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53 lines
2.1 KiB
C++
53 lines
2.1 KiB
C++
/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/* @file midifile.hpp Parser for standard MIDI files */
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#ifndef MUSIC_MIDIFILE_HPP
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#define MUSIC_MIDIFILE_HPP
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#include "../stdafx.h"
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#include "midi.h"
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#include <vector>
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#include <string>
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struct MusicSongInfo;
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struct MidiFile {
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struct DataBlock {
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uint32_t ticktime; ///< tick number since start of file this block should be triggered at
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uint32_t realtime = 0; ///< real-time (microseconds) since start of file this block should be triggered at
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std::vector<byte> data; ///< raw midi data contained in block
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DataBlock(uint32_t _ticktime = 0) : ticktime(_ticktime) { }
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};
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struct TempoChange {
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uint32_t ticktime; ///< tick number since start of file this tempo change occurs at
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uint32_t tempo; ///< new tempo in microseconds per tick
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TempoChange(uint32_t _ticktime, uint32_t _tempo) : ticktime(_ticktime), tempo(_tempo) { }
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};
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std::vector<DataBlock> blocks; ///< sequential time-annotated data of file, merged to a single track
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std::vector<TempoChange> tempos; ///< list of tempo changes in file
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uint16_t tickdiv; ///< ticks per quarter note
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MidiFile();
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~MidiFile();
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bool LoadFile(const char *filename);
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bool LoadMpsData(const byte *data, size_t length);
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bool LoadSong(const MusicSongInfo &song);
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void MoveFrom(MidiFile &other);
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bool WriteSMF(const char *filename);
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static std::string GetSMFFile(const MusicSongInfo &song);
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static bool ReadSMFHeader(const char *filename, SMFHeader &header);
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static bool ReadSMFHeader(FILE *file, SMFHeader &header);
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};
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#endif /* MUSIC_MIDIFILE_HPP */
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