c# - CSCore应用程序音频混音器名称+峰值

Question

我尝试获取processID的峰值(win7音频混音器中绿色条的电平)，例如5640-Spotify。

在互联网上搜索了一个好的图书馆。我找到了CSCore。

现在我有这个:

class Program
{
    static void Main(string[] args)
    {
        using (var sessionManager = GetDefaultAudioSessionManager2(DataFlow.Render))
        {
            using (var sessionEnumerator = sessionManager.GetSessionEnumerator())
            {
                foreach (var session in sessionEnumerator)
                {
                    using (var audioMeterInformation = session.QueryInterface<AudioMeterInformation>())
                    {
                        Console.WriteLine(audioMeterInformation.GetPeakValue()*100);
                    }

                }
            }
        }

        Console.ReadKey();
    }

    private static AudioSessionManager2 GetDefaultAudioSessionManager2(DataFlow dataFlow)
    {
        using (var enumerator = new MMDeviceEnumerator())
        {
            using (var device = enumerator.GetDefaultAudioEndpoint(dataFlow, Role.Multimedia))
            {
                Debug.WriteLine("DefaultDevice: " + device.FriendlyName);
                var sessionManager = AudioSessionManager2.FromMMDevice(device);
                return sessionManager;
            }
        }
    }

}
}

http://cscore.codeplex.com/的文档对我没有帮助。有人可以用我的代码给我一个例子，我如何获得这样的输出:

58,31232 ---进程ID --- Spotify

瞬间看起来像这样:

Answer 1

您可以将代码修改为以下形式(也可以查看cscore的单元测试):

class Program
{
    static void Main(string[] args)
    {
        using (var sessionManager = GetDefaultAudioSessionManager2(DataFlow.Render))
        using (var sessionEnumerator = sessionManager.GetSessionEnumerator())
        {
            foreach (var session in sessionEnumerator)
            {
                Assert.IsNotNull(session);

                using (var session2 = session.QueryInterface<AudioSessionControl2>())
                using (var audioMeterInformation = session.QueryInterface<AudioMeterInformation>())
                {   
                    Debug.WriteLine("Process: {0}; Peak: {1:P}", 
                        session2.Process == null ? String.Empty : session2.Process.MainWindowTitle,
                        audioMeterInformation.GetPeakValue()*100);
                }
            }
        }

        Console.ReadKey();
    }

    private static AudioSessionManager2 GetDefaultAudioSessionManager2(DataFlow dataFlow)
    {
        using (var enumerator = new MMDeviceEnumerator())
        {
            using (var device = enumerator.GetDefaultAudioEndpoint(dataFlow, Role.Multimedia))
            {
                Debug.WriteLine("DefaultDevice: " + device.FriendlyName);
                var sessionManager = AudioSessionManager2.FromMMDevice(device);
                return sessionManager;
            }
        }
    }
}