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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_SENSOR_SERVICE_H
#define ANDROID_SENSOR_SERVICE_H
#include <stdint.h>
#include <sys/types.h>
#include <utils/Vector.h>
#include <utils/SortedVector.h>
#include <utils/KeyedVector.h>
#include <utils/threads.h>
#include <utils/RefBase.h>
#include <binder/BinderService.h>
#include <gui/Sensor.h>
#include <gui/SensorChannel.h>
#include <gui/ISensorServer.h>
#include <gui/ISensorEventConnection.h>
#include "SensorInterface.h"
// ---------------------------------------------------------------------------
#define DEBUG_CONNECTIONS false
struct sensors_poll_device_t;
struct sensors_module_t;
namespace android {
// ---------------------------------------------------------------------------
class SensorService :
public BinderService<SensorService>,
public BnSensorServer,
protected Thread
{
friend class BinderService<SensorService>;
static const nsecs_t MINIMUM_EVENTS_PERIOD = 1000000; // 1000 Hz
SensorService();
virtual ~SensorService();
virtual void onFirstRef();
// Thread interface
virtual bool threadLoop();
// ISensorServer interface
virtual Vector<Sensor> getSensorList();
virtual sp<ISensorEventConnection> createSensorEventConnection();
virtual status_t dump(int fd, const Vector<String16>& args);
class SensorEventConnection : public BnSensorEventConnection {
virtual ~SensorEventConnection();
virtual void onFirstRef();
virtual sp<SensorChannel> getSensorChannel() const;
virtual status_t enableDisable(int handle, bool enabled);
virtual status_t setEventRate(int handle, nsecs_t ns);
sp<SensorService> const mService;
sp<SensorChannel> const mChannel;
mutable Mutex mConnectionLock;
// protected by SensorService::mLock
SortedVector<int> mSensorInfo;
public:
SensorEventConnection(const sp<SensorService>& service);
status_t sendEvents(sensors_event_t const* buffer, size_t count,
sensors_event_t* scratch = NULL);
bool hasSensor(int32_t handle) const;
bool hasAnySensor() const;
bool addSensor(int32_t handle);
bool removeSensor(int32_t handle);
};
class SensorRecord {
SortedVector< wp<SensorEventConnection> > mConnections;
public:
SensorRecord(const sp<SensorEventConnection>& connection);
bool addConnection(const sp<SensorEventConnection>& connection);
bool removeConnection(const wp<SensorEventConnection>& connection);
size_t getNumConnections() const { return mConnections.size(); }
};
SortedVector< wp<SensorEventConnection> > getActiveConnections() const;
DefaultKeyedVector<int, SensorInterface*> getActiveVirtualSensors() const;
String8 getSensorName(int handle) const;
void recordLastValue(sensors_event_t const * buffer, size_t count);
static void sortEventBuffer(sensors_event_t* buffer, size_t count);
void registerSensor(SensorInterface* sensor);
void registerVirtualSensor(SensorInterface* sensor);
// constants
Vector<Sensor> mSensorList;
Vector<Sensor> mUserSensorList;
DefaultKeyedVector<int, SensorInterface*> mSensorMap;
Vector<SensorInterface *> mVirtualSensorList;
status_t mInitCheck;
// protected by mLock
mutable Mutex mLock;
DefaultKeyedVector<int, SensorRecord*> mActiveSensors;
DefaultKeyedVector<int, SensorInterface*> mActiveVirtualSensors;
SortedVector< wp<SensorEventConnection> > mActiveConnections;
// The size of this vector is constant, only the items are mutable
KeyedVector<int32_t, sensors_event_t> mLastEventSeen;
public:
static char const* getServiceName() { return "sensorservice"; }
void cleanupConnection(SensorEventConnection* connection);
status_t enable(const sp<SensorEventConnection>& connection, int handle);
status_t disable(const sp<SensorEventConnection>& connection, int handle);
status_t setEventRate(const sp<SensorEventConnection>& connection, int handle, nsecs_t ns);
};
// ---------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_SENSOR_SERVICE_H
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