Guard call permission results and release video targets idempotently

tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/CallScreen.kt

@@ -61,9 +61,6 @@ import androidx.compose.ui.platform.LocalDensity
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.core.content.ContextCompat
-import androidx.core.view.WindowCompat
-import androidx.core.view.WindowInsetsCompat
-import androidx.core.view.WindowInsetsControllerCompat
 import com.utun.chat.data.AudioRoute
 import com.utun.chat.data.LogManager
 import com.utun.chat.viewmodel.ChatViewModel
@@ -147,6 +144,9 @@ private fun CallVideoButton(video: CallVideoEngine, showLabel: Boolean, onOption
     )
 }
 
+/** Полноэкранный звонок: сигналинг/аудио/видео принадлежат контроллеру и сервису, minimize не завершает звонок.
+ * При ACTIVE proximity блокирует ввод только у разговорного динамика без видео; видеопанели сохраняют TextureView при смене геометрии.
+ * Ориентация окна фиксируется на время экрана и восстанавливается при выходе. */
 @Composable
 @OptIn(ExperimentalLayoutApi::class)
 fun CallScreen(
@@ -228,22 +228,30 @@ fun CallScreen(
     // Геометрию видео меняет TextureView; Activity сохраняет ориентацию окна звонка.
     DisposableEffect(context) {
         val activity = context.findActivity(); val previous = activity?.requestedOrientation
-        activity?.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_LOCKED
-        LogManager.addLog("INFO", "call", "call screen orientation locked; video rotates independently")
+        try {
+            activity?.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_LOCKED
+            LogManager.addLog("INFO", "call", "call screen orientation locked; video rotates independently")
+        } catch (e: Exception) { LogManager.addLog("ERROR", "call", "Cannot lock call orientation: $e") }
         onDispose {
             if (activity != null && previous != null && activity.requestedOrientation != previous) {
-                activity.requestedOrientation = previous
-                LogManager.addLog("INFO", "call", "video screen orientation restored=$previous")
+                try {
+                    activity.requestedOrientation = previous
+                    LogManager.addLog("INFO", "call", "video screen orientation restored=$previous")
+                } catch (e: Exception) { LogManager.addLog("ERROR", "call", "Cannot restore call orientation=$previous: $e") }
             }
         }
     }
     val hasBtPermission = Build.VERSION.SDK_INT < Build.VERSION_CODES.S ||
         ContextCompat.checkSelfPermission(context, Manifest.permission.BLUETOOTH_CONNECT) ==
         PackageManager.PERMISSION_GRANTED
+    var bluetoothCallId by rememberSaveable { mutableStateOf<Long?>(null) }
     val btPermissionLauncher = rememberLauncherForActivityResult(
         ActivityResultContracts.RequestPermission()
     ) { granted ->
-        if (granted) viewModel.setAudioRoute(AudioRoute.HEADSET)
+        val requestedCall = bluetoothCallId; bluetoothCallId = null
+        LogManager.addLog(if (granted) "INFO" else "WARN", "call", "Bluetooth permission=$granted call=$requestedCall")
+        if (granted && requestedCall != null && st?.callId == requestedCall && phase == CallPhase.ACTIVE)
+            viewModel.setAudioRoute(AudioRoute.HEADSET)
     }
 
     /* Пока телефон у уха (proximity) — глотаем Back, чтобы не свернуть звонок. */
@@ -252,21 +260,7 @@ fun CallScreen(
 
     /* При блокировке скрываем системные панели (иначе статус-бар светится поверх оверлея). */
     val hideBars = locked || (viewingVideo && !controlsVisible)
-    DisposableEffect(hideBars) {
-        val act = context.findActivity()
-        val controller = act?.let { WindowCompat.getInsetsController(it.window, it.window.decorView) }
-        if (hideBars) {
-            controller?.systemBarsBehavior = WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
-            controller?.hide(WindowInsetsCompat.Type.systemBars())
-            LogManager.addLog("DEBUG", "CallScreen", "system bars hidden locked=$locked receiving=$receiving")
-        }
-        onDispose {
-            if (hideBars) {
-                controller?.show(WindowInsetsCompat.Type.systemBars())
-                LogManager.addLog("DEBUG", "CallScreen", "system bars restored")
-            }
-        }
-    }
+    if (hideBars) ViewerFullscreenWindow("call id=${st?.callId}")
 
     Box(
         modifier = Modifier.fillMaxSize().background(Color(0xFF0F1B22)).onGloballyPositioned { rootPosition = it.positionInRoot() }
@@ -302,7 +296,8 @@ fun CallScreen(
             if (!hasVideo) Box(Modifier.fillMaxWidth().height(96.dp),
                 contentAlignment = Alignment.Center) {
                 Box(Modifier.size(96.dp).background(Color(0xFF1F6FEB), CircleShape), contentAlignment = Alignment.Center) {
-                    Text(name.take(1).uppercase(), fontSize = 40.sp, color = Color.White, fontWeight = FontWeight.Bold)
+                    Text(if (name.isEmpty()) "" else String(Character.toChars(name.codePointAt(0))).uppercase(),
+                        fontSize = 40.sp, color = Color.White, fontWeight = FontWeight.Bold)
                 }
             }
             Spacer(Modifier.height(16.dp))
@@ -386,7 +381,12 @@ fun CallScreen(
                                     if (hasBtPermission) {
                                         viewModel.setAudioRoute(AudioRoute.HEADSET)
                                     } else {
-                                        btPermissionLauncher.launch(Manifest.permission.BLUETOOTH_CONNECT)
+                                        bluetoothCallId = st?.callId
+                                        try { btPermissionLauncher.launch(Manifest.permission.BLUETOOTH_CONNECT) } catch (e: Exception) {
+                                            bluetoothCallId = null
+                                            LogManager.addLog("ERROR", "call", "Cannot request Bluetooth permission: $e")
+                                            Toast.makeText(context, R.string.media_audio_failed, Toast.LENGTH_LONG).show()
+                                        }
                                     }
                                 }
                             )
@@ -429,7 +429,11 @@ fun CallScreen(
                                 videoOptionsRequested = true; controlsVisible = true
                             }, requestPermission = {
                                 permissionVideo = engine
-                                cameraPermissionLauncher.launch(Manifest.permission.CAMERA)
+                                try { cameraPermissionLauncher.launch(Manifest.permission.CAMERA) } catch (e: Exception) {
+                                    permissionVideo = null
+                                    LogManager.addLog("ERROR", "call", "Cannot request call camera permission: $e")
+                                    Toast.makeText(context, R.string.camera_unavailable, Toast.LENGTH_LONG).show()
+                                }
                             })
                         }
                     }

tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/CallVideoPanel.kt

@@ -33,6 +33,7 @@ import com.utun.chat.data.CallVideoBitrateRange
 import com.utun.chat.data.CallVideoEngine
 import com.utun.chat.data.CallVideoFormat
 import com.utun.chat.data.StreamVideoCodec
+import com.utun.chat.data.StreamPreviewTarget
 import com.utun.chat.R
 
 internal enum class CallVideoOption { CAMERA, CODEC, BITRATE, RESOLUTION }
@@ -185,7 +186,7 @@ internal fun CallVideoStage(video: CallVideoEngine, expanded: CallVideoSource?,
                 "frame=${frameWidth.value}x${frameHeight.value}dp; preview fits available space")
         }
         // Обе поверхности живут до конца видеосессии, даже пока аватар скрывает пустой слот.
-        for (source in CallVideoSource.entries) key(source) {
+        for (source in CallVideoSource.entries) key(video, source) {
             val large = expanded == source
             val index = if (source == CallVideoSource.REMOTE && localVisible) 1 else 0
             val x = if (expanded != null) with(density) { maxWidth.toPx() } - widthPx - gapPx
@@ -246,6 +247,8 @@ private fun CallVideoPlayback(video: CallVideoEngine, onTap: () -> Unit, modifie
 
 private class CallVideoTexture(context: Context, private val video: CallVideoEngine) : TextureView(context), ViewTreeObserver.OnPreDrawListener {
     private var attached: Surface? = null
+    private var attachedTexture: SurfaceTexture? = null
+    private val ownedTextures = java.util.Collections.newSetFromMap(java.util.IdentityHashMap<SurfaceTexture, Boolean>())
     private var closed = false
     private var format: CallVideoFormat? = null
     private var large = false
@@ -263,13 +266,24 @@ private class CallVideoTexture(context: Context, private val video: CallVideoEng
         isOpaque = false
         surfaceTextureListener = object : SurfaceTextureListener {
             override fun onSurfaceTextureAvailable(texture: SurfaceTexture, width: Int, height: Int) {
-                if (closed) return
-                val surface = Surface(texture); attached = surface
-                // RX worker освобождает Surface/texture только после остановки MediaCodec.
-                video.surface(surface) { surface.release(); texture.release() }; fit()
+                try {
+                    val target = StreamPreviewTarget(texture)
+                    ownedTextures.add(texture)
+                    if (closed) { target.release(); return }
+                    closeOutput()
+                    attached = target.surface; attachedTexture = texture
+                    // RX worker передаёт Surface/texture в идемпотентный cleanup после остановки decoder.
+                    video.surface(target.surface) { target.release() }; fit()
+                } catch (e: Exception) {
+                    LogManager.addLog("ERROR", "call", "video UI surface attach failed texture=${System.identityHashCode(texture)}: $e")
+                }
             }
             override fun onSurfaceTextureSizeChanged(texture: SurfaceTexture, width: Int, height: Int) { fit() }
-            override fun onSurfaceTextureDestroyed(texture: SurfaceTexture): Boolean { closeOutput(); return false }
+            override fun onSurfaceTextureDestroyed(texture: SurfaceTexture): Boolean {
+                if (!ownedTextures.remove(texture)) return true
+                if (attachedTexture === texture) closeOutput()
+                return false
+            }
             override fun onSurfaceTextureUpdated(texture: SurfaceTexture) {
                 updateAt = System.nanoTime(); updates++
             }
@@ -320,7 +334,7 @@ private class CallVideoTexture(context: Context, private val video: CallVideoEng
         })
         com.utun.chat.data.LogManager.addLog("DEBUG", "call", "video fit view=${width}x$height frame=${w}x$h expanded=$large")
     }
-    private fun closeOutput() { attached?.let(video::detachSurface); attached = null }
+    private fun closeOutput() { attached?.let(video::detachSurface); attached = null; attachedTexture = null }
     fun close() {
         closed = true
         closeOutput()