89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
/* 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
|
|
|