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iframe.html
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<html>
<head>
<title>IFRAME Example</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
<meta content="text/html;charset=utf-8" http-equiv="Content-Type" />
<link rel="stylesheet" href="./iframe.css" />
<script src="iframe-examples.js"></script>
<script>
const ExpandableCards = {};
function loadIframe(){ // this is pretty important if you want to avoid camera permission popup problems. You can also call it automatically via: <body onload=>loadIframe();"> , but don't call it before the page loads.
var exampleId = generateId();
// Keep track of which API cards are opened vs closed
ExpandableCards[exampleId] = {
iframe: false,
companion: false,
}
var iframesrc = document.getElementById("viewlink").value;
if (!(iframesrc.startsWith("?") || iframesrc.startsWith("&") || iframesrc.startsWith("http"))){
if (iframesrc.split(".").length>1){
iframesrc = "https://"+iframesrc;
}
}
var container = document.getElementById("container");
var iframe = newElement("iframe", {
allow: "document-domain;encrypted-media;sync-xhr;usb;web-share;cross-origin-isolated;accelerometer;midi;geolocation;autoplay;camera;microphone;fullscreen;picture-in-picture;display-capture;accelerometer;midi;geolocation;autoplay;gyroscope;screen-wake-lock;",
src: addUrlParams(iframesrc, ["cleanoutput", "transparent", "hidemenu"])
});
iframe.setAttribute("allowtransparency", "true");
iframe.setAttribute("crossorigin", "anonymous");
iframe.setAttribute("credentialless", "true");
var iframeExample = newElement("div", { id: exampleId, classList: "iframe-example" });
var exampleHeader = newElement("div", { classList: "example-header", innerHTML: iframesrc });
var exampleBody = newElement("div", { classList: "example-body" });
var outputContainer = newElement("div", { classList: "output-container" });
var customPostContainer = newElement("div", { classList: "custom-post" });
var customPostInput = newElement("input", {
classList: "custom-post-input", type: "text", placeholder: "Post Message (format as a JSON object}"
});
var mainLog = newElement("div", { id: exampleId + "-logs", classList: "main-log" });
var streamDataLogs = newElement("div", { classList: "stream-data-logs" } );
var controlsContainer = getExampleControls();
var targetGuest = getGuestAPIGenerator();
var customPostSend = newElement("button", {
innerText: "POST",
onclick: function() {
try {
const message = JSON.parse(customPostInput.value);
postMessage(message, '*');
} catch (error) {
alert(error)
}
}
});
customPostContainer.append(customPostInput, customPostSend);
controlsContainer.appendChild(targetGuest);
outputContainer.append(iframe, mainLog, customPostContainer);
exampleBody.append(controlsContainer, outputContainer, streamDataLogs);
iframeExample.append(exampleHeader, exampleBody);
container.prepend(iframeExample);
var media = {};
media.tracks = {};
media.streams = {};
window.addEventListener('messageerror', e => {
console.error(e);
});
//////////// LISTEN FOR EVENTS
var eventMethod = window.addEventListener ? "addEventListener" : "attachEvent";
var eventer = window[eventMethod];
var messageEvent = eventMethod === "attachEvent" ? "onmessage" : "message";
eventer(messageEvent, function (e) {
if (e.source != iframe.contentWindow){return} // reject messages send from other iframes
if (typeof e.data !== "object"){
console.log(e.data);
return;
}
if (e.data.frame){ // add `&sendframes` to the view link to trigger this event; it lets you capture video/audio from the parent window
if (!media.tracks[e.data.trackID]){
media.tracks[e.data.trackID] = {};
media.tracks[e.data.trackID].generator = new MediaStreamTrackGenerator({kind:e.data.kind});
media.tracks[e.data.trackID].stream = new MediaStream([media.tracks[e.data.trackID].generator]);
media.tracks[e.data.trackID].frameWriter = media.tracks[e.data.trackID].generator.writable.getWriter();
media.tracks[e.data.trackID].frameWriter.write(e.data.frame);
if (!media.streams[e.data.streamID]){
media.streams[e.data.streamID] = document.createElement("video");
media.streams[e.data.streamID].id = "video_"+e.data.streamID;
media.streams[e.data.streamID].autoplay = true;
media.streams[e.data.streamID].muted = true;
setTimeout(function(ele){ele.controls=true;},3000, media.streams[e.data.streamID]);
media.streams[e.data.streamID].srcObject = media.tracks[e.data.trackID].stream;
mainLog.appendChild(media.streams[e.data.streamID]);
} else {
if (e.data.kind=="video"){
media.streams[e.data.streamID].srcObject.getVideoTracks().forEach(trk=>{
media.streams[e.data.streamID].srcObject.removeTrack(trk);
});
} else if (e.data.kind=="audio"){
media.streams[e.data.streamID].srcObject.getAudioTracks().forEach(trk=>{
media.streams[e.data.streamID].srcObject.removeTrack(trk);
});
}
media.tracks[e.data.trackID].stream.getTracks().forEach(trk=>{
media.streams[e.data.streamID].srcObject.addTrack(trk);
});
}
} else {
media.tracks[e.data.trackID].frameWriter.write(e.data.frame);
}
return;
} // end of video/audio capture
var consolelog = true;
if (e.data.stats){
console.log(e.data.stats);
var out = "<br />total_inbound_connections:"+e.data.stats.total_inbound_connections;
out += "<br />total_outbound_connections:"+e.data.stats.total_outbound_connections;
for (var streamID in e.data.stats.inbound){
out += "<br /><br /><b>streamID:</b> "+streamID+"<br />";
out += printValues(e.data.stats.inbound[streamID]);
}
logOutput(out)
consolelog = false;
}
if (e.data.gotChat){
logOutput(e.data.gotChat)
}
if ("action" in e.data && e.data.action !== "loudness") {
logOutput("child-page-action: "+e.data.action+"<br />")
console.log(e.data);
}
if (e.data.action && (e.data.action == "image-frame-capture")){
var imageElement = document.createElement("img");
var imageUrl = URL.createObjectURL(e.data.value.imageData);
imageElement.src = imageUrl;
imageElement.style.maxWidth='260px'
mainLog.appendChild(imageElement);
}
if ("streamIDs" in e.data){
var out = "child-page-action: streamIDs<br />"
for (var key in e.data.streamIDs) {
out += "streamID: " + key + ", label:"+e.data.streamIDs[key] + "\n";
}
logOutput(out)
}
if ("deviceList" in e.data){
var out = "child-page-action: deviceList<br />";
for (var i = 0;i<e.data.deviceList.length;i++){
out += e.data.deviceList[i].label + "<br />";
}
logOutput(out);
}
if ("loudness" in e.data) {
var loudnessOutput;
var id = exampleId + "-loudness";
var out = "child-page-action: loudness<br />";
if (document.getElementById(id)){
loudnessOutput = document.getElementById(id);
} else {
loudnessOutput = newElement("div", { id, classList: "sensors-log" });
streamDataLogs.prepend(loudnessOutput);
}
for (var key in e.data.loudness) {
out += key + " Loudness: " + e.data.loudness[key] + "\n";
}
logOutput(out, { window: loudnessOutput, replace: true, style: { paddingBottom: '20px', borderBottom: 'dotted 1px #4d66a8' } });
consolelog = false;
}
if ("detailedState" in e.data){
logOutput("child-page-action: detailedState<br />"+JSON.stringify(e.data.detailedState)+"<br />")
}
if ("callback" in e.data) {
if (e.data.callback.action === 'getDetails') {
logOutput("child-page-action: getDetails<br />"+JSON.stringify(e.data.callback.result, null, 2))
}
}
if ("sensors" in e.data){
var sensorsOutput;
var id = exampleId + "-sensors";
var out = "child-page-action: sensors<br /><br />";
if (document.getElementById(id)){
sensorsOutput = document.getElementById(id);
} else {
sensorsOutput = newElement("div", { id, classList: "sensors-log" });
streamDataLogs.appendChild(sensorsOutput);
}
for (var key in e.data.sensors.lin) {
out += key + " linear: " + roundSensorData(e.data.sensors.lin[key]) + "<br />";
}
for (var key in e.data.sensors.acc) {
out += key + " acceleration: " + roundSensorData(e.data.sensors.acc[key]) + "<br />";
}
for (var key in e.data.sensors.gyro) {
out += key + " gyro: " + roundSensorData(e.data.sensors.gyro[key]) + "<br />";
}
for (var key in e.data.sensors.mag) {
out += key + " magnet: " + roundSensorData(e.data.sensors.mag[key]) + "<br />";
}
logOutput(out, { window: sensorsOutput, replace: true })
function roundSensorData(data) {
return Math.round(data * 100000) / 100000
}
consolelog = false;
}
if (("action" in e.data) && (e.data.action === "view-stats-updated")){
consolelog = false;
}
if (consolelog){
console.log(e.data);
}
});
function getExampleControls() {
var controlsContainer = newElement("div", { classList: "controls" });
var iframeExamples = getExamplesSection(
IFRAME_API,
{
guestId: 'iframe',
headers: '<h3>IFRAME</h3><p><em>These commands are exclusive to the IFRAME API.</em></p>',
}
);
var companionExamples = getExamplesSection(
COMPANION_API,
{
guestId: 'companion',
headers: '<h3>HTTP/WSS</h3><p><em>These commands re-use the Companion.Ninja HTTP/WSS API, except you can send them via this Iframe interface.</em></p>',
info: '\
<p><a target="_blank" style="word-break: break-word" href="https://github.com/steveseguin/Companion-Ninja#api-commands">\
More details of the below IFRAME API details are here: https://github.com/steveseguin/Companion-Ninja#api-commands\
</a></p>'
}
)
var removeIframeButton = document.createElement("button");
removeIframeButton.innerHTML = "REMOVE IFRAME";
removeIframeButton.onclick = function(){iframeExample.parentNode.removeChild(iframeExample);};
exampleHeader.appendChild(removeIframeButton);
controlsContainer.append(
iframeExamples.header,
iframeExamples.examples,
companionExamples.header,
companionExamples.examples
);
return controlsContainer
}
function getGuestAPIGenerator() {
var targetGuest = newElement('div', {
classList: 'target-guest',
innerHTML: '<h3>HTTP/WSS Director</h3><p><em>Directors can target commands to individual guests</em></p><h4>Target guest by: </h4>'
});
var targetGuestBySlot = newElement("input", {
type: "radio",
checked: true,
id: exampleId+"-guest-slot-radio",
value: "slot",
name: exampleId+"-guest-target",
onclick: function() {
document.getElementById(exampleId+"-guest-slot").classList.remove("hidden");
document.getElementById(exampleId+"-guest-id").classList="hidden";
}
});
var targetGuestBySlotLabel = newElement("label", { for: exampleId+"-guest-slot-radio", innerText: "Slot (number)" })
var targetGuestById = newElement("input", {
type: "radio",
id: exampleId+"-guest-id-radio",
value: "id",
min: 0,
name: exampleId+"-guest-target",
onclick: function() {
document.getElementById(exampleId+"-guest-slot").classList="hidden";
document.getElementById(exampleId+"-guest-id").classList.remove("hidden")
}
});
var targetGuestByIdLabel = newElement("label", { for: exampleId+"-guest-id-radio", innerText: "streamID (string)" })
var targetGuestInputs = newElement("div", { classList: "target-guest-inputs"});
var guestIdInput = newElement("input", { id: exampleId+"-guest-id", type: "text", placeholder: "Guest ID", value: "abc123", classList: "hidden" });
var guestSlotInput = newElement("input", { value: 1, id: exampleId+"-guest-slot", type: "number", placeholder: "Guest Slot" });
var generateGuestAPI = newElement("button", {
innerText: "Generate commands",
onclick: function() {
var targetType = (guestSlotInput.classList.value === "hidden") ? 'id' : 'slot';
var value = (targetType === 'id') ? guestIdInput.value : guestSlotInput.value;
var guestId = 'guest' + value;
var headers = '<h4>Target GUEST ' + value + '</h4><p><em>These commands target a guest';
headers += (targetType === 'id') ? ' with id ' : ' in slot ';
headers += value + '</em></p>'
if (!document.getElementById(exampleId + '-' + guestId)) {
var guestTargetedExamples = getExamplesSection(
guestTargetedAPI(value),
{ guestId: 'guest' + value, headers },
)
controlsContainer.appendChild(guestTargetedExamples.header);
controlsContainer.appendChild(guestTargetedExamples.examples);
}
}
})
targetGuestInputs.append(guestIdInput, guestSlotInput, generateGuestAPI);
targetGuest.append(targetGuestBySlot, targetGuestBySlotLabel, targetGuestById, targetGuestByIdLabel, targetGuestInputs);
return targetGuest;
}
function getExamplesSection(api, section) {
var sectionId = exampleId + "-" + section.guestId;
var header = document.createElement('div');
header.classList = "api-section-header";
var toggleBtn = document.createElement('button');
toggleBtn.innerText = "Show";
toggleBtn.onclick = function() {
ExpandableCards[exampleId][section.guestId] = !ExpandableCards[exampleId][section.guestId];
if (ExpandableCards[exampleId][section.guestId] === true) {
document.getElementById(sectionId).classList = "api-section";
toggleBtn.innerText = "Hide"
} else {
document.getElementById(sectionId).classList = "hidden";
toggleBtn.innerText = "Show"
}
};
var headerText = document.createElement('div');
headerText.innerHTML = section.headers;
header.append(headerText, toggleBtn);
var examples = document.createElement('div');
examples.classList = "hidden";
examples.id = sectionId;
if (section.info) {
var info = document.createElement("div");
info.innerHTML = section?.info;
examples.appendChild(info);
}
Object.keys(api).sort().forEach((param) => {
var header = document.createElement('h4');
header.innerHTML = param;
examples.appendChild(header);
addExamples(examples, param, api[param]);
})
return { header, examples }
}
function newElement(type, attributes) {
var el = document.createElement(type);
for (var attr in attributes) {
el[attr] = attributes[attr]
}
return el;
}
function addExamples(parentContainer, name, data) {
if (data.options) {
for (var i = 0; i < data.options.length; i++) {
var button = document.createElement("button");
button.innerHTML = (data.labels !== undefined)
? data.labels[i]
: JSON.stringify(data.options[i]);
const result = data.result(data.options[i]); // result needs to be a const, not a var
button.onclick = function() { postMessage(result)};
parentContainer.appendChild(button)
}
}
if (data.input) {
var inputWrapper = document.createElement("div");
var input = document.createElement("input");
for (var attr in data.input) {
input[attr] = data.input[attr];
}
if (input.type === 'range') {
input.onchange = function() { postMessage(data.result(this.value)) };
} else {
var button = newElement("button", { innerText: "Send" });
button.onclick = function() { postMessage(data.result(input.value)) };
inputWrapper.appendChild(button);
}
inputWrapper.prepend(input);
parentContainer.appendChild(inputWrapper);
}
}
function logOutput(output, config) {
var log = document.createElement("div");
var outputWindow = config?.window ?? mainLog;
log.innerHTML = output;
if (config?.classList) {
log.classList = config?.classList;
}
// Clears the log when a new entry comes in
if (config?.replace === true) {
outputWindow.innerHTML = ""
}
outputWindow.appendChild(log);
outputWindow.scrollTo(0, outputWindow.scrollHeight);
}
function postMessage(message) {
iframe.contentWindow.postMessage(message, '*');
var out = "Post: " + JSON.stringify(message);
logOutput(out, { classList: "post-log" });
}
}
function generateId() {
return Math.random().toString(36).replace(/[^a-z]+/g, '').substr(0, 10);
}
function printValues( obj) {
var out = "";
for (var key in obj) {
if (typeof obj[key] === "object") {
out +="<br />";
out += printValues(obj[key]);
} else {
out +="<b>"+key+"</b>: "+obj[key]+"<br />";
}
}
return out;
}
function addUrlParams(_url, paramCheckboxes) {
var url = _url !== "" ? _url : "./";
for(var i = 0; i < paramCheckboxes.length; i++) {
var param = paramCheckboxes[i];
if (document.getElementById(param).checked){
url += url.includes("?") ? '&' : '?';
url += param;
}
}
return url;
}
</script>
</head>
<body>
<input placeholder="Enter an VDO.Ninja View URL here" id="viewlink" />
<button onclick="loadIframe();">ADD</button>
<input type="checkbox" id="cleanoutput" >Clean Output
<input type="checkbox" id="transparent">Transparent
<input type="checkbox" id="hidemenu">Hide Menu
<div id="container"></div>
</body>
</html>