protected override void ImprintPNG(byte[] data)
{
uint[] crcTable = null;
uint crc = PNG.CRC32(PNG_IDAT_HEADER, 0, PNG_IDAT_HEADER.Length, 0, ref crcTable);
crc = PNG.CRC32(data, 0, data.Length, crc, ref crcTable);
byte[] crcb = BitConverter.GetBytes(crc);
int IEND = 0;
for (int i = 0; i < image.Chunks.Count; i++)
{
if (image.Chunks[i].Name == "IEND")
{
IEND = i;
break;
}
}
image.Chunks.Insert(IEND, new PNGChunk()
{
Name = "IDAT", Standard = true, Critical = true, CRC = crc, CRCBytes = new byte[4] {
crcb[3], crcb[2], crcb[1], crcb[0]
}, ValidCRC = true, Data = data
});
}
protected override void ImprintPNG(byte[] data)
{
uint[] crcTable = null;
uint crc = PNG.CRC32(PNG_TEXT_HEADER, 0, PNG_TEXT_HEADER.Length, 0, ref crcTable);
crc = PNG.CRC32(data, 0, data.Length, crc, ref crcTable);
byte[] crcb = BitConverter.GetBytes(crc);
image.Chunks.Insert(1, new PNGChunk()
{
Name = "tEXt", Standard = false, Critical = false, CRC = crc, CRCBytes = new byte[4] {
crcb[3], crcb[2], crcb[1], crcb[0]
}, ValidCRC = true, Data = data
});
}