mediaplayer lifecycle / performance

tvlib/src/main/kotlin/org/mjdev/tvlib/extensions/LifecycleExt.kt

@@ -0,0 +1,37 @@
+/*
+ *  Copyright (c) Milan Jurkulák 2023.
+ *  Contact:
+ *  e: mimoccc@gmail.com
+ *  e: mj@mjdev.org
+ *  w: https://mjdev.org
+ */
+
+package org.mjdev.tvlib.extensions
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.remember
+import androidx.compose.ui.platform.LocalLifecycleOwner
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleEventObserver
+import androidx.lifecycle.LifecycleOwner
+
+object LifecycleExt {
+
+    @Composable
+    fun rememberLifeCycleEventObserver(
+        key1: Any? = Unit,
+        lifecycleOwner: LifecycleOwner = LocalLifecycleOwner.current,
+        lifecycle: Lifecycle = lifecycleOwner.lifecycle,
+        onEvent: (source: LifecycleOwner, event: Lifecycle.Event) -> Unit
+    ) = DisposableEffect(key1) {
+        val observer = LifecycleEventObserver { owner, event ->
+            onEvent(owner, event)
+        }
+        lifecycle.addObserver(observer)
+        onDispose {
+            lifecycle.removeObserver(observer)
+        }
+    }
+
+}

tvlib/src/main/kotlin/org/mjdev/tvlib/ui/components/media/ExoPlayerImpl.kt

@@ -21,6 +21,7 @@ import android.view.Surface
 import android.view.SurfaceHolder
 import android.view.SurfaceView
 import android.view.TextureView
+import android.view.View
 import androidx.compose.foundation.focusable
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.size
@@ -33,6 +34,8 @@ import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.viewinterop.AndroidView
 import androidx.core.content.getSystemService
+import androidx.lifecycle.Lifecycle.Event.ON_PAUSE
+import androidx.lifecycle.Lifecycle.Event.ON_RESUME
 import androidx.media3.common.AudioAttributes
 import androidx.media3.common.DeviceInfo
 import androidx.media3.common.MediaItem
@@ -54,6 +57,7 @@ import androidx.media3.ui.PlayerControlView
 import androidx.media3.ui.PlayerNotificationManager
 import androidx.media3.ui.PlayerView
 import org.mjdev.tvlib.extensions.ComposeExt.isEditMode
+import org.mjdev.tvlib.extensions.LifecycleExt.rememberLifeCycleEventObserver
 import org.mjdev.tvlib.extensions.ModifierExt.recomposeHighlighter
 import org.mjdev.tvlib.extensions.ViewExt.controller
 import org.mjdev.tvlib.extensions.ViewExt.findView
@@ -66,7 +70,6 @@ class ExoPlayerImpl(
     private val exoPlayer: ExoPlayer = ExoPlayer.Builder(context).build()
 ) : IMediaPlayer, PlayerNotificationManager.MediaDescriptionAdapter {
 
-    // todo lifecycle
     private val playerNotificationManager by lazy {
         val notifyChannelName = this::class.java.`package`?.name ?: "MediaPlayer"
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
@@ -109,6 +112,7 @@ class ExoPlayerImpl(
         return null
     }
 
+    @Suppress("UNUSED_VARIABLE")
     @UnstableApi
     @Composable
     override fun GetPlayerView() {
@@ -147,6 +151,26 @@ class ExoPlayerImpl(
                 }
             }
         }
+        val lifecycleObserver = rememberLifeCycleEventObserver(
+            exoPlayer
+        ) { _, event ->
+            when (event) {
+                ON_PAUSE -> {
+                    audioPlayerView.pause()
+                    playerView.player = null
+                    playerView.visibility = View.INVISIBLE
+                }
+
+                ON_RESUME -> {
+                    audioPlayerView.resume()
+                    playerView.visibility = View.VISIBLE
+                    playerView.player = exoPlayer
+                }
+
+                else -> {
+                }
+            }
+        }
         Box(
             modifier = Modifier
                 .recomposeHighlighter()