int SMFProcessor::seek(SynthRoute *synthRoute, const MidiEventList &midiEvents, int currentEventIx, MasterClockNanos seekNanos, MasterClockNanos currentEventNanos) {
MasterClockNanos nanosNow = MasterClock::getClockNanos();
while (!stopProcessing && currentEventNanos < seekNanos && currentEventIx < midiEvents.size()) {
const MidiEvent &e = midiEvents.at(currentEventIx);
while (!stopProcessing && synthRoute->getState() == SynthRouteState_OPEN) {
bool res = true;
switch (e.getType()) {
case SHORT_MESSAGE: {
quint32 msg = e.getShortMessage();
if ((msg & 0xE0) != 0x80) res = synthRoute->pushMIDIShortMessage(msg, nanosNow);
break;
}
case SYSEX:
res = synthRoute->pushMIDISysex(e.getSysexData(), e.getSysexLen(), nanosNow);
break;
case SET_TEMPO: {
uint tempo = e.getShortMessage();
midiTick = parser.getMidiTick(tempo);
emit driver->tempoUpdated(MidiParser::MICROSECONDS_PER_MINUTE / tempo);
break;
}
default:
break;
}
if (res) break;
qDebug() << "SMFProcessor: MIDI buffer became full while seeking, taking a nap";
usleep(MAX_SLEEP_TIME / MasterClock::NANOS_PER_MICROSECOND);
nanosNow = MasterClock::getClockNanos();
}
currentEventIx++;
currentEventNanos += e.getTimestamp() * midiTick;
}
return currentEventIx;
}
