public V0Header(int cookie, ByteBuffer buffer)
{
Cookie = cookie;
NumberOfSignificantValueDigits = buffer.GetInt();
LowestTrackableUnitValue = buffer.GetLong();
HighestTrackableValue = buffer.GetLong();
PayloadLengthInBytes = int.MaxValue;
IntegerToDoubleValueConversionRatio = 1.0;
NormalizingIndexOffset = 0;
}
protected override long ReadValue(ByteBuffer sourceBuffer)
{
return sourceBuffer.GetLong();
}
/// <summary>
/// Reads an LEB128-64b9B ZigZag encoded 64 bit integer (<see cref="long"/>) value from the given buffer.
/// </summary>
/// <param name="buffer">The buffer to read from.</param>
/// <returns>The value read from the buffer.</returns>
public static long GetLong(ByteBuffer buffer)
{
long v = buffer.Get();
long value = v & 0x7F;
if ((v & 0x80) != 0)
{
v = buffer.Get();
value |= (v & 0x7F) << 7;
if ((v & 0x80) != 0)
{
v = buffer.Get();
value |= (v & 0x7F) << 14;
if ((v & 0x80) != 0)
{
v = buffer.Get();
value |= (v & 0x7F) << 21;
if ((v & 0x80) != 0)
{
v = buffer.Get();
value |= (v & 0x7F) << 28;
if ((v & 0x80) != 0)
{
v = buffer.Get();
value |= (v & 0x7F) << 35;
if ((v & 0x80) != 0)
{
v = buffer.Get();
value |= (v & 0x7F) << 42;
if ((v & 0x80) != 0)
{
v = buffer.Get();
value |= (v & 0x7F) << 49;
if ((v & 0x80) != 0)
{
v = buffer.Get();
value |= v << 56;
}
}
}
}
}
}
}
}
var unsignRightShiftedValue = (long)((ulong)value >> 1);
value = unsignRightShiftedValue ^ (-(value & 1));
return value;
}
/// <summary>
/// Writes a 64 bit integer (<see cref="long"/>) value to the given buffer in LEB128-64b9B-variant ZigZag encoded format.
/// </summary>
/// <param name="buffer">The buffer to write to.</param>
/// <param name="value">The value to write to the buffer.</param>
public static void PutLong(ByteBuffer buffer, long value)
{
value = (value << 1) ^ (value >> 63);
if (value >> 7 == 0)
{
buffer.Put((byte)value);
}
else {
buffer.Put((byte)((value & 0x7F) | 0x80));
if (value >> 14 == 0)
{
buffer.Put((byte)(value >> 7));
}
else {
buffer.Put((byte)(value >> 7 | 0x80));
if (value >> 21 == 0)
{
buffer.Put((byte)(value >> 14));
}
else {
buffer.Put((byte)(value >> 14 | 0x80));
if (value >> 28 == 0)
{
buffer.Put((byte)(value >> 21));
}
else {
buffer.Put((byte)(value >> 21 | 0x80));
if (value >> 35 == 0)
{
buffer.Put((byte)(value >> 28));
}
else {
buffer.Put((byte)(value >> 28 | 0x80));
if (value >> 42 == 0)
{
buffer.Put((byte)(value >> 35));
}
else {
buffer.Put((byte)(value >> 35 | 0x80));
if (value >> 49 == 0)
{
buffer.Put((byte)(value >> 42));
}
else {
buffer.Put((byte)(value >> 42 | 0x80));
if (value >> 56 == 0)
{
buffer.Put((byte)(value >> 49));
}
else {
buffer.Put((byte)(value >> 49 | 0x80));
buffer.Put((byte)(value >> 56));
}
}
}
}
}
}
}
}
}
