Initial commit: ACE-Step UI - Open source music generation interface
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fspecii
Executable
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<script>window.update = function(){};</script>
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<title>AudioMass - Frequency Analysis</title>
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<style>
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html,body{height:100%}
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body{padding:0;margin:0;background:#111;position:relative;z-index:2;overflow:hidden;}
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div{position:absolute;top:50%;left:0;right:0;z-index:1;margin-top:-18px;text-align:center;user-select:none;
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font-size:28px;color:#191919;pointer-events:none;font-family:Arial}
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#e, #d, #f{
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cursor:pointer;
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position: absolute;
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top: 7px;
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right: 7px;
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display: block;
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height: 20px;
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z-index: 99999;
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background: #eaeaea;
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left:auto;
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border-radius:4px;
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font-family: sans-serif;
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font-size: 9px;
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width: 82px;
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line-height: 20px;
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padding: 0 6px;
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text-align: center;
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opacity:0.9;
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user-select:none;
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}
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.b #e, .b #d{
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top:12px;
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}
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.b #e, .b #f{
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display:block;
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}
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#e{
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right: 106px;
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width: 10px;
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line-height: 20px;
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padding: 0px 6px;
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text-align: center;
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opacity: 0.9;
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display:none;
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}
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#f{
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left: 0;
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right: 0;
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top: 0;
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padding: 0;
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width: 100%;
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line-height: 0;
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border-radius: 0;
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height: 4px;
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background: #333;
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display:none;
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user-select:none;
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-moz-user-select:none;
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}
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.c #f, #f:hover{
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background:#3C3C3C;
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}
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</style>
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<meta charset="utf-8" />
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</head>
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<body>
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<canvas id="fr" width="600" height="188" style="width:100%;height:100%;display:block"></canvas>
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<div>FREQUENCY ANALYSER</div>
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<a id="d" onclick="dock()">DOCK INTERFACE</a>
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<a id="e" onclick="remove()">X</a>
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<a id="f" onmousedown="drag(event)"></a>
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<script>
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var d = document;
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var w = window;
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var iframe = location.href.indexOf('?iframe') === -1 ? 0 : 1;
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var canvas = d.getElementById('fr');
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var ctx = canvas.getContext('2d', {alpha:true, antialias:false});
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w.remove = function (){};
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if (iframe) {
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d.body.className = 'b';
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w.remove = function () {
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w.parent.PKAudioEditor.ui.Dock ('RequestShowFreqAn', 'eq', [1, 1]);
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};
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};
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w.drag = function ( e ) {
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e.preventDefault ();
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e.stopPropagation ();
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w.parent.PKAudioEditor.ui.Dock ('RequestDragI', 'eq');
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};
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w.dock = function () {
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if (!iframe)
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{
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if (!w.opener || !w.opener.PKAudioEditor) {
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return ;
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}
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w.opener.PKAudioEditor.ui.Dock ('RequestShowFreqAn', 'eq', [1, 1]);
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w.close && w.close ();
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}
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else
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{
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var frm = w.parent.document.getElementById ('pk_fr' + 'eq');
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var t = 1;
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if (frm && frm.getBoundingClientRect) {
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var rect = frm.getBoundingClientRect();
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t = [(w.parent.screenLeft + rect.left + 100)||0, (w.parent.screenTop + rect.top + 25)||0];
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}
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w.parent.PKAudioEditor.ui.Dock ('RequestShowFreqAn', 'eq', [t, 0]);
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}
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};
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setTimeout(function () {
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if (!iframe)
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{
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if (!w.opener || !w.opener.PKAudioEditor) return ;
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}
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var WIDTH = w.innerWidth, HEIGHT = w.innerHeight;
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if (canvas.width != WIDTH)
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{
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canvas.width = WIDTH;
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canvas.height = HEIGHT;
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}
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var bufferLength = 240;
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var value_changed = false;
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ctx.clearRect (0, 0, WIDTH, HEIGHT);
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function draw( similarity ) {
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var WIDTH = window.innerWidth, HEIGHT = window.innerHeight;
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if (canvas.width != WIDTH || canvas.height != HEIGHT)
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{
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canvas.width = WIDTH;
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canvas.height = HEIGHT;
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}
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ctx.fillStyle = 'rgb(0, 0, 0)';
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ctx.fillRect(0, 0, WIDTH, HEIGHT);
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var barWidth = (WIDTH / bufferLength);
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var barHeight;
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var x = 0;
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for(var i = 0; i < bufferLength; i += 1) {
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barHeight = similarity[i * 2]; // ? similarity[i] : 0;
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// bar height normalize with 255
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var newheight = ((barHeight / 256) * HEIGHT) >> 0;
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ctx.fillStyle = 'rgb(' + (barHeight + 100) + ',50,50)';
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ctx.fillRect (x,HEIGHT - newheight, barWidth, newheight);
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x += barWidth;// + 1;
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}
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value_changed = false;
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};
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w.draw = draw;
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w.onunload = function () {
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w.destroy && w.destroy ( iframe );
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w.destroy = null;
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};
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w.update = function (freq_arr) {
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if (!freq_arr)
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ctx.clearRect (0, 0, WIDTH, HEIGHT);
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else {
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if (value_changed) return ;
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value_changed = true;
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window.requestAnimationFrame(function () {
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draw (freq_arr);
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});
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}
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};
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var last_press = 0;
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document.addEventListener ('keypress', function ( e ) {
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if (e.keyCode !== 32) return ;
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e.preventDefault ();
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e.stopPropagation ();
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if (e.timeStamp - last_press < 100) {
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return ;
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}
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last_press = e.timeStamp;
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if (!iframe) {
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w.opener && w.opener.PKAudioEditor.ui.Dock ('RequestKeyDown', 32);
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}
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else {
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w.parent && w.parent.PKAudioEditor.ui.Dock ('RequestKeyDown', 32);
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}
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});
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}, 60);
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</script>
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</body>
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</html>
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