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<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>LibMikMod Web Audio Example (with options)</title>
<style type="text/css">
body {
font-family: sans-serif;
}
</style>
</head>
<body>
<noscript>Sorry! You need to enable JavaScript in order to run the example :(</noscript>
<h1>
LibMikMod Web Audio Example (with options)
</h1>
<h2>
Load Options <small>(can only be changed when (re)loading a module)</small>
</h2>
<p>
<label>
<input type="checkbox" id="inputHqMixer" checked />
Use high-quality (slower) software mixer
</label>
</p>
<p>
<label>
<input type="checkbox" id="inputWrap" />
Wrap module
</label>
</p>
<p>
<label>
<input type="checkbox" id="inputLoop" />
Allow module to loop
</label>
</p>
<p>
<label>
<input type="checkbox" id="inputFadeout" checked />
Volume fade out during last pattern
</label>
</p>
<h2>
General Options
</h2>
<p>
<label for="inputReverb">Reverb (0 to 15)</label>
<br />
<input id="inputReverb" type="number" min="0" max="15" value="0" />
</p>
<p>
<label>
<input type="checkbox" id="inputInterpolation" checked />
Interpolation
</label>
</p>
<p>
<label>
<input type="checkbox" id="inputNoiseReduction" checked />
Noise reduction
</label>
</p>
<h2>
Module File
</h2>
<p>
<label for="inputModuleFile">Module file (669, amf, asy, dsm, far, gdm, gt2, imf, it, m15, med, mod, mtm, okt, s3m, stm, stx, ult, umx, uni, xm)</label>
<br />
<input type="file" id="inputModuleFile" accept=".669,.amf,.asy,.dsm,.far,.gdm,.gt2,.imf,.it,.m15,.med,.mod,.mtm,.okt,.s3m,.stm,.stx,.ult,.umx,.uni,.xm" />
</p>
<h2>
Commands
</h2>
<p>
<button type="button" onclick="load()" id="buttonLoad" disabled>(Re)Load module file</button>
<button type="button" onclick="changeGeneralOptions()" id="buttonChangeGeneralOptions" disabled>Change general options</button>
</p>
<p>
<button type="button" onclick="play()" id="buttonPlay" disabled>Play</button>
<button type="button" onclick="pause()" id="buttonPause" disabled>Pause</button>
</p>
<h2>
Song information
</h2>
<pre id="songInfo"></pre>
<h2>
More information
</h2>
<pre id="versionInfo"></pre>
<ul>
<li>
<a target="_blank" href="https://github.com/sezero/mikmod">https://github.com/sezero/mikmod</a>
</li>
<li>
<a target="_blank" href="https://github.com/carlosrafaelgn/mikmod/tree/master/libmikmod/webaudio">https://github.com/carlosrafaelgn/mikmod/tree/master/libmikmod/webaudio</a>
</li>
</ul>
<script type="text/javascript" src="dist/libmikmod.min.js"></script>
<script type="text/javascript">
//<![CDATA[
"use strict";
// According to Can I Use, we can assume that if a browser supports AudioWorkletNode it
// also supports WebAssembly (but not the other way around).
// Promises, ES6 and all other dependencies are also present in a browser which
// supports these two features:
// https://caniuse.com/wasm
// https://caniuse.com/mdn-api_audioworkletnode
if (!LibMikMod.isSupported())
alert("Sorry, but your browser does not meet the minimum requirements :(");
var inputReverb = document.getElementById("inputReverb"),
inputInterpolation = document.getElementById("inputInterpolation"),
inputNoiseReduction = document.getElementById("inputNoiseReduction"),
inputHqMixer = document.getElementById("inputHqMixer"),
inputWrap = document.getElementById("inputWrap"),
inputLoop = document.getElementById("inputLoop"),
inputFadeout = document.getElementById("inputFadeout"),
inputModuleFile = document.getElementById("inputModuleFile"),
buttonChangeGeneralOptions = document.getElementById("buttonChangeGeneralOptions"),
buttonPlay = document.getElementById("buttonPlay"),
buttonPause = document.getElementById("buttonPause"),
songInfo = document.getElementById("songInfo"),
fileLoaded = false,
audioNode = null,
audioContext = new AudioContext();
audioContext.suspend();
if (LibMikMod.isSupported())
LibMikMod.init(audioContext, "dist/").then(function () {
document.getElementById("versionInfo").textContent = "WEB_VERSION: " + LibMikMod.WEB_VERSION + "\nLIB_VERSION: " + LibMikMod.LIB_VERSION;
document.getElementById("buttonLoad").removeAttribute("disabled");
}, function (reason) {
alert("Error loading LibMikMod: " + reason);
});
function cleanUp() {
songInfo.textContent = "";
buttonChangeGeneralOptions.setAttribute("disabled", "disabled");
buttonPlay.setAttribute("disabled", "disabled");
buttonPause.setAttribute("disabled", "disabled");
fileLoaded = false;
audioContext.suspend();
if (audioNode)
audioNode.disconnect();
}
function load() {
if (!LibMikMod.initialized)
return;
if (!inputModuleFile.files || !inputModuleFile.files.length) {
alert("Please, select a file first");
return;
}
cleanUp();
LibMikMod.loadModule({
audioContext: audioContext,
source: inputModuleFile.files[0],
onload: moduleOnload,
onerror: moduleOnerror,
onended: moduleOnended,
hqMixer: inputHqMixer.checked,
wrap: inputWrap.checked,
loop: inputLoop.checked,
fadeout: inputFadeout.checked,
reverb: parseInt(inputReverb.value),
interpolation: inputInterpolation.checked,
noiseReduction: inputNoiseReduction.checked
});
}
function changeGeneralOptions() {
LibMikMod.changeGeneralOptions({
reverb: parseInt(inputReverb.value),
interpolation: inputInterpolation.checked,
noiseReduction: inputNoiseReduction.checked
});
}
function play() {
if (fileLoaded)
audioContext.resume();
}
function pause() {
if (fileLoaded)
audioContext.suspend();
}
function moduleOnload(newAudioNode) {
songInfo.textContent =
"Song name: " + LibMikMod.infoSongName + "\n" +
"Module type: " + LibMikMod.infoModType + "\n" +
"Comment: " + LibMikMod.infoComment
;
newAudioNode.connect(audioContext.destination);
audioNode = newAudioNode;
buttonChangeGeneralOptions.removeAttribute("disabled");
buttonPlay.removeAttribute("disabled");
buttonPause.removeAttribute("disabled");
fileLoaded = true;
audioContext.resume();
}
function moduleOnerror(errorCode, reason) {
songInfo.textContent = "";
switch (errorCode) {
case LibMikMod.ERROR_FILE_READ:
alert("Error reading the file: " + reason);
break;
case LibMikMod.ERROR_MODULE_LOAD:
alert("Error loading the module: " + reason);
break;
//case LibMikMod.ERROR_PLAYBACK:
default:
alert("Error during module playback: " + reason);
break;
}
}
function moduleOnended() {
cleanUp();
alert("Playback ended!");
}
//]]>
</script>
</body>
</html>
|
