playback: readd service reinit

Make sure the service is properly re-initialized when it dies and is
then restarted.

app/src/main/java/org/oxycblt/auxio/playback/state/PlaybackStateHolder.kt

@@ -62,7 +62,7 @@ interface PlaybackStateHolder {
 
     fun handleDeferred(action: DeferredPlayback): Boolean
 
-    fun applySavedState(parent: MusicParent?, rawQueue: RawQueue)
+    fun applySavedState(parent: MusicParent?, rawQueue: RawQueue, ack: StateAck.NewPlayback?)
 }
 
 sealed interface StateAck {

app/src/main/java/org/oxycblt/auxio/playback/state/PlaybackStateManager.kt

@@ -217,6 +217,11 @@ interface PlaybackStateManager {
      */
     fun playing(isPlaying: Boolean)
 
+    /**
+     * Update the current [RepeatMode].
+     *
+     * @param repeatMode The new [RepeatMode].
+     */
     fun repeatMode(repeatMode: RepeatMode)
 
     /**
@@ -407,8 +412,11 @@ class PlaybackStateManagerImpl @Inject constructor() : PlaybackStateManager {
         }
 
         this.stateHolder = stateHolder
-
-        // TODO: Re-init player
+        if (isInitialized) {
+            stateHolder.applySavedState(stateMirror.parent, stateMirror.rawQueue, null)
+            stateHolder.seekTo(stateMirror.progression.calculateElapsedPositionMs())
+            stateHolder.playing(false)
+        }
     }
 
     @Synchronized
@@ -770,12 +778,14 @@ class PlaybackStateManagerImpl @Inject constructor() : PlaybackStateManager {
 
         if (oldStateMirror.rawQueue != rawQueue) {
             logD("Queue changed, must reload player")
-            stateHolder?.applySavedState(parent, rawQueue)
+            stateHolder?.applySavedState(parent, rawQueue, StateAck.NewPlayback)
+            stateHolder?.playing(false)
         }
 
         if (oldStateMirror.progression.calculateElapsedPositionMs() != savedState.positionMs) {
             logD("Seeking to saved position ${savedState.positionMs}ms")
             stateHolder?.seekTo(savedState.positionMs)
+            stateHolder?.playing(false)
         }
 
         isInitialized = true

app/src/main/java/org/oxycblt/auxio/playback/system/PlaybackService.kt

@@ -369,11 +369,15 @@ class PlaybackService :
         return true
     }
 
-    override fun applySavedState(parent: MusicParent?, rawQueue: RawQueue) {
+    override fun applySavedState(
+        parent: MusicParent?,
+        rawQueue: RawQueue,
+        ack: StateAck.NewPlayback?
+    ) {
         this.parent = parent
         player.applyQueue(rawQueue)
         player.prepare()
-        playbackManager.ack(this, StateAck.NewPlayback)
+        ack?.let { playbackManager.ack(this, it) }
     }
 
     // --- PLAYER OVERRIDES ---