Notify viewers when channels close and refresh resumed playback state

tools/chatgui/src/streamplayer_window.cpp

@@ -141,8 +141,8 @@ void StreamPlayerWindow::tick() {
     }
     if (!image.isNull()) {
         m_render->setFrame(image);
+        m_status->setText(text("Live"));
         if (!p.shown++) {
-            m_status->setText(text("Live"));
             DEBUG_INFO(DEBUG_CATEGORY_STREAM, "desktop first frame id=%llu %dx%d", (unsigned long long)p.id, image.width(), image.height());
         }
         emit framePresented();
@@ -275,7 +275,8 @@ void StreamPlayerWindow::decode() {
                 frame->width, frame->height, AV_PIX_FMT_RGB24, SWS_BILINEAR, nullptr, nullptr, nullptr);
             QImage image(frame->width, frame->height, QImage::Format_RGB888);
             if (!converter || image.isNull()) { fail(text("Stream decoder allocation failed")); p.running = false; break; }
-            uint8_t* destination[] = {image.bits(), nullptr, nullptr, nullptr}; int strides[] = {image.bytesPerLine(), 0, 0, 0};
+            uint8_t* destination[] = {image.bits(), nullptr, nullptr, nullptr};
+            int strides[] = {static_cast<int>(image.bytesPerLine()), 0, 0, 0};
             if (sws_scale(converter, frame->data, frame->linesize, 0, frame->height, destination, strides) != frame->height) {
                 fail(text("Stream video conversion failed")); p.running = false; break;
             }

tools/chatgui/transport/stream_bridge.cpp

@@ -155,7 +155,7 @@ bool gui_stream_attach(UTUN_INSTANCE* inst) {
 
 void gui_stream_detach(UTUN_INSTANCE* inst) {
     std::lock_guard<std::mutex> guard(bridge.lock);
-    if (bridge.inst != inst) return;
+    if (!inst || bridge.inst != inst) return;
     if (bridge.pending) uasync_cancel_post(inst->ua, bridge.pending);
     bridge.pending = nullptr; stream_set_event_callback(inst, nullptr, nullptr);
     if (bridge.viewer.id) closeViewer(StreamRecordKind::Closed, STREAM_CLOSE_SERVICE);