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));
}
public byte[] Encode(string text)
{
var len = text.Length * 7 + 24;
var writer = new BitWriter(len);
writer.WriteByte(2);
writer.WriteInt(text.Length, 16);
for (int i = 0; i < text.Length; i++)
{
var b = Convert.ToByte(text[i]);
writer.WriteByte(b, 7);
}
return(writer.GetBytes());
}
public byte[] Encode(string text)
{
text = text.ToUpper();
var len = text.Length * 6 + 24;
var writer = new BitWriter(len);
writer.WriteByte(2);
writer.WriteInt(text.Length, 16);
for (int i = 0; i < text.Length; i++)
{
var index = GetChar6Index(text[i]);
writer.WriteInt(index, 6);
}
return(writer.GetBytes());
}
public void GetBytes_Works_When_MoreThan64Bits()
{
/* There are 12 entries,
* and we will Write them together in groups of 4.
* In total, 96 bits, forcing the Writer to make 2 BinaryNumber
* The bytes from GetBytes should match perfectly with these
*/
byte[] input = new byte[]
{
12, 0, 157, 212,
255, 2, 42, 128,
188, 200, 10, 32
};
BitWriter writer = new BitWriter();
for (int i = 0; i < input.Length; i += 4)
{
writer.Write(BitConverter.ToUInt32(input, i));
}
Assert.AreEqual(input, writer.GetBytes());
}
/// <summary>
/// Compresses and writes booleans to writer
/// </summary>
/// <param name="w"></param>
/// <param name="values"></param>
private void CompressBooleanTrack(BinaryWriter w, IList <object> values)
{
// Compressed Header
w.Write((short)0x04);
w.Write((short)0);
w.Write((short)0x20); // default values offset
w.Write((short)1); // bits per entry
w.Write(0x21); // compressed data start
w.Write(values.Count); // frame count
w.Write(0); // all 0s for booleans
w.Write(0);
w.Write(0);
w.Write(0);
BitWriter bitWriter = new BitWriter();
foreach (bool b in values)
{
bitWriter.WriteBits(b ? 1 : 0, 1);
}
w.Write(bitWriter.GetBytes());
}
public byte[] GetBytes()
{
return(_writer.GetBytes());
}
/// <summary>
/// Compresses <see cref="AnimTrackTransform" track and writes to writer/>
/// </summary>
/// <param name="w"></param>
/// <param name="values"></param>
private void CompressTransformTracks(BinaryWriter w, IList <object> values)
{
Quantanizer SX = new Quantanizer();
Quantanizer SY = new Quantanizer();
Quantanizer SZ = new Quantanizer();
Quantanizer RX = new Quantanizer();
Quantanizer RY = new Quantanizer();
Quantanizer RZ = new Quantanizer();
Quantanizer X = new Quantanizer();
Quantanizer Y = new Quantanizer();
Quantanizer Z = new Quantanizer();
// pre-process
foreach (AnimTrackTransform transform in values)
{
SX.Add(transform.SX);
SY.Add(transform.SY);
SZ.Add(transform.SZ);
RX.Add(transform.RX);
RY.Add(transform.RY);
RZ.Add(transform.RZ);
X.Add(transform.X);
Y.Add(transform.Y);
Z.Add(transform.Z);
}
short Flags = 0;
ushort BitsPerEntry = 0;
bool hasScale = (!SX.Constant || !SY.Constant || !SZ.Constant);
bool hasRotation = (!RX.Constant || !RY.Constant || !RZ.Constant);
bool hasPosition = (!X.Constant || !Y.Constant || !Z.Constant);
if (!hasScale)
{
Flags |= 0x02;
}
else
{
BitsPerEntry += (ushort)((SX.Constant ? 0 : SX.GetBitCount(Epsilon)) + (SY.Constant ? 0 : SY.GetBitCount(Epsilon)) + (SZ.Constant ? 0 : SZ.GetBitCount(Epsilon)));
Flags |= 0x01;
}
if (hasRotation)
{
BitsPerEntry += (ushort)((RX.Constant ? 0 : RX.GetBitCount(Epsilon)) + (RY.Constant ? 0 : RY.GetBitCount(Epsilon)) + (RZ.Constant ? 0 : RZ.GetBitCount(Epsilon)) + 1); // the 1 is for extra w rotation bit
Flags |= 0x04;
}
if (hasPosition)
{
BitsPerEntry += (ushort)((X.Constant ? 0 : X.GetBitCount(Epsilon)) + (Y.Constant ? 0 : Y.GetBitCount(Epsilon)) + (Z.Constant ? 0 : Z.GetBitCount(Epsilon)));
Flags |= 0x08;
}
// Compressed Header
w.Write((short)0x04);
w.Write(Flags);
w.Write((short)(0x10 + 0x10 * 9)); // default values offset
w.Write(BitsPerEntry);
w.Write(0x10 + 0x10 * 9 + sizeof(float) * 11); // compressed data start
w.Write(values.Count); // frame count
// write chunks
w.Write(SX.Min); w.Write(SX.Max); w.Write((long)SX.GetBitCount(Epsilon));
w.Write(SY.Min); w.Write(SY.Max); w.Write((long)SY.GetBitCount(Epsilon));
w.Write(SZ.Min); w.Write(SZ.Max); w.Write((long)SZ.GetBitCount(Epsilon));
w.Write(RX.Min); w.Write(RX.Max); w.Write((long)RX.GetBitCount(Epsilon));
w.Write(RY.Min); w.Write(RY.Max); w.Write((long)RY.GetBitCount(Epsilon));
w.Write(RZ.Min); w.Write(RZ.Max); w.Write((long)RZ.GetBitCount(Epsilon));
w.Write(X.Min); w.Write(X.Max); w.Write((long)X.GetBitCount(Epsilon));
w.Write(Y.Min); w.Write(Y.Max); w.Write((long)Y.GetBitCount(Epsilon));
w.Write(Z.Min); w.Write(Z.Max); w.Write((long)Z.GetBitCount(Epsilon));
// write default values
AnimTrackTransform defaultValue = (AnimTrackTransform)values[0];
w.Write(defaultValue.SX);
w.Write(defaultValue.SY);
w.Write(defaultValue.SZ);
w.Write(defaultValue.RX);
w.Write(defaultValue.RY);
w.Write(defaultValue.RZ);
w.Write(defaultValue.RW);
w.Write(defaultValue.X);
w.Write(defaultValue.Y);
w.Write(defaultValue.Z);
w.Write(0);
// write compressed values
BitWriter writer = new BitWriter();
foreach (AnimTrackTransform transform in values)
{
if (hasScale)
{
writer.WriteBits(SX.GetQuantanizedValue(transform.SX), SX.GetBitCount(Epsilon));
writer.WriteBits(SY.GetQuantanizedValue(transform.SY), SY.GetBitCount(Epsilon));
writer.WriteBits(SZ.GetQuantanizedValue(transform.SZ), SZ.GetBitCount(Epsilon));
}
if (hasRotation)
{
writer.WriteBits(RX.GetQuantanizedValue(transform.RX), RX.GetBitCount(Epsilon));
writer.WriteBits(RY.GetQuantanizedValue(transform.RY), RY.GetBitCount(Epsilon));
writer.WriteBits(RZ.GetQuantanizedValue(transform.RZ), RZ.GetBitCount(Epsilon));
}
if (hasPosition)
{
writer.WriteBits(X.GetQuantanizedValue(transform.X), X.GetBitCount(Epsilon));
writer.WriteBits(Y.GetQuantanizedValue(transform.Y), Y.GetBitCount(Epsilon));
writer.WriteBits(Z.GetQuantanizedValue(transform.Z), Z.GetBitCount(Epsilon));
}
if (hasRotation)
{
// flip w bit
float calculateW = (float)Math.Sqrt(Math.Abs(1 - (
RX.DecompressedValue(transform.RX) * RX.DecompressedValue(transform.RX) +
RY.DecompressedValue(transform.RY) * RY.DecompressedValue(transform.RY) +
RZ.DecompressedValue(transform.RZ) * RZ.DecompressedValue(transform.RZ))));
writer.WriteBits(Math.Sign((int)transform.RW) != Math.Sign((int)calculateW) ? 1 : 0, 1);
}
}
w.Write(writer.GetBytes());
}
/// <summary>
/// Compresses <see cref="AnimTrackTransform"></see> track and writes to writer
/// </summary>
/// <param name="w"></param>
/// <param name="values"></param>
private void CompressTransformTracks(BinaryWriter w, IList <object> values)
{
Quantanizer sx = new Quantanizer();
Quantanizer sy = new Quantanizer();
Quantanizer sz = new Quantanizer();
Quantanizer rx = new Quantanizer();
Quantanizer ry = new Quantanizer();
Quantanizer rz = new Quantanizer();
Quantanizer x = new Quantanizer();
Quantanizer y = new Quantanizer();
Quantanizer z = new Quantanizer();
// pre-process
foreach (AnimTrackTransform transform in values)
{
sx.Add(transform.Sx);
sy.Add(transform.Sy);
sz.Add(transform.Sz);
rx.Add(transform.Rx);
ry.Add(transform.Ry);
rz.Add(transform.Rz);
x.Add(transform.X);
y.Add(transform.Y);
z.Add(transform.Z);
}
short flags = 0;
ushort bitsPerEntry = 0;
bool hasScale = (!sx.Constant || !sy.Constant || !sz.Constant);
bool hasRotation = (!rx.Constant || !ry.Constant || !rz.Constant);
bool hasPosition = (!x.Constant || !y.Constant || !z.Constant);
if (sx.GetBitCount(epsilon) == -1 || sy.GetBitCount(epsilon) == -1 || (sz.GetBitCount(epsilon) == -1 || rx.GetBitCount(epsilon) == -1) || (ry.GetBitCount(epsilon) == -1 || rz.GetBitCount(epsilon) == -1 || (x.GetBitCount(epsilon) == -1 || y.GetBitCount(epsilon) == -1)) || z.GetBitCount(epsilon) == -1)
{
throw new Exception("Compression Level is too small to compress!");
}
if (!hasScale)
{
flags |= 0x02;
}
else
{
bitsPerEntry += (ushort)((sx.Constant ? 0 : sx.GetBitCount(epsilon)) + (sy.Constant ? 0 : sy.GetBitCount(epsilon)) + (sz.Constant ? 0 : sz.GetBitCount(epsilon)));
flags |= 0x01;
}
if (hasRotation)
{
bitsPerEntry += (ushort)((rx.Constant ? 0 : rx.GetBitCount(epsilon)) + (ry.Constant ? 0 : ry.GetBitCount(epsilon)) + (rz.Constant ? 0 : rz.GetBitCount(epsilon)) + 1); // the 1 is for extra w rotation bit
flags |= 0x04;
}
if (hasPosition)
{
bitsPerEntry += (ushort)((x.Constant ? 0 : x.GetBitCount(epsilon)) + (y.Constant ? 0 : y.GetBitCount(epsilon)) + (z.Constant ? 0 : z.GetBitCount(epsilon)));
flags |= 0x08;
}
// Compressed Header
w.Write((short)0x04);
w.Write(flags);
w.Write((short)160);
w.Write(bitsPerEntry);
w.Write(204);
w.Write(values.Count);
w.Write(sx.Min);
w.Write(sx.Max);
w.Write(hasScale ? sx.GetBitCount(epsilon) : 16L);
w.Write(sy.Min);
w.Write(sy.Max);
w.Write(hasScale ? sy.GetBitCount(epsilon) : 16L);
w.Write(sz.Min);
w.Write(sz.Max);
w.Write(hasScale ? sz.GetBitCount(epsilon) : 16L);
w.Write(rx.Min);
w.Write(rx.Max);
w.Write(hasRotation ? rx.GetBitCount(epsilon) : 16L);
w.Write(ry.Min);
w.Write(ry.Max);
w.Write(hasRotation ? ry.GetBitCount(epsilon) : 16L);
w.Write(rz.Min);
w.Write(rz.Max);
w.Write(hasRotation ? rz.GetBitCount(epsilon) : 16L);
w.Write(x.Min);
w.Write(x.Max);
w.Write(hasPosition ? x.GetBitCount(epsilon) : 16L);
w.Write(y.Min);
w.Write(y.Max);
w.Write(hasPosition ? y.GetBitCount(epsilon) : 16L);
w.Write(z.Min);
w.Write(z.Max);
w.Write(hasPosition ? z.GetBitCount(epsilon) : 16L);
AnimTrackTransform defaultValue = (AnimTrackTransform)values[0];
w.Write(defaultValue.Sx);
w.Write(defaultValue.Sy);
w.Write(defaultValue.Sz);
w.Write(defaultValue.Rx);
w.Write(defaultValue.Ry);
w.Write(defaultValue.Rz);
w.Write(defaultValue.Rw);
w.Write(defaultValue.X);
w.Write(defaultValue.Y);
w.Write(defaultValue.Z);
w.Write(0);
// write compressed values
BitWriter writer = new BitWriter();
foreach (AnimTrackTransform transform in values)
{
if (hasScale)
{
writer.WriteBits(sx.GetQuantanizedValue(transform.Sx), sx.GetBitCount(epsilon));
writer.WriteBits(sy.GetQuantanizedValue(transform.Sy), sy.GetBitCount(epsilon));
writer.WriteBits(sz.GetQuantanizedValue(transform.Sz), sz.GetBitCount(epsilon));
}
if (hasRotation)
{
writer.WriteBits(rx.GetQuantanizedValue(transform.Rx), rx.GetBitCount(epsilon));
writer.WriteBits(ry.GetQuantanizedValue(transform.Ry), ry.GetBitCount(epsilon));
writer.WriteBits(rz.GetQuantanizedValue(transform.Rz), rz.GetBitCount(epsilon));
}
if (hasPosition)
{
writer.WriteBits(x.GetQuantanizedValue(transform.X), x.GetBitCount(epsilon));
writer.WriteBits(y.GetQuantanizedValue(transform.Y), y.GetBitCount(epsilon));
writer.WriteBits(z.GetQuantanizedValue(transform.Z), z.GetBitCount(epsilon));
}
if (hasRotation)
{
// flip w bit
float calculateW = (float)Math.Sqrt(Math.Abs(1 - (
rx.DecompressedValue(transform.Rx) * rx.DecompressedValue(transform.Rx) +
ry.DecompressedValue(transform.Ry) * ry.DecompressedValue(transform.Ry) +
rz.DecompressedValue(transform.Rz) * rz.DecompressedValue(transform.Rz))));
writer.WriteBits(Math.Sign(transform.Rw) != Math.Sign(calculateW) ? 1 : 0, 1);
}
}
w.Write(writer.GetBytes());
}
/// <summary>
/// Compresses <see cref="AnimTrackTransform"></see> track and writes to writer
/// </summary>
/// <param name="w"></param>
/// <param name="values"></param>
private void CompressTransformTracks(BinaryWriter w, IList <object> values)
{
Quantanizer sx = new Quantanizer();
Quantanizer sy = new Quantanizer();
Quantanizer sz = new Quantanizer();
Quantanizer rx = new Quantanizer();
Quantanizer ry = new Quantanizer();
Quantanizer rz = new Quantanizer();
Quantanizer x = new Quantanizer();
Quantanizer y = new Quantanizer();
Quantanizer z = new Quantanizer();
// pre-process
foreach (AnimTrackTransform transform in values)
{
sx.Add(transform.Sx);
sy.Add(transform.Sy);
sz.Add(transform.Sz);
rx.Add(transform.Rx);
ry.Add(transform.Ry);
rz.Add(transform.Rz);
x.Add(transform.X);
y.Add(transform.Y);
z.Add(transform.Z);
}
short flags = 0;
ushort bitsPerEntry = 0;
bool hasScale = (!sx.Constant || !sy.Constant || !sz.Constant);
bool hasRotation = (!rx.Constant || !ry.Constant || !rz.Constant);
bool hasPosition = (!x.Constant || !y.Constant || !z.Constant);
if (!hasScale)
{
flags |= 0x02;
}
else
{
bitsPerEntry += (ushort)((sx.Constant ? 0 : sx.GetBitCount(epsilon)) + (sy.Constant ? 0 : sy.GetBitCount(epsilon)) + (sz.Constant ? 0 : sz.GetBitCount(epsilon)));
flags |= 0x01;
}
if (hasRotation)
{
bitsPerEntry += (ushort)((rx.Constant ? 0 : rx.GetBitCount(epsilon)) + (ry.Constant ? 0 : ry.GetBitCount(epsilon)) + (rz.Constant ? 0 : rz.GetBitCount(epsilon)) + 1); // the 1 is for extra w rotation bit
flags |= 0x04;
}
if (hasPosition)
{
bitsPerEntry += (ushort)((x.Constant ? 0 : x.GetBitCount(epsilon)) + (y.Constant ? 0 : y.GetBitCount(epsilon)) + (z.Constant ? 0 : z.GetBitCount(epsilon)));
flags |= 0x08;
}
// Compressed Header
w.Write((short)0x04);
w.Write(flags);
w.Write((short)(0x10 + 0x10 * 9)); // default values offset
w.Write(bitsPerEntry);
w.Write(0x10 + 0x10 * 9 + sizeof(float) * 11); // compressed data start
w.Write(values.Count); // frame count
// write chunks
w.Write(sx.Min); w.Write(sx.Max); w.Write((long)sx.GetBitCount(epsilon));
w.Write(sy.Min); w.Write(sy.Max); w.Write((long)sy.GetBitCount(epsilon));
w.Write(sz.Min); w.Write(sz.Max); w.Write((long)sz.GetBitCount(epsilon));
w.Write(rx.Min); w.Write(rx.Max); w.Write((long)rx.GetBitCount(epsilon));
w.Write(ry.Min); w.Write(ry.Max); w.Write((long)ry.GetBitCount(epsilon));
w.Write(rz.Min); w.Write(rz.Max); w.Write((long)rz.GetBitCount(epsilon));
w.Write(x.Min); w.Write(x.Max); w.Write((long)x.GetBitCount(epsilon));
w.Write(y.Min); w.Write(y.Max); w.Write((long)y.GetBitCount(epsilon));
w.Write(z.Min); w.Write(z.Max); w.Write((long)z.GetBitCount(epsilon));
// write default values
AnimTrackTransform defaultValue = (AnimTrackTransform)values[0];
w.Write(defaultValue.Sx);
w.Write(defaultValue.Sy);
w.Write(defaultValue.Sz);
w.Write(defaultValue.Rx);
w.Write(defaultValue.Ry);
w.Write(defaultValue.Rz);
w.Write(defaultValue.Rw);
w.Write(defaultValue.X);
w.Write(defaultValue.Y);
w.Write(defaultValue.Z);
w.Write(0);
// write compressed values
BitWriter writer = new BitWriter();
foreach (AnimTrackTransform transform in values)
{
if (hasScale)
{
writer.WriteBits(sx.GetQuantanizedValue(transform.Sx), sx.GetBitCount(epsilon));
writer.WriteBits(sy.GetQuantanizedValue(transform.Sy), sy.GetBitCount(epsilon));
writer.WriteBits(sz.GetQuantanizedValue(transform.Sz), sz.GetBitCount(epsilon));
}
if (hasRotation)
{
writer.WriteBits(rx.GetQuantanizedValue(transform.Rx), rx.GetBitCount(epsilon));
writer.WriteBits(ry.GetQuantanizedValue(transform.Ry), ry.GetBitCount(epsilon));
writer.WriteBits(rz.GetQuantanizedValue(transform.Rz), rz.GetBitCount(epsilon));
}
if (hasPosition)
{
writer.WriteBits(x.GetQuantanizedValue(transform.X), x.GetBitCount(epsilon));
writer.WriteBits(y.GetQuantanizedValue(transform.Y), y.GetBitCount(epsilon));
writer.WriteBits(z.GetQuantanizedValue(transform.Z), z.GetBitCount(epsilon));
}
if (hasRotation)
{
// flip w bit
float calculateW = (float)Math.Sqrt(Math.Abs(1 - (
rx.DecompressedValue(transform.Rx) * rx.DecompressedValue(transform.Rx) +
ry.DecompressedValue(transform.Ry) * ry.DecompressedValue(transform.Ry) +
rz.DecompressedValue(transform.Rz) * rz.DecompressedValue(transform.Rz))));
writer.WriteBits(Math.Sign((int)transform.Rw) != Math.Sign((int)calculateW) ? 1 : 0, 1);
}
}
w.Write(writer.GetBytes());
}
