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funstim.html
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<div class="container">
<h1>Convert funscript to phase modulated MP3</h1>
<h4>Mods by <a href="https://github.com/astoniab/funstim/">astonia</a></h4>
<hr>
<h3>Settings</h3>
<div class="row">
<div class="form col-6">
<div class="form-group">
<label class="form-label">Fade in/out</label>
<select class="form-control" id="fade">
<option value="0">Disabled</option>
<option value="1000">1 second</option>
<option value="2000">2 seconds</option>
<option value="5000" selected>5 seconds</option>
</select>
</div>
<div class="form-group">
<label class="form-label">Sample rate</label>
<select class="form-control" id="sampleRate">
<option value="8000">8000 Hz (Fast)</option>
<option value="22050" selected>22050 Hz</option>
<option value="44100">44100 Hz (Slow)</option>
</select>
</div>
<div class="form-group">
<label class="form-label">Frequency</label>
<div class="input-group">
<input class="form-control" type="text" id="frequency" value="743">
<div class="input-group-append">
<span class="input-group-text">Hz</span>
</div>
</div>
<small class="form-text text-muted">
Enter a single frequency or a comma-separated list of frequencies to
combine
</small>
</div>
<div class="form-check ml-2">
<input class="form-check-input" type="checkbox" id="polarity">
<label class="form-check-label">Inverted</label>
</div>
<div class="form-check ml-2">
<input class="form-check-input" type="checkbox" id="doubletime">
<label class="form-check-label">Double time (Every action is one full up & down motion)</label>
</div>
<div class="form-check ml-2">
<input class="form-check-input" checked type="checkbox" id="fullrange">
<label class="form-check-label">Expand to full range</label>
</div>
<div class="form-check ml-2">
<input class="form-check-input" checked type="checkbox" id="fadeonpause">
<label class="form-check-label">Fade out during pauses/slow sections</label>
</div>
<div class="form-check ml-2">
<input class="form-check-input" type="checkbox" id="debug">
<label class="form-check-label">Output amplitude & phase envelopes (FOR TESTING ONLY)</label>
</div>
<div class="form-group">
<label class="form-label">This is to limit the volume of funscript at extremes (to reduce too strong
sensations)</label>
<table class="table table-striped table-bordered" style="width: 600px;">
<thead>
<tr>
<th>Volume Mapping for position</th>
<th>Volume at 0</th>
<th>Volume at center</th>
<th>Volume at 100</th>
</tr>
</thead>
<tbody>
<tr>
<th>Left CH</th>
<td>
<input id="map_left_min" type="number" min="0" max="100" value="80" />
</td>
<td>
<input id="map_left_center" type="number" min="0" max="100" value="100" />
</td>
<td>
<input id="map_left_max" type="number" min="0" max="100" value="80" />
</td>
</tr>
<tr>
<th>Right CH</th>
<td>
<input id="map_right_min" type="number" min="0" max="100" value="80" />
</td>
<td>
<input id="map_right_center" type="number" min="0" max="100" value="100" />
</td>
<td>
<input id="map_right_max" type="number" min="0" max="100" value="80" />
</td>
</tr>
<tr>
<th>Center is at position</th>
<td colspan="1">
<input id="map_center_pos" type="number" min="25" max="75" value="50" />
</td>
<td>
<input type="button" title="Disable" value="Disable" onclick="resetMapping()">
</td>
</tr>
</tbody>
</table>
</div>
<div class="form-group">
<label class="form-label">This is to limit the movements of funscript to extremes (to reduce too strong
sensations)</label>
<table class="table table-striped table-bordered" style="width: 600px;">
<thead>
<tr>
<th>Funscript normalization</th>
<th>Min position (0)</th>
<th>Max position (100)</th>
</tr>
</thead>
<tbody>
<tr>
<th>Normalize to</th>
<td>
<input id="nor_min" type="number" min="0" max="35" value="20" />
</td>
<td>
<input id="nor_max" type="number" min="65" max="100" value="80" />
</td>
</tr>
</tbody>
</table>
</div>
<div class="row">
<h4 class="col">Custom Generation Settings</h4>
</div>
<div class="row">
<div class="form-group col">
Generate an output file for every combination of stroke parameters between min and max. Settings from above are still in effect.
</div>
</div>
<div class="row">
<div class="form-group col">
<label class="form-label">Min SPM</label>
<input class="form-control" type="number" min="0" id="minspm" value="30" title="Minimum Strokes Per Minute">
</div>
<div class="form-group col">
<label class="form-label">Max SPM</label>
<input class="form-control" type="number" min="0" id="maxspm" value="120" title="Maximum Strokes Per Minute">
</div>
<div class="form-group col">
<label class="form-label">Inc SPM</label>
<input class="form-control" type="number" min="0" id="incspm" value="30" title="Increment Strokes Per Minute">
</div>
</div>
<div class="row">
<div class="form-group col">
<label class="form-label">Min Pos</label>
<input class="form-control" type="number" min="0" max="100" id="minpos" value="0" title="Minimum Position">
</div>
<div class="form-group col">
<label class="form-label">Max Pos</label>
<input class="form-control" type="number" min="0" max="100" id="maxpos" value="100" title="Maximum Position">
</div>
<div class="form-group col">
<label class="form-label">Inc Pos</label>
<input class="form-control" type="number" min="0" max="100" id="incpos" value="10" title="Increment Position">
</div>
</div>
<div class="form-group">
<label class="form-label">Custom Stroke Timing</label>
<small class="text-muted">overrides generation parameters above</small>
<div class="input-group">
<input class="form-control" type="text" id="customtiming" value="" title="Custom Timing" placeholder="time offset, position pairs - e.g. 500,20,1000,90">
</div>
<small class="form-text text-muted">Enter time offset (ms) and position pairs for each action separated by commas. When the last action is reached, the cycle will start again at the beginning.</small>
<small class="form-text text-muted">Each value in the pair can be further modified by appending a : and then an increment modifier to adjust the value for the next cycle. A second : and value can be added to stop the increment when a specific value is reached. A third : and value (0, 1, or 2) can be added to indicate if the increment should be reversed or start over when the stop target is reached. 0 means the value will stop incrementing, 1 means the increment will be reversed until it's back to the original value (and then continue reversing between the values), and 2 means it will jump back to the original value and continue incrementing from there.</small>
<small class="form-text text-muted">e.g. "500,20:-1,1000:-10,80:+1:90:1" = 1st action at +500ms at position 20 then decrement position by 1, 2nd action at +1000ms at position 80, then decrement ms by 10 and increment position by 1 until it gets to 90 then reverse until it's back at 80</small>
</div>
<div class="row col-4">
<div class="form-group">
<label class="form-label">Output Duration</label>
<div class="input-group">
<input class="form-control" type="text" id="duration" value="300" title="Duration in seconds">
<div class="input-group-append"><span class="input-group-text">sec</span></div>
</div>
</div>
</div>
</div>
</div>
<hr>
<h3>Select one or more .funscript file(s) to be rendered</h3>
<input type="file" id="file-input" multiple>
<hr>
<h3>Custom Output Generation</h3>
<div class="form-group">
<input type="button" id="generatecustom" value="Generate Custom">
</div>
<hr>
<div id="progress"></div>
<h3>Save/Load Settings</h3>
<div class="row">
<div class="form col-6">
<div class="form-group">
<div class="input-group">
<input class="form-control" type="text" id="settings" value="" title="Settings JSON object (Save/Load)" placeholder="Click Save and copy resulting text, or paste text and click Load">
</div>
</div>
<div class="form-group row">
<div class="col text-center">
<input type="button" value="Save" id="savesettings">
</div>
<div class="col text-center">
<input type="button" value="Load" id="loadsettings">
</div>
<div class="col text-center">
<input type="button" value="Copy URL" id="copyurl">
</div>
</div>
</div>
</div>
</div>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"
integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"
integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"
integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
<script src="mp3tag.min.js"></script>
<script>
function resetMapping(e) {
document.getElementById('map_left_min').value = 100;
document.getElementById('map_left_center').value = 100;
document.getElementById('map_left_max').value = 100;
document.getElementById('map_right_min').value = 100;
document.getElementById('map_right_center').value = 100;
document.getElementById('map_right_max').value = 100;
document.getElementById('map_center_pos').value = 50;
}
// ArrayBuffer to Array
function arraybufftoarray(buf) {
let a=[];
a.push(buf);
return a;
}
// Iterable object to Array
function objtoarray(obj,arr) {
arr = arr || [];
if(typeof(obj)==='number') {
arr.push(obj);
} else {
for(const prop in obj) {
objtoarray(obj[prop],arr);
}
}
return arr;
}
function updateRow(row, text, status, closeable) {
row.className = "alert alert-" + status + " " + (closeable ? "alert-dismissible " : "") + "fade show";
row.innerHTML = text + (closeable ? "<button type='button' class='close' data-dismiss='alert'><span>×</span></button>" : "");
}
// create output based on existing funscript uploaded to script
function readFiles(e) {
let progress = document.getElementById('progress');
for (let file of e.target.files) {
let fileName = file.name.split(".").slice(0, -1).join(".");
let reader = new FileReader();
let row = document.createElement('div');
updateRow(row, "0% - " + fileName, "primary", false);
progress.appendChild(row);
reader.onload = event => {
let msg = {};
msg.fade = document.getElementById('fade').value;
msg.sampleRate = document.getElementById('sampleRate').value;
msg.bitrate = 192;
msg.frequency = document.getElementById('frequency').value.split(",");
msg.amplitude = 0.9;
msg.polarity = document.getElementById('polarity').checked ? 1 : -1;
msg.doubletime = document.getElementById('doubletime').checked;
msg.fullrange = document.getElementById('fullrange').checked;
msg.fadeonpause = document.getElementById('fadeonpause').checked;
msg.debug = document.getElementById('debug').checked;
msg.volumeMap = {
center: 0.5,
left: { min: 0.6, center: 1, max: 0.8 },
right: { min: 0.8, center: 1, max: 0.6 }
};
msg.volumeMap.center = document.getElementById('map_center_pos').value / 100.0;
msg.volumeMap.left.min = document.getElementById('map_left_min').value / 100.0;
msg.volumeMap.left.center = document.getElementById('map_left_center').value / 100.0;
msg.volumeMap.left.max = document.getElementById('map_left_max').value / 100.0;
msg.volumeMap.right.min = document.getElementById('map_right_min').value / 100.0;
msg.volumeMap.right.center = document.getElementById('map_right_center').value / 100.0;
msg.volumeMap.right.max = document.getElementById('map_right_max').value / 100.0;
msg.nor_min = document.getElementById('nor_min').value / 1.0;
msg.nor_max = document.getElementById('nor_max').value / 1.0;
msg.funscript = event.target.result;
let worker = new Worker("./funstim.js");
worker.onmessage = m => {
m = m.data;
updateRow(row, m.pctDone + "% - " + fileName, m.status, m.pctDone == 100);
if (m.mp3Data) {
const mp3tag = new MP3Tag(new Uint8Array(objtoarray(m.mp3Data)).buffer, true);
mp3tag.read();
if(mp3tag.error!='') throw new Error(mp3tag.error);
mp3tag.tags.v2={};
mp3tag.tags.v2.COMM=[{language: 'eng', descriptor: '', text: 'Converted from "'+file.name+'"\n'+getsettingsjson()}];
mp3tag.save({strict:true, id3v2: { padding: 4096}});
download(fileName + ".mp3", arraybufftoarray(mp3tag.buffer));
}
};
worker.onerror = e => {
console.log(e);
updateRow(row, "Error - " + fileName + ": " + e.message, "danger", true);
};
worker.postMessage(msg);
};
reader.readAsText(file);
}
document.getElementById('file-input').value = "";
}
// create output from custom funscript
function createmp3(fsobj,fileName,comment) {
let msg = {};
let row = document.createElement('div');
updateRow(row, fileName, "primary", false);
progress.appendChild(row);
msg.fade = document.getElementById('fade').value;
msg.sampleRate = document.getElementById('sampleRate').value;
msg.bitrate = 192;
msg.frequency = document.getElementById('frequency').value.split(",");
msg.amplitude = 0.9;
msg.polarity = document.getElementById('polarity').checked ? 1 : -1;
msg.doubletime = document.getElementById('doubletime').checked;
msg.fullrange = document.getElementById('fullrange').checked;
msg.fadeonpause = document.getElementById('fadeonpause').checked;
msg.debug = document.getElementById('debug').checked;
msg.volumeMap = {
center: 0.5,
left: { min: 1, center: 1, max: 1 },
right: { min: 1, center: 1, max: 1 }
};
msg.volumeMap.center = document.getElementById('map_center_pos').value / 100.0;
msg.volumeMap.left.min = document.getElementById('map_left_min').value / 100.0;
msg.volumeMap.left.center = document.getElementById('map_left_center').value / 100.0;
msg.volumeMap.left.max = document.getElementById('map_left_max').value / 100.0;
msg.volumeMap.right.min = document.getElementById('map_right_min').value / 100.0;
msg.volumeMap.right.center = document.getElementById('map_right_center').value / 100.0;
msg.volumeMap.right.max = document.getElementById('map_right_max').value / 100.0;
msg.nor_min = document.getElementById('nor_min').value / 1.0;
msg.nor_max = document.getElementById('nor_max').value / 1.0;
msg.funscript = fsobj;
let worker = new Worker("funstim.js");
worker.onmessage = m => {
m = m.data;
updateRow(row, m.pctDone + "% - " + fileName, m.status, m.pctDone == 100);
if(m.mp3Data) {
const mp3tag = new MP3Tag(new Uint8Array(objtoarray(m.mp3Data)).buffer, true);
mp3tag.read();
if(mp3tag.error!='') throw new Error(mp3tag.error);
mp3tag.tags.v2={};
mp3tag.tags.v2.COMM=[{language: 'eng', descriptor: '', text: comment}];
mp3tag.save({strict:true, id3v2: { padding: 4096}});
download(fileName + ".mp3", arraybufftoarray(mp3tag.buffer));
}
};
worker.onerror = e => {
console.log(e);
updateRow(row, "Error - " + fileName + ": " + e.message, "danger", true);
};
worker.postMessage(msg);
}
// create custom funscript based on custom timing settings
function createcustomtimingfs(ct,duration)
{
let fs={};
fs.actions=[];
let ms=0;
ctpos=0;
do {
action={};
action.at=(ms+ct[ctpos].currentat);
action.pos=ct[ctpos].currentpos;
fs.actions.push(action);
ms+=ct[ctpos].currentat;
if(ct[ctpos].incat) {
let inc=(ct[ctpos].incat*ct[ctpos].incatmult);
let minat=Math.max(Math.min(ct[ctpos].startat,ct[ctpos].stopat || ct[ctpos].startat),0); // must be at least 0
let maxat=Math.max(Math.max(ct[ctpos].startat,ct[ctpos].stopat || ct[ctpos].startat),0); // must be at least 0
ct[ctpos].currentat+=inc;
if(inc<0 && ct[ctpos].currentat<minat) {
ct[ctpos].currentat=minat;
if(ct[ctpos].revat && ct[ctpos].revat==1) {
ct[ctpos].incatmult=-ct[ctpos].incatmult;
}
}
else if(inc>0 && ct[ctpos].currentat>maxat) {
ct[ctpos].currentat=maxat;
if(ct[ctpos].revat && ct[ctpos].revat==1) {
ct[ctpos].incatmult=-ct[ctpos].incatmult;
} else if(ct[ctpos].revat && ct[ctpos].revat==2) {
ct[ctpos].currentat=ct[ctpos].startat;
}
}
}
if(ct[ctpos].incpos)
{
let inc=(ct[ctpos].incpos*ct[ctpos].incposmult);
let minpos=Math.max(Math.min(ct[ctpos].startpos,ct[ctpos].stoppos || ct[ctpos].startpos),0); // must be at least 0
let maxpos=Math.min(Math.max(ct[ctpos].startpos,ct[ctpos].stoppos || ct[ctpos].startpos),100); // must be at most 100
ct[ctpos].currentpos+=inc;
if(inc<0 && ct[ctpos].currentpos<minpos) {
ct[ctpos].currentpos=minpos;
if(ct[ctpos].revpos && ct[ctpos].revpos==1) {
ct[ctpos].incposmult=-ct[ctpos].incposmult;
}
}
else if(inc>0 && ct[ctpos].currentpos>maxpos) {
ct[ctpos].currentpos=maxpos;
if(ct[ctpos].revpos && ct[ctpos].revpos==1) {
ct[ctpos].incposmult=-ct[ctpos].incposmult;
} else if(ct[ctpos].revpos && ct[ctpos].revpos==2) {
ct[ctpos].currentpos=ct[ctpos].startpos;
}
}
}
ctpos++;
if(ctpos>=ct.length) {
ctpos=0;
}
}while(ms<=duration*1000);
return fs;
}
function clickGenerate(e) {
let minspm=parseInt(document.getElementById('minspm').value);
let maxspm=parseInt(document.getElementById('maxspm').value);
let incspm=parseInt(document.getElementById('incspm').value);
let minpos=parseInt(document.getElementById('minpos').value);
let maxpos=parseInt(document.getElementById('maxpos').value);
let incpos=parseInt(document.getElementById('incpos').value);
let duration=parseInt(document.getElementById('duration').value);
let customtimingstr=document.getElementById('customtiming').value;
customtiming=[];
if(customtimingstr!='') {
customtimingarr=customtimingstr.split(',');
for(let i=0; i<customtimingarr.length; i+=2) {
let atvals=customtimingarr[i].split(':');
let posvals=customtimingarr[i+1].split(':');
let ct={};
ct.startat=parseFloat(atvals[0]);
ct.currentat=parseFloat(atvals[0]);
if(atvals.length>1) {
ct.incat=parseFloat(atvals[1]);
ct.incatmult=1;
}
if(atvals.length>2) {
ct.stopat=parseFloat(atvals[2]);
}
if(atvals.length>3) {
ct.revat=parseInt(atvals[3]);
}
ct.startpos=parseFloat(posvals[0]);
ct.currentpos=parseFloat(posvals[0]);
if(posvals.length>1) {
ct.incpos=parseFloat(posvals[1]);
ct.incposmult=1;
}
if(posvals.length>2) {
ct.stoppos=parseFloat(posvals[2]);
}
if(posvals.length>3) {
ct.revpos=parseInt(posvals[3]);
}
customtiming.push(ct);
}
}
if(minspm>maxspm) {
minspm=maxspm;
}
if(incspm<1) {
incspm=1;
}
if(minpos>maxpos) {
minpos=maxpos;
}
minpos=Math.min(Math.max(minpos,0),100); // min pos between 0 and 100
maxpos=Math.min(Math.max(maxpos,0),100); // max pos between 0 and 100
if(incpos<1) {
incpos=1;
}
if(customtiming.length>0)
{
let fileName = 'custom_'+document.getElementById('frequency').value.split(",").join("_")+'hz_'+customtiming.length+'action';
createmp3(JSON.stringify(createcustomtimingfs(customtiming,duration)),fileName,'Custom generation by funstim script converter\n'+getsettingsjson());
}
else
{
for(let spm=minspm; spm<=maxspm; spm+=incspm)
{
for(let p1=minpos; p1<=maxpos; p1+=incpos)
{
for(let p2=p1+incpos; p2<=maxpos; p2+=incpos)
{
let actiontime=60000/(spm*2);
let fs={}; // empty object to build the funscript data
fs.actions=[];
console.log('spm='+spm+' '+p1+' - '+p2+' at='+actiontime);
let ms=0; // current pos
do
{
fs.actions.push({at:ms,pos:p1});
fs.actions.push({at:(ms+actiontime),pos:p2});
ms+=(actiontime*2);
}while(ms<=duration*1000);
let fileName = 'stroke_'+spm+'spm_'+document.getElementById('frequency').value.split(",").join("_")+'hz_'+p1+'_'+p2;
createmp3(JSON.stringify(fs),fileName,'Custom generation by funstim script converter\n'+getsettingsjson());
}
}
}
}
}
function getsettingsjson()
{
inp=document.getElementsByTagName('input');
sel=document.getElementsByTagName('select');
settings=[];
for(let i=0; i<inp.length; i++) {
if(((inp[i].type || '') !='button') && ((inp[i].type || '') !='file') && inp[i].id && inp[i].value && inp[i].id!='settings') {
settings.push({id:inp[i].id,val:(inp[i].type=='checkbox' ? inp[i].checked : inp[i].value)});
}
}
for(let i=0; i<sel.length; i++) {
if(sel[i].id && sel[i].value) {
settings.push({id:sel[i].id,val:sel[i].value});
}
}
return JSON.stringify(settings);
}
function clickSaveSettings(e) {
document.getElementById('settings').value=getsettingsjson();
}
function clickLoadSettings(e) {
if(document.getElementById('settings').value=='') {
alert('You must paste previously saved settings into the settings box to load them!');
return;
}
try {
settings=JSON.parse(document.getElementById('settings').value);
} catch(e) {
alert('Unable to load settings. Settings not in expected format.');
}
for(let i=0; i<settings.length; i++)
{
el=document.getElementById(settings[i].id);
if(el) {
if(el.type=='checkbox') {
el.checked=settings[i].val;
}
else {
el.value=settings[i].val;
}
}
}
}
function clickCopyURL(e) {
let url = new URL(document.URL);
let params = new URLSearchParams(url.search);
params.set('settings', getsettingsjson());
url.search=params.toString();
let origval=document.getElementById('settings').value;
document.getElementById('settings').value=url;
document.getElementById('settings').select();
document.execCommand('copy');
document.getElementById('settings').value=origval;
}
document.getElementById('file-input').addEventListener('change', readFiles, false);
document.getElementById('generatecustom').addEventListener('click', clickGenerate, false);
document.getElementById('savesettings').addEventListener('click', clickSaveSettings, false);
document.getElementById('loadsettings').addEventListener('click', clickLoadSettings, false);
document.getElementById('copyurl').addEventListener('click', clickCopyURL, false);
let url=new URL(document.URL);
if(url.search) {
let params=new URLSearchParams(url.search);
if(params.get('settings')) {
document.getElementById('settings').value=params.get('settings');
clickLoadSettings();
}
}
function download(filename, text) {
let blob = new Blob(text, {
type: "audio/mp3"
});
let link = document.createElement('a');
link.href = window.URL.createObjectURL(blob);
link.download = filename;
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
}
</script>