please share it.
> Christian
> --
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