搭建PVB架构，实现前端的基础布局、菜单、表格、图示等功能

2026-05-27 18:59:26 +08:00 · 2025-08-20 19:00:22 +08:00
parent 5de7687bcc
commit 7e965b6fb4
142 changed files with 28270 additions and 411 deletions
--- a/libs/pvb/include/rllib/rlwebcam.h
+++ b/libs/pvb/include/rllib/rlwebcam.h
@@ -0,0 +1,98 @@
+/***************************************************************************
+                          rlwebcam.h  -  description
+                             -------------------
+    begin                : Mo Aug 24 2009
+    copyright            : (C) 2009 by R. Lehrig
+    email                : lehrig@t-online.de
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This library is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU LESSER GENERAL PUBLIC LICENSE as        *
+ *   published by the Free Software Foundation                             *
+ *                                                                         *
+ ***************************************************************************/
+#ifndef _RL_WEBCAM_H_
+#define _RL_WEBCAM_H_
+
+#include "rldefine.h"
+#include "rlsocket.h"
+#include "rlstring.h"
+
+/*! <pre>
+class for handling networked webcams over http:// that use motion jpeg
+
+If you do not know under which URL your webcam provides the M-JPEG video stream
+you may use tcpdump to figure it out.
+
+Example:
+
+tcpdump -X -i eth0 -t -q -s 0 "host 192.168.1.200 && port 80" | grep -A 10 GET
+
+IP myhost.46727 > 192.168.1.200.http: tcp 97
+ 0x0000:  4500 0089 edb6 4000 4006 c891 c0a8 010e  E.....@.@.......
+ 0x0010:  c0a8 01c8 b687 0050 d99f 8b7d 0003 d5b2  .......P...}....
+ 0x0020:  5018 16d0 2460 0000 4745 5420 2f63 6769  P...$`..GET./cgi
+ 0x0030:  2d62 696e 2f53 7472 6561 6d3f 5669 6465  -bin/Stream?Vide
+ 0x0040:  6f20 4175 7468 6f72 697a 6174 696f 6e3a  o.Authorization:
+ 0x0050:  2042 6173 6963 2059 5752 7461 5734 3663  .Basic.YWRtaW46c
+ 0x0060:  4746 7a63 3364 7663 6d51 3d3f 7765 6263  GFzc3dvcmQ=?webc
+ 0x0070:  616d 5057 443d 526f 6f74 436f 6f6b 6965  amPWD=RootCookie
+ 0x0080:  3030 3030 300d 0a0d 0a                   00000....
+
+Usage example for pvbrowser slot functions:
+
+#include "rlwebcam.h"
+
+typedef struct // (todo: define your data structure here)
+{
+  rlWebcam webcamBig;
+}
+DATA;
+
+static int slotInit(PARAM *p, DATA *d)
+{
+  if(p == NULL || d == NULL) return -1;
+  p->sleep = 20;
+  p->force_null_event = 0;
+  d->webcamBig.debug = 0;
+  d->webcamBig.filename.printf("%swebcam.jpg", p->file_prefix);
+  d->webcamBig.setUrl("http://192.168.1.200/cgi-bin/Stream?Video Authorization: Basic YWRtaW46cGFzc3dvcmQ=?webcamPWD=RootCookie00000");
+  return 0;
+}
+
+static int slotNullEvent(PARAM *p, DATA *d)
+{
+  if(p == NULL || d == NULL) return -1;
+  if(const char *fname = d->webcamBig.getFrame()) // OR if(const char *fname = d->webcamBig.getSnapshot()) 
+  {
+    pvDownloadFileAs(p,fname,"webcam.jpg");
+    pvSetImage(p,WebcamBig,"webcam.jpg"); // WebcamBig is a pvQImage object that accepts jpeg images
+  }
+  return 0;
+}
+
+</pre> */
+class rlWebcam
+{
+public:
+  rlWebcam();
+  virtual ~rlWebcam();
+  int setUrl(const char *url);
+  int disconnect();
+  const char *getSnapshot(int timeout=3000);
+  const char *getFrame(int timeout=3000, int requestOnly=0);
+  int         getFrameBuffer(unsigned char *buffer, int maxbuffer, int timeout=3000);
+  const char *getUrl();
+  const char *getHost();
+  int getPort();
+  const char *getPath();
+  int debug;
+  rlString filename;
+  rlSocket *sock;
+
+private:
+  rlString url, temp1, temp2, temp3;
+};
+#endif