Multiple video frame processors (+ implementation for ios)

[wjaykim]

This PR adds support for registering multiple video frame processors.
Plus, it adds missing video frame processor functionality for ios platform as well.

[saghul]

Thank you! I'll provide a full review as soon as possible.

Quick question: what is your use case, that needs multiple processors at once?

[wjaykim]

With multiple processors, users will be able to pipe the processors in order. For example, in future I want to apply beauty face effect first, then apply virtual background effect.
Also it is possible to apply the effects in one processor by writing all the codes in a processor, but then I won't be able to disable one of either effect if user want to disable one of those effects.

[saghul]

Makes sense!

[fukemy]

hi @wjaykim can u provide sample processor like virtual background, blur... thanks so much

[wjaykim]

Sorry for late response. I pushed the conflicts resolved code.

[8BallBomBom]

Thanks for resolving the conflicts.
Will be looking to test and merge soon.

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Old Rotate Effect Implementation Ref: #1169

[8BallBomBom]

Will need a review and testing but possibly good to go for the next release 🤔
Should bring Android and iOS up to feature parity for the frame processor/effect handling.

[8BallBomBom]

Hoping to test iOS soon but Android support seems to be working as expected.
@saghul Think we can include this with the next release or alongside M118?

[saghul]

I'd like to wait until 118 is done.

[8BallBomBom]

No worries, gives extra time to test 😸

[QSJSI]

Hoping to test iOS soon but Android support seems to be working as expected. @saghul Think we can include this with the next release or alongside M118?

Greetings. Could you tell me how I can test the video effects from this PR? I'm interested in any effect that can be applied to the stream, for example, a background blur, a simple geometric figure on top of the stream, etc. Thank you in advance.

@8BallBomBom @wjaykim

[8BallBomBom]

Sorry for the overly late response.
We may include examples in the future.
As for this PR, I'll be looking to push it up soon with the New Arch update.