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
|
using System;
using System.IO;
namespace Org.BouncyCastle.Bcpg.Attr
{
/// <remarks>Basic type for a image attribute packet.</remarks>
public class ImageAttrib
: UserAttributeSubpacket
{
public enum Format : byte
{
Jpeg = 1
}
private static readonly byte[] Zeroes = new byte[12];
private int hdrLength;
private int _version;
private int _encoding;
private byte[] imageData;
public ImageAttrib(byte[] data)
: this(false, data)
{
}
public ImageAttrib(bool forceLongLength, byte[] data)
: base(UserAttributeSubpacketTag.ImageAttribute, forceLongLength, data)
{
hdrLength = ((data[1] & 0xff) << 8) | (data[0] & 0xff);
_version = data[2] & 0xff;
_encoding = data[3] & 0xff;
imageData = new byte[data.Length - hdrLength];
Array.Copy(data, hdrLength, imageData, 0, imageData.Length);
}
public ImageAttrib(
Format imageType,
byte[] imageData)
: this(ToByteArray(imageType, imageData))
{
}
private static byte[] ToByteArray(
Format imageType,
byte[] imageData)
{
MemoryStream bOut = new MemoryStream();
bOut.WriteByte(0x10); bOut.WriteByte(0x00); bOut.WriteByte(0x01);
bOut.WriteByte((byte) imageType);
bOut.Write(Zeroes, 0, Zeroes.Length);
bOut.Write(imageData, 0, imageData.Length);
return bOut.ToArray();
}
public virtual int Version
{
get { return _version; }
}
public virtual int Encoding
{
get { return _encoding; }
}
public virtual byte[] GetImageData()
{
return imageData;
}
}
}
|
