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Imported from libpng-1.0.4c.tar
This commit is contained in:
Glenn Randers-Pehrson
73
png.h
73
png.h
@@ -1,7 +1,7 @@
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/* png.h - header file for PNG reference library
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*
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* libpng version 1.0.4 - September 19, 1999
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* libpng version 1.0.4c - October 1, 1999
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* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
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* Copyright (c) 1996, 1997 Andreas Dilger
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* Copyright (c) 1998, 1999 Glenn Randers-Pehrson
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@@ -9,19 +9,19 @@
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* Authors and maintainers:
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* libpng versions 0.71, May 1995, through 0.89c, May 1996: Guy Schalnat
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* libpng versions 0.90, December 1996, through 0.96, May 1997: Andreas Dilger
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* libpng versions 0.97, January 1998, through 1.0.4 - September 19, 1999: Glenn R-P
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* libpng versions 0.97, January 1998, through 1.0.4c - October 1, 1999: Glenn
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* See also "Contributing Authors", below.
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*
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* Y2K compliance in libpng:
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* =========================
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*
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* January 13, 1999
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* October 1, 1999
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*
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* Since the PNG Development group is an ad-hoc body, we can't make
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* an official declaration.
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*
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* This is your unofficial assurance that libpng from version 0.71 and
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* upward through 1.0.4 are Y2K compliant. It is my belief that earlier
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* upward through 1.0.4c are Y2K compliant. It is my belief that earlier
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* versions were also Y2K compliant.
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*
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* Libpng only has three year fields. One is a 2-byte unsigned integer
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@@ -86,8 +86,8 @@
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* 0.98 0.98 98 2.0.98
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* 0.99 0.99 98 2.0.99
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* 0.99a-m 0.99 99 2.0.99
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* 1.00 1.00 100 2.1.0 [int should be 10000]
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* 1.0.0 1.0.0 100 2.1.0 [int should be 10000]
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* 1.00 1.00 100 2.1.0 [100 should be 10000]
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* 1.0.0 1.0.0 100 2.1.0 [100 should be 10000]
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* 1.0.1 1.0.1 10001 2.1.0
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* 1.0.1a-e 1.0.1a-e 10002 2.1.0.1a-e
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* 1.0.2 1.0.2 10002 2.1.0.2
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@@ -95,6 +95,8 @@
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* 1.0.3 1.0.3 10003 2.1.0.3
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* 1.0.3a-d 1.0.3a-d 10004 2.1.0.3a-d
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* 1.0.4 1.0.4 10004 2.1.0.4
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* 1.0.4a-c 1.0.4a-c 10005 2.1.0.4a-c
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* 1.0.5 1.0.5 10005 2.1.0.5
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*
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* Henceforth the source version will match the shared-library minor
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* and patch numbers; the shared-library major version number will be
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@@ -108,7 +110,18 @@
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* is available as RFC 2083 <ftp://ftp.uu.net/graphics/png/documents/>
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* and as a W3C Recommendation <http://www.w3.org/TR/REC.png.html>
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*
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* Contributing Authors:
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* COPYRIGHT NOTICE:
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*
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* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
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* (libpng versions 0.5, May 1995, through 0.89c, May 1996)
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* Copyright (c) 1996, 1997 Andreas Dilger
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* (libpng versions 0.90, December 1996, through 0.96, May 1997)
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* Copyright (c) 1998, 1999 Glenn Randers-Pehrson
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* (libpng versions 0.97, January 1998, through 1.0.4c, October 1, 1999)
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*
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* For the purposes of this copyright and license, "Contributing Authors"
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* is defined as the following set of individuals:
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*
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* John Bowler
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* Kevin Bracey
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* Sam Bushell
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@@ -124,21 +137,6 @@
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* Willem van Schaik
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* Tim Wegner
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*
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* The contributing authors would like to thank all those who helped
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* with testing, bug fixes, and patience. This wouldn't have been
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* possible without all of you.
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*
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* Thanks to Frank J. T. Wojcik for helping with the documentation.
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*
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* COPYRIGHT NOTICE:
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*
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* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
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* (libpng versions 0.5, May 1995, through 0.89c, May 1996)
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* Copyright (c) 1996, 1997 Andreas Dilger
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* (libpng versions 0.90, December 1996, through 0.96, May 1997)
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* Copyright (c) 1998, 1999 Glenn Randers-Pehrson
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* (libpng versions 0.97, January 1998, through 1.0.4, September 19, 1999)
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*
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* The PNG Reference Library is supplied "AS IS". The Contributing Authors
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* and Group 42, Inc. disclaim all warranties, expressed or implied,
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* including, without limitation, the warranties of merchantability and of
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@@ -169,6 +167,20 @@
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* appreciated.
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*/
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/*
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*
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* Libpng is OSI Certified Open Source Software. OSI Certified is a
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* certification mark of the Open Source Initiative.
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*/
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/*
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* The contributing authors would like to thank all those who helped
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* with testing, bug fixes, and patience. This wouldn't have been
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* possible without all of you.
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*
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* Thanks to Frank J. T. Wojcik for helping with the documentation.
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*/
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#ifndef _PNG_H
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#define _PNG_H
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@@ -196,14 +208,16 @@ extern "C" {
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*/
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/* Version information for png.h - this should match the version in png.c */
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#define PNG_LIBPNG_VER_STRING "1.0.4"
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#define PNG_LIBPNG_VER_STRING "1.0.4c"
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/* Careful here. At one time, Guy wanted to use 082, but that would be octal.
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* We must not include leading zeros.
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* Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
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* version 1.0.0 was mis-numbered 100 instead of 10000). From
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* version 1.0.1 it's xxyyzz, where x=major, y=minor, z=bugfix */
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#define PNG_LIBPNG_VER 10004 /* 1.0.4 */
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#define PNG_LIBPNG_VER 10005 /* 1.0.5 */
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/* Note to maintainer: update this number in scripts/pngdef.pas as well */
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/* variables declared in png.c - only it needs to define PNG_NO_EXTERN */
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#if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN)
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@@ -701,7 +715,7 @@ struct png_struct_def
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#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
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int gamma_shift; /* number of "insignificant" bits 16-bit gamma */
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float gamma; /* file gamma value */
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float screen_gamma; /* screen gamma value (display_gamma/viewing_gamma */
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float screen_gamma; /* screen gamma value (display_exponent) */
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#endif /* PNG_READ_GAMMA_SUPPORTED */
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#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
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png_bytep gamma_table; /* gamma table for 8-bit depth files */
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@@ -791,6 +805,11 @@ struct png_struct_def
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#endif
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};
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/* This prevents a compiler error in png_get_copyright() in png.c if png.c
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and png.h are both at * version 1.0.4c
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*/
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typedef png_structp version_1_0_4c;
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typedef png_struct FAR * FAR * png_structpp;
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/* Here are the function definitions most commonly used. This is not
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@@ -993,7 +1012,7 @@ extern PNG_EXPORT(void,png_set_dither) PNGARG((png_structp png_ptr,
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#endif /* PNG_READ_DITHER_SUPPORTED */
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#if defined(PNG_READ_GAMMA_SUPPORTED)
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/* Handle gamma correction. Screen_gamma=(display_gamma/viewing_gamma) */
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/* Handle gamma correction. Screen_gamma=(display_exponent) */
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extern PNG_EXPORT(void,png_set_gamma) PNGARG((png_structp png_ptr,
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double screen_gamma, double default_file_gamma));
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#endif /* PNG_READ_GAMMA_SUPPORTED */
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@@ -1610,7 +1629,7 @@ png_get_header_version(png_structp png_ptr)
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{
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if(png_ptr == NULL)
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/* silence compiler warning about unused png_ptr */ ;
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return("\n libpng version 1.0.4 - September 19, 1999 (header)\n");
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return("\n libpng version 1.0.4c - October 1, 1999 (header)\n");
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}
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#endif
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