public unsafe ikaSprite(System.IO.TextReader sourceStream)
{
DataNode document = DataNode.ReadDocument(sourceStream);
DataNode rootNode = document.GetChild("ika-sprite");
string version = rootNode.GetChild("version").GetString();
DataNode infoNode = rootNode.GetChild("information");
title = infoNode.GetChild("title").GetString();
DataNode metaNode = infoNode.GetChild("meta");
foreach (DataNode n in metaNode.Children)
{
DataNode node = (DataNode)n.Children[0];
Metadata.Add(node.Name, node.GetString());
}
DataNode framesNode = rootNode.GetChild("frames");
int frameCount = Convert.ToInt32(framesNode.GetChild("count").GetString());
DataNode dimNode = framesNode.GetChild("dimensions");
Size size = new Size(
Convert.ToInt32(dimNode.GetChild("width").GetString()),
Convert.ToInt32(dimNode.GetChild("height").GetString())
);
DataNode hsNode = framesNode.GetChild("hotspot");
HotSpot = new Rectangle(
Convert.ToInt32(hsNode.GetChild("x").GetString()),
Convert.ToInt32(hsNode.GetChild("y").GetString()),
Convert.ToInt32(hsNode.GetChild("width").GetString()),
Convert.ToInt32(hsNode.GetChild("height").GetString())
);
DataNode animNode = rootNode.GetChild("scripts");
foreach (DataNode child in animNode.GetChildren("script"))
{
string name = child.GetChild("label").GetString();
string script = child.GetString();
Scripts.Add(name, script);
}
// Read pixel data
DataNode dataNode = framesNode.GetChild("data");
string dataFormat = dataNode.GetChild("format").GetString();
if (dataFormat != "zlib")
{
throw new Exception(string.Format("Invalid data format \"{0}\". Only \"zlib\" compression is supported.", dataFormat));
}
string data64 = dataNode.GetString();
byte[] cdata = Convert.FromBase64String(data64);
// shorthand
int width = size.Width;
int height = size.Height;
byte[] pixels = new byte[width * height * frameCount * 4];
using (MemoryStream compressed = new MemoryStream(cdata))
using (InflaterInputStream iis = new InflaterInputStream(compressed)) {
/**
* This is silly.
* InflaterInputStream doesn't actually read until it's got what you asked for.
* It seems to just stop when it feels like a good idea, then returns the number
* of bytes read.
*
* What the hell.
*/
int byteCount = 0;
while (byteCount < pixels.Length)
{
byteCount += iis.Read(pixels, byteCount, pixels.Length - byteCount);
}
}
frames = new ImageArray(width, height);
fixed(byte *p = &pixels[0])
{
byte *ptr = p;
for (int i = 0; i < frameCount; i++)
{
Bitmap bmp = new Bitmap(width, height, PixelFormat.Format32bppArgb);
BitmapData bd = bmp.LockBits(
new Rectangle(0, 0, width, height),
ImageLockMode.WriteOnly,
PixelFormat.Format32bppArgb
);
byte *dest = (byte *)bd.Scan0;
byte *src = ptr;
for (int k = 0; k < width * height; k++)
{
// swap red and blue
dest[0] = src[2];
dest[1] = src[1];
dest[2] = src[0];
dest[3] = src[3];
dest += 4;
src += 4;
}
bmp.UnlockBits(bd);
frames.Add(bmp);
ptr += width * height * 4;
}
}
}
public ikaSprite(int width, int height)
{
HotSpot = Rectangle.FromLTRB(0, 0, 0, 0);
frames = new ImageArray(width, height);
}
