Verify shared stream mixing and avoid retrying terminal closures

tools/chatgui/src/streamplayer_window.cpp

@@ -242,8 +242,8 @@ void StreamPlayerWindow::decode() {
         if (request && !gui_stream_resync(p.id)) DEBUG_WARN(DEBUG_CATEGORY_STREAM, "desktop playback resync refused");
         deadline = nowUs() + 10000000; emit statusChanged(text("Waiting for a key frame…"));
     };
-    auto fail = [&](const QString& reason) {
-        p.failed = p.complete = true;
+    auto fail = [&](const QString& reason, bool retry = true) {
+        p.failed = retry; p.complete = true;
         DEBUG_ERROR(DEBUG_CATEGORY_STREAM, "desktop viewer failed id=%llu: %s", (unsigned long long)p.id, qPrintable(reason));
         emit statusChanged(reason);
     };
@@ -389,7 +389,7 @@ void StreamPlayerWindow::decode() {
                 : record.reason == STREAM_CLOSE_MEMBER ? "The source is no longer a channel member"
                 : record.reason == STREAM_CLOSE_SERVICE ? "Chat service is stopped"
                 : record.reason == STREAM_CLOSE_GROUP ? "The channel is closed" : "Could not continue the stream";
-            fail(text(reason)); break;
+            fail(text(reason), record.reason == STREAM_CLOSE_FAILED); break;
         }
         if (record.kind == StreamRecordKind::End) {
             std::lock_guard<std::mutex> guard(p.lock); p.ended = true; p.holdAudio = false;