Customize Video Frame after Encoding

[Ivan Hutomo]

Hi, currently I am trying to modify webRTC for specialized purposes in Android. I saw your discussion here. I need help with how we could use this interface to modify our frame after encoding.

For now I just really want to XOR the frame after encoding before sending it through PeerConnection. Since I am not familiar with C++, I tried to implement my own method inherited from this interface but it did not work. 

Could anyone give me a code example for doing this? because seems that someone here has already successfully mutated the frame here. My purpose is to use this one on android, that's why I could not use insertable stream on the web, so I should modify it directly in native C++. 

I really appreciate any help! Thanks so much.

Here is my ExampleTransformer.h and ExampleTransformer.cpp

[V I]

I'm using FrameEncryptorInterface instead as recommended by Philipp and it works fine for me. Dead easy to use

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[Ivan Hutomo]

Could anyone give me the clue where I should add to the corresponding sender?

I think we should add this kind of code to set the frame encryptor, but I do not know where to place it. Thank you.

rtc::scoped_refptr<HCCrypto> frame_encryptor( new HCCrypto());

// sender->

sender->SetFrameEncryptor(frame_encryptor);

I tried to place it in conductor.cc but to be exact in conductor::ReinitializePeerConnectionForLoopback()  but it did not work.

Thanks, appreciate any help

[Ivan Hutomo]

Hello everyone, maybe someone could help me to show me where I could add my XOR FrameEncryptor based on this flow:

I am a bit stuck with C++, thank you so much for help