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<!DOCTYPE html>
<html>
<!--
csound.js CSD file player example
Copyright (C) 2013 V Lazzarini
-->
<head>
<title> WebAudio Csound </title>
<style type="text/css">
html, body {
font-family: Monospace;
color: #bf94f7;
background-color: #000055;
}
#console {
font-family: Monospace;
color: #b5b6ff;
background-color: #000000;
font-size: 16px;
width: 805px;
display: flex;
align-items: center;
justify-content: center;
border-style: solid;
padding: 5px 5px;
}
#filebut {
font-size: 16px;
padding: 5px 0px;
}
input[type=file] {
font-family: Monospace;
font-size: 16px;
background-color: #b5b6ff;
color: #000000;
}
button {
margin: auto;
font-family: Monospace;
width: 150px;
padding: 2px 0px;
font-size: 16px;
background-color: #b5b6ff;
}
</style>
<script type="text/javascript" src="js/csound.js"></script>
<script type="text/javascript">
// called by csound.js
function moduleDidLoad() {
document.getElementById('playButton').disabled = false;
document.getElementById('resetButton').disabled = false;
}
function attachListeners() {
document.getElementById('files').
addEventListener('change', handleFileSelect, false);
document.getElementById('playButton').
addEventListener('click', togglePlay);
document.getElementById('resetButton').
addEventListener('click', resetPlayer);
document.getElementById('reloadButton').
addEventListener('click', reloadPage);
}
var count = 0;
function handleMessage(message) {
var element = document.getElementById('console');
element.value += message;
element.scrollTop = 99999; // focus on bottom
count += 1;
if (count == 1000) {
element.value = ' ';
count = 0;
}
if (message.match(/^Score finished/)){
resetPlayer();
}
}
var playing = false;
var started = false;
var loaded = false;
async function togglePlay() {
if (loaded) {
if (!playing) {
if (started) await csound.Csound.start();
else {
CSOUND_AUDIO_CONTEXT.resume();
await csound.Csound.compileCSD("csdfile.csd");
await csound.Csound.start();
started = true;
}
document.getElementById('playButton').innerText = "Pause";
playing = true;
} else {
await csound.Csound.stop()
document.getElementById('playButton').innerText = "Play";
playing = false;
}
}
else {
csound.UpdateStatus("Load a file to play.")
}
}
async function resetPlayer() {
await csound.Csound.stop();
document.getElementById('playButton').innerText = "Play";
playing = false;
started = false;
await csound.Csound.reset();
}
function handleFileSelect(evt) {
if (!loaded) {
var files = evt.target.files;
var f = files[0];
var objectURL = window.URL.createObjectURL(f);
csound.CopyUrlToLocal(objectURL, "csdfile.csd",
function() {
loaded = true;
});
evt.target.disabled = true;
}
}
function reloadPage() {
location.reload();
}
</script>
</head>
<body>
<H1> CSD Player </H1>
<div id="filebut">
<p> CSD file:
<input type="file" id="files" name="file" /><br><br>
<button id="playButton" disabled="true">PLAY</button>
<button id="resetButton" disabled="true">STOP/Reset</button>
<button id="reloadButton">Load New File</button>
</p>
<textarea class="console" rows="24" id="console">
Csound: not loaded</textarea>
</div>
</body>
</html>
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