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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_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() : count(0) { }
+ int32_t count;
+ 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