public void DecodeImage(IDownSampler downSampler, QuantizeMethod quantizeMethod, int quantizeParameter)
{
GetQuantizeds(quantizeMethod, quantizeParameter, out var quantizedY, out var quantizedCb, out var quantizedCr);
var iQuantizedY = new double[256, 256];
var iQuantizedCb = new double[128, 128];
var iQuantizedCr = new double[128, 128];
if (quantizeMethod == QuantizeMethod.ZigZag)
{
iQuantizedY = quantizedY.GetIQuantizeUsingZigZagMethod(quantizeParameter);
iQuantizedCb = quantizedCb.GetIQuantizeUsingZigZagMethod(quantizeParameter);
iQuantizedCr = quantizedCr.GetIQuantizeUsingZigZagMethod(quantizeParameter);
}
if (quantizeMethod == QuantizeMethod.Method2)
{
iQuantizedY = quantizedY.GetIQuantizeUsingMethod2(quantizeParameter);
iQuantizedCb = quantizedCb.GetIQuantizeUsingMethod2(quantizeParameter);
iQuantizedCr = quantizedCr.GetIQuantizeUsingMethod2(quantizeParameter);
}
if (quantizeMethod == QuantizeMethod.JpegQuality)
{
iQuantizedY = quantizedY.GetIQuantizeUsingJpegQualityMethod(quantizeParameter);
iQuantizedCb = quantizedCb.GetIQuantizeUsingJpegQualityMethod(quantizeParameter);
iQuantizedCr = quantizedCr.GetIQuantizeUsingJpegQualityMethod(quantizeParameter);
}
var iDctY = dct.GetIDiscreteCosineTransform(iQuantizedY);
var iDctCb = dct.GetIDiscreteCosineTransform(iQuantizedCb);
var iDctCr = dct.GetIDiscreteCosineTransform(iQuantizedCr);
var upSampledCb = downSampler.GetUpSampledMatrix(iDctCb);
var upSampledCr = downSampler.GetUpSampledMatrix(iDctCr);
var yCbCrPixels = new YCbCrPixel[256, 256];
for (int i = 0; i < 256; i++)
{
for (int j = 0; j < 256; j++)
{
yCbCrPixels[i, j] = new YCbCrPixel
{
Y = (byte)iDctY[i, j],
Cb = (byte)upSampledCb[i, j],
Cr = (byte)upSampledCr[i, j]
};
}
}
ReconstructedImage = GetBitmapFromYCbCrPixels(yCbCrPixels);
}
public void Setup()
{
var dependencyResolver = new DependencyResolver();
jpegEncoder = (JpegEncoder)dependencyResolver.GetObject <IJpegEncoder>();
downSampler = new DownSampler411();
filePathSource = $"{Environment.CurrentDirectory}\\temp.bmp";
filePathEncodedFile = $"{Environment.CurrentDirectory}\\temp.bmp.pre";
filePathDecodedFile = $"{Environment.CurrentDirectory}\\temp.png.pre.jpg";
TestMethods.CopyFileAndReplaceIfAlreadyExists($"{Environment.CurrentDirectory}\\Images\\TestImage1.bmp", filePathSource);
}
public void EncodeImage(IFileReader fileReader, IDownSampler downSampler)
{
GetImageFromFileReader(fileReader);
var pixels = GetYCbCrPixelsFromImage(OriginalImage);
GetMatrices(pixels, out var yMatrix, out var cbMatrix, out var crMatrix);
var downSampledCbMatrix = downSampler.GetDownSampledMatrix(cbMatrix);
var downSampledCrMatrix = downSampler.GetDownSampledMatrix(crMatrix);
DctY = dct.GetDiscreteCosineTransform(yMatrix);
DctCb = dct.GetDiscreteCosineTransform(downSampledCbMatrix);
DctCr = dct.GetDiscreteCosineTransform(downSampledCrMatrix);
}
