added javascript/record mic audio
parent
efcf0645e9
commit
37f04518d0
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// set up basic variables for app
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var record = document.querySelector('.record');
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var stop = document.querySelector('.stop');
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var soundClips = document.querySelector('.sound-clips');
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var canvas = document.querySelector('.visualizer');
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var mainSection = document.querySelector('.main-controls');
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// disable stop button while not recording
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stop.disabled = true;
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// visualiser setup - create web audio api context and canvas
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var audioCtx = new (window.AudioContext || webkitAudioContext)();
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var canvasCtx = canvas.getContext("2d");
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//main block for doing the audio recording
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if (navigator.mediaDevices.getUserMedia) {
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console.log('getUserMedia supported.');
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var constraints = { audio: true };
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var chunks = [];
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var onSuccess = function(stream) {
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var mediaRecorder = new MediaRecorder(stream);
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visualize(stream);
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record.onclick = function() {
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mediaRecorder.start();
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console.log(mediaRecorder.state);
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console.log("recorder started");
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record.style.background = "red";
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stop.disabled = false;
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record.disabled = true;
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}
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stop.onclick = function() {
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mediaRecorder.stop();
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console.log(mediaRecorder.state);
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console.log("recorder stopped");
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record.style.background = "";
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record.style.color = "";
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// mediaRecorder.requestData();
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stop.disabled = true;
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record.disabled = false;
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}
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mediaRecorder.onstop = function(e) {
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console.log("data available after MediaRecorder.stop() called.");
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var clipName = prompt('Enter a name for your sound clip?','My unnamed clip');
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console.log(clipName);
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var clipContainer = document.createElement('article');
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var clipLabel = document.createElement('p');
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var audio = document.createElement('audio');
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var deleteButton = document.createElement('button');
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clipContainer.classList.add('clip');
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audio.setAttribute('controls', '');
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deleteButton.textContent = 'Delete';
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deleteButton.className = 'delete';
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if(clipName === null) {
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clipLabel.textContent = 'My unnamed clip';
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} else {
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clipLabel.textContent = clipName;
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}
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clipContainer.appendChild(audio);
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clipContainer.appendChild(clipLabel);
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clipContainer.appendChild(deleteButton);
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soundClips.appendChild(clipContainer);
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audio.controls = true;
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var blob = new Blob(chunks, { 'type' : 'audio/ogg; codecs=opus' });
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chunks = [];
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var audioURL = window.URL.createObjectURL(blob);
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audio.src = audioURL;
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console.log("recorder stopped");
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deleteButton.onclick = function(e) {
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evtTgt = e.target;
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evtTgt.parentNode.parentNode.removeChild(evtTgt.parentNode);
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}
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clipLabel.onclick = function() {
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var existingName = clipLabel.textContent;
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var newClipName = prompt('Enter a new name for your sound clip?');
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if(newClipName === null) {
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clipLabel.textContent = existingName;
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} else {
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clipLabel.textContent = newClipName;
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}
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}
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}
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mediaRecorder.ondataavailable = function(e) {
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chunks.push(e.data);
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}
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}
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var onError = function(err) {
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console.log('The following error occured: ' + err);
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}
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navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError);
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} else {
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console.log('getUserMedia not supported on your browser!');
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}
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function visualize(stream) {
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var source = audioCtx.createMediaStreamSource(stream);
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var analyser = audioCtx.createAnalyser();
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analyser.fftSize = 2048;
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var bufferLength = analyser.frequencyBinCount;
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var dataArray = new Uint8Array(bufferLength);
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source.connect(analyser);
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//analyser.connect(audioCtx.destination);
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draw()
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function draw() {
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WIDTH = canvas.width
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HEIGHT = canvas.height;
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requestAnimationFrame(draw);
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analyser.getByteTimeDomainData(dataArray);
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canvasCtx.fillStyle = 'rgb(200, 200, 200)';
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canvasCtx.fillRect(0, 0, WIDTH, HEIGHT);
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canvasCtx.lineWidth = 2;
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canvasCtx.strokeStyle = 'rgb(0, 0, 0)';
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canvasCtx.beginPath();
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var sliceWidth = WIDTH * 1.0 / bufferLength;
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var x = 0;
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for(var i = 0; i < bufferLength; i++) {
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var v = dataArray[i] / 128.0;
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var y = v * HEIGHT/2;
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if(i === 0) {
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canvasCtx.moveTo(x, y);
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} else {
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canvasCtx.lineTo(x, y);
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}
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x += sliceWidth;
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}
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canvasCtx.lineTo(canvas.width, canvas.height/2);
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canvasCtx.stroke();
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}
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}
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window.onresize = function() {
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canvas.width = mainSection.offsetWidth;
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}
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window.onresize();
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(function() {
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var promisifiedOldGUM = function(constraints, successCallback, errorCallback) {
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// First get ahold of getUserMedia, if present
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var getUserMedia = (navigator.getUserMedia ||
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navigator.webkitGetUserMedia ||
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navigator.mozGetUserMedia ||
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navigator.msGetUserMedia);
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// Some browsers just don't implement it - return a rejected promise with an error
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// to keep a consistent interface
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if(!getUserMedia) {
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return Promise.reject(new Error('getUserMedia is not implemented in this browser'));
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}
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// Otherwise, wrap the call to the old navigator.getUserMedia with a Promise
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return new Promise(function(successCallback, errorCallback) {
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getUserMedia.call(navigator, constraints, successCallback, errorCallback);
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});
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}
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// Older browsers might not implement mediaDevices at all, so we set an empty object first
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if(navigator.mediaDevices === undefined) {
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navigator.mediaDevices = {};
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}
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// Some browsers partially implement mediaDevices. We can't just assign an object
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// with getUserMedia as it would overwrite existing properties.
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// Here, we will just add the getUserMedia property if it's missing.
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if(navigator.mediaDevices.getUserMedia === undefined) {
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navigator.mediaDevices.getUserMedia = promisifiedOldGUM;
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}
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})();
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/*! matchMedia() polyfill - Test a CSS media type/query in JS. Authors & copyright (c) 2012: Scott Jehl, Paul Irish, Nicholas Zakas. Dual MIT/BSD license */
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/*! NOTE: If you're already including a window.matchMedia polyfill via Modernizr or otherwise, you don't need this part */
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window.matchMedia=window.matchMedia||function(a){"use strict";var c,d=a.documentElement,e=d.firstElementChild||d.firstChild,f=a.createElement("body"),g=a.createElement("div");return g.id="mq-test-1",g.style.cssText="position:absolute;top:-100em",f.style.background="none",f.appendChild(g),function(a){return g.innerHTML='­<style media="'+a+'"> #mq-test-1 { width: 42px; }</style>',d.insertBefore(f,e),c=42===g.offsetWidth,d.removeChild(f),{matches:c,media:a}}}(document);
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/*! Respond.js v1.3.0: min/max-width media query polyfill. (c) Scott Jehl. MIT/GPLv2 Lic. j.mp/respondjs */
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(function(a){"use strict";function x(){u(!0)}var b={};if(a.respond=b,b.update=function(){},b.mediaQueriesSupported=a.matchMedia&&a.matchMedia("only all").matches,!b.mediaQueriesSupported){var q,r,t,c=a.document,d=c.documentElement,e=[],f=[],g=[],h={},i=30,j=c.getElementsByTagName("head")[0]||d,k=c.getElementsByTagName("base")[0],l=j.getElementsByTagName("link"),m=[],n=function(){for(var b=0;l.length>b;b++){var c=l[b],d=c.href,e=c.media,f=c.rel&&"stylesheet"===c.rel.toLowerCase();d&&f&&!h[d]&&(c.styleSheet&&c.styleSheet.rawCssText?(p(c.styleSheet.rawCssText,d,e),h[d]=!0):(!/^([a-zA-Z:]*\/\/)/.test(d)&&!k||d.replace(RegExp.$1,"").split("/")[0]===a.location.host)&&m.push({href:d,media:e}))}o()},o=function(){if(m.length){var b=m.shift();v(b.href,function(c){p(c,b.href,b.media),h[b.href]=!0,a.setTimeout(function(){o()},0)})}},p=function(a,b,c){var d=a.match(/@media[^\{]+\{([^\{\}]*\{[^\}\{]*\})+/gi),g=d&&d.length||0;b=b.substring(0,b.lastIndexOf("/"));var h=function(a){return a.replace(/(url\()['"]?([^\/\)'"][^:\)'"]+)['"]?(\))/g,"$1"+b+"$2$3")},i=!g&&c;b.length&&(b+="/"),i&&(g=1);for(var j=0;g>j;j++){var k,l,m,n;i?(k=c,f.push(h(a))):(k=d[j].match(/@media *([^\{]+)\{([\S\s]+?)$/)&&RegExp.$1,f.push(RegExp.$2&&h(RegExp.$2))),m=k.split(","),n=m.length;for(var o=0;n>o;o++)l=m[o],e.push({media:l.split("(")[0].match(/(only\s+)?([a-zA-Z]+)\s?/)&&RegExp.$2||"all",rules:f.length-1,hasquery:l.indexOf("(")>-1,minw:l.match(/\(\s*min\-width\s*:\s*(\s*[0-9\.]+)(px|em)\s*\)/)&&parseFloat(RegExp.$1)+(RegExp.$2||""),maxw:l.match(/\(\s*max\-width\s*:\s*(\s*[0-9\.]+)(px|em)\s*\)/)&&parseFloat(RegExp.$1)+(RegExp.$2||"")})}u()},s=function(){var a,b=c.createElement("div"),e=c.body,f=!1;return b.style.cssText="position:absolute;font-size:1em;width:1em",e||(e=f=c.createElement("body"),e.style.background="none"),e.appendChild(b),d.insertBefore(e,d.firstChild),a=b.offsetWidth,f?d.removeChild(e):e.removeChild(b),a=t=parseFloat(a)},u=function(b){var h="clientWidth",k=d[h],m="CSS1Compat"===c.compatMode&&k||c.body[h]||k,n={},o=l[l.length-1],p=(new Date).getTime();if(b&&q&&i>p-q)return a.clearTimeout(r),r=a.setTimeout(u,i),void 0;q=p;for(var v in e)if(e.hasOwnProperty(v)){var w=e[v],x=w.minw,y=w.maxw,z=null===x,A=null===y,B="em";x&&(x=parseFloat(x)*(x.indexOf(B)>-1?t||s():1)),y&&(y=parseFloat(y)*(y.indexOf(B)>-1?t||s():1)),w.hasquery&&(z&&A||!(z||m>=x)||!(A||y>=m))||(n[w.media]||(n[w.media]=[]),n[w.media].push(f[w.rules]))}for(var C in g)g.hasOwnProperty(C)&&g[C]&&g[C].parentNode===j&&j.removeChild(g[C]);for(var D in n)if(n.hasOwnProperty(D)){var E=c.createElement("style"),F=n[D].join("\n");E.type="text/css",E.media=D,j.insertBefore(E,o.nextSibling),E.styleSheet?E.styleSheet.cssText=F:E.appendChild(c.createTextNode(F)),g.push(E)}},v=function(a,b){var c=w();c&&(c.open("GET",a,!0),c.onreadystatechange=function(){4!==c.readyState||200!==c.status&&304!==c.status||b(c.responseText)},4!==c.readyState&&c.send(null))},w=function(){var b=!1;try{b=new a.XMLHttpRequest}catch(c){b=new a.ActiveXObject("Microsoft.XMLHTTP")}return function(){return b}}();n(),b.update=n,a.addEventListener?a.addEventListener("resize",x,!1):a.attachEvent&&a.attachEvent("onresize",x)}})(this);
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.wrapper {
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height: 100%;
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display: flex;
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flex-direction: column;
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}
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.main-controls {
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padding: 0.5rem 0;
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}
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canvas {
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display: block;
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margin-bottom: 0.5rem;
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}
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#buttons {
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display: flex;
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flex-direction: row;
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justify-content: space-between;
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}
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#buttons button {
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font-size: 1rem;
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padding: 1rem;
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width: calc(50% - 0.25rem);
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}
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button {
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font-size: 1rem;
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background: #0088cc;
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text-align: center;
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color: white;
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border: none;
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transition: all 0.2s;
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padding: 0.5rem;
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}
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button:hover, button:focus {
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box-shadow: inset 0px 0px 10px rgba(255, 255, 255, 1);
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background: #0ae;
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}
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button:active {
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box-shadow: inset 0px 0px 20px rgba(0,0,0,0.5);
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transform: translateY(2px);
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}
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/* Make the clips use as much space as possible, and
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* also show a scrollbar when there are too many clips to show
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* in the available space */
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.sound-clips {
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flex: 1;
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overflow: auto;
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}
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section, article {
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display: block;
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}
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.clip {
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padding-bottom: 1rem;
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}
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audio {
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width: 100%;
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display: block;
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margin: 1rem auto 0.5rem;
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}
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.clip p {
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display: inline-block;
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font-size: 1rem;
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}
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.clip button {
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font-size: 1rem;
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float: right;
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}
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button.delete {
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background: #f00;
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padding: 0.5rem 0.75rem;
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font-size: 0.8rem;
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}
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/* Checkbox hack to control information box display */
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label {
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font-size: 3rem;
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position: absolute;
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top: 2px;
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right: 3px;
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z-index: 5;
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cursor: pointer;
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}
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input[type=checkbox] {
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position: absolute;
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top: -100px;
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}
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aside {
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position: fixed;
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top: 0;
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left: 0;
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width: 100%;
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height: 100%;
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transform: translateX(100%);
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transition: 0.3s all ease-out;
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background-color: #efefef;
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padding: 1rem;
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}
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aside p {
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font-size: 1.2rem;
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margin: 0.5rem 0;
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}
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aside a {
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color: #666;
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}
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/* Toggled State of information box */
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input[type=checkbox]:checked ~ aside {
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transform: translateX(0);
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}
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/* Cursor when clip name is clicked over */
|
||||||
|
|
||||||
|
.clip p {
|
||||||
|
cursor: pointer;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Adjustments for wider screens */
|
||||||
|
@media all and (min-width: 800px) {
|
||||||
|
/* Don't take all the space as readability is lost when line length
|
||||||
|
goes past a certain size */
|
||||||
|
.wrapper {
|
||||||
|
width: 90%;
|
||||||
|
max-width: 1000px;
|
||||||
|
margin: 0 auto;
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue