public void RleEncodeDecodeLongSequence() { byte[] bytes = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, }; byte[] encoded = Rle.Encode(bytes); byte[] decoded = Rle.Decode(encoded); Assert.Less(encoded.Length, bytes.Length); Assert.AreEqual(bytes, decoded); }
public void RleEncodeDecode() { byte[] bytes = new byte[] { 0, 0, 0, 0, 0, 0, 4, 2, 0, 4, 4, 4, 4, 4, 4, 4, 80, 80, 80, 80, 0, 2, 2, 2, 2, 255, 255, 255, 255, 255, 0, 0 }; byte[] encoded = Rle.Encode(bytes); byte[] decoded = Rle.Decode(encoded); Assert.Less(encoded.Length, bytes.Length); Assert.AreEqual(bytes, decoded); }
public Bitmap Decompress(CompressedImage compressedImage) { var unHuf = HuffmanCodec.Decode(compressedImage.DataBytes, compressedImage.DecodeTable, compressedImage.BitsCount); var unRle = Rle <byte> .Decode(unHuf).ToArray(); var yDct = new List <double>(); var cbDct = new List <double>(); var crDct = new List <double>(); var countYBlocks = compressedImage.ThinIndex * compressedImage.ThinIndex; var cellsToBlock = compressedImage.CompressionLevel; for (var i = 0; i < unRle.Length;) { for (var j = 0; j < countYBlocks * cellsToBlock; j++) { yDct.Add(unRle[i++]); } for (var j = 0; j < cellsToBlock; j++) { cbDct.Add(unRle[i++]); } for (var j = 0; j < cellsToBlock; j++) { crDct.Add(unRle[i++]); } } var yDctBlocks = DevideIntoPiece(yDct, compressedImage.CompressionLevel); var cbDctBlocks = DevideIntoPiece(cbDct, compressedImage.CompressionLevel); var crDctBlocks = DevideIntoPiece(crDct, compressedImage.CompressionLevel); var yChannel = _dctDecompressor.Decompress(yDctBlocks, _dctSize, compressedImage.Height, compressedImage.Width, _lumiaMatrixProvider.GetMatrix()); var thinnedCbChannel = _dctDecompressor.Decompress(cbDctBlocks, _dctSize, compressedImage.Height / compressedImage.ThinIndex, compressedImage.Width / compressedImage.ThinIndex, _colorMatrixProvider.GetMatrix()); var thinnedCrChannel = _dctDecompressor.Decompress(crDctBlocks, _dctSize, compressedImage.Height / compressedImage.ThinIndex, compressedImage.Width / compressedImage.ThinIndex, _colorMatrixProvider.GetMatrix()); var cbChannel = _pieceMatrixExtender.Extend(thinnedCbChannel, compressedImage.ThinIndex); var crChannel = _pieceMatrixExtender.Extend(thinnedCrChannel, compressedImage.ThinIndex); var yCbCrChannels = new YCbCrChannels(yChannel, cbChannel, crChannel); var yCbCrPixels = _iChannelsPacker.Pack(yCbCrChannels, compressedImage.Height, compressedImage.Width); var matrixRgbPixels = MatrixYCbCrToRgbConverter.Convert(yCbCrPixels); var bmp = _bitmapBuilder.Build(matrixRgbPixels); return(bmp); }