private void fromMidiMls(BinaryReader file, int headerTracks, bool normalisation, bool loop, int loopformat)
{
events = new List<List<List<int>>>();
MIDI mid = new MIDI(file);
int tempo = 0;
trackCount = mid.TrackCount - headerTracks;
// search in header tracks for tempo
for (int i = 0; i < headerTracks; i++ )
{
mid.TrackPosition = i;
int[] status;
while (true)
{
status = mid.read();
status = mid.read();
if (status[0] == 0xFF)
{
// forgot why to divide by 2, maybe because it would go too fast otherwise
if (status[1] == 0x51) tempo = (60000000 / ((status[3] << 16) + (status[4] << 8) + (status[5])));
else if (status[1] == 0x2F) break;
}
}
}
// read the other tracks
for (int i = headerTracks; i < mid.TrackCount; i++)
{
int pos = i - headerTracks;
mid.TrackPosition = i;
events.Add(new List<List<int>>());
bool endOfTrack = false;
int[] status;
int rest = 0;
int note = 0;
int noteLength = 0;
decimal noteVolume = 0;
decimal trackVolume = 0x7F; // this is the standard for each midi, if the volume isn't specified
int volume = 0;
int loopStart = 0;
// always first the tempo to play safe
if (tempo == 0) events[pos].Add(new List<int> { 0xF9, 0x78 });
else events[pos].Add(new List<int> { 0xF9, tempo });
while (!endOfTrack)
{
// ---------- read rest ----------
rest = Convert.ToInt32(Convert.ToDecimal(mid.read()[0]) / (Convert.ToDecimal(mid.Devision) / 0x30));
if (note != 0) noteLength += rest;
if (rest != 0 && note == 0)
while (true)
if (rest > 0x90) { events[pos].Add(new List<int> { 0xF6, 0x90 }); rest -= 0x90; }
else { events[pos].Add(new List<int> { 0xF6, rest }); rest = 0; break; }
// ---------- read event ----------
status = mid.read();
switch (status[0] & 0xF0)
{
case 0x90: // note on
if (status[1] == 0x7F) loopStart = events[pos].Count;//first look for a loop
else if (note == 0)
{
note = status[1];
noteVolume = status[2];
noteLength = 0;
}
// quick and dirty solution on note normalisation
// notice that you cannot normalize a note when the length = 0, thus more notes starting at the same time
// this will end up with 0 length notes and will eventually lead to a crash
// because 0 length notes are read as extended notes
else if (normalisation && noteLength != 0)
{
// write volume changes
int newVolume = Convert.ToInt32(trackVolume / 100 * (noteVolume / 0x7F * 100)) * 2;
if (volume != newVolume)
{
volume = newVolume;
events[pos].Add(new List<int> { 0xF1, volume });
}
// write note/notes
while (true)
if (noteLength > 0x90) { events[pos].Add(new List<int> { 0x00, note + 0x80, 0x90 }); noteLength -= 0x90; }
else { events[pos].Add(new List<int> { noteLength, note }); break; }
// setup new note
note = status[1];
noteVolume = status[2];
noteLength = 0;
}
break;
case 0x80:
if (note == status[1] && noteLength != 0) // note off
{
// write volume changes
int newVolume = Convert.ToInt32(trackVolume / 100 * (noteVolume / 0x7F * 100)) * 2;
if (volume != newVolume)
{
volume = newVolume;
events[pos].Add(new List<int> { 0xF1, volume });
}
// write note/notes
while (true)
if (noteLength > 0x90) { events[pos].Add(new List<int> { 0x00, note + 0x80, 0x90 }); noteLength -= 0x90; }
else { events[pos].Add(new List<int> { noteLength, note }); break; }
// this note has been done, clear note to read next note
note = 0;
}
break;
case 0xB0: if (status[1] == 0x07) trackVolume = status[2]; break; // channel volume
case 0xC0: events[pos].Add(new List<int> { 0xF0, status[1] }); break; // instrument
case 0xF0:
if (status[1] == 0x2F) // end of track
{
if (loop)
{
if (loopformat == 0) loopStart = 0;
events[pos].Add(new List<int> { 0xF8, (0xFFFF - Common.giveByteCount(events[pos], loopStart)) });
endOfTrack = true;
}
else events[pos].Add(new List<int> { 0xFF }); endOfTrack = true;
}
else if (status[1] == 0x51) // volume
{
events[pos].Add(new List<int> { 0xF9, (60000000 / ((status[3] << 16) + (status[4] << 8) + (status[5]))) });
}
break;
}
}
}
}
private void fromMidiBkg(BinaryReader file, int headerTracks)
{
events = new List <List <List <int> > >();
MIDI mid = new MIDI(file);
trackCount = mid.TrackCount;
for (int i = 0; i < trackCount; i++)
{
int channelNumber;
if (i > headerTracks)
{
channelNumber = i - headerTracks;
}
else
{
channelNumber = 0;
}
mid.TrackPosition = i;
events.Add(new List <List <int> >());
bool endOfTrack = false;
while (!endOfTrack)
{
int rest = 0;
if (mid.Devision != 0)
{
rest = mid.read()[0] / mid.Devision;
}
else
{
rest = mid.read()[0];
}
if (rest > 0x00 && rest <= 0xFF)
{
events[i].Add(new List <int> {
0x01, rest
}); // 8-bit rest
}
if (rest > 0xFF && rest <= 0xFFFF)
{
events[i].Add(new List <int> {
0x02, rest
}); // 16-bit rest
}
if (rest > 0xFFFF && rest <= 0xFFFFFF)
{
events[i].Add(new List <int> {
0x03, rest
}); // 16-bit rest
}
if (rest > 0xFFFFFF)
{
MessageBox.Show("delta time larger than 0xFFFFFF, not used");
}
int[] status = mid.read();
switch (status[0] & 0xF0)
{
case 0x80: events[i].Add(new List <int> {
(channelNumber << 4) + 0x06, status[1], status[2]
}); break; // note off
case 0x90: events[i].Add(new List <int> {
(channelNumber << 4) + 0x05, status[1], status[2]
}); break; // note on
case 0xB0: if (status[1] == 0x07)
{
events[i].Add(new List <int> {
(channelNumber << 4) + 0x07, status[1], status[2]
});
}
break; // channel volume
case 0xC0: events[i].Add(new List <int> {
(channelNumber << 4) + 0x08, status[1]
}); break; // instrument
case 0xE0: events[i].Add(new List <int> {
(channelNumber << 4) + 0x0A, status[2] * 0x80
}); break; // pitch bend
case 0xF0: if (status[1] == 0x2F)
{
events[i].Add(new List <int> {
0x0B
}); endOfTrack = true;
} // end of track
else if (status[1] == 0x51)
{
events[i].Add(new List <int> {
0x00, (status[3] << 16) + (status[4] << 8) + (status[5])
});
} // tempo
break;
}
}
}
mid.close();
}
private void fromMidiBkg(BinaryReader file, int headerTracks)
{
events = new List<List<List<int>>>();
MIDI mid = new MIDI(file);
trackCount = mid.TrackCount;
for (int i = 0; i < trackCount; i++)
{
int channelNumber;
if (i > headerTracks) channelNumber = i - headerTracks;
else channelNumber = 0;
mid.TrackPosition = i;
events.Add(new List<List<int>>());
bool endOfTrack = false;
while (!endOfTrack)
{
int rest = 0;
if (mid.Devision != 0) rest = mid.read()[0] / mid.Devision;
else rest = mid.read()[0];
if (rest > 0x00 && rest <= 0xFF) events[i].Add(new List<int> { 0x01, rest }); // 8-bit rest
if (rest > 0xFF && rest <= 0xFFFF) events[i].Add(new List<int> { 0x02, rest }); // 16-bit rest
if (rest > 0xFFFF && rest <= 0xFFFFFF) events[i].Add(new List<int> { 0x03, rest }); // 16-bit rest
if (rest > 0xFFFFFF) MessageBox.Show("delta time larger than 0xFFFFFF, not used");
int[] status = mid.read();
switch(status[0] & 0xF0)
{
case 0x80: events[i].Add(new List<int> { (channelNumber << 4) + 0x06, status[1], status[2] }); break; // note off
case 0x90: events[i].Add(new List<int> { (channelNumber << 4) + 0x05, status[1], status[2] }); break; // note on
case 0xB0: if (status[1] == 0x07) events[i].Add(new List<int> { (channelNumber << 4) + 0x07, status[1], status[2] }); break; // channel volume
case 0xC0: events[i].Add(new List<int> { (channelNumber << 4) + 0x08, status[1] }); break; // instrument
case 0xE0: events[i].Add(new List<int> { (channelNumber << 4) + 0x0A, status[2] * 0x80 }); break; // pitch bend
case 0xF0: if (status[1] == 0x2F) { events[i].Add(new List<int> { 0x0B }); endOfTrack = true; } // end of track
else if (status[1] == 0x51) { events[i].Add(new List<int> { 0x00, (status[3] << 16) + (status[4] << 8) + (status[5]) }); } // tempo
break;
}
}
}
mid.close();
}
private void fromMidiMls(BinaryReader file, int headerTracks, bool normalisation, bool loop, int loopformat)
{
events = new List <List <List <int> > >();
MIDI mid = new MIDI(file);
int tempo = 0;
trackCount = mid.TrackCount - headerTracks;
// search in header tracks for tempo
for (int i = 0; i < headerTracks; i++)
{
mid.TrackPosition = i;
int[] status;
while (true)
{
status = mid.read();
status = mid.read();
if (status[0] == 0xFF)
{
// forgot why to divide by 2, maybe because it would go too fast otherwise
if (status[1] == 0x51)
{
tempo = (60000000 / ((status[3] << 16) + (status[4] << 8) + (status[5])));
}
else if (status[1] == 0x2F)
{
break;
}
}
}
}
// read the other tracks
for (int i = headerTracks; i < mid.TrackCount; i++)
{
int pos = i - headerTracks;
mid.TrackPosition = i;
events.Add(new List <List <int> >());
bool endOfTrack = false;
int[] status;
int rest = 0;
int note = 0;
int noteLength = 0;
decimal noteVolume = 0;
decimal trackVolume = 0x7F; // this is the standard for each midi, if the volume isn't specified
int volume = 0;
int loopStart = 0;
// always first the tempo to play safe
if (tempo == 0)
{
events[pos].Add(new List <int> {
0xF9, 0x78
});
}
else
{
events[pos].Add(new List <int> {
0xF9, tempo
});
}
while (!endOfTrack)
{
// ---------- read rest ----------
rest = Convert.ToInt32(Convert.ToDecimal(mid.read()[0]) / (Convert.ToDecimal(mid.Devision) / 0x30));
if (note != 0)
{
noteLength += rest;
}
if (rest != 0 && note == 0)
{
while (true)
{
if (rest > 0x90)
{
events[pos].Add(new List <int> {
0xF6, 0x90
}); rest -= 0x90;
}
else
{
events[pos].Add(new List <int> {
0xF6, rest
}); rest = 0; break;
}
}
}
// ---------- read event ----------
status = mid.read();
switch (status[0] & 0xF0)
{
case 0x90: // note on
if (status[1] == 0x7F)
{
loopStart = events[pos].Count; //first look for a loop
}
else if (note == 0)
{
note = status[1];
noteVolume = status[2];
noteLength = 0;
}
// quick and dirty solution on note normalisation
// notice that you cannot normalize a note when the length = 0, thus more notes starting at the same time
// this will end up with 0 length notes and will eventually lead to a crash
// because 0 length notes are read as extended notes
else if (normalisation && noteLength != 0)
{
// write volume changes
int newVolume = Convert.ToInt32(trackVolume / 100 * (noteVolume / 0x7F * 100)) * 2;
if (volume != newVolume)
{
volume = newVolume;
events[pos].Add(new List <int> {
0xF1, volume
});
}
// write note/notes
while (true)
{
if (noteLength > 0x90)
{
events[pos].Add(new List <int> {
0x00, note + 0x80, 0x90
}); noteLength -= 0x90;
}
else
{
events[pos].Add(new List <int> {
noteLength, note
}); break;
}
}
// setup new note
note = status[1];
noteVolume = status[2];
noteLength = 0;
}
break;
case 0x80:
if (note == status[1] && noteLength != 0) // note off
{
// write volume changes
int newVolume = Convert.ToInt32(trackVolume / 100 * (noteVolume / 0x7F * 100)) * 2;
if (volume != newVolume)
{
volume = newVolume;
events[pos].Add(new List <int> {
0xF1, volume
});
}
// write note/notes
while (true)
{
if (noteLength > 0x90)
{
events[pos].Add(new List <int> {
0x00, note + 0x80, 0x90
}); noteLength -= 0x90;
}
else
{
events[pos].Add(new List <int> {
noteLength, note
}); break;
}
}
// this note has been done, clear note to read next note
note = 0;
}
break;
case 0xB0: if (status[1] == 0x07)
{
trackVolume = status[2];
}
break; // channel volume
case 0xC0: events[pos].Add(new List <int> {
0xF0, status[1]
}); break; // instrument
case 0xF0:
if (status[1] == 0x2F) // end of track
{
if (loop)
{
if (loopformat == 0)
{
loopStart = 0;
}
events[pos].Add(new List <int> {
0xF8, (0xFFFF - Common.giveByteCount(events[pos], loopStart))
});
endOfTrack = true;
}
else
{
events[pos].Add(new List <int> {
0xFF
});
} endOfTrack = true;
}
else if (status[1] == 0x51) // volume
{
events[pos].Add(new List <int> {
0xF9, (60000000 / ((status[3] << 16) + (status[4] << 8) + (status[5])))
});
}
break;
}
}
}
}
