/// <summary>
/// Reads an event from the reader's underlying stream.
/// </summary>
/// <param name="reader">Reader to read an event.</param>
/// <param name="settings">Settings according to which an event must be read.</param>
/// <param name="channelEventStatusByte">Current channel event status byte used as running status.</param>
/// <returns>Instance of the <see cref="MidiEvent"/> representing a MIDI event.</returns>
/// <exception cref="ObjectDisposedException">Method was called after the writer's underlying stream
/// was disposed.</exception>
/// <exception cref="IOException">An I/O error occurred on the writer's underlying stream.</exception>
/// <exception cref="UnexpectedRunningStatusException">Unexpected running status is encountered.</exception>
/// <exception cref="UnknownChannelEventException">Reader has encountered an unknown channel event.</exception>
/// <exception cref="NotEnoughBytesException">Not enough bytes to read an event.</exception>
/// <exception cref="InvalidChannelEventParameterValueException">Value of a channel event's parameter just
/// read is invalid.</exception>
private MidiEvent ReadEvent(MidiReader reader, ReadingSettings settings, ref byte?channelEventStatusByte)
{
var deltaTime = reader.ReadVlqLongNumber();
if (deltaTime < 0)
{
deltaTime = 0;
}
//
var statusByte = reader.ReadByte();
if (statusByte <= SevenBitNumber.MaxValue)
{
if (channelEventStatusByte == null)
{
throw new UnexpectedRunningStatusException();
}
statusByte = channelEventStatusByte.Value;
reader.Position--;
}
//
var eventReader = EventReaderFactory.GetReader(statusByte);
var midiEvent = eventReader.Read(reader, settings, statusByte);
//
if (settings.SilentNoteOnPolicy == SilentNoteOnPolicy.NoteOff)
{
var noteOnEvent = midiEvent as NoteOnEvent;
if (noteOnEvent?.Velocity == 0)
{
midiEvent = new NoteOffEvent
{
DeltaTime = noteOnEvent.DeltaTime,
Channel = noteOnEvent.Channel,
NoteNumber = noteOnEvent.NoteNumber
};
}
}
//
if (midiEvent is ChannelEvent)
{
channelEventStatusByte = statusByte;
}
//
midiEvent.DeltaTime = deltaTime;
return(midiEvent);
}
// Token: 0x06003233 RID: 12851 RVA: 0x00146EB4 File Offset: 0x001450B4
private MidiEvent ReadEvent(MidiReader reader, ReadingSettings settings, ref byte?channelEventStatusByte)
{
long num = reader.ReadVlqLongNumber();
if (num < 0L)
{
num = 0L;
}
this.absTime += num;
byte b = reader.ReadByte();
if (b <= SevenBitNumber.MaxValue)
{
if (channelEventStatusByte == null)
{
throw new UnexpectedRunningStatusException();
}
b = channelEventStatusByte.Value;
long position = reader.Position;
reader.Position = position - 1L;
}
MidiEvent midiEvent = EventReaderFactory.GetReader(b).Read(reader, settings, b);
if (settings.SilentNoteOnPolicy == SilentNoteOnPolicy.NoteOff)
{
NoteOnEvent noteOnEvent = midiEvent as NoteOnEvent;
SevenBitNumber?sevenBitNumber = (noteOnEvent != null) ? new SevenBitNumber?(noteOnEvent.Velocity) : null;
int? num2 = (sevenBitNumber != null) ? new int?((int)sevenBitNumber.GetValueOrDefault()) : null;
if (num2.GetValueOrDefault() == 0 & num2 != null)
{
midiEvent = new NoteOffEvent
{
DeltaTime = noteOnEvent.DeltaTime,
Channel = noteOnEvent.Channel,
NoteNumber = noteOnEvent.NoteNumber
};
}
}
if (midiEvent is ChannelEvent)
{
channelEventStatusByte = new byte?(b);
}
midiEvent.DeltaTime = num;
midiEvent.AbsoluteTime = this.absTime;
if (midiEvent is NoteOnEvent)
{
this.onEvents.Add(this.Events.Count);
}
else if (midiEvent is NoteOffEvent)
{
for (int i = 0; i < this.onEvents.Count; i++)
{
NoteOnEvent noteOnEvent2 = this.Events[this.onEvents[i]] as NoteOnEvent;
if (noteOnEvent2.Channel == ((NoteOffEvent)midiEvent).Channel && noteOnEvent2.NoteNumber == ((NoteOffEvent)midiEvent).NoteNumber)
{
((NoteOnEvent)this.Events[this.onEvents[i]]).OffEvent = (NoteOffEvent)midiEvent;
this.onEvents.RemoveAt(i);
return(null);
}
}
}
return(midiEvent);
}
