How to easily support messaging between RTCScriptTransform and RTCScriptTransformer

[youennf]

Safari prototype supports a MessagePort natively so that RTCScriptTransform and RTCScriptTransformer can exchange messages conveniently. This mimics AudioWorkletProcessor.port.

Another approach would be to add a parameter to RTCScriptTransform to transfer some objects when serialising the options constructor parameter. Something like:

const channel = new MessageChannel()
const transform = new RTCRtpScriptTransform(worker, { name: 'myPortTransform', port: { channel.port2 }, [channel.port2])
transform.port = channel.port1