Method setNoteSlideSSG

BambooTracker/opna_controller.cpp:2317–2324

}

void OPNAController::setNoteSlideSSG(int ch, int speed, int semitone)
{
	auto& ssg = ssg_[ch];
	if (semitone) {
		ssg.nsItr = std::make_unique<NoteSlideEffectIterator>(speed, semitone);
	}
	else ssg.nsItr.reset();
}

void OPNAController::setTransposeEffectSSG(int ch, int semitone)
{