初学小结使用Onvif协议进行PTZ控制

近期由于项目原因接触到了Onvif协议，使用Onvif协议进行PTZ控制。

具体的Onvif协议是什么，PTZ是什么我就不介绍了，主要实现功能的步骤简单的介绍下（主要介绍ContinuousMove功能）：

1、通过设备服务地址（形如http://xx/onvif/device_service），调用GetCapabilities函数接口，获取到Media的URL；

2、通过Media的URL，调用GetProfiles函数接口，获取到ProfileToken;

3、对_tptz__ContinuousMove结构体进行填充，具体填充内容在以下代码中可见；

4、调用soap_call___tptz__ContinuousMove函数接口实现摄像头转动功能；

由于涉及到公司的通信协议，我所给的代码是测试版的，数值是定的，不过功能可以实现（有不足之处希望各位可以指出，一起学习一起进步）：

int main(int argc, char** argv)
{
    	struct soap soap;
	soap_init(&soap);
    	char * ip;
	int retval = 0; 
	int result;
	char Mediaddr[256]="";
	char profile[256]="";
	int speed_x=100;
	int speed_y=0;
	int speed_z=0;
	struct _tds__GetCapabilities            	req;
    	struct _tds__GetCapabilitiesResponse    	rep;
	struct _trt__GetProfiles 			getProfiles;
	struct _trt__GetProfilesResponse		response;
	struct _tptz__ContinuousMove 	 		continuousMove;
	struct _tptz__ContinuousMoveResponse 		continuousMoveresponse;
	struct _tptz__Stop 				stop;
	struct _tptz__StopResponse 			stopresponse;
	req.Category = (enum tt__CapabilityCategory *)soap_malloc(&soap, sizeof(int));
	req.__sizeCategory = 1;
	*(req.Category) = (enum tt__CapabilityCategory)0;
    
    	char endpoint[255];
	memset(endpoint, '\0', 255);
   	if (argc > 1)
    	{
        	ip = argv[1];
    	}
    	else
    	{
        	ip = "10.27.13.6:80"; 
    	}
    	sprintf(endpoint, "http://%s/onvif/device_service", ip);
	soap_call___tds__GetCapabilities(&soap, endpoint, NULL, &req, &rep);
	if (soap.error)  
        {  
                printf("[%s][%d]--->>> soap error: %d, %s, %s\n", __func__, __LINE__, soap.error, *soap_faultcode(&soap), *soap_faultstring(&soap));  
                retval = soap.error;  	 
        } 
	else
	{
		printf("XAddr====%s\n",rep.Capabilities->Device->XAddr);
		printf("XAddr====%s\n",rep.Capabilities->Media->XAddr);
		strcpy(Mediaddr,rep.Capabilities->Media->XAddr);
		printf("\n");
	}	
	result = soap_call___trt__GetProfiles(&soap, Mediaddr, NULL, &getProfiles, &response);
	if(result == SOAP_OK)
	{
		strcpy(profile,response.Profiles[0].token);
		printf("profile====%s\n",profile);
	}
		
	continuousMove.ProfileToken =profile;
	struct tt__PTZSpeed* velocity = soap_new_tt__PTZSpeed(&soap, -1);
	continuousMove.Velocity = velocity;
	struct tt__Vector2D* panTilt = soap_new_tt__Vector2D(&soap, -1);
	continuousMove.Velocity->PanTilt = panTilt;
	continuousMove.Velocity->PanTilt->space = "http://www.onvif.org/ver10/tptz/PanTiltSpaces/VelocityGenericSpace";
	struct tt__Vector1D* zoom = soap_new_tt__Vector1D(&soap, -1);
	continuousMove.Velocity->Zoom = zoom;
	continuousMove.Velocity->PanTilt->x = (float)speed_x/ 100;
	continuousMove.Velocity->PanTilt->y = (float) speed_y/ 100;
	continuousMove.Velocity->Zoom->x = (float)speed_z / 100;
	if(soap_call___tptz__ContinuousMove(&soap,endpoint,NULL,&continuousMove,&continuousMoveresponse) == SOAP_OK)
	{
		printf("======SetPTZcontinuous_move is success!!!=======\n");
	}

    soap_destroy(&soap); // clean up class instances
    soap_end(&soap); // clean up everything and close socket, // userid and passwd were deallocated
    soap_done(&soap); // close master socket and detach context

    return 0;
}