Merge branch '3.5.0' into dev

.github/workflows/android.yml

@@ -2,9 +2,9 @@ name: Android CI
 
 on:
   push:
-    branches: [ "dev" ]
+    branches: []
   pull_request:
-    branches: [ "dev" ]
+    branches: []
     
 jobs:
   build:

CHANGELOG.md

@@ -8,10 +8,16 @@
 
 #### What's Improved
 - Album covers are now loaded on a per-song basis
-- Correctly interpret MP4 sort tags
+- MP4 sort tags are now correctly interpreted
+- Support multi-value MP4 tags with multiple `data` sub-atoms are parsed correctly
+- M3U paths are now interpreted both as relative and absolute regardless of the format
+- Added support for M3U paths starting with /storage/
 
 #### What's Fixed
 - Fixed repeat mode not restoring on startup
+- Fixed rewinding not occuring when skipping back at the beginning of the queue if
+rewind before skipping was turned off
+- Fixed artist duplication when inconsistent MusicBrainz ID tag naming was used
 
 #### What's Changed
 - For the time being, the media notification will not follow Album Covers or 1:1 Covers settings
@@ -20,6 +26,11 @@
 #### dev -> dev1 changes
 - Re-added ability to open app from clicking on notification
 - Removed tasker plugin
+- Support multi-value MP4 tags with multiple `data` sub-atoms are parsed correctly
+- M3U paths are now interpreted both as relative and absolute regardless of the format
+- Added support for M3U paths starting with /storage/
+- Fixed artist duplication when inconsistent MusicBrainz ID tag naming was used
+- Made album cover keying more efficient at the cost of resillients
 
 ## 3.4.3
 

app/src/main/java/org/oxycblt/auxio/image/extractor/CoverExtractor.kt

@@ -157,8 +157,8 @@ constructor(
         }
 
     private suspend fun extractQualityCover(cover: Cover.Embedded) =
-        extractAospMetadataCover(cover)
-            ?: extractExoplayerCover(cover) ?: extractMediaStoreCover(cover)
+        extractExoplayerCover(cover)
+            ?: extractAospMetadataCover(cover) ?: extractMediaStoreCover(cover)
 
     private fun extractAospMetadataCover(cover: Cover.Embedded): InputStream? =
         MediaMetadataRetriever().run {

app/src/main/java/org/oxycblt/auxio/image/extractor/DHash.kt

@@ -26,6 +26,7 @@ import android.graphics.ColorMatrixColorFilter
 import android.graphics.Paint
 import java.math.BigInteger
 
+@Suppress("UNUSED")
 fun Bitmap.dHash(hashSize: Int = 16): String {
     // Step 1: Resize the bitmap to a fixed size
     val resizedBitmap = Bitmap.createScaledBitmap(this, hashSize + 1, hashSize, true)

app/src/main/java/org/oxycblt/auxio/music/MusicViewModel.kt

@@ -164,7 +164,10 @@ constructor(
                 }
 
                 val deviceLibrary = musicRepository.deviceLibrary ?: return@launch
-                val songs = importedPlaylist.paths.mapNotNull(deviceLibrary::findSongByPath)
+                val songs =
+                    importedPlaylist.paths.mapNotNull {
+                        it.firstNotNullOfOrNull(deviceLibrary::findSongByPath)
+                    }
 
                 if (songs.isEmpty()) {
                     logE("No songs found")

app/src/main/java/org/oxycblt/auxio/music/cache/CacheDatabase.kt

@@ -32,7 +32,7 @@ import org.oxycblt.auxio.music.info.Date
 import org.oxycblt.auxio.music.metadata.correctWhitespace
 import org.oxycblt.auxio.music.metadata.splitEscaped
 
-@Database(entities = [CachedSong::class], version = 45, exportSchema = false)
+@Database(entities = [CachedSong::class], version = 46, exportSchema = false)
 abstract class CacheDatabase : RoomDatabase() {
     abstract fun cachedSongsDao(): CachedSongsDao
 }

app/src/main/java/org/oxycblt/auxio/music/external/ExternalPlaylistManager.kt

@@ -76,7 +76,9 @@ data class ExportConfig(val absolute: Boolean, val windowsPaths: Boolean)
  * @see ExternalPlaylistManager
  * @see M3U
  */
-data class ImportedPlaylist(val name: String?, val paths: List<Path>)
+data class ImportedPlaylist(val name: String?, val paths: List<PossiblePaths>)
+
+typealias PossiblePaths = List<Path>
 
 class ExternalPlaylistManagerImpl
 @Inject

app/src/main/java/org/oxycblt/auxio/music/external/M3U.kt

@@ -29,9 +29,12 @@ import javax.inject.Inject
 import org.oxycblt.auxio.music.Playlist
 import org.oxycblt.auxio.music.fs.Components
 import org.oxycblt.auxio.music.fs.Path
+import org.oxycblt.auxio.music.fs.Volume
+import org.oxycblt.auxio.music.fs.VolumeManager
 import org.oxycblt.auxio.music.metadata.correctWhitespace
 import org.oxycblt.auxio.music.resolveNames
 import org.oxycblt.auxio.util.logE
+import org.oxycblt.auxio.util.unlikelyToBeNull
 
 /**
  * Minimal M3U file format implementation.
@@ -72,10 +75,16 @@ interface M3U {
     }
 }
 
-class M3UImpl @Inject constructor(@ApplicationContext private val context: Context) : M3U {
+class M3UImpl
+@Inject
+constructor(
+    @ApplicationContext private val context: Context,
+    private val volumeManager: VolumeManager
+) : M3U {
     override fun read(stream: InputStream, workingDirectory: Path): ImportedPlaylist? {
+        val volumes = volumeManager.getVolumes()
         val reader = BufferedReader(InputStreamReader(stream))
-        val paths = mutableListOf<Path>()
+        val paths = mutableListOf<PossiblePaths>()
         var name: String? = null
 
         consumeFile@ while (true) {
@@ -112,39 +121,13 @@ class M3UImpl @Inject constructor(@ApplicationContext private val context: Conte
             }
 
             // There is basically no formal specification of file paths in M3U, and it differs
-            // based on the US that generated it. These are the paths though that I assume most
-            // programs will generate.
-            val components =
-                when {
-                    path.startsWith('/') -> {
-                        // Unix absolute path. Note that we still assume this absolute path is in
-                        // the same volume as the M3U file. There's no sane way to map the volume
-                        // to the phone's volumes, so this is the only thing we can do.
-                        Components.parseUnix(path)
-                    }
-                    path.startsWith("./") -> {
-                        // Unix relative path, resolve it
-                        Components.parseUnix(path).absoluteTo(workingDirectory.components)
-                    }
-                    path.matches(WINDOWS_VOLUME_PREFIX_REGEX) -> {
-                        // Windows absolute path, we should get rid of the volume prefix, but
-                        // otherwise
-                        // the rest should be fine. Again, we have to disregard what the volume
-                        // actually
-                        // is since there's no sane way to map it to the phone's volumes.
-                        Components.parseWindows(path.substring(2))
-                    }
-                    path.startsWith(".\\") -> {
-                        // Windows relative path, we need to remove the .\\ prefix
-                        Components.parseWindows(path).absoluteTo(workingDirectory.components)
-                    }
-                    else -> {
-                        // No clue, parse by all separators and assume it's relative.
-                        Components.parseAny(path).absoluteTo(workingDirectory.components)
-                    }
-                }
+            // based on the programs that generated it. I more or less have to consider any possible
+            // interpretation as valid.
+            val interpretations = interpretPath(path)
+            val possibilities =
+                interpretations.flatMap { expandInterpretation(it, workingDirectory, volumes) }
 
-            paths.add(Path(workingDirectory.volume, components))
+            paths.add(possibilities)
         }
 
         return if (paths.isNotEmpty()) {
@@ -155,6 +138,44 @@ class M3UImpl @Inject constructor(@ApplicationContext private val context: Conte
         }
     }
 
+    private data class InterpretedPath(val components: Components, val likelyAbsolute: Boolean)
+
+    private fun interpretPath(path: String): List<InterpretedPath> =
+        when {
+            path.startsWith('/') -> listOf(InterpretedPath(Components.parseUnix(path), true))
+            path.startsWith("./") -> listOf(InterpretedPath(Components.parseUnix(path), false))
+            path.matches(WINDOWS_VOLUME_PREFIX_REGEX) ->
+                listOf(InterpretedPath(Components.parseWindows(path.substring(2)), true))
+            path.startsWith("\\") -> listOf(InterpretedPath(Components.parseWindows(path), true))
+            path.startsWith(".\\") -> listOf(InterpretedPath(Components.parseWindows(path), false))
+            else ->
+                listOf(
+                    InterpretedPath(Components.parseUnix(path), false),
+                    InterpretedPath(Components.parseWindows(path), true))
+        }
+
+    private fun expandInterpretation(
+        path: InterpretedPath,
+        workingDirectory: Path,
+        volumes: List<Volume>
+    ): List<Path> {
+        val absoluteInterpretation = Path(workingDirectory.volume, path.components)
+        val relativeInterpretation =
+            Path(workingDirectory.volume, path.components.absoluteTo(workingDirectory.components))
+        val volumeExactMatch = volumes.find { it.components?.contains(path.components) == true }
+        val volumeInterpretation =
+            volumeExactMatch?.let {
+                val components =
+                    unlikelyToBeNull(volumeExactMatch.components).containing(path.components)
+                Path(volumeExactMatch, components)
+            }
+        return if (path.likelyAbsolute) {
+            listOfNotNull(volumeInterpretation, absoluteInterpretation, relativeInterpretation)
+        } else {
+            listOfNotNull(relativeInterpretation, volumeInterpretation, absoluteInterpretation)
+        }
+    }
+
     override fun write(
         playlist: Playlist,
         outputStream: OutputStream,

app/src/main/java/org/oxycblt/auxio/music/fs/Fs.kt

@@ -158,6 +158,8 @@ value class Components private constructor(val components: List<String>) {
         return components == other.components.take(components.size)
     }
 
+    fun containing(other: Components) = Components(other.components.drop(components.size))
+
     companion object {
         /**
          * Parses a path string into a [Components] instance by the unix path separator (/).

app/src/main/java/org/oxycblt/auxio/music/metadata/TagWorker.kt

@@ -18,7 +18,6 @@
  
 package org.oxycblt.auxio.music.metadata
 
-import android.graphics.BitmapFactory
 import androidx.core.text.isDigitsOnly
 import androidx.media3.common.MediaItem
 import androidx.media3.exoplayer.MetadataRetriever
@@ -26,8 +25,8 @@ import androidx.media3.exoplayer.source.MediaSource
 import androidx.media3.exoplayer.source.TrackGroupArray
 import java.util.concurrent.Future
 import javax.inject.Inject
+import kotlin.math.min
 import org.oxycblt.auxio.image.extractor.CoverExtractor
-import org.oxycblt.auxio.image.extractor.dHash
 import org.oxycblt.auxio.music.device.RawSong
 import org.oxycblt.auxio.music.fs.toAudioUri
 import org.oxycblt.auxio.music.info.Date
@@ -106,10 +105,24 @@ private class TagWorkerImpl(
             populateWithId3v2(textTags.id3v2)
             populateWithVorbis(textTags.vorbis)
 
-            val coverInputStream = coverExtractor.findCoverDataInMetadata(metadata)
-            val bitmap = coverInputStream?.use { BitmapFactory.decodeStream(it) }
-            rawSong.coverPerceptualHash = bitmap?.dHash()
-            bitmap?.recycle()
+            coverExtractor.findCoverDataInMetadata(metadata)?.use {
+                val available = it.available()
+                val skip = min(available / 2L, available - COVER_KEY_SAMPLE.toLong())
+                it.skip(skip)
+                val bytes = ByteArray(COVER_KEY_SAMPLE)
+                it.read(bytes)
+
+                @OptIn(ExperimentalStdlibApi::class) val byteString = bytes.toHexString()
+
+                rawSong.coverPerceptualHash = byteString
+            }
+
+            // OPTIONAL: Nicer cover art keying using an actual perceptual hash
+            // Really bad idea if you have big cover arts. Okay idea if you have different
+            // formats for the same cover art.
+            //  val bitmap = coverInputStream?.use { BitmapFactory.decodeStream(it) }
+            //  rawSong.coverPerceptualHash = bitmap?.dHash()
+            //  bitmap?.recycle()
 
             // OPUS base gain interpretation code: This is likely not needed, as the media player
             // should be using the base gain already. Uncomment if that's not the case.
@@ -140,7 +153,9 @@ private class TagWorkerImpl(
 
     private fun populateWithId3v2(textFrames: Map<String, List<String>>) {
         // Song
-        textFrames["TXXX:musicbrainz release track id"]?.let { rawSong.musicBrainzId = it.first() }
+        (textFrames["TXXX:musicbrainz release track id"]
+                ?: textFrames["TXXX:musicbrainz_releasetrackid"])
+            ?.let { rawSong.musicBrainzId = it.first() }
         textFrames["TIT2"]?.let { rawSong.name = it.first() }
         textFrames["TSOT"]?.let { rawSong.sortName = it.first() }
 
@@ -170,7 +185,9 @@ private class TagWorkerImpl(
             ?.let { rawSong.date = it }
 
         // Album
-        textFrames["TXXX:musicbrainz album id"]?.let { rawSong.albumMusicBrainzId = it.first() }
+        (textFrames["TXXX:musicbrainz album id"] ?: textFrames["TXXX:musicbrainz_albumid"])?.let {
+            rawSong.albumMusicBrainzId = it.first()
+        }
         textFrames["TALB"]?.let { rawSong.albumName = it.first() }
         textFrames["TSOA"]?.let { rawSong.albumSortName = it.first() }
         (textFrames["TXXX:musicbrainz album type"]
@@ -180,7 +197,9 @@ private class TagWorkerImpl(
             ?.let { rawSong.releaseTypes = it }
 
         // Artist
-        textFrames["TXXX:musicbrainz artist id"]?.let { rawSong.artistMusicBrainzIds = it }
+        (textFrames["TXXX:musicbrainz artist id"] ?: textFrames["TXXX:musicbrainz_artistid"])?.let {
+            rawSong.artistMusicBrainzIds = it
+        }
         (textFrames["TXXX:artists"] ?: textFrames["TPE1"])?.let { rawSong.artistNames = it }
         (textFrames["TXXX:artistssort"]
                 ?: textFrames["TXXX:artists_sort"] ?: textFrames["TXXX:artists sort"]
@@ -188,9 +207,9 @@ private class TagWorkerImpl(
             ?.let { rawSong.artistSortNames = it }
 
         // Album artist
-        textFrames["TXXX:musicbrainz album artist id"]?.let {
-            rawSong.albumArtistMusicBrainzIds = it
-        }
+        (textFrames["TXXX:musicbrainz album artist id"]
+                ?: textFrames["TXXX:musicbrainz_albumartistid"])
+            ?.let { rawSong.albumArtistMusicBrainzIds = it }
         (textFrames["TXXX:albumartists"]
                 ?: textFrames["TXXX:album_artists"] ?: textFrames["TXXX:album artists"]
                     ?: textFrames["TPE2"])
@@ -261,7 +280,9 @@ private class TagWorkerImpl(
 
     private fun populateWithVorbis(comments: Map<String, List<String>>) {
         // Song
-        comments["musicbrainz_releasetrackid"]?.let { rawSong.musicBrainzId = it.first() }
+        (comments["musicbrainz_releasetrackid"] ?: comments["musicbrainz release track id"])?.let {
+            rawSong.musicBrainzId = it.first()
+        }
         comments["title"]?.let { rawSong.name = it.first() }
         comments["titlesort"]?.let { rawSong.sortName = it.first() }
 
@@ -290,20 +311,28 @@ private class TagWorkerImpl(
             ?.let { rawSong.date = it }
 
         // Album
-        comments["musicbrainz_albumid"]?.let { rawSong.albumMusicBrainzId = it.first() }
+        (comments["musicbrainz_albumid"] ?: comments["musicbrainz album id"])?.let {
+            rawSong.albumMusicBrainzId = it.first()
+        }
         comments["album"]?.let { rawSong.albumName = it.first() }
         comments["albumsort"]?.let { rawSong.albumSortName = it.first() }
-        comments["releasetype"]?.let { rawSong.releaseTypes = it }
+        (comments["releasetype"] ?: comments["musicbrainz album type"])?.let {
+            rawSong.releaseTypes = it
+        }
 
         // Artist
-        comments["musicbrainz_artistid"]?.let { rawSong.artistMusicBrainzIds = it }
+        (comments["musicbrainz_artistid"] ?: comments["musicbrainz artist id"])?.let {
+            rawSong.artistMusicBrainzIds = it
+        }
         (comments["artists"] ?: comments["artist"])?.let { rawSong.artistNames = it }
         (comments["artistssort"]
                 ?: comments["artists_sort"] ?: comments["artists sort"] ?: comments["artistsort"])
             ?.let { rawSong.artistSortNames = it }
 
         // Album artist
-        comments["musicbrainz_albumartistid"]?.let { rawSong.albumArtistMusicBrainzIds = it }
+        (comments["musicbrainz_albumartistid"] ?: comments["musicbrainz album artist id"])?.let {
+            rawSong.albumArtistMusicBrainzIds = it
+        }
         (comments["albumartists"]
                 ?: comments["album_artists"] ?: comments["album artists"]
                     ?: comments["albumartist"])
@@ -360,6 +389,8 @@ private class TagWorkerImpl(
         first().replace(REPLAYGAIN_ADJUSTMENT_FILTER_REGEX, "").toFloatOrNull()?.nonZeroOrNull()
 
     private companion object {
+        val COVER_KEY_SAMPLE = 32
+
         val COMPILATION_ALBUM_ARTISTS = listOf("Various Artists")
         val COMPILATION_RELEASE_TYPES = listOf("compilation")
 

app/src/main/java/org/oxycblt/auxio/music/service/MediaItemBrowser.kt

@@ -19,6 +19,9 @@
 package org.oxycblt.auxio.music.service
 
 import android.content.Context
+import android.os.Bundle
+import androidx.annotation.StringRes
+import androidx.media.utils.MediaConstants
 import androidx.media3.common.MediaItem
 import androidx.media3.session.MediaSession.ControllerInfo
 import dagger.hilt.android.qualifiers.ApplicationContext
@@ -29,6 +32,7 @@ import kotlinx.coroutines.Deferred
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.async
+import org.oxycblt.auxio.R
 import org.oxycblt.auxio.list.ListSettings
 import org.oxycblt.auxio.list.sort.Sort
 import org.oxycblt.auxio.music.Album
@@ -57,8 +61,6 @@ constructor(
     private var invalidator: Invalidator? = null
 
     interface Invalidator {
-        data class ParentId(val id: String, val itemCount: Int)
-
         fun invalidate(ids: Map<String, Int>)
 
         fun invalidate(controller: ControllerInfo, query: String, itemCount: Int)
@@ -213,27 +215,41 @@ constructor(
         return when (val item = musicRepository.find(uid)) {
             is Album -> {
                 val songs = listSettings.albumSongSort.songs(item.songs)
-                songs.map { it.toMediaItem(context, item) }
+                songs.map { it.toMediaItem(context, item).withHeader(R.string.lbl_songs) }
             }
             is Artist -> {
                 val albums = ARTIST_ALBUMS_SORT.albums(item.explicitAlbums + item.implicitAlbums)
                 val songs = listSettings.artistSongSort.songs(item.songs)
-                albums.map { it.toMediaItem(context) } + songs.map { it.toMediaItem(context, item) }
+                albums.map { it.toMediaItem(context).withHeader(R.string.lbl_albums) } +
+                    songs.map { it.toMediaItem(context, item).withHeader(R.string.lbl_songs) }
             }
             is Genre -> {
                 val artists = GENRE_ARTISTS_SORT.artists(item.artists)
                 val songs = listSettings.genreSongSort.songs(item.songs)
-                artists.map { it.toMediaItem(context) } +
-                    songs.map { it.toMediaItem(context, null) }
+                artists.map { it.toMediaItem(context).withHeader(R.string.lbl_artists) } +
+                    songs.map { it.toMediaItem(context, null).withHeader(R.string.lbl_songs) }
             }
             is Playlist -> {
-                item.songs.map { it.toMediaItem(context, item) }
+                item.songs.map { it.toMediaItem(context, item).withHeader(R.string.lbl_songs) }
             }
             is Song,
             null -> return null
         }
     }
 
+    private fun MediaItem.withHeader(@StringRes res: Int): MediaItem {
+        val oldExtras = mediaMetadata.extras ?: Bundle()
+        val newExtras =
+            Bundle(oldExtras).apply {
+                putString(
+                    MediaConstants.DESCRIPTION_EXTRAS_KEY_CONTENT_STYLE_GROUP_TITLE,
+                    context.getString(res))
+            }
+        return buildUpon()
+            .setMediaMetadata(mediaMetadata.buildUpon().setExtras(newExtras).build())
+            .build()
+    }
+
     private fun getCategorySize(
         category: MediaSessionUID.Category,
         musicRepository: MusicRepository

app/src/main/java/org/oxycblt/auxio/music/service/MediaItemTranslation.kt

@@ -19,10 +19,15 @@
 package org.oxycblt.auxio.music.service
 
 import android.content.Context
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
 import android.os.Bundle
+import androidx.annotation.DrawableRes
 import androidx.annotation.StringRes
+import androidx.media.utils.MediaConstants
 import androidx.media3.common.MediaItem
 import androidx.media3.common.MediaMetadata
+import java.io.ByteArrayOutputStream
 import org.oxycblt.auxio.BuildConfig
 import org.oxycblt.auxio.R
 import org.oxycblt.auxio.music.Album
@@ -37,14 +42,27 @@ import org.oxycblt.auxio.music.resolveNames
 import org.oxycblt.auxio.util.getPlural
 
 fun MediaSessionUID.Category.toMediaItem(context: Context): MediaItem {
+    // TODO: Make custom overflow menu for compat
+    val style =
+        Bundle().apply {
+            putInt(
+                MediaConstants.DESCRIPTION_EXTRAS_KEY_CONTENT_STYLE_SINGLE_ITEM,
+                MediaConstants.DESCRIPTION_EXTRAS_VALUE_CONTENT_STYLE_CATEGORY_LIST_ITEM)
+        }
     val metadata =
         MediaMetadata.Builder()
             .setTitle(context.getString(nameRes))
             .setIsPlayable(false)
             .setIsBrowsable(true)
             .setMediaType(mediaType)
-            .build()
-    return MediaItem.Builder().setMediaId(toString()).setMediaMetadata(metadata).build()
+            .setExtras(style)
+    if (bitmapRes != null) {
+        val data = ByteArrayOutputStream()
+        BitmapFactory.decodeResource(context.resources, bitmapRes)
+            .compress(Bitmap.CompressFormat.PNG, 100, data)
+        metadata.setArtworkData(data.toByteArray(), MediaMetadata.PICTURE_TYPE_FILE_ICON)
+    }
+    return MediaItem.Builder().setMediaId(toString()).setMediaMetadata(metadata.build()).build()
 }
 
 fun Song.toMediaItem(context: Context, parent: MusicParent?): MediaItem {
@@ -103,7 +121,7 @@ fun Album.toMediaItem(context: Context): MediaItem {
             .setReleaseMonth(dates?.min?.month)
             .setReleaseDay(dates?.min?.day)
             .setMediaType(MediaMetadata.MEDIA_TYPE_ALBUM)
-            .setIsPlayable(true)
+            .setIsPlayable(false)
             .setIsBrowsable(true)
             .setArtworkUri(cover.single.mediaStoreCoverUri)
             .setExtras(Bundle().apply { putString("uid", mediaSessionUID.toString()) })
@@ -133,7 +151,7 @@ fun Artist.toMediaItem(context: Context): MediaItem {
                         context.getString(R.string.def_song_count)
                     }))
             .setMediaType(MediaMetadata.MEDIA_TYPE_ARTIST)
-            .setIsPlayable(true)
+            .setIsPlayable(false)
             .setIsBrowsable(true)
             .setGenre(genres.resolveNames(context))
             .setArtworkUri(cover.single.mediaStoreCoverUri)
@@ -157,7 +175,7 @@ fun Genre.toMediaItem(context: Context): MediaItem {
                     context.getString(R.string.def_song_count)
                 })
             .setMediaType(MediaMetadata.MEDIA_TYPE_GENRE)
-            .setIsPlayable(true)
+            .setIsPlayable(false)
             .setIsBrowsable(true)
             .setArtworkUri(cover.single.mediaStoreCoverUri)
             .setExtras(Bundle().apply { putString("uid", mediaSessionUID.toString()) })
@@ -180,7 +198,7 @@ fun Playlist.toMediaItem(context: Context): MediaItem {
                     context.getString(R.string.def_song_count)
                 })
             .setMediaType(MediaMetadata.MEDIA_TYPE_PLAYLIST)
-            .setIsPlayable(true)
+            .setIsPlayable(false)
             .setIsBrowsable(true)
             .setArtworkUri(cover?.single?.mediaStoreCoverUri)
             .setExtras(Bundle().apply { putString("uid", mediaSessionUID.toString()) })
@@ -205,14 +223,38 @@ fun MediaItem.toSong(deviceLibrary: DeviceLibrary): Song? {
 }
 
 sealed interface MediaSessionUID {
-    enum class Category(val id: String, @StringRes val nameRes: Int, val mediaType: Int?) :
-        MediaSessionUID {
-        ROOT("root", R.string.info_app_name, null),
-        SONGS("songs", R.string.lbl_songs, MediaMetadata.MEDIA_TYPE_MUSIC),
-        ALBUMS("albums", R.string.lbl_albums, MediaMetadata.MEDIA_TYPE_FOLDER_ALBUMS),
-        ARTISTS("artists", R.string.lbl_artists, MediaMetadata.MEDIA_TYPE_FOLDER_ARTISTS),
-        GENRES("genres", R.string.lbl_genres, MediaMetadata.MEDIA_TYPE_FOLDER_GENRES),
-        PLAYLISTS("playlists", R.string.lbl_playlists, MediaMetadata.MEDIA_TYPE_FOLDER_PLAYLISTS);
+    enum class Category(
+        val id: String,
+        @StringRes val nameRes: Int,
+        @DrawableRes val bitmapRes: Int?,
+        val mediaType: Int?
+    ) : MediaSessionUID {
+        ROOT("root", R.string.info_app_name, null, null),
+        SONGS(
+            "songs",
+            R.string.lbl_songs,
+            R.drawable.ic_song_bitmap_24,
+            MediaMetadata.MEDIA_TYPE_MUSIC),
+        ALBUMS(
+            "albums",
+            R.string.lbl_albums,
+            R.drawable.ic_album_bitmap_24,
+            MediaMetadata.MEDIA_TYPE_FOLDER_ALBUMS),
+        ARTISTS(
+            "artists",
+            R.string.lbl_artists,
+            R.drawable.ic_artist_bitmap_24,
+            MediaMetadata.MEDIA_TYPE_FOLDER_ARTISTS),
+        GENRES(
+            "genres",
+            R.string.lbl_genres,
+            R.drawable.ic_genre_bitmap_24,
+            MediaMetadata.MEDIA_TYPE_FOLDER_GENRES),
+        PLAYLISTS(
+            "playlists",
+            R.string.lbl_playlists,
+            R.drawable.ic_playlist_bitmap_24,
+            MediaMetadata.MEDIA_TYPE_FOLDER_PLAYLISTS);
 
         override fun toString() = "$ID_CATEGORY:$id"
 

app/src/main/java/org/oxycblt/auxio/playback/service/ExoPlaybackStateHolder.kt

@@ -270,8 +270,10 @@ class ExoPlaybackStateHolder(
     override fun prev() {
         if (playbackSettings.rewindWithPrev) {
             player.seekToPrevious()
-        } else {
+        } else if (player.hasPreviousMediaItem()) {
             player.seekToPreviousMediaItem()
+        } else {
+            player.seekTo(0)
         }
         if (!playbackSettings.rememberPause) {
             player.play()
@@ -365,17 +367,28 @@ class ExoPlaybackStateHolder(
         rawQueue: RawQueue,
         ack: StateAck.NewPlayback?
     ) {
-        this.parent = parent
-        player.setMediaItems(rawQueue.heap.map { it.toMediaItem(context, null) })
-        if (rawQueue.isShuffled) {
-            player.shuffleModeEnabled = true
-            player.setShuffleOrder(BetterShuffleOrder(rawQueue.shuffledMapping.toIntArray()))
-        } else {
-            player.shuffleModeEnabled = false
+        logD("Applying saved state")
+        var sendEvent = false
+        if (this.parent != parent) {
+            this.parent = parent
+            sendEvent = true
+        }
+        if (rawQueue != resolveQueue()) {
+            player.setMediaItems(rawQueue.heap.map { it.toMediaItem(context, null) })
+            if (rawQueue.isShuffled) {
+                player.shuffleModeEnabled = true
+                player.setShuffleOrder(BetterShuffleOrder(rawQueue.shuffledMapping.toIntArray()))
+            } else {
+                player.shuffleModeEnabled = false
+            }
+            player.seekTo(rawQueue.heapIndex, C.TIME_UNSET)
+            player.prepare()
+            player.pause()
+            sendEvent = true
+        }
+        if (sendEvent) {
+            ack?.let { playbackManager.ack(this, it) }
         }
-        player.seekTo(rawQueue.heapIndex, C.TIME_UNSET)
-        player.prepare()
-        ack?.let { playbackManager.ack(this, it) }
     }
 
     override fun endSession() {

app/src/main/java/org/oxycblt/auxio/playback/service/MediaSessionPlayer.kt

@@ -173,6 +173,15 @@ class MediaSessionPlayer(
         playbackManager.repeatMode(appRepeatMode)
     }
 
+    override fun seekToDefaultPosition(mediaItemIndex: Int) {
+        val indices = unscrambleQueueIndices()
+        val fakeIndex = indices.indexOf(mediaItemIndex)
+        if (fakeIndex < 0) {
+            return
+        }
+        playbackManager.goto(fakeIndex)
+    }
+
     override fun seekToNext() = playbackManager.next()
 
     override fun seekToNextMediaItem() = playbackManager.next()
@@ -183,18 +192,9 @@ class MediaSessionPlayer(
 
     override fun seekTo(positionMs: Long) = playbackManager.seekTo(positionMs)
 
-    override fun seekTo(mediaItemIndex: Int, positionMs: Long) {
-        val indices = unscrambleQueueIndices()
-        val fakeIndex = indices.indexOf(mediaItemIndex)
-        if (fakeIndex < 0) {
-            return
-        }
-        playbackManager.goto(fakeIndex)
-        if (positionMs == C.TIME_UNSET) {
-            return
-        }
-        playbackManager.seekTo(positionMs)
-    }
+    override fun seekTo(mediaItemIndex: Int, positionMs: Long) = notAllowed()
+
+    override fun seekToDefaultPosition() = notAllowed()
 
     override fun addMediaItems(index: Int, mediaItems: MutableList<MediaItem>) {
         val deviceLibrary = musicRepository.deviceLibrary ?: return
@@ -278,10 +278,6 @@ class MediaSessionPlayer(
 
     override fun setPlaybackSpeed(speed: Float) = notAllowed()
 
-    override fun seekToDefaultPosition() = notAllowed()
-
-    override fun seekToDefaultPosition(mediaItemIndex: Int) = notAllowed()
-
     override fun seekForward() = notAllowed()
 
     override fun seekBack() = notAllowed()

app/src/main/java/org/oxycblt/auxio/playback/service/MediaSessionServiceFragment.kt

@@ -129,7 +129,7 @@ constructor(
 
     fun release() {
         waitJob.cancel()
-        mediaSession.release()
+        mediaItemBrowser.release()
         actionHandler.release()
         exoHolder.release()
         playbackManager.removeListener(this)

app/src/main/java/org/oxycblt/auxio/playback/service/PlaybackActionHandler.kt

@@ -49,13 +49,15 @@ constructor(
     @ApplicationContext private val context: Context,
     private val playbackManager: PlaybackStateManager,
     private val playbackSettings: PlaybackSettings,
-    private val systemReceiver: SystemPlaybackReceiver
+    private val widgetComponent: WidgetComponent
 ) : PlaybackStateManager.Listener, PlaybackSettings.Listener {
 
     interface Callback {
         fun onCustomLayoutChanged(layout: List<CommandButton>)
     }
 
+    private val systemReceiver =
+        SystemPlaybackReceiver(playbackManager, playbackSettings, widgetComponent)
     private var callback: Callback? = null
 
     fun attach(callback: Callback) {
@@ -71,6 +73,7 @@ constructor(
         playbackManager.removeListener(this)
         playbackSettings.unregisterListener(this)
         context.unregisterReceiver(systemReceiver)
+        widgetComponent.release()
     }
 
     fun withCommands(commands: SessionCommands) =
@@ -180,12 +183,10 @@ object PlaybackActions {
  * A [BroadcastReceiver] for receiving playback-specific [Intent]s from the system that require an
  * active [IntentFilter] to be registered.
  */
-class SystemPlaybackReceiver
-@Inject
-constructor(
-    val playbackManager: PlaybackStateManager,
-    val playbackSettings: PlaybackSettings,
-    val widgetComponent: WidgetComponent
+class SystemPlaybackReceiver(
+    private val playbackManager: PlaybackStateManager,
+    private val playbackSettings: PlaybackSettings,
+    private val widgetComponent: WidgetComponent
 ) : BroadcastReceiver() {
     private var initialHeadsetPlugEventHandled = false
 

app/src/main/java/org/oxycblt/auxio/playback/state/PlaybackCommand.kt

@@ -91,7 +91,8 @@ constructor(
         override val shuffled: Boolean
     ) : PlaybackCommand
 
-    override fun song(song: Song, shuffle: ShuffleMode) = newCommand(song, shuffle)
+    override fun song(song: Song, shuffle: ShuffleMode) =
+        newCommand(song, null, listOf(song), shuffle)
 
     override fun songFromAll(song: Song, shuffle: ShuffleMode) = newCommand(song, shuffle)
 
@@ -105,7 +106,7 @@ constructor(
         newCommand(song, genre, song.genres, listSettings.genreSongSort, shuffle)
 
     override fun songFromPlaylist(song: Song, playlist: Playlist, shuffle: ShuffleMode) =
-        newCommand(song, playlist, playlist.songs, listSettings.playlistSort, shuffle)
+        newCommand(song, playlist, playlist.songs, shuffle)
 
     override fun all(shuffle: ShuffleMode) = newCommand(null, shuffle)
 

app/src/main/java/org/oxycblt/auxio/playback/state/PlaybackStateManager.kt

@@ -795,15 +795,8 @@ class PlaybackStateManagerImpl @Inject constructor() : PlaybackStateManager {
                         index
                     })
 
-        // Valid state where something needs to be played, direct the stateholder to apply
-        // this new state.
-        val oldStateMirror = stateMirror
-        if (oldStateMirror.rawQueue != rawQueue) {
-            logD("Queue changed, must reload player")
-            stateHolder.playing(false)
-            stateHolder.applySavedState(parent, rawQueue, StateAck.NewPlayback)
-            stateHolder.seekTo(savedState.positionMs)
-        }
+        stateHolder.applySavedState(savedState.parent, rawQueue, StateAck.NewPlayback)
+        stateHolder.seekTo(savedState.positionMs)
         stateHolder.repeatMode(savedState.repeatMode)
 
         isInitialized = true

app/src/main/java/org/oxycblt/auxio/util/StateUtil.kt

@@ -32,6 +32,7 @@ import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withTimeout
+import org.oxycblt.auxio.BuildConfig
 
 /**
  * A wrapper around [StateFlow] exposing a one-time consumable event.
@@ -166,7 +167,13 @@ suspend fun <E> SendChannel<E>.sendWithTimeout(element: E, timeout: Long = DEFAU
     try {
         withTimeout(timeout) { send(element) }
     } catch (e: TimeoutCancellationException) {
-        throw TimeoutException("Timed out sending element $element to channel: $e")
+        logE("Failed to send element to channel $e in ${timeout}ms.")
+        if (BuildConfig.DEBUG) {
+            throw TimeoutException("Timed out sending element to channel: $e")
+        } else {
+            logE(e.stackTraceToString())
+            send(element)
+        }
     }
 }
 
@@ -203,7 +210,13 @@ suspend fun <E> ReceiveChannel<E>.forEachWithTimeout(
                 subsequent = true
             }
         } catch (e: TimeoutCancellationException) {
-            throw TimeoutException("Timed out receiving element from channel: $e")
+            logE("Failed to send element to channel $e in ${timeout}ms.")
+            if (BuildConfig.DEBUG) {
+                throw TimeoutException("Timed out sending element to channel: $e")
+            } else {
+                logE(e.stackTraceToString())
+                handler()
+            }
         }
     }
 }