android radio: track independent manual PTT owners

tools/chatgui-android/app/src/main/java/com/utun/chat/data/RadioAudioEngine.kt

@@ -72,6 +72,7 @@ class RadioAudioEngine {
     @Volatile private var captureRunning = false
     @Volatile private var playbackRunning = false
     @Volatile private var requestedTalk = false
+    private val pttHolds = RadioPttHolds()
     @Volatile private var talkRequestNs = 0L
     @Volatile private var generation = 0L
     private var audioGroup = 0L
@@ -135,6 +136,7 @@ class RadioAudioEngine {
         active = true
         groupId = group
         requestedTalk = false
+        pttHolds.cancel()
         _talkingFlow.value = false
         io.execute {
             if (!active || generation != version) return@execute
@@ -156,6 +158,7 @@ class RadioAudioEngine {
         mainHandler.removeCallbacks(releaseTalk)
         active = false
         requestedTalk = false
+        pttHolds.cancel()
         _talkingFlow.value = false
         ++generation
         io.execute { releaseLocked() }
@@ -513,7 +516,7 @@ class RadioAudioEngine {
         restoreAudioMode()
     }
 
-    fun talkBegin(): Boolean {
+    internal fun talkBegin(source: RadioPttSource = RadioPttSource.BUTTON): Boolean {
         if (!active) return false
         if (!MicrophonePermission.granted()) {
             MicrophonePermission.request("PTT") {
@@ -524,6 +527,8 @@ class RadioAudioEngine {
             return false
         }
         mainHandler.removeCallbacks(releaseTalk)
+        pttHolds.press(source)
+        LogManager.addLog("DEBUG", "RadioAudio", "PTT hold source=$source transmitting=$requestedTalk group=$groupId")
         if (requestedTalk) return true
         talkRequestNs = SystemClock.elapsedRealtimeNanos()
         requestedTalk = true
@@ -540,15 +545,17 @@ class RadioAudioEngine {
     }
 
     /** Отпускание: 250мс передачи, повторное касание отменяет завершение. */
-    fun talkEnd() {
+    internal fun talkEnd(source: RadioPttSource = RadioPttSource.BUTTON) {
+        if (!pttHolds.release(source)) return
         if (!active || !requestedTalk) return
         mainHandler.removeCallbacks(releaseTalk)
         mainHandler.postDelayed(releaseTalk, RELEASE_HOLD_MS)
-        LogManager.addLog("DEBUG", "RadioAudio", "PTT release scheduled +${RELEASE_HOLD_MS}ms")
+        LogManager.addLog("DEBUG", "RadioAudio", "PTT release source=$source scheduled +${RELEASE_HOLD_MS}ms")
     }
 
     /** Отмена без хвоста передачи при выключении/потере разрешений. */
-    fun cancelTalk() {
+    internal fun cancelTalk(source: RadioPttSource? = null) {
+        if (!pttHolds.cancel(source)) return
         mainHandler.removeCallbacks(releaseTalk)
         finishTalk()
     }

tools/chatgui-android/app/src/main/java/com/utun/chat/data/RadioOverlayService.kt

@@ -286,7 +286,7 @@ class RadioOverlayService : Service() {
     private fun removeOverlay() {
         val view = overlayView ?: return
         talking = false
-        RadioAudioEngine.instance().cancelTalk()
+        RadioAudioEngine.instance().cancelTalk(RadioPttSource.OVERLAY)
         try { windowManager?.removeView(view) } catch (e: Exception) {
             LogManager.addLog("WARN", "RadioOverlay", "Overlay removal failed: $e")
         }
@@ -453,7 +453,7 @@ class RadioOverlayService : Service() {
 
     private fun beginTalk() {
         if (talking) return
-        if (!RadioAudioEngine.instance().talkBegin()) return
+        if (!RadioAudioEngine.instance().talkBegin(RadioPttSource.OVERLAY)) return
         talking = true
         updateButtonColor()
     }
@@ -461,7 +461,7 @@ class RadioOverlayService : Service() {
     private fun endTalk() {
         if (!talking) return
         talking = false
-        RadioAudioEngine.instance().talkEnd()
+        RadioAudioEngine.instance().talkEnd(RadioPttSource.OVERLAY)
         updateButtonColor()
     }
 

tools/chatgui-android/app/src/main/java/com/utun/chat/data/RadioPttHolds.kt

@@ -0,0 +1,18 @@
+package com.utun.chat.data
+
+/** Независимые владельцы ручной передачи. Все операции выполняются в главном потоке. */
+internal enum class RadioPttSource { BUTTON, OVERLAY, VOLUME }
+
+internal class RadioPttHolds {
+    private val held = mutableSetOf<RadioPttSource>()
+
+    fun press(source: RadioPttSource) { held.add(source) }
+
+    /** Завершать передачу можно только после отпускания последнего владельца. */
+    fun release(source: RadioPttSource): Boolean = held.remove(source) && held.isEmpty()
+
+    fun cancel(source: RadioPttSource? = null): Boolean {
+        if (source == null) held.clear() else held.remove(source)
+        return held.isEmpty()
+    }
+}