Added pausing/resuming for interpolation, async (background) web checks

Code/Extensions/ProcessExtensions.cs

@@ -0,0 +1,61 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading.Tasks;
+using Win32Interop;
+
+namespace Flowframes.Extensions
+{
+    public static class ProcessExtensions
+    {
+        [Flags]
+        public enum ThreadAccess : int
+        {
+            TERMINATE = (0x0001),
+            SUSPEND_RESUME = (0x0002),
+            GET_CONTEXT = (0x0008),
+            SET_CONTEXT = (0x0010),
+            SET_INFORMATION = (0x0020),
+            QUERY_INFORMATION = (0x0040),
+            SET_THREAD_TOKEN = (0x0080),
+            IMPERSONATE = (0x0100),
+            DIRECT_IMPERSONATION = (0x0200)
+        }
+
+        [DllImport("kernel32.dll")]
+        static extern IntPtr OpenThread(ThreadAccess dwDesiredAccess, bool bInheritHandle, uint dwThreadId);
+        [DllImport("kernel32.dll")]
+        static extern uint SuspendThread(IntPtr hThread);
+        [DllImport("kernel32.dll")]
+        static extern int ResumeThread(IntPtr hThread);
+
+        public static void Suspend(this Process process)
+        {
+            foreach (ProcessThread thread in process.Threads)
+            {
+                var pOpenThread = OpenThread(ThreadAccess.SUSPEND_RESUME, false, (uint)thread.Id);
+
+                if (pOpenThread == IntPtr.Zero)
+                    break;
+
+                SuspendThread(pOpenThread);
+            }
+        }
+
+        public static void Resume(this Process process)
+        {
+            foreach (ProcessThread thread in process.Threads)
+            {
+                var pOpenThread = OpenThread(ThreadAccess.SUSPEND_RESUME, false, (uint)thread.Id);
+
+                if (pOpenThread == IntPtr.Zero)
+                    break;
+
+                ResumeThread(pOpenThread);
+            }
+        }
+    }
+}

Code/Flowframes.csproj

@@ -329,6 +329,7 @@
     <Compile Include="Data\PseudoUniqueFile.cs" />
     <Compile Include="Data\ResumeState.cs" />
     <Compile Include="Data\SubtitleTrack.cs" />
+    <Compile Include="Extensions\ProcessExtensions.cs" />
     <Compile Include="Forms\BatchForm.cs">
       <SubType>Form</SubType>
     </Compile>
@@ -377,7 +378,7 @@
     <Compile Include="MiscUtils\Benchmarker.cs" />
     <Compile Include="MiscUtils\FrameRename.cs" />
     <Compile Include="OS\AiProcess.cs" />
-    <Compile Include="ExtensionMethods.cs" />
+    <Compile Include="Extensions\ExtensionMethods.cs" />
     <Compile Include="Form1.cs">
       <SubType>Form</SubType>
     </Compile>
@@ -392,6 +393,7 @@
     <Compile Include="IO\Logger.cs" />
     <Compile Include="Magick\Converter.cs" />
     <Compile Include="Magick\Dedupe.cs" />
+    <Compile Include="OS\AiProcessSuspend.cs" />
     <Compile Include="OS\NvApi.cs" />
     <Compile Include="OS\OSUtils.cs" />
     <Compile Include="OS\Python.cs" />
@@ -461,6 +463,9 @@
   </ItemGroup>
   <ItemGroup>
     <Content Include="FlowframesLogo2021.ico" />
+    <None Include="Resources\baseline_play_arrow_white_48dp.png" />
+    <None Include="Resources\baseline_pause_white_48dp.png" />
+    <None Include="Resources\baseline_stop_white_48dp.png" />
     <None Include="Resources\devmode.bat" />
     <None Include="Resources\flowframesIcoNew-512px.png" />
     <None Include="Resources\flowframesIcoNew.png" />

Code/Form1.cs

@@ -68,13 +68,14 @@ async Task Checks()
         {
             try
             {
-                await Task.Delay(100);
-                await StartupChecks.SymlinksCheck();
-                await Updater.UpdateModelList();    // Update AI model list
-                await Updater.AsyncUpdateCheck();   // Check for Flowframes updates
-                await GetWebInfo.LoadNews(newsLabel);   // Loads news/MOTD
-                await GetWebInfo.LoadPatronListCsv(patronsLabel);   // Load patron list
+                //await Task.Delay(100);
+                Task.Run(() => Updater.UpdateModelList());
+                Task.Run(() => Updater.AsyncUpdateCheck());
+                Task.Run(() => GetWebInfo.LoadNews(newsLabel));
+                Task.Run(() => GetWebInfo.LoadPatronListCsv(patronsLabel));
                 await Python.CheckCompression();
+                await StartupChecks.SymlinksCheck();
+
             }
             catch (Exception e)
             {
@@ -106,6 +107,7 @@ void HandleArguments()
 
         public HTTabControl GetMainTabControl() { return mainTabControl; }
         public TextBox GetInputFpsTextbox () { return fpsInTbox; }
+        public Button GetPauseBtn() { return pauseBtn; }
 
         public bool IsInFocus() { return (ActiveForm == this); }
 
@@ -223,6 +225,7 @@ public void runBtn_Click(object sender, EventArgs e)
             if (!BatchProcessing.busy)      // Don't load values from gui if batch processing is used
                 Interpolate.current = GetCurrentSettings();
 
+            AiProcessSuspend.Reset();
             Interpolate.Start();
         }
 
@@ -324,12 +327,15 @@ public void SetWorking(bool state, bool allowCancel = true)
             Control[] controlsToDisable = new Control[] { runBtn, runStepBtn, stepSelector, settingsBtn };
             Control[] controlsToHide = new Control[] { runBtn, runStepBtn, stepSelector };
             progressCircle.Visible = state;
-            cancelBtn.Visible = state;
+            busyControlsPanel.Visible = state;
+
             foreach (Control c in controlsToDisable)
                 c.Enabled = !state;
+
             foreach (Control c in controlsToHide)
                 c.Visible = !state;
-            cancelBtn.Enabled = allowCancel;
+
+            busyControlsPanel.Enabled = allowCancel;
             Program.busy = state;
             Program.mainForm.UpdateStepByStepControls();
         }
@@ -399,8 +405,13 @@ public void DragDropHandler(string[] files)
 
         private void cancelBtn_Click(object sender, EventArgs e)
         {
-            SetTab("interpolation");
-            Interpolate.Cancel();
+            DialogResult dialog = MessageBox.Show($"Are you sure you want to cancel the interpolation?", "Are you sure?", MessageBoxButtons.YesNo);
+
+            if (dialog == DialogResult.Yes)
+            {
+                SetTab("interpolation");
+                Interpolate.Cancel();
+            }
         }
 
         private void discordBtn_Click(object sender, EventArgs e)
@@ -550,5 +561,10 @@ private void scnDetectTestBtn_Click(object sender, EventArgs e)
         {
             Magick.SceneDetect.RunSceneDetection(inputTbox.Text.Trim());
         }
+
+        private void pauseBtn_Click(object sender, EventArgs e)
+        {
+            AiProcessSuspend.SuspendResumeAi(!AiProcessSuspend.aiProcFrozen);
+        }
     }
 }

Code/IO/IOUtils.cs

@@ -747,7 +747,7 @@ public static void OverwriteFileWithText (string path, string text = "THIS IS A
 			}
 			catch (Exception e)
             {
-				Logger.Log($"OverwriteWithText failed for '{path}': {e.Message}");
+				Logger.Log($"OverwriteWithText failed for '{path}': {e.Message}", true);
             }
 		}