使用c#检查音频是否在PC上工作

本文关键字：PC 工作 是否 检查 音频 使用 | 更新日期: 2023-09-27 18:14:25

我想播放视频，但在播放视频之前，我想知道连接到系统的音频设备是否正常工作。

  public static bool IsAudioDeviceAvailable()
    {
        ManagementObjectSearcher objSearcher = new ManagementObjectSearcher("SELECT * FROM Win32_SoundDevice");
        ManagementObjectCollection objCollection = objSearcher.Get();
        if(objCollection.Count > 0)
        {
            return true;
        }
        else
        {
            return false;
        }
    }

但是行不通

我使用user3060520建议的解决方案

检测音频输入&连接到系统的输出设备

  public static bool IsAudioDeviceAvailable()
    {
        string[] mydevices = null;
        mydevices = Win32.GetSoundDevices();
        if (mydevices.Count() > 0)
        {
            return true;
        }
        else
        {
            return false;
        }
    }
}

public class Win32
{
    [DllImport("winmm.dll", SetLastError = true)]
    static extern uint waveOutGetNumDevs();
    [DllImport("winmm.dll", SetLastError = true, CharSet = CharSet.Auto)]
    public static extern uint waveOutGetDevCaps(uint hwo, ref WAVEOUTCAPS pwoc, uint cbwoc);
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
    public struct WAVEOUTCAPS
    {
        public ushort wMid;
        public ushort wPid;
        public uint vDriverVersion;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
        public string szPname;
        public uint dwFormats;
        public ushort wChannels;
        public ushort wReserved1;
        public uint dwSupport;
    }
    public static string[] GetSoundDevices()
    {
        uint devices = waveOutGetNumDevs();
        string[] result = new string[devices];
        WAVEOUTCAPS caps = new WAVEOUTCAPS();
        for (uint i = 0; i < devices; i++)
        {
            waveOutGetDevCaps(i, ref caps, (uint)Marshal.SizeOf(caps));
            result[i] = caps.szPname;
        }
        return result;
    }

我还想补充的是，它将不工作的虚拟音频设备。

使用c#检查音频是否在PC上工作

您还可以使用devcon.exe通过ID/class等查找设备并解析其状态。如:

devcon.exe status =media         //this will find all media devices and show its tatus
devcon.exe status [Device HW ID] //this will find device by id and show its status
样本输出:

devcon.exe status [Device HW ID]
Device HW ID
    Name: Realtek High Definition Audio
    Driver is running.

现在你只需要解析输出字符串寻找"驱动程序正在运行"或类似的东西来检测设备驱动程序是否正常工作。你可以在这里找到更多关于devcon的信息

相关文章：