1/*
2 * Copyright 2014 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 IMG_UTILS_OUTPUT_H
18#define IMG_UTILS_OUTPUT_H
19
20#include <cutils/compiler.h>
21#include <utils/Errors.h>
22#include <stdint.h>
23
24namespace android {
25namespace img_utils {
26
27/**
28 * Utility class used to output bytes.
29 */
30class ANDROID_API Output {
31    public:
32        virtual ~Output();
33
34        /**
35         * Open this Output.
36         *
37         * Returns OK on success, or a negative error code.
38         */
39        virtual status_t open();
40
41        /**
42         * Write bytes from the given buffer.  The number of bytes given in the count
43         * argument will be written.  Bytes will be written from the given buffer starting
44         * at the index given in the offset argument.
45         *
46         * Returns OK on success, or a negative error code.
47         */
48        virtual status_t write(const uint8_t* buf, size_t offset, size_t count) = 0;
49
50        /**
51         * Close this Output.  It is not valid to call open on a previously closed Output.
52         *
53         * Returns OK on success, or a negative error code.
54         */
55        virtual status_t close();
56};
57
58} /*namespace img_utils*/
59} /*namespace android*/
60
61#endif /*IMG_UTILS_OUTPUT_H*/
62