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| -rw-r--r-- | src/settings.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/src/settings.h b/src/settings.h new file mode 100644 index 0000000..6396fc4 --- /dev/null +++ b/src/settings.h @@ -0,0 +1,127 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * settings.h + * + * Tue Mar 22 10:59:46 CET 2016 + * Copyright 2016 Christian Glöckner + * cgloeckner@freenet.de + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#pragma once + +#include <atomic> +#include <cassert> + +template <typename T> class SettingRef +{ +public: + SettingRef(std::atomic<T>& value) + : value{value} + , cache{} + { + // string isn't lock free either + assert((std::is_same<T, std::string>::value || value.is_lock_free())); + } + + bool hasChanged() + { + T tmp = cache; + cache.exchange(value); + return tmp == cache; + } + + T getValue() const + { + return cache; + } + +private: + std::atomic<T>& value; + std::atomic<T> cache; +}; + +struct Settings +{ + std::atomic<bool> enable_velocity_modifier; + std::atomic<float> velocity_modifier_falloff; + std::atomic<float> velocity_modifier_weight; + + std::atomic<bool> enable_velocity_randomiser; + std::atomic<float> velocity_randomiser_weight; + + std::atomic<int> samplerate; + + std::atomic<bool> enable_resampling; +}; + +struct SettingsGetter +{ + SettingRef<bool> enable_velocity_modifier; + SettingRef<float> velocity_modifier_falloff; + SettingRef<float> velocity_modifier_weight; + + SettingRef<bool> enable_velocity_randomiser; + SettingRef<float> velocity_randomiser_weight; + + SettingRef<int> samplerate; + + SettingRef<bool> enable_resampling; + + SettingsGetter(Settings& settings) + : enable_velocity_modifier{settings.enable_velocity_modifier} + , velocity_modifier_falloff{settings.velocity_modifier_falloff} + , velocity_modifier_weight{settings.velocity_modifier_weight} + , enable_velocity_randomiser{settings.enable_velocity_randomiser} + , velocity_randomiser_weight{settings.velocity_randomiser_weight} + , samplerate{settings.samplerate} + , enable_resampling{settings.enable_resampling} + { + } +}; + +// lovely reminder: NO, GLOCKE. NOOOO!! +/* +enum class IntParams { + Foo = 0 +}; + +struct Settings { + std::array<std::atomic<int>, 5> ints; + + Settings() + : ints{} { + //get(IntParams::Foo).store(3); + } + + std::atomic<int>& get(IntParams param) { + return ints[(size_t)param]; + } +}; + +struct SettingsGetter { + std::vector<SettingRef<int>> ints; + + SettingsGetter(Settings& parent) { + for (auto& atomic: parent.ints) { + ints.emplace_back(atomic); + } + } +}; +*/ |