Q: metadata (frame tags) preservation

[Philippe De Muyter]

Hi all,

I have read that since the 1.6 version of gstreamer, frame tags are preserved
by each plugin.  My questions below are targeted at memory- and frame-size-
independent tags, such as gps data, exposure, gain that could vary from frame
to frame, and so on.

- Is the preservation mechanism implemented outside of the plugins, or must
it be implemented in each plugin ? In that case, is a generic preservation code
available, that we could add e.g. to gstreamer-imx (imx hardware accelerated)
plugins ?

- Is there a refcount accessible when defining the free function for a new
metadata type, to avoid that one branch after a 'tee' destroys a metadata
that's still used by the other branch ?

Thanks in advance

Philippe

-- 
Philippe De Muyter +32 2 6101532 Macq SA rue de l'Aeronef 2 B-1140 Bruxelles