// delete all text events from multitrack object
bool DeleteAllTracksText( MIDIMultiTrack &tracks )
{
bool text_deleted = false;
int num_tracks = tracks.GetNumTracksWithEvents();
for ( int nt = 0; nt < num_tracks; ++nt )
{
MIDITrack &trk = *tracks.GetTrack( nt );
int num_events = trk.GetNumEvents();
for ( int ne = 0; ne < num_events; ++ne )
{
MIDITimedBigMessage *msg = trk.GetEvent( ne );
// convert any text midi event to NoOp event
if ( msg->IsTextEvent() )
{
trk.MakeEventNoOp( ne );
text_deleted = true;
}
}
}
return text_deleted;
}
void AdvancedSequencer::ExtractMarkers ( std::vector< std::string > *list )
{
if ( !file_loaded )
{
list->clear();
num_markers = 0;
return;
}
MIDITrack *t = tracks.GetTrack ( 0 );
list->clear();
int cnt = 0;
int measure = 0;
int beat = 0;
int timesig_numerator = 4;
int timesig_denominator = 4;
MIDIClockTime last_beat_time = 0;
MIDIClockTime last_event_time = 0;
int clks_per_beat = tracks.GetClksPerBeat();
for ( int i = 0; i < t->GetNumEvents(); ++i )
{
MIDITimedBigMessage *m = t->GetEventAddress ( i );
if ( m )
{
// how many beats have gone by since the last event?
long beats_gone_by = ( m->GetTime() - last_beat_time ) / clks_per_beat;
if ( beats_gone_by > 0 )
{
// calculate what our new measure/beat is
beat += beats_gone_by;
// carry over beat overflow to measure
measure += beat / timesig_numerator;
beat = beat % timesig_numerator;
last_beat_time += ( clks_per_beat * beats_gone_by );
}
if ( m->IsMetaEvent() && m->IsTimeSig() )
{
timesig_numerator = m->GetTimeSigNumerator();
timesig_denominator = m->GetTimeSigDenominator();
clks_per_beat = tracks.GetClksPerBeat() * 4 / timesig_denominator;
}
if ( m->IsTextEvent() && m->GetSysEx() )
{
if ( ( m->GetMetaType() == META_GENERIC_TEXT )
|| m->GetMetaType() == META_MARKER_TEXT
|| m->GetMetaType() == META_CUE_TEXT )
{
char buf[256];
char line[256];
memcpy ( buf, m->GetSysEx()->GetBuf(), m->GetSysEx()->GetLength() );
buf[ m->GetSysEx()->GetLength() ] = '\0';
FixQuotes ( buf );
sprintf ( line, "%03d:%d %s", measure + 1, beat + 1, buf );
list->push_back ( std::string ( line ) );
marker_times[ cnt++ ] = m->GetTime();
}
}
last_event_time = m->GetTime();
}
}
num_markers = cnt;
}
