Initial community commit

Src/external_dependencies/openmpt-trunk/src/openmpt/soundbase/MixSampleConvert.hpp

@@ -0,0 +1,101 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+/* SPDX-FileCopyrightText: OpenMPT Project Developers and Contributors */
+
+
+#pragma once
+
+#include "openmpt/all/BuildSettings.hpp"
+
+#include "mpt/base/macros.hpp"
+#include "openmpt/soundbase/MixSample.hpp"
+#include "openmpt/soundbase/SampleConvert.hpp"
+#include "openmpt/soundbase/SampleConvertFixedPoint.hpp"
+
+
+OPENMPT_NAMESPACE_BEGIN
+
+
+template <typename Tdst, typename Tsrc>
+struct ConvertMixSample;
+
+template <>
+struct ConvertMixSample<MixSampleInt, MixSampleInt>
+{
+	MPT_FORCEINLINE MixSampleInt conv(MixSampleInt src)
+	{
+		return src;
+	}
+};
+
+template <>
+struct ConvertMixSample<MixSampleFloat, MixSampleFloat>
+{
+	MPT_FORCEINLINE MixSampleFloat conv(MixSampleFloat src)
+	{
+		return src;
+	}
+};
+
+template <typename Tsrc>
+struct ConvertMixSample<MixSampleInt, Tsrc>
+{
+	MPT_FORCEINLINE MixSampleInt conv(Tsrc src)
+	{
+		return SC::ConvertToFixedPoint<MixSampleInt, Tsrc, MixSampleIntTraits::mix_fractional_bits>{}(src);
+	}
+};
+
+template <typename Tdst>
+struct ConvertMixSample<Tdst, MixSampleInt>
+{
+	MPT_FORCEINLINE Tdst conv(MixSampleInt src)
+	{
+		return SC::ConvertFixedPoint<Tdst, MixSampleInt, MixSampleIntTraits::mix_fractional_bits>{}(src);
+	}
+};
+
+template <typename Tsrc>
+struct ConvertMixSample<MixSampleFloat, Tsrc>
+{
+	MPT_FORCEINLINE MixSampleFloat conv(Tsrc src)
+	{
+		return SC::Convert<MixSampleFloat, Tsrc>{}(src);
+	}
+};
+
+template <typename Tdst>
+struct ConvertMixSample<Tdst, MixSampleFloat>
+{
+	MPT_FORCEINLINE Tdst conv(MixSampleFloat src)
+	{
+		return SC::Convert<Tdst, MixSampleFloat>{}(src);
+	}
+};
+
+template <>
+struct ConvertMixSample<MixSampleInt, MixSampleFloat>
+{
+	MPT_FORCEINLINE MixSampleInt conv(MixSampleFloat src)
+	{
+		return SC::ConvertToFixedPoint<MixSampleInt, MixSampleFloat, MixSampleIntTraits::mix_fractional_bits>{}(src);
+	}
+};
+
+template <>
+struct ConvertMixSample<MixSampleFloat, MixSampleInt>
+{
+	MPT_FORCEINLINE MixSampleFloat conv(MixSampleInt src)
+	{
+		return SC::ConvertFixedPoint<MixSampleFloat, MixSampleInt, MixSampleIntTraits::mix_fractional_bits>{}(src);
+	}
+};
+
+
+template <typename Tdst, typename Tsrc>
+MPT_FORCEINLINE Tdst mix_sample_cast(Tsrc src)
+{
+	return ConvertMixSample<Tdst, Tsrc>{}.conv(src);
+}
+
+
+OPENMPT_NAMESPACE_END