Support .sfz files

[marchingband]

[marchingband]

https://www.polyphone-soundfonts.com/
https://sfzformat.com/software/tools/

[marchingband]

attn #56
in this file:
https://github.com/marchingband/wvr_ui/blob/xml/src/helpers/sfz.js
I have a first try at implementing this
beta binary is here: https://github.com/marchingband/wvr_binaries/blob/main/wvr_xml/wvr_xml_rc.ino.bin

it supports:

pitch_keycenter
lokey
hikey
(these 3 work to interpolate pitches)
hivel
(this one sets the upper breakpoint for racks)
key
loop_mode
(you can set 'loop_sustain' for ASR_LOOP or "one_shot" for ignore note off)
volume
group
(this is exclusive group or mute group (0 == none))
reverb_wet
disto_wet
pan
loop_start
loop_end
polyphony_stealing
(this is the priority)
sample

file button: you can select all the sound files and the .sfz using shift or command-click, command-A, etc from the file dialog
folder button: you can select a folder with all that stuff inside, nesting directories is ok, they will all be found.
There is a button at the bottom of the global menu in the WEB GUI for each way.

[Gnuv]

I switch to github, maybe it’s more convenient for you.

Some bugs that I found :

• The last < region > doesn’t load
• Numbers work alone (like key=0), but note names works only when they are followed by another opcode (like key=c1 volume=1)
• Note names with a minus doesn’t work (like key=c-1)

pitch_keycenter= lokey= hikey= and hivel= seems to work well :)

[marchingband]

Unfortunately these must be problems with the sfz parsing library I am using, which doesn't have a github.
https://www.npmjs.com/package/sfz-parser

It's a regex parser, I hate regex, but it's MIT licensed so we can modify and republish it. I will take a look.

[marchingband]

function transform(sfzText) {
    sfzText = sfzText.replace(/\/\/.*$/gm, "");
    return matchAll(sfzText, /<(.*?)>\s([\s\S]*?)((?=<)|\Z)/gm).map(function (res) {
        var kvs = matchAll(res[2], /(.*?)=(.*?)($|\s(?=.*?=))/gm);
        var prop = {};
        kvs.forEach(function (kv) {
            prop[kv[1].replace(/\s/gm, "")] = /^\d*$/g.test(kv[2])
                ? Number(kv[2])
                : kv[2];
            if (/^[a-gA-G]#?\d$/.test(kv[2]))
                prop[kv[1]] = name2num(kv[2]);
        });
        if (prop.sample)
            prop.sample = prop.sample.replace(/\\/g, "/");
        return {
            type: res[1],
            property: prop,
        };
    });
}

obvious right?

[Gnuv]

Whaou !

For now, we can put a blank < region > at the end and use MIDI numbers instead of note names ^^

[marchingband]

Ok, good to know.
its possible I will end up writing my own parser anyhow, because I can't find a JavaScript parser for decentSampler. They are very similar and it would only take a few minutes to adapt a parser for one to the other.