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////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2013 Laurent Gomila (laurent.gom@gmail.com)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Window/SensorImpl.hpp>
#include <SFML/System/Time.hpp>
#include <android/looper.h>
// Define missing constants
#define ASENSOR_TYPE_GRAVITY 0x00000009
#define ASENSOR_TYPE_LINEAR_ACCELERATION 0x0000000a
#define ASENSOR_TYPE_ORIENTATION 0x00000003
namespace
{
ALooper* looper;
ASensorManager* sensorManager;
ASensorEventQueue* sensorEventQueue;
sf::Vector3f sensorData[sf::Sensor::Count];
}
namespace sf
{
namespace priv
{
////////////////////////////////////////////////////////////
void SensorImpl::initialize()
{
// Get the looper associated with this thread
looper = ALooper_forThread();
// Get the unique sensor manager
sensorManager = ASensorManager_getInstance();
// Create the sensor events queue and attach it to the looper
sensorEventQueue = ASensorManager_createEventQueue(sensorManager, looper,
1, &processSensorEvents, NULL);
}
////////////////////////////////////////////////////////////
void SensorImpl::cleanup()
{
// Detach the sensor events queue from the looper and destroy it
ASensorManager_destroyEventQueue(sensorManager, sensorEventQueue);
}
////////////////////////////////////////////////////////////
bool SensorImpl::isAvailable(Sensor::Type sensor)
{
const ASensor* available = getDefaultSensor(sensor);
return available? true : false;
}
////////////////////////////////////////////////////////////
bool SensorImpl::open(Sensor::Type sensor)
{
// Get the default sensor matching the type
m_sensor = getDefaultSensor(sensor);
// Sensor not available, stop here
if (!m_sensor)
return false;
// Get the minimum delay allowed between events
Time minimumDelay = microseconds(ASensor_getMinDelay(m_sensor));
// Set the event rate (not to consume too much battery)
ASensorEventQueue_setEventRate(sensorEventQueue, m_sensor, minimumDelay.asMicroseconds());
// Save the index of the sensor
m_index = static_cast<unsigned int>(sensor);
return true;
}
////////////////////////////////////////////////////////////
void SensorImpl::close()
{
// Nothing to do
}
////////////////////////////////////////////////////////////
Vector3f SensorImpl::update()
{
// Update our sensor data list
ALooper_pollAll(0, NULL, NULL, NULL);
return sensorData[m_index];
}
////////////////////////////////////////////////////////////
void SensorImpl::setEnabled(bool enabled)
{
if (enabled)
ASensorEventQueue_enableSensor(sensorEventQueue, m_sensor);
else
ASensorEventQueue_disableSensor(sensorEventQueue, m_sensor);
}
////////////////////////////////////////////////////////////
ASensor const* SensorImpl::getDefaultSensor(Sensor::Type sensor)
{
// Find the Android sensor type
static int types[] = {ASENSOR_TYPE_ACCELEROMETER, ASENSOR_TYPE_GYROSCOPE,
ASENSOR_TYPE_MAGNETIC_FIELD, ASENSOR_TYPE_GRAVITY, ASENSOR_TYPE_LINEAR_ACCELERATION,
ASENSOR_TYPE_ORIENTATION};
int type = types[sensor];
// Retrieve the default sensor matching this type
return ASensorManager_getDefaultSensor(sensorManager, type);
}
////////////////////////////////////////////////////////////
int SensorImpl::processSensorEvents(int fd, int events, void* data)
{
ASensorEvent event;
while (ASensorEventQueue_getEvents(sensorEventQueue, &event, 1) > 0)
{
unsigned int type = Sensor::Count;
Vector3f data;
switch (event.type)
{
case ASENSOR_TYPE_ACCELEROMETER:
type = Sensor::Accelerometer;
data.x = event.acceleration.x;
data.y = event.acceleration.y;
data.z = event.acceleration.z;
break;
case ASENSOR_TYPE_GYROSCOPE:
type = Sensor::Gyroscope;
data.x = event.vector.x;
data.y = event.vector.y;
data.z = event.vector.z;
break;
case ASENSOR_TYPE_MAGNETIC_FIELD:
type = Sensor::Magnetometer;
data.x = event.magnetic.x;
data.y = event.magnetic.y;
data.z = event.magnetic.z;
break;
case ASENSOR_TYPE_GRAVITY:
type = Sensor::Gravity;
data.x = event.vector.x;
data.y = event.vector.y;
data.z = event.vector.z;
break;
case ASENSOR_TYPE_LINEAR_ACCELERATION:
type = Sensor::UserAcceleration;
data.x = event.acceleration.x;
data.y = event.acceleration.y;
data.z = event.acceleration.z;
break;
case ASENSOR_TYPE_ORIENTATION:
type = Sensor::Orientation;
data.x = event.vector.x;
data.y = event.vector.y;
data.z = event.vector.z;
break;
}
// An unknown sensor event has been detected, we don't know how to process it
if (type == Sensor::Count)
continue;
sensorData[type] = data;
}
return 1;
}
} // namespace priv
} // namespace sf
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