[Bug 779146] dmabuf: be able to negotiate tiled surfaces

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=779146

--- Comment #46 from Nicolas Dufresne (stormer) <nicolas at ndufresne.ca> ---
The mains problem remains the stride and other memory related. The thing that
comes out is that it's given back at allocation time. With this proposal, there
is no possible to fallback because GST does not have the knowledge. So
everything has to be in the caps (stride, size, alignment, number of memory
segment, etc) if you want any guarantee that the buffer exchange to work.
Allocating for every format to get the info make no sense and asking for API
will just never happen. So how do we make it work, not just sometimes and by
chance ?

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