Visualization Library 2.0.0-b5

A lightweight C++ OpenGL middleware for 2D/3D graphics

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readpng.h
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1 /*---------------------------------------------------------------------------
2 
3  rpng - simple PNG display program readpng.h
4 
5  ---------------------------------------------------------------------------
6 
7  Copyright (c) 1998-2007 Greg Roelofs. All rights reserved.
8 
9  This software is provided "as is," without warranty of any kind,
10  express or implied. In no event shall the author or contributors
11  be held liable for any damages arising in any way from the use of
12  this software.
13 
14  The contents of this file are DUAL-LICENSED. You may modify and/or
15  redistribute this software according to the terms of one of the
16  following two licenses (at your option):
17 
18 
19  LICENSE 1 ("BSD-like with advertising clause"):
20 
21  Permission is granted to anyone to use this software for any purpose,
22  including commercial applications, and to alter it and redistribute
23  it freely, subject to the following restrictions:
24 
25  1. Redistributions of source code must retain the above copyright
26  notice, disclaimer, and this list of conditions.
27  2. Redistributions in binary form must reproduce the above copyright
28  notice, disclaimer, and this list of conditions in the documenta-
29  tion and/or other materials provided with the distribution.
30  3. All advertising materials mentioning features or use of this
31  software must display the following acknowledgment:
32 
33  This product includes software developed by Greg Roelofs
34  and contributors for the book, "PNG: The Definitive Guide,"
35  published by O'Reilly and Associates.
36 
37 
38  LICENSE 2 (GNU GPL v2 or later):
39 
40  This program is free software; you can redistribute it and/or modify
41  it under the terms of the GNU General Public License as published by
42  the Free Software Foundation; either version 2 of the License, or
43  (at your option) any later version.
44 
45  This program is distributed in the hope that it will be useful,
46  but WITHOUT ANY WARRANTY; without even the implied warranty of
47  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
48  GNU General Public License for more details.
49 
50  You should have received a copy of the GNU General Public License
51  along with this program; if not, write to the Free Software Foundation,
52  Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
53 
54  ---------------------------------------------------------------------------*/
55 
56 #ifndef TRUE
57 # define TRUE 1
58 # define FALSE 0
59 #endif
60 
61 #ifndef MAX
62 # define MAX(a,b) ((a) > (b)? (a) : (b))
63 # define MIN(a,b) ((a) < (b)? (a) : (b))
64 #endif
65 
66 #ifdef DEBUG
67 # define Trace(x) {fprintf x ; fflush(stderr); fflush(stdout);}
68 #else
69 # define Trace(x) ;
70 #endif
71 
72 typedef unsigned char uch;
73 typedef unsigned short ush;
74 typedef unsigned long ulg;
75 
76 
77 /* prototypes for public functions in readpng.c */
78 
79 void readpng_version_info(void);
80 
81 int readpng_init(FILE *infile, ulg *pWidth, ulg *pHeight);
82 
83 int readpng_get_bgcolor(uch *bg_red, uch *bg_green, uch *bg_blue);
84 
85 uch *readpng_get_image(double display_exponent, int *pChannels,
86  ulg *pRowbytes);
87 
88 void readpng_cleanup(int free_image_data);
unsigned long ulg
Definition: zutil.h:38
void readpng_version_info(void)
Definition: readpng.c:76
unsigned short ush
Definition: readpng.h:73
void readpng_cleanup(int free_image_data)
Definition: readpng.c:296
int readpng_init(FILE *infile, ulg *pWidth, ulg *pHeight)
Definition: readpng.c:87
unsigned long ulg
Definition: readpng.h:74
unsigned char uch
Definition: readpng.h:72
FILE * infile
Definition: cdjpeg.h:141
int readpng_get_bgcolor(uch *bg_red, uch *bg_green, uch *bg_blue)
Definition: readpng.c:154
uch * readpng_get_image(double display_exponent, int *pChannels, ulg *pRowbytes)
Definition: readpng.c:206
unsigned char uch
Definition: zutil.h:34