二、JAVA调用海康威视SDK实现摄像头预览完整版

接上一章：一、JAVA调用海康威视SDK实现摄像头预览

1. 添加摄像头信息输入框
2. 添加视频控制按钮
3. 添加截图功能

代码：

PreView.java

package com.kx.hcws;

import javax.swing.JFrame;
import javax.swing.JPopupMenu;

import com.kx.hcws.sdk.HCNetSDK;
import com.kx.hcws.sdk.HCNetSDKManger;
import com.kx.hcws.ui.Player;

public class PreView {
	// private static String ip;
	// private static String username;
	// private static String password;

	public static void main(String[] args) {
		// 确保一个漂亮的外观风格
		JFrame.setDefaultLookAndFeelDecorated(true);
		JPopupMenu.setDefaultLightWeightPopupEnabled(false);// 防止被播放窗口(AWT组件)覆盖

		// 显示应用 GUI
		javax.swing.SwingUtilities.invokeLater(new Runnable() {
			@Override
			public void run() {
				// 初始化海康播放器
				HCNetSDKManger.init();
				HCNetSDK.INSTANCE.NET_DVR_Init();
				HCNetSDK.INSTANCE.NET_DVR_SetConnectTime(5000, 5);
				HCNetSDK.INSTANCE.NET_DVR_SetReconnect(1000, true);

				/*
				 * IP地址：摄像头IP地址。 用户名：摄像头登录用户名。 密码：摄像头验证码。 摄像头编号：可以自定义。
				 * 
				 * "192.168.2.18", "admin", "axjy123456", 8000, 1L
				 */
				new Player();
			}
		});
	}
}

HcPlayerPanel.java

package com.kx.hcws.ui;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;

import javax.swing.JOptionPane;
import javax.swing.JPanel;

import com.kx.hcws.sdk.HCNetSDK;
import com.kx.hcws.sdk.HCNetSDK.FExceptionCallBack;
import com.kx.hcws.sdk.HCNetSDKManger;
import com.kx.hcws.sdk.PlayCtrl;
import com.sun.jna.Native;
import com.sun.jna.NativeLong;
import com.sun.jna.Pointer;
import com.sun.jna.examples.win32.W32API.HWND;
import com.sun.jna.ptr.IntByReference;
import com.sun.jna.ptr.NativeLongByReference;

public class HcPlayerPanel extends JPanel {
	private static org.apache.log4j.Logger logger = org.apache.log4j.Logger.getLogger(HcPlayerPanel.class);

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	// 播放控制
	private static PlayCtrl playControl = PlayCtrl.INSTANCE;

	private String m_sDeviceIP;
	private String username;
	private String password;
	private int port;
	private Long deviceId = 1L;

	private long iChannelNum;

	private boolean isplay = false;

	// 用户参数
	private HCNetSDK.NET_DVR_CLIENTINFO m_strClientInfo;
	// 预览句柄
	private NativeLong lPreviewHandle = new NativeLong(-1);
	// 播放界面
	public java.awt.Panel panelRealplay = new java.awt.Panel();
	public javax.swing.JPanel jPanelRealplayArea = new javax.swing.JPanel();
	// 设备指针
	private NativeLongByReference devicePoint;
	// 播放端口
	private NativeLongByReference m_lPort = new NativeLongByReference(new NativeLong(-1));
	// 异常回调
	private FExceptionCallBack exceptionCallBack = new FExceptionCallBack() {
		@Override
		public void invoke(int dwType, NativeLong lUserID, NativeLong lHandle, Pointer pUser) {
			NativeLong deviceid = pUser.getNativeLong(0);

			System.out.println("预览异常：dwType=" + dwType + ",lUserID=" + lUserID + ",lHandle=" + lHandle + ",pUser="
					+ deviceid.intValue());

			// EXCEPTION_EXCHANGE = 0x8000;// 用户交互时异常
			// EXCEPTION_AUDIOEXCHANGE = 0x8001;//语音对讲异常
			// EXCEPTION_ALARM = 0x8002;// 报警异常
			// EXCEPTION_PREVIEW = 0x8003;// 网络预览异常
			// EXCEPTION_SERIAL = 0x8004;// 透明通道异常
			// EXCEPTION_RECONNECT = 0x8005; // 预览时重连
			// EXCEPTION_ALARMRECONNECT = 0x8006;//报警时重连
			// EXCEPTION_SERIALRECONNECT = 0x8007;//透明通道重连
			// EXCEPTION_PLAYBACK = 0x8010;// 回放异常
			// EXCEPTION_DISKFMT = 0x8011;// 硬盘格式化
			if (dwType == HCNetSDK.EXCEPTION_ALARM || dwType == HCNetSDK.EXCEPTION_RECONNECT
					|| dwType == HCNetSDK.EXCEPTION_ALARMRECONNECT || dwType == HCNetSDK.EXCEPTION_SERIALRECONNECT
					|| dwType == HCNetSDK.EXCEPTION_PLAYBACK || dwType == 32971 || dwType == 32776 || dwType == 32789
					|| dwType == 32790 || dwType == 32791 || dwType == 32776 || dwType == 32793 || dwType == 32800
					|| dwType == 32804 || dwType == 32805 || dwType == 32832 || dwType == 32833 || dwType == 32834) {
				return;
			}
		}
	};

	public HcPlayerPanel() {
		init();
	}

	/**
	 * 开始，传入对应参数
	 * 
	 * @param m_sDeviceIP
	 * @param username
	 * @param password
	 * @param port
	 * @param deviceId
	 */
	public void start(String m_sDeviceIP, String username, String password, int port, Long deviceId) {
		this.m_sDeviceIP = m_sDeviceIP;
		this.username = username;
		this.password = password;
		this.port = port;
		this.deviceId = deviceId;
	}

	/**
	 * 初始化组件
	 */
	private void init() {
		panelRealplay.setBackground(Color.BLACK);
		jPanelRealplayArea.setBackground(Color.BLACK);
		javax.swing.GroupLayout panelRealplayLayout = new javax.swing.GroupLayout(panelRealplay);
		panelRealplay.setLayout(panelRealplayLayout);
		javax.swing.GroupLayout jPanelRealplayAreaLayout = new javax.swing.GroupLayout(jPanelRealplayArea);
		jPanelRealplayArea.setLayout(jPanelRealplayAreaLayout);
		jPanelRealplayAreaLayout.setHorizontalGroup(
				jPanelRealplayAreaLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addComponent(
						panelRealplay, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE,
						javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE));
		jPanelRealplayAreaLayout.setVerticalGroup(jPanelRealplayAreaLayout
				.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addComponent(panelRealplay,
						javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE));
		devicePoint = new NativeLongByReference(new NativeLong(deviceId));// 设备编号

		panelRealplay.setPreferredSize(new Dimension(getWidth(), getHeight()));

		// 注册异常信息
		HCNetSDKManger.hCNetSDK.NET_DVR_SetExceptionCallBack_V30(0, 0, exceptionCallBack, devicePoint.getPointer());
	}

	/**
	 * 开始播放
	 */
	public void play() {
		NativeLong lUserID = new NativeLong(-1);// 用户句柄
		if (lUserID.longValue() > -1) {// 不注销
			// 先注销
			HCNetSDKManger.hCNetSDK.NET_DVR_Logout_V30(lUserID);
			lUserID = new NativeLong(-1);
		}
		// 注册
		HCNetSDK.NET_DVR_DEVICEINFO_V30 m_strDeviceInfo = new HCNetSDK.NET_DVR_DEVICEINFO_V30();
		lUserID = HCNetSDKManger.hCNetSDK.NET_DVR_Login_V30(m_sDeviceIP, (short) port, username, password,
				m_strDeviceInfo);
		long userID = lUserID.longValue();
		if (userID == -1) {
			System.out.println(HCNetSDKManger.hCNetSDK.NET_DVR_GetLastError());
			System.out.println("设备注册失败：" + m_sDeviceIP + "--" + username + "--" + password + "--" + port);
			JOptionPane.showMessageDialog(this, "注册失败");
			return;
		} else {
			// CreateDeviceTree();
		}

		if (lUserID == null || lUserID.intValue() == -1) {
			logger.info("注册失败");
			return;
		}

		panelRealplay.setPreferredSize(new Dimension(getWidth(), getHeight()));
		removeAll();

		add(jPanelRealplayArea, BorderLayout.CENTER);
		revalidate();

		// 获取窗口句柄
		HWND hwnd = new HWND(Native.getComponentPointer(panelRealplay));
		// 获取通道号

		IntByReference ibrBytesReturned = new IntByReference(0);// 获取IP接入配置参数
		boolean bRet = false;

		HCNetSDK.NET_DVR_IPPARACFG m_strIpparaCfg = new HCNetSDK.NET_DVR_IPPARACFG();
		m_strIpparaCfg.write();
		Pointer lpIpParaConfig = m_strIpparaCfg.getPointer();
		bRet = HCNetSDKManger.hCNetSDK.NET_DVR_GetDVRConfig(lUserID, HCNetSDK.NET_DVR_GET_IPPARACFG, new NativeLong(0),
				lpIpParaConfig, m_strIpparaCfg.size(), ibrBytesReturned);
		m_strIpparaCfg.read();

		// 设备支持IP通道
		String sChannelName = "";
		if (!bRet) {
			// 设备不支持,则表示没有IP通道
			for (int iChannum = 0; iChannum < m_strDeviceInfo.byChanNum; iChannum++) {
				sChannelName = "Camera" + (iChannum + m_strDeviceInfo.byStartChan);
			}
		} else {
			// 设备支持IP通道
			for (int iChannum = 0; iChannum < m_strDeviceInfo.byChanNum; iChannum++) {
				if (m_strIpparaCfg.byAnalogChanEnable[iChannum] == 1) {
					sChannelName = "Camera" + (iChannum + m_strDeviceInfo.byStartChan);
				}
			}
			for (int iChannum = 0; iChannum < HCNetSDK.MAX_IP_CHANNEL; iChannum++)
				if (m_strIpparaCfg.struIPChanInfo[iChannum].byEnable == 1) {
					sChannelName = "IPCamera" + (iChannum + m_strDeviceInfo.byStartChan);
				}
		}
		iChannelNum = -1;
		if (sChannelName.charAt(0) == 'C') {// Camara开头表示模拟通道
			// 子字符串中获取通道号
			iChannelNum = Integer.parseInt(sChannelName.substring(6));
		} else {
			if (sChannelName.charAt(0) == 'I') {// IPCamara开头表示IP通道,子字符创中获取通道号,IP通道号要加32
				iChannelNum = Integer.parseInt(sChannelName.substring(8)) + 32;
			} else {
				logger.info("通道号获取失败");
				return;
			}
		}
		if (iChannelNum == -1) {
			logger.info("请选择要预览的通道");
			return;
		}

		m_strClientInfo = new HCNetSDK.NET_DVR_CLIENTINFO();
		m_strClientInfo.lChannel = new NativeLong(iChannelNum);
		m_strClientInfo.hPlayWnd = hwnd;
		lPreviewHandle = HCNetSDKManger.hCNetSDK.NET_DVR_RealPlay_V30(lUserID, m_strClientInfo, null, null, true);
		long previewSucValue = lPreviewHandle.longValue();
		// 预览失败时:
		if (previewSucValue == -1) {
			System.out.println("预览失败:" + HCNetSDKManger.hCNetSDK.NET_DVR_GetLastError());
			return;
		}
		System.out.println("预览成功！");
		validate();
		isplay = true;
	}

	/**
	 * 停止播放
	 */
	public void stop() {
		logger.info("设备" + deviceId + "停止播放===================");
		if (lPreviewHandle != null && lPreviewHandle.longValue() != -1) {
			if (!HCNetSDKManger.hCNetSDK.NET_DVR_StopRealPlay(lPreviewHandle)) {
				logger.info("设备" + deviceId + "停止播放失败");
			}
			if (m_lPort.getValue().intValue() != -1) {
				if (!playControl.PlayM4_Stop(m_lPort.getValue())) {
					logger.info("设备" + deviceId + "停止播放失败");
				}
				m_lPort.setValue(new NativeLong(-1));
			}
		}
		panelRealplay.repaint();
		isplay = false;
	}

	public boolean isIsplay() {
		return isplay;
	}

	/**
	 * 实现截图
	 */
	public void snapshot(String filepath) {
		if (!HCNetSDKManger.hCNetSDK.NET_DVR_CapturePicture(lPreviewHandle, filepath)) {
			JOptionPane.showMessageDialog(this, "设备截屏失败:" + HCNetSDKManger.hCNetSDK.NET_DVR_GetLastError());
			System.out.println("设备截屏失败:" + HCNetSDKManger.hCNetSDK.NET_DVR_GetLastError());
		}else{
			JOptionPane.showMessageDialog(this, "截图成功！");
		}
	}
}

Player.java

package com.kx.hcws.ui;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import java.util.Date;

import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;

public class Player extends JFrame implements WindowListener {
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	private HcPlayerPanel playerPanel;

	private JTextField ipField;
	private JTextField usernameField;
	private JPasswordField pwdField;

	public Player() {
		setSize(1200, 600);
		setResizable(true);
		setTitle("设备预览");
		setLocationRelativeTo(null);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);// 关闭窗口时关闭系统

		getContentPane().setLayout(new BorderLayout());

		playerPanel = new HcPlayerPanel();
		playerPanel.setBackground(Color.BLACK);
		playerPanel.setPreferredSize(new Dimension(1000, 600));

		getContentPane().add(playerPanel, BorderLayout.CENTER);

		initCtrlPanel();

		setVisible(true);
	}

	private void initCtrlPanel() {
		JPanel content = new JPanel();
		content.setLayout(new FlowLayout());

		{// IP
			JLabel jLabel = new JLabel("IP：");
			jLabel.setPreferredSize(new Dimension(60, 30));
			jLabel.setHorizontalTextPosition(JLabel.CENTER);
			jLabel.setVerticalAlignment(JLabel.CENTER);
			content.add(jLabel);

			ipField = new JTextField();
			ipField.setPreferredSize(new Dimension(130, 30));
			content.add(ipField);
		}

		{// 用户名
			JLabel jLabel = new JLabel("用户名：");
			jLabel.setPreferredSize(new Dimension(60, 30));
			jLabel.setHorizontalTextPosition(JLabel.CENTER);
			jLabel.setVerticalAlignment(JLabel.CENTER);
			content.add(jLabel);

			usernameField = new JTextField("admin");
			usernameField.setPreferredSize(new Dimension(130, 30));
			content.add(usernameField);
		}

		{// 密码
			JLabel jLabel = new JLabel("密码：");
			jLabel.setPreferredSize(new Dimension(60, 30));
			jLabel.setHorizontalTextPosition(JLabel.CENTER);
			jLabel.setVerticalAlignment(JLabel.CENTER);
			content.add(jLabel);

			pwdField = new JPasswordField("");
			pwdField.setPreferredSize(new Dimension(130, 30));
			content.add(pwdField);
		}

		{// 按钮
			JButton playBtn = new JButton("播放");
			playBtn.setPreferredSize(new Dimension(150, 30));
			playBtn.addActionListener(new ActionListener() {
				@Override
				public void actionPerformed(ActionEvent e) {
					String m_sDeviceIP = ipField.getText();
					if (m_sDeviceIP == null || "".equals(m_sDeviceIP)) {
						JOptionPane.showMessageDialog(Player.this, "IP不能为空");
						return;
					}

					String username = usernameField.getText();
					if (username == null || "".equals(username)) {
						JOptionPane.showMessageDialog(Player.this, "用户名不能为空");
						return;
					}

					String password = pwdField.getText();
					if (password == null || "".equals(password)) {
						JOptionPane.showMessageDialog(Player.this, "密码不能为空");
						return;
					}

					if (playerPanel.isIsplay()) {// 先停止
						playerPanel.stop();
					}
					playerPanel.start(m_sDeviceIP, username, password, 8000, 1L);

					new Thread(new Runnable() {
						@Override
						public void run() {
							playerPanel.play();
						}
					}).start();
				}
			});
			content.add(playBtn);

			JButton imgBtn = new JButton("截图");
			imgBtn.setPreferredSize(new Dimension(150, 30));
			imgBtn.addActionListener(new ActionListener() {
				@Override
				public void actionPerformed(ActionEvent e) {
					if (!playerPanel.isIsplay()) {// 先停止
						JOptionPane.showMessageDialog(Player.this, "请先预览！");
						return;
					}
					JFileChooser filechooser = new JFileChooser();// 创建文件选择器
					filechooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
					int returnVal = filechooser.showOpenDialog(Player.this);
					if (returnVal == JFileChooser.APPROVE_OPTION) {
						String file = filechooser.getSelectedFile().getAbsolutePath() + "\\" + new Date().getTime()
								+ ".jpg";
						playerPanel.snapshot(file);
					}
				}
			});
			content.add(imgBtn);
		}

		content.setPreferredSize(new Dimension(200, 600));

		getContentPane().add(content, BorderLayout.WEST);
	}

	@Override
	public void windowActivated(WindowEvent e) {

	}

	@Override
	public void windowClosed(WindowEvent e) {
	}

	@Override
	public void windowClosing(WindowEvent e) {
		playerPanel.stop();
	}

	@Override
	public void windowDeactivated(WindowEvent e) {

	}

	@Override
	public void windowDeiconified(WindowEvent e) {

	}

	@Override
	public void windowIconified(WindowEvent e) {

	}

	@Override
	public void windowOpened(WindowEvent e) {

	}
}

预览：

源码：源码下载