discord-screenaudio/assets/userscript.js

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// From v0.4
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navigator.mediaDevices.chromiumGetDisplayMedia =
navigator.mediaDevices.getDisplayMedia;
const getAudioDevice = async (nameOfAudioDevice) => {
await navigator.mediaDevices.getUserMedia({
audio: true,
});
let devices = await navigator.mediaDevices.enumerateDevices();
let audioDevice = devices.find(({ label }) => label === nameOfAudioDevice);
return audioDevice;
};
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function setGetDisplayMedia(overrideArgs = undefined) {
const getDisplayMedia = async (...args) => {
var id;
try {
let myDiscordAudioSink = await getAudioDevice(
"discord-screenaudio-virtmic"
);
id = myDiscordAudioSink.deviceId;
} catch (error) {
id = "default";
}
let captureSystemAudioStream = await navigator.mediaDevices.getUserMedia({
audio: {
// We add our audio constraints here, to get a list of supported constraints use navigator.mediaDevices.getSupportedConstraints();
// We must capture a microphone, we use default since its the only deviceId that is the same for every Chromium user
deviceId: {
exact: id,
},
// We want auto gain control, noise cancellation and noise suppression disabled so that our stream won't sound bad
autoGainControl: false,
echoCancellation: false,
noiseSuppression: false,
// By default Chromium sets channel count for audio devices to 1, we want it to be stereo in case we find a way for Discord to accept stereo screenshare too
channelCount: 2,
// You can set more audio constraints here, bellow are some examples
//latency: 0,
//sampleRate: 48000,
//sampleSize: 16,
//volume: 1.0
},
});
let [track] = captureSystemAudioStream.getAudioTracks();
const gdm = await navigator.mediaDevices.chromiumGetDisplayMedia(
...(overrideArgs
? [overrideArgs]
: args || [{ video: true, audio: true }])
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);
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gdm.addTrack(track);
return gdm;
};
navigator.mediaDevices.getDisplayMedia = getDisplayMedia;
}
setGetDisplayMedia();
const clonedElements = [];
const hiddenElements = [];
let wasStreamActive = false;
setInterval(() => {
const streamActive =
document.getElementsByClassName("panel-2ZFCRb activityPanel-9icbyU")
.length > 0;
if (!streamActive && wasStreamActive)
console.log("!discord-screenaudio-stream-stopped");
wasStreamActive = streamActive;
if (streamActive) {
clonedElements.forEach((el) => {
el.remove();
});
clonedElements.length = 0;
hiddenElements.forEach((el) => {
el.style.display = "block";
});
hiddenElements.length = 0;
} else {
for (const el of document.querySelectorAll(
'[aria-label="Share Your Screen"]'
)) {
elClone = el.cloneNode(true);
elClone.ariaLabel = "Share Your Screen with Audio";
elClone.title = "Share Your Screen with Audio";
elClone.addEventListener("click", () => {
console.log("!discord-screenaudio-start-stream");
});
const initialDisplay = el.style.display;
window.discordScreenaudioStartStream = (width, height, frameRate) => {
setGetDisplayMedia({
audio: true,
video: { width, height, frameRate },
});
el.click();
el.style.display = initialDisplay;
elClone.remove();
};
el.style.display = "none";
el.parentNode.insertBefore(elClone, el);
clonedElements.push(elClone);
hiddenElements.push(el);
}
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}
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// Add about text in settings
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if (
document.getElementsByClassName("dirscordScreenaudioAboutText").length == 0
) {
for (const el of document.getElementsByClassName("info-3pQQBb")) {
const aboutEl = document.createElement("div");
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aboutEl.innerText = "discord-screenaudio v1.0.0-rc.6";
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aboutEl.style.fontSize = "12px";
aboutEl.style.color = "var(--text-muted)";
aboutEl.classList.add("dirscordScreenaudioAboutText");
el.appendChild(aboutEl);
}
}
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// Remove stream settings if stream is active
document.getElementById("manage-streams-change-windows")?.remove();
document.querySelector(`[aria-label="Stream Settings"]`)?.remove();
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}, 500);