axl_bool vortex_frame_ref ( VortexFrame frame  ) 

Increases the frame reference counting.

The function isn't thread safe, which means you should call to this function from several threads. In is safe to call this function on every place you receive a frame (second and first level invocation handler).

Once you use this function, you can't call directly to vortex_frame_free. Instead a call to vortex_frame_unref is required.

Calling to vortex_frame_free when no reference count was increases is the same as calling to vortex_frame_unref. This means that code written against Vortex Library 0.9.0 (or previous) will keep working doing calls to vortex_frame_free.

frame The frame to increase its reference counting.
axl_true if the frame reference counting was increased. Otherwise, axl_false is returned and the reference counting is left untouched.