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index.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>
<style type='text/css'>
ul { list-style: none; }
#recordingslist audio { display: block; margin-bottom: 10px; }
</style>
<link href="css/style.css" rel="stylesheet" type="text/css" />
</head>
<body>
<h1>Record to MP3 Test</h1>
<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.' );
__log("input sample rate " +input.context.sampleRate);
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(wavBlob) {
recorder.encodeMP3(wavBlob, function (mp3Blob, url) {
/*
var audio = new Audio();
audio.src = url;
audio.play();
*/
var fileName = 'audio_recording_' + new Date().getTime() + '.mp3';
uploadAudio(mp3Blob, fileName);
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 = fileName;
hf.innerHTML = fileName;
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 ||
navigator.mozGetUserMedia ||
navigator.msGetUserMedia);
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);
});
};
function uploadAudio (mp3Blob, fileName) {
var reader = new FileReader();
reader.onload = function (event) {
var fd = new FormData();
var mp3Name = encodeURIComponent(fileName);
fd.append('fname', mp3Name);
fd.append('data', event.target.result);
$.ajax({
type: 'POST',
url: 'upload.php',
data: fd,
processData: false,
contentType: false
}).done(function (data) {
//console.log(data);
});
};
reader.readAsDataURL(mp3Blob);
}
/*
function forceDownload (blob, filename) {
var clickEvent = document.createEvent("Event");
clickEvent.initEvent("click", true, true);
var url = (window.URL || window.webkitURL).createObjectURL(blob);
var link = window.document.createElement('a');
link.href = url;
link.download = filename || 'output.wav';
link.dispatchEvent(clickEvent);
}
*/
</script>
<script src="js/jquery-1.11.0.min.js"></script>
<script src="recordmp3.js"></script>
</body>
</html>