public Bitmap LoadPPMImage(string fileName)
{
using (var ppmReader = new PPMReader(fileName))
{
try
{
_image = ppmReader.ReadFile();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return(null);
}
}
Bitmap bitmap;
if (_image.Type == PPMImageType.P6)
{
int maxR = 0, maxG = 0, maxB = 0;
bitmap = PPM_P6Parser.Parse(_image, ref maxR, ref maxG, ref maxB);
_image.MaxR = maxR;
_image.MaxG = maxG;
_image.MaxB = maxB;
}
else
{
bitmap = PPM_P3Parser.Parse(_image);
}
return(bitmap);
}
public static void WritePPMTest(string ppmFileName)
{
Picture rgbPicture = PPMReader.ReadFromPPMFile(ppmFileName, stepX, stepY);
Picture yCbCrPicture = Picture.toYCbCr(rgbPicture);
writePPM(ppmFileName, yCbCrPicture);
}
public void PPMImageReader_correctly_parses_P6_file()
{
var reader = new PPMReader("test1.ppm");
var file = reader.ReadFile();
Assert.AreEqual(1, file.BytesPerColor);
Assert.AreEqual(PPMImageType.P6, file.Type);
Assert.AreEqual(610, file.Columns);
Assert.AreEqual(460, file.Rows);
}
private void LoadButton_Click(object sender, RoutedEventArgs e)
{
var openDialog = new OpenFileDialog();
openDialog.Filter = "Image (*.ppm)|*.ppm";
if (openDialog.ShowDialog() == true)
{
_filename = openDialog.FileName;
if (shouldDepict)
{
source.Source = BitmapToImageSource(PPMReader.ReadBitmapFromPPM(_filename));
}
}
}
private async void ApplyFilter()
{
if (_filename == null)
{
consoleOutput.Text = "Incorrect file";
return;
}
if (_divisor == 0)
{
consoleOutput.Text = "Divisor can't be 0";
return;
}
if (_filter.All(x => x == 0))
{
consoleOutput.Text = "Matrix can't be empty";
return;
}
LoadButton.IsEnabled = false;
ApllyBut.IsEnabled = false;
if (CompareFilterZero(0, 6) && CompareFilterZero(19, 25) && CompareFilterZero(4, 25, 5) && CompareFilterZero(0, 20, 5))
{
sbyte[] filter3 = new sbyte[] { _filter[6], _filter[7], _filter[8],
_filter[11], _filter[12], _filter[13],
_filter[16], _filter[17], _filter[18] };
await Task.Run(() => runFilter3(filter3, _divisor, _offset, _filename, _compareCPU));
}
else
{
await Task.Run(() => runFilter5(_filter, _divisor, _offset, _filename, _compareCPU));
}
ApllyBut.IsEnabled = true;
LoadButton.IsEnabled = true;
if (shouldDepict)
{
string newFilename = _filename.Substring(0, _filename.Length - 4) + "f_gpu.ppm";
if (File.Exists(newFilename))
{
dest.Source = BitmapToImageSource(PPMReader.ReadBitmapFromPPM(newFilename));
}
else
{
newFilename = _filename.Substring(0, _filename.Length - 4) + "f_cpu.ppm";
if (File.Exists(newFilename))
{
dest.Source = BitmapToImageSource(PPMReader.ReadBitmapFromPPM(newFilename));
}
}
}
return;
}
public static void WriteJPEG(string ppmFileName, string jpegFileName)
{
Picture rgbPicture = PPMReader.ReadFromPPMFile(ppmFileName, stepX, stepY);
Picture yCbCrPicture = Picture.toYCbCr(rgbPicture);
yCbCrPicture.Reduce();
yCbCrPicture.Transform();
yCbCrPicture.Quantisize();
yCbCrPicture.ZickZackSort();
yCbCrPicture.ResortPicture();
yCbCrPicture.CalculateCoefficients();
yCbCrPicture.GenerateHuffmanTrees();
JPEGWriter.WritePictureToJPEG(jpegFileName, yCbCrPicture);
}
public static IPNMReader GetIPNMReader(PNMType ptype)
{
IPNMReader imReader = null;
switch (ptype)
{
case PNMType.PBM:
imReader = new PBMReader();
break;
case PNMType.PGM:
imReader = new PGMReader();
break;
case PNMType.PPM:
imReader = new PPMReader();
break;
}
return(imReader);
}
