{"id":16659,"date":"2025-04-18T23:07:20","date_gmt":"2025-04-18T15:07:20","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/16659.html"},"modified":"2025-04-18T23:07:20","modified_gmt":"2025-04-18T15:07:20","slug":"ubuntu%e4%b8%8b%ef%bc%8c%e5%9f%ba%e4%ba%8ev4l2%e6%a1%86%e6%9e%b6%e5%92%8cmosquitto%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%9e%e7%8e%b0%e8%a7%86%e9%a2%91%e5%ae%9e%e6%97%b6%e4%bc%a0%e8%be%93","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/16659.html","title":{"rendered":"Ubuntu\u4e0b\uff0c\u57fa\u4e8eV4L2\u6846\u67b6\u548cmosquitto\u670d\u52a1\u5668\u5b9e\u73b0\u89c6\u9891\u5b9e\u65f6\u4f20\u8f93"},"content":{"rendered":"

\u4e00.\u5f00\u53d1\u529f\u80fd\u63cf\u8ff0<\/p>\n

\u5728Ubuntu\u4e2d\uff0c\u7f16\u8bd1\u90e8\u7f72mosquitto\u7684\u6e90\u7801\uff0c\u7136\u540e\u7528C\u8bed\u8a00\u8bbe\u8ba1\u4e00\u4e2a\u53d1\u5e03\u5ba2\u6237\u7aef\uff0c\u57fa\u4e8eqtcreator\u7528C++\u8bbe\u8ba1\u4e00\u4e2aqt\u7a0b\u5e8f\uff0c\u4f5c\u4e3a\u63a5\u6536\u5ba2\u6237\u7aef\u3002\u5f53\u6253\u5f00mqtt\u4ee3\u7406\u670d\u52a1\u5668\uff0c\u53d1\u5e03\u5ba2\u6237\u7aef\u5411\u4ee3\u7406\u53d1\u9001\u5b9e\u65f6\u89c6\u9891\u6570\u636e\uff0c\u63a5\u6536\u5ba2\u6237\u7aef\u80fd\u591f\u63a5\u6536\u5230\u5b9e\u65f6\u89c6\u9891\u6570\u636e\u5e76\u4e14\u89e3\u7801\u8bb2\u5b83\u4eec\u5b9e\u65f6\u663e\u793a\u51fa\u6765\u3002<\/p>\n

\u4e8c.\u5f00\u53d1\u8c03\u8bd5\u8fc7\u7a0b<\/p>\n

\u6280\u672f\u65b9\u6848\uff1a\u57fa\u4e8eC\u8bed\u8a00\u548cv4l2\u6846\u67b6\uff0c\u7528\u7535\u8111\u6444\u50cf\u5934\u83b7\u53d6MJPEG\u683c\u5f0f\u7684\u89c6\u9891\u6d41\uff0c\u7136\u540e\u901a\u8fc7v4l2\u6846\u67b6\u7684\u7cfb\u7edf\u8c03\u7528\u63a5\u53e3\u53bb\u8fdb\u884c\u5185\u6838\u7f13\u51b2\u533a\u7684\u7ba1\u7406\uff0c\u5305\u62ec\u628a\u89c6\u9891\u6d41\u653e\u5165\u5185\u6838\u7f13\u5b58\u533a\uff0c\u7528\u6237\u83b7\u53d6\u5185\u6838\u7f13\u51b2\u533a\u5728\u7528\u6237\u7a7a\u95f4\u7684\u865a\u62df\u5730\u5740\uff0c\u7528\u6237\u901a\u77e5\u5185\u6838\u7f13\u51b2\u533a\u4f7f\u7528\u5b8c\u6bd5\u3002\u7528\u6237\u5728\u83b7\u53d6\u7f13\u51b2\u533a\u4e2d\u4e00\u5e27\u5e27\u7684MJPEG\u6570\u636e\u7684\u5730\u5740\u548c\u6570\u636e\u5927\u5c0f\u540e\uff0c\u53ef\u4ee5\u4e00\u5e27\u5e27\u5730\u628aMJPEG\u6570\u636e\u901a\u8fc7mosquitto\u7684publish\u53d1\u9001\u7ed9\u4ee3\u7406\uff0c\u4ee3\u7406\u518d\u8f6c\u53d1\u7ed9qt\u7a0b\u5e8f\uff0cqt\u7a0b\u5e8f\u5728\u63a5\u6536\u5230\u8fd9\u4e2a\u7a0b\u5e8f\u540e\uff0c\u5bf9mqtt\u6570\u636e\u4e2d\u7684MJPEG\u6570\u636e\u8fdb\u884c\u89e3\u7801\u5e76\u4e14\u4e00\u5e27\u5e27\u5730\u663e\u793a\u5728ui\u754c\u9762\u5f53\u4e2d\u3002<\/p>\n

\u6ce8\u610f\uff0c\u8fd9\u4e2a\u6280\u672f\u65b9\u6848\u6ca1\u6709\u8003\u8651\u5230\u97f3\u9891\u5904\u7406\uff0c\u53ea\u80fd\u5b9e\u73b0\u89c6\u9891\u4f20\u8f93\u7684\u529f\u80fd\u3002<\/p>\n

\u5728\u53d1\u9001\u5ba2\u6237\u7aef\uff08C\u7aef\uff09\u4e2d\u6574\u4f53\u5b9e\u73b0\u601d\u8def\uff1a<\/p>\n

1.open\u7535\u8111\u7684\u6444\u50cf\u5934\u8bbe\u5907<\/p>\n

2.\u8bbe\u7f6e\u89c6\u9891\u683c\u5f0f\u4e3a MJPEG (640×480)<\/p>\n

3.\u8bf7\u6c42\u548c\u6620\u5c04\u7f13\u51b2\u533a<\/p>\n

4.\u542f\u52a8\u89c6\u9891\u6d41\uff0c\u5f00\u59cb\u91c7\u96c6<\/p>\n

5.\u521d\u59cb\u5316\u5ba2\u6237\u7aef<\/p>\n

6.\u521b\u5efamqtt\u5ba2\u6237\u7aef\u793a\u4f8b<\/p>\n

7.\u4e0e\u4ee3\u7406\u670d\u52a1\u5668\u8fde\u63a5<\/p>\n

8.\u5728\u56de\u8c03\u51fd\u6570\u4e2d\u8ba2\u9605\u4e3b\u9898\\”video\/stream\/jpeg\\”<\/p>\n

9.\u8fdb\u5165while(!stop)\u5faa\u73af,\u8fd9\u4e2astop\u662f\u4e00\u4e2a\u7531\u4fe1\u53f7\u89e6\u53d1\u7684\u53d8\u91cf\uff0c\u7528\u4e8e\u9000\u51fawhile\u5faa\u73af<\/p>\n

10.\u5728\u5faa\u73af\u4e2d\u53cd\u590d\u53d6\u51fa\u5185\u6838\u7f13\u51b2\u533a\u7684\u5185\u5bb9\uff0c\u6253\u5305\u6210mqtt\u62a5\u6587\u8fdb\u884c\u53d1\u9001<\/p>\n

11.\u9000\u51fa\u5faa\u73af\u540e\u6e05\u7406\u8d44\u6e90\uff0c\u5305\u542b\u4e86\u505c\u6b62\u89c6\u9891\u6d41\uff0c\u53d6\u6d88\u6620\u5c04\u7f13\u51b2\u533a\uff0c\u5173\u95ed\u6444\u50cf\u5934\u8bbe\u5907\uff0c\u65ad\u5f00 MQTT \u8fde\u63a5<\/p>\n

C\u7aef\u7684\u4ee3\u7801\uff1a\uff08\u53ef\u4ee5\u76f4\u63a5\u8fd0\u884c\u7684\uff09<\/p>\n

#include <stdio.h>
\n#include <sys\/types.h>
\n#include <sys\/stat.h>
\n#include <fcntl.h>
\n#include <stdlib.h>
\n#include <unistd.h>
\n#include <sys\/ioctl.h>\/\/iocontrol\u8bbe\u5907\u63a7\u5236\u64cd\u4f5c
\n#include <linux\/videodev2.h>\/\/\u7528\u4e8e\u89c6\u9891\u8bbe\u5907\uff08\u5982\u6444\u50cf\u5934\uff09\u7684\u63a5\u53e3
\n#include <string.h>
\n#include <sys\/mman.h>
\n#include <jpeglib.h>\/\/JPEG \u56fe\u50cf\u5904\u7406\u5e93
\n#include <linux\/fb.h>\/\/\u5e27\u7f13\u51b2\u533a\u76f8\u5173
\n#include <stdio.h>
\n#include <mosquitto.h>
\n#include <signal.h><\/p>\n

#define MQTT_BROKER \\”localhost\\”\/\/\u5b9a\u4e49\u8981\u8fde\u63a5\u7684\u4ee3\u7406\u7684ip\u5730\u5740\uff0clocalhost\u6307\u8fde\u63a5\u672c\u5730\u7684ip
\n#define MQTT_PORT 1883\/\/\u6307\u4ee3\u7406\u76d1\u542c\u7684\u7aef\u53e3\u53f7\uff0c\u8fd9\u4e5f\u662f\u8fde\u63a5\u7684\u5165\u53e3
\n#define MQTT_TOPIC \\”video\/stream\/jpeg\\”\/\/\u8ba2\u9605\u7684\u4e3b\u9898
\n#define MQTT_QOS 1\/\/\u6d88\u606f\u670d\u52a1\u7b49\u7ea7<\/p>\n

volatile sig_atomic_t stop = 0;
\n\/\/\u5b9a\u4e49\u4e86\u4e00\u4e2asig_atomic\u7c7b\u578b\u7684\u5168\u5c40\u53d8\u91cfstop\uff0cvolatile \u8868\u793a\u8be5\u53d8\u91cf\u53ef\u80fd\u4f1a\u5728\u7a0b\u5e8f\u5916\u90e8\u88ab\u4fee\u6539\uff08\u5982\u901a\u8fc7\u4fe1\u53f7\u5904\u7406\u51fd\u6570\uff09
\n\/\/sig_atomic\u7c7b\u578b\u7684\u4f5c\u7528\uff1f\u901a\u5e38\u662fint\u7c7b\u578b\uff0c\u786e\u4fdd\u8fd9\u4e9b\u64cd\u4f5c\u662f\u539f\u5b50\u6027\u7684\uff08\u5373\u4e0d\u4f1a\u88ab\u4fe1\u53f7\u4e2d\u65ad\uff09
\n\/\/\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u662f\u5728\u5185\u5b58\u7684\u54ea\u91cc\u6267\u884c\u7684\uff1f\u5728\u6808\u4e2d\u5417\uff1f\u4fe1\u53f7\u5c5e\u4e8e\u5f02\u6b65\u4e8b\u4ef6\u5904\u7406\u673a\u5236\uff0c\u4f1a\u4e2d\u65ad\u6b63\u5e38\u7684\u7a0b\u5e8f\u6267\u884c\uff0c\u5e76\u5728\u5f53\u524d\u7ebf\u7a0b\u7684\u4e0a\u4e0b\u6587\u4e2d\u8fd0\u884c\uff0c\u4e0a\u4e0b\u6587\uff08context\uff09\u6307\u7684\u662f\u7a0b\u5e8f\u6267\u884c\u65f6\u7684\u72b6\u6001
\nvoid handle_sigint(int sig) {
\n stop = 1;
\n}\/\/\u5b9a\u4e49\u4e86\u4e00\u4e2a\u4fe1\u53f7\u5904\u7406\u51fd\u6570\uff0c\u5f53\u63a5\u6536\u5230 SIGINT\uff08\u901a\u5e38\u662f\u901a\u8fc7\u6309\u4e0b Ctrl+C \u89e6\u53d1\uff09\u65f6\uff0c\u5c06\u5168\u5c40\u53d8\u91cf stop \u8bbe\u7f6e\u4e3a 1\uff0c\u4ee5\u901a\u77e5\u7a0b\u5e8f\u9000\u51fa<\/p>\n

\/\/ \u8fde\u63a5\u56de\u8c03\u51fd\u6570\uff0c\u5ba2\u6237\u7aef\u6536\u5230\u4ee3\u7406\u7684\u6d88\u606f\u540e\u6267\u884c\uff0c\u8fd9\u4e2a\u6267\u884c\u662f\u5728\u4e3b\u7ebf\u7a0b\u4e4b\u5916\u7684
\n\/\/\u56de\u8c03\u51fd\u6570\u662f\u5728\u6808\u4e2d\u6267\u884c\u5417\uff1f\u662f\u5426\u8981\u591a\u5f00\u4e00\u4e2a\u8fdb\u7a0b\uff1f\u8fd9\u4e2a\u7f51\u7edc\u4fe1\u53f7\u7684\u56de\u8c03\u5904\u7406\u51fd\u6570\u662f\u5728\u540e\u53f0\u76d1\u542c\u7ebf\u7a0b\u4e2d\u6267\u884c\u7684\uff0c\u662f\u540c\u6b65\u673a\u5236\u3002
\nvoid on_connect(struct mosquitto *mosq, void *obj, int reason_code) {
\n if (reason_code != 0) {
\n fprintf(stderr, \\”Failed to connect to MQTT broker <\/p>\n","protected":false},"excerpt":{"rendered":"

\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb928\u6b21\uff0c\u70b9\u8d5e15\u6b21\uff0c\u6536\u85cf20\u6b21\u3002\u3010\u4ee3\u7801\u3011Ubuntu\u4e0b\uff0c\u57fa\u4e8eV4L2\u6846\u67b6\u548cmosquitto\u670d\u52a1\u5668\u5b9e\u73b0\u89c6\u9891\u5b9e\u65f6\u4f20\u8f93\u3002_ubuntu \u4f7f\u7528v4l2<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,218,103,371,43,214],"topic":[],"class_list":["post-16659","post","type-post","status-publish","format-standard","hentry","category-server","tag-linux","tag-qt","tag-ubuntu","tag-371","tag-43","tag-214"],"yoast_head":"\nUbuntu\u4e0b\uff0c\u57fa\u4e8eV4L2\u6846\u67b6\u548cmosquitto\u670d\u52a1\u5668\u5b9e\u73b0\u89c6\u9891\u5b9e\u65f6\u4f20\u8f93 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/16659.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ubuntu\u4e0b\uff0c\u57fa\u4e8eV4L2\u6846\u67b6\u548cmosquitto\u670d\u52a1\u5668\u5b9e\u73b0\u89c6\u9891\u5b9e\u65f6\u4f20\u8f93 - 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