/// <summary>
/// Convenience function for decoding binary data encoded by MSNumpress.
/// </summary>
/// <param name="cvAccession">The PSI-MS obo CV accession of the encoded data.</param>
/// <param name="data">array of byte to be decoded.</param>
/// <param name="dataSize">number of bytes from data to decode.</param>
/// <returns>The decoded doubles</returns>
/// <exception cref="ArgumentException">
/// Cannot decode numLin data, need at least 8 initial bytes for fixed point.
/// or
/// Corrupt numLin data!
/// or
/// Cannot decode numPic data, need at least 8 initial bytes for fixed point.
/// or
/// Corrupt numPic data!
/// or
/// '" + cvAccession + "' is not a numpress compression term
/// </exception>
/// <remarks>
/// If the passed cvAccession is one of
///
/// ACC_NUMPRESS_LINEAR = "MS:1002312"
/// ACC_NUMPRESS_PIC = "MS:1002313"
/// ACC_NUMPRESS_SLOF = "MS:1002314"
///
/// the corresponding decode function will be called.
/// </remarks>
public static double[] decode(string cvAccession, byte[] data, int dataSize)
{
if (cvAccession == ACC_NUMPRESS_LINEAR)
{
if (dataSize < 8 || data.Length < 8)
{
throw new ArgumentException("Cannot decode numLin data, need at least 8 initial bytes for fixed point.");
}
double[] buffer = new double[dataSize * 2];
int nbrOfDoubles = MSNumpress.decodeLinear(data, dataSize, buffer);
if (nbrOfDoubles < 0)
{
throw new ArgumentException("Corrupt numLin data!");
}
double[] result = new double[nbrOfDoubles];
Array.Copy(buffer, 0, result, 0, nbrOfDoubles);
return(result);
}
if (cvAccession == ACC_NUMPRESS_SLOF)
{
double[] result = new double[(dataSize - 8) / 2];
MSNumpress.decodeSlof(data, dataSize, result);
return(result);
}
if (cvAccession == ACC_NUMPRESS_PIC)
{
if (dataSize < 8 || data.Length < 8)
{
throw new ArgumentException("Cannot decode numPic data, need at least 8 initial bytes for fixed point.");
}
double[] buffer = new double[dataSize * 2];
int nbrOfDoubles = MSNumpress.decodePic(data, dataSize, buffer);
if (nbrOfDoubles < 0)
{
throw new ArgumentException("Corrupt numPic data!");
}
double[] result = new double[nbrOfDoubles];
Array.Copy(buffer, 0, result, 0, nbrOfDoubles);
return(result);
}
throw new ArgumentException("'" + cvAccession + "' is not a numpress compression term");
}
/// <summary>
/// Convenience function for encoding floating point data using MSNumpress.
/// </summary>
/// <param name="cvAccession">The PSI-MS obo CV accession to use to encode the data.</param>
/// <param name="data">array of double to be encoded.</param>
/// <param name="dataSize">number of doubles from data to encode.</param>
/// <returns></returns>
/// <exception cref="System.ArgumentException">
/// Corrupt numLin data!
/// or
/// Corrupt numPic data!
/// or
/// '" + cvAccession + "' is not a numpress compression term
/// </exception>
public static byte[] encode(string cvAccession, double[] data, int dataSize)
{
if (cvAccession == ACC_NUMPRESS_LINEAR)
{
byte[] buffer = new byte[dataSize * 5 + 8];
double fixedPoint = MSNumpress.optimalLinearFixedPoint(data, dataSize);
int nbrOfBytes = MSNumpress.encodeLinear(data, dataSize, buffer, fixedPoint);
if (nbrOfBytes < 0)
{
throw new ArgumentException("Corrupt numLin data!");
}
byte[] result = new byte[nbrOfBytes];
Array.Copy(buffer, 0, result, 0, nbrOfBytes);
return(result);
}
if (cvAccession == ACC_NUMPRESS_SLOF)
{
double fixedPoint = MSNumpress.optimalSlofFixedPoint(data, dataSize);
byte[] result = new byte[dataSize * 2 + 8];
int nbrOfBytes = MSNumpress.encodeSlof(data, dataSize, result, fixedPoint);
return(result);
}
if (cvAccession == ACC_NUMPRESS_PIC)
{
byte[] buffer = new byte[dataSize * 5];
int nbrOfBytes = MSNumpress.encodePic(data, dataSize, buffer);
if (nbrOfBytes < 0)
{
throw new ArgumentException("Corrupt numPic data!");
}
byte[] result = new byte[nbrOfBytes];
Array.Copy(buffer, 0, result, 0, nbrOfBytes);
return(result);
}
throw new ArgumentException("'" + cvAccession + "' is not a numpress compression term");
}
