Is exr support possible in Winrt or uwp apps

asked 2018-03-29 18:53:18 -0500

Trying to build opencv for a UWP app, the cmake process to make the binaries has configurations similar to a winrt app. I can't seem to make it so EXR support is built into those opencv binaries. Is it possible?

We have explicitly a line where WITH_OPENEXR is turned off if it's WinRt, so it hints towards some possible missing API in WinRt. I tried commenting that condition to see what happened, and while I got the cv::getBuildInformation() to say: OpenEXR: build (ver 1.7.1) , my matrices have still null data after reading the exr file. Same code used for non Winrt configuration is working fine.

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support for exr is compiled into the opencv libs at build time.

so, if you don't recall building opencv libs from src and explicitly enabling exr -- you probably won't have it.

berak gravatar imageberak ( 2018-03-30 01:01:56 -0500 )edit

I'm building the opencv libs, but there's a check for winrt in order to enable exr support. Even if I artificially overpass that check, the support does not work, leading me to believe it's not possible to have exr support. I'd like to know a confirmation of that or if someone knows how, the steps to enable it.

I've found the PR that added the support for WINRT in opencv, you can look for WITH_OPENEXR and see how they skip to turn that flag for those systems.

josguil gravatar imagejosguil ( 2018-03-30 13:58:06 -0500 )edit