Imported from libpng-1.0.1.tar
This commit is contained in:
Glenn Randers-Pehrson
parent
d12aa50322
commit
f9f2fe0ce7
5
CHANGES
5
CHANGES
@ -281,3 +281,8 @@ version 1.0.0a [March 9, 1998]
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version 1.0.0b [March 13, 1998]
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Quieted compiler complaints about two empty "for" loops in pngrutil.c
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Minor changes to makefile.s2x
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Removed #ifdef/#endif around a png_free() in pngread.c
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version 1.0.1 [March 14, 1998]
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Changes makefile.s2x to reduce security risk of using a relative pathname
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Fixed some typos in the documentation (Greg).
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Fixed a problem with value of "channels" returned by png_read_update_info()
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4
INSTALL
4
INSTALL
@ -1,5 +1,5 @@
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Installing libpng version 1.0.0b March 13, 1998
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Installing libpng version 1.0.1 March 15, 1998
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Before installing libpng, you must first install zlib. zlib
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can usually be found wherever you got libpng. zlib can be
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@ -10,7 +10,7 @@ zlib.h and zconf.h include files that correspond to the
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version of zlib that's installed.
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You can rename the directories that you downloaded (they
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might be called "libpng-1.0.0b or "lpng100" and "zlib-1.1.1"
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might be called "libpng-1.0.1 or "lpng100" and "zlib-1.1.1"
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or "zlib111") so that you have directories called "zlib" and "libpng".
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Your directory structure should look like this:
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2
README
2
README
@ -1,4 +1,4 @@
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README for libpng 1.0.0b (shared library 2.1)
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README for libpng 1.0.1 (shared library 2.1)
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See the note about version numbers near the top of png.h
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See INSTALL for instructions on how to install libpng.
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1
TODO
1
TODO
@ -2,6 +2,7 @@ TODO - list of things to do for libpng
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fix problem with C++ and EXTERN "C"
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add "grayscale->palette" transformation and "palette->grayscale" detection
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add "grayscale" -> "grayscale+alpha" and "grayscale+FILLER" transformations
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improved dithering
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multi-lingual error and warning message support
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sPLT chunk handling
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@ -1 +0,0 @@
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libpng-1.0.0b
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14
libpng.3
14
libpng.3
@ -1,4 +1,4 @@
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.TH LIBPNG 3 "March 13, 1998"
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.TH LIBPNG 3 "March 15, 1998"
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.SH NAME
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libpng \- Portable Network Graphics (PNG) Reference Library
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.SH SYNOPSIS
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@ -396,7 +396,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
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.SH LIBPNG.TXT
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libpng.txt - A description on how to use and modify libpng
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libpng version 1.0.0b March 13, 1998
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libpng version 1.0.1 March 15, 1998
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Updated and distributed by Glenn Randers-Pehrson
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<randeg@alumni.rpi.edu>
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Copyright (c) 1998, Glenn Randers-Pehrson
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@ -2298,13 +2298,13 @@ the first widely used release:
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0.90 0.90 90 0.90 [should be 2.0.90]
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0.95 0.95 95 0.95 [should be 2.0.95]
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0.96 0.96 96 0.96 [should be 2.0.96]
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0.97b 7") 1.00.97 97 1.0.1 [should be 2.0.97]
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0.97b 1.00.97 97 1.0.1 [should be 2.0.97]
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0.97c 0.97 97 2.0.97
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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 [should be 10000]
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1.0.0 1.0.0 100 2.1.0 [should be 10000]
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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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1.0.1 1.0.1 10001 2.1.0
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Henceforth the source version will match the shared-library
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@ -2312,7 +2312,7 @@ minor and patch numbers; the shared-library major version number will be
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used for changes in backward compatibility, as it is intended.
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The PNG_PNGLIB_VER macro, which is not used within libpng but
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is available for applications, is an unsigned integer of the form
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xyyzz corresponding to the source version x.y.z (leading zeros in y and z)
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xyyzz corresponding to the source version x.y.z (leading zeros in y and z).
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.SH "SEE ALSO"
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libpngpf(3), png(5)
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@ -2366,7 +2366,7 @@ possible without all of you.
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Thanks to Frank J. T. Wojcik for helping with the documentation.
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Libpng version 1.0.0b March 13, 1998:
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Libpng version 1.0.1 March 15, 1998:
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Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
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Currently maintained by Glenn Randers-Pehrson (randeg@alumni.rpi.edu).
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@ -1,6 +1,6 @@
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libpng.txt - A description on how to use and modify libpng
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libpng version 1.0.0b March 13, 1998
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libpng version 1.0.1 March 15, 1998
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Updated and distributed by Glenn Randers-Pehrson
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<randeg@alumni.rpi.edu>
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Copyright (c) 1998, Glenn Randers-Pehrson
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@ -1,4 +1,4 @@
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.TH LIBPNGPF 3 "March 13, 1998"
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.TH LIBPNGPF 3 "March 15, 1998"
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.SH NAME
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libpng \- Portable Network Graphics (PNG) Reference Library
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(private functions)
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2
png.5
2
png.5
@ -1,4 +1,4 @@
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.TH PNG 5 "March 13, 1998"
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.TH PNG 5 "March 15, 1998"
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.SH NAME
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png \- Portable Network Graphics (PNG) format
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.SH DESCRIPTION
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6
png.c
6
png.c
@ -1,12 +1,12 @@
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/* png.c - location for general purpose libpng functions
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*
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* libpng 1.0.0b
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* libpng 1.0.1
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* For conditions of distribution and use, see copyright notice in png.h
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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, Glenn Randers-Pehrson
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* March 13, 1998
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* March 15, 1998
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*/
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#define PNG_INTERNAL
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@ -16,7 +16,7 @@
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/* Version information for C files. This had better match the version
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* string defined in png.h.
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*/
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char png_libpng_ver[12] = "1.0.0b";
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char png_libpng_ver[12] = "1.0.1";
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/* Place to hold the signature string for a PNG file. */
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png_byte FARDATA png_sig[8] = {137, 80, 78, 71, 13, 10, 26, 10};
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14
png.h
14
png.h
@ -1,12 +1,12 @@
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/* png.h - header file for PNG reference library
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*
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* libpng 1.0.0b
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* libpng 1.0.1
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* For conditions of distribution and use, see the COPYRIGHT NOTICE below.
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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 Glenn Randers-Pehrson
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* March 13, 1998
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* March 15, 1998
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*
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* Note about libpng version numbers:
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*
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@ -37,7 +37,7 @@
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* used for changes in backward compatibility, as it is intended.
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* The PNG_PNGLIB_VER macro, which is not used within libpng but
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* is available for applications, is an unsigned integer of the form
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* xyyzz corresponding to the source version x.y.z (leading zeros in y and z)
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* xyyzz corresponding to the source version x.y.z (leading zeros in y and z).
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*
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*
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* See libpng.txt for more information. The PNG specification is available
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@ -118,13 +118,13 @@ 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 "1.0.0b"
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#define PNG_LIBPNG_VER_STRING "1.0.1"
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/* Gareful here. At one time, Guy wanted to use 082, but that would be octal.
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* We must not include leading zeroes.
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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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* version 1.0.1 it's xxyyzz, where x=major, y=minor, z=bugfix */
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#define PNG_LIBPNG_VER 10001 /* 1.0.1 */
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/* variables declared in png.c - only it needs to define PNG_NO_EXTERN */
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@ -1,12 +1,12 @@
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/* pngconf.h - machine configurable file for libpng
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*
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* libpng 1.0.0b
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* libpng 1.0.1
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* For conditions of distribution and use, see copyright notice in png.h
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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, Glenn Randers-Pehrson
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* March 13, 1998
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* March 15, 1998
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*/
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/* Any machine specific code is near the front of this file, so if you
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@ -1,12 +1,12 @@
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/* pngerror.c - stub functions for i/o and memory allocation
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*
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* libpng 1.0.0b
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* libpng 1.0.1
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* For conditions of distribution and use, see copyright notice in png.h
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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, Glenn Randers-Pehrson
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* March 13, 1998
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* March 15, 1998
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*
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* This file provides a location for all error handling. Users which
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* need special error handling are expected to write replacement functions
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4
pngget.c
4
pngget.c
@ -1,12 +1,12 @@
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/* pngget.c - retrieval of values from info struct
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*
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* libpng 1.0.0b
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* libpng 1.0.1
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* For conditions of distribution and use, see copyright notice in png.h
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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, Glenn Randers-Pehrson
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* March 13, 1998
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* March 15, 1998
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*/
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#define PNG_INTERNAL
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4
pngmem.c
4
pngmem.c
@ -1,12 +1,12 @@
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/* pngmem.c - stub functions for memory allocation
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*
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* libpng 1.0.0b
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* libpng 1.0.1
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* For conditions of distribution and use, see copyright notice in png.h
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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, Glenn Randers-Pehrson
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* March 13, 1998
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* March 15, 1998
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*
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* This file provides a location for all memory allocation. Users which
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* need special memory handling are expected to modify the code in this file
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@ -1,12 +1,12 @@
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/* pngpread.c - read a png file in push mode
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*
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* libpng 1.0.0b
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* libpng 1.0.1
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* For conditions of distribution and use, see copyright notice in png.h
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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, Glenn Randers-Pehrson
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* March 13, 1998
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* March 15, 1998
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*/
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#define PNG_INTERNAL
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@ -1,12 +1,12 @@
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/* pngread.c - read a PNG file
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*
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* libpng 1.0.0b
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* libpng 1.0.1
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* For conditions of distribution and use, see copyright notice in png.h
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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, Glenn Randers-Pehrson
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* March 13, 1998
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* March 15, 1998
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*
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* This file contains routines that an application calls directly to
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* read a PNG file or stream.
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@ -123,7 +123,7 @@ png_read_init(png_structp png_ptr)
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}
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/* Read the information before the actual image data. This has been
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* changed in v0.90 to allow reading a file which already has the magic
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* changed in v0.90 to allow reading a file that already has the magic
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* bytes read from the stream. You can tell libpng how many bytes have
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* been read from the beginning of the stream (up to the maxumum of 8)
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* via png_set_sig_bytes(), and we will only check the remaining bytes
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4
pngrio.c
4
pngrio.c
@ -1,12 +1,12 @@
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/* pngrio.c - functions for data input
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*
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* libpng 1.0.0b
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* libpng 1.0.1
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* For conditions of distribution and use, see copyright notice in png.h
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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, Glenn Randers-Pehrson
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* March 13, 1998
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* March 15, 1998
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*
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* This file provides a location for all input. Users which need
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* special handling are expected to write a function which has the same
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31
pngrtran.c
31
pngrtran.c
@ -1,12 +1,12 @@
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/* pngrtran.c - transforms the data in a row for PNG readers
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*
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* libpng 1.0.0b
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* libpng 1.0.1
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* For conditions of distribution and use, see copyright notice in png.h
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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, Glenn Randers-Pehrson
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* March 13, 1998
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* March 15, 1998
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*
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* This file contains functions optionally called by an application
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* in order to tell libpng how to handle data when reading a PNG.
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@ -665,7 +665,6 @@ png_init_read_transformations(png_structp png_ptr)
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if (png_ptr->transformations & PNG_INVERT_ALPHA)
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{
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#if defined(PNG_READ_EXPAND_SUPPORTED)
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/* GRR BUG #1: was (png_ptr->transformations & !PNG_EXPAND) */
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if (!(png_ptr->transformations & PNG_EXPAND))
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#endif
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{
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@ -715,11 +714,6 @@ png_init_read_transformations(png_structp png_ptr)
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{
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double g, gs;
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/*
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GRR BUG #3: inconsistent with handling of full RGBA below
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g = 1.0 / png_ptr->background_gamma;
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gs = 1.0 / (png_ptr->background_gamma * png_ptr->screen_gamma);
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*/
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switch (png_ptr->background_gamma_type)
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{
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case PNG_BACKGROUND_GAMMA_SCREEN:
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@ -740,17 +734,7 @@ png_init_read_transformations(png_structp png_ptr)
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gs = 1.0; /* back */
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}
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if (
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/*
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GRR BUG #2: This creates self-inconsistent images--fully
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transparent and fully opaque look fine, but translucent
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pixels are wrong (too bright if XV's code can be trusted).
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Commenting it out makes an internally self-consistent
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image, but still not consistent with RGBA version of same
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thing (again, too bright in XV).
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png_ptr->background_gamma_type==PNG_BACKGROUND_GAMMA_SCREEN||
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*/
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fabs(gs - 1.0) < PNG_GAMMA_THRESHOLD)
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if ( fabs(gs - 1.0) < PNG_GAMMA_THRESHOLD)
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{
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back.red = (png_byte)png_ptr->background.red;
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back.green = (png_byte)png_ptr->background.green;
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@ -1005,8 +989,7 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
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#endif
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#if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED)
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if ((png_ptr->transformations & PNG_GRAY_TO_RGB) &&
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!(info_ptr->color_type & PNG_COLOR_MASK_COLOR))
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if (png_ptr->transformations & PNG_GRAY_TO_RGB)
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info_ptr->color_type |= PNG_COLOR_MASK_COLOR;
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#endif
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@ -1018,12 +1001,8 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
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info_ptr->channels = 1;
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#if defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
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if ((png_ptr->transformations & PNG_STRIP_ALPHA) &&
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info_ptr->color_type & PNG_COLOR_MASK_ALPHA)
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{
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info_ptr->channels--;
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if (png_ptr->transformations & PNG_STRIP_ALPHA)
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info_ptr->color_type &= ~PNG_COLOR_MASK_ALPHA;
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}
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#endif
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#if defined(PNG_READ_FILLER_SUPPORTED)
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@ -1,12 +1,12 @@
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/* pngrutil.c - utilities to read a PNG file
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*
|
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* libpng 1.0.0b
|
||||
* libpng 1.0.1
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
|
||||
* Copyright (c) 1996, 1997 Andreas Dilger
|
||||
* Copyright (c) 1998, Glenn Randers-Pehrson
|
||||
* March 13, 1998
|
||||
* March 15, 1998
|
||||
*
|
||||
* This file contains routines which are only called from within
|
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* libpng itself during the course of reading an image.
|
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|
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4
pngset.c
4
pngset.c
@ -1,12 +1,12 @@
|
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|
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/* pngset.c - storage of image information into info struct
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*
|
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* libpng 1.0.0b
|
||||
* libpng 1.0.1
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
|
||||
* Copyright (c) 1996, 1997 Andreas Dilger
|
||||
* Copyright (c) 1998, Glenn Randers-Pehrson
|
||||
* March 13, 1998
|
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* March 15, 1998
|
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*
|
||||
* The functions here are used during reads to store data from the file
|
||||
* into the info struct, and during writes to store application data
|
||||
|
||||
@ -1,12 +1,12 @@
|
||||
|
||||
/* pngtest.c - a simple test program to test libpng
|
||||
*
|
||||
* libpng 1.0.0b
|
||||
* libpng 1.0.1
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
|
||||
* Copyright (c) 1996, 1997 Andreas Dilger
|
||||
* Copyright (c) 1998, Glenn Randers-Pehrson
|
||||
* March 13, 1998
|
||||
* March 15, 1998
|
||||
*
|
||||
* This program reads in a PNG image, writes it out again, and then
|
||||
* compares the two files. If the files are identical, this shows that
|
||||
|
||||
@ -1,12 +1,12 @@
|
||||
|
||||
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
|
||||
*
|
||||
* libpng 1.0.0b
|
||||
* libpng 1.0.1
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
|
||||
* Copyright (c) 1996, 1997 Andreas Dilger
|
||||
* Copyright (c) 1998, Glenn Randers-Pehrson
|
||||
* March 13, 1998
|
||||
* March 15, 1998
|
||||
*/
|
||||
|
||||
#define PNG_INTERNAL
|
||||
|
||||
4
pngwio.c
4
pngwio.c
@ -1,12 +1,12 @@
|
||||
|
||||
/* pngwio.c - functions for data output
|
||||
*
|
||||
* libpng 1.0.0b
|
||||
* libpng 1.0.1
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
|
||||
* Copyright (c) 1996, 1997 Andreas Dilger
|
||||
* Copyright (c) 1998, Glenn Randers-Pehrson
|
||||
* March 13, 1998
|
||||
* March 15, 1998
|
||||
*
|
||||
* This file provides a location for all output. Users which need
|
||||
* special handling are expected to write functions which have the same
|
||||
|
||||
@ -1,12 +1,12 @@
|
||||
|
||||
/* pngwrite.c - general routines to write a PNG file
|
||||
*
|
||||
* libpng 1.0.0b
|
||||
* libpng 1.0.1
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
|
||||
* Copyright (c) 1996, 1997 Andreas Dilger
|
||||
* Copyright (c) 1998, Glenn Randers-Pehrson
|
||||
* March 13, 1998
|
||||
* March 15, 1998
|
||||
*/
|
||||
|
||||
/* get internal access to png.h */
|
||||
|
||||
@ -1,12 +1,12 @@
|
||||
|
||||
/* pngwtran.c - transforms the data in a row for PNG writers
|
||||
*
|
||||
* libpng 1.0.0b
|
||||
* libpng 1.0.1
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
|
||||
* Copyright (c) 1996, 1997 Andreas Dilger
|
||||
* Copyright (c) 1998, Glenn Randers-Pehrson
|
||||
* March 13, 1998
|
||||
* March 15, 1998
|
||||
*/
|
||||
|
||||
#define PNG_INTERNAL
|
||||
|
||||
@ -1,12 +1,12 @@
|
||||
|
||||
/* pngwutil.c - utilities to write a PNG file
|
||||
*
|
||||
* libpng 1.0.0b
|
||||
* libpng 1.0.1
|
||||
* For conditions of distribution and use, see copyright notice in png.h
|
||||
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
|
||||
* Copyright (c) 1996, 1997 Andreas Dilger
|
||||
* Copyright (c) 1998, Glenn Randers-Pehrson
|
||||
* March 13, 1998
|
||||
* March 15, 1998
|
||||
*/
|
||||
|
||||
#define PNG_INTERNAL
|
||||
|
||||
@ -7,10 +7,13 @@
|
||||
CC=gcc
|
||||
|
||||
# Where the zlib library and include files are located
|
||||
# ZLIBLIB=/usr/local/lib
|
||||
# ZLIBINC=/usr/local/include
|
||||
ZLIBLIB=../zlib
|
||||
ZLIBINC=../zlib
|
||||
# Changing these to ../zlib poses a security risk. If you want
|
||||
# to have zlib in an adjacent directory, specify the full path instead of "..".
|
||||
#ZLIBLIB=../zlib
|
||||
#ZLIBINC=../zlib
|
||||
|
||||
ZLIBLIB=/usr/local/lib
|
||||
ZLIBINC=/usr/local/include
|
||||
|
||||
|
||||
WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
|
||||
|
||||
Reference in New Issue
Block a user