static void TumbleNoteFunction(FunctionEvent& p, EventBuffer& midiOutput) {
static NoteEvent note; // temporary note for placing in buffer
TumbleParameters& param = tparam[p.charValue(0)];
int newnote = limit(param.current + param.dir * param.n[param.pos], 0, 127);
// turn off algorithm if someone turned the algorithm off externally
// or if the current note is too large or too small.
if (param.active == 0 || newnote < A0 || newnote > C7) {
param.active = 0;
p.off(midiOutput);
return;
}
// set the parameters of the output note:
note.setOnDur(t_time, param.d[param.pos]); // off time holds dur
note.setVel(param.v[param.pos]);
note.setChan(p.getChan());
note.setKey(newnote);
note.activate();
note.action(midiOutput); // start right now, avoiding any buffer delay
midiOutput.insert(note); // store the note for turning off later
// update the parameters for the tumble algorithm
p.setOnTime(p.getOnTime() + param.i[param.pos]);
param.current = newnote;
param.pos++;
if (param.pos > param.n.getSize()) {
param.pos = 0;
}
}
static void EchoAlgorithm(FunctionEvent& p, EventBuffer& midiOutput) {
static NoteEvent note; // temporary note before placing in buffer
// check if pausing
if (decaystates[p.getKey()] < 0.0) {
p.setOnTime(p.getOnTime() + p.getDur() + p.shortValue(14));
return;
}
// set the parameters for the output note:
note.setOnDur(t_time, p.getOffTime()); // off time holds dur
note.setVel(p.getVel());
note.setChan(p.getChan());
note.setKey(p.getKey());
// update the parameters for the function:
decaystates[p.getKey()] *= decayrate;
p.setVel((int)decaystates[p.getKey()]);
// if note is too quiet, end the note
if (p.getVel() <= 2) {
p.off(midiOutput);
decaystates[p.getKey()] = 0.0;
}
// next time includes a gap so that key can raise on keyboard
p.setOnTime(p.getOnTime() + p.getDur() + p.shortValue(14));
note.activate();
note.action(midiOutput); // start right now, avoiding any buffer delay
midiOutput.insert(note); // the note off message is being buffered
}
static void EnhanceFunction(FunctionEvent& p, EventBuffer& midiOutput) {
static NoteEvent note; // temporary note before placing in buffer
// set the parameters for the output note:
note.setOnDur(t_time, p.getOffTime()); // off time holds dur
note.setVel(p.getVel());
note.setChan(p.getChan());
note.setKey(p.getKey());
// if note is too quiet
if (p.getVel() <= 5) {
p.off(midiOutput);
}
// update the parameters for the function:
p.setKey(p.getKey()+p.shortValue(14));
p.setVel(p.getVel()-5);
p.setOnTime(p.getOnTime() + p.getDur()); // OffTime stores duration
note.activate();
note.action(midiOutput); // start right now, avoiding any buffer delay
midiOutput.insert(note); // the note off message is being buffered
// check wether to kill the algorithm or not:
// if note is off the range of the keyboard
if (p.getKey() > C8 || p.getKey() < A0) {
p.off(midiOutput);
}
}
void playNextPattern(EventBuffer& eventbuffer, NoteScore& score,
int pattern, int subpattern, double tempo) {
if (pattern == 0 && subpattern == 3) {
subpattern = 2;
}
if (pattern == 6 && subpattern == 3) {
subpattern = 2;
}
int p = pattern;
int sp = subpattern;
cout << "playing pattern " << pattern << (char)('a' + subpattern) << endl;
NoteEvent note; // temporary note for placing in buffer
int i;
for (i=0; i<score[pattern][subpattern].getSize(); i++) {
if (!activevoice[score[pattern][subpattern][i].voice]) {
continue;
}
note.setOnDur((int)(t_time + score[p][sp][i].start * 1000 * 60 / tempo +
0.5), (int)(score[p][sp][i].dur * 1000 * 60 / tempo + 0.5));
note.setChan(CH_10);
note.setKey(voicetokey[score[p][sp][i].voice]);
note.setVel(score[p][sp][i].vel);
note.activate();
if (score[p][sp][i].start == 0.0) {
note.action(eventbuffer); // play starting notes now, avoiding delay
}
eventbuffer.insert(note);
}
}
static void TrillAlgorithm(FunctionEvent& p, EventBuffer& midiOutput) {
static NoteEvent note; // temporary note before placing in buffer
int key1 = p.getKey(); // lower key of trill
int key2 = p.charValue(14); // upper key of trill
int state = p.charValue(15); // which note to play next
int starttime = p.intValue(10); // when trill was started
int i;
// turn off the trill if there is a note played inside the trill
int range1 = key1;
int range2 = key2;
if (range2 - range1 == 1) {
range1--;
range2++;
}
for (i=range1; i<=range2; i++) {
if (noteontimes[i] > starttime) {
p.off(midiOutput);
return;
}
}
// set the next note to play
int key = state ? key2 : key1;
state = !state;
p.charValue(15) = state;
// set the parameters for the output note:
note.setOnDur(t_time, p.getDur());
note.setVel(p.getVel());
note.setChan(p.getChan());
note.setKey(key);
// update the parameters for the gliss function:
p.setOnTime(p.getOnTime() + p.getDur());
int value = p.getVel() + velcorrection;
if (value < 100 && value > 3) {
p.setVel(value);
}
if (p.getDur() + trillcorrection > MINTRIGTIME) {
p.setDur(p.getDur() + trillcorrection);
}
note.activate();
note.action(midiOutput); // start right now, avoiding any buffer delay
midiOutput.insert(note); // the note off message is being buffered
}
void processNotes(HumdrumRecord& record) {
NoteEvent note;
int pitch = 0;
double duration = 0.0;
int staccatoQ = 0;
int accentQ = 0;
int sforzandoQ = 0;
int i, j;
int notecount = 0;
char buffer[128] = {0};
for (i=0; i<record.getFieldCount(); i++) {
if ((record.getPrimaryTrack(i) < (int)trackmute.size())
&& trackmute[record.getPrimaryTrack(i)]) {
continue;
}
if (record.getExInterpNum(i) == E_KERN_EXINT) {
notecount = record.getTokenCount(i);
if (strcmp(record[i], ".") == 0) {
continue;
}
for (j=0; j<notecount; j++) {
record.getToken(buffer, i, j);
if (strchr(buffer, '[')) {
// total tied note durations
duration = data.getTiedDuration(linenum, i, j);
} else {
duration = Convert::kernToDuration(buffer);
}
pitch = Convert::kernToMidiNoteNumber(buffer);
// skip rests
if (pitch < 0) {
continue;
}
pitch += transpose;
// don't play note which is transposed too extremely
if (pitch < 0) { continue; }
if (pitch > 127) { continue; }
// skip tied notes
if (strchr(buffer, '_') || strchr(buffer, ']')) {
continue;
}
accentQ = strchr(buffer, '^') == NULL? 0 : 1;
sforzandoQ = strchr(buffer, 'z') == NULL? 0 : 1;
staccatoQ = strchr(buffer, '\'') == NULL? 0 : 1;
note.setChannel(0);
note.setKey(pitch);
note.setOnTime(t_time);
duration = duration * 60000 / tempo / tempoScale;
if (shortenQ) {
duration -= shortenamount;
if (duration < mine) {
duration = mine;
}
}
note.setDur((int)duration);
if (staccatoQ) {
note.setDur((int)(0.5 * note.getDur()));
}
note.setKey(pitch);
if (accentQ) {
velocity *= 1.3;
}
if (sforzandoQ) {
velocity *= 1.5;
}
if (velocity > 127) {
velocity = 127;
}
note.setVelocity(velocity);
note.activate();
note.action(eventBuffer);
eventBuffer.insert(note);
}
}
}
}