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Fixes #268

Fixes #273

Otherwise we would post a message, which calls into this code again and
then does the whole thing recursively forever.

It regularly fails in normal situations, e.g. when the element is not
inside a bin and has no bus, and we don't really want to log errors for
that.

This is more in line with the C API and simplifies callers in Rust.

They were side-stepping the miniobject writability mechanism.

Those are automatically provided already.

gobject-introspection does not support this yet so we have to do that
manually.

Fixes #271

And instead directly implementing this via the macro on the target
types.

And also make the video event API more consistent with the normal event
API.

Fixes #269

See !532 (comment 548884)

... and deprecate the `Query::new_*` forms.

... and deprecate the `Event::new_*` forms.

... and deprecate the `Message::new_*` forms.

Instead of taking a new reference to the pad.

Sounds more natural as it creates a build that is initialized *with* a
template.

But keep Pad::from_template() as it creates a new pad *from* a template.

This handles safely setting the pad functions during construction and
also has special support for ghost pads.

Fixes #247

That's generally not a good idea and not safe to do.

It's generally not safe to change the object name after construction and
not really a good idea.

This is not thread-safe and changing the function at a bad time will
cause crashes or worse. It's only really safe to set the functions right
after construction of the pad before any other code can know about it.

Fixes #247

No need to provide the field name if it's initialized with a variable of
the same name.

The idiomatic way for Rust constructors is to be named from_XXX()
instead of new_from_XXX() and with_XXX() instead of new_with_XXX().

Fix #460

Use re-export pattern from glib.

Fix #255

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.

Sebastian Dröge authored Jun 01, 2020 and Sebastian Dröge committed Jun 01, 2020

Including most debugging related functions.

Fixes #211