void extractMetricSequence(Array<double>& metriclevels, HumdrumFile& hfile,
int track) {
Array<int> metlev;
hfile.analyzeMetricLevel(metlev);
int i, j;
metriclevels.setSize(metlev.getSize());
metriclevels.setSize(1000);
metriclevels.setSize(0);
metriclevels.allowGrowth();
double level;
for (i=0; i<hfile.getNumLines(); i++) {
switch (hfile[i].getType()) {
case E_humrec_data:
for (j=0; j<hfile[i].getFieldCount(); j++) {
if (hfile[i].getPrimaryTrack(j) != track) {
continue;
}
if (strcmp(hfile[i][j], ".") == 0) {
// ignore null tokens
break;
}
if (strchr(hfile[i][j], '_') != NULL) {
// ignore continuing ties
break;
}
if (strchr(hfile[i][j], ']') != NULL) {
// ignore ending ties
break;
}
if (strchr(hfile[i][j], 'r') != NULL) {
// ignore rests
break;
}
level = -(double)metlev[i];
metriclevels.append(level);
break;
}
break;
}
}
}
void generateSwing(HumdrumFile& infile, Array<double>& timings, double amount) {
int i;
double fraction = amount / 100.0;
Array<int> data;
Array<int> nextdata;
Array<int> lastdata;
data.setSize(timings.getSize());
nextdata.setSize(timings.getSize());
lastdata.setSize(timings.getSize());
data.setAll(0);
// nextdata.setAll(-1);
nextdata.setAll(0);
lastdata.setAll(0);
for (i=0; i<infile.getNumLines(); i++) {
if (infile[i].isData()) {
data[i] = 1;
}
}
int last = 0;
for (i=0; i<data.getSize(); i++) {
if (data[i]) {
lastdata[i] = last;
last = i;
}
}
int next = 0;
for (i=data.getSize()-1; i>= 0; i--) {
if (data[i]) {
nextdata[i] = next;
next = i;
}
}
Array<int> rhylev;
infile.analyzeMetricLevel(rhylev);
// switch sign for now so that eighth note level is -1.
for (i=0; i<rhylev.getSize(); i++) {
rhylev[i] = -rhylev[i];
}
double newtime;
for (i=0; i<infile.getNumLines(); i++) {
if (!infile[i].isData()) {
continue;
}
if (rhylev[i] == -1) {
// if we are on an eighth note metric level
if (rhylev[nextdata[i]] >= 0 && rhylev[lastdata[i]] >= 0) {
// if the eighth note is surrounded by beat levels
// then adjust the timing of the note
newtime = timings[nextdata[i]] - timings[lastdata[i]];
newtime = newtime * fraction;
newtime = newtime + timings[lastdata[i]];
// fix the ending case later:
if (newtime >= timings[lastdata[i]]) {
timings[i] = newtime;
}
}
}
}
}
int generatePicture(HumdrumFile& infile, Array<PixelRow>& picture, int
style) {
Array<char> marks;
getMarkChars(marks, infile);
PixelColor matchcolor(255,255,255);
infile.analyzeRhythm("4");
int min = infile.getMinTimeBase();
double totaldur = infile.getTotalDuration();
int columns = (int)(totaldur * min / 4.0 + 0.5) + 5;
if (columns > 50000) {
cout << "Error: picture will be too big to generate" << endl;
exit(1);
}
int factor = (int)(maxwidth / columns);
if (factor <= 0) {
factor = 1;
}
if (factor > maxfactor) {
factor = maxfactor;
}
// set picture to black first. Black regions will be filled in
// with the background later.
picture.setSize(128);
int i, j, k;
PixelColor backcolor(bgcolor);
for (i=0; i<picture.getSize(); i++) {
picture[i].setSize(columns * factor);
for (j=0; j<picture[i].getSize(); j++) {
picture[i][j] = backcolor;
// picture[i][j].setRed(0);
// picture[i][j].setGreen(0);
// picture[i][j].setBlue(0);
}
}
// examine metric levels for metric coloration
Array<int>rhylev;
infile.analyzeMetricLevel(rhylev);
for (i=0; i<rhylev.getSize(); i++) {
// reverse sign so that long notes are positive.
rhylev[i] = -rhylev[i];
}
PixelColor color;
int minpitch = 128;
int maxpitch = -1;
int pitch = 0;
double duration = 0;
double start = 0;
char buffer[1024] = {0};
for (i=0; i<infile.getNumLines(); i++) {
if (debugQ) {
cout << "Processing input line " << i + 1 << '\t' << infile[i] << endl;
}
if (infile[i].isData()) {
start = infile[i].getAbsBeat();
for (j=0; j<infile[i].getFieldCount(); j++) {
if (strcmp(infile[i].getExInterp(j), "**kern") != 0) {
continue;
}
// duration = Convert::kernToDuration(infile[i][j]);
duration = infile.getTiedDuration(i, j);
color = makeColor(infile, i, j, style, rhylev,
infile[i].getPrimaryTrack(j));
for (k=0; k<infile[i].getTokenCount(j); k++) {
infile[i].getToken(buffer, j, k);
if (strchr(buffer, '_') != NULL) {
continue;
}
if (strchr(buffer, ']') != NULL) {
continue;
}
pitch = Convert::kernToMidiNoteNumber(buffer);
if (pitch < 0) {
// ignore rests
continue;
}
if (pitch < minpitch) {
minpitch = pitch;
}
if (pitch > maxpitch) {
maxpitch = pitch;
}
if (isMatch(marks, buffer)) {
placeNote(picture, pitch, start, duration, min,
color, factor, 1);
} else {
placeNote(picture, pitch, start, duration, min,
color, factor, 0);
}
}
}
}
}
gmaxpitch = maxpitch;
gminpitch = minpitch;
return factor;
}
