feat: add support for #EXT-X-PART-INF

https://developer.apple.com/documentation/http_live_streaming/enabling_low-latency_hls#3282434 https://tools.ietf.org/html/draft-pantos-hls-rfc8216bis-08#section-4.4.3.7
videojs · Jan 20, 2021 · 437f78f · 437f78f
1 parent 7f82f53
commit 437f78f
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Showing 4 changed files with 25 additions and 0 deletions.
diff --git a/src/parse-stream.js b/src/parse-stream.js
@@ -520,6 +520,22 @@ export default class ParseStream extends Stream {
         this.trigger('data', event);
         return;
       }
+      match = (/^#EXT-X-PART-INF:(.*)$/).exec(newLine);
+      if (match && match[1]) {
+        event = {
+          type: 'tag',
+          tagType: 'part-inf'
+        };
+        event.attributes = parseAttributes(match[1]);
+        ['PART-TARGET'].forEach(function(key) {
+          if (event.attributes.hasOwnProperty(key)) {
+            event.attributes[key] = parseFloat(event.attributes[key]);
+          }
+        });
+
+        this.trigger('data', event);
+        return;
+      }
 
       match = (/^#EXT-X-PRELOAD-HINT:(.*)$/).exec(newLine);
       if (match && match[1]) {

diff --git a/src/parser.js b/src/parser.js
@@ -397,6 +397,9 @@ export default class Parser extends Stream {
             'preload-hint'() {
               this.manifest.preloadHints = this.manifest.preloadHints || [];
               this.manifest.preloadHints.push(entry.attributes);
+            },
+            'part-inf'() {
+              this.manifest.partInf = entry.attributes;
             }
           })[entry.tagType] || noop).call(self);
         },

diff --git a/test/fixtures/m3u8/llhls.json b/test/fixtures/m3u8/llhls.json
@@ -9,6 +9,9 @@
     {"TYPE": "PART", "URI": "filePart273.3.mp4"},
     {"TYPE": "PART", "URI": "filePart273.4.mp4"}
   ],
+  "partInf": {
+    "PART-TARGET": 0.33334
+  },
   "parts": [
     {
       "DURATION": 0.33334,

diff --git a/test/fixtures/m3u8/llhlsDelta.json b/test/fixtures/m3u8/llhlsDelta.json
@@ -9,6 +9,9 @@
     {"TYPE": "PART", "URI": "filePart273.4.mp4"},
     {"TYPE": "PART", "URI": "filePart273.5.mp4"}
   ],
+  "partInf": {
+    "PART-TARGET": 0.33334
+  },
   "parts": [
     {
       "DURATION": 0.33334,