Saludos Jose,
PNGwriter's main emphasis is on easy, lossless image processing. The
option of reading and/or writing JPEG files would be rather
tangential to its purpose (mainly inspired by PNGwriter's scientific
use, where lossy data formats are not suitable).
From a practical point of view, I would have to either write the
JPEG code myself, which is way out of my league, or use a library,
thus adding another dependency. I have chosen to keep the
dependencies to an absolute minimum, as I personally hate having to
download many dependencies for a simple library. This may not be an
issue now that PNGwriter has been included in a few main Unix/Linux
distros, but remember that PNGwriter is meant to as portable as
possible, and that, regrettably, incudes windows as well. If a Linux
user has a hard time installing a non-packaged source tarball,
including procuring all the dependencies, I can only imagine what
it's like for a windows user (not that I've ever been in that
situation, but I'm extrapolating).
So in short, JPEG support will probably never be added to PNGwriter.
There is a BMP reader/writer in progress, based almost entirely on
Siva Chandra's code, but unfortunately I haven't worked on that for
many months, and I don't know if it will see the light of day. Best
stick to PNG and use external tools to convert the image.
Suerte,
Paul
On 8 Oct 2005, at 12:19, Jose wrote:
Hi, Hola,
I'm new to the list. First of all, thank you for providing this
wonderful library.
One feature that would widely increase the appeal of the library is
the ability to import / export to jpeg.
In many cases, e.g. image processing the input image is in jpeg
altough it is ok to save it in png. In other cases the the input
image might be in jpeg/png but saving it in jpeg reduces the
storage cost. Do you think it makes sense to provide this feature ?
are there any plans for new features ?
Thanks, Gracias,
Jose
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