Hello all, I'd like to write a detection pipeline, i.e. a pipeline which does automated video-surveillance (motion detection, object classification, tracking, and so on). I think GStreamer could help me a lot: I need only to write some plugins that encapsulate the algorithms for automated video-surveillance. I've already read several documents: * GStreamer Application Development Manual * GStreamer Plugins Writer's Guide * Gstreamer Core Design Documentation * GObject Reference Manual and I've made some test. Now my problem: I would like to use the video-surveillance algorithms provided by OpenCV, which is a library for Computer Vision. The library is mostly written in C, except for the part I need for, which is in C++. OpenCV defines several C++ classes which do the job I need, but I don't know how to use them in my plugin: for my understanding, the plugin has to be written in the C programming language. Can I write a C++ plugin? How? I read I can use some sort of wrapping techniques to use C++ classes in C code (newer tried), but the C++ classes I need for use hierarchy and virtual methods (I think it is a problem, isn't it? Maybe I can do the magic whit GObject). Can anybody help me? Do you have some hint / useful link? Thanks a lot. Best regards, Giorgio Buffa