Byte数组或矩阵位图 [英] Byte array or matrix to BitMap

问题描述

我目前有以下问题：我想转换来自文件具有以下配置的字节数组：

I am currently having the following problem: I want to convert a byte array that comes from a file with the following configuration:

Byte1: R color of pixel 0,0.
Byte2: G color of pixel 0,0.
Byte3: B color of pixel 0,0.
Byte4: R color of pixel 0,1.

...
ByteN: R color of pixel n,n.

所以，我想要做的是这些字节转换成位图，而不必因为时间太长设置像素的像素与 bitmap.setPixel 。

有什么建议？在此先感谢！

Any suggestions? Thanks in advance!

推荐答案

如果您有字节[] 像素，宽度和高度，那么你就可以使用的BitmapData 来的字节写入位图，因为你也知道的格式。这里有一个例子：

If you have the byte[] of the pixels, and the width and height, then you can use BitmapData to write the bytes to the bitmap since you also know the format. Here's an example:

//Your actual bytes
byte[] bytes = {255, 0, 0, 0, 0, 255};
var width = 2;
var height = 1;
//Make sure to clean up resources
var bitmap = new Bitmap(width, height);
var data = bitmap.LockBits(new Rectangle(Point.Empty, bitmap.Size), ImageLockMode.WriteOnly, PixelFormat.Format24bppRgb);
Marshal.Copy(bytes, 0, data.Scan0, bytes.Length);
bitmap.UnlockBits(data);

这是一个非常快的操作。

This is a very fast operation.

您将需要在你的C＃文件的顶部导入这三个名字空间，以最低的：

You will need to import these three namespaces at the top of your C# file, at minimum:

using System.Drawing;
using System.Drawing.Imaging;
using System.Runtime.InteropServices;

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