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 Adam Tkac
On Wed, Sep 02, 2009 at 05:09:44PM -0500, DRC wrote: > 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 d

RE: Extensions for fine-grained image quality control

2009-09-03 Thread James Weatherall
Hi DRC, [snip] > > Unfortunately I don't think we can extend the Tight encoding. You > > should discuss this change with Constantin. > > > I'm not sure I understand how this works. Can someone enlighten me as > to how RFB extensions are registered and conflicts are avoided? If > there is no offi

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 Adam Tkac
On Thu, Sep 03, 2009 at 06:04:59AM -0500, DRC wrote: > 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: > > > >

RE: Extensions for fine-grained image quality control

2009-09-03 Thread James Weatherall
Hello again DRC, [snip] > It enables a particular lossless mode whereby paletted encoding is used > for low-color-depth tiles and uncompressed raw pixels are sent for > high-color-depth tiles. This is used in TurboVNC 0.5 as a much faster > (and generally lower bandwidth) alternative to Raw and H

RE: Extensions for fine-grained image quality control

2009-09-03 Thread James Weatherall
Adam, [snip] > AFAIK the Tight encoding is a mechanism to encapsulate other > encodings thus you end with something like a "protocol inside > protocol" (The Tight encoding already has many sub-encodings like > FTP-like transfer related encodings and the JPEG encoding as you wrote > above). I reall

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. ___