/// <summary>
/// Called when background worker completes the task
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void backgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
BackgroundWorkerArgs args = e.Result as BackgroundWorkerArgs;
///If an error occured during process
if (e.Error != null)
{
string caption = "HideIt";
if (args != null)
{
caption = ((args.Action == ActionType.Hide) ? "Hide Message" : "Extract Message");
}
UIMessage.Error(e.Error.Message, caption);
}
if (args != null)
{
try
{
args.Message.Dispose();
this._processor.Dispose();
this._processor = null;
}
catch (Exception)
{
}
}
}
/// <summary>
/// When the form is closing (exiting)
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void HideIt_FormClosing(object sender, FormClosingEventArgs e)
{
if (this._processor != null)
{
try
{
this._processor.Dispose();
this._processor = null;
}
catch (Exception)
{
}
}
if (this._liveProcessor != null)
{
this._liveProcessor.Dispose();
this._liveProcessor = null;
}
if (this._receiver != null)
{
try
{
this._receiver.Dispose();
}
catch (Exception)
{
}
}
if (this.pic_coverPreview.Image != null)
{
///Dispose off the image displayed in preview box
this.pic_coverPreview.Image.Dispose();
}
if (this.pic_stegoPreview.Image != null)
{
///Dipose off the stego object image displayed in preview box
this.pic_stegoPreview.Image.Dispose();
}
if (this._selectDevice != null)
{
if (this._selectDevice.CaptureDevice != null)
{
try
{
this._selectDevice.CaptureDevice.Dispose();
}
catch (Exception)
{
}
this._selectDevice.CaptureDevice = null;
}
this._selectDevice = null;
}
}
/// <summary>
/// Select a bitmap file as stago file
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btn_browseStego_Click(object sender, EventArgs e)
{
using (Status status = new Status(null, this.lbl_status, "Open stego file"))
{
try
{
string path = AppUtil.SelectFile("Open stego file", "Bitmap (*.bmp)|*.bmp|AVI (*.avi)|*.avi|WAV (*.wav)|*.wav", "bmp").ToLower();
if (!string.IsNullOrEmpty(path))
{
this.txt_stegoObject.Text = path;
///Dispose the previous processor
if (this._processor != null)
{
this._processor.Dispose();
}
this._processor = StegoProcessorBase.GetProcessor(path, false);
this._processor.LoadHost(path, true);
if (this._processor.MType == HostMediaType.Bitmap)
{
///Let show the pic in preview box. Open the image by giving the path
///The size mode of this image is set to zoom. So if the image is bigger then the
///frame it will automatically adjust it to fit the frame. Same happens if it is smaller
///then the frame
this.pic_stegoPreview.Image = new System.Drawing.Bitmap(this.txt_stegoObject.Text);
}
else if (this._processor.MType == HostMediaType.Wave)
{
this.pic_stegoPreview.Image = global::HideIt.Properties.Resources.wav;
}
else
{
///setup the Avi icon image
this.pic_stegoPreview.Image = global::HideIt.Properties.Resources.avi;
}
}
}
catch (Exception exc)
{
UIMessage.Error(exc.Message, TITLE);
if (this._processor != null)
{
try
{
this._processor.Dispose();
}
catch (Exception)
{
}
this._processor = null;
}
}
}
}
/// <summary>
/// Select a bitmap file as cover object
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btn_browseCover_Click(object sender, EventArgs e)
{
using (Status status = new Status(null, this.lbl_status, "Open cover file"))
{
try
{
string path = AppUtil.SelectFile("Open cover file", "Bitmap (*.bmp)|*.bmp|AVI (*.avi)|*.avi|WAV (*.wav)|*.wav", "bmp").ToLower();
if (!string.IsNullOrEmpty(path))
{
this.txt_coverFileName.Text = path;
if (this._processor != null)
{
this._processor.Dispose();
}
LoadProcessor(path);
}
}
catch (Exception exc)
{
UIMessage.Error(exc.Message, TITLE);
if (this._processor != null)
{
try
{
this._processor.Dispose();
}
catch (Exception)
{
}
this._processor = null;
}
}
}
}
/// <summary>
/// Clear all the data that in form
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void newToolStripMenuItem_Click(object sender, EventArgs e)
{
this.backgroundWorker.Dispose();
if (this._processor != null)
{
try
{
this._processor.Dispose();
}
catch (Exception)
{
}
this._processor = null;
}
if (this._liveProcessor != null)
{
try
{
this._liveProcessor.Dispose();
}
catch (Exception)
{
}
this._liveProcessor = null;
}
this._hidingCapacity = 0;
///Clear summary
///
foreach (Control control in this.gb_summary.Controls)
{
control.Dispose();
}
this.gb_summary.Controls.Clear();
this.lbl_status.Text = Status.DEFUALT_STATUS;
///Clear up all the text box fields
this.txt_coverFileName.Text = string.Empty;
this.txt_key.Text = string.Empty;
this.txt_stegoKey.Text = string.Empty;
this.txt_saveStego.Text = string.Empty;
this.txt_stegoObject.Text = string.Empty;
this.rtxt_message.Text = string.Empty;
this.rtxt_hiddenMsg.Text = string.Empty;
this.txt_selected.Text = string.Empty;
this.rtxt_liveMessage.Text = string.Empty;
this.txt_keyLive.Text = string.Empty;
this.txt_saveCapturedPath.Text = string.Empty;
if (this.pic_coverPreview.Image != null)
{
this.pic_coverPreview.Image.Dispose();
this.pic_coverPreview.Image = null;
}
if (this.pic_stegoPreview.Image != null)
{
this.pic_stegoPreview.Image.Dispose();
this.pic_stegoPreview.Image = null;
}
this.progress.Value = 0;
}
private void LoadProcessor(string path)
{
this._processor = StegoProcessorBase.GetProcessor(path, false);
if (this._processor == null)
{
return;
}
this._processor.LoadHost(path, true);
if (this._processor.MType != HostMediaType.Video)
{
this.cb_watermark.Enabled = false;
}
if (this._processor.MType == HostMediaType.Bitmap)
{
///Show the bitmap summary control
BitmapSummary summaryControl = new BitmapSummary();
this._currentControl = summaryControl;
this.ShowNewSummaryControl(summaryControl);
///Display cover file size
summaryControl.HostSize = this.ToSize(this._processor.HostSize);
///Save and display hiding capacity of cover object
this._hidingCapacity = (int)this._processor.HidingCapacity / 2;
summaryControl.HidingCapacity = this.ToSize(this._hidingCapacity);
///Setup the maximum length of message
this.rtxt_message.MaxLength = this._hidingCapacity - (Stego.Message.MAX_KEY_LEN + 8);
///Let show the pic in preview box. Open the image by giving the path
///The size mode of this image is set to zoom. So if the image is bigger then the
///frame it will automatically adjust it to fit the frame. Same happens if it is smaller
///then the frame
this.pic_coverPreview.Image = new System.Drawing.Bitmap(this.txt_coverFileName.Text);
}
else if (this._processor.MType == HostMediaType.Wave)
{
///Show the bitmap summary control
WaveSummary summaryControl = new WaveSummary();
this._currentControl = summaryControl;
this.ShowNewSummaryControl(summaryControl);
Wave host = (Wave)this._processor.HostObject;
///Display number of channels
summaryControl.Channels = host.Format.nChannels.ToString();
///Display samples/sec
summaryControl.SamplesPerSec = host.Format.nSamplesPerSec.ToString();
///Save and display hiding capacity of cover object
this._hidingCapacity = (int)this._processor.HidingCapacity / 2;
summaryControl.HidingCapacity = this.ToSize(this._hidingCapacity);
///Setup the maximum length of message
this.rtxt_message.MaxLength = this._hidingCapacity - (Stego.Message.MAX_KEY_LEN + 8);
///Setup the Avi icon image in the preview box
this.pic_coverPreview.Image = global::HideIt.Properties.Resources.wav;
}
else
{
if (this.cb_watermark.Checked)
{
this.LoadWatermarkingStegoProcessor();
}
else
{
this.LoadAviStegoProcessor();
}
}
}
private void LoadWatermarkingStegoProcessor()
{
try
{
///Reduce the message length to 256 character
if (this.cb_watermark.Checked)
{
///Change summary controls
WatermarkSummary summaryControl = new WatermarkSummary();
this._currentControl = summaryControl;
this.ShowNewSummaryControl(summaryControl);
if (this._processor != null)
{
try
{
this._processor.Dispose();
}
catch (Exception)
{
}
this._processor = null;
}
this._processor = StegoProcessorBase.GetProcessor(this.txt_coverFileName.Text, true);
if (this._processor == null)
{
return;
}
this._processor.LoadHost(this.txt_coverFileName.Text, true);
WatermarkingStegoProcessor processor = (WatermarkingStegoProcessor)this._processor;
///Display the length of video
summaryControl.VideoLength = processor.Length.ToString() + " sec";
///Display the framerate
summaryControl.FrameRate = processor.FrameRate.ToString();
///Display the dimensions
summaryControl.Dimension = processor.Width.ToString() + " x " + processor.Height.ToString() + " px";
///Display the hiding capacity
this._hidingCapacity = (int)processor.HidingCapacity / 2;
this.rtxt_message.MaxLength = WATERMARK_LEN;
///If there is already text in text box
if (rtxt_message.Text.Length > WATERMARK_LEN)
{
DialogResult result = UIMessage.Ask(this, @"Enabling watermarking allows only " + WATERMARK_LEN.ToString() + " characters for hiding.\r\n"
+ "The current length of message is " + this.rtxt_message.Text.Length.ToString() + ".\r\n"
+ "Do you wish to automatically strip the mssage to " + WATERMARK_LEN.ToString() + " characters?",
TITLE);
if (result == DialogResult.Yes)
{
this.rtxt_message.Text = this.rtxt_message.Text.Substring(0, WATERMARK_LEN - 1);
}
else
{
this.cb_watermark.Checked = false;
}
}
}
else
{
this.LoadProcessor(this.txt_coverFileName.Text);
}
}
catch (Exception exc)
{
UIMessage.Error(exc.Message, TITLE);
if (this._processor != null)
{
try
{
this._processor.Dispose();
}
catch (Exception)
{
}
this._processor = null;
}
}
}
