纯python实现的视频监控客户端软件（三）

继续

我们继续上篇文章继续贴代码，以下部分是如何用诺基亚的QT5来创建一个界面应用程序，带输入框、按钮、文本区，以及视频显示区。

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class ClientDemo(QWidget):

def __init__(self):

super().__init__()

#Init SDK

self.sdk = HCNetSDK()

self.sdk.NET_DVR_Init()

self.sdk.NET_DVR_SetReconnect()

self.lUserID = -1

self.lRealHandle = -1

#Dialog

self.resize(1300, 850)

self.setWindowTitle(‘ClientDemo’)

#Layout

self.hbl = QHBoxLayout()

self.hbl2 = QHBoxLayout()

self.hbl3 = QHBoxLayout()

self.hbl4 = QHBoxLayout()

self.vbl = QVBoxLayout()

self.vbl.addLayout(self.hbl)

self.vbl.addLayout(self.hbl2)

self.vbl.addLayout(self.hbl3)

self.vbl.addLayout(self.hbl4)

self.setLayout(self.vbl)

#Login Infomation

self.lbIP = QLabel(‘IP’)

self.eIP = QLineEdit()

self.lbPort = QLabel(‘Port’)

self.ePort = QLineEdit()

self.lbUser = QLabel(‘User’)

self.eUser = QLineEdit()

self.lbPassword = QLabel(‘Password’)

self.ePassword = QLineEdit()

self.ePassword.setEchoMode(QLineEdit.Password)

self.lbChannel = QLabel(‘Channel’)

self.eChannel = QLineEdit()

self.hbl.addWidget(self.lbIP)

self.hbl.addWidget(self.eIP)

self.hbl.addWidget(self.lbPort)

self.hbl.addWidget(self.ePort)

self.hbl.addWidget(self.lbUser)

self.hbl.addWidget(self.eUser)

self.hbl.addWidget(self.lbPassword)

self.hbl.addWidget(self.ePassword)

self.hbl.addWidget(self.lbChannel)

self.hbl.addWidget(self.eChannel)

#Button

self.btnVersion = QPushButton(‘Version’)

self.btnVersion.clicked.connect(self.onVersion)

self.hbl2.addWidget(self.btnVersion)

self.btnLogin = QPushButton(‘Login’)

self.btnLogin.clicked.connect(self.onLogin)

self.hbl2.addWidget(self.btnLogin)

self.btnLogout = QPushButton(‘Logout’)

self.btnLogout.clicked.connect(self.onLogout)

self.hbl2.addWidget(self.btnLogout)

self.btnLive = QPushButton(‘Live’)

self.btnLive.clicked.connect(self.onLive)

self.hbl2.addWidget(self.btnLive)

self.btnCloseLive = QPushButton(‘Close Live’)

self.btnCloseLive.clicked.connect(self.onCloseLive)

self.hbl2.addWidget(self.btnCloseLive)

#Screen

self.Screen = QTextEdit()

self.vbl.addWidget(self.Screen)

#Load Config

self.LoadConfig()

def text(self, info):

self.Screen.setText(info)

def closeEvent(self, event):

self.SaveConfig()

event.accept()

def checkLoginInfo(self):

ip = self.eIP.text()

port = self.ePort.text()

user = self.eUser.text()

password = self.ePassword.text()

if ” == ip or ” == port or ” == user or ” == password:

return False

if not port.isdigit():

return False

return True

def checkChannelInfo(self):

channel = self.eChannel.text()

if ” == channel or not channel.isdigit():

return False

return True

def checkVideoParams(self):

bright = self.eBright.text()

contrast = self.eContrast.text()

saturation = self.eSaturation.text()

hue = self.eHue.text()

if ” == bright or not bright.isdigit():

return False

if ” == contrast or not contrast.isdigit():

return False

if ” == saturation or not saturation.isdigit():

return False

if ” == hue or not hue.isdigit():

return False

return True

def SaveConfig(self):

if self.checkLoginInfo() and self.checkLoginInfo():

ip = self.eIP.text()

port = self.ePort.text()

user = self.eUser.text()

password = self.ePassword.text()

channel = self.eChannel.text()

di = dict(ip=ip, port=port, user=user, password=password, channel=channel)

path = APP_PATH + ‘\clientdemo.conf’

with open(path, ‘wb’) as f:

pickle.dump(di, f)

def LoadConfig(self):

try:

path = APP_PATH + ‘\clientdemo.conf’

with open(path, ‘rb’) as f:

di = pickle.load(f)

self.eIP.setText(di[‘ip’])

self.ePort.setText(di[‘port’])

self.eUser.setText(di[‘user’])

self.ePassword.setText(di[‘password’])

self.eChannel.setText(di[‘channel’])

except Exception as e:

print(str(e))

def onVersion(self):

self.Screen.clear()

ver = hex(self.sdk.NET_DVR_GetSDKVersion())

build = hex(self.sdk.NET_DVR_GetSDKBuildVersion())

self.text(‘SDK Version: ‘ + str(ver) + ‘rn’ + ‘Build Version: ‘ + str(build))

def onLogin(self):

if -1 == self.lUserID:

if self.checkLoginInfo():

self.lUserID = self.sdk.NET_DVR_Login(self.eIP.text(), int(self.ePort.text()), self.eUser.text(), self.ePassword.text())

if -1 != self.lUserID:

self.text(‘Login was successful’)

else:

self.text(‘Login was failed, Error Code: ‘ + str(self.sdk.NET_DVR_GetLastError()))

else:

self.text(‘Please input the correct parameters before login’)

else:

self.text(‘You have already logined’)

def onLogout(self):

if -1 != self.lUserID:

self.sdk.NET_DVR_Logout(self.lUserID)

self.lUserID = -1

self.text(‘Logout was successful’)

else:

self.text(‘Now you are in logout status’)

def onLive(self):

if -1 != self.lUserID:

if self.checkChannelInfo():

if -1 != self.lRealHandle:

self.sdk.NET_DVR_StopRealPlay(self.lRealHandle)

self.lRealHandle = -1

self.lRealHandle = self.sdk.NET_DVR_RealPlay(self.lUserID, int(self.eChannel.text()), self.Screen.winId())

if -1 != self.lRealHandle:

self.text(‘Live was successful’)

else:

self.text(‘Live was failed, Error Code: ‘ + str(self.sdk.NET_DVR_GetLastError()))

else:

self.text(‘Please input the correct parameters before live’)

else:

self.text(‘You have to login first’)

def onCloseLive(self):

if -1 != self.lRealHandle:

self.sdk.NET_DVR_StopRealPlay(self.lRealHandle)

self.lRealHandle = -1

self.Screen.clear()

self.text(‘Live closed’)

else:

self.text(‘No any live opened’)

app = QApplication(sys.argv)

dlg = ClientDemo()

dlg.show()

sys.exit(app.exec_())

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如何使用

所有 test.py 的代码，全部贴出，你只需要拷贝运行即可，运行后会得到如上图的一个对话框，输入摄像机的IP地址、端口、用户名、密码、通道 ，首先点击 Login 登录，成功后，然后点击 Live按钮查看实时预览，就可以看到视频了。

结语

今天的内容来得简单粗暴，如果有问题可以在留言区留言，向你们要个大大的红星赞可以吗？