hmz007
36ed224bac
Signed-off-by: hmz007 <hmz007@gmail.com> Change-Id: Ib87fdbe7a0be7dc961af3500fe9ea4589a127f9f
50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
/*
|
|
* Copyright (C) 2021 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.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <errno.h>
|
|
#include <stdint.h>
|
|
#include <sys/cdefs.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <linux/input.h>
|
|
/*****************************************************************************/
|
|
|
|
struct input_event;
|
|
|
|
class InputEventCircularReader {
|
|
struct input_event* const mBuffer;
|
|
struct input_event* const mBufferEnd;
|
|
struct input_event* mHead;
|
|
struct input_event* mCurr;
|
|
ssize_t mTotalSpace;
|
|
|
|
public:
|
|
InputEventCircularReader();
|
|
InputEventCircularReader(size_t numEvents);
|
|
~InputEventCircularReader();
|
|
ssize_t fill(int fd);
|
|
ssize_t readEvent(input_event const** events);
|
|
void next();
|
|
|
|
private:
|
|
ssize_t getFreeSpace();
|
|
ssize_t getDirtySpace();
|
|
};
|
|
|
|
/*****************************************************************************/
|