Add localized Android stream controls and player screen

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

@@ -0,0 +1,153 @@
+package com.utun.chat.ui.screens
+
+import android.Manifest
+import android.content.pm.PackageManager
+import android.graphics.SurfaceTexture
+import android.hardware.camera2.CameraCharacteristics
+import android.hardware.camera2.CameraManager
+import android.view.Surface
+import android.view.TextureView
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.foundation.layout.*
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.ArrowBack
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.viewinterop.AndroidView
+import androidx.core.content.ContextCompat
+import com.utun.chat.R
+import com.utun.chat.data.H264AnnexB
+import com.utun.chat.data.LogManager
+import com.utun.chat.data.NativeLib
+import com.utun.chat.data.StreamController
+import com.utun.chat.data.StreamPhase
+import com.utun.chat.data.StreamPlayerEngine
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.withContext
+import org.json.JSONArray
+import org.json.JSONObject
+
+private data class LiveSource(val id: Long, val name: String, val epoch: String)
+
+/** Выход с экрана закрывает только reader; foreground publisher останавливает явная кнопка/notification. */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun StreamScreen(channelId: String, channelName: String, onBack: () -> Unit) {
+    val context = LocalContext.current
+    val group = remember(channelId) { channelId.toULongOrNull()?.toLong() ?: 0L }
+    val state by StreamController.state.collectAsState()
+    val local = state?.takeIf { it.group == group }
+    var sources by remember(group) { mutableStateOf<List<LiveSource>>(emptyList()) }
+    var selected by remember(group) { mutableStateOf<LiveSource?>(null) }
+    var audio by remember { mutableStateOf(true) }
+    var camera by remember { mutableStateOf("") }
+    val cameras = remember {
+        val manager = context.getSystemService(CameraManager::class.java)
+        try { manager.cameraIdList.map { id -> id to (manager.getCameraCharacteristics(id).get(CameraCharacteristics.LENS_FACING)
+            == CameraCharacteristics.LENS_FACING_FRONT) } }
+        catch (e: Exception) { LogManager.addLog("ERROR", "stream", "camera enumeration: ${e.message}"); emptyList() }
+    }
+    LaunchedEffect(cameras) { if (camera.isEmpty()) camera = cameras.firstOrNull { !it.second }?.first ?: cameras.firstOrNull()?.first.orEmpty() }
+    var permissionVersion by remember { mutableStateOf(0) }
+    val permissions = rememberLauncherForActivityResult(ActivityResultContracts.RequestMultiplePermissions()) { permissionVersion++ }
+    val cameraGranted = permissionVersion.let { ContextCompat.checkSelfPermission(context, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED }
+    val micGranted = permissionVersion.let { ContextCompat.checkSelfPermission(context, Manifest.permission.RECORD_AUDIO) == PackageManager.PERMISSION_GRANTED }
+
+    LaunchedEffect(group) {
+        while (true) {
+            if (NativeLib.isReady()) sources = withContext(Dispatchers.IO) {
+                try {
+                    val json = JSONArray(NativeLib.getChannelMembers(channelId))
+                    (0 until json.length()).mapNotNull { i ->
+                        val member = json.getJSONObject(i)
+                        val profile = JSONObject(member.optString("ui").ifEmpty { "{}" })
+                        val source = profile.optString("stream_source")
+                        val fields = source.split(':')
+                        if (fields.size != 4 || fields[0].length != 16 || fields[0].toULongOrNull(16) == null ||
+                            member.optInt("dl") != 0 || member.optInt("on") == 0) null
+                        else LiveSource(member.getLong("ni"), member.optString("n"), fields[0])
+                    }
+                } catch (e: Exception) { LogManager.addLog("WARN", "stream", "stream list: ${e.message}"); emptyList() }
+            } else sources = emptyList()
+            delay(1000)
+        }
+    }
+    LaunchedEffect(local?.id, local?.phase) {
+        if (local?.phase == StreamPhase.LIVE) selected = LiveSource(NativeLib.getMyNodeId(), channelName, local.id.toString())
+    }
+
+    Scaffold(topBar = {
+        TopAppBar(title = { Text(stringResource(R.string.stream_title)) }, navigationIcon = {
+            IconButton(onClick = onBack) { Icon(Icons.AutoMirrored.Filled.ArrowBack, stringResource(R.string.back)) }
+        })
+    }) { padding ->
+        Column(Modifier.fillMaxSize().padding(padding).padding(12.dp), verticalArrangement = Arrangement.spacedBy(8.dp)) {
+            Text(channelName, style = MaterialTheme.typography.titleMedium)
+            if (local?.ongoing == true) {
+                Text(stringResource(when (local.phase) {
+                    StreamPhase.LIVE -> R.string.stream_live
+                    StreamPhase.STOPPING -> R.string.stream_stopping
+                    else -> R.string.stream_connecting
+                }))
+                Button(onClick = StreamController::stop, enabled = local.phase != StreamPhase.STOPPING) { Text(stringResource(R.string.stream_stop)) }
+            } else {
+                Row(horizontalArrangement = Arrangement.spacedBy(8.dp)) {
+                    cameras.forEach { (id, front) -> FilterChip(selected = camera == id, onClick = { camera = id },
+                        label = { Text(stringResource(if (front) R.string.stream_front_camera else R.string.stream_back_camera) + " $id") }) }
+                }
+                Row { Checkbox(checked = audio, onCheckedChange = { audio = it }); Text(stringResource(R.string.microphone), Modifier.padding(top = 12.dp)) }
+                Button(onClick = {
+                    if (!cameraGranted || (audio && !micGranted)) permissions.launch(
+                        listOf(Manifest.permission.CAMERA).plus(if (audio) listOf(Manifest.permission.RECORD_AUDIO) else emptyList()).toTypedArray())
+                    else {
+                        val degrees = when ((context as? android.app.Activity)?.windowManager?.defaultDisplay?.rotation) {
+                            Surface.ROTATION_90 -> 90; Surface.ROTATION_180 -> 180; Surface.ROTATION_270 -> 270; else -> 0
+                        }
+                        StreamController.start(group, camera, audio, degrees)
+                    }
+                }, enabled = camera.isNotEmpty() && group != 0L && state?.ongoing != true) { Text(stringResource(R.string.stream_start)) }
+            }
+            local?.error?.let { Text(stringResource(it), color = MaterialTheme.colorScheme.error) }
+            if (sources.isEmpty() && local?.ongoing != true) Text(stringResource(R.string.stream_none))
+            sources.forEach { source ->
+                TextButton(onClick = { selected = source }) { Text(stringResource(R.string.stream_watch, source.name.ifEmpty { source.id.toULong().toString() })) }
+            }
+            selected?.let { source ->
+                key(group, source.id, source.epoch) { LiveStreamView(group, source.id) }
+                TextButton(onClick = { selected = null }) { Text(stringResource(R.string.stream_close_view)) }
+            }
+        }
+    }
+}
+
+@Composable
+private fun LiveStreamView(group: Long, source: Long) {
+    val engine = remember(group, source) { StreamPlayerEngine(group, source) }
+    val aspect by engine.aspect.collectAsState()
+    val status by engine.status.collectAsState()
+    var surface by remember { mutableStateOf<Surface?>(null) }
+    DisposableEffect(engine) { onDispose { engine.stop() } }
+    Text(stringResource(status))
+    AndroidView(factory = { context ->
+        TextureView(context).apply {
+            surfaceTextureListener = object : TextureView.SurfaceTextureListener {
+                override fun onSurfaceTextureAvailable(texture: SurfaceTexture, width: Int, height: Int) {
+                    surface = Surface(texture); engine.start(surface!!)
+                }
+                override fun onSurfaceTextureSizeChanged(texture: SurfaceTexture, width: Int, height: Int) {}
+                override fun onSurfaceTextureDestroyed(texture: SurfaceTexture): Boolean {
+                    engine.stop(); surface?.release(); surface = null; return true
+                }
+                override fun onSurfaceTextureUpdated(texture: SurfaceTexture) {}
+            }
+        }
+    }, modifier = Modifier.fillMaxWidth().aspectRatio(aspect), onRelease = { view ->
+        engine.stop(); view.surfaceTextureListener = null; surface?.release(); surface = null
+    })
+}

tools/chatgui-android/app/src/main/res/values-ru/strings.xml

@@ -1,5 +1,20 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
+    <string name="stream_title">Трансляции</string>
+    <string name="stream_start">Начать трансляцию</string>
+    <string name="stream_stop">Остановить трансляцию</string>
+    <string name="stream_live">Прямая трансляция</string>
+    <string name="stream_connecting">Подключение…</string>
+    <string name="stream_stopping">Завершение трансляции…</string>
+    <string name="stream_ended">Трансляция завершена</string>
+    <string name="stream_failed">Не удалось запустить или продолжить трансляцию</string>
+    <string name="stream_waiting_key">Ожидание ключевого кадра…</string>
+    <string name="stream_none">В этом канале нет активных трансляций</string>
+    <string name="stream_watch">Смотреть: %1$s</string>
+    <string name="stream_close_view">Закрыть просмотр</string>
+    <string name="stream_front_camera">Фронтальная камера</string>
+    <string name="stream_back_camera">Задняя камера</string>
+    <string name="stream_resources_busy">Остановите активный звонок, рацию, запись или трансляцию перед новым захватом</string>
     <string name="microphone_permission_calls">"Для звонков и PTT разрешите доступ к микрофону"</string>
     <string name="microphone_request_failed">"Не удалось запросить доступ к микрофону"</string>
     <string name="microphone_permission_settings">"Доступ к микрофону запрещён. Разрешите его в настройках приложения, затем повторите звонок или нажатие PTT."</string>

tools/chatgui-android/app/src/main/res/values/strings.xml

@@ -1,5 +1,20 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
+    <string name="stream_title">Live streams</string>
+    <string name="stream_start">Start stream</string>
+    <string name="stream_stop">Stop stream</string>
+    <string name="stream_live">Streaming live</string>
+    <string name="stream_connecting">Connecting…</string>
+    <string name="stream_stopping">Finishing stream…</string>
+    <string name="stream_ended">Stream ended</string>
+    <string name="stream_failed">Could not start or continue the stream</string>
+    <string name="stream_waiting_key">Waiting for a key frame…</string>
+    <string name="stream_none">No active streams in this channel</string>
+    <string name="stream_watch">Watch %1$s</string>
+    <string name="stream_close_view">Close player</string>
+    <string name="stream_front_camera">Front camera</string>
+    <string name="stream_back_camera">Back camera</string>
+    <string name="stream_resources_busy">Stop the active call, radio, recording or stream before starting another capture</string>
     <string name="microphone_permission_calls">"Allow microphone access for calls and PTT"</string>
     <string name="microphone_request_failed">"Could not request microphone access"</string>
     <string name="microphone_permission_settings">"Microphone access is denied. Allow it in app settings, then try the call or PTT again."</string>