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PKM header format

Note: This was originally posted on 28th March 2012 at http://forums.arm.com

Hi,

I am having a texture compressed with pkm file format (ETC compression). I need to decode the pkm header to get the info like compression format, image width , height, mipmap levels , bits per pixel etc. Can some body point me to pkm header format?

Andrew Cox over 11 years ago

Note: This was originally posted on 2nd August 2013 at http://forums.arm.com

Hi Anthony,

Thanks for your definition of the format. But who originally specified it? Do you (or anyone) have a link to a canonical specification of the format?

Thanks!
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Andrew Cox over 10 years ago in reply to Andrew Cox

The PKM Format is Defined by Ericsson in the etcpack.cxx Source File
I looked around and found the format defined in the PKM loader and at the top of it's source file in Ericsson's texture compression tool which is here: https://labs.ericsson.com/research-topics/media-coding/ericsson-texture-compression-tool-v2-74?download_terms_js=1&download_terms_file=system/storage/serve/524/.
I can send the relevant bit directly if you (future reader of this page) contact me.
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Jeremiah Cauthorn over 8 years ago in reply to Andrew Cox

FYI, the source is no longer available at the previously linked location. It is now on GitHub at: https://github.com/Ericsson/ETCPACK
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PKM header format

The PKM Format is Defined by Ericsson in the etcpack.cxx Source File