From 19b9471a5743cf8ab729e935123cf4a3d1e6eba5 Mon Sep 17 00:00:00 2001
From: Nier4ever <20170127nwl@gmail.com>
Date: Mon, 4 Nov 2024 10:03:56 +0800
Subject: [PATCH] fix subtitle

---
 .../src/desktopMain/kotlin/ui/VideoPlayer.desktop.kt      | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/app/shared/video-player/src/desktopMain/kotlin/ui/VideoPlayer.desktop.kt b/app/shared/video-player/src/desktopMain/kotlin/ui/VideoPlayer.desktop.kt
index cc64e418d0..2ae901d8fc 100644
--- a/app/shared/video-player/src/desktopMain/kotlin/ui/VideoPlayer.desktop.kt
+++ b/app/shared/video-player/src/desktopMain/kotlin/ui/VideoPlayer.desktop.kt
@@ -441,7 +441,7 @@ class VlcjVideoPlayerState(parentCoroutineContext: CoroutineContext) : PlayerSta
     }
 
     private fun reloadSubtitleTracks() {
-        subtitleTracks.candidates.value = player.subpictures().trackDescriptions()
+        val newSubtitleTracks = player.subpictures().trackDescriptions()
             .filterNot { it.id() == -1 } // "Disable"
             .map {
                 SubtitleTrack(
@@ -451,7 +451,11 @@ class VlcjVideoPlayerState(parentCoroutineContext: CoroutineContext) : PlayerSta
                     listOf(Label(null, it.description())),
                 )
             }
-        subtitleTracks.current.value = subtitleTracks.candidates.value.firstOrNull()
+        // 新的字幕轨道和原来不同时才会更改，同时将 current 设置为新字幕轨道列表的第一个
+        if (subtitleTracks.candidates.value != newSubtitleTracks) {
+            subtitleTracks.candidates.value = newSubtitleTracks
+            subtitleTracks.current.value = newSubtitleTracks.firstOrNull()
+        }
     }
 
     private fun reloadAudioTracks() {