From 278efd574e69a59a3395032cac01dbcacee36507 Mon Sep 17 00:00:00 2001
From: evgeny <evgeny@adaptto.ru>
Date: Thu, 29 Oct 2026 00:52:54 +0100
Subject: [PATCH] Run camera handler tasks on real host worker threads with
 controlled main timers

---
 .../kotlin/android/annotation/SuppressLint.kt |  3 ++
 .../src/main/kotlin/android/os/HostVideoOs.kt | 47 +++++++++++++++++--
 .../main/kotlin/android/util/HostGeometry.kt  |  4 ++
 3 files changed, 49 insertions(+), 5 deletions(-)
 create mode 100644 tools/chatgui-android/video-tests/src/main/kotlin/android/annotation/SuppressLint.kt
 create mode 100644 tools/chatgui-android/video-tests/src/main/kotlin/android/util/HostGeometry.kt

diff --git a/tools/chatgui-android/video-tests/src/main/kotlin/android/annotation/SuppressLint.kt b/tools/chatgui-android/video-tests/src/main/kotlin/android/annotation/SuppressLint.kt
new file mode 100644
index 00000000..1fb24c12
--- /dev/null
+++ b/tools/chatgui-android/video-tests/src/main/kotlin/android/annotation/SuppressLint.kt
@@ -0,0 +1,3 @@
+package android.annotation
+
+annotation class SuppressLint(vararg val value: String)
diff --git a/tools/chatgui-android/video-tests/src/main/kotlin/android/os/HostVideoOs.kt b/tools/chatgui-android/video-tests/src/main/kotlin/android/os/HostVideoOs.kt
index ac8ba256..550e3f44 100644
--- a/tools/chatgui-android/video-tests/src/main/kotlin/android/os/HostVideoOs.kt
+++ b/tools/chatgui-android/video-tests/src/main/kotlin/android/os/HostVideoOs.kt
@@ -3,12 +3,18 @@ package android.os
 import java.util.concurrent.ConcurrentLinkedQueue
 
 /** Только JVM: main очередь и таймеры исполняет тест, worker остаётся настоящим Thread. */
-class Looper private constructor() {
+class Looper internal constructor(private val threaded: Boolean = false) {
     private data class Task(val handler: Handler, val action: Runnable, val deadline: Long)
     private val tasks = ConcurrentLinkedQueue<Task>()
-    private var now = 0L
+    @Volatile private var now = 0L
+    @Volatile private var quitting = false
+    private val monitor = Object()
+    private fun time(): Long = if (threaded) System.nanoTime() / 1_000_000 else now
     internal fun post(handler: Handler, action: Runnable, delay: Long): Boolean {
-        tasks.add(Task(handler, action, now + delay)); return true
+        synchronized(monitor) {
+            if (quitting) return false
+            tasks.add(Task(handler, action, time() + delay)); monitor.notifyAll(); return true
+        }
     }
     internal fun remove(handler: Handler, action: Runnable) { tasks.removeIf { it.handler === handler && it.action === action } }
     fun advanceBy(delay: Long) {
@@ -18,10 +24,41 @@ class Looper private constructor() {
             if (tasks.remove(next)) next.action.run()
         }
     }
-    companion object { private val main = Looper(); fun getMainLooper() = main }
+    internal fun loop() {
+        current.set(this)
+        while (true) {
+            val next = synchronized(monitor) {
+                val ready = tasks.filter { it.deadline <= time() }.minByOrNull { it.deadline }
+                if (ready == null && quitting) return
+                if (ready == null) monitor.wait(2)
+                ready
+            }
+            if (next != null && tasks.remove(next)) next.action.run()
+        }
+    }
+    internal fun quit(): Boolean = synchronized(monitor) { quitting = true; monitor.notifyAll(); true }
+    companion object {
+        private val main = Looper()
+        private val mainThread = Thread.currentThread()
+        private val current = ThreadLocal<Looper>()
+        fun getMainLooper() = main
+        fun myLooper(): Looper? = if (Thread.currentThread() === mainThread) main else current.get()
+    }
 }
 class Handler(private val looper: Looper) {
-    companion object { var rejectDelayed = false }
+    companion object { var rejectDelayed = false; var rejectImmediate = false }
+    fun post(action: Runnable): Boolean = !rejectImmediate && looper.post(this, action, 0)
     fun postDelayed(action: Runnable, delay: Long): Boolean = !rejectDelayed && looper.post(this, action, delay)
     fun removeCallbacks(action: Runnable) = looper.remove(this, action)
 }
+
+class HandlerThread(name: String) : Thread(name) {
+    val looper = Looper(true)
+    init { isDaemon = true }
+    override fun run() { looper.loop() }
+    fun quitSafely() = looper.quit()
+}
+object SystemClock {
+    fun elapsedRealtime(): Long = System.nanoTime() / 1_000_000
+    fun elapsedRealtimeNanos(): Long = System.nanoTime()
+}
diff --git a/tools/chatgui-android/video-tests/src/main/kotlin/android/util/HostGeometry.kt b/tools/chatgui-android/video-tests/src/main/kotlin/android/util/HostGeometry.kt
new file mode 100644
index 00000000..6c5e0a8d
--- /dev/null
+++ b/tools/chatgui-android/video-tests/src/main/kotlin/android/util/HostGeometry.kt
@@ -0,0 +1,4 @@
+package android.util
+
+data class Size(val width: Int, val height: Int)
+data class Range<T : Comparable<T>>(val lower: T, val upper: T)