//GIF files use LSB-First packing order so I have to account for this.
private void DecryptImageData(string stream)
{
string builder3 = "";
string builder = "";
string number = "";
string binary = GifHelper.HexToBinary(stream);
string binary2 = "";
int pixel = 0;
for (int i = 0; i < binary.Length - LZWCompressionSize; i += LZWCompressionSize)
{
number = Convert.ToInt32(binary.Substring(i, LZWCompressionSize), 2).ToString();
binary2 += binary.Substring(i, 8) + ", ";
builder += number + ", ";
pixel++;
}
for (int i = 0; i < stream.Length - 2; i += 2)
{
builder3 += stream.Substring(i, 2) + " ";
}
Debug.Log("EST PIXELS: " + pixel);
Debug.Log("IMAGE DATA SUBBLOCK 1 DATA: " + builder3);
Debug.Log("IMAGE BLOCK BINARY: " + binary2);
Debug.Log("IMAGE DATA DECRYPTED: " + builder);
}
private void packetFieldDecrypt(string input)
{
string packetField = GifHelper.HexToBinary(input);
LocalColorTableFlag = packetField.Substring(0, 1) == "1";
InterlaceFlag = packetField.Substring(1, 1) == "1";
SortFlag = packetField.Substring(2, 1) =="1";
ResevedForFutureUse = packetField.Substring(3, 2);
LocalColorTableSize = GifHelper.HexToDecimal(packetField.Substring(5, 3));
}
private void PacketField(string packetField)
{
packetField = GifHelper.HexToBinary(packetField);
//Debug.LogWarning("GCE PACKET FIELD BINARY: " + packetField);
FutureUse = GifHelper.HexToDecimal(packetField.Substring(0, 3));
DisposalMethod = GifHelper.HexToDecimal(packetField.Substring(3, 3));
UserInput = packetField.Substring(6, 1) == "1";
HasTransparency = packetField.Substring(7, 1) == "1";
}
private void DecodePacketField(string packetField)
{
//Debug.LogError("LOGICAL DESCRIPTOR PACKETFIELD: " + packetField);
string binary = GifHelper.HexToBinary(packetField);
HasGlobalColorTable = binary.Substring(0, 1) == "1";
IsGlobalColorTableSorted = binary.Substring(4, 1) == "1";
long resolution = Convert.ToInt64(binary.Substring(1, 3), 2);
ColorResolution = (int)resolution + 1;
long size = Convert.ToInt64(binary.Substring(5, 3), 2);
GlobalColorTableSize = (int)(Mathf.Pow(2, size + 1) * 3);
//Debug.LogError("Global Color Table Size: " + GlobalColorTableSize);
}
public void Set(string stream)
{
Debug.Log("GRAPHICS CONTROL EXTENSION: " + stream);
ErrorCheck(stream);
string size = stream.Substring(4, 2);
size = GifHelper.HexToBinary(size);
BlockSize = (int)Convert.ToInt64(size, 2);
string packetField = stream.Substring(6, 2);
PacketField(packetField);
string delay = stream.Substring(8, 4);
Delay = GifHelper.HexToDecimal(delay);
string transparentIndex = stream.Substring(12, 2);
TransparencyIndex = GifHelper.HexToDecimal(transparentIndex);
//Debug.LogWarning("GCE TRANSPARENCY INDEX: " + TransparencyIndex);
}
