Fawkes API  Fawkes Development Version
factory.h
1 
2 /***************************************************************************
3  * factory.h - Camera factory
4  *
5  * Created: Wed Apr 11 14:40:22 2007
6  * Copyright 2005-2007 Tim Niemueller [www.niemueller.de]
7  *
8  ****************************************************************************/
9 
10 /* This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version. A runtime exception applies to
14  * this software (see LICENSE.GPL_WRE file mentioned below for details).
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19  * GNU Library General Public License for more details.
20  *
21  * Read the full text in the LICENSE.GPL_WRE file in the doc directory.
22  */
23 
24 #ifndef _FIREVISION_CAMS_FACTORY_H_
25 #define _FIREVISION_CAMS_FACTORY_H_
26 
27 #include <core/exception.h>
28 #include <core/exceptions/software.h>
29 #include <fvcams/cam_exceptions.h>
30 #include <fvcams/camera.h>
31 
32 #include <cstddef>
33 
34 namespace firevision {
35 
36 class CameraArgumentParser;
37 
39 {
40 public:
41  static Camera *instance(const char *as);
42  static Camera *instance(const CameraArgumentParser *cap);
43 
44  /** Get typed instance of camera.
45  * Creates a new instance and converts it to the requested type. If the type
46  * does not match the requested camera an exception is thrown.
47  * @param as camera argument string
48  * @return typed camera instance
49  * @exception TypeMismatchException thrown, if requested camera does not match
50  * requested type.
51  */
52  template <class C>
53  static C *instance(const char *as);
54 };
55 
56 template <class C>
57 C *
58 CameraFactory::instance(const char *as)
59 {
61  C * tc = dynamic_cast<C *>(c);
62  if (tc == NULL) {
63  throw fawkes::TypeMismatchException("Returned camera is not of expected type");
64  }
65  return tc;
66 }
67 
68 } // end namespace firevision
69 
70 #endif
Camera argument parser.
Definition: camargp.h:36
Camera factory.
Definition: factory.h:39
static Camera * instance(const char *as)
Get camera instance.
Definition: factory.cpp:228
Camera interface for image aquiring devices in FireVision.
Definition: camera.h:33