mewin/libpng
1
0
Fork 0
mirror of https://git.code.sf.net/p/libpng/code.git synced 2025-07-10 18:04:09 +02:00
Code Issues Projects Releases Wiki Activity

[libpng16] Imported from libpng-1.6.19beta04.tar

Browse Source
This commit is contained in:
Glenn Randers-Pehrson 2015-10-14 22:15:01 -05:00
parent 59e655b020
commit 6ca8ee1518
15 changed files with 60 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
ANNOUNCE
View File

@ -1,4 +1,4 @@
Libpng 1.6.19beta04 - October 10, 2015
Libpng 1.6.19beta04 - October 15, 2015
This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version.
@ -92,7 +92,7 @@ Version 1.6.19beta03 [September 26, 2015]
warning, updated pngstest-errors.h for the errors detected with the
new contrib/testspngs PNG test files (John Bowler).
Version 1.6.19beta04 [October 10, 2015]
Version 1.6.19beta04 [October 15, 2015]
Worked around rgb-to-gray issues in libpng 1.6. The previous
attempts to ignore the errors in the code aren't quite enough to
deal with the 'channel selection' encoding added to libpng 1.7; abort.

2
CHANGES
View File

@ -5375,7 +5375,7 @@ Version 1.6.19beta03 [September 26, 2015]
warning, updated pngstest-errors.h for the errors detected with the
new contrib/testspngs PNG test files (John Bowler).
Version 1.6.19beta04 [October 10, 2015]
Version 1.6.19beta04 [October 15, 2015]
Worked around rgb-to-gray issues in libpng 1.6. The previous
attempts to ignore the errors in the code aren't quite enough to
deal with the 'channel selection' encoding added to libpng 1.7; abort.

4
LICENSE
View File

@ -10,7 +10,7 @@ this sentence.
This code is released under the libpng license.
libpng versions 1.0.7, July 1, 2000, through 1.6.19beta04, September 26, 2015, are
libpng versions 1.0.7, July 1, 2000, through 1.6.19beta04, October 15, 2015, are
Copyright (c) 2000-2002, 2004, 2006-2015 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.0.6
with the following individuals added to the list of Contributing Authors:
@ -104,4 +104,4 @@ the additional disclaimers inserted at version 1.0.7.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
September 26, 2015
October 15, 2015

2
README
View File

@ -1,4 +1,4 @@
README for libpng version 1.6.19beta04 - September 26, 2015 (shared library 16.0)
README for libpng version 1.6.19beta04 - October 15, 2015 (shared library 16.0)
See the note about version numbers near the top of png.h
See INSTALL for instructions on how to install libpng.

55
contrib/gregbook/readpng2.c
View File

@ -4,7 +4,7 @@
---------------------------------------------------------------------------
Copyright (c) 1998-2007 Greg Roelofs. All rights reserved.
Copyright (c) 1998-2015 Greg Roelofs. All rights reserved.
This software is provided "as is," without warranty of any kind,
express or implied. In no event shall the author or contributors
@ -51,6 +51,11 @@
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
---------------------------------------------------------------------------
Changelog:
%RDATE% - Check return value of png_get_bKGD() (Glenn R-P)
---------------------------------------------------------------------------*/
@ -261,36 +266,38 @@ static void readpng2_info_callback(png_structp png_ptr, png_infop info_ptr)
/* since we know we've read all of the PNG file's "header" (i.e., up
* to IDAT), we can check for a background color here */
if (mainprog_ptr->need_bgcolor &&
png_get_valid(png_ptr, info_ptr, PNG_INFO_bKGD))
if (mainprog_ptr->need_bgcolor)
{
png_color_16p pBackground;
/* it is not obvious from the libpng documentation, but this function
* takes a pointer to a pointer, and it always returns valid red,
* green and blue values, regardless of color_type: */
png_get_bKGD(png_ptr, info_ptr, &pBackground);
if (png_get_bKGD(png_ptr, info_ptr, &pBackground))
{
/* however, it always returns the raw bKGD data, regardless of any
* bit-depth transformations, so check depth and adjust if necessary */
if (bit_depth == 16) {
mainprog_ptr->bg_red = pBackground->red >> 8;
mainprog_ptr->bg_green = pBackground->green >> 8;
mainprog_ptr->bg_blue = pBackground->blue >> 8;
} else if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8) {
if (bit_depth == 1)
mainprog_ptr->bg_red = mainprog_ptr->bg_green =
mainprog_ptr->bg_blue = pBackground->gray? 255 : 0;
else if (bit_depth == 2)
mainprog_ptr->bg_red = mainprog_ptr->bg_green =
mainprog_ptr->bg_blue = (255/3) * pBackground->gray;
else /* bit_depth == 4 */
mainprog_ptr->bg_red = mainprog_ptr->bg_green =
mainprog_ptr->bg_blue = (255/15) * pBackground->gray;
} else {
mainprog_ptr->bg_red = (uch)pBackground->red;
mainprog_ptr->bg_green = (uch)pBackground->green;
mainprog_ptr->bg_blue = (uch)pBackground->blue;
/* however, it always returns the raw bKGD data, regardless of any
* bit-depth transformations, so check depth and adjust if necessary
*/
if (bit_depth == 16) {
mainprog_ptr->bg_red = pBackground->red >> 8;
mainprog_ptr->bg_green = pBackground->green >> 8;
mainprog_ptr->bg_blue = pBackground->blue >> 8;
} else if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8) {
if (bit_depth == 1)
mainprog_ptr->bg_red = mainprog_ptr->bg_green =
mainprog_ptr->bg_blue = pBackground->gray? 255 : 0;
else if (bit_depth == 2)
mainprog_ptr->bg_red = mainprog_ptr->bg_green =
mainprog_ptr->bg_blue = (255/3) * pBackground->gray;
else /* bit_depth == 4 */
mainprog_ptr->bg_red = mainprog_ptr->bg_green =
mainprog_ptr->bg_blue = (255/15) * pBackground->gray;
} else {
mainprog_ptr->bg_red = (uch)pBackground->red;
mainprog_ptr->bg_green = (uch)pBackground->green;
mainprog_ptr->bg_blue = (uch)pBackground->blue;
}
}
}

6
libpng-manual.txt
View File

@ -1,6 +1,6 @@
libpng-manual.txt - A description on how to use and modify libpng
libpng version 1.6.19beta04 - September 26, 2015
libpng version 1.6.19beta04 - October 15, 2015
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2015 Glenn Randers-Pehrson
@ -11,7 +11,7 @@ libpng-manual.txt - A description on how to use and modify libpng
Based on:
libpng versions 0.97, January 1998, through 1.6.19beta04 - September 26, 2015
libpng versions 0.97, January 1998, through 1.6.19beta04 - October 15, 2015
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2015 Glenn Randers-Pehrson
@ -5314,7 +5314,7 @@ Other rules can be inferred by inspecting the libpng source.
XVI. Y2K Compliance in libpng
September 26, 2015
October 15, 2015
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.

14
libpng.3
View File

@ -1,4 +1,4 @@
.TH LIBPNG 3 "September 26, 2015"
.TH LIBPNG 3 "October 15, 2015"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.19beta04
.SH SYNOPSIS
@ -508,7 +508,7 @@ Following is a copy of the libpng-manual.txt file that accompanies libpng.
.SH LIBPNG.TXT
libpng-manual.txt - A description on how to use and modify libpng
libpng version 1.6.19beta04 - September 26, 2015
libpng version 1.6.19beta04 - October 15, 2015
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2015 Glenn Randers-Pehrson
@ -519,7 +519,7 @@ libpng-manual.txt - A description on how to use and modify libpng
Based on:
libpng versions 0.97, January 1998, through 1.6.19beta04 - September 26, 2015
libpng versions 0.97, January 1998, through 1.6.19beta04 - October 15, 2015
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2015 Glenn Randers-Pehrson
@ -5822,7 +5822,7 @@ Other rules can be inferred by inspecting the libpng source.
.SH XVI. Y2K Compliance in libpng
September 26, 2015
October 15, 2015
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
@ -6143,7 +6143,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.6.19beta04 - September 26, 2015:
Libpng version 1.6.19beta04 - October 15, 2015:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
@ -6166,7 +6166,7 @@ this sentence.
This code is released under the libpng license.
libpng versions 1.0.7, July 1, 2000, through 1.6.19beta04, September 26, 2015, are
libpng versions 1.0.7, July 1, 2000, through 1.6.19beta04, October 15, 2015, are
Copyright (c) 2000-2002, 2004, 2006-2015 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.0.6
with the following individuals added to the list of Contributing Authors:
@ -6260,7 +6260,7 @@ the additional disclaimers inserted at version 1.0.7.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
September 26, 2015
October 15, 2015
.\" end of man page

2
libpngpf.3
View File

@ -1,4 +1,4 @@
.TH LIBPNGPF 3 "September 26, 2015"
.TH LIBPNGPF 3 "October 15, 2015"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.19beta04
(private functions)

2
png.5
View File

@ -1,4 +1,4 @@
.TH PNG 5 "September 26, 2015"
.TH PNG 5 "October 15, 2015"
.SH NAME
png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION

4
png.c
View File

@ -775,13 +775,13 @@ png_get_copyright(png_const_structrp png_ptr)
#else
# ifdef __STDC__
return PNG_STRING_NEWLINE \
"libpng version 1.6.19beta04 - September 26, 2015" PNG_STRING_NEWLINE \
"libpng version 1.6.19beta04 - October 15, 2015" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2015 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
PNG_STRING_NEWLINE;
# else
return "libpng version 1.6.19beta04 - September 26, 2015\
return "libpng version 1.6.19beta04 - October 15, 2015\
Copyright (c) 1998-2015 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";

10
png.h
View File

@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.6.19beta04, September 26, 2015
* libpng version 1.6.19beta04, October 15, 2015
*
* Copyright (c) 1998-2015 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -12,7 +12,7 @@
* Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
* libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.6.19beta04, September 26, 2015: Glenn
* libpng versions 0.97, January 1998, through 1.6.19beta04, October 15, 2015: Glenn
* See also "Contributing Authors", below.
*
* Note about libpng version numbers:
@ -251,7 +251,7 @@
*
* This code is released under the libpng license.
*
* libpng versions 1.0.7, July 1, 2000, through 1.6.19beta04, September 26, 2015, are
* libpng versions 1.0.7, July 1, 2000, through 1.6.19beta04, October 15, 2015, are
* Copyright (c) 2000-2002, 2004, 2006-2015 Glenn Randers-Pehrson, and are
* distributed according to the same disclaimer and license as libpng-1.0.6
* with the following individuals added to the list of Contributing Authors:
@ -360,7 +360,7 @@
* Y2K compliance in libpng:
* =========================
*
* September 26, 2015
* October 15, 2015
*
* Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration.
@ -430,7 +430,7 @@
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.6.19beta04"
#define PNG_HEADER_VERSION_STRING \
" libpng version 1.6.19beta04 - September 26, 2015\n"
" libpng version 1.6.19beta04 - October 15, 2015\n"
#define PNG_LIBPNG_VER_SONUM 16
#define PNG_LIBPNG_VER_DLLNUM 16

2
projects/vstudio/readme.txt
View File

@ -1,7 +1,7 @@
VisualStudio instructions
libpng version 1.6.19beta04 - September 26, 2015
libpng version 1.6.19beta04 - October 15, 2015
Copyright (c) 1998-2010 Glenn Randers-Pehrson

2
projects/vstudio/zlib.props
View File

@ -2,7 +2,7 @@
<!--
* zlib.props - location of zlib source
*
* libpng version 1.6.19beta04 - September 26, 2015
* libpng version 1.6.19beta04 - October 15, 2015
*
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
*

2
scripts/README.txt
View File

@ -1,5 +1,5 @@
Makefiles for libpng version 1.6.19beta04 - September 26, 2015
Makefiles for libpng version 1.6.19beta04 - October 15, 2015
pnglibconf.h.prebuilt => Stores configuration settings
makefile.linux => Linux/ELF makefile

2
scripts/pnglibconf.h.prebuilt
View File

@ -2,7 +2,7 @@
/* pnglibconf.h - library build configuration */
/* Libpng version 1.6.19beta04 - September 26, 2015 */
/* Libpng version 1.6.19beta04 - October 15, 2015 */
/* Copyright (c) 1998-2014 Glenn Randers-Pehrson */