[Spice-devel] celt 0.5.1 dependency of spice

[Christophe Fergeau]

On Mon, May 09, 2011 at 12:14:52PM +0300, Alon Levy wrote:
> On Mon, May 09, 2011 at 11:04:47AM +0200, Christophe Fergeau wrote:
> > Hi,
> > 
> > On Sun, May 08, 2011 at 03:38:17PM +0300, Alon Levy wrote:
> > > This problem has been raised multiple times on the list, you should read the
> > > archives. To recap: historically when spice had to choose a codec it chose the
> > > current celt then, 0.5.1. That celt is not compatible with newer celts. The
> > > decision was to wait for celt's on wire format to stabilize. This hasn't happened
> > > yet (perhaps it will happen soon). It is however possible to introduce support
> > > for multiple codecs and have the client and server negotiate. This will still not
> > > allow a celt 0.10.0 linked spice server to connect to celt 0.5.1 client, or vice
> > > versa.
> > 
> > Celt 0.11.1 release announcement says
> > "CELT 0.11.0 (originally not announced) and 0.11.1 has been released with a
> > focus on freezing the bit-stream and updating the API. The bit-stream is
> > now in "soft-freeze" state meaning there is an attempt to keep it fixed,
> > but some bugs may force changes" so if some codec negociation was
> > introduced, I'd target celt 0.11.1+ (explicitly noting that celt 0.11.1+
> > support may be broken at any time if celt bitstream format has to change
> > before it's officially frozen).
> 
> If we add the negotiation logic we can later add a third celt version

Maintaince-wise, supporting celt 0.5.1 and celt "bitwise-stable" is already
1 version too much, so it would be better to avoid having a 3rd one to
maintain ;)

Christophe
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