/**
* This adds a pixel function to the global list of available pixel
* functions for derived bands.
*
* This is the same as the c function GDALAddDerivedBandPixelFunc()
*
* @param pszFuncName Name used to access pixel function
* @param pfnNewFunction Pixel function associated with name. An
* existing pixel function registered with the same name will be
* replaced with the new one.
*
* @return CE_None, invalid (NULL) parameters are currently ignored.
*/
CPLErr VRTDerivedRasterBand::AddPixelFunction
(const char *pszFuncName, GDALDerivedPixelFunc pfnNewFunction)
{
return GDALAddDerivedBandPixelFunc(pszFuncName, pfnNewFunction);
}
/**
* This adds a default set of pixel functions to the global list of
* available pixel functions for derived bands:
*
* - "real": extract real part from a single raster band (just a copy if the
* input is non-complex)
* - "imag": extract imaginary part from a single raster band (0 for
* non-complex)
* - "complex": make a complex band merging two bands used as real and
* imag values
* - "mod": extract module from a single raster band (real or complex)
* - "phase": extract phase from a single raster band (0 for non-complex)
* - "conj": computes the complex conjugate of a single raster band (just a
* copy if the input is non-complex)
* - "sum": sum 2 or more raster bands
* - "diff": computes the difference between 2 raster bands (b1 - b2)
* - "mul": multilpy 2 or more raster bands
* - "cmul": multiply the first band for the complex conjugate of the second
* - "inv": inverse (1./x). Note: no check is performed on zero division
* - "intensity": computes the intensity Re(x*conj(x)) of a single raster band
* (real or complex)
* - "sqrt": perform the square root of a single raster band (real only)
* - "log10": compute the logarithm (base 10) of the abs of a single raster
* band (real or complex): log10( abs( x ) )
* - "dB2amp": perform scale conversion from logarithmic to linear
* (amplitude) (i.e. 10 ^ ( x / 20 ) ) of a single raster
* band (real only)
* - "dB2pow": perform scale conversion from logarithmic to linear
* (power) (i.e. 10 ^ ( x / 10 ) ) of a single raster
* band (real only)
*
* @see GDALAddDerivedBandPixelFunc
*
* @return CE_None, invalid (NULL) parameters are currently ignored.
*/
CPLErr CPL_STDCALL GDALRegisterDefaultPixelFunc()
{
GDALAddDerivedBandPixelFunc("real", RealPixelFunc);
GDALAddDerivedBandPixelFunc("imag", ImagPixelFunc);
GDALAddDerivedBandPixelFunc("complex", ComplexPixelFunc);
GDALAddDerivedBandPixelFunc("mod", ModulePixelFunc);
GDALAddDerivedBandPixelFunc("phase", PhasePixelFunc);
GDALAddDerivedBandPixelFunc("conj", ConjPixelFunc);
GDALAddDerivedBandPixelFunc("sum", SumPixelFunc);
GDALAddDerivedBandPixelFunc("diff", DiffPixelFunc);
GDALAddDerivedBandPixelFunc("mul", MulPixelFunc);
GDALAddDerivedBandPixelFunc("cmul", CMulPixelFunc);
GDALAddDerivedBandPixelFunc("inv", InvPixelFunc);
GDALAddDerivedBandPixelFunc("intensity", IntensityPixelFunc);
GDALAddDerivedBandPixelFunc("sqrt", SqrtPixelFunc);
GDALAddDerivedBandPixelFunc("log10", Log10PixelFunc);
GDALAddDerivedBandPixelFunc("dB2amp", dB2AmpPixelFunc);
GDALAddDerivedBandPixelFunc("dB2pow", dB2PowPixelFunc);
return CE_None;
}
