From d48bf9f1c49fbcc82a955c48cf49fb8673ad7859 Mon Sep 17 00:00:00 2001
From: Ashley Manners <ashley.manners@xperi.com>
Date: Wed, 22 Mar 2023 17:48:35 +0000
Subject: [PATCH] fix(HLS): Adding support for DTS Express in HLS fMP4 (#5112)

---
 AUTHORS                           | 1 +
 CONTRIBUTORS                      | 1 +
 lib/media/media_source_engine.js  | 3 +++
 lib/util/manifest_parser_utils.js | 3 +--
 4 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/AUTHORS b/AUTHORS
index 38e4de2561..882b236e0f 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -97,3 +97,4 @@ Blue Billywig <*@bluebillywig.com>
 João Nabais <jlnabais@gmail.com>
 Koen Romers <koenromers@gmail.com>
 Zhenghang Chen <czhtju@gmail.com>
+Xperi <*@xperi.com>
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 9bccbbb364..2e42b38a4d 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -137,3 +137,4 @@ Janroel Koppen <j.koppen@bluebillywig.com>
 João Nabais <jlnabais@gmail.com>
 Koen Romers <koenromers@gmail.com>
 Zhenghang Chen <czhtju@gmail.com>
+Ashley Manners <ashley.manners@xperi.com>
diff --git a/lib/media/media_source_engine.js b/lib/media/media_source_engine.js
index c6e3a8c41e..6cfe31b035 100644
--- a/lib/media/media_source_engine.js
+++ b/lib/media/media_source_engine.js
@@ -209,6 +209,9 @@ shaka.media.MediaSourceEngine = class {
       'audio/mp4; codecs="ec-3"',
       'audio/mp4; codecs="opus"',
       'audio/mp4; codecs="flac"',
+      'audio/mp4; codecs="dtsc"', // DTS Digital Surround
+      'audio/mp4; codecs="dtse"', // DTS Express
+      'audio/mp4; codecs="dtsx"', // DTS:X
       // WebM types
       'video/webm; codecs="vp8"',
       'video/webm; codecs="vp9"',
diff --git a/lib/util/manifest_parser_utils.js b/lib/util/manifest_parser_utils.js
index dcc90178d8..33c9b31775 100644
--- a/lib/util/manifest_parser_utils.js
+++ b/lib/util/manifest_parser_utils.js
@@ -185,8 +185,7 @@ shaka.util.ManifestParserUtils.AUDIO_CODEC_REGEXPS_ = [
   /^mp4a/,
   /^[ae]c-3$/,
   /^ac-4$/,
-  /^dts[cx]$/, // DTS Surround Sound
-  /^[du]dts$/, // DTS Surround Sound
+  /^dts[cex]$/, // DTS Digital Surround (dtsc), DTS Express (dtse), DTS:X (dtsx)
 ];