1/*
2 * Copyright (C) 2009 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 UTILS_H_
18
19#define UTILS_H_
20
21#include <stdint.h>
22
23namespace android {
24
25#define FOURCC(c1, c2, c3, c4) \
26    (c1 << 24 | c2 << 16 | c3 << 8 | c4)
27
28uint16_t U16_AT(const uint8_t *ptr);
29uint32_t U32_AT(const uint8_t *ptr);
30uint64_t U64_AT(const uint8_t *ptr);
31
32uint16_t U16LE_AT(const uint8_t *ptr);
33uint32_t U32LE_AT(const uint8_t *ptr);
34uint64_t U64LE_AT(const uint8_t *ptr);
35
36uint64_t ntoh64(uint64_t x);
37uint64_t hton64(uint64_t x);
38
39}  // namespace android
40
41#endif  // UTILS_H_
42