374 lines
12 KiB
C++
374 lines
12 KiB
C++
// rtmp_manager.cpp
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#include "rtmp_manager.hpp"
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#include <arpa/inet.h>
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#include <ifaddrs.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <sys/stat.h>
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#include <chrono>
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#include <cstring>
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#include <thread>
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// ========== 工具函数 ==========
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static bool device_exists(const std::string& path)
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{
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struct stat st;
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return (stat(path.c_str(), &st) == 0);
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}
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// 动态获取指定网卡 IPv4 地址
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static std::string get_ip_address(const std::string& ifname)
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{
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struct ifaddrs *ifaddr, *ifa;
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char ip[INET_ADDRSTRLEN] = {0};
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if (getifaddrs(&ifaddr) == -1)
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{
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perror("getifaddrs");
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return "";
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}
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for (ifa = ifaddr; ifa != nullptr; ifa = ifa->ifa_next)
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{
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if (ifa->ifa_addr == nullptr) continue;
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if (ifa->ifa_addr->sa_family == AF_INET && ifname == ifa->ifa_name)
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{
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void* addr = &((struct sockaddr_in*)ifa->ifa_addr)->sin_addr;
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if (inet_ntop(AF_INET, addr, ip, sizeof(ip)))
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{
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freeifaddrs(ifaddr);
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return ip;
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}
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}
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}
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freeifaddrs(ifaddr);
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return "";
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}
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// ========== 静态成员 ==========
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std::unordered_map<std::string, std::unique_ptr<RTMPManager::StreamContext>> RTMPManager::streams;
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std::mutex RTMPManager::streams_mutex;
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// ========== 初始化 ==========
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void RTMPManager::init()
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{
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gst_init(nullptr, nullptr);
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LOG_INFO("[RTMP] GStreamer initialized.");
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}
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std::string RTMPManager::make_key(const std::string& name) { return name + "_main"; }
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// ========== 创建推流管线 ==========
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GstElement* RTMPManager::create_pipeline(const Camera& cam)
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{
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const int width = cam.width;
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const int height = cam.height;
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const int fps = cam.fps;
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const int bitrate = cam.bitrate;
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const std::string stream_name = cam.name + "_main";
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const std::string app = "camera";
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const std::string location = "rtmp://127.0.0.1:1935/" + app + "/" + stream_name + "?vhost=live";
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std::string pipeline_str = "v4l2src name=src device=" + cam.device +
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" ! "
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"video/x-raw,format=NV12,width=" +
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std::to_string(width) + ",height=" + std::to_string(height) +
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",framerate=" + std::to_string(fps) +
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"/1 ! "
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"tee name=t "
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// 主分支：编码 + RTMP 推流
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"t. ! queue ! "
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"mpph264enc bps=" +
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std::to_string(bitrate) + " gop=" + std::to_string(fps) +
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" ! "
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"h264parse ! flvmux streamable=true name=mux "
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// 静音音频轨道（避免 RTMP 播放器报错）
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"audiotestsrc wave=silence ! audioconvert ! audioresample ! "
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"voaacenc ! aacparse ! mux. "
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// 输出 RTMP
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"mux. ! rtmpsink name=sink location=\"" +
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location +
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"\" sync=false "
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// 第二分支：预留 (AI 分析/录制)
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"t. ! queue ! fakesink sync=false";
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GError* error = nullptr;
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GstElement* pipeline = gst_parse_launch(pipeline_str.c_str(), &error);
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if (error)
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{
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LOG_ERROR(std::string("[RTMP] Pipeline creation failed: ") + error->message);
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g_error_free(error);
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return nullptr;
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}
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return pipeline;
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}
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// ========== 主推流循环 ==========
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void RTMPManager::stream_loop(Camera cam, StreamContext* ctx)
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{
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const std::string key = make_key(cam.name);
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while (ctx->running)
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{
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// 1. 检查设备节点是否存在
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struct stat st{};
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if (stat(cam.device.c_str(), &st) != 0)
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{
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ctx->status.running = false;
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ctx->status.last_error = "Device not found: " + cam.device;
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LOG_WARN("[RTMP] " + key + " - " + ctx->status.last_error);
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std::this_thread::sleep_for(std::chrono::seconds(3));
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continue;
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}
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// 2. 创建 GStreamer 管线
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GstElement* pipeline = create_pipeline(cam);
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if (!pipeline)
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{
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ctx->status.running = false;
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ctx->status.last_error = "Pipeline creation failed";
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std::this_thread::sleep_for(std::chrono::seconds(3));
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continue;
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}
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gst_element_set_name(pipeline, key.c_str());
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GstBus* bus = gst_element_get_bus(pipeline);
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// 3. 在 v4l2src 的 src pad 上挂探测 probe
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bool got_frame = false;
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{
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GstElement* src = gst_bin_get_by_name(GST_BIN(pipeline), "src");
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if (src)
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{
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GstPad* pad = gst_element_get_static_pad(src, "src");
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if (pad)
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{
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gst_pad_add_probe(
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pad, GST_PAD_PROBE_TYPE_BUFFER,
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[](GstPad*, GstPadProbeInfo*, gpointer user_data) -> GstPadProbeReturn
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{
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*static_cast<bool*>(user_data) = true;
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return GST_PAD_PROBE_OK;
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},
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&got_frame, nullptr);
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gst_object_unref(pad);
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}
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else
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{
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LOG_WARN("[RTMP] " + key + " - src has no 'src' pad?");
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}
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gst_object_unref(src);
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}
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else
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{
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LOG_WARN("[RTMP] " + key + " - cannot find element 'src' for pad-probe");
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}
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}
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// 4. 启动播放
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LOG_INFO("[RTMP] Starting stream: " + key);
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gst_element_set_state(pipeline, GST_STATE_PLAYING);
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// 等待进入 PLAYING 状态（最长 5s）
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GstState state = GST_STATE_NULL, pending = GST_STATE_NULL;
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bool confirmed_running = false;
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if (gst_element_get_state(pipeline, &state, &pending, 5 * GST_SECOND) == GST_STATE_CHANGE_SUCCESS &&
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state == GST_STATE_PLAYING)
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{
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confirmed_running = true;
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ctx->status.running = true;
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ctx->status.last_error.clear();
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LOG_INFO("[RTMP] " + key + " confirmed PLAYING");
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}
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else
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{
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ctx->status.running = false;
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ctx->status.last_error = "Pipeline failed to confirm PLAYING";
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LOG_WARN("[RTMP] " + key + " - " + ctx->status.last_error);
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}
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if (!confirmed_running)
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{
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gst_element_set_state(pipeline, GST_STATE_NULL);
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if (bus) gst_object_unref(bus);
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gst_object_unref(pipeline);
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std::this_thread::sleep_for(std::chrono::milliseconds(RETRY_BASE_DELAY_MS));
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continue;
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}
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// 5. 运行阶段：监测帧和错误
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const auto start_t = std::chrono::steady_clock::now();
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bool need_restart = false;
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while (ctx->running)
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{
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// 检查是否收到帧（前 5s 内）
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if (!got_frame)
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{
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auto elapsed =
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std::chrono::duration_cast<std::chrono::seconds>(std::chrono::steady_clock::now() - start_t)
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.count();
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if (elapsed > 5)
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{
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ctx->status.running = false;
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ctx->status.last_error = "No frames detected (no video signal)";
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LOG_ERROR("[RTMP] " + key + " - " + ctx->status.last_error);
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need_restart = true;
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break;
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}
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}
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else
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{
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ctx->status.running = true;
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ctx->status.last_error.clear();
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}
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// 等待错误或 EOS 消息
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GstMessage* msg = gst_bus_timed_pop_filtered(bus, 200 * GST_MSECOND,
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(GstMessageType)(GST_MESSAGE_ERROR | GST_MESSAGE_EOS));
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if (!msg) continue;
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switch (GST_MESSAGE_TYPE(msg))
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{
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case GST_MESSAGE_ERROR:
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{
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GError* err = nullptr;
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gst_message_parse_error(msg, &err, nullptr);
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ctx->status.running = false;
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ctx->status.last_error = err ? err->message : "GStreamer error";
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LOG_ERROR("[RTMP] " + key + " stream error: " + ctx->status.last_error);
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if (err) g_error_free(err);
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need_restart = true;
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break;
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}
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case GST_MESSAGE_EOS:
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ctx->status.running = false;
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ctx->status.last_error = "End of stream (EOS)";
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LOG_WARN("[RTMP] " + key + " reached EOS");
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need_restart = true;
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break;
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default:
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break;
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}
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gst_message_unref(msg);
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if (need_restart) break;
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}
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// 6. 收尾清理
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gst_element_set_state(pipeline, GST_STATE_NULL);
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if (bus) gst_object_unref(bus);
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gst_object_unref(pipeline);
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// 7. 若仍在运行状态，准备重启
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if (ctx->running)
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{
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LOG_WARN("[RTMP] Restarting " + key + " in 3s...");
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std::this_thread::sleep_for(std::chrono::milliseconds(RETRY_BASE_DELAY_MS));
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}
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}
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ctx->status.running = false;
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LOG_INFO("[RTMP] Stream thread exited for " + key);
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}
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// ========== 启停与状态 ==========
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void RTMPManager::start_all()
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{
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LOG_INFO("[RTMP] Starting all record streams...");
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std::lock_guard<std::mutex> lock(streams_mutex);
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int delay_ms = 0;
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for (auto& cam : g_app_config.cameras)
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{
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auto key = make_key(cam.name);
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if (streams.find(key) != streams.end())
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{
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LOG_INFO("[RTMP] Stream already running: " + key);
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continue;
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}
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auto ctx = std::make_unique<StreamContext>();
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ctx->running.store(true);
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ctx->thread = std::thread(
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[cam, ptr = ctx.get(), delay_ms]()
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{
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std::this_thread::sleep_for(std::chrono::milliseconds(delay_ms));
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stream_loop(cam, ptr);
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});
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streams.emplace(key, std::move(ctx));
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delay_ms += 200; // 每路错开 200ms
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}
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}
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void RTMPManager::stop_all()
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{
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std::lock_guard<std::mutex> lock(streams_mutex);
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for (auto& kv : streams) kv.second->running.store(false);
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for (auto& kv : streams)
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if (kv.second->thread.joinable()) kv.second->thread.join();
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streams.clear();
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}
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bool RTMPManager::is_streaming(const std::string& cam_name)
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{
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std::lock_guard<std::mutex> lock(streams_mutex);
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auto it = streams.find(make_key(cam_name));
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return (it != streams.end() && it->second->status.running);
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}
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std::string RTMPManager::get_stream_url(const std::string& cam_name)
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{
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std::string ip = get_ip_address("enP2p33s0");
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if (ip.empty()) ip = "127.0.0.1";
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return "http://" + ip + ":1985/rtc/v1/whep/?app=camera&stream=" + cam_name + "_main&vhost=live";
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}
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// ========== 汇总状态 ==========
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std::vector<RTMPManager::ChannelInfo> RTMPManager::get_all_channels_status()
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{
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std::vector<ChannelInfo> result;
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std::lock_guard<std::mutex> lock(streams_mutex);
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for (size_t i = 0; i < g_app_config.cameras.size(); ++i)
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{
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const auto& cam = g_app_config.cameras[i];
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auto key = make_key(cam.name);
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ChannelInfo ch;
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ch.loc = static_cast<int>(i);
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ch.url.clear();
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ch.running = false;
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ch.reason = "Not started";
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auto it = streams.find(key);
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if (it != streams.end())
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{
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auto& status = it->second->status;
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ch.running = status.running;
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if (status.running)
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{
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ch.url = get_stream_url(cam.name);
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ch.reason.clear();
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}
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else
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{
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ch.reason = status.last_error.empty() ? "Unknown error" : status.last_error;
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}
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}
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else
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{
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ch.reason = "Context missing";
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}
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result.push_back(ch);
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}
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return result;
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}
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