fix(HLS): Fix accessibilityPurpose detection (#5840)

Closes #5810
shaka-project · Oct 31, 2023 · ceaa9fa · ceaa9fa
1 parent 2e77668
commit ceaa9fa
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/lib/hls/hls_parser.js b/lib/hls/hls_parser.js
@@ -2361,13 +2361,19 @@ shaka.hls.HlsParser = class {
     }
 
     let kind = undefined;
+    let accessibilityPurpose = null;
     if (type == shaka.util.ManifestParserUtils.ContentType.TEXT) {
       if (roles.includes('public.accessibility.transcribes-spoken-dialog') &&
           roles.includes('public.accessibility.describes-music-and-sound')) {
         kind = shaka.util.ManifestParserUtils.TextStreamKind.CLOSED_CAPTION;
       } else {
         kind = shaka.util.ManifestParserUtils.TextStreamKind.SUBTITLE;
       }
+    } else {
+      if (roles.includes('public.accessibility.describes-video')) {
+        accessibilityPurpose =
+              shaka.media.ManifestParser.AccessibilityPurpose.VISUALLY_IMPAIRED;
+      }
     }
 
     // If there are no roles, and we have defaulted to the subtitle "kind" for
@@ -2412,7 +2418,7 @@ shaka.hls.HlsParser = class {
       hdr: undefined,
       videoLayout: undefined,
       tilesLayout: undefined,
-      accessibilityPurpose: null,
+      accessibilityPurpose: accessibilityPurpose,
       external: false,
     };
   }