Fix V4L2 BGR24 handling

[Thinner77]

Summary

Hi,

this is a small bugfix for V4L2 grabber, a (virtual-)device with pixelformat set to BGR3 (=BGR24) wasn't usable because of mixup RGB24/BGR24 in code.

wbr

What kind of change does this PR introduce? (check at least one)

• Bugfix
• Feature
• Code style update
• Refactor
• Docs
• Build-related changes
• Other, please describe:

If changing the UI of web configuration, please provide the before/after screenshot:

Does this PR introduce a breaking change? (check one)

• Yes
• No

If yes, please describe the impact and migration path for existing setups:

The PR fulfills these requirements:

• When resolving a specific issue, it's referenced in the PR's body (e.g. Fixes: #xxx[,#xxx], where "xxx" is the issue number)

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• A convincing reason for adding this feature
• Related documents have been updated (docs/docs/en)
• Related tests have been updated

PLEASE DON'T FORGET TO ADD YOUR CHANGES TO CHANGELOG.MD

• Yes, CHANGELOG.md is also updated

To avoid wasting your time, it's best to open a feature request issue first and wait for approval before working on it.

Other information:

[Lord-Grey]

Great that you spotted that one!

[Thinner77]

Hi,

if you have some time, check MF grabber too, same issue, search for RGB24, but i don't know if it's a problem.

wbr

[Lord-Grey]

Hi,

if you have some time, check MF grabber too, same issue, search for RGB24, but i don't know if it's a problem.

wbr

@Thinner77 see #1749