Viewer: Improve compression level controls

[dcommander]

I think it would be a good idea to borrow from some of the experimental enhancements I made to the noVNC GUI (https://github.com/dcommander/noVNC) and change the TurboVNC Viewer options dialog such that it behaves similarly vis-a-vis setting the compression level. Specifically, I would propose to make the Compression Level widget into a combo box rather than a slider, and change the "Interframe" check box into a boolean option that allows one to enable the equivalent of the "CompatGUI" command-line parameter. If CompatGUI is true, then the compression level combo box would show all 10 options:

• 0 (none)
• 1 (minimal)
• ...
• 9 (extreme)

If CompatGUI is false and JPEG is enabled, then the compression level combo box would show the following options:

• 0 (no Zlib) [not selectable]
• 1 (minimal)
• 2 (medium)
• 3 [not selectable]
• 4 [not selectable]
• 5 [not selectable]
• 6 (CL 1 + interframe comparison)
• 7 (CL 2 + interframe comparison)
• 8 [not selectable]
• 9 (extreme)

If CompatGUI is false and JPEG is disabled, then the compression level combo box would show the following options:

• 0 (no Zlib)
• 1 (minimal)
• 2 [not selectable]
• 3 [not selectable]
• 4 [not selectable]
• 5 (CL 0 + interframe comparison)
• 6 (CL 1 + interframe comparison)
• 7 [not selectable]
• 8 [not selectable]
• 9 (extreme)

[dcommander]

Unfortunately have to push this to TurboVNC 2.3.

[al3x609]

specs: nvidia grid k2, centOS,
network latency 50ms
bandwidth network 10Mbps
wifi

Hi, I want to show you this preview test, from my project.

A remote visualization HPC CaaS , containers as a service, on a cluster.

turbovnc/virtualgl
noVNC
ssh tunel ( only for test, not in production= nginx reverse proxy)
slurm WM.
singularity containers.
the perfomance is good, pero maybe will be better.
maybe:

• level controls for low latency and hight bandwidth
• nginx or apache image compression.
• cache on client side.
• H.264 hardware codification
• UDP over websockets/tcp
• decoding approach webGL/vnc, :S

what do you think about that?
your advice will be well received