Fawkes API Fawkes Development Version
lossy.h
1
2/***************************************************************************
3 * lossy.h - lossy scaler, will just through away information, can only
4 * downscale images!
5 *
6 * Generated: Tue May 16 14:57:16 2006 (Automatica 2006)
7 * Copyright 2005-2006 Tim Niemueller [www.niemueller.de]
8 *
9 ****************************************************************************/
10
11/* This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version. A runtime exception applies to
15 * this software (see LICENSE.GPL_WRE file mentioned below for details).
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU Library General Public License for more details.
21 *
22 * Read the full text in the LICENSE.GPL_WRE file in the doc directory.
23 */
24
25#ifndef _FIREVISION_UTILS_SCALERS_LOSSY_H_
26#define _FIREVISION_UTILS_SCALERS_LOSSY_H_
27
28#include <fvutils/scalers/scaler.h>
29
30namespace firevision {
31
32class LossyScaler : public Scaler
33{
34public:
36 virtual ~LossyScaler();
37
38 virtual void set_scale_factor(float factor);
39 virtual void set_original_dimensions(unsigned int width, unsigned int height);
40 virtual void set_scaled_dimensions(unsigned int width, unsigned int height);
41 virtual void set_original_buffer(unsigned char *buffer);
42 virtual void set_scaled_buffer(unsigned char *buffer);
43 virtual void scale();
44 virtual unsigned int needed_scaled_width();
45 virtual unsigned int needed_scaled_height();
46 virtual float get_scale_factor();
47
48private:
49 unsigned int orig_width;
50 unsigned int orig_height;
51 unsigned char *orig_buffer;
52
53 unsigned int scal_width;
54 unsigned int scal_height;
55 unsigned char *scal_buffer;
56
57 float scale_factor;
58};
59
60} // end namespace firevision
61
62#endif
Lossy image scaler.
Definition: lossy.h:33
virtual ~LossyScaler()
Destructor.
Definition: lossy.cpp:52
virtual void set_scale_factor(float factor)
Set scale factor.
Definition: lossy.cpp:57
virtual void scale()
Scale image.
Definition: lossy.cpp:139
virtual unsigned int needed_scaled_height()
Minimum needed height of scaled image depending on factor and original image height.
Definition: lossy.cpp:127
virtual void set_scaled_dimensions(unsigned int width, unsigned int height)
Set dimenins of scaled image buffer.
Definition: lossy.cpp:83
virtual void set_original_dimensions(unsigned int width, unsigned int height)
Set original image dimensions.
Definition: lossy.cpp:76
LossyScaler()
Constructor.
Definition: lossy.cpp:41
virtual float get_scale_factor()
Returns the scale factor.
Definition: lossy.cpp:133
virtual unsigned int needed_scaled_width()
Minimum needed width of scaled image depending on factor and original image width.
Definition: lossy.cpp:121
virtual void set_original_buffer(unsigned char *buffer)
Set original image buffer.
Definition: lossy.cpp:109
virtual void set_scaled_buffer(unsigned char *buffer)
Set scaled image buffer.
Definition: lossy.cpp:115
Image scaler interface.
Definition: scaler.h:30