linux系统下,qtcreator实现onvif协议设备发现
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一、开发环境
Fedora23
qtcreator4.0.3 based on Qt5.6.2
海康威视DS-2CD2512F-IS摄像机
二、创建工程
很喜欢用qtcreator,其强大的补全和检错功能,用起来十分舒服。因此使用qtcreator来创建这个工程。创建步骤如下
1. 打开qtcreator,选择New Project,由于作者要创建一个非qt工程,所以选择Non-Qt Project下的Plain C++ Application工程,这样就可以创建一个纯C++的工程了。
2. 创建完成后,将上一篇文章中得到的onvif框架代码文件全部拷贝到工程目录下,右键单击工程名,选择Add Existing Files…将拷贝过来的文件添加进工程中。
三、编写发现设备函数
static struct soap* ONVIF_Initsoap(struct SOAP_ENV__Header *header, const char *was_To, const char *was_Action, int timeout){ struct soap *soap = NULL; unsigned char macaddr[6]; char _HwId[1024]; unsigned int Flagrand; soap = soap_new(); if(soap == NULL) { printf("[%d]soap = NULL\n", __LINE__); return NULL; } soap_set_namespaces(soap, namespaces); if(timeout > 0) { soap->recv_timeout = timeout; soap->send_timeout = timeout; soap->connect_timeout = timeout; } else { //Maximum waittime : 20s soap->recv_timeout = 20; soap->send_timeout = 20; soap->connect_timeout = 20; } soap_default_SOAP_ENV__Header(soap, header); //Create SessionID randomly srand((int)time(0)); Flagrand = rand()%9000 + 8888; macaddr[0] = 0x1; macaddr[1] = 0x2; macaddr[2] = 0x3; macaddr[3] = 0x4; macaddr[4] = 0x5; macaddr[5] = 0x6; sprintf(_HwId, "urn:uuid:%ud68a-1dd2-11b2-a105-%02X%02X%02X%02X%02X%02X", Flagrand, macaddr[0], macaddr[1], macaddr[2],macaddr[3],macaddr[4],macaddr[5]); header->wsa__MessageID = (char *)malloc(100); memset(header->wsa__MessageID, 0, 100); strncpy(header->wsa__MessageID, _HwId, strlen(_HwId)); if(was_Action != NULL) { header->wsa__Action = (char*)malloc(1024); memset(header->wsa__Action, '\0', 1024); strncpy(header->wsa__Action, was_Action, 1024);// } if(was_To != NULL) { header->wsa__To = (char *)malloc(1024); memset(header->wsa__To, '\0', 1024); strncpy(header->wsa__To, was_To, 1024);//"urn:schemas-xmlsoap-org:ws:2005:04:discovery"; } soap->header = header; return soap;}int ONVIF_ClientDiscovery(){ int FoundDevNo = 0; int retval = SOAP_OK; wsdd__ProbeType req; struct __wsdd__ProbeMatches resp; wsdd__ScopesType sScope; struct SOAP_ENV__Header header; struct soap* soap; const char *was_To = "urn:schemas-xmlsoap-org:ws:2005:04:discovery"; const char *was_Action = "http://schemas.xmlsoap.org/ws/2005/04/discovery/Probe"; //IP Adress and PortNo, broadCast const char *soap_endpoint = "soap.udp://239.255.255.250:3702/"; //Create new soap object with info soap = ONVIF_Initsoap(&header, was_To, was_Action, 10); soap_default_SOAP_ENV__Header(soap, &header); soap->header = &header; soap_default_wsdd__ScopesType(soap, &sScope); sScope.__item = NULL; soap_default_wsdd__ProbeType(soap, &req); req.Scopes = &sScope; req.Types = NULL; //"dn:NetworkVideoTransmitter"; //sent the message broadcast and wait retval = soap_send___wsdd__Probe(soap, soap_endpoint, NULL, &req); //printf("[%d]:probe resault is %d\n", __LINE__, retval); //printf("[%d]:recv soap error :%d, %s, %s\n", __LINE__, soap->error, *soap_faultcode(soap), *soap_faultstring(soap)); while(retval == SOAP_OK) { printf("**************1**************\n"); retval = soap_recv___wsdd__ProbeMatches(soap, &resp); if(retval == SOAP_OK) { if(soap->error) { printf("[%d]:recv soap error :%d, %s, %s\n", __LINE__, soap->error, *soap_faultcode(soap), *soap_faultstring(soap)); retval = soap->error; } else //we find a device { FoundDevNo++; if(resp.wsdd__ProbeMatches->ProbeMatch != NULL && resp.wsdd__ProbeMatches->ProbeMatch->XAddrs != NULL) { printf("***** No %d Devices Information *****\n", FoundDevNo); printf("Device Service Address : %s\r\n", resp.wsdd__ProbeMatches->ProbeMatch->XAddrs); printf("Device EP Address : %s\r\n", resp.wsdd__ProbeMatches->ProbeMatch->wsa__EndpointReference.Address); printf("Device Type : %s\r\n", resp.wsdd__ProbeMatches->ProbeMatch->Types); printf("Device Metadata Version: %d\r\n", resp.wsdd__ProbeMatches->ProbeMatch->MetadataVersion); printf("[%d]*********************************\n", __LINE__); } } } else if(soap->error) { if(FoundDevNo == 0) { printf("No Device found!\n"); retval = soap->error; } else { printf("Search end! Find %d Device! \n", FoundDevNo); retval = 0; } break; } } soap_destroy(soap); soap_end(soap); soap_free(soap); return retval;}
这段代码来自http://blog.csdn.net/saloon_yuan/article/details/27524875
接下来在main函数中调用设备发现函数即可
int main(int argc, char *argv[]){ if(ONVIF_ClientDiscovery() != 0) { printf("discover failed! \n"); return -1; } return 0;}
记得包含wsdd.h,在文件开始添加#include "wsdd.h"
接下来编译、运行、即可正常发现设备了。
注意
发现设备功能不需要客户端和服务端在同一网段,发现设备的数据包是通过广播发出的。但是如果客户端和服务端处于不同网段,可能需要路由支持,要确保广播的数据包能够被服务端正常接收到。而且后续的获取设备能力、获取rtsp地址等功能需要客户端和服务端在同一网段,因此最好一开始就使客户端和服务端在同一网段。
刚刚接触onvif协议开发, 如有疏漏、偏差,欢迎各位指正,不胜感激。
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