andrew@0: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
andrew@0: 
andrew@0: /*
andrew@0:     This is a modified version of a source file from the 
andrew@0:     Rosegarden MIDI and audio sequencer and notation editor.
andrew@0:     This file copyright 2000-2010 Richard Bown and Chris Cannam.
andrew@0:   
andrew@0:     Permission is hereby granted, free of charge, to any person
andrew@0:     obtaining a copy of this software and associated documentation
andrew@0:     files (the "Software"), to deal in the Software without
andrew@0:     restriction, including without limitation the rights to use, copy,
andrew@0:     modify, merge, publish, distribute, sublicense, and/or sell copies
andrew@0:     of the Software, and to permit persons to whom the Software is
andrew@0:     furnished to do so, subject to the following conditions:
andrew@0: 
andrew@0:     The above copyright notice and this permission notice shall be
andrew@0:     included in all copies or substantial portions of the Software.
andrew@0: 
andrew@0:     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
andrew@0:     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
andrew@0:     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
andrew@0:     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
andrew@0:     ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
andrew@0:     CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
andrew@0:     WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
andrew@0: 
andrew@0:     Except as contained in this notice, the names of the authors
andrew@0:     shall not be used in advertising or otherwise to promote the sale,
andrew@0:     use or other dealings in this Software without prior written
andrew@0:     authorization.
andrew@0: */
andrew@0: 
andrew@0: #ifndef _MIDI_FILE_READER_H_
andrew@0: #define _MIDI_FILE_READER_H_
andrew@0: 
andrew@0: #include "MIDIComposition.h"
andrew@0: 
andrew@0: #include <set>
andrew@0: #include <iostream>
andrew@0: 
andrew@0: typedef unsigned char MIDIByte;
andrew@0: 
andrew@0: class MIDIFileReader
andrew@0: {
andrew@0: public:
andrew@0:     MIDIFileReader(std::string path);
andrew@0:     virtual ~MIDIFileReader();
andrew@0: 
andrew@0:     virtual bool isOK() const;
andrew@0:     virtual std::string getError() const;
andrew@0: 
andrew@0:     virtual MIDIComposition load() const;
andrew@0: 
andrew@0:     MIDIConstants::MIDIFileFormatType getFormat() const { return m_format; }
andrew@0:     int getTimingDivision() const { return m_timingDivision; }
andrew@0: 
andrew@0: protected:
andrew@0: 
andrew@0:     bool parseFile();
andrew@0:     bool parseHeader(const std::string &midiHeader);
andrew@0:     bool parseTrack(unsigned int trackNum);
andrew@0:     bool consolidateNoteOffEvents(unsigned int track);
andrew@0: 
andrew@0:     // Internal convenience functions
andrew@0:     //
andrew@0:     int  midiBytesToInt(const std::string &bytes);
andrew@0:     long midiBytesToLong(const std::string &bytes);
andrew@0: 
andrew@0:     long getNumberFromMIDIBytes(int firstByte = -1);
andrew@0: 
andrew@0:     MIDIByte getMIDIByte();
andrew@0:     std::string getMIDIBytes(unsigned long bytes);
andrew@0: 
andrew@0:     bool skipToNextTrack();
andrew@0: 
andrew@0:     int                    m_timingDivision;   // pulses per quarter note
andrew@0:     MIDIConstants::MIDIFileFormatType m_format;
andrew@0:     unsigned int           m_numberOfTracks;
andrew@0: 
andrew@0:     long                   m_trackByteCount;
andrew@0:     bool                   m_decrementCount;
andrew@0: 
andrew@0:     std::map<int, std::string> m_trackNames;
andrew@0:     MIDIComposition        m_midiComposition;
andrew@0: 
andrew@0:     std::string            m_path;
andrew@0:     std::ifstream         *m_midiFile;
andrew@0:     size_t                 m_fileSize;
andrew@0:     std::string            m_error;
andrew@24: 
andrew@0: };
andrew@0: 
andrew@0: 
andrew@0: #endif // _MIDI_FILE_READER_H_