SampleRateConverter.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
 
namespace Audio
{
    class ISampleRateConverter
    {
    public:
        virtual ~ISampleRateConverter() {}
 
        virtual void Init(const float InSampleRateRatio, const int32 InNumChannels) = 0;
 
        // Sets the sample rate ratio and the number of frames to interpolate from the current sample rate ratio
        virtual void SetSampleRateRatio(const float InSampleRateRatio, const int32 NumInterpolationFrames = 0) = 0;
 
        virtual int32 ProcessFullbuffer(const int16* InBuffer, const int32 InNumSamples, TArray<float>& OutBuffer) = 0;
        virtual int32 ProcessFullbuffer(const float* InBuffer, const int32 InNumSamples, TArray<float>& OutBuffer) = 0;
 
        virtual int32 ProcessChunk(const int16* BufferChunk, const int32 NumInputSamples, const int32 RequestedFrames, TArray<float>& OutBuffer) = 0;
        virtual int32 ProcessChunk(const float* BufferChunk, const int32 NumInputSamples, const int32 RequestedFrames, TArray<float>& OutBuffer) = 0;
 
        // Creates a new instance
        static SIGNALPROCESSING_API ISampleRateConverter* CreateSampleRateConverter();
    };
 
}