81c3bcb71c
ImagesTcpServer can read from a path of images git-svn-id: http://find-object.googlecode.com/svn/trunk/find_object@354 620bd6b2-0a58-f614-fd9a-1bd335dccda9
93 lines
2.2 KiB
C++
93 lines
2.2 KiB
C++
/*
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* ImagesTcpServer.cpp
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*
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* Created on: 2014-05-21
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* Author: mathieu
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*/
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#include "ImagesTcpServer.h"
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#include <QtNetwork/QNetworkInterface>
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#include <QtNetwork/QTcpSocket>
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#include <QtGui/QTransform>
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#include "Settings.h"
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#include "QtOpenCV.h"
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ImagesTcpServer::ImagesTcpServer(float hz, const QString & path, QObject * parent) :
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QTcpServer(parent)
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{
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// Set camera parameters
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Settings::setCamera_4imageRate(hz);
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Settings::setCamera_5mediaPath(path);
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connect(this, SIGNAL(newConnection()), this, SLOT(addClient()));
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connect(&camera_, SIGNAL(imageReceived(const cv::Mat &)), this, SLOT(publishImage(const cv::Mat &)));
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}
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QHostAddress ImagesTcpServer::getHostAddress() const
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{
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QHostAddress hostAddress;
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QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses();
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// use the first non-localhost IPv4 address
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for (int i = 0; i < ipAddressesList.size(); ++i)
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{
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if (ipAddressesList.at(i) != QHostAddress::LocalHost && ipAddressesList.at(i).toIPv4Address())
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{
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hostAddress = ipAddressesList.at(i).toString();
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break;
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}
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}
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// if we did not find one, use IPv4 localhost
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if (hostAddress.isNull())
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{
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hostAddress = QHostAddress(QHostAddress::LocalHost);
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}
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return hostAddress;
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}
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quint16 ImagesTcpServer::getPort() const
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{
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return this->serverPort();
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}
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void ImagesTcpServer::publishImage(const cv::Mat & image)
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{
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QList<QTcpSocket*> clients = this->findChildren<QTcpSocket*>();
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if(clients.size())
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{
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std::vector<unsigned char> buf;
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cv::imencode(".png", image, buf);
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for(QList<QTcpSocket*>::iterator iter = clients.begin(); iter!=clients.end(); ++iter)
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{
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QByteArray block;
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QDataStream out(&block, QIODevice::WriteOnly);
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out.setVersion(QDataStream::Qt_4_0);
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out << (quint64)0;
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out.writeRawData((char*)buf.data(), (int)buf.size());
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out.device()->seek(0);
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out << (quint64)(block.size() - sizeof(quint64));
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(*iter)->write(block);
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}
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}
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else
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{
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printf("Paused...\n");
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camera_.pause();
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}
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}
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void ImagesTcpServer::addClient()
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{
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QTcpSocket * client = this->nextPendingConnection();
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connect(client, SIGNAL(disconnected()), client, SLOT(deleteLater()));
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if(!camera_.isRunning())
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{
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printf("Start...\n");
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camera_.start();
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}
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}
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