void CTrackList::refresh()
{
int chan;
int rowCount = 0;
m_trackQtList.clear();
for (chan = 0; chan < MAX_MIDI_CHANNELS; chan++)
{
if (m_midiActiveChannels[chan] == true)
{
CTrackListItem trackItem;
trackItem.midiChannel = chan;
m_trackQtList.append(trackItem);
rowCount++;
}
}
if (pianoPartConvetionTest())
{
if (CNote::bothHandsChan() == -2 ) // -2 for not set -1 for not used
CNote::setChannelHands(CONVENTION_LEFT_HAND_CHANNEL, CONVENTION_RIGHT_HAND_CHANNEL);
m_song->setActiveChannel(CNote::bothHandsChan());
ppLogInfo("Active both");
}
else
{
if (m_trackQtList.count() > 0)
{
m_song->setActiveChannel(m_trackQtList[0].midiChannel);
}
}
if (CStavePos::getKeySignature() == NOT_USED)
CStavePos::setKeySignature(guessKeySignature(CNote::rightHandChan(),CNote::leftHandChan()), 0);
// Find an unused channel that we can use for the keyboard
m_song->reset();
int goodChan = findFreeChannel(0);
int badChan = findFreeChannel(goodChan + 1);
int spareChan = findFreeChannel(badChan +1 );
if (badChan == -1)
{
// As we have not found two we have not found to empty channels to use
goodChan = 15 -1;
badChan = 16-1;
}
m_song->setPianistChannels(goodChan,badChan);
ppLogInfo("Using Pianist Channels %d + %d", goodChan +1, badChan +1);
if (Cfg::keyboardLightsChan != -1 && spareChan != -1)
m_song->mapTrack2Channel(Cfg::keyboardLightsChan, spareChan);
}
void MusicPlayer::callback() {
if (!_isPlaying)
return;
_musicTimer += _musicTicks;
if (_musicTimer < _timerLimit)
return;
_musicTimer -= _timerLimit;
--_nextEventTimer;
if (_nextEventTimer)
return;
while (true) {
uint8_t command = _file.at(_curOffset++);
if (command == 0xFF) {
command = _file.at(_curOffset++);
if (command == 47) {
// End of track
_isPlaying = false;
return;
} else if (command == 88) {
// This is proposedly a debug information insertion. The CMS
// player code handles this differently, but is still using
// the same resources...
_curOffset += 5;
} else if (command == 81) {
uint16_t timing = _file.at(_curOffset + 2) | (_file.at(_curOffset + 1) << 8);
_musicTicks = 0x73000 / timing;
command = _file.at(_curOffset++);
_curOffset += command;
} else {
command = _file.at(_curOffset++);
_curOffset += command;
}
} else {
if (command >= 0x90) {
command -= 0x90;
const uint16_t instrOffset = _instrumentOffset[command];
if (instrOffset) {
if (_file.at(instrOffset + 13) != 0) {
setupRhythm(_file[instrOffset + 13], instrOffset);
} else {
uint8_t channel = findFreeChannel();
if (channel != 0xFF) {
noteOff(channel);
setupChannel(channel, instrOffset);
_channelLastEvent[channel] = command + 0x90;
_channelFrequency[channel] = _file.at(_curOffset);
setupFrequency(channel, _file[_curOffset]);
}
}
}
} else {
const uint8_t note = _file.at(_curOffset);
command += 0x10;
uint8_t channel = 0xFF;
for (uint8_t i = 0; i < _voiceChannels; ++i) {
if (_channelFrequency[i] == note && _channelLastEvent[i] == command) {
channel = i;
break;
}
}
if (channel != 0xFF) {
noteOff(channel);
} else {
command -= 0x90;
const uint16_t instrOffset = _instrumentOffset[command];
if (instrOffset && _file.at(instrOffset + 13) != 0) {
const uint8_t rhythmInstr = _file[instrOffset + 13];
//if (rhythmInstr >= 6)
// throw std::range_error("rhythmInstr >= 6");
if (rhythmInstr < 6) {
_mdvdrState &= _mdvdrTable[rhythmInstr] ^ 0xFF;
writeReg(0xBD, _mdvdrState);
}
}
}
}
_curOffset += 2;
}
if (_file.at(_curOffset) != 0)
break;
++_curOffset;
}
_nextEventTimer = _file.at(_curOffset++);
if (_nextEventTimer & 0x80) {
_nextEventTimer -= 0x80;
_nextEventTimer <<= 7;
_nextEventTimer |= _file.at(_curOffset++);
}
_nextEventTimer >>= _isLoom ? 2 : 1;
if (!_nextEventTimer)
_nextEventTimer = 1;
}
