public static MetaEvent ReadMetaEvent(BinaryReader br) { MetaEventType metaEventType = (MetaEventType)br.ReadByte(); int num = MidiEvent.ReadVarInt(br); MetaEvent metaEvent = new MetaEvent(); if (metaEventType <= MetaEventType.SetTempo) { switch (metaEventType) { case MetaEventType.TrackSequenceNumber: metaEvent = new TrackSequenceNumberEvent(br, num); goto IL_E7; case MetaEventType.TextEvent: case MetaEventType.Copyright: case MetaEventType.SequenceTrackName: case MetaEventType.TrackInstrumentName: case MetaEventType.Lyric: case MetaEventType.Marker: case MetaEventType.CuePoint: case MetaEventType.ProgramName: case MetaEventType.DeviceName: metaEvent = new TextEvent(br, num); goto IL_E7; default: if (metaEventType != MetaEventType.EndTrack) { if (metaEventType == MetaEventType.SetTempo) { metaEvent = new TempoEvent(br, num); goto IL_E7; } } else { if (num != 0) { throw new FormatException("End track length"); } goto IL_E7; } break; } } else if (metaEventType <= MetaEventType.TimeSignature) { if (metaEventType == MetaEventType.SmpteOffset) { metaEvent = new SmpteOffsetEvent(br, num); goto IL_E7; } if (metaEventType == MetaEventType.TimeSignature) { metaEvent = new TimeSignatureEvent(br, num); goto IL_E7; } } else { if (metaEventType == MetaEventType.KeySignature) { metaEvent = new KeySignatureEvent(br, num); goto IL_E7; } if (metaEventType == MetaEventType.SequencerSpecific) { metaEvent = new SequencerSpecificEvent(br, num); goto IL_E7; } } byte[] array = br.ReadBytes(num); if (array.Length != num) { throw new FormatException("Failed to read metaevent's data fully"); } return(new RawMetaEvent(metaEventType, 0L, array)); IL_E7: metaEvent.metaEvent = metaEventType; metaEvent.metaDataLength = num; return(metaEvent); }
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; Stream expr_2D = br.BaseStream; long position = expr_2D.Position; expr_2D.Position = position - 1L; } else if ((b & 240) == 240) { midiCommandCode = (MidiCommandCode)b; } else { midiCommandCode = (MidiCommandCode)(b & 240); num2 = (int)((b & 15) + 1); } MidiEvent midiEvent; if (midiCommandCode <= MidiCommandCode.ControlChange) { if (midiCommandCode <= MidiCommandCode.NoteOn) { if (midiCommandCode != MidiCommandCode.NoteOff) { if (midiCommandCode != MidiCommandCode.NoteOn) { goto IL_154; } midiEvent = new NoteOnEvent(br); goto IL_16A; } } else if (midiCommandCode != MidiCommandCode.KeyAfterTouch) { if (midiCommandCode != MidiCommandCode.ControlChange) { goto IL_154; } midiEvent = new ControlChangeEvent(br); goto IL_16A; } midiEvent = new NoteEvent(br); goto IL_16A; } if (midiCommandCode <= MidiCommandCode.ChannelAfterTouch) { if (midiCommandCode == MidiCommandCode.PatchChange) { midiEvent = new PatchChangeEvent(br); goto IL_16A; } if (midiCommandCode == MidiCommandCode.ChannelAfterTouch) { midiEvent = new ChannelAfterTouchEvent(br); goto IL_16A; } } else { if (midiCommandCode == MidiCommandCode.PitchWheelChange) { midiEvent = new PitchWheelChangeEvent(br); goto IL_16A; } if (midiCommandCode == MidiCommandCode.Sysex) { midiEvent = SysexEvent.ReadSysexEvent(br); goto IL_16A; } switch (midiCommandCode) { case MidiCommandCode.TimingClock: case MidiCommandCode.StartSequence: case MidiCommandCode.ContinueSequence: case MidiCommandCode.StopSequence: midiEvent = new MidiEvent(); goto IL_16A; case MidiCommandCode.MetaEvent: midiEvent = MetaEvent.ReadMetaEvent(br); goto IL_16A; } } IL_154: throw new FormatException(string.Format("Unsupported MIDI Command Code {0:X2}", (byte)midiCommandCode)); IL_16A: midiEvent.channel = num2; midiEvent.deltaTime = num; midiEvent.commandCode = midiCommandCode; return(midiEvent); }