public void Code(Bitmap N, int q)
{
// if (!sw.IsRunning)
// {
sw.Start();
// }
New = N;
int width = New.Width;
int height = New.Height;
int left = width;
int right = 0;
int top = height;
int bottom = 0;
List <Rectangle> horizantals = new List <Rectangle>();
Blocks = new List <Rectangle>();
BlocksData = new List <Stream>();
int lastX = -1, lastY = -1;
if (Old == null || quality != q)
{
//if ther is no old image to compare to , just send the new one
Old = New;
quality = q;
BlocksData.Add(CaptureScreen.Compress(New, q));
Blocks.Add(new Rectangle(0, 0, width, height));
}
else
{
try
{
NewData = New.LockBits(
new Rectangle(0, 0, New.Width, New.Height),
ImageLockMode.ReadOnly, New.PixelFormat);
OldData = Old.LockBits(
new Rectangle(0, 0, Old.Width, Old.Height),
ImageLockMode.ReadOnly, Old.PixelFormat);
int strideNew = NewData.Stride / nbpp;
int strideOld = OldData.Stride / nbpp;
IntPtr scanNew0 = NewData.Scan0;
IntPtr scanOld0 = OldData.Scan0;
Console.WriteLine("setting up :" + sw.ElapsedMilliseconds + " ms");
sw.Reset();
sw.Start();
unsafe
{
int *pNew = (int *)(void *)scanNew0;
int *pPrev = (int *)(void *)scanOld0;
// we are going to scan from top to bottom , left to right
// whene we finde something has changed we see if the position
// of the that pixel if its the extremest , we set it as a border to get
// the changed area
for (int y = 0; y < New.Height; ++y)
{
for (int x = 0; x < Old.Width; ++x)
{
if ((pNew + x)[0] != (pPrev + x)[0])
{
if (x < left)
{
left = x;
}
if (x > right)
{
right = x;
}
if (y < top)
{
top = y;
}
if (y > bottom)
{
bottom = y;
}
lastY = y;
}
}
if ((y - lastY > 20 && lastY != -1) || (bottom == New.Height - 1 && top == 0))
{
horizantals.Add(new Rectangle(left, top, right - left, bottom - top + 1));
left = width;
right = 0;
top = height;
bottom = 0;
lastY = -1;
}
pNew += strideNew;
pPrev += strideOld;
}
Console.WriteLine("first scan :" + sw.ElapsedMilliseconds + " ms");
sw.Reset();
sw.Start();
//get small rectangles
for (int i = 0; i < horizantals.Count; i++)
{
left = horizantals[i].X + horizantals[i].Width;
right = horizantals[i].X;
for (int x = horizantals[i].X; x < horizantals[i].X + horizantals[i].Width + 1; x++)
{
pNew = (int *)(void *)scanNew0;
pPrev = (int *)(void *)scanOld0;
for (int y = horizantals[i].Y; y < horizantals[i].Top + horizantals[i].Bottom; ++y)
{
if ((pNew + x)[0] != (pPrev + x)[0])
{
if (x <= left)
{
left = x;
}
if (x >= right)
{
right = x;
}
lastX = x;
}
pNew += strideNew;
pPrev += strideOld;
}
if ((x - lastX > 10 && lastX != -1) || (left == horizantals[i].X && right + 1 == horizantals[i].X + horizantals[i].Width + 1))
{
Blocks.Add(new Rectangle(left, horizantals[i].Top, right - left, horizantals[i].Bottom - horizantals[i].Top));
left = horizantals[i].X + horizantals[i].Width;
right = horizantals[i].X;
lastX = -1;
}
}
}
Console.WriteLine("cutting :" + sw.ElapsedMilliseconds + " ms");
sw.Reset();
sw.Start();
}
}
catch (Exception ex)
{
}
finally
{
if (NewData != null)
{
New.UnlockBits(NewData);
}
if (OldData != null)
{
Old.UnlockBits(OldData);
}
}
for (int i = 0; i < Blocks.Count; i++)
{
try
{
Rectangle bounds = Blocks[i];
bounds.Width = bounds.Width == 0 ? 1 : bounds.Width = bounds.Width;
bounds.Height = bounds.Width == 0 ? 1 : bounds.Height = bounds.Height;
Bitmap diff = new Bitmap(bounds.Width, bounds.Height);
Graphics _graphics = Graphics.FromImage(diff);
if (bounds.Width > 0)
{
_graphics.DrawImage(New, 0, 0, bounds, GraphicsUnit.Pixel);
}
BlocksData.Add(CaptureScreen.Compress(diff, q));
_graphics.Flush();
_graphics.Dispose();
diff.Dispose();
}
catch (Exception ex)
{
// Console.WriteLine(Blocks[i]);
Console.WriteLine("code : " + ex.TargetSite + " | " + ex.Message);
}
}
Console.WriteLine("creating pics :" + sw.ElapsedMilliseconds + " ms");
sw.Reset();
Old = New;
}
cou++;
// if (sw.ElapsedMilliseconds >= 1000)
// {
// Console.WriteLine("frames :" + cou+ " per "+sw.ElapsedMilliseconds/1000+" secondes");
Console.WriteLine("--------------------------New lap ----------------------");
// sw.Reset();
// sw.Stop();
// cou = 0;
// }
}
public void Code(Bitmap N, int q)
{
BitmapData NewData = null;
const int nbpp = 4; // number of bytes per pixel
New = N;
int width = New.Width;
int height = New.Height;
List <Rectangle> horizantals = new List <Rectangle>();
Blocks = new List <Rectangle>();
BlocksData = new List <Stream>();
try
{
NewData = New.LockBits(
new Rectangle(0, 0, New.Width, New.Height),
ImageLockMode.ReadOnly, New.PixelFormat);
int strideNew = NewData.Stride / nbpp;
IntPtr scanNew0 = NewData.Scan0;
unsafe
{
byte *pScanNew0 = (byte *)scanNew0.ToInt32();
if (_Old == null || quality != q)
{
//if ther is no old image to compare to , just send the new one
_Old = new byte[N.Width * N.Height * nbpp];
quality = q;
BlocksData.Add(CaptureScreen.Compress(New, q));
Blocks.Add(new Rectangle(0, 0, width, height));
if (format == PixelFormat.DontCare)
format = N.PixelFormat;
fixed(byte *ptr = _Old)
{
NativeMethods.memcpy(new IntPtr(ptr), scanNew0, (uint)(N.Width * N.Height * nbpp));
}
return;
}
fixed(byte *ptr = _Old)
{
int top = height;
int bottom = 0;
int lastY = -1;
Rectangle cBlock = new Rectangle();
// we are going to cutt the image in horizontal pieces each time we finde something has changed
for (int y = 0; y < New.Height; ++y)
{
int offset = (y * N.Width * nbpp);
if (NativeMethods.memcmp(ptr + offset, pScanNew0 + offset, (uint)(N.Width * nbpp)) != 0)
{
if (y < top)
{
top = y;
}
if (y > bottom)
{
bottom = y;
}
lastY = y;
NativeMethods.memcpy(ptr + offset, pScanNew0 + offset, (uint)(N.Width * nbpp));
}
if ((y > lastY && lastY != -1) || (lastY == height - 1))
{
Rectangle b = new Rectangle(0, top, N.Width, bottom - top + 1);
horizantals.Add(b);
top = height;
bottom = 0;
lastY = -1;
}
}
}
}
}
catch (Exception e)
{
Console.WriteLine("err : " + e.Message);
}
finally
{
if (NewData != null)
{
New.UnlockBits(NewData);
}
}
// now we have a list of rectangles where changes has happened , so we are going to creat small images from each rectangle
for (int i = 0; i < horizantals.Count; i++)
{
try
{
Rectangle bounds = horizantals[i];
bounds.Width = bounds.Width == 0 ? 1 : bounds.Width = bounds.Width;
bounds.Height = bounds.Width == 0 ? 1 : bounds.Height = bounds.Height;
Bitmap diff = new Bitmap(bounds.Width, bounds.Height);
Graphics _graphics = Graphics.FromImage(diff);
_graphics.DrawImage(New, 0, 0, bounds, GraphicsUnit.Pixel);
// diff.Save("C:\\Users\\islam\\Desktop\\t\\" + Guid.NewGuid().ToString("N") + ".bmp");
BlocksData.Add(CaptureScreen.Compress(diff, q));
_graphics.Flush();
_graphics.Dispose();
diff.Dispose();
}
catch (Exception e)
{
Console.WriteLine("adding exception : " + e.Message);
}
}
Blocks = horizantals;
}
