127 lines
3.1 KiB
JavaScript
127 lines
3.1 KiB
JavaScript
var dsp_node = {
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make(id) {
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var n = Object.create(this);
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n.id = id;
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return n;
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},
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id: undefined,
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get volume() { return cmd(175, this.id); },
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set volume(x) { x = Math.clamp(x,0,1); cmd(176, this.id,x); },
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get db() { return 20*Math.log10(Math.abs(this.volume)); },
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set db(x) { x = Math.clamp(x,-100,0); this.volume = Math.pow(10, x/20); },
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get pan() { return cmd(178,this.id); },
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set pan(x) { x = Math.clamp(x,-1,1); cmd(179,this.id,x); },
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off(t) { cmd(183, this.id, t); }, /* True to turn off */
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bypass(t) { cmd(184, this.id, t); }, /* True to bypass filter effect */
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unplug() { cmd(164, this.id); },
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plugin(to) { cmd(177, this.id, to.id); },
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kill() {
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if (this._dead) return;
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this._dead = true;
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cmd(193, this.id);
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},
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end() {},
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};
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var dsp_source = Object.copy(dsp_node,{
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end(){},
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get loop() { return cmd(194,this.id); },
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set loop(x) { cmd(195,this.id, x);},
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get timescale() { return cmd(201,this.id); },
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set timescale(x) { cmd(202,this.id,x); },
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get frame() { return cmd(196,this.id); },
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set frame(x) { cmd(199, this.id, x); },
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frames() { return cmd(197,this.id); },
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length() { return this.frames()/Sound.samplerate(); },
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time() { return this.frame/Sound.samplerate(); },
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pct() { return this.time()/this.length(); },
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});
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var Sound = {
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bus: {},
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samplerate() { return cmd(198); },
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sounds: [], /* array of loaded sound files */
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play(file, bus) {
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if (!IO.exists(file)) {
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Log.error(`Cannot play sound ${file}: does not exist.`);
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return;
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}
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var src = DSP.source(file);
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bus ??= Sound.bus.master;
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src.plugin(bus);
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return src;
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},
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music(midi, sf) {
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cmd(13, midi, sf);
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},
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};
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var DSP = {
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mix(to) {
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var n = dsp_node.make(cmd(181));
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if (to) n.plugin(to);
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return n;
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},
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source(path) {
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var src = Object.create(dsp_source);
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src.id = cmd(182,path,src);
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return src;
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},
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delay(secs,decay) {
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return dsp_node.make(cmd(185, secs, decay));
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},
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fwd_delay(secs, decay) {
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return dsp_node.make(cmd(207,secs,decay));
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},
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allpass(secs, decay) {
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var fwd = DSP.fwd_delay(secs,-decay);
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var fbk = DSP.delay(secs,decay);
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fwd.plugin(fbk);
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},
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lpf(f) {
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return dsp_node.make(cmd(186,f));
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},
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hpf(f) {
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return dsp_node.make(cmd(187,f));
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},
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mod(path) {
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return dsp_node.make(cmd(188,path));
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},
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midi(midi,sf) {
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return dsp_node.make(cmd(206,midi,sf));
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},
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crush(rate, depth) {
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return dsp_node.make(cmd(189,rate,depth));
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},
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compressor() {
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return dsp_node.make(cmd(190));
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},
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limiter(ceil) {
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return dsp_node.make(cmd(191,ceil));
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},
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noise_gate(floor) {
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return dsp_node.make(cmd(192,floor));
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},
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pitchshift(octaves) {
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return dsp_node.make(cmd(200,octaves));
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},
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noise() {
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return dsp_node.make(cmd(203));
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},
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pink() {
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return dsp_node.make(cmd(204));
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},
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red() {
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return dsp_node.make(cmd(205));
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},
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};
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Sound.bus.master = dsp_node.make(cmd(180));
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Sound.master = Sound.bus.master;
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Sound.play.doc = "Play the given file once.";
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Sound.doc = {};
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Sound.doc.volume = "Set the master volume. 0 is no sound and 100 is loudest.";
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