From 6e32ea052d4132645884e17d814922ce0ccd4576 Mon Sep 17 00:00:00 2001
From: dmitrylyzo <56478732+dmitrylyzo@users.noreply.github.com>
Date: Sat, 25 May 2024 11:50:34 -0400
Subject: [PATCH] Backport pull request #5452 from jellyfin-web/release-10.9.z

Limit maximum FLAC audio channels in video to 2 on webOS

Original-merge: 9d9b69edd52872086628e853c67facc4f181b1fb

Merged-by: thornbill <thornbill@users.noreply.github.com>

Backported-by: Joshua M. Boniface <joshua@boniface.me>
---
 src/scripts/browserDeviceProfile.js | 42 +++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/src/scripts/browserDeviceProfile.js b/src/scripts/browserDeviceProfile.js
index 542b535f88..737d93f4b0 100644
--- a/src/scripts/browserDeviceProfile.js
+++ b/src/scripts/browserDeviceProfile.js
@@ -883,6 +883,48 @@ export default function (options) {
         });
     }
 
+    if (browser.web0s) {
+        const flacConditions = [
+            // webOS doesn't seem to support FLAC with more than 2 channels
+            {
+                Condition: 'LessThanEqual',
+                Property: 'AudioChannels',
+                Value: '2',
+                IsRequired: false
+            }
+        ];
+
+        profile.CodecProfiles.push({
+            Type: 'VideoAudio',
+            Codec: 'flac',
+            Conditions: flacConditions
+        });
+
+        const flacTranscodingProfiles = [];
+
+        // Split each video transcoding profile with FLAC so that the containing FLAC is only applied to 2 channels audio
+        profile.TranscodingProfiles.forEach(transcodingProfile => {
+            if (transcodingProfile.Type !== 'Video') return;
+
+            const audioCodecs = transcodingProfile.AudioCodec.split(',');
+
+            if (!audioCodecs.includes('flac')) return;
+
+            const flacTranscodingProfile = { ...transcodingProfile };
+            flacTranscodingProfile.AudioCodec = 'flac';
+            flacTranscodingProfile.ApplyConditions = [
+                ...flacTranscodingProfile.ApplyConditions || [],
+                ...flacConditions
+            ];
+
+            flacTranscodingProfiles.push(flacTranscodingProfile);
+
+            transcodingProfile.AudioCodec = audioCodecs.filter(codec => codec != 'flac').join(',');
+        });
+
+        profile.TranscodingProfiles.push(...flacTranscodingProfiles);
+    }
+
     let maxH264Level = 42;
     let h264Profiles = 'high|main|baseline|constrained baseline';