private static Bitmap ReadBLP(String filePath)
{
FileStream fs = File.OpenRead(filePath);
BlpFile blpFile = new BlpFile(fs);
int width;
int height;
// The library does not determine what's BLP1 and BLP2 properly, so we manually set bool bgra in GetPixels depending on the checkbox.
byte[] bytes = blpFile.GetPixels(0, out width, out height, blpFile._isBLP2); // 0 indicates first mipmap layer. width and height are assigned width and height in GetPixels().
var actualImage = blpFile.GetBitmapSource(0);
int bytesPerPixel = (actualImage.Format.BitsPerPixel + 7) / 8;
int stride = bytesPerPixel * actualImage.PixelWidth;
// blp read and convert
Bitmap image = new Bitmap(width, height);
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
var offset = (y * stride) + (x * bytesPerPixel);
byte red;
byte green;
byte blue;
byte alpha = 0;
red = bytes[offset + 0];
green = bytes[offset + 1];
blue = bytes[offset + 2];
alpha = bytes[offset + 3];
image.SetPixel(x, y, Color.FromArgb(alpha, blue, green, red)); // assign color to pixel
}
}
blpFile.Dispose();
return(image);
}
public void TestGetBlpBitmapSource(string inputImagePath, string expectedImagePath, int mipMapLevel)
{
using (var fileStream = File.OpenRead(inputImagePath))
{
var expectedImage = new Bitmap(expectedImagePath);
var blpFile = new BlpFile(fileStream);
var actualImage = blpFile.GetBitmapSource(mipMapLevel);
Assert.AreEqual(expectedImage.Width, actualImage.PixelWidth);
Assert.AreEqual(expectedImage.Height, actualImage.PixelHeight);
var bytesPerPixel = (actualImage.Format.BitsPerPixel + 7) / 8;
var stride = bytesPerPixel * actualImage.PixelWidth;
var bytes = new byte[stride * actualImage.PixelHeight];
actualImage.CopyPixels(bytes, stride, 0);
for (var y = 0; y < expectedImage.Height; y++)
{
for (var x = 0; x < expectedImage.Width; x++)
{
var offset = (y * stride) + (x * bytesPerPixel);
// Assumes actualImage.Format is either PixelFormats.Bgr32 or PixelFormats.Bgra32
Assert.AreEqual(expectedImage.GetPixel(x, y).B, bytes[offset + 0]);
Assert.AreEqual(expectedImage.GetPixel(x, y).G, bytes[offset + 1]);
Assert.AreEqual(expectedImage.GetPixel(x, y).R, bytes[offset + 2]);
if (bytesPerPixel > 3)
{
Assert.AreEqual(expectedImage.GetPixel(x, y).A, bytes[offset + 3]);
}
}
}
expectedImage.Dispose();
blpFile.Dispose();
}
}
