[Bug 770585] glupload: propose dma buffer pool upstream based on ion allocator

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=770585

--- Comment #6 from Haihua Hu <jared.hu at nxp.com> ---
(In reply to Matthew Waters (ystreet00) from comment #5)
> 
> Erm, that's not going to fly.  What should happen is that the bufferpool
> should fail setting the config with the unaligned size of which the easiest
> thing is to propose a separate pool with the ion allocator.  At which point
> it makes more sense to write a new upload method for ion than shoehorn this
> into the dmabuf allocator.
> 
> Another question, what hardware/software are you testing on?  Will this work
> on any hardware that supports ion?

You mean we need to implement a new buffer pool which is specific for ion
buffer and override _set_config() vmethod to make it fail to set the unaligned
size? As a result, we need to write a new uploader for ion dma-buf.

We are testing this plugin on imx soc for linux, this patch will be useful on
the platform which has ion support.

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