writepng.h
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上传日期：2020-07-18
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文件大小：4k
- /*---------------------------------------------------------------------------
- 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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