private void setLastNoteOnLength(ArrayList events, EventDJZ off)
{
for (int i = events.Count - 1; i >= 0; i--)
{
if (off.channel == ((EventDJZ)events[i]).channel &&
off.note == ((EventDJZ)events[i]).note)
{
((EventDJZ)events[i]).length = off.time - ((EventDJZ)events[i]).time;
((EventDJZ)events[i]).DeltaLength = off.DeltaTime - ((EventDJZ)events[i]).DeltaTime;
}
}
}
private bool haveValue(Hashtable ht, EventDJZ ev, IComparer ic)
{
IEnumerator ie = ht.Keys.GetEnumerator();
ie.Reset();
while (ie.MoveNext())
{
if (ic.Compare(ie.Current, ev) == 0)
{
return(true);
}
}
return(false);
}
public DJZ(Midi mid, int lineCount)
{
midi = mid;
LineCount = lineCount;
Clock = 0;
Division = (UInt32)midi.header.Division;
Tempo = 500000;
SetTempo(Tempo);
TrackCount = midi.header.Tracks;
Events = new ArrayList[TrackCount];
MidiStatus = new byte[TrackCount];
TrackIndex = new int[TrackCount];
CurClock = new UInt32[TrackCount];
CurTime = new double[TrackCount];
PlayNode = new ArrayList();
Controls = new ArrayList();
Lines = new ArrayList();
LastTime = 0;
for (int i = 0; i < TrackCount; i++)
{
Events[i] = new ArrayList();
MidiStatus[i] = 0;
TrackIndex[i] = 0;
CurClock[i] = 0;
CurTime[i] = 0;
}
Int32 newTempo = -1;
Program = new byte[16];
for (int i = 0; i < Program.Length; i++)
{
Program[i] = 0;
}
while (true)
{
bool end = true;
for (int t = 0; t < TrackCount; t++)
{
while (TrackIndex[t] < midi.track[t].dData.Count)
{
//End of track
end = false;
int p = 0;
byte[] data = (byte[])(midi.track[t].dData[TrackIndex[t]]);
Int32[] vlq = Midi.readVLQ(data, p); p += vlq[0];
Int32 deltatime = vlq[1];
//Track timer is zero
if (CurClock[t] == deltatime)
{
TrackIndex[t]++;
CurClock[t] = 0;
byte state = Midi.readMSB8(data, p);
//midi status changed
if (state >= 0x80)
{
MidiStatus[t] = state;
p += 1;
}
else
{
state = MidiStatus[t];
}
//note on/off
if (state >= 0x80 && state <= 0x9f)
{
EventDJZ ev = new EventDJZ();
ev.time = (UInt32)(CurTime[t] / 1000);
ev.state = MidiStatus[t];
ev.note = Midi.readMSB8(data, p); p += 1;
ev.channel = (byte)(state & 0x0f);
ev.program = Program[ev.channel];
ev.pos = (byte)(ev.note % LineCount);
ev.track = t;
ev.metadata = 0;
ev.fullnote = (int)(Clock / (Division * 4));
ev.used = false;
ev.selected = false;
ev.dragged = false;
ev.DeltaTime = (int)Clock;
ev.velo = Midi.readMSB8(data, p); p += 1;
//Console.WriteLine("Note : " + ev.time + " : " + ev.note + " : " + ev.track);
if (ev.velo != 0 && (state >= 0x90 && state <= 0x9f))
{
Events[t].Add(ev);
}
else//note off
{
setLastNoteOnLength(Events[t], ev);
}
}
//program change
if (state >= 0xc0 && state <= 0xcf)
{
int channel = (byte)(state & 0x0f);
int program = Midi.readMSB8(data, p); p += 1;
Program[channel] = (byte)program;
}
//meta
if (state == 0xff)
{
byte meta = Midi.readMSB8(data, p); p += 1;
vlq = Midi.readVLQ(data, p); p += vlq[0];
//meta tempo change
if (meta == 0x51)
{
EventDJZ ev = new EventDJZ();
ev.time = (UInt32)(CurTime[t] / 1000);
ev.state = MidiStatus[t];
ev.note = EventDJZ.CONTROL_BPM;
ev.pos = 0;
ev.track = 0;
ev.metadata = 0;
ev.fullnote = (int)(Clock / (Division * 4));
ev.used = false;
ev.selected = false;
ev.dragged = false;
ev.DeltaTime = (int)Clock;
newTempo = (Int32)Midi.readMSB24(data, p); p += 3;
SetTempo((UInt32)newTempo);//Tempo changed !
//Console.WriteLine("Tempo Changed : " + newTempo);
ev.metadata = (int)BPM;
ev.BPM1000 = (int)(60000000000 / newTempo);
Controls.Add(ev);
}
}
}
else
{
break;
}
}
CurTime[t] += TickTime;
CurClock[t]++;
}//track end
if (Clock % (Division * 4) == 0)
{
EventDJZ ev = new EventDJZ();
ev.time = (UInt32)(LastTime / 1000);
ev.fullnote = (int)(Clock / (Division * 4));
ev.DeltaTime = (int)Clock;
Lines.Add(ev);
// Util.println("count = " + ev.metadata);
}
LastTime += TickTime;
Clock++;
if (end)
{
break;
}
}
LastTime /= 1000;
Console.WriteLine("LastTime=" + LastTime + "(ms)");
}
