midi_instrument.h

/*
 * Copyright © 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 "definitions_cxx.hpp"
#include "model/instrument/non_audio_instrument.h"
#include "util/containers.h"
#include <array>
#include <string_view>
 
class ModelStack;
class ModelStackWithThreeMainThings;
class ModelStackWithSoundFlags;
 
struct MPEOutputMemberChannel {
    int16_t lastNoteCode{32767};
    uint16_t noteOffOrder{0};
    int16_t lastXValueSent{0};        // The actual 14-bit number. But signed (goes positive and negative).
    int8_t lastYAndZValuesSent[2]{0}; // The actual 7-bit numbers. Y goes both positive and negative.
};
 
class MIDIInstrument final : public NonAudioInstrument {
public:
    MIDIInstrument();
 
    void ccReceivedFromInputMIDIChannel(int32_t cc, int32_t value, ModelStackWithTimelineCounter* modelStack) override;
 
    void allNotesOff();
 
    bool setActiveClip(ModelStackWithTimelineCounter* modelStack, PgmChangeSend maySendMIDIPGMs) override;
    bool writeDataToFile(Serializer& writer, Clip* clipForSavingOutputOnly, Song* song) override;
    bool readTagFromFile(Deserializer& reader, char const* tagName) override;
    Error readModKnobAssignmentsFromFile(int32_t readAutomationUpToPos,
                                         ParamManagerForTimeline* paramManager = nullptr);
 
    // midi device definition file
    Error readDeviceDefinitionFile(Deserializer& reader, bool readFromPresetOrSong);
    void readDeviceDefinitionFileNameFromPresetOrSong(Deserializer& reader);
    Error readCCLabelsFromFile(Deserializer& reader);
    void writeDeviceDefinitionFile(Serializer& writer, bool writeFileNameToPresetOrSong);
    void writeDeviceDefinitionFileNameToPresetOrSong(Serializer& writer);
    void writeCCLabelsToFile(Serializer& writer);
    std::string_view getNameFromCC(int32_t cc);
    void setNameForCC(int32_t cc, std::string_view name);
    String deviceDefinitionFileName;
    bool loadDeviceDefinitionFile = false;
 
    void sendMIDIPGM() override;
 
    void sendNoteToInternal(bool on, int32_t note, uint8_t velocity, uint8_t channel);
 
    int32_t changeControlNumberForModKnob(int32_t offset, int32_t whichModEncoder, int32_t modKnobMode);
    int32_t getFirstUnusedCC(ModelStackWithThreeMainThings* modelStack, int32_t direction, int32_t startAt,
                             int32_t stopAt);
    Error moveAutomationToDifferentCC(int32_t oldCC, int32_t newCC, ModelStackWithThreeMainThings* modelStack);
    int32_t moveAutomationToDifferentCC(int32_t offset, int32_t whichModEncoder, int32_t modKnobMode,
                                        ModelStackWithThreeMainThings* modelStack);
    void offerReceivedNote(ModelStackWithTimelineCounter* modelStackWithTimelineCounter, MIDICable& cable, bool on,
                           int32_t channel, int32_t note, int32_t velocity, bool shouldRecordNotes,
                           bool* doingMidiThru) override;
 
    // ModControllable implementation
    bool modEncoderButtonAction(uint8_t whichModEncoder, bool on, ModelStackWithThreeMainThings* modelStack) override;
    void modButtonAction(uint8_t whichModButton, bool on, ParamManagerForTimeline* paramManager) override;
    ModelStackWithAutoParam* getParamFromModEncoder(int32_t whichModEncoder, ModelStackWithThreeMainThings* modelStack,
                                                    bool allowCreation = true) override;
    uint8_t* getModKnobMode() override { return &modKnobMode; }
 
    int32_t getKnobPosForNonExistentParam(int32_t whichModEncoder, ModelStackWithAutoParam* modelStack) override;
    ModelStackWithAutoParam* getParamToControlFromInputMIDIChannel(int32_t cc,
                                                                   ModelStackWithThreeMainThings* modelStack) override;
    bool doesAutomationExistOnMIDIParam(ModelStackWithThreeMainThings* modelStack, int32_t cc);
    int32_t getOutputMasterChannel();
 
    inline bool sendsToMPE() {
        return (getChannel() == MIDI_CHANNEL_MPE_LOWER_ZONE || getChannel() == MIDI_CHANNEL_MPE_UPPER_ZONE);
    }
    inline bool sendsToInternal() { return (getChannel() >= IS_A_DEST); }
    bool matchesPreset(OutputType otherType, int32_t otherChannel, int32_t otherSuffix, char const* otherName,
                       char const* otherPath) override {
        bool match{false};
        if (type == otherType) {
            match = (getChannel() == otherChannel && (channelSuffix == otherSuffix));
        }
        return match;
    }
    int32_t channelSuffix{-1};
    int32_t lastNoteCode{32767};
    bool collapseAftertouch{false};
    bool collapseMPE{true};
    CCNumber outputMPEY{CC_EXTERNAL_MPE_Y};
    float ratio; // for combining per finger and global bend
 
    std::array<int8_t, kNumModButtons * kNumPhysicalModKnobs> modKnobCCAssignments;
 
    // Numbers 0 to 15 can all be an MPE member depending on configuration
    MPEOutputMemberChannel mpeOutputMemberChannels[16];
 
    char const* getXMLTag() override { return "midi"; }
    char const* getSlotXMLTag() override {
        return sendsToMPE() ? "zone" : sendsToInternal() ? "internalDest" : "channel";
    }
    char const* getSubSlotXMLTag() override { return "suffix"; }
 
    ModelStackWithAutoParam* getModelStackWithParam(ModelStackWithTimelineCounter* modelStack, Clip* clip,
                                                    int32_t paramID, deluge::modulation::params::Kind paramKind,
                                                    bool affectEntire, bool useMenuStack) override;
 
    bool valueChangedEnoughToMatter(int32_t old_value, int32_t new_value, deluge::modulation::params::Kind kind,
                                    uint32_t paramID) override {
        if (kind == deluge::modulation::params::Kind::EXPRESSION) {
            if (paramID == X_PITCH_BEND) {
                // pitch is in 14 bit instead of 7
                return old_value >> 18 != new_value >> 18;
            }
            // aftertouch and mod wheel are positive only and recorded into a smaller range than CCs
            return old_value >> 24 != new_value >> 24;
        }
        return old_value >> 25 != new_value >> 25;
    }
 
protected:
    void polyphonicExpressionEventPostArpeggiator(int32_t newValue, int32_t noteCodeAfterArpeggiation,
                                                  int32_t expressionDimension, ArpNote* arpNote,
                                                  int32_t noteIndex) override;
    void noteOnPostArp(int32_t noteCodePostArp, ArpNote* arpNote, int32_t noteIndex) override;
    void noteOffPostArp(int32_t noteCodePostArp, int32_t oldMIDIChannel, int32_t velocity, int32_t noteIndex) override;
    void monophonicExpressionEvent(int32_t newValue, int32_t expressionDimension) override;
 
private:
    void sendMonophonicExpressionEvent(int32_t expressionDimension);
    void combineMPEtoMono(int32_t value32, int32_t expressionDimension);
    void outputAllMPEValuesOnMemberChannel(int16_t const* mpeValuesToUse, int32_t outputMemberChannel);
    Error readMIDIParamFromFile(Deserializer& reader, int32_t readAutomationUpToPos,
                                MIDIParamCollection* midiParamCollection, int8_t* getCC = nullptr);
 
    deluge::fast_map<uint8_t, std::string> labels;
};