README

Epeg 0.9.0

What is Epeg?

An IMMENSELY FAST JPEG thumbnailer library API.

Why write this? It is a convenience library API to using libjpeg to load
JPEG images destined to be turned into thumbnails of the original, saving
information with these thumbnails, retreiving it and managing to load the
image ready for scaling with the minimum of fuss and CPU overhead.

This means it is insanely fast at loading large JPEG images and scaling
them down to tiny thumbnails. Its speedup will be proportional to the size
difference between the source image and the output thumbnail size as a
count of their pixels.

It makes use of libjpeg features of being able to load an image by only
decoding the DCT coefficients needed to reconstruct an image of the size
desired. This gives a massive speedup. If you do not try to access the
pixels in a format other than YUV (or GRAY8 if the source is grascale),
then it also avoids colorspace conversions as well.

Please see the full documentation for Epeg for more details.