private void GetImageFromFileReader(IFileReader fileReader)
{
fileReader.Close();
using (var fileStream = new FileStream(fileReader.FilePath, FileMode.Open))
{
var bmp = new Bitmap(fileStream);
OriginalImage = bmp;
}
fileReader.Open();
}
public void DecodeFile(string sourceFilepath, string destinationFilepath)
{
fileReader.Open(sourceFilepath);
fileWriter.Open(destinationFilepath);
fileReader.Close();
fileWriter.Close();
throw new System.NotImplementedException();
}
public void Close()
{
try
{
_reader.Close();
}
catch (Exception ex)
{
Log.Error("Error on close reader", ex);
}
}
public void TestThatFileIsCopiedCorrectlyForNumberOfBitsBetween1And8(string fileTextContents)
{
TestMethods.CreateFileWithTextContents(filepathSource, fileTextContents);
var random = new Random();
fileReader.Open(filepathSource);
fileWriter.Open(filepathDestination);
while (!fileReader.ReachedEndOfFile)
{
var numberOfBits = fileReader.BitsLeft < 8
? (byte)fileReader.BitsLeft
: (byte)random.Next(1, 8);
var readStuff = fileReader.ReadBits(numberOfBits);
fileWriter.WriteValueOnBits(readStuff, numberOfBits);
}
fileReader.Close();
fileWriter.Close();
Assert.IsTrue(TestMethods.FilesHaveTheSameContent(filepathSource, filepathDestination));
}
public IList <ImportResultItem <TEntity> > Read(string file)
{
_fileReader.Open(file);
CheckTitles();
try
{
var result = ImportResultItems();
return(result);
}
finally
{
_fileReader.Close();
}
}
public void EncodeFile(string sourceFilepath, string destinationFilepath)
{
fileReader.Open(sourceFilepath);
var sourceFileBytes = GetAllBytesFromSourceFile();
fileReader.Close();
InitializeSymbolDictionaryFromBytes(sourceFileBytes);
fileWriter.Open(destinationFilepath);
fileWriter.Close();
throw new System.NotImplementedException();
}
public ImageMatrices Decode(string sourceFilepath, string destinationFilepath)
{
fileReader.Open(sourceFilepath);
fileWriter.Open(destinationFilepath);
CopyBitmapHeader();
var usedOptions = GetOptions();
var errorMatrixReader = NearLosslessErrorMatrixReaderSelector.GetErrorMatrixReader(usedOptions.SaveMode);
var quantizedErrorMatrix = errorMatrixReader.ReadErrorMatrix(fileReader);
var imageMatrices = ErrorMatrixHelper.GetImageMatricesFromQuantizedErrorMatrix(quantizedErrorMatrix, usedOptions);
WriteImageCodes(imageMatrices.Decoded);
fileReader.Close();
fileWriter.Close();
return(imageMatrices);
}
private void RunForThisNumberOfBits(byte numberOfBits)
{
fileReader.Open(filepathSource);
fileWriter.Open(filepathDestination);
while (!fileReader.ReachedEndOfFile)
{
var numberOfBitsForCurrentIteration = fileReader.BitsLeft < numberOfBits
? (byte)fileReader.BitsLeft
: numberOfBits;
var readStuff = fileReader.ReadBits(numberOfBitsForCurrentIteration);
fileWriter.WriteValueOnBits(readStuff, numberOfBitsForCurrentIteration);
}
fileReader.Close();
fileWriter.Close();
}
public void Encode(string sourceFilepath, string destinationFilepath, NearLosslessOptions nearLosslessOptions)
{
var image = GetImageOrThrow(sourceFilepath);
var imageMatrices = new ImageMatrices(image);
image.Dispose();
PredictionMatrixHelper.SetImageMatrices(imageMatrices, nearLosslessOptions);
fileReader.Open(sourceFilepath);
fileWriter.Open(destinationFilepath);
CopyBitmapHeader();
WriteOptions(nearLosslessOptions);
var errorMatrixWriter = NearLosslessErrorMatrixWriterSelector.GetErrorMatrixWriter(nearLosslessOptions.SaveMode);
errorMatrixWriter.WriteErrorMatrix(imageMatrices.QuantizedErrors, fileWriter);
fileWriter.Flush();
fileReader.Close();
fileWriter.Close();
}
private void ValidateImageFromFileReader(IFileReader fileReader)
{
if (!fileReader.FilePath.EndsWith(".bmp"))
{
throw new InvalidOperationException("Only bmp images can be encoded");
}
fileReader.Close();
var image = new Bitmap(fileReader.FilePath);
try
{
if (image.Size != new Size(256, 256))
{
throw new InvalidOperationException("Image must be 256x256");
}
}
finally
{
image.Dispose();
fileReader.Open();
}
}
public void Close()
{
_fileReader?.Close();
_fileWriter?.Close();
}
