public virtual void TestCalculateChunkedSumsFail()
{
AllocateDirectByteBuffers();
FillDataAndInvalidChecksums();
NativeCrc32.CalculateChunkedSums(bytesPerChecksum, checksumType.id, checksums, data
);
}
/// <summary>Calculate checksums for the given data.</summary>
/// <remarks>
/// Calculate checksums for the given data.
/// The 'mark' of the ByteBuffer parameters may be modified by this function,
/// but the position is maintained.
/// </remarks>
/// <param name="data">the DirectByteBuffer pointing to the data to checksum.</param>
/// <param name="checksums">
/// the DirectByteBuffer into which checksums will be
/// stored. Enough space must be available in this
/// buffer to put the checksums.
/// </param>
public virtual void CalculateChunkedSums(ByteBuffer data, ByteBuffer checksums)
{
if (type.size == 0)
{
return;
}
if (data.HasArray() && checksums.HasArray())
{
CalculateChunkedSums(((byte[])data.Array()), data.ArrayOffset() + data.Position()
, data.Remaining(), ((byte[])checksums.Array()), checksums.ArrayOffset() + checksums
.Position());
return;
}
if (NativeCrc32.IsAvailable())
{
NativeCrc32.CalculateChunkedSums(bytesPerChecksum, type.id, checksums, data);
return;
}
data.Mark();
checksums.Mark();
try
{
byte[] buf = new byte[bytesPerChecksum];
while (data.Remaining() > 0)
{
int n = Math.Min(data.Remaining(), bytesPerChecksum);
data.Get(buf, 0, n);
summer.Reset();
summer.Update(buf, 0, n);
checksums.PutInt((int)summer.GetValue());
}
}
finally
{
data.Reset();
checksums.Reset();
}
}
