/// <summary>
/// </summary>
/// <param name="Algo"></param>
public byte[] ComputeLargeStreamHash(Stream Stream, RateTracker Tracker, ChecksumProgressEventHandler Callback)
{
// Buffer size optimized for reading massive files.
byte[] buffer = MemoryPool.AllocBuffer(BufferSize);
int bytesRead;
do
{
bytesRead = Stream.Read(buffer, 0, BufferSize);
if (bytesRead > 0)
{
HashCore(buffer, 0, bytesRead);
if (Callback != null)
{
Callback?.Invoke(bytesRead);
}
if (Tracker != null)
{
Tracker.Out(bytesRead);
}
}
} while (bytesRead > 0);
HashValue = HashFinal();
byte[] Tmp = (byte[])HashValue.Clone();
Initialize();
MemoryPool.ReleaseBuffer(buffer);
return(Tmp);
}
/// <summary>
/// </summary>
/// <param name="FilePath"></param>
/// <returns></returns>
public static string GetChecksum(string FilePath, RateTracker Tracker, ChecksumProgressEventHandler Callback = null)
{
using (SHA1Extended crc = new SHA1Extended())
{
using (FileStream stream = File.Open(FilePath, FileMode.Open, FileAccess.Read, FileShare.Read))
{
byte[] hash = crc.ComputeLargeStreamHash(stream, Tracker, Callback);
return(BitConverter.ToString(hash).Replace("-", "").ToLowerInvariant());
}
}
}
