Esempio n. 1
0
    MIDIHeader ParseHeader(FileStream inFile)
    {
        MIDIHeader header = new MIDIHeader();

        // MThd
        {
            byte[] _mthd = new byte[4];
            inFile.Read(_mthd, 0, 4);
            Array.Reverse(_mthd);
            header.MThd = BitConverter.ToUInt32(_mthd, 0);
            if (header.MThd != (UInt32)MIDI_EVENT_TYPES.HEADER_CHUNK_ID)
            {
                throw new Exception("wrong midi header");
            }
        }

        //header length;
        {
            byte[] _length = new byte[4];
            inFile.Read(_length, 0, 4);
            Array.Reverse(_length);
            header.header_length = BitConverter.ToUInt32(_length, 0);
            if (header.header_length != (UInt32)MIDI_EVENT_TYPES.HEADER_CHUNK_SIZE)
            {
                throw new Exception("wrong header chunk size");
            }
        }

        // format
        {
            byte[] _format = new byte[2];
            inFile.Read(_format, 0, 2);
            Array.Reverse(_format);
            header.format = BitConverter.ToUInt16(_format, 0);
        }

        // num_of_tracks
        {
            byte[] _num_of_tracks = new byte[2];
            inFile.Read(_num_of_tracks, 0, 2);
            Array.Reverse(_num_of_tracks);
            header.number_of_tracks = BitConverter.ToUInt16(_num_of_tracks, 0);
        }

        // division
        {
            byte[] _division = new byte[2];
            inFile.Read(_division, 0, 2);
            Array.Reverse(_division);
            header.division = BitConverter.ToUInt16(_division, 0);
        }

        return(header);
    }
Esempio n. 2
0
    public void ReadMIDIFile(string path)
    {
        Debug.Log(path);

        this.midiFile = File.OpenRead(path);
        this.header   = ParseHeader(midiFile);

        this.tracks       = new List <MIDITrack>();
        this.currentNotes = new Dictionary <uint, MIDINote>();
        for (int i = 0; i < header.number_of_tracks; i++)
        {
            MIDITrack track = ParseTrack(midiFile);
            this.tracks.Add(track);
        }
    }
Esempio n. 3
0
    MIDIHeader ParseHeader(FileStream inFile)
    {
        MIDIHeader header = new MIDIHeader ();

        // MThd
        {
            byte[] _mthd = new byte[4];
            inFile.Read(_mthd, 0, 4);
            Array.Reverse(_mthd);
            header.MThd = BitConverter.ToUInt32(_mthd, 0);
            if(header.MThd != (UInt32)MIDI_EVENT_TYPES.HEADER_CHUNK_ID){
                throw new Exception("wrong midi header");
            }
        }

        //header length;
        {
            byte[] _length = new byte[4];
            inFile.Read(_length, 0, 4);
            Array.Reverse(_length);
            header.header_length = BitConverter.ToUInt32(_length, 0);
            if(header.header_length != (UInt32)MIDI_EVENT_TYPES.HEADER_CHUNK_SIZE){
                throw new Exception("wrong header chunk size");
            }
        }

        // format
        {
            byte[] _format = new byte[2];
            inFile.Read(_format, 0, 2);
            Array.Reverse(_format);
            header.format = BitConverter.ToUInt16(_format, 0);
        }

        // num_of_tracks
        {
            byte[] _num_of_tracks = new byte[2];
            inFile.Read(_num_of_tracks, 0, 2);
            Array.Reverse(_num_of_tracks);
            header.number_of_tracks = BitConverter.ToUInt16(_num_of_tracks, 0);
        }

        // division
        {
            byte[] _division = new byte[2];
            inFile.Read(_division, 0, 2);
            Array.Reverse(_division);
            header.division = BitConverter.ToUInt16(_division, 0);
        }

        return header;
    }
Esempio n. 4
0
    public void ReadMIDIFile(string path)
    {
        Debug.Log(path);

        this.midiFile = File.OpenRead(path);
        this.header = ParseHeader(midiFile);

        this.tracks = new List<MIDITrack>();
        this.currentNotes = new Dictionary<uint, MIDINote>();
        for(int i = 0; i < header.number_of_tracks; i++){
            MIDITrack track = ParseTrack(midiFile);
            this.tracks.Add(track);
        }
    }