public virtual Bitmap GetImage()
{
var data = SwfZip.DecompressZlib(ZlibBitmapData);
var bmp = new Bitmap(BitmapWidth, BitmapHeight);
var lineSize = BitmapWidth;
for (var y = 0; y < bmp.Height; y++)
{
for (var x = 0; x < bmp.Width; x++)
{
var ind = (y * lineSize + x) * 4;
var alpha = data[ind];
if (alpha <= 0)
{
alpha = 1;
}
var red = data[ind + 1] * 255 / alpha;
var green = data[ind + 2] * 255 / alpha;
var blue = data[ind + 3] * 255 / alpha;
var clr = Color.FromArgb(alpha, red, green, blue);
bmp.SetPixel(x, y, clr);
}
}
return(bmp);
}
protected static SwfStreamReader GetSwfStreamReader(SwfFileInfo info, Stream stream)
{
if (info.Format == SwfFormat.Unknown)
{
throw new NotSupportedException("Illegal file format");
}
if (info.Format == SwfFormat.FWS)
{
return(new SwfStreamReader(stream));
}
var mem = new MemoryStream();
SwfZip.Decompress(stream, mem, info.Format);
return(new SwfStreamReader(mem));
}
private static Stream DecompressIfNeeded(SwfFileInfo info, Stream stream)
{
if (info.Format == SwfFormat.Unknown)
{
throw new NotSupportedException("Illegal file format");
}
if (info.Format == SwfFormat.FWS)
{
return(stream);
}
var mem = new MemoryStream();
SwfZip.Decompress(stream, mem, info.Format);
return(mem);
}
protected static Bitmap SetAlphas(Bitmap bmp, byte[] compressedAlpha)
{
var alpha = SwfZip.Decompress(compressedAlpha, SwfFormat.CWS);
var index = 0;
var res = new Bitmap(bmp.Width, bmp.Height, PixelFormat.Format32bppArgb);
for (var y = 0; y < bmp.Height; y++)
{
for (var x = 0; x < bmp.Width; x++)
{
var clr = bmp.GetPixel(x, y);
clr = Color.FromArgb(alpha[index], clr);
res.SetPixel(x, y, clr);
index++;
}
}
return(res);
}
public void SetImage(Bitmap bmp)
{
BitmapWidth = (ushort)bmp.Width;
BitmapHeight = (ushort)bmp.Height;
BitmapFormat = 5;
var lineSize = BitmapWidth;
var data = new byte[lineSize * BitmapHeight * 4];
for (var y = 0; y < bmp.Height; y++)
{
for (var x = 0; x < bmp.Width; x++)
{
var ind = (y * lineSize + x) * 4;
var clr = bmp.GetPixel(x, y);
data[ind] = clr.A;
data[ind + 1] = (byte)(clr.R * clr.A / 255);
data[ind + 2] = (byte)(clr.G * clr.A / 255);
data[ind + 3] = (byte)(clr.B * clr.A / 255);
}
}
ZlibBitmapData = SwfZip.CompressZlib(data);
}
