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/* -*- 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 Lesser 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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);
}
}
};
*/
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