info.h

/*
 * Copyright (c) 2014-2023 Synthstrom Audible Limited
 *
 * This file is part of The Synthstrom Audible Deluge Firmware.
 *
 * The Synthstrom Audible Deluge Firmware 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.
 *
 * This program 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 this program.
 * If not, see <https://www.gnu.org/licenses/>.
 */
#pragma once
 
#include "gui/ui/sound_editor.h"
#include "model/mod_controllable/filters/filter_config.h"
#include "model/mod_controllable/mod_controllable_audio.h"
#include "modulation/patch/patch_cable_set.h"
 
namespace deluge::gui::menu_item::filter {
 
enum class FilterSlot : uint8_t {
    LPF,
    HPF,
};
 
enum class FilterParamType : uint8_t {
    FREQUENCY,
    RESONANCE,
    MORPH,
    MODE,
};
 
class FilterInfo {
public:
    FilterInfo(FilterSlot slot_, FilterParamType type_) : slot{slot_}, type{type_} {}
    ::FilterMode getMode() const {
        if (slot == FilterSlot::LPF) {
            return soundEditor.currentModControllable->lpfMode;
        }
        else {
            return soundEditor.currentModControllable->hpfMode;
        }
    }
    int32_t getModeValue() const {
        if (slot == FilterSlot::HPF) {
            return util::to_underlying(soundEditor.currentModControllable->hpfMode) - kFirstHPFMode;
        }
        else {
            // Off is located past the HPFLadder, which isn't an option for the low pass filter (should it be?)
            int32_t selection = util::to_underlying(soundEditor.currentModControllable->lpfMode);
            return std::min(selection, kNumLPFModes);
        }
    }
    void setMode(int32_t value) const { setModeForModControllable(value, soundEditor.currentModControllable); }
    void setModeForModControllable(int32_t value, ModControllableAudio* modControllable) const {
        if (slot == FilterSlot::HPF) {
            modControllable->hpfMode = static_cast<FilterMode>(value + kFirstHPFMode);
        }
        else {
            // num lpf modes counts off but there's HPF modes in the middle
            if (value >= kNumLPFModes) {
                modControllable->lpfMode = FilterMode::OFF;
            }
            else {
                modControllable->lpfMode = static_cast<FilterMode>(value);
            }
        }
    }
    FilterParamType getFilterParamType() const { return type; }
    FilterSlot getSlot() const { return slot; }
    [[nodiscard]] std::string_view getMorphNameOr(std::string_view alt) const {
        if (type == FilterParamType::MORPH) {
            using enum l10n::String;
            auto filt = deluge::dsp::filter::SpecificFilter(getMode());
            return l10n::getView(filt.getMorphName());
        }
        else {
            return alt;
        }
    }
    bool isOn() const { return getMode() != ::FilterMode::OFF; }
 
private:
    FilterSlot slot;
    FilterParamType type;
};
 
static_assert(sizeof(FilterInfo) <= 4);
 
} // namespace deluge::gui::menu_item::filter