* extension data
* onebyte/twobytes extension
* ssrc
* csrc
* get_payload

Mention (and link to) the known issue about the MSYS2 version of pkg-config.

Static variables in generic functions only exist once and not once per
type parameter, so before we were only able to register exactly one
filter type.

The meta contains a Rust String as a label for the buffer. It is added
on buffers passed into an appsrc and retrieved from the buffers provided
by an appsink.

Also add AUDIO_FORMATS_ALL as public API.

Also add VIDEO_FORMATS_ALL as public API.

There's a heuristic in the code generator to base the version on the
functions' versions if the type itself has none, simply because too many
libraries get this wrong. Let's override that here.

Will be needed to bind the new webrtc APIs.

Fixes #218

Will be needed to bind the new audio and video caps APIs.

Including most debugging related functions.

Fixes #211

An older version is pulled in by the OpenGL example via glutin, and it
would have to be updated to a newer version of glutin to fix this. See
!409

Replicate the pango-cairo cairooverlay example, but
drawing into a gst::VideoOverlayComposition using the
overlaycomposition element.

Configure some custom cropping / scaling of a video frame
input to compositor via the converter-config property
and gst_video::VideoConverterConfig API.

Add an example of constructing and parsing a custom event using
a rust helper struct, and sending them / catching them in
a pipeline.

Prevents an usually unneeded copy of the structure.

gstreamer/promise: Allow resolving the Promise with None and handle None explicitly in the change function

See gst-plugins-bad#1300

For SDPMessageRef, StructureRef and CapsFeatureRef this involves the
conversion from and to a glib::Value. Specifically this means that e.g.
a StructureRef can be retrieved from a glib::Value via borrowing, i.e.
without creating a copy of the structure first.

For all mini objects only retrieval from a glib::Value is implemented as
the other direction would allow to get multiple immutable references
from a mutable reference without borrowing, which is not allowed and
would make it possible to observe a mini object changing while having an
immutable reference to it.

webrtcbin likes to put a NULL structure into the reply under some
circumstances when the promise successfully resolved.

See gst-plugins-bad#1300
for details.

video/videoinfo: Use a proper error type in the TryFrom<VideoMultiviewMode> impl for VideoMultiviewFramePacking

Allows converting between both types interchangebly.

Don't include LGPL docs in the docs if both embed-lgpl-docs and purge-lgpl-docs features are selected

This makes usage of RLS/rust-analyzer on the repository much faster and
less annoying as the docs don't have to be included and removed on every
change.