Submit all code

.gitignore

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+.vs/
+**/bin/Debug/
+**/bin/Release/
+**/obj/Debug/
+**/obj/Release/
+*.csproj.user

CpuDataSourceExtension/CpuDataSource.cs

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+using System;
+using System.ComponentModel.Composition;
+using System.Diagnostics;
+using System.Threading;
+using System.Threading.Tasks;
+using SignalVisualizer.Contracts;
+
+namespace CpuDataSourceExtension
+{
+    [Export(typeof(IDataSource))]
+    public class CpuDataSource : DataSourceBase
+    {
+        public override string Name { get; } = "CPU meter";
+        public override uint Version { get; } = 1;
+        public override Guid UniqueIdentifier { get; } = new Guid("3c77228a-f646-4ce2-836b-d68e707f68a8");
+        public override string[] ComponentNames { get; } = new string[] { "Processor time (%)", "Idle time (%)" };
+
+        public override async Task Start(CancellationToken cancellationToken)
+        {
+            // allocates the storage for the values of the two components of the data source
+            var values = new double[2];
+
+            // create performance counters
+            var totalCpu = new PerformanceCounter("Processor", "% Processor Time", "_Total", true);
+            var currentProcessCpu = new PerformanceCounter("Processor", "% Idle Time", "_Total", true);
+
+            // iterate while not cancelled
+            while (cancellationToken.IsCancellationRequested == false)
+            {
+                // sample the performance counters values
+                values[0] = totalCpu.NextValue();
+                values[1] = currentProcessCpu.NextValue();
+
+                // notify SignalVisualizer that a new value has been produced
+                NotifyNext(values);
+
+                // awaits to avoid burn out, then loop and restart
+                await Task.Delay(250);
+            }
+        }
+    }
+}

CpuDataSourceExtension/CpuDataSourceExtension.csproj

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{0C589A68-BA92-4334-A711-E2F9E1025817}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>CpuDataSourceExtension</RootNamespace>
+    <AssemblyName>CpuDataSourceExtension</AssemblyName>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.ComponentModel.Composition" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="CpuDataSource.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\SignalVisualizer.Contracts\SignalVisualizer.Contracts.csproj">
+      <Project>{5c3c2e64-5e96-45d2-b58c-e46692699aaf}</Project>
+      <Name>SignalVisualizer.Contracts</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <PropertyGroup>
+    <PostBuildEvent>mkdir "$(SolutionDir)$(SolutionName)\$(OutDir)Extensions" &amp; copy "$(TargetPath)" "$(SolutionDir)$(SolutionName)\$(OutDir)Extensions\$(TargetFileName)"
+</PostBuildEvent>
+  </PropertyGroup>
+</Project>

CpuDataSourceExtension/Properties/AssemblyInfo.cs

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+using System.Reflection;
+
+[assembly: AssemblyTitle("CpuDataSourceExtension")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyProduct("CpuDataSourceExtension")]
+[assembly: AssemblyCopyright("Copyright © Sebastien ROBERT")]
+
+[assembly: AssemblyVersion("1.0.0.0")]

FourierDataSourceExtension/BaseTypes.cs

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+using System;
+using System.Collections.Generic;
+using System.Windows.Input;
+
+namespace FourierDataSourceExtension
+{
+    public abstract class ConfigurationViewModelBase
+    {
+        private Action configChanged;
+
+        protected ConfigurationViewModelBase(Action configChanged)
+        {
+            this.configChanged = configChanged;
+        }
+
+        protected bool SetValue<T>(ref T field, T value)
+        {
+            if (EqualityComparer<T>.Default.Equals(field, value) == false)
+            {
+                field = value;
+                configChanged();
+                return true;
+            }
+
+            return false;
+        }
+    }
+
+    public class AnonymousCommand : ICommand
+    {
+        private Action<object> action;
+
+        public event EventHandler CanExecuteChanged = delegate { };
+
+        public AnonymousCommand(Action<object> action)
+        {
+            if (action == null)
+                throw new ArgumentNullException(nameof(action));
+
+            this.action = action;
+        }
+
+        public bool CanExecute(object parameter)
+        {
+            return true;
+        }
+
+        public void Execute(object parameter)
+        {
+            action(parameter);
+        }
+    }
+}

FourierDataSourceExtension/FourierDataSource.cs

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+using System;
+using System.ComponentModel.Composition;
+using System.Diagnostics;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Xml;
+using SignalVisualizer.Contracts;
+
+namespace FourierDataSourceExtension
+{
+    public struct SineWaveParameters
+    {
+        public static readonly SineWaveParameters Identity = new SineWaveParameters(1.0, 0.0, 1.0);
+
+        public readonly double Amplitude;
+        public readonly double Phase;
+        public readonly double Frequency;
+
+        public SineWaveParameters(double amplitude, double phase, double frequency)
+        {
+            Amplitude = amplitude;
+            Phase = phase;
+            Frequency = frequency;
+        }
+
+        public double ProduceValue(double theta)
+        {
+            return Amplitude * Math.Sin((theta + Phase) * Frequency);
+        }
+    }
+
+    [Export(typeof(IDataSource))]
+    public class FourierDataSource : DataSourceBase
+    {
+        public override string Name { get; } = "Fourrier";
+        public override uint Version { get; } = 1;
+        public override Guid UniqueIdentifier { get; } = new Guid("b925976e-934f-4c73-b666-4480d514b9ca");
+        public override string[] ComponentNames { get; } = new string[] { "Signal" };
+
+        private MainWindow window;
+
+        public FourierDataSource()
+        {
+            Application.Current.Dispatcher.BeginInvoke((Action)delegate
+            {
+                window = new MainWindow(this, OnConfigurationChanged)
+                {
+                    Owner = Application.Current.MainWindow,
+                    WindowStartupLocation = WindowStartupLocation.CenterOwner,
+                };
+
+                window.Closing += (ss, ee) =>
+                {
+                    ee.Cancel = true;
+                    window.Visibility = Visibility.Collapsed;
+                };
+            });
+        }
+
+        public override async Task Start(CancellationToken cancellationToken)
+        {
+            double value;
+            var array = new double[1];
+            var stopwatch = Stopwatch.StartNew();
+
+            while (cancellationToken.IsCancellationRequested == false)
+            {
+                double theta = stopwatch.ElapsedMilliseconds / 1000.0;
+
+                value = 0.0;
+                foreach (SineWaveParametersViewModel vm in window.SineWaveParameters)
+                {
+                    if (vm.IsActive)
+                        value += vm.Model.ProduceValue(theta);
+                }
+
+                array[0] = value;
+
+                NotifyNext(array);
+
+                await Task.Delay(20);
+            }
+        }
+
+        private void OnConfigurationChanged()
+        {
+            OnConfigurationChanged(EventArgs.Empty);
+        }
+
+        public override void Configure()
+        {
+            base.Configure();
+            window.Visibility = Visibility.Visible;
+        }
+
+        public override void Load(XmlElement element)
+        {
+            window.SetSineWaves(element.ChildNodes.OfType<XmlElement>());
+        }
+
+        public override void Save(XmlWriter writer)
+        {
+            writer.WriteStartElement("parameters");
+            foreach (SineWaveParametersViewModel vm in window.SineWaveParameters)
+                vm.Save(writer);
+            writer.WriteEndElement();
+        }
+    }
+}

FourierDataSourceExtension/FourierDataSourceExtension.csproj

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{21EDA73C-354D-450F-99EB-F28EB5986DF2}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <RootNamespace>FourierDataSourceExtension</RootNamespace>
+    <AssemblyName>FourierDataSourceExtension</AssemblyName>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{60dc8134-eba5-43b8-bcc9-bb4bc16c2548};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <WarningLevel>4</WarningLevel>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup>
+    <StartupObject />
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.ComponentModel.Composition" />
+    <Reference Include="System.Xml" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Xaml">
+      <RequiredTargetFramework>4.0</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="WindowsBase" />
+    <Reference Include="PresentationCore" />
+    <Reference Include="PresentationFramework" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="BaseTypes.cs" />
+    <Compile Include="SineWaveParametersViewModel.cs" />
+    <Page Include="MainWindow.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+    <Compile Include="FourierDataSource.cs" />
+    <Compile Include="MainWindow.xaml.cs">
+      <DependentUpon>MainWindow.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Properties\AssemblyInfo.cs">
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="Properties\Resources.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DesignTime>True</DesignTime>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+    <Compile Include="Properties\Settings.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Settings.settings</DependentUpon>
+      <DesignTimeSharedInput>True</DesignTimeSharedInput>
+    </Compile>
+    <EmbeddedResource Include="Properties\Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+    <None Include="Properties\Settings.settings">
+      <Generator>SettingsSingleFileGenerator</Generator>
+      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
+    </None>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\SignalVisualizer.Contracts\SignalVisualizer.Contracts.csproj">
+      <Project>{5c3c2e64-5e96-45d2-b58c-e46692699aaf}</Project>
+      <Name>SignalVisualizer.Contracts</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <PropertyGroup>
+    <PostBuildEvent>mkdir "$(SolutionDir)$(SolutionName)\$(OutDir)Extensions" &amp; copy "$(TargetPath)" "$(SolutionDir)$(SolutionName)\$(OutDir)Extensions\$(TargetFileName)"
+</PostBuildEvent>
+  </PropertyGroup>
+</Project>