海康威视SDK:NET_DVR_GetDVRConfig failed Device does not support this function

1900_ 2022-09-23 10:05:33 阅读数:133

sdk海康康威dvrnet_dvr_getdvrconfig

问题记录:

基于海康的sdk写了一些代码,用于控制摄像头。其中有一段程序主要是用来获取NVR通道配置信息
参考:https://blog.51cto.com/u_15127677/4382288
代码如下,
用到了一个函数NET_DVR_GetDVRConfig

#include <iostream>
#include "HCNetSDK.h"
int main()
{

NET_DVR_Init();
//设置连接时间与重连时间
NET_DVR_SetConnectTime(2000, 1);
NET_DVR_SetReconnect(10000, true);
// 注册设备
LONG lUserID;
//登录参数,包括设备地址、登录用户、密码等
NET_DVR_USER_LOGIN_INFO struLoginInfo = {
 0 };
struLoginInfo.bUseAsynLogin = 0; //同步登录方式
strcpy(struLoginInfo.sDeviceAddress, "192.168.20.106"); //设备IP地址
struLoginInfo.wPort = 8000; //设备服务端口
strcpy(struLoginInfo.sUserName, "admin"); //设备登录用户名
strcpy(struLoginInfo.sPassword, "111111hk"); //设备登录密码
//设备信息, 输出参数
NET_DVR_DEVICEINFO_V40 struDeviceInfoV40 = {
 0 };
lUserID = NET_DVR_Login_V40(&struLoginInfo, &struDeviceInfoV40);
if (lUserID < 0)
{

printf("Login failed, error code: %d\n", NET_DVR_GetLastError());
NET_DVR_Cleanup();
return -1;
}
NET_DVR_IPPARACFG_V40 ipcfg;
DWORD bytesReturned = 0;
ipcfg.dwSize = sizeof(NET_DVR_IPPARACFG_V40);
int iGroupNO = 0;
bool resCode = NET_DVR_GetDVRConfig(lUserID, NET_DVR_GET_IPPARACFG_V40, iGroupNO, &ipcfg, sizeof(NET_DVR_IPPARACFG_V40), &bytesReturned);
if (!resCode)
{

DWORD code = NET_DVR_GetLastError();
std::cout << "NET_DVR_GetDVRConfig failed " << NET_DVR_GetErrorMsg((LONG*)(&code)) << std::endl;
NET_DVR_Logout(lUserID);
NET_DVR_Cleanup();
return -1;
}
std::cout << "设备组 " << ipcfg.dwGroupNum << " 数字通道个数 " << ipcfg.dwDChanNum << " 起始通道 " << ipcfg.dwStartDChan << std::endl << std::endl;
for (int i = 0; i < ipcfg.dwDChanNum; i++)
{

NET_DVR_PICCFG_V30 channelInfo;
bytesReturned = 0;
channelInfo.dwSize = sizeof(NET_DVR_PICCFG_V30);
int channelNum = i + ipcfg.dwStartDChan;
NET_DVR_GetDVRConfig(lUserID, NET_DVR_GET_PICCFG_V30, channelNum, &channelInfo, sizeof(NET_DVR_PICCFG_V30), &bytesReturned);
std::cout <<"通道号 "<< channelNum << "\t通道名称 " << channelInfo.sChanName;
std::cout << "\t用户名 " << ipcfg.struIPDevInfo[i].sUserName << "\t密码 " << ipcfg.struIPDevInfo[i].sPassword;
std::cout << "\t设备ID " << (int)ipcfg.struIPDevInfo[i].szDeviceID;
std::cout << "\tip地址 " << ipcfg.struIPDevInfo[i].struIP.sIpV4 << "\t端口 " << ipcfg.struIPDevInfo[i].wDVRPort << std::endl;
}
//释放SDK资源
NET_DVR_Logout(lUserID);
NET_DVR_Cleanup();
return 0;
}

这段代码本来运行ok,但是迁移到别的机器上时,出问题了。
报错:NET_DVR_GetDVRConfig failed Device does not support this function
提示这个设备不支持这个函数,原因在手册上面有写。
在这里插入图片描述
注意这句话:
如果设备支持IP通道个数大于0,则可以通过远程参数配置接口NET_DVR_GetDVRConfig
也就意味着,你要使用这个函数,需要先检验,设备支持的IP通道个数。
同时,手册上也给了示例程序(先检验,再调用)
示例程序如下:
ps:有一点想吐槽,手册上面关于NET_DVR_GetDVRConfig这个函数的解释,丝毫没有提到这个问题,害的我好找,找了很久才找到这里有写。既然这个函数并不是所有设备都支持的,那么规范的写法就应该先检验,再调用。

#include <stdio.h>
#include <iostream>
#include "Windows.h"
#include "string.h"
#include "HCNetSDK.h"
using namespace std;
void main()
{

int i=0;
BYTE byIPID,byIPIDHigh;
int iDevInfoIndex, iGroupNO, iIPCh;
DWORD dwReturned = 0;
//---------------------------------------
// 初始化
NET_DVR_Init();
//设置连接时间与重连时间
NET_DVR_SetConnectTime(2000, 1);
NET_DVR_SetReconnect(10000, true);
//---------------------------------------
// 注册设备
LONG lUserID;
//登录参数,包括设备地址、登录用户、密码等
NET_DVR_USER_LOGIN_INFO struLoginInfo = {
0};
struLoginInfo.bUseAsynLogin = 0; //同步登录方式
strcpy(struLoginInfo.sDeviceAddress, "192.0.0.64"); //设备IP地址
struLoginInfo.wPort = 8000; //设备服务端口
strcpy(struLoginInfo.sUserName, "admin"); //设备登录用户名
strcpy(struLoginInfo.sPassword, "abcd1234"); //设备登录密码
//设备信息, 输出参数
NET_DVR_DEVICEINFO_V40 struDeviceInfoV40 = {
0};
lUserID = NET_DVR_Login_V40(&struLoginInfo, &struDeviceInfoV40);
if (lUserID < 0)
{

printf("Login failed, error code: %d\n", NET_DVR_GetLastError());
NET_DVR_Cleanup();
return;
}
printf("The max number of analog channels: %d\n",struDeviceInfoV40.struDeviceV30.byChanNum); //模拟通道个数
printf("The max number of IP channels: %d\n", struDeviceInfoV40.struDeviceV30.byIPChanNum + struDeviceInfoV40.struDeviceV30.byHighDChanNum * 256);//IP通道个数
//获取IP通道参数信息
NET_DVR_IPPARACFG_V40 IPAccessCfgV40;
memset(&IPAccessCfgV40, 0, sizeof(NET_DVR_IPPARACFG));
iGroupNO=0;
if (!NET_DVR_GetDVRConfig(lUserID, NET_DVR_GET_IPPARACFG_V40, iGroupNO, &IPAccessCfgV40, sizeof(NET_DVR_IPPARACFG_V40), &dwReturned))
{

printf("NET_DVR_GET_IPPARACFG_V40 error, %d\n", NET_DVR_GetLastError());
NET_DVR_Logout(lUserID);
NET_DVR_Cleanup();
return;
}
else
{

for (i=0;i<IPAccessCfgV40.dwDChanNum;i++)
{

switch(IPAccessCfgV40.struStreamMode[i].byGetStreamType)
{

case 0: //直接从设备取流
if (IPAccessCfgV40.struStreamMode[i].uGetStream.struChanInfo.byEnable)
{

byIPID=IPAccessCfgV40.struStreamMode[i].uGetStream.struChanInfo.byIPID;
byIPIDHigh=IPAccessCfgV40.struStreamMode[i].uGetStream.struChanInfo.byIPIDHigh;
iDevInfoIndex=byIPIDHigh*256 + byIPID-1-iGroupNO*64;
printf("IP channel no.%d is online, IP: %s\n", i+1, IPAccessCfgV40.struIPDevInfo[iDevInfoIndex].struIP.sIpV4);
}
break;
case 1: //从流媒体取流
if (IPAccessCfgV40.struStreamMode[i].uGetStream.struPUStream.struStreamMediaSvrCfg.byValid)
{

printf("IP channel %d connected with the IP device by stream server.\n", i+1);
printf("IP of stream server: %s, IP of IP device: %s\n",IPAccessCfgV40.struStreamMode[i].uGetStream.\
struPUStream.struStreamMediaSvrCfg.struDevIP.sIpV4, IPAccessCfgV40.struStreamMode[i].uGetStream.\
struPUStream.struDevChanInfo.struIP.sIpV4);
}
break;
default:
break;
}
}
}
//配置IP通道5;
iIPCh=4;
//支持自定义协议
NET_DVR_CUSTOM_PROTOCAL struCustomPro;
if (!NET_DVR_GetDVRConfig(lUserID, NET_DVR_GET_CUSTOM_PRO_CFG, 1, &struCustomPro, sizeof(NET_DVR_CUSTOM_PROTOCAL), &dwReturned))
//获取自定义协议1
{

printf("NET_DVR_GET_CUSTOM_PRO_CFG error, %d\n", NET_DVR_GetLastError());
NET_DVR_Logout(lUserID);
NET_DVR_Cleanup();
return;
}
struCustomPro.dwEnabled=1; //启用主码流
struCustomPro.dwEnableSubStream=1; //启用子码流
strcpy((char *)struCustomPro.sProtocalName,"Protocal_RTSP"); //自定义协议名称:Protocal_RTSP,最大16字节
struCustomPro.byMainProType=1; //主码流协议类型: 1- RTSP
struCustomPro.byMainTransType=2; //主码流传输协议: 0-Auto, 1-udp, 2-rtp over rtsp
struCustomPro.wMainPort=554; //主码流取流端口
strcpy((char *)struCustomPro.sMainPath,"rtsp://192.168.1.65/h264/ch1/main/av_stream");//主码流取流URL
struCustomPro.bySubProType=1; //子码流协议类型: 1-RTSP
struCustomPro.bySubTransType=2; //子码流传输协议: 0-Auto, 1-udp, 2-rtp over rtsp
struCustomPro.wSubPort=554; //子码流取流端口
strcpy((char *)struCustomPro.sSubPath,"rtsp://192.168.1.65/h264/ch1/sub/av_stream");//子码流取流URL
if (!NET_DVR_SetDVRConfig(lUserID, NET_DVR_SET_CUSTOM_PRO_CFG, 1, &struCustomPro, sizeof(NET_DVR_CUSTOM_PROTOCAL)))
//设置自定义协议1
{

printf("NET_DVR_SET_CUSTOM_PRO_CFG error, %d\n", NET_DVR_GetLastError());
NET_DVR_Logout(lUserID);
NET_DVR_Cleanup();
return;
}
printf("Set the custom protocol: %s\n", "Protocal_RTSP");
NET_DVR_IPC_PROTO_LIST m_struProtoList;
if (!NET_DVR_GetIPCProtoList(lUserID, &m_struProtoList)) //获取设备支持的前端协议
{

printf("NET_DVR_GetIPCProtoList error, %d\n", NET_DVR_GetLastError());
NET_DVR_Logout(lUserID);
NET_DVR_Cleanup();
return;
}
IPAccessCfgV40.struIPDevInfo[iIPCh].byEnable=1; //启用
for (i = 0; i<m_struProtoList.dwProtoNum; i++)
{

if(strcmp((char *)struCustomPro.sProtocalName,(char *)m_struProtoList.struProto[i].byDescribe)==0)
{

IPAccessCfgV40.struIPDevInfo[iIPCh].byProType=m_struProtoList.struProto[i].dwType; //选择自定义协议
break;
}
}
//IPAccessCfgV40.struIPDevInfo[iIPCh].byProType=0; //厂家私有协议
strcpy((char *)IPAccessCfgV40.struIPDevInfo[iIPCh].struIP.sIpV4,"192.168.1.65"); //前端IP设备的IP地址
IPAccessCfgV40.struIPDevInfo[iIPCh].wDVRPort=8000; //前端IP设备服务端口
strcpy((char *)IPAccessCfgV40.struIPDevInfo[iIPCh].sUserName,"admin"); //前端IP设备登录用户名
strcpy((char *)IPAccessCfgV40.struIPDevInfo[iIPCh].sPassword,"12345"); //前端IP设备登录密码
IPAccessCfgV40.struStreamMode[iIPCh].byGetStreamType=0;
IPAccessCfgV40.struStreamMode[iIPCh].uGetStream.struChanInfo.byChannel=1;
IPAccessCfgV40.struStreamMode[iIPCh].uGetStream.struChanInfo.byIPID=(iIPCh+1)%256;
IPAccessCfgV40.struStreamMode[iIPCh].uGetStream.struChanInfo.byIPIDHigh=(iIPCh+1)/256;
//IP通道配置,包括添加、删除、修改IP通道等
if (!NET_DVR_SetDVRConfig(lUserID, NET_DVR_SET_IPPARACFG_V40, iGroupNO, &IPAccessCfgV40, sizeof(NET_DVR_IPPARACFG_V40)))
{

printf("NET_DVR_SET_IPPARACFG_V40 error, %d\n", NET_DVR_GetLastError());
NET_DVR_Logout(lUserID);
NET_DVR_Cleanup();
return;
}
else
{

printf("Set IP channel no.%d, IP: %s\n", iIPCh+1, IPAccessCfgV40.struIPDevInfo[iIPCh].struIP.sIpV4);
}
//注销用户
NET_DVR_Logout(lUserID);
//释放SDK资源
NET_DVR_Cleanup();
return;
}
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