Hi Vladimir,

I attach my test projects for you to look into.

The project "IPP-JPEGdecode" uses IPP 5.3 JPEG codec.
I have also provided the executable: IPP-JPEGdecode.exe.

The project "IPP-IJL15-20-compare" uses IJL15 or IJL20.
I have also provided the executables: IPP-IJL15.exe and IPP-IJL20.exe

I have also provided the test image.
I have not provided any Intel files. If you need any of them just let me know.

I have tested on three different computers with about the same setup:
OS: MS Win XP Pro V.2002, SP 2 (5.1 build 2600)
Platform: Intel Pentium D CPU 3.40 GHz (2 CPUs), 2 GB RAM

The result is the same on all machines. IJL15 is fastest and JPEG codec is slowest:
IJL15: 13.5 ms per picture (50% CPU usage, 100% of one core)
IJL20: 14.5 ms per picture (50% CPU usage, 100% of one core)
JPEG codec: 20 ms per picture (100% CPU usage, 100% of each core)

So, in my test "JPEG codec" is actually much slower since it uses 100% of two cores, while IJL only uses 100% of one core...!

Also, the colors is inverted or something in the images produced by the IPP JPEG Codec. Maybe this is a hint to what's wrong!?

Please let me know if you need anything else from me!

Br,
Robert