protected override BitStream InternalValueToBitStream()
{
ulong bits;
dynamic value = GetNumber(InternalValue);
if (value > 0 && (ulong)value > MaxValue)
{
string msg = string.Format("Error, {0} value '{1}' is greater than the maximum {2}-bit {3} number.", debugName, value, lengthAsBits, Signed ? "signed" : "unsigned");
var inner = new OverflowException(msg);
throw new SoftException(inner);
}
if (value < 0 && (long)value < MinValue)
{
string msg = string.Format("Error, {0} value '{1}' is less than the minimum {2}-bit {3} number.", debugName, value, lengthAsBits, Signed ? "signed" : "unsigned");
var inner = new OverflowException(msg);
throw new SoftException(inner);
}
if (LittleEndian)
{
bits = LittleBitWriter.GetBits(value, (int)lengthAsBits);
}
else
{
bits = BigBitWriter.GetBits(value, (int)lengthAsBits);
}
var bs = new BitStream();
bs.WriteBits(bits, (int)lengthAsBits);
return(bs);
}
private dynamic FromBitstream(BitStream bs)
{
ulong bits = bs.ReadBits((int)lengthAsBits);
if (Signed)
{
if (LittleEndian)
{
return(LittleBitWriter.GetInt64(bits, (int)lengthAsBits));
}
else
{
return(BigBitWriter.GetInt64(bits, (int)lengthAsBits));
}
}
else
{
if (LittleEndian)
{
return(LittleBitWriter.GetUInt64(bits, (int)lengthAsBits));
}
else
{
return(BigBitWriter.GetUInt64(bits, (int)lengthAsBits));
}
}
}
public void BitConverter()
{
/*
* Unsigned, BE, 12bit "A B C" -> 0x0ABC -> 2748
* Signed , BE, 12bit "A B C" -> 0xFABC -> -1348
* Unsigned, LE, 12bit "B C A" -> 0x0ABC -> 2748
* Signed , LE, 12bit "B C A" -> 0xFABC -> -1348
*/
byte[] val = null;
val = BitWriter <BigEndian> .GetBytes(0xABC, 0);
Assert.AreEqual(new byte[] { }, val);
Assert.AreEqual(0, BigBitWriter.GetUInt64(val, 0));
Assert.AreEqual(0, BigBitWriter.GetInt64(val, 0));
val = BitWriter <BigEndian> .GetBytes(0xABC, 12);
Assert.AreEqual(new byte[] { 0xab, 0xc0 }, val);
Assert.AreEqual(2748, BigBitWriter.GetUInt64(val, 12));
Assert.AreEqual(-1348, BigBitWriter.GetInt64(val, 12));
val = BitWriter <LittleEndian> .GetBytes(0xABC, 0);
Assert.AreEqual(new byte[] { }, val);
Assert.AreEqual(0, LittleBitWriter.GetUInt64(val, 0));
Assert.AreEqual(0, LittleBitWriter.GetInt64(val, 0));
val = BitWriter <LittleEndian> .GetBytes(0xABC, 12);
Assert.AreEqual(new byte[] { 0xbc, 0xa0 }, val);
Assert.AreEqual(2748, LittleBitWriter.GetUInt64(val, 12));
Assert.AreEqual(-1348, LittleBitWriter.GetInt64(val, 12));
ulong bits = 0;
bits = BitWriter <BigEndian> .GetBits(0xABC, 12);
Assert.AreEqual(0xABC, bits);
Assert.AreEqual(2748, BigBitWriter.GetUInt64(bits, 12));
Assert.AreEqual(-1348, BigBitWriter.GetInt64(bits, 12));
bits = BitWriter <LittleEndian> .GetBits(0xABC, 12);
Assert.AreEqual(0xBCA, bits);
Assert.AreEqual(2748, LittleBitWriter.GetUInt64(bits, 12));
Assert.AreEqual(-1348, LittleBitWriter.GetInt64(bits, 12));
}
