Re: Loading a EXIF thumbnail with Gtk2::Gdk::Pixbuf->new_from_data

[Johnny Morano <jmorano moretrix com>]

Hi,

> Welcome.  We'll try to make the hazing light.

Yeah, don't we just all love the haze... ;-)

> According to http://park2.wakwak.com/~tsuruzoh/Computer/Digicams/exif- 
> e.html#ExifThumbs the thumbnail will be JPEG or TIFF, not raw bits.

oops..

> Do this, instead:
> 
>    my $loader = Gtk2::Gdk::PixbufLoader->new;
>    $loader->write ($data);
>    $loader->close ();
>    my $pixbuf = $loader->get_pixbuf ();
> 
> (That code is from memory, check for yourself to make sure i'm not  
> telling lies.)

i'd say: memory++ ! the above code works like a charm! man, the thumbs
are loaded fast now :-/ supah!

> There's new_from_file_at_size(), which uses a PixbufLoader to scale  
> the image as it reads each chunk.  But, this is still slower than  
> using the precomputed thumbnail.

jep... i already discovered that one :-)

> That's referring to how to create image data in your script.  The  
> image data is expected to be a flat buffer of pixel data, and to  
> manipulate the contents of such a thing in perl, you need to use pack 
> ().  If you have packed data returned from some other source, you  
> have no further work to do.

ah... thought so, but, I've just started playing with gtk2-perl last
week ;-)

yeah, my exiftool is starting to work nicely (and fast!) ;-)

Cheers and thanks a heap!
J
-- 

Johnny Morano | insaniac moretrix com | +32.473 894685
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