minecraft-pi-reborn
/
libpng
Archived
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Imported from libpng-1.0.1.tar

This commit is contained in:
Glenn Randers-Pehrson 1998-03-15 18:20:23 -06:00
parent d12aa50322
commit f9f2fe0ce7
28 changed files with 74 additions and 87 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
CHANGES
View File

@ -281,3 +281,8 @@ version 1.0.0a [March 9, 1998]
version 1.0.0b [March 13, 1998]
Quieted compiler complaints about two empty "for" loops in pngrutil.c
Minor changes to makefile.s2x
Removed #ifdef/#endif around a png_free() in pngread.c
version 1.0.1 [March 14, 1998]
Changes makefile.s2x to reduce security risk of using a relative pathname
Fixed some typos in the documentation (Greg).
Fixed a problem with value of "channels" returned by png_read_update_info()

4
INSTALL
View File

@ -1,5 +1,5 @@
Installing libpng version 1.0.0b March 13, 1998
Installing libpng version 1.0.1 March 15, 1998
Before installing libpng, you must first install zlib. zlib
can usually be found wherever you got libpng. zlib can be
@ -10,7 +10,7 @@ zlib.h and zconf.h include files that correspond to the
version of zlib that's installed.
You can rename the directories that you downloaded (they
might be called "libpng-1.0.0b or "lpng100" and "zlib-1.1.1"
might be called "libpng-1.0.1 or "lpng100" and "zlib-1.1.1"
or "zlib111") so that you have directories called "zlib" and "libpng".
Your directory structure should look like this:

2
README
View File

@ -1,4 +1,4 @@
README for libpng 1.0.0b (shared library 2.1)
README for libpng 1.0.1 (shared library 2.1)
See the note about version numbers near the top of png.h
See INSTALL for instructions on how to install libpng.

1
TODO
View File

@ -2,6 +2,7 @@ TODO - list of things to do for libpng
fix problem with C++ and EXTERN "C"
add "grayscale->palette" transformation and "palette->grayscale" detection
add "grayscale" -> "grayscale+alpha" and "grayscale+FILLER" transformations
improved dithering
multi-lingual error and warning message support
sPLT chunk handling

1
libpng-1.0.0b
View File

@ -1 +0,0 @@
libpng-1.0.0b

14
libpng.3
View File

@ -1,4 +1,4 @@
.TH LIBPNG 3 "March 13, 1998"
.TH LIBPNG 3 "March 15, 1998"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library
.SH SYNOPSIS
@ -396,7 +396,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
.SH LIBPNG.TXT
libpng.txt - A description on how to use and modify libpng
libpng version 1.0.0b March 13, 1998
libpng version 1.0.1 March 15, 1998
Updated and distributed by Glenn Randers-Pehrson
<randeg@alumni.rpi.edu>
Copyright (c) 1998, Glenn Randers-Pehrson
@ -2298,13 +2298,13 @@ the first widely used release:
0.90 0.90 90 0.90 [should be 2.0.90]
0.95 0.95 95 0.95 [should be 2.0.95]
0.96 0.96 96 0.96 [should be 2.0.96]
0.97b 7") 1.00.97 97 1.0.1 [should be 2.0.97]
0.97b 1.00.97 97 1.0.1 [should be 2.0.97]
0.97c 0.97 97 2.0.97
0.98 0.98 98 2.0.98
0.99 0.99 98 2.0.99
0.99a-m 0.99 99 2.0.99
1.00 1.00 100 2.1.0 [should be 10000]
1.0.0 1.0.0 100 2.1.0 [should be 10000]
1.00 1.00 100 2.1.0 [int should be 10000]
1.0.0 1.0.0 100 2.1.0 [int should be 10000]
1.0.1 1.0.1 10001 2.1.0
Henceforth the source version will match the shared-library
@ -2312,7 +2312,7 @@ minor and patch numbers; the shared-library major version number will be
used for changes in backward compatibility, as it is intended.
The PNG_PNGLIB_VER macro, which is not used within libpng but
is available for applications, is an unsigned integer of the form
xyyzz corresponding to the source version x.y.z (leading zeros in y and z)
xyyzz corresponding to the source version x.y.z (leading zeros in y and z).
.SH "SEE ALSO"
libpngpf(3), png(5)
@ -2366,7 +2366,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.0.0b March 13, 1998:
Libpng version 1.0.1 March 15, 1998:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (randeg@alumni.rpi.edu).

2
libpng.txt
View File

@ -1,6 +1,6 @@
libpng.txt - A description on how to use and modify libpng
libpng version 1.0.0b March 13, 1998
libpng version 1.0.1 March 15, 1998
Updated and distributed by Glenn Randers-Pehrson
<randeg@alumni.rpi.edu>
Copyright (c) 1998, Glenn Randers-Pehrson

2
libpngpf.3
View File

@ -1,4 +1,4 @@
.TH LIBPNGPF 3 "March 13, 1998"
.TH LIBPNGPF 3 "March 15, 1998"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library
(private functions)

2
png.5
View File

@ -1,4 +1,4 @@
.TH PNG 5 "March 13, 1998"
.TH PNG 5 "March 15, 1998"
.SH NAME
png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION

6
png.c
View File

@ -1,12 +1,12 @@
/* png.c - location for general purpose libpng functions
*
* 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
@ -16,7 +16,7 @@
/* Version information for C files. This had better match the version
* string defined in png.h.
*/
char png_libpng_ver[12] = "1.0.0b";
char png_libpng_ver[12] = "1.0.1";
/* Place to hold the signature string for a PNG file. */
png_byte FARDATA png_sig[8] = {137, 80, 78, 71, 13, 10, 26, 10};

14
png.h
View File

@ -1,12 +1,12 @@
/* png.h - header file for PNG reference library
*
* libpng 1.0.0b
* libpng 1.0.1
* For conditions of distribution and use, see the COPYRIGHT NOTICE below.
* 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
*
* Note about libpng version numbers:
*
@ -37,7 +37,7 @@
* used for changes in backward compatibility, as it is intended.
* The PNG_PNGLIB_VER macro, which is not used within libpng but
* is available for applications, is an unsigned integer of the form
* xyyzz corresponding to the source version x.y.z (leading zeros in y and z)
* xyyzz corresponding to the source version x.y.z (leading zeros in y and z).
*
*
* See libpng.txt for more information. The PNG specification is available
@ -118,13 +118,13 @@ extern "C" {
*/
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.0.0b"
#define PNG_LIBPNG_VER_STRING "1.0.1"
/* Gareful here. At one time, Guy wanted to use 082, but that would be octal.
* We must not include leading zeroes.
/* Careful here. At one time, Guy wanted to use 082, but that would be octal.
* We must not include leading zeros.
* Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
* version 1.0.0 was mis-numbered 100 instead of 10000). From
* version 1.0.1 it's xxyyzz, where x=major, y=minor, z-bugfix*/
* version 1.0.1 it's xxyyzz, where x=major, y=minor, z=bugfix */
#define PNG_LIBPNG_VER 10001 /* 1.0.1 */
/* variables declared in png.c - only it needs to define PNG_NO_EXTERN */

4
pngconf.h
View File

@ -1,12 +1,12 @@
/* pngconf.h - machine configurable file for 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
*/
/* Any machine specific code is near the front of this file, so if you

4
pngerror.c
View File

@ -1,12 +1,12 @@
/* pngerror.c - stub functions for i/o and memory allocation
*
* 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 error handling. Users which
* need special error handling are expected to write replacement functions

4
pngget.c
View File

@ -1,12 +1,12 @@
/* pngget.c - retrieval of values from info struct
*
* 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
pngmem.c
View File

@ -1,12 +1,12 @@
/* pngmem.c - stub functions for memory allocation
*
* 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 memory allocation. Users which
* need special memory handling are expected to modify the code in this file

4
pngpread.c
View File

@ -1,12 +1,12 @@
/* pngpread.c - read a png file in push mode
*
* 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

6
pngread.c
View File

@ -1,12 +1,12 @@
/* pngread.c - read 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
*
* This file contains routines that an application calls directly to
* read a PNG file or stream.
@ -123,7 +123,7 @@ png_read_init(png_structp png_ptr)
}
/* Read the information before the actual image data. This has been
* changed in v0.90 to allow reading a file which already has the magic
* changed in v0.90 to allow reading a file that already has the magic
* bytes read from the stream. You can tell libpng how many bytes have
* been read from the beginning of the stream (up to the maxumum of 8)
* via png_set_sig_bytes(), and we will only check the remaining bytes

4
pngrio.c
View File

@ -1,12 +1,12 @@
/* pngrio.c - functions for data input
*
* 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 input. Users which need
* special handling are expected to write a function which has the same

31
pngrtran.c
View File

@ -1,12 +1,12 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
* 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 functions optionally called by an application
* in order to tell libpng how to handle data when reading a PNG.
@ -665,7 +665,6 @@ png_init_read_transformations(png_structp png_ptr)
if (png_ptr->transformations & PNG_INVERT_ALPHA)
{
#if defined(PNG_READ_EXPAND_SUPPORTED)
/* GRR BUG #1: was (png_ptr->transformations & !PNG_EXPAND) */
if (!(png_ptr->transformations & PNG_EXPAND))
#endif
{
@ -715,11 +714,6 @@ png_init_read_transformations(png_structp png_ptr)
{
double g, gs;
/*
GRR BUG #3: inconsistent with handling of full RGBA below
g = 1.0 / png_ptr->background_gamma;
gs = 1.0 / (png_ptr->background_gamma * png_ptr->screen_gamma);
*/
switch (png_ptr->background_gamma_type)
{
case PNG_BACKGROUND_GAMMA_SCREEN:
@ -740,17 +734,7 @@ png_init_read_transformations(png_structp png_ptr)
gs = 1.0; /* back */
}
if (
/*
GRR BUG #2: This creates self-inconsistent images--fully
transparent and fully opaque look fine, but translucent
pixels are wrong (too bright if XV's code can be trusted).
Commenting it out makes an internally self-consistent
image, but still not consistent with RGBA version of same
thing (again, too bright in XV).
png_ptr->background_gamma_type==PNG_BACKGROUND_GAMMA_SCREEN||
*/
fabs(gs - 1.0) < PNG_GAMMA_THRESHOLD)
if ( fabs(gs - 1.0) < PNG_GAMMA_THRESHOLD)
{
back.red = (png_byte)png_ptr->background.red;
back.green = (png_byte)png_ptr->background.green;
@ -1005,8 +989,7 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
#endif
#if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED)
if ((png_ptr->transformations & PNG_GRAY_TO_RGB) &&
!(info_ptr->color_type & PNG_COLOR_MASK_COLOR))
if (png_ptr->transformations & PNG_GRAY_TO_RGB)
info_ptr->color_type |= PNG_COLOR_MASK_COLOR;
#endif
@ -1018,12 +1001,8 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
info_ptr->channels = 1;
#if defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
if ((png_ptr->transformations & PNG_STRIP_ALPHA) &&
info_ptr->color_type & PNG_COLOR_MASK_ALPHA)
{
info_ptr->channels--;
if (png_ptr->transformations & PNG_STRIP_ALPHA)
info_ptr->color_type &= ~PNG_COLOR_MASK_ALPHA;
}
#endif
#if defined(PNG_READ_FILLER_SUPPORTED)

8
pngrutil.c
View File

@ -1,12 +1,12 @@
/* pngrutil.c - utilities to read 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
*
* This file contains routines which are only called from within
* libpng itself during the course of reading an image.
@ -1114,7 +1114,7 @@ png_handle_pCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
for (buf = units; *buf != 0x00; buf++)
/* Empty loop to move past the units string. */ ;
/* Empty loop to move past the units string. */ ;
png_debug(3, "Allocating pCAL parameters array\n");
params = (png_charpp)png_malloc(png_ptr, (png_uint_32)(nparams
@ -1127,7 +1127,7 @@ png_handle_pCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug1(3, "Reading pCAL parameter %d\n", i);
for (params[i] = buf; *buf != 0x00 && buf <= endptr; buf++)
/* Empty loop to move past each parameter string */ ;
/* Empty loop to move past each parameter string */ ;
/* Make sure we haven't run out of data yet */
if (buf > endptr)

4
pngset.c
View File

@ -1,12 +1,12 @@
/* pngset.c - storage of image information into info struct
*
* 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
*
* The functions here are used during reads to store data from the file
* into the info struct, and during writes to store application data

4
pngtest.c
View File

@ -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

4
pngtrans.c
View File

@ -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
View File

@ -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

4
pngwrite.c
View File

@ -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 */

4
pngwtran.c
View File

@ -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

4
pngwutil.c
View File

@ -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

11
scripts/makefile.s2x
View File

@ -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 \