Probe hardware rate transitions and clear stale call port commands

src/call/call_video_port.c

@@ -141,7 +141,10 @@ int call_video_port_open(uint64_t id, const struct call_video_caps *caps) {
     pthread_mutex_lock(&lock);
     int result = schedule();
     if (!result) {
-        if (port.id != id) { clear_frames(); port.status = (struct call_video_port_status){0}; }
+        if (port.id != id) {
+            clear_frames(); port.status = (struct call_video_port_status){0};
+            port.configure = port.completed = port.resume = port.key = port.range = 0;
+        }
         port.id = id; port.local = *caps; port.opening = 1;
         DEBUG_INFO(DEBUG_CATEGORY_CALL, "video port open requested call=%llu", (unsigned long long)id);
     }
@@ -150,7 +153,8 @@ int call_video_port_open(uint64_t id, const struct call_video_caps *caps) {
 void call_video_port_close(uint64_t id) {
     pthread_mutex_lock(&lock);
     if (port.id == id) {
-        clear_frames(); port.id = 0; port.opening = 1; port.configure = port.completed = 0;
+        clear_frames(); port.id = 0; port.opening = 1;
+        port.configure = port.completed = port.resume = port.key = port.range = 0;
         if (port.inst) schedule();
         DEBUG_INFO(DEBUG_CATEGORY_CALL, "video port close requested call=%llu", (unsigned long long)id);
     }

tools/chatgui-android/app/src/debug/java/com/utun/chat/data/CallVideoProbe.kt

@@ -8,9 +8,16 @@ class CallVideoProbe : Instrumentation() {
     override fun onCreate(arguments: Bundle?) { super.onCreate(arguments); start() }
     override fun onStart() {
         try {
+            val decoders = CallVideoCodec.probeDecoders()
             val codecs = CallVideoCodec.probe()
-            check(codecs.isNotEmpty()) { "No conforming encoder/decoder pair" }
-            finish(0, Bundle().apply { putString("codecs", codecs.toString()) })
+            check(codecs.isNotEmpty() && decoders.isNotEmpty()) { "No verified encoders or decoders" }
+            for ((codec, entry) in codecs) {
+                val f = CallVideoFormat(1, 640, 480, codec = codec, level = entry.level, profile = entry.profile)
+                for (rate in listOf(4_000_000, 300_000, 4_000_000)) {
+                    CallVideoCodec(f, rate, entry.name).use { it.prepare() }
+                }
+            }
+            finish(0, Bundle().apply { putString("codecs", codecs.toString()); putString("decoders", decoders.toString()) })
         } catch (e: Exception) {
             android.util.Log.e("CallVideoProbe", "probe failed", e)
             finish(1, Bundle().apply { putString("error", e.toString()) })