private OnvifObject CreateOnvifObject(float x, float y, float area, string n, int id, int width, int height)
{
area /= scaleArea;
float r_x = (float)Reciprocal(width);
float r_y = (float)Reciprocal(height);
float r_xx = r_x * 2;
float r_yy = r_y * 2;
var centerOfGravity = new Vector {
X = x, Y = y
};
var blob = new OnvifObject(id)
{
Appearance = new VideoOS.Platform.Metadata.Appearance
{
Shape = new Shape
{
BoundingBox = new VideoOS.Platform.Metadata.Rectangle
{
Bottom = height - y - area / 2,
Left = x - area / 2,
Top = height - y + area / 2,
Right = x + area / 2
},
CenterOfGravity = centerOfGravity
},
Description = new DisplayText
{
Value = n
},
Transformation = new Transformation
{
Translate = new Vector {
X = -1, Y = -1
},
Scale = new Vector {
X = r_xx, Y = r_yy
}
}
}
};
return(blob);
}
internal string SendMetadataBox(Blob[] blobs, int w, int h)
{
try
{
OnvifObject blob1 = new OnvifObject();
OnvifObject blob2 = new OnvifObject();
OnvifObject blob3 = new OnvifObject();
OnvifObject blob4 = new OnvifObject();
if (blobs.Length > 1)
{
blob1 = CreateOnvifObject(blobs[0].CenterOfGravity.X, blobs[0].CenterOfGravity.Y, blobs[0].Area, blobs[0].ID.ToString(), 1, w, h);
}
if (blobs.Length > 2)
{
blob2 = CreateOnvifObject(blobs[1].CenterOfGravity.X, blobs[1].CenterOfGravity.Y, blobs[1].Area, blobs[1].ID.ToString(), 2, w, h);
}
if (blobs.Length > 3)
{
blob3 = CreateOnvifObject(blobs[2].CenterOfGravity.X, blobs[2].CenterOfGravity.Y, blobs[2].Area, blobs[2].ID.ToString(), 3, w, h);
}
if (blobs.Length > 4)
{
blob4 = CreateOnvifObject(blobs[3].CenterOfGravity.X, blobs[3].CenterOfGravity.Y, blobs[3].Area, blobs[3].ID.ToString(), 4, w, h);
}
MetadataStream metadata = new MetadataStream
{
VideoAnalyticsItems =
{
new VideoAnalytics
{
Frames =
{
new Frame(DateTime.UtcNow)
{
Objects =
{
blob1, blob2, blob3, blob4
}
}
}
}
}
};
var result = _metadataProviderChannel.QueueMetadata(metadata, DateTime.UtcNow);
if (result == false)
{
return(string.Format("{0}: Failed to write to channel", DateTime.UtcNow));
}
else
{
return(_metadataSerializer.WriteMetadataXml(metadata));
}
}
catch (Exception e)
{
return(e.Message);
}
}
void SendData(object obj)
{
var token = (CancellationToken)obj;
var dummyCenterOfGravity = new Vector {
X = 0f, Y = 0f
};
var boundingBox = new Rectangle
{
Bottom = BottomLimit,
Left = LeftLimit,
Top = BottomLimit + BoundingBoxSize,
Right = LeftLimit + BoundingBoxSize,
LineColor = Colors[0],
FillColor = Colors[Colors.Count / 2],
LineDisplayPixelThickness = 1
};
var description = new DisplayText
{
Value = Texts[0],
FontFamily = FontFamilys[0],
IsBold = false,
IsItalic = false,
Color = Colors[0],
Size = MinTextSize,
CenterX = 0,
CenterY = 0
};
const int staticObjectId = 2;
var staticObject = new OnvifObject(staticObjectId)
{
Appearance = new Appearance
{
Shape = new Shape
{
BoundingBox = new Rectangle
{
Bottom = -BoundingBoxSize / 2,
Left = -BoundingBoxSize / 2,
Top = BoundingBoxSize / 2,
Right = BoundingBoxSize / 2
}
},
Description = new DisplayText
{
Value = "This is just text"
}
}
};
_currentDirection = MovementDirected.Up;
while (token.IsCancellationRequested == false)
{
const int objectId = 1;
var metadata = new MetadataStream
{
VideoAnalyticsItems =
{
new VideoAnalytics
{
Frames =
{
new Frame(DateTime.UtcNow)
{
Objects =
{
new OnvifObject(objectId)
{
Appearance = new Appearance
{
Shape = new Shape
{
BoundingBox = boundingBox,
CenterOfGravity = dummyCenterOfGravity
},
Description = description
}
},
staticObject
}
}
}
}
}
};
var result = _metadataProviderChannel.QueueMetadata(metadata, DateTime.UtcNow);
if (result == false)
{
Trace.WriteLine(string.Format("{0}: Failed to write to channel", DateTime.UtcNow));
}
else
{
MoveBoundingBox(boundingBox);
UpdateLineColor(boundingBox);
UpdateFillColor(boundingBox);
UpdateLineThickness(boundingBox);
UpdateTextValue(description);
UpdateFontFamily(description);
UpdateTextDecoration(description);
UpdateTextColor(description);
UpdateTextSize(description);
UpdateTextPosition(description, boundingBox);
Invoke((MethodInvoker)(() =>
{
textMetadata.Text = _metadataSerializer.WriteMetadataXml(metadata);
textBoxTime.Text = DateTime.Now.ToString("HH.mm.ss:fff");
}));
}
Thread.Sleep(_timeBetweenMetadata);
}
}
