Sensor.cpp revision 589ce85ee4174829cfedce91b6b2509d2a4002eb
1589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian/* 2589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian * Copyright (C) 2010 The Android Open Source Project 3589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian * 4589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian * Licensed under the Apache License, Version 2.0 (the "License"); 5589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian * you may not use this file except in compliance with the License. 6589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian * You may obtain a copy of the License at 7589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian * 8589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian * http://www.apache.org/licenses/LICENSE-2.0 9589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian * 10589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian * Unless required by applicable law or agreed to in writing, software 11589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian * distributed under the License is distributed on an "AS IS" BASIS, 12589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian * See the License for the specific language governing permissions and 14589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian * limitations under the License. 15589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian */ 16589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 17589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian#include <stdint.h> 18589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian#include <sys/types.h> 19589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 20589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian#include <utils/Errors.h> 21589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian#include <utils/String8.h> 22589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian#include <utils/Flattenable.h> 23589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 24589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian#include <hardware/sensors.h> 25589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 26589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian#include <gui/Sensor.h> 27589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 28589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian// ---------------------------------------------------------------------------- 29589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopiannamespace android { 30589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian// ---------------------------------------------------------------------------- 31589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 32589ce85ee4174829cfedce91b6b2509d2a4002ebMathias AgopianSensor::Sensor() 33589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian : mHandle(0), mType(0), 34589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian mMinValue(0), mMaxValue(0), mResolution(0), 35589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian mPower(0) 36589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian{ 37589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 38589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 39589ce85ee4174829cfedce91b6b2509d2a4002ebMathias AgopianSensor::~Sensor() 40589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian{ 41589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 42589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 43589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianconst String8& Sensor::getName() const { 44589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return mName; 45589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 46589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 47589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianconst String8& Sensor::getVendor() const { 48589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return mVendor; 49589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 50589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 51589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianint32_t Sensor::getHandle() const { 52589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return mHandle; 53589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 54589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 55589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianint32_t Sensor::getType() const { 56589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return mType; 57589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 58589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 59589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianfloat Sensor::getMinValue() const { 60589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return mMinValue; 61589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 62589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 63589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianfloat Sensor::getMaxValue() const { 64589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return mMaxValue; 65589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 66589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 67589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianfloat Sensor::getResolution() const { 68589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return mResolution; 69589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 70589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 71589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianfloat Sensor::getPowerUsage() const { 72589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return mPower; 73589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 74589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 75589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopiansize_t Sensor::getFlattenedSize() const 76589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian{ 77589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return sizeof(int32_t) + ((mName.length() + 3) & ~3) + 78589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian sizeof(int32_t) + ((mVendor.length() + 3) & ~3) + 79589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian sizeof(int32_t) * 2 + 80589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian sizeof(float) * 3; 81589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 82589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 83589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopiansize_t Sensor::getFdCount() const 84589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian{ 85589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return 0; 86589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 87589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 88589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianstatic inline 89589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopiansize_t write(void* buffer, size_t offset, const String8& value) { 90589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian memcpy(static_cast<char*>(buffer) + offset, value.string(), value.length()); 91589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return (value.length() + 3) & ~3; 92589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 93589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 94589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianstatic inline 95589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopiansize_t write(void* buffer, size_t offset, float value) { 96589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian *reinterpret_cast<float*>(static_cast<char*>(buffer) + offset) = value; 97589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return sizeof(float); 98589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 99589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 100589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianstatic inline 101589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopiansize_t write(void* buffer, size_t offset, int32_t value) { 102589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian *reinterpret_cast<int32_t*>(static_cast<char*>(buffer) + offset) = value; 103589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return sizeof(int32_t); 104589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 105589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 106589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianstatus_t Sensor::flatten(void* buffer, size_t size, 107589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian int fds[], size_t count) const 108589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian{ 109589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian if (size < Sensor::getFlattenedSize()) 110589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return -ENOMEM; 111589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 112589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian size_t offset = 0; 113589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += write(buffer, offset, int32_t(mName.length())); 114589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += write(buffer, offset, mName); 115589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += write(buffer, offset, int32_t(mVendor.length())); 116589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += write(buffer, offset, mVendor); 117589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += write(buffer, offset, mHandle); 118589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += write(buffer, offset, mType); 119589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += write(buffer, offset, mMinValue); 120589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += write(buffer, offset, mMaxValue); 121589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += write(buffer, offset, mResolution); 122589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += write(buffer, offset, mPower); 123589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 124589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return NO_ERROR; 125589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 126589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 127589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianstatic inline 128589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopiansize_t read(void const* buffer, size_t offset, String8* value, int32_t len) { 129589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian value->setTo(static_cast<char const*>(buffer) + offset, len); 130589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return (len + 3) & ~3; 131589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 132589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 133589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianstatic inline 134589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopiansize_t read(void const* buffer, size_t offset, float* value) { 135589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian *value = *reinterpret_cast<float const*>(static_cast<char const*>(buffer) + offset); 136589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return sizeof(float); 137589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 138589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 139589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianstatic inline 140589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopiansize_t read(void const* buffer, size_t offset, int32_t* value) { 141589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian *value = *reinterpret_cast<int32_t const*>(static_cast<char const*>(buffer) + offset); 142589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return sizeof(int32_t); 143589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 144589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 145589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianstatus_t Sensor::unflatten(void const* buffer, size_t size, 146589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian int fds[], size_t count) 147589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian{ 148589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian int32_t len; 149589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian size_t offset = 0; 150589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += read(buffer, offset, &len); 151589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += read(buffer, offset, &mName, len); 152589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += read(buffer, offset, &len); 153589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += read(buffer, offset, &mVendor, len); 154589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += read(buffer, offset, &mHandle); 155589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += read(buffer, offset, &mType); 156589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += read(buffer, offset, &mMinValue); 157589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += read(buffer, offset, &mMaxValue); 158589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += read(buffer, offset, &mResolution); 159589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian offset += read(buffer, offset, &mPower); 160589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 161589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return NO_ERROR; 162589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 163589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 164589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian// ---------------------------------------------------------------------------- 165589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian}; // namespace android 166