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#include "importmidi_chordname.h"
#include "importmidi_inner.h"
#include "importmidi_chord.h"
#include "importmidi_fraction.h"
#include "libmscore/score.h"
#include "libmscore/staff.h"
#include "libmscore/measure.h"
#include "libmscore/harmony.h"
#include "midi/midifile.h"
#include "mscore/preferences.h"
// From XF Format Specifications V 2.01 (January 13, 1999, YAMAHA CORPORATION)
namespace Ms {
namespace MidiChordName {
int readFirstHalf(uchar byte)
{
return (byte >> 4) & 0xf;
}
int readSecondHalf(uchar byte)
{
return byte & 0xf;
}
QString readChordRoot(uchar byte)
{
static const std::vector<QString> inversions = {
"bbb", "bb", "b", "", "#", "##", "###"
};
static const std::vector<QString> notes = {
"", "C", "D", "E", "F", "G", "A", "B"
};
QString chordRoot;
const size_t noteIndex = readSecondHalf(byte);
if (noteIndex < notes.size())
chordRoot += notes[noteIndex];
const size_t inversionIndex = readFirstHalf(byte);
if (inversionIndex < inversions.size())
chordRoot += inversions[inversionIndex];
return chordRoot;
}
QString readChordType(uchar chordTypeIndex)
{
static const std::vector<QString> chordTypes = {
"" // Maj
, "6" // Maj6
, "Maj7"
, "Maj7#11" // Maj7(#11)
, "Maj9" // Maj(9)
, "Maj9" // Maj7(9)
, "6(9)" // Maj6(9)
, "aug"
, "m" // min
, "m6" // min6
, "m7" // min7
, "m7b5" // min7b5
, "m9" // min(9)
, "m9" // min7(9)
, "m7(11)" // min7(11)
, "mMaj7" // minMaj7
, "mMaj9" // minMaj7(9)
, "dim"
, "dim7"
, "7" // 7th
, "7sus4"
, "7b5"
, "9" // 7(9)
, "7#11" // 7(#11)
, "7(13)"
, "7b9" // 7(b9)
, "7b13" // 7(b13)
, "7#9" // 7(#9)
, "Maj7#5" // Maj7aug
, "7#5" // 7aug
, "" // 1+8
, "5" // 1+5
, "sus4"
, "sus2" // 1+2+5
, "N.C." // cc
};
if (chordTypeIndex < chordTypes.size())
return chordTypes[chordTypeIndex];
return "";
}
QString readChordName(const MidiEvent &e)
{
if (e.type() != ME_META || e.metaType() != META_SPECIFIC)
return "";
if (e.len() < 4)
return "";
const uchar *data = e.edata();
if (data[0] != 0x43 || data[1] != 0x7B || data[2] != 0x01)
return "";
QString chordName;
if (e.len() >= 4)
chordName += readChordRoot(data[3]);
if (e.len() >= 5)
chordName += readChordType(data[4]);
if (e.len() >= 6) {
const QString chordRoot = readChordRoot(data[5]);
if (!chordRoot.isEmpty()) {
QString chordType;
if (e.len() >= 7)
chordType = readChordType(data[6]);
if (chordRoot + chordType == chordName)
chordName += "/" + chordRoot;
else
chordName += "/" + chordRoot + chordType;
}
}
return chordName;
}
QString findChordName(
const QList<MidiNote> ¬es,
const std::multimap<ReducedFraction, QString> &chordNames)
{
for (const MidiNote ¬e: notes) {
const auto range = chordNames.equal_range(note.origOnTime);
if (range.second == range.first)
continue;
// found chord names (usually only one)
QString chordName;
for (auto it = range.first; it != range.second; ++it) {
if (it != range.first)
chordName += "\n" + it->second;
else
chordName += it->second;
}
return chordName;
}
return "";
}
void findChordNames(const std::multimap<int, MTrack> &tracks)
{
auto &data = *preferences.midiImportOperations.data();
for (const auto &track: tracks) {
for (const auto &event: track.second.mtrack->events()) {
const MidiEvent &e = event.second;
const QString chordName = readChordName(e);
if (!chordName.isEmpty()) {
const auto time = ReducedFraction::fromTicks(event.first);
data.chordNames.insert({time, chordName});
}
}
}
}
// all notes should be already placed to the score
void setChordNames(QList<MTrack> &tracks)
{
const auto &data = *preferences.midiImportOperations.data();
if (data.chordNames.empty() || !data.trackOpers.showChordNames.value())
return;
// chords here can have on time very different from the original one
// before quantization, so we look for original on times
// that are stored in notes
std::set<ReducedFraction> usedTimes; // don't use one tick for chord name twice
for (MTrack &track: tracks) {
for (const auto &chord: track.chords) {
if (usedTimes.find(chord.first) != usedTimes.end())
continue;
const MidiChord &c = chord.second;
const QString chordName = findChordName(c.notes, data.chordNames);
if (chordName.isEmpty())
continue;
Staff *staff = track.staff;
Score *score = staff->score();
const ReducedFraction &onTime = chord.first;
usedTimes.insert(onTime);
Measure* measure = score->tick2measure(onTime.ticks());
Segment* seg = measure->getSegment(Segment::Type::ChordRest,
onTime.ticks());
const int t = staff->idx() * VOICES;
Harmony* h = new Harmony(score);
h->setHarmony(chordName);
h->setTrack(t);
seg->add(h);
}
}
}
} // namespace MidiChordName
} // namespace Ms
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