接上一篇
使用Onvif協定最重要的應用就是對裝置進行PTZ雲台控制，PTZ控制包含轉動、變焦等，這裡我們主要讨論常用的轉動和變焦(也就是放大縮小)
流程
要進行裝置PTZ控制，我們首先需要擷取到裝置的Device Service Address和此裝置的使用者名密碼
前兩個流程和擷取流位址一樣
擷取裝置能力Capabilities
擷取裝置的能力，并且可以擷取到Media和PTZ的URI，使用這兩個URL可以進行流和PTZ操作，這裡如果PTZ URI擷取不到意味着這個裝置無法支援PTZ控制
_tds__GetCapabilities* capabilities = soap_new__tds__GetCapabilities(proxyDevice, -1);
tt__CapabilityCategory* category = new tt__CapabilityCategory;
capabilities->Category = category;
*(capabilities->Category) = tt__CapabilityCategory__All;
_tds__GetCapabilitiesResponse* response = soap_new__tds__GetCapabilitiesResponse(proxyDevice, -1);
if (SOAP_OK == proxyDevice->GetCapabilities(capabilities, response))
{
if (response->Capabilities)
{
//Media URI: response->Capabilities->Media->XAddr;
//PTZ URI: response->Capabilities->PTZ->XAddr;
}
}
擷取Media Profile
使用上一步擷取到的Media URI擷取裝置的Media Profile
_trt__GetProfiles* getProfiles = soap_new__trt__GetProfiles(proxyMedia, -1);
_trt__GetProfilesResponse* response = soap_new__trt__GetProfilesResponse(proxyMedia, -1);
if (SOAP_OK == proxyMedia->GetProfiles(getProfiles, response))
{
int size = response->__sizeProfiles;
for (int i = 0; i < size; ++i)
{
if (response->Profiles[i])
{
//Media Profile Token: response->Profiles[i]->token;
//一般裝置包含多個Profile Token，包含主碼流、子碼流、第三碼流
}
}
}
PTZ控制
使用擷取的Media URI和Media Profile Token進行PTZ控制
PTZ控制，這裡隻考慮ContinuousMove，需要在停止的時候發送停止指令
_tptz__ContinuousMove* continuousMove = soap_new__tptz__ContinuousMove(ptzProxy, -1);
_tptz__ContinuousMoveResponse* response = soap_new__tptz__ContinuousMoveResponse(ptzProxy, -1);
continuousMove->ProfileToken = const_cast(profile.c_str());
tt__PTZSpeed* velocity = soap_new_tt__PTZSpeed(ptzProxy, -1);
continuousMove->Velocity = velocity;
tt__Vector2D* panTilt = soap_new_tt__Vector2D(ptzProxy, -1);
continuousMove->Velocity->PanTilt = panTilt;
continuousMove->Velocity->PanTilt->space = "http://www.onvif.org/ver10/tptz/PanTiltSpaces/VelocityGenericSpace";
tt__Vector1D* zoom = soap_new_tt__Vector1D(ptzProxy, -1);
continuousMove->Velocity->Zoom = zoom;
switch (command)
{
case LEFT:
continuousMove->Velocity->PanTilt->x = -((float)speed / 10);
continuousMove->Velocity->PanTilt->y = 0;
break;
case RIGHT:
continuousMove->Velocity->PanTilt->x = ((float)speed / 10);
continuousMove->Velocity->PanTilt->y = 0;
break;
case UP:
continuousMove->Velocity->PanTilt->x = 0;
continuousMove->Velocity->PanTilt->y = ((float)speed / 10);
break;
case DOWN:
continuousMove->Velocity->PanTilt->x = 0;
continuousMove->Velocity->PanTilt->y = -((float)speed / 10);
break;
case ZOOMIN:
continuousMove->Velocity->Zoom->x = ((float)speed / 10);
break;
case ZOOMOUT:
continuousMove->Velocity->Zoom->x = -((float)speed / 10);
break;
default:
break;
}
if (ptzProxy->ContinuousMove(continuousMove, response) == SOAP_OK)
//轉動成功
停止PTZ控制
_tptz__Stop* stop = soap_new__tptz__Stop(ptzProxy, -1);
_tptz__StopResponse* response = soap_new__tptz__StopResponse(ptzProxy, -1);
stop->ProfileToken = const_cast(profile.c_str());
bool* pantilt = new bool;
stop->PanTilt = pantilt;
*(stop->PanTilt) = true;
bool* zoom = new bool;
stop->Zoom = zoom;
*(stop->Zoom) = true;
if (SOAP_OK == ptzProxy->Stop(stop, response))
//停止成功
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