shipin TCP.zip_QT 视频_QT 通信_QT视频通信_qt视频_基于Qt的简易TCP视频通信

#include "cserver.h" #include "ui_cserver.h" CServer::CServer(QWidget *parent) : QWidget(parent), ui(new Ui::CServer) { ui->setupUi(this); tcpServer = new QTcpServer(this); //tcpServerConnection = new QTcpSocket(this); image = new QImage(); if(!tcpServer->listen(QHostAddress::Any, 5566)) { QMessageBox::critical(this, tr("fortune server"), tr("无法开启服务器:%l").arg( tcpServer->errorString())); close(); return; } //信号 connect(tcpServer, SIGNAL(newConnection()), this, SLOT(sendFrotune())); } CServer::~CServer() { delete ui; delete tcpServer; delete image; //delete tcpServerConnection; } //连接失败反馈 void CServer::displayError(QAbstractSocket::SocketError) { tcpServerConnection->close(); ui->lbl_msg->setText("已断开连接！"); } //构建连接，通过信号触发函数 void CServer::sendFrotune() { baSize = 0; tcpServerConnection = tcpServer->nextPendingConnection(); connect(tcpServerConnection, SIGNAL(readyRead()), this, SLOT(receiveData())); connect(tcpServerConnection, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(displayError(QAbstractSocket::SocketError))); } //服务器内处理图片 QByteArray CServer::getData(QString fromImg) { QImage image(fromImg); QByteArray block; QBuffer buffer(&block); image.save(&buffer, "JPG"); QByteArray cc = qCompress(block, 1); QByteArray hh; hh = cc.toBase64(); return hh; } //接收数据 void CServer::receiveData() { ui->lbl_test->setText("111"); //***** QByteArray message; QDataStream in(tcpServerConnection); in.setVersion(QDataStream::Qt_5_6); //判断接收的数据是否有两字节（文件大小信息） //如果有则保存到basize变量中，没有则返回，继续接收数据 if(baSize == 0) { if(tcpServerConnection->bytesAvailable() < (int)sizeof(quint64)) { return; } in >> baSize; } //判断是否全部接受 if(tcpServerConnection->bytesAvailable() < baSize) { return; } in >> message; //showImage(message); ui->lbl_test->setText(QString(message)); //***** } //转码并显示图像 void CServer::showImage(QByteArray ba) { QString ss = QString::fromLatin1(ba.data(), ba.size()); QByteArray rc; rc = QByteArray::fromBase64(ss.toLatin1()); QByteArray rdc = qUncompress(rc); //解压缩 QImage image; image.loadFromData(rdc); ui->lbl_camera->setPixmap(QPixmap::fromImage(image)); ui->lbl_msg->setText("视频播放中！"); update(); }