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<!-- doctype html -->
<html lang="en-us">
<head>
<meta charset="utf-8">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>ENCODE: WAV to FLAC conversion</title>
<!--
preparing to load the libflac.js library:
* set custom location/path to FLAC_SCRIPT_LOCATION:
needs to be the same paths as the library script, so that the library can
find additional files that it needs to load
* detect support for WebAssembly:
if supported, use wasm library, otherwise the fallback asm.js library
-->
<script src="util/check-params.js" type="text/javascript"></script>
<script src="util/check-support.js" type="text/javascript"></script>
<script src="util/load-script.js" type="text/javascript"></script>
<script type="text/javascript">
var demoType = 'encode';
var global = window;
// check search-param "lib", i.e. "?lib=<variant>":
// -> set different library variants: 'min' | 'dev' | '' (default)
var variant = getLibVariantPathParam();
global.FLAC_SCRIPT_LOCATION = '../dist/';
//check search-param "wasm", if not using WebAssembly should be forced, even if would be supported
var wasmDisable = getDisableWebAssembly();
var lib;
if(!wasmDisable && isWebAssemblySupported()){
lib = 'libflac.'+variant.replace('/', '.')+'wasm.js';
} else {
lib = 'libflac.'+variant.replace('/', '.')+'js';
}
var libFile = global.FLAC_SCRIPT_LOCATION.replace('//','/') + lib;
// load libflac.js library variant and demo scripts after document was loaded:
global.onload = function(){
loadScripts([libFile, demoType+'-func.js', 'util/download-util.js', 'util/data-util.js', 'util/file-handler.js', 'app-'+demoType+'.js'], function(err){
console[err? 'error' : 'info'](err? 'encountered error '+err : 'scripts initialized successfully');
});
};
</script>
<style>
.project-link {
float: right;
}
.drop-zone {
border: 1px red solid;
height: 250px;
}
.drop-hint {
text-align: center;
padding-top: 100px;
}
.hint {
background-color: #C6E7FF;
color: #0094FF;
border-radius: 50%;
height: 1em;
width: 1em;
display: inline-block;
}
.hint:before {
content: ' ? ';
margin-left: 0.25em;
}
.hint.info:before {
content: ' i ';
margin-left: 0.25em;
}
.inline-note {
text-indent: -3em;
margin-left: 3em;
}
</style>
</head>
<body>
<div>
<div class="project-link">Demo for <a href="https://github.com/mmig/libflac.js">libflac.js</a></div>
<h1><a href="encode.html">WAV to FLAC conversion</a></h1>
<p>
Either use the drop zone or the file selection button.
</p>
<p class="inline-note">
<em>NOTE:</em> If the browser plays the WAV-file instead of converting it to FLAC,
change the file-extension before dropping it into the browser
</p>
</div>
<!-- START: section for library variants -->
<div>
<style>
#variants-collapse {
background-color: #DFDFDF;
color: #737373;
border-radius: 50%;
height: 1em;
width: 1em;
display: inline-block;
text-decoration: none;
padding-bottom: 4px;
padding-left: 2px;
padding-right: 2px;
}
.hidden {
display: none;
}
</style>
<h3>Library Variants <a href="#" id="variants-collapse" class="hidden">→</a></h3>
<div id="variants-desc">
<hr/>
<p>
<dl><dt>Technology:</dt>
<dd><em>asm.js</em>: sub-set of JavaScript for optimized execution (if browser supports it; fully "JavaScript compatible")</dd>
<dd><em>WASM</em>: new standard for "web binaries" (WebAssembly), i.e. binary execution format</dd>
</dl>
<dl><dt>Optimizations:</dt>
<dd><em>debug</em>: all debugging output enabled</dd>
<dd><em>release</em>: normal optimizations</dd>
<dd><em>minified</em>: all optimizations enabled</dd>
</dl>
<br/>
</p>
<p>
<h4>Load and Try Library Variants</h4>
<em>Note that some library variants initialize synchronously, and some asynchronously.</em>
</p>
<table>
<thead>
<tr><th align="left">Technology →<br/> Optimization ↓</th><th>asm.js</th><th>WASM</th></tr>
</thead>
<tbody>
<tr><th align="left">release</th><td valign="top"><a href="?lib=&wasm=false&showSelect=true">[release.asmjs]</a><br/><em>sync init</em><br/><em>(default)</em></td><td valign="top"><a href="?lib=&wasm=true&showSelect=true">[release.]wasm</a><br/><em>async init</em></td></tr>
<tr><th align="left">debug</th><td><a href="?lib=dev&wasm=false&showSelect=true">dev[.asmjs]</a><br/><em>sync init</em></td><td><a href="?lib=dev&wasm=true&showSelect=true">dev.wasm</a><br/><em>async init</em></td></tr>
<tr><th align="left">minified</th><td><a href="?lib=min&wasm=false&showSelect=true">min[.asmjs]</a><br/><em>async init</em></td><td><a href="?lib=min&wasm=true&showSelect=true">min.wasm</a><br/><em>async init</em></td></tr>
</tbody>
</table>
<script type="text/javascript">
;(function(){
var btn = document.getElementById('variants-collapse');
btn.classList.remove('hidden');
var descEl = document.getElementById('variants-desc');
if(!/\bshowSelect=true\b/.test(document.location.search)){
descEl.classList.add('hidden');
} else {
btn.innerHTML = ' ↓';
}
btn.addEventListener('click', function(){
var isShow = descEl.classList.contains('hidden');
var func = isShow? 'remove' : 'add';
btn.innerHTML = isShow? ' ↓' : '→';
descEl.classList[func]('hidden');
}, false);
})();
</script>
<hr/>
</div>
</div>
<!-- END: section for library variants -->
<div id="drop_zone" class="drop-zone"><div class="drop-hint">Drop WAV-files here</div></div>
<input type="file" id="files" name="files[]" multiple />
<input type="checkbox" id="check_download" checked>Download <div class="hint" title="download FLAC file after encoding"></div>
<input type="checkbox" id="check_verify" checked>Verify <div class="hint" title="Checksum verification during encoding
(disable for faster encoding)"></div>
<input type="checkbox" id="check_ogg">OGG <div class="hint" title="encode to OGG container file (instead of native FLAC)"></div>
<!--input type="button" id="files_button" value="process file"-->
<output id="list"></output>
</body>
</html>