1#ifndef _VKSENDIAN_HPP
2#define _VKSENDIAN_HPP
3
4/*-------------------------------------------------------------------------
5 * Vulkan CTS Framework
6 * --------------------
7 *
8 * Copyright (c) 2021 The Khronos Group Inc.
9 *
10 * Licensed under the Apache License, Version 2.0 (the "License");
11 * you may not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
13 *
14 *      http://www.apache.org/licenses/LICENSE-2.0
15 *
16 * Unless required by applicable law or agreed to in writing, software
17 * distributed under the License is distributed on an "AS IS" BASIS,
18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 * See the License for the specific language governing permissions and
20 * limitations under the License.
21 *
22 *-------------------------------------------------------------------------*/
23
24#include "vksCommon.hpp"
25
26#include <deInt32.h>
27
28namespace vksc_server
29{
30
31	constexpr bool IsBigEndian ()
32	{
33		return (DE_ENDIANNESS) == (DE_BIG_ENDIAN);
34	}
35
36	constexpr u64 ReverseBytes64(u64 n)
37	{
38		return (
39			((n & u64{0xFF00000000000000}) >> 56) |
40			((n & u64{0x00FF000000000000}) >> 40) |
41			((n & u64{0x0000FF0000000000}) >> 24) |
42			((n & u64{0x000000FF00000000}) >> 8)  |
43			((n & u64{0x00000000FF000000}) << 8)  |
44			((n & u64{0x0000000000FF0000}) << 24) |
45			((n & u64{0x000000000000FF00}) << 40) |
46			((n & u64{0x00000000000000FF}) << 56)
47		);
48	}
49
50#if DE_ENDIANNESS == DE_LITTLE_ENDIAN
51	inline u16 HostToNetwork16 (u16 host) { return deReverseBytes16(host); }
52	inline u32 HostToNetwork32 (u32 host) { return deReverseBytes32(host); }
53	inline u64 HostToNetwork64 (u64 host) { return   ReverseBytes64(host); }
54#elif DE_ENDIANNESS == DE_BIG_ENDIAN
55	inline u16 HostToNetwork16 (u16 host) { return host; }
56	inline u32 HostToNetwork32 (u32 host) { return host; }
57	inline u64 HostToNetwork64 (u64 host) { return host; }
58#endif
59
60	inline u16 NetworkToHost16 (u16 net) { return HostToNetwork16(net); }
61	inline u32 NetworkToHost32 (u32 net) { return HostToNetwork32(net); }
62	inline u64 NetworkToHost64 (u64 net) { return HostToNetwork64(net); }
63
64}
65
66#endif // _VKSENDIAN_HPP
67