* Don't mention explicitly that API is MT safe, this implies that
other API is not. GStreamer API is assumed to be MT safe, thread
safety should only be explicitly mentioned when API is *not* MT safe
* Document virtual methods in standalone comments, in order to properly
annotate them
* Don't repeat what annotations are stating with respect to ownership
transfer, nullability
* Misc cleanup / typo fixes / addition of links
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/755>
Support for (nullable) was added to G-I at the same time as nullable
return values. Previous versions of G-I will not mark return values as
nullable, even when an (allow-none) annotation is present, so it is
not necessary to add (allow-none) annotations for compatibility with
older versions of G-I.
https://bugzilla.gnome.org/show_bug.cgi?id=730957
This is equal to any other caps features but results in unfixed caps. It
would be used by elements that only look at the buffer metadata or are
currently working in passthrough mode, and as such don't care about any
specific features.
These are meant to specify features in caps that are required
for a specific structure, for example a specific memory type
or meta.
Semantically they could be though of as an extension of the media
type name of the structures and are handled exactly like that.
