public static Murmur128 Create128(uint seed = 0, AlgorithmPreference preference = AlgorithmPreference.Auto)
{
var algorithm = Pick(seed, preference, s => new Murmur128_86(s), s => new Murmur128_64(s));
return(algorithm as Murmur128);
}
public static Murmur128 Create128(uint seed = 0, bool managed = true, AlgorithmPreference preference = AlgorithmPreference.Auto)
{
var algorithm = managed
? Pick(seed, preference, s => new Murmur128ManagedX86(s), s => new Murmur128ManagedX64(s))
: Pick(seed, preference, s => new Murmur128UnmanagedX86(s), s => new Murmur128UnmanagedX64(s));
return(algorithm as Murmur128);
}
// ReSharper disable UnusedMember.Global
public static Murmur128 Create128(uint seed = 0, bool managed = true,
AlgorithmPreference preference = AlgorithmPreference.Auto)
// ReSharper restore UnusedMember.Global
{
var algorithm = managed
? Pick(seed, preference, s => new Murmur128ManagedX86(s), s => new Murmur128ManagedX64(s))
: Pick(seed, preference, s => new Murmur128UnmanagedX86(s), s => new Murmur128UnmanagedX64(s));
return(algorithm as Murmur128);
}
private static HashAlgorithm Pick<T32, T64>(uint seed, AlgorithmPreference preference, Func<uint, T32> factory32, Func<uint, T64> factory64)
where T32 : HashAlgorithm
where T64 : HashAlgorithm
{
switch (preference)
{
case AlgorithmPreference.X64: return factory64(seed);
case AlgorithmPreference.X86: return factory32(seed);
default:
{
if (Is64BitProcess())
return factory64(seed);
return factory32(seed);
}
}
}
public MurmurOutputStream(Stream underlyingStream, uint seed = 0, bool managed = true, AlgorithmType type = AlgorithmType.Murmur128, AlgorithmPreference preference = AlgorithmPreference.Auto)
{
UnderlyingStream = underlyingStream;
Algorithm = type == AlgorithmType.Murmur32
? (HashAlgorithm)MurmurHash.Create32(seed, managed)
: (HashAlgorithm)MurmurHash.Create128(seed, managed, preference);
}
