// read the file ahead to collect info about the song first
void CSong::midiFileInfo()
{
m_trackList->clear();
setTimeSig(0,0);
CStavePos::setKeySignature( NOT_USED, 0 );
// Read the next events to find the active channels
CMidiEvent event;
while ( true )
{
event = m_midiFile->readMidiEvent();
m_trackList->examineMidiEvent(event);
if (event.type() == MIDI_PB_timeSignature)
{
setTimeSig(event.data1(),event.data2());
}
if (event.type() == MIDI_PB_EOF)
break;
}
}
void CConductor::playTransposeEvent(CMidiEvent event)
{
if (m_transpose != 0 && event.channel() != MIDI_DRUM_CHANNEL &&
(event.type() == MIDI_NOTE_ON || event.type() == MIDI_NOTE_OFF) )
event.transpose(m_transpose);
if (event.type() == MIDI_NOTE_ON && isChannelMuted(event.channel()) == true &&
CChord::isNotePlayable(event.note(), m_transpose) == true)
return; // mute the note by not playing it
// boost any volume events
if (event.type() == MIDI_CONTROL_CHANGE && event.data1() == MIDI_MAIN_VOLUME)
event.setDatat2(calcBoostVolume(event.channel(), event.data2() ));
// Don't output note on if we are seeking to bar
if (!seekingBarNumber())
playTrackEvent(event); // Play the midi note or event
else
{
if (event.type() == MIDI_PROGRAM_CHANGE || event.type() == MIDI_CONTROL_CHANGE)
playTrackEvent(event); // Play the midi note or event
}
}
//! add a midi event to be played immediately
void CMidiDeviceRt::playMidiEvent(const CMidiEvent & event)
{
if (m_midiPorts[1] < 0)
return;
unsigned int channel;
std::vector<unsigned char> message;
channel = event.channel() & 0x0f;
switch(event.type())
{
case MIDI_NOTE_OFF: // NOTE_OFF
message.push_back( channel | MIDI_NOTE_OFF );
message.push_back( event.note());
message.push_back( event.velocity());
break;
case MIDI_NOTE_ON: // NOTE_ON
message.push_back( channel | MIDI_NOTE_ON );
message.push_back( event.note());
message.push_back( event.velocity());
break;
case MIDI_NOTE_PRESSURE: //POLY_AFTERTOUCH: 3 bytes
message.push_back( channel | MIDI_NOTE_PRESSURE);
message.push_back( event.data1());
message.push_back( event.data2());
break;
case MIDI_CONTROL_CHANGE: //CONTROL_CHANGE:
message.push_back( channel | MIDI_CONTROL_CHANGE);
message.push_back( event.data1());
message.push_back( event.data2());
break;
case MIDI_PROGRAM_CHANGE: //PROGRAM_CHANGE:
message.push_back( channel | MIDI_PROGRAM_CHANGE);
message.push_back( event.programme());
break;
case MIDI_CHANNEL_PRESSURE: //AFTERTOUCH: 2 bytes only
message.push_back( channel | MIDI_CHANNEL_PRESSURE);
message.push_back( event.data1());
break;
case MIDI_PITCH_BEND: //PITCH_BEND:
message.push_back( channel | MIDI_PITCH_BEND);
message.push_back( event.data1());
message.push_back( event.data2());
break;
case MIDI_PB_collateRawMidiData: //used for a SYSTEM_EVENT
if (m_rawDataIndex < arraySize(m_savedRawBytes))
m_savedRawBytes[m_rawDataIndex++] = event.data1();
return; // Don't output any thing yet so just return
case MIDI_PB_outputRawMidiData: //used for a SYSTEM_EVENT
for (size_t i = 0; i < m_rawDataIndex; i++)
message.push_back( m_savedRawBytes[i]);
m_rawDataIndex = 0;
break;
}
m_midiout->sendMessage( &message );
//event.printDetails(); // useful for debugging
}
