Mesen-SX/Utilities/HermiteResampler.h
Sour 206214ce2b Audio: Replace blip_buf usage with a hermite interpolation resampler
Improves sound - blip_buf was altering the audio output quite a bit compared to the DSP's raw output
2020-02-29 15:58:11 -05:00

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C++

#pragma once
#include "stdafx.h"
class HermiteResampler
{
private:
double _prevLeft[4] = {};
double _prevRight[4] = {};
double _rateRatio = 1.0;
double _fraction = 0.0;
__forceinline int16_t HermiteInterpolate(double values[4], double mu);
__forceinline void PushSample(double prevValues[4], int16_t sample);
public:
void Reset();
void SetSampleRates(double srcRate, double dstRate);
uint32_t Resample(int16_t* in, uint32_t inSampleCount, int16_t* out);
};