FocusVolumeControlPlugin/src/SoundBrowser/MainWindow.xaml.cs

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3.7 KiB
C#
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2023-08-06 13:46:36 -06:00
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();
}
}
}