Add Helper to setup PreloadConfiguration

pillarbox-demo/src/main/java/ch/srgssr/pillarbox/demo/ui/player/SimplePlayerViewModel.kt

@@ -20,10 +20,12 @@ import ch.srgssr.pillarbox.demo.shared.di.PlayerModule
 import ch.srgssr.pillarbox.player.PillarboxPlayer
 import ch.srgssr.pillarbox.player.asset.timeRange.Chapter
 import ch.srgssr.pillarbox.player.asset.timeRange.Credit
+import ch.srgssr.pillarbox.player.extension.PreloadConfiguration
 import ch.srgssr.pillarbox.player.extension.setHandleAudioFocus
 import ch.srgssr.pillarbox.player.extension.toRational
 import ch.srgssr.pillarbox.player.utils.StringUtil
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlin.time.Duration.Companion.seconds
 
 /**
  * Simple player view model than handle a PillarboxPlayer [player]
@@ -72,6 +74,9 @@ class SimplePlayerViewModel(application: Application) : AndroidViewModel(applica
      */
     fun playUri(items: List<DemoItem>) {
         player.setMediaItems(items.map { it.toMediaItem() })
+        if (items.size > 1) {
+            player.preloadConfiguration = PreloadConfiguration(5.seconds)
+        }
         player.prepare()
         player.play()
     }

pillarbox-player/src/main/java/ch/srgssr/pillarbox/player/extension/PreloadConfiguration.kt

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) SRG SSR. All rights reserved.
+ * License information is available from the LICENSE file.
+ */
+package ch.srgssr.pillarbox.player.extension
+
+import androidx.media3.common.C
+import androidx.media3.exoplayer.ExoPlayer.PreloadConfiguration
+import kotlin.time.Duration
+
+/**
+ * @param targetPreloadDuration The target duration to preload or `null` to disable preloading.
+ * @return [PreloadConfiguration]
+ */
+fun PreloadConfiguration(targetPreloadDuration: Duration?): PreloadConfiguration {
+    return PreloadConfiguration(targetPreloadDuration?.inWholeMicroseconds ?: C.TIME_UNSET)
+}