RAUL 0.8.0

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SMFWriter.hpp

    00001 /* This file is part of Raul.
    00002  * Copyright (C) 2007-2009 David Robillard <http://drobilla.net>
    00003  *
    00004  * Raul is free software; you can redistribute it and/or modify it under the
    00005  * terms of the GNU General Public License as published by the Free Software
    00006  * Foundation; either version 2 of the License, or (at your option) any later
    00007  * version.
    00008  *
    00009  * Raul is distributed in the hope that it will be useful, but WITHOUT ANY
    00010  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    00011  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for details.
    00012  *
    00013  * You should have received a copy of the GNU General Public License along
    00014  * with this program; if not, write to the Free Software Foundation, Inc.,
    00015  * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
    00016  */
    00017
    00018 #ifndef RAUL_SMF_WRITER_HPP
    00019 #define RAUL_SMF_WRITER_HPP
    00020
    00021 #include <stdexcept>
    00022 #include <string>
    00023
    00024 #include "raul/MIDISink.hpp"
    00025 #include "raul/TimeStamp.hpp"
    00026
    00027 namespace Raul {
    00028
    00029
    00033 class SMFWriter : public Raul::MIDISink {
    00034 public:
    00035     explicit SMFWriter(TimeUnit unit);
    00036     ~SMFWriter();
    00037
    00038     bool start(const std::string& filename,
    00039                TimeStamp          start_time) throw (std::logic_error);
    00040
    00041     TimeUnit unit() const { return _unit; }
    00042
    00043     void write_event(TimeStamp            time,
    00044                      size_t               ev_size,
    00045                      const unsigned char* ev) throw (std::logic_error);
    00046
    00047     void flush();
    00048
    00049     void finish() throw (std::logic_error);
    00050
    00051 protected:
    00052     static const uint32_t VAR_LEN_MAX = 0x0FFFFFFF;
    00053
    00054     void write_header();
    00055     void write_footer();
    00056
    00057     void     write_chunk_header(const char id[4], uint32_t length);
    00058     void     write_chunk(const char id[4], uint32_t length, void* data);
    00059     size_t   write_var_len(uint32_t val);
    00060
    00061     std::string     _filename;
    00062     FILE*           _fd;
    00063     TimeUnit        _unit;
    00064     Raul::TimeStamp _start_time;
    00065     Raul::TimeStamp _last_ev_time;
    00066     uint32_t        _track_size;
    00067     uint32_t        _header_size;
    00068 };
    00069
    00070
    00071 } // namespace Raul
    00072
    00073 #endif // RAUL_SMF_WRITER_HPP
    00074