GLMixer Code

Intermediate. Blackmagic use no longer crashes, but you can only allocate it once

Intermediate. deallocating no longre crashed but reallocating then does

Committing smaller changes, before fixing Blackmagic camera de-allocation crash

Cleanup code (patch from Preeteesh)

Blackmagic stuff

Minimum Blackmagic single camera input.

VERY EXPERIMENTAL!

It leaks memory like mad: Frames are not freed.

And closign the camera source object crashes.

BUT I'm checking in anyway because, well, it works :)

Minimum Blackmagic single camera input.

Testing the credential deletion

Changes by Ilias and by Bruno - only framework