private void loadStream(Stream stream, bool reloading = false)
{
byte[] array = new byte[4];
stream.Read(array, 0, 4);
if (Encoding.UTF8.GetString(array, 0, array.Length) != "MThd")
{
return;
}
midiHeader = new MidiHeader();
stream.Read(array, 0, 4);
Array.Reverse(array);
BitConverter.ToInt32(array, 0);
array = new byte[2];
stream.Read(array, 0, 2);
Array.Reverse(array);
midiHeader.setMidiFormat(BitConverter.ToInt16(array, 0));
stream.Read(array, 0, 2);
Array.Reverse(array);
int num = BitConverter.ToInt16(array, 0);
stream.Read(array, 0, 2);
Array.Reverse(array);
int num2 = BitConverter.ToInt16(array, 0);
midiHeader.DeltaTiming = (num2 & 0x7FFF);
midiHeader.TimeFormat = (((num2 & 0x8000) > 0) ? MidiHelper.MidiTimeFormat.FamesPerSecond : MidiHelper.MidiTimeFormat.TicksPerBeat);
bool flag = (!reloading || tracks.Count != num) ? true : false;
if (flag)
{
tracks.Clear();
seqEvt.Events.Clear();
}
int num3 = 0;
while (true)
{
if (num3 >= num)
{
return;
}
MidiTrack midiTrack = null;
MidiSequencerEvent midiSequencerEvent = null;
if (flag)
{
midiTrack = new MidiTrack();
tracks.Add(midiTrack);
midiSequencerEvent = new MidiSequencerEvent();
seqEvt.Events.Add(midiSequencerEvent);
}
else
{
midiTrack = tracks[num3];
midiTrack.TotalTime = 0uL;
midiSequencerEvent = seqEvt.Events[num3];
}
List <byte> list = new List <byte>();
List <byte> list2 = new List <byte>();
List <MidiEvent> list3 = new List <MidiEvent>();
list.Add(0);
list2.Add(0);
array = new byte[4];
stream.Read(array, 0, 4);
if (Encoding.UTF8.GetString(array, 0, array.Length) != "MTrk")
{
break;
}
stream.Read(array, 0, 4);
Array.Reverse(array);
int num4 = BitConverter.ToInt32(array, 0);
array = new byte[num4];
stream.Read(array, 0, num4);
int i = 0;
byte b = 0;
int num5 = 0;
MidiEvent midiEvent;
for (; i < array.Length; list3.Add(midiEvent), tracks[num3].TotalTime = tracks[num3].TotalTime + midiEvent.deltaTime)
{
ushort numOfBytes = 0;
uint data = BitConverter.ToUInt32(array, i);
midiEvent = new MidiEvent();
midiEvent.deltaTime = GetTime(data, ref numOfBytes);
i += 4 - (4 - numOfBytes);
byte b2 = array[i];
int num6 = GetChannel(b2);
if (b2 < 128)
{
b2 = b;
num6 = num5;
i--;
}
if (b2 != byte.MaxValue)
{
b2 = (byte)(b2 & 0xF0);
}
b = b2;
num5 = num6;
switch (b2)
{
case 128:
midiEvent.midiChannelEvent = MidiHelper.MidiChannelEvent.Note_Off;
i++;
midiEvent.channel = (byte)num6;
midiEvent.Parameters[0] = midiEvent.channel;
midiEvent.parameter1 = array[i++];
midiEvent.parameter2 = array[i++];
midiEvent.Parameters[1] = midiEvent.parameter1;
midiEvent.Parameters[2] = midiEvent.parameter2;
continue;
case 144:
midiEvent.midiChannelEvent = MidiHelper.MidiChannelEvent.Note_On;
i++;
midiEvent.channel = (byte)num6;
midiEvent.Parameters[0] = midiEvent.channel;
midiEvent.parameter1 = array[i++];
midiEvent.parameter2 = array[i++];
midiEvent.Parameters[1] = midiEvent.parameter1;
midiEvent.Parameters[2] = midiEvent.parameter2;
if (midiEvent.parameter2 == 0)
{
midiEvent.midiChannelEvent = MidiHelper.MidiChannelEvent.Note_Off;
}
tracks[num3].NotesPlayed++;
continue;
case 160:
midiEvent.midiChannelEvent = MidiHelper.MidiChannelEvent.Note_Aftertouch;
midiEvent.channel = (byte)num6;
midiEvent.Parameters[0] = midiEvent.channel;
i++;
midiEvent.parameter1 = array[++i];
midiEvent.parameter2 = array[++i];
continue;
case 176:
midiEvent.midiChannelEvent = MidiHelper.MidiChannelEvent.Controller;
midiEvent.channel = (byte)num6;
midiEvent.Parameters[0] = midiEvent.channel;
i++;
midiEvent.parameter1 = array[i++];
midiEvent.parameter2 = array[i++];
midiEvent.Parameters[1] = midiEvent.parameter1;
midiEvent.Parameters[2] = midiEvent.parameter2;
continue;
case 192:
midiEvent.midiChannelEvent = MidiHelper.MidiChannelEvent.Program_Change;
midiEvent.channel = (byte)num6;
midiEvent.Parameters[0] = midiEvent.channel;
i++;
midiEvent.parameter1 = array[i++];
midiEvent.Parameters[1] = midiEvent.parameter1;
if (midiEvent.channel != 9)
{
if (!list.Contains(midiEvent.parameter1))
{
list.Add(midiEvent.parameter1);
}
}
else if (!list2.Contains(midiEvent.parameter1))
{
list2.Add(midiEvent.parameter1);
}
continue;
case 208:
midiEvent.midiChannelEvent = MidiHelper.MidiChannelEvent.Channel_Aftertouch;
midiEvent.channel = (byte)num6;
midiEvent.Parameters[0] = midiEvent.channel;
i++;
midiEvent.parameter1 = array[++i];
continue;
case 224:
{
midiEvent.midiChannelEvent = MidiHelper.MidiChannelEvent.Pitch_Bend;
midiEvent.channel = (byte)num6;
midiEvent.Parameters[0] = midiEvent.channel;
i++;
midiEvent.parameter1 = array[++i];
midiEvent.parameter2 = array[++i];
ushort parameter = midiEvent.parameter1;
parameter = (ushort)(parameter << 7);
parameter = (ushort)(parameter | midiEvent.parameter2);
midiEvent.Parameters[1] = ((double)(int)parameter - 8192.0) / 8192.0;
continue;
}
case byte.MaxValue:
switch (array[++i])
{
case 0:
midiEvent.midiMetaEvent = MidiHelper.MidiMetaEvent.Sequence_Number;
i++;
break;
case 1:
midiEvent.midiMetaEvent = MidiHelper.MidiMetaEvent.Text_Event;
i++;
midiEvent.parameter1 = array[i++];
midiEvent.Parameters[0] = midiEvent.parameter1;
midiEvent.Parameters[1] = Encoding.UTF8.GetString(array, i, array[i - 1]);
i += array[i - 1];
break;
case 2:
midiEvent.midiMetaEvent = MidiHelper.MidiMetaEvent.Copyright_Notice;
i++;
midiEvent.parameter1 = array[i++];
midiEvent.Parameters[0] = midiEvent.parameter1;
midiEvent.Parameters[1] = Encoding.UTF8.GetString(array, i, array[i - 1]);
i += array[i - 1];
break;
case 3:
midiEvent.midiMetaEvent = MidiHelper.MidiMetaEvent.Sequence_Or_Track_Name;
i++;
midiEvent.parameter1 = array[i++];
midiEvent.Parameters[0] = midiEvent.parameter1;
midiEvent.Parameters[1] = Encoding.UTF8.GetString(array, i, array[i - 1]);
i += array[i - 1];
break;
case 4:
midiEvent.midiMetaEvent = MidiHelper.MidiMetaEvent.Instrument_Name;
i++;
midiEvent.Parameters[0] = Encoding.UTF8.GetString(array, i + 1, array[i]);
i += array[i] + 1;
break;
case 5:
midiEvent.midiMetaEvent = MidiHelper.MidiMetaEvent.Lyric_Text;
i++;
midiEvent.Parameters[0] = Encoding.UTF8.GetString(array, i + 1, array[i]);
i += array[i] + 1;
break;
case 6:
midiEvent.midiMetaEvent = MidiHelper.MidiMetaEvent.Marker_Text;
i++;
midiEvent.Parameters[0] = Encoding.UTF8.GetString(array, i + 1, array[i]);
i += array[i] + 1;
break;
case 7:
midiEvent.midiMetaEvent = MidiHelper.MidiMetaEvent.Cue_Point;
i++;
midiEvent.Parameters[0] = Encoding.UTF8.GetString(array, i + 1, array[i]);
i += array[i] + 1;
break;
case 32:
midiEvent.midiMetaEvent = MidiHelper.MidiMetaEvent.Midi_Channel_Prefix_Assignment;
i++;
midiEvent.parameter1 = array[i++];
midiEvent.Parameters[0] = midiEvent.parameter1;
midiEvent.Parameters[1] = array[i++];
break;
case 47:
midiEvent.midiMetaEvent = MidiHelper.MidiMetaEvent.End_of_Track;
i += 2;
break;
case 81:
{
midiEvent.midiMetaEvent = MidiHelper.MidiMetaEvent.Tempo;
i++;
midiEvent.Parameters[4] = array[i++];
byte[] array3 = new byte[4];
for (int num29 = 0; num29 < 3; num29++)
{
array3[num29 + 1] = array[num29 + i];
}
i += 3;
byte[] array4 = new byte[4];
for (int num30 = 0; num30 < 4; num30++)
{
array4[3 - num30] = array3[num30];
}
uint num31 = BitConverter.ToUInt32(array4, 0);
midiEvent.Parameters[0] = num31;
break;
}
case 84:
{
midiEvent.midiMetaEvent = MidiHelper.MidiMetaEvent.Smpte_Offset;
i++;
int num16 = array[i++];
if (num16 >= 4)
{
for (int n = 0; n < 4; n++)
{
midiEvent.Parameters[n] = array[i++];
}
}
else
{
for (int num18 = 0; num18 < num16; num18++)
{
midiEvent.Parameters[num18] = array[i++];
}
}
for (int num20 = 4; num20 < num16; num20++)
{
i++;
}
break;
}
case 88:
{
midiEvent.midiMetaEvent = MidiHelper.MidiMetaEvent.Time_Signature;
i++;
int num22 = array[i++];
if (num22 >= 4)
{
for (int num23 = 0; num23 < 4; num23++)
{
midiEvent.Parameters[num23] = array[i++];
}
}
else
{
for (int num25 = 0; num25 < num22; num25++)
{
midiEvent.Parameters[num25] = array[i++];
}
}
for (int num27 = 4; num27 < num22; num27++)
{
i++;
}
break;
}
case 89:
{
midiEvent.midiMetaEvent = MidiHelper.MidiMetaEvent.Key_Signature;
i++;
int num10 = array[i++];
if (num10 >= 4)
{
for (int k = 0; k < 4; k++)
{
midiEvent.Parameters[k] = array[i++];
}
}
else
{
for (int l = 0; l < num10; l++)
{
midiEvent.Parameters[l] = array[i++];
}
}
for (int m = 4; m < num10; m++)
{
i++;
}
break;
}
case 127:
{
midiEvent.midiMetaEvent = MidiHelper.MidiMetaEvent.Sequencer_Specific_Event;
i++;
midiEvent.Parameters[4] = array[i++];
byte[] array2 = new byte[(byte)midiEvent.Parameters[4]];
for (int j = 0; j < array2.Length; j++)
{
array2[j] = array[i++];
}
midiEvent.Parameters[0] = array2;
break;
}
}
continue;
case 240:
break;
default:
continue;
}
for (; array[i] != 247; i++)
{
}
i++;
}
tracks[num3].Programs = list.ToArray();
tracks[num3].DrumPrograms = list2.ToArray();
tracks[num3].MidiEvents = list3.ToArray();
num3++;
}
throw new Exception("Invalid track!");
}
