Merge pull request #8266 from andrewvoznytsa/PR-qmlglsink-v2

src/VideoStreaming/VideoSurface.cc

src/VideoStreaming/VideoSurface.h

src/VideoStreaming/VideoSurface_p.h

src/VideoStreaming/gstqtvideosink/delegates/basedelegate.cpp

src/VideoStreaming/gstqtvideosink/delegates/basedelegate.h

...ng/gstqtvideosink/delegates/qtquick2videosinkdelegate.cpp

...ming/gstqtvideosink/delegates/qtquick2videosinkdelegate.h

...treaming/gstqtvideosink/delegates/qtvideosinkdelegate.cpp

...oStreaming/gstqtvideosink/delegates/qtvideosinkdelegate.h

...ing/gstqtvideosink/delegates/qwidgetvideosinkdelegate.cpp

...aming/gstqtvideosink/delegates/qwidgetvideosinkdelegate.h

src/VideoStreaming/gstqtvideosink/gstqtglvideosink.cpp

src/VideoStreaming/gstqtvideosink/gstqtglvideosink.h

src/VideoStreaming/gstqtvideosink/gstqtglvideosinkbase.cpp

src/VideoStreaming/gstqtvideosink/gstqtglvideosinkbase.h

src/VideoStreaming/gstqtvideosink/gstqtquick2videosink.cpp

src/VideoStreaming/gstqtvideosink/gstqtquick2videosink.h

src/VideoStreaming/gstqtvideosink/gstqtvideosink.cpp

src/VideoStreaming/gstqtvideosink/gstqtvideosink.h

src/VideoStreaming/gstqtvideosink/gstqtvideosinkbase.cpp