mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
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89 lines
2.7 KiB
C++
89 lines
2.7 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2013 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_COMPOST_SOURCES_SOURCE_HPP
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#define SPROUT_COMPOST_SOURCES_SOURCE_HPP
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#include <cstddef>
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#include <sprout/config.hpp>
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#include <sprout/array/array.hpp>
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//
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// COMPOST_LOAD_SOURCE
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//
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#define COMPOST_LOAD_SOURCE <sprout/compost/load/source.hpp>
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//
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// COMPOST_SRC_VERSION
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//
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#define COMPOST_SRC_VERSION(NUM) NUM
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namespace sprout {
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namespace compost {
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namespace sources {
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//
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// version_type
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//
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typedef unsigned long version_type;
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//
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// info_type
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//
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struct info_type {
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public:
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std::uint16_t format_tag; // フォーマットID
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std::uint16_t channels; // チャンネル数
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std::uint32_t samples_per_sec; // サンプリングレート
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std::uint32_t bytes_per_sec; // データ速度 (Byte/sec)
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std::uint16_t block_size; // ブロックサイズ (Byte/sample*チャンネル数)
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std::uint16_t bits_per_sample; // サンプルあたりのビット数 (bit/sample)
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std::size_t size; // 要素数
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};
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//
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// sound_type
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//
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template<std::size_t Size, typename Elem = double>
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struct sound_type {
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public:
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typedef Elem element_type;
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typedef element_type value_type;
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typedef std::size_t size_type;
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SPROUT_STATIC_CONSTEXPR size_type static_size = Size;
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typedef sprout::array<value_type, static_size> elements_type;
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private:
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elements_type elements_;
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public:
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template<typename... Elems>
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SPROUT_CONSTEXPR sound_type(info_type const& info, Elems const&... elems)
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: elements_{{
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(info.bits_per_sample == 8 ? elems / static_cast<value_type>(0x80) - 1
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: elems / static_cast<value_type>(0x8000)
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)...
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}}
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{
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static_assert(sizeof...(Elems) == static_size, "sound_type<>: unmatch source size");
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}
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SPROUT_CONSTEXPR value_type const&
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operator()(size_type x) const {
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return elements_[x];
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}
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SPROUT_CONSTEXPR size_type
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size() const {
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return static_size;
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}
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SPROUT_CONSTEXPR elements_type const&
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elements() const {
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return elements_;
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}
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};
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template<std::size_t Size, typename Elem>
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SPROUT_CONSTEXPR_OR_CONST typename sprout::compost::sources::sound_type<Size, Elem>::size_type
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sprout::compost::sources::sound_type<Size, Elem>::static_size;
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} // namespace sources
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} // namespace compost
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} // namespace sprout
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#endif // #ifndef SPROUT_COMPOST_SOURCES_SOURCE_HPP
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