comparison midiFileReader/MIDIFileReader.h @ 0:b299a65a3ad0

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