auto select subtitle

src/backend/helpers/captions.ts

@@ -4,6 +4,10 @@ import DOMPurify from "dompurify";
 import { parse, detect, list } from "subsrt-ts";
 import { ContentCaption } from "subsrt-ts/dist/types/handler";
 
+export const customCaption = "external-custom";
+export function makeCaptionId(caption: MWCaption, isLinked: boolean): string {
+  return isLinked ? `linked-${caption.langIso}` : `external-${caption.langIso}`;
+}
 export const subtitleTypeList = list().map((type) => `.${type}`);
 export const sanitize = DOMPurify.sanitize;
 export async function getCaptionUrl(caption: MWCaption): Promise<string> {

src/video/components/controllers/SourceController.tsx

@@ -1,4 +1,11 @@
-import { MWStreamQuality, MWStreamType } from "@/backend/helpers/streams";
+import { getCaptionUrl, makeCaptionId } from "@/backend/helpers/captions";
+import {
+  MWCaption,
+  MWStreamQuality,
+  MWStreamType,
+} from "@/backend/helpers/streams";
+import { captionLanguages } from "@/setup/iso6391";
+import { useSettings } from "@/state/settings";
 import { useInitialized } from "@/video/components/hooks/useInitialized";
 import { useVideoPlayerDescriptor } from "@/video/state/hooks";
 import { useControls } from "@/video/state/logic/controls";
@@ -10,6 +17,19 @@ interface SourceControllerProps {
   quality: MWStreamQuality;
   providerId?: string;
   embedId?: string;
+  captions: MWCaption[];
+}
+async function tryFetch(captions: MWCaption[]) {
+  for (let i = 0; i < captions.length; i += 1) {
+    const caption = captions[i];
+    try {
+      const blobUrl = await getCaptionUrl(caption);
+      return { caption, blobUrl };
+    } catch (error) {
+      continue;
+    }
+  }
+  return null;
 }
 
 export function SourceController(props: SourceControllerProps) {
@@ -17,13 +37,35 @@ export function SourceController(props: SourceControllerProps) {
   const controls = useControls(descriptor);
   const { initialized } = useInitialized(descriptor);
   const didInitialize = useRef<boolean>(false);
-
+  const { captionSettings } = useSettings();
   useEffect(() => {
     if (didInitialize.current) return;
     if (!initialized) return;
     controls.setSource(props);
+    // get preferred language
+    const preferredLanguage = captionLanguages.find(
+      (v) => v.id === captionSettings.language
+    );
+    if (!preferredLanguage) return;
+    const captions = props.captions.filter(
+      (v) =>
+        // langIso may contain the English name or the native name of the language
+        v.langIso.indexOf(preferredLanguage.englishName) !== -1 ||
+        v.langIso.indexOf(preferredLanguage.nativeName) !== -1
+    );
+    if (!captions) return;
+    // caption url can return a response other than 200
+    // that's why we fetch until we get a 200 response
+    tryFetch(captions).then((response) => {
+      // none of them were successful
+      if (!response) return;
+      // set the preferred language
+      const id = makeCaptionId(response.caption, true);
+      controls.setCaption(id, response.blobUrl);
+    });
+
     didInitialize.current = true;
-  }, [props, controls, initialized]);
+  }, [props, controls, initialized, captionSettings.language]);
 
   return null;
 }

src/video/components/popouts/CaptionSelectionPopout.tsx

@@ -1,5 +1,7 @@
 import {
+  customCaption,
   getCaptionUrl,
+  makeCaptionId,
   parseSubtitles,
   subtitleTypeList,
 } from "@/backend/helpers/captions";
@@ -17,11 +19,6 @@ import { useMemo, useRef } from "react";
 import { useTranslation } from "react-i18next";
 import { PopoutListEntry, PopoutSection } from "./PopoutUtils";
 
-const customCaption = "external-custom";
-function makeCaptionId(caption: MWCaption, isLinked: boolean): string {
-  return isLinked ? `linked-${caption.langIso}` : `external-${caption.langIso}`;
-}
-
 export function CaptionSelectionPopout(props: {
   router: ReturnType<typeof useFloatingRouter>;
   prefix: string;

src/video/components/popouts/CaptionSettingsPopout.tsx

@@ -106,14 +106,7 @@ export function CaptionSettingsPopout(props: {
             captionSettings.style.backgroundColor.substring(7, 9),
             16
           )}
-          onChange={(e) =>
+          onChange={(e) => setCaptionBackgroundColor(e.target.valueAsNumber)}
-            setCaptionBackgroundColor(
-              `${captionSettings.style.backgroundColor.substring(
-                0,
-                7
-              )}${e.target.valueAsNumber.toString(16)}`
-            )
-          }
         />
         <div className="flex flex-row justify-between">
           <label className="font-bold" htmlFor="color">

src/views/developer/VideoTesterView.tsx

@@ -66,6 +66,7 @@ export default function VideoTesterView() {
             source={video.streamUrl}
             type={videoType}
             quality={MWStreamQuality.QUNKNOWN}
+            captions={[]}
           />
         </VideoPlayer>
       </div>

src/views/media/MediaView.tsx

@@ -148,6 +148,7 @@ export function MediaViewPlayer(props: MediaViewPlayerProps) {
           quality={props.stream.quality}
           embedId={props.stream.embedId}
           providerId={props.stream.providerId}
+          captions={props.stream.captions}
         />
         <ProgressListenerController
           startAt={firstStartTime.current}