SC1ModCam.hpp

Go to the documentation of this file.

/*
Copyright (c) 2004 Evan Heidtmann

Permission is hereby granted, free of charge, to any person obtaining a copy 
of this software and associated documentation files (the "Software"), to    
deal in the Software without restriction, including without limitation the  
rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 
sell copies of the Software, and to permit persons to whom the Software is  
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in  
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR  
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,    
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER      
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING     
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 
IN THE SOFTWARE.

*/

#include <string>
using namespace std;

class SC1ModCam {
  public:
        
        SC1ModCam (string devname = "/dev/video", int parport = 0x378);
        ~SC1ModCam ();

        unsigned long set_exposure (unsigned long msecs); // milliseconds
        unsigned long get_exposure (void);
        
        unsigned long set_multiplier (unsigned int m); 
        unsigned long get_multiplier (void);

        unsigned int set_fps (unsigned int fps);
        unsigned int get_fps (void);
        
        bool set_resolution (int width, int height);
        void get_resolution (int * width, int * height);

        void * get_buffer (void);
        size_t get_buffer_size (void);
        
        bool take_photo ();

        enum ERRCODE {
                ERR_OK = 0,
                ERR_ERROR,
                ERR_WARN,
                ERR_FATAL,
        };
        
        enum ERRCODE error (string * msg = NULL);
        
  protected:

        void _set_error(string error, enum ERRCODE code = ERR_ERROR);
        void _unset_error(void);
        string _error_string;
        enum ERRCODE _error_code;
        
        void * _buffer;
        int _multiplier;
        
        int _fps;
        int _image_width;
        int _image_height;
        static const float _bytes_per_pixel = 1.5;
        
        bool _sync_settings (void);
        bool _setup_camera (void);

        // Parport functions
        bool _open_shutter();
        bool _close_shutter();

        // Convenience function because usleep(3) is obsolete
        void _usleep (unsigned long usecs);
        
        int _devfd;
        
};

// vim:ts=4

---