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Merge pull request mattdiamond#7 from daaain/master
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HTML example
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mattdiamond committed Nov 27, 2012
2 parents aa77893 + a63d960 commit af9971f
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102 changes: 102 additions & 0 deletions example_simple_exportwav.html
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<!DOCTYPE html>

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Live input record and playback</title>
</head>
<body>

<h1>Recorder.js simple WAV export example</h1>

<p>Make sure you are using a recent version of Google Chrome, at the moment this only works with Google Chrome Canary.</p>
<p>Also before you enable microphone input either plug in headphones or turn the volume down if you want to avoid ear splitting feedback!</p>

<button onclick="startRecording(this);">record</button>
<button onclick="stopRecording(this);" disabled>stop</button>

<h2>Recordings</h2>
<ul id="recordingslist"></ul>

<h2>Log</h2>
<pre id="log"></pre>

<script>
function __log(e, data) {
log.innerHTML += "\n" + e + " " + (data || '');
}

var audio_context;
var recorder;

function startUserMedia(stream) {
var input = audio_context.createMediaStreamSource(stream);
__log('Media stream created.');

input.connect(audio_context.destination);
__log('Input connected to audio context destination.');

recorder = new Recorder(input);
__log('Recorder initialised.');
}

function startRecording(button) {
recorder && recorder.record();
button.disabled = true;
button.nextElementSibling.disabled = false;
__log('Recording...');
}

function stopRecording(button) {
recorder && recorder.stop();
button.disabled = true;
button.previousElementSibling.disabled = false;
__log('Stopped recording.');

// create WAV download link using audio data blob
createDownloadLink();

recorder.clear();
}

function createDownloadLink() {
recorder && recorder.exportWAV(function(blob) {
var url = URL.createObjectURL(blob);
var li = document.createElement('li');
var au = document.createElement('audio');
var hf = document.createElement('a');

au.controls = true;
au.src = url;
hf.href = url;
hf.download = new Date().toISOString() + '.wav';
hf.innerHTML = hf.download;
li.appendChild(au);
li.appendChild(hf);
recordingslist.appendChild(li);
});
}

window.onload = function init() {
try {
// webkit shim
window.AudioContext = window.AudioContext || window.webkitAudioContext;
navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia;
window.URL = window.URL || window.webkitURL;

audio_context = new AudioContext;
__log('Audio context set up.');
__log('navigator.getUserMedia ' + (navigator.getUserMedia ? 'available.' : 'not present!'));
} catch (e) {
alert('No web audio support in this browser!');
}

navigator.getUserMedia({audio: true}, startUserMedia, function(e) {
__log('No live audio input: ' + e);
});
};
</script>

<script src="recorder.js"></script>
</body>
</html>
2 changes: 1 addition & 1 deletion recorder.js
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(function(window){

var WORKER_PATH = 'js/recorderjs/recorderWorker.js';
var WORKER_PATH = 'recorderWorker.js';

var Recorder = function(source, cfg){
var config = cfg || {};
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