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/* This file is part of Evoral.
* Copyright(C) 2008 David Robillard <http://drobilla.net>
* Copyright(C) 2000-2008 Paul Davis
*
* Evoral 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 2 of the License, or(at your option) any later
* version.
*
* Evoral 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 details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef EVORAL_SMF_READER_HPP
#define EVORAL_SMF_READER_HPP
#include <exception>
#include <stdexcept>
#include <string>
#include <inttypes.h>
#include "evoral/visibility.h"
namespace Evoral {
/** Standard MIDI File (Type 0) Reader
*
* Currently this only reads SMF files with tempo-based timing.
*/
class LIBEVORAL_API SMFReader {
public:
class PrematureEOF : public std::exception {
const char* what() const throw() { return "Unexpected end of file"; }
};
class CorruptFile : public std::exception {
const char* what() const throw() { return "Corrupted file"; }
};
class UnsupportedTime : public std::exception {
const char* what() const throw() { return "Unsupported time stamp type (SMPTE)"; }
};
SMFReader(const std::string& filename="");
~SMFReader();
bool open(const std::string& filename) throw (std::logic_error, UnsupportedTime);
bool seek_to_track(unsigned track) throw (std::logic_error);
const std::string& filename() const { return _filename; };
uint16_t type() const { return _type; }
uint16_t ppqn() const { return _ppqn; }
uint16_t num_tracks() const { return _num_tracks; }
int read_event(size_t buf_len,
uint8_t* buf,
uint32_t* ev_size,
uint32_t* ev_delta_time)
throw (std::logic_error, PrematureEOF, CorruptFile);
void close();
static uint32_t read_var_len(FILE* fd) throw (PrematureEOF);
protected:
/** size of SMF header, including MTrk chunk header */
static const uint32_t HEADER_SIZE = 22;
std::string _filename;
FILE* _fd;
uint16_t _type;
uint16_t _ppqn;
uint16_t _num_tracks;
uint32_t _track;
uint32_t _track_size;
};
} // namespace Evoral
#endif // EVORAL_SMF_READER_HPP
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