public void ExploreFile(BinaryReader Pic, Queue <SignInfo> existingSigns)
{
byte[] buff = new byte[4];
string hexBuff = null;
string hexSign = null;
string sign_name = null;
int iterator = 0;
do
{
buff[0] = buff[1];
buff[1] = buff[2];
buff[2] = buff[3];
buff[3] = Pic.ReadByte();
hexBuff = BitConverter.ToString(buff);
for (int i = 0; i < 21; i++)
{
if (hexBuff == signs[i, 1])
{
if (hexSign == null)
{
hexSign = hexBuff;
sign_name = signs[i, 0];
}
else
{
SignInfo sign = new SignInfo();
sign.Sign = sign_name;
sign.hexSign = hexSign;
sign.byteLength = iterator - 12;
existingSigns.Enqueue(sign);
hexSign = hexBuff;
sign_name = signs[i, 0];
}
iterator = 0;
}
}
iterator++;
} while (!(hexBuff == IEND_sign));
}
public static void Main(string[] args)
{
PNG_signs signs = new PNG_signs();
IHDR ihdr = new IHDR();
Queue <SignInfo> existingSigns = new Queue <SignInfo>();
string fileName = "data\\Screen_color_test_Amiga_4colors.png";
string fileDir = Path.GetDirectoryName(Path.GetDirectoryName(Path.GetDirectoryName(System.IO.Directory.GetCurrentDirectory())));
string filePath = Path.Combine(fileDir, fileName);
int chunk;
BinaryReader test = new BinaryReader(File.OpenRead(filePath));
if (!(signs.IsPNG(test)))
{
Console.WriteLine("Obraz nie PNG");
}
signs.ExploreFile(test, existingSigns);
/*while(existingSigns.Count != 0)
* {
* existingSigns.Dequeue().Display();
* }*/
//DO USUNIECIA - TESTOWE WCZYTANIE
/*
* string hex = ""''
* if (File.Exists(filePath))
* {
* byte[] bytes = File.ReadAllBytes(filePath);
* hex = BitConverter.ToString(bytes);
* }
*
* Console.WriteLine(hex);
* Console.WriteLine("Wypisano");
* Console.WriteLine(filePath);
*/
BinaryReader Pic = new BinaryReader(File.OpenRead(filePath));
if (signs.IsPNG(Pic))
{
Console.WriteLine("Obraz PNG");
}
while (existingSigns.Count != 0)
{
SignInfo s = existingSigns.Dequeue();
chunk = signs.FindSign(Pic, s.hexSign);
if (chunk == 1)
{
Console.WriteLine("\n[{0}], byteLength: {1}\n", s.Sign, s.byteLength);
if (s.Sign == "IHDR")
{
ihdr.ReadData(Pic);
ihdr.DisplayData();
}
else if (s.Sign == "PLTE")
{
Console.WriteLine(" - colorQuantity: {0}", s.byteLength / 3);
}
else if (s.Sign == "gAMA")
{
int gama = Int32.Parse(BitConverter.ToString(Pic.ReadBytes(4)).Replace("-", ""), System.Globalization.NumberStyles.HexNumber);
Console.WriteLine(" - gama: {0}", (double)gama / 100000);
}
else if (s.Sign == "cHRM")
{
cHRM chrm = new cHRM();
chrm.ReadData(Pic);
chrm.DisplayData();
}
else
{
Console.WriteLine(BitConverter.ToString(Pic.ReadBytes(s.byteLength)));
}
}
}
Console.WriteLine("\n[IEND]\n");
}
