You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
99 lines
3.0 KiB
99 lines
3.0 KiB
6 years ago
|
/*
|
||
|
|
* 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_EVENT_QUEUE_H
|
||
|
|
#define ANDROID_SENSOR_EVENT_QUEUE_H
|
||
|
|
|
||
|
|
#include <stdint.h>
|
||
|
|
#include <sys/types.h>
|
||
|
|
|
||
|
|
#include <utils/Errors.h>
|
||
|
|
#include <utils/RefBase.h>
|
||
|
|
#include <utils/Timers.h>
|
||
|
|
#include <utils/String16.h>
|
||
|
|
|
||
|
|
#include <gui/BitTube.h>
|
||
|
|
|
||
|
|
// ----------------------------------------------------------------------------
|
||
|
|
#define WAKE_UP_SENSOR_EVENT_NEEDS_ACK (1U << 31)
|
||
|
|
struct ALooper;
|
||
|
|
struct ASensorEvent;
|
||
|
|
|
||
|
|
// Concrete types for the NDK
|
||
|
|
struct ASensorEventQueue {
|
||
|
|
ALooper* looper;
|
||
|
|
};
|
||
|
|
|
||
|
|
// ----------------------------------------------------------------------------
|
||
|
|
namespace android {
|
||
|
|
// ----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
class ISensorEventConnection;
|
||
|
|
class Sensor;
|
||
|
|
class Looper;
|
||
|
|
|
||
|
|
// ----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
class SensorEventQueue : public ASensorEventQueue, public RefBase
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
|
||
|
|
enum { MAX_RECEIVE_BUFFER_EVENT_COUNT = 256 };
|
||
|
|
|
||
|
|
SensorEventQueue(const sp<ISensorEventConnection>& connection);
|
||
|
|
virtual ~SensorEventQueue();
|
||
|
|
virtual void onFirstRef();
|
||
|
|
|
||
|
|
int getFd() const;
|
||
|
|
|
||
|
|
static ssize_t write(const sp<BitTube>& tube,
|
||
|
|
ASensorEvent const* events, size_t numEvents);
|
||
|
|
|
||
|
|
ssize_t read(ASensorEvent* events, size_t numEvents);
|
||
|
|
|
||
|
|
status_t waitForEvent() const;
|
||
|
|
status_t wake() const;
|
||
|
|
|
||
|
|
status_t enableSensor(Sensor const* sensor) const;
|
||
|
|
status_t disableSensor(Sensor const* sensor) const;
|
||
|
|
status_t setEventRate(Sensor const* sensor, nsecs_t ns) const;
|
||
|
|
|
||
|
|
// these are here only to support SensorManager.java
|
||
|
|
status_t enableSensor(int32_t handle, int32_t samplingPeriodUs, int maxBatchReportLatencyUs,
|
||
|
|
int reservedFlags) const;
|
||
|
|
status_t disableSensor(int32_t handle) const;
|
||
|
|
status_t flush() const;
|
||
|
|
// Send an ack for every wake_up sensor event that is set to WAKE_UP_SENSOR_EVENT_NEEDS_ACK.
|
||
|
|
void sendAck(const ASensorEvent* events, int count);
|
||
|
|
|
||
|
|
status_t injectSensorEvent(const ASensorEvent& event);
|
||
|
|
private:
|
||
|
|
sp<Looper> getLooper() const;
|
||
|
|
sp<ISensorEventConnection> mSensorEventConnection;
|
||
|
|
sp<BitTube> mSensorChannel;
|
||
|
|
mutable Mutex mLock;
|
||
|
|
mutable sp<Looper> mLooper;
|
||
|
|
ASensorEvent* mRecBuffer;
|
||
|
|
size_t mAvailable;
|
||
|
|
size_t mConsumed;
|
||
|
|
uint32_t mNumAcksToSend;
|
||
|
|
};
|
||
|
|
|
||
|
|
// ----------------------------------------------------------------------------
|
||
|
|
}; // namespace android
|
||
|
|
|
||
|
|
#endif // ANDROID_SENSOR_EVENT_QUEUE_H
|