Re: [Chicken-users] imlib2 egg without X

[Peter Bex]

On Fri, May 19, 2006 at 09:33:43PM +0100, Ashish Shrestha wrote:
> On 5/19/06, Peter Bex <address@hidden> wrote:
> >
> > Maybe you can try
> >
> > ldd /usr/lib/libImlib2.so
>         linux-gate.so.1 =>  (0xffffe000)
>         libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0xb7e09000)
>         libz.so.1 => /lib/libz.so.1 (0xb7df0000)
>         libdl.so.2 => /lib/libdl.so.2 (0xb7dec000)
>         libm.so.6 => /lib/libm.so.6 (0xb7dc9000)
>         libc.so.6 => /lib/libc.so.6 (0xb7c9c000)
>         /lib/ld-linux.so.2 (0x80000000)

Looks like it doesn't depend on X.  I'll see if I can find the time to make
the imlib2 egg to compile without X.  (and implement a GC hook for destroying
imlib2 data while I'm at it)

> > Doesn't imlib2 handle exif?  If not, maybe it's a better idea to write a 
> > loader
> > for exif for imlib2.  That way everybody wins.
> No imlib2 doesn't handle exif. Don't understand you comment on
> creating a loader for exif for imlib2. Do you mean imlib2 egg or
> imlib2 the c library? I would rather use libexif if you mean the c
> library, however if you mean the a scheme version of exif library to
> include in imlib2 egg, yes I would be interested in doing that.

I meant creating a so-called "loader" for imlib2, the C library.  Loaders
are like "plugins".  All file formats imlib2 supports are implemented
through a loader.  Most loaders are quite simple interfaces
to existing image libraries (like libjpeg, libpng, libtiff etc)
Most of these are just a few hundred lines.  Check out src/modules/loaders
in the imlib2 source distribution.

Creating a new loader means all imlib2 programs automatically (without
ANY additional code) benefit from it, including Chicken programs which
utilize the imlib2 egg.  The egg doesn't even need to be updated!
I hope you agree this is the superior way to do this.

If you create a libexif egg, it means you have to conditionally use either
libexif calls for exif images or imlib2 calls for any other image format
in your program.

Regards,
Peter
-- 
http://sjamaan.ath.cx
--
"The process of preparing programs for a digital computer
 is especially attractive, not only because it can be economically
 and scientifically rewarding, but also because it can be an aesthetic
 experience much like composing poetry or music."
                                                        -- Donald Knuth

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