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DeviceOrientationSensorFactory.cpp
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DeviceOrientationSensorFactory.cpp
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#include "DeviceOrientationSensorFactory.h"
#include "DeviceOrientationSensor.h"
#include <sensorsapi.h>
template <class T> void SafeRelease(T** ppT) {
if (*ppT) {
(*ppT)->Release();
*ppT = nullptr;
}
}
IDeviceOrientationSensor* DeviceOrientationSensorFactory::FindAndCreatDeviceOrientationSensorInstance() {
IDeviceOrientationSensor* pIDeviceOrientationSensor = nullptr;
CoInitialize(nullptr);
ISensorCollection* pSensorColl = nullptr;
ISensorManager* pSensorManager = nullptr;
ISensor* pSensor = nullptr;
HRESULT hr = ::CoCreateInstance(CLSID_SensorManager, nullptr, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&pSensorManager));
do {
if (FAILED(hr)) {
OutputDebugString(L"CoCreateInstance error");
break;
}
hr = pSensorManager->GetSensorsByType(SENSOR_TYPE_AGGREGATED_DEVICE_ORIENTATION, &pSensorColl);
if (SUCCEEDED(hr)) {
hr = pSensorColl->GetAt(0, &pSensor);
pIDeviceOrientationSensor = new DeviceOrientationSensor(pSensor, SENSOR_DATA_TYPE_QUATERNION);
break;
}
if (FAILED(hr)) {
OutputDebugString(L"No Sensor");
}
} while (false);
if (pSensor != nullptr && pIDeviceOrientationSensor != nullptr) {
ISensorCollection* pSensorCollection = NULL;
HRESULT hr = ::CoCreateInstance(CLSID_SensorCollection, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&pSensorCollection));
do {
if (FAILED(hr)) {
OutputDebugString(L"Unable to CoCreateInstance() a SensorCollection.");
break;
}
pSensorCollection->Clear();
pSensorCollection->Add(pSensor);
// Have the SensorManager prompt the end-user for permission.
hr = pSensorManager->RequestPermissions(NULL, pSensorCollection, TRUE);
SafeRelease(&pSensorCollection);
if (FAILED(hr)) {
OutputDebugString(L"No permission to access Requested Sensor.");
if (pIDeviceOrientationSensor != nullptr) {
delete pIDeviceOrientationSensor;
pIDeviceOrientationSensor = nullptr;
}
break;
}
} while (false);
}
SafeRelease(&pSensorColl);
SafeRelease(&pSensorManager);
return pIDeviceOrientationSensor;
}
void DeviceOrientationSensorFactory::Release(IDeviceOrientationSensor* instance) {
if (instance != nullptr) {
delete instance;
instance = nullptr;
}
CoUninitialize();
}