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annotate ext/libpng-1.2.29/contrib/gregbook/readpng.h @ 15:5582579d1bca

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* Fixing debugging target * Thanks to Adus for the hint
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 06 Jul 2008 23:14:24 +0000
parents 4a0efb7baf70
children
rev   line source
0
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1 /*---------------------------------------------------------------------------
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2
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3 rpng - simple PNG display program readpng.h
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4
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5 ---------------------------------------------------------------------------
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6
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7 Copyright (c) 1998-2007 Greg Roelofs. All rights reserved.
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8
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9 This software is provided "as is," without warranty of any kind,
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10 express or implied. In no event shall the author or contributors
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11 be held liable for any damages arising in any way from the use of
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12 this software.
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13
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14 The contents of this file are DUAL-LICENSED. You may modify and/or
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15 redistribute this software according to the terms of one of the
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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16 following two licenses (at your option):
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17
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18
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19 LICENSE 1 ("BSD-like with advertising clause"):
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20
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21 Permission is granted to anyone to use this software for any purpose,
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22 including commercial applications, and to alter it and redistribute
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23 it freely, subject to the following restrictions:
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24
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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25 1. Redistributions of source code must retain the above copyright
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26 notice, disclaimer, and this list of conditions.
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27 2. Redistributions in binary form must reproduce the above copyright
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28 notice, disclaimer, and this list of conditions in the documenta-
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29 tion and/or other materials provided with the distribution.
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30 3. All advertising materials mentioning features or use of this
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31 software must display the following acknowledgment:
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32
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33 This product includes software developed by Greg Roelofs
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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34 and contributors for the book, "PNG: The Definitive Guide,"
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35 published by O'Reilly and Associates.
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36
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37
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38 LICENSE 2 (GNU GPL v2 or later):
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39
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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40 This program is free software; you can redistribute it and/or modify
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41 it under the terms of the GNU General Public License as published by
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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42 the Free Software Foundation; either version 2 of the License, or
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43 (at your option) any later version.
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44
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45 This program is distributed in the hope that it will be useful,
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46 but WITHOUT ANY WARRANTY; without even the implied warranty of
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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47 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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48 GNU General Public License for more details.
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49
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50 You should have received a copy of the GNU General Public License
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51 along with this program; if not, write to the Free Software Foundation,
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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52 Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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53
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54 ---------------------------------------------------------------------------*/
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55
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56 #ifndef TRUE
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57 # define TRUE 1
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58 # define FALSE 0
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59 #endif
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60
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61 #ifndef MAX
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62 # define MAX(a,b) ((a) > (b)? (a) : (b))
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63 # define MIN(a,b) ((a) < (b)? (a) : (b))
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64 #endif
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65
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66 #ifdef DEBUG
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67 # define Trace(x) {fprintf x ; fflush(stderr); fflush(stdout);}
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68 #else
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69 # define Trace(x) ;
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70 #endif
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71
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72 typedef unsigned char uch;
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73 typedef unsigned short ush;
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74 typedef unsigned long ulg;
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75
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76
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77 /* prototypes for public functions in readpng.c */
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78
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79 void readpng_version_info(void);
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80
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81 int readpng_init(FILE *infile, ulg *pWidth, ulg *pHeight);
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82
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83 int readpng_get_bgcolor(uch *bg_red, uch *bg_green, uch *bg_blue);
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84
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85 uch *readpng_get_image(double display_exponent, int *pChannels,
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86 ulg *pRowbytes);
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87
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88 void readpng_cleanup(int free_image_data);