public Device[] GetDevices(int deviceType)
{
if (!_meetingManager.IsServierStarted)
{
return(Device.EmptyDevices);
}
var deviceListPointer = IntPtr.Zero;
try
{
int maxDeviceCount = 10, getDeviceCount = 0;
var deviceInfoByte = Marshal.SizeOf(typeof(DeviceInfo));
var maxDeviceBytes = deviceInfoByte * maxDeviceCount;
deviceListPointer = Marshal.AllocHGlobal(maxDeviceBytes);
var result = MeetingAgent.GetDeviceList(deviceType, deviceListPointer, maxDeviceCount,
ref getDeviceCount);
if (result != 0)
{
return(Device.EmptyDevices);
}
Device[] devices = new Device[getDeviceCount];
for (var i = 0; i < getDeviceCount; i++)
{
var pointer = (IntPtr)(deviceListPointer.ToInt64() + i * deviceInfoByte);
DeviceInfo deviceInfo = (DeviceInfo)Marshal.PtrToStructure(pointer, typeof(DeviceInfo));
devices[i] = new Device()
{
IsDefault = deviceInfo.m_isDefault == 1,
Name = deviceInfo.m_szDevName
};
}
return(devices);
}
catch (Exception ex)
{
Log.Logger.Error($"GetDevices({deviceType}) exception：{ex}");
return(Device.EmptyDevices);
}
finally
{
if (deviceListPointer != IntPtr.Zero)
{
Marshal.FreeHGlobal(deviceListPointer);
}
}
}
