Maestro - Midi Player Tool Kit
Salons textuels / your-questions
your question and if possible answer! Every one can
answer, of course !
midiFileLoader.MPTK_DeltaTicksPerQuarterNote
MPTK_Load(). If
you're already doing that, it means it hasn't finished loading yet. There's
a callback event I can't remember the exact name of right now because I'm not at
my computer but it's something along the lines of midiFilePlayer.OnMidiLoad
and you should call whatever you're doing from there.
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private void OnApplicationPause(bool pause)
{
//Debug.Log("MidiFilePlayer OnApplicationPause " + pause);
if (pause && MPTK_PauseOnFocusLoss)
watchMidi.Stop();
else if (!watchMidi.IsRunning)
watchMidi.Start();
}
void OnApplicationFocus(bool hasFocus)
{
//Debug.Log("MidiFilePlayer OnApplicationFocus " + hasFocus);
if (!hasFocus && MPTK_PauseOnFocusLoss)
watchMidi.Stop();
else if (!watchMidi.IsRunning)
watchMidi.Start();
}
I have Pause On Focus loss set but even though I have that checked, the code in the
else if (!watchMidi.IsRunning) blocks are still running, causing a few seconds of
the midi file to play ahead of my music track.
I believe you can replicate this issue by explicitly calling the pause function from
code, unfocusing the application window and refocusing it, which will cause the midi
to play even though it is supposed to remain paused.
️
perhaps in a few days....
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I will find a solution with a setup.
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midiFilePlayer.OnEventNotesMidi.AddListener(MidiReadEvents);
public void MidiReadEvents(List<MPTKEvent> midiEvents)
{
foreach (MPTKEvent midiEvent in midiEvents)
{
switch (midiEvent.Command)
{
case MPTKCommand.MetaEvent:
switch (midiEvent.Meta)
{
case MPTKMeta.SequenceTrackName:
infoSeqTrackName += $"Track:{midiEvent.Track:00} '{midiEvent.Info}'\n";
//Debug.LogFormat($"SequenceTrackName Track:{midiEvent.Track} {midiEvent.Value} Name:'{midiEvent.Info}'");
break;
}
break;
}
}
}
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I want to generate synth sounds from input in Unity, ideally I would like to control my
external Synth (VST) where I already have lots of presets created.
So a concrete case would be for example:
Cheers
I want to generate synth sounds from input in Unity, ideally I would like to control
my external Synth (VST) where I already have lots of presets created.
So a concrete case would be for example:
Cheers
SoundFont not yet loaded, Midi Event cannot be processed Code:NoteOn Channel:0
...
MidiPlayerTK.MidiStreamPlayer:MPTK_PlayEvent (MidiPlayerTK.MPTKEvent) (at .../MidiStreamPlayer.cs:148)
MPTK_ChannelBankGetIndex
returns -1 when in the error state. Re-running MPTK_InitSynth
doesn't fix the sound, although MPTK_ChannelBankGetIndex
returns 0 after running it.
I'm not familiar with SoundFonts, how do I reload it and perhaps what causes it
to unload? 
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Have
a Nice New Year.
I need to keep my 5 stars!
midiFilePlayer.MPTK_ChannelVolumeSet(15, 0.00001f);
string filename = Path.Combine(Application.persistentDataPath, midiFilePlayer.MPTK_MidiName + "2.mid");
MidiFileWriter2 mfw = new MidiFileWriter2(midiFilePlayer.MPTK_DeltaTicksPerQuarterNote, 1);
mfw.MPTK_LoadFromMPTK(midiFilePlayer.MPTK_MidiEvents, midiFilePlayer.MPTK_TrackCount);
mfw.MPTK_WriteToFile(filename);
Debug.Log("saved file " + filename);
Channel 15 still has its normal volume. Is there any way to change this?
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private static void example(MidiStreamPlayer player)
{
List<MPTKEvent> notes = new List<MPTKEvent>();
for (int i = 0; i < 5; i++)
{
notes.Add(new MPTKEvent()
{
Command = MPTKCommand.NoteOn,
Value = 60,
Channel = 0,
Duration = 1000,
Velocity = 100,
Delay = i * 1000,
});
}
player.MPTK_PlayEvent(notes);
} 1
private static void example(MidiStreamPlayer player)
{
List<MPTKEvent> notes = new List<MPTKEvent>();
for (int i = 0; i < 5; i++)
{
notes.Add(new MPTKEvent()
{
Command = MPTKCommand.NoteOn,
Value = 60,
Channel = 0,
Duration = 1000,
Velocity = 100,
Delay = i * 1000,
});
}
player.MPTK_PlayEvent(notes);
} 
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):
The strength of MPTK is precisely to use the Unity audio system: each MidiStreamPlayer
builds the results samples (thanks to the wonderful fluidsynth) and send it to an
AudioSource. 
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fluid_synth_alloc_voice - Clip Grand-Piano-Dd5 not ready to play Loading
UnityEngine.DebugLogHandler:Internal_Log(LogType, LogOption, String, Object)
UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[])
UnityEngine.Logger:LogFormat(LogType, String, Object[])
UnityEngine.Debug:LogWarningFormat(String, Object[])
MidiPlayerTK.MidiSynth:fluid_synth_alloc_voice(HiSample, Int32, Int32, Int32, Int32)
MidiPlayerTK.MidiSynth:synth_noteon(MPTKEvent)
MidiPlayerTK.MidiSynth:MPTK_PlayDirectEvent(MPTKEvent, Boolean)
MidiPlayerTK.<ThreadLegacyPlay>d__137:MoveNext()
<CancelWith>d__4:MoveNext()
MEC.Routine:Update()
Added the screenshot from MidiSynth.cs that throws this error.
fluid_synth_alloc_voice - Clip Grand-Piano-Dd5 not ready to play Loading
UnityEngine.DebugLogHandler:Internal_Log(LogType, LogOption, String, Object)
UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[])
UnityEngine.Logger:LogFormat(LogType, String, Object[])
UnityEngine.Debug:LogWarningFormat(String, Object[])
MidiPlayerTK.MidiSynth:fluid_synth_alloc_voice(HiSample, Int32, Int32, Int32, Int32)
MidiPlayerTK.MidiSynth:synth_noteon(MPTKEvent)
MidiPlayerTK.MidiSynth:MPTK_PlayDirectEvent(MPTKEvent, Boolean)
MidiPlayerTK.<ThreadLegacyPlay>d__137:MoveNext()
<CancelWith>d__4:MoveNext()
MEC.Routine:Update()
Added the screenshot from MidiSynth.cs that throws this error.
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midiPlayer.OnEventNotesMidi.AddListener((List<MPTKEvent> events) => {
foreach (MPTKEvent mptkEvent in events)
if (mptkEvent.Command == MPTKCommand.NoteOn)
foreach (INotePlayedListener listener in notePlayedListeners) {
listener.OnNotePlayed();
Debug.Log("Note played at tick " + mptkEvent.Tick);
}
});
where the last note's event doesn't get logged sometimes. It seems to happen
sporadically when using Stop When All Voices Released. Stop No Waiting it happens
more, and Stop When All Voices Ended seems to never skip the last event
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private MidiFileWriter2 CreateMidiStream_one_note_ticks()
{
// In this demo, we are using variable to contains tracks and channel values only for better understanding.
// Using multiple tracks is not mandatory, you can arrange your song as you want.
// But first track (index=0) is often use for general MIDI information track, lyrics, tempo change. By convention contains no noteon.
int track0 = 0;
// Second track (index=1) will contains the notes, preset change, .... all events associated to a channel.
int track1 = 1;
int channel0 = 0; // we are using only one channel in this demo
long absoluteTime = 0;
// Create a Midi file of type 1 (recommended)
MidiFileWriter2 mfw = new MidiFileWriter2();
mfw.MPTK_AddTimeSignature(0, 0, 4, 4);
// 240 is the default. A classical value for a Midi. define the time precision.
int ticksPerQuarterNote = mfw.MPTK_DeltaTicksPerQuarterNote;
// Some textual information added to the track 0 at time=0
mfw.MPTK_AddText(
track0,
0,
MPTKMeta.Copyright,
"Simple MIDI Generated. 4 quarter at 120 BPM"
);
// Define Tempo is not mandatory when using time in ticks. The default 120 BPM will be used.
//mfw.MPTK_AddBPMChange(track0, 0, 120);
mfw.MPTK_AddNote(
track1,
absoluteTime,
channel0,
UnityEngine.Random.Range(41, 80),
50,
ticksPerQuarterNote
);
// mfw.MPTK_AddSilence(track1, absoluteTime, channel0, ticksPerQuarterNote * 2);
return mfw;
} 1
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but
playing with sound effect are better.
As MidiFilePlayer or MidiStreamPlayer inherits from the class MidiSynth, you have access
to MPTK_ChorusDelay (for example) with an instance of them, like
midiFilePlayer.MPTK_ChorusDelay=0.2 
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great
asset and great choice of sample music
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public class MidiNotePlayer : MonoBehaviour {
public MidiStreamPlayer midiStreamPlayer;
public string midiName = "Animal Crossing";
private List<MPTKEvent> midiEvents;
private int currentNoteIndex = 0;
void Start() {
LoadMidiEvents();
}
void LoadMidiEvents() {
var midiLoad = new MidiLoad();
midiLoad.MPTK_Load(midiName);
midiEvents = midiLoad.MPTK_ReadMidiEvents();
}
public void PlayNextNote() {
if (midiStreamPlayer == null) {
Debug.LogError("MidiStreamPlayer is not assigned!");
return;
}
if (midiEvents == null || midiEvents.Count == 0) {
Debug.Log("No MIDI events loaded.");
return;
}
bool notePlayed = false;
// Start a loop to handle simultaneous notes
while (currentNoteIndex < midiEvents.Count) {
MPTKEvent midiEvent = midiEvents[currentNoteIndex];
if (midiEvent.Command == MPTKCommand.NoteOn && midiEvent.Velocity > 0) {
midiStreamPlayer.MPTK_PlayEvent(midiEvent);
notePlayed = true;
}
currentNoteIndex++;
if (currentNoteIndex >= midiEvents.Count) {
currentNoteIndex = 0;
if (notePlayed) break;
} else if(notePlayed && (currentNoteIndex >= midiEvents.Count || midiEvents[currentNoteIndex].RealTime != midiEvent.RealTime)) {
break;
}
}
}
}
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).
Yes, you could have 15 MIDI files playing simultaneously with 15 different BPMs with 15
MidiFilePlayers prefab ... if you are not too demanding about the synchronization
between each MIDI files.
Or build a special MIDI player that splits all tracks into threaded MIDI players. But
that might be hard to develop.
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Because there is no tempo change, so the default tempo is applied (120).
Look at your MIDI with "MIDI File Setup": 
Because there is no tempo change, so the default tempo is applied (120).
Look at your MIDI with "MIDI File Setup": 1
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The advantage of MIDI is an incredible interaction with your game play, and why not,
generate your music by algo which is not possible with samples whatever the
format.
I found a solution: just set the InnerLoop attributes with the OnEventStartPlayMidi
event.
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// Display current measure and beat value of the last MIDI event read by the MIDI sequencer.
Debug.Log($"MPTK_NumberBeatsMeasure: {midiExternalPlayer.midiLoaded.MPTK_NumberBeatsMeasure} MPTK_CurrentMeasure: {midiExternalPlayer.MPTK_MidiLoaded.MPTK_CurrentMeasure}.{midiExternalPlayer.MPTK_MidiLoaded.MPTK_CurrentBeat} - Last measure: {midiExternalPlayer.MPTK_MidiLoaded.MPTK_MeasureLastNote}");
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I will change this soon.
Have a look to the demo "MiIDI File Writer", source file
Assets\MidiPlayer\Demo\ProDemos\Script\TestMidiGenerator.cs
For example here:
/// <summary>@brief
/// Play 3x4 quarters with a tempo change.
/// </summary>
/// <returns></returns>
private MPTKWriter CreateMidiStream_tempochange()
{
MPTKWriter mfw = new MPTKWriter(deltaTicksPerQuarterNote: 500);
mfw.AddBPMChange(1, 0 * mfw.DeltaTicksPerQuarterNote, 60);
mfw.AddNote(1, 0 * mfw.DeltaTicksPerQuarterNote, 0, 60, 60, mfw.DeltaTicksPerQuarterNote);
mfw.AddNote(1, 1 * mfw.DeltaTicksPerQuarterNote, 0, 61, 60, mfw.DeltaTicksPerQuarterNote);
mfw.AddNote(1, 2 * mfw.DeltaTicksPerQuarterNote, 0, 62, 60, mfw.DeltaTicksPerQuarterNote);
mfw.AddNote(1, 3 * mfw.DeltaTicksPerQuarterNote, 0, 63, 60, mfw.DeltaTicksPerQuarterNote);
mfw.AddBPMChange(1, 4 * mfw.DeltaTicksPerQuarterNote, 120);
mfw.AddNote(1, 4 * mfw.DeltaTicksPerQuarterNote, 0, 60, 60, mfw.DeltaTicksPerQuarterNote);
mfw.AddNote(1, 5 * mfw.DeltaTicksPerQuarterNote, 0, 61, 60, mfw.DeltaTicksPerQuarterNote);
mfw.AddNote(1, 6 * mfw.DeltaTicksPerQuarterNote, 0, 62, 60, mfw.DeltaTicksPerQuarterNote);
mfw.AddNote(1, 7 * mfw.DeltaTicksPerQuarterNote, 0, 63, 60, mfw.DeltaTicksPerQuarterNote);
mfw.AddBPMChange(1, 8 * mfw.DeltaTicksPerQuarterNote, 240);
mfw.AddNote(1, 8 * mfw.DeltaTicksPerQuarterNote, 0, 60, 60, mfw.DeltaTicksPerQuarterNote);
mfw.AddNote(1, 9 * mfw.DeltaTicksPerQuarterNote, 0, 61, 60, mfw.DeltaTicksPerQuarterNote);
mfw.AddNote(1, 10 * mfw.DeltaTicksPerQuarterNote, 0, 62, 60, mfw.DeltaTicksPerQuarterNote);
mfw.AddNote(1, 11 * mfw.DeltaTicksPerQuarterNote, 0, 63, 60, mfw.DeltaTicksPerQuarterNote);
return mfw;
}
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just am having no luck knowing how to get my pipeline working to make my own files in a
reasonable way. 1 1
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private void PatchChange(int patch)
{
LastTimeActivity = Time.realtimeSinceStartup;
SeqTimeUpdate = true;
// Play the change directly
midiStreamPlayer.MPTK_PlayEvent(new MPTKEvent { Command = MPTKCommand.PatchChange, Value = patch, Channel = StreamChannel });
// Add midi event "Preset Change" to the midifilewriter object
long tickFromTime = midiFileWriter.ConvertMilliToTick(CurrentTimeMs);
//midiFileWriter.AddChannelAfterTouch(trackNo, tickFromTime, StreamChannel, patch);
midiFileWriter.AddChangePreset(trackNo, tickFromTime, StreamChannel, patch);
}
if (presetNameText)
presetNameText.text = midiStreamPlayer.MPTK_Channels[StreamChannel].PresetName; midiStreamPlayer.MPTK_Channels[StreamChannel].PresetName;
a delay could occurs until the MIDI event Command = MPTKCommand.PatchChange
is effectively run by the MIDI synth which is running in another thread