From d319718eded6e36f4fc705588de84a301a428d49 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Velad=20Galv=C3=A1n?= <ladvan91@hotmail.com>
Date: Tue, 18 Oct 2022 07:31:30 +0200
Subject: [PATCH] fix(hls): Fix raw format detection when the main playlist
 hasn't type (#4583)

---
 lib/hls/hls_parser.js | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/lib/hls/hls_parser.js b/lib/hls/hls_parser.js
index 68581b0a4e..5524369fe6 100644
--- a/lib/hls/hls_parser.js
+++ b/lib/hls/hls_parser.js
@@ -2714,6 +2714,11 @@ shaka.hls.HlsParser = class {
       return mimeType;
     }
 
+    mimeType = HlsParser.RAW_FORMATS_TO_MIME_TYPES_[extension];
+    if (mimeType) {
+      return mimeType;
+    }
+
     // The extension map didn't work, so guess based on codecs.
     mimeType = this.guessMimeTypeBeforeLoading_(contentType, codecs);
     if (mimeType) {
@@ -3091,6 +3096,18 @@ shaka.hls.HlsParser.StreamInfo;
 shaka.hls.HlsParser.StreamInfos;
 
 
+/**
+ * @const {!Object.<string, string>}
+ * @private
+ */
+shaka.hls.HlsParser.RAW_FORMATS_TO_MIME_TYPES_ = {
+  'aac': 'audio/aac',
+  'ac3': 'audio/ac3',
+  'ec3': 'audio/ec3',
+  'mp3': 'audio/mpeg',
+};
+
+
 /**
  * @const {!Object.<string, string>}
  * @private
@@ -3105,12 +3122,6 @@ shaka.hls.HlsParser.AUDIO_EXTENSIONS_TO_MIME_TYPES_ = {
   'cmfa': 'audio/mp4',
   // MPEG2-TS also uses video/ for audio: https://bit.ly/TsMse
   'ts': 'video/mp2t',
-
-  // Raw formats:
-  'aac': 'audio/aac',
-  'ac3': 'audio/ac3',
-  'ec3': 'audio/ec3',
-  'mp3': 'audio/mpeg',
 };