37 lines
860 B
C++
37 lines
860 B
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// Copyright The Music Player Daemon Project
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#ifndef MPD_PCM_UTILS_H
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#define MPD_PCM_UTILS_H
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#include <cstdint>
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#include <limits>
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enum class SampleFormat : uint8_t;
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template<SampleFormat F> struct SampleTraits;
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/**
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* Check if the value is within the range of the provided bit size,
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* and caps it if necessary.
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*/
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template<SampleFormat F, class Traits=SampleTraits<F>>
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constexpr typename Traits::value_type
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PcmClamp(typename Traits::long_type x) noexcept
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{
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typedef typename Traits::value_type T;
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typedef std::numeric_limits<T> limits;
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static_assert(Traits::MIN >= limits::min(), "out of range");
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static_assert(Traits::MAX <= limits::max(), "out of range");
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if (x < Traits::MIN) [[unlikely]]
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return T(Traits::MIN);
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if (x > Traits::MAX) [[unlikely]]
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return T(Traits::MAX);
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return T(x);
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}
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#endif
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