MidiFileIn.h

#ifndef STK_MIDIFILEIN_H
#define STK_MIDIFILEIN_H
 
#include "Stk.h"
#include <string>
#include <vector>
#include <fstream>
#include <sstream>
 
namespace stk {
 
/**********************************************************************/
/**********************************************************************/
 
class MidiFileIn : public Stk
{
 public:
 
  MidiFileIn( std::string fileName );
 
  ~MidiFileIn();
 
  int getFileFormat() const { return format_; };
 
  unsigned int getNumberOfTracks() const { return nTracks_; };
 
 
  int getDivision() const { return division_; };
 
 
  void rewindTrack( unsigned int track = 0 );
 
 
  double getTickSeconds( unsigned int track = 0 );
 
 
  unsigned long getNextEvent( std::vector<unsigned char> *event, unsigned int track = 0 );
 
 
  unsigned long getNextMidiEvent( std::vector<unsigned char> *midiEvent, unsigned int track = 0 );
 
 protected:
 
  // This protected class function is used for reading variable-length
  // MIDI file values. It is assumed that this function is called with
  // the file read pointer positioned at the start of a
  // variable-length value.  The function returns true if the value is
  // successfully parsed.  Otherwise, it returns false.
  bool readVariableLength( unsigned long *value );
 
  std::ifstream file_;
  unsigned int nTracks_;
  int format_;
  int division_;
  bool usingTimeCode_;
  std::vector<double> tickSeconds_;
  std::vector<long> trackPointers_;
  std::vector<long> trackOffsets_;
  std::vector<long> trackLengths_;
  std::vector<char> trackStatus_;
 
  // This structure and the following variables are used to save and
  // keep track of a format 1 tempo map (and the initial tickSeconds
  // parameter for formats 0 and 2).
  struct TempoChange { 
    unsigned long count;
    double tickSeconds;
  };
  std::vector<TempoChange> tempoEvents_;
  std::vector<unsigned long> trackCounters_;
  std::vector<unsigned int> trackTempoIndex_;
};
 
} // stk namespace
 
#endif