26 lines
941 B
C++
26 lines
941 B
C++
// Copyright (C) 2014 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Audio module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/Core/Error.hpp>
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#include <Nazara/Audio/Debug.hpp>
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template<typename T>
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void NzMixToMono(T* input, T* output, unsigned int channelCount, unsigned int frameCount)
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{
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// Pour éviter l'overflow, on utilise comme accumulateur un type assez grand, (u)int 64 bits pour les entiers, double pour les flottants
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typedef typename std::conditional<std::is_unsigned<T>::value, nzUInt64, nzInt64>::type BiggestInt;
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typedef typename std::conditional<std::is_integral<T>::value, BiggestInt, double>::type Biggest;
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for (unsigned int i = 0; i < frameCount; ++i)
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{
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Biggest acc = Biggest(0);
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for (unsigned int j = 0; j < channelCount; ++j)
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acc += input[i*channelCount + j];
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output[i] = acc/channelCount;
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}
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}
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#include <Nazara/Audio/DebugOff.hpp>
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