Alex Harker
79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
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#include "FrameLib_Percentile.h"
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#include "FrameLib_Sort_Functions.h"
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// Constructor
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FrameLib_Percentile::FrameLib_Percentile(FrameLib_Context context, FrameLib_Parameters::Serial *serialisedParameters, FrameLib_Proxy *proxy) : FrameLib_Processor(context, proxy, &sParamInfo, 2, 1)
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{
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mParameters.addDouble(kPercentile, "percentile", 50.0, 0);
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mParameters.setClip(0.0, 100.0);
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mParameters.set(serialisedParameters);
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setParameterInput(1);
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}
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// Info
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std::string FrameLib_Percentile::objectInfo(bool verbose)
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{
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return formatInfo("Calculates any percentile (for example the median at 50%) of an input frame: The output is a single value.",
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"Calculates any percentile (for example the median at 50%) of an input frame.", verbose);
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}
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std::string FrameLib_Percentile::inputInfo(unsigned long idx, bool verbose)
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{
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if (idx)
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return parameterInputInfo(verbose);
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else
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return "Input Frame";
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}
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std::string FrameLib_Percentile::outputInfo(unsigned long idx, bool verbose)
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{
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return "Percentile Output Value";
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}
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// Parameter Info
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FrameLib_Percentile::ParameterInfo FrameLib_Percentile::sParamInfo;
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FrameLib_Percentile::ParameterInfo::ParameterInfo()
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{
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add("Sets the percentile to calculate [0-100].");
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}
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// Process
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void FrameLib_Percentile::process()
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{
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unsigned long sizeIn, sizeOut;
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const double *input = getInput(0, &sizeIn);
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requestOutputSize(0, sizeIn ? 1 : 0);
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allocateOutputs();
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double *output = getOutput(0, &sizeOut);
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double *temp = alloc<double>(sizeIn + 1);
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if (sizeOut && temp)
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{
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sortAscending(temp, input, sizeIn);
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// Copy last value
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temp[sizeIn] = temp[sizeIn - 1];
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// Linearly interpolate output
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double position = (mParameters.getValue(kPercentile) * (sizeIn - 1) / 100.0);
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unsigned long idx = truncToUInt(position);
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double fract = position - idx;
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output[0] = temp[idx] + fract * (temp[idx + 1] - temp[idx]);
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}
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dealloc(temp);
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}
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