public static unsafe void SaveNative(this Archive arc, string path)
{
if (!CheatBox.ArchiveBegin(path))
{
throw new IOException("Can't create archive with the specified path: " + path);
}
foreach (var k in arc.Keys)
{
var mem = Marshal.AllocHGlobal(arc[k].Length);
Marshal.Copy(arc[k], 0, mem, arc[k].Length);
var result = CheatBox.AddFileToArchive((void *)mem, arc[k].Length, k);
Marshal.FreeHGlobal(mem);
if (!result)
{
throw new IOException("File addition failed");
}
}
if (!CheatBox.ArchiveEnd())
{
throw new IOException("Archive finalization error");
}
}
unsafe public byte[] ToInternal(byte[] bytes)
{
byte[] dst = null;
PngImageData imageData;
var src = Marshal.AllocHGlobal(bytes.Length);
Marshal.Copy(bytes, 0, src, bytes.Length);
var success = CheatBox.ReadPng(&imageData, (void *)src, bytes.Length);
if (success)
{
var pixels = new byte[imageData.Width * imageData.Height];
Marshal.Copy((IntPtr)imageData.Pixels, pixels, 0, pixels.Length);
var palette = new List <Color>();
var paletteBytes = new byte[imageData.PaletteLength];
Marshal.Copy((IntPtr)imageData.Palette, paletteBytes, 0, imageData.PaletteLength);
for (int i = 0; i < paletteBytes.Length; i += 3)
{
palette.Add(Color.FromArgb(
paletteBytes[i],
paletteBytes[i + 1],
paletteBytes[i + 2]
));
}
var img = new Img();
img.BitsPerPixel = 8;
img.Data = pixels;
img.Palette = palette;
img.Size = new Size(imageData.Width, imageData.Height);
using (var dstStream = new MemoryStream())
{
img.Save(dstStream);
dst = dstStream.ToArray();
}
}
CheatBox.ReadPngEnd(&imageData);
Marshal.FreeHGlobal(src);
if (!success)
{
throw new InvalidOperationException("Invalid PNG (must be palettized 8-bit format)");
}
return(dst);
}
unsafe public byte[] ToExternal(byte[] bytes)
{
using (var stream = new MemoryStream(bytes))
{
var img = new Img(stream);
if (img.Palette == null)
{
throw new InvalidOperationException("WTF? Do these non-palettized IMGs really exist?");
}
var pixels = Marshal.AllocHGlobal(img.Data.Length);
Marshal.Copy(img.Data, 0, pixels, img.Data.Length);
var palette = new List <byte>();
foreach (var col in img.Palette)
{
palette.Add(col.R);
palette.Add(col.G);
palette.Add(col.B);
}
var palettePtr = Marshal.AllocHGlobal(palette.Count);
Marshal.Copy(palette.ToArray(), 0, palettePtr, palette.Count);
// Assuming that our PNG will never exceed the size of an uncompressed source
int pngLen = img.Size.Width * img.Size.Height;
var png = Marshal.AllocHGlobal(pngLen);
var pngBytesLen = CheatBox.MakePng((byte *)png, pngLen, (byte *)pixels, img.Data.Length,
(void *)palettePtr, palette.Count, img.Size.Width, img.Size.Height);
if (pngBytesLen <= 0)
{
throw new InvalidOperationException("Conversion failure");
}
var pngBytes = new byte[pngBytesLen];
Marshal.Copy(png, pngBytes, 0, pngBytesLen);
Marshal.FreeHGlobal(pixels);
Marshal.FreeHGlobal(palettePtr);
Marshal.FreeHGlobal(png);
return(pngBytes);
}
}
