JeVoisBase  1.21
JeVois Smart Embedded Machine Vision Toolkit Base Modules
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env_image.c
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1/*!@file env_image.c */
2
3// //////////////////////////////////////////////////////////////////// //
4// The iLab Neuromorphic Vision C++ Toolkit - Copyright (C) 2000-2005 //
5// by the University of Southern California (USC) and the iLab at USC. //
6// See http://iLab.usc.edu for information about this project. //
7// //////////////////////////////////////////////////////////////////// //
8// Major portions of the iLab Neuromorphic Vision Toolkit are protected //
9// under the U.S. patent ``Computation of Intrinsic Perceptual Saliency //
10// in Visual Environments, and Applications'' by Christof Koch and //
11// Laurent Itti, California Institute of Technology, 2001 (patent //
12// pending; application number 09/912,225 filed July 23, 2001; see //
13// http://pair.uspto.gov/cgi-bin/final/home.pl for current status). //
14// //////////////////////////////////////////////////////////////////// //
15// This file is part of the iLab Neuromorphic Vision C++ Toolkit. //
16// //
17// The iLab Neuromorphic Vision C++ Toolkit is free software; you can //
18// redistribute it and/or modify it under the terms of the GNU General //
19// Public License as published by the Free Software Foundation; either //
20// version 2 of the License, or (at your option) any later version. //
21// //
22// The iLab Neuromorphic Vision C++ Toolkit is distributed in the hope //
23// that it will be useful, but WITHOUT ANY WARRANTY; without even the //
24// implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR //
25// PURPOSE. See the GNU General Public License for more details. //
26// //
27// You should have received a copy of the GNU General Public License //
28// along with the iLab Neuromorphic Vision C++ Toolkit; if not, write //
29// to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, //
30// Boston, MA 02111-1307 USA. //
31// //////////////////////////////////////////////////////////////////// //
32//
33// Primary maintainer for this file: Rob Peters <rjpeters at usc dot edu>
34// $HeadURL: svn://isvn.usc.edu/software/invt/trunk/saliency/src/Envision/env_image.c $
35// $Id: env_image.c 7638 2007-01-03 21:23:18Z rjpeters $
36//
37
39
40// ######################################################################
41void env_img_init(struct env_image* img, const struct env_dims d)
42{
43 img->pixels = (intg32*) env_allocate(d.w * d.h * sizeof(intg32));
44 img->dims = d;
45}
46
47// ######################################################################
48void env_img_swap(struct env_image* img1, struct env_image* img2)
49{
50 const struct env_image img1copy = *img1;
51 *img1 = *img2;
52 *img2 = img1copy;
53}
54
55// ######################################################################
57{
59 img->dims.w = img->dims.h = 0;
60 img->pixels = 0;
61}
62
63// ######################################################################
65 const struct env_dims d)
66{
67 if (d.w != img->dims.w || d.h != img->dims.h)
68 {
70 img->pixels = (intg32*) env_allocate(d.w * d.h * sizeof(intg32));
71 img->dims = d;
72 }
73}
74
75// ######################################################################
76void env_img_copy_src_dst(const struct env_image* src, struct env_image* dst)
77{
78 if (src == dst) return;
79
80 env_img_resize_dims(dst, src->dims);
81
82 const env_size_t sz = env_img_size(src);
83 const intg32* const sptr = env_img_pixels(src);
84 intg32* const dptr = env_img_pixelsw(dst);
85
86 for (env_size_t i = 0; i < sz; ++i) dptr[i] = sptr[i];
87}
void * env_allocate(unsigned long nbytes)
Definition env_config.h:58
void env_deallocate(void *mem)
Definition env_config.h:59
void env_img_swap(struct env_image *img1, struct env_image *img2)
Definition env_image.c:48
void env_img_resize_dims(struct env_image *img, const struct env_dims d)
Definition env_image.c:64
void env_img_make_empty(struct env_image *img)
Definition env_image.c:56
void env_img_init(struct env_image *img, const struct env_dims d)
Definition env_image.c:41
void env_img_copy_src_dst(const struct env_image *src, struct env_image *dst)
Definition env_image.c:76
ENV_INTG32_TYPE intg32
32-bit signed integer
Definition env_types.h:52
unsigned long env_size_t
Definition env_types.h:71
A simple struct to hold a pair of width/height dimensions.
Definition env_types.h:81
env_size_t w
The width.
Definition env_types.h:82
env_size_t h
The height.
Definition env_types.h:83
Basic image class.
Definition env_image.h:44
struct env_dims dims
Definition env_image.h:45
intg32 * pixels
Definition env_image.h:46