public byte[] ToBitString()
{
var bitString = new byte[GetLength()];
uint cursor = 0;
foreach (var chunk in Chunks)
{
StreamingHelper.StreamObjectToBitString(ref cursor, ref bitString, chunk, chunk.GetLength());
}
return(bitString);
}
public byte[] ToBitString()
{
byte[] bitString = new byte[GetLength()];
uint cursor = 0;
StreamingHelper.StreamValueToBitString(ref cursor, ref bitString, MidiConstants.TRACK_SIGNATURE);
StreamingHelper.StreamValueToBitString(ref cursor, ref bitString, _length);
foreach (var e in Events)
{
StreamingHelper.StreamObjectToBitString(ref cursor, ref bitString, e, e.GetLength());
}
return(bitString);
}
public byte[] ToBitString()
{
var bitString = new byte[GetLength()];
uint cursor = 0;
StreamingHelper.StreamObjectToBitString(ref cursor, ref bitString, TimeDelta, TimeDelta.Length);
StreamingHelper.StreamValueToBitString(ref cursor, ref bitString, EventType);
foreach (var b in EventData)
{
StreamingHelper.StreamValueToBitString(ref cursor, ref bitString, b);
}
return(bitString);
}
public void FromBitString(byte[] bitString, int fileSize)
{
uint cursor = 0;
var signature = StreamingHelper.GetIntFromBitString(ref cursor, ref bitString);
if (signature != MidiConstants.MIDI_SIGNATURE)
{
throw new MidiException("Unexpected values in signature. Expected MThd (0x4D546864)");
}
var length = StreamingHelper.GetIntFromBitString(ref cursor, ref bitString);
var format = StreamingHelper.GetShortFromBitString(ref cursor, ref bitString);
var tracks = StreamingHelper.GetShortFromBitString(ref cursor, ref bitString);
var division = StreamingHelper.GetShortFromBitString(ref cursor, ref bitString);
Chunks.Add(new HeaderChunk(length, format, tracks, division));
while (cursor < fileSize)
{
signature = StreamingHelper.GetIntFromBitString(ref cursor, ref bitString);
if (signature != MidiConstants.TRACK_SIGNATURE)
{
throw new MidiException("Unexpected values in signature. Expected MTrk (0x4D54726B)");
}
length = StreamingHelper.GetIntFromBitString(ref cursor, ref bitString);
var endOfTrack = length + cursor;
var events = new List <IEvent>();
while (cursor < endOfTrack)
{
var deltaTime = StreamingHelper.GetVariableLengthValueFromBitString(ref cursor, ref bitString);
var eventType = StreamingHelper.GetByteFromBitString(ref cursor, ref bitString);
if (eventType == MidiConstants.META_EVENT)
{
var metaEventType = StreamingHelper.GetByteFromBitString(ref cursor, ref bitString);
if (metaEventType == MidiConstants.END_OF_TRACK)
{
if (cursor + 1 != endOfTrack)
{
throw new MidiException("Unexpected End of Track event");
}
}
var eventLength = StreamingHelper.GetVariableLengthValueFromBitString(ref cursor, ref bitString);
var eventData = new List <byte>();
if (eventLength.ToNumber() != 0)
{
for (uint i = 0; i < eventLength.ToNumber(); ++i)
{
eventData.Add(StreamingHelper.GetByteFromBitString(ref cursor, ref bitString));
}
}
events.Add(new MetaEvent(deltaTime, metaEventType, eventLength, eventData));
}
else if (eventType < MidiConstants.META_EVENT && eventType >= MidiConstants.SYSEX_EVENT)
{
var eventLength = StreamingHelper.GetVariableLengthValueFromBitString(ref cursor, ref bitString);
var eventData = new List <byte>();
if (eventLength.ToNumber() != 0)
{
for (uint i = 0; i < eventLength.ToNumber(); ++i)
{
eventData.Add(StreamingHelper.GetByteFromBitString(ref cursor, ref bitString));
}
}
events.Add(new SysexEvent(deltaTime, eventType, eventLength, eventData));
}
else if (eventType < MidiConstants.SYSEX_EVENT && eventType >= MidiConstants.NOTE_OFF)
{
var eventData = new List <byte>();
if (eventType < MidiConstants.PROGRAM || eventType >= MidiConstants.PITCH)
{
eventData.Add(StreamingHelper.GetByteFromBitString(ref cursor, ref bitString));
eventData.Add(StreamingHelper.GetByteFromBitString(ref cursor, ref bitString));
}
else
{
eventData.Add(StreamingHelper.GetByteFromBitString(ref cursor, ref bitString));
}
events.Add(new MidiEvent(deltaTime, eventType, eventData));
}
}
Chunks.Add(new TrackChunk(length, events));
}
}
