public bool LoadMidi(MidiFile midi, bool UnloadUnusedInstruments)
{
if (playing == true)
{
return(false);
}
_MidiFile = midi;
if (_MidiFile.SequencerReady == false)
{
try
{
//Combine all tracks into 1 track that is organized from lowest to highest abs time
_MidiFile.CombineTracks();
//Convert delta time to sample time
eventIndex = 0;
uint lastSample = 0;
for (int x = 0; x < _MidiFile.Tracks[0].MidiEvents.Length; x++)
{
_MidiFile.Tracks[0].MidiEvents[x].deltaTime = lastSample + (uint)DeltaTimetoSamples(_MidiFile.Tracks[0].MidiEvents[x].deltaTime);
lastSample = _MidiFile.Tracks[0].MidiEvents[x].deltaTime;
//Update tempo
if (_MidiFile.Tracks[0].MidiEvents[x].midiMetaEvent == MidiHelper.MidiMetaEvent.Tempo)
{
_MidiFile.BeatsPerMinute = MidiHelper.MicroSecondsPerMinute / System.Convert.ToUInt32(_MidiFile.Tracks[0].MidiEvents[x].Parameters[0]);
}
}
//Set total time to proper value
_MidiFile.Tracks[0].TotalTime = _MidiFile.Tracks[0].MidiEvents[_MidiFile.Tracks[0].MidiEvents.Length - 1].deltaTime;
//reset tempo
_MidiFile.BeatsPerMinute = 120;
//mark midi as ready for sequencing
_MidiFile.SequencerReady = true;
}
catch (Exception ex)
{
//UnitySynth
Debug.Log("Error Loading Midi:\n" + ex.Message);
return(false);
}
}
blockList.Clear();
if (UnloadUnusedInstruments == true)
{
if (synth.SoundBank == null)
{//If there is no bank warn the developer =)
Debug.Log("No Soundbank loaded !");
}
else
{
string bankStr = synth.SoundBank.BankPath;
//Remove old bank being used by synth
synth.UnloadBank();
//Add the bank and switch to it with the synth
BankManager.addBank(new InstrumentBank(synth.SampleRate, bankStr, _MidiFile.Tracks[0].Programs, _MidiFile.Tracks[0].DrumPrograms));
synth.SwitchBank(BankManager.Count - 1);
}
}
return(true);
}
protected override void OpenMediaAsync()
{
System.Diagnostics.Debug.WriteLine("OpenMediaAsync");
Dictionary <MediaStreamAttributeKeys, string> streamAttributes = new Dictionary <MediaStreamAttributeKeys, string>();
Dictionary <MediaSourceAttributesKeys, string> sourceAttributes = new Dictionary <MediaSourceAttributesKeys, string>();
List <MediaStreamDescription> availableStreams = new List <MediaStreamDescription>();
string codec = "";
codec += ToLittleEndianString(string.Format("{0:X4}", 1));
codec += ToLittleEndianString(string.Format("{0:X4}", 1));
codec += ToLittleEndianString(string.Format("{0:X8}", SamplesPerSec));
codec += ToLittleEndianString(string.Format("{0:X8}", AvgBytesPerSec));
codec += ToLittleEndianString(string.Format("{0:X4}", BlockAlign));
codec += ToLittleEndianString(string.Format("{0:X4}", BitsPerSample));
codec += ToLittleEndianString(string.Format("{0:X4}", 0));
streamAttributes[MediaStreamAttributeKeys.CodecPrivateData] = codec;
sourceAttributes[MediaSourceAttributesKeys.Duration] = "0";
sourceAttributes[MediaSourceAttributesKeys.CanSeek] = "false";
MediaStreamDescription msd = new MediaStreamDescription(MediaStreamType.Audio, streamAttributes);
_audioDesc = msd;
availableStreams.Add(_audioDesc);
String bankName = "SoundBanks/GMBank/gmpiano.txt";
var file = Application.GetResourceStream(new Uri(bankName, UriKind.Relative));
String result = "";
using (var reader = new StreamReader(file.Stream))
{
result += reader.ReadToEnd();
}
synth = new StreamSynthesizer(44100, 1, 1000, 2);
CSharpSynth.Banks.BankManager.addBank(new InstrumentBank(44100, bankName));
int bankfile = BankManager.Count - 1;
synth.SwitchBank(bankfile);
byte[] buffer = new byte[synth.BufferSize];
midiSeq = new MidiSequencer(synth);
midiSeq.LoadMidi("temp.mid", false);
//System.Diagnostics.Debug.WriteLine("midi file is ");
//System.Diagnostics.Debug.WriteLine(midifile.OriginalString);
//midiSeq.LoadMidi(midifile.OriginalString, false);
midiSeq.Looping = true;
midiSeq.Play();
startTime = DateTime.Now;
ReportOpenMediaCompleted(sourceAttributes, availableStreams);
}