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MuseScore/mscore/bb.cpp
Joachim Schmitz 632f830f5f Fix #275218: fix MSVC compiler warnings 
* Warnings C4304, C4804 and C4838.
* Warnings C4065 and most C4702 (all but two).
* Warnings C4701.
* Warnings C4244.
* Warnings C4457.
* Warnings C4459.
* Some warnings C4456, due to nested `foreach` loops.
2018-08-14 10:03:49 +02:00

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//=============================================================================
// MuseScore
// Music Composition & Notation
// $Id: bb.cpp 5427 2012-03-07 12:41:34Z wschweer $
//
// Copyright (C) 2008-2011 Werner Schweer
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2
// as published by the Free Software Foundation and appearing in
// the file LICENCE.GPL
//=============================================================================
#include "libmscore/mscore.h"
#include "bb.h"
#include "libmscore/score.h"
#include "libmscore/part.h"
#include "libmscore/staff.h"
#include "libmscore/text.h"
#include "libmscore/box.h"
#include "libmscore/slur.h"
#include "libmscore/tie.h"
#include "libmscore/note.h"
#include "libmscore/chord.h"
#include "libmscore/rest.h"
#include "libmscore/drumset.h"
#include "libmscore/utils.h"
#include "libmscore/chordlist.h"
#include "libmscore/harmony.h"
#include "libmscore/layoutbreak.h"
#include "libmscore/key.h"
#include "libmscore/pitchspelling.h"
#include "libmscore/measure.h"
#include "libmscore/segment.h"
#include "libmscore/keysig.h"
namespace Ms {
//---------------------------------------------------------
// BBTrack
//---------------------------------------------------------
BBTrack::BBTrack(BBFile* f)
{
bb = f;
_outChannel = -1;
_drumTrack = false;
}
BBTrack::~BBTrack()
{
}
//---------------------------------------------------------
// MNote
// special Midi Note
//---------------------------------------------------------
struct MNote {
Event mc;
QList<Tie*> ties;
MNote(const Event& _mc) : mc(_mc) {
for (int i = 0; i < mc.notes().size(); ++i)
ties.append(0);
}
};
//---------------------------------------------------------
// BBFile
//---------------------------------------------------------
BBFile::BBFile()
{
for (int i = 0; i < MAX_BARS; ++i)
_barType[i] = 0;
bbDivision = 120;
}
//---------------------------------------------------------
// BBFile
//---------------------------------------------------------
BBFile::~BBFile()
{
}
//---------------------------------------------------------
// read
// return false on error
//---------------------------------------------------------
bool BBFile::read(const QString& name)
{
_siglist.clear();
_siglist.add(0, Fraction(4, 4)); // debug
_path = name;
QFile f(name);
if (!f.open(QIODevice::ReadOnly)) {
return false;
}
ba = f.readAll();
f.close();
a = (const unsigned char*) ba.data();
size = ba.size();
//---------------------------------------------------
// read version
//---------------------------------------------------
int idx = 0;
_version = a[idx++];
switch(_version) {
case 0x43:
case 0x44:
case 0x45:
case 0x46:
case 0x47:
case 0x48:
case 0x49:
break;
default:
qDebug("BB: unknown file version %02x", _version);
return false;
}
qDebug("read <%s> version 0x%02x", qPrintable(name), _version);
//---------------------------------------------------
// read title
//---------------------------------------------------
int len = a[idx++];
_title = new char[len+1];
for (int i = 0; i < len; ++i)
_title[i] = a[idx++];
_title[len] = 0;
//---------------------------------------------------
// read style(timesig), key and bpm
//---------------------------------------------------
++idx;
++idx;
_style = a[idx++] - 1;
if (_style < 0 || _style >= int(sizeof(styles)/sizeof(*styles))) {
qDebug("Import bb: unknown style %d", _style + 1);
return false;
}
_key = a[idx++];
// map D# G# A# to Eb Ab Db
// major C, Db, D, Eb, E, F, Gb, G, Ab, A, Bb, B, C#, D#, F#, G#, A#
// minor C, Db, D, Eb, E, F, Gb, G, Ab, A, Bb, B, C#, D#, F#, G#, A#
static int kt[] = {
0, 0, -5, 2, -3, 4, -1, -6, 1, -4, 3, -2, 5, 7, -3, 6, -4, -2,
-3, 4, -1, -6, 1, -4, 3, -2, 5, 0, -5, 2, 4, 6, 3, 5, 7
};
if (_key >= int (sizeof(kt)/sizeof(*kt))) {
qDebug("bad key %d", _key);
return false;
}
_key = kt[_key];
_bpm = a[idx] + (a[idx+1] << 8);
idx += 2;
qDebug("Title <%s>", _title);
qDebug("style %d", _style);
qDebug("key %d", _key);
qDebug("sig %d/%d", timesigZ(), timesigN());
qDebug("bpm %d", _bpm);
//---------------------------------------------------
// read bar types
//---------------------------------------------------
int bar = a[idx++]; // starting bar number
while (bar < 255) {
int val = a[idx++];
if (val == 0)
bar += a[idx++];
else {
qDebug("bar type: bar %d val %d", bar, val);
_barType[bar++] = val;
}
}
//---------------------------------------------------
// read chord extensions
//---------------------------------------------------
int beat;
for (beat = 0; beat < MAX_BARS * 4;) {
int val = a[idx++];
if (val == 0)
beat += a[idx++];
else {
BBChord c;
c.extension = val;
c.beat = beat * (timesigZ() / timesigN());
++beat;
_chords.append(c);
}
}
//---------------------------------------------------
// read chord root
//---------------------------------------------------
int roots = 0;
int maxbeat = 0;
for (beat = 0; beat < MAX_BARS * 4;) {
int val = a[idx++];
if (val == 0)
beat += a[idx++];
else {
int root = val % 18;
int bass = (root - 1 + val / 18) % 18 + 1;
if (root == bass)
bass = 0;
int ibeat = beat * (timesigZ() / timesigN());
if (ibeat != _chords[roots].beat) {
qDebug("import bb: inconsistent chord type and root beat");
return false;
}
_chords[roots].root = root;
_chords[roots].bass = bass;
if (maxbeat < beat)
maxbeat = beat;
++roots;
++beat;
}
}
_measures = ((maxbeat + timesigZ() - 1) / timesigZ()) + 1;
if (roots != _chords.size()) {
qDebug("import bb: roots %d != extensions %d", roots, _chords.size());
return false;
}
qDebug("Measures %d", _measures);
#if 0
qDebug("================chords=======================");
foreach(BBChord c, _chords) {
qDebug("chord beat %3d bass %d root %d extension %d",
c.beat, c.bass, c.root, c.extension);
}
qDebug("================chords=======================");
#endif
if (a[idx] == 1) { //??
qDebug("Skip 0x%02x at 0x%04x", a[idx], idx);
++idx;
}
_startChorus = a[idx++];
_endChorus = a[idx++];
_repeats = a[idx++];
qDebug("start chorus %d end chorus %d repeats %d, pos now 0x%x",
_startChorus, _endChorus, _repeats, idx);
if (_startChorus >= _endChorus) {
_startChorus = 0;
_endChorus = 0;
_repeats = 1;
}
//---------------------------------------------------
// read style file
//---------------------------------------------------
bool found = false;
for (int i = idx; i < size; ++i) {
if (a[i] == 0x42) {
if (a[i+1] < 16) {
for (int k = i+2; k < (i+18); ++k) {
if (a[k] == '.' && a[k+1] == 'S' && a[k+2] == 'T' && a[k+3] == 'Y') {
found = true;
break;
}
}
}
if (found) {
idx = i + 1;
break;
}
}
}
if (!found) {
qDebug("import bb: style file not found");
return false;
}
qDebug("read styleName at 0x%x", idx);
len = a[idx++];
_styleName = new char[len+1];
for (int i = 0; i < len; ++i)
_styleName[i] = a[idx++];
_styleName[len] = 0;
qDebug("style name <%s>", _styleName);
// read midi events
int eventStart = a[size-4] + a[size-3] * 256;
int eventCount = a[size-2] + a[size-1] * 256;
int endTick = _measures * bbDivision * 4 * timesigZ() / timesigN();
if (eventCount == 0) {
qDebug("no melody");
return true;
}
else {
idx = eventStart;
qDebug("melody found at 0x%x", idx);
int i = 0;
int lastLen = 0;
for (i = 0; i < eventCount; ++i, idx+=12) {
int type = a[idx + 4] & 0xf0;
if (type == 0x90) {
int channel = a[idx + 7];
BBTrack* track = 0;
foreach (BBTrack* t, _tracks) {
if (t->outChannel() == channel) {
track = t;
break;
}
}
if (track == 0) {
track = new BBTrack(this);
track->setOutChannel(channel);
_tracks.append(track);
}
int tick = a[idx] + (a[idx+1]<<8) + (a[idx+2]<<16) + (a[idx+3]<<24);
tick -= 4 * bbDivision;
if (tick >= endTick) {
qDebug("event tick %d > %d", tick, endTick);
continue;
}
Event note(ME_NOTE);
note.setOntime((tick * MScore::division) / bbDivision);
note.setPitch(a[idx + 5]);
note.setVelo(a[idx + 6]);
note.setChannel(channel);
int len = a[idx+8] + (a[idx+9]<<8) + (a[idx+10]<<16) + (a[idx+11]<<24);
if (len == 0) {
if (lastLen == 0) {
qDebug("note event of len 0 at idx %04x", idx);
continue;
}
len = lastLen;
}
lastLen = len;
note.setDuration((len * MScore::division) / bbDivision);
track->append(note);
}
else if (type == 0xb0 || type == 0xc0) {
// ignore controller
}
else if (type == 0)
break;
else {
qDebug("unknown event type 0x%02x at x%04x", a[idx + 4], idx);
break;
}
}
qDebug("Events found x%02x (%d)", i, i);
}
return true;
}
//---------------------------------------------------------
// importBB
// return true on success
//---------------------------------------------------------
Score::FileError importBB(MasterScore* score, const QString& name)
{
BBFile bb;
if(!QFileInfo(name).exists())
return Score::FileError::FILE_NOT_FOUND;
if (!bb.read(name)) {
qDebug("Cannot open file <%s>", qPrintable(name));
return Score::FileError::FILE_OPEN_ERROR;
}
score->style().set(Sid::chordsXmlFile, true);
score->style().chordList()->read("chords.xml");
*(score->sigmap()) = bb.siglist();
QList<BBTrack*>* tracks = bb.tracks();
int ntracks = tracks->size();
if (ntracks == 0) // no events?
ntracks = 1;
for (int i = 0; i < ntracks; ++i) {
Part* part = new Part(score);
Staff* s = new Staff(score);
s->setPart(part);
part->insertStaff(s, 0);
score->staves().append(s);
score->appendPart(part);
}
//---------------------------------------------------
// create measures
//---------------------------------------------------
for (int i = 0; i < bb.measures(); ++i) {
Measure* measure = new Measure(score);
int tick = score->sigmap()->bar2tick(i, 0);
measure->setTick(tick);
Fraction ts = score->sigmap()->timesig(tick).timesig();
measure->setTimesig(ts);
measure->setLen(ts);
score->measures()->add(measure);
}
//---------------------------------------------------
// create notes
//---------------------------------------------------
foreach (BBTrack* track, *tracks)
track->cleanup();
if (tracks->isEmpty()) {
for (MeasureBase* mb = score->first(); mb; mb = mb->next()) {
if (mb->type() != ElementType::MEASURE)
continue;
Measure* measure = (Measure*)mb;
Rest* rest = new Rest(score, TDuration(TDuration::DurationType::V_MEASURE));
rest->setDuration(measure->len());
rest->setTrack(0);
Segment* s = measure->getSegment(SegmentType::ChordRest, measure->tick());
s->add(rest);
}
}
else {
int staffIdx = 0;
foreach (BBTrack* track, *tracks)
bb.convertTrack(score, track, staffIdx++);
}
for (MeasureBase* mb = score->first(); mb; mb = mb->next()) {
if (mb->type() != ElementType::MEASURE)
continue;
Measure* measure = (Measure*)mb;
Segment* s = measure->findSegment(SegmentType::ChordRest, measure->tick());
if (s == 0) {
Rest* rest = new Rest(score, TDuration(TDuration::DurationType::V_MEASURE));
rest->setDuration(measure->len());
rest->setTrack(0);
Segment* s = measure->getSegment(SegmentType::ChordRest, measure->tick());
s->add(rest);
}
}
score->spell();
//---------------------------------------------------
// create title
//---------------------------------------------------
Text* text = new Text(score, Tid::TITLE);
text->setPlainText(bb.title());
MeasureBase* measure = score->first();
if (measure->type() != ElementType::VBOX) {
measure = new VBox(score);
measure->setTick(0);
measure->setNext(score->first());
score->measures()->add(measure);
}
measure->add(text);
//---------------------------------------------------
// create chord symbols
//---------------------------------------------------
static const int table[] = {
//C Db, D, Eb, E, F, Gb, G, Ab, A, Bb, B, C#, D#, F# G# A#
14, 9, 16, 11, 18, 13, 8, 15, 10, 17, 12, 19, 21, 23, 20, 22, 24
};
foreach(const BBChord& c, bb.chords()) {
int tick = c.beat * MScore::division;
// qDebug("CHORD %d %d", c.beat, tick);
Measure* m = score->tick2measure(tick);
if (m == 0) {
qDebug("import BB: measure for tick %d not found", tick);
continue;
}
Segment* s = m->getSegment(SegmentType::ChordRest, tick);
Harmony* h = new Harmony(score);
h->setTrack(0);
h->setRootTpc(table[c.root-1]);
if (c.bass > 0)
h->setBaseTpc(table[c.bass-1]);
else
h->setBaseTpc(Tpc::TPC_INVALID);
h->setId(c.extension);
h->getDescription();
h->render();
s->add(h);
}
//---------------------------------------------------
// insert layout breaks
// add chorus repeat
//---------------------------------------------------
int startChorus = bb.startChorus() - 1;
int endChorus = bb.endChorus() - 1;
int n = 0;
for (MeasureBase* mb = score->first(); mb; mb = mb->next()) {
if (mb->type() != ElementType::MEASURE)
continue;
Measure* measure = (Measure*)mb;
if (n && (n % 4) == 0) {
LayoutBreak* lb = new LayoutBreak(score);
lb->setLayoutBreakType(LayoutBreak::Type::LINE);
measure->add(lb);
}
if (startChorus == n)
measure->setRepeatStart(true);
else if (endChorus == n) {
measure->setRepeatEnd(true);
measure->setRepeatCount(bb.repeats());
}
++n;
}
foreach(Staff* staff, score->staves()) {
int tick = 0;
KeySigEvent ke;
ke.setKey(Key(bb.key()));
staff->setKey(tick, ke);
KeySig* keysig = new KeySig(score);
keysig->setTrack((score->staffIdx(staff->part()) + staff->rstaff()) * VOICES);
keysig->setKey(Key(bb.key()));
Measure* mks = score->tick2measure(tick);
Segment* sks = mks->getSegment(SegmentType::KeySig, tick);
sks->add(keysig);
}
score->fixTicks();
return Score::FileError::FILE_NO_ERROR;
}
//---------------------------------------------------------
// processPendingNotes
//---------------------------------------------------------
int BBFile::processPendingNotes(Score* score, QList<MNote*>* notes, int len, int track)
{
Staff* cstaff = score->staff(track/VOICES);
const Instrument* instrument = cstaff->part()->instrument();
const Drumset* drumset = instrument->drumset();
bool useDrumset = instrument->useDrumset();
int tick = notes->at(0)->mc.ontime();
//
// look for len of shortest note
//
foreach (const MNote* n, *notes) {
if (n->mc.duration() < len)
len = n->mc.duration();
}
//
// split notes on measure boundary
//
Measure* measure = score->tick2measure(tick);
if (measure == 0 || (tick >= (measure->tick() + measure->ticks()))) {
qDebug("no measure found for tick %d", tick);
notes->clear();
return len;
}
if ((tick + len) > measure->tick() + measure->ticks())
len = measure->tick() + measure->ticks() - tick;
Chord* chord = new Chord(score);
chord->setTrack(track);
TDuration d;
d.setVal(len);
chord->setDurationType(d);
chord->setDuration(d.fraction());
Segment* s = measure->getSegment(SegmentType::ChordRest, tick);
s->add(chord);
foreach (MNote* n, *notes) {
QList<Event>& nl = n->mc.notes();
for (int i = 0; i < nl.size(); ++i) {
const Event& mn = nl[i];
Note* note = new Note(score);
note->setPitch(mn.pitch(), mn.tpc(), mn.tpc());
note->setTrack(track);
chord->add(note);
if (useDrumset) {
if (!drumset->isValid(mn.pitch())) {
qDebug("unmapped drum note 0x%02x %d", mn.pitch(), mn.pitch());
}
else {
chord->setStemDirection(drumset->stemDirection(mn.pitch()));
}
}
if (n->ties[i]) {
n->ties[i]->setEndNote(note);
n->ties[i]->setTrack(note->track());
note->setTieBack(n->ties[i]);
}
}
if (n->mc.duration() <= len) {
notes->removeAt(notes->indexOf(n));
continue;
}
for (int i = 0; i < nl.size(); ++i) {
const Event& mn = nl[i];
Note* note = chord->findNote(mn.pitch());
n->ties[i] = new Tie(score);
n->ties[i]->setStartNote(note);
note->setTieFor(n->ties[i]);
}
n->mc.setOntime(n->mc.ontime() + len);
n->mc.setDuration(n->mc.duration() - len);
}
return len;
}
//---------------------------------------------------------
// collectNotes
//---------------------------------------------------------
static ciEvent collectNotes(int tick, int voice, ciEvent i, const EventList* el, QList<MNote*>* notes)
{
for (;i != el->end(); ++i) {
const Event& e = *i;
if (e.type() != ME_CHORD)
continue;
if (e.voice() != voice)
continue;
if (e.ontime() > tick)
break;
if (e.ontime() < tick)
continue;
MNote* n = new MNote(e);
notes->append(n);
}
return i;
}
//---------------------------------------------------------
// convertTrack
//---------------------------------------------------------
void BBFile::convertTrack(Score* score, BBTrack* track, int staffIdx)
{
track->findChords();
int voices = track->separateVoices(2);
const EventList el = track->events();
for (int voice = 0; voice < voices; ++voice) {
int tr = staffIdx * VOICES + voice;
QList<MNote*> notes;
int ctick = 0;
ciEvent i = collectNotes(ctick, voice, el.begin(), &el, &notes);
for (; i != el.end();) {
const Event& e = *i;
if (e.type() != ME_CHORD || e.voice() != voice) {
++i;
continue;
}
//
// process pending notes
//
int restLen = e.ontime() - ctick;
// qDebug("ctick %d rest %d ontick %d size %d", ctick, restLen, e.ontime(), notes.size());
if (restLen <= 0)
qFatal("bad restlen ontime %d - ctick %d", e.ontime(), ctick);
while (!notes.isEmpty()) {
int len = processPendingNotes(score, &notes, restLen, tr);
if (len == 0) {
qDebug("processPendingNotes returns zero, restlen %d, track %d", restLen, tr);
ctick += restLen;
restLen = 0;
break;
}
ctick += len;
restLen -= len;
}
// qDebug(" 1.ctick %d rest %d", ctick, restLen);
//
// check for gap and fill with rest
//
if (voice == 0) {
while (restLen > 0) {
int len = restLen;
Measure* measure = score->tick2measure(ctick);
if (measure == 0 || (ctick >= (measure->tick() + measure->ticks()))) { // at end?
ctick += len;
restLen -= len;
break;
}
// split rest on measure boundary
if ((ctick + len) > measure->tick() + measure->ticks()) {
len = measure->tick() + measure->ticks() - ctick;
if (len <= 0) {
qDebug("bad len %d", len);
break;
}
}
TDuration d;
d.setVal(len);
Rest* rest = new Rest(score, d);
rest->setDuration(d.fraction());
rest->setTrack(staffIdx * VOICES);
Segment* s = measure->getSegment(SegmentType::ChordRest, ctick);
s->add(rest);
// qDebug(" add rest %d", len);
ctick += len;
restLen -= len;
}
}
else
ctick += restLen;
// qDebug(" 2.ctick %d rest %d", ctick, restLen);
//
// collect all notes at ctick
//
i = collectNotes(ctick, voice, i, &el, &notes);
}
//
// process pending notes
//
while (!notes.isEmpty()) {
int len = processPendingNotes(score, &notes, 0x7fffffff, tr);
ctick += len;
}
if (voice == 0) {
Measure* measure = score->tick2measure(ctick);
if (measure && (ctick < (measure->tick() + measure->ticks()))) { // at end?
TDuration d;
d.setVal(measure->endTick() - ctick);
Rest* rest = new Rest(score, d);
rest->setDuration(d.fraction());
rest->setTrack(staffIdx * VOICES);
Segment* s = measure->getSegment(SegmentType::ChordRest, ctick);
s->add(rest);
}
}
}
}
//---------------------------------------------------------
// quantize
// process one segment (measure)
//---------------------------------------------------------
void BBTrack::quantize(int startTick, int endTick, EventList* dst)
{
int mintick = MScore::division * 64;
iEvent i = _events.begin();
for (; i != _events.end(); ++i) {
if (i->ontime() >= startTick)
break;
}
iEvent si = i;
for (; i != _events.end(); ++i) {
const Event& e = *i;
if (e.ontime() >= endTick)
break;
if (e.type() == ME_NOTE && (e.duration() < mintick))
mintick = e.duration();
}
if (mintick <= MScore::division / 16) // minimum duration is 1/64
mintick = MScore::division / 16;
else if (mintick <= MScore::division / 8)
mintick = MScore::division / 8;
else if (mintick <= MScore::division / 4)
mintick = MScore::division / 4;
else if (mintick <= MScore::division / 2)
mintick = MScore::division / 2;
else if (mintick <= MScore::division)
mintick = MScore::division;
else if (mintick <= MScore::division * 2)
mintick = MScore::division * 2;
else if (mintick <= MScore::division * 4)
mintick = MScore::division * 4;
else if (mintick <= MScore::division * 8)
mintick = MScore::division * 8;
int raster;
if (mintick > MScore::division)
raster = MScore::division;
else
raster = mintick;
//
// quantize onset
//
for (iEvent i = si; i != _events.end(); ++i) {
Event e = *i;
if (e.ontime() >= endTick)
break;
if (e.type() == ME_NOTE) {
// prefer moving note to the right
int tick = ((e.ontime() + raster/2) / raster) * raster;
int diff = tick - e.ontime();
int len = e.duration() - diff;
e.setOntime(tick);
e.setDuration(len);
}
dst->insert(e);
}
//
// quantize duration
//
for (iEvent i = dst->begin(); i != dst->end(); ++i) {
Event& e = *i;
if (e.type() != ME_NOTE)
continue;
int tick = e.ontime();
int len = e.duration();
int ntick = tick + len;
int nntick = -1;
for (iEvent ii = (i+1); ii != dst->end(); ++ii) {
if (ii->type() == ME_NOTE) {
const Event& ee = *ii;
if (ee.ontime() == tick)
continue;
nntick = ee.ontime();
break;
}
}
if (nntick == -1)
len = quantizeLen(len, raster);
else {
int diff = nntick - ntick;
if (diff > 0) {
// insert rest?
if (diff <= raster)
len = nntick - tick;
else
len = quantizeLen(len, raster);
}
else {
if (diff > -raster)
len = nntick - tick;
else
len = quantizeLen(len, raster);
}
}
e.setDuration(len);
}
}
//---------------------------------------------------------
// cleanup
// - quantize
// - remove overlaps
//---------------------------------------------------------
void BBTrack::cleanup()
{
EventList dl;
//
// quantize
//
int lastTick = 0;
foreach (const Event& e, _events) {
if (e.type() != ME_NOTE)
continue;
int offtime = e.offtime();
if (offtime > lastTick)
lastTick = offtime;
}
int startTick = 0;
for (int i = 1;; ++i) {
int endTick = bb->siglist().bar2tick(i, 0);
quantize(startTick, endTick, &dl);
if (endTick > lastTick)
break;
startTick = endTick;
}
//
//
//
_events.clear();
for(iEvent i = dl.begin(); i != dl.end(); ++i) {
Event& e = *i;
if (e.type() == ME_NOTE) {
iEvent ii = i;
++ii;
for (; ii != dl.end(); ++ii) {
const Event& ee = *ii;
if (ee.type() != ME_NOTE || ee.pitch() != e.pitch())
continue;
if (ee.ontime() >= e.ontime() + e.duration())
break;
e.setDuration(ee.ontime() - e.ontime());
break;
}
if (e.duration() <= 0)
continue;
}
_events.insert(e);
}
}
//---------------------------------------------------------
// findChords
//---------------------------------------------------------
void BBTrack::findChords()
{
EventList dl;
int n = _events.size();
Drumset* drumset;
if (_drumTrack)
drumset = smDrumset;
else
drumset = 0;
int jitter = 3; // tick tolerance for note on/off
for (int i = 0; i < n; ++i) {
Event e = _events[i];
if (e.type() == ME_INVALID)
continue;
if (e.type() != ME_NOTE) {
dl.append(e);
continue;
}
Event note(e);
int ontime = note.ontime();
int offtime = note.offtime();
Event chord(ME_CHORD);
chord.setOntime(ontime);
chord.setDuration(note.duration());
chord.notes().append(note);
int voice = 0;
chord.setVoice(voice);
dl.append(chord);
_events[i].setType(ME_INVALID);
bool useDrumset = false;
if (drumset) {
int pitch = note.pitch();
if (drumset->isValid(pitch)) {
useDrumset = true;
voice = drumset->voice(pitch);
chord.setVoice(voice);
}
}
for (int k = i + 1; k < n; ++k) {
if (_events[k].type() != ME_NOTE)
continue;
Event nn = _events[k];
if (nn.ontime() - jitter > ontime)
break;
if (qAbs(nn.ontime() - ontime) > jitter || qAbs(nn.offtime() - offtime) > jitter)
continue;
int pitch = nn.pitch();
if (useDrumset) {
if (drumset->isValid(pitch) && drumset->voice(pitch) == voice) {
chord.notes().append(nn);
_events[k].setType(ME_INVALID);
}
}
else {
chord.notes().append(nn);
_events[k].setType(ME_INVALID);
}
}
}
_events = dl;
}
//---------------------------------------------------------
// separateVoices
//---------------------------------------------------------
int BBTrack::separateVoices(int /*maxVoices*/)
{
return 1;
}
}
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