/// <summary>Implementation of chunked calculation specifically on byte arrays.</summary>
/// <remarks>
/// Implementation of chunked calculation specifically on byte arrays. This
/// is to avoid the copy when dealing with ByteBuffers that have array backing.
/// </remarks>
public virtual void CalculateChunkedSums(byte[] data, int dataOffset, int dataLength
, byte[] sums, int sumsOffset)
{
if (type.size == 0)
{
return;
}
if (NativeCrc32.IsAvailable())
{
NativeCrc32.CalculateChunkedSumsByteArray(bytesPerChecksum, type.id, sums, sumsOffset
, data, dataOffset, dataLength);
return;
}
int remaining = dataLength;
while (remaining > 0)
{
int n = Math.Min(remaining, bytesPerChecksum);
summer.Reset();
summer.Update(data, dataOffset, n);
dataOffset += n;
remaining -= n;
long calculated = summer.GetValue();
sums[sumsOffset++] = unchecked ((byte)(calculated >> 24));
sums[sumsOffset++] = unchecked ((byte)(calculated >> 16));
sums[sumsOffset++] = unchecked ((byte)(calculated >> 8));
sums[sumsOffset++] = unchecked ((byte)(calculated));
}
}
public virtual void TestCalculateChunkedSumsByteArrayFail()
{
AllocateArrayByteBuffers();
FillDataAndInvalidChecksums();
NativeCrc32.CalculateChunkedSumsByteArray(bytesPerChecksum, checksumType.id, ((byte
[])checksums.Array()), checksums.Position(), ((byte[])data.Array()), data.Position
(), data.Remaining());
}
