From daf8d649f2bcadddabb2293fdadee9df436e7bf1 Mon Sep 17 00:00:00 2001
From: gnattu <gnattuoc@me.com>
Date: Mon, 29 Jul 2024 06:19:04 +0800
Subject: Add AC4 downmix

Signed-off-by: gnattu <gnattuoc@me.com>
---
 MediaBrowser.Model/Entities/DownMixStereoAlgorithms.cs | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

(limited to 'MediaBrowser.Model/Entities/DownMixStereoAlgorithms.cs')

diff --git a/MediaBrowser.Model/Entities/DownMixStereoAlgorithms.cs b/MediaBrowser.Model/Entities/DownMixStereoAlgorithms.cs
index be43ef32d..dcb2c802d 100644
--- a/MediaBrowser.Model/Entities/DownMixStereoAlgorithms.cs
+++ b/MediaBrowser.Model/Entities/DownMixStereoAlgorithms.cs
@@ -1,8 +1,7 @@
 namespace MediaBrowser.Model.Entities;
 
 /// <summary>
-/// An enum representing an algorithm to downmix 6ch+ to stereo.
-/// Algorithms sourced from https://superuser.com/questions/852400/properly-downmix-5-1-to-stereo-using-ffmpeg/1410620#1410620.
+/// An enum representing an algorithm to downmix surround sound to stereo.
 /// </summary>
 public enum DownMixStereoAlgorithms
 {
@@ -13,16 +12,24 @@ public enum DownMixStereoAlgorithms
 
     /// <summary>
     /// Algorithm by Dave_750.
+    /// Sourced from https://superuser.com/questions/852400/properly-downmix-5-1-to-stereo-using-ffmpeg/1410620#1410620.
     /// </summary>
     Dave750 = 1,
 
     /// <summary>
     /// Nightmode Dialogue algorithm.
+    /// Sourced from https://superuser.com/questions/852400/properly-downmix-5-1-to-stereo-using-ffmpeg/1410620#1410620.
     /// </summary>
     NightmodeDialogue = 2,
 
     /// <summary>
     /// RFC7845 Section 5.1.1.5 defined algorithm.
     /// </summary>
-    Rfc7845 = 3
+    Rfc7845 = 3,
+
+    /// <summary>
+    /// AC-4 standard algorithm with its default gain values.
+    /// Defined in ETSI TS 103 190 Section 6.2.17
+    /// </summary>
+    Ac4 = 4
 }
-- 
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