C++ MidiDevice::stuckNotes方法代码示例

void Audio::collectEvents(MidiTrack* track, unsigned int cts, unsigned int nts)
{
	int port = track->outPort();
	int channel = track->outChannel();
	int defaultPort = port;

	MidiDevice* md = midiPorts[port].device();
	MPEventList* playEvents = md->playEvents();
	MPEventList* stuckNotes = md->stuckNotes();

	PartList* pl = track->parts();
	for (iPart p = pl->begin(); p != pl->end(); ++p)
	{
		MidiPart* part = (MidiPart*) (p->second);
		// dont play muted parts
		if (part->mute())
			continue;
		EventList* events = part->events();
		unsigned partTick = part->tick();
		unsigned partLen = part->lenTick();
		int delay = track->delay;

		if (cts > nts)
		{
			printf("processMidi: FATAL: cur > next %d > %d\n",
					cts, nts);
			return;
		}
		unsigned offset = delay + partTick;
		if (offset > nts)
			continue;
		unsigned stick = (offset > cts) ? 0 : cts - offset;
		unsigned etick = nts - offset;
		// By T356. Do not play events which are past the end of this part.
		if (etick > partLen)
			continue;

		iEvent ie = events->lower_bound(stick);
		iEvent iend = events->lower_bound(etick);

		for (; ie != iend; ++ie)
		{
			Event ev = ie->second;
			port = defaultPort; //Reset each loop
			//
			//  dont play any meta events
			//
			if (ev.type() == Meta)
				continue;
			if (track->type() == Track::DRUM)
			{
				int instr = ev.pitch();
				// ignore muted drums
				if (ev.isNote() && drumMap[instr].mute)
					continue;
			}
			unsigned tick = ev.tick() + offset;
			unsigned frame = tempomap.tick2frame(tick) + frameOffset;
			switch (ev.type())
			{
				case Note:
				{
					int len = ev.lenTick();
					int pitch = ev.pitch();
					int velo = ev.velo();
					if (track->type() == Track::DRUM)
					{
						//
						// Map drum-notes to the drum-map values
						//
						int instr = ev.pitch();
						pitch = drumMap[instr].anote;
						port = drumMap[instr].port; //This changes to non-default port
						channel = drumMap[instr].channel;
						velo = int(double(velo) * (double(drumMap[instr].vol) / 100.0));
					}
					else
					{
						//
						// transpose non drum notes
						//
						pitch += (track->transposition + song->globalPitchShift());
					}

					if (pitch > 127)
						pitch = 127;
					if (pitch < 0)
						pitch = 0;
					velo += track->velocity;
					velo = (velo * track->compression) / 100;
					if (velo > 127)
						velo = 127;
					if (velo < 1) // no off event
						velo = 1;
					len = (len * track->len) / 100;
					if (len <= 0) // dont allow zero length
						len = 1;
					int veloOff = ev.veloOff();

					if (port == defaultPort)
//.........这里部分代码省略.........

//.........这里部分代码省略.........

									rl->add(recEvent);
								}
							}
						}
					}
				}
			}
		}
		// Added by Tim. p3.3.8
		if (md)
		{
			//printf("zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz\n");

			md->setNextPlayEvent(playEvents->begin());
		}
	}

	//
	// clear all recorded events in midiDevices
	// process stuck notes
	//
	for (iMidiDevice id = midiDevices.begin(); id != midiDevices.end(); ++id)
	{
		//printf("--------------------------aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n");
		MidiDevice* md = *id;

		///md->recordEvents()->clear();
		// By T356. Done processing this rec buffer, now flip to the other one.
		///md->flipRecBuffer();
		// We are done with the 'frozen' recording fifos, remove the events.
		md->afterProcess();

		MPEventList* stuckNotes = md->stuckNotes();
		MPEventList* playEvents = md->playEvents();

		iMPEvent k;
		for (k = stuckNotes->begin(); k != stuckNotes->end(); ++k)
		{
			if (k->time() >= nextTickPos)
				break;
			MidiPlayEvent ev(*k);

			// p3.3.25
			//int frame = tempomap.tick2frame(k->time()) + frameOffset;
			if (extsync)
			{
				ev.setTime(k->time());
			}
			else
			{
				int frame = tempomap.tick2frame(k->time()) + frameOffset;
				ev.setTime(frame);
			}

			// p3.3.25
			//ev.setTime(frame);

			playEvents->add(ev);
		}
		stuckNotes->erase(stuckNotes->begin(), k);
		md->setNextPlayEvent(playEvents->begin());
	}

	//---------------------------------------------------
	//    insert metronome clicks