/home/rex/ebltrunk/tools/libeblearntools/include/camera.h

/***************************************************************************
 *   Copyright (C) 2010 by Pierre Sermanet   *
 *   pierre.sermanet@gmail.com   *
 *   All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Redistribution under a license not approved by the Open Source 
 *       Initiative (http://www.opensource.org) must display the 
 *       following acknowledgement in all advertising material:
 *        This product includes software developed at the Courant
 *        Institute of Mathematical Sciences (http://cims.nyu.edu).
 *     * The names of the authors may not be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL ThE AUTHORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ***************************************************************************/

#ifndef CAMERA_H_
#define CAMERA_H_

#include "libidx.h"

#ifdef __GUI__
#include "libidxgui.h"
#endif

using namespace std;

namespace ebl {

  template <typename Tdata> class camera {
  public:
    // constructors/allocation /////////////////////////////////////////////////

    camera(int height = -1, int width = -1, std::ostream &out = std::cout,
           std::ostream &err = std::cerr);
    virtual ~camera();

    // frame grabbing //////////////////////////////////////////////////////////

    virtual idx<Tdata> grab() = 0;
    virtual string grab_filename();    
    virtual void next();
    virtual void previous();
    virtual bool empty();
    virtual void skip(uint n);
    virtual void set_input_narrow(int dim, int size, int off);
    virtual void set_grayscale();

    // video recording /////////////////////////////////////////////////////////
    
    virtual bool start_recording(uint window_id = 0, const char *name = NULL);
    virtual bool record_frame();    
    virtual bool stop_recording(float fps, const char *root = NULL);

    // info ////////////////////////////////////////////////////////////////////

    virtual float fps();
    virtual uint frame_id();
    virtual string frame_name();
    virtual string frame_fullname();
    virtual int remaining();
    virtual int size();

    // internal methods ////////////////////////////////////////////////////////
  protected:

    virtual idx<Tdata> postprocess();
    
    // members /////////////////////////////////////////////////////////////////
  protected:
    idx<Tdata>   frame;         
    int          height;        
    int          width;         
    bool         bresize;       
    bool         mresize;       
    uint         resize_mode;   
    uint         frame_id_;     
    string       frame_name_;   
    bool         grabbed;       
    uint         wid;           
    string       recording_name;
    uint         record_cnt;    
    float        fps_grab;      
    string       audio_filename;
    std::ostream &out;          
    std::ostream &err;          
    timer        tfps;          
    long         fps_ms_elapsed;
    uint         cntfps;        
    int          narrow_dim, narrow_size, narrow_off; 
    bool         grayscale;     
  };

} // end namespace ebl

#include "camera.hpp"

#endif /* CAMERA_H_ */