// public byte[] GetMetaStringValue(int offset)
// {
// return (SmfFileHandle[SelectedTrackNumber, offset, 3]);
// }
public byte[] GetMetaValue(int offset)
{
switch ((MetaMsgU16FF)SmfFileHandle.Get16BitInt32(SelectedTrackNumber, offset))
{
//0xff00
case MetaMsgU16FF.SequenceNo:
return(SmfFileHandle[SelectedTrackNumber, offset, 5]);
//MetaHelpers.meta_FF00(SmfFileHandle[SelectedTrackNumber,offset+3],SmfFileHandle[SelectedTrackNumber,offset+4]);
//0xff20
case MetaMsgU16FF.Chanel:
return(SmfFileHandle[SelectedTrackNumber, offset, 4]);
//SmfFileHandle[SelectedTrackNumber,offset+3].ToString() /*SmfStringFormatter.meta_FF20( trk, pos+3 )*/;
//0xff51
case MetaMsgU16FF.Tempo:
return(SmfFileHandle[SelectedTrackNumber, offset, 6]);
//MetaHelpers.meta_FF51(Convert.ToInt32(SmfFileHandle[SelectedTrackNumber].Get24Bit(offset+3)));
//0xff54:
case MetaMsgU16FF.SMPTE:
return(SmfFileHandle[SelectedTrackNumber, offset, 4]);
//MetaHelpers.meta_FF54(); // "?"
//0xff58:
case MetaMsgU16FF.TimeSignature:
return(SmfFileHandle[SelectedTrackNumber, offset, 7]);
//MetaHelpers.meta_FF58(SmfFileHandle[SelectedTrackNumber],3,4,5,6);
//0xff59:
case MetaMsgU16FF.KeySignature:
return(SmfFileHandle[SelectedTrackNumber, offset, 5]);
//MetaHelpers.meta_FF59(SmfFileHandle[SelectedTrackNumber],3,4);
//0xff2f
case MetaMsgU16FF.EndOfTrack:
return(SmfFileHandle[SelectedTrackNumber, offset, 2]);
//0xff7f
case MetaMsgU16FF.SystemSpecific:
return(SmfFileHandle[SelectedTrackNumber, offset, 3]);
//0xff7f
case MetaMsgU16FF.SystemExclusive:
return(SmfFileHandle[SelectedTrackNumber, offset, 4]);
default:
string msg = string.Format("We're not sure how to handle this message {0:X4} {1:X2}. Treating data as META event.", RunningStatus32, SmfFileHandle[SelectedTrackNumber, offset + 1]);
MessageBox.Show(msg, "Press OK to continue", MessageBoxButtons.OK);
return(SmfFileHandle[SelectedTrackNumber, offset, SmfFileHandle[SelectedTrackNumber, offset + 2] + 3]);
}
}
string GetEventString(int offset, int plus)
{
int ExpandedRSE = RunningStatus32 << 8;
if (!MidiMessageInfo.IsMidiBMessage(RunningStatus32))
{
Debug.Assert(false, string.Format("warning… {0:X2}", ExpandedRSE));
return(null);
}
else if (MidiMessageInfo.IsNoteOn(ExpandedRSE))
{
return(GetNoteMsg(0, offset + plus, m9));
}
else if (MidiMessageInfo.IsNoteOff(ExpandedRSE))
{
return(GetNoteMsg(0, offset + plus, m8));
}
else if (MidiMessageInfo.IsKeyAftertouch(ExpandedRSE))
{
return(string.Format(mA, SmfFileHandle[SelectedTrackNumber, offset + plus], SmfFileHandle[SelectedTrackNumber, offset + plus + 1]));
}
else if (MidiMessageInfo.IsControlChange(ExpandedRSE))
{
return(string.Format(mB, SmfStringFormatter.cc[SmfFileHandle.Get8Bit(SelectedTrackNumber, offset + plus)].Replace((char)0xa, (char)0x20).Trim(), SmfFileHandle.Get8Bit(SelectedTrackNumber, offset + plus + 1)));
}
else if (MidiMessageInfo.IsProgramChange(ExpandedRSE))
{
return(SmfStringFormatter.patches[SmfFileHandle[SelectedTrackNumber, offset + plus]].Replace((char)0xa, (char)0x20).Trim());
}
else if (MidiMessageInfo.IsChannelAftertouch(ExpandedRSE))
{
return(MidiMessageInfo.ChannelAftertouchRange.Name);
}
else if (MidiMessageInfo.IsPitchBend(ExpandedRSE))
{
return(MidiMessageInfo.PitchBendRange.Name);
}
else if (MidiMessageInfo.IsSystemMessage(ExpandedRSE))
{
return(MidiMessageInfo.SystemExclusiveMessageRange.Name);
}
else if (MidiMessageInfo.IsSystemCommon(ExpandedRSE))
{
return(MidiMessageInfo.SystemCommonMessageRange.Name);
}
else if (MidiMessageInfo.IsSystemRealtime(ExpandedRSE))
{
return(MidiMessageInfo.SystemRealtimeMessageRange.Name);
}
return(null);
}
/// MESSAGE PARSER see 'ParseTrackMeta'
public virtual int GetTrackTiming(int ntrack, int position, int delta)
{
int DELTA_Returned = delta;
byte CurrentByte = SmfFileHandle.Get8Bit(ntrack, position);
int CurrentIntMessage = SmfFileHandle.Get16BitInt32(ntrack, position);
switch (CurrentIntMessage)
{
case (int)MetaMsgU16FF.Text:
case (int)MetaMsgU16FF.Copyright:
case (int)MetaMsgU16FF.SequenceName:
case (int)MetaMsgU16FF.InstrumentName:
case (int)MetaMsgU16FF.Lyric:
case (int)MetaMsgU16FF.Marker:
case (int)MetaMsgU16FF.Cue:
case (int)MetaMsgU16FF.Port:
case (int)MetaMsgU16FF.SequenceNo:
case (int)MetaMsgU16FF.Chanel:
case (int)MetaMsgU16FF.EndOfTrack:
case (int)MetaMsgU16FF.SMPTE:
DELTA_Returned = GetMetaNextPos(position);
break;
case (int)MetaMsgU16FF.Tempo:
MidiTimeInfo.Tempo = 60000000 / Convert.ToInt32(SmfFileHandle[ntrack].Get24Bit(position + 3));
DELTA_Returned = GetMetaNextPos(position);
break;
case (int)MetaMsgU16FF.TimeSignature:
TimeSignature.SetSignature(
(int)this[ntrack, position + 3],
(int)Math.Pow(-this[ntrack, position + 4], 2),
(int)this[ntrack, position + 5],
(int)this[ntrack, position + 6]
);
DELTA_Returned = GetMetaNextPos(position);
break;
case (int)MetaMsgU16FF.KeySignature:
byte b = (this[ntrack, position + 3]);
KeySignature.SetSignature((KeySignatureType)b, this[ntrack, position + 4] == 0);
DELTA_Returned = GetMetaNextPos(position);
break;
case (int)MetaMsgU16FF.SystemSpecific:
case (int)MetaMsgU16FF.SystemExclusive:
DELTA_Returned = GetMetaNextPos(position);
break;
default:
{
if (CurrentByte < 0x80)
{
// Running Status
int ExpandedRSE = RunningStatus32 << 8;
int delta1 = -1;
if ((delta1 = GetNextRsePosition(position)) == -1)
{
int test = GetOffset(position);
Debug.Assert(false, string.Format("warning… {0:X2}, {1:X}|{1:N0}", ExpandedRSE, test));
}
else
{
DELTA_Returned = delta1;
}
}
else if (MidiMessageInfo.IsMidiMessage(CurrentIntMessage))
{
RunningStatus32 = (SmfFileHandle[ntrack, position]);
DELTA_Returned = GetNextPosition(position);
DELTA_Returned++;
return(DELTA_Returned);
}
else
{
throw new FormatException("Bad format!\nThere is probably a problem with the Input File unless we made an error reading it!)");
}
}
break;
}
DELTA_Returned++;
return(DELTA_Returned);
}
/// MESSAGE PARSER
/// get track (specific) message
public virtual int GetNTrackMessage(int ntrack, int position, int delta)
{
int DELTA_Returned = delta;
byte CurrentByte = SmfFileHandle.Get8Bit(ntrack, position);
int CurrentIntMessage = SmfFileHandle.Get16BitInt32(ntrack, position);
switch (CurrentIntMessage)
{
case (int)MetaMsgU16FF.Text:
// FF01
case (int)MetaMsgU16FF.Copyright:
// FF02
case (int)MetaMsgU16FF.SequenceName:
// FF03
case (int)MetaMsgU16FF.InstrumentName:
// FF04
case (int)MetaMsgU16FF.Lyric:
// FF05
case (int)MetaMsgU16FF.Marker:
// FF06
case (int)MetaMsgU16FF.Cue:
// FF07
case (int)MetaMsgU16FF.Port:
// FF08
this.MessageHandler(MidiMsgType.MetaStr, ntrack, position, CurrentIntMessage, CurrentByte, TicksPerQuarterNote, RunningStatus32, false);
//lve.AddItem( c4, MeasureBarTick( TicksPerQuarterNote ), TicksPerQuarterNote.ToString(), ""/*(RunningStatus32 & 0x0F)+1*/, MetaHelpers.MetaNameFF( CurrentIntMessage ) , GetMetaString( position ) );
DELTA_Returned = GetMetaNextPos(position);
break;
case (int)MetaMsgU16FF.SequenceNo:
// FF00
case (int)MetaMsgU16FF.Chanel:
// FF20
case (int)MetaMsgU16FF.EndOfTrack:
// FF2F
case (int)MetaMsgU16FF.Tempo:
// FF51
case (int)MetaMsgU16FF.SMPTE:
// FF54
case (int)MetaMsgU16FF.TimeSignature:
// FF58
case (int)MetaMsgU16FF.KeySignature:
// FF59
// why is this filtered and no others ? see gettrackmessage
this.MessageHandler(MidiMsgType.MetaInf, ntrack, position, CurrentIntMessage, CurrentByte, TicksPerQuarterNote, RunningStatus32, false);
DELTA_Returned = GetMetaNextPos(position);
break;
case (int)MetaMsgU16FF.SystemSpecific:
// FF7F
case (int)MetaMsgU16FF.SystemExclusive:
// FF7F
Debug.Print("?---------sys");
this.MessageHandler(MidiMsgType.System, ntrack, position, CurrentIntMessage, CurrentByte, TicksPerQuarterNote, RunningStatus32, false);
DELTA_Returned = GetMetaNextPos(position);
break;
default:
{
if (CurrentByte < 0x80)
{
// Running Status
int ExpandedRSE = RunningStatus32 << 8;
int delta1 = -1;
if ((delta1 = GetNextRsePosition(position)) == -1)
{
int test = GetOffset(position);
Debug.Assert(false, string.Format("warning… {0:X2}, {1:X}|{1:N0}", ExpandedRSE, test));
}
else
{
DELTA_Returned = delta1;
this.MessageHandler(GetMsgTyp(RunningStatus32), ntrack, position, RunningStatus32, (byte)RunningStatus32, TicksPerQuarterNote, RunningStatus32, true);
}
}
else if (MidiMessageInfo.IsMidiMessage(CurrentIntMessage))
{
RunningStatus32 = (SmfFileHandle[ntrack, position]);
DELTA_Returned = GetNextPosition(position);
// Debug.Print("{0:X}",runningStatus32);
this.MessageHandler(GetMsgTyp(RunningStatus32), ntrack, position, RunningStatus32, (byte)RunningStatus32, TicksPerQuarterNote, RunningStatus32, false);
DELTA_Returned++;
return(DELTA_Returned);
}
else
{
throw new FormatException("Bad format!\nThere is probably a problem with the Input File unless we made an error reading it!)");
}
}
break;
}
DELTA_Returned++;
// what is roy[1] if not the current track position?
return(DELTA_Returned);
}
//
// META STRING
// ---------------
#region Meta STRING Helpers
/// <summary>
/// Return a string value per meta-event or throw exception.
/// </summary>
/// <param name="trk"></param>
/// <param name="pos"></param>
/// <returns></returns>
public string GetMetaSTR(int offset)
{
int flag = SmfFileHandle.Get16BitInt32(SelectedTrackNumber, offset);
switch ((MetaMsgU16FF)flag)
{
//0xff00
case MetaMsgU16FF.SequenceNo:
return(MetaHelpers.meta_FF00(
SmfFileHandle[SelectedTrackNumber, offset + 3],
SmfFileHandle[SelectedTrackNumber, offset + 4]
));
//0xff20
case MetaMsgU16FF.Chanel:
/*SmfStringFormatter.meta_FF20( trk, pos+3 )*/
return(SmfFileHandle[SelectedTrackNumber, offset + 3].ToString());
//0xff51
case MetaMsgU16FF.Tempo:
return(MetaHelpers.meta_FF51(Convert.ToInt32(SmfFileHandle[SelectedTrackNumber].Get24Bit(offset + 3))));
//0xff54:
case MetaMsgU16FF.SMPTE:
return(MetaHelpers.meta_FF54());
// "?"
//0xff58:
case MetaMsgU16FF.TimeSignature:
return(MetaHelpers.meta_FF58(SmfFileHandle[SelectedTrackNumber], offset));
//0xff59:
case MetaMsgU16FF.KeySignature:
return(MetaHelpers.meta_FF59(SmfFileHandle[SelectedTrackNumber], offset));
//0xff2f
case MetaMsgU16FF.EndOfTrack:
return(MetaHelpers.meta_FF2F());
//0xff7f
case MetaMsgU16FF.SystemSpecific: // actually 'Sequencer-Specific Meta-Event'
//Sequencer Specific
long result = 0;
int nextOffset = GetIntVar(offset + 2, out result) - offset;
return(SmfFileHandle[SelectedTrackNumber, offset, Convert.ToInt32(result) + 3].StringifyHex());
case MetaMsgU16FF.SystemExclusive:
//System Exclusive
long result1 = 0;
int nextOffset1 = GetIntVar(offset + 1, out result1) - offset;
return(SmfFileHandle[SelectedTrackNumber, offset, Convert.ToInt32(result1) + 4].StringifyHex());
default:
// check for a channel message
if (runningStatus32 == 0xF0)
{
long ro = 0;
int no = GetIntVar(offset + 1, out ro) - offset;
return(SmfFileHandle[SelectedTrackNumber, offset, Convert.ToInt32(ro) + 2].StringifyHex());
}
string msg = string.Format(
"We're not sure how to handle this message {0:X4} {1:X2}. Treating data as META event.",
RunningStatus32,
SmfFileHandle[SelectedTrackNumber, offset, 2].StringifyHex()
);
MessageBox.Show(msg, "Press OK to continue", MessageBoxButtons.OK);
return(System.Text.Encoding.UTF8.GetString(SmfFileHandle[SelectedTrackNumber, offset, SmfFileHandle[SelectedTrackNumber, offset + 2] + 3]));
}
}
