Revision as of 21:53, 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") ("no:int",

"layer:int",
"deadlineOffsetInSec:double",
"sizeInByte:int")

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

Segment?

<UML density="200"> Class.Video("Video") ("traceFileName:String",

"frameTrace:Hashtable<frameNo:int, frame:Frame>",
"segmentTrace:Hashtable<segmentNo:int, segment:Segment>")

("prepareSegment(...):void"); drawObject(Video); </UML>

@@ Line 4: / Line 4: @@
 <UML density="200">
-Class.Frame("Frame: a video frame read from a trace file")
+Class.Frame("Frame")
-("no:int:serial frame number",
+("no:int",
-  "layer:int:which layer is this frame in, set to zero for nonscalable file",
+  "layer:int",
-  "deadlineOffset:double:time offset of deadline",
+  "deadlineOffsetInSec:double",
-  "size:int:frame size (in byte)")
+  "sizeInByte:int")
 ();
 drawObject(Frame);
@@ Line 16: / Line 16: @@
 <UML density="200">
-Class.Video("Video: a coded stream that may have multiple layer")
+Class.Video("Video")
-("fileName:String:trace filename",
+("traceFileName:String",
-  "frameTrace:Hashtable<frameNo:int, frame:Frame>:frame-level trace read from the trace file",
+  "frameTrace:Hashtable<frameNo:int, frame:Frame>",
-  "segmentTrace:Hashtable<segmentNo:int, segment:Segment>:segment-level trace generated by function prepareSegment(...)")
+  "segmentTrace:Hashtable<segmentNo:int, segment:Segment>")
-("prepareSegment(...):void:map the frameTrace to segmentTrace, we probably want to support multiple strategies later, but implement time-based one for now.");
+("prepareSegment(...):void");
 drawObject(Video);
 </UML>
-= Implementation Concern =

Difference between revisions of "Private:psim"

Revision as of 21:53, 4 March 2009

Class Diagrams