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#include "importmidi_drum.h"
#include "importmidi_inner.h"
#include "mscore/preferences.h"
#include "libmscore/staff.h"
#include "libmscore/drumset.h"
#include "importmidi_chord.h"
#include "importmidi_operations.h"
#include "libmscore/score.h"
#include "midi/midifile.h"
#include <set>
namespace Ms {
extern Preferences preferences;
namespace MidiDrum {
#ifdef IMPORTMIDI_DEBUG
bool haveNonZeroVoices(const std::multimap<ReducedFraction, MidiChord> &chords)
{
for (const auto &chordEvent: chords) {
if (chordEvent.second.voice != 0)
return false;
}
return true;
}
#endif
void splitChord(
std::multimap<ReducedFraction, MidiChord>::iterator &chordIt,
const QSet<int> ¬esToMove,
std::multimap<ReducedFraction, MidiChord> &chords)
{
MidiChord &chord = chordIt->second;
auto ¬es = chord.notes;
if (notesToMove.size() == notes.size()) { // just move chord to another voice
chord.voice = 1;
}
else { // split chord
MidiChord newChord(chord);
newChord.notes.clear();
newChord.voice = 1;
QList<MidiNote> updatedOldNotes;
for (int i = 0; i != notes.size(); ++i) {
if (notesToMove.contains(i))
newChord.notes.append(notes[i]);
else
updatedOldNotes.append(notes[i]);
}
notes = updatedOldNotes;
Q_ASSERT_X(!notes.isEmpty(),
"MidiDrum::splitChord", "Old chord notes are empty");
Q_ASSERT_X(!newChord.notes.isEmpty(),
"MidiDrum::splitChord", "New chord notes are empty");
chordIt = chords.insert({chordIt->first, newChord});
}
}
void splitDrumVoices(std::multimap<int, MTrack> &tracks)
{
for (auto &track: tracks) {
MTrack &mtrack = track.second;
auto &chords = mtrack.chords;
if (chords.empty())
continue;
const Drumset* const drumset = mtrack.mtrack->drumTrack() ? smDrumset : 0;
if (!drumset)
continue;
// all chords of drum track should have voice == 0
// because allowedVoices == V_1 (see MidiImportOperations)
// also, all chords should have different onTime values
Q_ASSERT_X(MChord::areOnTimeValuesDifferent(chords),
"MidiDrum::splitDrumVoices",
"onTime values of chords are equal but should be different");
Q_ASSERT_X(haveNonZeroVoices(chords),
"MidiDrum::splitDrumVoices",
"All voices of drum track should be zero here");
for (auto chordIt = chords.begin(); chordIt != chords.end(); ++chordIt) {
auto ¬es = chordIt->second.notes;
// search for the drumset pitches with voice = 1
QSet<int> notesToMove;
for (int i = 0; i != notes.size(); ++i) {
const int pitch = notes[i].pitch;
if (drumset->isValid(pitch) && drumset->voice(pitch) == 1)
notesToMove.insert(i);
}
if (notesToMove.isEmpty())
continue;
splitChord(chordIt, notesToMove, chords);
}
}
}
MTrack& getNewTrack(std::map<int, MTrack> &newTracks,
const MTrack &drumTrack,
int pitch)
{
auto newTrackIt = newTracks.find(pitch);
if (newTrackIt == newTracks.end()) {
newTrackIt = newTracks.insert({pitch, drumTrack}).first;
MTrack &newTrack = newTrackIt->second;
// chords are copied and then cleared -
// not very efficient way but it's more safe for possible
// future additions of new fields in MTrack
newTrack.chords.clear();
newTrack.name = smDrumset->name(pitch);
Q_ASSERT(newTrack.tuplets.empty());
}
return newTrackIt->second;
}
std::map<int, MTrack> splitDrumTrack(const MTrack &drumTrack)
{
std::map<int, MTrack> newTracks; // <percussion note pitch, track>
if (drumTrack.chords.empty())
return newTracks;
for (const auto &chordEvent: drumTrack.chords) {
const auto &onTime = chordEvent.first;
const MidiChord &chord = chordEvent.second;
for (const auto ¬e: chord.notes) {
MidiChord newChord(chord);
newChord.notes.clear();
newChord.notes.push_back(note);
MTrack &newTrack = getNewTrack(newTracks, drumTrack, note.pitch);
newTrack.chords.insert({onTime, newChord});
}
}
return newTracks;
}
void splitDrumTracks(std::multimap<int, MTrack> &tracks)
{
for (auto it = tracks.begin(); it != tracks.end(); ++it) {
if (!it->second.mtrack->drumTrack() || it->second.chords.empty())
continue;
const auto &opers = preferences.midiImportOperations.data()->trackOpers;
if (!opers.doStaffSplit.value(it->second.indexOfOperation))
continue;
const std::map<int, MTrack> newTracks = splitDrumTrack(it->second);
const int trackIndex = it->first;
it = tracks.erase(it);
for (auto i = newTracks.rbegin(); i != newTracks.rend(); ++i)
it = tracks.insert({trackIndex, i->second});
}
}
void setBracket(Staff *&staff, int &counter)
{
if (staff && counter > 1) {
staff->setBracket(0, BracketType::NORMAL);
staff->setBracketSpan(0, counter);
}
if (counter)
counter = 0;
if (staff)
staff = nullptr;
}
void setStaffBracketForDrums(QList<MTrack> &tracks)
{
int counter = 0;
Staff *firstDrumStaff = nullptr;
int opIndex = -1;
for (const MTrack &track: tracks) {
if (track.mtrack->drumTrack()) {
if (opIndex != track.indexOfOperation) {
opIndex = track.indexOfOperation;
setBracket(firstDrumStaff, counter);
firstDrumStaff = track.staff;
}
++counter;
}
else
setBracket(firstDrumStaff, counter);
}
setBracket(firstDrumStaff, counter);
}
} // namespace MidiDrum
} // namespace Ms
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