remove mp3 lame already file and webrecorder worker unused
Audric Ackermann
4 years ago
parent
cf71c9a00f
commit
2bcc7be3e6
@ -1,292 +0,0 @@
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/*!
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Autosize 4.0.0
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license: MIT
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http://www.jacklmoore.com/autosize
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*/
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(function (global, factory) {
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if (typeof define === 'function' && define.amd) {
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define(['exports', 'module'], factory);
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} else if (typeof exports !== 'undefined' && typeof module !== 'undefined') {
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factory(exports, module);
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} else {
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var mod = {
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exports: {}
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};
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factory(mod.exports, mod);
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global.autosize = mod.exports;
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}
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})(this, function (exports, module) {
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'use strict';
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var map = typeof Map === "function" ? new Map() : (function () {
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var keys = [];
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var values = [];
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return {
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has: function has(key) {
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return keys.indexOf(key) > -1;
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},
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get: function get(key) {
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return values[keys.indexOf(key)];
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},
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set: function set(key, value) {
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if (keys.indexOf(key) === -1) {
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keys.push(key);
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values.push(value);
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}
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},
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'delete': function _delete(key) {
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var index = keys.indexOf(key);
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if (index > -1) {
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keys.splice(index, 1);
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values.splice(index, 1);
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}
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}
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};
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})();
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var createEvent = function createEvent(name) {
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return new Event(name, { bubbles: true });
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};
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try {
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new Event('test');
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} catch (e) {
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// IE does not support `new Event()`
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createEvent = function (name) {
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var evt = document.createEvent('Event');
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evt.initEvent(name, true, false);
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return evt;
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};
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}
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function assign(ta) {
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if (!ta || !ta.nodeName || ta.nodeName !== 'TEXTAREA' || map.has(ta)) return;
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var heightOffset = null;
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var clientWidth = ta.clientWidth;
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var cachedHeight = null;
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function init() {
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var style = window.getComputedStyle(ta, null);
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if (style.resize === 'vertical') {
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ta.style.resize = 'none';
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} else if (style.resize === 'both') {
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ta.style.resize = 'horizontal';
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}
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if (style.boxSizing === 'content-box') {
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heightOffset = -(parseFloat(style.paddingTop) + parseFloat(style.paddingBottom));
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} else {
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heightOffset = parseFloat(style.borderTopWidth) + parseFloat(style.borderBottomWidth);
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}
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// Fix when a textarea is not on document body and heightOffset is Not a Number
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if (isNaN(heightOffset)) {
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heightOffset = 0;
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}
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update();
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}
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function changeOverflow(value) {
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{
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// Chrome/Safari-specific fix:
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// When the textarea y-overflow is hidden, Chrome/Safari do not reflow the text to account for the space
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// made available by removing the scrollbar. The following forces the necessary text reflow.
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var width = ta.style.width;
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ta.style.width = '0px';
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// Force reflow:
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/* jshint ignore:start */
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ta.offsetWidth;
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/* jshint ignore:end */
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ta.style.width = width;
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}
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ta.style.overflowY = value;
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}
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function getParentOverflows(el) {
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var arr = [];
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while (el && el.parentNode && el.parentNode instanceof Element) {
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if (el.parentNode.scrollTop) {
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arr.push({
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node: el.parentNode,
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scrollTop: el.parentNode.scrollTop
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});
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}
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el = el.parentNode;
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}
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return arr;
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}
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function resize() {
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var originalHeight = ta.style.height;
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var overflows = getParentOverflows(ta);
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var docTop = document.documentElement && document.documentElement.scrollTop; // Needed for Mobile IE (ticket #240)
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ta.style.height = '';
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var endHeight = ta.scrollHeight + heightOffset;
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if (ta.scrollHeight === 0) {
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// If the scrollHeight is 0, then the element probably has display:none or is detached from the DOM.
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ta.style.height = originalHeight;
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return;
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}
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ta.style.height = endHeight + 'px';
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// used to check if an update is actually necessary on window.resize
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clientWidth = ta.clientWidth;
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// prevents scroll-position jumping
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overflows.forEach(function (el) {
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el.node.scrollTop = el.scrollTop;
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});
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if (docTop) {
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document.documentElement.scrollTop = docTop;
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}
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}
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function update() {
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resize();
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var styleHeight = Math.round(parseFloat(ta.style.height));
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var computed = window.getComputedStyle(ta, null);
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// Using offsetHeight as a replacement for computed.height in IE, because IE does not account use of border-box
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var actualHeight = computed.boxSizing === 'content-box' ? Math.round(parseFloat(computed.height)) : ta.offsetHeight;
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// The actual height not matching the style height (set via the resize method) indicates that
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// the max-height has been exceeded, in which case the overflow should be allowed.
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if (actualHeight !== styleHeight) {
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if (computed.overflowY === 'hidden') {
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changeOverflow('scroll');
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resize();
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actualHeight = computed.boxSizing === 'content-box' ? Math.round(parseFloat(window.getComputedStyle(ta, null).height)) : ta.offsetHeight;
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}
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} else {
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// Normally keep overflow set to hidden, to avoid flash of scrollbar as the textarea expands.
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if (computed.overflowY !== 'hidden') {
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changeOverflow('hidden');
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resize();
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actualHeight = computed.boxSizing === 'content-box' ? Math.round(parseFloat(window.getComputedStyle(ta, null).height)) : ta.offsetHeight;
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}
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}
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if (cachedHeight !== actualHeight) {
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cachedHeight = actualHeight;
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var evt = createEvent('autosize:resized');
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try {
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ta.dispatchEvent(evt);
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} catch (err) {
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// Firefox will throw an error on dispatchEvent for a detached element
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// https://bugzilla.mozilla.org/show_bug.cgi?id=889376
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}
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}
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}
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var pageResize = function pageResize() {
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if (ta.clientWidth !== clientWidth) {
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update();
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}
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};
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var destroy = (function (style) {
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window.removeEventListener('resize', pageResize, false);
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ta.removeEventListener('input', update, false);
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ta.removeEventListener('keyup', update, false);
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ta.removeEventListener('autosize:destroy', destroy, false);
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ta.removeEventListener('autosize:update', update, false);
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Object.keys(style).forEach(function (key) {
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ta.style[key] = style[key];
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});
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map['delete'](ta);
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}).bind(ta, {
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height: ta.style.height,
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resize: ta.style.resize,
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overflowY: ta.style.overflowY,
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overflowX: ta.style.overflowX,
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wordWrap: ta.style.wordWrap
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});
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ta.addEventListener('autosize:destroy', destroy, false);
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// IE9 does not fire onpropertychange or oninput for deletions,
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// so binding to onkeyup to catch most of those events.
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// There is no way that I know of to detect something like 'cut' in IE9.
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if ('onpropertychange' in ta && 'oninput' in ta) {
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ta.addEventListener('keyup', update, false);
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}
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window.addEventListener('resize', pageResize, false);
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ta.addEventListener('input', update, false);
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ta.addEventListener('autosize:update', update, false);
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ta.style.overflowX = 'hidden';
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ta.style.wordWrap = 'break-word';
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map.set(ta, {
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destroy: destroy,
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update: update
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});
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init();
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}
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function destroy(ta) {
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var methods = map.get(ta);
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if (methods) {
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methods.destroy();
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}
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}
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function update(ta) {
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var methods = map.get(ta);
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if (methods) {
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methods.update();
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}
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}
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var autosize = null;
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// Do nothing in Node.js environment and IE8 (or lower)
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if (typeof window === 'undefined' || typeof window.getComputedStyle !== 'function') {
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autosize = function (el) {
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return el;
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};
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autosize.destroy = function (el) {
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return el;
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};
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autosize.update = function (el) {
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return el;
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};
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} else {
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autosize = function (el, options) {
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if (el) {
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Array.prototype.forEach.call(el.length ? el : [el], function (x) {
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return assign(x, options);
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});
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}
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return el;
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};
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autosize.destroy = function (el) {
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if (el) {
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Array.prototype.forEach.call(el.length ? el : [el], destroy);
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}
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return el;
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};
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autosize.update = function (el) {
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if (el) {
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Array.prototype.forEach.call(el.length ? el : [el], update);
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}
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return el;
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};
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}
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module.exports = autosize;
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});
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File diff suppressed because one or more lines are too long
@ -1,97 +0,0 @@
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(function(window){
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var WORKER_PATH = 'recorderWorker.js';
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var Recorder = function(source, cfg){
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var config = cfg || {};
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var bufferLen = config.bufferLen || 4096;
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this.context = source.context;
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this.node = (this.context.createScriptProcessor ||
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this.context.createJavaScriptNode).call(this.context,
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bufferLen, 2, 2);
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var worker = new Worker(config.workerPath || WORKER_PATH);
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worker.postMessage({
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command: 'init',
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config: {
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sampleRate: this.context.sampleRate
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}
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});
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var recording = false,
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currCallback;
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var self = this;
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this.node.onaudioprocess = function(e){
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if (!recording) return;
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self.ondata && self.ondata(e.inputBuffer.getChannelData(0));
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worker.postMessage({
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command: 'record',
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buffer: [
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e.inputBuffer.getChannelData(0),
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e.inputBuffer.getChannelData(1)
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]
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});
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}
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this.configure = function(cfg){
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for (var prop in cfg){
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if (cfg.hasOwnProperty(prop)){
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config[prop] = cfg[prop];
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}
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}
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}
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this.record = function(){
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recording = true;
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}
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this.stop = function(){
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recording = false;
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}
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this.clear = function(){
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worker.postMessage({ command: 'clear' });
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}
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this.getBuffer = function(cb) {
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currCallback = cb || config.callback;
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worker.postMessage({ command: 'getBuffer' })
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}
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this.exportWAV = function(cb, type){
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currCallback = cb || config.callback;
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type = type || config.type || 'audio/wav';
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if (!currCallback) throw new Error('Callback not set');
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worker.postMessage({
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command: 'exportWAV',
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type: type
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});
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}
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this.shutdown = function(){
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worker.terminate();
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source.disconnect();
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this.node.disconnect();
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};
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worker.onmessage = function(e){
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var blob = e.data;
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currCallback(blob);
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}
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source.connect(this.node);
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this.node.connect(this.context.destination); //this should not be necessary
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};
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Recorder.forceDownload = function(blob, filename){
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var url = (window.URL || window.webkitURL).createObjectURL(blob);
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var link = window.document.createElement('a');
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link.href = url;
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link.download = filename || 'output.wav';
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var click = document.createEvent("Event");
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click.initEvent("click", true, true);
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link.dispatchEvent(click);
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}
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window.Recorder = Recorder;
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})(window);
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@ -1,131 +0,0 @@
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var recLength = 0,
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recBuffersL = [],
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recBuffersR = [],
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sampleRate;
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this.onmessage = function(e){
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switch(e.data.command){
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case 'init':
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init(e.data.config);
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break;
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case 'record':
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record(e.data.buffer);
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break;
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case 'exportWAV':
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exportWAV(e.data.type);
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break;
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case 'getBuffer':
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getBuffer();
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break;
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case 'clear':
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clear();
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break;
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}
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};
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function init(config){
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sampleRate = config.sampleRate;
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}
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function record(inputBuffer){
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recBuffersL.push(inputBuffer[0]);
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recBuffersR.push(inputBuffer[1]);
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recLength += inputBuffer[0].length;
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}
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function exportWAV(type){
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var bufferL = mergeBuffers(recBuffersL, recLength);
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var bufferR = mergeBuffers(recBuffersR, recLength);
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var interleaved = interleave(bufferL, bufferR);
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var dataview = encodeWAV(interleaved);
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var audioBlob = new Blob([dataview], { type: type });
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this.postMessage(audioBlob);
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}
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function getBuffer() {
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var buffers = [];
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buffers.push( mergeBuffers(recBuffersL, recLength) );
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buffers.push( mergeBuffers(recBuffersR, recLength) );
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this.postMessage(buffers);
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}
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function clear(){
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recLength = 0;
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recBuffersL = [];
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recBuffersR = [];
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}
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function mergeBuffers(recBuffers, recLength){
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var result = new Float32Array(recLength);
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var offset = 0;
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for (var i = 0; i < recBuffers.length; i++){
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result.set(recBuffers[i], offset);
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offset += recBuffers[i].length;
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}
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return result;
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}
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function interleave(inputL, inputR){
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var length = inputL.length + inputR.length;
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var result = new Float32Array(length);
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var index = 0,
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inputIndex = 0;
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while (index < length){
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result[index++] = inputL[inputIndex];
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result[index++] = inputR[inputIndex];
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inputIndex++;
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}
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return result;
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}
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function floatTo16BitPCM(output, offset, input){
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for (var i = 0; i < input.length; i++, offset+=2){
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var s = Math.max(-1, Math.min(1, input[i]));
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output.setInt16(offset, s < 0 ? s * 0x8000 : s * 0x7FFF, true);
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}
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}
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function writeString(view, offset, string){
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for (var i = 0; i < string.length; i++){
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view.setUint8(offset + i, string.charCodeAt(i));
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}
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}
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function encodeWAV(samples){
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var buffer = new ArrayBuffer(44 + samples.length * 2);
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var view = new DataView(buffer);
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/* RIFF identifier */
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writeString(view, 0, 'RIFF');
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/* RIFF chunk length */
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view.setUint32(4, 36 + samples.length * 2, true);
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/* RIFF type */
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writeString(view, 8, 'WAVE');
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/* format chunk identifier */
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writeString(view, 12, 'fmt ');
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/* format chunk length */
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view.setUint32(16, 16, true);
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/* sample format (raw) */
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view.setUint16(20, 1, true);
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/* channel count */
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view.setUint16(22, 2, true);
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/* sample rate */
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view.setUint32(24, sampleRate, true);
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/* byte rate (sample rate * block align) */
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view.setUint32(28, sampleRate * 4, true);
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/* block align (channel count * bytes per sample) */
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view.setUint16(32, 4, true);
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/* bits per sample */
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view.setUint16(34, 16, true);
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/* data chunk identifier */
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writeString(view, 36, 'data');
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/* data chunk length */
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view.setUint32(40, samples.length * 2, true);
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floatTo16BitPCM(view, 44, samples);
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return view;
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}
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@ -1,199 +0,0 @@
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(function(window) {
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// internal: same as jQuery.extend(true, args...)
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var extend = function() {
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var target = arguments[0],
|
||||
sources = [].slice.call(arguments, 1);
|
||||
for (var i = 0; i < sources.length; ++i) {
|
||||
var src = sources[i];
|
||||
for (key in src) {
|
||||
var val = src[key];
|
||||
target[key] = typeof val === "object"
|
||||
? extend(typeof target[key] === "object" ? target[key] : {}, val)
|
||||
: val;
|
||||
}
|
||||
}
|
||||
return target;
|
||||
};
|
||||
|
||||
var WORKER_FILE = {
|
||||
wav: "WebAudioRecorderWav.js",
|
||||
ogg: "WebAudioRecorderOgg.js",
|
||||
mp3: "WebAudioRecorderMp3.js"
|
||||
};
|
||||
|
||||
// default configs
|
||||
var CONFIGS = {
|
||||
workerDir: "/", // worker scripts dir (end with /)
|
||||
numChannels: 2, // number of channels
|
||||
encoding: "wav", // encoding (can be changed at runtime)
|
||||
|
||||
// runtime options
|
||||
options: {
|
||||
timeLimit: 300, // recording time limit (sec)
|
||||
encodeAfterRecord: false, // process encoding after recording
|
||||
progressInterval: 1000, // encoding progress report interval (millisec)
|
||||
bufferSize: undefined, // buffer size (use browser default)
|
||||
|
||||
// encoding-specific options
|
||||
wav: {
|
||||
mimeType: "audio/wav"
|
||||
},
|
||||
ogg: {
|
||||
mimeType: "audio/ogg",
|
||||
quality: 0.5 // (VBR only): quality = [-0.1 .. 1]
|
||||
},
|
||||
mp3: {
|
||||
mimeType: "audio/mpeg",
|
||||
bitRate: 160 // (CBR only): bit rate = [64 .. 320]
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
// constructor
|
||||
var WebAudioRecorder = function(sourceNode, configs) {
|
||||
extend(this, CONFIGS, configs || {});
|
||||
this.context = sourceNode.context;
|
||||
if (this.context.createScriptProcessor == null)
|
||||
this.context.createScriptProcessor = this.context.createJavaScriptNode;
|
||||
this.input = this.context.createGain();
|
||||
sourceNode.connect(this.input);
|
||||
this.buffer = [];
|
||||
this.initWorker();
|
||||
};
|
||||
|
||||
// instance methods
|
||||
extend(WebAudioRecorder.prototype, {
|
||||
isRecording: function() { return this.processor != null; },
|
||||
|
||||
setEncoding: function(encoding) {
|
||||
if (this.isRecording())
|
||||
this.error("setEncoding: cannot set encoding during recording");
|
||||
else if (this.encoding !== encoding) {
|
||||
this.encoding = encoding;
|
||||
this.initWorker();
|
||||
}
|
||||
},
|
||||
|
||||
setOptions: function(options) {
|
||||
if (this.isRecording())
|
||||
this.error("setOptions: cannot set options during recording");
|
||||
else {
|
||||
extend(this.options, options);
|
||||
this.worker.postMessage({ command: "options", options: this.options });
|
||||
}
|
||||
},
|
||||
|
||||
startRecording: function() {
|
||||
if (this.isRecording())
|
||||
this.error("startRecording: previous recording is running");
|
||||
else {
|
||||
var numChannels = this.numChannels,
|
||||
buffer = this.buffer,
|
||||
worker = this.worker;
|
||||
this.processor = this.context.createScriptProcessor(
|
||||
this.options.bufferSize,
|
||||
this.numChannels, this.numChannels);
|
||||
this.input.connect(this.processor);
|
||||
this.processor.connect(this.context.destination);
|
||||
this.processor.onaudioprocess = function(event) {
|
||||
for (var ch = 0; ch < numChannels; ++ch)
|
||||
buffer[ch] = event.inputBuffer.getChannelData(ch);
|
||||
worker.postMessage({ command: "record", buffer: buffer });
|
||||
};
|
||||
this.worker.postMessage({
|
||||
command: "start",
|
||||
bufferSize: this.processor.bufferSize
|
||||
});
|
||||
this.startTime = Date.now();
|
||||
}
|
||||
},
|
||||
|
||||
recordingTime: function() {
|
||||
return this.isRecording() ? (Date.now() - this.startTime) * 0.001 : null;
|
||||
},
|
||||
|
||||
cancelRecording: function() {
|
||||
if (this.isRecording()) {
|
||||
this.input.disconnect();
|
||||
this.processor.disconnect();
|
||||
delete this.processor;
|
||||
this.worker.postMessage({ command: "cancel" });
|
||||
} else
|
||||
this.error("cancelRecording: no recording is running");
|
||||
},
|
||||
|
||||
finishRecording: function() {
|
||||
if (this.isRecording()) {
|
||||
this.input.disconnect();
|
||||
this.processor.disconnect();
|
||||
delete this.processor;
|
||||
this.worker.postMessage({ command: "finish" });
|
||||
} else
|
||||
this.error("finishRecording: no recording is running");
|
||||
},
|
||||
|
||||
cancelEncoding: function() {
|
||||
if (this.options.encodeAfterRecord)
|
||||
if (this.isRecording())
|
||||
this.error("cancelEncoding: recording is not finished");
|
||||
else {
|
||||
this.onEncodingCanceled(this);
|
||||
this.initWorker();
|
||||
}
|
||||
else
|
||||
this.error("cancelEncoding: invalid method call");
|
||||
},
|
||||
|
||||
initWorker: function() {
|
||||
if (this.worker != null)
|
||||
this.worker.terminate();
|
||||
this.onEncoderLoading(this, this.encoding);
|
||||
this.worker = new Worker(this.workerDir + WORKER_FILE[this.encoding]);
|
||||
var _this = this;
|
||||
this.worker.onmessage = function(event) {
|
||||
var data = event.data;
|
||||
switch (data.command) {
|
||||
case "loaded":
|
||||
_this.onEncoderLoaded(_this, _this.encoding);
|
||||
break;
|
||||
case "timeout":
|
||||
_this.onTimeout(_this);
|
||||
break;
|
||||
case "progress":
|
||||
_this.onEncodingProgress(_this, data.progress);
|
||||
break;
|
||||
case "complete":
|
||||
_this.onComplete(_this, data.blob);
|
||||
break;
|
||||
case "error":
|
||||
_this.error(data.message);
|
||||
}
|
||||
};
|
||||
this.worker.postMessage({
|
||||
command: "init",
|
||||
config: {
|
||||
sampleRate: this.context.sampleRate,
|
||||
numChannels: this.numChannels
|
||||
},
|
||||
options: this.options
|
||||
});
|
||||
},
|
||||
|
||||
error: function(message) {
|
||||
this.onError(this, "WebAudioRecorder.js:" + message);
|
||||
},
|
||||
|
||||
// event handlers
|
||||
onEncoderLoading: function(recorder, encoding) {},
|
||||
onEncoderLoaded: function(recorder, encoding) {},
|
||||
onTimeout: function(recorder) { recorder.finishRecording(); },
|
||||
onEncodingProgress: function (recorder, progress) {},
|
||||
onEncodingCanceled: function(recorder) {},
|
||||
onComplete: function(recorder, blob) {
|
||||
recorder.onError(recorder, "WebAudioRecorder.js: You must override .onComplete event");
|
||||
},
|
||||
onError: function(recorder, message) { console.log(message); }
|
||||
});
|
||||
|
||||
window.WebAudioRecorder = WebAudioRecorder;
|
||||
})(window);
|
||||
@ -1,91 +0,0 @@
|
||||
importScripts("Mp3LameEncoder.min.js");
|
||||
|
||||
var NUM_CH = 2, // constant
|
||||
sampleRate = 44100,
|
||||
options = undefined,
|
||||
maxBuffers = undefined,
|
||||
encoder = undefined,
|
||||
recBuffers = undefined,
|
||||
bufferCount = 0;
|
||||
|
||||
function error(message) {
|
||||
self.postMessage({ command: "error", message: "mp3: " + message });
|
||||
}
|
||||
|
||||
function init(data) {
|
||||
if (data.config.numChannels === NUM_CH) {
|
||||
sampleRate = data.config.sampleRate;
|
||||
options = data.options;
|
||||
} else
|
||||
error("numChannels must be " + NUM_CH);
|
||||
};
|
||||
|
||||
function setOptions(opt) {
|
||||
if (encoder || recBuffers)
|
||||
error("cannot set options during recording");
|
||||
else
|
||||
options = opt;
|
||||
}
|
||||
|
||||
function start(bufferSize) {
|
||||
maxBuffers = Math.ceil(options.timeLimit * sampleRate / bufferSize);
|
||||
if (options.encodeAfterRecord)
|
||||
recBuffers = [];
|
||||
else
|
||||
encoder = new Mp3LameEncoder(sampleRate, options.mp3.bitRate);
|
||||
}
|
||||
|
||||
function record(buffer) {
|
||||
if (bufferCount++ < maxBuffers)
|
||||
if (encoder)
|
||||
encoder.encode(buffer);
|
||||
else
|
||||
recBuffers.push(buffer);
|
||||
else
|
||||
self.postMessage({ command: "timeout" });
|
||||
};
|
||||
|
||||
function postProgress(progress) {
|
||||
self.postMessage({ command: "progress", progress: progress });
|
||||
};
|
||||
|
||||
function finish() {
|
||||
if (recBuffers) {
|
||||
postProgress(0);
|
||||
encoder = new Mp3LameEncoder(sampleRate, options.mp3.bitRate);
|
||||
var timeout = Date.now() + options.progressInterval;
|
||||
while (recBuffers.length > 0) {
|
||||
encoder.encode(recBuffers.shift());
|
||||
var now = Date.now();
|
||||
if (now > timeout) {
|
||||
postProgress((bufferCount - recBuffers.length) / bufferCount);
|
||||
timeout = now + options.progressInterval;
|
||||
}
|
||||
}
|
||||
postProgress(1);
|
||||
}
|
||||
self.postMessage({
|
||||
command: "complete",
|
||||
blob: encoder.finish(options.mp3.mimeType)
|
||||
});
|
||||
cleanup();
|
||||
};
|
||||
|
||||
function cleanup() {
|
||||
encoder = recBuffers = undefined;
|
||||
bufferCount = 0;
|
||||
}
|
||||
|
||||
self.onmessage = function(event) {
|
||||
var data = event.data;
|
||||
switch (data.command) {
|
||||
case "init": init(data); break;
|
||||
case "options": setOptions(data.options); break;
|
||||
case "start": start(data.bufferSize); break;
|
||||
case "record": record(data.buffer); break;
|
||||
case "finish": finish(); break;
|
||||
case "cancel": cleanup();
|
||||
}
|
||||
};
|
||||
|
||||
self.postMessage({ command: "loaded" });
|
||||
File diff suppressed because one or more lines are too long
@ -1,91 +0,0 @@
|
||||
importScripts("Mp3LameEncoder.min.js");
|
||||
|
||||
var NUM_CH = 2, // constant
|
||||
sampleRate = 44100,
|
||||
options = undefined,
|
||||
maxBuffers = undefined,
|
||||
encoder = undefined,
|
||||
recBuffers = undefined,
|
||||
bufferCount = 0;
|
||||
|
||||
function error(message) {
|
||||
self.postMessage({ command: "error", message: "mp3: " + message });
|
||||
}
|
||||
|
||||
function init(data) {
|
||||
if (data.config.numChannels === NUM_CH) {
|
||||
sampleRate = data.config.sampleRate;
|
||||
options = data.options;
|
||||
} else
|
||||
error("numChannels must be " + NUM_CH);
|
||||
};
|
||||
|
||||
function setOptions(opt) {
|
||||
if (encoder || recBuffers)
|
||||
error("cannot set options during recording");
|
||||
else
|
||||
options = opt;
|
||||
}
|
||||
|
||||
function start(bufferSize) {
|
||||
maxBuffers = Math.ceil(options.timeLimit * sampleRate / bufferSize);
|
||||
if (options.encodeAfterRecord)
|
||||
recBuffers = [];
|
||||
else
|
||||
encoder = new Mp3LameEncoder(sampleRate, options.mp3.bitRate);
|
||||
}
|
||||
|
||||
function record(buffer) {
|
||||
if (bufferCount++ < maxBuffers)
|
||||
if (encoder)
|
||||
encoder.encode(buffer);
|
||||
else
|
||||
recBuffers.push(buffer);
|
||||
else
|
||||
self.postMessage({ command: "timeout" });
|
||||
};
|
||||
|
||||
function postProgress(progress) {
|
||||
self.postMessage({ command: "progress", progress: progress });
|
||||
};
|
||||
|
||||
function finish() {
|
||||
if (recBuffers) {
|
||||
postProgress(0);
|
||||
encoder = new Mp3LameEncoder(sampleRate, options.mp3.bitRate);
|
||||
var timeout = Date.now() + options.progressInterval;
|
||||
while (recBuffers.length > 0) {
|
||||
encoder.encode(recBuffers.shift());
|
||||
var now = Date.now();
|
||||
if (now > timeout) {
|
||||
postProgress((bufferCount - recBuffers.length) / bufferCount);
|
||||
timeout = now + options.progressInterval;
|
||||
}
|
||||
}
|
||||
postProgress(1);
|
||||
}
|
||||
self.postMessage({
|
||||
command: "complete",
|
||||
blob: encoder.finish(options.mp3.mimeType)
|
||||
});
|
||||
cleanup();
|
||||
};
|
||||
|
||||
function cleanup() {
|
||||
encoder = recBuffers = undefined;
|
||||
bufferCount = 0;
|
||||
}
|
||||
|
||||
self.onmessage = function(event) {
|
||||
var data = event.data;
|
||||
switch (data.command) {
|
||||
case "init": init(data); break;
|
||||
case "options": setOptions(data.options); break;
|
||||
case "start": start(data.bufferSize); break;
|
||||
case "record": record(data.buffer); break;
|
||||
case "finish": finish(); break;
|
||||
case "cancel": cleanup();
|
||||
}
|
||||
};
|
||||
|
||||
self.postMessage({ command: "loaded" });
|
||||
Loading…
Reference in New Issue