[Bug 694804] bufferpool: No way to override acquire_buffer to chose a sensible buffer

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=694804
  GStreamer | gstreamer (core) | git

--- Comment #6 from Sebastian Dröge <slomo at circular-chaos.org> 2013-03-13 10:28:50 UTC ---
(In reply to comment #5)

> > I don't see how we could allow subclasses to do anything useful in acquire
> > without making the pool not-atomic.
> 
> some options:
> 
> - You override the acquire, release and stop methods and take a buffer from
>   your own queue/array/whatever you use to implement the pool. We need to make
>   do_alloc_buffer() public.

That would be possible, yes.

> - Implement a method to iterate the queue buffers to filter out a buffer that
>   you want.

I don't think that's possible with the atomic queue without making it
non-atomic.

> What exactly would you want to do with the buffers from atomic queue?

In gst-omx I need to acquire a very specific buffer from the pool.

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