[Bug 736896] [REGRESSION] pygobject 3.13 now copies the GstStructure when getting them from a GstCaps, making it impossible to properly modify structures from caps in place.

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=736896

--- Comment #29 from Christoph Reiter (lazka) <reiter.christoph at gmail.com> ---
Regarding the owner object:

If we'd have some notion of an "owner object" that might work, but something
like that doesn't exist in GI afaik.

You could emulate it by having a proxy buffer object which takes a ref on the
owner and has methods which allow modifying the buffer.

proxy = object.get_proxy_buf()
proxy.change() # proxy has a ref on object internally and
               # has just a pointer to the real buffer
buf = proxy.get_buf()

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