public void CreateLiveScreen(ICameraModel camera)
{
if (Created == null || SendMessage == null)
{
throw new NullReferenceException("Created or SendMessage is null");
}
Socket sock;
string hostName = "";
Item cameraItem = Configuration.Instance.GetItem(camera.Id);
string token = _loginSettings.Token;
Debug.WriteLine("Camera Id: " + cameraItem.FQID.ToString());
try
{
Item recoder = cameraItem.GetParent();
hostName = recoder.Properties["Address"];
int port = 80; // По умолчаю задаем 80 порт
Int32.TryParse(recoder.Properties["Port"], out port);
sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ipe = new IPEndPoint(PrintScreenUtils.ToIpv4(hostName), port);
sock.Connect(ipe);
}
catch (Exception e)
{
Debug.WriteLine("Не удалось открыть соединение: {0}", e.Message);
SendMessage?.Invoke(CONNECTION_FAILED);
return;
}
Progress?.Invoke(0.14f);
//Строим запрос запрос в формате «Image Server API»
string sendString = string.Format(
"<?xml version=\"1.0\" encoding=\"utf-8\"?><methodcall><requestid>0</requestid>" +
"<methodname>connect</methodname><username></username><password></password>" +
"<cameraid>{0}</cameraid><alwaysstdjpeg>yes</alwaysstdjpeg>" +
"<connectparam>id={1}&connectiontoken={2}" +
"</connectparam></methodcall>\r\n\r\n",
cameraItem.FQID.ObjectId, cameraItem.FQID.ObjectId, token);
// Конвертируем запрос в UTF 8 и отправляем его
Byte[] bytesToSend = Encoding.UTF8.GetBytes(sendString);
int bs = sock.Send(bytesToSend, bytesToSend.Length, 0); // bs -чисто отправленных байтов
if (bs != bytesToSend.Length)
{
SendMessage(NO_CON_REQUEST);
return;
}
Progress?.Invoke(0.28f);
// Подготавливаемся к ответу
int maxbuf = 1024 * 500; // Задаем размер буфера
Byte[] bytesReceived = new Byte[maxbuf];
int bytes = PrintScreenUtils.RecvUntilCrLfCrLf(sock, bytesReceived, 0, maxbuf);
if (bytes == 0)
{
SendMessage?.Invoke(NO_CON_RESPONSE);
return;
}
Progress?.Invoke(0.42f);
string stringReceived = Encoding.UTF8.GetString(bytesReceived, 0, bytes);
// Смотрим выполнилось соединение
bool authenticated = false;
XmlDocument doc = new XmlDocument();
doc.LoadXml(stringReceived);
XmlNodeList nodes = doc.GetElementsByTagName("connected");
foreach (XmlNode node in nodes)
{
if (node.InnerText.ToLower() == "yes")
{
authenticated = true;
}
}
if (!authenticated)
{
SendMessage(AUTH_FAILED);
return;
}
Progress?.Invoke(0.60f);
// Cтроим запрос LIVE запрос
sendString = string.Format("<?xml version=\"1.0\" encoding=\"utf-8\"?><methodcall><requestid>1</requestid>" +
"<methodname>live</methodname>" +
// "<sendinitialimage>no</sendinitialimage>" +
"<compressionrate>80</compressionrate>" +
"</methodcall>\r\n\r\n"
);
bytesToSend = Encoding.UTF8.GetBytes(sendString);
bs = sock.Send(bytesToSend, bytesToSend.Length, 0);
if (bs != bytesToSend.Length)
{
SendMessage(NO_CREATE_IMG_REQUEST);
return;
}
Progress?.Invoke(0.74f);
int gotImage = 5;
while (gotImage > 0)
{
gotImage--;
bytes = PrintScreenUtils.RecvUntilCrLfCrLf(sock, bytesReceived, 0, maxbuf);
if (bytes == 0)
{
SendMessage(NO_CREATE_IMG_RESPONSE);
return;
}
stringReceived = Encoding.UTF8.GetString(bytesReceived, 0, bytes);
Console.WriteLine(stringReceived);
// Находим загловок изображения
if (bytesReceived[0] != 'I')
{
continue;
}
ImageInfo h = PrintScreenUtils.ParseHeader(bytesReceived, 0, bytes);
int expectedSize = h.Length + 4;
if (expectedSize > maxbuf)
{
maxbuf = expectedSize;
bytesReceived = new Byte[maxbuf];
}
bytes = PrintScreenUtils.RecvFixedLenth(sock, bytesReceived, 0, expectedSize);
sock.Close();
if (!(bytes == expectedSize || bytes == -expectedSize))
{
SendMessage(UNCORRECT_RESPONSE_IMG);
return;
}
Progress?.Invoke(0.92f);
int startJpegData = -1;
int lengthJpegData = -1;
if (bytesReceived[0] == 0xFF && bytesReceived[1] == 0xD8)
{
startJpegData = 0;
lengthJpegData = h.Length;
}
else
{
// There is a 36 bytes "Milestone Generic-Byte-Data" header in front of the JPEG
if (bytesReceived[36] == 0xFF && bytesReceived[37] == 0xD8)
{
startJpegData = 36;
lengthJpegData = h.Length - 36;
}
}
if (startJpegData == -1)
{
break;
}
Progress?.Invoke(1.0f);
Byte[] jpeg = new Byte[lengthJpegData];
Array.Copy(bytesReceived, startJpegData, jpeg, 0, lengthJpegData);
Created?.Invoke(jpeg, "jpeg");
return;
}
SendMessage?.Invoke("Не удалось получить изображение!");
}
