Linden Lab Official talk:Media Rendering Plugin System Technical Overview
Current draft notes and questions:
One-shot rendering mode: Not Yet Implemented
Proxy Objects: LLPluginClassMedia - knows about msg defns.
Does every media plugin require a special/custom proxy object? Do we expect MOST media plugins to require a custom proxy object?
"Likewise, each proxy object will have a mechanism (probably a listener-type interface) that will allow other code to sign up to receive relevant messages from the plugin. "
The API describes the interface between the plugin and the plugin manager. This is subject to a design decision about how messages are routed - via the plugin manager or directly from plugin to client.