topic Re: problems in ImageMagick in Intel® Integrated Performance Primitives

problems in ImageMagick

nemorino — Thu, 10 Sep 2009 07:11:50 GMT

I'm testing ipp-samples/image-codecs/ijg.
cjpeg, djpeg in utilites have no problem.
But, some problmes are happen in using ImageMagick with libjpeg.so.ipp

I have tested with convert in ImageMagick/utilities.

$ convert -resize 400x300 test.jpg testout.jpg
convert: Premature end of JPEG file 'test.jpg' @ jpeg.c/EmitMessage/226.

This problem is happen in any jpeg file.
What's wrong?

env : IPP6.1.1.042
gcc 3.4.6

Re: problems in ImageMagick

Vladimir_Dudnik — Thu, 10 Sep 2009 22:09:18 GMT

Please pay attention to how IPP is used in libjpeg. It requires custom jdatasrc.c and jdata dst.c file (usually an application part)

Regards,
Vladimir

Re: problems in ImageMagick

nemorino — Fri, 11 Sep 2009 00:41:56 GMT

Hmm.
I will see the files.
jdatasrc.c and jdata dst.c

Re: problems in ImageMagick

Chao_Y_Intel — Fri, 11 Sep 2009 07:00:54 GMT

Nemorino,

I tried IJG sample with some version of ImageMagic. The jpeg.c file in ImageMagick need to be changed (attached). It may depend on the version of imagemagic. You can search INTEL_IJG to find what was changed to accommodate IPP sample code.

Thanks,
Chao

Re: problems in ImageMagick

nemorino — Fri, 11 Sep 2009 09:46:01 GMT

Quoting - Chao Y (Intel)

Thanks a lot!!!
The problem is solved.