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

Imported from libpng-1.2.7beta1.tar

Browse Source
This commit is contained in:
Glenn Randers-Pehrson
2004-08-25 22:00:45 -05:00
parent 37f116a900
commit a4981d4ded
72 changed files with 490 additions and 25673 deletions
Download Patch File Download Diff File Expand all files Collapse all files

53
libpng.3
View File

@@ -1,6 +1,6 @@
.TH LIBPNG 3 "August 15, 2004"
.TH LIBPNG 3 "August 26, 2004"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.6
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.7beta1
.SH SYNOPSIS
\fI\fB
@@ -773,7 +773,7 @@ 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 1.2.6 - August 15, 2004
libpng version 1.2.7beta1 - August 26, 2004
Updated and distributed by Glenn Randers-Pehrson
<glennrp@users.sourceforge.net>
Copyright (c) 1998-2004 Glenn Randers-Pehrson
@@ -810,19 +810,23 @@ Libpng was written as a companion to the PNG specification, as a way
of reducing the amount of time and effort it takes to support the PNG
file format in application programs.
The PNG-1.2 specification is available at <http://www.libpng.org/pub/png>
and at <ftp://ftp.uu.net/graphics/png/documents/>.
The PNG specification (second edition), November 2003, is available as
a W3C Recommendation and as an ISO Standard (ISO/IEC 15948:2003 (E)) at
<http://www.w3.org/TR/2003/REC-PNG-20031110/
The W3C and ISO documents have identical technical content.
The PNG-1.2 specification is available at
<http://www.libpng.org/pub/png/documents/>
The PNG-1.0 specification is available
as RFC 2083 <ftp://ftp.uu.net/graphics/png/documents/> and as a
as RFC 2083 <http://www.libpng.org/pub/png/documents/> and as a
W3C Recommendation <http://www.w3.org/TR/REC.png.html>. Some
additional chunks are described in the special-purpose public chunks
documents at <ftp://ftp.uu.net/graphics/png/documents/>.
documents at <http://www.libpng.org/pub/png/documents/>.
Other information
about PNG, and the latest version of libpng, can be found at the PNG home
page, <http://www.libpng.org/pub/png/>
and at <ftp://ftp.uu.net/graphics/png/>.
page, <http://www.libpng.org/pub/png/>.
Most users will not have to modify the library significantly; advanced
users may want to modify it more. All attempts were made to make it as
@@ -855,7 +859,6 @@ same instance of a structure. Note: thread safety may be defeated
by use of some of the MMX assembler code in pnggccrd.c, which is only
compiled when the user defines PNG_THREAD_UNSAFE_OK.
.SH II. Structures
There are two main structures that are important to libpng, png_struct
@@ -1170,6 +1173,9 @@ then png_read_image(), and finally png_read_end().
(The final parameter of this call is not yet used. Someday it might point
to transformation parameters required by some future input transform.)
You must use png_transforms and not call any png_set_transform() functions
when you use png_read_png().
After you have called png_read_png(), you can retrieve the image data
with
@@ -2770,6 +2776,9 @@ then png_write_image(), and finally png_write_end().
(The final parameter of this call is not yet used. Someday it might point
to transformation parameters required by some future output transform.)
You must use png_transforms and not call any png_set_transform() functions
when you use png_write_png().
.SS The low-level write interface
If you are going the low-level route instead, you are now ready to
@@ -3581,7 +3590,8 @@ this version of libpng, but if you insert some they will be printed.
%-%of optimized features, see contrib/gregbook/readpng2.c in the libpng
%-%source-code distribution.
%-%
.SH VI. MNG support
%-%.SH VII. MNG support
%+%.SH VI. MNG support
The MNG specification (available at http://www.libpng.org/pub/mng) allows
certain extensions to PNG for PNG images that are embedded in MNG datastreams.
@@ -3606,7 +3616,8 @@ or any other MNG chunks; your application must provide its own support for
them. You may wish to consider using libmng (available at
http://www.libmng.com) instead.
.SH VII. Changes to Libpng from version 0.88
%-%.SH VIII. Changes to Libpng from version 0.88
%+%.SH VII. Changes to Libpng from version 0.88
It should be noted that versions of libpng later than 0.96 are not
distributed by the original libpng author, Guy Schalnat, nor by
@@ -3655,15 +3666,16 @@ application:
png_uint_32 application_vn = PNG_LIBPNG_VER;
.SH VII. Y2K Compliance in libpng
%-%.SH IX. Y2K Compliance in libpng
%+%.SH VIII. Y2K Compliance in libpng
August 15, 2004
August 26, 2004
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
This is your unofficial assurance that libpng from version 0.71 and
upward through 1.2.6 are Y2K compliant. It is my belief that earlier
upward through 1.2.7beta1 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer that
@@ -3806,6 +3818,7 @@ the first widely used release:
1.2.6rc1-5 13 10206 12.so.0.1.2.6rc1-5
1.0.16 10 10016 10.so.0.1.0.16
1.2.6 13 10206 12.so.0.1.2.6
1.2.7beta1 13 10207 12.so.0.1.2.7beta1
Henceforth the source version will match the shared-library minor
and patch numbers; the shared-library major version number will be
@@ -3822,7 +3835,7 @@ libpngpf(3), png(5)
.LP
.IR libpng :
.IP
ftp://ftp.uu.net/graphics/png
http://libpng.sourceforge.net (follow the [DOWNLOAD] link)
http://www.libpng.org/pub/png
.LP
@@ -3832,8 +3845,6 @@ http://www.libpng.org/pub/png
.I libpng
or at
.br
ftp://ftp.uu.net/pub/archiving/zip/zlib
.br
ftp://ftp.info-zip.org/pub/infozip/zlib
.LP
@@ -3863,7 +3874,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.2.6 - August 15, 2004:
Libpng version 1.2.7beta1 - August 26, 2004:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (glennrp@users.sourceforge.net).
@@ -3880,7 +3891,7 @@ included in the libpng distribution, the latter shall prevail.)
If you modify libpng you may insert additional notices immediately following
this sentence.
libpng version 1.2.6, August 15, 2004, is
libpng version 1.2.6, August 26, 2004, is
Copyright (c) 2004 Glenn Randers-Pehrson, and is
distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors
@@ -3979,7 +3990,7 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
glennrp@users.sourceforge.net
August 15, 2004
August 26, 2004
.\" end of man page