music-visualization/test.html at master · minsung03/music-visualization · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <input id="files" type="file" id="files" name="files[]" multiple />


<script>
    window.AudioContext = window.AudioContext || window.webkitAudioContext;
var context = new window.AudioContext();
var source;
function playSound(arraybuffer) {
    context.decodeAudioData(arraybuffer, function (buf) {
        source = context.createBufferSource();
        source.connect(context.destination);
        source.buffer = buf;
        source.start(0);
    });
}

function handleFileSelect(evt) {
    var files = evt.target.files; // FileList object
    playFile(files[0]);
}

function playFile(file) {
    var freader = new FileReader();

    freader.onload = function (e) {
        console.log(e.target.result);
        playSound(e.target.result);
    };
    freader.readAsArrayBuffer(file);
}

player = document.getElementById('player');
document.getElementById('files').addEventListener('change', handleFileSelect, false);
document.getElementById('play').onclick = function () {
    player.play();
};
</script>
</body>
</html>