Rip DLNA code paths, collapse to Chromecast-only

- chore(cast): drop protocol-toggle settings, strings, perms, deps
- gate cast on play flavor via BuildConfig.IS_CASTING_AVAILABLE
- fix(cast): keep local player paused across recompose; disable transport while casting

amethyst/build.gradle

@@ -199,10 +199,12 @@ android {
         play {
             getIsDefault().set(true)
             dimension "channel"
+            buildConfigField "boolean", "IS_CASTING_AVAILABLE", "true"
         }
 
         fdroid {
             dimension "channel"
+            buildConfigField "boolean", "IS_CASTING_AVAILABLE", "false"
         }
     }
 
@@ -379,20 +381,6 @@ dependencies {
     //PushNotifications(FDroid)
     fdroidImplementation libs.unifiedpush
 
-    // DLNA / UPnP discovery and AVTransport — used by the LAN cast feature in
-    // both flavors. jUPnP is the maintained fork of Cling.
-    implementation libs.jupnp.core
-    implementation libs.jupnp.android
-    implementation libs.jupnp.support
-    // jUPnP-android's AndroidUpnpServiceConfiguration.createStreamServer wires
-    // in JettyServletContainer (needs jetty-server + jetty-servlet) AND
-    // createStreamClient wires in JettyStreamClientImpl (needs jetty-client) —
-    // without all three jUPnP throws NoClassDefFoundError on startup() and
-    // DLNA discovery never starts.
-    implementation libs.jetty.server
-    implementation libs.jetty.servlet
-    implementation libs.jetty.client
-
     // Google Cast SDK — Chromecast support. Play flavor only because the
     // framework hard-depends on Google Play services, which is unavailable
     // on de-Googled / GrapheneOS devices that ship the F-Droid build.

amethyst/proguard-rules.pro

@@ -70,10 +70,3 @@
     <init>();
 }
 
-# jUPnP ships optional Jetty + OSGi transport adapters that Android doesn't
-# use (we run jupnp-android's Servlet-less transport). Tell R8 to ignore the
-# dangling references rather than fail the minify step.
--dontwarn org.eclipse.jetty.**
--dontwarn org.osgi.**
--dontwarn javax.servlet.**
--dontwarn org.jupnp.transport.impl.jetty.**

amethyst/src/fdroid/java/com/vitorpamplona/amethyst/service/cast/chromecast/ChromecastCaster.kt

@@ -22,10 +22,8 @@ package com.vitorpamplona.amethyst.service.cast.chromecast
 
 import android.content.Context
 import com.vitorpamplona.amethyst.service.cast.CastDevice
-import com.vitorpamplona.amethyst.service.cast.CastDeviceKind
 import com.vitorpamplona.amethyst.service.cast.CastRequest
 import com.vitorpamplona.amethyst.service.cast.CastSessionState
-import com.vitorpamplona.amethyst.service.cast.VideoCaster
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
@@ -33,26 +31,27 @@ import kotlinx.coroutines.flow.asStateFlow
 /**
  * F-Droid stub: the Google Cast SDK requires Google Play services, which are
  * not present on the FOSS build. This caster always reports an empty device
- * list so the registry simply skips Chromecast paths at runtime.
+ * list so the registry simply returns no devices. The cast button is hidden
+ * on fdroid via `BuildConfig.IS_CASTING_AVAILABLE`, so this stub should never
+ * be exercised at runtime; it exists to keep the shared-source-set
+ * `CastRegistry` constructible.
  */
 @Suppress("UNUSED_PARAMETER")
 class ChromecastCaster(
     appContext: Context,
-) : VideoCaster {
+) {
-    override val kind: CastDeviceKind = CastDeviceKind.Chromecast
+    val devices: StateFlow<List<CastDevice>> = MutableStateFlow<List<CastDevice>>(emptyList()).asStateFlow()
 
-    override val devices: StateFlow<List<CastDevice>> = MutableStateFlow<List<CastDevice>>(emptyList()).asStateFlow()
+    val sessionState: StateFlow<CastSessionState> = MutableStateFlow<CastSessionState>(CastSessionState.Idle).asStateFlow()
 
-    override val sessionState: StateFlow<CastSessionState> = MutableStateFlow<CastSessionState>(CastSessionState.Idle).asStateFlow()
+    fun startDiscovery() = Unit
 
-    override fun startDiscovery() = Unit
+    fun stopDiscovery() = Unit
 
-    override fun stopDiscovery() = Unit
+    suspend fun cast(
-
-    override suspend fun cast(
         device: CastDevice,
         request: CastRequest,
     ) = Unit
 
-    override suspend fun stopCasting() = Unit
+    suspend fun stopCasting() = Unit
 }

amethyst/src/main/AndroidManifest.xml

@@ -42,11 +42,6 @@
          (otherwise the wrapper waits ~30s for QUIC PTO before reconnecting). -->
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 
-    <!-- DLNA SSDP discovery (multicast 239.255.255.250:1900) for the LAN cast
-         feature. Acquired only while the cast device picker is open. -->
-    <uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE" />
-    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
-
     <!-- Audio/Video Playback -->
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" />

amethyst/src/main/java/com/vitorpamplona/amethyst/AppModules.kt

@@ -493,12 +493,12 @@ class AppModules(
         Nip95CacheFactory.new(appContext)
     }
 
-    // LAN cast registry — aggregates Chromecast (play flavor only) and DLNA
+    // LAN cast registry — Chromecast only (play flavor real, fdroid no-op
-    // discovery into a single device list. Discovery starts only when the
+    // stub). Discovery starts only when the picker dialog opens; idle by
-    // picker dialog opens; idle by default to keep multicast traffic off.
+    // default to keep multicast traffic off.
     val castRegistry: CastRegistry by lazy {
         Log.d("AppModules", "CastRegistry Init")
-        CastRegistry(appContext, applicationIOScope, uiPrefs.value.castProtocol)
+        CastRegistry(appContext)
     }
 
     // local video cache with disk + memory

amethyst/src/main/java/com/vitorpamplona/amethyst/model/UiSettings.kt

@@ -47,7 +47,6 @@ data class UiSettings(
     val showHomeNewThreadsTab: Boolean = true,
     val showHomeConversationsTab: Boolean = true,
     val showHomeEverythingTab: Boolean = false,
-    val castProtocol: CastProtocolType = CastProtocolType.BOTH,
 )
 
 enum class ThemeType(
@@ -148,23 +147,6 @@ fun parseBooleanType(screenCode: Int): BooleanType =
         else -> BooleanType.ALWAYS
     }
 
-enum class CastProtocolType(
-    val screenCode: Int,
-    val resourceId: Int,
-) {
-    BOTH(0, R.string.cast_protocol_both),
-    CHROMECAST(1, R.string.cast_protocol_chromecast),
-    DLNA(2, R.string.cast_protocol_dlna),
-}
-
-fun parseCastProtocolType(screenCode: Int): CastProtocolType =
-    when (screenCode) {
-        CastProtocolType.BOTH.screenCode -> CastProtocolType.BOTH
-        CastProtocolType.CHROMECAST.screenCode -> CastProtocolType.CHROMECAST
-        CastProtocolType.DLNA.screenCode -> CastProtocolType.DLNA
-        else -> CastProtocolType.BOTH
-    }
-
 enum class WarningType(
     val prefCode: Boolean?,
     val screenCode: Int,

amethyst/src/main/java/com/vitorpamplona/amethyst/model/UiSettingsFlow.kt

@@ -47,7 +47,6 @@ class UiSettingsFlow(
     val showHomeNewThreadsTab: MutableStateFlow<Boolean> = MutableStateFlow(true),
     val showHomeConversationsTab: MutableStateFlow<Boolean> = MutableStateFlow(true),
     val showHomeEverythingTab: MutableStateFlow<Boolean> = MutableStateFlow(false),
-    val castProtocol: MutableStateFlow<CastProtocolType> = MutableStateFlow(CastProtocolType.BOTH),
 ) {
     val listOfFlows: List<Flow<Any?>> =
         listOf<Flow<Any?>>(
@@ -69,7 +68,6 @@ class UiSettingsFlow(
             showHomeNewThreadsTab,
             showHomeConversationsTab,
             showHomeEverythingTab,
-            castProtocol,
         )
 
     // emits at every change in any of the propertyes.
@@ -95,7 +93,6 @@ class UiSettingsFlow(
                 flows[15] as Boolean,
                 flows[16] as Boolean,
                 flows[17] as Boolean,
-                flows[18] as CastProtocolType,
             )
         }
 
@@ -119,7 +116,6 @@ class UiSettingsFlow(
             showHomeNewThreadsTab.value,
             showHomeConversationsTab.value,
             showHomeEverythingTab.value,
-            castProtocol.value,
         )
 
     fun update(torSettings: UiSettings): Boolean {
@@ -197,10 +193,6 @@ class UiSettingsFlow(
             showHomeEverythingTab.tryEmit(torSettings.showHomeEverythingTab)
             any = true
         }
-        if (castProtocol.value != torSettings.castProtocol) {
-            castProtocol.tryEmit(torSettings.castProtocol)
-            any = true
-        }
 
         return any
     }
@@ -238,7 +230,6 @@ class UiSettingsFlow(
                 MutableStateFlow(uiSettings.showHomeNewThreadsTab),
                 MutableStateFlow(uiSettings.showHomeConversationsTab),
                 MutableStateFlow(uiSettings.showHomeEverythingTab),
-                MutableStateFlow(uiSettings.castProtocol),
             )
     }
 }

amethyst/src/main/java/com/vitorpamplona/amethyst/model/preferences/UISharedPreferences.kt

@@ -32,7 +32,6 @@ import androidx.datastore.preferences.core.stringPreferencesKey
 import androidx.datastore.preferences.preferencesDataStore
 import com.vitorpamplona.amethyst.LocalPreferences
 import com.vitorpamplona.amethyst.model.BooleanType
-import com.vitorpamplona.amethyst.model.CastProtocolType
 import com.vitorpamplona.amethyst.model.ConnectivityType
 import com.vitorpamplona.amethyst.model.FeatureSetType
 import com.vitorpamplona.amethyst.model.ProfileGalleryType
@@ -109,7 +108,6 @@ class UiSharedPreferences(
         val UI_PROPOSE_AI_IMPROVEMENTS = stringPreferencesKey("ui.propose_ai_improvements")
         val UI_USE_TRACKED_BROADCASTS = stringPreferencesKey("ui.use_tracked_broadcasts")
         val UI_BOTTOM_BAR_ITEMS = stringPreferencesKey("ui.bottom_bar_items")
-        val UI_CAST_PROTOCOL = stringPreferencesKey("ui.cast_protocol")
 
         suspend fun uiPreferences(context: Context): UiSettings? =
             try {
@@ -136,7 +134,6 @@ class UiSharedPreferences(
                         preferences[UI_USE_TRACKED_BROADCASTS]?.let { BooleanType.valueOf(it) }
                             ?: if (featureSet == FeatureSetType.COMPLETE) BooleanType.ALWAYS else BooleanType.NEVER,
                     bottomBarItems = preferences[UI_BOTTOM_BAR_ITEMS]?.let { decodeBottomBarItems(it) } ?: DefaultBottomBarItems,
-                    castProtocol = preferences[UI_CAST_PROTOCOL]?.let { runCatching { CastProtocolType.valueOf(it) }.getOrNull() } ?: CastProtocolType.BOTH,
                 )
             } catch (e: Exception) {
                 if (e is CancellationException) throw e
@@ -176,7 +173,6 @@ class UiSharedPreferences(
                     preferences[UI_PROPOSE_AI_IMPROVEMENTS] = sharedSettings.automaticallyProposeAiImprovements.name
                     preferences[UI_USE_TRACKED_BROADCASTS] = sharedSettings.useTrackedBroadcasts.name
                     preferences[UI_BOTTOM_BAR_ITEMS] = sharedSettings.bottomBarItems.joinToString(",") { it.name }
-                    preferences[UI_CAST_PROTOCOL] = sharedSettings.castProtocol.name
                 }
             } catch (e: Exception) {
                 if (e is CancellationException) throw e

amethyst/src/main/java/com/vitorpamplona/amethyst/service/cast/CastDevice.kt

@@ -22,16 +22,10 @@ package com.vitorpamplona.amethyst.service.cast
 
 import androidx.compose.runtime.Immutable
 
-enum class CastDeviceKind {
-    Chromecast,
-    Dlna,
-}
-
 @Immutable
 data class CastDevice(
     val id: String,
     val name: String,
-    val kind: CastDeviceKind,
 )
 
 @Immutable

amethyst/src/main/java/com/vitorpamplona/amethyst/service/cast/CastRegistry.kt

@@ -21,138 +21,36 @@
 package com.vitorpamplona.amethyst.service.cast
 
 import android.content.Context
-import com.vitorpamplona.amethyst.model.CastProtocolType
 import com.vitorpamplona.amethyst.service.cast.chromecast.ChromecastCaster
-import com.vitorpamplona.amethyst.service.cast.dlna.DlnaCaster
 import com.vitorpamplona.quartz.utils.Log
-import kotlinx.coroutines.CancellationException
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.async
-import kotlinx.coroutines.awaitAll
-import kotlinx.coroutines.coroutineScope
-import kotlinx.coroutines.flow.MutableStateFlow
-import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
-import kotlinx.coroutines.flow.combine
-import kotlinx.coroutines.flow.stateIn
-import kotlinx.coroutines.launch
-import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.atomic.AtomicInteger
 
 private const val TAG = "CastRegistry"
 
 /**
- * Aggregates every [VideoCaster] implementation available on this build into
+ * Thin wrapper around the platform-flavor [ChromecastCaster]. Ref-counts
- * a single device list and a single active-session view, so the cast UI
+ * discovery starts/stops so multiple UI callers (picker dialog open + cast
- * doesn't care whether a device speaks Chromecast or DLNA.
+ * tap) can coordinate without tearing the underlying scan down mid-cast.
  *
- * Discovery is started/stopped explicitly by callers (typically the picker
+ * On fdroid the wrapped [ChromecastCaster] is a no-op stub — the registry
- * dialog's DisposableEffect) so that SSDP multicast traffic + the
+ * still constructs and answers cleanly, but discovery returns no devices.
- * MulticastLock are only paid for while the user is choosing.
+ * Casting is hidden entirely on fdroid via `BuildConfig.IS_CASTING_AVAILABLE`.
- *
- * The registry honours [protocolFlow]: when the user has narrowed cast to a
- * single protocol, the disabled caster never starts discovery and its devices
- * are filtered out of [devices]. Switching protocols mid-session leaves any
- * active cast running — only future discovery is affected.
  */
 class CastRegistry(
     appContext: Context,
-    scope: CoroutineScope,
-    private val protocolFlow: StateFlow<CastProtocolType> =
-        MutableStateFlow(CastProtocolType.BOTH),
 ) {
-    private val casters: List<VideoCaster> =
+    private val caster = ChromecastCaster(appContext)
-        listOf(
-            ChromecastCaster(appContext),
-            DlnaCaster(appContext),
-        )
 
-    val devices: StateFlow<List<CastDevice>> =
+    val devices: StateFlow<List<CastDevice>> = caster.devices
-        combine(
+    val sessionState: StateFlow<CastSessionState> = caster.sessionState
-            combine(casters.map { it.devices }) { snapshots -> snapshots.toList() },
-            protocolFlow,
-        ) { snapshots, proto ->
-            val merged =
-                snapshots.flatMapIndexed { index, list ->
-                    if (isCasterEnabled(casters[index], proto)) list else emptyList()
-                }
-            Log.d(TAG) {
-                "devices flow update proto=$proto " +
-                    snapshots.mapIndexed { i, l -> "${casters[i].kind}=${l.size}" }.joinToString() +
-                    " merged=${merged.size} -> [${merged.joinToString { "${it.kind}:${it.name}" }}]"
-            }
-            merged
-        }.stateIn(scope, SharingStarted.WhileSubscribed(5_000), emptyList())
-
-    val sessionState: StateFlow<CastSessionState> =
-        combine(casters.map { it.sessionState }) { states ->
-            states.firstOrNull { it !is CastSessionState.Idle } ?: CastSessionState.Idle
-        }.stateIn(scope, SharingStarted.WhileSubscribed(5_000), CastSessionState.Idle)
 
     private val refCount = AtomicInteger(0)
-    private val active =
-        ConcurrentHashMap<CastDeviceKind, Boolean>().apply {
-            casters.forEach { put(it.kind, false) }
-        }
-
-    init {
-        Log.d(TAG) {
-            "init casters=[${casters.joinToString { it.kind.name }}] initialProtocol=${protocolFlow.value}"
-        }
-        scope.launch {
-            protocolFlow.collect { proto ->
-                Log.d(TAG) { "protocolFlow change -> $proto refCount=${refCount.get()}" }
-                if (refCount.get() > 0) reconcile()
-            }
-        }
-    }
-
-    private fun isCasterEnabled(
-        caster: VideoCaster,
-        proto: CastProtocolType,
-    ): Boolean =
-        when (proto) {
-            CastProtocolType.BOTH -> true
-            CastProtocolType.CHROMECAST -> caster.kind == CastDeviceKind.Chromecast
-            CastProtocolType.DLNA -> caster.kind == CastDeviceKind.Dlna
-        }
-
-    @Synchronized
-    private fun reconcile() {
-        val proto = protocolFlow.value
-        casters.forEach { caster ->
-            val shouldRun = isCasterEnabled(caster, proto)
-            val running = active[caster.kind] == true
-            if (shouldRun && !running) {
-                Log.d(TAG) { "reconcile START ${caster.kind} (proto=$proto)" }
-                runCatching { caster.startDiscovery() }
-                    .onFailure { Log.w(TAG, "reconcile START ${caster.kind} threw: ${it.message}", it) }
-                active[caster.kind] = true
-            } else if (!shouldRun && running) {
-                Log.d(TAG) { "reconcile STOP ${caster.kind} (proto=$proto)" }
-                runCatching { caster.stopDiscovery() }
-                    .onFailure { Log.w(TAG, "reconcile STOP ${caster.kind} threw: ${it.message}", it) }
-                active[caster.kind] = false
-            }
-        }
-    }
-
-    @Synchronized
-    private fun stopAll() {
-        Log.d(TAG) { "stopAll active=${active.filterValues { it }.keys}" }
-        casters.forEach { caster ->
-            if (active[caster.kind] == true) {
-                runCatching { caster.stopDiscovery() }
-                    .onFailure { Log.w(TAG, "stopAll ${caster.kind} threw: ${it.message}", it) }
-                active[caster.kind] = false
-            }
-        }
-    }
 
     fun startDiscovery() {
         val before = refCount.getAndIncrement()
         Log.d(TAG) { "startDiscovery refCount $before -> ${before + 1}" }
-        if (before == 0) reconcile()
+        if (before == 0) caster.startDiscovery()
     }
 
     fun stopDiscovery() {
@@ -160,7 +58,7 @@ class CastRegistry(
         Log.d(TAG) { "stopDiscovery refCount -> $after" }
         if (after <= 0) {
             refCount.set(0)
-            stopAll()
+            caster.stopDiscovery()
         }
     }
 
@@ -168,32 +66,12 @@ class CastRegistry(
         device: CastDevice,
         request: CastRequest,
     ) {
-        Log.d(TAG) {
+        Log.d(TAG) { "cast device=${device.name} url=${request.url} mime=${request.mimeType}" }
-            "cast device=${device.kind}:${device.name} url=${request.url} mime=${request.mimeType}"
-        }
-        val caster = casters.firstOrNull { it.kind == device.kind }
-        if (caster == null) {
-            Log.w(TAG, "cast: no caster found for kind=${device.kind}")
-            return
-        }
         caster.cast(device, request)
     }
 
     suspend fun stopCasting() {
-        Log.d(TAG) { "stopCasting (broadcast to all casters)" }
+        Log.d(TAG) { "stopCasting" }
-        coroutineScope {
-            casters
-                .map { caster ->
-                    async {
-                        try {
         caster.stopCasting()
-                        } catch (ce: CancellationException) {
-                            throw ce
-                        } catch (t: Throwable) {
-                            Log.w(TAG, "stopCasting ${caster.kind} threw: ${t.message}", t)
-                        }
-                    }
-                }.awaitAll()
-        }
     }
 }

amethyst/src/main/java/com/vitorpamplona/amethyst/service/cast/VideoCaster.kt

@@ -1,63 +0,0 @@
-/*
- * Copyright (c) 2025 Vitor Pamplona
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy of
- * this software and associated documentation files (the "Software"), to deal in
- * the Software without restriction, including without limitation the rights to use,
- * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
- * Software, and to permit persons to whom the Software is furnished to do so,
- * subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
- * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-package com.vitorpamplona.amethyst.service.cast
-
-import kotlinx.coroutines.flow.StateFlow
-
-/**
- * Common contract for any LAN cast protocol that Amethyst can drive — currently
- * Chromecast (Google Cast SDK, play flavor only) and DLNA / UPnP AVTransport
- * (jUPnP, both flavors). The registry layer aggregates one or more of these
- * to give the UI a unified device list and active-session state.
- */
-interface VideoCaster {
-    /** Which protocol this caster speaks. The registry routes by [CastDevice.kind]. */
-    val kind: CastDeviceKind
-
-    /** Discovered receiver devices; emits a snapshot whenever the set changes. */
-    val devices: StateFlow<List<CastDevice>>
-
-    /** Status of the active casting session owned by this caster. */
-    val sessionState: StateFlow<CastSessionState>
-
-    /**
-     * Called by the registry while at least one observer wants device updates
-     * (typically: the picker dialog is open, or a session is active).
-     * Implementations should be idempotent.
-     */
-    fun startDiscovery()
-
-    /** Counterpart to [startDiscovery]. Idempotent; no-op when not running. */
-    fun stopDiscovery()
-
-    /**
-     * Hand a video off to [device] and start playback. Updates [sessionState]
-     * to Connecting → Casting (or Error). [device] must be one this caster
-     * emitted in [devices].
-     */
-    suspend fun cast(
-        device: CastDevice,
-        request: CastRequest,
-    )
-
-    /** End the active session if any. Idempotent. */
-    suspend fun stopCasting()
-}

amethyst/src/main/java/com/vitorpamplona/amethyst/service/cast/dlna/DlnaCaster.kt

@@ -1,379 +0,0 @@
-/*
- * Copyright (c) 2025 Vitor Pamplona
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy of
- * this software and associated documentation files (the "Software"), to deal in
- * the Software without restriction, including without limitation the rights to use,
- * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
- * Software, and to permit persons to whom the Software is furnished to do so,
- * subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
- * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-package com.vitorpamplona.amethyst.service.cast.dlna
-
-import android.content.Context
-import android.net.wifi.WifiManager
-import com.vitorpamplona.amethyst.service.cast.CastDevice
-import com.vitorpamplona.amethyst.service.cast.CastDeviceKind
-import com.vitorpamplona.amethyst.service.cast.CastRequest
-import com.vitorpamplona.amethyst.service.cast.CastSessionState
-import com.vitorpamplona.amethyst.service.cast.VideoCaster
-import com.vitorpamplona.amethyst.service.cast.effectiveMimeType
-import com.vitorpamplona.quartz.utils.Log
-import kotlinx.coroutines.CompletableDeferred
-import kotlinx.coroutines.flow.MutableStateFlow
-import kotlinx.coroutines.flow.StateFlow
-import kotlinx.coroutines.flow.asStateFlow
-import org.jupnp.UpnpService
-import org.jupnp.UpnpServiceImpl
-import org.jupnp.android.AndroidUpnpServiceConfiguration
-import org.jupnp.model.action.ActionInvocation
-import org.jupnp.model.message.UpnpResponse
-import org.jupnp.model.message.header.STAllHeader
-import org.jupnp.model.meta.LocalDevice
-import org.jupnp.model.meta.RemoteDevice
-import org.jupnp.model.types.UDADeviceType
-import org.jupnp.model.types.UDAServiceType
-import org.jupnp.model.types.UDN
-import org.jupnp.registry.Registry
-import org.jupnp.registry.RegistryListener
-import org.jupnp.support.avtransport.callback.Play
-import org.jupnp.support.avtransport.callback.SetAVTransportURI
-import org.jupnp.support.avtransport.callback.Stop
-import org.jupnp.support.contentdirectory.DIDLParser
-import org.jupnp.support.model.DIDLContent
-import org.jupnp.support.model.ProtocolInfo
-import org.jupnp.support.model.Res
-import org.jupnp.support.model.item.VideoItem
-import java.util.concurrent.ConcurrentHashMap
-
-private const val TAG = "DlnaCaster"
-
-private val MEDIA_RENDERER = UDADeviceType("MediaRenderer")
-private val AV_TRANSPORT = UDAServiceType("AVTransport")
-
-class DlnaCaster(
-    private val appContext: Context,
-) : VideoCaster {
-    override val kind: CastDeviceKind = CastDeviceKind.Dlna
-
-    private val devicesFlow = MutableStateFlow<List<CastDevice>>(emptyList())
-    override val devices: StateFlow<List<CastDevice>> = devicesFlow.asStateFlow()
-
-    private val sessionFlow = MutableStateFlow<CastSessionState>(CastSessionState.Idle)
-    override val sessionState: StateFlow<CastSessionState> = sessionFlow.asStateFlow()
-
-    private val knownDevices = ConcurrentHashMap<String, RemoteDevice>()
-    private var multicastLock: WifiManager.MulticastLock? = null
-
-    @Volatile
-    private var upnpService: UpnpService? = null
-
-    private val listener =
-        object : RegistryListener {
-            override fun remoteDeviceDiscoveryStarted(
-                registry: Registry,
-                device: RemoteDevice,
-            ) {
-                Log.d(TAG) { "discoveryStarted udn=${device.identity.udn} type=${device.type}" }
-            }
-
-            override fun remoteDeviceDiscoveryFailed(
-                registry: Registry,
-                device: RemoteDevice,
-                ex: Exception?,
-            ) {
-                Log.w(TAG, "discoveryFailed udn=${device.identity.udn} type=${device.type} ex=${ex?.message}", ex)
-            }
-
-            override fun remoteDeviceAdded(
-                registry: Registry,
-                device: RemoteDevice,
-            ) {
-                val isRenderer = device.type.implementsVersion(MEDIA_RENDERER)
-                Log.d(TAG) {
-                    "remoteDeviceAdded udn=${device.identity.udn} type=${device.type} renderer=$isRenderer name=${device.details?.friendlyName}"
-                }
-                if (isRenderer) addDevice(device)
-            }
-
-            override fun remoteDeviceUpdated(
-                registry: Registry,
-                device: RemoteDevice,
-            ) {
-                if (device.type.implementsVersion(MEDIA_RENDERER)) addDevice(device)
-            }
-
-            override fun remoteDeviceRemoved(
-                registry: Registry,
-                device: RemoteDevice,
-            ) {
-                Log.d(TAG) { "remoteDeviceRemoved udn=${device.identity.udn}" }
-                removeDevice(device.identity.udn.identifierString)
-            }
-
-            override fun localDeviceAdded(
-                registry: Registry,
-                device: LocalDevice,
-            ) = Unit
-
-            override fun localDeviceRemoved(
-                registry: Registry,
-                device: LocalDevice,
-            ) = Unit
-
-            override fun beforeShutdown(registry: Registry) = Unit
-
-            override fun afterShutdown() = Unit
-        }
-
-    private fun addDevice(device: RemoteDevice) {
-        val udn = device.identity.udn.identifierString
-        knownDevices[udn] = device
-        publish()
-    }
-
-    private fun removeDevice(udn: String) {
-        knownDevices.remove(udn)
-        publish()
-    }
-
-    private fun publish() {
-        devicesFlow.value =
-            knownDevices.values.map { device ->
-                CastDevice(
-                    id = device.identity.udn.identifierString,
-                    name = device.details?.friendlyName ?: device.displayString,
-                    kind = CastDeviceKind.Dlna,
-                )
-            }
-    }
-
-    @Synchronized
-    override fun startDiscovery() {
-        Log.d(TAG) { "startDiscovery (already running? ${upnpService != null})" }
-        if (upnpService != null) return
-        try {
-            acquireMulticastLock()
-            val service = UpnpServiceImpl(AndroidUpnpServiceConfiguration())
-            service.startup()
-            service.registry.addListener(listener)
-            // Republish anything already in the registry (covers reuse).
-            val preexisting =
-                service.registry.remoteDevices
-                    .filter { it.type.implementsVersion(MEDIA_RENDERER) }
-            Log.d(TAG) { "startDiscovery: preexisting renderers=${preexisting.size}" }
-            preexisting.forEach { addDevice(it) }
-            service.controlPoint.search(STAllHeader())
-            upnpService = service
-            Log.d(TAG) { "startDiscovery: jUPnP started, SSDP M-SEARCH sent (multicastLock held=${multicastLock?.isHeld})" }
-        } catch (t: Throwable) {
-            Log.w(TAG, "startDiscovery failed: ${t.message}", t)
-            releaseMulticastLock()
-        }
-    }
-
-    @Synchronized
-    override fun stopDiscovery() {
-        Log.d(TAG) { "stopDiscovery (running? ${upnpService != null})" }
-        val service = upnpService ?: return
-        try {
-            service.registry.removeListener(listener)
-            service.shutdown()
-        } catch (t: Throwable) {
-            Log.w(TAG, "stopDiscovery failed: ${t.message}", t)
-        }
-        upnpService = null
-        knownDevices.clear()
-        publish()
-        releaseMulticastLock()
-        Log.d(TAG) { "stopDiscovery: jUPnP stopped, multicast lock released" }
-    }
-
-    private fun acquireMulticastLock() {
-        if (multicastLock != null) return
-        try {
-            val wifi = appContext.applicationContext.getSystemService(Context.WIFI_SERVICE) as? WifiManager
-            if (wifi == null) {
-                Log.w(TAG, "acquireMulticastLock: WifiManager unavailable")
-                return
-            }
-            val lock = wifi.createMulticastLock("amethyst-dlna-cast")
-            lock.setReferenceCounted(false)
-            lock.acquire()
-            multicastLock = lock
-            Log.d(TAG) { "acquireMulticastLock: held=${lock.isHeld}" }
-        } catch (t: Throwable) {
-            Log.w(TAG, "acquireMulticastLock failed: ${t.message}", t)
-        }
-    }
-
-    private fun releaseMulticastLock() {
-        try {
-            multicastLock?.takeIf { it.isHeld }?.release()
-        } catch (t: Throwable) {
-            Log.w(TAG, "releaseMulticastLock failed: ${t.message}", t)
-        }
-        multicastLock = null
-    }
-
-    override suspend fun cast(
-        device: CastDevice,
-        request: CastRequest,
-    ) {
-        Log.d(TAG) { "cast device=${device.name} udn=${device.id} url=${request.url}" }
-        val service = upnpService
-        if (service == null) {
-            Log.w(TAG, "cast: jUPnP service not running")
-            sessionFlow.value = CastSessionState.Error(device, "DLNA service not running")
-            return
-        }
-        val remoteDevice = knownDevices[device.id] ?: service.registry.getRemoteDevice(UDN.valueOf(device.id), true)
-        if (remoteDevice == null) {
-            Log.w(TAG, "cast: device ${device.id} not in registry")
-            sessionFlow.value = CastSessionState.Error(device, "Device went offline")
-            return
-        }
-        val avTransport = remoteDevice.findService(AV_TRANSPORT)
-        if (avTransport == null) {
-            Log.w(TAG, "cast: device ${device.id} has no AVTransport service")
-            sessionFlow.value = CastSessionState.Error(device, "Device does not advertise AVTransport")
-            return
-        }
-
-        sessionFlow.value = CastSessionState.Connecting(device)
-
-        val metadata = buildDidlMetadata(request)
-        Log.d(TAG) { "cast: SetAVTransportURI -> ${request.url} (didl=${metadata.length}b)" }
-
-        val setUriDone = CompletableDeferred<Boolean>()
-        service.controlPoint.execute(
-            object : SetAVTransportURI(avTransport, request.url, metadata) {
-                override fun success(invocation: ActionInvocation<*>?) {
-                    setUriDone.complete(true)
-                }
-
-                override fun failure(
-                    invocation: ActionInvocation<*>?,
-                    operation: UpnpResponse?,
-                    defaultMsg: String?,
-                ) {
-                    Log.w(TAG, "SetAVTransportURI failed: $defaultMsg")
-                    setUriDone.complete(false)
-                }
-            },
-        )
-
-        val uriOk = setUriDone.await()
-        if (!uriOk) {
-            sessionFlow.value = CastSessionState.Error(device, "Receiver rejected the media URL")
-            return
-        }
-
-        val playDone = CompletableDeferred<Boolean>()
-        service.controlPoint.execute(
-            object : Play(avTransport) {
-                override fun success(invocation: ActionInvocation<*>?) {
-                    playDone.complete(true)
-                }
-
-                override fun failure(
-                    invocation: ActionInvocation<*>?,
-                    operation: UpnpResponse?,
-                    defaultMsg: String?,
-                ) {
-                    Log.w(TAG, "Play failed: $defaultMsg")
-                    playDone.complete(false)
-                }
-            },
-        )
-
-        if (playDone.await()) {
-            Log.d(TAG) { "cast: Play succeeded" }
-            sessionFlow.value = CastSessionState.Casting(device, request)
-        } else {
-            Log.w(TAG, "cast: Play action rejected by receiver")
-            sessionFlow.value = CastSessionState.Error(device, "Receiver rejected Play action")
-        }
-    }
-
-    override suspend fun stopCasting() {
-        Log.d(TAG) { "stopCasting (running? ${upnpService != null}, state=${sessionFlow.value::class.simpleName})" }
-        val service =
-            upnpService ?: run {
-                sessionFlow.value = CastSessionState.Idle
-                return
-            }
-        val current = sessionFlow.value
-        val device =
-            when (current) {
-                is CastSessionState.Casting -> {
-                    current.device
-                }
-
-                is CastSessionState.Connecting -> {
-                    current.device
-                }
-
-                else -> {
-                    sessionFlow.value = CastSessionState.Idle
-                    return
-                }
-            }
-        val remoteDevice = knownDevices[device.id]
-        val avTransport = remoteDevice?.findService(AV_TRANSPORT)
-        if (avTransport != null) {
-            val done = CompletableDeferred<Unit>()
-            service.controlPoint.execute(
-                object : Stop(avTransport) {
-                    override fun success(invocation: ActionInvocation<*>?) {
-                        done.complete(Unit)
-                    }
-
-                    override fun failure(
-                        invocation: ActionInvocation<*>?,
-                        operation: UpnpResponse?,
-                        defaultMsg: String?,
-                    ) {
-                        done.complete(Unit)
-                    }
-                },
-            )
-            done.await()
-        }
-        sessionFlow.value = CastSessionState.Idle
-    }
-
-    private fun buildDidlMetadata(request: CastRequest): String =
-        try {
-            val mime = request.effectiveMimeType()
-            val res = Res(ProtocolInfo("http-get:*:$mime:*"), null as Long?, request.url)
-            val item =
-                VideoItem(
-                    // id =
-                    "amethyst-cast-1",
-                    // parentID =
-                    "0",
-                    // title =
-                    request.title ?: "Amethyst",
-                    // creator =
-                    "Amethyst",
-                    res,
-                )
-            val didl = DIDLContent()
-            didl.addItem(item)
-            DIDLParser().generate(didl)
-        } catch (t: Throwable) {
-            Log.w(TAG, "Could not build DIDL metadata, sending empty: ${t.message}", t)
-            ""
-        }
-}

amethyst/src/main/java/com/vitorpamplona/amethyst/service/playback/composable/RenderVideoPlayer.kt

@@ -154,6 +154,7 @@ fun RenderVideoPlayer(
             RenderCenterButtons(
                 controllerState = controllerState,
                 controllerVisible = controllerVisible,
+                videoUri = mediaItem.src.videoUri,
                 modifier = Modifier.align(Alignment.Center),
                 isLiveStream = isLive,
             )

amethyst/src/main/java/com/vitorpamplona/amethyst/service/playback/composable/controls/PlayPauseButton.kt

@@ -81,6 +81,7 @@ fun AnimatedPlayPauseButton(
     controllerVisible: State<Boolean>,
     modifier: Modifier = Modifier,
     isPlaying: Boolean,
+    enabled: Boolean = true,
     onClick: () -> Unit,
 ) {
     AnimatedVisibility(
@@ -89,13 +90,14 @@ fun AnimatedPlayPauseButton(
         enter = remember { fadeIn() },
         exit = remember { fadeOut() },
     ) {
-        PlayPauseButton(isPlaying, onClick)
+        PlayPauseButton(isPlaying, enabled, onClick)
     }
 }
 
 @Composable
 fun PlayPauseButton(
     isPlaying: Boolean,
+    enabled: Boolean = true,
     onClick: () -> Unit,
 ) {
     Box(modifier = PlayIconSize, contentAlignment = Alignment.Center) {
@@ -108,6 +110,7 @@ fun PlayPauseButton(
 
         IconButton(
             onClick = onClick,
+            enabled = enabled,
             modifier = Modifier.size(80.dp),
         ) {
             if (!isPlaying) {

amethyst/src/main/java/com/vitorpamplona/amethyst/service/playback/composable/controls/RenderCenterButtons.kt

@@ -26,11 +26,15 @@ import androidx.compose.foundation.layout.Row
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.MutableState
+import androidx.compose.runtime.getValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.media3.common.util.UnstableApi
 import androidx.media3.ui.compose.state.rememberPlayPauseButtonState
+import com.vitorpamplona.amethyst.Amethyst
+import com.vitorpamplona.amethyst.service.cast.CastSessionState
 import com.vitorpamplona.amethyst.service.playback.composable.MediaControllerState
 import com.vitorpamplona.amethyst.service.playback.composable.seekBackward
 import com.vitorpamplona.amethyst.service.playback.composable.skipForward
@@ -41,34 +45,56 @@ import kotlinx.coroutines.delay
 fun RenderCenterButtons(
     controllerState: MediaControllerState,
     controllerVisible: MutableState<Boolean>,
+    videoUri: String,
     modifier: Modifier,
     isLiveStream: Boolean = false,
 ) {
     val state = rememberPlayPauseButtonState(controllerState.controller)
 
+    val castSessionState by Amethyst.instance.castRegistry.sessionState
+        .collectAsStateWithLifecycle()
+    val isCastingThisVideo =
+        (castSessionState as? CastSessionState.Casting)?.request?.url == videoUri
+
     Row(
         modifier = modifier,
         horizontalArrangement = Arrangement.spacedBy(20.dp),
         verticalAlignment = Alignment.CenterVertically,
     ) {
         if (!isLiveStream) {
-            AnimatedSkipButton(controllerVisible = controllerVisible, isForward = false) {
+            AnimatedSkipButton(
+                controllerVisible = controllerVisible,
+                isForward = false,
+                enabled = !isCastingThisVideo,
+            ) {
                 controllerState.controller.seekBackward()
             }
         }
 
-        AnimatedPlayPauseButton(controllerVisible, Modifier, !state.showPlay) {
+        AnimatedPlayPauseButton(
+            controllerVisible,
+            Modifier,
+            !state.showPlay,
+            enabled = !isCastingThisVideo,
+        ) {
             state.onClick()
         }
 
         if (!isLiveStream) {
-            AnimatedSkipButton(controllerVisible = controllerVisible, isForward = true) {
+            AnimatedSkipButton(
+                controllerVisible = controllerVisible,
+                isForward = true,
+                enabled = !isCastingThisVideo,
+            ) {
                 controllerState.controller.skipForward()
             }
         }
     }
 
-    if (!state.showPlay) {
+    // Auto-hide controls 3s after playback begins — but stay visible while
+    // casting so the user can see the disabled transport controls and find
+    // the cast-stop button in the top bar without tapping the screen first.
+    if (!state.showPlay && !isCastingThisVideo) {
         LaunchedEffect(state.showPlay) {
             delay(3000)
             controllerVisible.value = false

amethyst/src/main/java/com/vitorpamplona/amethyst/service/playback/composable/controls/RenderTopButtons.kt

@@ -50,6 +50,7 @@ import androidx.media3.common.Player
 import androidx.media3.common.Tracks
 import com.google.accompanist.permissions.ExperimentalPermissionsApi
 import com.vitorpamplona.amethyst.Amethyst
+import com.vitorpamplona.amethyst.BuildConfig
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.commons.icons.symbols.Icon
 import com.vitorpamplona.amethyst.commons.icons.symbols.MaterialSymbol
@@ -143,19 +144,39 @@ fun RenderTopButtons(
     val overflowQualityOpen = remember { mutableStateOf(false) }
 
     // Pause local playback while this video is casting so audio doesn't
-    // double up; only resume on the transition we caused.
+    // double up. Has to survive (a) the player instance being recreated when
+    // the composable scrolls off-screen and back on, and (b) any later
+    // playWhenReady=true flips from auto-play-on-attach or end-of-loading.
+    // A one-shot LaunchedEffect would only pause once; a Player.Listener
+    // re-pauses every time the player flips back to playing.
     val castSessionStateForLocal by Amethyst.instance.castRegistry.sessionState
         .collectAsStateWithLifecycle()
-    val wasCastingThisVideo = remember { mutableStateOf(false) }
+    val isCastingThisVideo =
-    LaunchedEffect(castSessionStateForLocal, mediaData.videoUri) {
-        val isCastingThis =
         (castSessionStateForLocal as? CastSessionState.Casting)?.request?.url == mediaData.videoUri
-        if (isCastingThis && !wasCastingThisVideo.value) {
+    DisposableEffect(player, isCastingThisVideo) {
+        if (isCastingThisVideo) {
             player.pause()
-        } else if (!isCastingThis && wasCastingThisVideo.value) {
+            val listener =
+                object : Player.Listener {
+                    override fun onIsPlayingChanged(isPlaying: Boolean) {
+                        if (isPlaying) player.pause()
+                    }
+                }
+            player.addListener(listener)
+            onDispose { player.removeListener(listener) }
+        } else {
+            onDispose { }
+        }
+    }
+    // Auto-resume local playback only on a genuine cast→no-cast transition
+    // (not on cold-mount when nothing is casting). `previousCasting` is keyed
+    // on videoUri so it resets when the player switches to a different note.
+    val previousCasting = remember(mediaData.videoUri) { mutableStateOf(false) }
+    LaunchedEffect(isCastingThisVideo, mediaData.videoUri) {
+        if (previousCasting.value && !isCastingThisVideo) {
             player.play()
         }
-        wasCastingThisVideo.value = isCastingThis
+        previousCasting.value = isCastingThisVideo
     }
 
     RenderTopButtons(
@@ -247,13 +268,33 @@ fun RenderTopButtons(
 
     fun isAvailable(action: VideoPlayerAction): Boolean =
         when (action) {
-            VideoPlayerAction.Fullscreen -> onZoomClick != null
+            VideoPlayerAction.Fullscreen -> {
-            VideoPlayerAction.Mute -> true
+                onZoomClick != null
-            VideoPlayerAction.Quality -> hasMultipleQualities
+            }
-            VideoPlayerAction.Share -> true
+
-            VideoPlayerAction.Download -> !isLive
+            VideoPlayerAction.Mute -> {
-            VideoPlayerAction.PictureInPicture -> pipSupported
+                true
-            VideoPlayerAction.Cast -> mediaData.videoUri.startsWith("http", ignoreCase = true)
+            }
+
+            VideoPlayerAction.Quality -> {
+                hasMultipleQualities
+            }
+
+            VideoPlayerAction.Share -> {
+                true
+            }
+
+            VideoPlayerAction.Download -> {
+                !isLive
+            }
+
+            VideoPlayerAction.PictureInPicture -> {
+                pipSupported
+            }
+
+            VideoPlayerAction.Cast -> {
+                BuildConfig.IS_CASTING_AVAILABLE && mediaData.videoUri.startsWith("http", ignoreCase = true)
+            }
         }
 
     val canFullscreen = onZoomClick != null

amethyst/src/main/java/com/vitorpamplona/amethyst/service/playback/composable/controls/SkipButton.kt

@@ -69,6 +69,7 @@ fun AnimatedSkipButton(
     controllerVisible: State<Boolean>,
     isForward: Boolean,
     modifier: Modifier = Modifier,
+    enabled: Boolean = true,
     onClick: () -> Unit,
 ) {
     AnimatedVisibility(
@@ -77,18 +78,20 @@ fun AnimatedSkipButton(
         enter = FadeIn,
         exit = FadeOut,
     ) {
-        SkipButton(isForward = isForward, onClick = onClick)
+        SkipButton(isForward = isForward, enabled = enabled, onClick = onClick)
     }
 }
 
 @Composable
 fun SkipButton(
     isForward: Boolean,
+    enabled: Boolean = true,
     onClick: () -> Unit,
 ) {
     val icon = if (isForward) MaterialSymbols.Forward10 else MaterialSymbols.Replay10
     val label = if (isForward) stringRes(R.string.skip_forward, SKIP_SECONDS) else stringRes(R.string.skip_back, SKIP_SECONDS)
-    IconButton(onClick = onClick, modifier = Modifier.size(48.dp)) {
+    val tint = if (enabled) Color.White else Color.White.copy(alpha = 0.38f)
-        Icon(symbol = icon, contentDescription = label, tint = Color.White, modifier = Modifier.size(32.dp))
+    IconButton(onClick = onClick, enabled = enabled, modifier = Modifier.size(48.dp)) {
+        Icon(symbol = icon, contentDescription = label, tint = tint, modifier = Modifier.size(32.dp))
     }
 }

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/cast/CastDevicePickerDialog.kt

@@ -31,7 +31,6 @@ import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.vitorpamplona.amethyst.Amethyst
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.commons.icons.symbols.MaterialSymbols
-import com.vitorpamplona.amethyst.service.cast.CastDeviceKind
 import com.vitorpamplona.amethyst.service.cast.CastRegistry
 import com.vitorpamplona.amethyst.service.cast.CastRequest
 import com.vitorpamplona.amethyst.service.cast.CastSessionState
@@ -81,16 +80,11 @@ fun CastDevicePickerDialog(
         } else {
             M3ActionSection {
                 devices.forEach { device ->
-                    val icon =
-                        when (device.kind) {
-                            CastDeviceKind.Chromecast -> MaterialSymbols.Cast
-                            CastDeviceKind.Dlna -> MaterialSymbols.CastConnected
-                        }
                     M3ActionRow(
-                        icon = icon,
+                        icon = MaterialSymbols.Cast,
                         text = device.name,
                     ) {
-                        Log.d(TAG) { "tap device=${device.kind}:${device.name}" }
+                        Log.d(TAG) { "tap device=${device.name}" }
                         // Keep discovery alive across the dialog's onDispose so the caster's
                         // session listener stays registered until the cast attempt finishes.
                         // Without this the dialog's stopDiscovery (~10ms after tap) tears the

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/settings/AppSettingsScreen.kt

@@ -56,14 +56,12 @@ import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.vitorpamplona.amethyst.BuildConfig
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.BooleanType
-import com.vitorpamplona.amethyst.model.CastProtocolType
 import com.vitorpamplona.amethyst.model.ConnectivityType
 import com.vitorpamplona.amethyst.model.FeatureSetType
 import com.vitorpamplona.amethyst.model.ProfileGalleryType
 import com.vitorpamplona.amethyst.model.ThemeType
 import com.vitorpamplona.amethyst.model.UiSettingsFlow
 import com.vitorpamplona.amethyst.model.parseBooleanType
-import com.vitorpamplona.amethyst.model.parseCastProtocolType
 import com.vitorpamplona.amethyst.model.parseConnectivityType
 import com.vitorpamplona.amethyst.model.parseFeatureSetType
 import com.vitorpamplona.amethyst.model.parseGalleryType
@@ -132,7 +130,6 @@ fun SettingsScreen(
         ShowVideoPlaybackChoice(sharedPrefs)
         AutoplayVideosChoice(sharedPrefs)
         if (BuildConfig.FLAVOR == "play") {
-            CastProtocolChoice(sharedPrefs)
         }
         ShowUrlPreviewChoice(sharedPrefs)
         ShowProfilePictureChoice(sharedPrefs)
@@ -286,27 +283,6 @@ fun ShowVideoPlaybackChoice(sharedPrefs: UiSettingsFlow) {
     }
 }
 
-@Composable
-fun CastProtocolChoice(sharedPrefs: UiSettingsFlow) {
-    val castProtocolOptions =
-        persistentListOf(
-            TitleExplainer(stringRes(CastProtocolType.BOTH.resourceId)),
-            TitleExplainer(stringRes(CastProtocolType.CHROMECAST.resourceId)),
-            TitleExplainer(stringRes(CastProtocolType.DLNA.resourceId)),
-        )
-
-    val castProtocolIndex by sharedPrefs.castProtocol.collectAsState()
-
-    SettingsRow(
-        R.string.cast_protocol_setting_title,
-        R.string.cast_protocol_setting_description,
-        castProtocolOptions,
-        castProtocolIndex.screenCode,
-    ) {
-        sharedPrefs.castProtocol.tryEmit(parseCastProtocolType(it))
-    }
-}
-
 @Composable
 fun AutoplayVideosChoice(sharedPrefs: UiSettingsFlow) {
     val autoplayIndex by sharedPrefs.automaticallyPlayVideos.collectAsState()

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/settings/VideoPlayerSettingsScreen.kt

@@ -58,6 +58,7 @@ import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.zIndex
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import com.vitorpamplona.amethyst.BuildConfig
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.commons.icons.symbols.Icon
 import com.vitorpamplona.amethyst.commons.icons.symbols.MaterialSymbols
@@ -103,7 +104,13 @@ fun VideoPlayerSettingsScreen(
 @Composable
 fun VideoPlayerSettingsContent(accountViewModel: AccountViewModel) {
     val buttonItems by accountViewModel.videoPlayerButtonItemsFlow().collectAsStateWithLifecycle()
-    var items by remember(buttonItems) { mutableStateOf(buttonItems.toList()) }
+    val displayedItems =
+        if (BuildConfig.IS_CASTING_AVAILABLE) {
+            buttonItems
+        } else {
+            buttonItems.filter { it.action != VideoPlayerAction.Cast }
+        }
+    var items by remember(displayedItems) { mutableStateOf(displayedItems.toList()) }
 
     fun save(newItems: List<VideoPlayerButtonItem>) {
         items = newItems.toMutableList()

amethyst/src/main/res/values/strings.xml

@@ -2557,16 +2557,11 @@
     <string name="playback_actions_dialog_title">Playback</string>
     <string name="video_quality_auto">Auto</string>
 
-    <!-- LAN cast (Chromecast / DLNA) feature -->
+    <!-- LAN cast (Chromecast) feature -->
     <string name="cast_to_device">Cast to device</string>
     <string name="cast_stop_casting">Stop casting</string>
     <string name="cast_to_device_dialog_title">Cast to…</string>
     <string name="cast_searching_for_devices">Searching for devices on your Wi-Fi…</string>
-    <string name="cast_protocol_setting_title">Cast protocol</string>
-    <string name="cast_protocol_setting_description">Which devices to scan for when casting videos on your Wi-Fi</string>
-    <string name="cast_protocol_both">Chromecast &amp; UPnP</string>
-    <string name="cast_protocol_chromecast">Chromecast only</string>
-    <string name="cast_protocol_dlna">UPnP / DLNA only</string>
 
     <!-- HLS multi-resolution video sharing -->
     <string name="share_hls_video">HLS Upload</string>

amethyst/src/play/java/com/vitorpamplona/amethyst/service/cast/chromecast/ChromecastCaster.kt

@@ -39,10 +39,8 @@ import com.google.android.gms.common.ConnectionResult
 import com.google.android.gms.common.GoogleApiAvailability
 import com.google.android.gms.common.images.WebImage
 import com.vitorpamplona.amethyst.service.cast.CastDevice
-import com.vitorpamplona.amethyst.service.cast.CastDeviceKind
 import com.vitorpamplona.amethyst.service.cast.CastRequest
 import com.vitorpamplona.amethyst.service.cast.CastSessionState
-import com.vitorpamplona.amethyst.service.cast.VideoCaster
 import com.vitorpamplona.amethyst.service.cast.effectiveMimeType
 import com.vitorpamplona.quartz.utils.Log
 import kotlinx.coroutines.CompletableDeferred
@@ -58,7 +56,7 @@ private const val SESSION_START_TIMEOUT_MS = 30_000L
 private const val STOP_AWAIT_TIMEOUT_MS = 5_000L
 
 /**
- * Google Cast (Chromecast) implementation of [VideoCaster].
+ * Google Cast (Chromecast) caster.
  *
  * Only present in the play flavor — the F-Droid flavor ships a no-op stub
  * with the same FQN. The class still works at runtime when Google Play
@@ -67,14 +65,12 @@ private const val STOP_AWAIT_TIMEOUT_MS = 5_000L
  */
 class ChromecastCaster(
     private val appContext: Context,
-) : VideoCaster {
+) {
-    override val kind: CastDeviceKind = CastDeviceKind.Chromecast
-
     private val devicesFlow = MutableStateFlow<List<CastDevice>>(emptyList())
-    override val devices: StateFlow<List<CastDevice>> = devicesFlow.asStateFlow()
+    val devices: StateFlow<List<CastDevice>> = devicesFlow.asStateFlow()
 
     private val sessionFlow = MutableStateFlow<CastSessionState>(CastSessionState.Idle)
-    override val sessionState: StateFlow<CastSessionState> = sessionFlow.asStateFlow()
+    val sessionState: StateFlow<CastSessionState> = sessionFlow.asStateFlow()
 
     private val main = Handler(Looper.getMainLooper())
     private var mediaRouter: MediaRouter? = null
@@ -304,7 +300,7 @@ class ChromecastCaster(
         Log.d(TAG) { "sessionListener attached (caster lifetime)" }
     }
 
-    override fun startDiscovery() {
+    fun startDiscovery() {
         Log.d(TAG) { "startDiscovery (already registered? $registered)" }
         main.post {
             if (registered) {
@@ -331,7 +327,7 @@ class ChromecastCaster(
         }
     }
 
-    override fun stopDiscovery() {
+    fun stopDiscovery() {
         Log.d(TAG) { "stopDiscovery (registered=$registered)" }
         main.post {
             if (!registered) return@post
@@ -359,14 +355,13 @@ class ChromecastCaster(
                 CastDevice(
                     id = route.id,
                     name = route.name,
-                    kind = CastDeviceKind.Chromecast,
                 )
             }
         Log.d(TAG) { "updateRoutes: count=${list.size} -> [${list.joinToString { it.name }}]" }
         devicesFlow.value = list
     }
 
-    override suspend fun cast(
+    suspend fun cast(
         device: CastDevice,
         request: CastRequest,
     ) {
@@ -481,7 +476,7 @@ class ChromecastCaster(
             .build()
     }
 
-    override suspend fun stopCasting() {
+    suspend fun stopCasting() {
         Log.d(TAG) { "stopCasting (hasClient=${currentMediaClient != null})" }
         // Await MEDIA_STOP before endCurrentSession() — racing them on the
         // same main-thread tick loses the stop on some receivers (LG webOS).

gradle/libs.versions.toml

@@ -65,12 +65,6 @@ tarsosdsp = "2.5"
 translate = "17.0.3"
 jetbrainsCompose = "1.10.3"
 unifiedpush = "3.0.10"
-jupnp = "3.0.4"
-# jUPnP 3.0.x's AndroidUpnpServiceConfiguration.createStreamServer wires in
-# JettyServletContainer at runtime — without these jUPnP throws
-# NoClassDefFoundError on startup() and DLNA discovery never runs. Stay on the
-# 9.4 line because jUPnP 3.0.x targets javax.servlet (Jetty 10+ uses jakarta).
-jetty = "9.4.57.v20241219"
 playServicesCast = "22.1.0"
 vico-charts-compose = "3.1.0"
 zelory = "3.0.1"
@@ -195,12 +189,6 @@ schnorr256k1-kmp = { group = "com.vitorpamplona.schnorr256k1", name = "schnorr25
 stream-webrtc-android = { group = "io.getstream", name = "stream-webrtc-android", version.ref = "streamWebrtcAndroid" }
 tarsosdsp = { group = "be.tarsos.dsp", name = "core", version.ref = "tarsosdsp" }
 unifiedpush = { group = "com.github.UnifiedPush", name = "android-connector", version.ref = "unifiedpush" }
-jupnp-android = { group = "org.jupnp", name = "org.jupnp.android", version.ref = "jupnp" }
-jupnp-core = { group = "org.jupnp", name = "org.jupnp", version.ref = "jupnp" }
-jupnp-support = { group = "org.jupnp", name = "org.jupnp.support", version.ref = "jupnp" }
-jetty-server = { group = "org.eclipse.jetty", name = "jetty-server", version.ref = "jetty" }
-jetty-servlet = { group = "org.eclipse.jetty", name = "jetty-servlet", version.ref = "jetty" }
-jetty-client = { group = "org.eclipse.jetty", name = "jetty-client", version.ref = "jetty" }
 play-services-cast-framework = { group = "com.google.android.gms", name = "play-services-cast-framework", version.ref = "playServicesCast" }
 vico-charts-compose = { group = "com.patrykandpatrick.vico", name = "compose", version.ref = "vico-charts-compose" }
 vico-charts-m3 = { group = "com.patrykandpatrick.vico", name = "compose-m3", version.ref = "vico-charts-compose" }