1f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian/* 2f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian * Copyright (C) 2010 The Android Open Source Project 3f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian * 4f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian * Licensed under the Apache License, Version 2.0 (the "License"); 5f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian * you may not use this file except in compliance with the License. 6f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian * You may obtain a copy of the License at 7f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian * 8f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian * http://www.apache.org/licenses/LICENSE-2.0 9f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian * 10f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian * Unless required by applicable law or agreed to in writing, software 11f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian * distributed under the License is distributed on an "AS IS" BASIS, 12f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian * See the License for the specific language governing permissions and 14f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian * limitations under the License. 15f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian */ 16f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian 17f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian#ifndef ANDROID_SENSOR_DEVICE_H 18f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian#define ANDROID_SENSOR_DEVICE_H 19f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian 20f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian#include <stdint.h> 21f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian#include <sys/types.h> 22f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian 23f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian#include <utils/KeyedVector.h> 24f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian#include <utils/Singleton.h> 25f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian#include <utils/String8.h> 26f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian 27f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian#include <gui/Sensor.h> 28f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian 29f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian// --------------------------------------------------------------------------- 30f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian 31f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopiannamespace android { 32f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian// --------------------------------------------------------------------------- 33f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian 34f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopianclass SensorDevice : public Singleton<SensorDevice> { 35f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian friend class Singleton<SensorDevice>; 36724d91d778e71c8186399f4955de14b54812b3edAravind Akella sensors_poll_device_1_t* mSensorDevice; 37f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian struct sensors_module_t* mSensorModule; 38724d91d778e71c8186399f4955de14b54812b3edAravind Akella static const nsecs_t MINIMUM_EVENTS_PERIOD = 1000000; // 1000 Hz 39724d91d778e71c8186399f4955de14b54812b3edAravind Akella mutable Mutex mLock; // protect mActivationCount[].batchParams 40f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian // fixed-size array after construction 41724d91d778e71c8186399f4955de14b54812b3edAravind Akella 42724d91d778e71c8186399f4955de14b54812b3edAravind Akella // Struct to store all the parameters(samplingPeriod, maxBatchReportLatency and flags) from 43724d91d778e71c8186399f4955de14b54812b3edAravind Akella // batch call. For continous mode clients, maxBatchReportLatency is set to zero. 44724d91d778e71c8186399f4955de14b54812b3edAravind Akella struct BatchParams { 45724d91d778e71c8186399f4955de14b54812b3edAravind Akella int flags; 46724d91d778e71c8186399f4955de14b54812b3edAravind Akella nsecs_t batchDelay, batchTimeout; 47724d91d778e71c8186399f4955de14b54812b3edAravind Akella BatchParams() : flags(0), batchDelay(0), batchTimeout(0) {} 48724d91d778e71c8186399f4955de14b54812b3edAravind Akella BatchParams(int flag, nsecs_t delay, nsecs_t timeout): flags(flag), batchDelay(delay), 49724d91d778e71c8186399f4955de14b54812b3edAravind Akella batchTimeout(timeout) { } 50724d91d778e71c8186399f4955de14b54812b3edAravind Akella bool operator != (const BatchParams& other) { 51724d91d778e71c8186399f4955de14b54812b3edAravind Akella return other.batchDelay != batchDelay || other.batchTimeout != batchTimeout || 52724d91d778e71c8186399f4955de14b54812b3edAravind Akella other.flags != flags; 53724d91d778e71c8186399f4955de14b54812b3edAravind Akella } 54724d91d778e71c8186399f4955de14b54812b3edAravind Akella }; 55724d91d778e71c8186399f4955de14b54812b3edAravind Akella 56724d91d778e71c8186399f4955de14b54812b3edAravind Akella // Store batch parameters in the KeyedVector and the optimal batch_rate and timeout in 57724d91d778e71c8186399f4955de14b54812b3edAravind Akella // bestBatchParams. For every batch() call corresponding params are stored in batchParams 58724d91d778e71c8186399f4955de14b54812b3edAravind Akella // vector. A continuous mode request is batch(... timeout=0 ..) followed by activate(). A batch 59724d91d778e71c8186399f4955de14b54812b3edAravind Akella // mode request is batch(... timeout > 0 ...) followed by activate(). 60724d91d778e71c8186399f4955de14b54812b3edAravind Akella // Info is a per-sensor data structure which contains the batch parameters for each client that 61724d91d778e71c8186399f4955de14b54812b3edAravind Akella // has registered for this sensor. 62f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian struct Info { 63724d91d778e71c8186399f4955de14b54812b3edAravind Akella BatchParams bestBatchParams; 64724d91d778e71c8186399f4955de14b54812b3edAravind Akella // Key is the unique identifier(ident) for each client, value is the batch parameters 65724d91d778e71c8186399f4955de14b54812b3edAravind Akella // requested by the client. 66724d91d778e71c8186399f4955de14b54812b3edAravind Akella KeyedVector<void*, BatchParams> batchParams; 67724d91d778e71c8186399f4955de14b54812b3edAravind Akella 68724d91d778e71c8186399f4955de14b54812b3edAravind Akella Info() : bestBatchParams(-1, -1, -1) {} 69724d91d778e71c8186399f4955de14b54812b3edAravind Akella // Sets batch parameters for this ident. Returns error if this ident is not already present 70724d91d778e71c8186399f4955de14b54812b3edAravind Akella // in the KeyedVector above. 71724d91d778e71c8186399f4955de14b54812b3edAravind Akella status_t setBatchParamsForIdent(void* ident, int flags, int64_t samplingPeriodNs, 72724d91d778e71c8186399f4955de14b54812b3edAravind Akella int64_t maxBatchReportLatencyNs); 73724d91d778e71c8186399f4955de14b54812b3edAravind Akella // Finds the optimal parameters for batching and stores them in bestBatchParams variable. 74724d91d778e71c8186399f4955de14b54812b3edAravind Akella void selectBatchParams(); 75724d91d778e71c8186399f4955de14b54812b3edAravind Akella // Removes batchParams for an ident and re-computes bestBatchParams. Returns the index of 76724d91d778e71c8186399f4955de14b54812b3edAravind Akella // the removed ident. If index >=0, ident is present and successfully removed. 77724d91d778e71c8186399f4955de14b54812b3edAravind Akella ssize_t removeBatchParamsForIdent(void* ident); 78f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian }; 79f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian DefaultKeyedVector<int, Info> mActivationCount; 80f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian 81f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian SensorDevice(); 82f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopianpublic: 83f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian ssize_t getSensorList(sensor_t const** list); 84f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian status_t initCheck() const; 854342fdf14ffb792a36c1de25ad14b745df628da2Jaikumar Ganesh int getHalDeviceVersion() const; 86f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian ssize_t poll(sensors_event_t* buffer, size_t count); 87f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian status_t activate(void* ident, int handle, int enabled); 88724d91d778e71c8186399f4955de14b54812b3edAravind Akella status_t batch(void* ident, int handle, int flags, int64_t samplingPeriodNs, 89724d91d778e71c8186399f4955de14b54812b3edAravind Akella int64_t maxBatchReportLatencyNs); 90724d91d778e71c8186399f4955de14b54812b3edAravind Akella // Call batch with timeout zero instead of calling setDelay() for newer devices. 91f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian status_t setDelay(void* ident, int handle, int64_t ns); 92724d91d778e71c8186399f4955de14b54812b3edAravind Akella status_t flush(void* ident, int handle); 93ac9a96da65f6eae4513654adaad8a457d1c1575cMathias Agopian void autoDisable(void *ident, int handle); 94ba02cd2f6cc3f59adf66cb2b9176bfe6c9e382d1Mathias Agopian void dump(String8& result); 95f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian}; 96f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian 97f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian// --------------------------------------------------------------------------- 98f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian}; // namespace android 99f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian 100f001c92436b4a66eb7687286325ced7f10c9f917Mathias Agopian#endif // ANDROID_SENSOR_DEVICE_H 101