64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
/**
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This file is a part of our_dick
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Copyright (C) 2020 rexy712
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef OUR_DICK_AUDIO_DETAIL_HPP
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#define OUR_DICK_AUDIO_DETAIL_HPP
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#include <tuple> //tuple, get
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#include <utility> //forward, integer_sequence
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namespace audio::detail{
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template<typename Func, typename... Args>
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struct callback_helper{
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Func&& m_f;
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std::tuple<Args...> m_args;
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template<int... Indices>
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int operator()(const void* input, void* output, unsigned long frame_count,
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unsigned long flags, std::integer_sequence<int,Indices...>)
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{
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return std::forward<Func>(m_f)(input, output, frame_count, flags, std::get<Indices>(m_args)...);
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}
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};
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class callback_iface
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{
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public:
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callback_iface() = default;
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virtual ~callback_iface() = default;
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virtual int operator()(const void* input, void* output, unsigned long frame_count, unsigned long flags) = 0;
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};
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template<typename Func, typename... Args>
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class callback_impl : public callback_iface
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{
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private:
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callback_helper<Func,Args...> m_ch;
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public:
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template<class Fn, class... Ts>
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callback_impl(Fn&& f, Ts&&... ts):
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m_ch{std::forward<Fn>(f), {std::forward<Ts>(ts)...}}{}
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int operator()(const void* input, void* output, unsigned long frame_count, unsigned long flags)override{
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return m_ch(input, output, frame_count, flags, typename ::util::sequence_gen<sizeof...(Args)>::type{});
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}
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};
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}
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#endif
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