You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
357 lines
13 KiB
JavaScript
357 lines
13 KiB
JavaScript
3 years ago
|
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Recorder = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
|
||
|
|
"use strict";
|
||
|
|
|
||
|
|
module.exports = require("./recorder").Recorder;
|
||
|
|
|
||
|
|
},{"./recorder":2}],2:[function(require,module,exports){
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
var _createClass = (function () {
|
||
|
|
function defineProperties(target, props) {
|
||
|
|
for (var i = 0; i < props.length; i++) {
|
||
|
|
var descriptor = props[i];descriptor.enumerable = descriptor.enumerable || false;descriptor.configurable = true;if ("value" in descriptor) descriptor.writable = true;Object.defineProperty(target, descriptor.key, descriptor);
|
||
|
|
}
|
||
|
|
}return function (Constructor, protoProps, staticProps) {
|
||
|
|
if (protoProps) defineProperties(Constructor.prototype, protoProps);if (staticProps) defineProperties(Constructor, staticProps);return Constructor;
|
||
|
|
};
|
||
|
|
})();
|
||
|
|
|
||
|
|
Object.defineProperty(exports, "__esModule", {
|
||
|
|
value: true
|
||
|
|
});
|
||
|
|
exports.Recorder = undefined;
|
||
|
|
|
||
|
|
var _inlineWorker = require('inline-worker');
|
||
|
|
|
||
|
|
var _inlineWorker2 = _interopRequireDefault(_inlineWorker);
|
||
|
|
|
||
|
|
function _interopRequireDefault(obj) {
|
||
|
|
return obj && obj.__esModule ? obj : { default: obj };
|
||
|
|
}
|
||
|
|
|
||
|
|
function _classCallCheck(instance, Constructor) {
|
||
|
|
if (!(instance instanceof Constructor)) {
|
||
|
|
throw new TypeError("Cannot call a class as a function");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
var Recorder = exports.Recorder = (function () {
|
||
|
|
function Recorder(source, cfg) {
|
||
|
|
var _this = this;
|
||
|
|
|
||
|
|
_classCallCheck(this, Recorder);
|
||
|
|
|
||
|
|
this.config = {
|
||
|
|
bufferLen: 4096,
|
||
|
|
numChannels: 2,
|
||
|
|
mimeType: 'audio/wav'
|
||
|
|
};
|
||
|
|
this.recording = false;
|
||
|
|
this.callbacks = {
|
||
|
|
getBuffer: [],
|
||
|
|
exportWAV: []
|
||
|
|
};
|
||
|
|
|
||
|
|
Object.assign(this.config, cfg);
|
||
|
|
this.context = source.context;
|
||
|
|
this.node = (this.context.createScriptProcessor || this.context.createJavaScriptNode).call(this.context, this.config.bufferLen, this.config.numChannels, this.config.numChannels);
|
||
|
|
|
||
|
|
this.node.onaudioprocess = function (e) {
|
||
|
|
if (!_this.recording) return;
|
||
|
|
|
||
|
|
var buffer = [];
|
||
|
|
for (var channel = 0; channel < _this.config.numChannels; channel++) {
|
||
|
|
buffer.push(e.inputBuffer.getChannelData(channel));
|
||
|
|
}
|
||
|
|
_this.worker.postMessage({
|
||
|
|
command: 'record',
|
||
|
|
buffer: buffer
|
||
|
|
});
|
||
|
|
};
|
||
|
|
|
||
|
|
source.connect(this.node);
|
||
|
|
this.node.connect(this.context.destination); //this should not be necessary
|
||
|
|
|
||
|
|
var self = {};
|
||
|
|
this.worker = new _inlineWorker2.default(function () {
|
||
|
|
var recLength = 0,
|
||
|
|
recBuffers = [],
|
||
|
|
sampleRate = undefined,
|
||
|
|
numChannels = undefined;
|
||
|
|
|
||
|
|
self.onmessage = function (e) {
|
||
|
|
switch (e.data.command) {
|
||
|
|
case 'init':
|
||
|
|
init(e.data.config);
|
||
|
|
break;
|
||
|
|
case 'record':
|
||
|
|
record(e.data.buffer);
|
||
|
|
break;
|
||
|
|
case 'exportWAV':
|
||
|
|
exportWAV(e.data.type);
|
||
|
|
break;
|
||
|
|
case 'getBuffer':
|
||
|
|
getBuffer();
|
||
|
|
break;
|
||
|
|
case 'clear':
|
||
|
|
clear();
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
function init(config) {
|
||
|
|
sampleRate = config.sampleRate;
|
||
|
|
numChannels = config.numChannels;
|
||
|
|
initBuffers();
|
||
|
|
}
|
||
|
|
|
||
|
|
function record(inputBuffer) {
|
||
|
|
for (var channel = 0; channel < numChannels; channel++) {
|
||
|
|
recBuffers[channel].push(inputBuffer[channel]);
|
||
|
|
}
|
||
|
|
recLength += inputBuffer[0].length;
|
||
|
|
}
|
||
|
|
|
||
|
|
function exportWAV(type) {
|
||
|
|
var buffers = [];
|
||
|
|
for (var channel = 0; channel < numChannels; channel++) {
|
||
|
|
buffers.push(mergeBuffers(recBuffers[channel], recLength));
|
||
|
|
}
|
||
|
|
var interleaved = undefined;
|
||
|
|
if (numChannels === 2) {
|
||
|
|
interleaved = interleave(buffers[0], buffers[1]);
|
||
|
|
} else {
|
||
|
|
interleaved = buffers[0];
|
||
|
|
}
|
||
|
|
var dataview = encodeWAV(interleaved);
|
||
|
|
var audioBlob = new Blob([dataview], { type: type });
|
||
|
|
|
||
|
|
self.postMessage({ command: 'exportWAV', data: audioBlob });
|
||
|
|
}
|
||
|
|
|
||
|
|
function getBuffer() {
|
||
|
|
var buffers = [];
|
||
|
|
for (var channel = 0; channel < numChannels; channel++) {
|
||
|
|
buffers.push(mergeBuffers(recBuffers[channel], recLength));
|
||
|
|
}
|
||
|
|
self.postMessage({ command: 'getBuffer', data: buffers });
|
||
|
|
}
|
||
|
|
|
||
|
|
function clear() {
|
||
|
|
recLength = 0;
|
||
|
|
recBuffers = [];
|
||
|
|
initBuffers();
|
||
|
|
}
|
||
|
|
|
||
|
|
function initBuffers() {
|
||
|
|
for (var channel = 0; channel < numChannels; channel++) {
|
||
|
|
recBuffers[channel] = [];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function mergeBuffers(recBuffers, recLength) {
|
||
|
|
var result = new Float32Array(recLength);
|
||
|
|
var offset = 0;
|
||
|
|
for (var i = 0; i < recBuffers.length; i++) {
|
||
|
|
result.set(recBuffers[i], offset);
|
||
|
|
offset += recBuffers[i].length;
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
function interleave(inputL, inputR) {
|
||
|
|
var length = inputL.length + inputR.length;
|
||
|
|
var result = new Float32Array(length);
|
||
|
|
|
||
|
|
var index = 0,
|
||
|
|
inputIndex = 0;
|
||
|
|
|
||
|
|
while (index < length) {
|
||
|
|
result[index++] = inputL[inputIndex];
|
||
|
|
result[index++] = inputR[inputIndex];
|
||
|
|
inputIndex++;
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
function floatTo16BitPCM(output, offset, input) {
|
||
|
|
for (var i = 0; i < input.length; i++, offset += 2) {
|
||
|
|
var s = Math.max(-1, Math.min(1, input[i]));
|
||
|
|
output.setInt16(offset, s < 0 ? s * 0x8000 : s * 0x7FFF, true);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function writeString(view, offset, string) {
|
||
|
|
for (var i = 0; i < string.length; i++) {
|
||
|
|
view.setUint8(offset + i, string.charCodeAt(i));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function encodeWAV(samples) {
|
||
|
|
var buffer = new ArrayBuffer(44 + samples.length * 2);
|
||
|
|
var view = new DataView(buffer);
|
||
|
|
|
||
|
|
/* RIFF identifier */
|
||
|
|
writeString(view, 0, 'RIFF');
|
||
|
|
/* RIFF chunk length */
|
||
|
|
view.setUint32(4, 36 + samples.length * 2, true);
|
||
|
|
/* RIFF type */
|
||
|
|
writeString(view, 8, 'WAVE');
|
||
|
|
/* format chunk identifier */
|
||
|
|
writeString(view, 12, 'fmt ');
|
||
|
|
/* format chunk length */
|
||
|
|
view.setUint32(16, 16, true);
|
||
|
|
/* sample format (raw) */
|
||
|
|
view.setUint16(20, 1, true);
|
||
|
|
/* channel count */
|
||
|
|
view.setUint16(22, numChannels, true);
|
||
|
|
/* sample rate */
|
||
|
|
view.setUint32(24, sampleRate, true);
|
||
|
|
/* byte rate (sample rate * block align) */
|
||
|
|
view.setUint32(28, sampleRate * 4, true);
|
||
|
|
/* block align (channel count * bytes per sample) */
|
||
|
|
view.setUint16(32, numChannels * 2, true);
|
||
|
|
/* bits per sample */
|
||
|
|
view.setUint16(34, 16, true);
|
||
|
|
/* data chunk identifier */
|
||
|
|
writeString(view, 36, 'data');
|
||
|
|
/* data chunk length */
|
||
|
|
view.setUint32(40, samples.length * 2, true);
|
||
|
|
|
||
|
|
floatTo16BitPCM(view, 44, samples);
|
||
|
|
|
||
|
|
return view;
|
||
|
|
}
|
||
|
|
}, self);
|
||
|
|
|
||
|
|
this.worker.postMessage({
|
||
|
|
command: 'init',
|
||
|
|
config: {
|
||
|
|
sampleRate: this.context.sampleRate,
|
||
|
|
numChannels: this.config.numChannels
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
this.worker.onmessage = function (e) {
|
||
|
|
var cb = _this.callbacks[e.data.command].pop();
|
||
|
|
if (typeof cb == 'function') {
|
||
|
|
cb(e.data.data);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
_createClass(Recorder, [{
|
||
|
|
key: 'record',
|
||
|
|
value: function record() {
|
||
|
|
this.recording = true;
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: 'stop',
|
||
|
|
value: function stop() {
|
||
|
|
this.recording = false;
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: 'clear',
|
||
|
|
value: function clear() {
|
||
|
|
this.worker.postMessage({ command: 'clear' });
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: 'getBuffer',
|
||
|
|
value: function getBuffer(cb) {
|
||
|
|
cb = cb || this.config.callback;
|
||
|
|
if (!cb) throw new Error('Callback not set');
|
||
|
|
|
||
|
|
this.callbacks.getBuffer.push(cb);
|
||
|
|
|
||
|
|
this.worker.postMessage({ command: 'getBuffer' });
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: 'exportWAV',
|
||
|
|
value: function exportWAV(cb, mimeType) {
|
||
|
|
mimeType = mimeType || this.config.mimeType;
|
||
|
|
cb = cb || this.config.callback;
|
||
|
|
if (!cb) throw new Error('Callback not set');
|
||
|
|
|
||
|
|
this.callbacks.exportWAV.push(cb);
|
||
|
|
|
||
|
|
this.worker.postMessage({
|
||
|
|
command: 'exportWAV',
|
||
|
|
type: mimeType
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}], [{
|
||
|
|
key: 'forceDownload',
|
||
|
|
value: function forceDownload(blob, filename) {
|
||
|
|
var url = (window.URL || window.webkitURL).createObjectURL(blob);
|
||
|
|
var link = window.document.createElement('a');
|
||
|
|
link.href = url;
|
||
|
|
link.download = filename || 'output.wav';
|
||
|
|
var click = document.createEvent("Event");
|
||
|
|
click.initEvent("click", true, true);
|
||
|
|
link.dispatchEvent(click);
|
||
|
|
}
|
||
|
|
}]);
|
||
|
|
|
||
|
|
return Recorder;
|
||
|
|
})();
|
||
|
|
|
||
|
|
exports.default = Recorder;
|
||
|
|
|
||
|
|
},{"inline-worker":3}],3:[function(require,module,exports){
|
||
|
|
"use strict";
|
||
|
|
|
||
|
|
module.exports = require("./inline-worker");
|
||
|
|
},{"./inline-worker":4}],4:[function(require,module,exports){
|
||
|
|
(function (global){
|
||
|
|
"use strict";
|
||
|
|
|
||
|
|
var _createClass = (function () { function defineProperties(target, props) { for (var key in props) { var prop = props[key]; prop.configurable = true; if (prop.value) prop.writable = true; } Object.defineProperties(target, props); } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
|
||
|
|
|
||
|
|
var _classCallCheck = function (instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } };
|
||
|
|
|
||
|
|
var WORKER_ENABLED = !!(global === global.window && global.URL && global.Blob && global.Worker);
|
||
|
|
|
||
|
|
var InlineWorker = (function () {
|
||
|
|
function InlineWorker(func, self) {
|
||
|
|
var _this = this;
|
||
|
|
|
||
|
|
_classCallCheck(this, InlineWorker);
|
||
|
|
|
||
|
|
if (WORKER_ENABLED) {
|
||
|
|
var functionBody = func.toString().trim().match(/^function\s*\w*\s*\([\w\s,]*\)\s*{([\w\W]*?)}$/)[1];
|
||
|
|
var url = global.URL.createObjectURL(new global.Blob([functionBody], { type: "text/javascript" }));
|
||
|
|
|
||
|
|
return new global.Worker(url);
|
||
|
|
}
|
||
|
|
|
||
|
|
this.self = self;
|
||
|
|
this.self.postMessage = function (data) {
|
||
|
|
setTimeout(function () {
|
||
|
|
_this.onmessage({ data: data });
|
||
|
|
}, 0);
|
||
|
|
};
|
||
|
|
|
||
|
|
setTimeout(function () {
|
||
|
|
func.call(self);
|
||
|
|
}, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
_createClass(InlineWorker, {
|
||
|
|
postMessage: {
|
||
|
|
value: function postMessage(data) {
|
||
|
|
var _this = this;
|
||
|
|
|
||
|
|
setTimeout(function () {
|
||
|
|
_this.self.onmessage({ data: data });
|
||
|
|
}, 0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
return InlineWorker;
|
||
|
|
})();
|
||
|
|
|
||
|
|
module.exports = InlineWorker;
|
||
|
|
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
|
},{}]},{},[1])(1)
|
||
|
|
});
|