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overhaul & improve Linux screenshare (#489)
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Fixes fps/resolution not properly being applied
Enables hardware encoding via vaapi
Redesigns stream picker modal 

Co-authored-by: kaitlynkittyy <kaitlynyaadev@kaitlynyaa.dev>
Co-authored-by: Oleh Polisan <polisanoleg@gmail.com>
Co-authored-by: Vendicated <vendicated@riseup.net>
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@catgirlcataclysm @PolisanTheEasyNick @Vendicated
4 people authored Apr 17, 2024
1 parent df05d12 commit 8eaa520
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Showing 5 changed files with 166 additions and 26 deletions.
8 changes: 6 additions & 2 deletions src/main/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -27,14 +27,18 @@ process.env.VENCORD_USER_DATA_DIR = DATA_DIR;
function init() {
const { disableSmoothScroll, hardwareAcceleration } = Settings.store;

if (hardwareAcceleration === false) app.disableHardwareAcceleration();
if (hardwareAcceleration === false) {
app.disableHardwareAcceleration();
} else {
app.commandLine.appendSwitch("enable-features", "VaapiVideoDecodeLinuxGL,VaapiVideoEncoder,VaapiVideoDecoder");
}

if (disableSmoothScroll) {
app.commandLine.appendSwitch("disable-smooth-scrolling");
}

// work around chrome 66 disabling autoplay by default
app.commandLine.appendSwitch("autoplay-policy", "no-user-gesture-required");

// WinRetrieveSuggestionsOnlyOnDemand: Work around electron 13 bug w/ async spellchecking on Windows.
// HardwareMediaKeyHandling,MediaSessionService: Prevent Discord from registering as a media service.
//
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139 changes: 116 additions & 23 deletions src/renderer/components/ScreenSharePicker.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@

import "./screenSharePicker.css";

import { closeModal, Margins, Modals, ModalSize, openModal, useAwaiter } from "@vencord/types/utils";
import { closeModal, Logger, Margins, Modals, ModalSize, openModal, useAwaiter } from "@vencord/types/utils";
import { findStoreLazy, onceReady } from "@vencord/types/webpack";
import {
Button,
Expand Down Expand Up @@ -36,6 +36,7 @@ interface StreamSettings {
fps: StreamFps;
audio: boolean;
audioSource?: string;
contentHint?: string;
workaround?: boolean;
onlyDefaultSpeakers?: boolean;
}
Expand All @@ -50,7 +51,9 @@ interface Source {
url: string;
}

let currentSettings: StreamSettings | null = null;
export let currentSettings: StreamSettings | null = null;

const logger = new Logger("VesktopScreenShare");

addPatch({
patches: [
Expand All @@ -60,6 +63,20 @@ addPatch({
match: /this.localWant=/,
replace: "$self.patchStreamQuality(this);$&"
}
},
{
find: "x-google-max-bitrate",
replacement: [
{
// eslint-disable-next-line no-useless-escape
match: /"x-google-max-bitrate=".concat\(\i\)/,
replace: '"x-google-max-bitrate=".concat("80_000")'
},
{
match: /;level-asymmetry-allowed=1/,
replace: ";b=AS:800000;level-asymmetry-allowed=1"
}
]
}
],
patchStreamQuality(opts: any) {
Expand All @@ -74,6 +91,14 @@ addPatch({
bitrateMax: 8000000,
bitrateTarget: 600000
});
if (opts?.encode) {
Object.assign(opts.encode, {
framerate,
width,
height,
pixelCount: height * width
});
}
Object.assign(opts.capture, {
framerate,
width,
Expand Down Expand Up @@ -219,6 +244,47 @@ function StreamSettings({
</div>
</section>
</div>
<div className="vcd-screen-picker-quality">
<section>
<Forms.FormTitle>Content Type</Forms.FormTitle>
<div>
<div className="vcd-screen-picker-radios">
<label
className="vcd-screen-picker-radio"
data-checked={settings.contentHint === "motion"}
>
<Text variant="text-sm/bold">Prefer Smoothness</Text>
<input
type="radio"
name="contenthint"
value="motion"
checked={settings.contentHint === "motion"}
onChange={() => setSettings(s => ({ ...s, contentHint: "motion" }))}
/>
</label>
<label
className="vcd-screen-picker-radio"
data-checked={settings.contentHint === "detail"}
>
<Text variant="text-sm/bold">Prefer Clarity</Text>
<input
type="radio"
name="contenthint"
value="detail"
checked={settings.contentHint === "detail"}
onChange={() => setSettings(s => ({ ...s, contentHint: "detail" }))}
/>
</label>
</div>
<div className="vcd-screen-picker-hint-description">
<p>
Choosing "Prefer Clarity" will result in a significantly lower framerate in
exchange for a much sharper and clearer image.
</p>
</div>
</div>
</section>
</div>
</Card>
</div>

Expand Down Expand Up @@ -358,6 +424,7 @@ function ModalComponent({
const [settings, setSettings] = useState<StreamSettings>({
resolution: "1080",
fps: "60",
contentHint: "motion",
audio: true
});

Expand All @@ -367,7 +434,6 @@ function ModalComponent({
<Forms.FormTitle tag="h2">ScreenShare</Forms.FormTitle>
<Modals.ModalCloseButton onClick={close} />
</Modals.ModalHeader>

<Modals.ModalContent className="vcd-screen-picker-modal">
{!selected ? (
<ScreenPicker screens={screens} chooseScreen={setSelected} />
Expand All @@ -380,35 +446,62 @@ function ModalComponent({
/>
)}
</Modals.ModalContent>

<Modals.ModalFooter className="vcd-screen-picker-footer">
<Button
disabled={!selected}
onClick={() => {
currentSettings = settings;

// If there are 2 connections, the second one is the existing stream.
// In that case, we patch its quality
const conn = [...MediaEngineStore.getMediaEngine().connections][1];
if (conn && conn.videoStreamParameters.length > 0) {
try {
const frameRate = Number(settings.fps);
const height = Number(settings.resolution);
const width = Math.round(height * (16 / 9));
Object.assign(conn.videoStreamParameters[0], {
maxFrameRate: Number(settings.fps),
maxPixelCount: width * height,
maxBitrate: 8000000,
maxResolution: {
type: "fixed",
width,
height
}

const conn = [...MediaEngineStore.getMediaEngine().connections].find(
connection => connection.streamUserId === UserStore.getCurrentUser().id
);

if (conn) {
conn.videoStreamParameters[0].maxFrameRate = frameRate;
conn.videoStreamParameters[0].maxResolution.height = height;
conn.videoStreamParameters[0].maxResolution.width = width;
}

submit({
id: selected!,
...settings
});
}

submit({
id: selected!,
...settings
});
setTimeout(async () => {
const conn = [...MediaEngineStore.getMediaEngine().connections].find(
connection => connection.streamUserId === UserStore.getCurrentUser().id
);
if (!conn) return;

const track = conn.input.stream.getVideoTracks()[0];

const constraints = {
...track.getConstraints(),
frameRate,
width: { min: 640, ideal: width, max: width },
height: { min: 480, ideal: height, max: height },
advanced: [{ width: width, height: height }],
resizeMode: "none"
};

try {
await track.applyConstraints(constraints);

logger.info(
"Applied constraints successfully. New constraints:",
track.getConstraints()
);
} catch (e) {
logger.error("Failed to apply constraints.", e);
}
}, 100);
} catch (error) {
logger.error("Error while submitting stream.", error);
}

close();
}}
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16 changes: 16 additions & 0 deletions src/renderer/components/screenSharePicker.css
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,15 @@
grid-template-columns: 1fr 1fr;
}

.vcd-screen-picker-settings-grid > div {
display: flex;
flex-direction: column;
}

.vcd-screen-picker-card {
flex-grow: 1;
}

.vcd-screen-picker-grid {
display: grid;
grid-template-columns: 1fr 1fr;
Expand Down Expand Up @@ -128,3 +137,10 @@
.vcd-screen-picker-audio {
margin-bottom: 0;
}

.vcd-screen-picker-hint-description {
color: var(--header-secondary);
font-size: 14px;
line-height: 20px;
font-weight: 400;
}
2 changes: 1 addition & 1 deletion src/renderer/patches/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,6 @@
// TODO: Possibly auto generate glob if we have more patches in the future
import "./enableNotificationsByDefault";
import "./platformClass";
import "./screenShareAudio";
import "./screenShareFixes";
import "./spellCheck";
import "./windowsTitleBar";
27 changes: 27 additions & 0 deletions src/renderer/patches/screenShareAudio.ts → src/renderer/patches/screenShareFixes.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -4,8 +4,12 @@
* Copyright (c) 2023 Vendicated and Vencord contributors
*/

import { Logger } from "@vencord/types/utils";
import { currentSettings } from "renderer/components/ScreenSharePicker";
import { isLinux } from "renderer/utils";

const logger = new Logger("VesktopStreamFixes");

if (isLinux) {
const original = navigator.mediaDevices.getDisplayMedia;

Expand All @@ -23,6 +27,29 @@ if (isLinux) {
const stream = await original.call(this, opts);
const id = await getVirtmic();

const frameRate = Number(currentSettings?.fps);
const height = Number(currentSettings?.resolution);
const width = Math.round(height * (16 / 9));
const track = stream.getVideoTracks()[0];

track.contentHint = String(currentSettings?.contentHint);

const constraints = {
...track.getConstraints(),
frameRate,
width: { min: 640, ideal: width, max: width },
height: { min: 480, ideal: height, max: height },
advanced: [{ width: width, height: height }],
resizeMode: "none"
};

track
.applyConstraints(constraints)
.then(() => {
logger.info("Applied constraints successfully. New constraints: ", track.getConstraints());
})
.catch(e => logger.error("Failed to apply constraints.", e));

if (id) {
const audio = await navigator.mediaDevices.getUserMedia({
audio: {
Expand Down

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