public static void TransformFloat(float val, byte[] buffer, int index)
{
var floatBytes = EndianAwareBitConverter.GetBytes(val, Endianness.Big);
var intForm = (uint)EndianAwareBitConverter.ToInt32(floatBytes, Endianness.Big);
var transformedIntForm = (intForm << 1) | (intForm >> 31); // Rotate left 1 bit
var transformedBytes = EndianAwareBitConverter.GetBytes((int)transformedIntForm, Endianness.Big);
Array.Copy(transformedBytes, 0, buffer, index, sizeof(float));
}
public static float ReverseTransformFloat(byte[] buffer, int index)
{
var bytes = new byte[sizeof(float)];
Array.Copy(buffer, index, bytes, 0, sizeof(float));
var intForm = (uint)EndianAwareBitConverter.ToInt32(bytes, Endianness.Big);
var transformedIntForm = (intForm >> 1) | (intForm << 31); // Rotate right 1 bit
var transformedBytes = EndianAwareBitConverter.GetBytes((int)transformedIntForm, Endianness.Big);
return(EndianAwareBitConverter.ToSingle(transformedBytes, Endianness.Big));
}
public static byte[] TransformInt32Array(int[] data)
{
var bytes = new byte[data.Length * sizeof(int)];
for (var i = 0; i < data.Length; i++)
{
var transformed = TransformInt32(data[i]);
var valueBytes = EndianAwareBitConverter.GetBytes(transformed, Endianness.Big);
Array.Copy(valueBytes, 0, bytes, i * sizeof(int), sizeof(int));
}
var interleaved = InterleaveBytes(bytes, sizeof(int));
return(interleaved);
}
public static void WriteReferentArray(EndianAwareBinaryWriter writer, int[] values)
{
var bytes = new byte[values.Length * sizeof(int)];
var last = 0;
for (var i = 0; i < values.Length; i++)
{
var val = values[i] - last;
var transformed = TransformInt32(val);
var valBytes = EndianAwareBitConverter.GetBytes(transformed, Endianness.Big);
last = values[i];
Array.Copy(valBytes, 0, bytes, i * sizeof(int), sizeof(int));
}
var interleaved = InterleaveBytes(bytes, sizeof(int));
writer.WriteBytes(interleaved);
}
public static int[] ReadReferentArray(EndianAwareBinaryReader reader, int count)
{
var values = new int[count];
var bytes = reader.ReadBytes(count * sizeof(int));
var deinterleaved = DeinterleaveBytes(bytes, sizeof(int));
var last = 0;
var buffer = new byte[sizeof(int)];
for (var i = 0; i < count; i++)
{
Array.Copy(deinterleaved, i * sizeof(int), buffer, 0, sizeof(int));
var value = EndianAwareBitConverter.ToInt32(buffer, Endianness.Big);
value = ReverseTransformInt32(value);
value += last;
values[i] = value;
last = value;
}
return(values);
}
public static int[] ReverseTransformInt32Array(byte[] data)
{
if (data.Length % sizeof(int) != 0)
{
throw new ArgumentException("Invalid interleaved data. Data length must be a multiple of 4 bytes.");
}
var valueCount = data.Length / sizeof(int);
var values = new int[valueCount];
var buffer = new byte[sizeof(int)];
var deinterleavedData = DeinterleaveBytes(data, sizeof(int));
for (var i = 0; i < valueCount; i++)
{
Array.Copy(deinterleavedData, i * sizeof(int), buffer, 0, sizeof(int));
var transformedValue = EndianAwareBitConverter.ToInt32(buffer, Endianness.Big);
values[i] = ReverseTransformInt32(transformedValue);
}
return(values);
}
public EndianAwareBinaryWriter(Stream output, System.Text.Encoding encoding, bool littleEndian)
: base(output, encoding)
{
bitConverter = new EndianAwareBitConverter (littleEndian);
}
public EndianAwareBinaryWriter(Stream output, bool littleEndian)
: base(output)
{
bitConverter = new EndianAwareBitConverter (littleEndian);
}
public static void WriteEnumerationArray(EndianAwareBinaryWriter writer, int[] values)
{
WriteInterleavedPropertyDataHelper(writer, values, sizeof(int), val => EndianAwareBitConverter.GetBytes(val, Endianness.Big));
}
public static void WriteBrickColorArray(EndianAwareBinaryWriter writer, BrickColor[] values)
{
WriteInterleavedPropertyDataHelper(writer, values, sizeof(int), val => EndianAwareBitConverter.GetBytes((int)val, Endianness.Big));
}
public static int[] ReadEnumerationArray(EndianAwareBinaryReader reader, int count)
{
return(ReadInterleavedPropertyDataArrayHelper(reader, count, sizeof(int), bytes => EndianAwareBitConverter.ToInt32(bytes, Endianness.Big)));
}
public static BrickColor[] ReadBrickColorArray(EndianAwareBinaryReader reader, int count)
{
return(ReadInterleavedPropertyDataArrayHelper(reader, count, sizeof(int), bytes => (BrickColor)EndianAwareBitConverter.ToInt32(bytes, Endianness.Big)));
}
