Add switch to disable volume normalization

app/src/main/kotlin/it/vfsfitvnm/vimusic/services/PlayerService.kt

@@ -304,15 +304,17 @@ class PlayerService : MediaSessionService(), MediaSession.Callback, MediaNotific
     }
 
     private fun normalizeVolume() {
-        player.volume = player.currentMediaItem?.mediaId?.let { mediaId ->
-            songPendingLoudnessDb.getOrElse(mediaId) {
-                player.currentMediaItem?.mediaMetadata?.extras?.getFloat("loudnessDb")
-            }
-                ?.takeIf { it > 0 }
-                ?.let { loudnessDb ->
-                    (1f - (0.01f + loudnessDb / 15)).coerceIn(0.1f, 1f)
+        if (preferences.volumeNormalization) {
+            player.volume = player.currentMediaItem?.mediaId?.let { mediaId ->
+                songPendingLoudnessDb.getOrElse(mediaId) {
+                    player.currentMediaItem?.mediaMetadata?.extras?.getFloat("loudnessDb")
                 }
-        } ?: 1f
+                    ?.takeIf { it > 0 }
+                    ?.let { loudnessDb ->
+                        (1f - (0.01f + loudnessDb / 15)).coerceIn(0.1f, 1f)
+                    }
+            } ?: 1f
+        }
     }
 
     override fun onAddMediaItems(

app/src/main/kotlin/it/vfsfitvnm/vimusic/ui/screens/settings/PlayerSettingsScreen.kt

@@ -248,16 +248,6 @@ fun PlayerSettingsScreen() {
                     )
                 }
 
-//                SwitchSettingEntry(
-//                    title = "Persistent queue",
-//                    text = "Save and restore playing songs",
-//                    isChecked = preferences.persistentQueue,
-//                    onCheckedChange = {
-//                        preferences.persistentQueue = it
-//                    },
-//                    isEnabled = false
-//                )
-
                 SwitchSettingEntry(
                     title = "Skip silence",
                     text = "Skip silent parts during playback",
@@ -271,6 +261,15 @@ fun PlayerSettingsScreen() {
                     }
                 )
 
+                SwitchSettingEntry(
+                    title = "Loudness normalization",
+                    text = "Lower the volume to a standard level",
+                    isChecked = preferences.volumeNormalization,
+                    onCheckedChange = {
+                        preferences.volumeNormalization = it
+                    }
+                )
+
                 SettingsEntry(
                     title = "Equalizer",
                     text = "Interact with the system equalizer",

app/src/main/kotlin/it/vfsfitvnm/vimusic/utils/Preferences.kt

@@ -25,6 +25,7 @@ class Preferences(holder: SharedPreferences) : SharedPreferences by holder {
     var coilDiskCacheMaxSizeBytes by preference("coilDiskCacheMaxSizeBytes", 512L * 1024 * 1024)
     var exoPlayerDiskCacheMaxSizeBytes by preference("exoPlayerDiskCacheMaxSizeBytes", 512L * 1024 * 1024)
     var skipSilence by preference("skipSilence", false)
+    var volumeNormalization by preference("volumeNormalization", true)
     var yourPlaylistsGridRowCount by preference("yourPlaylistsGridRowCount", 2)
 }