private void CaptureScreenTask()
{
while (running)
{
//检查是否有连接
lock (Program.mjpegServer.SocketList)
{
if (Program.mjpegServer.SocketList.Count == 0)
{
Thread.Sleep(1000 / Program.frame);
continue;
}
}
int previewGridCount = Program.gridX * Program.gridY;
int previewTotal = 0;
lock (screenDataList)
{
previewTotal = ((screenDataList.Count - 1) / previewGridCount) + 1;
}
for (int outputChannel = 0; outputChannel < previewTotal; outputChannel++)
{
Bitmap outputPreviewBitmap = GetScreenPreviewBitmap(outputChannel);
lock (outputPreviewBitmap)
{
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(outputPreviewBitmap);
//清空画布并以透明背景色填充
g.Clear(System.Drawing.Color.Transparent);
for (int oid = 1; oid <= previewGridCount; oid++)
{
int screenId = oid + outputChannel * previewGridCount;
RestfulScreenData restfulScreenData = GetRestfulScreenData(screenId);
if (restfulScreenData == null)
{
continue;
}
int previewStartId = ((screenId - 1) - outputChannel * previewGridCount);
int targetX = previewStartId % Program.gridX;
int targetY = previewStartId / Program.gridX;
//左右偏移
Rectangle captuRectangle = new Rectangle(int.Parse(restfulScreenData.x) - int.Parse(restfulScreenData.paddingLeft),
int.Parse(restfulScreenData.y),
int.Parse(restfulScreenData.width) + int.Parse(restfulScreenData.paddingLeft) + int.Parse(restfulScreenData.paddingRight),
int.Parse(restfulScreenData.height));
try
{
Bitmap screenBitmap = ImageHelper.CaptureScreen(captuRectangle);
//设置高质量插值法
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Default;
//设置高质量,低速度呈现平滑程度
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
Rectangle targetRectangle = new System.Drawing.Rectangle(
targetX * Program.previewWidth / Program.gridX,
targetY * Program.previewheight / Program.gridY, Program.previewWidth / Program.gridX,
Program.previewheight / Program.gridY);
ImageHelper.MakeThumbnail(targetRectangle, screenBitmap, g);
Console.WriteLine("###CaptureScreenTask previewStartId " + previewStartId + " targetRectangle.x " + targetRectangle.X + " targetRectangle.y " + targetRectangle.Y);
//是否分屏幕图片内存
screenBitmap.Dispose();
}
catch (Exception e)
{
ConsoleService.GetInstance().LogMsg(" CaptureScreenTask " + e.StackTrace, LogType.Error);
}
}
g.Dispose();
}
}
Thread.Sleep(1000 / Program.frame);
}
}
private void DoPreview(Socket web_client, string[] routePathParams)
{
if (routePathParams.Length < 4)
{
return;
}
try
{
//预监路径输出路数索引
string previewOutputChannel = routePathParams[2];
Console.WriteLine("Data Request previewOutputChannel :" + previewOutputChannel);
//报文头部
string head = Header();
byte[] headBytes = Encoding.UTF8.GetBytes(head);
web_client.Send(headBytes);
//根据预监输出图像路数索引值去预监图像服务查找图像数据
while (web_client.Connected)
{
Bitmap screenPreviewBitmap = PreviewImageService.GetInstance().GetScreenPreviewBitmap(int.Parse(previewOutputChannel));
lock (screenPreviewBitmap)
{
if (screenPreviewBitmap == null)
{
web_client.Close();
return;
}
EncoderParameters encoderParameters = new EncoderParameters(1);
EncoderParameter encoderParameter = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 50L);
encoderParameters.Param[0] = encoderParameter;
MemoryStream ms = new MemoryStream();
screenPreviewBitmap.Save(ms, GetImageCodecInfo(ImageFormat.Jpeg), encoderParameters);
byte[] screenBitmapBytes = ms.GetBuffer();
ms.Close();
ms.Dispose();
byte[] payloadarray = Encoding.ASCII.GetBytes(PayloadHeader(screenBitmapBytes.Length));
web_client.Send(payloadarray);
//图像数据
web_client.Send(screenBitmapBytes);
}
Thread.Sleep(1000 / Program.frame);
}
}
catch (Exception ex)
{
Console.WriteLine("处理http请求断开" + Environment.NewLine + "\t" + ex.Message);
}
finally
{
web_client.Close(10);
web_client.Dispose();
ConsoleService.GetInstance().LogMsg("web_client.Close ", LogType.Log);
}
}
/// <summary>
/// 接受处理http的请求
/// </summary>
/// <param name="ar"></param>
private void OnAccept(IAsyncResult ar)
{
Socket web_client = null;
try
{
Socket socket = ar.AsyncState as Socket;
web_client = socket.EndAccept(ar);
web_client.SendBufferSize = 1024;
web_client.SendTimeout = 10000;
socket.BeginAccept(new AsyncCallback(OnAccept), socket);
lock (_socketList)
{
if (_socketList.IndexOf(web_client) == -1)
{
_socketList.Add(web_client);
}
}
byte[] recv_Buffer = new byte[1024 * 640];
int recv_Count = web_client.Receive(recv_Buffer);
string recv_request = Encoding.UTF8.GetString(recv_Buffer, 0, recv_Count);
Console.WriteLine("Data Request:" + recv_request); //将请求显示到界面
ConsoleService.GetInstance().LogMsg("Data Request:" + recv_request, LogType.Log);
string routePath = RouteHandle(recv_request);
ConsoleService.GetInstance().LogMsg("Data Request routePath :" + routePath, LogType.Log);
Console.WriteLine("Data Request routePath :" + routePath);
//解析地址首字段 /preview/0/normal , /setting/padding/0/left/right , /heart/
string[] routePathParams = routePath.Split('/');
//参数问题
if (routePathParams.Length < 2)
{
web_client.Close(10);
}
else
{
string requestCmd = routePathParams[1];
if (requestCmd.Equals("preview"))
{
//预监
DoPreview(web_client, routePathParams);
}
else if (requestCmd.Equals("setting"))
{
//设置
DoSetting(web_client, routePathParams);
}
else if (requestCmd.Equals("heart"))
{
//设置
DoHeart(web_client, routePathParams);
}
}
}
catch (Exception ex)
{
Console.WriteLine("处理http请求断开" + Environment.NewLine + "\t" + ex.Message);
}
finally
{
lock (_socketList)
{
if (_socketList.IndexOf(web_client) >= 0)
{
_socketList.Remove(web_client);
}
}
web_client.Close(10);
web_client.Dispose();
ConsoleService.GetInstance().LogMsg("web_client.Close ", LogType.Log);
}
}
static void Main(string[] args)
{
ConsoleService.GetInstance().Init();
ConsoleService.GetInstance().LogMsg(" Start Mjpeg Server", LogType.Log);
string configXml = "./AppScreensSettings.xml";
if (args.Length >= 7)
{
port = int.Parse(args[0]);
gridX = int.Parse(args[1]);
gridY = int.Parse(args[2]);
previewWidth = int.Parse(args[3]);
previewheight = int.Parse(args[4]);
frame = int.Parse(args[5]);
configXml = args[6];
ConsoleService.GetInstance().LogMsg(" Start Mjpeg Server args " + args[0] + " " +
args[1] + " " +
args[2] + " " +
args[3] + " " +
args[4] + " " +
args[5] + " " +
args[6], LogType.Log);
}
else
{
//warnning
ConsoleService.GetInstance().LogMsg(" Start Mjpeg Server without args ", LogType.Log);
}
ConsoleService.GetInstance().LogMsg(" XmlDocument load " + configXml, LogType.Log);
try
{
var xmlDoc = new XmlDocument();
xmlDoc.Load(configXml);
XmlElement root = xmlDoc.DocumentElement;
XmlNodeList xmlScreenNodeList = root.SelectNodes("/AppSettings/Screes/Screen");
foreach (XmlNode screenNode in xmlScreenNodeList)
{
XmlNode curXmlNode = screenNode.FirstChild;
string id = curXmlNode.InnerText;
curXmlNode = curXmlNode.NextSibling;
string x = curXmlNode.InnerText;
curXmlNode = curXmlNode.NextSibling;
string y = curXmlNode.InnerText;
curXmlNode = curXmlNode.NextSibling;
string width = curXmlNode.InnerText;
curXmlNode = curXmlNode.NextSibling;
string height = curXmlNode.InnerText;
RestfulScreenData screenData = new RestfulScreenData();
screenData.id = id;
screenData.x = x;
screenData.y = y;
screenData.width = width;
screenData.height = height;
screenData.paddingRight = "0";
screenData.paddingLeft = "0";
screenNodeList.Add(screenData);
}
//启动预监服务器
mjpegServer = new MjpegServer(port);
mjpegServer.Start();
ConsoleService.GetInstance().LogMsg(" Start PreviewImageService", LogType.Log);
//启动预监画面服务
PreviewImageService.GetInstance().Init(screenNodeList);
}
catch (Exception e)
{
Console.WriteLine(e);
ConsoleService.GetInstance().LogMsg("Start Error " + e.Message, LogType.Error);
}
string cmd = Console.ReadLine();
while (!cmd.Equals("bye"))
{
cmd = Console.ReadLine();
}
}