/// <summary>
/// When "Send" button is clicked, a new thread is run not to block the main thread.
/// "Send" button is disabled until the thread finished its job.
/// Input image is converted to vectors, which are sent through the channel with provided
/// error probability p. Image vectors are sent two ways - encoded and later decoded after receiving them
/// from the channel and not encoded.
/// </summary>
private void SendImageBtn_Click(object sender, EventArgs e)
{
panel.SendBtn.Enabled = false;
new Thread(() =>
{
var p = panel.P;
// Convert image to vectors and separate the header (it is not sent through the channel)
var bitmapToVector = new Vector(ConversionUtils.ConvertBitmapToIntArray(UploadedImage));
var bitmapHeader = bitmapToVector.Data.Take(54 * 8);
var bitmapVectorToSend = new Vector(bitmapToVector.Data.Skip(54 * 8).ToArray());
try
{
// Encode input image vectors
var encodedVector = Encoder.EncodeBinarySequence(bitmapVectorToSend, M, out int additionalBits);
// Send (not)encoded vectors through the channel
var receivedNotEncoded = Channel.SendBinaryMessage(bitmapVectorToSend, p, out _);
var receivedEncoded = Channel.SendBinaryMessage(encodedVector, p, out _);
// Decode received encoded vectors
var decoded = Decoder.DecodeBinarySequence(receivedEncoded, M);
DeconvertedNotEncoded = ConversionUtils.ConvertIntArrayToImage(bitmapHeader.Concat(receivedNotEncoded.Data).ToArray());
DeconvertedEncoded = ConversionUtils.ConvertIntArrayToImage(bitmapHeader.Concat(decoded.Data).ToArray(), additionalBits);
}
// Handling 'out of memory' failure
catch (OutOfMemoryException)
{
MessageBox.Show("System is out of memory!");
return;
}
// There can be cases where corrupted Bitmap is provided and cannot be reconverted to the image
catch
{
MessageBox.Show("Corrupted Bitmap has been provided.");
this.BeginInvoke((Action)(() =>
{
panel.SendBtn.Enabled = true;
return;
}));
}
this.BeginInvoke((Action)(() =>
{
notEncodedPicture.Image = DeconvertedNotEncoded;
encodedPicture.Image = DeconvertedEncoded;
panel.SendBtn.Enabled = true;
this.ChangeReceivedControlsVisibility(true);
}));
}).Start();
}
/// <summary>
/// When "Send" button is clicked, a new thread is run not to block the main thread.
/// "Send" button is disabled until the thread finished its job.
/// Input text is converted to vectors, which are sent through the channel with provided
/// error probability p. Text is sent two ways - encoded and later decoded after receiving it
/// from the channel and not encoded.
/// </summary>
private void SendBtn_Click(object sender, EventArgs e)
{
probabilityPanel.SendBtn.Enabled = false;
new Thread(() =>
{
// If no text is provided, cancel further processes
if (messageBox.Text.Length == 0)
{
BeginInvoke((Action)(() =>
{
encodedTextBox.Text = "";
notEncodedTextBox.Text = "";
probabilityPanel.SendBtn.Enabled = true;
return;
}));
}
var p = probabilityPanel.P;
var textToBinary = ConversionUtils.CovertStringToBinaryArray(messageBox.Text);
var inputTextVector = new Vector(textToBinary);
// Handling 'out of memory' failure
try
{
// Ecode input text vectors
var encodedTextVectors = Encoder.EncodeBinarySequence(inputTextVector, M, out int additionalBitCount);
// Sent (not)encoded text vectors through the channel
var receivedEncodedTextVector = Channel.SendBinaryMessage(encodedTextVectors, p, out _);
var receivedNotEncodedTextVector = Channel.SendBinaryMessage(inputTextVector, p, out _);
// Decoded received encoded text vector
var decodedText = Decoder.DecodeBinarySequence(receivedEncodedTextVector, M);
SentEncodedResult = ConversionUtils.ConvertBinaryArrayToString(decodedText.Data, additionalBitCount);
SentNotEncodedResult = ConversionUtils.ConvertBinaryArrayToString(receivedNotEncodedTextVector.Data, 0);
}
catch (OutOfMemoryException)
{
MessageBox.Show("System is out of memory!");
return;
}
BeginInvoke((Action)(() => {
encodedTextBox.Text = SentEncodedResult;
notEncodedTextBox.Text = SentNotEncodedResult;
probabilityPanel.SendBtn.Enabled = true;
}));
}).Start();
}
