Inital commit

src/SoundBrowser/MainWindow.xaml.cs

@@ -0,0 +1,116 @@
+using CoreAudio;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Diagnostics;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace SoundBrowser
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        public MainWindow()
+        {
+            InitializeComponent();
+            dele = new WinEventDelegate(WinEventProc);
+            IntPtr m_hhook = SetWinEventHook(EVENT_SYSTEM_FOREGROUND, EVENT_SYSTEM_FOREGROUND, IntPtr.Zero, dele, 0, 0, WINEVENT_OUTOFCONTEXT);
+        }
+
+
+        WinEventDelegate dele = null;
+
+
+        delegate void WinEventDelegate(IntPtr hWinEventHook, uint eventType, IntPtr hwnd, int idObject, int idChild, uint dwEventThread, uint dwmsEventTime);
+
+        [DllImport("user32.dll")]
+        static extern IntPtr SetWinEventHook(uint eventMin, uint eventMax, IntPtr hmodWinEventProc, WinEventDelegate lpfnWinEventProc, uint idProcess, uint idThread, uint dwFlags);
+
+        private const uint WINEVENT_OUTOFCONTEXT = 0;
+        private const uint EVENT_SYSTEM_FOREGROUND = 3;
+
+        [DllImport("user32.dll")]
+        static extern IntPtr GetForegroundWindow();
+
+        [DllImport("user32.dll", SetLastError = true)]
+        static extern uint GetWindowThreadProcessId(IntPtr hWnd, out int processId);
+
+        [DllImport("user32.dll")]
+        static extern int GetWindowText(IntPtr hWnd, StringBuilder text, int count);
+
+        private static SimpleAudioVolume GetVolumeObject(Process process)
+        {
+            var deviceEnumerator = new MMDeviceEnumerator(Guid.NewGuid());
+
+            using var device = deviceEnumerator.GetDefaultAudioEndpoint(DataFlow.Render, Role.Multimedia);
+            using var manager = device.AudioSessionManager2;
+
+            var sessions = manager.Sessions;
+
+            foreach (var session in sessions)
+            {
+                if (session.ProcessID == process.Id)
+                {
+                    return session.SimpleAudioVolume;
+                }
+
+                var audioProcess = Process.GetProcessById((int)session.ProcessID);
+                if(audioProcess?.ProcessName == process.ProcessName)
+                {
+                    Console.WriteLine(process.MainModule.FileVersionInfo.FileDescription);
+                    return session.SimpleAudioVolume;
+                }
+            }
+            return null;
+        }
+
+
+        SimpleAudioVolume _current;
+
+        private string GetActiveWindowTitle()
+        {
+            const int nChars = 256;
+            IntPtr handle = IntPtr.Zero;
+            StringBuilder Buff = new StringBuilder(nChars);
+            handle = GetForegroundWindow();
+
+            if (handle <= 0)
+            {
+                return "";
+            }
+
+            var tid = GetWindowThreadProcessId(handle, out var pid);
+            var process = Process.GetProcessById(pid);
+
+            var vol = GetVolumeObject(process);
+            _current = vol;
+            if(vol != null)
+            {
+                vol.Mute = true;
+            }
+
+            return $"{pid} vol:{vol?.MasterVolume ?? -1} - {process.ProcessName}";
+        }
+
+
+        public void WinEventProc(IntPtr hWinEventHook, uint eventType, IntPtr hwnd, int idObject, int idChild, uint dwEventThread, uint dwmsEventTime)
+        {
+            _tf.Text = GetActiveWindowTitle();
+        }
+    }
+
+}