public bool useDefaultInstruments; /** If true, don't change instruments */
#endregion Fields
#region Constructors
public MidiOptions(MidiFile midifile)
{
int numtracks = midifile.Tracks.Count;
tracks = new bool[numtracks];
mute = new bool[numtracks];
instruments = new int[numtracks];
for (int i = 0; i < tracks.Length; i++) {
tracks[i] = true;
mute[i] = false;
instruments[i] = midifile.Tracks[i].Instrument;
if (midifile.Tracks[i].InstrumentName == "Percussion") {
tracks[i] = false;
}
}
useDefaultInstruments = true;
scrollVert = true;
largeNoteSize = false;
if (tracks.Length == 1) {
twoStaffs = true;
}
else {
twoStaffs = false;
}
showNoteLetters = NoteNameNone;
showLyrics = true;
showMeasures = false;
shifttime = 0;
transpose = 0;
key = -1;
time = midifile.Time;
colors = null;
shadeColor = Color.FromArgb(210, 205, 220);
shade2Color = Color.FromArgb(80, 100, 250);
combineInterval = 40;
tempo = midifile.Time.Tempo;
pauseTime = 0;
playMeasuresInLoop = false;
playMeasuresInLoopStart = 0;
playMeasuresInLoopEnd = midifile.EndTime() / midifile.Time.Measure;
}
public void TestChangeSoundTrack()
{
const byte notenum = 60;
MidiFile midifile = CreateTestChangeSoundMidiFile();
MidiOptions options = new MidiOptions(midifile);
options.useDefaultInstruments = false;
options.tracks[0] = false;
options.tracks[1] = true;
options.tracks[2] = false;
options.instruments[0] = 40;
options.instruments[1] = 41;
options.instruments[2] = 42;
bool ret = midifile.ChangeSound(testfile, options);
Assert.AreEqual(ret, true);
MidiFile newmidi = new MidiFile(testfile);
Assert.AreEqual(newmidi.Tracks.Count, 1);
Assert.AreEqual(newmidi.Tracks[0].Instrument, 41);
for (int i = 0; i < 3; i++) {
MidiNote note = newmidi.Tracks[0].Notes[i];
Assert.AreEqual(note.Number, notenum + 10 + i);
}
File.Delete(testfile);
}
public void TestChangeSoundTempo()
{
MidiFile midifile = CreateTestChangeSoundMidiFile();
MidiOptions options = new MidiOptions(midifile);
options.tempo = 0x405060;
bool ret = midifile.ChangeSound(testfile, options);
Assert.AreEqual(ret, true);
MidiFile newmidi = new MidiFile(testfile);
Assert.AreEqual(newmidi.Tracks.Count, 3);
Assert.AreEqual(newmidi.Time.Tempo, 0x405060);
File.Delete(testfile);
}
public void TestChangeSoundPerChannelTranspose()
{
const byte notenum = 60;
MidiFile midifile = CreateTestChangeSoundPerChannelMidiFile();
MidiOptions options = new MidiOptions(midifile);
options.transpose = 10;
bool ret = midifile.ChangeSound(testfile, options);
Assert.AreEqual(ret, true);
MidiFile newmidi = new MidiFile(testfile);
Assert.AreEqual(newmidi.Tracks.Count, 3);
for (int tracknum = 0; tracknum < 3; tracknum++) {
MidiTrack track = newmidi.Tracks[tracknum];
for (int i = 0; i < 3; i++) {
MidiNote note = track.Notes[i];
Assert.AreEqual(note.Number, notenum + tracknum*10 + i + 10);
}
}
File.Delete(testfile);
}
/** Set the MidiFile to use.
* Save the list of midi notes. Each midi note includes the note Number
* and StartTime (in pulses), so we know which notes to shade given the
* current pulse time.
*/
public void SetMidiFile(MidiFile midifile, MidiOptions options)
{
if (midifile == null) {
notes = null;
useTwoColors = false;
return;
}
List<MidiTrack> tracks = midifile.ChangeMidiNotes(options);
MidiTrack track = MidiFile.CombineToSingleTrack(tracks);
notes = track.Notes;
maxShadeDuration = midifile.Time.Quarter * 2;
/* We want to know which track the note came from.
* Use the 'channel' field to store the track.
*/
for (int tracknum = 0; tracknum < tracks.Count; tracknum++) {
foreach (MidiNote note in tracks[tracknum].Notes) {
note.Channel = tracknum;
}
}
/* When we have exactly two tracks, we assume this is a piano song,
* and we use different colors for highlighting the left hand and
* right hand notes.
*/
useTwoColors = false;
if (tracks.Count == 2) {
useTwoColors = true;
}
showNoteLetters = options.showNoteLetters;
this.Invalidate();
}
public void TestTruncatedFile()
{
const byte notenum = 60;
const byte quarternote = 240;
const byte numtracks = 1;
const byte velocity = 80;
byte[] data = new byte[] {
77, 84, 104, 100, /* MThd ascii header */
0, 0, 0, 6, /* length of header in bytes */
0, 1, /* one or more simultaneous tracks */
0, numtracks,
0, quarternote,
77, 84, 114, 107, /* MTrk ascii header */
0, 0, 0, 30, /* Length of track, in bytes. Should be 24. */
/* time_interval, NoteEvent, note number, velocity */
0, EventNoteOn, notenum, velocity,
60, EventNoteOff, notenum, 0,
0, EventNoteOn, notenum+1, velocity,
30, EventNoteOff, notenum+1, 0,
0, EventNoteOn, notenum+2, velocity,
90, EventNoteOff, notenum+2, 0
};
WriteTestFile(data);
bool got_exception = false;
try {
MidiFile midifile = new MidiFile(testfile);
}
catch (MidiFileException e) {
got_exception = true;
}
File.Delete(testfile);
Assert.AreEqual(got_exception, false);
}
/* Create the MidiFile for the TestChangeSoundPerChannel tests.
* It has only one track, but multiple channels.
*/
MidiFile CreateTestChangeSoundPerChannelMidiFile()
{
const byte notenum = 60;
const byte quarternote = 240;
const byte numtracks = 1;
const byte velocity = 80;
byte[] data = new byte[] {
77, 84, 104, 100, /* MThd ascii header */
0, 0, 0, 6, /* length of header in bytes */
0, 1, /* one or more simultaneous tracks */
0, numtracks,
0, quarternote,
77, 84, 114, 107, /* MTrk ascii header */
0, 0, 0, 81, /* Length of track, in bytes */
/* Instruments are
* channel 0 = 0 (Acoustic Piano)
* channel 1 = 4 (Electric Piano 1)
* channel 2 = 5 (Electric Piano 2)
*/
0, EventProgramChange, 0,
0, EventProgramChange+1, 4,
0, EventProgramChange+2, 5,
/* time_interval, NoteEvent, note number, velocity */
0, EventNoteOn, notenum, velocity,
0, EventNoteOn+1, notenum+10, velocity,
0, EventNoteOn+2, notenum+20, velocity,
30, EventNoteOff, notenum, 0,
0, EventNoteOff+1, notenum+10, 0,
0, EventNoteOff+2, notenum+20, 0,
30, EventNoteOn, notenum+1, velocity,
0, EventNoteOn+1, notenum+11, velocity,
0, EventNoteOn+2, notenum+21, velocity,
30, EventNoteOff, notenum+1, 0,
0, EventNoteOff+1, notenum+11, 0,
0, EventNoteOff+2, notenum+21, 0,
30, EventNoteOn, notenum+2, velocity,
0, EventNoteOn+1, notenum+12, velocity,
0, EventNoteOn+2, notenum+22, velocity,
30, EventNoteOff, notenum+2, 0,
0, EventNoteOff+1, notenum+12, 0,
0, EventNoteOff+2, notenum+22, 0,
};
/* Verify that the original midi has 3 tracks, one per channel */
WriteTestFile(data);
MidiFile midifile = new MidiFile(testfile);
Assert.AreEqual(midifile.Tracks.Count, 3);
Assert.AreEqual(midifile.Tracks[0].Instrument, 0);
Assert.AreEqual(midifile.Tracks[1].Instrument, 4);
Assert.AreEqual(midifile.Tracks[2].Instrument, 5);
for (int tracknum = 0; tracknum < 3; tracknum++) {
MidiTrack track = midifile.Tracks[tracknum];
Assert.AreEqual(track.Notes.Count, 3);
for (int n = 0; n < track.Notes.Count; n++) {
MidiNote m = track.Notes[n];
Assert.AreEqual(m.Number, notenum + 10*tracknum + n);
}
}
return midifile;
}
/** Create a new SheetMusic control.
* MidiFile is the parsed midi file to display.
* SheetMusic Options are the menu options that were selected.
*
* - Apply all the Menu Options to the MidiFile tracks.
* - Calculate the key signature
* - For each track, create a list of MusicSymbols (notes, rests, bars, etc)
* - Vertically align the music symbols in all the tracks
* - Partition the music notes into horizontal staffs
*/
public void init(MidiFile file, MidiOptions options)
{
if (options == null) {
options = new MidiOptions(file);
}
zoom = 1.0f;
filename = file.FileName;
SetColors(options.colors, options.shadeColor, options.shade2Color);
pen = new Pen(Color.Black, 1);
List<MidiTrack> tracks = file.ChangeMidiNotes(options);
SetNoteSize(options.largeNoteSize);
scrollVert = options.scrollVert;
showNoteLetters= options.showNoteLetters;
TimeSignature time = file.Time;
if (options.time != null) {
time = options.time;
}
if (options.key == -1) {
mainkey = GetKeySignature(tracks);
}
else {
mainkey = new KeySignature(options.key);
}
numtracks = tracks.Count;
int lastStart = file.EndTime() + options.shifttime;
/* Create all the music symbols (notes, rests, vertical bars, and
* clef changes). The symbols variable contains a list of music
* symbols for each track. The list does not include the left-side
* Clef and key signature symbols. Those can only be calculated
* when we create the staffs.
*/
List<MusicSymbol>[] symbols = new List<MusicSymbol> [ numtracks ];
for (int tracknum = 0; tracknum < numtracks; tracknum++) {
MidiTrack track = tracks[tracknum];
ClefMeasures clefs = new ClefMeasures(track.Notes, time.Measure);
List<ChordSymbol> chords = CreateChords(track.Notes, mainkey, time, clefs);
symbols[tracknum] = CreateSymbols(chords, clefs, time, lastStart);
}
List<LyricSymbol>[] lyrics = null;
if (options.showLyrics) {
lyrics = GetLyrics(tracks);
}
/* Vertically align the music symbols */
SymbolWidths widths = new SymbolWidths(symbols, lyrics);
// SymbolWidths widths = new SymbolWidths(symbols);
AlignSymbols(symbols, widths);
staffs = CreateStaffs(symbols, mainkey, options, time.Measure);
CreateAllBeamedChords(symbols, time);
if (lyrics != null) {
AddLyricsToStaffs(staffs, lyrics);
}
/* After making chord pairs, the stem directions can change,
* which affects the staff height. Re-calculate the staff height.
*/
foreach (Staff staff in staffs) {
staff.CalculateHeight();
}
BackColor = Color.White;
SetZoom(1.0f);
}
/** Create a new SheetMusic control, using the given parsed MidiFile.
* The options can be null.
*/
public SheetMusic(MidiFile file, MidiOptions options)
{
init(file, options);
}
/** Create a new SheetMusic control, using the given midi filename.
* The options can be null.
*/
public SheetMusic(string filename, MidiOptions options)
{
MidiFile file = new MidiFile(filename);
init(file, options);
}
/** Create a new SheetMusic control, using the given raw midi byte[] data.
* The options can be null.
*/
public SheetMusic(byte[] data, string title, MidiOptions options)
{
MidiFile file = new MidiFile(data, title);
init(file, options);
}
private Image volumeImage; /** The volume image */
#endregion Fields
#region Constructors
/** Create a new MidiPlayer, displaying the play/stop buttons, the
* speed bar, and volume bar. The midifile and sheetmusic are initially null.
*/
public MidiPlayer()
{
this.Font = new Font("Arial", 10, FontStyle.Bold);
loadButtonImages();
int buttonheight = this.Font.Height * 2;
this.midifile = null;
this.options = null;
this.sheet = null;
playstate = stopped;
startTime = DateTime.Now.TimeOfDay;
startPulseTime = 0;
currentPulseTime = 0;
prevPulseTime = -10;
errormsg = new StringBuilder(256);
ToolTip tip;
/* Create the rewind button */
rewindButton = new Button();
rewindButton.Parent = this;
rewindButton.Image = rewindImage;
rewindButton.ImageAlign = ContentAlignment.MiddleCenter;
rewindButton.Size = new Size(buttonheight, buttonheight);
rewindButton.Location = new Point(buttonheight/2, buttonheight/2);
rewindButton.Click += new EventHandler(Rewind);
tip = new ToolTip();
tip.SetToolTip(rewindButton, "Rewind");
/* Create the play button */
playButton = new Button();
playButton.Parent = this;
playButton.Image = playImage;
playButton.ImageAlign = ContentAlignment.MiddleCenter;
playButton.Size = new Size(buttonheight, buttonheight);
playButton.Location = new Point(buttonheight/2, buttonheight/2);
playButton.Location = new Point(rewindButton.Location.X + rewindButton.Width + buttonheight/2,
rewindButton.Location.Y);
playButton.Click += new EventHandler(PlayPause);
playTip = new ToolTip();
playTip.SetToolTip(playButton, "Play");
/* Create the stop button */
stopButton = new Button();
stopButton.Parent = this;
stopButton.Image = stopImage;
stopButton.ImageAlign = ContentAlignment.MiddleCenter;
stopButton.Size = new Size(buttonheight, buttonheight);
stopButton.Location = new Point(playButton.Location.X + playButton.Width + buttonheight/2,
playButton.Location.Y);
stopButton.Click += new EventHandler(Stop);
tip = new ToolTip();
tip.SetToolTip(stopButton, "Stop");
/* Create the fastFwd button */
fastFwdButton = new Button();
fastFwdButton.Parent = this;
fastFwdButton.Image = fastFwdImage;
fastFwdButton.ImageAlign = ContentAlignment.MiddleCenter;
fastFwdButton.Size = new Size(buttonheight, buttonheight);
fastFwdButton.Location = new Point(stopButton.Location.X + stopButton.Width + buttonheight/2,
stopButton.Location.Y);
fastFwdButton.Click += new EventHandler(FastForward);
tip = new ToolTip();
tip.SetToolTip(fastFwdButton, "Fast Forward");
/* Create the Speed bar */
Label speedLabel = new Label();
speedLabel.Parent = this;
speedLabel.Text = "Speed: ";
speedLabel.TextAlign = ContentAlignment.MiddleRight;
speedLabel.Height = buttonheight;
speedLabel.Width = buttonheight*2;
speedLabel.Location = new Point(fastFwdButton.Location.X + fastFwdButton.Width + buttonheight/2,
fastFwdButton.Location.Y);
speedBar = new TrackBar();
speedBar.Parent = this;
speedBar.Minimum = 1;
speedBar.Maximum = 100;
speedBar.TickFrequency = 10;
speedBar.TickStyle = TickStyle.BottomRight;
speedBar.LargeChange = 10;
speedBar.Value = 100;
speedBar.Width = buttonheight * 5;
speedBar.Location = new Point(speedLabel.Location.X + speedLabel.Width + 2,
speedLabel.Location.Y);
tip = new ToolTip();
tip.SetToolTip(speedBar, "Adjust the speed");
/* Create the Volume bar */
Label volumeLabel = new Label();
volumeLabel.Parent = this;
volumeLabel.Image = volumeImage;
volumeLabel.ImageAlign = ContentAlignment.MiddleRight;
volumeLabel.Height = buttonheight;
volumeLabel.Width = buttonheight*2;
volumeLabel.Location = new Point(speedBar.Location.X + speedBar.Width + buttonheight/2,
speedBar.Location.Y);
volumeBar = new TrackBar();
volumeBar.Parent = this;
volumeBar.Minimum = 1;
volumeBar.Maximum = 100;
volumeBar.TickFrequency = 10;
volumeBar.TickStyle = TickStyle.BottomRight;
volumeBar.LargeChange = 10;
volumeBar.Value = 100;
volumeBar.Width = buttonheight * 5;
volumeBar.Location = new Point(volumeLabel.Location.X + volumeLabel.Width + 2,
volumeLabel.Location.Y);
volumeBar.Scroll += new EventHandler(ChangeVolume);
tip = new ToolTip();
tip.SetToolTip(volumeBar, "Adjust the volume");
Height = buttonheight*2;
/* Initialize the timer used for playback, but don't start
* the timer yet (enabled = false).
*/
timer = new Timer();
timer.Enabled = false;
timer.Interval = 100; /* 100 millisec */
timer.Tick += new EventHandler(TimerCallback);
tempSoundFile = "";
}
/** The MidiFile and/or SheetMusic has changed. Stop any playback sound,
* and store the current midifile and sheet music.
*/
public void SetMidiFile(MidiFile file, MidiOptions opt, SheetMusic s)
{
/* If we're paused, and using the same midi file, redraw the
* highlighted notes.
*/
if ((file == midifile && midifile != null && playstate == paused)) {
options = opt;
sheet = s;
sheet.ShadeNotes((int)currentPulseTime, (int)-10, false);
/* We have to wait some time (200 msec) for the sheet music
* to scroll and redraw, before we can re-shade.
*/
Timer redrawTimer = new Timer();
redrawTimer.Interval = 200;
redrawTimer.Tick += new EventHandler(ReShade);
redrawTimer.Enabled = true;
redrawTimer.Start();
}
else {
this.Stop(null, null);
midifile = file;
options = opt;
sheet = s;
}
this.DeleteSoundFile();
}
private ComboBox[] instrumentChoices; /** The instruments to use per track */
#endregion Fields
#region Constructors
/** Create a new InstrumentDialog. Call the ShowDialog() method
* to display the dialog.
*/
public InstrumentDialog(MidiFile midifile)
{
/* Create the dialog box */
dialog = new Form();
Font font = dialog.Font;
dialog.Font = new Font(font.FontFamily, font.Size * 1.4f);
int unit = dialog.Font.Height;
int xstart = unit * 2;
int ystart = unit * 2;
int labelheight = unit * 2;
int maxwidth = 0;
dialog.Text = "Choose Instruments For Each Track";
dialog.MaximizeBox = false;
dialog.MinimizeBox = false;
dialog.ShowInTaskbar = false;
dialog.Icon = new Icon(GetType(), "NotePair.ico");
dialog.AutoScroll = true;
List<MidiTrack> tracks = midifile.Tracks;
instrumentChoices = new ComboBox[tracks.Count];
/* For each midi track, create a label with the track number
* ("Track 2"), and a ComboBox containing all the possible
* midi instruments. Add the text "(default)" to the instrument
* specified in the midi file.
*/
for (int i = 0; i < tracks.Count; i++) {
int num = i+1;
Label label = new Label();
label.Parent = dialog;
label.Text = "Track " + num;
label.TextAlign = ContentAlignment.MiddleRight;
label.Location = new Point(xstart, ystart + i*labelheight);
label.AutoSize = true;
maxwidth = Math.Max(maxwidth, label.Width);
}
for (int i = 0; i < tracks.Count; i++) {
instrumentChoices[i] = new ComboBox();
instrumentChoices[i].DropDownStyle = ComboBoxStyle.DropDownList;
instrumentChoices[i].Parent = dialog;
instrumentChoices[i].Location = new Point(xstart + maxwidth * 3/2, ystart + i*labelheight);
instrumentChoices[i].Size = new Size(labelheight * 8, labelheight);
for (int instr = 0; instr < MidiFile.Instruments.Length; instr++) {
string name = MidiFile.Instruments[instr];
if (tracks[i].Instrument == instr) {
name += " (default)";
}
instrumentChoices[i].Items.Add(name);
}
instrumentChoices[i].SelectedIndex = tracks[i].Instrument;
}
/* Create the "Set All To Piano" button */
Button allPiano = new Button();
allPiano.Parent = dialog;
allPiano.Text = "Set All To Piano";
allPiano.Location = new Point(xstart + maxwidth * 3/2,
ystart + tracks.Count * labelheight);
allPiano.Click += new EventHandler(SetAllPiano);
allPiano.Size = new Size(labelheight * 5, labelheight);
/* Create the OK and Cancel buttons */
int ypos = ystart + (tracks.Count + 3) * labelheight;
Button ok = new Button();
ok.Parent = dialog;
ok.Text = "OK";
ok.Location = new Point(xstart, ypos);
ok.DialogResult = DialogResult.OK;
Button cancel = new Button();
cancel.Parent = dialog;
cancel.Text = "Cancel";
cancel.Location = new Point(ok.Location.X + ok.Width + labelheight/2, ypos);
cancel.DialogResult = DialogResult.Cancel;
dialog.Size = new Size(instrumentChoices[0].Location.X + instrumentChoices[0].Width + 50,
cancel.Location.Y + cancel.Size.Height + 50);
}
public void TestChangeSoundTranspose()
{
const byte notenum = 60;
MidiFile midifile = CreateTestChangeSoundMidiFile();
MidiOptions options = new MidiOptions(midifile);
options.transpose = 10;
bool ret = midifile.ChangeSound(testfile, options);
Assert.AreEqual(ret, true);
MidiFile newmidi = new MidiFile(testfile);
Assert.AreEqual(newmidi.Tracks.Count, 3);
for (int tracknum = 0; tracknum < 3; tracknum++) {
MidiTrack track = newmidi.Tracks[tracknum];
List<MidiNote> notes = track.Notes;
Assert.AreEqual(notes.Count, 3);
Assert.AreEqual(notes[0].StartTime, 0);
Assert.AreEqual(notes[0].Number, notenum + 10*tracknum + 10);
Assert.AreEqual(notes[0].Duration, 60);
Assert.AreEqual(notes[1].StartTime, 60);
Assert.AreEqual(notes[1].Number, notenum + 10*tracknum + 11);
Assert.AreEqual(notes[1].Duration, 30);
Assert.AreEqual(notes[2].StartTime, 90);
Assert.AreEqual(notes[2].Number, notenum + 10*tracknum + 12);
Assert.AreEqual(notes[2].Duration, 90);
}
File.Delete(testfile);
}
/* Create the midi file used by the TestChangeSound() methods */
public MidiFile CreateTestChangeSoundMidiFile()
{
const byte notenum = 60;
const byte quarternote = 240;
const byte numtracks = 3;
const byte velocity = 80;
byte[] data = new byte[] {
77, 84, 104, 100, /* MThd ascii header */
0, 0, 0, 6, /* length of header in bytes */
0, 1, /* one or more simultaneous tracks */
0, numtracks,
0, quarternote,
77, 84, 114, 107, /* MTrk ascii header */
0, 0, 0, 34, /* Length of track, in bytes */
/* tempo event, len=3, tempo = 0x0032ff */
0, MetaEvent, MetaEventTempo, 3, 0x0, 0x32, 0xff,
/* instrument = 4 (Electric Piano 1) */
0, EventProgramChange, 4,
/* time_interval, NoteEvent, note number, velocity */
0, EventNoteOn, notenum, velocity,
60, EventNoteOff, notenum, 0,
0, EventNoteOn, notenum+1, velocity,
30, EventNoteOff, notenum+1, 0,
0, EventNoteOn, notenum+2, velocity,
90, EventNoteOff, notenum+2, 0,
77, 84, 114, 107, /* MTrk ascii header */
0, 0, 0, 34, /* Length of track, in bytes */
/* tempo event, len=3, tempo = 0xa0b0cc */
0, MetaEvent, MetaEventTempo, 3, 0xa0, 0xb0, 0xcc,
/* instrument = 5 (Electric Piano 2) */
0, EventProgramChange, 5,
/* time_interval, NoteEvent, note number, velocity */
0, EventNoteOn, notenum+10, velocity,
60, EventNoteOff, notenum+10, 0,
0, EventNoteOn, notenum+11, velocity,
30, EventNoteOff, notenum+11, 0,
0, EventNoteOn, notenum+12, velocity,
90, EventNoteOff, notenum+12, 0,
77, 84, 114, 107, /* MTrk ascii header */
0, 0, 0, 34, /* Length of track, in bytes */
/* tempo event, len=3, tempo = 0x121244 */
0, MetaEvent, MetaEventTempo, 3, 0x12, 0x12, 0x44,
/* instrument = 0 (Acoustic Grand Piano) */
0, EventProgramChange, 0,
/* time_interval, NoteEvent, note number, velocity */
0, EventNoteOn, notenum+20, velocity,
60, EventNoteOff, notenum+20, 0,
0, EventNoteOn, notenum+21, velocity,
30, EventNoteOff, notenum+21, 0,
0, EventNoteOn, notenum+22, velocity,
90, EventNoteOff, notenum+22, 0,
};
WriteTestFile(data);
/* Verify the original Midi File */
MidiFile midifile = new MidiFile(testfile);
Assert.AreEqual(midifile.Tracks.Count, 3);
Assert.AreEqual(midifile.Tracks[0].Instrument, 4);
Assert.AreEqual(midifile.Tracks[1].Instrument, 5);
Assert.AreEqual(midifile.Tracks[2].Instrument, 0);
for (int tracknum = 0; tracknum < 3; tracknum++) {
MidiTrack track = midifile.Tracks[tracknum];
List<MidiNote> notes = track.Notes;
Assert.AreEqual(notes.Count, 3);
Assert.AreEqual(notes[0].StartTime, 0);
Assert.AreEqual(notes[0].Number, notenum + 10*tracknum);
Assert.AreEqual(notes[0].Duration, 60);
Assert.AreEqual(notes[1].StartTime, 60);
Assert.AreEqual(notes[1].Number, notenum + 10*tracknum + 1);
Assert.AreEqual(notes[1].Duration, 30);
Assert.AreEqual(notes[2].StartTime, 90);
Assert.AreEqual(notes[2].Number, notenum + 10*tracknum + 2);
Assert.AreEqual(notes[2].Duration, 90);
}
return midifile;
}
public void TestMultipleTracks()
{
const byte notenum = 60;
const byte quarternote = 240;
const byte numtracks = 3;
const byte velocity = 80;
byte[] data = new byte[] {
77, 84, 104, 100, /* MThd ascii header */
0, 0, 0, 6, /* length of header in bytes */
0, 1, /* one or more simultaneous tracks */
0, numtracks,
0, quarternote,
77, 84, 114, 107, /* MTrk ascii header */
0, 0, 0, 24, /* Length of track, in bytes */
/* time_interval, NoteEvent, note number, velocity */
0, EventNoteOn, notenum, velocity,
60, EventNoteOff, notenum, 0,
0, EventNoteOn, notenum+1, velocity,
30, EventNoteOff, notenum+1, 0,
0, EventNoteOn, notenum+2, velocity,
90, EventNoteOff, notenum+2, 0,
77, 84, 114, 107, /* MTrk ascii header */
0, 0, 0, 24, /* Length of track, in bytes */
/* time_interval, NoteEvent, note number, velocity */
0, EventNoteOn, notenum+1, velocity,
60, EventNoteOff, notenum+1, 0,
0, EventNoteOn, notenum+2, velocity,
30, EventNoteOff, notenum+2, 0,
0, EventNoteOn, notenum+3, velocity,
90, EventNoteOff, notenum+3, 0,
77, 84, 114, 107, /* MTrk ascii header */
0, 0, 0, 24, /* Length of track, in bytes */
/* time_interval, NoteEvent, note number, velocity */
0, EventNoteOn, notenum+2, velocity,
60, EventNoteOff, notenum+2, 0,
0, EventNoteOn, notenum+3, velocity,
30, EventNoteOff, notenum+3, 0,
0, EventNoteOn, notenum+4, velocity,
90, EventNoteOff, notenum+4, 0,
};
WriteTestFile(data);
MidiFile midifile = new MidiFile(testfile);
File.Delete(testfile);
Assert.AreEqual(midifile.Tracks.Count, numtracks);
Assert.AreEqual(midifile.Time.Numerator, 4);
Assert.AreEqual(midifile.Time.Denominator, 4);
Assert.AreEqual(midifile.Time.Quarter, quarternote);
Assert.AreEqual(midifile.Time.Measure, quarternote * 4);
for (int tracknum = 0; tracknum < numtracks; tracknum++) {
MidiTrack track = midifile.Tracks[tracknum];
List<MidiNote> notes = track.Notes;
Assert.AreEqual(notes.Count, 3);
Assert.AreEqual(notes[0].StartTime, 0);
Assert.AreEqual(notes[0].Number, notenum + tracknum);
Assert.AreEqual(notes[0].Duration, 60);
Assert.AreEqual(notes[1].StartTime, 60);
Assert.AreEqual(notes[1].Number, notenum + tracknum + 1);
Assert.AreEqual(notes[1].Duration, 30);
Assert.AreEqual(notes[2].StartTime, 90);
Assert.AreEqual(notes[2].Number, notenum + tracknum + 2);
Assert.AreEqual(notes[2].Duration, 90);
}
}
public void TestChangeSoundPerChannelInstruments()
{
MidiFile midifile = CreateTestChangeSoundPerChannelMidiFile();
MidiOptions options = new MidiOptions(midifile);
options.useDefaultInstruments = false;
for (int tracknum = 0; tracknum < 3; tracknum++) {
options.instruments[tracknum] = 40 + tracknum;
}
bool ret = midifile.ChangeSound(testfile, options);
Assert.AreEqual(ret, true);
MidiFile newmidi = new MidiFile(testfile);
Assert.AreEqual(newmidi.Tracks.Count, 3);
Assert.AreEqual(newmidi.Tracks[0].Instrument, 40);
Assert.AreEqual(newmidi.Tracks[1].Instrument, 41);
Assert.AreEqual(newmidi.Tracks[2].Instrument, 42);
File.Delete(testfile);
}
public void TestVariousEvents()
{
const byte notenum = 60;
const byte quarternote = 240;
const byte numtracks = 1;
const byte velocity = 80;
byte[] data = new byte[] {
77, 84, 104, 100, /* MThd ascii header */
0, 0, 0, 6, /* length of header in bytes */
0, 1, /* one or more simultaneous tracks */
0, numtracks,
0, quarternote,
77, 84, 114, 107, /* MTrk ascii header */
0, 0, 0, 39, /* Length of track, in bytes */
/* time_interval, NoteEvent, note number, velocity */
0, EventNoteOn, notenum, velocity,
60, EventNoteOff, notenum, 0,
0, EventKeyPressure, notenum, 10,
0, EventControlChange, 10, 10,
0, EventNoteOn, notenum+1, velocity,
30, EventNoteOff, notenum+1, 0,
0, EventProgramChange, 10,
0, EventPitchBend, 0, 0,
0, EventNoteOn, notenum+2, velocity,
90, EventNoteOff, notenum+2, 0
};
WriteTestFile(data);
MidiFile midifile = new MidiFile(testfile);
File.Delete(testfile);
Assert.AreEqual(midifile.Tracks.Count, 1);
Assert.AreEqual(midifile.Time.Numerator, 4);
Assert.AreEqual(midifile.Time.Denominator, 4);
Assert.AreEqual(midifile.Time.Quarter, quarternote);
Assert.AreEqual(midifile.Time.Measure, quarternote * 4);
MidiTrack track = midifile.Tracks[0];
List<MidiNote> notes = track.Notes;
Assert.AreEqual(notes.Count, 3);
Assert.AreEqual(notes[0].StartTime, 0);
Assert.AreEqual(notes[0].Number, notenum);
Assert.AreEqual(notes[0].Duration, 60);
Assert.AreEqual(notes[1].StartTime, 60);
Assert.AreEqual(notes[1].Number, notenum+1);
Assert.AreEqual(notes[1].Duration, 30);
Assert.AreEqual(notes[2].StartTime, 90);
Assert.AreEqual(notes[2].Number, notenum+2);
Assert.AreEqual(notes[2].Duration, 90);
}
public void TestChangeSoundPerChannelPauseTime()
{
const byte notenum = 60;
MidiFile midifile = CreateTestChangeSoundPerChannelMidiFile();
MidiOptions options = new MidiOptions(midifile);
options.pauseTime = 50;
bool ret = midifile.ChangeSound(testfile, options);
Assert.AreEqual(ret, true);
MidiFile newmidi = new MidiFile(testfile);
Assert.AreEqual(newmidi.Tracks.Count, 3);
for (int tracknum = 0; tracknum < 3; tracknum++) {
MidiTrack track = newmidi.Tracks[tracknum];
Assert.AreEqual(track.Notes.Count, 2);
for (int i = 0; i < 2; i++) {
MidiNote note = track.Notes[i];
Assert.AreEqual(note.Number, notenum + 10*tracknum + 1 + i);
Assert.AreEqual(note.StartTime, 60 * (i+1) - 50);
}
}
File.Delete(testfile);
}
/* Command-line program to print out a parsed Midi file. Used for debugging.
* To run:
* - Change Main2 to Main
* - csc MidiNote.cs MidiEvent.cs MidiTrack.cs MidiFileReader.cs MidiOptions.cs
* MidiFile.cs MidiException.cs TimeSignature.cs
* - MidiFile.exe file.mid
*
*/
public static void Main2(string[] arg)
{
if (arg.Length == 0) {
Console.WriteLine("Usage: MidiFile <filename>");
return;
}
MidiFile f = new MidiFile(arg[0]);
Console.Write(f.ToString());
}
public void TestChangeSoundPerChannelTracks()
{
const byte notenum = 60;
MidiFile midifile = CreateTestChangeSoundPerChannelMidiFile();
MidiOptions options = new MidiOptions(midifile);
options.tracks[0] = false;
options.tracks[1] = true;
options.tracks[2] = false;
bool ret = midifile.ChangeSound(testfile, options);
Assert.AreEqual(ret, true);
MidiFile newmidi = new MidiFile(testfile);
Assert.AreEqual(newmidi.Tracks.Count, 1);
MidiTrack track = newmidi.Tracks[0];
Assert.AreEqual(track.Notes.Count, 3);
for (int i = 0; i < track.Notes.Count; i++) {
MidiNote note = track.Notes[i];
Assert.AreEqual(note.Number, notenum + 10 + i);
}
File.Delete(testfile);
}
private NumericUpDown startMeasure; /** The starting measure */
#endregion Fields
#region Constructors
/** Create a new PlayMeasuresDialog. Call the ShowDialog() method
* to display the dialog.
*/
public PlayMeasuresDialog(MidiFile midifile)
{
int lastStart = midifile.EndTime();
int lastMeasure = 1 + lastStart / midifile.Time.Measure;
/* Create the dialog box */
dialog = new Form();
dialog.Text = "Play Selected Measures in a Loop";
dialog.MaximizeBox = false;
dialog.MinimizeBox = false;
dialog.ShowInTaskbar = false;
dialog.Icon = new Icon(GetType(), "NotePair.ico");
dialog.AutoScroll = true;
Font font = dialog.Font;
dialog.Font = new Font(font.FontFamily, font.Size * 1.4f);
int labelheight = dialog.Font.Height * 2;
int xpos = labelheight/2;
int ypos = labelheight/2;
enable = new CheckBox();
enable.Parent = dialog;
enable.Text = "Play Selected Measures in a Loop";
enable.Checked = false;
enable.Location = new Point(xpos, ypos);
enable.Size = new Size(labelheight*9, labelheight);
ypos += labelheight * 3/2;
Label label = new Label();
label.Parent = dialog;
label.Text = "Start Measure";
label.Location = new Point(xpos, ypos);
label.Size = new Size(labelheight * 3, labelheight);
xpos += labelheight * 4;
startMeasure = new NumericUpDown();
startMeasure.Parent = dialog;
startMeasure.Minimum = 1;
startMeasure.Maximum = lastMeasure;
startMeasure.Value = 1;
startMeasure.Location = new Point(xpos, ypos);
startMeasure.Size = new Size(labelheight*2, labelheight);
xpos = labelheight/2;
ypos += labelheight * 3/2;
label = new Label();
label.Parent = dialog;
label.Text = "End Measure";
label.Location = new Point(xpos, ypos);
label.Size = new Size(labelheight * 3, labelheight);
xpos += labelheight * 4;
endMeasure = new NumericUpDown();
endMeasure.Parent = dialog;
endMeasure.Minimum = 1;
endMeasure.Maximum = lastMeasure;
endMeasure.Value = lastMeasure;
endMeasure.Location = new Point(xpos, ypos);
endMeasure.Size = new Size(labelheight*2, labelheight);
/* Create the OK and Cancel buttons */
xpos = labelheight/2;
ypos += labelheight * 3/2;
Button ok = new Button();
ok.Parent = dialog;
ok.Text = "OK";
ok.Location = new Point(xpos, ypos);
ok.DialogResult = DialogResult.OK;
dialog.Size = new Size(labelheight * 10,
labelheight * 8);
}
/**
* Read the midi file into a MidiFile instance.
* Create a SheetMusic control based on the MidiFile.
* Add the sheetmusic control to this form.
* Enable all the menu items.
*
* If any error occurs while reading the midi file,
* display a MessageBox with the error message.
*/
public void OpenMidiFile(string filename)
{
try {
midifile = new MidiFile(filename);
DisableMenus();
EnableMenus();
string displayName = Path.GetFileName(filename);
displayName = displayName.Replace("__", ": ");
displayName = displayName.Replace("_", " ");
Text = displayName + " - Midi Sheet Music";
instrumentDialog = new InstrumentDialog(midifile);
playMeasuresDialog = new PlayMeasuresDialog(midifile);
RedrawSheetMusic();
}
catch (MidiFileException e) {
filename = Path.GetFileName(filename);
string message = "";
message += "MidiSheetMusic was unable to open the file "
+ filename;
message += "\nIt does not appear to be a valid midi file.\n" + e.Message;
MessageBox.Show(message, "Error Opening File",
MessageBoxButtons.OK, MessageBoxIcon.Error);
midifile = null;
DisableMenus();
}
catch (System.IO.IOException e) {
filename = Path.GetFileName(filename);
string message = "";
message += "MidiSheetMusic was unable to open the file "
+ filename;
message += "because:\n" + e.Message + "\n";
MessageBox.Show(message, "Error Opening File",
MessageBoxButtons.OK, MessageBoxIcon.Error);
midifile = null;
DisableMenus();
}
}
