MF-grabber: Add support for bottom-up image handling

[Thinner77]

Summary

Hi,

this PR will (re-)add support for bottom-up images in MF-grabber. The previous implementation was removed in my PR #1739, as it was based on pixelformat which was incorrect (see comments there). It's now based on image stride, information is collected in MF-grabber and processed there only once.

Tested on Windows 10 using MF-grabber with internal web-camera as top-down image source and DroidCam (free version) as bottom-up image source.

Convincing reason for adding this feature: Lord-Grey said: "Our intend is to make things as easy as possible for users, i.e. if they setup the system it should work out of the box as much as possible." Personal reason: If i break things, i have to fix them.

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)

If adding a new feature, the PR's description includes:

• 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:

resources used:
https://learn.microsoft.com/en-us/windows/win32/medfound/image-stride
https://learn.microsoft.com/en-us/windows/win32/medfound/mf-mt-default-stride-attribute
https://learn.microsoft.com/en-us/windows/win32/medfound/uncompressed-video-buffers

[Thinner77]

Hi, please don't merge yet, i'm still not happy with the code. Sorry. wbr

[Lord-Grey]

@Thinner77 Thanks for going the extra mile on this; much appreciated.
I will wait, until you say it is ready for review/merge.

[Thinner77]

Hi @Lord-Grey,

i think i'm happy with the code now. Minimal changes to the MF-grabber and the flipmode is only corrected once during device initialization. Please review and test, then decide to merge.

The failed check is unrelated to this code change.

wbr