fix(WASM parser): parse correctly <Label> to a tag and not an attribute

src/parsers/manifest/dash/wasm-parser/rs/events.rs

@@ -86,6 +86,9 @@ pub enum TagName {
     // -- Inside a <SegmentList> --
     /// Indicate a <SegmentURL> node
     SegmentUrl = 20,
+
+    /// Indicate a <Label> node
+    Label = 21,
 }
 
 #[derive(PartialEq, Clone, Copy)]
@@ -276,8 +279,6 @@ pub enum AttributeName {
     /// namespaces that will appear in it.
     Namespace = 70,
 
-    Label = 71, // String
-
     ServiceLocation = 72, // String
 
     // SegmentTemplate

src/parsers/manifest/dash/wasm-parser/rs/processor/mod.rs

@@ -114,7 +114,10 @@ impl MPDProcessor {
                     }
                     b"cenc:pssh" => self.process_cenc_element(),
                     b"Location" => self.process_location_element(),
-                    b"Label" => self.process_label_element(),
+                    b"Label" => {
+                        TagName::Label.report_tag_open();
+                        self.process_label_element();
+                    }
                     b"SegmentTimeline" => self.process_segment_timeline_element(),
 
                     b"EventStream" => {
@@ -274,7 +277,7 @@ impl MPDProcessor {
                 Ok(Event::Text(t)) => {
                     if t.len() > 0 {
                         match t.unescape() {
-                            Ok(unescaped) => AttributeName::Label.report(unescaped),
+                            Ok(unescaped) => AttributeName::Text.report(unescaped),
                             Err(err) => ParsingError::from(err).report_err(),
                         }
                     }
@@ -284,6 +287,7 @@ impl MPDProcessor {
                     if inner_tag > 0 {
                         inner_tag -= 1;
                     } else {
+                        TagName::Label.report_tag_close();
                         break;
                     }
                 }

src/parsers/manifest/dash/wasm-parser/ts/generators/AdaptationSet.ts

@@ -27,6 +27,7 @@ import { parseFloatOrBool, parseString } from "../utils";
 import { generateBaseUrlAttrParser } from "./BaseURL";
 import { generateContentComponentAttrParser } from "./ContentComponent";
 import { generateContentProtectionAttrParser } from "./ContentProtection";
+import { generateLabelElementParser } from "./Label";
 import {
   generateRepresentationAttrParser,
   generateRepresentationChildrenParser,
@@ -209,6 +210,15 @@ export function generateAdaptationSetChildrenParser(
         break;
       }
 
+      case TagName.Label: {
+        parsersStack.pushParsers(
+          nodeId,
+          noop, // Label as treated like an attribute
+          generateLabelElementParser(adaptationSetChildren, linearMemory),
+        );
+        break;
+      }
+
       default:
         // Allows to make sure we're not mistakenly closing a re-opened
         // tag.
@@ -363,11 +373,6 @@ export function generateAdaptationSetAttrParser(
       case AttributeName.AvailabilityTimeComplete:
         adaptationAttrs.availabilityTimeComplete = dataView.getUint8(0) === 0;
         break;
-      case AttributeName.Label: {
-        const label = parseString(textDecoder, linearMemory.buffer, ptr, len);
-        adaptationAttrs.label = label;
-        break;
-      }
 
       // TODO
       // case AttributeName.StartsWithSap:

src/parsers/manifest/dash/wasm-parser/ts/generators/Label.ts

@@ -0,0 +1,16 @@
+import type { IAdaptationSetChildren } from "../../../node_parser_types";
+import type { IAttributeParser } from "../parsers_stack";
+import { AttributeName } from "../types";
+import { parseString } from "../utils";
+
+export function generateLabelElementParser(
+  adaptationSet: IAdaptationSetChildren,
+  linearMemory: WebAssembly.Memory,
+): IAttributeParser {
+  const textDecoder = new TextDecoder();
+  return function onMPDAttribute(attr: AttributeName, ptr: number, len: number) {
+    if (attr === AttributeName.Text) {
+      adaptationSet.label = parseString(textDecoder, linearMemory.buffer, ptr, len);
+    }
+  };
+}

src/parsers/manifest/dash/wasm-parser/ts/types.ts

@@ -108,6 +108,9 @@ export const enum TagName {
 
   /// Indicate a <SegmentURL> node
   SegmentUrl = 20,
+
+  /// Indicate a <Label> node
+  Label = 21,
 }
 
 /**