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Merge pull request mattdiamond#7 from daaain/master
HTML example
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<!DOCTYPE html> | ||
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<html> | ||
<head> | ||
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> | ||
<title>Live input record and playback</title> | ||
</head> | ||
<body> | ||
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<h1>Recorder.js simple WAV export example</h1> | ||
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<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> | ||
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<button onclick="startRecording(this);">record</button> | ||
<button onclick="stopRecording(this);" disabled>stop</button> | ||
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<h2>Recordings</h2> | ||
<ul id="recordingslist"></ul> | ||
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<h2>Log</h2> | ||
<pre id="log"></pre> | ||
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<script> | ||
function __log(e, data) { | ||
log.innerHTML += "\n" + e + " " + (data || ''); | ||
} | ||
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var audio_context; | ||
var recorder; | ||
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function startUserMedia(stream) { | ||
var input = audio_context.createMediaStreamSource(stream); | ||
__log('Media stream created.'); | ||
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input.connect(audio_context.destination); | ||
__log('Input connected to audio context destination.'); | ||
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recorder = new Recorder(input); | ||
__log('Recorder initialised.'); | ||
} | ||
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function startRecording(button) { | ||
recorder && recorder.record(); | ||
button.disabled = true; | ||
button.nextElementSibling.disabled = false; | ||
__log('Recording...'); | ||
} | ||
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function stopRecording(button) { | ||
recorder && recorder.stop(); | ||
button.disabled = true; | ||
button.previousElementSibling.disabled = false; | ||
__log('Stopped recording.'); | ||
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// create WAV download link using audio data blob | ||
createDownloadLink(); | ||
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recorder.clear(); | ||
} | ||
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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'); | ||
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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); | ||
}); | ||
} | ||
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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; | ||
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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!'); | ||
} | ||
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navigator.getUserMedia({audio: true}, startUserMedia, function(e) { | ||
__log('No live audio input: ' + e); | ||
}); | ||
}; | ||
</script> | ||
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<script src="recorder.js"></script> | ||
</body> | ||
</html> |
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