/// <summary>
/// Constructs a MidiEvent from a BinaryStream
/// </summary>
/// <param name="br">The binary stream of MIDI data</param>
/// <param name="previous">The previous MIDI event (pass null for first event)</param>
/// <returns>A new MidiEvent</returns>
public static MidiEvent ReadNextEvent(BinaryReader br, MidiEvent previous)
{
int deltaTime = MidiEvent.ReadVarInt(br);
MidiCommandCode commandCode;
int channel = 1;
byte b = br.ReadByte();
if((b & 0x80) == 0)
{
// a running command - command & channel are same as previous
commandCode = previous.CommandCode;
channel = previous.Channel;
br.BaseStream.Position--; // need to push this back
}
else
{
if((b & 0xF0) == 0xF0)
{
// both bytes are used for command code in this case
commandCode = (MidiCommandCode) b;
}
else
{
commandCode = (MidiCommandCode) (b & 0xF0);
channel = (b & 0x0F) + 1;
}
}
MidiEvent me;
switch(commandCode)
{
case MidiCommandCode.NoteOn:
me = new NoteOnEvent(br);
break;
case MidiCommandCode.NoteOff:
case MidiCommandCode.KeyAfterTouch:
me = new NoteEvent(br);
break;
//case MidiCommandCode.ControlChange:
// me = new ControlChangeEvent(br);
// break;
case MidiCommandCode.PatchChange:
me = new PatchChangeEvent(br);
break;
case MidiCommandCode.ChannelAfterTouch:
me = new ChannelAfterTouchEvent(br);
break;
case MidiCommandCode.PitchWheelChange:
me = new PitchWheelChangeEvent(br);
break;
case MidiCommandCode.TimingClock:
case MidiCommandCode.StartSequence:
case MidiCommandCode.ContinueSequence:
case MidiCommandCode.StopSequence:
me = new MidiEvent();
break;
case MidiCommandCode.Sysex:
me = SysexEvent.ReadSysexEvent(br);
break;
case MidiCommandCode.MetaEvent:
try {
me = MetaEvent.ReadMetaEvent(br);
}
catch(FormatException) {
me = new MidiEvent();
}
break;
default:
me = new MidiEvent();
break;
//throw new FormatException(String.Format("Unsupported MIDI Command Code {0:X2}",(byte) commandCode));
}
me.channel = channel;
me.deltaTime = deltaTime;
me.commandCode = commandCode;
return me;
}
/// <summary>
/// Creates a MidiEvent from a raw message received using
/// the MME MIDI In APIs
/// </summary>
/// <param name="rawMessage">The short MIDI message</param>
/// <returns>A new MIDI Event</returns>
public static MidiEvent FromRawMessage(int rawMessage)
{
long absoluteTime = 0;
int b = rawMessage & 0xFF;
int data1 = (rawMessage >> 8) & 0xFF;
int data2 = (rawMessage >> 16) & 0xFF;
MidiCommandCode commandCode;
int channel = 1;
if ((b & 0xF0) == 0xF0)
{
// both bytes are used for command code in this case
commandCode = (MidiCommandCode)b;
}
else
{
commandCode = (MidiCommandCode)(b & 0xF0);
channel = (b & 0x0F) + 1;
}
MidiEvent me;
switch (commandCode)
{
case MidiCommandCode.NoteOn:
case MidiCommandCode.NoteOff:
case MidiCommandCode.KeyAfterTouch:
if (data2 > 0 && commandCode == MidiCommandCode.NoteOn)
{
me = new NoteOnEvent(absoluteTime, channel, data1, data2, 0);
}
else
{
me = new NoteEvent(absoluteTime, channel, commandCode, data1, data2);
}
break;
//case MidiCommandCode.ControlChange:
// me = new ControlChangeEvent(absoluteTime,channel,(MidiController)data1,data2);
// break;
case MidiCommandCode.PatchChange:
me = new PatchChangeEvent(absoluteTime,channel,data1);
break;
case MidiCommandCode.ChannelAfterTouch:
me = new ChannelAfterTouchEvent(absoluteTime,channel,data1);
break;
case MidiCommandCode.PitchWheelChange:
me = new PitchWheelChangeEvent(absoluteTime, channel, data1 + (data2 << 7));
break;
case MidiCommandCode.TimingClock:
case MidiCommandCode.StartSequence:
case MidiCommandCode.ContinueSequence:
case MidiCommandCode.StopSequence:
case MidiCommandCode.AutoSensing:
me = new MidiEvent(absoluteTime,channel,commandCode);
break;
case MidiCommandCode.MetaEvent:
case MidiCommandCode.Sysex:
default:
throw new FormatException(String.Format("Unsupported MIDI Command Code for Raw Message {0}", commandCode));
}
return me;
}
/// <summary>
/// Constructs a MidiEvent from a BinaryStream
/// </summary>
/// <param name="br">The binary stream of MIDI data</param>
/// <param name="previous">The previous MIDI event (pass null for first event)</param>
/// <returns>A new MidiEvent</returns>
public static MidiEvent ReadNextEvent(BinaryReader br, MidiEvent previous)
{
int deltaTime = MidiEvent.ReadVarInt(br);
MidiCommandCode commandCode;
int channel = 1;
byte b = br.ReadByte();
if ((b & 0x80) == 0)
{
// a running command - command & channel are same as previous
commandCode = previous.CommandCode;
channel = previous.Channel;
br.BaseStream.Position--; // need to push this back
}
else
{
if ((b & 0xF0) == 0xF0)
{
// both bytes are used for command code in this case
commandCode = (MidiCommandCode)b;
}
else
{
commandCode = (MidiCommandCode)(b & 0xF0);
channel = (b & 0x0F) + 1;
}
}
MidiEvent me;
switch (commandCode)
{
case MidiCommandCode.NoteOn:
me = new NoteOnEvent(br);
break;
case MidiCommandCode.NoteOff:
case MidiCommandCode.KeyAfterTouch:
me = new NoteEvent(br);
break;
case MidiCommandCode.ControlChange:
me = new ControlChangeEvent(br);
break;
case MidiCommandCode.PatchChange:
me = new PatchChangeEvent(br);
break;
case MidiCommandCode.ChannelAfterTouch:
me = new ChannelAfterTouchEvent(br);
break;
case MidiCommandCode.PitchWheelChange:
me = new PitchWheelChangeEvent(br);
break;
case MidiCommandCode.TimingClock:
case MidiCommandCode.StartSequence:
case MidiCommandCode.ContinueSequence:
case MidiCommandCode.StopSequence:
me = new MidiEvent();
break;
case MidiCommandCode.Sysex:
me = SysexEvent.ReadSysexEvent(br);
break;
case MidiCommandCode.MetaEvent:
me = MetaEvent.ReadMetaEvent(br);
break;
default:
throw new FormatException(String.Format("Unsupported MIDI Command Code {0:X2}", (byte)commandCode));
}
me.channel = channel;
me.deltaTime = deltaTime;
me.commandCode = commandCode;
return(me);
}
/// <summary>
/// Creates a MidiEvent from a raw message received using
/// the MME MIDI In APIs
/// </summary>
/// <param name="rawMessage">The short MIDI message</param>
/// <returns>A new MIDI Event</returns>
public static MidiEvent FromRawMessage(int rawMessage)
{
long absoluteTime = 0;
int b = rawMessage & 0xFF;
int data1 = (rawMessage >> 8) & 0xFF;
int data2 = (rawMessage >> 16) & 0xFF;
MidiCommandCode commandCode;
int channel = 1;
if ((b & 0xF0) == 0xF0)
{
// both bytes are used for command code in this case
commandCode = (MidiCommandCode)b;
}
else
{
commandCode = (MidiCommandCode)(b & 0xF0);
channel = (b & 0x0F) + 1;
}
MidiEvent me;
switch (commandCode)
{
case MidiCommandCode.NoteOn:
case MidiCommandCode.NoteOff:
case MidiCommandCode.KeyAfterTouch:
if (data2 > 0 && commandCode == MidiCommandCode.NoteOn)
{
me = new NoteOnEvent(absoluteTime, channel, data1, data2, 0);
}
else
{
me = new NoteEvent(absoluteTime, channel, commandCode, data1, data2);
}
break;
case MidiCommandCode.ControlChange:
me = new ControlChangeEvent(absoluteTime, channel, (MidiController)data1, data2);
break;
case MidiCommandCode.PatchChange:
me = new PatchChangeEvent(absoluteTime, channel, data1);
break;
case MidiCommandCode.ChannelAfterTouch:
me = new ChannelAfterTouchEvent(absoluteTime, channel, data1);
break;
case MidiCommandCode.PitchWheelChange:
me = new PitchWheelChangeEvent(absoluteTime, channel, data1 + (data2 << 7));
break;
case MidiCommandCode.TimingClock:
case MidiCommandCode.StartSequence:
case MidiCommandCode.ContinueSequence:
case MidiCommandCode.StopSequence:
case MidiCommandCode.AutoSensing:
me = new MidiEvent(absoluteTime, channel, commandCode);
break;
case MidiCommandCode.MetaEvent:
case MidiCommandCode.Sysex:
default:
throw new FormatException(String.Format("Unsupported MIDI Command Code for Raw Message {0}", commandCode));
}
return(me);
}
/// <summary>
/// Constructs a MidiEvent from a BinaryStream
/// </summary>
/// <param name="br">The binary stream of MIDI data</param>
/// <param name="previous">The previous MIDI event (pass null for first event)</param>
/// <returns>A new MidiEvent</returns>
// Token: 0x060004C8 RID: 1224 RVA: 0x0000FF78 File Offset: 0x0000E178
public static MidiEvent ReadNextEvent(BinaryReader br, MidiEvent previous)
{
int num = MidiEvent.ReadVarInt(br);
int num2 = 1;
byte b = br.ReadByte();
MidiCommandCode midiCommandCode;
if ((b & 128) == 0)
{
midiCommandCode = previous.CommandCode;
num2 = previous.Channel;
br.BaseStream.Position -= 1L;
}
else if ((b & 240) == 240)
{
midiCommandCode = (MidiCommandCode)b;
}
else
{
midiCommandCode = (MidiCommandCode)(b & 240);
num2 = (int)((b & 15) + 1);
}
MidiCommandCode midiCommandCode2 = midiCommandCode;
MidiEvent midiEvent;
if (midiCommandCode2 <= MidiCommandCode.ControlChange)
{
if (midiCommandCode2 <= MidiCommandCode.NoteOn)
{
if (midiCommandCode2 != MidiCommandCode.NoteOff)
{
if (midiCommandCode2 != MidiCommandCode.NoteOn)
{
goto IL_15F;
}
midiEvent = new NoteOnEvent(br);
goto IL_175;
}
}
else if (midiCommandCode2 != MidiCommandCode.KeyAfterTouch)
{
if (midiCommandCode2 != MidiCommandCode.ControlChange)
{
goto IL_15F;
}
midiEvent = new ControlChangeEvent(br);
goto IL_175;
}
midiEvent = new NoteEvent(br);
goto IL_175;
}
if (midiCommandCode2 <= MidiCommandCode.ChannelAfterTouch)
{
if (midiCommandCode2 == MidiCommandCode.PatchChange)
{
midiEvent = new PatchChangeEvent(br);
goto IL_175;
}
if (midiCommandCode2 == MidiCommandCode.ChannelAfterTouch)
{
midiEvent = new ChannelAfterTouchEvent(br);
goto IL_175;
}
}
else
{
if (midiCommandCode2 == MidiCommandCode.PitchWheelChange)
{
midiEvent = new PitchWheelChangeEvent(br);
goto IL_175;
}
if (midiCommandCode2 == MidiCommandCode.Sysex)
{
midiEvent = SysexEvent.ReadSysexEvent(br);
goto IL_175;
}
switch (midiCommandCode2)
{
case MidiCommandCode.TimingClock:
case MidiCommandCode.StartSequence:
case MidiCommandCode.ContinueSequence:
case MidiCommandCode.StopSequence:
midiEvent = new MidiEvent();
goto IL_175;
case MidiCommandCode.MetaEvent:
midiEvent = MetaEvent.ReadMetaEvent(br);
goto IL_175;
}
}
IL_15F:
throw new FormatException(string.Format("Unsupported MIDI Command Code {0:X2}", (byte)midiCommandCode));
IL_175:
midiEvent.channel = num2;
midiEvent.deltaTime = num;
midiEvent.commandCode = midiCommandCode;
return(midiEvent);
}
private void sr_OnTrackEvent(object sender, TrackEventArgs e)
{
long counter = 0;
long notesBefore = TotalNotes;
foreach (var ev in e.Events.Where(x => x is MidiUtils.IO.MidiEvent))
{
counter++;
// Convert the event to NAudio's system so we can get a shortMessage
var em = (MidiUtils.IO.MidiEvent)ev;
if (ev.Type == EventType.NoteOn) TotalNotes++;
MidiEvent me;
try
{
switch (ev.Type)
{
case EventType.NoteOn:
case EventType.NoteOff:
case EventType.PolyphonicKeyPressure:
if (em.Data2 > 0 && ev.Type == EventType.NoteOn)
{
me = new NoteOnEvent(ev.Tick, em.Channel + 1, em.Data1, em.Data2, 0);
}
else
{
me = new NoteEvent(ev.Tick, em.Channel + 1, (MidiCommandCode)(int)ev.Type, em.Data1, em.Data2);
}
break;
case EventType.ControlChange:
me = new ControlChangeEvent(ev.Tick, em.Channel + 1, (MidiController)em.Data1, em.Data2);
break;
case EventType.ProgramChange:
me = new PatchChangeEvent(ev.Tick, em.Channel + 1, em.Data1);
break;
case EventType.ChannelPressure:
me = new ChannelAfterTouchEvent(ev.Tick, em.Channel + 1, em.Data1);
break;
case EventType.Pitchbend:
me = new PitchWheelChangeEvent(ev.Tick, em.Channel + 1, em.Data1 + (em.Data2 << 7));
break;
default:
throw new InvalidOperationException("Unsupported MIDI event type: " + ev.Type);
}
}
catch (Exception ex)
{
Exceptions++;
continue;
}
// Send the message
try { _midi.Send(me.GetAsShortMessage()); }
catch (MmException ex)
{
if ((int)ex.Result == 67) Overloads++;
else Exceptions++;
continue;
}
if (ev.Type == EventType.NoteOn) SuccessNotes++;
}
PeakNotesPerInterval = Math.Max(PeakNotesPerInterval, TotalNotes - notesBefore);
PeakEventsPerInterval = Math.Max(PeakEventsPerInterval, counter);
TotalEvents += counter;
}
