Pushing Messages onto an Array?

Christoph Hart

Before you reinvent the wheel, you are aware that the MIDI player has a record function that does exactly this? You can even supply it a post processing function that will give you an array of all new events that you then can process (eg. for quantization).

I'm using this in a current product I'm working on, so I would consider it stable but under documented - like everything in HISE that comes fresh out of the oven :)

These MIDIPlayer functions are useful in this case:

setUseTimestampInTicks() - calling this in onInit is highly recommended as it will use ticks instead of samples as unit which makes sample rate agnostic operations much more simple (960 ticks = 1 quarter).
record() / stop(): obvious...
setRecordEventCallback() - supply it with a function that modifies the array of MessageHolders before it gets written into the MIDI sequence
setSyncToMasterClock() hooks the MIDI player to be controlled by the master clock (and then use the TransportHandler for DAW syncing).

Natan

@Christoph-Hart
Legend, Could you please Do an example for these?
setUseTimestampInTicks()
MidiPlayer.setSyncToMasterClock

clevername27

@Natan EDIT: What I've written below is approximate, not actual code. You'll need to create MIDI player in your Module Tree.

const TH = Engine.createTransportHandler();
TH.setEnableGrid(true, 4);
TH.setSyncMode(TH.PreferExternal);
TH.setOnGridChange(true, GridChange);
const var yourMidiPlayer = Synth.getMidiPlayer("myMidiPlayer");
yourMidiPlayer.setUseTimestampInTicks();
yourMidiPlayer.setSyncToMasterClock(true);

You'll need to either create a new sequence or load one.

clevername27

@Christoph-Hart Thank you for the suggestion. I tried that first, actually, but the MIDI player, and particularly recording, seemed oriented to looping a couple bars (e.g., MidiPlayer.create(int nominator, int denominator, int barLength))?

Natan

@clevername27 Thank you so Much Mate <3 :folded_hands:
Is there any difference that I Can hear, I Mean the results of the above code are obvious or it's a daw and Midi Thing?

IMPORTANT! And one Quick question, Let's say I have 3 MidiPlayers, is It safe to use the code three times? or Inside a Loop?

clevername27

@Natan Can you explain your first question in more detail? If you have three MIDI players, then you'd need to do this for all three—you'd call this at init, not inside a loop.

ustk

@clevername27 except if they are stored in an array:

const var yourMidiPlayers = [Synth.getMidiPlayer("myMidiPlayer1"),
			     Synth.getMidiPlayer("myMidiPlayer2"),
			     Synth.getMidiPlayer("myMidiPlayer3")];

for (p in yourMidiPlayers)
{
	p.setUseTimestampInTicks();
	p.setSyncToMasterClock();
}

clevername27

@ustk Ah, OK cheers - I wasn't sure what @Natan meant by an array. Do you know what the error message "You have to enable the master clock before using this method" is?

ustk

@clevername27 following this:

void ScriptingObjects::ScriptedMidiPlayer::setSyncToMasterClock(bool shouldSyncToMasterClock)
{
	if (shouldSyncToMasterClock && !getScriptProcessor()->getMainController_()->getMasterClock().isGridEnabled())
	{
		reportScriptError("You have to enable the master clock before using this method");
	}
	else
	{
		getPlayer()->setSyncToMasterClock(shouldSyncToMasterClock);
	}
}

The grid has to be enabled

clevername27

@ustk Cheers!

clevername27

@clevername27 Solved.

Pushing Messages onto an Array?

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