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/* 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"
OPENMPT_NAMESPACE_BEGIN
namespace SC
{ // SC = _S_ample_C_onversion
template <typename Tfixed, int fractionalBits, bool clipOutput>
struct ClipFixed
{
using input_t = Tfixed;
using output_t = Tfixed;
MPT_FORCEINLINE Tfixed operator()(Tfixed val)
{
static_assert(fractionalBits >= 0 && fractionalBits <= sizeof(output_t) * 8 - 1);
if constexpr(clipOutput)
{
constexpr Tfixed clip_max = (Tfixed(1) << fractionalBits) - Tfixed(1);
constexpr Tfixed clip_min = Tfixed(0) - (Tfixed(1) << fractionalBits);
if(val < clip_min) val = clip_min;
if(val > clip_max) val = clip_max;
return val;
} else
{
return val;
}
}
};
} // namespace SC
OPENMPT_NAMESPACE_END
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