1/* 2* Copyright (C) 2014 Invensense, Inc. 3* 4* Licensed under the Apache License, Version 2.0 (the "License"); 5* you may not use this file except in compliance with the License. 6* You may obtain a copy of the License at 7* 8* http://www.apache.org/licenses/LICENSE-2.0 9* 10* Unless required by applicable law or agreed to in writing, software 11* distributed under the License is distributed on an "AS IS" BASIS, 12* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13* See the License for the specific language governing permissions and 14* limitations under the License. 15*/ 16 17#ifndef ANDROID_INPUT_EVENT_READER_H 18#define ANDROID_INPUT_EVENT_READER_H 19 20#include <stdint.h> 21#include <errno.h> 22#include <sys/cdefs.h> 23#include <sys/types.h> 24 25#include "SensorBase.h" 26 27/*****************************************************************************/ 28 29struct input_event; 30 31class InputEventCircularReader 32{ 33 struct input_event* const mBuffer; 34 struct input_event* const mBufferEnd; 35 struct input_event* mHead; 36 struct input_event* mCurr; 37 ssize_t mFreeSpace; 38 int mLastFd; 39 40public: 41 InputEventCircularReader(size_t numEvents); 42 ~InputEventCircularReader(); 43 ssize_t fill(int fd); 44 ssize_t readEvent(input_event const** events); 45 void next(); 46}; 47 48/*****************************************************************************/ 49 50#endif // ANDROID_INPUT_EVENT_READER_H 51