[Bug 773073] audioconvert: endian conversion optimization

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=773073

--- Comment #11 from Petr Kulhavy <brain at jikos.cz> ---
(In reply to Sebastian Dröge (slomo) from comment #5)

> > 2) The base transform class still allocates buffers for audioconvert, which
> > is no longer needed. How can I tell it the conversion can be done in place
> > and no output buffer is needed?
> 
> You need to enable in place transformation for that:
> gst_base_transform_set_in_place().

This is a bit more complex than just that. GstAudioConvert implements only
_transform and no _transform_ip. So first _transform_ip needs to be
implemented. What is a good example of _transform_ip ? It would improve also
signed-unsigned conversion.

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