midifile.hpp

/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */
 
/* @file midifile.hpp Parser for standard MIDI files */
 
#ifndef MUSIC_MIDIFILE_HPP
#define MUSIC_MIDIFILE_HPP
 
#include "../stdafx.h"
#include "midi.h"
 
struct MusicSongInfo;
 
struct MidiFile {
  struct DataBlock {
    uint32_t ticktime;        
    uint32_t realtime;        
    std::vector<byte> data; 
    DataBlock(uint32_t _ticktime = 0) : ticktime(_ticktime) { }
  };
  struct TempoChange {
    uint32_t ticktime; 
    uint32_t tempo;    
    TempoChange(uint32_t _ticktime, uint32_t _tempo) : ticktime(_ticktime), tempo(_tempo) { }
  };
 
  std::vector<DataBlock> blocks;   
  std::vector<TempoChange> tempos; 
  uint16_t tickdiv;                  
 
  MidiFile();
  ~MidiFile();
 
  bool LoadFile(const std::string &filename);
  bool LoadMpsData(const byte *data, size_t length);
  bool LoadSong(const MusicSongInfo &song);
  void MoveFrom(MidiFile &other);
 
  bool WriteSMF(const std::string &filename);
 
  static std::string GetSMFFile(const MusicSongInfo &song);
  static bool ReadSMFHeader(const std::string &filename, SMFHeader &header);
  static bool ReadSMFHeader(FILE *file, SMFHeader &header);
};
 
#endif /* MUSIC_MIDIFILE_HPP */