C# 調用AForge類庫操做攝像頭

不少都是C#調用window API 發送SendMessage,實現操做攝像頭，可是C#調用window API的時候由於驅動的問題，老是彈出視頻選擇對話框，讓人非常無語，看到大牛們有的截獲到了window消息，而後模擬點擊肯定按鈕，這是在是不敢恭維啊，還有的大牛根據API原型重寫了，至於我是一隻IT小小鳥了，而後在繼續百度，找到了一個AForge強大的C#類庫，最後終於搞定了，接下來將我拙劣的代碼部分貼出來，以便同行或者須要的朋友學習交流，

首先用到AForge類庫下載地址：http://www.aforgenet.com/

而後引用AForge,AForge.Controls(這個是控件，能夠添加到工具箱中),AForge.Imaging,AForge.Video,AForge.Video.DirectShow;

而後直接上代碼

private FilterInfoCollection videoDevices;
private VideoCaptureDevice videoSource;
public int selectedDeviceIndex = 0;

 

下面是獲取設備

public FilterInfoCollection GetDevices()
        {
            try
            {
                //枚舉全部視頻輸入設備
                videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
                if (videoDevices.Count != 0)
                {
                    LogClass.WriteFile("已找到視頻設備.");
                    return videoDevices;
                }
                else
                    return null;
            }
            catch (Exception ex)
            {
                LogClass.WriteFile("error:沒有找到視頻設備！具體緣由：" + ex.Message);
                return null;
            }
        }

選擇設備，而後鏈接攝像頭

<p> /// <summary>
        /// 鏈接視頻攝像頭
        /// </summary>
        /// <param name="deviceIndex"></param>
        /// <param name="resolutionIndex"></param>
        /// <returns></returns>
        public VideoCaptureDevice VideoConnect(int deviceIndex = 0, int resolutionIndex = 0)
        {
            if (videoDevices.Count <= 0)
                return null;
            selectedDeviceIndex = deviceIndex;
            videoSource = new VideoCaptureDevice(videoDevices[deviceIndex].MonikerString);</p><p>            return videoSource;
        }</p>
//抓圖，拍照，單幀

public void GrabBitmap(string path)
{
if (videoSource == null)
return;
g_Path = path;
videoSource.NewFrame += new NewFrameEventHandler(videoSource_NewFrame);
}

 

void videoSource_NewFrame(object sender, AForge.Video.NewFrameEventArgs eventArgs)
{
Bitmap bmp = (Bitmap)eventArgs.Frame.Clone();
string fullPath = path + "temp\\";
if (!Directory.Exists(fullPath))
Directory.CreateDirectory(fullPath);
string img = fullPath + DateTime.Now.ToString("yyyyMMdd hhmmss") + ".bmp";
bmp.Save(img);
//若是這裏不寫這個，一下子會不停的拍照，
videoSource.NewFrame -= new NewFrameEventHandler(videoSource_NewFrame);
}

這樣就完成了操做攝像頭的工做

可是發現一個問題，若是要拍照獲得的照片先要處理在保存，這裏就有問題了，因此須要在界面前臺中添加控件，醫用AForge.Controls,而後添加到工具箱，而後將VideoSourcePlayer控件拖到窗體中，想要獲得單張圖像處理：

Bitmap bmp = videoSourcePlayer1.GetCurrentFrame();