1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
//
// Endian.c - MrsWatson
// Created by Nik Reiman on 10 Dec 14.
// Copyright (c) 2014 Teragon Audio. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
#include "base/Endian.h"
#include "base/PlatformInfo.h"
unsigned short flipShortEndian(const unsigned short value)
{
return (value << 8) | (value >> 8);
}
unsigned short convertBigEndianShortToPlatform(const unsigned short value)
{
if (platformInfoIsLittleEndian()) {
return (value << 8) | (value >> 8);
} else {
return value;
}
}
unsigned int convertBigEndianIntToPlatform(const unsigned int value)
{
if (platformInfoIsLittleEndian()) {
return (value << 24) | ((value << 8) & 0x00ff0000) | ((value >> 8) & 0x0000ff00) | (value >> 24);
} else {
return value;
}
}
unsigned int convertLittleEndianIntToPlatform(const unsigned int value)
{
if (!platformInfoIsLittleEndian()) {
return (value << 24) | ((value << 8) & 0x00ff0000) | ((value >> 8) & 0x0000ff00) | (value >> 24);
} else {
return value;
}
}
unsigned short convertByteArrayToUnsignedShort(const byte *value)
{
if (platformInfoIsLittleEndian()) {
return ((value[1] << 8) & 0x0000ff00) | value[0];
} else {
return ((value[0] << 8) & 0x0000ff00) | value[1];
}
}
unsigned int convertByteArrayToUnsignedInt(const byte *value)
{
if (platformInfoIsLittleEndian()) {
return ((value[3] << 24) | ((value[2] << 16) & 0x00ff0000) |
((value[1] << 8) & 0x0000ff00) | value[0]);
} else {
return ((value[0] << 24) | ((value[1] << 16) & 0x00ff0000) |
((value[2] << 8) & 0x0000ff00) | value[0]);
}
}
float convertBigEndianFloatToPlatform(const float value)
{
float result = 0.0f;
byte *floatToConvert = (byte *)&value;
byte *floatResult = (byte *)&result;
floatResult[0] = floatToConvert[3];
floatResult[1] = floatToConvert[2];
floatResult[2] = floatToConvert[1];
floatResult[3] = floatToConvert[0];
return result;
}
|
