[webrtc-encoded-transform] Define needed data to pass between depacketizer and decoder (#174)

alvestrand has just created a new issue for https://github.com/w3c/webrtc-encoded-transform:

== Define needed data to pass between depacketizer and decoder ==
When splitting the depacketizer from the decoder, what needs to be passed between them?
These things would also need to be accessible to the transform API.

Depacketizer -> Decoder:
- Frames

Decoder -> Depacketizer
- Key frame requests
- Display limitations / restrictions
- NACK control (telling depacketizer when NACKs shouldn't be sent for missing data any more)

Others?


Please view or discuss this issue at https://github.com/w3c/webrtc-encoded-transform/issues/174 using your GitHub account


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