Viewport resolution scale parameter

[christianstamati]

Relevant components:

• Signalling server
• Common library
• Frontend library
• Frontend UI library
• Matchmaker
• Platform scripts
• SFU

Problem statement:

When connecting from an iPhone or small screen device with MatchViewportRes set to true, the rendered resolution appears quite low, causing the visuals to look slightly pixelated.

More info here: #721

Solution

Added a new numeric parameter ViewportResolutionScale that multiplies the resolution dimensions sent to the onMatchViewportResolutionCallback when MatchViewportResolution is enabled. The scale factor is applied to both width and height in VideoPlayer.updateVideoStreamSize(), allowing users to request higher resolution streams (e.g., 1.5x or 2.0x) to improve visual quality on small screens.

Documentation

The new ViewportResolutionScale parameter is documented in Frontend/Docs/Settings Panel.md under the UI section.

Test Plan and Compatibility

Existing unit tests: Config.test.ts automatically covers the new parameter via the "should populate initial values for all settings" test (line 42-49), which validates all numeric parameters are registered

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Latest commit: a485192

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