string GetDebugInfo(int nTrackIndex, int nTrackOffset, int delta)
{
ushort msg16 = FileHandle.Get16Bit(nTrackIndex, nTrackOffset);
byte msg8 = (byte)(msg16 & 0xFF);
// we want to skip a two-byte header?
byte msg8Plus1 = FileHandle.Get8Bit(nTrackIndex, nTrackOffset + 2);
CurrentStatus = msg16;
return($"{{ Track Index: {nTrackIndex}, Track Offset: {nTrackOffset}, delta: {delta} }}\n" +
$"{{ 16 Bit Message: {msg16:X4}, 8 Bit Message: {msg8:X2}, next 8 Bit Message: {msg8Plus1:X2};");
}
/// <inheritdoc/>
public string GetMessageString(int pTrackIndex, int pTrackOffset)
{
var msg32 = FileHandle.Get16Bit(pTrackIndex, pTrackOffset);
switch ((StatusWord)msg32)
{
case StatusWord.SequenceNumber: /* 0xFF00 */ return(MetaHelpers.meta_FF00(FileHandle[pTrackIndex, pTrackOffset + 3], FileHandle[pTrackIndex, pTrackOffset + 4]));
case StatusWord.ChannelPrefix: /* 0xFF20 */
case StatusWord.PortMessage: /* 0xFF21 */ return(FileHandle[pTrackIndex, pTrackOffset + 3].ToString());
case StatusWord.SetTempo: /* 0xFF51 */ return(MetaHelpers.meta_FF51(Convert.ToInt32(FileHandle[pTrackIndex].ReadU24(pTrackOffset + 3))));
case StatusWord.SMPTEOffset: /* 0xFF54 */ return(MetaHelpers.meta_FF54(this, pTrackOffset));
case StatusWord.TimeSignature: /* 0xFF58 */ return(MetaHelpers.meta_FF58(FileHandle[pTrackIndex], pTrackOffset));
case StatusWord.KeySignature: /* 0xFF59 */ return(MetaHelpers.PrintKeysignature(FileHandle[pTrackIndex], pTrackOffset));
case StatusWord.EndOfTrack: /* 0xFF2F */ return(MetaHelpers.meta_FF2F());
case StatusWord.SequencerSpecific_FF70: /* 0xFF70 */ return(GetMetadataBytes(pTrackIndex, pTrackOffset).StringifyHex());
case StatusWord.SequencerSpecific_FF71: /* 0xFF71 */ return(GetMetadataBytes(pTrackIndex, pTrackOffset).StringifyHex());
case StatusWord.SequencerSpecific_FF72: /* 0xFF72 */ return(GetMetadataBytes(pTrackIndex, pTrackOffset).StringifyHex());
case StatusWord.SequencerSpecific_FF73: /* 0xFF73 */ return(GetMetadataBytes(pTrackIndex, pTrackOffset).StringifyHex());
case StatusWord.SequencerSpecific_FF74: /* 0xFF74 */ return(GetMetadataBytes(pTrackIndex, pTrackOffset).StringifyHex());
case StatusWord.SequencerSpecific_FF75: /* 0xFF75 */ return(GetMetadataBytes(pTrackIndex, pTrackOffset).StringifyHex());
case StatusWord.SequencerSpecific_FF76: /* 0xFF76 */ return(GetMetadataBytes(pTrackIndex, pTrackOffset).StringifyHex());
case StatusWord.SequencerSpecific_FF77: /* 0xFF77 */ return(GetMetadataBytes(pTrackIndex, pTrackOffset).StringifyHex());
case StatusWord.SequencerSpecific_FF78: /* 0xFF78 */ return(GetMetadataBytes(pTrackIndex, pTrackOffset).StringifyHex());
case StatusWord.SequencerSpecific_FF79: /* 0xFF79 */ return(GetMetadataBytes(pTrackIndex, pTrackOffset).StringifyHex());
case StatusWord.SequencerSpecific_FF7A: /* 0xFF7A */ return(GetMetadataBytes(pTrackIndex, pTrackOffset).StringifyHex());
case StatusWord.SequencerSpecific_FF7B: /* 0xFF7B */ return(GetMetadataBytes(pTrackIndex, pTrackOffset).StringifyHex());
case StatusWord.SequencerSpecific_FF7C: /* 0xFF7C */ return(GetMetadataBytes(pTrackIndex, pTrackOffset).StringifyHex());
case StatusWord.SequencerSpecific_FF7D: /* 0xFF7D */ return(GetMetadataBytes(pTrackIndex, pTrackOffset).StringifyHex());
case StatusWord.SequencerSpecific_FF7E: /* 0xFF7E */ return(GetMetadataBytes(pTrackIndex, pTrackOffset).StringifyHex());
case StatusWord.SequencerSpecific: /* 0xFF7F */ return(GetMetadataBytes(pTrackIndex, pTrackOffset).StringifyHex());
case StatusWord.SystemExclusive: /* 0xF0 */
int nlength = FileHandle[pTrackIndex].GetEndOfSystemExclusive(pTrackOffset) - pTrackOffset;
int noffset = pTrackOffset;
string nresult = FileHandle[pTrackIndex, pTrackOffset, nlength].StringifyHex();
return(nresult);
default: // check for a channel message
if (CurrentRunningStatus8 == 0xF0)
{
long ro = 0;
int no = FileHandle.ReadDelta(pTrackIndex, pTrackOffset + 1, out ro) - pTrackOffset;
return(FileHandle[pTrackIndex, pTrackOffset, Convert.ToInt32(ro) + 2].StringifyHex());
}
// string msg = string.Format(StringRes.String_Unknown_Message, CurrentRunningStatus8, FileHandle[pTrackIndex, pTrackOffset, 2].StringifyHex());
return(Strings.Encoding.GetString(FileHandle[pTrackIndex, pTrackOffset, FileHandle[pTrackIndex, pTrackOffset + 2] + 3]));
}
}
/// <summary>
/// In MIDI Format 1, this would be the first track (index = 0).
/// Otherwise Format 0: index = 0 and with
/// Format 2, each track will essentially be like a Format 0 track.
///
/// This method collects information from the 'tempo map' track such as
///
/// - Tempo Information
/// - SMPTE Offset
/// - Time Signature
/// - Key Signatuer
/// - Sequencer Specific Data
/// - System Exclusive Data (in tempo map)
/// </summary>
int GetTempoMap(int nTrackIndex, int nTrackOffset, int delta)
{
int DELTA_Returned = delta;
var msg16 = FileHandle.Get16Bit(nTrackIndex, nTrackOffset);
byte msg8 = (byte)(msg16 & 0xFF);
CurrentStatus = msg16; // This is just an attempt at aligning running status.
// var hexMsg = $"{msg16:X2}";
if (msg16 >= 0xFF00 && msg16 <= 0xFF0C)
{
DELTA_Returned = FileHandle.Tracks[nTrackIndex].DeltaSeek(nTrackOffset);
return(++DELTA_Returned);
}
switch (msg16)
{
// text
case Stat16.SequenceNumber: // 0xFF00
case Stat16.ChannelPrefix: // 0xFF20
case Stat16.PortMessage: /* 0xFF21 */ DELTA_Returned = FileHandle.Tracks[nTrackIndex].DeltaSeek(nTrackOffset); break;
case Stat16.EndOfTrack: /* 0xFF2F */ DELTA_Returned = FileHandle.Tracks[nTrackIndex].Data.Length - 1; break;
case Stat16.SetTempo: // 0xFF51
var muspqn = FileHandle[ReaderIndex].ReadU24(nTrackOffset + 3);
TempoMap.Push(muspqn, Division, CurrentTrackPulse);
DELTA_Returned = FileHandle.Tracks[nTrackIndex].DeltaSeek(nTrackOffset);
break;
case Stat16.SMPTEOffset: // 0xFF54
SMPTE.SetSMPTE(
FileHandle.Tracks[nTrackIndex].Data[nTrackOffset + 3],
FileHandle.Tracks[nTrackIndex].Data[nTrackOffset + 4],
FileHandle.Tracks[nTrackIndex].Data[nTrackOffset + 5],
FileHandle.Tracks[nTrackIndex].Data[nTrackOffset + 6],
FileHandle.Tracks[nTrackIndex].Data[nTrackOffset + 7]
);
DELTA_Returned = FileHandle.Tracks[nTrackIndex].DeltaSeek(nTrackOffset);
break;
case Stat16.TimeSignature: // 0xFF58
TimeSignature.SetSignature(
(int)this[nTrackIndex, nTrackOffset + 3],
(int)Math.Pow(-this[nTrackIndex, nTrackOffset + 4], 2),
(int)this[nTrackIndex, nTrackOffset + 5],
(int)this[nTrackIndex, nTrackOffset + 6]
);
DELTA_Returned = FileHandle.Tracks[nTrackIndex].DeltaSeek(nTrackOffset);
break;
case Stat16.KeySignature: // 0xFF59
KeySignature.SetSignature(
this[nTrackIndex, nTrackOffset + 3],
this[nTrackIndex, nTrackOffset + 4]);
DELTA_Returned = FileHandle.Tracks[nTrackIndex].DeltaSeek(nTrackOffset);
break;
case Stat16.SequencerSpecific_70: // 0xFF70
case Stat16.SequencerSpecific_71: // 0xFF71
case Stat16.SequencerSpecific_72: // 0xFF72
case Stat16.SequencerSpecific_73: // 0xFF73
case Stat16.SequencerSpecific_74: // 0xFF74
case Stat16.SequencerSpecific_75: // 0xFF75
case Stat16.SequencerSpecific_76: // 0xFF76
case Stat16.SequencerSpecific_77: // 0xFF77
case Stat16.SequencerSpecific_78: // 0xFF78
case Stat16.SequencerSpecific_79: // 0xFF79
case Stat16.SequencerSpecific_7A: // 0xFF7A
case Stat16.SequencerSpecific_7B: // 0xFF7B
case Stat16.SequencerSpecific_7C: // 0xFF7C
case Stat16.SequencerSpecific_7D: // 0xFF7D
case Stat16.SequencerSpecific_7E: // 0xFF7E
case Stat16.SequencerSpecific: // 0xFF7F
DELTA_Returned = FileHandle.Tracks[nTrackIndex].DeltaSeek(nTrackOffset);
break;
case Stat16.SystemExclusive:
var pLastIndex = FileHandle[nTrackIndex].GetEndOfSystemExclusive(nTrackOffset);
DELTA_Returned = pLastIndex;
break;
default:
{
if (FileHandle.Tracks[nTrackIndex].Data[nTrackOffset] < 0x80)
{
CurrentStatus = CurrentRunningStatus16;
// Running Status
// int ExpandedRSE = CurrentTrackRunningStatus;// << 8;
int ExpandedRSE = CurrentRunningStatus8;// << 8;
int delta1 = -1;
if ((delta1 = Increment(nTrackOffset)) == -1)
{
int test = GetOffset(nTrackIndex, nTrackOffset);
Debug.Assert(false, string.Format("warning… {0:X2}, {1:X}|{1:N0}", ExpandedRSE, test));
}
else
{
DELTA_Returned = delta1;
}
}
else if (StatusQuery.IsMidiMessage(msg8))
{
CurrentRunningStatus8 = msg8;
CurrentRunningStatus16 = msg16;
DELTA_Returned = Increment(nTrackOffset + 1);
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;
}
return(++DELTA_Returned);
}
/// <summary>
/// provides **default parser semantic** in that from here we delegate
/// each message to <see cref="MessageHandler"/>.
/// `MessageHandler` can be set via the constructor, or explicitly after
/// initializing (creating/.ctor) `Reader`.
///
/// Additionally, <see cref="OnMidiMessage(MidiMsgType, int, int, int, byte, long, int, bool)"/>
/// exists and can be set as the default message-handler in which case any assigned
/// event handler(s) (`ProcessMidiMessage`) or delegates (`MessageHandler`)
/// can and will be used.
/// </summary>
public virtual int GetNTrackMessage(int nTrackIndex, int nTrackOffset, int delta)
{
int DELTA_Returned = delta;
ushort msg16 = FileHandle.Get16Bit(nTrackIndex, nTrackOffset);
byte msg8 = (byte)(msg16 & 0xFF);
CurrentStatus = msg16;
// var hexMsg = $"{msg16:X2}";
if (msg16 >= 0xFF00 && msg16 <= 0xFF0C)
{
MessageHandler(MidiMsgType.MetaStr, nTrackIndex, nTrackOffset, msg16, msg8, CurrentTrackPulse, CurrentRunningStatus8, false);
DELTA_Returned = FileHandle.Tracks[nTrackIndex].DeltaSeek(nTrackOffset);
return(++DELTA_Returned);
}
switch (msg16)
{
case Stat16.EndOfTrack: // FF2F
MessageHandler(MidiMsgType.EOT, nTrackIndex, nTrackOffset, msg16, msg8, CurrentTrackPulse, CurrentRunningStatus8, false);
DELTA_Returned = FileHandle.Tracks[nTrackIndex].Data.Length;
break;
case Stat16.SequenceNumber: // 0xFF00
case Stat16.ChannelPrefix: // FF20
case Stat16.PortMessage: // FF21?
case Stat16.SetTempo: // FF51
MessageHandler(MidiMsgType.MetaInf, nTrackIndex, nTrackOffset, msg16, msg8, CurrentTrackPulse, CurrentRunningStatus8, false);
DELTA_Returned = FileHandle.Tracks[nTrackIndex].DeltaSeek(nTrackOffset);
break;
case Stat16.SMPTEOffset: // FF54
MessageHandler(MidiMsgType.MetaInf, nTrackIndex, nTrackOffset, msg16, msg8, CurrentTrackPulse, CurrentRunningStatus8, false);
DELTA_Returned = FileHandle.Tracks[nTrackIndex].DeltaSeek(nTrackOffset);
break;
case Stat16.TimeSignature: // FF58
case Stat16.KeySignature: // FF59
MessageHandler(MidiMsgType.MetaInf, nTrackIndex, nTrackOffset, msg16, msg8, CurrentTrackPulse, CurrentRunningStatus8, false);
DELTA_Returned = FileHandle.Tracks[nTrackIndex].DeltaSeek(nTrackOffset);
break;
case Stat16.SequencerSpecific_70: // 0xFF70
case Stat16.SequencerSpecific_71: // 0xFF71
case Stat16.SequencerSpecific_72: // 0xFF72
case Stat16.SequencerSpecific_73: // 0xFF73
case Stat16.SequencerSpecific_74: // 0xFF74
case Stat16.SequencerSpecific_75: // 0xFF75
case Stat16.SequencerSpecific_76: // 0xFF76
case Stat16.SequencerSpecific_77: // 0xFF77
case Stat16.SequencerSpecific_78: // 0xFF78
case Stat16.SequencerSpecific_79: // 0xFF79
case Stat16.SequencerSpecific_7A: // 0xFF7A
case Stat16.SequencerSpecific_7B: // 0xFF7B
case Stat16.SequencerSpecific_7C: // 0xFF7C
case Stat16.SequencerSpecific_7D: // 0xFF7D
case Stat16.SequencerSpecific_7E: // 0xFF7E
// we have FF70LLNN where LL is a byte length (assumed: variable bit) and NN is the data we're being provided.
// MPC Pro software generates it.
// Theoretically, this could probably happen for other FF70-FF7E?
MessageHandler(MidiMsgType.SequencerSpecificUnknown, nTrackIndex, nTrackOffset, msg16, msg8, CurrentTrackPulse, CurrentRunningStatus8, false);
DELTA_Returned = FileHandle.Tracks[nTrackIndex].DeltaSeek(nTrackOffset);
break;
case Stat16.SequencerSpecific: // FF7F
MessageHandler(MidiMsgType.SequencerSpecific, nTrackIndex, nTrackOffset, msg16, msg8, CurrentTrackPulse, CurrentRunningStatus8, false);
DELTA_Returned = FileHandle.Tracks[nTrackIndex].DeltaSeek(nTrackOffset);
break;
case Stat16.SystemExclusive: // 0xF0
MessageHandler(MidiMsgType.SystemExclusive, nTrackIndex, nTrackOffset, msg16, msg8, CurrentTrackPulse, CurrentRunningStatus8, false);
DELTA_Returned = FileHandle[nTrackIndex].GetEndOfSystemExclusive(nTrackOffset);
break;
default:
{
if (FileHandle.Tracks[nTrackIndex].Data[nTrackOffset] < 0x80) // running-status message
{
// Running Status
CurrentStatus = CurrentRunningStatus16;
int ExpandedRSE = CurrentRunningStatus8;// << 8;
int delta1 = -1;
if ((delta1 = Increment(nTrackOffset)) == -1)
{
int test = GetOffset(nTrackIndex, nTrackOffset);
Debug.Assert(false, string.Format("warning… {0:X2}, {1:X}|{1:N0}", ExpandedRSE, test));
}
else
{
DELTA_Returned = delta1;
MessageHandler(GetMidiMessageType(CurrentRunningStatus8), nTrackIndex, nTrackOffset, CurrentRunningStatus16, (byte)CurrentRunningStatus8, CurrentTrackPulse, CurrentRunningStatus8, true);
}
}
//else if (StatusQuery.IsMidiMessage(msg32))
else if (StatusQuery.IsMidiMessage(msg8))
{
//CurrentTrackRunningStatus = (FileHandle[nTrackIndex, nTrackOffset]);
CurrentRunningStatus8 = msg8;
CurrentRunningStatus16 = msg16;
DELTA_Returned = Increment(nTrackOffset + 1);
MessageHandler(GetMidiMessageType(CurrentRunningStatus8), nTrackIndex, nTrackOffset, msg16, msg8, CurrentTrackPulse, CurrentRunningStatus8, false);
DELTA_Returned++;
return(DELTA_Returned);
}
else
{
throw new FormatException(
$"Bad format(?)!\n" +
$"There is probably a problem with the Input File (unless we made an error reading it)!\n" +
$"Here is some debug info: {GetDebugInfo(nTrackIndex, nTrackOffset, delta)}");
}
}
break;
}
return(++DELTA_Returned);
}