108 lines
2.8 KiB
JavaScript
108 lines
2.8 KiB
JavaScript
/* This file runs after the audio system is initiated */
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var cries = {};
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Object.readonly(audio, 'samplerate');
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Object.readonly(audio, 'channels');
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Object.readonly(audio, 'buffer_frames');
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audio.play = function(file,bus = audio.bus.master) {
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file = Resources.find_sound(file);
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if (!file) {
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console.error(`Cannot play sound ${file}: does not exist.`);
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return;
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}
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var src = audio.dsp.source(file);
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src.plugin(bus);
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src.guid = prosperon.guid();
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return src;
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}
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audio.bus = {};
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audio.bus.master = dspsound.master();
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audio.dsp = {};
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audio.dsp = dspsound;
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audio.cry = function(file)
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{
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var player = audio.play(file);
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player.guid = prosperon.guid();
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cries[player.guid] = player;
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player.ended = function() { delete cries[player.guid]; player = undefined; }
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return player.ended;
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}
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var killer = Register.appupdate.register(function() {
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for (var i in cries) {
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var cry = cries[i];
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if (!cry.ended) continue;
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if (cry.frame < cry.lastframe || cry.frame === cry.frames())
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cry.ended();
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cry.lastframe = cry.frame;
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}
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});
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var song;
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audio.music = function(file, fade = 0) {
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if (!fade) {
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song = audio.play(file);
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return;
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}
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var temp = audio.play(file);
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temp.volume = 0;
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var temp2 = song;
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tween(temp, 'volume', 1, fade);
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tween(temp2, 'volume', 0, fade);
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song = temp;
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}
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audio.dsp.mix = function(to) {
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var n = audio.dsp.mix();
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if (to) n.plugin(to);
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return n;
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};
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audio.dsp.allpass = function(secs, decay) {
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var composite = {};
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var fwd = audio.dsp.fwd_delay(secs,-decay);
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var fbk = audio.dsp.delay(secs,decay);
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composite.id = fwd.id;
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composite.plugin = composite.plugin.bind(fbk);
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composite.unplug = dsp_node.unplug.bind(fbk);
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fwd.plugin(fbk);
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return composite;
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}
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audio.dsp.doc = {
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delay: "Delays the input by secs, multiplied by decay",
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fwd_delay: "Forward feedback delays the input by secs, multiplied by decay",
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allpass: "Composite node of a delay and fwd_delay",
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lpf: "Low pass filter at a given frequency",
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hpf: "High pass filter at a given frequency",
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midi: "A source node for a midi file with a given soundfont file",
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crush: "Bitcrush the input to a given rate and bit depth",
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limiter: "Limit audio to ceil with pleasent rolloff",
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noise_gate: "Do not pass audio below the given floor",
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pitchshift: "Shift sound by octaves",
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noise: "Plain randon noise",
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pink: "Pink noise",
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red: "Red noise"
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};
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Object.mixin(audio.bus.master.__proto__, {
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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 volume() { return this.gain; },
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set volume(x) { this.gain = x; },
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});
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/*Object.mixin(audio.dsp.source().__proto__, {
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length() { return this.frames()/audio.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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*/
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return {audio};
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