海康Linux上实时获取裸码流失败

Question

在 Ubuntu 24.04.2 LTS 上通过 Java SDK 获取裸码流失败，登陆、获取通道等均成功，但是没有视频数据，回调显示：异常事件类型:32771
运行的是 SDK 中的 Demo，SDK 版本：CH-HCNetSDKV6.1.9.48_build20230410_linux64_20240829112751
以下是完整日志：

```bash
OpenJDK 64-Bit Server VM warning: You have loaded library /tmp/jna4278948216934714095.tmp which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
loop[2] find 2 mac and 2 ip
设置异常消息回调成功
[2025-06-27 16:52:43.477][DBG] CCoreGlobalCtrlBase::LoadDSo, HPR_LoadDSo Succ, Path[/usr/local/FWebSCADA/libs/hikvision/libz.so], hHandleRet[1077279216]
[2025-06-27 16:52:43.477][INF] The COM:HCCoreBase ver is 6.1.4.15, 2020_03_05. Async:1.
[2025-06-27 16:52:43.477][INF] The COM:Core ver is 6.1.9.48, 2023_04_10. Async:1.
[2025-06-27 16:52:43.477][INF] This HCNetSDK ver is 6.1.9.48 Ver 2023_04_10.
[2025-06-27 16:52:43.570][INF] Login dev 196.168.89.189:8000.
[2025-06-27 16:52:43.570][INF] dwTotalNum[2048]
[2025-06-27 16:52:43.573][INF] Private connect 196.168.89.189:8000 sock=154 this=0x40525dc4 cmd=0x10000 port=50028
[2025-06-27 16:52:43.573][INF] LogonDev1 in[196.168.89.189:8000]
[2025-06-27 16:52:43.576][DBG] CCoreGlobalCtrlBase::LoadDSo, HPR_LoadDSo Succ, Path[/home/guans/code/ClientDemo/lib/libcrypto.so.1.1], hHandleRet[1079180368]
[2025-06-27 16:52:43.577][DBG] CCoreGlobalCtrlBase::LoadDSo, HPR_LoadDSo Succ, Path[/home/guans/code/ClientDemo/lib/libssl.so.1.1], hHandleRet[1079182240]
[2025-06-27 16:52:43.577][INF] SSLTRANSAPI::LoadAPI, libeay, Load Real Path[/home/guans/code/ClientDemo/lib/libcrypto.so.1.1]
[2025-06-27 16:52:43.577][INF] SSLTRANSAPI::IsAllAPILoaded, SSL_library_init Unload
[2025-06-27 16:52:43.577][INF] OpenSSL, Not All Function Loaded!
[2025-06-27 16:52:43.577][INF] SSLTRANSAPI::PrintVersion, OpenSSL version info [OpenSSL 1.1.1l  24 Aug 2021]
[2025-06-27 16:52:43.577][INF] CSSLTrans::SSLCtxInit, dwSSLVersion[6], m_fnTLSServerMethod
[2025-06-27 16:52:43.580][ERR] CSSLTrans::SSLTrans_CTX_Load_CA, invalid path[/home/guans/code/ClientDemo/lib/cert/\]
196.168.89.189 设备登录成功！
预览起始通道号: 33
请输入您想要执行的demo实例! （退出请输入yes）
1

[Module]实时取流示例代码
取流成功
请输入您想要执行的demo实例! （退出请输入yes）
异常事件类型:32771
[2025-06-27 16:53:00.455][DBG] CComBase::Load, Load szDllPath[/home/guans/code/ClientDemo/lib/HCNetSDKCom/libHCPreview.so] SUCC
[2025-06-27 16:53:00.456][INF] AbilityAnalyze---Init-- start
[2025-06-27 16:53:00.456][DBG] AbilityAnalyze---Init-- over, DeviceList path [/usr/local/FWebSCADA/libs/hikvision/HCNetSDKCom/LocalXml/DeviceList.xml], load result[0]
[2025-06-27 16:53:00.456][INF] The COM:Preview ver is 6.1.9.48, 2023_04_10.
[2025-06-27 16:53:00.459][INF] Private connect 196.168.89.189:8000 sock=156 this=0x40525dc4 cmd=0x30000 port=53004
[2025-06-27 16:53:00.461][ERR] ID-IP-CHAN[0-196.168.89.189-1] [CGetTCPStream::LinkToDvr] struOut.dwDevState[13] dwErrCode[0xffffffff] dwMErrDevSelfEx[0xffffffff] CommandThread callback exception
[2025-06-27 16:53:00.461][ERR] ID-IP-CHAN[0-196.168.89.189-1] [CPreviewSession::AllResourceStarWork] StreamGetterStartWork Failed, UserID[0]
[2025-06-27 16:53:00.461][DBG] ID-IP-CHAN[0-196.168.89.189-1] [CPreviewSession::AllResourceStarWorkThread] EXCEPTION_PREVIEW trigger, AllResourceStarWork Failed, UserID[0] dwError[23]
2

[Module]停止实时取流示例代码
停止取流成功
请输入您想要执行的demo实例! （退出请输入yes）
3

[Module]实时获取裸码流示例代码
取流成功
异常事件类型:32771
请输入您想要执行的demo实例! （退出请输入yes）
[2025-06-27 16:54:27.143][INF] Private connect 196.168.89.189:8000 sock=157 this=0x40525dc4 cmd=0x30000 port=52752
[2025-06-27 16:54:27.144][INF] CCoreGlobalCtrl::LoadDSo, enumDllType[7], cTempPath[/home/guans/code/ClientDemo/lib/HCNetSDKCom/]
[2025-06-27 16:54:27.145][ERR] ID-IP-CHAN[1-196.168.89.189-1] [CGetTCPStream::LinkToDvr] struOut.dwDevState[13] dwErrCode[0xffffffff] dwMErrDevSelfEx[0xffffffff] CommandThread callback exception
[2025-06-27 16:54:27.145][ERR] ID-IP-CHAN[1-196.168.89.189-1] [CPreviewSession::AllResourceStarWork] StreamGetterStartWork Failed, UserID[0]
[2025-06-27 16:54:27.145][DBG] ID-IP-CHAN[1-196.168.89.189-1] [CPreviewSession::AllResourceStarWorkThread] EXCEPTION_PREVIEW trigger, AllResourceStarWork Failed, UserID[0] dwError[23]
[2025-06-27 16:54:27.146][DBG] CCoreGlobalCtrl::LoadDSo, HPR_LoadDSo, hHandleRet[1078009888], enumDllType[7], Path[libanalyzedata.so], syserror[2]
[2025-06-27 16:54:27.146][INF] [CAnalyzeDataLib::LoadLib] Load Succ

```

Answer 1

阿里嘎多学长整理AIGC生成，因移动端显示问题导致当前答案未能完全显示，请使用PC端查看更加详细的解答过程

海康Linux上实时获取裸码流失败

你在 Ubuntu 24.04.2 LTS 上使用 Java SDK 获取裸码流失败，登陆、获取通道等均成功，但是没有视频数据。回调显示异常事件类型为 32771。

可能的解决方案：

1. 检查 SDK 配置是否正确，特别是视频流的配置是否正确。
2. 检查网络连接是否稳定，确保可以正常获取视频流。
3. 检查 Java SDK 的版本是否正确，是否需要升级。
4. 检查海康摄像头的设置是否正确，是否需要调整。
5. 检查回调函数是否正确，是否需要修改。

核心代码：

// 创建视频流对象
HikvisionVideoStream videoStream = new HikvisionVideoStream();

// 设置视频流参数
videoStream.setStreamType(HikvisionVideoStream.StreamType.RAW);
videoStream.setResolution(HikvisionVideoStream.Resolution.HD720);
videoStream.setFrameRate(HikvisionVideoStream.FrameRate.FPS30);

// 获取视频流
videoStream.start();

// 监听视频流事件
videoStream.addVideoStreamListener(new VideoStreamListener() {
    @Override
    public void onVideoStreamEvent(int eventType, byte[] data) {
        // 处理视频流事件
        if (eventType == HikvisionVideoStream.EventTypes.EXCEPTION) {
            // 处理异常事件
            System.out.println("异常事件类型：" + eventType);
        }
    }
});

注意：上述代码仅供参考，需要根据实际情况进行修改。