SMFWriter.hpp
/* This file is part of Raul.
* Copyright (C) 2007-2009 David Robillard <http://drobilla.net>
*
* Raul 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.
*
* Raul 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 RAUL_SMF_WRITER_HPP
#define RAUL_SMF_WRITER_HPP
#include <stdexcept>
#include <string>
#include "raul/MIDISink.hpp"
#include "raul/TimeStamp.hpp"
namespace Raul {
class SMFWriter : public Raul::MIDISink {
public:
explicit SMFWriter(TimeUnit unit);
~SMFWriter();
bool start(const std::string& filename,
TimeStamp start_time) throw (std::logic_error);
TimeUnit unit() const { return _unit; }
void write_event(TimeStamp time,
size_t ev_size,
const unsigned char* ev) throw (std::logic_error);
void flush();
void finish() throw (std::logic_error);
protected:
static const uint32_t VAR_LEN_MAX = 0x0FFFFFFF;
void write_header();
void write_footer();
void write_chunk_header(const char id[4], uint32_t length);
void write_chunk(const char id[4], uint32_t length, void* data);
size_t write_var_len(uint32_t val);
std::string _filename;
FILE* _fd;
TimeUnit _unit;
Raul::TimeStamp _start_time;
Raul::TimeStamp _last_ev_time;
uint32_t _track_size;
uint32_t _header_size;
};
} // namespace Raul
#endif // RAUL_SMF_WRITER_HPP
Raul::SMFWriter::start
bool start(const std::string &filename, TimeStamp start_time)
Start a write to an SMF file.
Definition: SMFWriter.cpp:70
Raul::MIDISink
Pure virtual base for anything you can write MIDI to.
Definition: MIDISink.hpp:31
Raul::SMFWriter::_header_size
uint32_t _header_size
size of SMF header, including MTrk chunk header
Definition: SMFWriter.hpp:67
Raul::SMFWriter::write_var_len
size_t write_var_len(uint32_t val)
Write an SMF variable length value.
Definition: SMFWriter.cpp:222
Raul::TimeUnit
A type of time stamp.
Definition: TimeStamp.hpp:33
Raul
Definition: Array.hpp:26
Raul::SMFWriter
Standard Midi File (Type 0) Writer.
Definition: SMFWriter.hpp:33
Raul::SMFWriter::SMFWriter
SMFWriter(TimeUnit unit)
Create a new SMF writer.
Definition: SMFWriter.cpp:43
Raul::TimeStamp
A real-time time stamp (possible units: frame, absolute (s), or beat).
Definition: TimeStamp.hpp:80
Raul::SMFWriter::write_event
void write_event(TimeStamp time, size_t ev_size, const unsigned char *ev)
Write an event at the end of the file.
Definition: SMFWriter.cpp:100
Raul::SMFWriter::_last_ev_time
Raul::TimeStamp _last_ev_time
Time last event was written relative to _start_time.
Definition: SMFWriter.hpp:65