/// <summary>
/// 刷新设备状态
/// </summary>
public void RefreshDevice(CameraDeviceManager cameraDeviceManager)
{
//刷新设备的连接状态
bool isChanged = cameraDeviceManager.DetectState();
if (isChanged)
{
//用界面线程来对_currentCameraDevice进行设置，防止设置对_currentCameraDevice设置时的多线程问题
AppThread.Instance.Invoke(() =>
{
if (cameraDeviceManager.DefaultCameraDevice != null)
{
_currentCameraDevice = cameraDeviceManager.DefaultCameraDevice;
Start();
}
else
{
Stop();
_currentCameraDevice = null;
}
});
}
}
private bool InnerDetectState()
{
CameraDeviceList.Clear();
//获取所有设备
FilterInfoCollection _filterInfoCollection = new FilterInfoCollection(FilterCategory.VideoInputDevice);
if (_filterInfoCollection.Count > 0)
{
foreach (FilterInfo filterInfo in _filterInfoCollection)
{
CameraDevice cameraDevice = new CameraDevice(filterInfo.MonikerString);
CameraDeviceList.Add(cameraDevice);
}
}
//设置DefaultCameraDevice并返回状态是否变化
if (DefaultCameraDevice == null)
{
if (CameraDeviceList.Count > 0)
{
DefaultCameraDevice = CameraDeviceList[0];
return(true);
}
return(false);
}
else
{
foreach (CameraDevice device in CameraDeviceList)
{
if (device.Name == DefaultCameraDevice.Name)
{
return(false);
}
}
DefaultCameraDevice = null;
return(true);
}
}
