wam-community
Version:
A collection of prebuilt Web Audio Modules ready for use
921 lines (809 loc) • 39.5 kB
JavaScript
/*
Code generated with Faust version 2.40.12
Compilation options: -lang wasm-ib -cn StereoFreqShifter -es 1 -mcd 16 -single -ftz 2
*/
function getJSONStereoFreqShifter() {
return '{"name": "StereoFreqShifter","filename": "StereoFreqShifter.dsp","version": "2.40.12","compile_options": "-lang wasm-ib -cn StereoFreqShifter -es 1 -mcd 16 -single -ftz 2","include_pathnames": ["/usr/local/share/faust","/usr/local/share/faust","/usr/share/faust",".","/tmp/sessions/AB0697B9188D36EA816678966384D728E2BDCEDE/web/wap"],"size": 168,"inputs": 2,"outputs": 2,"meta": [ { "author": "Oli Larkin (contact@olilarkin.co.uk)" },{ "basics_lib_name": "Faust Basic Element Library" },{ "basics_lib_version": "0.6" },{ "compilation_options": "-single -scal -I libraries/ -I project/ -lang wasm" },{ "compile_options": "-lang wasm-ib -cn StereoFreqShifter -es 1 -mcd 16 -single -ftz 2" },{ "copyright": "Oliver Larkin" },{ "description": "Stereo Frequency Shifting" },{ "filename": "StereoFreqShifter.dsp" },{ "library_path0": "/libraries/stdfaust.lib" },{ "library_path1": "/libraries/basics.lib" },{ "library_path2": "/libraries/maths.lib" },{ "library_path3": "/libraries/platform.lib" },{ "library_path4": "/libraries/signals.lib" },{ "licence": "GPL" },{ "maths_lib_author": "GRAME" },{ "maths_lib_copyright": "GRAME" },{ "maths_lib_license": "LGPL with exception" },{ "maths_lib_name": "Faust Math Library" },{ "maths_lib_version": "2.5" },{ "name": "StereoFreqShifter" },{ "platform_lib_name": "Generic Platform Library" },{ "platform_lib_version": "0.2" },{ "signals_lib_name": "Faust Signal Routing Library" },{ "signals_lib_version": "0.1" },{ "version": "0.1" }],"ui": [ {"type": "vgroup","label": "StereoFreqShifter","items": [ {"type": "hslider","label": "L-ROffset","shortname": "L_ROffset","address": "/StereoFreqShifter/L-ROffset","index": 132,"meta": [{ "OWL": "PARAMETER_C" },{ "style": "knob" }],"init": 0,"min": 0,"max": 1,"step": 1e-05},{"type": "hslider","label": "Mix","shortname": "Mix","address": "/StereoFreqShifter/Mix","index": 28,"meta": [{ "OWL": "PARAMETER_D" },{ "style": "knob" }],"init": 0.5,"min": 0,"max": 1,"step": 0.01},{"type": "hslider","label": "ShiftScalar","shortname": "ShiftScalar","address": "/StereoFreqShifter/ShiftScalar","index": 68,"meta": [{ "OWL": "PARAMETER_B" },{ "style": "knob" }],"init": 1,"min": 1,"max": 100,"step": 0.1},{"type": "hslider","label": "Shift","shortname": "Shift","address": "/StereoFreqShifter/Shift","index": 72,"meta": [{ "OWL": "PARAMETER_A" },{ "style": "knob" },{ "unit": "hz" }],"init": 0,"min": -1,"max": 1,"step": 0.001},{"type": "checkbox","label": "bypass","shortname": "bypass","address": "/StereoFreqShifter/bypass","index": 8}]}]}';
}
function getBase64CodeStereoFreqShifter() {
return "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";
}
/*
faust2wasm: GRAME 2017-2019
*/
("use strict");
if (typeof AudioWorkletNode === "undefined") {
alert("AudioWorklet is not supported in this browser !");
}
class StereoFreqShifterNode extends AudioWorkletNode {
constructor(context, baseURL, options) {
super(context, "StereoFreqShifter", options);
this.baseURL = baseURL;
this.json = options.processorOptions.json;
this.json_object = JSON.parse(this.json);
// JSON parsing functions
this.parse_ui = function (ui, obj) {
for (var i = 0; i < ui.length; i++) {
this.parse_group(ui[i], obj);
}
};
this.parse_group = function (group, obj) {
if (group.items) {
this.parse_items(group.items, obj);
}
};
this.parse_items = function (items, obj) {
for (var i = 0; i < items.length; i++) {
this.parse_item(items[i], obj);
}
};
this.parse_item = function (item, obj) {
if (item.type === "vgroup" || item.type === "hgroup" || item.type === "tgroup") {
this.parse_items(item.items, obj);
} else if (item.type === "hbargraph" || item.type === "vbargraph") {
// Keep bargraph adresses
obj.outputs_items.push(item.address);
} else if (
item.type === "vslider" ||
item.type === "hslider" ||
item.type === "button" ||
item.type === "checkbox" ||
item.type === "nentry"
) {
// Keep inputs adresses
obj.inputs_items.push(item.address);
obj.descriptor.push(item);
// Decode MIDI
if (item.meta !== undefined) {
for (var i = 0; i < item.meta.length; i++) {
if (item.meta[i].midi !== undefined) {
if (item.meta[i].midi.trim() === "pitchwheel") {
obj.fPitchwheelLabel.push({
path: item.address,
min: parseFloat(item.min),
max: parseFloat(item.max),
});
} else if (item.meta[i].midi.trim().split(" ")[0] === "ctrl") {
obj.fCtrlLabel[parseInt(item.meta[i].midi.trim().split(" ")[1])].push({
path: item.address,
min: parseFloat(item.min),
max: parseFloat(item.max),
});
}
}
}
}
// Define setXXX/getXXX, replacing '/c' with 'C' everywhere in the string
var set_name = "set" + item.address;
var get_name = "get" + item.address;
set_name = set_name.replace(/\/./g, (x) => {
return x.substr(1, 1).toUpperCase();
});
get_name = get_name.replace(/\/./g, (x) => {
return x.substr(1, 1).toUpperCase();
});
obj[set_name] = (val) => {
obj.setParamValue(item.address, val);
};
obj[get_name] = () => {
return obj.getParamValue(item.address);
};
//console.log(set_name);
//console.log(get_name);
}
};
this.output_handler = null;
// input/output items
this.inputs_items = [];
this.outputs_items = [];
this.descriptor = [];
// MIDI
this.fPitchwheelLabel = [];
this.fCtrlLabel = new Array(128);
for (var i = 0; i < this.fCtrlLabel.length; i++) {
this.fCtrlLabel[i] = [];
}
// Parse UI
this.parse_ui(this.json_object.ui, this);
// Set message handler
this.port.onmessage = this.handleMessage.bind(this);
try {
if (this.parameters) this.parameters.forEach((p) => (p.automationRate = "k-rate"));
} catch (e) {}
}
// To be called by the message port with messages coming from the processor
handleMessage(event) {
var msg = event.data;
if (this.output_handler) {
this.output_handler(msg.path, msg.value);
}
}
// Public API
/**
* Destroy the node, deallocate resources.
*/
destroy() {
this.port.postMessage({ type: "destroy" });
this.port.close();
}
/**
* Returns a full JSON description of the DSP.
*/
getJSON() {
return this.json;
}
// For WAP
async getMetadata() {
return new Promise((resolve) => {
let real_url = this.baseURL === "" ? "main.json" : this.baseURL + "/main.json";
fetch(real_url)
.then((responseJSON) => {
return responseJSON.json();
})
.then((json) => {
resolve(json);
});
});
}
/**
* Set the control value at a given path.
*
* @param path - a path to the control
* @param val - the value to be set
*/
setParamValue(path, val) {
// Needed for sample accurate control
this.parameters.get(path).setValueAtTime(val, 0);
}
// For WAP
setParam(path, val) {
// Needed for sample accurate control
this.parameters.get(path).setValueAtTime(val, 0);
}
/**
* Get the control value at a given path.
*
* @return the current control value
*/
getParamValue(path) {
return this.parameters.get(path).value;
}
// For WAP
getParam(path) {
return this.parameters.get(path).value;
}
/**
* Setup a control output handler with a function of type (path, value)
* to be used on each generated output value. This handler will be called
* each audio cycle at the end of the 'compute' method.
*
* @param handler - a function of type function(path, value)
*/
setOutputParamHandler(handler) {
this.output_handler = handler;
}
/**
* Get the current output handler.
*/
getOutputParamHandler() {
return this.output_handler;
}
getNumInputs() {
return parseInt(this.json_object.inputs);
}
getNumOutputs() {
return parseInt(this.json_object.outputs);
}
// For WAP
inputChannelCount() {
return parseInt(this.json_object.inputs);
}
outputChannelCount() {
return parseInt(this.json_object.outputs);
}
/**
* Returns an array of all input paths (to be used with setParamValue/getParamValue)
*/
getParams() {
return this.inputs_items;
}
// For WAP
getDescriptor() {
var desc = {};
for (const item in this.descriptor) {
if (this.descriptor.hasOwnProperty(item)) {
if (this.descriptor[item].label != "bypass") {
desc = Object.assign(
{
[this.descriptor[item].label]: {
minValue: this.descriptor[item].min,
maxValue: this.descriptor[item].max,
defaultValue: this.descriptor[item].init,
},
},
desc
);
}
}
}
return desc;
}
/**
* Control change
*
* @param channel - the MIDI channel (0..15, not used for now)
* @param ctrl - the MIDI controller number (0..127)
* @param value - the MIDI controller value (0..127)
*/
ctrlChange(channel, ctrl, value) {
if (this.fCtrlLabel[ctrl] !== []) {
for (var i = 0; i < this.fCtrlLabel[ctrl].length; i++) {
var path = this.fCtrlLabel[ctrl][i].path;
this.setParamValue(
path,
StereoFreqShifterNode.remap(value, 0, 127, this.fCtrlLabel[ctrl][i].min, this.fCtrlLabel[ctrl][i].max)
);
if (this.output_handler) {
this.output_handler(path, this.getParamValue(path));
}
}
}
}
/**
* PitchWeel
*
* @param channel - the MIDI channel (0..15, not used for now)
* @param value - the MIDI controller value (0..16383)
*/
pitchWheel(channel, wheel) {
for (var i = 0; i < this.fPitchwheelLabel.length; i++) {
var pw = this.fPitchwheelLabel[i];
this.setParamValue(pw.path, StereoFreqShifterNode.remap(wheel, 0, 16383, pw.min, pw.max));
if (this.output_handler) {
this.output_handler(pw.path, this.getParamValue(pw.path));
}
}
}
/**
* Generic MIDI message handler.
*/
midiMessage(data) {
var cmd = data[0] >> 4;
var channel = data[0] & 0xf;
var data1 = data[1];
var data2 = data[2];
if (channel === 9) {
return;
} else if (cmd === 11) {
this.ctrlChange(channel, data1, data2);
} else if (cmd === 14) {
this.pitchWheel(channel, data2 * 128.0 + data1);
}
}
// For WAP
onMidi(data) {
midiMessage(data);
}
/**
* @returns {Object} describes the path for each available param and its current value
*/
async getState() {
var params = new Object();
for (let i = 0; i < this.getParams().length; i++) {
Object.assign(params, { [this.getParams()[i]]: `${this.getParam(this.getParams()[i])}` });
}
return new Promise((resolve) => {
resolve(params);
});
}
/**
* Sets each params with the value indicated in the state object
* @param {Object} state
*/
async setState(state) {
return new Promise((resolve) => {
for (const param in state) {
if (state.hasOwnProperty(param)) this.setParam(param, state[param]);
}
try {
this.gui.setAttribute("state", JSON.stringify(state));
} catch (error) {
console.warn("Plugin without gui or GUI not defined", error);
}
resolve(state);
});
}
/**
* A different call closer to the preset management
* @param {Object} patch to assign as a preset to the node
*/
setPatch(patch) {
this.setState(this.presets[patch]);
}
static remap(v, mn0, mx0, mn1, mx1) {
return ((1.0 * (v - mn0)) / (mx0 - mn0)) * (mx1 - mn1) + mn1;
}
}
// Factory class
export default class StereoFreqShifter {
static fWorkletProcessors;
/**
* Factory constructor.
*
* @param context - the audio context
* @param baseURL - the baseURL of the plugin folder
*/
constructor(context, baseURL = "") {
console.log("baseLatency " + context.baseLatency);
console.log("outputLatency " + context.outputLatency);
console.log("sampleRate " + context.sampleRate);
this.context = context;
this.baseURL = baseURL;
this.pathTable = [];
this.fWorkletProcessors = this.fWorkletProcessors || [];
}
heap2Str(buf) {
let str = "";
let i = 0;
while (buf[i] !== 0) {
str += String.fromCharCode(buf[i++]);
}
return str;
}
/**
* Load additionnal resources to prepare the custom AudioWorkletNode. Returns a promise to be used with the created node.
*/
async load() {
try {
const importObject = {
env: {
memoryBase: 0,
tableBase: 0,
_abs: Math.abs,
// Float version
_acosf: Math.acos,
_asinf: Math.asin,
_atanf: Math.atan,
_atan2f: Math.atan2,
_ceilf: Math.ceil,
_cosf: Math.cos,
_expf: Math.exp,
_floorf: Math.floor,
_fmodf: (x, y) => x % y,
_logf: Math.log,
_log10f: Math.log10,
_max_f: Math.max,
_min_f: Math.min,
_remainderf: (x, y) => x - Math.round(x / y) * y,
_powf: Math.pow,
_roundf: Math.fround,
_sinf: Math.sin,
_sqrtf: Math.sqrt,
_tanf: Math.tan,
_acoshf: Math.acosh,
_asinhf: Math.asinh,
_atanhf: Math.atanh,
_coshf: Math.cosh,
_sinhf: Math.sinh,
_tanhf: Math.tanh,
_isnanf: Number.isNaN,
_isinff: function (x) {
return !isFinite(x);
},
_copysignf: function (x, y) {
return Math.sign(x) === Math.sign(y) ? x : -x;
},
// Double version
_acos: Math.acos,
_asin: Math.asin,
_atan: Math.atan,
_atan2: Math.atan2,
_ceil: Math.ceil,
_cos: Math.cos,
_exp: Math.exp,
_floor: Math.floor,
_fmod: (x, y) => x % y,
_log: Math.log,
_log10: Math.log10,
_max_: Math.max,
_min_: Math.min,
_remainder: (x, y) => x - Math.round(x / y) * y,
_pow: Math.pow,
_round: Math.fround,
_sin: Math.sin,
_sqrt: Math.sqrt,
_tan: Math.tan,
_acosh: Math.acosh,
_asinh: Math.asinh,
_atanh: Math.atanh,
_cosh: Math.cosh,
_sinh: Math.sinh,
_tanh: Math.tanh,
_isnan: Number.isNaN,
_isinf: function (x) {
return !isFinite(x);
},
_copysign: function (x, y) {
return Math.sign(x) === Math.sign(y) ? x : -x;
},
table: new WebAssembly.Table({ initial: 0, element: "anyfunc" }),
},
};
let real_url = this.baseURL === "" ? "StereoFreqShifter.wasm" : this.baseURL + "/StereoFreqShifter.wasm";
const dspFile = await fetch(real_url);
const dspBuffer = await dspFile.arrayBuffer();
const dspModule = await WebAssembly.compile(dspBuffer);
const dspInstance = await WebAssembly.instantiate(dspModule, importObject);
let HEAPU8 = new Uint8Array(dspInstance.exports.memory.buffer);
let json = this.heap2Str(HEAPU8);
let json_object = JSON.parse(json);
let options = { wasm_module: dspModule, json: json };
if (this.fWorkletProcessors.indexOf(name) === -1) {
try {
let re = /JSON_STR/g;
let StereoFreqShifterProcessorString1 = StereoFreqShifterProcessorString.replace(re, json);
let real_url = window.URL.createObjectURL(
new Blob([StereoFreqShifterProcessorString1], { type: "text/javascript" })
);
await this.context.audioWorklet.addModule(real_url);
// Keep the DSP name
console.log("Keep the DSP name");
this.fWorkletProcessors.push(name);
} catch (e) {
console.error(e);
console.error("Faust " + this.name + " cannot be loaded or compiled");
return null;
}
}
this.node = new StereoFreqShifterNode(this.context, this.baseURL, {
numberOfInputs: parseInt(json_object.inputs) > 0 ? 1 : 0,
numberOfOutputs: parseInt(json_object.outputs) > 0 ? 1 : 0,
channelCount: Math.max(1, parseInt(json_object.inputs)),
outputChannelCount: [parseInt(json_object.outputs)],
channelCountMode: "explicit",
channelInterpretation: "speakers",
processorOptions: options,
});
this.node.onprocessorerror = () => {
console.log("An error from StereoFreqShifter-processor was detected.");
};
return this.node;
} catch (e) {
console.error(e);
console.error("Faust " + this.name + " cannot be loaded or compiled");
return null;
}
}
async loadGui() {
return new Promise((resolve, reject) => {
try {
// DO THIS ONLY ONCE. If another instance has already been added, do not add the html file again
let real_url = this.baseURL === "" ? "main.html" : this.baseURL + "/main.html";
if (!this.linkExists(real_url)) {
// LINK DOES NOT EXIST, let's add it to the document
var link = document.createElement("link");
link.rel = "import";
link.href = real_url;
document.head.appendChild(link);
link.onload = (e) => {
// the file has been loaded, instanciate GUI
// and get back the HTML elem
// HERE WE COULD REMOVE THE HARD CODED NAME
var element = createStereoFreqShifterGUI(this.node);
resolve(element);
};
} else {
// LINK EXIST, WE AT LEAST CREATED ONE INSTANCE PREVIOUSLY
// so we can create another instance
var element = createStereoFreqShifterGUI(this.node);
resolve(element);
}
} catch (e) {
console.log(e);
reject(e);
}
});
}
linkExists(url) {
return document.querySelectorAll(`link[href="${url}"]`).length > 0;
}
}
// Template string for AudioWorkletProcessor
let StereoFreqShifterProcessorString = `
'use strict';
// Monophonic Faust DSP
class StereoFreqShifterProcessor extends AudioWorkletProcessor {
// JSON parsing functions
static parse_ui(ui, obj, callback)
{
for (var i = 0; i < ui.length; i++) {
StereoFreqShifterProcessor.parse_group(ui[i], obj, callback);
}
}
static parse_group(group, obj, callback)
{
if (group.items) {
StereoFreqShifterProcessor.parse_items(group.items, obj, callback);
}
}
static parse_items(items, obj, callback)
{
for (var i = 0; i < items.length; i++) {
callback(items[i], obj, callback);
}
}
static parse_item1(item, obj, callback)
{
if (item.type === "vgroup"
|| item.type === "hgroup"
|| item.type === "tgroup") {
StereoFreqShifterProcessor.parse_items(item.items, obj, callback);
} else if (item.type === "hbargraph"
|| item.type === "vbargraph") {
// Nothing
} else if (item.type === "vslider"
|| item.type === "hslider"
|| item.type === "button"
|| item.type === "checkbox"
|| item.type === "nentry") {
obj.push({ name: item.address,
defaultValue: item.init,
minValue: item.min,
maxValue: item.max });
}
}
static parse_item2(item, obj, callback)
{
if (item.type === "vgroup"
|| item.type === "hgroup"
|| item.type === "tgroup") {
StereoFreqShifterProcessor.parse_items(item.items, obj, callback);
} else if (item.type === "hbargraph"
|| item.type === "vbargraph") {
// Keep bargraph adresses
obj.outputs_items.push(item.address);
obj.pathTable[item.address] = parseInt(item.index);
} else if (item.type === "vslider"
|| item.type === "hslider"
|| item.type === "button"
|| item.type === "checkbox"
|| item.type === "nentry") {
// Keep inputs adresses
obj.inputs_items.push(item.address);
obj.pathTable[item.address] = parseInt(item.index);
}
}
static get parameterDescriptors()
{
// Analyse JSON to generate AudioParam parameters
var params = [];
StereoFreqShifterProcessor.parse_ui(JSON.parse(\`JSON_STR\`).ui, params, StereoFreqShifterProcessor.parse_item1);
return params;
}
constructor(options)
{
super(options);
this.running = true;
const importObject = {
env: {
memoryBase: 0,
tableBase: 0,
// Integer version
_abs: Math.abs,
// Float version
_acosf: Math.acos,
_asinf: Math.asin,
_atanf: Math.atan,
_atan2f: Math.atan2,
_ceilf: Math.ceil,
_cosf: Math.cos,
_expf: Math.exp,
_floorf: Math.floor,
_fmodf: function(x, y) { return x % y; },
_logf: Math.log,
_log10f: Math.log10,
_max_f: Math.max,
_min_f: Math.min,
_remainderf: function(x, y) { return x - Math.round(x/y) * y; },
_powf: Math.pow,
_roundf: Math.fround,
_sinf: Math.sin,
_sqrtf: Math.sqrt,
_tanf: Math.tan,
_acoshf: Math.acosh,
_asinhf: Math.asinh,
_atanhf: Math.atanh,
_coshf: Math.cosh,
_sinhf: Math.sinh,
_tanhf: Math.tanh,
// Double version
_acos: Math.acos,
_asin: Math.asin,
_atan: Math.atan,
_atan2: Math.atan2,
_ceil: Math.ceil,
_cos: Math.cos,
_exp: Math.exp,
_floor: Math.floor,
_fmod: function(x, y) { return x % y; },
_log: Math.log,
_log10: Math.log10,
_max_: Math.max,
_min_: Math.min,
_remainder:function(x, y) { return x - Math.round(x/y) * y; },
_pow: Math.pow,
_round: Math.fround,
_sin: Math.sin,
_sqrt: Math.sqrt,
_tan: Math.tan,
_acosh: Math.acosh,
_asinh: Math.asinh,
_atanh: Math.atanh,
_cosh: Math.cosh,
_sinh: Math.sinh,
_tanh: Math.tanh,
table: new WebAssembly.Table({ initial: 0, element: 'anyfunc' })
}
};
this.StereoFreqShifter_instance = new WebAssembly.Instance(options.processorOptions.wasm_module, importObject);
this.json_object = JSON.parse(options.processorOptions.json);
this.output_handler = function(path, value) { this.port.postMessage({ path: path, value: value }); };
this.ins = null;
this.outs = null;
this.dspInChannnels = [];
this.dspOutChannnels = [];
this.numIn = parseInt(this.json_object.inputs);
this.numOut = parseInt(this.json_object.outputs);
// Memory allocator
this.ptr_size = 4;
this.sample_size = 4;
this.integer_size = 4;
this.factory = this.StereoFreqShifter_instance.exports;
this.HEAP = this.StereoFreqShifter_instance.exports.memory.buffer;
this.HEAP32 = new Int32Array(this.HEAP);
this.HEAPF32 = new Float32Array(this.HEAP);
// Warning: keeps a ref on HEAP in Chrome and prevent proper GC
//console.log(this.HEAP);
//console.log(this.HEAP32);
//console.log(this.HEAPF32);
// bargraph
this.outputs_timer = 5;
this.outputs_items = [];
// input items
this.inputs_items = [];
// Start of HEAP index
// DSP is placed first with index 0. Audio buffer start at the end of DSP.
this.audio_heap_ptr = parseInt(this.json_object.size);
// Setup pointers offset
this.audio_heap_ptr_inputs = this.audio_heap_ptr;
this.audio_heap_ptr_outputs = this.audio_heap_ptr_inputs + (this.numIn * this.ptr_size);
// Setup buffer offset
this.audio_heap_inputs = this.audio_heap_ptr_outputs + (this.numOut * this.ptr_size);
this.audio_heap_outputs = this.audio_heap_inputs + (this.numIn * NUM_FRAMES * this.sample_size);
// Start of DSP memory : DSP is placed first with index 0
this.dsp = 0;
this.pathTable = [];
// Send output values to the AudioNode
this.update_outputs = function ()
{
if (this.outputs_items.length > 0 && this.output_handler && this.outputs_timer-- === 0) {
this.outputs_timer = 5;
for (var i = 0; i < this.outputs_items.length; i++) {
this.output_handler(this.outputs_items[i], this.HEAPF32[this.pathTable[this.outputs_items[i]] >> 2]);
}
}
}
this.initAux = function ()
{
var i;
if (this.numIn > 0) {
this.ins = this.audio_heap_ptr_inputs;
for (i = 0; i < this.numIn; i++) {
this.HEAP32[(this.ins >> 2) + i] = this.audio_heap_inputs + ((NUM_FRAMES * this.sample_size) * i);
}
// Prepare Ins buffer tables
var dspInChans = this.HEAP32.subarray(this.ins >> 2, (this.ins + this.numIn * this.ptr_size) >> 2);
for (i = 0; i < this.numIn; i++) {
this.dspInChannnels[i] = this.HEAPF32.subarray(dspInChans[i] >> 2, (dspInChans[i] + NUM_FRAMES * this.sample_size) >> 2);
}
}
if (this.numOut > 0) {
this.outs = this.audio_heap_ptr_outputs;
for (i = 0; i < this.numOut; i++) {
this.HEAP32[(this.outs >> 2) + i] = this.audio_heap_outputs + ((NUM_FRAMES * this.sample_size) * i);
}
// Prepare Out buffer tables
var dspOutChans = this.HEAP32.subarray(this.outs >> 2, (this.outs + this.numOut * this.ptr_size) >> 2);
for (i = 0; i < this.numOut; i++) {
this.dspOutChannnels[i] = this.HEAPF32.subarray(dspOutChans[i] >> 2, (dspOutChans[i] + NUM_FRAMES * this.sample_size) >> 2);
}
}
// Parse UI
StereoFreqShifterProcessor.parse_ui(this.json_object.ui, this, StereoFreqShifterProcessor.parse_item2);
// Init DSP
this.factory.init(this.dsp, sampleRate); // 'sampleRate' is defined in AudioWorkletGlobalScope
}
this.setParamValue = function (path, val)
{
this.HEAPF32[this.pathTable[path] >> 2] = val;
}
this.getParamValue = function (path)
{
return this.HEAPF32[this.pathTable[path] >> 2];
}
// Init resulting DSP
this.initAux();
}
process(inputs, outputs, parameters)
{
var input = inputs[0];
var output = outputs[0];
// Check inputs
if (this.numIn > 0 && (!input || !input[0] || input[0].length === 0)) {
//console.log("Process input error");
return true;
}
// Check outputs
if (this.numOut > 0 && (!output || !output[0] || output[0].length === 0)) {
//console.log("Process output error");
return true;
}
// Copy inputs
if (input !== undefined) {
for (var chan = 0; chan < Math.min(this.numIn, input.length); ++chan) {
var dspInput = this.dspInChannnels[chan];
dspInput.set(input[chan]);
}
}
/*
TODO: sample accurate control change is not yet handled
When no automation occurs, params[i][1] has a length of 1,
otherwise params[i][1] has a length of NUM_FRAMES with possible control change each sample
*/
// Update controls
for (const path in parameters) {
const paramArray = parameters[path];
this.setParamValue(path, paramArray[0]);
}
// Compute
try {
this.factory.compute(this.dsp, NUM_FRAMES, this.ins, this.outs);
} catch(e) {
console.log("ERROR in compute (" + e + ")");
}
// Update bargraph
this.update_outputs();
// Copy outputs
if (output !== undefined) {
for (var chan = 0; chan < Math.min(this.numOut, output.length); ++chan) {
var dspOutput = this.dspOutChannnels[chan];
output[chan].set(dspOutput);
}
}
return this.running;
}
handleMessage(event)
{
var msg = event.data;
switch (msg.type) {
case "destroy": this.running = false; break;
}
}
}
// Globals
const NUM_FRAMES = 128;
try {
registerProcessor('StereoFreqShifter', StereoFreqShifterProcessor);
} catch (error) {
console.warn(error);
}
`;
const dspName = "StereoFreqShifter";
// WAP factory or npm package module
if (typeof module === "undefined") {
window.StereoFreqShifter = StereoFreqShifter;
window.FaustStereoFreqShifter = StereoFreqShifter;
window[dspName] = StereoFreqShifter;
} else {
module.exports = { StereoFreqShifter };
}