/// <summary>
/// Returns true and adds the edge iff the specified directed edge does not lead to a cycle.
/// </summary>
public bool AddEdge(Node.Output source, Node.Input sink)
{
IEnumerable <Node> nodeList = DepthFirstSearch(source.Node);
// if sink can be reached after starting dfs at the source the new edge would create a cycle
if (nodeList.Any(node => node.Inputs.Contains(sink)))
{
return(false);
}
else
{
sink.Source = source;
return(true);
}
}
public Node.Input AddInput(Node.Output source)
{
var input = new Node.Input { Source = source };
Model.Inputs.Add(input);
inputs.Add(new InOutputViewModel(input, this));
NotifyOfPropertyChange(() => Inputs);
return input;
}
public void RedrawOnTickSetBack()
{
// Add Input Node for DiagramNode with 3 Outputs.
AnonymousNode sourceNode = new AnonymousNode(AnonNodeHelper.SourceNode, 3);
Frame[] inputs = sourceNode.Process(null, 0);
// Generate DiagramNode and add referencevideo.
Node.Input reference = new Node.Input();
reference.Source = sourceNode.Outputs[0];
DiagramNode diaNode = new DiagramNode();
diaNode.ReferenceVideo = reference;
diaNode.Inputs.Add(reference);
// Add other Outputs as Inputs to DiagramNode.
Node.Input video = new Node.Input();
video.Source = sourceNode.Outputs[1];
diaNode.Inputs.Add(video);
// Generate sample GraphType to DiagramGraph.
DiagramGraph pixDiff = new DiagramGraph();
pixDiff.Video = video;
pixDiff.Type = new PixelDiff();
diaNode.Graphs.Add(pixDiff);
diaNode.Process(inputs, 0);
diaNode.Process(inputs, 1);
Assert.Equal(diaNode.Graphs[0].Data.Count, 2);
diaNode.Process(inputs, 0);
Assert.Equal(diaNode.Graphs[0].Data.Count, 1);
}
public void TestNoDrawingIfDiagramNodeNotEnabled()
{
// Add Input Node for DiagramNode with 3 Outputs.
AnonymousNode sourceNode = new AnonymousNode(AnonNodeHelper.SourceNode, 3);
Frame[] inputs = sourceNode.Process(null, 0);
// Generate DiagramNode and add referencevideo.
Node.Input reference = new Node.Input();
reference.Source = sourceNode.Outputs[0];
DiagramNode diaNode = new DiagramNode();
diaNode.ReferenceVideo = reference;
diaNode.Inputs.Add(reference);
// Add other Outputs as Inputs to DiagramNode.
Node.Input video = new Node.Input();
video.Source = sourceNode.Outputs[1];
diaNode.Inputs.Add(video);
// Generate sample GraphType to DiagramGraph.
DiagramGraph pixDiff = new DiagramGraph();
pixDiff.Video = video;
pixDiff.Type = new PixelDiff();
diaNode.Graphs.Add(pixDiff);
diaNode.IsEnabled = false;
diaNode.Process(inputs, 0);
Assert.Empty(diaNode.Graphs[0].Data);
}
public void TestDiagramNode()
{
// Add Input Node for DiagramNode with 3 Outputs.
AnonymousNode sourceNode = new AnonymousNode(AnonNodeHelper.SourceNode, 3);
Frame[] inputs = sourceNode.Process(null, 0);
// Generate DiagramNode and add referencevideo.
Node.Input reference = new Node.Input();
reference.Source = sourceNode.Outputs[0];
DiagramNode diaNode = new DiagramNode();
diaNode.ReferenceVideo = reference;
diaNode.Inputs.Add(reference);
// Add other Outputs as Inputs to DiagramNode.
Node.Input video = new Node.Input();
video.Source = sourceNode.Outputs[1];
diaNode.Inputs.Add(video);
Node.Input annVid = new Node.Input();
annVid.Source = sourceNode.Outputs[2];
diaNode.Inputs.Add(annVid);
// Generate and add all GraphTypes to DiagramGraph once.
DiagramGraph pixDiff = new DiagramGraph();
pixDiff.Video = video;
pixDiff.Type = new PixelDiff();
DiagramGraph pseudoNoiseRatio = new DiagramGraph();
pseudoNoiseRatio.Video = video;
pseudoNoiseRatio.Type = new PeakSignalNoiseRatio();
DiagramGraph inBlFreq = new DiagramGraph();
inBlFreq.Video = annVid;
inBlFreq.Type = new IntraBlockFrequency();
DiagramGraph decDiff = new DiagramGraph();
decDiff.Video = annVid;
decDiff.Type = new DecisionDiff();
DiagramGraph art = new DiagramGraph();
art.Video = video;
art.Type = new Artifacts();
diaNode.Graphs.Add(pixDiff);
diaNode.Graphs.Add(pseudoNoiseRatio);
diaNode.Graphs.Add(inBlFreq);
diaNode.Graphs.Add(decDiff);
diaNode.Graphs.Add(art);
diaNode.Process(inputs, 0);
// Calculate expected results independently from DiagramGraph methods.
double mse = 0.0;
double pixDifference = 0.0;
double intrablocks = 0.0;
double artifacts = 0.0;
for (int x = 0; x < inputs[0].Size.Width; x++) {
for (int y = 0; y < inputs[0].Size.Height; y++) {
pixDifference += Math.Abs(inputs[0][x, y].R - inputs[1][x, y].R) + Math.Abs(inputs[0][x, y].G - inputs[1][x, y].G) + Math.Abs(inputs[0][x, y].B - inputs[1][x, y].B);
mse += Math.Pow(((inputs[0][x, y].R + inputs[0][x, y].G + inputs[0][x, y].B) - (inputs[1][x, y].R +
inputs[1][x, y].G + inputs[1][x, y].B)), 2);
var difference = Math.Abs(inputs[0][x, y].R - inputs[1].GetPixelOrBlack(x, y).R);
difference += Math.Abs(inputs[0][x, y].G - inputs[1].GetPixelOrBlack(x, y).G);
difference += Math.Abs(inputs[0][x, y].B - inputs[1].GetPixelOrBlack(x, y).B);
if (difference >= 40)
artifacts += 1;
}
}
foreach (MacroblockDecision d in ((AnnotatedFrame)inputs[2]).Decisions)
{
if (d.PartitioningDecision == MacroblockPartitioning.Intra16x16 | d.PartitioningDecision == MacroblockPartitioning.Intra4x4 | d.PartitioningDecision == MacroblockPartitioning.Intra8x8 | d.PartitioningDecision == MacroblockPartitioning.IntraPCM) {
intrablocks++;
}
}
double decDifference = 0.0;
if (((AnnotatedFrame)inputs[0]) is AnnotatedFrame && ((AnnotatedFrame)inputs[2]) is AnnotatedFrame && ((AnnotatedFrame)inputs[0]).Size.Height == ((AnnotatedFrame)inputs[2]).Size.Height
&& ((AnnotatedFrame)inputs[0]).Size.Width == ((AnnotatedFrame)inputs[2]).Size.Width) {
AnnotatedFrame annFrame = ((AnnotatedFrame)inputs[0]);
AnnotatedFrame annRef = ((AnnotatedFrame)inputs[2]);
for (int i = 0; i < annFrame.Decisions.GetLength(0); i++) {
for (int j = 0; j < annFrame.Decisions.GetLength(1); j++) {
if (annFrame.Decisions[i, j].PartitioningDecision == annRef.Decisions[i, j].PartitioningDecision)
decDifference++;
}
}
decDifference /= annFrame.Decisions.Length;
decDifference *= 100;
}
intrablocks = 100 * intrablocks / ((AnnotatedFrame) inputs[2]).Decisions.Length;
pixDifference = 100 * pixDifference / (765 * inputs[0].Size.Height * inputs[0].Size.Width);
mse *= (double)1 / (3 * inputs[1].Size.Height * inputs[1].Size.Width);
double psnr;
if (mse == 0.0)
psnr = 0.0;
psnr = 10 * Math.Log10((Math.Pow((Math.Pow(2, 24) - 1), 2)) / mse);
artifacts = 100 * artifacts / (inputs[0].Size.Height * inputs[0].Size.Width);
Assert.Equal(pixDifference, diaNode.Graphs[0].Data[0].Value);
Assert.Equal(psnr, diaNode.Graphs[1].Data[0].Value);
Assert.Equal(intrablocks, diaNode.Graphs[2].Data[0].Value, 7);
Assert.Equal(decDifference, diaNode.Graphs[3].Data[0].Value, 7);
Assert.Equal(artifacts, diaNode.Graphs[4].Data[0].Value, 7);
}