void updateVolume(void) {
int i;
double volsum = 0.0;
for (i=0; i<volumes.getCount(); i++) {
volsum += volumes[i];
}
if (volumes.getCount() != 0) {
avgVol = volsum / volumes.getCount();
} else {
avgVol = 0.0;
}
// get the variance
volsum = 0.0;
for (i=0; i<volumes.getCount(); i++) {
volsum += (avgVol - volumes[i]) * (avgVol - volumes[i]);
}
avgVolRange = sqrt(volsum);
}
void updateDuration(void) {
int i;
double dursum = 0.0;
for (i=0; i<durations.getCount(); i++) {
dursum += durations[i];
}
if (durations.getCount() != 0) {
avgDur = dursum / durations.getCount();
} else {
avgDur = 0.0;
}
// get the variance
dursum = 0.0;
for (i=0; i<durations.getCount(); i++) {
dursum += (avgDur - durations[i]) * (avgDur - durations[i]);
}
avgDurRange = sqrt(dursum);
}
void checkBuffers(void) {
// look at the volume buffers for old volumes:
while ( (voltimes.getCount() > 0) && (voltimes[voltimes.getCount()-1] <
t_time - volDuration) ) {
volumes.extract();
voltimes.extract();
}
// look at the duration buffers for old durations:
while ( (durtimes.getCount() > 0) && (durtimes[durtimes.getCount()-1] <
t_time - durDuration) ) {
durations.extract();
durtimes.extract();
}
// look at the key buffers for old keys:
int oldkey;
while ( (keytimes.getCount() > 0) && (keytimes[keytimes.getCount()-1] <
t_time - keyDuration) ) {
oldkey = keys.extract();
keytimes.extract();
performerPCHistory[oldkey%12]--;
if (performerPCHistory[oldkey%12] < 0) {
performerPCHistory[oldkey%12] = 0;
}
}
}
void mainloopalgorithms(void) {
if (comparestate && notetimer.expired()) {
if (notetimer.expired() > 2) {
notetimer.reset();
} else {
notetimer.update();
}
notestate = !notestate;
if (notestate == 1 || notestate == -1) {
synth.play(0, note, 64);
data = 0x90; sentout.insert(data);
data = note; sentout.insert(data);
data = 64; sentout.insert(data);
} else {
synth.play(0, note, 0);
data = 0x90; sentout.insert(data);
data = note; sentout.insert(data);
data = 0; sentout.insert(data);
note += step * direction;
if (note > highestnote) {
note = lowestnote;
}
if (note < lowestnote) {
note = highestnote;
}
}
}
if (midiinput.getCount() > 0) {
message = midiinput.extract();
receivedin.insert(message.p0());
receivedin.insert(message.p1());
receivedin.insert(message.p2());
// check that the messages are identical
if (receivedin.getCount() < 3) {
cout << "Error: not enough received data" << endl;
} else {
checkin[0] = receivedin.extract();
checkin[1] = receivedin.extract();
checkin[2] = receivedin.extract();
}
if (sentout.getCount() < 3) {
cout << "Error: not enough sent data" << endl;
} else {
checkout[0] = sentout.extract();
checkout[1] = sentout.extract();
checkout[2] = sentout.extract();
}
if ((checkout[0] != checkin[0]) || (checkout[1] != checkin[1]) ||
(checkout[2] != checkin[2])) {
synth.rawsend(0xaa, 0x7f, 0x00);
cout << "Error "
<< "output was = (" << hex << (int)checkout[0] << ") "
<< dec << (int)checkout[1] << " "
<< dec << (int)checkout[2] << "\tbut input is = ("
<< hex << (int)checkin[0] << ") "
<< dec << (int)checkin[1] << " "
<< dec << (int)checkin[2] << " "
<< endl;
// assume that a note message was missed.
if (sentout.getCount() < 3) {
cout << "Error: not enough sent data during error" << endl;
} else {
checkout[0] = sentout.extract();
checkout[1] = sentout.extract();
checkout[2] = sentout.extract();
}
stop();
cout << "Press space to restart testing, "
"or press 'S' to silence synth" << endl;
}
}
}
