Audio Render not working as expected

[johnmike]

Messing around with the audio render snippet example in the snippet browser....works fine in the example...but when I bring it into my project...it doesn't render anything but dead space...and then the audio in HISE becomes completely disabled and I have to restart to get it back working....im trying to get it to render a preloaded midi file instead of the one that's created by the example...here's the code ive added in the attempt to make it work....

Content.makeFrontInterface(510, 160);

const var DELETE_TEMP_FILE = false;

const var SeqView = Content.addPanel("SeqView", 0, 90);
SeqView.set("width", 210);

const var AudioDragger = Content.addPanel("Dragger", 0, 32);
AudioDragger.set("width", 210);

AudioDragger.set("allowCallbacks", "Clicks & Hover");

const var MidiPlayer = Synth.getMidiPlayer("MIDI Player1");

AudioDragger.setMouseCallback(function(event) {
    this.data.hover = event.hover;
    this.repaint();

    if (event.clicked) {
        if (isDefined(this.data.tempFile)) {
            var fToDelete = this.data.tempFile;

            this.startExternalFileDrag(this.data.tempFile, true, function [fToDelete]() {
                if (DELETE_TEMP_FILE) {
                    Console.print("DELETE " + fToDelete.toString(0));
                    fToDelete.deleteFileOrDirectory();
                }
            });
        } else {
            Console.print("! You need to click on render first.");
        }
    }
});

// Button to Begin Rendering
const var Button1 = Content.addButton("Button1", 0, 0);
Button1.set("text", "Render");
Button1.set("isMomentary", true);
Button1.set("saveInPreset", false);
Button1.set("width", 210);

Button1.setControlCallback(onButton1Control);
inline function onButton1Control(component, value) {
    if (value) {
        if (!MidiPlayer.isEmpty()) {
            Console.print("MIDI Player has a sequence loaded.");
            local eventList = MidiPlayer.getEventList();
            Console.print("Event list size: " + eventList.length);

            if (eventList.length == 0) {
                Console.print("! Event list is empty. Cannot render.");
                return;
            }

            // Add a stop event at the end
            local timeSig = MidiPlayer.getTimeSignature();
            local length = timeSig.NumBars * timeSig.Nominator * (timeSig.Denominator / 4.0) * timeSig.LoopEnd;
            local ts = Engine.getSamplesForQuarterBeats(length);

            local stopEvent = Engine.createMessageHolder();
            stopEvent.setType(3);
            stopEvent.setChannel(1);
            stopEvent.setControllerNumber(1);
            stopEvent.setControllerValue(0);
            stopEvent.setTimestamp(ts);

            eventList.push(stopEvent);
            Console.print("Added stop event at timestamp: " + ts);

            // Render the audio
            Console.print("Rendering audio...");
            Engine.renderAudio(eventList, COMPOSER_RenderAudioCallback);
        } else {
            Console.print("! No MIDI file is loaded in the MIDI Player.");
        }
    }
}

inline function COMPOSER_RenderAudioCallback(obj) {
    local isFinished = obj.finished;
    local progressPoint = obj.progress;

    if (isFinished) {
        Console.print("Rendering complete.");
        local bufferDataToWrite = obj.channels;
        local audioFilesDirectory = FileSystem.getFolder(FileSystem.Temp);
        local fileToExport = audioFilesDirectory.getChildFile("export_temp.wav");

        if (!isDefined(bufferDataToWrite[0].length)) {
            fileToExport.writeAudioFile([bufferDataToWrite], Engine.getSampleRate(), 24);
        } else {
            fileToExport.writeAudioFile(bufferDataToWrite, Engine.getSampleRate(), 24);
        }

        Console.print("Audio file exported to: " + fileToExport.toString(0));
        AudioDragger.data.tempFile = fileToExport;
        enableBroadcaster.sendAsyncMessage([true]);
    } else {
        Console.print("Progress: " + progressPoint);
    }
}

// Visualize MIDI Sequence
SeqView.setPaintRoutine(function(g) {
    g.fillAll(0x11FFFFFF);

    var displayArea = this.getLocalBounds(0);
    var noteRectangleList = MidiPlayer.getNoteRectangleList(displayArea);

    g.setColour(Colours.white);

    for (noteRectangle in noteRectangleList) {
        g.fillRect(noteRectangle);
    }
});

// Broadcaster definition
const var enableBroadcaster = Engine.createBroadcaster({
    "id": "enableBroadcaster",
    "args": ["shouldBeEnabled"],
    "tags": []
});

enableBroadcaster.addComponentPropertyListener(["Dragger"], ["enabled"], "set the enabled state for the dragger", 
function(index, shouldBeEnabled) {
    return shouldBeEnabled;
});

enableBroadcaster.addComponentPropertyListener(["Dragger"], ["text"], "update the text", 
function(index, shouldBeEnabled) {
    return shouldBeEnabled ? "Drag to waveform or external target" : "Press render";
});

enableBroadcaster.addComponentRefreshListener(["Dragger"], "repaint", "repaint");
enableBroadcaster.sendAsyncMessage([false]);

inline function drawDragPanel(g) {
    g.fillAll(0x22FFFFFF);
    g.setColour(this.data.hover ? Colours.white : 0xBBFFFFFF);

    if (!this.get("enabled"))
        g.setColour(0x44FFFFFF);

    g.setFont("Default", 14.0);
    g.drawAlignedText(this.get("text"), this.getLocalBounds(0), "centred");
}

AudioDragger.setPaintRoutine(drawDragPanel);

[johnmike]

@clevername27 any thoughts?

[clevername27]

@johnmike Hi John, this is an excellent question - I'm on deadline for a massive project, and will get back with you later in the week with my code. Cheers.