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c#pngjpeg

Converting a byte array to PNG/JPG

I am currently working on an application that requires high-performance conversion of an unpadded byte array to either a PNG or JPEG. The image format doesn't matter, just as long as it's fast.

I have tried the .NET libraries and the performance is very bad. Can anyone recommend a good freeware library for this?

EDIT: the byte[] is an 8bit grayscale bitmap

Solution

  • You should be able to do something like this:

    using System.Drawing.Imaging;
using System.Drawing;
using System.IO;

byte[] bitmap = GetYourImage();

using(Image image = Image.FromStream(new MemoryStream(bitmap)))
{
    image.Save("output.jpg", ImageFormat.Jpeg);  // Or Png
}

    Look here for more info.

    Hopefully this helps.