[Qemu-devel] Re: [RFC] qemu-gui based on wxWidgets and libvncclient

[Anthony Liguori <aliguori@cs.utexas.edu>]

Fabrice Bellard wrote:
> Anthony Liguori wrote:
> 
>> I have no experience with libvncclient.  I think the general idea of 
>> using VNC to create an external QEMU GUI is a good one.  Previously, I 
>> had posted some patches for a shmem GUI that used a custom control 
>> channel.  After hacking on that for a little bit based on some 
>> feedback, I've come full circle and am now under the view that 
>> extending VNC is a better long term approach.
>>
>> So, I've reserved some pseudo-encodings and a client message type and 
>> am now working on some VNC extensions to enable better QEMU integration.
>>
>> My current client code is available at:
>>
>> http://hg.codemonkey.ws/vnc-gui/
>>
>> The VNC extensions are still a work in progress but documentation is 
>> here:
>>
>> http://tocm.wikidot.com/vncextensions
> 
> I think this is a good idea. First one detail: for Pointertypechange, it 
> would be better to use the value 32768 as 0 instead of 32767 or to use a 
> 16 bit two complement value.

Changing the U16's to S16's is a really good idea.  I'll make the change.

> Another point is that you should consider adding audio support. I can 
> help you on that (maybe malc would be interested too !). A simple format 
> could be 4 bit ADPCM at fixed frequency. Optionally A more advanced 
> codec such as Vorbis could be used.

I know very little about audio so help would be appreciated.  I
currently have 16 pseudo-encodings and a client/server message reserved
so we have ample room to extend VNC.

Regards,

Anthony Liguori

> Regards,
> 
> Fabrice.