/// <summary>
/// Function that initializes the program.
/// loads the image into data manager as a byte array.
/// </summary>
public MediaCompression() {
InitializeComponent();
//init Data wrapper class
MPEGData = new List<DataManager>();
Manager = new DataManager();
DataManager mpegManager1 = new DataManager();
DataManager mpegManager2 = new DataManager();
MPEGData.Add(mpegManager1);
MPEGData.Add(mpegManager2);
//init the split container
splitContainer.SplitterWidth = 1;
splitContainer.SplitterDistance = splitContainer.Width/2;
contextMenuStrip1.Items.Add(new ToolStripButton("Compress Image"));
contextMenuStrip2.Items.Add(new ToolStripButton("Set Image"));
contextMenuStrip1.Items.Add(new ToolStripButton("Set Image"));
contextMenuStrip1.Items.Add(new ToolStripButton("Clear"));
contextMenuStrip2.Items.Add(new ToolStripButton("Clear"));
contextMenuStrip2.Items.Add(new ToolStripButton("Open Compressed"));
contextMenuStrip1.ItemClicked += HandleLeftContext;
contextMenuStrip2.ItemClicked += HandleRightContext;
// Tests
//Tester.TestZigZag();
//Tester.TestDCT_Quantize();
Tester.TestWhole();
}
/// <summary>
/// Performs the search on two lists using two managers which contain data
/// about two images.
/// </summary>
/// <param name="manager">data on prev frame</param>
/// <param name="manager2">data on new frame</param>
/// <returns></returns>
public static List<Tuple<Point, Point>> Search(DataManager manager, DataManager manager2) {
List<Tuple<Point, Point>> mvs = new List<Tuple<Point, Point>>();
for (int oi = 0; oi < manager.LumList.Count; oi += 16) {
for (int oj = 0; oj < manager.LumList.Count; oj += 16) {
List<List<float>> C = manager.LumList.GetSquare(oi, oj, 16);
List<List<float>> R = manager2.LumList.GetSquare(oi, oj, 16);
List<List<float>> checkBlock = C.GetSquare(4, 4, 8);
float mad = MeanDifference(checkBlock, R, 8, 4, 4);
Point sp = new Point(oi + 4, oj + 4);
Point ep = new Point(oi + 4, oj + 4);
for (int i = 0; i < oi + 8; i++) {
for (int j = 0; j < oj + 8; j++) {
float nmad = MeanDifference(checkBlock, R, 8, i, j);
if (nmad < mad) {
mad = nmad;
ep = new Point(i + oi, j + oj);
}
}
}
mvs.Add(new Tuple<Point, Point>(sp, ep));
}
}
Bitmap map1 = new Bitmap(manager.LumList.Count, manager.LumList.Count);
Bitmap map2 = new Bitmap(manager2.LumList.Count, manager2.LumList.Count);
for (int i = 0; i < map1.Height; i++) {
for (int j = 0; j < map1.Width; j++) {
map1.SetPixel(i, j, Color.FromArgb((int) manager.LumList[i][j], 0, 0, 0));
map2.SetPixel(i, j, Color.FromArgb((int) manager2.LumList[i][j], 0, 0, 0));
}
}
using (Graphics g = Graphics.FromImage(map1)) {
Pen p = Pens.AliceBlue;
foreach (Tuple<Point, Point> mv in mvs) {
g.DrawLine(p, mv.Item1, mv.Item2);
}
}
manager.box.Image = map1;
manager2.rbox.Image = map2;
return mvs;
}
/// <summary>
/// Constructor for DCT image Processor
/// </summary>
/// <param name="manager">The data manager that contains the program's data</param>
public DctImageProcessor(DataManager manager) {
Manager = manager;
}
/// <summary>
/// Loads output.dct
/// initializes data
/// uses DctImageProcessor::UncoProcess
/// in a thread to display a JPEG image
/// </summary>
/// <param name="sender">c# params</param>
/// <param name="e">c# params</param>
private void openCompressedToolStripMenuItem_Click(object sender, EventArgs e) {
if (FOpen.ShowDialog() != DialogResult.OK)
return;
try {
Stream raw = FOpen.OpenFile();
using (MemoryStream ms = new MemoryStream()) {
raw.CopyTo(ms);
Manager = new DataManager();
leftPicture.Image = null;
rightPicture.Image = null;
Manager.LoadedData = ms.ToArray().Select(s=>(sbyte)s).ToArray();
SetSizeToolStrip(Manager.LoadedData.Length);
Manager.box = leftPicture;
Manager.rbox = rightPicture;
}
}
catch (Exception ex) {
MessageBox.Show(@"Error: Could not read file from disk. Original error: " + ex.Message);
}
DctImageProcessor processor = new DctImageProcessor(Manager);
Task.Run(()=>processor.UndoProcess());
}
private void HandleRightContext(object sender, ToolStripItemClickedEventArgs e) {
if(e.ClickedItem.Text == @"Set Image") {
contextMenuStrip2.Hide();
SetRightImage();
}else if (e.ClickedItem.Text == @"Open Compressed") {
contextMenuStrip2.Hide();
if(FOpen.ShowDialog() != DialogResult.OK)
return;
try {
Stream raw = FOpen.OpenFile();
using(MemoryStream ms = new MemoryStream()) {
raw.CopyTo(ms);
Manager = new DataManager();
leftPicture.Image = null;
rightPicture.Image = null;
Manager.LoadedData = ms.ToArray().Select(s => (sbyte)s).ToArray();
SetSizeToolStrip(Manager.LoadedData.Length);
Manager.box = leftPicture;
Manager.rbox = rightPicture;
}
} catch(Exception ex) {
MessageBox.Show(@"Error: Could not read file from disk. Original error: " + ex.Message);
}
DctImageProcessor processor = new DctImageProcessor(Manager);
Task.Run(() => processor.UndoProcess());
} else {
contextMenuStrip2.Hide();
RightImageClear();
}
}
/// <summary>
/// Method to decompress MPEG
/// opens a file selector
/// reads data
/// initializes its data
/// sends it off to DctImageProcessor::UntoRippeg function
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void decompressToolStripMenuItem2_Click(object sender, EventArgs e) {
if (FOpen.ShowDialog() != DialogResult.OK)
return;
try {
Stream raw = FOpen.OpenFile();
using (MemoryStream ms = new MemoryStream()) {
raw.CopyTo(ms);
MPEGData[0] = new DataManager();
leftPicture.Image = null;
rightPicture.Image = null;
MPEGData[0].LoadedData = ms.ToArray().Select(s => (sbyte)s).ToArray();
SetSizeToolStrip(MPEGData[0].LoadedData.Length);
MPEGData[0].box = leftPicture;
}
}
catch (Exception ex) {
MessageBox.Show(@"Error: Could not read file from disk. Original error: " + ex.Message);
}
DctImageProcessor processor = new DctImageProcessor(MPEGData[0]);
await Task.Run(() => processor.UndoRippeg());
//now we just have to use the vector info to move blocks around.
Bitmap newmap = new Bitmap(MPEGData[0].ImageSize, MPEGData[0].ImageSize);
for (int i = 0; i < MPEGData[0].ImageSize; i++) {
for (int j = 0; j < MPEGData[0].ImageSize; j++) {
newmap.SetPixel(i, j, MPEGData[0].UncutBitmap.GetPixel(i, j));
}
}
using (Graphics g = Graphics.FromImage(newmap)) {
Pen p2 = new Pen(Color.White, 1);
Pen p = new Pen(Color.Black, 2);
foreach (Tuple<Point, Point> mV in MPEGData[0].MVs) {
for (int i = 0; i < 16; i++) {
for (int j = 0; j < 16; j++) {
newmap.SetPixel(
i + mV.Item2.X, j + mV.Item2.Y,
MPEGData[0].UncutBitmap.GetPixel(i + mV.Item1.X, j + mV.Item1.Y)
);
}
}
g.DrawLine(p, mV.Item1, mV.Item2);
g.DrawLine(p2, mV.Item1, mV.Item2);
}
}
rightPicture.Image = Padder.CropImage(newmap,
new Rectangle(0, 0, MPEGData[0].RealWidth, MPEGData[0].RealHeight));
}
private void loadFirstFileToolStripMenuItem_Click(object sender, EventArgs e) {
if (FOpen.ShowDialog() != DialogResult.OK)
return;
try {
MPEGData[0] = new DataManager();
Image image = Image.FromStream(FOpen.OpenFile());
MPEGData[0].SetLeftPicture(image);
MPEGData[0].box = leftPicture;
MPEGData[0].rbox = rightPicture;
leftPicture.Image = MPEGData[0].LeftImageBitmap;
MemoryStream ms = new MemoryStream();
image.Save(ms, ImageFormat.Bmp);
int bytes = (int) ms.Length;
SetSizeToolStrip(bytes);
ms.Close();
}
catch (Exception ex) {
MessageBox.Show(@"Error: Could not read file from disk. Original error: " + ex.Message);
}
MPEGData[0].SplitBytesIntoColorSpaces();
MPEGData[0].DrawYcbcrOnRightBitmap(1);
}