org.android.activityminer.logic.devices
Class LinearAccelerometerDataSource

java.lang.Object
  org.android.activityminer.logic.util.AbstractActivatableComponentImpl
      org.android.activityminer.logic.devices.AbstractAccelerometerDataSource
          org.android.activityminer.logic.devices.LinearAccelerometerDataSource

All Implemented Interfaces:

EventObserver<ScreenChangeEvent>, ObservableEventSource<SampleGapErrorEvent>, ObserverRegistration<SampleGapErrorEvent>, SensorDataSource<AccelerometerData>, ActivatableComponent

public final class LinearAccelerometerDataSource
extends AbstractAccelerometerDataSource

Own implementation of an linear accelerometer data source using biquadratic filters.

Field Summary

private GravitationFilter	gFilter The gravitation filter
protected AtomicLong	lastSampleTs Last sample system time stamp.

Fields inherited from class org.android.activityminer.logic.devices.AbstractAccelerometerDataSource

cache, context, currentData, currentDataLock, currentFilterData, filter, sampleCount, sensorRate, startRefTime, startTs

Constructor Summary

LinearAccelerometerDataSource(Context context, FrequencyTypes fType, LowPassFilter filter, RuntimeConfiguration config)
Constructor

Method Summary

protected void	onActivationStateChange(boolean active) Handler for activation state changes
void	onSensorEventRawAcc(SensorEvent event) Handler for sensor events of the raw acceleration sensor
AccelerometerData	takeSample(Long ts) Getter for the current sample

Methods inherited from class org.android.activityminer.logic.devices.AbstractAccelerometerDataSource

getAverageSampleDistance, hasObservers, notify, onDestroy, onEvent, registerEventObserver, registerListener, removeAllObservers, setFilter, unregisterEventObserver, unregisterListener, updateFilterConfiguration

Methods inherited from class org.android.activityminer.logic.util.AbstractActivatableComponentImpl

isActive, setActivationState

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

gFilter

private final GravitationFilter gFilter

The gravitation filter

lastSampleTs

protected final AtomicLong lastSampleTs

Last sample system time stamp.

Constructor Detail

LinearAccelerometerDataSource

public LinearAccelerometerDataSource(Context context,
                                     FrequencyTypes fType,
                                     LowPassFilter filter,
                                     RuntimeConfiguration config)

Constructor

Parameters:

context - the application context

fType - the sample frequency type

filter - the filter to cut of frequencies above Nyquist

config - the runtime configuration

Method Detail

onSensorEventRawAcc

public final void onSensorEventRawAcc(SensorEvent event)

Description copied from class: AbstractAccelerometerDataSource

Handler for sensor events of the raw acceleration sensor

Specified by:

onSensorEventRawAcc in class AbstractAccelerometerDataSource

Parameters:

event - the sensor event

takeSample

public final AccelerometerData takeSample(Long ts)

Description copied from interface: SensorDataSource

Getter for the current sample

Specified by:

takeSample in interface SensorDataSource<AccelerometerData>

Overrides:

takeSample in class AbstractAccelerometerDataSource

Parameters:

ts - the requested time stamp

Returns:

the current sample

onActivationStateChange

protected void onActivationStateChange(boolean active)

Description copied from class: AbstractActivatableComponentImpl

Handler for activation state changes

Overrides:

onActivationStateChange in class AbstractAccelerometerDataSource

Parameters:

active - the new activation state