private void CompressBlocks()
{
//Random rnd = new Random(Thread.CurrentThread.ManagedThreadId);
byte[] buffer = new byte[_blockSize];
int readedData = 0;
int blockId = 0;
string originalFileName = InFileInfo.Name;
while (true)
{
lock (_lockPoint)
{
readedData = _inFileStream.Read(buffer, 0, buffer.Length);
if (readedData == 0 && blockIter != 0)
{
break;
}
blockId = blockIter;
blockIter++;
}
using (var mem = new MemoryStream())
{
using (var gzStream = new GZipStreamEx(mem, CompressionMode.Compress))
{
gzStream.Write(buffer, 0, readedData);
}
//Console.WriteLine("Thread #{0} write block #{1, -10} to queue #{2}", Thread.CurrentThread.ManagedThreadId, blockId, blockId % _numReadThreads);
//Console.WriteLine("Producer #{0} has {1, 10} elements", blockId % _numReadThreads, _compressedBlocksProd[blockId % _numReadThreads].Count());
//Thread.Sleep(rnd.Next(500, 1500));
_compressedBlocksProd[blockId % _numReadThreads].Enqueue(new DataBlock(mem.ToArray(), (int)mem.Length, blockId));
}
}
}
private void DecompressBlocks()
{
int readedData = 0;
int blockId = 0;
string origFileName = InFileInfo.Name;
byte[] buffer = null;
int size = 0;
while (true)
{
lock (_lockPoint)
{
if (_inFileStream.Length == _inFileStream.Position)
{
break;
}
int blockSize = 0;
if (GZipStreamEx.TryGetBlockSize(_inFileStream, out blockSize) == false)
{
throw new InvalidDataException("архив повреждён");
}
buffer = new byte[blockSize];
readedData = _inFileStream.Read(buffer, 0, buffer.Length);
blockId = blockIter;
blockIter++;
}
size = BitConverter.ToInt32(buffer, buffer.Length - 4);
using (MemoryStream output = new MemoryStream())
{
using (var input = new MemoryStream(buffer))
{
using (var gzStream = new GZipStreamEx(input, CompressionMode.Decompress))
{
byte[] localBuffer = new byte[size];
int decompCountBytes = 0;
do
{
decompCountBytes = gzStream.Read(localBuffer, 0, size);
output.Write(localBuffer, 0, decompCountBytes);
}while (decompCountBytes != 0);
_decompressedBlocksProd[blockId % _numReadThreads].Enqueue(new DataBlock(output.ToArray(), (int)output.Length, blockId));
}
}
}
}
}