Revision as of 21:49, 4 March 2009

This page documents the development of a discrete event simulator for P2P video streaming applications. This simulator captures important features of data-driven video streaming systems. In particular, it is designed to evaluate: (i) the performance of various segment scheduling algorithms; (ii) the potential of network coding in multi-layer P2P video streaming systems.

Class Diagrams

<UML density="200"> Class.Frame("Frame: a video frame read from a trace file") ("no:int:serial frame number",

"layer:int:which layer is this frame in, set to zero for nonscalable file",
"deadlineOffset:double:time offset of deadline",
"size:int:frame size in bytes")

(); drawObject(Frame); </UML>

Segment?

<UML density="200"> Class.Video("Video: a coded stream that may have multiple layer") ("fileName:String:trace filename",

"frameTrace:Hashtable<frameNo:int, frame:Frame>:frame-level trace read from the trace file",
"segmentTrace:Hashtable<segmentNo:int, segment:Segment>:segment-level trace generated by function prepareSegment(...)")

("prepareSegment(...):void:map the frameTrace to segmentTrace, we probably want to support multiple strategies later, but implement time-based one for now."); drawObject(Video); </UML>

Difference between revisions of "Private:psim"

Revision as of 21:49, 4 March 2009

Class Diagrams

Implementation Concern

@@ Line 3: / Line 3: @@
 = Class Diagrams =
-<UML density="180">
+<UML density="200">
-Class.A("aaaPoint")
+Class.Frame("Frame: a video frame read from a trace file")
-("#x:int", "#y:int")
+("no:int:serial frame number",
-("+set(x:int, y:int)",
+ "layer:int:which layer is this frame in, set to zero for nonscalable file",
-"+getX():int",
+ "deadlineOffset:double:time offset of deadline",
-"+getY():int",
+ "size:int:frame size in bytes")
-"-debug():void");
+();
-drawObject(A);
+drawObject(Frame);
+</UML>
+Segment?
+<UML density="200">
+Class.Video("Video: a coded stream that may have multiple layer")
+("fileName:String:trace filename",
+ "frameTrace:Hashtable<frameNo:int, frame:Frame>:frame-level trace read from the trace file",
+ "segmentTrace:Hashtable<segmentNo:int, segment:Segment>:segment-level trace generated by function prepareSegment(...)")
+("prepareSegment(...):void:map the frameTrace to segmentTrace, we probably want to support multiple strategies later, but implement time-based one for now.");
+drawObject(Video);
 </UML>
 = Implementation Concern =