public void fromYCbCr()
{
#region doc_ycbcr
// This example shows how to convert to and from various
// pixel representations. For example, let's say we start
// with a YCbCr pixel with the value (0.8, 0.2, 0.5):
YCbCr yCbCr = new YCbCr(y: 0.8f, cb: 0.2f, cr: 0.5f);
// The value of this pixel in RGB format would be:
RGB rgb = yCbCr.ToRGB(); // should be (255, 95, 255)
// The value of this pixel in HSL format would be:
HSL hsl = HSL.FromRGB(rgb); // should be (299, 0.99999994, 0.6862745)
// Note: we can also convert using casting:
RGB a = (RGB)yCbCr;
HSL b = (HSL)yCbCr;
#endregion
Assert.AreEqual(255, rgb.Red);
Assert.AreEqual(95, rgb.Green);
Assert.AreEqual(255, rgb.Blue);
Assert.AreEqual(255, rgb.Alpha);
Assert.AreEqual(299, hsl.Hue, 1);
Assert.AreEqual(0.99999994, hsl.Saturation, 1e-6);
Assert.AreEqual(0.6862745, hsl.Luminance, 1e-6);
Assert.AreEqual(0.8, yCbCr.Y, 1e-6);
Assert.AreEqual(0.2, yCbCr.Cb, 1e-6);
Assert.AreEqual(0.5, yCbCr.Cr, 1e-6);
Assert.AreEqual(rgb, a);
Assert.AreEqual(hsl, b);
}
protected unsafe override void ProcessFilter(UnmanagedImage image, Rectangle rect)
{
int num = (image.PixelFormat == PixelFormat.Format24bppRgb) ? 3 : 4;
int left = rect.Left;
int top = rect.Top;
int num2 = left + rect.Width;
int num3 = top + rect.Height;
int num4 = image.Stride - rect.Width * num;
RGB rGB = new RGB();
YCbCr yCbCr = new YCbCr();
byte *ptr = (byte *)image.ImageData.ToPointer();
ptr += top * image.Stride + left * num;
for (int i = top; i < num3; i++)
{
int num5 = left;
while (num5 < num2)
{
bool flag = false;
rGB.Red = ptr[2];
rGB.Green = ptr[1];
rGB.Blue = *ptr;
YCbCr.FromRGB(rGB, yCbCr);
if (yCbCr.Y >= yRange.Min && yCbCr.Y <= yRange.Max && yCbCr.Cb >= cbRange.Min && yCbCr.Cb <= cbRange.Max && yCbCr.Cr >= crRange.Min && yCbCr.Cr <= crRange.Max)
{
if (!fillOutsideRange)
{
if (updateY)
{
yCbCr.Y = fillY;
}
if (updateCb)
{
yCbCr.Cb = fillCb;
}
if (updateCr)
{
yCbCr.Cr = fillCr;
}
flag = true;
}
}
else if (fillOutsideRange)
{
if (updateY)
{
yCbCr.Y = fillY;
}
if (updateCb)
{
yCbCr.Cb = fillCb;
}
if (updateCr)
{
yCbCr.Cr = fillCr;
}
flag = true;
}
if (flag)
{
YCbCr.ToRGB(yCbCr, rGB);
ptr[2] = rGB.Red;
ptr[1] = rGB.Green;
*ptr = rGB.Blue;
}
num5++;
ptr += num;
}
ptr += num4;
}
}
private void OpenMrgFile_btn_Click(object sender, EventArgs e)
{
// Displays an OpenFileDialog so the user can select a Cursor.
OpenFileDialog openFileDialog1 = new OpenFileDialog();
openFileDialog1.Filter = "MRG Files(*.MRG)|*.MRG|All files (*.*)|*.*";
openFileDialog1.Title = "Select an MRG File";
// Show the Dialog.
if (openFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
using (FileStream originalFileStream = (FileStream)openFileDialog1.OpenFile())
{
using (FileStream decompressedFileStream = File.Create("temp"))
{
using (GZipStream decompressionStream = new GZipStream(originalFileStream, CompressionMode.Decompress))
{
decompressionStream.CopyTo(decompressedFileStream);
}
}
}
}
int Quality = 0;
int width = 0;
int height = 0;
string line;
StreamReader file = new StreamReader("temp");
if ((line = file.ReadLine()) != null)
{
int x = 0;
int.TryParse(line, out x);
Quality = x;
}
if ((line = file.ReadLine()) != null)
{
int x = 0;
int.TryParse(line, out x);
width = x;
}
if ((line = file.ReadLine()) != null)
{
int x = 0;
int.TryParse(line, out x);
height = x;
}
List <int> zigzagY = new List <int>();
List <int> zigzagU = new List <int>();
List <int> zigzagV = new List <int>();
for (int i = 0; i < (width * height); i++)
{
if ((line = file.ReadLine()) != null)
{
int x = 0;
int.TryParse(line, out x);
zigzagY.Add(x);
}
}
for (int i = 0; i < (width * height); i++)
{
if ((line = file.ReadLine()) != null)
{
int x = 0;
int.TryParse(line, out x);
zigzagU.Add(x);
}
}
for (int i = 0; i < (width * height); i++)
{
if ((line = file.ReadLine()) != null)
{
int x = 0;
int.TryParse(line, out x);
zigzagV.Add(x);
}
}
Quality_found.Text = Quality.ToString();
width_found.Text = width.ToString();
height_found.Text = height.ToString();
//Create mrgfile object to work with
MRGfile mrgfile = new MRGfile(zigzagY, zigzagU, zigzagV, Quality, width, height);
QualityMatrixAlter(Quality);
//////////
/////////////// convert ZigZag format to array
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
myYcBc MyOwnYcbc = new myYcBc(width, height);
int dezigcount = 0;
for (int y = 0; y < mrgfile.height; y += 8)
{
for (int x = 0; x < mrgfile.width; x += 8)
{
for (int index = 0; index < 64; index++)
{
Coords Targetcoords;
Targetcoords = ZZStraverseValue(index);
MyOwnYcbc.ycbcrArr[Targetcoords.xvalue + x, Targetcoords.yvalue + y].Yquant = mrgfile.zigzagY[dezigcount];
MyOwnYcbc.ycbcrArr[Targetcoords.xvalue + x, Targetcoords.yvalue + y].Uquant = mrgfile.zigzagU[dezigcount];
MyOwnYcbc.ycbcrArr[Targetcoords.xvalue + x, Targetcoords.yvalue + y].Vquant = mrgfile.zigzagV[dezigcount];
dezigcount++;
}
}
}
//////////
/////////////// Reverse Quantization
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
for (int y = 0; y < MyOwnYcbc.height; y += 8)
{
for (int x = 0; x < MyOwnYcbc.width; x += 8)
{
for (int ity = y; ity < y + 8; ity++)
{
for (int itx = x; itx < x + 8; itx++)
{
if (itx < MyOwnYcbc.width && ity < MyOwnYcbc.height)
{
MyOwnYcbc.ycbcrArr[itx, ity].Ydct = MyOwnYcbc.ycbcrArr[itx, ity].Yquant * QuantMatrix[itx - x, ity - y];
MyOwnYcbc.ycbcrArr[itx, ity].Udct = MyOwnYcbc.ycbcrArr[itx, ity].Uquant * QuantMatrix[itx - x, ity - y];
MyOwnYcbc.ycbcrArr[itx, ity].Vdct = MyOwnYcbc.ycbcrArr[itx, ity].Vquant * QuantMatrix[itx - x, ity - y];
}
}
}
}
}
//////////
/////////////// Inverse DCT
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
double[,] YtempIDCT = new double[8, 8];
double[,] UtempIDCT = new double[8, 8];
double[,] VtempIDCT = new double[8, 8];
for (int y = 0; y < MyOwnYcbc.height; y += 8)
{
for (int x = 0; x < MyOwnYcbc.width; x += 8)
{
if (x <= MyOwnYcbc.width - 8 && y <= MyOwnYcbc.height - 8) //safeguard against out of bounds error
{
for (int ity = y; ity < y + 8; ity++)
{
for (int itx = x; itx < x + 8; itx++)
{
YtempIDCT[ity - y, itx - x] = MyOwnYcbc.ycbcrArr[itx, ity].Ydct;
UtempIDCT[ity - y, itx - x] = MyOwnYcbc.ycbcrArr[itx, ity].Udct;
VtempIDCT[ity - y, itx - x] = MyOwnYcbc.ycbcrArr[itx, ity].Vdct;
}
}
CosineTransform.IDCT(YtempIDCT);
CosineTransform.IDCT(UtempIDCT);
CosineTransform.IDCT(VtempIDCT);
for (int ity = y; ity < y + 8; ity++)
{
for (int itx = x; itx < x + 8; itx++)
{
MyOwnYcbc.ycbcrArr[itx, ity].Ynorm = (int)YtempIDCT[ity - y, itx - x];
MyOwnYcbc.ycbcrArr[itx, ity].Unorm = (int)UtempIDCT[ity - y, itx - x];
MyOwnYcbc.ycbcrArr[itx, ity].Vnorm = (int)VtempIDCT[ity - y, itx - x];
}
}
}
}
}
//////////
/////////////// DEnormalize from -128 <-> 127 range to 0 <-> 255
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
for (int y = 0; y < MyOwnYcbc.height; y++)
{
for (int x = 0; x < MyOwnYcbc.width; x++)
{
Yuv ycColorspaceEdit = MyOwnYcbc.ycbcrArr[x, y];
ycColorspaceEdit.Yf = (ycColorspaceEdit.Ynorm) + 128;
if (y % 2 == 0 && x % 2 == 0)
{
ycColorspaceEdit.Uf = (ycColorspaceEdit.Unorm) + 128;
ycColorspaceEdit.Vf = (ycColorspaceEdit.Vnorm) + 128;
}
else
{
ycColorspaceEdit.Uf = (ycColorspaceEdit.Unorm);
ycColorspaceEdit.Vf = (ycColorspaceEdit.Vnorm);
}
MyOwnYcbc.ycbcrArr[x, y] = ycColorspaceEdit;
}
}
//////////
/////////////// Convert from YUV to RGB and assign to bitmap image
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Bitmap Finalbitmap = new Bitmap(MyOwnYcbc.width, MyOwnYcbc.height);
for (int y = 0; y < MyOwnYcbc.height; y++)
{
for (int x = 0; x < MyOwnYcbc.width; x++)
{
YCbCr ycrcb = new YCbCr();
RGB rgbcolor = new RGB();
ycrcb.Y = (float)(MyOwnYcbc.ycbcrArr[x, y].Yf / 255);
ycrcb.Cr = (float)(MyOwnYcbc.ycbcrArr[x, y].Uf / 255);
ycrcb.Cb = (float)(MyOwnYcbc.ycbcrArr[x, y].Vf / 255);
//rgbcolor.Red = (byte)(ycrcb.Cr * 255);
//rgbcolor.Blue = (byte)(ycrcb.Cr * 255);
//rgbcolor.Green = (byte)(ycrcb.Cr * 255);
YCbCr.ToRGB(ycrcb, rgbcolor);
Finalbitmap.SetPixel(x, y, rgbcolor.Color);
}
}
System.Drawing.Image.GetThumbnailImageAbort myCallback = new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback);
DecompressedResultBox.Image = Finalbitmap.GetThumbnailImage(DecompressedResultBox.Width, DecompressedResultBox.Height, myCallback, IntPtr.Zero);
Coords testcoords;
testcoords.xvalue = 920;
testcoords.yvalue = 0;
for (int y = testcoords.yvalue; y < testcoords.yvalue + 8; y++)
{
for (int x = testcoords.xvalue; x < testcoords.xvalue + 8; x++)
{
Matrixviewer.Rows[y - testcoords.yvalue].Cells[x - testcoords.xvalue].Value = MyOwnYcbc.ycbcrArr[x, y].Yquant;
//Matrixviewer.Rows[x].Cells[y].Value = QuantMatrix[x, y];
//Matrixviewer.Rows[x].Cells[y].Value = testoutputmatrix[x, y];
}
}
//for (int y = 0; y < 8; y++)
//{
// for (int x = 0; x < 8; x++)
// {
// Matrixviewer.Rows[x].Cells[y].Value = QuantMatrix[x, y];
// //Matrixviewer.Rows[x].Cells[y].Value = testoutputmatrix[x, y];
// }
//}
}
public Image process(Image imageIn)
{
Color rgb = new Color();
YCbCr ycbcr = new YCbCr();
float ky = 0, by = 0;
float kcb = 0, bcb = 0;
float kcr = 0, bcr = 0;
// Y line parameters
if (inY.Max != inY.Min)
{
ky = (outY.Max - outY.Min) / (inY.Max - inY.Min);
by = outY.Min - ky * inY.Min;
}
// Cb line parameters
if (inCb.Max != inCb.Min)
{
kcb = (outCb.Max - outCb.Min) / (inCb.Max - inCb.Min);
bcb = outCb.Min - kcb * inCb.Min;
}
// Cr line parameters
if (inCr.Max != inCr.Min)
{
kcr = (outCr.Max - outCr.Min) / (inCr.Max - inCr.Min);
bcr = outCr.Min - kcr * inCr.Min;
}
for (int x = 0; x < imageIn.getWidth(); x++)
{
for (int y = 0; y < imageIn.getHeight(); y++)
{
rgb.R = (byte)imageIn.getRComponent(x, y);
rgb.G = (byte)imageIn.getGComponent(x, y);
rgb.B = (byte)imageIn.getBComponent(x, y);
// convert to YCbCr
ycbcr = YCbCr.FromRGB(rgb, ycbcr);
// correct Y
if (ycbcr.Y >= inY.Max)
{
ycbcr.Y = outY.Max;
}
else if (ycbcr.Y <= inY.Min)
{
ycbcr.Y = outY.Min;
}
else
{
ycbcr.Y = ky * ycbcr.Y + by;
}
// correct Cb
if (ycbcr.Cb >= inCb.Max)
{
ycbcr.Cb = outCb.Max;
}
else if (ycbcr.Cb <= inCb.Min)
{
ycbcr.Cb = outCb.Min;
}
else
{
ycbcr.Cb = kcb * ycbcr.Cb + bcb;
}
// correct Cr
if (ycbcr.Cr >= inCr.Max)
{
ycbcr.Cr = outCr.Max;
}
else if (ycbcr.Cr <= inCr.Min)
{
ycbcr.Cr = outCr.Min;
}
else
{
ycbcr.Cr = kcr * ycbcr.Cr + bcr;
}
// convert back to RGB
rgb = YCbCr.ToRGB(ycbcr, rgb);
imageIn.setPixelColor(x, y, rgb.R, rgb.G, rgb.B);
}
}
return(imageIn);
}
protected unsafe override void ProcessFilter(UnmanagedImage image, Rectangle rect)
{
int num = System.Drawing.Image.GetPixelFormatSize(image.PixelFormat) / 8;
int left = rect.Left;
int top = rect.Top;
int num2 = left + rect.Width;
int num3 = top + rect.Height;
int num4 = image.Stride - rect.Width * num;
RGB rGB = new RGB();
YCbCr yCbCr = new YCbCr();
float num5 = 0f;
float num6 = 0f;
float num7 = 0f;
float num8 = 0f;
float num9 = 0f;
float num10 = 0f;
if (inY.Max != inY.Min)
{
num5 = (outY.Max - outY.Min) / (inY.Max - inY.Min);
num6 = outY.Min - num5 * inY.Min;
}
if (inCb.Max != inCb.Min)
{
num7 = (outCb.Max - outCb.Min) / (inCb.Max - inCb.Min);
num8 = outCb.Min - num7 * inCb.Min;
}
if (inCr.Max != inCr.Min)
{
num9 = (outCr.Max - outCr.Min) / (inCr.Max - inCr.Min);
num10 = outCr.Min - num9 * inCr.Min;
}
byte *ptr = (byte *)image.ImageData.ToPointer();
ptr += top * image.Stride + left * num;
for (int i = top; i < num3; i++)
{
int num11 = left;
while (num11 < num2)
{
rGB.Red = ptr[2];
rGB.Green = ptr[1];
rGB.Blue = *ptr;
YCbCr.FromRGB(rGB, yCbCr);
if (yCbCr.Y >= inY.Max)
{
yCbCr.Y = outY.Max;
}
else if (yCbCr.Y <= inY.Min)
{
yCbCr.Y = outY.Min;
}
else
{
yCbCr.Y = num5 * yCbCr.Y + num6;
}
if (yCbCr.Cb >= inCb.Max)
{
yCbCr.Cb = outCb.Max;
}
else if (yCbCr.Cb <= inCb.Min)
{
yCbCr.Cb = outCb.Min;
}
else
{
yCbCr.Cb = num7 * yCbCr.Cb + num8;
}
if (yCbCr.Cr >= inCr.Max)
{
yCbCr.Cr = outCr.Max;
}
else if (yCbCr.Cr <= inCr.Min)
{
yCbCr.Cr = outCr.Min;
}
else
{
yCbCr.Cr = num9 * yCbCr.Cr + num10;
}
YCbCr.ToRGB(yCbCr, rGB);
ptr[2] = rGB.Red;
ptr[1] = rGB.Green;
*ptr = rGB.Blue;
num11++;
ptr += num;
}
ptr += num4;
}
}
protected unsafe override void ProcessFilter(UnmanagedImage image, Rectangle rect)
{
int num = System.Drawing.Image.GetPixelFormatSize(image.PixelFormat) / 8;
int width = image.Width;
int height = image.Height;
int left = rect.Left;
int top = rect.Top;
int num2 = left + rect.Width;
int num3 = top + rect.Height;
int num4 = image.Stride - rect.Width * num;
BitmapData bitmapData = null;
int num5 = 0;
byte * ptr;
if (channelImage != null)
{
if (width != channelImage.Width || height != channelImage.Height)
{
throw new InvalidImagePropertiesException("Channel image size does not match source image size.");
}
bitmapData = channelImage.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadOnly, PixelFormat.Format8bppIndexed);
ptr = (byte *)bitmapData.Scan0.ToPointer();
num5 = bitmapData.Stride;
}
else
{
if (width != unmanagedChannelImage.Width || height != unmanagedChannelImage.Height)
{
throw new InvalidImagePropertiesException("Channel image size does not match source image size.");
}
ptr = (byte *)(void *)unmanagedChannelImage.ImageData;
num5 = unmanagedChannelImage.Stride;
}
int num6 = num5 - rect.Width;
RGB rGB = new RGB();
YCbCr yCbCr = new YCbCr();
byte *ptr2 = (byte *)image.ImageData.ToPointer();
ptr2 += top * image.Stride + left * num;
ptr += top * num5 + left;
for (int i = top; i < num3; i++)
{
int num7 = left;
while (num7 < num2)
{
rGB.Red = ptr2[2];
rGB.Green = ptr2[1];
rGB.Blue = *ptr2;
YCbCr.FromRGB(rGB, yCbCr);
switch (channel)
{
case 0:
yCbCr.Y = (float)(int)(*ptr) / 255f;
break;
case 1:
yCbCr.Cb = (float)(int)(*ptr) / 255f - 0.5f;
break;
case 2:
yCbCr.Cr = (float)(int)(*ptr) / 255f - 0.5f;
break;
}
YCbCr.ToRGB(yCbCr, rGB);
ptr2[2] = rGB.Red;
ptr2[1] = rGB.Green;
*ptr2 = rGB.Blue;
num7++;
ptr2 += num;
ptr++;
}
ptr2 += num4;
ptr += num6;
}
if (bitmapData != null)
{
channelImage.UnlockBits(bitmapData);
}
}
