当前位置： 首页 > news >正文

Linux平台x86_64|aarch64架构如何实现轻量级RTSP服务

news 来源：原创 2024/9/27 7:17:26

技术背景

我们在做Linux平台x86_64架构或aarch64架构的推送模块的时候，有公司提出这样的技术需求，希望在Linux平台，实现轻量级RTSP服务，实现对摄像头或屏幕对外RTSP拉流，同步到大屏上去。

技术实现

废话不多说，直接上代码，先调用start_rtsp_server()指定端口号，启动RTSP服务。

	LogInit();NT_SmartPublisherSDKAPI push_api;if (!PushSDKInit(push_api)){XDestroyWindow(display, sub_wid);XDestroyWindow(display, main_wid);XCloseDisplay(display);return 0;}// auto rtsp_server_handle = start_rtsp_server(&push_api, 8554, "test", "12345");auto rtsp_server_handle = start_rtsp_server(&push_api, 8554, "", "");if (nullptr == rtsp_server_handle) {fprintf(stderr, "start_rtsp_server failed.\n");XDestroyWindow(display, sub_wid);XDestroyWindow(display, main_wid);XCloseDisplay(display);push_api.UnInit();return 0;}auto push_handle = open_config_instance(&push_api, 20);if (nullptr == push_handle) {fprintf(stderr, "open_config_instance failed.\n");XDestroyWindow(display, sub_wid);XDestroyWindow(display, main_wid);XCloseDisplay(display);stop_rtsp_server(&push_api, rtsp_server_handle);push_api.UnInit();return 0;}

PushSDKInit()实现如下：

	/** publisherdemo.cpp* Author: daniusdk.com*/bool PushSDKInit(NT_SmartPublisherSDKAPI& push_api){memset(&push_api, 0, sizeof(push_api));NT_GetSmartPublisherSDKAPI(&push_api);auto ret = push_api.Init(0, nullptr);if (NT_ERC_OK != ret){fprintf(stderr, "push_api.Init failed!\n");return false;}else{fprintf(stdout, "push_api.Init ok!\n");}return true;}

启动RTSP服务对应的代码如下：

	NT_HANDLE start_rtsp_server(NT_SmartPublisherSDKAPI* push_api, int port, std::string user_name, std::string password) {NT_HANDLE rtsp_server_handle = nullptr;if (NT_ERC_OK != push_api->OpenRtspServer(&rtsp_server_handle, 0)) {fprintf(stderr, "OpenRtspServer failed\n");return nullptr;}if (nullptr == rtsp_server_handle) {fprintf(stderr, "rtsp_server_handle is null\n");return nullptr;}if (NT_ERC_OK != push_api->SetRtspServerPort(rtsp_server_handle, port)) {push_api->CloseRtspServer(rtsp_server_handle);return nullptr;}if (!user_name.empty() && !password.empty())push_api->SetRtspServerUserNamePassword(rtsp_server_handle, user_name.c_str(), password.c_str());if (NT_ERC_OK == push_api->StartRtspServer(rtsp_server_handle, 0))return rtsp_server_handle;fprintf(stderr, "StartRtspServer failed\n");push_api->CloseRtspServer(rtsp_server_handle);return nullptr;}

open_config_instance()实现如下，可以获取摄像头或屏幕数据，并做基础的编码等参数配置：

	NT_HANDLE open_config_instance(NT_SmartPublisherSDKAPI* push_api, int dst_fps) {NT_INT32 pulse_device_number = 0;if (NT_ERC_OK == push_api->GetAuidoInputDeviceNumber(2, &pulse_device_number)){fprintf(stdout, "[daniusdk.com]Pulse device num:%d\n", pulse_device_number);char device_name[512];for (auto i = 0; i < pulse_device_number; ++i){if (NT_ERC_OK == push_api->GetAuidoInputDeviceName(2, i, device_name, 512)){fprintf(stdout, "[daniusdk.com]index:%d name:%s\n", i, device_name);}}}NT_INT32 alsa_device_number = 0;if (pulse_device_number < 1){if (NT_ERC_OK == push_api->GetAuidoInputDeviceNumber(1, &alsa_device_number)){fprintf(stdout, "Alsa device num:%d\n", alsa_device_number);char device_name[512];for (auto i = 0; i < alsa_device_number; ++i){if (NT_ERC_OK == push_api->GetAuidoInputDeviceName(1, i, device_name, 512)){fprintf(stdout, "[daniusdk.com]index:%d name:%s\n", i, device_name);}}}}NT_INT32 capture_speaker_flag = 0;if (NT_ERC_OK == push_api->IsCanCaptureSpeaker(2, &capture_speaker_flag)){if (capture_speaker_flag)fprintf(stdout, "[daniusdk.com]Support speaker capture\n");elsefprintf(stdout, "[daniusdk.com]UnSupport speaker capture\n");}NT_INT32 is_support_window_capture = 0;if (NT_ERC_OK == push_api->IsCaptureXWindowSupported(NULL, &is_support_window_capture)){if (is_support_window_capture)fprintf(stdout, "[daniusdk.com]Support window capture\n");elsefprintf(stdout, "[daniusdk.com]UnSupport window capture\n");}if (is_support_window_capture){NT_INT32 win_count = 0;if (NT_ERC_OK == push_api->UpdateCaptureXWindowList(NULL, &win_count) && win_count > 0){fprintf(stdout, "X Capture Winows list++\n");for (auto i = 0; i < win_count; ++i){NT_UINT64 wid;char title[512];if (NT_ERC_OK == push_api->GetCaptureXWindowInfo(i, &wid, title, sizeof(title) / sizeof(char))){x_win_list.push_back(wid);fprintf(stdout, "wid:%llu, title:%s\n", wid, title);}}fprintf(stdout, "[daniusdk.com]X Capture Winows list--\n");}}std::vector<CameraInfo> cameras;GetCameraInfo(push_api, cameras);if (!cameras.empty()){fprintf(stdout, "cameras count:%d\n", (int)cameras.size());for (const auto& c : cameras){fprintf(stdout, "camera name:%s, id:%s, cap_num:%d\n", c.name_.c_str(), c.id_.c_str(), (int)c.capabilities_.size());for (const auto& i : c.capabilities_){fprintf(stdout, "[daniusdk.com]cap w:%d, h:%d, fps:%d\n", i.width_, i.height_, i.max_frame_rate_);}}}NT_UINT32 auido_option = NT_PB_E_AUDIO_OPTION_NO_AUDIO;if (pulse_device_number > 0 || alsa_device_number > 0){auido_option = NT_PB_E_AUDIO_OPTION_CAPTURE_MIC;}else if (capture_speaker_flag){auido_option = NT_PB_E_AUDIO_OPTION_CAPTURE_SPEAKER;}//auido_option = NT_PB_E_AUDIO_OPTION_CAPTURE_MIC_SPEAKER_MIXER;NT_UINT32 video_option = NT_PB_E_VIDEO_OPTION_SCREEN;if (!cameras.empty()){video_option = NT_PB_E_VIDEO_OPTION_CAMERA;}else if (is_support_window_capture){video_option = NT_PB_E_VIDEO_OPTION_WINDOW;}// video_option = NT_PB_E_VIDEO_OPTION_LAYER;//video_option = NT_PB_E_VIDEO_OPTION_NO_VIDEO;NT_HANDLE push_handle = nullptr;//if (NT_ERC_OK != push_api->Open(&push_handle, NT_PB_E_VIDEO_OPTION_LAYER, NT_PB_E_AUDIO_OPTION_CAPTURE_SPEAKER, 0, NULL))if (NT_ERC_OK != push_api->Open(&push_handle, video_option, auido_option, 0, NULL)){return nullptr;}push_api->SetEventCallBack(push_handle, nullptr, OnSDKEventHandle);//push_api->SetXDisplayName(push_handle, ":0");//push_api->SetXDisplayName(push_handle, NULL);// 视频层配置方式if (NT_PB_E_VIDEO_OPTION_LAYER == video_option){std::vector<std::shared_ptr<nt_pb_sdk::layer_conf_wrapper_base> > layer_confs;auto index = 0;第0层填充RGBA矩形, 目的是保证帧率, 颜色就填充全黑auto rgba_layer_c0 = std::make_shared<nt_pb_sdk::RGBARectangleLayerConfigWrapper>(index++, true, 0, 0, 1280, 720);rgba_layer_c0->conf_.red_ = 200;rgba_layer_c0->conf_.green_ = 200;rgba_layer_c0->conf_.blue_ = 200;rgba_layer_c0->conf_.alpha_ = 255;layer_confs.push_back(rgba_layer_c0);// 第一层为桌面层//auto screen_layer_c1 = std::make_shared<nt_pb_sdk::ScreenLayerConfigWrapper>(index++, true, 0, 0, 1280, 720);//screen_layer_c1->conf_.scale_filter_mode_ = 3;//layer_confs.push_back(screen_layer_c1);第一层为窗口if (!x_win_list.empty()){auto window_layer_c1 = std::make_shared<nt_pb_sdk::WindowLayerConfigWrapper>(index++, true, 0, 0, 640, 360);window_layer_c1->conf_.xwindow_ = x_win_list.back();layer_confs.push_back(window_layer_c1);}摄像头层if (!cameras.empty()){auto camera_layer_c1 = std::make_shared<nt_pb_sdk::CameraLayerConfigWrapper>(index++, true,640, 0, 640, 360);strcpy(camera_layer_c1->conf_.device_unique_id_, cameras.front().id_.c_str());camera_layer_c1->conf_.is_flip_horizontal_ = 0;camera_layer_c1->conf_.is_flip_vertical_ = 0;camera_layer_c1->conf_.rotate_degress_ = 0;layer_confs.push_back(camera_layer_c1);if (cameras.size() > 1){auto camera_layer_c2 = std::make_shared<nt_pb_sdk::CameraLayerConfigWrapper>(index++, true,640, 0, 320, 240);strcpy(camera_layer_c2->conf_.device_unique_id_, cameras.back().id_.c_str());camera_layer_c2->conf_.is_flip_horizontal_ = 0;camera_layer_c2->conf_.is_flip_vertical_ = 0;camera_layer_c2->conf_.rotate_degress_ = 0;layer_confs.push_back(camera_layer_c2);}}auto image_layer1 = std::make_shared<nt_pb_sdk::ImageLayerConfigWrapper>(index++, true, 650, 120, 324, 300);strcpy(image_layer1->conf_.file_name_utf8_, "./testpng/tca.png");layer_confs.push_back(image_layer1);auto image_layer2 = std::make_shared<nt_pb_sdk::ImageLayerConfigWrapper>(index++, true, 120, 380, 182, 138);strcpy(image_layer2->conf_.file_name_utf8_, "./testpng/t4.png");layer_confs.push_back(image_layer2);std::vector<const NT_PB_LayerBaseConfig* > layer_base_confs;for (const auto& i : layer_confs){layer_base_confs.push_back(i->getBase());}if (NT_ERC_OK != push_api->SetLayersConfig(push_handle, 0, layer_base_confs.data(),layer_base_confs.size(), 0, nullptr)){push_api->Close(push_handle);push_handle = nullptr;return nullptr;}}// push_api->SetScreenClip(push_handle, 0, 0, 1280, 720);if (video_option == NT_PB_E_VIDEO_OPTION_CAMERA){if (!cameras.empty()){push_api->SetVideoCaptureDeviceBaseParameter(push_handle, cameras.front().id_.c_str(),640, 480);//push_api->FlipVerticalCamera(push_handle, 1);//push_api->FlipHorizontalCamera(push_handle, 1);//push_api->RotateCamera(push_handle, 0);}}if (video_option == NT_PB_E_VIDEO_OPTION_WINDOW){if (!x_win_list.empty()){//push_api->SetCaptureXWindow(push_handle, x_win_list[0]);push_api->SetCaptureXWindow(push_handle, x_win_list.back());}}push_api->SetFrameRate(push_handle, dst_fps); // 帧率设置push_api->SetVideoEncoder(push_handle, 0, 1, NT_MEDIA_CODEC_ID_H264, 0);push_api->SetVideoBitRate(push_handle, 2000);  // 平均码率2000kbpspush_api->SetVideoQuality(push_handle, 26);push_api->SetVideoMaxBitRate(push_handle, 4000); // 最大码率4000kbps// openh264 配置特定参数push_api->SetVideoEncoderSpecialInt32Option(push_handle, "usage_type", 0); //0是摄像头编码, 1是屏幕编码push_api->SetVideoEncoderSpecialInt32Option(push_handle, "rc_mode", 1); // 0是质量模式, 1是码率模式push_api->SetVideoEncoderSpecialInt32Option(push_handle, "enable_frame_skip", 0); // 0是关闭跳帧, 1是打开跳帧push_api->SetVideoKeyFrameInterval(push_handle, dst_fps * 2); // 关键帧间隔push_api->SetVideoEncoderProfile(push_handle, 3); // H264 highpush_api->SetVideoEncoderSpeed(push_handle, 3); // 编码速度设置到3if (pulse_device_number > 0){push_api->SetAudioInputLayer(push_handle, 2);push_api->SetAuidoInputDeviceId(push_handle, 0);}else if (alsa_device_number > 0){push_api->SetAudioInputLayer(push_handle, 1);push_api->SetAuidoInputDeviceId(push_handle, 0);}push_api->SetEchoCancellation(push_handle, 1, 0);push_api->SetNoiseSuppression(push_handle, 1);push_api->SetAGC(push_handle, 1);push_api->SetVAD(push_handle, 1);push_api->SetInputAudioVolume(push_handle, 0, 1.0);push_api->SetInputAudioVolume(push_handle, 1, 0.2);// 音频配置push_api->SetPublisherAudioCodecType(push_handle, 1);//push_api->SetMute(push_handle, 1);return push_handle;}

发布RTSP流实现如下：

	bool start_rtsp_stream(NT_SmartPublisherSDKAPI* push_api, NT_HANDLE rtsp_server_handle, NT_HANDLE handle, const std::string stream_name) {push_api->SetRtspStreamName(handle, stream_name.c_str());push_api->ClearRtspStreamServer(handle);push_api->AddRtspStreamServer(handle, rtsp_server_handle, 0);if (NT_ERC_OK != push_api->StartRtspStream(handle, 0))return false;return true;}

如果需要本地摄像头或者屏幕预览数据，调研预览接口即可：

	// 开启预览，也可以不开启, 根据需求来push_api.SetPreviewXWindow(push_handle, "", sub_wid);push_api.StartPreview(push_handle, 0, nullptr);

如需停止：

	fprintf(stdout, "StopRtspStream++\n");push_api.StopRtspStream(push_handle);fprintf(stdout, "StopRtspStream--\n");fprintf(stdout, "stop_rtsp_server++\n");stop_rtsp_server(&push_api, rtsp_server_handle);fprintf(stdout, "stop_rtsp_server--\n");push_api.StopPreview(push_handle);// push_api.StopPublisher(push_handle);push_api.Close(push_handle);push_handle = nullptr;XDestroyWindow(display, sub_wid);XDestroyWindow(display, main_wid);XCloseDisplay(display);push_api.UnInit();

总结

Linux平台arm64实现轻量级RTSP服务，目前实现的功能如下：

  • 音频编码：AAC；
  • 视频编码：H.264；
  • 协议：RTSP；
  • [音视频]支持纯音频/纯视频/音视频推送；
  • 支持X11屏幕采集；
  • 支持部分V4L2摄像头设备采集；
  • [屏幕/V4L2摄像头]支持帧率、关键帧间隔(GOP)、码率(bit-rate)设置；
  • [V4L2摄像头]支持V4L2摄像头设备选择(设备文件名范围:[/dev/video0, /dev/video63])、分辨率设置、帧率设置；
  • [V4L2摄像头]支持水平反转、垂直反转、0° 90° 180° 270°旋转；
  • [音频]支持基于alsa-lib接口的音频采集；
  • [音频]支持基于libpulse接口采集本机PulseAudio服务音频；
  • [预览]支持实时预览； 支持RTSP端口设置；
  • 支持RTSP鉴权用户名、密码设置；
  • 支持获取当前RTSP服务会话连接数;
  • 支持x64_64架构、aarch64架构（需要glibc-2.21及以上版本的Linux系统, 需要libX11.so.6, 需要GLib–2.0, 需安装 libstdc++.so.6.0.21、GLIBCXX_3.4.21、 CXXABI_1.3.9）。

配合我们的RTSP播放器，可轻松实现150-400ms低延迟体验，感兴趣的开发者，可以单独跟我沟通。

相关文章：

  • 北京网站建设多少钱？
  • 辽宁网页制作哪家好_网站建设
  • 高端品牌网站建设_汉中网站制作
  • 实验四 图像增强—灰度变换之直方图变换
  • 终端交互提示`quote＞`
  • 项目部署_持续集成_Jenkins
  • 间接平差——以水准网平差为例 (matlab详细过程版)
  • Swagger的原理及应用详解（八）
  • 10元 DIY 一个柔性灯丝氛围灯
  • python库（5）：Psutil库实现系统和硬件监控工具
  • 驱动新质生产力发展：绿色算力有了科学评价标准
  • 用Python轻松转换PDF为CSV
  • 【笔记】记一次在linux上通过在线安装mysql报错 CentOS 7 的官方镜像已经不再可用的解决方法+mysql配置
  • 针对 LLM 应用程序优化 RAG
  • QT操作各类数据库用法详解
  • python conda查看源，修改源
  • 20行代码写一个简单 Blazor 时钟组件
  • 模型优化调参利器贝叶斯优化bayesian-optimization实践
  • 【MySQL经典案例分析】 Waiting for table metadata lock
  • 【附node操作实例】redis简明入门系列—字符串类型
  • 【前端学习】-粗谈选择器
  • AHK 中 = 和 == 等比较运算符的用法
  • CSS盒模型深入
  • Eureka 2.0 开源流产，真的对你影响很大吗？
  • Javascript 原型链
  • MySQL数据库运维之数据恢复
  • PHP 的 SAPI 是个什么东西
  • 分布式熔断降级平台aegis
  • 工作踩坑系列——https访问遇到“已阻止载入混合活动内容”
  • 深度学习在携程攻略社区的应用
  • 使用Envoy 作Sidecar Proxy的微服务模式-4.Prometheus的指标收集
  • 小李飞刀：SQL题目刷起来！
  • 用Python写一份独特的元宵节祝福
  • 在 Chrome DevTools 中调试 JavaScript 入门
  • PostgreSQL之连接数修改
  • SAP CRM里Lead通过工作流自动创建Opportunity的原理讲解 ...
  • ​​​​​​​Installing ROS on the Raspberry Pi
  • ​学习一下，什么是预包装食品？​
  • # 再次尝试 连接失败_无线WiFi无法连接到网络怎么办【解决方法】
  • #define用法
  • #vue3 实现前端下载excel文件模板功能
  • $.proxy和$.extend
  • （4）事件处理——（7）简单事件（Simple events）
  • （9）目标检测_SSD的原理
  • (Matlab)遗传算法优化的BP神经网络实现回归预测
  • （二十六）Java 数据结构
  • （二十一）devops持续集成开发——使用jenkins的Docker Pipeline插件完成docker项目的pipeline流水线发布
  • (附源码)springboot宠物医疗服务网站 毕业设计688413
  • （附源码）springboot太原学院贫困生申请管理系统 毕业设计 101517
  • （深度全面解析）ChatGPT的重大更新给创业者带来了哪些红利机会
  • (源码版)2024美国大学生数学建模E题财产保险的可持续模型详解思路+具体代码季节性时序预测SARIMA天气预测建模
  • (杂交版)植物大战僵尸
  • (转) Face-Resources
  • (转)shell中括号的特殊用法 linux if多条件判断
  • (转）可以带来幸福的一本书
  • .net快速开发框架源码分享
  • .NET中的Exception处理(C#)
  • .sh