midi.hpp

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#ifndef ACMXVK_MIDI_HPP
#define ACMXVK_MIDI_HPP
 
#include <cstdint>
#include <memory>
#include <ostream>
#include <string>
#include <vector>
 
namespace acmxvk::midi {
 
    struct MidiMessage {
        double delta_seconds = 0.0;
        std::vector<unsigned char> bytes;
        std::uint64_t sequence = 0;
    };
 
    struct MidiMapping {
        int primary_action = 0;
        int secondary_action = 0;
        unsigned char status = 0;
        unsigned char data1 = 0;
        unsigned char data2 = 0;
    };
 
    [[nodiscard]] std::vector<MidiMapping>
    load_mapping_file(const std::string &filename);
 
    class MidiInput {
      public:
        MidiInput();
        ~MidiInput();
 
        MidiInput(const MidiInput &) = delete;
        MidiInput &operator=(const MidiInput &) = delete;
 
        bool open(int port = 0);
        void close();
        [[nodiscard]] bool is_open() const;
        [[nodiscard]] std::vector<MidiMessage> poll_messages();
        [[nodiscard]] std::uint64_t dropped_message_count() const;
 
        static void list_ports(std::ostream &output);
 
      private:
        class Impl;
        std::unique_ptr<Impl> impl;
    };
 
} // namespace acmxvk::midi
 
#endif