bool MIDIFileReadMultiTrack::mf_metamisc ( MIDIClockTime time, int type, int len, unsigned char *data ) // funcVRM
{
// code for all miscellaneous meta events
MIDITimedMessage msg;
msg.SetTime ( time );
msg.SetStatus( META_EVENT );
msg.SetByte1( type );
if ( len <= 5 )
{
if ( len > 0 )
msg.SetByte2( data[0] );
if ( len > 1 )
msg.SetByte3( data[1] );
if ( len > 2 )
msg.SetByte4( data[2] );
if ( len > 3 )
msg.SetByte5( data[3] );
if ( len > 4 )
msg.SetByte6( data[4] );
}
// else msg add to track, but do'nt write to output midifile!
msg.SetDataLength( len );
return AddEventToMultiTrack ( msg, 0, cur_track );
}
bool MIDIFileReadMultiTrack::mf_keysig ( MIDIClockTime time, int c, int v ) // VRM
{
MIDITimedMessage msg;
msg.SetTime ( time );
msg.SetKeySig ( ( unsigned char ) c, ( unsigned char ) v );
msg.SetDataLength( 2 ); // VRM
return AddEventToMultiTrack ( msg, 0, cur_track ); // VRM
}
bool MIDIFileReadMultiTrack::mf_timesig ( MIDIClockTime time, int num, int den_pow, int clks_per_metro, int notated_32nd_per_quarter ) // funcVRM
{
MIDITimedMessage msg;
msg.SetTime ( time );
msg.SetTimeSig ( num, den_pow, clks_per_metro, notated_32nd_per_quarter );
msg.SetDataLength( 5 ); // VRM // source 4 bytes + 1 byte for denominator
return AddEventToMultiTrack ( msg, 0, cur_track );
}
bool MIDIFileReadMultiTrack::mf_eot ( MIDIClockTime time ) // VRM
{
MIDITimedMessage msg;
msg.SetStatus ( META_EVENT );
msg.SetMetaType ( META_END_OF_TRACK ); // VRM
msg.SetTime ( time );
msg.SetDataLength( 0 ); // VRM
return AddEventToMultiTrack ( msg, 0, cur_track ); // VRM
}
bool MIDIFileReadMultiTrack::mf_tempo ( MIDIClockTime time, unsigned char a, unsigned char b, unsigned char c ) // funcVRM
{
MIDITimedMessage msg;
msg.SetTime ( time );
msg.SetMetaEvent ( MF_META_TEMPO, a, b );
msg.SetByte4( c );
msg.SetDataLength( 3 );
return AddEventToMultiTrack ( msg, 0, cur_track );
}
void MIDIFileReadMultiTrack::mf_keysig ( MIDIClockTime time, int c, int v )
{
MIDITimedMessage msg;
msg.SetKeySig ( ( unsigned char ) c, ( unsigned char ) v );
msg.SetTime ( time );
AddEventToMultiTrack ( msg, 0, cur_track );
}
void MIDIFileReadMultiTrack::mf_eot ( MIDIClockTime time )
{
MIDITimedMessage msg;
msg.SetStatus ( META_EVENT );
msg.SetMetaType ( META_END_OF_TRACK );
msg.SetTime ( time );
AddEventToMultiTrack ( msg, 0, cur_track );
}
bool MIDIFileReadMultiTrack::mf_sysex ( MIDIClockTime time, int type, int len, unsigned char *s ) // funcVRM
{
MIDITimedMessage msg;
msg.SetSysEx( type ); // set msg status byte (0xF0 or 0xF7)
int num = len; // number of possible SysExURT header data bytes in msg, 0...5
if ( num > 5 )
num = 5;
// add up to 5 starting bytes for SysExURT functions
if ( num > 0 )
msg.SetByte2( s[0] );
if ( num > 1 )
msg.SetByte3( s[1] );
if ( num > 2 )
msg.SetByte4( s[2] );
if ( num > 3 )
msg.SetByte5( s[3] );
if ( num > 4 )
msg.SetByte6( s[4] );
msg.SetTime ( time );
MIDISystemExclusive sysex( len );
for ( int i = 0; i < len; ++i )
{
sysex.PutSysByte ( s[i] );
}
msg.SetDataLength( num );
return AddEventToMultiTrack ( msg, &sysex, cur_track );
}
void MIDIFileReadMultiTrack::mf_sysex ( MIDIClockTime time, const MIDISystemExclusive &ex )
{
MIDITimedMessage msg;
msg.SetSysEx();
msg.SetTime ( time );
MIDISystemExclusive *sysex = new MIDISystemExclusive ( ex );
AddEventToMultiTrack ( msg, sysex, cur_track );
}
bool MIDIFileReadMultiTrack::mf_text ( MIDIClockTime time, int type, int len, unsigned char *s ) // VRM
{
MIDITimedMessage msg;
msg.SetStatus ( META_EVENT );
msg.SetMetaType ( ( uchar ) type ); // remember - MF_META_* id codes match META_* codes
msg.SetTime ( time );
MIDISystemExclusive sysex( len ); // VRM
for ( int i = 0; i < len; ++i )
{
sysex.PutSysByte ( s[i] ); // VRM
}
msg.SetDataLength( 0 ); // VRM // variable data length don't saved to data_length
return AddEventToMultiTrack ( msg, &sysex, cur_track ); // VRM
}
void MIDIFileReadMultiTrack::mf_text ( MIDIClockTime time, int type, int len, unsigned char *s )
{
MIDITimedMessage msg;
msg.SetStatus ( META_EVENT );
msg.SetMetaType ( ( uchar ) type ); // remember - MF_*_TEXT* id codes match META_*_TEXT codes
msg.SetTime ( time );
MIDISystemExclusive *sysex = new MIDISystemExclusive ( len );
for ( int i=0; i<len; ++i )
{
sysex->PutSysByte ( s[i] );
}
AddEventToMultiTrack ( msg, sysex, cur_track );
}
void MIDIFileReadMultiTrack::ChanMessage ( const MIDITimedMessage &msg )
{
if ( the_format == 0 || cur_track==0 )
{
// split format 0 files into separate tracks, one for each channel,
// keep track 0 for tempo and meta-events
AddEventToMultiTrack ( msg, 0, msg.GetChannel() +1 );
}
else
{
AddEventToMultiTrack ( msg, 0, cur_track );
}
}
void MIDIFileReadMultiTrack::mf_tempo ( MIDIClockTime time, unsigned long tempo )
{
unsigned long tempo_bpm_times_32;
if ( tempo==0 )
tempo=1;
// tempo is in microseconds per beat
// calculate beats per second by
float beats_per_second = static_cast<float> ( 1e6 / ( double ) tempo );// 1 million microseconds per second
float beats_per_minute = beats_per_second * 60;
tempo_bpm_times_32 = static_cast<unsigned long> ( beats_per_minute * 32.0 );
MIDITimedMessage msg;
msg.SetTempo32 ( static_cast<unsigned short> ( tempo_bpm_times_32 ) );
msg.SetTime ( time );
AddEventToMultiTrack ( msg, 0, cur_track );
}
void MIDIFileReadMultiTrack::mf_timesig (
MIDIClockTime time,
int num,
int denom_power,
int clks_per_metro,
int notated_32nd_per_quarter
)
{
MIDITimedMessage msg;
int denom= 1<<denom_power;
msg.SetTimeSig ( ( unsigned char ) num, ( unsigned char ) denom );
msg.SetTime ( time );
MIDISystemExclusive *sysex = new MIDISystemExclusive ( 4 );
sysex->PutByte ( ( unsigned char ) num );
sysex->PutByte ( ( unsigned char ) denom_power );
sysex->PutByte ( ( unsigned char ) clks_per_metro );
sysex->PutByte ( ( unsigned char ) notated_32nd_per_quarter );
AddEventToMultiTrack ( msg, sysex, cur_track );
}
