50b66767f6
whether a physical sensor needed to be active or not was managed by a simpe reference counter; unfortunatelly nothing prevented it to get out of sync if a sensor was disabled more than once. sensorservice already maintainted a list of all the "clients" connected to a physical sensor; we now use that list to determine if a sensor should be enabled. This can never be "out-of-sync" since this is the only data structure linking a sensor to a user of that sensor. also removed the isEnabled() method, which was never used and implemented wrongly (since it didn't take into account that a sensor could be disabled for a client but not of another). Change-Id: I789affb877728ca957e99f7ba749def37c4db1c7
62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
/*
|
|
* 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_DEVICE_H
|
|
#define ANDROID_SENSOR_DEVICE_H
|
|
|
|
#include <stdint.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <utils/KeyedVector.h>
|
|
#include <utils/Singleton.h>
|
|
#include <utils/String8.h>
|
|
|
|
#include <gui/Sensor.h>
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
namespace android {
|
|
// ---------------------------------------------------------------------------
|
|
|
|
static const nsecs_t DEFAULT_EVENTS_PERIOD = 200000000; // 5 Hz
|
|
|
|
class SensorDevice : public Singleton<SensorDevice> {
|
|
friend class Singleton<SensorDevice>;
|
|
struct sensors_poll_device_t* mSensorDevice;
|
|
struct sensors_module_t* mSensorModule;
|
|
Mutex mLock; // protect mActivationCount[].rates
|
|
// fixed-size array after construction
|
|
struct Info {
|
|
Info() { }
|
|
KeyedVector<void*, nsecs_t> rates;
|
|
};
|
|
DefaultKeyedVector<int, Info> mActivationCount;
|
|
|
|
SensorDevice();
|
|
public:
|
|
ssize_t getSensorList(sensor_t const** list);
|
|
status_t initCheck() const;
|
|
ssize_t poll(sensors_event_t* buffer, size_t count);
|
|
status_t activate(void* ident, int handle, int enabled);
|
|
status_t setDelay(void* ident, int handle, int64_t ns);
|
|
void dump(String8& result, char* buffer, size_t SIZE);
|
|
};
|
|
|
|
// ---------------------------------------------------------------------------
|
|
}; // namespace android
|
|
|
|
#endif // ANDROID_SENSOR_DEVICE_H
|