void SwingDetector::add(ChordRest *cr)
{
if (elements.empty()) {
if (ReducedFraction(cr->globalDuration()) >= FULL_LEN)
return;
const int tickInBar = cr->tick() - cr->measure()->tick();
if (tickInBar % MScore::division == 0)
append(cr);
}
else {
if (sumLen + ReducedFraction(cr->globalDuration()) > FULL_LEN) {
reset();
return;
}
append(cr);
if (sumLen == FULL_LEN) {
// check for swing patterns
switch (swingType) {
case MidiOperation::Swing::SWING:
checkNormalSwing();
break;
case MidiOperation::Swing::SHUFFLE:
checkShuffle();
break;
default:
break;
}
reset();
}
}
}
void addTitleIfAny(const std::multimap<ReducedFraction, std::string> &lyricTrack, Score *score)
{
int textCounter = 0;
for (const auto &lyric: lyricTrack) {
if (lyric.first == ReducedFraction(0, 1)) {
QString text = MidiCharset::convertToCharset(lyric.second);
if (isTitlePrefix(text)) {
++textCounter;
addTitleToScore(score, text, textCounter);
}
}
else if (lyric.first > ReducedFraction(0, 1)) {
break;
}
}
}
void SwingDetector::append(ChordRest *cr)
{
if (cr->type() == Element::CHORD || cr->type() == Element::REST) {
elements.push_back(cr);
sumLen += ReducedFraction(cr->globalDuration());
}
}
void SwingDetector::append(ChordRest *cr)
{
if (cr->isChord() || cr->isRest()) {
elements.push_back(cr);
sumLen += ReducedFraction(cr->globalTicks());
}
}
void removeOverlappingNotes(std::multimap<int, MTrack> &tracks)
{
for (auto &track: tracks) {
auto &chords = track.second.chords;
for (auto i1 = chords.begin(); i1 != chords.end(); ++i1) {
auto &chord1 = i1->second;
const auto &onTime1 = i1->first;
for (auto ¬e1: chord1.notes) {
for (auto i2 = std::next(i1); i2 != chords.end(); ++i2) {
const auto &onTime2 = i2->first;
if (onTime2 >= note1.offTime)
break;
auto &chord2 = i2->second;
if (chord1.voice != chord2.voice)
continue;
for (auto ¬e2: chord2.notes) {
if (note2.pitch != note1.pitch)
continue;
qDebug("Midi import: overlapping events: %d+%d %d+%d",
onTime1.ticks(), note1.offTime.ticks(),
onTime2.ticks(), note2.offTime.ticks());
note1.offTime = onTime2;
i2 = std::prev(chords.end());
break;
}
}
if (note1.offTime <= ReducedFraction(0, 1)) {
qDebug("removeOverlappingNotes: duration <= 0: drop note at %d",
onTime1.ticks());
continue;
}
}
} // for note1
}
}
ReducedFraction ReducedFraction::reduced() const
{
const int tmp = gcd(numerator_, denominator_);
checkDivisionOverflow(numerator_, tmp);
checkDivisionOverflow(denominator_, tmp);
return ReducedFraction(numerator_ / tmp, denominator_ / tmp);
}
void quantizeChords(std::multimap<ReducedFraction, MidiChord> &chords,
const std::multimap<ReducedFraction, MidiTuplet::TupletData> &tupletEvents,
const TimeSigMap *sigmap)
{
std::multimap<ReducedFraction, MidiChord> quantizedChords;
for (auto &chordEvent: chords) {
MidiChord chord = chordEvent.second; // copy chord
auto onTime = chordEvent.first;
const auto barStart = findBarStart(onTime, sigmap);
if (chord.quantizedOnTime == ReducedFraction(-1, 1)) {
const auto raster = findQuantRaster(onTime, chord.voice, tupletEvents, chords, sigmap);
onTime = barStart + Quantize::quantizeValue(onTime - barStart, raster);
}
else {
onTime = chord.quantizedOnTime;
chord.quantizedOnTime = {-1, 1};
}
for (auto it = chord.notes.begin(); it != chord.notes.end(); ) {
MidiNote ¬e = *it;
if (note.quantizedOffTime == ReducedFraction(-1, 1)) {
auto offTime = note.offTime;
auto raster = findQuantRaster(offTime, chord.voice, tupletEvents, chords, sigmap);
if (Meter::isSimpleNoteDuration(raster)) // offTime is not inside tuplet
raster = reduceRasterIfDottedNote(note.offTime - chordEvent.first, raster);
offTime = barStart + Quantize::quantizeValue(offTime - barStart, raster);
note.offTime = offTime;
}
else {
note.offTime = note.quantizedOffTime;
note.quantizedOffTime = {-1, 1};
}
if (note.offTime - onTime < MChord::minAllowedDuration()) {
it = chord.notes.erase(it);
qDebug() << "quantizeChords: note was removed due to its short length";
continue;
}
++it;
}
if (!chord.notes.isEmpty())
quantizedChords.insert({onTime, chord});
}
std::swap(chords, quantizedChords);
}
bool areDurationsEqual(
const QList<std::pair<ReducedFraction, TDuration> > &durations,
const ReducedFraction &desiredLen)
{
ReducedFraction sum(0, 1);
for (const auto &d: durations)
sum += ReducedFraction(d.second.fraction()) / d.first;
return desiredLen == desiredLen;
}
ReducedFraction ReducedFraction::reduced() const
{
const int tmp = gcd(numerator_, denominator_);
Q_ASSERT_X(!isDivisionOverflow(numerator_, tmp),
"ReducedFraction::reduced", "Division overflow");
Q_ASSERT_X(!isDivisionOverflow(denominator_, tmp),
"ReducedFraction::reduced", "Division overflow");
return ReducedFraction(numerator_ / tmp, denominator_ / tmp);
}
ReducedFraction quantizeValue(const ReducedFraction &value,
const ReducedFraction &raster)
{
const auto valueReduced = value.reduced();
const auto rasterReduced = raster.reduced();
int valNum = valueReduced.numerator() * rasterReduced.denominator();
const int rastNum = rasterReduced.numerator() * valueReduced.denominator();
const int commonDen = valueReduced.denominator() * rasterReduced.denominator();
valNum = ((valNum + rastNum / 2) / rastNum) * rastNum;
return ReducedFraction(valNum, commonDen).reduced();
}
void minimizeNumberOfRests(
std::multimap<ReducedFraction, MidiChord> &chords,
const TimeSigMap *sigmap,
const std::multimap<ReducedFraction, MidiTuplet::TupletData> &tuplets)
{
for (auto it = chords.begin(); it != chords.end(); ++it) {
for (MidiNote ¬e: it->second.notes) {
const auto barStart = MidiBar::findBarStart(note.offTime, sigmap);
const auto barFraction = ReducedFraction(
sigmap->timesig(barStart.ticks()).timesig());
auto durationStart = (it->first > barStart) ? it->first : barStart;
if (it->second.isInTuplet) {
const auto &tuplet = it->second.tuplet->second;
if (note.offTime >= tuplet.onTime + tuplet.len)
durationStart = tuplet.onTime + tuplet.len;
}
auto endTime = (barStart == note.offTime)
? barStart : barStart + barFraction;
if (note.isInTuplet) {
const auto &tuplet = note.tuplet->second;
if (note.offTime == tuplet.onTime + tuplet.len)
continue;
endTime = barStart + Quantize::quantizeToLarge(
note.offTime - barStart, tuplet.len / tuplet.tupletNumber);
}
const auto beatLen = Meter::beatLength(barFraction);
const auto beatTime = barStart + Quantize::quantizeToLarge(
note.offTime - barStart, beatLen);
if (endTime > beatTime)
endTime = beatTime;
auto next = std::next(it);
while (next != chords.end()
&& (next->second.voice != it->second.voice
|| next->first < note.offTime)) {
++next;
}
if (next != chords.end()) {
if (next->first < endTime)
endTime = next->first;
if (next->second.isInTuplet && !note.isInTuplet) {
const auto &tuplet = next->second.tuplet->second;
if (tuplet.onTime < endTime)
endTime = tuplet.onTime;
}
}
lengthenNote(note, it->second.voice, it->first, durationStart, endTime,
barStart, barFraction, tuplets);
}
}
}
ReducedFraction findMinDuration(const ReducedFraction &onTime,
const QList<MidiChord> &midiChords,
const ReducedFraction &length)
{
ReducedFraction len = length;
for (const auto &chord: midiChords) {
for (const auto ¬e: chord.notes) {
if ((note.offTime - onTime < len)
&& (note.offTime - onTime != ReducedFraction(0, 1)))
len = note.offTime - onTime;
}
}
return len;
}
void addLyricsToScore(const std::multimap<ReducedFraction, std::string> &lyricTrack,
const Staff *staffAddTo)
{
Score *score = staffAddTo->score();
int textCounter = 0;
for (const auto &e: lyricTrack) {
const auto &tick = e.first;
QString str = MidiCharset::convertToCharset(e.second);
if (tick == ReducedFraction(0, 1)) {
addTitle(score, str, &textCounter);
}
else {
QString text = removeSlashes(str);
score->addLyrics(tick.ticks(), staffAddTo->idx(), text);
}
}
}
ReducedFraction findQuantRaster(
const ReducedFraction &time,
int voice,
const std::multimap<ReducedFraction, MidiTuplet::TupletData> &tupletEvents,
const std::multimap<ReducedFraction, MidiChord> &chords,
const TimeSigMap *sigmap)
{
ReducedFraction raster;
const auto tupletIt = MidiTuplet::findTupletContainsTime(voice, time, tupletEvents);
if (tupletIt != tupletEvents.end() && time > tupletIt->first)
raster = tupletIt->second.tupletQuant; // quantize onTime with tuplet quant
else {
// quantize onTime with regular quant
const auto startBarTick = findBarStart(time, sigmap);
const auto endBarTick = startBarTick
+ ReducedFraction(sigmap->timesig(startBarTick.ticks()).timesig());
const auto startBarChordIt = MChord::findFirstChordInRange(
chords, startBarTick, endBarTick);
raster = findRegularQuantRaster(startBarChordIt, chords.end(), endBarTick);
}
return raster;
}
void addLyricsToScore(
const std::multimap<ReducedFraction, std::string> &lyricTrack,
const std::vector<std::pair<ReducedFraction, ReducedFraction>> &matchedLyricTimes,
const Staff *staffAddTo)
{
Score *score = staffAddTo->score();
addTitleIfAny(lyricTrack, score);
for (const auto &timePair: matchedLyricTimes) {
const auto quantizedTime = timePair.first;
const auto originalTime = timePair.second;
const auto it = lyricTrack.find(originalTime);
Q_ASSERT_X(it != lyricTrack.end(),
"MidiLyrics::addLyricsToScore", "Lyric time not found");
QString text = MidiCharset::convertToCharset(it->second);
if (originalTime != ReducedFraction(0, 1) || !isTitlePrefix(text)) { // not title
score->addLyrics(quantizedTime.ticks(), staffAddTo->idx(),
removeSlashes(text).toHtmlEscaped());
}
}
}
ReducedFraction ReducedFraction::fromTicks(int ticks)
{
return ReducedFraction(ticks, MScore::division * 4).reduced();
}
void setToNegative(ReducedFraction &v1, ReducedFraction &v2, ReducedFraction &v3)
{
v1 = ReducedFraction(-1, 1);
v2 = ReducedFraction(-1, 1);
v3 = ReducedFraction(-1, 1);
}
void SwingDetector::reset()
{
elements.clear();
sumLen = ReducedFraction(0);
}
void createInstruments(Score *score, QList<MTrack> &tracks)
{
const auto& opers = preferences.midiImportOperations;
const auto &instrListOption = opers.data()->trackOpers.msInstrList;
const int ntracks = tracks.size();
for (int idx = 0; idx < ntracks; ++idx) {
MTrack& track = tracks[idx];
Part* part = new Part(score);
const auto &instrList = instrListOption.value(track.indexOfOperation);
const InstrumentTemplate *instr = nullptr;
if (!instrList.empty()) {
const int instrIndex = opers.data()->trackOpers.msInstrIndex.value(
track.indexOfOperation);
instr = instrList[instrIndex];
if (instr)
part->initFromInstrTemplate(instr);
}
if (areNext3OrganStaff(idx, tracks))
part->setStaves(3);
else if (areNext2GrandStaff(idx, tracks))
part->setStaves(2);
else
part->setStaves(1);
if (part->nstaves() == 1) {
if (track.mtrack->drumTrack()) {
part->staff(0)->setStaffType(0, StaffType::preset(StaffTypes::PERC_DEFAULT));
if (!instr) {
part->instrument()->setDrumset(smDrumset);
}
}
}
else {
if (!instr) {
part->staff(0)->setBarLineSpan(2);
part->staff(0)->setBracket(0, BracketType::BRACE);
}
else {
part->staff(0)->setBarLineSpan(instr->barlineSpan[0]);
part->staff(0)->setBracket(0, instr->bracket[0]);
}
part->staff(0)->setBracketSpan(0, 2);
}
if (instr) {
for (int i = 0; i != part->nstaves(); ++i) {
if (instr->staffTypePreset)
part->staff(i)->setStaffType(0, instr->staffTypePreset);
part->staff(i)->setLines(0, instr->staffLines[i]);
part->staff(i)->setSmall(0, instr->smallStaff[i]);
part->staff(i)->setDefaultClefType(instr->clefTypes[i]);
}
}
for (int i = 0; i != part->nstaves(); ++i) {
if (i > 0)
++idx;
tracks[idx].staff = part->staff(i);
}
// only importing a single volume per track here, skip when multiple volumes
// are defined, or the single volume is not defined on tick 0.
if (track.volumes.size() == 1) {
for (auto &i: track.volumes) {
if (i.first == ReducedFraction(0, 1)) {
part->instrument()->channel(0)->volume = i.second;
}
}
}
score->appendPart(part);
}
}
void lengthenNote(
MidiNote ¬e,
int voice,
const ReducedFraction ¬eOnTime,
const ReducedFraction &durationStart,
const ReducedFraction &endTime,
const ReducedFraction &barStart,
const ReducedFraction &barFraction,
const std::multimap<ReducedFraction, MidiTuplet::TupletData> &tuplets)
{
if (endTime <= note.offTime)
return;
const auto &opers = preferences.midiImportOperations.data()->trackOpers;
const int currentTrack = preferences.midiImportOperations.currentTrack();
const bool useDots = opers.useDots.value(currentTrack);
const auto tupletsForDuration = MidiTuplet::findTupletsInBarForDuration(
voice, barStart, note.offTime, endTime - note.offTime, tuplets);
Q_ASSERT_X(note.quant != ReducedFraction(-1, 1),
"Simplify::lengthenNote", "Note quant value was not set");
const auto origNoteDurations = Meter::toDurationList(
durationStart - barStart, note.offTime - barStart, barFraction,
tupletsForDuration, Meter::DurationType::NOTE, useDots, false);
const auto origRestDurations = Meter::toDurationList(
note.offTime - barStart, endTime - barStart, barFraction,
tupletsForDuration, Meter::DurationType::REST, useDots, false);
Q_ASSERT_X(areDurationsEqual(origNoteDurations, note.offTime - durationStart),
"Simplify::lengthenNote", "Too short note durations remaining");
Q_ASSERT_X(areDurationsEqual(origRestDurations, endTime - note.offTime),
"Simplify::lengthenNote", "Too short rest durations remaining");
// double - because can be + 0.5 for dots
double minNoteDurationCount = MidiDuration::durationCount(origNoteDurations);
double minRestDurationCount = MidiDuration::durationCount(origRestDurations);
ReducedFraction bestOffTime(-1, 1);
for (ReducedFraction offTime = note.offTime + note.quant;
offTime <= endTime; offTime += note.quant) {
double noteDurationCount = 0;
double restDurationCount = 0;
const auto noteDurations = Meter::toDurationList(
durationStart - barStart, offTime - barStart, barFraction,
tupletsForDuration, Meter::DurationType::NOTE, useDots, false);
Q_ASSERT_X(areDurationsEqual(noteDurations, offTime - durationStart),
"Simplify::lengthenNote", "Too short note durations remaining");
noteDurationCount += MidiDuration::durationCount(noteDurations);
if (offTime < endTime) {
const auto restDurations = Meter::toDurationList(
offTime - barStart, endTime - barStart, barFraction,
tupletsForDuration, Meter::DurationType::REST, useDots, false);
Q_ASSERT_X(areDurationsEqual(restDurations, endTime - offTime),
"Simplify::lengthenNote", "Too short rest durations remaining");
restDurationCount += MidiDuration::durationCount(restDurations);
}
if (noteDurationCount + restDurationCount
< minNoteDurationCount + minRestDurationCount) {
if (opers.isHumanPerformance.value() || noteDurationCount <= 1.5) {
minNoteDurationCount = noteDurationCount;
minRestDurationCount = restDurationCount;
bestOffTime = offTime;
}
}
}
if (bestOffTime == ReducedFraction(-1, 1))
return;
// check for staccato:
// don't apply staccato if note is tied
// (case noteOnTime != durationStart - another bar, for example)
bool hasLossOfAccuracy = false;
const double addedPart = ((bestOffTime - note.offTime)
/ (bestOffTime - durationStart)).toDouble();
const double STACCATO_TOL = 0.3;
if (addedPart >= STACCATO_TOL) {
if (noteOnTime == durationStart && minNoteDurationCount <= 1.5)
note.staccato = true;
else
hasLossOfAccuracy = true;
}
// if the difference is only in one note/rest and there is some loss of accuracy -
// discard change because it silently reduces duration accuracy
// without significant improvement of readability
if (!opers.isHumanPerformance.value()
&& (origNoteDurations.size() + origRestDurations.size())
- (minNoteDurationCount + minRestDurationCount) <= 1
&& !hasComplexBeamedDurations(origNoteDurations)
&& !hasComplexBeamedDurations(origRestDurations)
&& hasLossOfAccuracy) {
return;
}
note.offTime = bestOffTime;
}
ReducedFraction ReducedFraction::absValue() const
{
return ReducedFraction(qAbs(numerator_), qAbs(denominator_));
}
ReducedFraction userTimeSigToFraction(
MidiOperations::TimeSigNumerator timeSigNumerator,
MidiOperations::TimeSigDenominator timeSigDenominator)
{
int numerator = 4;
int denominator = 4;
switch (timeSigNumerator) {
case MidiOperations::TimeSigNumerator::_2:
numerator = 2;
break;
case MidiOperations::TimeSigNumerator::_3:
numerator = 3;
break;
case MidiOperations::TimeSigNumerator::_4:
numerator = 4;
break;
case MidiOperations::TimeSigNumerator::_5:
numerator = 5;
break;
case MidiOperations::TimeSigNumerator::_6:
numerator = 6;
break;
case MidiOperations::TimeSigNumerator::_7:
numerator = 7;
break;
case MidiOperations::TimeSigNumerator::_9:
numerator = 9;
break;
case MidiOperations::TimeSigNumerator::_12:
numerator = 12;
break;
case MidiOperations::TimeSigNumerator::_15:
numerator = 15;
break;
case MidiOperations::TimeSigNumerator::_21:
numerator = 21;
break;
default:
break;
}
switch (timeSigDenominator) {
case MidiOperations::TimeSigDenominator::_2:
denominator = 2;
break;
case MidiOperations::TimeSigDenominator::_4:
denominator = 4;
break;
case MidiOperations::TimeSigDenominator::_8:
denominator = 8;
break;
case MidiOperations::TimeSigDenominator::_16:
denominator = 16;
break;
case MidiOperations::TimeSigDenominator::_32:
denominator = 32;
break;
default:
break;
}
return ReducedFraction(numerator, denominator);
}
TupletInfo findTupletApproximation(
const ReducedFraction &tupletLen,
int tupletNumber,
const ReducedFraction &basicQuant,
const ReducedFraction &startTupletTime,
const std::multimap<ReducedFraction, MidiChord>::iterator &startChordIt,
const std::multimap<ReducedFraction, MidiChord>::iterator &endChordIt)
{
TupletInfo tupletInfo;
tupletInfo.tupletNumber = tupletNumber;
tupletInfo.onTime = startTupletTime;
tupletInfo.len = tupletLen;
const auto tupletNoteLen = tupletLen / tupletNumber;
struct Error
{
bool operator<(const Error &e) const
{
if (tupletError < e.tupletError)
return true;
if (tupletError > e.tupletError)
return false;
return (tupletRegularDiff < e.tupletRegularDiff);
}
ReducedFraction tupletError;
ReducedFraction tupletRegularDiff;
};
struct Candidate
{
int posIndex;
std::multimap<ReducedFraction, MidiChord>::iterator chord;
ReducedFraction regularError;
};
std::multimap<Error, Candidate> chordCandidates;
for (int posIndex = 0; posIndex != tupletNumber; ++posIndex) {
const auto tupletNotePos = startTupletTime + tupletNoteLen * posIndex;
for (auto it = startChordIt; it != endChordIt; ++it) {
if (it->first < tupletNotePos - tupletNoteLen / 2)
continue;
if (it->first > tupletNotePos + tupletNoteLen / 2)
break;
const auto tupletError = (it->first - tupletNotePos).absValue();
const auto regularError = Quantize::findOnTimeQuantError(*it, basicQuant);
const auto diff = tupletError - regularError;
chordCandidates.insert({{tupletError, diff}, {posIndex, it, regularError}});
}
}
std::set<std::pair<const ReducedFraction, MidiChord> *> usedChords;
std::set<int> usedPosIndexes;
ReducedFraction diffSum;
int firstChordIndex = 0;
for (const auto &candidate: chordCandidates) {
if (diffSum + candidate.first.tupletRegularDiff > ReducedFraction(0, 1))
break;
const Candidate &c = candidate.second;
if (usedPosIndexes.find(c.posIndex) != usedPosIndexes.end())
continue;
if (usedChords.find(&*c.chord) != usedChords.end())
continue;
usedChords.insert(&*c.chord);
usedPosIndexes.insert(c.posIndex);
diffSum += candidate.first.tupletRegularDiff;
tupletInfo.chords.insert({c.chord->first, c.chord});
tupletInfo.tupletSumError += candidate.first.tupletError;
tupletInfo.regularSumError += c.regularError;
// if chord was inserted to the beginning - remember its pos index
if (c.chord->first == tupletInfo.chords.begin()->first)
firstChordIndex = c.posIndex;
}
tupletInfo.firstChordIndex = firstChordIndex;
return tupletInfo;
}
