parsing sf2 files - sometime bug, sometime good ?

[ArouG]

extract from console :
-------- bad one :
...
changement de fontes : OPL-3_FM_128M(Sound_Blaster_16).sf2 songplayer.php:313:18
nouveau synthétiseur ! songplayer.php:339:12
Error: SF parsing error: Invalid chunk header! Expected "riff" got "" The file may be corrupted. basic_soundfont.js:299:15
Error: Error: SF parsing error: Invalid chunk header! Expected "riff" got "" The file may be corrupted.
handleMessage http://localhost/myKaraOk/spessasynth_lib/synthetizer/synthetizer.js:379
onmessage http://localhost/myKaraOk/spessasynth_lib/synthetizer/synthetizer.js:183
Synthetizer http://localhost/myKaraOk/spessasynth_lib/synthetizer/synthetizer.js:183
changenomFONTFileInp http://localhost/myKaraOk/songplayer.php:343
onchange http://localhost/myKaraOk/songplayer.php:1
loggin.js:39:17
-------- good one :
...
SoundFont has been loaded! songplayer.php:434:15
changement de fontes : OPL-3_FM_128M(Sound_Blaster_16).sf2 songplayer.php:313:18
création d'un contexte audio songplayer.php:327:13
contexte audio chargé songplayer.php:331:13
nouveau synthétiseur ! songplayer.php:339:12
nouveau synthétiseur chargé ! songplayer.php:345:12
changement de soundfont effectué songplayer.php:379:15

and a slice of my code (javascript) : (if it could help to explain ??)
...
fonction : changeSoundFont

        const filefont = document.getElementById("FONTinp").files[0];
    	    console.log("changement de fontes : "+ filefont.name);
	    soundFontArrayBuffer = await filefont.arrayBuffer(); // convert to array buffer,
	    window.soundFontArrayBuffer = soundFontArrayBuffer;

		if (typeof window.context == 'undefined') {
		// create an audioContext
			console.log("création d'un contexte audio");
			const context = new AudioContext();
	        // add the worklet                                                   
			await context.audioWorklet.addModule(new URL("./spessasynth_lib/" + WORKLET_URL_ABSOLUTE, import.meta.url));
			console.log("contexte audio chargé");
			// sauvegarde
			window.context = context;
		}         
		context = window.context;

		// changement obligatoire de soundfont DONC de synthétiseur :
		// commençons par nettoyer la mémoire
		console.log(" nouveau synthétiseur !");
		if (typeof window.synth != 'undefined'){
			window.synth.destroy();
		}
	    const synth = new Synthetizer(context.destination, soundFontArrayBuffer);     // create the synthesizer
	   	await synth.isReady;
		console.log(" nouveau synthétiseur chargé !");
	   	window.synth = synth;

[spessasus]

Attaching the soundfont would be appreciated.

[ArouG]

"We don’t support that file type." :-))

[spessasus]

Compress it as zip.

[ArouG]

OK !

[ArouG]

File size too big: 25 MB ! :-((

[ArouG]

https://aroug.eu/Mykaraok/banques/OPL-3_FM_128M(Sound_Blaster_16).zip

[spessasus]

I've taken a look at the code and the soundfont and I can't reproduce the error.

It works fine 100% of the time.

Note that I had to change

soundFontArrayBuffer = await filefont.arrayBuffer(); // convert to array buffer,

to

let soundFontArrayBuffer = await filefont.arrayBuffer(); // convert to array buffer,

[ArouG]

Hi !! I've made changes in my code since my first post ... and I have never reproduce error ! I suppose the troubles went from "my old codes".
Thank for your answer : we can say this problem is solved !