Added compute device selection

Added a call to butterflow to get compute devices, as well as a user setting that lets them set which device they want to use. I only have a single GPU, so I am unable to test this.

butterflow-ui.setup/Product.wxs

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
-  <Product Id="*" Name="butterflow-ui" Language="1033" Version="1.0.3" Manufacturer="butterflow-ui @ github" UpgradeCode="bba9d512-377a-467e-920a-cbcf36ffc072">
+  <Product Id="*" Name="butterflow-ui" Language="1033" Version="1.0.4" Manufacturer="butterflow-ui @ github" UpgradeCode="bba9d512-377a-467e-920a-cbcf36ffc072">
     <Package Id="*" InstallerVersion="200" Compressed="yes" InstallScope="perMachine" />
 
     <MajorUpgrade DowngradeErrorMessage="A newer version of [ProductName] is already installed." />

butterflow-ui/App.config

@@ -13,6 +13,9 @@
             <setting name="Language" serializeAs="String">
                 <value>en-US</value>
             </setting>
+            <setting name="Device" serializeAs="String">
+                <value>0</value>
+            </setting>
         </butterflow_ui.Properties.Settings>
     </userSettings>
 </configuration>

butterflow-ui/ButterflowWrapper.cs

@@ -24,6 +24,8 @@ public class ButterflowWrapper : PropertyChangedAlerter
         private const string REGEX_PROGRESS = @"To write\:\s*\w*\s*\w*\,*\w*\s*(?<Progress>\d+\.*\d*)%";
         /// <summary> An alternative RegEx string for detecting progress made when rendering a video. </summary>
         private const string REGEX_PROGRESS_ALT = @"\<Rendering progress\:\s*(?<Progress>\d+\.*\d*)%\>";
+        /// <summary> The RegEx string for determining available processing devices in butterflow.. </summary>
+        private const string REGEX_DEVICE = @"\*\s*Device\s*(?<DeviceID>\d+)\s*\:\s*(?<DeviceName>(\w*\s*)*)";
 
         /// <summary> Full pathname of the butterflow executable file. </summary>
         private Lazy<string> executablePath = new Lazy<string>(() => Path.Combine(Directory.GetCurrentDirectory(), "ThirdPartyCompiled", "butterflow.exe"));
@@ -41,6 +43,8 @@ public class ButterflowWrapper : PropertyChangedAlerter
         private InputInterpreter interpreter = new InputInterpreter();
         /// <summary> Event queue for all listeners interested in ParsedConsoleOutputRecieved events. </summary>
         public event EventHandler<ButterflowOutputArgs> ParsedConsoleOutputRecieved;
+        /// <summary> Event queue for all listeners interested in ButterflowExited events. </summary>
+        public event EventHandler<ButterflowExitArgs> ButterflowExited;
 
         #endregion
 
@@ -91,6 +95,10 @@ private set
             }
         }
 
+        /// <summary> Gets or sets the list of devices available for butterflow processing. </summary>
+        /// <value> The devices available for butterflow processing. </value>
+        public Dictionary<int, string> Devices { get; private set; } = new Dictionary<int, string>();
+
         #endregion
 
         #region Methods
@@ -99,7 +107,7 @@ private set
         /// <param name="optionsConfiguration"> The options configuration. </param>
         public void Run(OptionsConfiguration optionsConfiguration)
         {
-            for(int i = 0; i < optionsConfiguration.VideoInput.Count(); i++)
+            for (int i = 0; i < optionsConfiguration.VideoInput.Count(); i++)
             {
                 var arguments = optionsConfiguration.ToButterflowArguments(i);
                 this.runQueue.Enqueue(arguments);
@@ -139,7 +147,7 @@ public void ProcessQueue()
         /// <summary> Kills the running instance of butterflow, cancelling its current operation. </summary>
         public void Cancel()
         {
-            if(this.IsRunning && this.runningProcess != null)
+            if (this.IsRunning && this.runningProcess != null)
             {
                 this.runningProcess.Kill();
             }
@@ -155,6 +163,13 @@ public void Probe(string videoFile)
             Run(arguments);
         }
 
+        /// <summary> Gets the devices available for butterflow processing. </summary>
+        public void GetDevices()
+        {
+            string arguments = "--show-devices";
+            Run(arguments);
+        }
+
         /// <summary> Runs butterflow with the given <paramref name="arguments"/> by adding it to the queue. </summary>
         /// <param name="arguments">     Options for controlling the operation. </param>
         private void Run(string arguments)
@@ -172,6 +187,8 @@ private void Process_Exited(object sender, EventArgs e)
             this.IsRunning = false;
             this.runningProcess = null;
 
+            OnButterflowExited();
+
             ProcessQueue();
         }
 
@@ -201,7 +218,7 @@ private void ParseConsoleOutput(string consoleOutput)
 
             // Test for playback rate
             regex = new Regex(REGEX_RATE);
-            foreach(Match match in regex.Matches(consoleOutput))
+            foreach (Match match in regex.Matches(consoleOutput))
             {
                 var rate = match.Groups["Rate"].Value;
 
@@ -210,7 +227,7 @@ private void ParseConsoleOutput(string consoleOutput)
 
             // Test for progress being made when rendering a video
             regex = new Regex(REGEX_PROGRESS);
-            foreach(Match match in regex.Matches(consoleOutput))
+            foreach (Match match in regex.Matches(consoleOutput))
             {
                 var progress = match.Groups["Progress"].Value;
 
@@ -230,6 +247,23 @@ private void ParseConsoleOutput(string consoleOutput)
 
                 OnParsedConsoleOutputRecieved(ButterflowOutputType.Progress, progress, consoleOutput);
             }
+
+            regex = new Regex(REGEX_DEVICE);
+            foreach (Match match in regex.Matches(consoleOutput))
+            {
+                var deviceID = match.Groups["DeviceID"].Value;
+                var deviceName = match.Groups["DeviceName"].Value.Trim();
+
+                this.interpreter.Interpret(deviceID);
+
+                if (!this.Devices.ContainsKey(this.interpreter.Int))
+                {
+                    this.Devices.Add(this.interpreter.Int, deviceName);
+                    OnPropertyChanged("Devices");
+                }
+
+                OnParsedConsoleOutputRecieved(ButterflowOutputType.Device, deviceName, consoleOutput);
+            }
         }
 
         /// <summary> Executes the parsed console output recieved action. </summary>
@@ -238,10 +272,13 @@ private void ParseConsoleOutput(string consoleOutput)
         /// <param name="consoleOutput"> The console output from butterflow. </param>
         private void OnParsedConsoleOutputRecieved(ButterflowOutputType outputType, string value, string consoleOutput)
         {
-            if (this.ParsedConsoleOutputRecieved != null)
-            {
-                this.ParsedConsoleOutputRecieved(this, new ButterflowOutputArgs(outputType, value, consoleOutput));
-            }
+            this.ParsedConsoleOutputRecieved?.Invoke(this, new ButterflowOutputArgs(outputType, value, consoleOutput));
+        }
+
+        /// <summary> Executes the butterflow exited action. </summary>
+        private void OnButterflowExited()
+        {
+            this.ButterflowExited?.Invoke(this, new ButterflowExitArgs());
         }
 
         /// <summary> Event handler. Called by Process for output data received events. </summary>
@@ -308,6 +345,19 @@ public ButterflowConsoleOutputArgs(string consoleOutput)
             #endregion
         }
 
+        /// <summary> Arguments for butterflow exiting. </summary>
+        public class ButterflowExitArgs : EventArgs
+        {
+            #region Constructors
+
+            public ButterflowExitArgs()
+            {
+                //
+            }
+
+            #endregion
+        }
+
         /// <summary> Values that represent butterflow output types. </summary>
         public enum ButterflowOutputType
         {
@@ -318,7 +368,9 @@ public enum ButterflowOutputType
             /// <summary> Video playback rate. </summary>
             Rate,
             /// <summary> Video processing progress. </summary>
-            Progress
+            Progress,
+            /// <summary> An available processing device. </summary>
+            Device
         }
 
         #endregion

butterflow-ui/Localization/Localization.resx

@@ -390,4 +390,7 @@
   <data name="UpdateAvailableLabel" xml:space="preserve">
     <value>A newer version of butterflow-ui is available.</value>
   </data>
+  <data name="DeviceLabel" xml:space="preserve">
+    <value>Computing Device</value>
+  </data>
 </root>

butterflow-ui/OptionsConfiguration.cs

@@ -6,6 +6,7 @@
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using butterflow_ui.Properties;
 using csmic;
 
 namespace butterflow_ui
@@ -531,6 +532,11 @@ public string ToButterflowArguments(int videoInputIndex = 0)
                 stringBuilder.AppendFormat("-vs {0}:{1} ", this.Width, this.Height);
             }
 
+            if(Settings.Default.Device != 0)
+            {
+                stringBuilder.AppendFormat("-device {0} ", Settings.Default.Device);
+            }
+
             if (!string.IsNullOrWhiteSpace(this.PlaybackRate)) stringBuilder.AppendFormat("-r {0} ", this.PlaybackRate);
             if (this.KeepAudio) stringBuilder.Append("-audio ");
             if (this.LosslessQuality) stringBuilder.Append("-l ");

butterflow-ui/OptionsWindow.xaml

@@ -14,7 +14,11 @@
                 <Label Content="{x:Static loc:Localization.LanguageLabel}" />
                 <ComboBox DisplayMemberPath="DisplayName" ItemsSource="{Binding SupportedLanguages, Mode=TwoWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type butterflow_ui:OptionsWindow}}, UpdateSourceTrigger=PropertyChanged}" SelectedItem="{Binding Source={x:Static settings:Settings.Default}, Path=Language}" />
             </WrapPanel>
-            <TextBlock Text="{x:Static loc:Localization.OptionsWindowLanguageChangeNotice}" />
+            <TextBlock Text="{x:Static loc:Localization.OptionsWindowLanguageChangeNotice}" Foreground="Gray" />
+            <WrapPanel>
+                <Label Content="{x:Static loc:Localization.DeviceLabel}" />
+                <ComboBox Name="comboDeviceList" DisplayMemberPath="Value" ItemsSource="{Binding ButterflowWrapper.Devices, Mode=OneWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type butterflow_ui:OptionsWindow}}, UpdateSourceTrigger=PropertyChanged}" SelectedIndex="{Binding Source={x:Static settings:Settings.Default}, Path=Device}" />
+            </WrapPanel>
             <Separator Margin="0,10" />
             <Button Name="btnSave" MaxWidth="45" Content="{x:Static loc:Localization.SaveLabel}" Click="btnSave_Click" />
         </StackPanel>

butterflow-ui/OptionsWindow.xaml.cs

@@ -1,4 +1,5 @@
-using System;
+using butterflow_ui.Properties;
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
@@ -21,6 +22,9 @@ public partial class OptionsWindow : Window
     {
         #region Properties
 
+        /// <summary> The butterflow wrapper used to call butterflow. </summary>
+        public ButterflowWrapper ButterflowWrapper { get; set; } = new ButterflowWrapper();
+
         /// <summary> Gets or sets the supported languages. </summary>
         /// <value> The supported languages. </value>
         public List<CultureInfo> SupportedLanguages { get; set; } = new List<CultureInfo>(new[]
@@ -40,6 +44,8 @@ public partial class OptionsWindow : Window
         /// <summary> Default constructor. </summary>
         public OptionsWindow()
         {
+            this.ButterflowWrapper.GetDevices();
+            this.ButterflowWrapper.ButterflowExited += ButterflowWrapper_ButterflowExited;
             InitializeComponent();
         }
 
@@ -57,6 +63,21 @@ private void btnSave_Click(object sender, RoutedEventArgs e)
             this.Close();
         }
 
+        /// <summary> Butterflow wrapper butterflow exited. </summary>
+        /// <param name="sender"> Source of the event. </param>
+        /// <param name="e">      The ButterflowExitArgs to process. </param>
+        private void ButterflowWrapper_ButterflowExited(object sender, ButterflowWrapper.ButterflowExitArgs e)
+        {
+            if (Settings.Default.Device >= 0)
+            {
+                this.comboDeviceList.Dispatcher.Invoke(() => this.comboDeviceList.SelectedIndex = Settings.Default.Device);
+            }
+            else
+            {
+                this.comboDeviceList.Dispatcher.Invoke(() => this.comboDeviceList.SelectedIndex = 0);
+            }
+        }
+
         #endregion
     }
 }

butterflow-ui/Properties/AssemblyInfo.cs

@@ -51,5 +51,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.3.*")]
+[assembly: AssemblyVersion("1.0.4.*")]
 [assembly: AssemblyFileVersion("1.0.0.0")]

butterflow-ui/Properties/Settings.settings

@@ -5,5 +5,8 @@
     <Setting Name="Language" Type="System.Globalization.CultureInfo" Scope="User">
       <Value Profile="(Default)">en-US</Value>
     </Setting>
+    <Setting Name="Device" Type="System.Int32" Scope="User">
+      <Value Profile="(Default)">0</Value>
+    </Setting>
   </Settings>
 </SettingsFile>