海康OSD添加获取及清除

比眉伴天荒 2022-11-28 13:52 572阅读 0赞

## 函数 ##

NET_DVR_SHOWSTRING_V30 // OSD信息集
    NET_DVR_GetDVRConfig// 获取
    NET_DVR_SetDVRConfig// 设置

## 添加 ##

/**
         * 设置 OSD 字符叠加参数
         *
         * @param iUserID  loginId
         * @param iChan    通道号
         * @param contents 内容
         */
        public static void SetOSDString(int iUserID, int iChan, String[] contents) throws UnsupportedEncodingException {
        
            if (iUserID < 0) return;
            if (null == contents || contents.length <= 0) return;
    
            NET_DVR_SHOWSTRING_V30 cfg = new NET_DVR_SHOWSTRING_V30();
            if (!HCNetSDK.getInstance().NET_DVR_GetDVRConfig(iUserID, HCNetSDK.NET_DVR_GET_SHOWSTRING_V30, iChan, cfg)) {
        
                System.out.println("NET_DVR_GET_SHOWSTRING_V30 faild!" + " err: " + HCNetSDK.getInstance().NET_DVR_GetLastError());
                return;
            } else {
        
                System.out.println("NET_DVR_GET_SHOWSTRING_V30 succ!");
            }
    
    
            int iIndex = 0;
            for (int i = 0; i < contents.length; i++) {
        
                if ("".equals(contents[i]))
                    continue;
                if (iIndex >= cfg.struStringInfo.length)//防止超限
                    break;
    
                byte[] tempBytes = new byte[128];
                byte[] osd = contents[i].getBytes("GBK");
                System.arraycopy(osd, 0, tempBytes, 0, osd.length);
                cfg.struStringInfo[iIndex].wShowString = 1;//1为显示，0为不显示
                cfg.struStringInfo[iIndex].sString = tempBytes;//叠加的字符串
                cfg.struStringInfo[iIndex].wStringSize = osd.length;//字符串大小
                // 显示范围704*576
                cfg.struStringInfo[iIndex].wShowStringTopLeftX = 550;//坐标x
                cfg.struStringInfo[iIndex].wShowStringTopLeftY = 50 + (iIndex * 38);//坐标y
                iIndex++;
            }
            HCNetSDK.getInstance().NET_DVR_SetDVRConfig(iUserID, HCNetSDK.NET_DVR_SET_SHOWSTRING_V30, iChan, cfg);
        }

## 获取 ##

/**
         * 获取 OSD 字符叠加参数
         *
         * @param iUserID loginId
         * @param iChan   通道号
         */
        public static String[] GetOSDString(int iUserID, int iChan) throws UnsupportedEncodingException {
        
    
            if (iUserID < 0) return null;
            NET_DVR_SHOWSTRING_V30 cfg = new NET_DVR_SHOWSTRING_V30();
            if (!HCNetSDK.getInstance().NET_DVR_GetDVRConfig(iUserID, HCNetSDK.NET_DVR_GET_SHOWSTRING_V30, iChan, cfg)) {
        
                System.out.println("NET_DVR_GET_SHOWSTRING_V30 faild!" + " err: " + HCNetSDK.getInstance().NET_DVR_GetLastError());
                return null;
            }
            System.out.println("NET_DVR_GET_SHOWSTRING_V30 succ!");
    
            String[] OSDStrings = new String[cfg.struStringInfo.length];
            for (int i = 0; i < cfg.struStringInfo.length; i++) {
        
                if (cfg.struStringInfo[i].wShowString == 1) {
        
                    OSDStrings[i] = new String(cfg.struStringInfo[i].sString, "GBK");
                }
            }
            return OSDStrings;
        }

## 清除 ##

/**
         * 清除OSD
         *
         * @param iUserID loginId
         * @param iChan   通道号
         */
        public static void ClearOSD(int iUserID, int iChan) {
        
            if (iUserID < 0) return;
            NET_DVR_SHOWSTRING_V30 cfg = new NET_DVR_SHOWSTRING_V30();
            if (!HCNetSDK.getInstance().NET_DVR_GetDVRConfig(iUserID, HCNetSDK.NET_DVR_GET_SHOWSTRING_V30, iChan, cfg)) {
        
                System.out.println("NET_DVR_GET_SHOWSTRING_V30 faild!" + " err: " + HCNetSDK.getInstance().NET_DVR_GetLastError());
                return;
            } else {
        
                System.out.println("NET_DVR_GET_SHOWSTRING_V30 succ!");
            }
    
            for (int i = 0; i < cfg.struStringInfo.length; i++) {
        
                cfg.struStringInfo[i].wShowString = 0;//1为显示，0为不显示
            }
            HCNetSDK.getInstance().NET_DVR_SetDVRConfig(iUserID, HCNetSDK.NET_DVR_SET_SHOWSTRING_V30, iChan, cfg);
        }

## 使用及注意 ##

*  单行字符的长度，不能大于44 个字符
 *  获取字符时，注意空字符及编解码问题，获取到的字符集是填满的
 *  注意判断边界，防止越界异常

### 添加OSD ###

String[] content = new String[3];
    content[0] = "test1: 123";
    content[1] = "测试2: 我真帅";
    content[2] = "it's three";
    try {
        
        DevOSDConfig.SetOSDString(VideoFragment.m_iUserID, 1, content);
    } catch (UnsupportedEncodingException e) {
        
        e.printStackTrace();
    }

### 获取OSD ###

try {
        
        String[] strings = DevOSDConfig.GetOSDString(VideoFragment.m_iUserID, 1);
        if (strings != null && strings.length > 0)
            for (String string : strings) {
        
                if (string != null && !string.isEmpty()) {
        
                    L.e(string.trim());
                }
            }
    
    } catch (UnsupportedEncodingException e) {
        
        e.printStackTrace();
    }

### 清除OSD ###

DevOSDConfig.ClearOSD(VideoFragment.m_iUserID, 1);