void SendMidiMessage(SmfMessage m)
{
if ((m.Value & 0xFF) == 0xF0)
WriteSysEx (0xF0, m.Data);
else if ((m.Value & 0xFF) == 0xF7)
WriteSysEx (0xF7, m.Data);
else if ((m.Value & 0xFF) == 0xFF)
return; // meta. Nothing to send.
else
output.Write (0, new MidiMessage (m.StatusByte, m.Msb, m.Lsb));
}
// Override it to customize track dispatcher. It would be
// useful to split note messages out from non-note ones,
// to ease data reading.
public virtual int GetTrackID(SmfMessage e)
{
switch (e.Event.EventType)
{
case SmfEvent.Meta:
case SmfEvent.SysEx1:
case SmfEvent.SysEx2:
return(-1);
default:
return(e.Event.Channel);
}
}
public virtual void ProcessMessage(SmfMessage msg)
{
switch (msg.MessageType) {
case SmfMessage.NoteOn:
Channels [msg.Channel].NoteVelocity [msg.Msb] = msg.Lsb;
break;
case SmfMessage.NoteOff:
Channels [msg.Channel].NoteVelocity [msg.Msb] = 0;
break;
case SmfMessage.PAf:
Channels [msg.Channel].PAfVelocity [msg.Msb] = msg.Lsb;
break;
case SmfMessage.CC:
// FIXME: handle RPNs and NRPNs by DTE
switch (msg.Msb) {
case SmfCC.NrpnMsb:
case SmfCC.NrpnLsb:
Channels [msg.Channel].DteTarget = DteTarget.Nrpn;
break;
case SmfCC.RpnMsb:
case SmfCC.RpnLsb:
Channels [msg.Channel].DteTarget = DteTarget.Rpn;
break;
case SmfCC.DteMsb:
Channels [msg.Channel].ProcessDte (msg.Lsb, true);
break;
case SmfCC.DteLsb:
Channels [msg.Channel].ProcessDte (msg.Lsb, false);
break;
case SmfCC.DteIncrement:
Channels [msg.Channel].ProcessDteIncrement ();
break;
case SmfCC.DteDecrement:
Channels [msg.Channel].ProcessDteDecrement ();
break;
}
Channels [msg.Channel].Controls [msg.Msb] = msg.Lsb;
break;
case SmfMessage.Program:
Channels [msg.Channel].Program = msg.Msb;
break;
case SmfMessage.CAf:
Channels [msg.Channel].CAf = msg.Msb;
break;
case SmfMessage.Pitch:
Channels [msg.Channel].PitchBend = (short) ((msg.Msb << 7) + msg.Lsb);
break;
}
if (MessageReceived != null)
MessageReceived (msg);
}
SmfTrack GenerateTrack(MmlResolvedTrack source)
{
var rtrk = new SmfTrack ();
int cur = 0;
foreach (var ev in source.Events) {
SmfEvent evt;
if (ev.Arguments.Count == 3)
evt = new SmfEvent (ev.Arguments [0], ev.Arguments [1], ev.Arguments [2], null);
else if (ev.Arguments [0] == 0xFF)
evt = new SmfEvent (ev.Arguments [0], ev.Arguments [1], 0, ev.Arguments.Skip (2).ToArray ());
else
evt = new SmfEvent (ev.Arguments [0], 0, 0, ev.Arguments.Skip (1).ToArray ());
var msg = new SmfMessage (ev.Tick - cur, evt);
rtrk.Messages.Add (msg);
cur = ev.Tick;
}
rtrk.Messages.Add (new SmfMessage (0, new SmfEvent (0xFF, 0x2F, 0, new byte [0])));
return rtrk;
}
public virtual void HandleEvent(SmfMessage m)
{
if (m.DeltaTime != 0)
{
var ms = GetDeltaTimeInMilliseconds(m.DeltaTime);
time_manager.AdvanceBy(ms);
}
if (m.Event.StatusByte == 0xFF)
{
if (m.Event.Msb == SmfMetaType.Tempo)
{
current_tempo = SmfMetaType.GetTempo(m.Event.Data);
}
else if (m.Event.Msb == SmfMetaType.TimeSignature && m.Event.Data.Length == 4)
{
Array.Copy(m.Event.Data, current_time_signature, 4);
}
}
OnEvent(m.Event);
PlayDeltaTime += m.DeltaTime;
}
// FIXME: it should rather be implemented to iterate all
// tracks with index to messages, pick the track which contains
// the nearest event and push the events into the merged queue.
// It's simpler, and costs less by removing sort operation
// over thousands of events.
SmfMusic GetMergedMessages()
{
IList<SmfMessage> l = new List<SmfMessage> ();
foreach (var track in source.Tracks) {
int delta = 0;
foreach (var mev in track.Messages) {
delta += mev.DeltaTime;
l.Add (new SmfMessage (delta, mev.Event));
}
}
if (l.Count == 0)
return new SmfMusic () { DeltaTimeSpec = source.DeltaTimeSpec }; // empty (why did you need to sort your song file?)
// Sort() does not always work as expected.
// For example, it does not always preserve event
// orders on the same channels when the delta time
// of event B after event A is 0. It could be sorted
// either as A->B or B->A.
//
// To resolve this ieeue, we have to sort "chunk"
// of events, not all single events themselves, so
// that order of events in the same chunk is preserved
// i.e. [AB] at 48 and [CDE] at 0 should be sorted as
// [CDE] [AB].
var idxl = new List<int> (l.Count);
idxl.Add (0);
int prev = 0;
for (int i = 0; i < l.Count; i++) {
if (l [i].DeltaTime != prev) {
idxl.Add (i);
prev = l [i].DeltaTime;
}
}
idxl.Sort (delegate (int i1, int i2) {
return l [i1].DeltaTime - l [i2].DeltaTime;
});
// now build a new event list based on the sorted blocks.
var l2 = new List<SmfMessage> (l.Count);
int idx;
for (int i = 0; i < idxl.Count; i++)
for (idx = idxl [i], prev = l [idx].DeltaTime; idx < l.Count && l [idx].DeltaTime == prev; idx++)
l2.Add (l [idx]);
//if (l.Count != l2.Count) throw new Exception (String.Format ("Internal eror: count mismatch: l1 {0} l2 {1}", l.Count, l2.Count));
l = l2;
// now messages should be sorted correctly.
var waitToNext = l [0].DeltaTime;
for (int i = 0; i < l.Count - 1; i++) {
if (l [i].Event.Value != 0) { // if non-dummy
var tmp = l [i + 1].DeltaTime - l [i].DeltaTime;
l [i] = new SmfMessage (waitToNext, l [i].Event);
waitToNext = tmp;
}
}
l [l.Count - 1] = new SmfMessage (waitToNext, l [l.Count - 1].Event);
var m = new SmfMusic ();
m.DeltaTimeSpec = source.DeltaTimeSpec;
m.Format = 0;
m.Tracks.Add (new SmfTrack (l));
return m;
}
public void AddMessage(SmfMessage msg)
{
messages.Add (msg);
}
void HandleSmfMessage(SmfMessage m)
{
switch (m.MessageType) {
case SmfMessage.NoteOn:
if (m.Lsb == 0)
goto case SmfMessage.NoteOff; // It is equivalent to note off
int note = GetKeyIndexForNote (m.Msb);
if (note < 0)
break; // out of range
key_rectangles [m.Channel, note].Fill = brush_keyon;
keyon_meter_panel.ProcessKeyOn (m.Channel, m.Msb, m.Lsb);
spectrum_analyzer_panel.ProcessKeyOn (m.Channel, m.Msb, m.Lsb);
break;
case SmfMessage.NoteOff:
note = GetKeyIndexForNote (m.Msb);
if (note < 0)
break; // out of range
Brush c = registers.Channels [m.Channel].Controls [0x40] > 63 ? brush_hold :
IsWhiteKey (note) ? brush_white_key : brush_black_key;
key_rectangles [m.Channel, note].Fill = c;
break;
case SmfMessage.Program:
keyon_meter_panel.SetProgram (m.Channel, m.Msb);
break;
case SmfMessage.CC:
switch (m.Msb) {
case SmfCC.BankSelect:
keyon_meter_panel.SetBank (m.Channel, m.Lsb, true);
break;
case SmfCC.BankSelectLsb:
keyon_meter_panel.SetBank (m.Channel, m.Lsb, false);
break;
case SmfCC.Pan:
keyon_meter_panel.SetPan (m.Channel, m.Lsb);
break;
case SmfCC.Volume:
parameter_visualizers [m.Channel].Volume.SetValue (m.Lsb);
break;
case SmfCC.Expression:
parameter_visualizers [m.Channel].Expression.SetValue (m.Lsb);
break;
case SmfCC.Rsd:
parameter_visualizers [m.Channel].Rsd.SetValue (m.Lsb);
break;
case SmfCC.Csd:
parameter_visualizers [m.Channel].Csd.SetValue (m.Lsb);
break;
case SmfCC.Hold:
parameter_visualizers [m.Channel].Hold.Value = (m.Lsb > 63);
if (m.Lsb < 64 && key_rectangles != null) { // reset held keys to nothing
for (int i = 0; i < 128; i++) {
note = GetKeyIndexForNote (i);
if (note < 0)
continue;
var rect = key_rectangles [m.Channel, note];
if (rect == null)
continue;
if (((SolidColorBrush) rect.Fill).Color == color_hold)
key_rectangles [m.Channel, note].Fill = IsWhiteKey (i) ? brush_white_key : brush_black_key;
}
}
break;
case SmfCC.PortamentoSwitch:
parameter_visualizers [m.Channel].PortamentoSwitch.Value = (m.Lsb > 63);
break;
case SmfCC.Sostenuto:
parameter_visualizers [m.Channel].Sostenuto.Value = (m.Lsb > 63);
break;
case SmfCC.SoftPedal:
parameter_visualizers [m.Channel].SoftPedal.Value = (m.Lsb > 63);
break;
}
break;
case SmfMessage.Meta:
switch (m.MetaType) {
case SmfMetaType.TimeSignature:
play_time_status_panel.SetTimeMeterValues (m.Data);
break;
case SmfMetaType.Tempo:
foreach (var view in player_status_views)
view.ProcessChangeTempo ((int) ((60.0 / SmfMetaType.GetTempo (m.Data)) * 1000000.0));
break;
}
break;
}
}
void DrawNoteOnOff(SmfMessage m)
{
int note = GetKeyIndexForNote (m.Msb);
if (note < 0)
return; // out of range
int octave = note / 12;
int key = note % 12;
int channel = m.Channel;
bool isKeyOn = m.MessageType == SmfMessage.NoteOn && m.Lsb != 0;
float x = octave * key_width * 7;
float y = GetChannelYPos (channel) + ch_height - key_height;
int k = key_to_keyboard_idx [key];
if (IsWhiteKey (key)) {
paint.Color = (isKeyOn ? color_keyon : color_white_key);
canvas.DrawCircle(x + k * key_width + 3, y + 12, 2, paint);
//keyon_meter_panel.ProcessKeyOn (m.Channel, m.Msb, m.Lsb);
//spectrum_analyzer_panel.ProcessKeyOn (m.Channel, m.Msb, m.Lsb);
} else {
paint.Color = (isKeyOn ? color_keyon : color_black_key);
int blackKeyStartX = (int) (x + (k + 0.8) * key_width);
canvas.DrawCircle(blackKeyStartX + 2, y + 1 + 5, 1, paint);
}
needs_redraw = true;
}
public SmfEvent(int deltaTime, SmfMessage msg)
{
DeltaTime = deltaTime;
Message = msg;
}
protected virtual void OnMessage(SmfMessage m)
{
if (MessageReceived != null)
MessageReceived (m);
}
// FIXME: it should rather be implemented to iterate all
// tracks with index to messages, pick the track which contains
// the nearest event and push the events into the merged queue.
// It's simpler, and costs less by removing sort operation
// over thousands of events.
SmfMusic GetMergedMessages()
{
IList <SmfMessage> l = new List <SmfMessage> ();
foreach (var track in source.Tracks)
{
int delta = 0;
foreach (var mev in track.Messages)
{
delta += mev.DeltaTime;
l.Add(new SmfMessage(delta, mev.Event));
}
}
if (l.Count == 0)
{
return new SmfMusic()
{
DeltaTimeSpec = source.DeltaTimeSpec
}
}
; // empty (why did you need to sort your song file?)
// Sort() does not always work as expected.
// For example, it does not always preserve event
// orders on the same channels when the delta time
// of event B after event A is 0. It could be sorted
// either as A->B or B->A.
//
// To resolve this ieeue, we have to sort "chunk"
// of events, not all single events themselves, so
// that order of events in the same chunk is preserved
// i.e. [AB] at 48 and [CDE] at 0 should be sorted as
// [CDE] [AB].
var idxl = new List <int> (l.Count);
idxl.Add(0);
int prev = 0;
for (int i = 0; i < l.Count; i++)
{
if (l [i].DeltaTime != prev)
{
idxl.Add(i);
prev = l [i].DeltaTime;
}
}
idxl.Sort(delegate(int i1, int i2) {
return(l [i1].DeltaTime - l [i2].DeltaTime);
});
// now build a new event list based on the sorted blocks.
var l2 = new List <SmfMessage> (l.Count);
int idx;
for (int i = 0; i < idxl.Count; i++)
{
for (idx = idxl [i], prev = l [idx].DeltaTime; idx < l.Count && l [idx].DeltaTime == prev; idx++)
{
l2.Add(l [idx]);
}
}
//if (l.Count != l2.Count) throw new Exception (String.Format ("Internal eror: count mismatch: l1 {0} l2 {1}", l.Count, l2.Count));
l = l2;
// now messages should be sorted correctly.
var waitToNext = l [0].DeltaTime;
for (int i = 0; i < l.Count - 1; i++)
{
if (l [i].Event.Value != 0) // if non-dummy
{
var tmp = l [i + 1].DeltaTime - l [i].DeltaTime;
l [i] = new SmfMessage(waitToNext, l [i].Event);
waitToNext = tmp;
}
}
l [l.Count - 1] = new SmfMessage(waitToNext, l [l.Count - 1].Event);
var m = new SmfMusic();
m.DeltaTimeSpec = source.DeltaTimeSpec;
m.Format = 0;
m.Tracks.Add(new SmfTrack(l));
return(m);
}
}
public void AddMessage(SmfMessage msg)
{
messages.Add(msg);
}
// Override it to customize track dispatcher. It would be
// useful to split note messages out from non-note ones,
// to ease data reading.
public virtual int GetTrackID(SmfMessage e)
{
switch (e.Event.EventType) {
case SmfEvent.Meta:
case SmfEvent.SysEx1:
case SmfEvent.SysEx2:
return -1;
default:
return e.Event.Channel;
}
}
public void AddMessage(int deltaInsertAt, SmfMessage e)
{
e = new SmfMessage(deltaInsertAt - TotalDeltaTime, e.Event);
Track.Messages.Add(e);
TotalDeltaTime = deltaInsertAt;
}
public void AddMessage(int deltaInsertAt, SmfMessage e)
{
e = new SmfMessage (deltaInsertAt - TotalDeltaTime, e.Event);
Track.Messages.Add (e);
TotalDeltaTime = deltaInsertAt;
}
public virtual void HandleEvent(SmfMessage m)
{
if (m.DeltaTime != 0) {
var ms = GetDeltaTimeInMilliseconds (m.DeltaTime);
time_manager.AdvanceBy (ms);
}
if (m.Event.StatusByte == 0xFF) {
if (m.Event.Msb == SmfMetaType.Tempo)
current_tempo = SmfMetaType.GetTempo (m.Event.Data);
else if (m.Event.Msb == SmfMetaType.TimeSignature && m.Event.Data.Length == 4)
Array.Copy (m.Event.Data, current_time_signature, 4);
}
OnEvent (m.Event);
PlayDeltaTime += m.DeltaTime;
}
