Extensions for fine-grained image quality control

2009-08-26 Thread DRC
Hi. I run the VirtualGL Project, which produces a TightVNC derivative called TurboVNC. I am also involved with the next generation TigerVNC Project, which aims to replace both. TurboVNC has been unofficially using the following extensions to the RFB protocol, and I wanted to see if I could make

Re: Extensions for fine-grained image quality control

2009-09-03 Thread DRC
Adam Tkac wrote: > There is a bug report about creation of the separate JPEG encoding - > http://sourceforge.net/tracker/?func=detail&aid=2674740&group_id=254363&atid=1126849. > > If we are really going to create new JPEG encoding and document it > in the RFB protocol we should not create separate

Re: Extensions for fine-grained image quality control

2009-09-03 Thread DRC
Adam Tkac wrote: > If I understand correctly you are proposing separate messages (with > "messages" I mean multiple rectangles with different encodings) for > JPEG and quality levels. Communication client<->server will look like: > > client->serverJPEG encoding is supported > server->client

Re: Extensions for fine-grained image quality control

2009-09-03 Thread DRC
James Weatherall wrote: > [snip] > > FYI, this sounds very similar to what the standard TRLE encoding already does. > I haven't seen TRLE and can't seem to find any information on that protocol. Is it available in a current release of RealVNC? One of the problems I ran into with Hextile, in pa

Re: Extensions for fine-grained image quality control

2009-09-03 Thread DRC
Adam Tkac wrote: > If TurboVNC uses this mechanism long time then it's a good idea to > prevent someone from using them. But I would like to see a comment > that those encodings should not be used in new implementations. Is it > acceptable for you? > Yes, that's acceptable. ___

Re: Extensions for fine-grained image quality control

2009-09-07 Thread DRC
I'm just reporting what I observed. I don't really know the underlying reasons behind it, either. I see the same effect with the Tight protocol. I can't get peak performance out of that protocol with tile sizes less than 64 kpixels. On Sep 7, 2009, at 8:23 AM, "James Weatherall" wrote > I'm