Retroplayer Stretch Mode on Raspberry Pi

[zach-morris]

Bug report

Describe the bug

Here is a clear and concise description of what the problem is:

There are a few reports from RPi users that changing the 'Stretch Mode' (Aspect Ratio) when using retroplayer can lead to an overall aspect ratio setting in Kodi that causes most everything to be offscreen. After this setting is applied, because everything is offscreen, the user can't reset the mode to something that works.
Reference:
zach-morris/plugin.program.iagl#234
https://forum.kodi.tv/showthread.php?tid=332966&pid=3108738#pid3108738

Expected Behavior

Here is a clear and concise description of what was expected to happen:

The stretch modes presented when using Retroplayer on RPi are modes that would support everything remaining on screen.

Actual Behavior

The stretch mode can cause the entire display in Kodi to be wonky.

Possible Fix

Unsure, but likely hide unsupported modes, or the modes are actually being set incorrectly on RPi.

To Reproduce

Steps to reproduce the behavior:

1. Load up LE on an RPi
2. Start a game
3. Change stretch mode

Debuglog

The debuglog can be found here:
Not available, only reporting this for other users. I unfortunately do not have an RPi to test on (they're impossible to get right now :-( )

Screenshots

Here are some links or screenshots to help explain the problem:

See screenshots in this post:
https://forum.kodi.tv/showthread.php?tid=332966&pid=3108710#pid3108710

Additional context or screenshots (if appropriate)

Here is some additional context or explanation that might help:

Your Environment

Used Operating system:

• Android

• iOS

• tvOS

• Linux

• OSX

• Windows

• Windows UWP

• Operating system version/name:

• Kodi version: Kodi V19, LibreElec on an RPi

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