Playing with JPEG on ARM9 120MHz

I downloaded libjpeg from and crosscompiled to my camera (ARM9 @ 120MHz) and started playing with JPEG decoding (djpeg application). Initially it was delaying 2.8s to convert, then I tested some parameters to improve it a little bit:

# time ./djpeg -fast -dct fast -nosmooth -onepass -grayscale tigre-fractal.jpg > tigre3.bmp
real    0m 0.88s
user    0m 0.83s
sys     0m 0.05s

More info about JPEG: