1/*
2 * Copyright (C) 2008 The Android Open Source Project
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/*****************************************************************************/
26
27struct input_event;
28
29class InputEventCircularReader
30{
31    struct input_event* const mBuffer;
32    struct input_event* const mBufferEnd;
33    struct input_event* mHead;
34    struct input_event* mCurr;
35    ssize_t mFreeSpace;
36
37public:
38    InputEventCircularReader(size_t numEvents);
39    ~InputEventCircularReader();
40    ssize_t fill(int fd);
41    ssize_t readEvent(input_event const** events);
42    void next();
43};
44
45/*****************************************************************************/
46
47#endif  // ANDROID_INPUT_EVENT_READER_H
48