279 lines
8.4 KiB
C++
279 lines
8.4 KiB
C++
// rtsp_manager.cpp
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#include "rtsp_manager.hpp"
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#include "logger.hpp"
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#include <iostream>
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#include <algorithm>
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#include <thread>
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#include <chrono>
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// 静态变量定义
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GMainLoop *RTSPManager::loop = nullptr;
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GMainContext *RTSPManager::main_context = nullptr;
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GstRTSPServer *RTSPManager::server = nullptr;
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std::unordered_map<std::string, bool> RTSPManager::streaming_status;
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std::unordered_map<std::string, GstRTSPMediaFactory *> RTSPManager::mounted_factories;
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std::mutex RTSPManager::mounted_factories_mutex;
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std::unordered_map<std::string, std::vector<GstRTSPMedia *>> RTSPManager::media_map;
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std::mutex RTSPManager::media_map_mutex;
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void RTSPManager::init()
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{
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gst_init(nullptr, nullptr);
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LOG_INFO("[RTSP] GStreamer initialized.");
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}
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// 创建 media factory
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GstRTSPMediaFactory *RTSPManager::create_media_factory(const Camera &cam)
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{
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// 输出分辨率直接用相机原始分辨率
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int out_width = cam.width;
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int out_height = cam.height;
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// 构建 pipeline
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std::string launch_str =
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"( v4l2src device=" + cam.device +
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" ! video/x-raw,format=NV12,width=" + std::to_string(out_width) +
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",height=" + std::to_string(out_height) +
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",framerate=" + std::to_string(cam.fps) + "/1"
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" ! queue max-size-buffers=1 leaky=downstream" // 最小队列
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" ! mpph264enc bps=4000000 gop=" +
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std::to_string(cam.fps) + " " // 固定 4Mbps
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" ! h264parse"
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" ! rtph264pay name=pay0 pt=96 config-interval=1 )"; // 每秒发送 SPS/PPS
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GstRTSPMediaFactory *factory = gst_rtsp_media_factory_new();
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gst_rtsp_media_factory_set_launch(factory, launch_str.c_str());
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gst_rtsp_media_factory_set_shared(factory, TRUE);
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// 使用 media-configure 信号代替 media-created
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g_signal_connect_data(factory, "media-configure", G_CALLBACK(on_media_created),
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g_strdup(cam.name.c_str()), (GClosureNotify)g_free, static_cast<GConnectFlags>(0));
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return factory;
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}
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// 启动 RTSP server
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void RTSPManager::start(const std::vector<Camera> &cameras)
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{
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server = gst_rtsp_server_new();
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gst_rtsp_server_set_service(server, "8554");
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loop = g_main_loop_new(nullptr, FALSE);
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main_context = g_main_loop_get_context(loop);
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gst_rtsp_server_attach(server, nullptr);
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LOG_INFO("[RTSP] Server running on rtsp://localhost:8554");
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g_main_loop_run(loop);
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if (server)
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{
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g_object_unref(server);
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server = nullptr;
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}
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if (loop)
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{
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g_main_loop_unref(loop);
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loop = nullptr;
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}
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LOG_INFO("[RTSP] Server stopped.");
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}
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// media-configure 信号处理
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void RTSPManager::on_media_created(GstRTSPMediaFactory *factory, GstRTSPMedia *media, gpointer user_data)
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{
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const char *cam_name = static_cast<const char *>(user_data);
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g_object_ref(media); // 增加引用计数，防止被提前销毁
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{
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std::lock_guard<std::mutex> lock(media_map_mutex);
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media_map[cam_name].push_back(media);
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}
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// 连接 unprepared 信号，当 pipeline 被销毁时移除
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g_signal_connect_data(media, "unprepared", G_CALLBACK(on_media_unprepared),
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g_strdup(cam_name), (GClosureNotify)g_free, static_cast<GConnectFlags>(0));
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}
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// unprepared 信号处理
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void RTSPManager::on_media_unprepared(GstRTSPMedia *media, gpointer user_data)
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{
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const char *cam_name = static_cast<const char *>(user_data);
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{
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std::lock_guard<std::mutex> lock(media_map_mutex);
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auto it = media_map.find(cam_name);
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if (it != media_map.end())
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{
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auto &media_list = it->second;
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media_list.erase(std::remove(media_list.begin(), media_list.end(), media), media_list.end());
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if (media_list.empty())
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{
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media_map.erase(it);
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}
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}
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}
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g_object_unref(media); // 释放引用
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}
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// 挂载摄像头
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gboolean RTSPManager::mount_camera_in_main(gpointer data)
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{
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Camera *cam = static_cast<Camera *>(data);
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if (!cam || !server)
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{
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delete cam;
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return G_SOURCE_REMOVE;
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}
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GstRTSPMountPoints *mounts = gst_rtsp_server_get_mount_points(server);
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if (!mounts)
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{
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delete cam;
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return G_SOURCE_REMOVE;
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}
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std::string mount_point = "/" + cam->name;
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GstRTSPMediaFactory *factory = create_media_factory(*cam);
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if (!factory)
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{
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g_object_unref(mounts);
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delete cam;
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return G_SOURCE_REMOVE;
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}
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gst_rtsp_mount_points_add_factory(mounts, mount_point.c_str(), factory);
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g_object_unref(mounts);
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{
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std::lock_guard<std::mutex> lock(mounted_factories_mutex);
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mounted_factories[cam->name] = factory;
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streaming_status[cam->name] = true;
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}
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LOG_INFO("[RTSP] Camera '" + cam->name + "' mounted at rtsp://localhost:8554" + mount_point);
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delete cam;
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return G_SOURCE_REMOVE;
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}
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// 卸载摄像头
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gboolean RTSPManager::unmount_camera_in_main(gpointer data)
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{
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Camera *cam = static_cast<Camera *>(data);
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if (!cam || !server)
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{
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delete cam;
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return G_SOURCE_REMOVE;
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}
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std::string cam_name = cam->name;
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std::string mount_point = "/" + cam_name;
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// 停止所有媒体
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{
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std::lock_guard<std::mutex> lock(media_map_mutex);
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auto it = media_map.find(cam_name);
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if (it != media_map.end())
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{
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for (GstRTSPMedia *media : it->second)
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{
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gst_element_set_state(gst_rtsp_media_get_element(media), GST_STATE_NULL);
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// g_object_unref(media);
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}
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it->second.clear();
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media_map.erase(it);
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}
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}
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// 卸载 factory
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GstRTSPMountPoints *mounts = gst_rtsp_server_get_mount_points(server);
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if (mounts)
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{
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gst_rtsp_mount_points_remove_factory(mounts, mount_point.c_str());
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g_object_unref(mounts);
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}
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{
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std::lock_guard<std::mutex> lock(mounted_factories_mutex);
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auto it = mounted_factories.find(cam_name);
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if (it != mounted_factories.end())
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{
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if (it->second && G_IS_OBJECT(it->second))
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g_object_unref(it->second);
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mounted_factories.erase(it);
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}
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streaming_status[cam_name] = false;
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}
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LOG_INFO("[RTSP] Camera '" + cam_name + "' unmounted.");
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delete cam;
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return G_SOURCE_REMOVE;
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}
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// 公共挂载/卸载接口
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void RTSPManager::mount_camera(const Camera &cam)
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{
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Camera *camCopy = new Camera(cam);
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g_main_context_invoke(main_context, [](gpointer data) -> gboolean
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{ return RTSPManager::mount_camera_in_main(data); }, camCopy);
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}
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void RTSPManager::unmount_camera(const Camera &cam)
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{
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Camera *camCopy = new Camera(cam);
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g_main_context_invoke(main_context, [](gpointer data) -> gboolean
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{ return RTSPManager::unmount_camera_in_main(data); }, camCopy);
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}
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// 是否正在流
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bool RTSPManager::is_streaming(const std::string &cam_name)
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{
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std::lock_guard<std::mutex> lock(mounted_factories_mutex);
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auto it = streaming_status.find(cam_name);
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return it != streaming_status.end() ? it->second : false;
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}
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// 停止 server
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void RTSPManager::stop()
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{
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// 先卸载所有挂载摄像头
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std::vector<std::string> cams_to_unmount;
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{
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std::lock_guard<std::mutex> lock(mounted_factories_mutex);
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for (const auto &kv : mounted_factories)
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cams_to_unmount.push_back(kv.first);
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}
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for (const auto &cam_name : cams_to_unmount)
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{
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Camera cam;
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cam.name = cam_name;
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unmount_camera(cam);
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}
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// 等待所有流停止（最多 5 秒）
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auto deadline = std::chrono::steady_clock::now() + std::chrono::seconds(5);
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while (is_any_streaming() && std::chrono::steady_clock::now() < deadline)
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{
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std::this_thread::sleep_for(std::chrono::milliseconds(50));
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}
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// 退出 main loop
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if (loop)
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{
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g_main_context_invoke(main_context, [](gpointer data) -> gboolean
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{
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g_main_loop_quit(static_cast<GMainLoop *>(data));
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return G_SOURCE_REMOVE; }, loop);
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}
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}
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// 新增接口：检查是否还有摄像头在流
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bool RTSPManager::is_any_streaming()
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{
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std::lock_guard<std::mutex> lock(mounted_factories_mutex);
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for (const auto &kv : streaming_status)
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if (kv.second)
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return true;
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return false;
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}
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