Use Provider to avoid creating AudioOffloadManager when disabled.

media-sample/src/main/java/com/google/android/horologist/mediasample/di/PlaybackServiceModule.kt

@@ -67,6 +67,7 @@ import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.cancel
 import kotlinx.coroutines.launch
 import okhttp3.Call
+import javax.inject.Provider
 
 @Module
 @InstallIn(ServiceComponent::class)
@@ -214,7 +215,7 @@ object PlaybackServiceModule {
         audioOutputSelector: AudioOutputSelector,
         playbackRules: PlaybackRules,
         logger: ErrorReporter,
-        audioOffloadManager: AudioOffloadManager,
+        audioOffloadManager: Provider<AudioOffloadManager>,
         appConfig: AppConfig
     ): Player =
         WearConfiguredPlayer(
@@ -231,7 +232,7 @@ object PlaybackServiceModule {
 
             if (appConfig.offloadEnabled && Build.VERSION.SDK_INT >= 30) {
                 serviceCoroutineScope.launch {
-                    audioOffloadManager.connect(exoPlayer)
+                    audioOffloadManager.get().connect(exoPlayer)
                 }
             }
         }

media-sample/src/main/java/com/google/android/horologist/mediasample/ui/debug/AudioDebugScreenViewModel.kt

@@ -26,21 +26,32 @@ import com.google.android.horologist.media.repository.PlayerRepository
 import com.google.android.horologist.media3.offload.AudioOffloadManager
 import com.google.android.horologist.media3.offload.AudioOffloadStatus
 import com.google.android.horologist.media3.util.toAudioFormat
+import com.google.android.horologist.mediasample.ui.AppConfig
 import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.flow.stateIn
 import javax.inject.Inject
+import javax.inject.Provider
 
 @HiltViewModel
 class AudioDebugScreenViewModel @Inject constructor(
-    private val audioOffloadManager: AudioOffloadManager,
+    private val audioOffloadManager: Provider<AudioOffloadManager>,
+    private val appConfig: AppConfig,
     private val audioSink: DefaultAudioSink,
     playerRepository: PlayerRepository,
 ) : ViewModel() {
+    fun audioOffloadFlow(): Flow<AudioOffloadStatus> = if (appConfig.offloadEnabled)
+        audioOffloadManager.get().offloadStatus
+    else {
+        flowOf(AudioOffloadStatus.Disabled)
+    }
+
     val uiState: StateFlow<UiState?> = combine(
-        audioOffloadManager.offloadStatus,
+        audioOffloadFlow(),
         playerRepository.currentMedia
     ) { audioOffloadStatus, currentMedia ->
 

media3-backend/api/current.api

@@ -169,6 +169,12 @@ package com.google.android.horologist.media3.offload {
     property public final com.google.android.horologist.media3.offload.AudioOffloadStrategy? strategy;
     property public final String? strategyStatus;
     property public final Boolean? trackOffload;
+    field public static final com.google.android.horologist.media3.offload.AudioOffloadStatus.Companion Companion;
+  }
+
+  public static final class AudioOffloadStatus.Companion {
+    method public com.google.android.horologist.media3.offload.AudioOffloadStatus getDisabled();
+    property public final com.google.android.horologist.media3.offload.AudioOffloadStatus Disabled;
   }
 
   @com.google.android.horologist.media3.ExperimentalHorologistMedia3BackendApi public interface AudioOffloadStrategy {

media3-backend/src/main/java/com/google/android/horologist/media3/offload/AudioOffloadStatus.kt

@@ -50,4 +50,18 @@ public data class AudioOffloadStatus(
             null -> "N/A"
         }
     }
+
+    public companion object {
+        public val Disabled: AudioOffloadStatus = AudioOffloadStatus(
+            offloadSchedulingEnabled = false,
+            sleepingForOffload = false,
+            trackOffload = false,
+            format = null,
+            isPlaying = false,
+            errors = listOf(),
+            offloadTimes = OffloadTimes(),
+            strategyStatus = null,
+            strategy = null
+        )
+    }
 }