[Naka-Masa19]

Problem

Camera talkback is not extensible in the same way as the outgoing streaming path.

Outgoing streams can already be customized via start_stream / stop_stream. Incoming talkback cannot: set_endpoints always constructs the built-in TalkbackReceiver, which owns the UDP socket, SRTP unprotect, and RTP parse. There is no supported way to plug in a different receive path end-to-end (for example, handing the receive path to an external media pipeline).

Solution

• Add TalkbackReceiverProtocol (local_port, start, stop) as the receiver contract.
• Add overridable Camera.create_talkback_receiver(...), which returns the default TalkbackReceiver.
• Route set_endpoints through that factory instead of hard-coding TalkbackReceiver(...).
• Document the protocol in the talkback API docs.

Default behavior is unchanged. Subclasses can replace the whole receiver by overriding the factory.

AI assistance

AI-assisted (design discussion / PR text). Code authored and verified by me.