List <MusicSymbol> AddClefChanges(List <MusicSymbol> symbols,
ClefMeasures clefs,
TimeSignature time)
{
List <MusicSymbol> result = new List <MusicSymbol>(symbols.Count);
Clef prevclef = clefs.GetClef(0);
foreach (MusicSymbol symbol in symbols)
{
/* A BarSymbol indicates a new measure */
if (symbol is BarSymbol)
{
Clef clef = clefs.GetClef(symbol.StartTime);
if (clef != prevclef)
{
result.Add(new ClefSymbol(clef, symbol.StartTime - 1, true));
}
prevclef = clef;
}
result.Add(symbol);
}
return(result);
}
List <ChordSymbol> CreateChords(List <MidiNote> midinotes,
KeySignature key,
TimeSignature time,
ClefMeasures clefs)
{
int i = 0;
List <ChordSymbol> chords = new List <ChordSymbol>();
List <MidiNote> notegroup = new List <MidiNote>(12);
int len = midinotes.Count;
while (i < len)
{
int starttime = midinotes[i].StartTime;
Clef clef = clefs.GetClef(starttime);
/* Group all the midi notes with the same start time
* into the notes list.
*/
notegroup.Clear();
notegroup.Add(midinotes[i]);
i++;
while (i < len && midinotes[i].StartTime == starttime)
{
notegroup.Add(midinotes[i]);
i++;
}
/* Create a single chord from the group of midi notes with
* the same start time.
*/
ChordSymbol chord = new ChordSymbol(notegroup, key, time, clef, this);
chords.Add(chord);
}
return(chords);
}
/** Create the chord symbols for a single track.
* @param midinotes The Midinotes in the track.
* @param key The Key Signature, for determining sharps/flats.
* @param time The Time Signature, for determining the measures.
* @param clefs The clefs to use for each measure.
* @ret An array of ChordSymbols
*/
private List<ChordSymbol> CreateChords(List<MidiNote> midinotes,
KeySignature key,
TimeSignature time,
ClefMeasures clefs)
{
int i = 0;
List<ChordSymbol> chords = new List<ChordSymbol>();
List<MidiNote> notegroup = new List<MidiNote>(12);
int len = midinotes.Count;
while (i < len) {
int starttime = midinotes[i].StartTime;
Clef clef = clefs.GetClef(starttime);
/* Group all the midi notes with the same start time
* into the notes list.
*/
notegroup.Clear();
notegroup.Add(midinotes[i]);
i++;
while (i < len && midinotes[i].StartTime == starttime) {
notegroup.Add(midinotes[i]);
i++;
}
/* Create a single chord from the group of midi notes with
* the same start time.
*/
ChordSymbol chord = new ChordSymbol(notegroup, key, time, clef, this);
chords.Add(chord);
}
return chords;
}
/** The current clef is always shown at the beginning of the staff, on
* the left side. However, the clef can also change from measure to
* measure. When it does, a Clef symbol must be shown to indicate the
* change in clef. This function adds these Clef change symbols.
* This function does not add the main Clef Symbol that begins each
* staff. That is done in the Staff() contructor.
*/
private List<MusicSymbol> AddClefChanges(List<MusicSymbol> symbols,
ClefMeasures clefs,
TimeSignature time)
{
List<MusicSymbol> result = new List<MusicSymbol>( symbols.Count );
Clef prevclef = clefs.GetClef(0);
foreach (MusicSymbol symbol in symbols) {
/* A BarSymbol indicates a new measure */
if (symbol is BarSymbol) {
Clef clef = clefs.GetClef(symbol.StartTime);
if (clef != prevclef) {
result.Add(new ClefSymbol(clef, symbol.StartTime-1, true));
}
prevclef = clef;
}
result.Add(symbol);
}
return result;
}
public void TestMainClefTreble()
{
List<MidiNote> notes = new List<MidiNote>();
for (int i = 0; i < 100; i++) {
int num = F4 + (i % 20);
MidiNote note = new MidiNote(i*10, 0, num, 5);
notes.Add(note);
}
for (int i = 100; i < 200; i++) {
int num = G3 - (i % 2);
MidiNote note = new MidiNote(i*10, 0, num, 5);
notes.Add(note);
}
for (int i = 200; i < 300; i++) {
int num = middleC - (i % 2);
MidiNote note = new MidiNote(i*10, 0, num, 5);
notes.Add(note);
}
ClefMeasures clefs = new ClefMeasures(notes, 50);
for (int i = 0; i < 100; i++) {
Clef clef = clefs.GetClef(i*10);
Assert.AreEqual(clef, Clef.Treble);
}
for (int i = 100; i < 200; i++) {
Clef clef = clefs.GetClef(i*10);
Assert.AreEqual(clef, Clef.Bass);
}
for (int i = 200; i < 300; i++) {
Clef clef = clefs.GetClef(i*10);
/* Even though the average note is below middle C,
* the main clef is treble.
*/
Assert.AreEqual(clef, Clef.Treble);
}
}
public void TestAllTreble()
{
List<MidiNote> notes = new List<MidiNote>();
for (int i = 0; i < 100; i++) {
int num = middleC + (i % 5);
MidiNote note = new MidiNote(i*10, 0, num, 5);
notes.Add(note);
}
ClefMeasures clefs = new ClefMeasures(notes, 40);
for (int i = 0; i < 100; i++) {
Clef clef = clefs.GetClef(10 * i);
Assert.AreEqual(clef, Clef.Treble);
}
}
