PngConverter.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using MyLibrary;
namespace MagnaEngine
{
    public static class PngConverter
    {

        public static void ConvertByteToPng(byte[] data)
        {
            var w = CalcWidth(data);
            var h = CalcHeight(data);
            var image = ByteArrayToImage(data);
            // ファイル名「tips.jpg」で保存
            image.Save(Utility.DesktopPath + "tips.png", System.Drawing.Imaging.ImageFormat.Png);
        }


        public static Image ByteArrayToImage(byte[] b)
        {
            ImageConverter imgconv = new ImageConverter();
            Image img = (Image)imgconv.ConvertFrom(b);
            return img;
        }

        private static int CalcWidth(byte[] _data)
        {
            int pos = 16;
            int width = 0;
            for (int i = 0; i < 4; i++)
            {
                width = width * 256 + _data[pos++];
            }
            return width;
        }

        private static int CalcHeight(byte[] _data)
        {
            int pos = 16;
            int height = 0;
            for (int i = 0; i < 4; i++)
            {
                height = height * 256 + _data[pos++];
            }
            return height;
        }

        
    }
}