Added "force mono" option to Music and SoundBuffer

Former-commit-id: 1f46d1461a8289a590a71e368f282a955d7d8234

include/Nazara/Audio/Algorithm.hpp

@@ -0,0 +1,16 @@
+// Copyright (C) 2013 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Audio module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_ALGORITHM_AUDIO_HPP
+#define NAZARA_ALGORITHM_AUDIO_HPP
+
+#include <Nazara/Prerequesites.hpp>
+
+template<typename T> void NzMixToMono(T* input, T* output, unsigned int channelCount, unsigned int frameCount);
+
+#include <Nazara/Audio/Algorithm.inl>
+
+#endif // NAZARA_ALGORITHM_AUDIO_HPP