I installed ipp samples (7.1.1) correctly. And, I used UIC examples.
It works fine for only certain images. To be exact, it only worked for the images encoded using UIC.
For example, I had few "jpeg" images, and then using the IPP UIC tool, I enocded them to "jp2" format. Then I used the generated "jp2" format to convert it to different formst (e.g. "bmp", "png" or even back to "jpeg"). And they all worked fine.
But, then I tried to compare the performance with j2k-codec. So, since I had worked with j2k-coded before, I have bunch of "jp2" files, from past.
But, when I tried to use my old files (which had worked fine on "j2k-codec before), they didn't work with IPP UIC !!!
Those files that I tested, had actually been encoded by different tools; but they all are valid encoded streams and all can get decoded fine with j2k-codec.
I know that these files, are encoded fine, because I am able to open all these files with Photoshop.
I am uploading few of these files. And, I would appreicate if someone tells me whether this is a limmiation of IPP UIC, or I am missing something.