public static Bitmap DecompressHuffman(string imgSrc)
{
//moram da pocnem odmah otvaranjem fajla i ucitavanjem bajtova redom kako su upisivani
byte[] bmpWidth;
byte[] bmpHeight;
byte[] stride;
byte[] downsampleChannels;
byte[] dictionarySize;
byte[] dictionary;
byte[] YDataLen;
byte[] CbDataLen;
byte[] CrDataLen;
byte[] imageData;
HuffmanTree tree = new HuffmanTree();
using (var reader = new BinaryReader(File.Open(imgSrc, FileMode.Open)))
{
bmpWidth = reader.ReadBytes(4);
bmpHeight = reader.ReadBytes(4);
stride = reader.ReadBytes(4);
downsampleChannels = reader.ReadBytes(4);
YDataLen = reader.ReadBytes(4);
CbDataLen = reader.ReadBytes(4);
CrDataLen = reader.ReadBytes(4);
dictionarySize = reader.ReadBytes(4);
int dictSize = BitConverter.ToInt32(dictionarySize, 0);
dictionary = reader.ReadBytes(dictSize);
tree.DeserializeDictionary(dictionary);
List <byte> compressedData = new List <byte>();
while (reader.BaseStream.Position != reader.BaseStream.Length)
{
compressedData.Add(reader.ReadByte());
}
imageData = tree.Decode(new BitArray(compressedData.ToArray()));
}
int width = BitConverter.ToInt32(bmpWidth, 0);
int height = BitConverter.ToInt32(bmpHeight, 0);
int strideInt = BitConverter.ToInt32(stride, 0);
int downampleChannelsInt = BitConverter.ToInt32(downsampleChannels, 0);
int yDataLen = BitConverter.ToInt32(YDataLen, 0);
int cbDataLen = BitConverter.ToInt32(CbDataLen, 0);
int crDataLen = BitConverter.ToInt32(CrDataLen, 0);
DownsampleFormat format = new DownsampleFormat(strideInt, width, height, yDataLen, cbDataLen, crDataLen, downampleChannelsInt);
format.data = imageData;
Downsampling sampling = new Downsampling();
return(sampling.RestoreBitmap(format));
}
