topic Re: JPEG Encode / Decode in Intel® Integrated Performance Primitives

JPEG Encode / Decode

macom2005 — Sat, 29 Jan 2005 05:29:47 GMT

Can somebody provide a Delphi sample for encoding and decoding jpeg images from to bitmaps ?

Re: JPEG Encode / Decode

macom2005 — Sun, 30 Jan 2005 22:15:58 GMT

Any help?

Re: JPEG Encode / Decode

macom2005 — Sun, 30 Jan 2005 22:16:17 GMT

Any help?

Re: JPEG Encode / Decode

seiji-torigoe — Mon, 31 Jan 2005 12:32:32 GMT

I worried, too.
I do not understand the algorithm of JPEG.
Therefore,
1. I made ijl20.dll by using VC in w_ipp-sample-jpeg_p_4.1.007.zip.
2. I am using ijl20.dll from delphi.

Re: JPEG Encode / Decode

macom2005 — Mon, 31 Jan 2005 16:27:23 GMT

I dont have VC but only Delphi. Can you email me the ijl20.dll ?

Re: JPEG Encode / Decode

macom2005 — Mon, 31 Jan 2005 23:49:48 GMT

I finally got the ijl20.dll compiled. Can someone provide me delphi header files ?

Re: JPEG Encode / Decode

seiji-torigoe — Tue, 01 Feb 2005 08:49:08 GMT

This is a delphi6 project.

Message Edited by Seiji-Torigoe on 01-31-2005 04:52 PM

Re: JPEG Encode / Decode

macom2005 — Wed, 02 Feb 2005 06:02:08 GMT

Thanks. That helps alot. I can compress / decompress now. But i wonder why reading jcprops.jprops.processor_type returns

ippCpuUnknown ?

On a Intel Centrino i should get ippCpuCentrino, right ?

Maybe i compiled the ijl20.dll in a wrong way. Can you send my your compiled version for testing ?

Re: JPEG Encode / Decode

seiji-torigoe — Wed, 02 Feb 2005 13:22:58 GMT

I corrected Test_IJL.zip.

Re: JPEG Encode / Decode

macom2005 — Thu, 03 Feb 2005 02:14:49 GMT

Thanks a lot. Any advises to speed up JPEG compression / decrompression with IJL ? Do you use the faster IPP functions also ?