public MidiPlayer(MidiMusic music, IMidiOutput output, IMidiPlayerTimeManager timeManager)
{
if (music == null)
{
throw new ArgumentNullException("music");
}
if (output == null)
{
throw new ArgumentNullException("output");
}
if (timeManager == null)
{
throw new ArgumentNullException("timeManager");
}
this.music = music;
this.output = output;
messages = SmfTrackMerger.Merge(music).Tracks [0].Messages;
player = new MidiEventLooper(messages, timeManager, music.DeltaTimeSpec);
player.Starting += () => {
// all control reset on all channels.
for (int i = 0; i < 16; i++)
{
buffer [0] = (byte)(i + 0xB0);
buffer [1] = 0x79;
buffer [2] = 0;
output.Send(buffer, 0, 3, 0);
}
};
EventReceived += (m) => {
switch (m.EventType)
{
case MidiEvent.NoteOn:
case MidiEvent.NoteOff:
if (channel_mask != null && channel_mask [m.Channel])
{
return; // ignore messages for the masked channel.
}
goto default;
case MidiEvent.SysEx1:
case MidiEvent.SysEx2:
if (buffer.Length <= m.Data.Length)
{
buffer = new byte [buffer.Length * 2];
}
buffer [0] = m.StatusByte;
Array.Copy(m.Data, 0, buffer, 1, m.Data.Length);
output.Send(buffer, 0, m.Data.Length + 1, 0);
break;
case MidiEvent.Meta:
// do nothing.
break;
default:
var size = MidiEvent.FixedDataSize(m.StatusByte);
buffer [0] = m.StatusByte;
buffer [1] = m.Msb;
buffer [2] = m.Lsb;
output.Send(buffer, 0, size + 1, 0);
break;
}
};
}
public MidiMessage(int deltaTime, MidiEvent evt)
{
DeltaTime = deltaTime;
Event = evt;
}
public virtual void ProcessEvent(MidiEvent evt)
{
switch (evt.EventType)
{
case MidiEvent.NoteOn:
Channels [evt.Channel].NoteVelocity [evt.Msb] = evt.Lsb;
break;
case MidiEvent.NoteOff:
Channels [evt.Channel].NoteVelocity [evt.Msb] = 0;
break;
case MidiEvent.PAf:
Channels [evt.Channel].PAfVelocity [evt.Msb] = evt.Lsb;
break;
case MidiEvent.CC:
// FIXME: handle RPNs and NRPNs by DTE
switch (evt.Msb)
{
case MidiCC.NrpnMsb:
case MidiCC.NrpnLsb:
Channels [evt.Channel].DteTarget = DteTarget.Nrpn;
break;
case MidiCC.RpnMsb:
case MidiCC.RpnLsb:
Channels [evt.Channel].DteTarget = DteTarget.Rpn;
break;
case MidiCC.DteMsb:
Channels [evt.Channel].ProcessDte(evt.Lsb, true);
break;
case MidiCC.DteLsb:
Channels [evt.Channel].ProcessDte(evt.Lsb, false);
break;
case MidiCC.DteIncrement:
Channels [evt.Channel].ProcessDteIncrement();
break;
case MidiCC.DteDecrement:
Channels [evt.Channel].ProcessDteDecrement();
break;
}
Channels [evt.Channel].Controls [evt.Msb] = evt.Lsb;
break;
case MidiEvent.Program:
Channels [evt.Channel].Program = evt.Msb;
break;
case MidiEvent.CAf:
Channels [evt.Channel].CAf = evt.Msb;
break;
case MidiEvent.Pitch:
Channels [evt.Channel].PitchBend = (short)((evt.Msb << 7) + evt.Lsb);
break;
}
if (EventReceived != null)
{
EventReceived(evt);
}
}