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  1.         public void Test()
  2.         {
  3.             var nv12Binary = File.ReadAllBytes(@"C:\NV12.dat");
  4.             var height = 256; //BitmapInfoHeaderより
  5.             var width = 320;  //BitmapInfoHeaderより
  6.             var uvStartIndex = height * width; //UVの開始位置を取得
  7.             var rgbBuffer = new byte[height * width * 3];
  8.  
  9.             for (var h = 0; h < height; h++)
  10.             {
  11.                 for (var w = 0; w < width; w += 2)
  12.                 {
  13.                     var u = nv12Binary[uvStartIndex + w + 0];
  14.                     var v = nv12Binary[uvStartIndex + w + 1];
  15.  
  16.                     for (int cnt = 0; cnt < 2; cnt++)
  17.                     {
  18.                         var y = nv12Binary[h * width + h + cnt];
  19.  
  20.  
  21.                         //var r = ((298 * (y - 16) + 409 * (v - 128) + 128) >> 8);
  22.                         //var g = ((298 * (y - 16) - 100 * (u - 128) - 208 * (v - 128) + 128) >> 8);
  23.                         //var b = ((298 * (y - 16) + 516 * (u - 128) + 128) >> 8);
  24.                         var r = y + (1.370705 * (v - 128));
  25.                         var g = y - (0.698001 * (v - 128)) - (0.337633 * (u - 128));
  26.                         var b = y + (1.732446 * (u - 128));
  27.  
  28.                         rgbBuffer[(h * width + w + cnt) * 3 + 0] = ConvertByte(b);
  29.                         rgbBuffer[(h * width + w + cnt) * 3 + 1] = ConvertByte(g);
  30.                         rgbBuffer[(h * width + w + cnt) * 3 + 2] = ConvertByte(r);
  31.                     }
  32.                 }
  33.                 uvStartIndex += width * (h % 2);//UV位置を移動
  34.             }
  35.  
  36.             using (var img = new Bitmap(width, height, PixelFormat.Format24bppRgb))
  37.             {
  38.                 var bitmapData = img.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.WriteOnly, PixelFormat.Format24bppRgb);
  39.                 Marshal.Copy(rgbBuffer, 0, bitmapData.Scan0, rgbBuffer.Length);
  40.                 img.UnlockBits(bitmapData);
  41.                 img.Save(@"C:\Image.bmp",ImageFormat.Bmp);
  42.             }
  43.         }
  44.  
  45.         private static byte ConvertByte(double value)
  46.             => value > byte.MaxValue ? byte.MaxValue : (value < byte.MinValue ? byte.MinValue : (byte)value);
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cs(1,15): error CS1525: Unexpected symbol `void', expecting `class', `delegate', `enum', `interface', `partial', or `struct'
Compilation failed: 1 error(s), 0 warnings
stdout 
Standard output is empty
https://ideone.com/20PQG1
language:
C# (gmcs 5.20.1)
created:
8 years ago
visibility:
public

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