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/*---------------------------------------------------------------------------
wpng - simple PNG-writing program writepng.h
---------------------------------------------------------------------------
Copyright (c) 1998-2007 Greg Roelofs. All rights reserved.
This software is provided "as is," without warranty of any kind,
express or implied. In no event shall the author or contributors
be held liable for any damages arising in any way from the use of
this software.
The contents of this file are DUAL-LICENSED. You may modify and/or
redistribute this software according to the terms of one of the
following two licenses (at your option):
LICENSE 1 ("BSD-like with advertising clause"):
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute
it freely, subject to the following restrictions:
1. Redistributions of source code must retain the above copyright
notice, disclaimer, and this list of conditions.
2. Redistributions in binary form must reproduce the above copyright
notice, disclaimer, and this list of conditions in the documenta-
tion and/or other materials provided with the distribution.
3. All advertising materials mentioning features or use of this
software must display the following acknowledgment:
This product includes software developed by Greg Roelofs
and contributors for the book, "PNG: The Definitive Guide,"
published by O'Reilly and Associates.
LICENSE 2 (GNU GPL v2 or later):
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
---------------------------------------------------------------------------*/
#ifndef TRUE
# define TRUE 1
# define FALSE 0
#endif
#ifndef MAX
# define MAX(a,b) ((a) > (b)? (a) : (b))
# define MIN(a,b) ((a) < (b)? (a) : (b))
#endif
#ifdef DEBUG
# define Trace(x) {fprintf x ; fflush(stderr); fflush(stdout);}
#else
# define Trace(x) ;
#endif
#define TEXT_TITLE 0x01
#define TEXT_AUTHOR 0x02
#define TEXT_DESC 0x04
#define TEXT_COPY 0x08
#define TEXT_EMAIL 0x10
#define TEXT_URL 0x20
#define TEXT_TITLE_OFFSET 0
#define TEXT_AUTHOR_OFFSET 72
#define TEXT_COPY_OFFSET (2*72)
#define TEXT_EMAIL_OFFSET (3*72)
#define TEXT_URL_OFFSET (4*72)
#define TEXT_DESC_OFFSET (5*72)
typedef unsigned char uch;
typedef unsigned short ush;
typedef unsigned long ulg;
typedef struct _mainprog_info {
double gamma;
long width;
long height;
time_t modtime;
FILE *infile;
FILE *outfile;
void *png_ptr;
void *info_ptr;
uch *image_data;
uch **row_pointers;
char *title;
char *author;
char *desc;
char *copyright;
char *email;
char *url;
int filter; /* command-line-filter flag, not PNG row filter! */
int pnmtype;
int sample_depth;
int interlaced;
int have_bg;
int have_time;
int have_text;
jmp_buf jmpbuf;
uch bg_red;
uch bg_green;
uch bg_blue;
} mainprog_info;
/* prototypes for public functions in writepng.c */
void writepng_version_info(void);
int writepng_init(mainprog_info *mainprog_ptr);
int writepng_encode_image(mainprog_info *mainprog_ptr);
int writepng_encode_row(mainprog_info *mainprog_ptr);
int writepng_encode_finish(mainprog_info *mainprog_ptr);
void writepng_cleanup(mainprog_info *mainprog_ptr);
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