Functions:

1. Import midi file into internal data structure;
2. Export Internal data structure to XML file;
3. Export Internal data structure to midi file;
4. Functions to edit Midi and Meta events.
5. APIs to do conversions between: midi event number, piano key number and music note notation;
6. Helper functions to import/export midi event from/to txt file. txt format: "time" "on/off" "note number" "note velocity"

Hierarchical Midi Data Structures (The hierarchical Midi data structures are designed in Midi.hpp)

1. MidiFile class
2. HeadChunk class
3. TrackChunk class
4. MetaEvent class
5. MidiEvent class

Only need to use APIs defined in MidiFile class for Midi file importing and exporting. The other classes and functions are encapsulated.

1. void importMidiFile(const std::string& fileName);
2. void exportMidiFile(const std::string& fileName);
3. void exportXMLFile(const std::string& fileName);

Example see main.cpp In Linux, run command below to play midi file: timidity close1.mid