public override ChunkRaw CreateRawChunk()
{
if (key.Length == 0)
{
throw new PngjException("Text chunk key must be non empty");
}
MemoryStream ba = new MemoryStream();
ChunkHelper.WriteBytesToStream(ba, ChunkHelper.ToBytes(key));
ba.WriteByte(0); // separator
ba.WriteByte(compressed ? (byte)1 : (byte)0);
ba.WriteByte(0); // compression method (always 0)
ChunkHelper.WriteBytesToStream(ba, ChunkHelper.ToBytes(langTag));
ba.WriteByte(0); // separator
ChunkHelper.WriteBytesToStream(ba, ChunkHelper.ToBytesUTF8(translatedTag));
ba.WriteByte(0); // separator
byte[] textbytes = ChunkHelper.ToBytesUTF8(val);
if (compressed)
{
textbytes = ChunkHelper.compressBytes(textbytes, true);
}
ChunkHelper.WriteBytesToStream(ba, textbytes);
byte[] b = ba.ToArray();
ChunkRaw chunk = createEmptyChunk(b.Length, false);
chunk.Data = b;
return(chunk);
}