readpng.h revision 671242f350d172e106580348e24bab66b0d7e6a5
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync/*---------------------------------------------------------------------------
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync rpng - simple PNG display program readpng.h
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync ---------------------------------------------------------------------------
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync Copyright (c) 1998-2000 Greg Roelofs. All rights reserved.
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync This software is provided "as is," without warranty of any kind,
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync express or implied. In no event shall the author or contributors
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync be held liable for any damages arising in any way from the use of
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync this software.
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync Permission is granted to anyone to use this software for any purpose,
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync including commercial applications, and to alter it and redistribute
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync it freely, subject to the following restrictions:
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync 1. Redistributions of source code must retain the above copyright
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync notice, disclaimer, and this list of conditions.
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync 2. Redistributions in binary form must reproduce the above copyright
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync notice, disclaimer, and this list of conditions in the documenta-
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync tion and/or other materials provided with the distribution.
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync 3. All advertising materials mentioning features or use of this
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync software must display the following acknowledgment:
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync This product includes software developed by Greg Roelofs
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync and contributors for the book, "PNG: The Definitive Guide,"
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync published by O'Reilly and Associates.
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync ---------------------------------------------------------------------------*/
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync# define MAX(a,b) ((a) > (b)? (a) : (b))
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync# define MIN(a,b) ((a) < (b)? (a) : (b))
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync# define Trace(x) {fprintf x ; fflush(stderr); fflush(stdout);}
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync# define Trace(x) ;
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsynctypedef unsigned char uch;
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsynctypedef unsigned short ush;
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsynctypedef unsigned long ulg;
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsync/* prototypes for public functions in readpng.c */
e5bfc5c34142a7550be3564a8e01a037b1db5b31vboxsyncint readpng_init(FILE *infile, ulg *pWidth, ulg *pHeight);
e5f6ad85110ebdc7256808a0a3a8ce330370be6avboxsyncint readpng_get_bgcolor(uch *bg_red, uch *bg_green, uch *bg_blue);