用C#捕捉电视卡的声音

Question

我编写了一个WPF应用程序,它通过C#代码从电视卡中捕获显示和声音.我可以从电视卡上看到显示器,但我无法从电视卡中获得任何声音.顺便说一句,我在Visual Studio 2010中使用.NET framework 3.5.我的问题是如何从电视卡中获取声音？

最后,我通过使用DirectX的DirectSound库尝试了类似下面的任何内容.但是,我收到了以下错误.

1. 最好的重载方法匹配 'Microsoft.DirectX.DirectSound.Device.SetCooperativeLevel(System.Windows.Forms.Control, Microsoft.DirectX.DirectSound.CooperativeLevel)'有一些无效的参数.
2. 参数1:无法转换'Wpfvideo.MainWindow'为 'System.Windows.Forms.Control'

码:

private DS.Device soundDevice;
private SecondaryBuffer buffer;
private ArrayList soundlist = new ArrayList();

private void InitializeSound()
{
     soundDevice = new DS.Device();
     soundDevice.SetCooperativeLevel(this, CooperativeLevel.Priority);

    BufferDescription description = new BufferDescription();
    description.ControlEffects = false;
    buffer = new SecondaryBuffer(CaptureDeviceName, description, soundDevice);
    buffer.Play(0, BufferPlayFlags.Default);
    SecondaryBuffer newshotsound = buffer.Clone(soundDevice);
    newshotsound.Play(0, BufferPlayFlags.Default);
} 

Answer 1

尝试这个：

var windowInteropHelper = new WindowInteropHelper(this);
soundDevice = new DS.Device();
soundDevice.SetCooperativeLevel(windowInteropHelper.Handle, CooperativeLevel.Priority);