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 */ 16a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian 17a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian#define LOG_TAG "Sensors" 18a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian 19589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian#include <stdint.h> 20589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian#include <sys/types.h> 21589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 22589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian#include <utils/Errors.h> 23589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian#include <utils/RefBase.h> 2459abe7e0909bf4b7bf7b9601e1e40a05f6d4fd8aJeff Brown#include <utils/Looper.h> 25589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 26589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian#include <gui/Sensor.h> 275cae0d0699a169e468fff3e21165f35db12f2cdeMathias Agopian#include <gui/BitTube.h> 28589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian#include <gui/SensorEventQueue.h> 29589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian#include <gui/ISensorEventConnection.h> 30589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 31589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian#include <android/sensor.h> 32589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 33589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian// ---------------------------------------------------------------------------- 34589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopiannamespace android { 35589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian// ---------------------------------------------------------------------------- 36589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 37589ce85ee4174829cfedce91b6b2509d2a4002ebMathias AgopianSensorEventQueue::SensorEventQueue(const sp<ISensorEventConnection>& connection) 38589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian : mSensorEventConnection(connection) 39589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian{ 40589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 41589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 42589ce85ee4174829cfedce91b6b2509d2a4002ebMathias AgopianSensorEventQueue::~SensorEventQueue() 43589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian{ 44589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 45589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 46589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianvoid SensorEventQueue::onFirstRef() 47589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian{ 48589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian mSensorChannel = mSensorEventConnection->getSensorChannel(); 49589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 50589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 51589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianint SensorEventQueue::getFd() const 52589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian{ 53589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return mSensorChannel->getFd(); 54589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 55589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 567b5be95cb3903087742f1079fe89cddd8abe3696Mathias Agopian 577b5be95cb3903087742f1079fe89cddd8abe3696Mathias Agopianssize_t SensorEventQueue::write(const sp<BitTube>& tube, 587b5be95cb3903087742f1079fe89cddd8abe3696Mathias Agopian ASensorEvent const* events, size_t numEvents) { 597b5be95cb3903087742f1079fe89cddd8abe3696Mathias Agopian return BitTube::sendObjects(tube, events, numEvents); 60589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 61589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 62589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopianssize_t SensorEventQueue::read(ASensorEvent* events, size_t numEvents) 63589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian{ 647b5be95cb3903087742f1079fe89cddd8abe3696Mathias Agopian return BitTube::recvObjects(mSensorChannel, events, numEvents); 65589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 66589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 6759abe7e0909bf4b7bf7b9601e1e40a05f6d4fd8aJeff Brownsp<Looper> SensorEventQueue::getLooper() const 68589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian{ 69a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian Mutex::Autolock _l(mLock); 7059abe7e0909bf4b7bf7b9601e1e40a05f6d4fd8aJeff Brown if (mLooper == 0) { 7159abe7e0909bf4b7bf7b9601e1e40a05f6d4fd8aJeff Brown mLooper = new Looper(true); 7259abe7e0909bf4b7bf7b9601e1e40a05f6d4fd8aJeff Brown mLooper->addFd(getFd(), getFd(), ALOOPER_EVENT_INPUT, NULL, NULL); 73a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian } 7459abe7e0909bf4b7bf7b9601e1e40a05f6d4fd8aJeff Brown return mLooper; 75589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 76589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 77a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopianstatus_t SensorEventQueue::waitForEvent() const 78589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian{ 79a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian const int fd = getFd(); 8059abe7e0909bf4b7bf7b9601e1e40a05f6d4fd8aJeff Brown sp<Looper> looper(getLooper()); 81aeda9afdba5c28d4d152e3ec3bce74be42949065Mathias Agopian 8229267fe8495a74893dfce1bd9eceb6448df7abeaMathias Agopian int events; 83aeda9afdba5c28d4d152e3ec3bce74be42949065Mathias Agopian int32_t result; 84aeda9afdba5c28d4d152e3ec3bce74be42949065Mathias Agopian do { 8529267fe8495a74893dfce1bd9eceb6448df7abeaMathias Agopian result = looper->pollOnce(-1, NULL, &events, NULL); 8629267fe8495a74893dfce1bd9eceb6448df7abeaMathias Agopian if (result == ALOOPER_POLL_ERROR) { 87e6f43ddce78d6846af12550ff9193c5c6fe5844bSteve Block ALOGE("SensorEventQueue::waitForEvent error (errno=%d)", errno); 88aeda9afdba5c28d4d152e3ec3bce74be42949065Mathias Agopian result = -EPIPE; // unknown error, so we make up one 89aeda9afdba5c28d4d152e3ec3bce74be42949065Mathias Agopian break; 90aeda9afdba5c28d4d152e3ec3bce74be42949065Mathias Agopian } 9129267fe8495a74893dfce1bd9eceb6448df7abeaMathias Agopian if (events & ALOOPER_EVENT_HANGUP) { 9229267fe8495a74893dfce1bd9eceb6448df7abeaMathias Agopian // the other-side has died 9329267fe8495a74893dfce1bd9eceb6448df7abeaMathias Agopian ALOGE("SensorEventQueue::waitForEvent error HANGUP"); 9429267fe8495a74893dfce1bd9eceb6448df7abeaMathias Agopian result = -EPIPE; // unknown error, so we make up one 9529267fe8495a74893dfce1bd9eceb6448df7abeaMathias Agopian break; 9629267fe8495a74893dfce1bd9eceb6448df7abeaMathias Agopian } 97aeda9afdba5c28d4d152e3ec3bce74be42949065Mathias Agopian } while (result != fd); 98aeda9afdba5c28d4d152e3ec3bce74be42949065Mathias Agopian 992ffb24799e579c47a73c992ab567f05c4bf0c962Mathias Agopian return (result == fd) ? status_t(NO_ERROR) : result; 100589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 101589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 102a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopianstatus_t SensorEventQueue::wake() const 103589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian{ 10459abe7e0909bf4b7bf7b9601e1e40a05f6d4fd8aJeff Brown sp<Looper> looper(getLooper()); 10559abe7e0909bf4b7bf7b9601e1e40a05f6d4fd8aJeff Brown looper->wake(); 106a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian return NO_ERROR; 107a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian} 108a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian 109a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopianstatus_t SensorEventQueue::enableSensor(Sensor const* sensor) const { 110a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian return mSensorEventConnection->enableDisable(sensor->getHandle(), true); 111a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian} 112a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian 113a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopianstatus_t SensorEventQueue::disableSensor(Sensor const* sensor) const { 114a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian return mSensorEventConnection->enableDisable(sensor->getHandle(), false); 115a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian} 116a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian 117a48bcf62b6a26f24a0bdd2b44bb39fadce499e92Mathias Agopianstatus_t SensorEventQueue::enableSensor(int32_t handle, int32_t us) const { 118e3c8234765050023b8a588607f819e8cc41a6363Mathias Agopian status_t err = mSensorEventConnection->enableDisable(handle, true); 119e3c8234765050023b8a588607f819e8cc41a6363Mathias Agopian if (err == NO_ERROR) { 120a48bcf62b6a26f24a0bdd2b44bb39fadce499e92Mathias Agopian mSensorEventConnection->setEventRate(handle, us2ns(us)); 121e3c8234765050023b8a588607f819e8cc41a6363Mathias Agopian } 122e3c8234765050023b8a588607f819e8cc41a6363Mathias Agopian return err; 123a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian} 124a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian 125a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopianstatus_t SensorEventQueue::disableSensor(int32_t handle) const { 126a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian return mSensorEventConnection->enableDisable(handle, false); 127a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian} 128a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopian 129a7352c9f4a6e642c29782b19db5bc0bd98feddc8Mathias Agopianstatus_t SensorEventQueue::setEventRate(Sensor const* sensor, nsecs_t ns) const { 130589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian return mSensorEventConnection->setEventRate(sensor->getHandle(), ns); 131589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian} 132589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 133589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian// ---------------------------------------------------------------------------- 134589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian}; // namespace android 135589ce85ee4174829cfedce91b6b2509d2a4002ebMathias Agopian 136