internal static byte[] GetHeader(byte[] rawData, out SwfHeader header)
{
int offset = 0;
header = new SwfHeader();
if (rawData.Length - offset < 8)
{
throw new ArgumentException("Data Length is less than 8 bytes");
}
header.Compression = (SwfCompression)rawData[offset + 0];
if (!(Enum.GetValues(typeof(SwfCompression)).Cast <SwfCompression>().Contains(header.Compression) &&
rawData[offset + 1] == 0x57 && rawData[offset + 2] == 0x53))
{
throw new ArgumentException("This Data is not SWF");
}
header.Version = rawData[offset + 3];
header.FileLength = (int)TagUtilities.PickBytes(rawData, offset + 4, 4);
rawData = header.Decompress(rawData);
offset += 8;
Rectangle rect;
offset += Rectangle.GetRectangle(rawData, offset, out rect);
header.FrameSize = rect;
header.FrameRate = TagUtilities.PickBytes16(rawData, offset);
offset += 2;
header.FrameCount = TagUtilities.PickBytes16(rawData, offset);
offset += 2;
header.HeaderLength = offset;
return(rawData);
}
