jpeg 12 bit support

[kjurka]

The jpeg12 plugin appears to use a hacked up version of libjpeg turbo (to avoid symbol conflicts with 8 bit jpeg support). Is this version available anywhere? Build scripts indicate it is available here, but it's not publicly accessible:

https://s3.amazonaws.com/ossimlabs/dependencies/source/libjpeg12-turbo-1.4.2.tgz

libjpeg-turbo just recently added the ability to build jpeg12 as a separate library that doesn't conflict with 8 bit jpeg. This hasn't been released yet, but is there any interest in migrating to this API for 12 bit jpeg?

libjpeg-turbo/libjpeg-turbo#199 (comment)

[lewj85]

Any chance of making that libjpeg12-turbo-1.4.2.tgz file available for others? I need it for my current project.

[dburken]

libjpeg-turbo supports 12 bit data. What needs to happen is tweak the ossimJpegTileSource::fillTile(...) and ossimNitfTileSource::uncompressJpegBlock(...) methods to handle bit depths other than 8.