public MidiTime(MidiTime copyMe)
{
this.File = copyMe.File;
this.TimeSignature = copyMe.TimeSignature;
this.Measures = copyMe.Measures;
this.Beats = copyMe.Beats;
this.Ticks = copyMe.Ticks;
this.Region = copyMe.Region;
}
public uint GetAsTotalTicks(uint pulsesPerQuarterNote, TimeSignatureEvent timeSig)
{
uint ticks = 0;
uint convertedPulsesPerQuarterNote = (uint)(pulsesPerQuarterNote / (timeSig.Denominator / 4));
ticks += ((this.Measures - 1) * convertedPulsesPerQuarterNote * timeSig.Numerator);
ticks += ((this.Beats - 1) * convertedPulsesPerQuarterNote);
ticks += this.Ticks;
return(ticks);
}
/// <summary>
/// the position of the region boundaries are calculated on the fly by using the current time
/// signature and pulses per QN
/// </summary>
/// <param name="position"></param>
/// <param name="pulsesPerQuarterNote"></param>
/// <param name="timeSig"></param>
/// <returns></returns>
public Region GetRegion(MidiTime position, uint pulsesPerQuarterNote, TimeSignatureEvent timeSig)
{
uint posTicks = position.GetAsTotalTicks(pulsesPerQuarterNote, timeSig);
foreach (Region r in this.Regions)
{
if (posTicks >= r.Start.GetAsTotalTicks(pulsesPerQuarterNote, timeSig) &&
posTicks < r.End.GetAsTotalTicks(pulsesPerQuarterNote, timeSig))
{
return(r);
}
}
return(null);
}
public MidiTime(MidiFile midiFile, uint totalTicks, TimeSignatureEvent timeSig)
{
this.File = midiFile;
this.TimeSignature = timeSig;
uint convertedPulsesPerQuarterNote = (uint)(this.File.Header.PulsesPerQuarterNote / (this.TimeSignature.Denominator / 4));
this.Measures = ((totalTicks / convertedPulsesPerQuarterNote) / this.TimeSignature.Numerator); //number of beats in a measure
this.Beats = (totalTicks / convertedPulsesPerQuarterNote) % this.TimeSignature.Numerator; //number of notes in a beat
this.Ticks = (totalTicks % convertedPulsesPerQuarterNote);
this.Measures++;
this.Beats++;
this.Region = this.File.GetRegion(this, this.File.Header.PulsesPerQuarterNote, this.TimeSignature);
}
public MidiTime(MidiFile midiFile, String measuresBeatsTicksString, TimeSignatureEvent timeSig)
{
this.File = midiFile;
this.TimeSignature = timeSig;
char[] splitChars = { '.' };
String[] parts = measuresBeatsTicksString.Split(splitChars);
this.Measures = uint.Parse(parts[0]);
if (this.Measures < 1)
{
throw new ApplicationException("measures must be 1 or above");
}
this.Beats = uint.Parse(parts[1]);
this.Ticks = uint.Parse(parts[2]);
//this.Region = this.File.GetRegion(this, this.File.Header.PulsesPerQuarterNote, this.TimeSignature);
}
public MidiTime(MidiFile midiFile, uint measures, uint beats, uint ticks, TimeSignatureEvent timeSig)
{
this.File = midiFile;
this.TimeSignature = timeSig;
this.Measures = measures;
if (this.Measures < 1)
{
throw new ApplicationException("measures must be 1 or above");
}
this.Beats = beats;
this.Ticks = ticks;
//uint convertedPulsesPerQuarterNote = (uint)(this.File.Header.PulsesPerQuarterNote / (this.TimeSignature.Denominator / 4));
this.Region = this.File.GetRegion(this, this.File.Header.PulsesPerQuarterNote, this.TimeSignature);
}
public void ConvertFromBinary(System.IO.BinaryReader reader)
{
this.ChunkSize = UtilBinary.ReadUintValue(reader);
ChannelEventType lastChannelEventType = 0;// = ChannelEventType.Unknown;
byte lastChannelEventChannel = 0;
while (true)
{
//Debug.WriteLine(reader.BaseStream.Position);
uint deltaTicks = UtilBinary.ReadVariableLengthValue(reader);
byte trackEventType = UtilBinary.ReadByteValue(reader);
if (trackEventType == (byte)0xFF)
{
//Debug.WriteLine("*****************Meta Event********************");
MetaEventType metaEventType = (MetaEventType)UtilBinary.ReadByteValue(reader);
//Debug.WriteLine(metaEventType);
int lengthOfMetaData = 0;
//meta event
switch (metaEventType)
{
case MetaEventType.SequenceNumber:
UtilBinary.ReadByteValue(reader);
this.SequenceNumber = new SequenceNumberEvent(UtilBinary.ReadByteValue(reader), UtilBinary.ReadByteValue(reader));
break;
case MetaEventType.TextEvent:
lengthOfMetaData = (int)UtilBinary.ReadVariableLengthValue(reader);
this.Comments = new TextEvent(new string(UtilBinary.ReadCharsValue(reader, lengthOfMetaData)));
//Debug.WriteLine(this.Comments.Text);
break;
case MetaEventType.CopyrightNotice:
lengthOfMetaData = (int)UtilBinary.ReadVariableLengthValue(reader);
this.CopyrightNotice = new CopyrightNoticeEvent(new string(UtilBinary.ReadCharsValue(reader, lengthOfMetaData)));
//Debug.WriteLine(this.CopyrightNotice.Text);
break;
case MetaEventType.TrackName:
lengthOfMetaData = (int)UtilBinary.ReadVariableLengthValue(reader);
this.TrackName = new TrackNameEvent(new string(UtilBinary.ReadCharsValue(reader, lengthOfMetaData)));
//Debug.WriteLine(this.TrackName.Text);
break;
case MetaEventType.InstrumentName:
lengthOfMetaData = (int)UtilBinary.ReadVariableLengthValue(reader);
this.InstrumentName = new InstrumentNameEvent(new string(UtilBinary.ReadCharsValue(reader, lengthOfMetaData)));
//Debug.WriteLine(this.InstrumentName.Text);
break;
case MetaEventType.Lyrics:
lengthOfMetaData = (int)UtilBinary.ReadVariableLengthValue(reader);
this.Lyrics = new LyricsEvent(new string(UtilBinary.ReadCharsValue(reader, lengthOfMetaData)));
//Debug.WriteLine(this.Lyrics.Text);
break;
case MetaEventType.Marker:
lengthOfMetaData = (int)UtilBinary.ReadVariableLengthValue(reader);
this.Marker = new MarkerEvent(new string(UtilBinary.ReadCharsValue(reader, lengthOfMetaData)));
//Debug.WriteLine(this.Marker.Text);
break;
case MetaEventType.CuePoint:
lengthOfMetaData = (int)UtilBinary.ReadVariableLengthValue(reader);
this.CuePoint = new CuePointEvent(new string(UtilBinary.ReadCharsValue(reader, lengthOfMetaData)));
//Debug.WriteLine(this.CuePoint.Text);
break;
case MetaEventType.DeviceName:
lengthOfMetaData = (int)UtilBinary.ReadVariableLengthValue(reader);
this.DeviceName = new DeviceNameEvent(new string(UtilBinary.ReadCharsValue(reader, lengthOfMetaData)));
//Debug.WriteLine(this.DeviceName.Text);
break;
case MetaEventType.MidiChannel:
UtilBinary.ReadByteValue(reader);
this.Channel = new MidiChannelEvent(UtilBinary.ReadByteValue(reader));
//Debug.WriteLine(this.Channel.Channel);
break;
case MetaEventType.MidiPort:
UtilBinary.ReadByteValue(reader);
this.Port = new MidiPortEvent(UtilBinary.ReadByteValue(reader));
break;
case MetaEventType.EndOfTrack:
UtilBinary.ReadByteValue(reader);
//this.EndOfTrack = new EndOfTrackEvent();
//this.EndOfTrack.DeltaTicks = deltaTicks;
//Debug.WriteLine(this.EndOfTrack.ToString());
return;
break;
case MetaEventType.Tempo:
UtilBinary.ReadByteValue(reader);
uint microSecondsPerQuarterNote = UtilBinary.Read3ByteInteger(reader);
this.Tempo = new TempoEvent(microSecondsPerQuarterNote, this.TimeSignature.Denominator);
break;
case MetaEventType.SMPTEOffSet:
UtilBinary.ReadByteValue(reader);
this.SMPTEOffSet = new SMPTEOffSetEvent(UtilBinary.ReadByteValue(reader), UtilBinary.ReadByteValue(reader), UtilBinary.ReadByteValue(reader), UtilBinary.ReadByteValue(reader));
break;
case MetaEventType.TimeSignature:
UtilBinary.ReadByteValue(reader);
this.TimeSignature = new TimeSignatureEvent();
this.TimeSignature.Numerator = UtilBinary.ReadByteValue(reader);
this.TimeSignature.Denominator = (byte)Math.Pow(2, UtilBinary.ReadByteValue(reader));
this.TimeSignature.MetronomePulse = UtilBinary.ReadByteValue(reader);
this.TimeSignature.ThirtySecondNotes = UtilBinary.ReadByteValue(reader);
//Debug.WriteLine(this.TimeSignature.ToString());
//this.Tempo = new TempoEvent(this.Tempo.MicroSecondsPerQuarterNote, this.TimeSignature.Denominator);
break;
case MetaEventType.KeySignature:
UtilBinary.ReadByteValue(reader);
this.KeySignature = new KeySignatureEvent(UtilBinary.ReadByteValue(reader), UtilBinary.ReadByteValue(reader));
break;
case MetaEventType.SequencerSpecific:
throw new NotImplementedException();
break;
default:
break;
}
}
else
{
//Debug.WriteLine("---------------------");
//Debug.WriteLine(deltaTime);
//Debug.WriteLine(UtilBinary.ReadByteValue(reader));
//Debug.WriteLine(UtilBinary.ReadByteValue(reader));
//Debug.WriteLine(UtilBinary.ReadByteValue(reader));
ChannelMidiEvent chan = new ChannelMidiEvent();
chan.DeltaTicks = deltaTicks;
chan.File = this.File;
byte[] typeAndChannelBytes = UtilBinary.SplitByte(trackEventType);
byte typeOrData = typeAndChannelBytes[0];
if (Enum.IsDefined(typeof(ChannelEventType), typeOrData))
{
chan.Type = (ChannelEventType)typeOrData;
lastChannelEventType = chan.Type;
chan.Channel = typeAndChannelBytes[1];
lastChannelEventChannel = chan.Channel;
chan.Parameter1 = UtilBinary.ReadByteValue(reader);
chan.Parameter2 = UtilBinary.ReadByteValue(reader);
}
else
{
chan.Type = lastChannelEventType;
chan.Channel = lastChannelEventChannel;
chan.Parameter1 = trackEventType;
chan.Parameter2 = UtilBinary.ReadByteValue(reader);
}
if (chan.Type == ChannelEventType.NoteOn && chan.Parameter2 == 0)
{
chan.Type = ChannelEventType.NoteOff;
}
//Debug.WriteLine(chan.Type.ToString());
//Debug.WriteLine(chan.Channel.ToString());
//this.File.Tracks[(int)chan.Channel].ChannelEvents.Add(chan);
this.ChannelEvents.Add(chan);
//Debug.Write(chan.ToString());
}
}
}
