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MpoImage.cs
52 lines (44 loc) · 1.64 KB
/
MpoImage.cs
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using System.Collections.Generic;
using System.Drawing;
using System.IO;
namespace MpoViewer
{
public static class MpoImage
{
public static List<Image> GetMpoImages(string fileName)
{
var images = new List<Image>();
byte[] tempBytes = new byte[100];
using (var f = new FileStream(fileName, FileMode.Open, FileAccess.Read))
{
tempBytes = new byte[f.Length];
f.Read(tempBytes, 0, (int)f.Length);
}
List<int> imageOffsets = new List<int>();
int offset = 0, tempOffset = 0;
byte[] keyBytes = { 0xFF, 0xD8, 0xFF, 0xE1 };
byte[] keyBytes2 = { 0xFF, 0xD8, 0xFF, 0xE0 };
while (true)
{
tempOffset = Utils.SearchBytes(tempBytes, keyBytes, offset, tempBytes.Length);
if (tempOffset == -1)
tempOffset = Utils.SearchBytes(tempBytes, keyBytes2, offset, tempBytes.Length);
if (tempOffset == -1) break;
offset = tempOffset;
imageOffsets.Add(offset);
offset += 4;
}
for (int i = 0; i < imageOffsets.Count; i++)
{
int length;
if (i < (imageOffsets.Count - 1))
length = imageOffsets[i + 1] - imageOffsets[i];
else
length = tempBytes.Length - imageOffsets[i];
MemoryStream stream = new MemoryStream(tempBytes, imageOffsets[i], length);
images.Add(new Bitmap(stream));
}
return images;
}
}
}