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