bool MidiParser::setTrack(int track) {
if (track < 0 || track >= _num_tracks)
return false;
// We allow restarting the track via setTrack when
// it isn't playing anymore. This allows us to reuse
// a MidiParser when a track has finished and will
// be restarted via setTrack by the client again.
// This isn't exactly how setTrack behaved before though,
// the old MidiParser code did not allow setTrack to be
// used to restart a track, which was already finished.
//
// TODO: Check if any engine has problem with this
// handling, if so we need to find a better way to handle
// track restarts. (KYRA relies on this working)
else if (track == _active_track && isPlaying())
return true;
if (_smartJump)
hangAllActiveNotes();
else
allNotesOff();
resetTracking();
memset(_active_notes, 0, sizeof(_active_notes));
_active_track = track;
_position._play_pos = _tracks[track];
parseNextEvent(_next_event);
return true;
}
bool MidiParser::jumpToTick(uint32 tick, bool fireEvents, bool stopNotes, bool dontSendNoteOn) {
if (_active_track >= _num_tracks)
return false;
Tracker currentPos(_position);
EventInfo currentEvent(_next_event);
resetTracking();
_position._play_pos = _tracks[_active_track];
parseNextEvent(_next_event);
if (tick > 0) {
while (true) {
EventInfo &info = _next_event;
if (_position._last_event_tick + info.delta >= tick) {
_position._play_time += (tick - _position._last_event_tick) * _psec_per_tick;
_position._play_tick = tick;
break;
}
_position._last_event_tick += info.delta;
_position._last_event_time += info.delta * _psec_per_tick;
_position._play_tick = _position._last_event_tick;
_position._play_time = _position._last_event_time;
if (info.event == 0xFF) {
if (info.ext.type == 0x2F) { // End of track
_position = currentPos;
_next_event = currentEvent;
return false;
} else {
if (info.ext.type == 0x51 && info.length >= 3) // Tempo
setTempo(info.ext.data[0] << 16 | info.ext.data[1] << 8 | info.ext.data[2]);
if (fireEvents)
_driver->metaEvent(info.ext.type, info.ext.data, (uint16) info.length);
}
} else if (fireEvents) {
if (info.event == 0xF0) {
if (info.ext.data[info.length-1] == 0xF7)
_driver->sysEx(info.ext.data, (uint16)info.length-1);
else
_driver->sysEx(info.ext.data, (uint16)info.length);
} else {
// The note on sending code is used by the SCUMM engine. Other engine using this code
// (such as SCI) have issues with this, as all the notes sent can be heard when a song
// is fast-forwarded. Thus, if the engine requests it, don't send note on events.
if (info.command() == 0x9 && dontSendNoteOn) {
// Don't send note on; doing so creates a "warble" with some instruments on the MT-32.
// Refer to patch #3117577
} else {
sendToDriver(info.event, info.basic.param1, info.basic.param2);
}
}
}
parseNextEvent(_next_event);
}
}
if (stopNotes) {
if (!_smartJump || !currentPos._play_pos) {
allNotesOff();
} else {
EventInfo targetEvent(_next_event);
Tracker targetPosition(_position);
_position = currentPos;
_next_event = currentEvent;
hangAllActiveNotes();
_next_event = targetEvent;
_position = targetPosition;
}
}
_abort_parse = true;
return true;
}
bool MidiParser::jumpToTick(uint32 tick, bool fireEvents) {
if (_active_track >= _num_tracks)
return false;
Tracker currentPos(_position);
EventInfo currentEvent(_next_event);
resetTracking();
_position._play_pos = _tracks[_active_track];
parseNextEvent(_next_event);
if (tick > 0) {
while (true) {
EventInfo &info = _next_event;
if (_position._last_event_tick + info.delta >= tick) {
_position._play_time += (tick - _position._last_event_tick) * _psec_per_tick;
_position._play_tick = tick;
break;
}
_position._last_event_tick += info.delta;
_position._last_event_time += info.delta * _psec_per_tick;
_position._play_tick = _position._last_event_tick;
_position._play_time = _position._last_event_time;
if (info.event == 0xFF) {
if (info.ext.type == 0x2F) { // End of track
_position = currentPos;
_next_event = currentEvent;
return false;
} else {
if (info.ext.type == 0x51 && info.length >= 3) // Tempo
setTempo(info.ext.data[0] << 16 | info.ext.data[1] << 8 | info.ext.data[2]);
if (fireEvents)
_driver->metaEvent(info.ext.type, info.ext.data, (uint16) info.length);
}
} else if (fireEvents) {
if (info.event == 0xF0) {
if (info.ext.data[info.length-1] == 0xF7)
_driver->sysEx(info.ext.data, (uint16)info.length-1);
else
_driver->sysEx(info.ext.data, (uint16)info.length);
} else
_driver->send(info.event, info.basic.param1, info.basic.param2);
}
parseNextEvent(_next_event);
}
}
if (!_smartJump || !currentPos._play_pos) {
allNotesOff();
} else {
EventInfo targetEvent(_next_event);
Tracker targetPosition(_position);
_position = currentPos;
_next_event = currentEvent;
hangAllActiveNotes();
_next_event = targetEvent;
_position = targetPosition;
}
_abort_parse = true;
return true;
}
