1

src/rtmp_manager.cpp

@@ -106,6 +106,7 @@ GstElement *RTMPManager::create_pipeline(const Camera &cam)
 void RTMPManager::stream_loop(Camera cam, StreamContext *ctx)
 {
     std::string key = make_key(cam.name);
+    int consecutive_failures = 0;
 
     while (ctx->running)
     {
@@ -116,6 +117,7 @@ void RTMPManager::stream_loop(Camera cam, StreamContext *ctx)
             ctx->status.running = false;
             ctx->status.last_error = "Device not found: " + cam.device;
             LOG_WARN("[RTMP] " + key + " - " + ctx->status.last_error);
+            consecutive_failures++;
             std::this_thread::sleep_for(std::chrono::seconds(3));
             continue;
         }
@@ -127,6 +129,7 @@ void RTMPManager::stream_loop(Camera cam, StreamContext *ctx)
             ctx->status.running = false;
             ctx->status.last_error = "Pipeline creation failed";
             LOG_ERROR("[RTMP] " + key + " - " + ctx->status.last_error);
+            consecutive_failures++;
             std::this_thread::sleep_for(std::chrono::seconds(3));
             continue;
         }
@@ -135,41 +138,71 @@ void RTMPManager::stream_loop(Camera cam, StreamContext *ctx)
         gst_element_set_state(pipeline, GST_STATE_PLAYING);
         LOG_INFO("[RTMP] Starting stream: " + key);
 
-        ctx->status.running = true;
+        bool confirmed_running = false;
-        ctx->status.last_error.clear();
-
         bool got_frame = false;
         bool need_restart = false;
+
         auto start_time = std::chrono::steady_clock::now();
 
+        // ======== 等待 pipeline 确认启动 ========
+        {
+            bool got_first_frame = false;
+            auto check_start = std::chrono::steady_clock::now();
+
+            while (std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::steady_clock::now() - check_start)
+                       .count() < 2000)
+            {
+                GstState state;
+                gst_element_get_state(pipeline, &state, nullptr, 200 * GST_MSECOND);
+                if (state == GST_STATE_PLAYING)
+                {
+                    got_first_frame = true;
+                    break;
+                }
+                std::this_thread::sleep_for(std::chrono::milliseconds(100));
+            }
+
+            if (got_first_frame)
+            {
+                ctx->status.running = true;
+                ctx->status.last_error.clear();
+                confirmed_running = true;
+                LOG_INFO("[RTMP] " + key + " confirmed running.");
+            }
+            else
+            {
+                ctx->status.running = false;
+                ctx->status.last_error = "Pipeline failed to confirm PLAYING";
+                LOG_WARN("[RTMP] " + key + " - " + ctx->status.last_error);
+            }
+        }
+
+        if (!confirmed_running)
+        {
+            gst_element_set_state(pipeline, GST_STATE_NULL);
+            if (bus) gst_object_unref(bus);
+            gst_object_unref(pipeline);
+            std::this_thread::sleep_for(std::chrono::milliseconds(RETRY_BASE_DELAY_MS));
+            continue;
+        }
+
+        // ======== 主循环监听消息 ========
         while (ctx->running)
         {
             GstMessage *msg = gst_bus_timed_pop_filtered(
                 bus, 200 * GST_MSECOND, (GstMessageType)(GST_MESSAGE_ERROR | GST_MESSAGE_EOS | GST_MESSAGE_ELEMENT));
 
-            // 检查帧超时：3 秒内没有检测到帧
+            // 检查是否超时无帧
             auto elapsed =
                 std::chrono::duration_cast<std::chrono::seconds>(std::chrono::steady_clock::now() - start_time).count();
             if (!got_frame && elapsed > 5)
-            {
-                GstState state;
-                gst_element_get_state(pipeline, &state, nullptr, 0);
-                if (state != GST_STATE_PLAYING)
             {
                 ctx->status.running = false;
-                    ctx->status.last_error = "Pipeline failed to reach PLAYING (maybe no device signal)";
+                ctx->status.last_error = "No frames detected (no video signal)";
                 LOG_ERROR("[RTMP] " + key + " - " + ctx->status.last_error);
                 need_restart = true;
                 break;
             }
-                else
-                {
-                    ctx->status.running = true;
-                    ctx->status.last_error.clear();
-                    LOG_INFO("[RTMP] " + key + " reached PLAYING but no frames yet, assuming OK");
-                    got_frame = true;
-                }
-            }
 
             if (!msg) continue;
 
@@ -180,6 +213,8 @@ void RTMPManager::stream_loop(Camera cam, StreamContext *ctx)
                     if (gst_message_has_name(msg, "fpsprobe"))
                     {
                         got_frame = true;
+                        ctx->status.running = true;
+                        ctx->status.last_error.clear();
                     }
                     break;
 
@@ -210,14 +245,16 @@ void RTMPManager::stream_loop(Camera cam, StreamContext *ctx)
             if (need_restart) break;
         }
 
-        // 清理资源
+        // ======== 收尾与重启 ========
         gst_element_set_state(pipeline, GST_STATE_NULL);
         if (bus) gst_object_unref(bus);
         gst_object_unref(pipeline);
 
         if (ctx->running)
         {
-            LOG_WARN("[RTMP] Restarting " + key + " in 3s...");
+            consecutive_failures++;
+            LOG_WARN("[RTMP] Restarting " + key + " in 3s... (fail count " + std::to_string(consecutive_failures) +
+                     ")");
             std::this_thread::sleep_for(std::chrono::milliseconds(RETRY_BASE_DELAY_MS));
         }
     }