Design/Feeds.md

@@ -3,6 +3,25 @@ This class manages the streaming of `FrameSet`s. It is entirely responsible for
 
 ## Requirements
 
+### 1. Creation and Configuration
+
+### 2. External Frame Generation
+
+### 3. Receipt and Filtering
+
+### 4. Statistics and Metadata
+
 ## Design
 
 ## Discussion
+There are two primary modes to this class, one is being the owner of a generating source who injects Frames and the other is an observer who receives Frames but has the ability to modify the state. A single Feed class may take on both roles depending on the frame set identifier.
+
+It should be possible to merge multiple sources into a single frameset, currently this occurs inside the `Stream` objects through a multiplexing/demultiplexing process.
+
+Frame set identifiers must also be allocated.
+
+What about stream discovery and enabling discovered streams within a feed? Most probably the discovery process should be a different class and that URIs are used. The discovery process ought to be capable of obtaining meta-data about the streams.
+
+Feeds can also produce output streams with particular URIs, it needs to be possible to add/remove these. Each output stream may also have filtering applied by sender to limit which sources and frame sets can be sent on that stream.
+
+Should the feed class be responsible for providing all meta-data about added streams, even if those streams are not enabled for receiving data? What is that meta-data?
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