// Called by Sensor CLX to begin continously sampling the sensor.
NTSTATUS
CustomSensorDevice::OnStart(
_In_ SENSOROBJECT SensorInstance // sensor device object
)
{
PHardwareSimulator pSimulator = nullptr;
PCustomSensorDevice pDevice = GetCustomSensorContextFromSensorInstance(SensorInstance);
NTSTATUS Status = STATUS_SUCCESS;
SENSOR_FunctionEnter();
if (nullptr == pDevice)
{
Status = STATUS_INVALID_PARAMETER;
TraceError("PED %!FUNC! Sensor(%08X) parameter is invalid. Failed %!STATUS!", (INT)SensorInstance, Status);
}
if (NT_SUCCESS(Status))
{
// Get the simulator context
pSimulator = GetHardwareSimulatorContextFromInstance(pDevice->m_SimulatorInstance);
if (nullptr == pSimulator)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
TraceError("PED %!FUNC! GetHardwareSimulatorContextFromInstance failed %!STATUS!", Status);
}
}
if (NT_SUCCESS(Status))
{
// Start the simulator
pSimulator->Start();
pDevice->m_FirstSample = TRUE;
// Start polling
pDevice->m_Started = TRUE;
InitPropVariantFromUInt32(SensorState_Active,
&(pDevice->m_pProperties->List[SENSOR_PROPERTY_STATE].Value));
// Start the sample polling timer.
// Note1: the WDF timer is only as precise as the system resolution allows it to be.
// In the case of the CO2 sensor, the reporting interval is 200 milliseconds. The default
// system resolution (15.6 milliseconds) is therefore fine enough to guarantee an accurate sample
// reporting interval. Some sensors using a lower reporting interval may want to reduce the system
// time resolution by calling into timeBeginPeriod() before starting the polling timer.
//
// Important consideration: calling into timeBeginPeriod() should be used with care as it has
// an adverse on the system performance and power consumption.
//
// Note2: The polling timer is configured to allow for the first sample to be reported immediately.
// Some hardware may want to delay the first sample report a little to account for hardware start time.
WdfTimerStart(pDevice->m_Timer, 0);
}
SENSOR_FunctionExit(Status);
return Status;
}
// Called by Sensor CLX to stop continously sampling the sensor.
NTSTATUS ActivityDevice::OnStop(_In_ SENSOROBJECT sensorInstance)
{
NTSTATUS status = STATUS_SUCCESS;
SENSOR_FunctionEnter();
PActivityDevice pDevice = GetActivityContextFromSensorInstance(sensorInstance);
if (nullptr == pDevice)
{
status = STATUS_INVALID_PARAMETER;
TraceError("ACT %!FUNC! Sensor parameter is invalid. Failed %!STATUS!", status);
}
else
{
// Stop sensing
pDevice->m_Started = FALSE;
WdfTimerStop(pDevice->m_Timer, TRUE);
InitPropVariantFromUInt32(SensorState_Idle, &(pDevice->m_pProperties->List[SENSOR_PROPERTY_STATE].Value));
// Stop simulation
if (NULL != pDevice->m_SimulatorInstance)
{
PHardwareSimulator pSimulator = GetHardwareSimulatorContextFromInstance(pDevice->m_SimulatorInstance);
if (nullptr != pSimulator)
{
pSimulator->Stop();
}
}
}
SENSOR_FunctionExit(status);
return status;
}
// Called by Sensor CLX to begin keeping history
NTSTATUS
PedometerDevice::OnStartHistory(
_In_ SENSOROBJECT SensorInstance // Sensor device object
)
{
PPedometerDevice pDevice = GetPedometerContextFromSensorInstance(SensorInstance);
NTSTATUS Status = STATUS_SUCCESS;
PHardwareSimulator pSimulator = nullptr;
SENSOR_FunctionEnter();
if (nullptr == pDevice)
{
Status = STATUS_INVALID_PARAMETER;
TraceError("PED %!FUNC! Sensor(0x%p) parameter is invalid. Failed %!STATUS!", SensorInstance, Status);
goto Exit;
}
if (FALSE == pDevice->m_HistorySupported)
{
Status = STATUS_NOT_SUPPORTED;
TraceError("PED %!FUNC! History is not supported by the HW");
goto Exit;
}
if (FALSE == pDevice->m_PoweredOn)
{
Status = STATUS_DEVICE_NOT_READY;
TraceError("PED %!FUNC! Sensor is not powered on! %!STATUS!", Status);
goto Exit;
}
pSimulator = GetHardwareSimulatorContextFromInstance(pDevice->m_SimulatorInstance);
if (nullptr == pSimulator)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
TraceError("PED %!FUNC! GetHardwareSimulatorContextFromInstance failed %!STATUS!", Status);
goto Exit;
}
// Start the pedometer history
Status = pSimulator->StartHistory();
if (!NT_SUCCESS(Status))
{
TraceError("PED %!FUNC! Start History failed %!STATUS!", Status);
}
Exit:
SENSOR_FunctionExit(Status);
return Status;
}
// This callback is called when interval wait time has expired and driver is ready
// to collect new sample. The callback stores activity data in history buffer,
// and schedules next wake up time.
VOID ActivityDevice::OnHistoryTimerExpire(_In_ WDFTIMER historyTimer)
{
NTSTATUS status = STATUS_SUCCESS;
SENSOR_FunctionEnter();
PActivityDevice pDevice = GetActivityContextFromSensorInstance(WdfTimerGetParentObject(historyTimer));
if (nullptr == pDevice)
{
status = STATUS_INSUFFICIENT_RESOURCES;
TraceError("ACT %!FUNC! GetActivityContextFromSensorInstance failed %!STATUS!", status);
}
else
{
ActivitySample data = {};
if (NULL != pDevice->m_SimulatorInstance)
{
PHardwareSimulator pSimulator = GetHardwareSimulatorContextFromInstance(pDevice->m_SimulatorInstance);
if (nullptr != pSimulator)
{
status = pSimulator->GetSample(&data);
}
else
{
status = STATUS_INVALID_PARAMETER;
}
}
GetSystemTimePreciseAsFileTime(&(data.Timestamp));
if (NT_SUCCESS(status))
{
// Add data to the buffer
WdfWaitLockAcquire(pDevice->m_HistoryLock, NULL);
status = pDevice->AddDataElementToHistoryBuffer(&data);
if (!NT_SUCCESS(status))
{
TraceError("ACT %!FUNC! AddDataElementToHistoryBuffer Failed %!STATUS!", status);
}
WdfWaitLockRelease(pDevice->m_HistoryLock);
}
// Schedule next wake up time
if (FALSE != pDevice->m_HistoryStarted)
{
WdfTimerStart(pDevice->m_HistoryTimer, WDF_REL_TIMEOUT_IN_MS(pDevice->m_HistoryIntervalInMs));
}
}
SENSOR_FunctionExit(status);
}
// Called by Sensor CLX to begin continuously sampling the sensor.
NTSTATUS
PedometerDevice::OnStart(
_In_ SENSOROBJECT SensorInstance // Sensor device object
)
{
PHardwareSimulator pSimulator = nullptr;
PPedometerDevice pDevice = GetPedometerContextFromSensorInstance(SensorInstance);
NTSTATUS Status = STATUS_SUCCESS;
SENSOR_FunctionEnter();
if (nullptr == pDevice)
{
Status = STATUS_INVALID_PARAMETER;
TraceError("PED %!FUNC! Sensor(0x%p) parameter is invalid. Failed %!STATUS!", SensorInstance, Status);
goto Exit;
}
// Get the simulator context
pSimulator = GetHardwareSimulatorContextFromInstance(pDevice->m_SimulatorInstance);
if (nullptr == pSimulator)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
TraceError("PED %!FUNC! GetHardwareSimulatorContextFromInstance failed %!STATUS!", Status);
}
if (NT_SUCCESS(Status))
{
// Start the simulator
pSimulator->Start();
pDevice->m_FirstSample = TRUE;
// Start polling
pDevice->m_Started = TRUE;
InitPropVariantFromUInt32(SensorState_Active,
&(pDevice->m_pProperties->List[SENSOR_PROPERTY_STATE].Value));
// Start the sample polling timer.
//
// Note: The polling timer is configured to allow for the first sample to be reported immediately.
// Some hardware may want to delay the first sample report a little to account for hardware start time.
WdfTimerStart(pDevice->m_Timer, WDF_REL_TIMEOUT_IN_MS(Pedometer_Default_MinDataInterval_Ms));
}
Exit:
SENSOR_FunctionExit(Status);
return Status;
}
// Called by Sensor CLX to stop continously sampling the sensor.
NTSTATUS
CustomSensorDevice::OnStop(
_In_ SENSOROBJECT SensorInstance // sensor device object
)
{
PHardwareSimulator pSimulator = nullptr;
PCustomSensorDevice pDevice = GetCustomSensorContextFromSensorInstance(SensorInstance);
NTSTATUS Status = STATUS_SUCCESS;
SENSOR_FunctionEnter();
if (nullptr == pDevice)
{
Status = STATUS_INVALID_PARAMETER;
TraceError("CSTM %!FUNC! Sensor(%08X) parameter is invalid. Failed %!STATUS!", (INT) SensorInstance, Status);
}
if (NT_SUCCESS(Status))
{
// Stop polling
pDevice->m_Started = FALSE;
// Waiting for the callback to complete, then stopping the timer
WdfTimerStop(pDevice->m_Timer, TRUE);
InitPropVariantFromUInt32(SensorState_Idle,
&(pDevice->m_pProperties->List[SENSOR_PROPERTY_STATE].Value));
// Stop the simulator
pSimulator = GetHardwareSimulatorContextFromInstance(pDevice->m_SimulatorInstance);
if (nullptr == pSimulator)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
TraceError("CSTM %!FUNC! GetHardwareSimulatorContextFromInstance failed %!STATUS!", Status);
goto Exit;
}
pSimulator->Stop();
}
Exit:
SENSOR_FunctionExit(Status);
return Status;
}
// Called by Sensor CLX to begin continously sampling the sensor.
NTSTATUS ActivityDevice::OnStart(_In_ SENSOROBJECT sensorInstance)
{
NTSTATUS status = STATUS_SUCCESS;
SENSOR_FunctionEnter();
PActivityDevice pDevice = GetActivityContextFromSensorInstance(sensorInstance);
if (nullptr == pDevice)
{
status = STATUS_INVALID_PARAMETER;
TraceError("ACT %!FUNC! Sensor parameter is invalid. Failed %!STATUS!", status);
}
else
{
if (FALSE == pDevice->m_PoweredOn)
{
status = STATUS_DEVICE_NOT_READY;
TraceError("ACT %!FUNC! Sensor is not powered on! %!STATUS!", status);
}
else
{
// Start simulation
if (NULL != pDevice->m_SimulatorInstance)
{
PHardwareSimulator pSimulator = GetHardwareSimulatorContextFromInstance(pDevice->m_SimulatorInstance);
if (nullptr != pSimulator)
{
pSimulator->Start();
}
}
// Start sensing
pDevice->m_FirstSample = TRUE;
pDevice->m_Started = TRUE;
InitPropVariantFromUInt32(SensorState_Active, &(pDevice->m_pProperties->List[SENSOR_PROPERTY_STATE].Value));
WdfTimerStart(pDevice->m_Timer, WDF_REL_TIMEOUT_IN_MS(Act_Default_MinDataInterval_Ms));
}
}
SENSOR_FunctionExit(status);
return status;
}
// Resets the pedometer to its initial values.
VOID
PedometerDevice::ResetPedometer()
{
NTSTATUS Status = STATUS_SUCCESS;
PHardwareSimulator pSimulator = GetHardwareSimulatorContextFromInstance(m_SimulatorInstance);
SENSOR_FunctionEnter();
if (nullptr == pSimulator)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
TraceError("PED %!FUNC! GetHardwareSimulatorContextFromInstance failed %!STATUS!", Status);
}
else
{
// Reset the pedometer
pSimulator->Reset();
}
SENSOR_FunctionExit(Status);
}
// This routine is called by worker thread to read a single sample and push it back
// to CLX.
NTSTATUS CustomSensorDevice::GetData()
{
PHardwareSimulator pSimulator = nullptr;
FILETIME TimeStamp = {};
NTSTATUS Status = STATUS_SUCCESS;
SENSOR_FunctionEnter();
if (FALSE != m_FirstSample)
{
Status = GetPerformanceTime(&m_StartTime);
if (!NT_SUCCESS(Status))
{
m_StartTime = 0;
TraceError("CSTM %!FUNC! GetPerformanceTime %!STATUS!", Status);
}
}
pSimulator = GetHardwareSimulatorContextFromInstance(m_SimulatorInstance);
if (nullptr == pSimulator)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
TraceError("CSTM %!FUNC! GetHardwareSimulatorContextFromInstance failed %!STATUS!", Status);
goto Exit;
}
// push to clx
InitPropVariantFromFloat(pSimulator->GetSample(), &(m_pData->List[CSTM_DATA_CO2_LEVEL_PERCENT].Value));
GetSystemTimePreciseAsFileTime(&TimeStamp);
InitPropVariantFromFileTime(&TimeStamp, &(m_pData->List[CSTM_DATA_TIMESTAMP].Value));
SensorsCxSensorDataReady(m_SensorInstance, m_pData);
m_FirstSample = FALSE;
Exit:
SENSOR_FunctionExit(Status);
return Status;
}
// This static routine performs simulator initialization. The routine creates a
// timer object that periodically updates the m_Index location
NTSTATUS
HardwareSimulator::Initialize(
_In_ WDFDEVICE Device, // WDF device representing the sensor
_Out_ WDFOBJECT *SimulatorInstance) // Instance of the WDF object for the simulator
{
PHardwareSimulator pSimulator = nullptr;
NTSTATUS Status = STATUS_SUCCESS;
WDF_OBJECT_ATTRIBUTES HardwareSimulatorAttributes = {};
SENSOR_FunctionEnter();
// Create WDFOBJECT for the hardware simulator
WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&HardwareSimulatorAttributes, HardwareSimulator);
HardwareSimulatorAttributes.ParentObject = Device;
Status = WdfObjectCreate(&HardwareSimulatorAttributes, SimulatorInstance);
if (!NT_SUCCESS(Status))
{
TraceError("CSTM %!FUNC! WdfObjectCreate failed %!STATUS!", Status);
goto Exit;
}
pSimulator = GetHardwareSimulatorContextFromInstance(*SimulatorInstance);
if (nullptr == pSimulator)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
TraceError("CSTM %!FUNC! GetHardwareSimulatorContextFromInstance failed %!STATUS!", Status);
goto Exit;
}
pSimulator->InitializeInternal(*SimulatorInstance);
Exit:
SENSOR_FunctionExit(Status);
return Status;
}
// This routine is called by the framework when the PnP manager is revoking
// ownership of our resources. This may be in response to either
// IRP_MN_STOP_DEVICE or IRP_MN_REMOVE_DEVICE. This routine is responsible for
// performing cleanup of resources allocated in PrepareHardware callback.
// This callback is invoked before passing the request down to the lower driver.
// This routine will also be invoked by the framework if the prepare hardware
// callback returns a failure.
NTSTATUS
CustomSensorDevice::OnReleaseHardware(
_In_ WDFDEVICE Device, // Supplies a handle to the framework device object
_In_ WDFCMRESLIST /*ResourcesTranslated*/) // Supplies a handle to a collection of framework
// resource objects. This collection identifies the translated
// (system-physical) hardware resources that have been assigned to the
// device. The resources appear from the CPU's point of view.
{
PHardwareSimulator pSimulator = nullptr;
PCustomSensorDevice pDevice = nullptr;
SENSOROBJECT SensorInstance = nullptr;
ULONG SensorInstanceCount = 1; // only expect 1 sensor instance
NTSTATUS Status = STATUS_SUCCESS;
SENSOR_FunctionEnter();
// Get sensor instance
Status = SensorsCxDeviceGetSensorList(Device, &SensorInstance, &SensorInstanceCount);
if (!NT_SUCCESS(Status) ||
0 == SensorInstanceCount ||
NULL == SensorInstance)
{
Status = STATUS_INVALID_PARAMETER;
TraceError("CSTM %!FUNC! SensorsCxDeviceGetSensorList failed %!STATUS!", Status);
goto Exit;
}
pDevice = GetCustomSensorContextFromSensorInstance(SensorInstance);
if (nullptr == pDevice)
{
Status = STATUS_INVALID_PARAMETER;
TraceError("CSTM %!FUNC! GetCustomSensorContextFromSensorInstance failed %!STATUS!", Status);
goto Exit;
}
// Delete lock
if (pDevice->m_Lock)
{
WdfObjectDelete(pDevice->m_Lock);
pDevice->m_Lock = NULL;
}
// Cleanup the CO2 simulator
pSimulator = GetHardwareSimulatorContextFromInstance(pDevice->m_SimulatorInstance);
if (nullptr == pSimulator)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
TraceError("CSTM %!FUNC! GetHardwareSimulatorContextFromInstance failed %!STATUS!", Status);
goto Exit;
}
pSimulator->Cleanup();
// Delete hardware simulator instance
if (NULL != pDevice->m_SimulatorInstance)
{
WdfObjectDelete(pDevice->m_SimulatorInstance);
pDevice->m_SimulatorInstance = NULL;
}
// Delete sensor instance
if (NULL != pDevice->m_SensorInstance)
{
WdfObjectDelete(pDevice->m_SensorInstance);
}
Exit:
SENSOR_FunctionExit(Status);
return Status;
}
// This routine is called by the framework when the PnP manager is revoking
// ownership of our resources. This may be in response to either
// IRP_MN_STOP_DEVICE or IRP_MN_REMOVE_DEVICE. This routine is responsible for
// performing cleanup of resources allocated in PrepareHardware callback.
// This callback is invoked before passing the request down to the lower driver.
// This routine will also be invoked by the framework if the prepare hardware
// callback returns a failure.
NTSTATUS ActivityDevice::OnReleaseHardware(
_In_ WDFDEVICE device, // Supplies a handle to the framework device object
_In_ WDFCMRESLIST /*ResourcesTranslated*/) // Supplies a handle to a collection of framework
// resource objects. This collection identifies the translated
// (system-physical) hardware resources that have been assigned to the
// device. The resources appear from the CPU's point of view.
{
NTSTATUS status = STATUS_SUCCESS;
SENSOR_FunctionEnter();
// Get sensor instance
SENSOROBJECT sensorInstance = NULL;
ULONG sensorInstanceCount = 1; // only expect 1 sensor instance
status = SensorsCxDeviceGetSensorList(device, &sensorInstance, &sensorInstanceCount);
if (!NT_SUCCESS(status) || sensorInstanceCount == 0 || sensorInstance == NULL)
{
status = STATUS_INVALID_PARAMETER;
TraceError("ACT %!FUNC! SensorsCxDeviceGetSensorList failed %!STATUS!", status);
}
else
{
PActivityDevice pDevice = GetActivityContextFromSensorInstance(sensorInstance);
if (nullptr == pDevice)
{
status = STATUS_INVALID_PARAMETER;
TraceError("ACT %!FUNC! GetActivityContextFromSensorInstance failed %!STATUS!", status);
}
else
{
// Cleanup activity simulator
if (NULL != pDevice->m_SimulatorInstance)
{
PHardwareSimulator pSimulator = GetHardwareSimulatorContextFromInstance(pDevice->m_SimulatorInstance);
if (nullptr != pSimulator)
{
pSimulator->Deinitialize();
}
// Continue tearing down
WdfObjectDelete(pDevice->m_SimulatorInstance);
pDevice->m_SimulatorInstance = NULL;
}
// Close handle to history retrieval thread
if (NULL != pDevice->m_hThread)
{
SetEvent(pDevice->m_ExitEvent);
DWORD result = WaitForSingleObjectEx(pDevice->m_hThread, Act_TimeoutForHistoryThread_Ms, FALSE);
if (WAIT_OBJECT_0 != result)
{
// continue tearing down
status = NTSTATUS_FROM_WIN32(result);
TraceError("ACT %!FUNC! WaitForSingleObjectEx failed %!STATUS!", status);
}
CloseHandle(pDevice->m_hThread);
pDevice->m_hThread = NULL;
}
// Close handle to exit event
if (NULL != pDevice->m_ExitEvent)
{
CloseHandle(pDevice->m_ExitEvent);
pDevice->m_ExitEvent = NULL;
}
// Delete history lock
if (NULL != pDevice->m_HistoryLock)
{
WdfObjectDelete(pDevice->m_HistoryLock);
pDevice->m_HistoryLock = NULL;
}
// Delete lock
if (NULL != pDevice->m_Lock)
{
WdfObjectDelete(pDevice->m_Lock);
pDevice->m_Lock = NULL;
}
// Delete sensor instance.
if (NULL != pDevice->m_SensorInstance)
{
// Memory created by WdfMemoryCreate with m_SensorInstance as parent object will be
// destroyed automatically when m_SensorInstance is deleted. pDevice will be no longer
// accessible at beyond this point.
WdfObjectDelete(pDevice->m_SensorInstance);
pDevice = nullptr;
}
}
}
SENSOR_FunctionExit(status);
return status;
}
// This routine is called by worker thread to read a single sample, compare threshold
// and push it back to CLX. It simulates hardware thresholding by only generating data
// when the change of data is greater than threshold.
NTSTATUS ActivityDevice::GetData()
{
BOOLEAN dataReady = FALSE;
NTSTATUS status = STATUS_SUCCESS;
SENSOR_FunctionEnter();
if (NULL != m_SimulatorInstance)
{
// Use simulator to get m_pFiltered Sample
PHardwareSimulator pSimulator = GetHardwareSimulatorContextFromInstance(m_SimulatorInstance);
if (nullptr != pSimulator)
{
status = pSimulator->GetSample(m_pFilteredSample);
}
else
{
status = STATUS_INVALID_PARAMETER;
}
}
if (NT_SUCCESS(status))
{
status = CollectionsListSortSubscribedActivitiesByConfidence(m_pThresholds, m_pFilteredSample);
if (!NT_SUCCESS(status))
{
TraceError("ACT %!FUNC! CollectionsListSortSubscribedActivitiesByConfidence failed! %!STATUS!", status);
}
else
{
// new sample?
if (FALSE != m_FirstSample)
{
dataReady = TRUE;
}
else
{
dataReady = EvaluateActivityThresholds(m_pFilteredSample, m_pLastSample, m_pThresholds);
}
}
}
if (FALSE != dataReady)
{
// update last sample
FILETIME TimeStamp = {};
memcpy_s(m_pLastSample, m_pFilteredSample->AllocatedSizeInBytes, m_pFilteredSample, m_pFilteredSample->AllocatedSizeInBytes);
GetSystemTimePreciseAsFileTime(&TimeStamp);
InitPropVariantFromFileTime(&TimeStamp, &(m_pLastSample->List[ACTIVITY_DATA_TIMESTAMP].Value));
// push to clx
SensorsCxSensorDataReady(m_SensorInstance, m_pLastSample);
m_FirstSample = FALSE;
}
else
{
status = STATUS_DATA_NOT_ACCEPTED;
TraceInformation("ACT %!FUNC! Data did NOT meet the threshold");
}
SENSOR_FunctionExit(status);
return status;
}
// This routine is called by the framework when the PnP manager is revoking
// ownership of our resources. This may be in response to either
// IRP_MN_STOP_DEVICE or IRP_MN_REMOVE_DEVICE. This routine is responsible for
// performing cleanup of resources allocated in PrepareHardware callback.
// This callback is invoked before passing the request down to the lower driver.
// This routine will also be invoked by the framework if the prepare hardware
// callback returns a failure.
//
// Argument:
// Device: IN: Supplies a handle to the framework device object
// ResourcesTranslated: IN: Supplies a handle to a collection of framework
// resource objects. This collection identifies the translated
// (system-physical) hardware resources that have been assigned to the
// device. The resources appear from the CPU's point of view.
//
// Return Value:
// NTSTATUS code
//------------------------------------------------------------------------------
NTSTATUS
PedometerDevice::OnReleaseHardware(
_In_ WDFDEVICE Device, // Supplies a handle to the framework device object
_In_ WDFCMRESLIST /*ResourcesTranslated*/) // Supplies a handle to a collection of framework
// resource objects. This collection identifies the translated
// (system-physical) hardware resources that have been assigned to the
// device. The resources appear from the CPU's point of view.
{
PHardwareSimulator pSimulator = nullptr;
PPedometerDevice pDevice = nullptr;
SENSOROBJECT SensorInstance = nullptr;
ULONG SensorInstanceCount = 1; // only expect 1 sensor instance
NTSTATUS Status = STATUS_SUCCESS;
SENSOR_FunctionEnter();
// Get sensor instance
Status = SensorsCxDeviceGetSensorList(Device, &SensorInstance, &SensorInstanceCount);
if (!NT_SUCCESS(Status) ||
0 == SensorInstanceCount ||
NULL == SensorInstance)
{
Status = STATUS_INVALID_PARAMETER;
TraceError("PED %!FUNC! SensorsCxDeviceGetSensorList failed %!STATUS!", Status);
goto Exit;
}
pDevice = GetPedometerContextFromSensorInstance(SensorInstance);
if (nullptr == pDevice)
{
Status = STATUS_INVALID_PARAMETER;
TraceError("PED %!FUNC! GetPedometerContextFromSensorInstance failed %!STATUS!", Status);
goto Exit;
}
pSimulator = GetHardwareSimulatorContextFromInstance(pDevice->m_SimulatorInstance);
if (nullptr == pSimulator)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
TraceError("PED %!FUNC! GetHardwareSimulatorContextFromInstance failed %!STATUS!", Status);
goto Exit;
}
// Close handle to history retrieval thread
if (NULL != pDevice->m_hThread)
{
pSimulator->SignalReadCancellation();
DWORD result = WaitForSingleObjectEx(pDevice->m_hThread, Pedometer_TimeoutForHistoryThread_Ms, FALSE);
if (WAIT_OBJECT_0 != result)
{
TraceError("PED %!FUNC! WaitForSingleObjectEx failed with error %d", result);
goto Exit;
}
CloseHandle(pDevice->m_hThread);
pDevice->m_hThread = NULL;
}
// Delete lock
if (NULL != pDevice->m_Lock)
{
WdfObjectDelete(pDevice->m_Lock);
pDevice->m_Lock = NULL;
}
// Cleanup the pedometer simulator
pSimulator->Cleanup();
// Delete hardware simulator instance
if (NULL != pDevice->m_SimulatorInstance)
{
WdfObjectDelete(pDevice->m_SimulatorInstance);
pDevice->m_SimulatorInstance = NULL;
}
// Delete sensor instance
if (NULL != pDevice->m_SensorInstance)
{
WdfObjectDelete(pDevice->m_SensorInstance);
}
Exit:
SENSOR_FunctionExit(Status);
return Status;
}
// This routine initializes the sensor to its default properties
NTSTATUS
PedometerDevice::Initialize(
_In_ WDFDEVICE Device, // WDFDEVICE object
_In_ SENSOROBJECT SensorInstance // SENSOROBJECT for each sensor instance
)
{
ULONG Size = 0;
WDF_OBJECT_ATTRIBUTES MemoryAttributes;
WDFMEMORY MemoryHandle = NULL;
FILETIME Time = {};
WDF_OBJECT_ATTRIBUTES TimerAttributes;
WDF_TIMER_CONFIG TimerConfig;
NTSTATUS Status = STATUS_SUCCESS;
PHardwareSimulator pSimulator = nullptr;
ULONG HistorySizeInRecords = 0;
SENSOR_FunctionEnter();
// Store device and instance
m_FxDevice = Device;
m_SensorInstance = SensorInstance;
m_Started = FALSE;
m_HistoryRetrievalStarted = FALSE;
// Initialize the pedometer simulator
Status = HardwareSimulator::Initialize(Device, &m_SimulatorInstance);
if (!NT_SUCCESS(Status))
{
TraceError("PED %!FUNC! HardwareSimulator::Initialize failed %!STATUS!", Status);
goto Exit;
}
pSimulator = GetHardwareSimulatorContextFromInstance(m_SimulatorInstance);
if (nullptr == pSimulator)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
TraceError("PED %!FUNC! GetHardwareSimulatorContextFromInstance failed %!STATUS!", Status);
goto Exit;
}
// Create Lock
Status = WdfWaitLockCreate(WDF_NO_OBJECT_ATTRIBUTES, &m_Lock);
if (!NT_SUCCESS(Status))
{
TraceError("PED %!FUNC! WdfWaitLockCreate failed %!STATUS!", Status);
goto Exit;
}
// Create timer object for polling sensor samples
WDF_TIMER_CONFIG_INIT(&TimerConfig, PedometerDevice::OnTimerExpire);
WDF_OBJECT_ATTRIBUTES_INIT(&TimerAttributes);
TimerAttributes.ParentObject = SensorInstance;
TimerAttributes.ExecutionLevel = WdfExecutionLevelPassive;
Status = WdfTimerCreate(&TimerConfig, &TimerAttributes, &m_Timer);
if (!NT_SUCCESS(Status))
{
TraceError("PED %!FUNC! WdfTimerCreate failed %!STATUS!", Status);
goto Exit;
}
// Supported Data-Fields
Size = SENSOR_PROPERTY_LIST_SIZE(PEDOMETER_DATAFIELD_COUNT);
MemoryHandle = NULL;
WDF_OBJECT_ATTRIBUTES_INIT(&MemoryAttributes);
MemoryAttributes.ParentObject = SensorInstance;
Status = WdfMemoryCreate(&MemoryAttributes,
PagedPool,
SENSOR_POOL_TAG_PEDOMETER,
Size,
&MemoryHandle,
reinterpret_cast<PVOID*>(&m_pSupportedDataFields));
if (!NT_SUCCESS(Status) || nullptr == m_pSupportedDataFields)
{
TraceError("PED %!FUNC! WdfMemoryCreate failed %!STATUS!", Status);
goto Exit;
}
SENSOR_PROPERTY_LIST_INIT(m_pSupportedDataFields, Size);
m_pSupportedDataFields->Count = PEDOMETER_DATAFIELD_COUNT;
m_pSupportedDataFields->List[PEDOMETER_DATAFIELD_TIMESTAMP] = PKEY_SensorData_Timestamp;
m_pSupportedDataFields->List[PEDOMETER_DATAFIELD_FIRST_AFTER_RESET] = PKEY_SensorData_PedometerReset;
m_pSupportedDataFields->List[PEDOMETER_DATAFIELD_STEP_TYPE] = PKEY_SensorData_PedometerStepType;
m_pSupportedDataFields->List[PEDOMETER_DATAFIELD_STEP_COUNT] = PKEY_SensorData_PedometerStepCount;
m_pSupportedDataFields->List[PEDOMETER_DATAFIELD_STEP_DURATION] = PKEY_SensorData_PedometerStepDuration_Ms;
// Data
Size = SENSOR_COLLECTION_LIST_SIZE(PEDOMETER_DATA_COUNT);
MemoryHandle = NULL;
WDF_OBJECT_ATTRIBUTES_INIT(&MemoryAttributes);
MemoryAttributes.ParentObject = SensorInstance;
Status = WdfMemoryCreate(&MemoryAttributes,
PagedPool,
SENSOR_POOL_TAG_PEDOMETER,
Size,
&MemoryHandle,
reinterpret_cast<PVOID*>(&m_pData));
if (!NT_SUCCESS(Status) || nullptr == m_pData)
{
TraceError("PED %!FUNC! WdfMemoryCreate failed %!STATUS!", Status);
goto Exit;
}
SENSOR_COLLECTION_LIST_INIT(m_pData, Size);
m_pData->Count = PEDOMETER_DATA_COUNT;
m_pData->List[PEDOMETER_DATA_TIMESTAMP].Key = PKEY_SensorData_Timestamp;
GetSystemTimePreciseAsFileTime(&Time);
InitPropVariantFromFileTime(&Time, &(m_pData->List[PEDOMETER_DATA_TIMESTAMP].Value));
m_pData->List[PEDOMETER_DATA_FIRST_AFTER_RESET].Key = PKEY_SensorData_PedometerReset;
InitPropVariantFromBoolean(FALSE, &(m_pData->List[PEDOMETER_DATA_FIRST_AFTER_RESET].Value));
m_pData->List[PEDOMETER_DATA_UNKNOWN_STEP_TYPE].Key = PKEY_SensorData_PedometerStepType;
InitPropVariantFromUInt32(static_cast<ULONG>(PedometerStepType_Unknown), &(m_pData->List[PEDOMETER_DATA_UNKNOWN_STEP_TYPE].Value));
m_pData->List[PEDOMETER_DATA_UNKNOWN_STEP_COUNT].Key = PKEY_SensorData_PedometerStepCount;
InitPropVariantFromUInt32(600, &(m_pData->List[PEDOMETER_DATA_UNKNOWN_STEP_COUNT].Value));
m_pData->List[PEDOMETER_DATA_UNKNOWN_STEP_DURATION].Key = PKEY_SensorData_PedometerStepDuration_Ms;
InitPropVariantFromInt64(123, &(m_pData->List[PEDOMETER_DATA_UNKNOWN_STEP_DURATION].Value));
m_pData->List[PEDOMETER_DATA_WALKING_STEP_TYPE].Key = PKEY_SensorData_PedometerStepType;
InitPropVariantFromUInt32(static_cast<ULONG>(PedometerStepType_Walking), &(m_pData->List[PEDOMETER_DATA_WALKING_STEP_TYPE].Value));
m_pData->List[PEDOMETER_DATA_WALKING_STEP_COUNT].Key = PKEY_SensorData_PedometerStepCount;
InitPropVariantFromUInt32(700, &(m_pData->List[PEDOMETER_DATA_WALKING_STEP_COUNT].Value));
m_pData->List[PEDOMETER_DATA_WALKING_STEP_DURATION].Key = PKEY_SensorData_PedometerStepDuration_Ms;
InitPropVariantFromInt64(456, &(m_pData->List[PEDOMETER_DATA_WALKING_STEP_DURATION].Value));
m_pData->List[PEDOMETER_DATA_RUNNING_STEP_TYPE].Key = PKEY_SensorData_PedometerStepType;
InitPropVariantFromUInt32(static_cast<ULONG>(PedometerStepType_Running), &(m_pData->List[PEDOMETER_DATA_RUNNING_STEP_TYPE].Value));
m_pData->List[PEDOMETER_DATA_RUNNING_STEP_COUNT].Key = PKEY_SensorData_PedometerStepCount;
InitPropVariantFromUInt32(800, &(m_pData->List[PEDOMETER_DATA_RUNNING_STEP_COUNT].Value));
m_pData->List[PEDOMETER_DATA_RUNNING_STEP_DURATION].Key = PKEY_SensorData_PedometerStepDuration_Ms;
InitPropVariantFromInt64(789, &(m_pData->List[PEDOMETER_DATA_RUNNING_STEP_DURATION].Value));
m_LastSample.Timestamp = Time;
m_LastSample.UnknownStepCount = 0;
m_LastSample.UnknownStepDurationMs = 0;
m_LastSample.WalkingStepCount = 0;
m_LastSample.WalkingStepDurationMs = 0;
m_LastSample.RunningStepCount = 0;
m_LastSample.RunningStepDurationMs = 0;
m_LastSample.IsFirstAfterReset = FALSE;
// Get the History Size to populate 'PKEY_SensorHistory_MaxSize_Bytes'
// Typically the size needed to store a history record on the hardware is
// smaller than the size needed to represent a history record as a
// SENSOR_COLLECTION_LIST (collection of SENSOR_VALUE_PAIRs)
// To be able to accurately represent the size of the history on the
// hardware (simulator in this case), get the number of records that the HW
// can store and multiply it with the marshalled size of
// SENSOR_COLLECTION_LIST needed to represent a single record.
HistorySizeInRecords = pSimulator->GetHistorySizeInRecords();
m_HistorySupported = (HistorySizeInRecords > 0) ? TRUE : FALSE;
// Pedometer History format is exactly same as it's data sample.
// so, we can simply reuse the 'm_pData' to compute the marshalled size
// History Retrieval is not WOW64 compatible and hence will not involve
// serializing the collections list. Should Use
// CollectionsListGetMarshalledSizeWithoutSerialization instead of
// CollectionsListGetMarshalledSize when dealing with History Collection list.
m_HistoryMarshalledRecordSize = CollectionsListGetMarshalledSizeWithoutSerialization(m_pData);
// Sensor Enumeration Properties
Size = SENSOR_COLLECTION_LIST_SIZE(SENSOR_ENUMERATION_PROPERTIES_COUNT);
MemoryHandle = NULL;
WDF_OBJECT_ATTRIBUTES_INIT(&MemoryAttributes);
MemoryAttributes.ParentObject = SensorInstance;
Status = WdfMemoryCreate(&MemoryAttributes,
PagedPool,
SENSOR_POOL_TAG_PEDOMETER,
Size,
&MemoryHandle,
reinterpret_cast<PVOID*>(&m_pEnumerationProperties));
if (!NT_SUCCESS(Status) || nullptr == m_pEnumerationProperties)
{
TraceError("PED %!FUNC! WdfMemoryCreate failed %!STATUS!", Status);
goto Exit;
}
SENSOR_COLLECTION_LIST_INIT(m_pEnumerationProperties, Size);
m_pEnumerationProperties->Count = SENSOR_ENUMERATION_PROPERTIES_COUNT;
m_pEnumerationProperties->List[SENSOR_TYPE_GUID].Key = DEVPKEY_Sensor_Type;
InitPropVariantFromCLSID(GUID_SensorType_Pedometer,
&(m_pEnumerationProperties->List[SENSOR_TYPE_GUID].Value));
m_pEnumerationProperties->List[SENSOR_MANUFACTURER].Key = DEVPKEY_Sensor_Manufacturer;
InitPropVariantFromString(L"Microsoft",
&(m_pEnumerationProperties->List[SENSOR_MANUFACTURER].Value));
m_pEnumerationProperties->List[SENSOR_MODEL].Key = DEVPKEY_Sensor_Model;
InitPropVariantFromString(L"PEDOMETER",
&(m_pEnumerationProperties->List[SENSOR_MODEL].Value));
m_pEnumerationProperties->List[SENSOR_PERSISTENT_UNIQUEID].Key = DEVPKEY_Sensor_PersistentUniqueId;
InitPropVariantFromCLSID(GUID_PedometerDevice_UniqueID,
&(m_pEnumerationProperties->List[SENSOR_PERSISTENT_UNIQUEID].Value));
m_pEnumerationProperties->List[SENSOR_CATEGORY].Key = DEVPKEY_Sensor_Category;
InitPropVariantFromCLSID(GUID_SensorCategory_Motion,
&(m_pEnumerationProperties->List[SENSOR_CATEGORY].Value));
m_pEnumerationProperties->List[SENSOR_ISPRIMARY].Key = DEVPKEY_Sensor_IsPrimary;
InitPropVariantFromBoolean(FALSE,
&(m_pEnumerationProperties->List[SENSOR_ISPRIMARY].Value)); // This value should be set to TRUE if multiple pedometers
// exist on the system and this sensor is the primary sensor
m_pEnumerationProperties->List[SENSOR_POWER].Key = PKEY_Sensor_Power_Milliwatts;
InitPropVariantFromFloat(Pedometer_Default_Power_Milliwatts,
&(m_pEnumerationProperties->List[SENSOR_POWER].Value));
m_pEnumerationProperties->List[SENSOR_MAX_HISTORYSIZE].Key = PKEY_SensorHistory_MaxSize_Bytes;
InitPropVariantFromUInt32(((FALSE != m_HistorySupported) ?
(SENSOR_COLLECTION_LIST_HEADER_SIZE + ((m_HistoryMarshalledRecordSize - SENSOR_COLLECTION_LIST_HEADER_SIZE) * HistorySizeInRecords)) :
0),
&(m_pEnumerationProperties->List[SENSOR_MAX_HISTORYSIZE].Value));
m_pEnumerationProperties->List[SENSOR_SUPPORTED_STEPTYPES].Key = PKEY_SensorData_SupportedStepTypes;
InitPropVariantFromUInt32(PedometerStepType_Unknown | PedometerStepType_Walking | PedometerStepType_Running,
&(m_pEnumerationProperties->List[SENSOR_SUPPORTED_STEPTYPES].Value));
// Sensor Properties
m_Interval = Pedometer_Default_MinDataInterval_Ms;
Size = SENSOR_COLLECTION_LIST_SIZE(SENSOR_COMMON_PROPERTIES_COUNT);
MemoryHandle = NULL;
WDF_OBJECT_ATTRIBUTES_INIT(&MemoryAttributes);
MemoryAttributes.ParentObject = SensorInstance;
Status = WdfMemoryCreate(&MemoryAttributes,
PagedPool,
SENSOR_POOL_TAG_PEDOMETER,
Size,
&MemoryHandle,
reinterpret_cast<PVOID*>(&m_pProperties));
if (!NT_SUCCESS(Status) || nullptr == m_pProperties)
{
TraceError("PED %!FUNC! WdfMemoryCreate failed %!STATUS!", Status);
goto Exit;
}
SENSOR_COLLECTION_LIST_INIT(m_pProperties, Size);
m_pProperties->Count = SENSOR_COMMON_PROPERTIES_COUNT;
m_pProperties->List[SENSOR_PROPERTY_STATE].Key = PKEY_Sensor_State;
InitPropVariantFromUInt32(SensorState_Initializing,
&(m_pProperties->List[SENSOR_PROPERTY_STATE].Value));
m_pProperties->List[SENSOR_PROPERTY_MIN_INTERVAL].Key = PKEY_Sensor_MinimumDataInterval_Ms;
InitPropVariantFromUInt32(Pedometer_Default_MinDataInterval_Ms,
&(m_pProperties->List[SENSOR_PROPERTY_MIN_INTERVAL].Value));
m_pProperties->List[SENSOR_PROPERTY_MAX_DATAFIELDSIZE].Key = PKEY_Sensor_MaximumDataFieldSize_Bytes;
InitPropVariantFromUInt32(CollectionsListGetMarshalledSize(m_pData),
&(m_pProperties->List[SENSOR_PROPERTY_MAX_DATAFIELDSIZE].Value));
m_pProperties->List[SENSOR_PROPERTY_SENSOR_TYPE].Key = PKEY_Sensor_Type;
InitPropVariantFromCLSID(GUID_SensorType_Pedometer,
&(m_pProperties->List[SENSOR_PROPERTY_SENSOR_TYPE].Value));
m_pProperties->List[SENSOR_PROPERTY_SENSOR_POWER].Key = PKEY_Sensor_Power_Milliwatts;
InitPropVariantFromFloat(Pedometer_Default_Power_Milliwatts,
&(m_pProperties->List[SENSOR_PROPERTY_SENSOR_POWER].Value));
m_pProperties->List[SENSOR_PROPERTY_MAX_HISTORYSIZE].Key = PKEY_SensorHistory_MaxSize_Bytes;
InitPropVariantFromUInt32(((FALSE != m_HistorySupported) ?
(SENSOR_COLLECTION_LIST_HEADER_SIZE + ((m_HistoryMarshalledRecordSize - SENSOR_COLLECTION_LIST_HEADER_SIZE) * HistorySizeInRecords)) :
0),
&(m_pProperties->List[SENSOR_PROPERTY_MAX_HISTORYSIZE].Value));
m_pProperties->List[SENSOR_PROPERTY_HISTORY_INTERVAL].Key = PKEY_SensorHistory_Interval_Ms;
InitPropVariantFromUInt32(pSimulator->GetHistoryIntervalInMs(),
&(m_pProperties->List[SENSOR_PROPERTY_HISTORY_INTERVAL].Value));
m_pProperties->List[SENSOR_PROPERTY_MAX_HISTROYRECORDSIZE].Key = PKEY_SensorHistory_MaximumRecordSize_Bytes;
InitPropVariantFromUInt32(m_HistoryMarshalledRecordSize,
&(m_pProperties->List[SENSOR_PROPERTY_MAX_HISTROYRECORDSIZE].Value));
m_pProperties->List[SENSOR_PROPERTY_SUPPORTED_STEPTYPES].Key = PKEY_SensorData_SupportedStepTypes;
InitPropVariantFromUInt32(PedometerStepType_Unknown | PedometerStepType_Walking | PedometerStepType_Running,
&(m_pProperties->List[SENSOR_PROPERTY_SUPPORTED_STEPTYPES].Value));
// Data field properties
Size = SENSOR_COLLECTION_LIST_SIZE(SENSOR_DATA_FIELD_PROPERTY_COUNT);
MemoryHandle = NULL;
WDF_OBJECT_ATTRIBUTES_INIT(&MemoryAttributes);
MemoryAttributes.ParentObject = SensorInstance;
Status = WdfMemoryCreate(&MemoryAttributes,
PagedPool,
SENSOR_POOL_TAG_PEDOMETER,
Size,
&MemoryHandle,
reinterpret_cast<PVOID*>(&m_pDataFieldProperties));
if (!NT_SUCCESS(Status) || nullptr == m_pDataFieldProperties)
{
TraceError("PED %!FUNC! WdfMemoryCreate failed %!STATUS!", Status);
goto Exit;
}
SENSOR_COLLECTION_LIST_INIT(m_pDataFieldProperties, Size);
m_pDataFieldProperties->Count = SENSOR_DATA_FIELD_PROPERTY_COUNT;
m_pDataFieldProperties->List[SENSOR_RESOLUTION].Key = PKEY_SensorDataField_Resolution;
InitPropVariantFromInt64(PedometerDevice_StepCount_Resolution,
&(m_pDataFieldProperties->List[SENSOR_RESOLUTION].Value));
m_pDataFieldProperties->List[SENSOR_MIN_RANGE].Key = PKEY_SensorDataField_RangeMinimum;
InitPropVariantFromUInt32(PedometerDevice_StepCount_Minimum,
&(m_pDataFieldProperties->List[SENSOR_MIN_RANGE].Value));
m_pDataFieldProperties->List[SENSOR_MAX_RANGE].Key = PKEY_SensorDataField_RangeMaximum;
InitPropVariantFromUInt32(PedometerDevice_StepCount_Maximum,
&(m_pDataFieldProperties->List[SENSOR_MAX_RANGE].Value));
// Set default threshold
m_FirstSample = TRUE;
Size = SENSOR_COLLECTION_LIST_SIZE(PEDOMETER_THRESHOLD_COUNT);
MemoryHandle = NULL;
WDF_OBJECT_ATTRIBUTES_INIT(&MemoryAttributes);
MemoryAttributes.ParentObject = SensorInstance;
Status = WdfMemoryCreate(&MemoryAttributes,
PagedPool,
SENSOR_POOL_TAG_PEDOMETER,
Size,
&MemoryHandle,
reinterpret_cast<PVOID*>(&m_pThresholds));
if (!NT_SUCCESS(Status) || nullptr == m_pThresholds)
{
TraceError("PED %!FUNC! WdfMemoryCreate failed %!STATUS!", Status);
goto Exit;
}
SENSOR_COLLECTION_LIST_INIT(m_pThresholds, Size);
m_pThresholds->Count = PEDOMETER_THRESHOLD_COUNT;
m_pThresholds->List[PEDOMETER_THRESHOLD_STEP_COUNT].Key = PKEY_SensorData_PedometerStepCount;
InitPropVariantFromUInt32(Pedometer_Default_Threshold_StepCount,
&(m_pThresholds->List[PEDOMETER_THRESHOLD_STEP_COUNT].Value));
m_CachedThreshold = Pedometer_Default_Threshold_StepCount;
Exit:
SENSOR_FunctionExit(Status);
return Status;
}
// This routine is called by worker thread to read a single sample, compare threshold
// and push it back to CLX. It simulates hardware thresholding by only generating data
// when the change of data is greater than threshold.
NTSTATUS
PedometerDevice::GetData(
)
{
PHardwareSimulator pSimulator = GetHardwareSimulatorContextFromInstance(m_SimulatorInstance);
BOOLEAN DataReady = FALSE;
NTSTATUS Status = STATUS_SUCCESS;
ULONG CachedStepCountLimit = 0;
ULONG LastStepCountLimit = 0;
PedometerSample Sample = {};
SENSOR_FunctionEnter();
if (nullptr == pSimulator)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
TraceError("PED %!FUNC! GetHardwareSimulatorContextFromInstance failed %!STATUS!", Status);
goto Exit;
}
Status = pSimulator->GetSample(&Sample);
if (!NT_SUCCESS(Status))
{
TraceError("PED %!FUNC! GetSample failed %!STATUS!", Status);
goto Exit;
}
if (FALSE != m_FirstSample)
{
Status = GetPerformanceTime(&m_StartTime);
if (!NT_SUCCESS(Status))
{
m_StartTime = 0;
TraceError("PED %!FUNC! GetPerformanceTime failed %!STATUS!", Status);
}
m_SampleCount = 0;
DataReady = TRUE;
}
else
{
if (0 == m_CachedThreshold || FALSE != Sample.IsFirstAfterReset)
{
// Streaming mode
DataReady = TRUE;
}
else
{
if (FAILED(ULongAdd(Sample.UnknownStepCount, Sample.WalkingStepCount, &CachedStepCountLimit)) ||
FAILED(ULongAdd(Sample.RunningStepCount, CachedStepCountLimit, &CachedStepCountLimit)))
{
// If an overflow happened, we assume we reached the threshold
// in other words, there is no threshold value that can be larger
// than an overflowed value.
DataReady = TRUE;
}
else if (FAILED(ULongAdd(m_LastSample.UnknownStepCount, m_LastSample.WalkingStepCount, &LastStepCountLimit)) ||
FAILED(ULongAdd(m_LastSample.RunningStepCount, LastStepCountLimit, &LastStepCountLimit)))
{
// If an overflow happened, we assume we reached the threshold
// in other words, there is no threshold value that can be larger
// than an overflowed value.
DataReady = TRUE;
}
else if ((LastStepCountLimit < m_CachedThreshold && CachedStepCountLimit >= m_CachedThreshold) ||
(FALSE != Sample.IsFirstAfterReset))
{
// Compare the change of data to threshold, and only push the data back to
// clx if the change exceeds threshold or if this is the first sample after reset. This is usually done in HW.
DataReady = TRUE;
}
}
}
if (FALSE != DataReady)
{
// update last sample
m_LastSample = Sample;
// push to clx
InitPropVariantFromBoolean(m_LastSample.IsFirstAfterReset, &(m_pData->List[PEDOMETER_DATA_FIRST_AFTER_RESET].Value));
InitPropVariantFromUInt32(PedometerStepType_Unknown, &(m_pData->List[PEDOMETER_DATA_UNKNOWN_STEP_TYPE].Value));
InitPropVariantFromInt64(m_LastSample.UnknownStepDurationMs, &(m_pData->List[PEDOMETER_DATA_UNKNOWN_STEP_DURATION].Value));
InitPropVariantFromUInt32(m_LastSample.UnknownStepCount, &(m_pData->List[PEDOMETER_DATA_UNKNOWN_STEP_COUNT].Value));
InitPropVariantFromUInt32(PedometerStepType_Walking, &(m_pData->List[PEDOMETER_DATA_WALKING_STEP_TYPE].Value));
InitPropVariantFromInt64(m_LastSample.WalkingStepDurationMs, &(m_pData->List[PEDOMETER_DATA_WALKING_STEP_DURATION].Value));
InitPropVariantFromUInt32(m_LastSample.WalkingStepCount, &(m_pData->List[PEDOMETER_DATA_WALKING_STEP_COUNT].Value));
InitPropVariantFromUInt32(PedometerStepType_Running, &(m_pData->List[PEDOMETER_DATA_RUNNING_STEP_TYPE].Value));
InitPropVariantFromInt64(m_LastSample.RunningStepDurationMs, &(m_pData->List[PEDOMETER_DATA_RUNNING_STEP_DURATION].Value));
InitPropVariantFromUInt32(m_LastSample.RunningStepCount, &(m_pData->List[PEDOMETER_DATA_RUNNING_STEP_COUNT].Value));
// reset IsFirstAfterReset
m_LastSample.IsFirstAfterReset = FALSE;
InitPropVariantFromFileTime(&m_LastSample.Timestamp, &(m_pData->List[PEDOMETER_DATA_TIMESTAMP].Value));
SensorsCxSensorDataReady(m_SensorInstance, m_pData);
m_FirstSample = FALSE;
}
else
{
Status = STATUS_DATA_NOT_ACCEPTED;
TraceInformation("PED %!FUNC! Data did NOT meet the threshold");
}
SENSOR_FunctionExit(Status);
Exit:
return Status;
}