private Image FromJpeg(Blp1MipMap mipmap)
{
byte[] result = new byte[BLP1_JPG_HEADER_SIZE + mipmap.Data.Length];
Buffer.BlockCopy(_jpgHeader, 0, result, 0, _jpgHeader.Length);
Buffer.BlockCopy(mipmap.Data, 0, result, BLP1_JPG_HEADER_SIZE, mipmap.Data.Length);
Image img;
using (MemoryStream ms = new MemoryStream(result, false))
{
img = Image.FromStream(ms, false, false);
}
return(img);
}
private Image FromPalette(Blp1MipMap mipmap)
{
Bitmap bmp = new Bitmap(mipmap.Size.Width, mipmap.Size.Height, PixelFormat.Format32bppArgb);
byte[] mipmapData = mipmap.Data;
int[] result = new int[mipmap.Size.Width * mipmap.Size.Height];
for (int i = 0; i < result.Length; i++)
{
Color paletteEntry = _palette[mipmapData[i]];
result[i] = paletteEntry.ToArgb();
}
BitmapData bmpData = bmp.LockBits(new Rectangle(Point.Empty, mipmap.Size), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
Marshal.Copy(result, 0, bmpData.Scan0, result.Length);
bmp.UnlockBits(bmpData);
return(bmp);
}
public override System.Drawing.Image GetMipmapImage(int mipmapIndex)
{
if (mipmapIndex < 0 || mipmapIndex >= _mipmaps.Count)
{
throw new ArgumentOutOfRangeException("mipmapIndex", mipmapIndex, "Index must be non-negative and less than the number of mipmaps in this BLP file.");
}
Blp1MipMap mipmap = _mipmaps[mipmapIndex];
Image result = null;
if (_compressionType == Blp1ImageType.Palette)
{
result = FromPalette(mipmap);
}
else
{
result = FromJpeg(mipmap);
}
return(result);
}
private void ParseInternal(Stream s)
{
using (BinaryReader br = new BinaryReader(s))
{
Blp1ImageType compressionType = (Blp1ImageType)br.ReadInt32();
int mipmapCount = br.ReadInt32();
if (!Enum.IsDefined(typeof(Blp1ImageType), compressionType))
{
throw new InvalidDataException("The file specified an unknown type of BLP1 compression.");
}
if (mipmapCount < 0)
{
throw new InvalidDataException("The file specified a negative number of mipmaps, which is invalid.");
}
_compressionType = compressionType;
int sizeX = br.ReadInt32();
int sizeY = br.ReadInt32();
Size fullImageSize = new Size(sizeX, sizeY);
_mainSize = fullImageSize;
br.ReadInt64(); // skip 'u2';
int[] offsets = new int[MAX_BLP1_MIPMAP_COUNT];
int[] sizes = new int[MAX_BLP1_MIPMAP_COUNT];
for (int i = 0; i < MAX_BLP1_MIPMAP_COUNT; i++)
{
offsets[i] = br.ReadInt32();
}
for (int i = 0; i < MAX_BLP1_MIPMAP_COUNT; i++)
{
sizes[i] = br.ReadInt32();
}
if (compressionType == Blp1ImageType.Palette)
{
ParsePalette(br);
}
else
{
ParseJpgHeader(s, br);
}
for (int i = 0; i < MAX_BLP1_MIPMAP_COUNT; i++)
{
int currentOffset = offsets[i];
int currentSize = sizes[i];
if (currentOffset == 0 || currentSize == 0)
{
break;
}
Size mipmapSize = GetSize(fullImageSize, i);
byte[] data = new byte[currentSize];
s.Seek(currentOffset, SeekOrigin.Begin);
br.Read(data, 0, currentSize);
Blp1MipMap mipmap = new Blp1MipMap(mipmapSize, i, data);
_mipmaps.Add(mipmap);
}
}
}
private void ParseInternal(Stream s)
{
using (BinaryReader br = new BinaryReader(s))
{
Blp1ImageType compressionType = (Blp1ImageType)br.ReadInt32();
int mipmapCount = br.ReadInt32();
if (!Enum.IsDefined(typeof(Blp1ImageType), compressionType))
throw new InvalidDataException("The file specified an unknown type of BLP1 compression.");
if (mipmapCount < 0)
throw new InvalidDataException("The file specified a negative number of mipmaps, which is invalid.");
_compressionType = compressionType;
int sizeX = br.ReadInt32();
int sizeY = br.ReadInt32();
Size fullImageSize = new Size(sizeX, sizeY);
_mainSize = fullImageSize;
br.ReadInt64(); // skip 'u2';
int[] offsets = new int[MAX_BLP1_MIPMAP_COUNT];
int[] sizes = new int[MAX_BLP1_MIPMAP_COUNT];
for (int i = 0; i < MAX_BLP1_MIPMAP_COUNT; i++)
{
offsets[i] = br.ReadInt32();
}
for (int i = 0; i < MAX_BLP1_MIPMAP_COUNT; i++)
{
sizes[i] = br.ReadInt32();
}
if (compressionType == Blp1ImageType.Palette)
{
ParsePalette(br);
}
else
{
ParseJpgHeader(s, br);
}
for (int i = 0; i < MAX_BLP1_MIPMAP_COUNT; i++)
{
int currentOffset = offsets[i];
int currentSize = sizes[i];
if (currentOffset == 0 || currentSize == 0)
break;
Size mipmapSize = GetSize(fullImageSize, i);
byte[] data = new byte[currentSize];
s.Seek(currentOffset, SeekOrigin.Begin);
br.Read(data, 0, currentSize);
Blp1MipMap mipmap = new Blp1MipMap(mipmapSize, i, data);
_mipmaps.Add(mipmap);
}
}
}
private Image FromPalette(Blp1MipMap mipmap)
{
Bitmap bmp = new Bitmap(mipmap.Size.Width, mipmap.Size.Height, PixelFormat.Format32bppArgb);
byte[] mipmapData = mipmap.Data;
int[] result = new int[mipmap.Size.Width * mipmap.Size.Height];
for (int i = 0; i < result.Length; i++)
{
Color paletteEntry = _palette[mipmapData[i]];
result[i] = paletteEntry.ToArgb();
}
BitmapData bmpData = bmp.LockBits(new Rectangle(Point.Empty, mipmap.Size), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
Marshal.Copy(result, 0, bmpData.Scan0, result.Length);
bmp.UnlockBits(bmpData);
return bmp;
}
private Image FromJpeg(Blp1MipMap mipmap)
{
byte[] result = new byte[BLP1_JPG_HEADER_SIZE + mipmap.Data.Length];
Buffer.BlockCopy(_jpgHeader, 0, result, 0, _jpgHeader.Length);
Buffer.BlockCopy(mipmap.Data, 0, result, BLP1_JPG_HEADER_SIZE, mipmap.Data.Length);
Image img;
using (MemoryStream ms = new MemoryStream(result, false))
{
img = Image.FromStream(ms, false, false);
}
return img;
}
