virtual void handleNote(uint8_t note, uint8_t duration) {
int octave = noteOctave(note);
if(channel < 8) {
if(curOctave != octave) {
if(curOctave == -1 || curOctave - octave > 1 || octave - curOctave > 1) {
mmlf("o%d", octave);
} else if(curOctave == octave + 1) {
mmlf("<");
} else if(curOctave == octave - 1) {
mmlf(">");
}
}
curOctave = octave;
}
if(duration > 0) {
int mmlDuration;
bool dot = false, percent = false;
if(192 % duration == 0) {
mmlDuration = 192 / duration;
} else if(192 % (duration * 2 / 3) == 0 && (duration * 2) % 3 == 0) {
dot = true;
mmlDuration = 192 * 3 / duration / 2;
} else {
percent = true;
}
char buf[100];
if(channel < 8) {
sprintf(buf, "%s", noteName(note));
} else {
sprintf(buf, "n%d,", note);
}
if(percent) sprintf(buf + strlen(buf), "%%%d", duration);
else sprintf(buf + strlen(buf), "%d", mmlDuration);
if(dot) strcat(buf, ".");
if(nextKeyOff) strcat(buf, "&");
if(nextPortamento) {
int nextNote = note + (nextPortamento * duration + (nextPortamento < 0 ? -16383 : 16383)) / 16384;
int nextOctave = noteOctave(nextNote);
strcat(buf, "_");
if(nextOctave != octave) sprintf(buf + strlen(buf), "o%d", nextOctave);
curOctave = nextOctave;
sprintf(buf + strlen(buf), "%s", noteName(nextNote));
}
mmlf("%s", buf);
}
nextKeyOff = false;
nextPortamento = 0;
}
void Tuner::draw(double time)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
text.print(noteName(notes[currentNote]), 960 - 140, 540 - 16, 32);
float level = d.rms();
// scale to 0 .. 1
level = (level - o.noiseRMS) / (o.signalRMS - o.noiseRMS);
d.analyze();
float detectedFrequency = d.result();
float cents = centDifference(detectedFrequency, targetFrequency);
char textBuf[64];
sprintf(textBuf, "%.0f", cents);
text.print(textBuf, 960 - 100, 540 - 16, 32);
sprintf(textBuf, "%.2f", level);
text.print(textBuf, 960 - 400, 540 - 16, 32);
glUseProgram(programId);
glEnableVertexAttribArray(0);
glBindBuffer(GL_ARRAY_BUFFER, vertexBufferId);
drawBackground();
glUniform3f(uniformTintId, level, level, level);
// clamp to -50 .. +50
float clamped = std::min(std::max(cents, -50.0f), 50.0f);
// scale to -45° .. +45°
float angle = clamped / 50 * PI / 4;
gaugeVertices[2] = 960 + needleLength * cosf(angle);
gaugeVertices[3] = gaugePositions[currentNote] + needleLength * sin(angle);
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * gaugeVertices.size(), gaugeVertices.data(), GL_STATIC_DRAW);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, 0);
glDrawArrays(GL_LINES, 0, 2);
glDisableVertexAttribArray(0);
if (!hit && fabs(cents) < o.precisionCentDelta)
{
hit = true;
hitStart = time;
}
if (hit && fabs(cents) > o.precisionCentDelta)
{
hit = false;
}
if (hit && time - hitStart > o.precisionHoldTime)
{
nextNote();
}
}
//------------------------------------------------------------------------------
const char* noteName(const double & pitch)
{
return noteName(toInt(pitch));
}