Android Auto

android/app/build.gradle

@@ -69,3 +69,7 @@ android {
 flutter {
     source '../..'
 }
+
+dependencies {
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+}

android/app/src/main/AndroidManifest.xml

@@ -29,9 +29,16 @@
         <category android:name="android.intent.category.APP_MUSIC"/>
         <category android:name="android.intent.category.LAUNCHER"/>
       </intent-filter>
+      <intent-filter>
+        <action android:name="android.media.action.MEDIA_PLAY_FROM_SEARCH" />
+        <category android:name="android.intent.category.DEFAULT" />
+      </intent-filter>
     </activity>
-    <service android:name="com.ryanheise.audioservice.AudioService" android:foregroundServiceType="mediaPlayback"
-        android:exported="true">
+    <provider
+            android:name=".MediaItemContentProvider"
+            android:authorities="com.unicornsonlsd.finamp"
+            android:exported="true" />
+    <service android:name="com.ryanheise.audioservice.AudioService" android:foregroundServiceType="mediaPlayback" android:exported="true">
       <intent-filter>
         <action android:name="android.media.browse.MediaBrowserService" />
       </intent-filter>
@@ -43,8 +50,25 @@
       </intent-filter>
     </receiver>
 
+    <meta-data
+            android:name="com.google.android.gms.car.application"
+            android:resource="@xml/automotive_app_desc" />
+
     <!-- Don't delete the meta-data below.
              This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
     <meta-data android:name="flutterEmbedding" android:value="2" />
   </application>
+
+  <uses-feature
+          android:name="android.hardware.type.automotive"
+          android:required="true" />
+  <uses-feature
+          android:name="android.hardware.wifi"
+          android:required="false" />
+  <uses-feature
+          android:name="android.hardware.screen.portrait"
+          android:required="false" />
+  <uses-feature
+          android:name="android.hardware.screen.landscape"
+          android:required="false" />
 </manifest>

android/app/src/main/kotlin/com/unicornsonlsd/finamp/MainActivity.kt

@@ -3,4 +3,4 @@ package com.unicornsonlsd.finamp
 import io.flutter.embedding.android.FlutterActivity
 
 class MainActivity: FlutterActivity() {
-}
+}

android/app/src/main/kotlin/com/unicornsonlsd/finamp/MediaItemContentProvider.kt

@@ -0,0 +1,81 @@
+package com.unicornsonlsd.finamp
+
+import android.content.ContentProvider
+import android.content.ContentValues
+import android.database.Cursor
+import android.net.Uri
+import android.os.ParcelFileDescriptor
+import android.util.LruCache
+import java.io.File
+import java.io.FileOutputStream
+import java.net.URL
+
+class MediaItemContentProvider : ContentProvider() {
+
+    private lateinit var memoryCache : LruCache<String, ByteArray>
+
+    override fun openFile(uri: Uri, mode: String): ParcelFileDescriptor? {
+        if (uri.fragment != null) {
+            // we store the original scheme://host in fragment since it should be unused
+            val origin = Uri.parse(uri.fragment)
+            val fixedUri = uri.buildUpon().fragment(null).scheme(origin.scheme).authority(origin.authority).toString()
+
+            // check if we already cached the image
+            val bytes = memoryCache.get(fixedUri)
+            if (bytes != null) {
+                return openPipeHelper(uri, "application/octet-stream", null, bytes) {output, _, _, _, b ->
+                    FileOutputStream(output.fileDescriptor).write(b)
+                }
+            }
+
+            val response = URL(fixedUri).readBytes()
+            memoryCache.put(fixedUri, response)
+            return openPipeHelper(uri, "application/octet-stream", null, response) {output, _, _, _, b ->
+                FileOutputStream(output.fileDescriptor).write(b)
+            }
+        }
+
+        // this means it's a local image (downloaded or placeholder art)
+        return ParcelFileDescriptor.open(File(uri.path!!), ParcelFileDescriptor.MODE_READ_ONLY)
+    }
+
+    override fun onCreate(): Boolean {
+        // Get max available VM memory, exceeding this amount will throw an
+        // OutOfMemory exception. Stored in kilobytes as LruCache takes an
+        // int in its constructor.
+        val maxMemory = (Runtime.getRuntime().maxMemory() / 1024).toInt()
+
+        // Use 1/8th of the available memory for this memory cache.
+        val cacheSize = maxMemory / 8
+        memoryCache  = object : LruCache<String, ByteArray>(cacheSize) {
+
+            override fun sizeOf(key: String, value: ByteArray): Int {
+                // The cache size will be measured in kilobytes rather than
+                // number of items.
+                return value.size / 1024
+            }
+        }
+
+        return true
+    }
+
+    override fun query(uri: Uri, projection: Array<out String>?, selection: String?, selectionArgs: Array<out String>?, sortOrder: String?): Cursor? {
+        return null
+    }
+
+    override fun getType(uri: Uri): String? {
+        return null
+    }
+
+    override fun insert(uri: Uri, values: ContentValues?): Uri? {
+        return null
+    }
+
+    override fun delete(uri: Uri, selection: String?, selectionArgs: Array<out String>?): Int {
+        return 0
+    }
+
+    override fun update(uri: Uri, values: ContentValues?, selection: String?, selectionArgs: Array<out String>?): Int {
+        return 0
+    }
+}

android/app/src/main/res/drawable-mdpi/baseline_shuffle_24.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorControlNormal">
+  <path
+      android:fillColor="@android:color/white"
+      android:pathData="M10.59,9.17L5.41,4 4,5.41l5.17,5.17 1.42,-1.41zM14.5,4l2.04,2.04L4,18.59 5.41,20 17.96,7.46 20,9.5L20,4h-5.5zM14.83,13.41l-1.41,1.41 3.13,3.13L14.5,20L20,20v-5.5l-2.04,2.04 -3.13,-3.13z"/>
+</vector>

android/app/src/main/res/drawable-mdpi/baseline_shuffle_on_24.xml

@@ -0,0 +1,11 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorControlNormal">
+  <path
+      android:fillColor="@android:color/white"
+      android:pathData="M21,1L3,1c-1.1,0 -2,0.9 -2,2v18c0,1.1 0.9,2 2,2h18c1.1,0 2,-0.9 2,-2L23,3c0,-1.1 -0.9,-2 -2,-2zM10.59,9.17L5.41,4 4,5.41l5.17,5.17 1.42,-1.41zM14.5,4l2.04,2.04L4,18.59 5.41,20 17.96,7.46 20,9.5L20,4h-5.5zM14.83,13.41l-1.41,1.41 3.13,3.13L14.5,20L20,20v-5.5l-2.04,2.04 -3.13,-3.13z"
+      android:fillType="evenOdd"/>
+</vector>

android/app/src/main/res/xml/automotive_app_desc.xml

@@ -0,0 +1,3 @@
+<automotiveApp>
+    <uses name="media"/>
+</automotiveApp>

lib/components/MusicScreen/music_screen_tab_view.dart

@@ -53,6 +53,7 @@ class _MusicScreenTabViewState extends State<MusicScreenTabView>
 
   final _jellyfinApiHelper = GetIt.instance<JellyfinApiHelper>();
   final _isarDownloader = GetIt.instance<DownloadsService>();
+  final _finampUserHelper = GetIt.instance<FinampUserHelper>();
   StreamSubscription<void>? _refreshStream;
 
   ScrollController? controller;
@@ -73,7 +74,8 @@ class _MusicScreenTabViewState extends State<MusicScreenTabView>
           settings.tabSortOrder[widget.tabContentType]?.toString() ??
               SortOrder.ascending.toString();
       final newItems = await _jellyfinApiHelper.getItems(
-        parentItem: widget.view,
+        parentItem: widget.view ??
+            _finampUserHelper.currentUser?.currentView,
         includeItemTypes: widget.tabContentType.itemType.idString,
 
         // If we're on the songs tab, sort by "Album,SortName". This is what the

lib/components/PlayerScreen/queue_list.dart

@@ -794,7 +794,7 @@ class _CurrentTrackState extends State<CurrentTrack> {
                                       width: (screenSize.width -
                                               2 * horizontalPadding -
                                               albumImageSize) *
-                                          (playbackPosition!.inMilliseconds /
+                                          ((playbackPosition?.inMilliseconds ?? 0) /
                                               (mediaState?.mediaItem
                                                           ?.duration ??
                                                       const Duration(

lib/main.dart

@@ -1,4 +1,6 @@
 import 'dart:async';
+import 'dart:io';
+import 'dart:ui';
 
 import 'package:audio_service/audio_service.dart';
 import 'package:audio_session/audio_session.dart';
@@ -9,6 +11,7 @@ import 'package:finamp/screens/interaction_settings_screen.dart';
 import 'package:finamp/screens/login_screen.dart';
 import 'package:finamp/screens/playback_history_screen.dart';
 import 'package:finamp/screens/queue_restore_screen.dart';
+import 'package:finamp/services/android_auto_helper.dart';
 import 'package:finamp/services/downloads_service.dart';
 import 'package:finamp/services/downloads_service_backend.dart';
 import 'package:finamp/services/finamp_settings_helper.dart';
@@ -101,6 +104,20 @@ void main() async {
         : "en_US";
     await initializeDateFormatting(localeString, null);
 
+    final documentsDirectory = await getApplicationDocumentsDirectory();
+    final albumImageFile = File('${documentsDirectory.absolute.path}/images/album_white.png');
+    if (!(await albumImageFile.exists())) {
+      final albumImageBytes = await rootBundle.load("images/album_white.png");
+      final albumBuffer = albumImageBytes.buffer;
+      await albumImageFile.create(recursive: true);
+      await albumImageFile.writeAsBytes(
+        albumBuffer.asUint8List(
+          albumImageBytes.offsetInBytes,
+          albumImageBytes.lengthInBytes,
+        ),
+      );
+    }
+
     runApp(const Finamp());
   }
 }
@@ -223,6 +240,8 @@ Future<void> _setupPlaybackServices() async {
   final session = await AudioSession.instance;
   session.configure(const AudioSessionConfiguration.music());
 
+  GetIt.instance.registerSingleton<AndroidAutoHelper>(AndroidAutoHelper());
+
   final audioHandler = await AudioService.init(
     builder: () => MusicPlayerBackgroundTask(),
     config: AudioServiceConfig(
@@ -231,6 +250,9 @@ Future<void> _setupPlaybackServices() async {
       androidNotificationChannelName: "Playback",
       androidNotificationIcon: "mipmap/white",
       androidNotificationChannelId: "com.unicornsonlsd.finamp.audio",
+      androidBrowsableRootExtras: <String, dynamic>{
+        "android.media.browse.SEARCH_SUPPORTED" : true, // support showing search button on Android Auto as well as alternative search results on the player screen after voice search
+      }
     ),
   );
   // GetIt.instance.registerSingletonAsync<AudioHandler>(

lib/models/finamp_models.dart

@@ -523,6 +523,24 @@ enum TabContentType {
         return AppLocalizations.of(context)!.playlists;
     }
   }
+
+  static TabContentType fromItemType(String itemType) {
+    switch (itemType) {
+      case "Audio":
+        return TabContentType.songs;
+      case "MusicAlbum":
+        return TabContentType.albums;
+      case "MusicArtist":
+        return TabContentType.artists;
+      case "MusicGenre":
+        return TabContentType.genres;
+      case "Playlist":
+        return TabContentType.playlists;
+      default:
+        throw const FormatException("Unsupported itemType");
+    }
+  }
+
 }
 
 @HiveType(typeId: 39)
@@ -1661,3 +1679,48 @@ enum TranscodeDownloadsSetting {
   @HiveField(2)
   ask;
 }
+
+@HiveType(typeId: 67)
+enum MediaItemParentType {
+  @HiveField(0)
+  collection,
+  @HiveField(1)
+  rootCollection,
+  @HiveField(2)
+  instantMix,
+}
+
+@JsonSerializable()
+@HiveType(typeId: 68)
+class MediaItemId {
+
+  MediaItemId({
+    required this.contentType,
+    required this.parentType,
+    this.itemId,
+    this.parentId,
+  });
+
+  @HiveField(0)
+  TabContentType contentType;
+
+  @HiveField(1)
+  MediaItemParentType parentType;
+
+  @HiveField(2)
+  String? itemId;  
+
+  @HiveField(3)
+  String? parentId;
+
+  factory MediaItemId.fromJson(Map<String, dynamic> json) =>
+      _$MediaItemIdFromJson(json);
+
+  Map<String, dynamic> toJson() => _$MediaItemIdToJson(this);
+
+  @override
+  String toString() {
+    return jsonEncode(toJson());
+  }
+
+}