Fixed crash on Android 10 related to showing and hiding system UI when entering fullscreen. Made Platform comments the default.

app/src/main/assets/scripts/source.js

@@ -795,3 +795,99 @@ class URLSearchParams {
         return searchString;
     }
 }
+
+
+var __REGEX_SPACE_CHARACTERS = /<%= spaceCharacters %>/g;
+var __btoa_TABLE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
+function btoa(input) {
+	input = String(input);
+	if (/[^\0-\xFF]/.test(input)) {
+		// Note: no need to special-case astral symbols here, as surrogates are
+		// matched, and the input is supposed to only contain ASCII anyway.
+		error(
+			'The string to be encoded contains characters outside of the ' +
+			'Latin1 range.'
+		);
+	}
+	var padding = input.length % 3;
+	var output = '';
+	var position = -1;
+	var a;
+	var b;
+	var c;
+	var buffer;
+	// Make sure any padding is handled outside of the loop.
+	var length = input.length - padding;
+
+	while (++position < length) {
+		// Read three bytes, i.e. 24 bits.
+		a = input.charCodeAt(position) << 16;
+		b = input.charCodeAt(++position) << 8;
+		c = input.charCodeAt(++position);
+		buffer = a + b + c;
+		// Turn the 24 bits into four chunks of 6 bits each, and append the
+		// matching character for each of them to the output.
+		output += (
+			__btoa_TABLE.charAt(buffer >> 18 & 0x3F) +
+			__btoa_TABLE.charAt(buffer >> 12 & 0x3F) +
+			__btoa_TABLE.charAt(buffer >> 6 & 0x3F) +
+			__btoa_TABLE.charAt(buffer & 0x3F)
+		);
+	}
+
+	if (padding == 2) {
+		a = input.charCodeAt(position) << 8;
+		b = input.charCodeAt(++position);
+		buffer = a + b;
+		output += (
+			__btoa_TABLE.charAt(buffer >> 10) +
+			__btoa_TABLE.charAt((buffer >> 4) & 0x3F) +
+			__btoa_TABLE.charAt((buffer << 2) & 0x3F) +
+			'='
+		);
+	} else if (padding == 1) {
+		buffer = input.charCodeAt(position);
+		output += (
+			__btoa_TABLE.charAt(buffer >> 2) +
+			__btoa_TABLE.charAt((buffer << 4) & 0x3F) +
+			'=='
+		);
+	}
+
+	return output;
+};
+function atob(input) {
+	input = String(input)
+		.replace(__REGEX_SPACE_CHARACTERS, '');
+	var length = input.length;
+	if (length % 4 == 0) {
+		input = input.replace(/==?$/, '');
+		length = input.length;
+	}
+	if (
+		length % 4 == 1 ||
+		// http://whatwg.org/C#alphanumeric-ascii-characters
+		/[^+a-zA-Z0-9/]/.test(input)
+	) {
+		error(
+			'Invalid character: the string to be decoded is not correctly encoded.'
+		);
+	}
+	var bitCounter = 0;
+	var bitStorage;
+	var buffer;
+	var output = '';
+	var position = -1;
+	while (++position < length) {
+		buffer = __btoa_TABLE.indexOf(input.charAt(position));
+		bitStorage = bitCounter % 4 ? bitStorage * 64 + buffer : buffer;
+		// Unless this is the first of a group of 4 characters…
+		if (bitCounter++ % 4) {
+			// …convert the first 8 bits to a single ASCII character.
+			output += String.fromCharCode(
+				0xFF & bitStorage >> (-2 * bitCounter & 6)
+			);
+		}
+	}
+	return output;
+};

app/src/main/java/com/futo/platformplayer/AdvancedOrientationListener.kt

@@ -77,10 +77,14 @@ class AdvancedOrientationListener(private val activity: Activity, private val li
                             lastStableOrientation = newOrientation
 
                             lifecycleScope.launch(Dispatchers.Main) {
-                                delay(stabilityThresholdTime)
-                                if (newOrientation == lastStableOrientation) {
-                                    lastOrientation = newOrientation
-                                    onOrientationChanged.emit(newOrientation)
+                                try {
+                                    delay(stabilityThresholdTime)
+                                    if (newOrientation == lastStableOrientation) {
+                                        lastOrientation = newOrientation
+                                        onOrientationChanged.emit(newOrientation)
+                                    }
+                                } catch (e: Throwable) {
+                                    Logger.i(TAG, "Failed to trigger onOrientationChanged", e)
                                 }
                             }
                         }
@@ -111,4 +115,8 @@ class AdvancedOrientationListener(private val activity: Activity, private val li
     fun stopListening() {
         sensorManager.unregisterListener(sensorListener)
     }
+
+    companion object {
+        private val TAG = "AdvancedOrientationListener"
+    }
 }

app/src/main/java/com/futo/platformplayer/Settings.kt

@@ -478,7 +478,6 @@ class Settings : FragmentedStorageFileJson() {
         var preferWebmAudio: Boolean = false;
 
         @FormField(R.string.allow_under_cutout, FieldForm.TOGGLE, R.string.allow_under_cutout_description, 16)
-        @FormFieldWarning(R.string.changing_this_field_requires_restart)
         var allowVideoToGoUnderCutout: Boolean = true;
     }
 
@@ -488,7 +487,7 @@ class Settings : FragmentedStorageFileJson() {
     class CommentSettings {
         @FormField(R.string.default_comment_section, FieldForm.DROPDOWN, -1, 0)
         @DropdownFieldOptionsId(R.array.comment_sections)
-        var defaultCommentSection: Int = 0;
+        var defaultCommentSection: Int = 1;
 
         @FormField(R.string.bad_reputation_comments_fading, FieldForm.TOGGLE, R.string.bad_reputation_comments_fading_description, 0)
         var badReputationCommentsFading: Boolean = true;

app/src/main/java/com/futo/platformplayer/SimpleOrientationListener.kt

@@ -5,6 +5,7 @@ import android.content.pm.ActivityInfo
 import android.hardware.SensorManager
 import android.view.OrientationEventListener
 import com.futo.platformplayer.constructs.Event1
+import com.futo.platformplayer.logging.Logger
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
@@ -34,10 +35,14 @@ class SimpleOrientationListener(
                 lastStableOrientation = newOrientation
 
                 lifecycleScope.launch(Dispatchers.Main) {
-                    delay(stabilityThresholdTime)
-                    if (newOrientation == lastStableOrientation) {
-                        lastOrientation = newOrientation
-                        onOrientationChanged.emit(newOrientation)
+                    try {
+                        delay(stabilityThresholdTime)
+                        if (newOrientation == lastStableOrientation) {
+                            lastOrientation = newOrientation
+                            onOrientationChanged.emit(newOrientation)
+                        }
+                    } catch (e: Throwable) {
+                        Logger.i(TAG, "Failed to trigger onOrientationChanged", e)
                     }
                 }
             }
@@ -52,4 +57,8 @@ class SimpleOrientationListener(
     fun stopListening() {
         orientationListener.disable()
     }
+
+    companion object {
+        private val TAG = "SimpleOrientationListener"
+    }
 }

app/src/main/java/com/futo/platformplayer/Utility.kt

@@ -147,8 +147,6 @@ fun InputStream.copyToOutputStream(inputStreamLength: Long, outputStream: Output
 @Suppress("DEPRECATION")
 fun Activity.setNavigationBarColorAndIcons() {
     window.navigationBarColor = ContextCompat.getColor(this, android.R.color.black);
-    if (Settings.instance.playback.allowVideoToGoUnderCutout)
-        window.attributes.layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES
 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
         window.insetsController?.setSystemBarsAppearance(0, WindowInsetsController.APPEARANCE_LIGHT_NAVIGATION_BARS);

app/src/main/java/com/futo/platformplayer/activities/MainActivity.kt

@@ -7,12 +7,14 @@ import android.content.Intent.FLAG_ACTIVITY_NEW_TASK
 import android.content.pm.PackageManager
 import android.content.res.Configuration
 import android.net.Uri
+import android.net.wifi.WifiManager
 import android.os.Bundle
 import android.os.StrictMode
 import android.os.StrictMode.VmPolicy
 import android.util.Log
 import android.util.TypedValue
 import android.view.View
+import android.view.WindowManager
 import android.widget.FrameLayout
 import android.widget.ImageView
 import androidx.activity.result.ActivityResult
@@ -252,7 +254,8 @@ class MainActivity : AppCompatActivity, IWithResultLauncher {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         setNavigationBarColorAndIcons();
-
+        if (Settings.instance.playback.allowVideoToGoUnderCutout)
+            window.attributes.layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES
 
         runBlocking {
             StatePlatform.instance.updateAvailableClients(this@MainActivity);
@@ -514,7 +517,6 @@ class MainActivity : AppCompatActivity, IWithResultLauncher {
         }
     }
 
-
     /*
     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
         super.onRequestPermissionsResult(requestCode, permissions, grantResults);

app/src/main/java/com/futo/platformplayer/api/media/platforms/js/models/JSArticle.kt

@@ -0,0 +1,78 @@
+package com.futo.platformplayer.api.media.platforms.js.models
+
+import com.caoccao.javet.values.reference.V8ValueObject
+import com.futo.platformplayer.api.media.IPluginSourced
+import com.futo.platformplayer.api.media.models.Thumbnails
+import com.futo.platformplayer.api.media.models.contents.ContentType
+import com.futo.platformplayer.api.media.models.post.TextType
+import com.futo.platformplayer.api.media.platforms.js.SourcePluginConfig
+import com.futo.platformplayer.getOrDefault
+import com.futo.platformplayer.getOrThrow
+import com.futo.platformplayer.getOrThrowNullableList
+import kotlin.streams.toList
+
+open class JSArticle : JSContent, IPluginSourced {
+    final override val contentType: ContentType get() = ContentType.POST;
+
+    val summary: String;
+    val thumbnails: Thumbnails?;
+    val segments: List<IJSArticleSegment>;
+
+    constructor(config: SourcePluginConfig, obj: V8ValueObject): super(config, obj) {
+        val contextName = "PlatformPost";
+
+        summary = _content.getOrThrow(config, "summary", contextName);
+        if(_content.has("thumbnails"))
+            thumbnails = Thumbnails.fromV8(config, _content.getOrThrow(config, "thumbnails", contextName));
+        else
+            thumbnails = null;
+
+
+        segments = (obj.getOrThrowNullableList<V8ValueObject>(config, "segments", contextName)
+            ?.map { fromV8Segment(config, it) }
+            ?.filterNotNull() ?: listOf());
+    }
+
+
+    companion object {
+        fun fromV8Segment(config: SourcePluginConfig, obj: V8ValueObject): IJSArticleSegment? {
+            if(!obj.has("type"))
+                throw IllegalArgumentException("Object missing type field");
+            return when(obj.getOrThrow<SegmentType>(config, "type", "JSArticle.Segment")) {
+                SegmentType.TEXT -> JSTextSegment(config, obj);
+                SegmentType.IMAGES -> JSImagesSegment(config, obj);
+                else -> null;
+            }
+        }
+    }
+}
+
+enum class SegmentType(i: Int) {
+    UNKNOWN(0),
+    TEXT(1),
+    IMAGES(2)
+}
+
+interface IJSArticleSegment {
+    val type: SegmentType;
+}
+class JSTextSegment: IJSArticleSegment {
+    override val type = SegmentType.TEXT;
+    val textType: TextType;
+    val content: String;
+
+    constructor(config: SourcePluginConfig, obj: V8ValueObject) {
+        val contextName = "JSTextSegment";
+        textType = TextType.fromInt((obj.getOrDefault<Int>(config, "textType", contextName, null) ?: 0));
+        content = obj.getOrDefault(config, "content", contextName, "") ?: "";
+    }
+}
+class JSImagesSegment: IJSArticleSegment {
+    override val type = SegmentType.IMAGES;
+    val images: List<String>;
+
+    constructor(config: SourcePluginConfig, obj: V8ValueObject) {
+        val contextName = "JSTextSegment";
+        images = obj.getOrThrowNullableList<String>(config, "images", contextName) ?: listOf();
+    }
+}

app/src/main/java/com/futo/platformplayer/engine/packages/PackageDOMParser.kt

@@ -68,6 +68,10 @@ class PackageDOMParser : V8Package {
             return result;
         }
         @V8Property
+        fun parentElement(): DOMNode? {
+            return parentNode();
+        }
+        @V8Property
         fun attributes(): Map<String, String> = _element.attributes().associate { Pair(it.key, it.value) }
         @V8Property
         fun innerHTML(): String = _element.html();
@@ -76,6 +80,8 @@ class PackageDOMParser : V8Package {
         @V8Property
         fun textContent(): String = _element.text();
         @V8Property
+        fun tagName(): String = _element.tagName().uppercase();
+        @V8Property
         fun text(): String = _element.text().ifEmpty { data() };
         @V8Property
         fun data(): String = _element.data();

app/src/main/java/com/futo/platformplayer/engine/packages/PackageHttp.kt

@@ -99,6 +99,8 @@ class PackageHttp: V8Package {
 
         if(body is V8ValueString)
             return client.POST(url, body.value, headers, if(useByteResponse) ReturnType.BYTES else ReturnType.STRING);
+        else if(body is String)
+            return client.POST(url, body, headers, if(useByteResponse) ReturnType.BYTES else ReturnType.STRING);
         else if(body is V8ValueTypedArray)
             return client.POST(url, body.toBytes(), headers, if(useByteResponse) ReturnType.BYTES else ReturnType.STRING);
         else if(body is ByteArray)

app/src/main/java/com/futo/platformplayer/fragment/mainactivity/main/VideoDetailFragment.kt

@@ -2,6 +2,7 @@ package com.futo.platformplayer.fragment.mainactivity.main
 
 import android.content.pm.ActivityInfo
 import android.content.res.Configuration
+import android.os.Build
 import android.os.Bundle
 import android.os.Handler
 import android.util.Log
@@ -10,6 +11,7 @@ import android.view.View
 import android.view.ViewGroup
 import android.view.WindowInsets
 import android.view.WindowInsetsController
+import android.view.WindowManager
 import androidx.constraintlayout.motion.widget.MotionLayout
 import androidx.core.view.WindowCompat
 import androidx.lifecycle.lifecycleScope
@@ -426,22 +428,42 @@ class VideoDetailFragment : MainFragment {
         onMaximized.clear();
     }
 
-
     private fun hideSystemUI() {
-        WindowCompat.setDecorFitsSystemWindows(requireActivity().window, false)
-        activity?.window?.insetsController?.let { controller ->
-            controller.hide(WindowInsets.Type.statusBars())
-            controller.hide(WindowInsets.Type.systemBars())
-            controller.systemBarsBehavior = WindowInsetsController.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+            WindowCompat.setDecorFitsSystemWindows(requireActivity().window, false)
+            activity?.window?.insetsController?.let { controller ->
+                controller.hide(WindowInsets.Type.statusBars())
+                controller.hide(WindowInsets.Type.systemBars())
+                controller.systemBarsBehavior = WindowInsetsController.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
+            }
+        } else {
+            @Suppress("DEPRECATION")
+            activity?.window?.setFlags(
+                WindowManager.LayoutParams.FLAG_FULLSCREEN,
+                WindowManager.LayoutParams.FLAG_FULLSCREEN
+            )
+            @Suppress("DEPRECATION")
+            activity?.window?.decorView?.systemUiVisibility = (
+                    View.SYSTEM_UI_FLAG_FULLSCREEN
+                            or View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
+                            or View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
+                    )
         }
     }
 
     private fun showSystemUI() {
-        WindowCompat.setDecorFitsSystemWindows(requireActivity().window, true)
-        activity?.window?.insetsController?.let { controller ->
-            controller.show(WindowInsets.Type.statusBars())
-            controller.show(WindowInsets.Type.systemBars())
-            controller.systemBarsBehavior = WindowInsetsController.BEHAVIOR_DEFAULT
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+            WindowCompat.setDecorFitsSystemWindows(requireActivity().window, true)
+            activity?.window?.insetsController?.let { controller ->
+                controller.show(WindowInsets.Type.statusBars())
+                controller.show(WindowInsets.Type.systemBars())
+                controller.systemBarsBehavior = WindowInsetsController.BEHAVIOR_DEFAULT
+            }
+        } else {
+            @Suppress("DEPRECATION")
+            activity?.window?.clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN)
+            @Suppress("DEPRECATION")
+            activity?.window?.decorView?.systemUiVisibility = View.SYSTEM_UI_FLAG_VISIBLE
         }
     }
 

app/src/main/java/com/futo/platformplayer/mdns/MDNSListener.kt

@@ -18,9 +18,9 @@ class MDNSListener {
     }
 
     private val _lockObject = ReentrantLock()
-    private var _receiver4: DatagramSocket? = null
-    private var _receiver6: DatagramSocket? = null
-    private val _senders = mutableListOf<DatagramSocket>()
+    private var _receiver4: MulticastSocket? = null
+    private var _receiver6: MulticastSocket? = null
+    private val _senders = mutableListOf<MulticastSocket>()
     private val _nicMonitor = NICMonitor()
     private val _serviceRecordAggregator = ServiceRecordAggregator()
     private var _started = false
@@ -53,13 +53,13 @@ class MDNSListener {
 
         Logger.i(TAG, "Starting")
         _lockObject.withLock {
-            val receiver4 = DatagramSocket(null).apply {
+            val receiver4 = MulticastSocket(null).apply {
                 reuseAddress = true
                 bind(InetSocketAddress(InetAddress.getByName("0.0.0.0"), MulticastPort))
             }
             _receiver4 = receiver4
 
-            val receiver6 = DatagramSocket(null).apply {
+            val receiver6 = MulticastSocket(null).apply {
                 reuseAddress = true
                 bind(InetSocketAddress(InetAddress.getByName("::"), MulticastPort))
             }
@@ -166,6 +166,11 @@ class MDNSListener {
                 try {
                     when (address) {
                         is Inet4Address -> {
+                            _receiver4?.let { receiver4 ->
+                                //receiver4.setOption(StandardSocketOptions.IP_MULTICAST_IF, NetworkInterface.getByInetAddress(address))
+                                receiver4.joinGroup(InetSocketAddress(MulticastAddressIPv4, MulticastPort), NetworkInterface.getByInetAddress(address))
+                            }
+
                             val sender = MulticastSocket(null).apply {
                                 reuseAddress = true
                                 bind(InetSocketAddress(address, MulticastPort))
@@ -175,6 +180,11 @@ class MDNSListener {
                         }
 
                         is Inet6Address -> {
+                            _receiver6?.let { receiver6 ->
+                                //receiver6.setOption(StandardSocketOptions.IP_MULTICAST_IF, NetworkInterface.getByInetAddress(address))
+                                receiver6.joinGroup(InetSocketAddress(MulticastAddressIPv6, MulticastPort), NetworkInterface.getByInetAddress(address))
+                            }
+
                             val sender = MulticastSocket(null).apply {
                                 reuseAddress = true
                                 bind(InetSocketAddress(address, MulticastPort))
@@ -222,7 +232,7 @@ class MDNSListener {
     private fun receiveLoop(client: DatagramSocket) {
         Logger.i(TAG, "Started receive loop")
 
-        val buffer = ByteArray(1024)
+        val buffer = ByteArray(8972)
         val packet = DatagramPacket(buffer, buffer.size)
         while (_started) {
             try {

app/src/main/java/com/futo/platformplayer/receivers/MediaControlReceiver.kt

@@ -10,7 +10,6 @@ import com.futo.platformplayer.constructs.Event1
 
 
 class MediaControlReceiver : BroadcastReceiver() {
-
     override fun onReceive(context: Context?, intent: Intent?) {
         val act = intent?.getStringExtra(EXTRA_MEDIA_ACTION);
         Logger.i(TAG, "Received MediaControl Event $act");

app/src/main/java/com/futo/platformplayer/services/MediaPlaybackService.kt

@@ -55,9 +55,15 @@ class MediaPlaybackService : Service() {
     private var _notificationChannel: NotificationChannel? = null;
     private var _mediaSession: MediaSessionCompat? = null;
     private var _hasFocus: Boolean = false;
+    private var _isTransientLoss: Boolean = false;
     private var _focusRequest: AudioFocusRequest? = null;
     private var _audioFocusLossTime_ms: Long? = null
     private var _playbackState = PlaybackStateCompat.STATE_NONE;
+    private var _lastAudioFocusAttempt_ms: Long? = null
+    private val isPlaying get() = _playbackState != PlaybackStateCompat.STATE_PAUSED &&
+        _playbackState != PlaybackStateCompat.STATE_STOPPED &&
+        _playbackState != PlaybackStateCompat.STATE_NONE &&
+        _playbackState != PlaybackStateCompat.STATE_ERROR
 
     override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
         Logger.v(TAG, "onStartCommand");
@@ -159,12 +165,7 @@ class MediaPlaybackService : Service() {
         Logger.v(TAG, "closeMediaSession");
         stopForeground(STOP_FOREGROUND_REMOVE);
 
-        val focusRequest = _focusRequest;
-        if (focusRequest != null) {
-            _audioManager?.abandonAudioFocusRequest(focusRequest);
-            _focusRequest = null;
-        }
-        _hasFocus = false;
+        abandonAudioFocus()
 
         val notifManager = _notificationManager;
         Logger.i(TAG, "Cancelling playback notification (notifManager: ${notifManager != null})");
@@ -335,29 +336,73 @@ class MediaPlaybackService : Service() {
                 .setState(state, pos, 1f, SystemClock.elapsedRealtime())
                 .build());
 
-        if(_focusRequest == null)
-            setAudioFocus();
-
         _playbackState = state;
+        try {
+            setAudioFocus()
+        } catch (e: Throwable) {
+            Logger.e(TAG, "Failed to set audio focus", e)
+        }
     }
 
     //TODO: (TBD) This code probably more fitting inside FutoVideoPlayer, as this service is generally only used for global events
     private fun setAudioFocus() {
-        Log.i(TAG, "Requested audio focus.");
+        if (!isPlaying) {
+            return
+        }
 
-        val focusRequest = AudioFocusRequest.Builder(AudioManager.AUDIOFOCUS_GAIN)
-            .setAcceptsDelayedFocusGain(true)
-            .setOnAudioFocusChangeListener(_audioFocusChangeListener)
-            .build()
+        if (_hasFocus || _isTransientLoss) {
+            return;
+        }
 
-        _focusRequest = focusRequest;
-        val result = _audioManager?.requestAudioFocus(focusRequest)
+        val now = System.currentTimeMillis()
+        val lastAudioFocusAttempt_ms = _lastAudioFocusAttempt_ms
+        if (lastAudioFocusAttempt_ms == null || now - lastAudioFocusAttempt_ms > 1000) {
+            _lastAudioFocusAttempt_ms = now
+        } else {
+            Log.v(TAG, "Skipped trying to get audio focus because gaining audio focus was recently attempted.");
+            return
+        }
+
+        if (_focusRequest == null) {
+            val focusRequest = AudioFocusRequest.Builder(AudioManager.AUDIOFOCUS_GAIN)
+                .setAcceptsDelayedFocusGain(true)
+                .setOnAudioFocusChangeListener(_audioFocusChangeListener)
+                .build()
+
+            _focusRequest = focusRequest;
+            Log.i(TAG, "Created audio focus request.");
+        }
+
+        Log.i(TAG, "Requesting audio focus.");
+
+        val result = _audioManager?.requestAudioFocus(_focusRequest!!)
         Log.i(TAG, "Audio focus request result $result");
         if (result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {
-            //TODO: Handle when not possible to get audio focus
-            _hasFocus = true;
+            _hasFocus = true
+            _isTransientLoss = false
             Log.i(TAG, "Audio focus received");
+        } else if (result == AudioManager.AUDIOFOCUS_REQUEST_DELAYED) {
+            _hasFocus = false
+            _isTransientLoss = false
+            Log.i(TAG, "Audio focus delayed, waiting for focus")
+        } else {
+            _hasFocus = false
+            _isTransientLoss = false
+            Log.i(TAG, "Audio focus not granted, retrying later")
         }
+
+        Log.i(TAG, "Audio focus requested.");
+    }
+
+    private fun abandonAudioFocus() {
+        val focusRequest = _focusRequest;
+        if (focusRequest != null) {
+            Logger.i(TAG, "Audio focus abandoned")
+            _audioManager?.abandonAudioFocusRequest(focusRequest);
+            _focusRequest = null;
+        }
+        _hasFocus = false;
+        _isTransientLoss = false;
     }
 
     private val _audioFocusChangeListener =
@@ -365,9 +410,8 @@ class MediaPlaybackService : Service() {
             try {
                 when (focusChange) {
                     AudioManager.AUDIOFOCUS_GAIN -> {
-                        //Do not start playing on gaining audo focus
-                        //MediaControlReceiver.onPlayReceived.emit();
                         _hasFocus = true;
+                        _isTransientLoss = false;
                         Log.i(TAG, "Audio focus gained (restartPlaybackAfterLoss = ${Settings.instance.playback.restartPlaybackAfterLoss}, _audioFocusLossTime_ms = $_audioFocusLossTime_ms)");
 
                         if (Settings.instance.playback.restartPlaybackAfterLoss == 1) {
@@ -385,40 +429,28 @@ class MediaPlaybackService : Service() {
                         }
                     }
                     AudioManager.AUDIOFOCUS_LOSS_TRANSIENT -> {
-                        MediaControlReceiver.onPauseReceived.emit();
-                        if (_playbackState != PlaybackStateCompat.STATE_PAUSED &&
-                            _playbackState != PlaybackStateCompat.STATE_STOPPED &&
-                            _playbackState != PlaybackStateCompat.STATE_NONE &&
-                            _playbackState != PlaybackStateCompat.STATE_ERROR) {
-                            _audioFocusLossTime_ms = System.currentTimeMillis()
-                        }
-
-                        Log.i(TAG, "Audio focus transient loss");
-                    }
-                    AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK -> {
-                        Log.i(TAG, "Audio focus transient loss, can duck");
-                    }
-                    AudioManager.AUDIOFOCUS_LOSS -> {
-                        if (_playbackState != PlaybackStateCompat.STATE_PAUSED &&
-                            _playbackState != PlaybackStateCompat.STATE_STOPPED &&
-                            _playbackState != PlaybackStateCompat.STATE_NONE &&
-                            _playbackState != PlaybackStateCompat.STATE_ERROR) {
+                        if (isPlaying) {
                             _audioFocusLossTime_ms = System.currentTimeMillis()
                         }
 
                         _hasFocus = false;
+                        _isTransientLoss = true;
                         MediaControlReceiver.onPauseReceived.emit();
-                        Log.i(TAG, "Audio focus lost");
-
-                        val activityManager = getSystemService(Context.ACTIVITY_SERVICE) as ActivityManager
-                        val runningAppProcesses = activityManager.runningAppProcesses
-                        for (processInfo in runningAppProcesses) {
-                            // Check the importance of the running app process
-                            if (processInfo.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
-                                // This app is in the foreground, which might have caused the loss of audio focus
-                                Log.i("AudioFocus", "App ${processInfo.processName} might have caused the loss of audio focus")
-                            }
+                        Log.i(TAG, "Audio focus transient loss (_audioFocusLossTime_ms = ${_audioFocusLossTime_ms})");
+                    }
+                    AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK -> {
+                        Log.i(TAG, "Audio focus transient loss, can duck");
+                        _hasFocus = true;
+                        _isTransientLoss = true;
+                    }
+                    AudioManager.AUDIOFOCUS_LOSS -> {
+                        if (isPlaying) {
+                            _audioFocusLossTime_ms = System.currentTimeMillis()
                         }
+
+                        MediaControlReceiver.onPauseReceived.emit();
+                        abandonAudioFocus();
+                        Log.i(TAG, "Audio focus lost");
                     }
                 }
             } catch(ex: Throwable) {

app/src/main/java/com/futo/platformplayer/views/fields/Field.kt

@@ -13,6 +13,10 @@ annotation class FormField(val title: Int, val type: String, val subtitle: Int =
 @Retention(AnnotationRetention.RUNTIME)
 annotation class FormFieldWarning(val messageRes: Int)
 
+@Target(AnnotationTarget.FIELD, AnnotationTarget.PROPERTY)
+@Retention(AnnotationRetention.RUNTIME)
+annotation class FormFieldHint(val messageRes: Int)
+
 interface IField {
     var descriptor: FormField?;
     val obj : Any?;

app/src/main/java/com/futo/platformplayer/views/fields/FieldForm.kt

@@ -293,6 +293,12 @@ class FieldForm : LinearLayout {
                                     }, UIDialogs.ActionStyle.PRIMARY));
                         }
                     }
+                    val hint = propertyMap[field.field]?.findAnnotation<FormFieldHint>();
+                    if(hint != null){
+                        field.onChanged.subscribe { f, value, oldValue ->
+                            UIDialogs.appToast(context.getString(hint.messageRes), false);
+                        }
+                    }
                 }
             }
 

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

@@ -378,7 +378,7 @@
     <string name="prefer_webm_audio">Prefer Webm Audio Codecs</string>
     <string name="prefer_webm_audio_description">If player should prefer Webm codecs (opus) over mp4 codecs (AAC), may result in worse compatibility.</string>
     <string name="allow_under_cutout">Allow video under cutout</string>
-    <string name="allow_under_cutout_description">Allow video to go underneath the screen cutout in full-screen.</string>
+    <string name="allow_under_cutout_description">Allow video to go underneath the screen cutout in full-screen.\nMay require restart</string>
     <string name="allow_full_screen_portrait">Allow fullscreen portrait</string>
     <string name="background_switch_audio">Switch to Audio in Background</string>
     <string name="background_switch_audio_description">Optimize bandwidth usage by switching to audio-only stream in background if available, may cause stutter</string>