/// <summary>
/// Decompresses buffer passed using LZF decompression algorithm.
/// </summary>
/// <param name="input">Input buffer to decompress.</param>
/// <param name="decompressedSize">Actual original decompressed size, if known. In case
/// size is not final, resizes output automatically.</param>
/// <returns>Decompressed buffer.</returns>
public static unsafe byte[] Decompress(NativeArray <byte> input, int decompressedSize = 0)
{
int inputCount = input.Length;
int outputCount = decompressedSize <= 0 ? input.Length << 1 : decompressedSize;
var output = new NativeArray <byte>(outputCount);
int finalCount = 0;
byte[] result = null;
try
{
finalCount = Decompress(input.GetPointer(), inputCount, output.GetPointer(), outputCount);
while (finalCount == 0)
{
output.Free();
outputCount <<= 1;
output = new NativeArray <byte>(outputCount);
finalCount = Decompress(input.GetPointer(), inputCount, output.GetPointer(), outputCount);
}
}
finally
{
result = new byte[finalCount];
if (finalCount > 0)
{
Marshal.Copy((IntPtr)output.GetPointer(), result, 0, finalCount);
}
output.Free();
}
return(result);
}
/// <summary>
/// Compresses buffer passed using LZF compression algorithm.
/// </summary>
/// <param name="input">Input buffer to compress.</param>
/// <returns>Compressed buffer.</returns>
public static unsafe byte[] Compress(byte[] input)
{
if (input == null || input.Length == 0)
return(new byte[0]);
fixed(byte *inputPtr = input)
{
int inputCount = input.Length;
int outputCount = input.Length << 1;
var output = new NativeArray <byte>(outputCount);
int finalCount = 0;
byte[] result = null;
try
{
finalCount = Compress(inputPtr, inputCount, output.GetPointer(), outputCount);
while (finalCount == 0)
{
output.Free();
outputCount <<= 1;
output = new NativeArray <byte>(outputCount);
finalCount = Compress(inputPtr, inputCount, output.GetPointer(), outputCount);
}
}
finally
{
result = new byte[finalCount];
if (finalCount > 0)
{
Marshal.Copy((IntPtr)output.GetPointer(), result, 0, finalCount);
}
output.Free();
}
return(result);
}
}
