How do I access a FairPlay protected stream's frame in Metal for some post processing ?

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Created Jun ’20

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How do I access a FairPlay protected stream's frame in Metal for some post processing ? OpenGL provides extensions called GLEXTprotectedtextures and EGLPROTECTEDCONTENTEXT for accessing protected frames as textures. What's the equivalent in Metal ?

And, does VideoToolBox support FairPlay decoding ?

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Apple

Jun ’20

Although it is possible to implement overlays on the protected content by layering CALayers, you can't access FairPlay-protected content in any iOS or macOS API, by design. There are also no OpenGL extensions on our platform to enable this. Please file an ER, if you would like to see this as a feature (accessing protected surfaces).

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