private void decodeLSB(FileType fileType)
{
byte[] currentFileBytesToDecode = this.fileBytes;
if (fileType == FileType.BMP)
{
currentFileBytesToDecode = FileFormatHelpers.decodeDataFromFileBytesBmp(ref currentFileBytesToDecode);
}
else
{
currentFileBytesToDecode = FileFormatHelpers.decodeDataFromFileBytesJpg(ref currentFileBytesToDecode);
}
while (currentFileBytesToDecode != null)
{
FileType decodedFileBytesFileType = FileFormatHelpers.checkFileType(ref currentFileBytesToDecode);
switch (decodedFileBytesFileType)
{
case (FileType.BMP): {
DecodedFileWindow decodedFileWindow = new DecodedFileWindow();
decodedFileWindow.setFile(ref currentFileBytesToDecode);
decodedFileWindow.Show();
currentFileBytesToDecode = FileFormatHelpers.decodeDataFromFileBytesBmp(ref currentFileBytesToDecode);
} break;
case (FileType.JPEG): {
DecodedFileWindow decodedFileWindow = new DecodedFileWindow();
decodedFileWindow.setFile(ref currentFileBytesToDecode);
decodedFileWindow.Show();
currentFileBytesToDecode = FileFormatHelpers.decodeDataFromFileBytesJpg(ref currentFileBytesToDecode);
} break;
case (FileType.NONE): {
StringBuilder message = new StringBuilder();
byte[] currentCharBytesUnicode = System.Text.Encoding.Convert(Encoding.ASCII, Encoding.Unicode, currentFileBytesToDecode);
char[] unicodeChars = new char[Encoding.Unicode.GetCharCount(currentCharBytesUnicode, 0, currentCharBytesUnicode.Length)];
Encoding.Unicode.GetChars(currentCharBytesUnicode, 0, currentCharBytesUnicode.Length, unicodeChars, 0);
string unicodeString = new string(unicodeChars);
currentFileBytesToDecode = null;
DecodedMessageWindow decodedMessageWindow = new DecodedMessageWindow();
decodedMessageWindow.setMessage(unicodeString);
decodedMessageWindow.Show();
} break;
}
}
}
private bool encodeLSBBMP()
{
bool result = false;
BmpFileHeaders bmpFileHeaders = FileFormatHelpers.readBmpFileHeaders(this.fileBytes);
LSBEncodeDialog lSBEncodeDialog = new LSBEncodeDialog();
if (lSBEncodeDialog.ShowDialog() == true)
{
EncodeQueryResult encodeQueryResult = lSBEncodeDialog.getResult();
byte[] sourceByteArray = FileFormatHelpers.convertLayerToByteArray(encodeQueryResult.layers[encodeQueryResult.layers.Count - 1]);
for (int index = (encodeQueryResult.layers.Count - 1); index >= 0; index--)
{
if (index == 0)
{
FileFormatHelpers.encodeDataIntoFileBytesBmp(
ref bmpFileHeaders,
ref sourceByteArray,
ref this.fileBytes
);
}
else
{
LayerInformation layerTargetInformation = encodeQueryResult.layers[index - 1];
sourceByteArray = FileFormatHelpers.encodeDataIntoLayersFileBytes(
ref sourceByteArray,
layerTargetInformation
);
}
encodeQueryResult.layers.RemoveAt(index);
}
result = true;
}
return(result);
}
