lossy.h

00001 
00002 /***************************************************************************
00003  *  lossy.h - lossy scaler, will just through away information, can only
00004  *            downscale images!
00005  *
00006  *  Generated: Tue May 16 14:57:16 2006 (Automatica 2006)
00007  *  Copyright  2005-2006  Tim Niemueller [www.niemueller.de]
00008  *
00009  ****************************************************************************/
00010 
00011 /*  This program is free software; you can redistribute it and/or modify
00012  *  it under the terms of the GNU General Public License as published by
00013  *  the Free Software Foundation; either version 2 of the License, or
00014  *  (at your option) any later version. A runtime exception applies to
00015  *  this software (see LICENSE.GPL_WRE file mentioned below for details).
00016  *
00017  *  This program is distributed in the hope that it will be useful,
00018  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00019  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00020  *  GNU Library General Public License for more details.
00021  *
00022  *  Read the full text in the LICENSE.GPL_WRE file in the doc directory.
00023  */
00024 
00025 #ifndef __FIREVISION_UTILS_SCALERS_LOSSY_H_
00026 #define __FIREVISION_UTILS_SCALERS_LOSSY_H_
00027 
00028 #include <fvutils/scalers/scaler.h>
00029 
00030 namespace firevision {
00031 #if 0 /* just to make Emacs auto-indent happy */
00032 }
00033 #endif
00034 
00035 class LossyScaler : public Scaler {
00036 
00037  public:
00038   LossyScaler();
00039   virtual ~LossyScaler();
00040 
00041   virtual void             set_scale_factor(float factor);
00042   virtual void             set_original_dimensions(unsigned int width,
00043                                                    unsigned int height);
00044   virtual void             set_scaled_dimensions(unsigned int width,
00045                                                  unsigned int height);
00046   virtual void             set_original_buffer(unsigned char *buffer);
00047   virtual void             set_scaled_buffer(unsigned char *buffer);
00048   virtual void             scale();
00049   virtual unsigned int     needed_scaled_width();
00050   virtual unsigned int     needed_scaled_height();
00051   virtual float            get_scale_factor();
00052 
00053  private:
00054   unsigned int    orig_width;
00055   unsigned int    orig_height;
00056   unsigned char  *orig_buffer;
00057 
00058   unsigned int    scal_width;
00059   unsigned int    scal_height;
00060   unsigned char  *scal_buffer;
00061 
00062   float           scale_factor;
00063 
00064 };
00065 
00066 } // end namespace firevision
00067 
00068 #endif

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