MIDI_Parser.hpp

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#pragma once
 
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
 
#include <Def/Def.hpp>
#include <Settings/SettingsWrapper.hpp>
 
#ifndef ARDUINO
#include <vector>
#endif
 
BEGIN_CS_NAMESPACE
 
const uint8_t NOTE_OFF = 0x80;
const uint8_t NOTE_ON = 0x90;
const uint8_t KEY_PRESSURE = 0xA0;
const uint8_t CC = 0xB0, CONTROL_CHANGE = CC;
const uint8_t PROGRAM_CHANGE = 0xC0;
const uint8_t CHANNEL_PRESSURE = 0xD0;
const uint8_t PITCH_BEND = 0xE0;
 
const uint8_t SysExStart = 0xF0;
const uint8_t SysExEnd = 0xF7;
 
const uint8_t TuneRequest = 0xF6;
 
enum MIDI_read_t : uint8_t {
    NO_MESSAGE = 0,
    CHANNEL_MESSAGE = 1,
    SYSEX_MESSAGE = 2,
 
    /* System Real-Time messages */
    TIMING_CLOCK_MESSAGE = 0xF8,
    UNDEFINED_REALTIME_MESSAGE_1 = 0xF9,
    START_MESSAGE = 0xFA,
    CONTINUE_MESSAGE = 0xFB,
    STOP_MESSAGE = 0xFC,
    UNDEFINED_REALTIME_MESSAGE_2 = 0xFD,
    ACTIVE_SENSING_MESSAGE = 0xFE,
    RESET_MESSAGE = 0xFF
};
 
// -------------------------------------------------------------------------- //
 
struct ChannelMessage {
    uint8_t header;
    uint8_t data1;
    uint8_t data2;
 
    uint8_t CN = 0;
 
    bool operator==(const ChannelMessage &other) const {
        return this->header == other.header && this->data1 == other.data1 &&
               this->data2 == other.data2 && this->CN == other.CN;
    }
 
    bool operator!=(const ChannelMessage &other) const {
        return !(*this == other);
    }
};
 
struct SysExMessage {
    SysExMessage() : data(nullptr), length(0), CN(0) {}
    SysExMessage(const uint8_t *data, size_t length, uint8_t CN = 0)
        : data(data), length(length), CN(CN) {}
#ifndef ARDUINO
    SysExMessage(const std::vector<uint8_t> &vec, uint8_t CN = 0)
        : data(vec.data()), length(vec.size()), CN(CN) {}
#endif
    const uint8_t *data;
    uint8_t length;
    uint8_t CN;
};
 
struct RealTimeMessage {
    uint8_t message;
    uint8_t CN;
};
 
// -------------------------------------------------------------------------- //
 
class MIDI_Parser {
  public:
    ChannelMessage getChannelMessage();
#if !IGNORE_SYSEX
 
    virtual SysExMessage getSysEx() const = 0;
#else
    SysExMessage getSysEx() const { return {nullptr, 0, 0}; }
#endif
 
    const uint8_t *getSysExBuffer() const { return getSysEx().data; }
    size_t getSysExLength() const { return getSysEx().length; }
    virtual uint8_t getCN() const { return 0; };
 
  protected:
    ChannelMessage midimsg = {};
 
  public:
    static bool isStatus(uint8_t data);
    static bool isData(uint8_t data);
};
 
END_CS_NAMESPACE