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annotate ext/libpng-1.2.29/contrib/gregbook/readpng2.h @ 164:5b04a7d3ded6

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typo fix some missing event (de)registrations ability to capture one event multiple times (instead of only having one slot, we have groups and each group has an own slot, the default group is "default" so we are backward compatible
author spq@33b003aa-7bff-0310-803a-e67f0ece8222
date Wed, 15 Oct 2008 14:57:04 +0000
parents 4a0efb7baf70
children
rev   line source
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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1 /*---------------------------------------------------------------------------
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2
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3 rpng2 - progressive-model PNG display program readpng2.h
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4
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5 ---------------------------------------------------------------------------
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6
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7 Copyright (c) 1998-2008 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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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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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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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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22 including commercial applications, and to alter it and redistribute
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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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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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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26 notice, disclaimer, and this list of conditions.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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27 2. Redistributions in binary form must reproduce the above copyright
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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28 notice, disclaimer, and this list of conditions in the documenta-
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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29 tion and/or other materials provided with the distribution.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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30 3. All advertising materials mentioning features or use of this
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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31 software must display the following acknowledgment:
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32
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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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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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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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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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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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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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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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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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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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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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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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 enum rpng2_states {
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73 kPreInit = 0,
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74 kWindowInit,
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75 kDone
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76 };
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77
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78 typedef unsigned char uch;
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79 typedef unsigned short ush;
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80 typedef unsigned long ulg;
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81
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82 typedef struct _mainprog_info {
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83 double display_exponent;
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84 ulg width;
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85 ulg height;
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86 void *png_ptr;
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87 void *info_ptr;
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88 void (*mainprog_init)(void);
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89 void (*mainprog_display_row)(ulg row_num);
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90 void (*mainprog_finish_display)(void);
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91 uch *image_data;
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92 uch **row_pointers;
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93 jmp_buf jmpbuf;
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94 int passes; /* not used */
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95 int pass;
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96 int rowbytes;
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97 int channels;
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98 int need_bgcolor;
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99 #if (defined(__i386__) || defined(_M_IX86) || defined(__x86_64__))
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100 int nommxfilters;
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101 int nommxcombine;
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102 int nommxinterlace;
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103 #endif
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104 int state;
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105 uch bg_red;
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106 uch bg_green;
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107 uch bg_blue;
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108 } mainprog_info;
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109
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110
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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111 /* prototypes for public functions in readpng2.c */
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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112
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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113 void readpng2_version_info(void);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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114
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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115 int readpng2_check_sig(uch *sig, int num);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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116
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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117 int readpng2_init(mainprog_info *mainprog_ptr);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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118
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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119 int readpng2_decode_data(mainprog_info *mainprog_ptr, uch *rawbuf, ulg length);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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120
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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121 void readpng2_cleanup(mainprog_info *mainprog_ptr);