cache artwork bitmap

app/src/tempus/java/com/cappielloantonio/tempo/service/MediaService.kt

@@ -4,6 +4,8 @@ import android.app.PendingIntent.FLAG_IMMUTABLE
 import android.app.PendingIntent.FLAG_UPDATE_CURRENT
 import android.app.TaskStackBuilder
 import android.content.Intent
+import android.graphics.Bitmap
+import android.graphics.drawable.Drawable
 import android.net.ConnectivityManager
 import android.net.Network
 import android.net.NetworkCapabilities
@@ -11,6 +13,7 @@ import android.os.Binder
 import android.os.IBinder
 import android.os.Handler
 import android.os.Looper
+import android.text.TextUtils
 import android.util.Log
 import androidx.core.content.ContextCompat
 import androidx.media3.cast.CastPlayer
@@ -25,7 +28,10 @@ import androidx.media3.exoplayer.DefaultLoadControl
 import androidx.media3.exoplayer.ExoPlayer
 import androidx.media3.session.MediaLibraryService
 import androidx.media3.session.MediaSession.ControllerInfo
+import com.bumptech.glide.request.target.CustomTarget
+import com.bumptech.glide.request.transition.Transition
 import com.cappielloantonio.tempo.repository.AutomotiveRepository
+import com.cappielloantonio.tempo.glide.CustomGlideRequest
 import com.cappielloantonio.tempo.repository.QueueRepository
 import com.cappielloantonio.tempo.ui.activity.MainActivity
 import com.cappielloantonio.tempo.util.AssetLinkUtil
@@ -39,6 +45,7 @@ import com.cappielloantonio.tempo.widget.WidgetUpdateManager
 import com.google.android.gms.cast.framework.CastContext
 import com.google.android.gms.common.ConnectionResult
 import com.google.android.gms.common.GoogleApiAvailability
+import java.util.Optional
 
 @UnstableApi
 class MediaService : MediaLibraryService(), SessionAvailabilityListener {
@@ -49,6 +56,7 @@ class MediaService : MediaLibraryService(), SessionAvailabilityListener {
     private lateinit var librarySessionCallback: MediaLibrarySessionCallback
     private lateinit var networkCallback: CustomNetworkCallback
     lateinit var equalizerManager: EqualizerManager
+    @Volatile private var artCache : Optional<Optional<Bitmap>> = Optional.empty<Optional<Bitmap>>()
 
     inner class LocalBinder : Binder() {
         fun getEqualizerManager(): EqualizerManager {
@@ -278,6 +286,7 @@ class MediaService : MediaLibraryService(), SessionAvailabilityListener {
             }
 
             override fun onIsPlayingChanged(isPlaying: Boolean) {
+                artCache = Optional.empty()
                 if (!isPlaying) {
                     MediaManager.setPlayingPausedTimestamp(
                         player.currentMediaItem,
@@ -339,6 +348,16 @@ class MediaService : MediaLibraryService(), SessionAvailabilityListener {
         }
     }
 
+    private inner class CustomGlideTarget : CustomTarget<Bitmap>() {
+        override fun onResourceReady(resource: Bitmap, transition: Transition<in Bitmap>?) {
+            artCache = Optional.of(Optional.of(resource))
+        }
+
+        override fun onLoadCleared(placeholder: Drawable?) {
+            artCache = Optional.of(Optional.empty())
+        }
+    }
+
     private fun updateWidget() {
         val mi = player.currentMediaItem
         val title = mi?.mediaMetadata?.title?.toString()
@@ -357,12 +376,21 @@ class MediaService : MediaLibraryService(), SessionAvailabilityListener {
             ?: AssetLinkUtil.buildLink(AssetLinkUtil.TYPE_ARTIST, extras?.getString("artistId"))
         val position = player.currentPosition.takeIf { it != C.TIME_UNSET } ?: 0L
         val duration = player.duration.takeIf { it != C.TIME_UNSET } ?: 0L
+
+        if (!TextUtils.isEmpty(coverId) && artCache.isEmpty) {
+            CustomGlideRequest.loadAlbumArtBitmap(
+                applicationContext,
+                coverId,
+                WidgetUpdateManager.WIDGET_SAFE_ART_SIZE,
+                CustomGlideTarget())
+        }
+
         WidgetUpdateManager.updateFromState(
             this,
             title ?: "",
             artist ?: "",
             album ?: "",
-            coverId,
+            artCache,
             player.isPlaying,
             player.shuffleModeEnabled,
             player.repeatMode,