fix(cast): handle end events

android/build.gradle

@@ -5,7 +5,7 @@ buildscript {
   }
 
   dependencies {
-    classpath "com.android.tools.build:gradle:8.8.0"
+    classpath "com.android.tools.build:gradle:9.2.1"
   }
 }
 
@@ -143,16 +143,15 @@ dependencies {
   // Add a dependency on NitroModules
   implementation project(":react-native-nitro-modules")
 
-  implementation("org.videolan.android:libvlc-all:4.0.0-eap24")
+  implementation("org.videolan.android:libvlc-all:4.0.0-eap29")
-  implementation("androidx.media3:media3-common:1.4.1")
+  implementation("androidx.media3:media3-common:1.11.0")
-  implementation("androidx.media3:media3-session:1.4.1")
+  implementation("androidx.media3:media3-session:1.11.0")
-  implementation("androidx.media3:media3-ui:1.4.1")
+  implementation("androidx.media3:media3-ui:1.11.0")
-  implementation 'androidx.media3:media3-exoplayer:1.10.0'
+  implementation 'androidx.media3:media3-exoplayer:1.11.0'
-  implementation("androidx.media3:media3-exoplayer-hls:1.10.0")
+  implementation("androidx.media3:media3-exoplayer-hls:1.11.0")
-
+  implementation("androidx.media3:media3-cast:1.11.0")
-  implementation("androidx.media3:media3-cast:1.10.0")
   implementation("com.google.android.gms:play-services-cast-framework:22.3.1")
-  implementation("androidx.mediarouter:mediarouter:1.7.0")
+  implementation("androidx.mediarouter:mediarouter:1.8.1")
 }
 
 if (isNewArchitectureEnabled()) {

android/src/main/java/dev/zoriya/omni/EventMap.kt

@@ -5,12 +5,9 @@ import androidx.media3.common.C
 import androidx.media3.common.C.TRACK_TYPE_AUDIO
 import androidx.media3.common.C.TRACK_TYPE_TEXT
 import androidx.media3.common.C.TRACK_TYPE_VIDEO
-import androidx.media3.common.MediaItem
 import androidx.media3.common.PlaybackException
 import androidx.media3.common.PlaybackParameters
 import androidx.media3.common.Player
-import androidx.media3.common.Player.MEDIA_ITEM_TRANSITION_REASON_AUTO
-import androidx.media3.common.Player.MEDIA_ITEM_TRANSITION_REASON_SEEK
 import androidx.media3.common.Player.STATE_BUFFERING
 import androidx.media3.common.Player.STATE_ENDED
 import androidx.media3.common.Player.STATE_IDLE
@@ -18,6 +15,8 @@ import androidx.media3.common.Player.STATE_READY
 import androidx.media3.common.Timeline
 import androidx.media3.common.Tracks
 import androidx.media3.common.VideoSize
+import com.google.android.gms.cast.MediaStatus
+import com.google.android.gms.cast.framework.media.RemoteMediaClient
 import com.margelo.nitro.omni.BoolProperty
 import com.margelo.nitro.omni.CastStatus
 import com.margelo.nitro.omni.HybridOmniEventMapSpec
@@ -59,7 +58,6 @@ class EventMap(private val tracks: TrackProvider) : HybridOmniEventMapSpec(), Pl
     private val castStatusListeners = mutableSetOf<(CastStatus) -> Unit>()
     private val sourceListeners = mutableSetOf<(Source?) -> Unit>()
 
-    private var lastMediaItemIndex = 0
     private var lastRendition: Rendition? = null
     private var lastRenditions: Array<Rendition>? = null
     private var lastIsAutoQuality: Boolean? = null
@@ -73,7 +71,6 @@ class EventMap(private val tracks: TrackProvider) : HybridOmniEventMapSpec(), Pl
             _player?.removeListener(this)
             _player = value
             value.addListener(this)
-            lastMediaItemIndex = value.currentMediaItemIndex
             lastRendition = null
             lastRenditions = null
             lastIsAutoQuality = null
@@ -108,6 +105,8 @@ class EventMap(private val tracks: TrackProvider) : HybridOmniEventMapSpec(), Pl
             onTracksChanged(value.currentTracks)
         }
 
+    var remote: RemoteMediaClient? = null
+
     fun emitCastStatus(status: CastStatus) {
         castStatusListeners.forEach { it(status) }
     }
@@ -116,6 +115,14 @@ class EventMap(private val tracks: TrackProvider) : HybridOmniEventMapSpec(), Pl
         sourceListeners.forEach { it(source) }
     }
 
+    fun emitPrev() {
+        onPrevListeners.forEach { it() }
+    }
+
+    fun emitNext() {
+        onNextListeners.forEach { it() }
+    }
+
     private fun selectedTrack(trackType: Int): Track? {
         val list = when (trackType) {
             TRACK_TYPE_VIDEO -> tracks.videos
@@ -197,7 +204,13 @@ class EventMap(private val tracks: TrackProvider) : HybridOmniEventMapSpec(), Pl
 
     override fun onPlaybackStateChanged(playbackState: Int) {
         val state = when (player.playbackState) {
-            STATE_IDLE -> PlayerStatus.IDLE
+            STATE_IDLE -> {
+                // cast doesn't have STATE_ENDED, so handle this manually
+                if (remote?.mediaStatus?.idleReason == MediaStatus.IDLE_REASON_FINISHED)
+                    onEndListeners.forEach { it() }
+                PlayerStatus.IDLE
+            }
+
             STATE_BUFFERING -> PlayerStatus.LOADING
             STATE_READY -> PlayerStatus.READYTOPLAY
             STATE_ENDED -> {
@@ -278,20 +291,6 @@ class EventMap(private val tracks: TrackProvider) : HybridOmniEventMapSpec(), Pl
         playerStatusListeners.forEach { it(PlayerStatus.ERROR) }
     }
 
-    override fun onMediaItemTransition(mediaItem: MediaItem?, reason: Int) {
-        if (reason != MEDIA_ITEM_TRANSITION_REASON_AUTO && reason != MEDIA_ITEM_TRANSITION_REASON_SEEK) {
-            lastMediaItemIndex = player.currentMediaItemIndex
-            return
-        }
-        val newIndex = player.currentMediaItemIndex
-        if (newIndex < lastMediaItemIndex) {
-            onPrevListeners.forEach { it() }
-        } else if (newIndex > lastMediaItemIndex) {
-            onNextListeners.forEach { it() }
-        }
-        lastMediaItemIndex = newIndex
-    }
-
     override fun onPositionDiscontinuity(
         oldPosition: Player.PositionInfo,
         newPosition: Player.PositionInfo,

android/src/main/java/dev/zoriya/omni/NavigationPlayer.kt

@@ -0,0 +1,51 @@
+package dev.zoriya.omni
+
+import androidx.annotation.OptIn
+import androidx.media3.common.ForwardingSimpleBasePlayer
+import androidx.media3.common.Player
+import androidx.media3.common.util.UnstableApi
+import com.google.common.util.concurrent.Futures
+import com.google.common.util.concurrent.ListenableFuture
+
+@OptIn(UnstableApi::class)
+class NavigationPlayer(
+    player: Player,
+    private val hasPrev: () -> Boolean,
+    private val hasNext: () -> Boolean,
+    private val onPrev: () -> Unit,
+    private val onNext: () -> Unit,
+) : ForwardingSimpleBasePlayer(player) {
+    override fun getState(): State {
+        val state = super.getState()
+        return state.buildUpon()
+            .setAvailableCommands(
+                state.availableCommands.buildUpon()
+                    .addIf(Player.COMMAND_SEEK_TO_PREVIOUS, hasPrev())
+                    .addIf(Player.COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM, hasPrev())
+                    .addIf(Player.COMMAND_SEEK_TO_NEXT, hasNext())
+                    .addIf(Player.COMMAND_SEEK_TO_NEXT_MEDIA_ITEM, hasNext())
+                    .build()
+            )
+            .build()
+    }
+
+    override fun handleSeek(
+        mediaItemIndex: Int,
+        positionMs: Long,
+        seekCommand: Int,
+    ): ListenableFuture<*> = when (seekCommand) {
+        Player.COMMAND_SEEK_TO_PREVIOUS,
+        Player.COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM -> {
+            onPrev()
+            Futures.immediateVoidFuture()
+        }
+
+        Player.COMMAND_SEEK_TO_NEXT,
+        Player.COMMAND_SEEK_TO_NEXT_MEDIA_ITEM -> {
+            onNext()
+            Futures.immediateVoidFuture()
+        }
+
+        else -> super.handleSeek(mediaItemIndex, positionMs, seekCommand)
+    }
+}

android/src/main/java/dev/zoriya/omni/OmniCastOptionsProvider.kt

@@ -3,6 +3,7 @@ package dev.zoriya.omni
 import android.content.Context
 import com.google.android.gms.cast.CastMediaControlIntent
 import com.google.android.gms.cast.framework.CastOptions
+import com.google.android.gms.cast.framework.media.CastMediaOptions
 import com.google.android.gms.cast.framework.OptionsProvider
 import com.google.android.gms.cast.framework.SessionProvider
 
@@ -11,9 +12,15 @@ class OmniCastOptionsProvider : OptionsProvider {
         val appId = OmniPlayer.receiverApplicationId
             ?: CastMediaControlIntent.DEFAULT_MEDIA_RECEIVER_APPLICATION_ID
 
+        val mediaOptions = CastMediaOptions.Builder()
+            .setMediaSessionEnabled(false)
+            .setNotificationOptions(null)
+            .build()
+
         return CastOptions.Builder()
             .setReceiverApplicationId(appId)
             .setShowSystemOutputSwitcherOnCastIconClick(true)
+            .setCastMediaOptions(mediaOptions)
             .build()
     }
 

android/src/main/java/dev/zoriya/omni/OmniCastTrackSelector.kt

@@ -60,13 +60,18 @@ class OmniCastTrackSelector : CastTrackSelector() {
         val overrideMatch = indices.firstOrNull { i ->
             overrides.keys.any { it.id == groups[i].id }
         }
-        val match = indices.firstOrNull { i ->
+        val matchesLabel = { i: Int ->
             val name: String? = tracks[i].name
-            val language: String? = tracks[i].language
+            labels.isNotEmpty() && name != null && name in labels
-            (labels.isNotEmpty() && name != null && name in labels) ||
-                (languages.isNotEmpty() && language != null &&
-                    Util.normalizeLanguageCode(language) in languages)
         }
+        val matchesLanguage = { i: Int ->
+            val language: String? = tracks[i].language
+            languages.isNotEmpty() && language != null &&
+                Util.normalizeLanguageCode(language) in languages
+        }
+        val match = indices.firstOrNull { matchesLabel(it) && matchesLanguage(it) }
+            ?: indices.firstOrNull { matchesLabel(it) }
+            ?: indices.firstOrNull { matchesLanguage(it) }
         val chosen = when {
             overrideMatch != null -> overrideMatch
             match != null -> match

android/src/main/java/dev/zoriya/omni/OmniMediaItemConverter.kt

@@ -24,8 +24,15 @@ class OmniMediaItemConverter : MediaItemConverter {
             builder.setMediaMetadata(
                 androidx.media3.common.MediaMetadata.Builder()
                     .setTitle(md.getString(CastMediaMetadata.KEY_TITLE))
-                    .setArtist(md.getString(CastMediaMetadata.KEY_ARTIST))
+                    .setArtist(
-                    .setAlbumTitle(md.getString(CastMediaMetadata.KEY_ALBUM_TITLE))
+                        md.getString(CastMediaMetadata.KEY_ARTIST)
+                            ?: md.getString(CastMediaMetadata.KEY_SUBTITLE)
+                    )
+                    .setAlbumTitle(
+                        md.getString(CastMediaMetadata.KEY_ALBUM_TITLE)
+                            ?: md.getString(CastMediaMetadata.KEY_STUDIO)
+                    )
+                    .setArtworkUri(md.images.firstOrNull()?.url)
                     .build()
             )
         }

android/src/main/java/dev/zoriya/omni/OmniPlayer.kt

@@ -1,6 +1,8 @@
 package dev.zoriya.omni
 
 import android.annotation.SuppressLint
+import android.content.Context
+import android.os.Looper
 import android.app.Notification
 import android.app.NotificationChannel
 import android.app.NotificationManager
@@ -13,20 +15,27 @@ import androidx.media3.common.AudioAttributes
 import androidx.media3.common.C
 import androidx.media3.common.MediaItem
 import androidx.media3.common.MediaMetadata
+import androidx.media3.common.MimeTypes
 import androidx.media3.common.Player
 import androidx.media3.datasource.DefaultDataSource
 import androidx.media3.datasource.DefaultHttpDataSource
+import androidx.media3.exoplayer.DefaultRenderersFactory
 import androidx.media3.exoplayer.ExoPlayer
+import androidx.media3.exoplayer.Renderer
 import androidx.media3.exoplayer.source.DefaultMediaSourceFactory
+import androidx.media3.exoplayer.text.TextOutput
+import androidx.media3.exoplayer.text.TextRenderer
 import com.margelo.nitro.NitroModules
 import com.margelo.nitro.omni.AndroidBackend
 import com.margelo.nitro.omni.CastStatus
 import com.margelo.nitro.omni.HybridOmniPlayerSpec
+import com.margelo.nitro.omni.Metadata
 import com.margelo.nitro.omni.MixAudioMode
 import com.margelo.nitro.omni.PlayerStatus
 import com.margelo.nitro.omni.Rendition
 import com.margelo.nitro.omni.Source
 import com.margelo.nitro.omni.Track
+import com.margelo.nitro.omni.VideoSrc
 import androidx.core.net.toUri
 import androidx.media3.common.MediaItem.RequestMetadata
 import androidx.media3.common.MediaItem.SubtitleConfiguration
@@ -38,6 +47,7 @@ import androidx.media3.session.MediaSession
 import androidx.media3.session.MediaSessionService
 import androidx.mediarouter.app.MediaRouteChooserDialog
 import androidx.mediarouter.app.SystemOutputSwitcherDialogController
+import com.google.android.gms.cast.MediaStatus
 import com.google.android.gms.cast.framework.CastContext
 import com.google.android.gms.cast.framework.CastState
 import com.google.android.gms.cast.framework.CastStateListener
@@ -62,9 +72,26 @@ class OmniPlayer(
             AndroidBackend.EXOPLAYER -> {
                 val http = DefaultHttpDataSource.Factory().setAllowCrossProtocolRedirects(true)
                 httpDataSourceFactory = http
-                ExoPlayer.Builder(ctx)
+                // karaoke subs make exoplayer crash without this...
+                val renderersFactory = object : DefaultRenderersFactory(ctx) {
+                    override fun buildTextRenderers(
+                        context: Context,
+                        output: TextOutput,
+                        outputLooper: Looper,
+                        extensionRendererMode: Int,
+                        out: ArrayList<Renderer>,
+                    ) {
+                        out.add(
+                            TextRenderer(output, outputLooper).apply {
+                                experimentalSetLegacyDecodingEnabled(true)
+                            }
+                        )
+                    }
+                }
+                ExoPlayer.Builder(ctx, renderersFactory)
                     .setMediaSourceFactory(
                         DefaultMediaSourceFactory(DefaultDataSource.Factory(ctx, http))
+                            .experimentalParseSubtitlesDuringExtraction(false)
                     )
                     .build()
             }
@@ -75,8 +102,29 @@ class OmniPlayer(
     override val eventMap = EventMap(this)
 
     private var castContext: CastContext? = null
-    private val castStateListener =
+    private val castStateListener = CastStateListener {
-        CastStateListener { eventMap.emitCastStatus(computeCastStatus()) }
+        eventMap.emitCastStatus(computeCastStatus())
+        listenToReceiver()
+    }
+
+    // receivers have no queue to skip in (a queue would make them play things on
+    // their own), so they ask us to do it when something else - google home, the
+    // assistant, ... - requests a prev/next. same path as our own buttons.
+    private fun listenToReceiver() {
+        val session = castContext?.sessionManager?.currentCastSession
+        eventMap.remote = session?.remoteMediaClient
+        if (session == null) return
+        try {
+            session.setMessageReceivedCallbacks(OMNI_NAMESPACE) { _, _, message ->
+                when (JSONObject(message).optString("action")) {
+                    "prev" -> runOnMainThread { eventMap.emitPrev() }
+                    "next" -> runOnMainThread { eventMap.emitNext() }
+                }
+            }
+        } catch (e: Throwable) {
+            android.util.Log.w("OmniPlayer", "could not listen to the receiver", e)
+        }
+    }
 
     val player: Player = runOnMainThreadSync {
         castOptions?.receiverApplicationId?.let { receiverApplicationId = it }
@@ -100,7 +148,13 @@ class OmniPlayer(
                 .setRemotePlayer(remote)
                 .build()
         }
-        active
+        NavigationPlayer(
+            active,
+            hasPrev = { source?.metadata?.hasPrev == true },
+            hasNext = { source?.metadata?.hasNext == true },
+            onPrev = { eventMap.emitPrev() },
+            onNext = { eventMap.emitNext() },
+        )
     }
 
     override var showNotification: Boolean? = false
@@ -116,19 +170,19 @@ class OmniPlayer(
         when {
             shouldShow && !serviceRunning -> {
                 val otherIsPlaying = notificationPlayer?.let { other ->
-                    other !== localPlayer && runOnMainThreadSync { other.isPlaying }
+                    other !== player && runOnMainThreadSync { other.isPlaying }
                 } == true
                 if (otherIsPlaying) {
                     throw Error("Two players can't display notifications at the same time.")
                 }
-                notificationPlayer = localPlayer
+                notificationPlayer = player
                 ctx.startForegroundService(Intent(ctx, OmniPlayerService::class.java))
                 serviceRunning = true
             }
 
             !shouldShow && serviceRunning -> {
                 ctx.stopService(Intent(ctx, OmniPlayerService::class.java))
-                if (notificationPlayer == localPlayer) notificationPlayer = null
+                if (notificationPlayer == player) notificationPlayer = null
                 serviceRunning = false
             }
         }
@@ -187,6 +241,19 @@ class OmniPlayer(
         super.dispose()
     }
 
+    private fun inferSubtitleMimeType(link: String): String? {
+        val ext = link.toUri().lastPathSegment?.substringAfterLast('.', "")?.lowercase()
+        return when (ext) {
+            "vtt", "webvtt" -> MimeTypes.TEXT_VTT
+            "srt" -> MimeTypes.APPLICATION_SUBRIP
+            "ass", "ssa" -> MimeTypes.TEXT_SSA
+            "ttml", "dfxp", "xml" -> MimeTypes.APPLICATION_TTML
+            "sup" -> MimeTypes.APPLICATION_PGS
+            "sub" -> MimeTypes.APPLICATION_VOBSUB
+            else -> null
+        }
+    }
+
     private fun buildMediaItem(
         src: com.margelo.nitro.omni.VideoSrc,
         metadata: com.margelo.nitro.omni.Metadata?,
@@ -212,7 +279,10 @@ class OmniPlayer(
                     .setId(subtitle.id)
                     .setLanguage(subtitle.language)
                     .setLabel(subtitle.label)
-                    .setMimeType(subtitle.mimeType)
+                    // exoplayer requires a mime type to pick a subtitle parser.
+                    // fall back to inferring it from the link's extension so
+                    // consumers don't have to provide one.
+                    .setMimeType(subtitle.mimeType ?: inferSubtitleMimeType(subtitle.link))
                     .build()
             })
             .setRequestMetadata(
@@ -233,6 +303,33 @@ class OmniPlayer(
             .build()
     }
 
+    private fun sourceOf(item: MediaItem): Source {
+        val meta = item.mediaMetadata
+        val status = castContext?.sessionManager?.currentCastSession
+            ?.remoteMediaClient?.mediaStatus
+        return Source(
+            src = VideoSrc(
+                uri = item.localConfiguration?.uri?.toString() ?: item.mediaId,
+                mimeType = item.localConfiguration?.mimeType,
+                headers = emptyMap(),
+            ),
+            startTime = null,
+            subtitles = emptyArray(),
+            fonts = null,
+            metadata = Metadata(
+                title = meta.title?.toString() ?: "",
+                album = meta.albumTitle?.toString(),
+                artist = meta.artist?.toString(),
+                imageLink = meta.artworkUri?.toString(),
+                hasPrev = status?.isMediaCommandSupported(MediaStatus.COMMAND_QUEUE_PREVIOUS),
+                hasNext = status?.isMediaCommandSupported(MediaStatus.COMMAND_QUEUE_NEXT),
+            ),
+            mixAudio = null,
+            castId = item.mediaId,
+            castData = null,
+        )
+    }
+
     fun setVideoView(surfaceView: android.view.SurfaceView) {
         runOnMainThread {
             localPlayer.setVideoSurfaceView(surfaceView)
@@ -258,8 +355,8 @@ class OmniPlayer(
         }
     }
 
-    override val hasPrev: Boolean get() = player.hasPreviousMediaItem()
+    override val hasPrev: Boolean get() = source?.metadata?.hasPrev == true
-    override val hasNext: Boolean get() = player.hasNextMediaItem()
+    override val hasNext: Boolean get() = source?.metadata?.hasNext == true
     override val status by mainThreadProperty {
         when (player.playbackState) {
             Player.STATE_IDLE,
@@ -343,15 +440,39 @@ class OmniPlayer(
         }
     }
 
+
     init {
-        runOnMainThreadSync { eventMap.player = player }
+        runOnMainThreadSync {
+            eventMap.player = player
+            player.addListener(object : Player.Listener {
+                override fun onMediaItemTransition(item: MediaItem?, reason: Int) = followMedia(item)
+            })
+        }
     }
 
-    override var source: Source? = null
+    private fun followMedia(item: MediaItem?) {
+        // our media only leaves the player while it is being handed over to the
+        // receiver (starting a cast), it is not gone.
+        if (item == null && ownItem != null) return
+        if (item != null && item == ownItem) return
+        val source = item?.let { sourceOf(it) }
+        if (source == _source) return
+        _source = source
+        eventMap.emitSource(source)
+        syncNotificationService()
+    }
+
+    private var _source: Source? = null
+    private var ownItem: MediaItem? = null
+
+
+    override var source: Source?
+        get() = _source
         set(value) {
-            field = value
+            _source = value
             eventMap.emitSource(value)
             if (value == null) {
+                ownItem = null
                 runOnMainThreadSync {
                     player.clearMediaItems()
                 }
@@ -377,15 +498,11 @@ class OmniPlayer(
                 value.castId,
                 value.castData,
             )
-            val mediaItems = mutableListOf<MediaItem>()
+            ownItem = currentItem
-            if (value.metadata?.hasPrev == true) mediaItems.add(currentItem)
-            mediaItems.add(currentItem)
-            if (value.metadata?.hasNext == true) mediaItems.add(currentItem)
 
             runOnMainThreadSync {
-                val startIndex = if (value.metadata?.hasPrev == true) 1 else 0
                 val startPositionMs = ((value.startTime ?: 0.0).coerceAtLeast(0.0)) * 1000.0
-                player.setMediaItems(mediaItems, startIndex, startPositionMs.toLong())
+                player.setMediaItems(listOf(currentItem), 0, startPositionMs.toLong())
                 player.prepare()
             }
             syncNotificationService()
@@ -407,11 +524,11 @@ class OmniPlayer(
     }
 
     override fun playPrev() {
-        runOnMainThreadSync { player.seekToPreviousMediaItem() }
+        runOnMainThreadSync { eventMap.emitPrev() }
     }
 
     override fun playNext() {
-        runOnMainThreadSync { player.seekToNextMediaItem() }
+        runOnMainThreadSync { eventMap.emitNext() }
     }
 
     override fun selectVideo(video: Track) {
@@ -441,15 +558,15 @@ class OmniPlayer(
                 }?.mediaTrackGroup
                 if (group != null) {
                     params.setOverrideForType(TrackSelectionOverride(group, 0))
+                }
+                // also set preferred flags for cast selection
+                val labels = track.label?.let { arrayOf(it) } ?: emptyArray()
+                if (type == C.TRACK_TYPE_AUDIO) {
+                    params.setPreferredAudioLanguage(track.language)
+                        .setPreferredAudioLabels(*labels)
                 } else {
-                    val labels = track.label?.let { arrayOf(it) } ?: emptyArray()
+                    params.setPreferredTextLanguage(track.language)
-                    if (type == C.TRACK_TYPE_AUDIO) {
+                        .setPreferredTextLabels(*labels)
-                        params.setPreferredAudioLanguage(track.language)
-                            .setPreferredAudioLabels(*labels)
-                    } else {
-                        params.setPreferredTextLanguage(track.language)
-                            .setPreferredTextLabels(*labels)
-                    }
                 }
             }
             player.trackSelectionParameters = params.build()
@@ -523,6 +640,10 @@ class OmniPlayer(
         const val CAST_ID_EXTRA = "dev.zoriya.omni.castId"
         const val CAST_DATA_EXTRA = "dev.zoriya.omni.castData"
 
+        // channel a receiver uses to ask us to play the prev/next media.
+        // it must declare it too (`customNamespaces` in the caf options).
+        const val OMNI_NAMESPACE = "urn:x-cast:dev.zoriya.omni"
+
         // Receiver application id passed at runtime via OmniProvider's `cast`
         // prop; read by OmniCastOptionsProvider when the Cast SDK initializes.
         var receiverApplicationId: String? = null

android/src/main/java/dev/zoriya/omni/OmniView.kt

@@ -244,6 +244,7 @@ class OmniView(val context: ThemedReactContext) :
     }
 
     override fun onIsPlayingChanged(isPlaying: Boolean) {
+        if (isPlaying) scheduleVideoRebuild()
         updatePictureInPictureParams()
     }
 
@@ -377,22 +378,16 @@ class OmniView(val context: ThemedReactContext) :
         movedSurfaceToRootForPip = false
     }
 
-    // A surface that is destroyed and recreated while playback runs (the PIP
+    private val rebuildRunnable = Runnable { boundPlayer?.rebuildVideoOutput() }
-    // reparent) makes VLC drop its video pipeline; it won't rebuild it for the
+
-    // new surface on its own, so we must ask it to. The rebuild only succeeds
+    private fun scheduleVideoRebuild() {
-    // once the (PIP) window has settled at its final size — firing it mid-resize
+        surfaceView.removeCallbacks(rebuildRunnable)
-    // leaves the vout stopped — so it is debounced off surfaceChanged.
+        surfaceView.postDelayed(rebuildRunnable, 200)
-    private var pendingVideoRebuild = false
-    private val rebuildRunnable = Runnable {
-        if (!pendingVideoRebuild) return@Runnable
-        pendingVideoRebuild = false
-        boundPlayer?.rebuildVideoOutput()
     }
 
     override fun surfaceCreated(holder: SurfaceHolder) {
         surfaceReady = true
         boundPlayer?.setVideoView(surfaceView)
-        if (boundPlayer?.localPlayer?.isPlaying == true) pendingVideoRebuild = true
         updatePictureInPictureParams()
     }
 
@@ -403,10 +398,7 @@ class OmniView(val context: ThemedReactContext) :
         height: Int
     ) {
         boundPlayer?.updateVideoLayout(width, height)
-        if (pendingVideoRebuild) {
+        scheduleVideoRebuild()
-            surfaceView.removeCallbacks(rebuildRunnable)
-            surfaceView.postDelayed(rebuildRunnable, 200)
-        }
     }
 
     override fun surfaceDestroyed(holder: SurfaceHolder) {

android/src/main/java/dev/zoriya/omni/VlcPlayer.kt

@@ -46,6 +46,7 @@ import org.videolan.libvlc.MediaPlayer
 import org.videolan.libvlc.interfaces.IMedia
 import org.videolan.libvlc.interfaces.IMedia.VideoTrack
 import org.videolan.libvlc.interfaces.IVLCVout
+import java.security.MessageDigest
 
 @SuppressLint("UnsafeOptInUsageError")
 class VlcPlayer(ctx: Context) :
@@ -82,13 +83,15 @@ class VlcPlayer(ctx: Context) :
         if (Looper.myLooper() == Looper.getMainLooper()) flush() else applicationHandler.post(flush)
     }
 
-    private val libVLC = LibVLC(ctx, arrayListOf(
+    private val libVLC = LibVLC(
-        "--network-caching=1500",
+        ctx, arrayListOf(
-        "--file-caching=1500",
+            "--network-caching=1500",
-        "--no-stats",
+            "--file-caching=1500",
-        "--no-osd",
+            "--no-stats",
-        "--quiet"
+            "--no-osd",
-    ))
+            "--quiet"
+        )
+    )
 
     private val player = MediaPlayer(libVLC)
 
@@ -97,15 +100,28 @@ class VlcPlayer(ctx: Context) :
     private var mediaItems: List<MediaItem> = emptyList()
     private var currentMediaItemIndex: Int = INDEX_UNSET
     private var currentTrackSelectionParameters = TrackSelectionParameters.Builder().build()
+
     @Volatile
     private var playerError: PlaybackException? = null
+
     @Volatile
     private var released = false
     private var playlistMetadata: MediaMetadata = MediaMetadata.EMPTY
     private var userInitiatedTransition: Boolean = false
+
     @Volatile
     private var cachedBufferedPosition: Long = 0L
+
+    // vlc handles seeks on its input thread and keeps reporting the pre-seek time
+    // until it decoded the new position, so remember where we asked to go and
+    // report that instead
+    @Volatile
+    private var pendingSeekPosition: Long = TIME_UNSET
+
+    @Volatile
+    private var seekOriginPosition: Long = 0L
     private var boundSurfaceView: SurfaceView? = null
+    private var videoOutputStale = false
     private var lastVideoSize: VideoSize = VideoSize.UNKNOWN
 
     private val availableCommands: Player.Commands = Player.Commands.Builder()
@@ -176,6 +192,7 @@ class VlcPlayer(ctx: Context) :
 
             MediaPlayer.Event.Stopped -> {
                 abandonAudioFocus()
+                pendingSeekPosition = TIME_UNSET
                 notifyListeners(EVENT_PLAYBACK_STATE_CHANGED) {
                     it.onPlaybackStateChanged(STATE_IDLE)
                 }
@@ -183,6 +200,7 @@ class VlcPlayer(ctx: Context) :
 
             MediaPlayer.Event.EndReached -> {
                 abandonAudioFocus()
+                pendingSeekPosition = TIME_UNSET
                 notifyListeners(EVENT_PLAYBACK_STATE_CHANGED) {
                     it.onPlaybackStateChanged(STATE_ENDED)
                 }
@@ -214,7 +232,14 @@ class VlcPlayer(ctx: Context) :
 
             // progress is polled instead of pushed dozens of times per seconds.
             // this improves perf & battery life (native -> js bridge is expensive)
-            MediaPlayer.Event.TimeChanged -> Unit
+            MediaPlayer.Event.TimeChanged -> {
+                val pending = pendingSeekPosition
+                if (pending != TIME_UNSET &&
+                    (Math.abs(event.timeChanged - seekOriginPosition) > 1_000 || Math.abs(event.timeChanged - pending) < 1_000)
+                ) {
+                    pendingSeekPosition = TIME_UNSET
+                }
+            }
 
             // vlc has no video-size event, Vout event still has unknown size.
             // This is the first callback with known size.
@@ -292,7 +317,11 @@ class VlcPlayer(ctx: Context) :
             audioManager.requestAudioFocus(request)
         } else {
             @Suppress("DEPRECATION")
-            audioManager.requestAudioFocus(this, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN)
+            audioManager.requestAudioFocus(
+                this,
+                AudioManager.STREAM_MUSIC,
+                AudioManager.AUDIOFOCUS_GAIN
+            )
         }
         hasAudioFocus = result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED
         return hasAudioFocus
@@ -345,8 +374,10 @@ class VlcPlayer(ctx: Context) :
         currentMediaItemIndex = targetIndex
         playlistMetadata = mediaItems.getOrNull(targetIndex)?.mediaMetadata ?: MediaMetadata.EMPTY
         playerError = null
+        pendingSeekPosition = TIME_UNSET
 
         player.stop()
+        videoOutputStale = false
 
         mediaItems.getOrNull(targetIndex)?.let { item ->
             val uri = item.localConfiguration?.uri?.toString()
@@ -375,7 +406,8 @@ class VlcPlayer(ctx: Context) :
             EVENT_PLAYLIST_METADATA_CHANGED
         )
         if (prev != currentMediaItemIndex) events += EVENT_MEDIA_ITEM_TRANSITION
-        val reason = if (userInitiatedTransition) MEDIA_ITEM_TRANSITION_REASON_SEEK else MEDIA_ITEM_TRANSITION_REASON_PLAYLIST_CHANGED
+        val reason =
+            if (userInitiatedTransition) MEDIA_ITEM_TRANSITION_REASON_SEEK else MEDIA_ITEM_TRANSITION_REASON_PLAYLIST_CHANGED
         userInitiatedTransition = false
         notifyListeners(events.toTypedArray()) {
             it.onTimelineChanged(currentTimeline, TIMELINE_CHANGE_REASON_PLAYLIST_CHANGED)
@@ -387,6 +419,20 @@ class VlcPlayer(ctx: Context) :
         }
     }
 
+    // vlc keys each slave's tracks by the md5 of its uri ("<md5(uri)>/spu/<n>")
+    private fun subtitleSlaveForTrackId(trackId: String): MediaItem.SubtitleConfiguration? {
+        val hash = trackId.substringBefore("/spu/", "")
+        if (hash.isEmpty()) return null
+        return mediaItems.getOrNull(currentMediaItemIndex)
+            ?.localConfiguration?.subtitleConfigurations
+            ?.firstOrNull { md5(it.uri.toString()) == hash }
+    }
+
+    private fun md5(value: String): String =
+        MessageDigest.getInstance("MD5")
+            .digest(value.toByteArray())
+            .joinToString("") { "%02x".format(it.toInt() and 0xFF) }
+
     // vlc doesn't allow arbitrary headers :c
     private fun applyRequestHeaders(media: Media, extras: Bundle?) {
         if (extras == null) return
@@ -415,6 +461,7 @@ class VlcPlayer(ctx: Context) :
         mediaItems = emptyList()
         currentMediaItemIndex = INDEX_UNSET
         playlistMetadata = MediaMetadata.EMPTY
+        pendingSeekPosition = TIME_UNSET
         player.stop()
 
         val events = mutableListOf(
@@ -480,7 +527,8 @@ class VlcPlayer(ctx: Context) :
         seekCommand: Int,
         isRepeatingCurrentItem: Boolean
     ) {
-        val targetIndex = if (mediaItemIndex == INDEX_UNSET) currentMediaItemIndex else mediaItemIndex
+        val targetIndex =
+            if (mediaItemIndex == INDEX_UNSET) currentMediaItemIndex else mediaItemIndex
         if (targetIndex == INDEX_UNSET || targetIndex !in mediaItems.indices) return
 
         if (targetIndex != currentMediaItemIndex) {
@@ -492,6 +540,10 @@ class VlcPlayer(ctx: Context) :
 
         val from = getCurrentPosition()
         val target = positionMs.coerceAtLeast(0L).takeIf { it != TIME_UNSET } ?: 0L
+        if (player.isSeekable) {
+            seekOriginPosition = player.time.coerceAtLeast(0L)
+            pendingSeekPosition = target
+        }
         player.time = target
         // since vlc reports progress events every few ms they don't have a seek finished event.
         notifyListeners(EVENT_POSITION_DISCONTINUITY) {
@@ -571,7 +623,10 @@ class VlcPlayer(ctx: Context) :
                         .setAverageBitrate(track.bitrate.takeIf { it > 0 } ?: Format.NO_VALUE)
                         .build()
                 }
-                val group = TrackGroup("vlc-video-${videoTracks.minOf { it.id }}", *videoFormats.toTypedArray())
+                val group = TrackGroup(
+                    "vlc-video-${videoTracks.minOf { it.id }}",
+                    *videoFormats.toTypedArray()
+                )
                 val selected = BooleanArray(videoFormats.size) { idx ->
                     selectedVideo != null && selectedVideo.id == videoTracks[idx].id
                 }
@@ -590,7 +645,10 @@ class VlcPlayer(ctx: Context) :
                         .setSampleMimeType("audio/x-unknown")
                         .build()
                 }
-                val group = TrackGroup("vlc-audio-${audioTracks.minOf { it.id }}", *audioFormats.toTypedArray())
+                val group = TrackGroup(
+                    "vlc-audio-${audioTracks.minOf { it.id }}",
+                    *audioFormats.toTypedArray()
+                )
                 val selected = BooleanArray(audioFormats.size) { idx ->
                     selectedAudio != null && selectedAudio.id == audioTracks[idx].id
                 }
@@ -599,14 +657,17 @@ class VlcPlayer(ctx: Context) :
             }
 
         player.getTracks(IMedia.Track.Type.Text)?.forEach { track ->
+            // external subs don't have label/language, match them back to surface them
+            val slave = subtitleSlaveForTrackId(track.id)
             val format = Format.Builder()
                 .setId(track.id)
-                .setLabel(track.name)
+                .setLabel(slave?.label ?: track.name)
-                .setLanguage(track.language)
+                .setLanguage(slave?.language ?: track.language)
                 .setSampleMimeType("text/x-unknown")
                 .build()
             val group = TrackGroup("vlc-sub-${track.id}", format)
-            val selected = booleanArrayOf(selectedSubtitle != null && selectedSubtitle.id == track.id)
+            val selected =
+                booleanArrayOf(selectedSubtitle != null && selectedSubtitle.id == track.id)
             val support = intArrayOf(FORMAT_HANDLED)
             result.add(Group(group, false, support, selected))
         }
@@ -644,10 +705,12 @@ class VlcPlayer(ctx: Context) :
                     player.setVideoTrackEnabled(true)
                     player.selectTrack(trackId)
                 }
+
                 TRACK_TYPE_AUDIO -> {
                     hasAudioOverride = true
                     player.selectTrack(trackId)
                 }
+
                 TRACK_TYPE_TEXT -> {
                     hasTextOverride = true
                     player.selectTrack(trackId)
@@ -692,7 +755,12 @@ class VlcPlayer(ctx: Context) :
         val preferredLabels = labels.filter { it.isNotEmpty() }
         if (preferredLanguages.isEmpty() && preferredLabels.isEmpty()) return null
 
-        data class Candidate(val id: String, val langIndex: Int, val labelIndex: Int, val hasDefaultFlag: Boolean)
+        data class Candidate(
+            val id: String,
+            val langIndex: Int,
+            val labelIndex: Int,
+            val hasDefaultFlag: Boolean
+        )
 
         val candidates = tracks.groups
             .filter { it.type == trackType }
@@ -742,7 +810,8 @@ class VlcPlayer(ctx: Context) :
         // timelines are immutable
         val items = mediaItems
         val currentIndex = currentMediaItemIndex
-        val currentDurationUs = duration.takeIf { it != TIME_UNSET }?.let { it * 1000L } ?: TIME_UNSET
+        val currentDurationUs =
+            duration.takeIf { it != TIME_UNSET }?.let { it * 1000L } ?: TIME_UNSET
         if (items.isEmpty()) return Timeline.EMPTY
         return object : Timeline() {
             private fun durationUsForIndex(index: Int): Long =
@@ -797,7 +866,11 @@ class VlcPlayer(ctx: Context) :
 
     override fun getDuration(): Long = player.length.takeIf { it > 0 } ?: TIME_UNSET
 
-    override fun getCurrentPosition() = player.time.coerceAtLeast(0L)
+    override fun getCurrentPosition(): Long {
+        val pending = pendingSeekPosition
+        if (pending != TIME_UNSET) return pending
+        return player.time.coerceAtLeast(0L)
+    }
 
     override fun getBufferedPosition(): Long {
         val duration = getDuration()
@@ -880,30 +953,22 @@ class VlcPlayer(ctx: Context) :
         if (surfaceView == null) return clearVideoSurface()
         if (vlcVout.areViewsAttached() && boundSurfaceView === surfaceView) return
         boundSurfaceView = surfaceView
-        // Hand VLC the SurfaceView (not a raw Surface) so it reads the real view
+        videoOutputStale = (
-        // size and keeps the video layout correct as the surface resizes (e.g. the
+            player.playerState == IMedia.State.Playing ||
-        // PIP window shrinking/growing); see updateVideoLayout for size updates.
+            player.playerState == IMedia.State.Paused
+        )
         vlcVout.setVideoView(surfaceView)
         vlcVout.attachViews()
     }
 
-    /**
-     * VLC tears down its video decoder + output whenever the output Surface is
-     * destroyed (e.g. the SurfaceView being reparented for PIP) and does not
-     * rebuild them when a new Surface arrives — the picture stays black. Toggling
-     * the video track forces VLC to spin up a fresh decoder/vout against the
-     * currently-attached Surface. Safe no-op when nothing is attached/playing.
-     */
     fun rebuildVideoOutput() {
-        if (!vlcVout.areViewsAttached() || !player.isPlaying) return
+        if (!videoOutputStale || !player.isPlaying || !vlcVout.areViewsAttached()) return
+        videoOutputStale = false
         player.setVideoTrackEnabled(false)
         player.setVideoTrackEnabled(true)
         player.updateVideoSurfaces()
     }
 
-    /** Recompute the video layout for the current surface size. Must run whenever
-     * the surface resizes (VLC latches a stale geometry otherwise -> the picture
-     * renders at the wrong size, anchored in a corner). */
     fun updateVideoLayout(width: Int, height: Int) {
         if (!vlcVout.areViewsAttached()) return
         if (width > 0 && height > 0) vlcVout.setWindowSize(width, height)
@@ -935,7 +1000,8 @@ class VlcPlayer(ctx: Context) :
     }
 
     override fun getVideoSize(): VideoSize {
-        val videoTrack = player.getSelectedTrack(IMedia.Track.Type.Video) as? VideoTrack ?: return VideoSize.UNKNOWN
+        val videoTrack = player.getSelectedTrack(IMedia.Track.Type.Video) as? VideoTrack
+            ?: return VideoSize.UNKNOWN
         if (videoTrack.width <= 0 || videoTrack.height <= 0) return VideoSize.UNKNOWN
         val par = if (videoTrack.sarNum > 0 && videoTrack.sarDen > 0) {
             videoTrack.sarNum.toFloat() / videoTrack.sarDen.toFloat()

example/android/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.3.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

src/provider.web.tsx

@@ -1,13 +1,7 @@
 import { createPlayer } from "@videojs/react";
 import { GoogleCast } from "@videojs/react/media/google-cast";
 import { videoFeatures } from "@videojs/react/video";
-import {
+import { createContext, type ReactNode, useContext, useEffect } from "react";
-	createContext,
-	type ReactNode,
-	useContext,
-	useEffect,
-	useRef,
-} from "react";
 import { usePlayerState } from "./events";
 import { WebOmniPlayer } from "./player.web";
 import type { OmniPlayer, PlayerBackend } from "./types/player";
@@ -58,16 +52,10 @@ const PlayerInitializer = ({
 }) => {
 	const store = VideoPlayer.usePlayer();
 	const player = useLazyRef(() => new WebOmniPlayer(store));
-	const seekedForSrc = useRef<string | undefined>(undefined);
 
 	useEffect(() => {
 		player.source = source;
-		const uri = source?.src?.uri;
+	}, [source]);
-		if (uri !== seekedForSrc.current) {
-			seekedForSrc.current = uri;
-			if (source?.startTime) store.seek(source.startTime);
-		}
-	}, [source, store]);
 
 	useEffect(() => {
 		player.showNotification = showNotification;

src/view.web.tsx

@@ -134,6 +134,17 @@ export const OmniView = ({
 		[],
 	);
 
+	const player = usePlayer();
+	const uri = source?.src.uri;
+	const startTime = source?.startTime;
+	const prevUri = useRef<string | undefined>(undefined);
+	useEffect(() => {
+		if (!uri) return;
+		if (startTime) player.currentTime = startTime;
+		if (autoplay && prevUri.current && prevUri.current !== uri) player.play();
+		prevUri.current = uri;
+	}, [player, uri, startTime, autoplay]);
+
 	// While casting, the receiver renders subtitles (the player forwards the
 	// selection); skip rendering them locally on the idle <video>.
 	const castStatus = usePlayerState("castStatus");