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Imported from libpng-1.0.9beta2.tar

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This commit is contained in:
Glenn Randers-Pehrson 2000-11-18 18:19:14 -06:00
parent fbbb5ecb52
commit f5ed0e130c
70 changed files with 1269 additions and 1711 deletions
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25
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.0.9beta10 - January 16, 2001
Libpng 1.0.9beta2 - November 19, 2000
This is a public release of libpng, intended for use in production codes.
@ -28,29 +28,6 @@ Changes since the last public release (1.0.8):
subdirectory and added projects/borland project subdirectory.
Set VS_FF_PRERELEASE and VS_FF_PATCHED flags in msvc/png.rc when appropriate.
Add error message in png_set_compression_buffer_size() when malloc fails.
Revised PNG_LIBPNG_BUILD_TYPE macro in png.h, used in the msvc project.
Removed the png_flush() in pngwrite.c that crashes some applications
that don't set png_output_flush_fn.
Added makefile.macosx and makefile.aix to scripts directory.
Change png_chunk_warning to png_warning in png_check_keyword().
Increased the first part of msg buffer from 16 to 18 in png_chunk_error().
Added support for filter method 64 (for PNG datastreams embedded in MNG)
Revised png_set_filter() to accept filter method 64 when appropriate.
Added new PNG_HAVE_PNG_SIGNATURE bit to png_ptr->mode and use it to
help prevent applications from using MNG features in PNG datastreams.
Revised libpng.3/libpng.txt. Changed "filter type" to "filter method".
Fixed error handling of unknown compression type in png_decompress_chunk().
In pngconf.h, define __cdecl when _MSC_VER is defined.
Changed PNG_TEXT_COMPRESSION_zTXt to PNG_COMPRESSION_TYPE_BASE several places.
Revised memory management in png_set_hIST and png_handle_hIST in a backward
compatible manner. PLTE and tRNS were revised similarly.
Revised the iCCP chunk reader to ignore trailing garbage.
Moved pngasmrd.h into pngconf.h.
Improved handling of out-of-spec garbage iCCP chunks generated by PhotoShop.
Added png_set_invalid, png_permit_mng_features, and png_mmx_supported to
wince and msvc project module definition files.
Fixed bug with progressive reading of narrow interlaced images in pngpread.c
Do not typedef png_FILE_io in pngconf.h when PNG_NO_STDIO is defined.
Send comments/corrections/commendations to
png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu

36
CHANGES
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@ -798,6 +798,7 @@ version 1.0.7rc2 [June 28, 2000]
Fixed "DJBPP" typo in pnggccrd.c introduced in beta18.
version 1.0.7 [July 1, 2000]
Revised the definition of "trans_values" in libpng.3/libpng.txt
version 1.0.9beta2 [November 19, 2000]
version 1.0.8beta1 [July 8, 2000]
Added png_free(png_ptr, key) two places in pngpread.c to stop memory leaks.
Changed PNG_NO_STDIO to PNG_NO_CONSOLE_IO, several places in pngrutil.c and
@ -847,41 +848,6 @@ version 1.0.9beta2 [November 19, 2000]
Added borland project files to "projects" subdirectory.
Set VS_FF_PRERELEASE and VS_FF_PATCHED flags in msvc/png.rc when appropriate.
Add error message in png_set_compression_buffer_size() when malloc fails.
version 1.0.9beta3 [November 23, 2000]
Revised PNG_LIBPNG_BUILD_TYPE macro in png.h, used in the msvc project.
Removed the png_flush() in pngwrite.c that crashes some applications
that don't set png_output_flush_fn.
Added makefile.macosx and makefile.aix to scripts directory.
version 1.0.9beta4 [December 1, 2000]
Change png_chunk_warning to png_warning in png_check_keyword().
Increased the first part of msg buffer from 16 to 18 in png_chunk_error().
version 1.0.9beta5 [December 15, 2000]
Added support for filter method 64 (for PNG datastreams embedded in MNG)
version 1.0.9beta6 [December 18, 2000]
Revised png_set_filter() to accept filter method 64 when appropriate.
Added new PNG_HAVE_PNG_SIGNATURE bit to png_ptr->mode and use it to
help prevent applications from using MNG features in PNG datastreams.
Revised libpng.3/libpng.txt. Changed "filter type" to "filter method".
version 1.0.9rc1 [December 23, 2000]
Revised test for PNG_HAVE_PNG_SIGNATURE in pngrutil.c
Fixed error handling of unknown compression type in png_decompress_chunk().
In pngconf.h, define __cdecl when _MSC_VER is defined.
version 1.0.9beta7 [December 28, 2000]
Changed PNG_TEXT_COMPRESSION_zTXt to PNG_COMPRESSION_TYPE_BASE several places.
Revised memory management in png_set_hIST and png_handle_hIST in a backward
compatible manner. PLTE and tRNS were revised similarly.
Revised the iCCP chunk reader to ignore trailing garbage.
version 1.0.9beta8 [January 12, 2001]
Moved pngasmrd.h into pngconf.h.
Improved handling of out-of-spec garbage iCCP chunks generated by PhotoShop.
version 1.0.9beta9 [January 15, 2001]
Added png_set_invalid, png_permit_mng_features, and png_mmx_supported to
wince and msvc project module definition files.
Minor revision of makefile.cygwin.
Fixed bug with progressive reading of narrow interlaced images in pngpread.c
version 1.0.9beta10 [January 16, 2001]
Do not typedef png_FILE_io in pngconf.h when PNG_NO_STDIO is defined.
Fixe "png_mmx_supported" typo in project definition files
Send comments/corrections/commendations to
png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu

14
INSTALL
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@ -1,5 +1,5 @@
Installing libpng version 1.0.9beta10 - January 16, 2001
Installing libpng version 1.0.9beta2 - November 19, 2000
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-1.0.9beta10" or "lpng109" and "zlib-1.1.3"
might be called "libpng-1.0.9beta2" or "lpng109" and "zlib-1.1.3"
or "zlib113") so that you have directories called "zlib" and "libpng".
Your directory structure should look like this:
@ -59,25 +59,23 @@ The files that are presently available in the scripts directory
include
makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.linux => Linux/ELF makefile (gcc, creates libpng.so.2.1.0.9beta10)
makefile.gcmmx => Linux/ELF makefile (gcc, creates libpng.so.2.1.0.9beta10,
makefile.linux => Linux/ELF makefile (gcc, creates libpng.so.2.1.0.9beta2)
makefile.gcmmx => Linux/ELF makefile (gcc, creates libpng.so.2.1.0.9beta2,
uses assembler code tuned for Intel MMX platform)
makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with
ansi2knr (Requires ansi2knr.c from
ftp://ftp.cs.wisc.edu/ghost)
makefile.aix => AIX makefile
makefile.cygwin => Cygwin/gcc makefile
makefile.dec => DEC Alpha UNIX makefile
makefile.hpux => HPUX (10.20 and 11.00) makefile
makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static)
makefile.intel => Intel C/C++ version 4.0 and later
libpng.icc => Project file for IBM VisualAge/C++ version 4.0 or later
makefile.macosx => MACOS X Makefile
makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.0.9beta10)
makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.0.9beta2)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile (gcc, creates libpng.so.2.1.0.9beta10)
makefile.solaris => Solaris 2.X makefile (gcc, creates libpng.so.2.1.0.9beta2)
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
makefile.mips => MIPS makefile
makefile.acorn => Acorn makefile

66
KNOWNBUG
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@ -1,9 +1,65 @@
Known bugs in libpng-1.0.9
Known bugs and suggested enhancements in libpng-1.0.8
1: January 16, 2001 -- BUG -- progressive reading narrow interlaced PNGs
0: November 3, 2000 -- BUG -- incorrect iCCP chunk is written
A crash occurs in Mozilla when reading a 2x533 interlaced RGB image.
The compression_type byte in the iCCP chunk written by libpng is
usually incorrect.
Status: Fixed in libpng-1.0.9beta1
1. October 12, 2000 -- BUG -- pngtest fails
The three WRITEFILE calls in pngtest.c are incorrect. They must be
changed to read
WRITEFILE((png_FILE_p)png_ptr->io_ptr, data, length, check);
WRITEFILE(io_ptr, near_data, length, check);
WRITEFILE(io_ptr, buf, written, err);
2. August 28, 2000 -- BUG -- pnggccrd.c
The interlacing() function has still not been fully converted and
will not compile under gcc-2.95.2; it is currently ifdef'ed out.
STATUS: Fixed in libpng-1.0.9. There were also bugs in pngvcrd.c
which have been fixed. The replacement files are available at the
PNG web site (http://www.libpng.org/pub/png).
3. March 15, 1998 -- OPTIMIZATION -- Kevin Bracey
Loops need to be optimized everywhere
Make them count down instead of up -- Kevin Bracey
Optimizing compilers don't need this, and making
the change would be error prone -- Tom Lane, Glenn R-P
Question whether i-- or --i is better.
STATUS: Under investigation, postponed until after
libpng-2.0.0. About 160 loops will be turned around
in libpng-2.0.x betaxx, for testing.
4. July 4, 1998 -- ENHANCEMENT -- Glenn R-P
libpng-1.0.5 and earlier transform colors to gamma=1.0 space for
merging with background, and then back to the image's gamma. The
bit_depth of the intermediate (gamma=1.0) representation is probably
not sufficient. In the typical gamma=1/2.2 situation, the linear
pixels need about 4 more bits than the gamma-encoded ones, to avoid
loss of precision. A similar situation exists with the rgb_to_gray
operation.
STATUS: under development.
5. September 1999 -- ENHANCEMENT --
It should be possible to use libpng without floating-point arithmetic.
STATUS: Under investigation, implementation postponed until after
libpng-2.0.0.
Much of this was completed in libpng-1.0.6, but gamma compensation
is not yet done in fixed-point arithmetic.
Status: Under investigation. It appears that pngpread.c is not
taking care to skip empty passes.

4
LICENSE
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@ -8,7 +8,7 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
If you modify libpng you may insert additional notices immediately following
this sentence.
libpng versions 1.0.7, July 1, 2000, through 1.0.9beta10, January 16, 2001, are
libpng versions 1.0.7, July 1, 2000, through 1.0.9beta2, November 19, 2000, are
Copyright (c) 2000 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
@ -99,4 +99,4 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
randeg@alum.rpi.edu
January 16, 2001
November 19, 2000

12
README
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@ -1,4 +1,4 @@
README for libpng 1.0.9beta10 - January 16, 2001 (shared library 2.1)
README for libpng 1.0.9beta2 - November 19, 2000 (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.
@ -182,27 +182,25 @@ Files in this distribution:
descrip.mms => VMS makefile for MMS or MMK
makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.linux => Linux/ELF makefile
(gcc, creates libpng.so.2.1.0.9beta10)
(gcc, creates libpng.so.2.1.0.9beta2)
makefile.gcmmx => Linux/ELF makefile (gcc, creates
libpng.so.2.1.0.9beta10, uses assembler code
libpng.so.2.1.0.9beta2, uses assembler code
tuned for Intel MMX platform)
makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with
ansi2knr (Requires ansi2knr.c from
ftp://ftp.cs.wisc.edu/ghost)
makefile.aix => AIX makefile
makefile.cygwin => Cygwin/gcc makefile
makefile.dec => DEC Alpha UNIX makefile
makefile.hpux => HPUX (10.20 and 11.00) makefile
makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static)
makefile.intel => Intel C/C++ version 4.0 and later
libpng.icc => Project file, IBM VisualAge/C++ 4.0 or later
makefile.macosx => MACOS X Makefile
makefile.sgi => Silicon Graphics IRIX (cc, creates static lib)
makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.0.9beta10)
makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.0.9beta2)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile
(gcc, creates libpng.so.2.1.0.9beta10)
(gcc, creates libpng.so.2.1.0.9beta2)
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
makefile.mips => MIPS makefile
makefile.acorn => Acorn makefile

5
TODO
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@ -17,8 +17,3 @@ Better filter selection
(counting huffman bits/precompression? filter inertia? filter costs?).
Histogram creation.
Text conversion between different code pages (Latin-1 -> Mac and DOS).
Should we always malloc 2^bit_depth PLTE/tRNS/hIST entries for safety?
Build gamma tables using fixed point (and do away with floating point entirely).
Use greater precision when changing to linear gamma for compositing against
background and doing rgb-to-gray transformation.
Investigate pre-incremented loop counters and other loop constructions.

4
Y2KINFO
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@ -1,13 +1,13 @@
Y2K compliance in libpng:
=========================
January 16, 2001
November 19, 2000
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 1.0.9beta10 are Y2K compliant. It is my belief that earlier
upward through 1.0.9beta2 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

2
configure vendored
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@ -1,5 +1,5 @@
echo "
There is no \"configure\" script for Libpng-1.0.9beta10. Instead, please
There is no \"configure\" script for Libpng-1.0.9beta2. Instead, please
copy the appropriate makefile for your system from the \"scripts\"
directory. Read the INSTALL file for more details.
"

102
contrib/gregbook/Makefile.sgi
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@ -1,102 +0,0 @@
# Sample makefile for rpng-x / rpng2-x / wpng for SGI using cc and make.
# Greg Roelofs
# Last modified: 16 January 1000
#
# The programs built by this makefile are described in the book,
# "PNG: The Definitive Guide," by Greg Roelofs (O'Reilly and
# Associates, 1999). Go buy a copy, eh? Buy some for friends
# and family, too. (Not that this is a blatant plug or anything.)
#
# Invoke this makefile from a shell prompt in the usual way; for example:
#
# make -f Makefile.sgi
#
# This makefile assumes libpng and zlib have already been built or downloaded
# and are both installed in /usr/local/{include,lib} (as indicated by the
# PNG* and Z* macros below). Edit as appropriate--choose only ONE each of
# the PNGINC, PNGLIB, ZINC and ZLIB lines.
#
# This makefile builds dynamically linked executables (against libpng and zlib,
# that is), but that can be changed by uncommenting the appropriate PNGLIB and
# ZLIB lines.
# macros --------------------------------------------------------------------
PNGINC = -I/usr/local/include
PNGLIB = -L/usr/local/lib -lpng # dynamically linked against libpng
#PNGLIB = /usr/local/lib/libpng.a # statically linked against libpng
# or:
#PNGINC = -I../..
#PNGLIB = -L../.. -lpng
#PNGLIB = ../../libpng.a
ZINC = -I/usr/local/include
ZLIB = -L/usr/local/lib -lz # dynamically linked against zlib
#ZLIB = /usr/local/lib/libz.a # statically linked against zlib
#ZINC = -I../zlib
#ZLIB = -L../zlib -lz
#ZLIB = ../../../zlib/libz.a
XINC = -I/usr/include/X11 # old-style, stock X distributions
XLIB = -L/usr/lib/X11 -lX11
#XINC = -I/usr/openwin/include # Sun workstations (OpenWindows)
#XLIB = -L/usr/openwin/lib -lX11
#XINC = -I/usr/X11R6/include # new X distributions (XFree86, etc.)
#XLIB = -L/usr/X11R6/lib -lX11
INCS = $(PNGINC) $(ZINC) $(XINC)
RLIBS = $(PNGLIB) $(ZLIB) $(XLIB) -lm
WLIBS = $(PNGLIB) $(ZLIB)
CC = cc
LD = cc
RM = rm -f
CFLAGS = -O -fullwarn $(INCS)
LDFLAGS =
O = .o
E =
RPNG = rpng-x
RPNG2 = rpng2-x
WPNG = wpng
ROBJS = $(RPNG)$(O) readpng$(O)
ROBJS2 = $(RPNG2)$(O) readpng2$(O)
WOBJS = $(WPNG)$(O) writepng$(O)
EXES = $(RPNG)$(E) $(RPNG2)$(E) $(WPNG)$(E)
# implicit make rules -------------------------------------------------------
.c$(O):
$(CC) -c $(CFLAGS) $<
# dependencies --------------------------------------------------------------
all: $(EXES)
$(RPNG)$(E): $(ROBJS)
$(LD) $(LDFLAGS) -o $@ $(ROBJS) $(RLIBS)
$(RPNG2)$(E): $(ROBJS2)
$(LD) $(LDFLAGS) -o $@ $(ROBJS2) $(RLIBS)
$(WPNG)$(E): $(WOBJS)
$(LD) $(LDFLAGS) -o $@ $(WOBJS) $(WLIBS)
$(RPNG)$(O): $(RPNG).c readpng.h
$(RPNG2)$(O): $(RPNG2).c readpng2.h
$(WPNG)$(O): $(WPNG).c writepng.h
readpng$(O): readpng.c readpng.h
readpng2$(O): readpng2.c readpng2.h
writepng$(O): writepng.c writepng.h
# maintenance ---------------------------------------------------------------
clean:
$(RM) $(EXES) $(ROBJS) $(ROBJS2) $(WOBJS)

4
contrib/gregbook/readpng2.c
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@ -4,7 +4,7 @@
---------------------------------------------------------------------------
Copyright (c) 1998-2001 Greg Roelofs. All rights reserved.
Copyright (c) 1998-2000 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
@ -51,7 +51,6 @@ void readpng2_version_info(void)
{
fprintf(stderr, " Compiled with libpng %s; using libpng %s.\n",
PNG_LIBPNG_VER_STRING, png_libpng_ver);
fprintf(stderr, " Compiled with zlib %s; using zlib %s.\n",
ZLIB_VERSION, zlib_version);
}
@ -111,6 +110,7 @@ int readpng2_init(mainprog_info *mainprog_ptr)
png_set_progressive_read_fn(png_ptr, mainprog_ptr,
readpng2_info_callback, readpng2_row_callback, readpng2_end_callback);
/* make sure we save our pointers for use in readpng2_decode_data() */
mainprog_ptr->png_ptr = png_ptr;

7
contrib/gregbook/readpng2.h
View File

@ -4,7 +4,7 @@
---------------------------------------------------------------------------
Copyright (c) 1998-2001 Greg Roelofs. All rights reserved.
Copyright (c) 1998-2000 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
@ -66,11 +66,6 @@ typedef struct _mainprog_info {
int rowbytes;
int channels;
int need_bgcolor;
#if (defined(__i386__) || defined(_M_IX86))
int nommxfilters;
int nommxcombine;
int nommxinterlace;
#endif
int done;
uch bg_red;
uch bg_green;

60
contrib/gregbook/rpng2-win.c
View File

@ -11,6 +11,7 @@
Meulen for the "diamond" and "radial waves" patterns, respectively.
to do:
- stdout/stderr don't work! need message window (maybe scrollable?)
- handle quoted command-line args (especially filenames with spaces)
- finish resizable checkerboard-gradient (sizes 4-128?)
- use %.1023s to simplify truncation of title-bar string?
@ -24,12 +25,10 @@
- 1.03: modified to allow abbreviated options
- 1.04: removed bogus extra argument from usage fprintf() [Glenn R-P?];
fixed command-line parsing bug
- 1.10: enabled "message window" (console), thanks to David Geldreich
- 1.20: added runtime MMX-enabling/disabling and new -mmx* options
---------------------------------------------------------------------------
Copyright (c) 1998-2001 Greg Roelofs. All rights reserved.
Copyright (c) 1998-2000 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
@ -56,7 +55,7 @@
#define PROGNAME "rpng2-win"
#define LONGNAME "Progressive PNG Viewer for Windows"
#define VERSION "1.20 of 4 January 2001"
#define VERSION "1.04 of 19 March 2000"
#include <stdio.h>
#include <stdlib.h>
@ -65,7 +64,6 @@
#include <time.h>
#include <math.h> /* only for PvdM background code */
#include <windows.h>
#include <conio.h> /* only for _getch() */
/* all for PvdM background code: */
#ifndef PI
@ -241,16 +239,6 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
memset(&rpng2_info, 0, sizeof(mainprog_info));
/* Next reenable console output, which normally goes to the bit bucket
* for windowed apps. Closing the console window will terminate the
* app. Thanks to David.Geldreich@realviz.com for supplying the magical
* incantation. */
AllocConsole();
freopen("CONOUT$", "a", stderr);
freopen("CONOUT$", "a", stdout);
/* Set the default value for our display-system exponent, i.e., the
* product of the CRT exponent and the exponent corresponding to
* the frame-buffer's lookup table (LUT), if any. This is not an
@ -366,14 +354,6 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
}
} else if (!strncmp(*argv, "-timing", 2)) {
timing = TRUE;
#if (defined(__i386__) || defined(_M_IX86))
} else if (!strncmp(*argv, "-nommxfilters", 7)) {
rpng2_info.nommxfilters = TRUE;
} else if (!strncmp(*argv, "-nommxcombine", 7)) {
rpng2_info.nommxcombine = TRUE;
} else if (!strncmp(*argv, "-nommxinterlace", 7)) {
rpng2_info.nommxinterlace = TRUE;
#endif
} else {
if (**argv != '-') {
filename = *argv;
@ -421,47 +401,25 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
/* usage screen */
if (error) {
int ch;
fprintf(stderr, "\n%s %s: %s\n\n", PROGNAME, VERSION, appname);
fprintf(stderr, "\n%s %s: %s\n", PROGNAME, VERSION, appname);
readpng2_version_info();
fprintf(stderr, "\n"
"Usage: %s [-gamma exp] [-bgcolor bg | -bgpat pat] [-timing]\n"
#if (defined(__i386__) || defined(_M_IX86))
" %*s [-nommxfilters] [-nommxcombine] [-nommxinterlace]\n"
#endif
" %*s file.png\n\n"
"Usage: %s [-gamma exp] [-bgcolor bg | -bgpat pat] [-timing]"
" file.png\n\n"
" exp \ttransfer-function exponent (``gamma'') of the display\n"
"\t\t system in floating-point format (e.g., ``%.1f''); equal\n"
"\t\t to the product of the lookup-table exponent (varies)\n"
"\t\t and the CRT exponent (usually 2.2); must be positive\n"
" bg \tdesired background color in 7-character hex RGB format\n"
"\t\t (e.g., ``#ff7700'' for orange: same as HTML colors);\n"
"\t\t used with transparent images; overrides -bgpat option\n"
"\t\t used with transparent images; overrides -bgpat\n"
" pat \tdesired background pattern number (1-%d); used with\n"
"\t\t transparent images; overrides -bgcolor option\n"
"\t\t transparent images; overrides -bgcolor\n"
" -timing\tenables delay for every block read, to simulate modem\n"
"\t\t download of image (~36 Kbps)\n"
#if (defined(__i386__) || defined(_M_IX86))
" -nommx*\tdisable optimized MMX routines for decoding row filters,\n"
"\t\t combining rows, and expanding interlacing, respectively\n"
#endif
"\nPress Q, Esc or mouse button 1 after image is displayed to quit.\n"
"Press Q or Esc to quit this usage screen.\n"
"\n", PROGNAME,
#if (defined(__i386__) || defined(_M_IX86))
strlen(PROGNAME), " ",
#endif
strlen(PROGNAME), " ", default_display_exponent, num_bgpat);
do
ch = _getch();
while (ch != 'q' && ch != 'Q' && ch != 0x1B);
"\n", PROGNAME, default_display_exponent, num_bgpat);
exit(1);
} else {
fprintf(stderr, "\n%s %s: %s\n", PROGNAME, VERSION, appname);
fprintf(stderr,
"\n [console window: closing this window will terminate %s]\n\n",
PROGNAME);
}

29
contrib/gregbook/rpng2-x.c
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@ -25,11 +25,10 @@
- 1.10: added support for non-default visuals; fixed X pixel-conversion
- 1.11: added -usleep option for demos; fixed command-line parsing bug
- 1.12: added -pause option for demos and testing
- 1.20: added runtime MMX-enabling/disabling and new -mmx* options
---------------------------------------------------------------------------
Copyright (c) 1998-2001 Greg Roelofs. All rights reserved.
Copyright (c) 1998-2000 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
@ -56,7 +55,7 @@
#define PROGNAME "rpng2-x"
#define LONGNAME "Progressive PNG Viewer for X"
#define VERSION "1.20 of 4 January 2001"
#define VERSION "1.12 of 19 March 2000"
#include <stdio.h>
#include <stdlib.h>
@ -360,14 +359,6 @@ int main(int argc, char **argv)
pause_after_pass = TRUE;
} else if (!strncmp(*argv, "-timing", 2)) {
timing = TRUE;
#if (defined(__i386__) || defined(_M_IX86))
} else if (!strncmp(*argv, "-nommxfilters", 7)) {
rpng2_info.nommxfilters = TRUE;
} else if (!strncmp(*argv, "-nommxcombine", 7)) {
rpng2_info.nommxcombine = TRUE;
} else if (!strncmp(*argv, "-nommxinterlace", 7)) {
rpng2_info.nommxinterlace = TRUE;
#endif
} else {
if (**argv != '-') {
filename = *argv;
@ -423,13 +414,10 @@ int main(int argc, char **argv)
/* usage screen */
if (error) {
fprintf(stderr, "\n%s %s: %s\n\n", PROGNAME, VERSION, appname);
fprintf(stderr, "\n%s %s: %s\n", PROGNAME, VERSION, appname);
readpng2_version_info();
fprintf(stderr, "\n"
"Usage: %s [-display xdpy] [-gamma exp] [-bgcolor bg | -bgpat pat]\n"
#if (defined(__i386__) || defined(_M_IX86))
" %*s [-nommxfilters] [-nommxcombine] [-nommxinterlace]\n"
#endif
" %*s [-usleep dur | -timing] [-pause] file.png\n\n"
" xdpy\tname of the target X display (e.g., ``hostname:0'')\n"
" exp \ttransfer-function exponent (``gamma'') of the display\n"
@ -441,10 +429,6 @@ int main(int argc, char **argv)
"\t\t used with transparent images; overrides -bgpat\n"
" pat \tdesired background pattern number (1-%d); used with\n"
"\t\t transparent images; overrides -bgcolor\n"
#if (defined(__i386__) || defined(_M_IX86))
" -nommx*\tdisable optimized MMX routines for decoding row filters,\n"
"\t\t combining rows, and expanding interlacing, respectively\n"
#endif
" dur \tduration in microseconds to wait after displaying each\n"
"\t\t row (for demo purposes)\n"
" -timing\tenables delay for every block read, to simulate modem\n"
@ -452,11 +436,8 @@ int main(int argc, char **argv)
" -pause\tpauses after displaying each pass until key pressed\n"
"\nPress Q, Esc or mouse button 1 (within image window, after image\n"
"is displayed) to quit.\n"
"\n", PROGNAME,
#if (defined(__i386__) || defined(_M_IX86))
strlen(PROGNAME), " ",
#endif
strlen(PROGNAME), " ", default_display_exponent, num_bgpat);
"\n", PROGNAME, strlen(PROGNAME), " ", default_display_exponent,
num_bgpat);
exit(1);
}

6
example.c
View File

@ -267,7 +267,7 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */
*/
if (color_type & PNG_COLOR_MASK_COLOR)
{
int num_palette;
png_uint_32 num_palette;
png_colorp palette;
/* This reduces the image to the application supplied palette */
@ -603,9 +603,9 @@ void write_png(char *file_name /* , ... other image information ... */)
PNG_INTERLACE_????, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
/* set the palette if there is one. REQUIRED for indexed-color images */
palette = (png_colorp)png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH * sizeof (png_color));
palette = (png_colorp)png_malloc(png_ptr, 256 * sizeof (png_color));
/* ... set palette colors ... */
png_set_PLTE(png_ptr, info_ptr, palette, PNG_MAX_PALETTE_LENGTH);
png_set_PLTE(png_ptr, info_ptr, palette, 256);
/* You must not free palette here, because png_set_PLTE only makes a link to
the palette that you malloced. Wait until you are about to destroy
the png structure. */

114
libpng.3
View File

@ -1,6 +1,6 @@
.TH LIBPNG 3 "January 16, 2001"
.TH LIBPNG 3 "November 19, 2000"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.0.9beta10
libpng \- Portable Network Graphics (PNG) Reference Library 1.0.9beta2
.SH SYNOPSIS
\fI\fB
@ -100,10 +100,6 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.9beta10
\fI\fB
\fBpng_uint_32 png_get_asm_flags (png_structp \fIpng_ptr\fP\fB);\fP
\fI\fB
\fBpng_byte png_get_bit_depth (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
\fI\fB
@ -338,10 +334,6 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.9beta10
\fI\fB
\fBint png_mmx_support \fI(void\fP\fB);\fP
\fI\fB
\fBvoid png_permit_empty_plte (png_structp \fP\fIpng_ptr\fP\fB, int \fIempty_plte_permitted\fP\fB);\fP
\fI\fB
@ -392,10 +384,6 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.9beta10
\fI\fB
\fBpng_set_asm_flags (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIasm_flags\fP\fB);\fP
\fI\fB
\fBvoid png_set_background (png_structp \fP\fIpng_ptr\fP\fB, png_color_16p \fP\fIbackground_color\fP\fB, int \fP\fIbackground_gamma_code\fP\fB, int \fP\fIneed_expand\fP\fB, double \fIbackground_gamma\fP\fB);\fP
\fI\fB
@ -759,7 +747,7 @@ 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 1.0.9beta10 - January 16, 2001
libpng version 1.0.9beta2 - November 19, 2000
Updated and distributed by Glenn Randers-Pehrson
<randeg@alum.rpi.edu>
Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
@ -826,7 +814,7 @@ majority of the needs of its users.
Libpng uses zlib for its compression and decompression of PNG files.
Further information about zlib, and the latest version of zlib, can
be found at the zlib home page, <http://www.info-zip.org/pub/infozip/zlib/>.
be found at the zlib home page, <ftp://ftp.freesoftware.com/pub/infozip/zlib/>.
The zlib compression utility is a general purpose utility that is
useful for more than PNG files, and can be used without libpng.
See the documentation delivered with zlib for more details.
@ -1159,7 +1147,7 @@ in until png_read_end() has read the chunk data following the image.
png_get_IHDR(png_ptr, info_ptr, &width, &height,
&bit_depth, &color_type, &interlace_type,
&compression_type, &filter_method);
&compression_type, &filter_type);
width - holds the width of the image
in pixels (up to 2^31).
@ -1187,18 +1175,15 @@ in until png_read_end() has read the chunk data following the image.
PNG_COLOR_MASK_COLOR
PNG_COLOR_MASK_ALPHA
filter_method - (must be PNG_FILTER_TYPE_BASE
for PNG 1.0, and can also be
PNG_INTRAPIXEL_DIFFERENCING if
the PNG datastream is embedded in
a MNG-1.0 datastream)
filter_type - (must be PNG_FILTER_TYPE_BASE
for PNG 1.0)
compression_type - (must be PNG_COMPRESSION_TYPE_BASE
for PNG 1.0)
interlace_type - (PNG_INTERLACE_NONE or
PNG_INTERLACE_ADAM7)
Any or all of interlace_type, compression_type, of
filter_method can be NULL if you are
not interested in their values.
filter_type can be NULL if you are not
interested in their values.
channels = png_get_channels(png_ptr, info_ptr);
channels - number of channels of info for the
@ -1228,7 +1213,7 @@ in until png_read_end() has read the chunk data following the image.
info_ptr);
color_type = png_get_color_type(png_ptr,
info_ptr);
filter_method = png_get_filter_type(png_ptr,
filter_type = png_get_filter_type(png_ptr,
info_ptr);
compression_type = png_get_compression_type(png_ptr,
info_ptr);
@ -1721,7 +1706,7 @@ histogram, it may not do as good a job.
if (png_get_valid(png_ptr, info_ptr,
PNG_INFO_PLTE))
{
png_uint_16p histogram;
png_color_16p histogram;
png_get_hIST(png_ptr, info_ptr,
&histogram);
@ -2301,11 +2286,10 @@ maximum possible compression at the expense of slower writing. If you
have no special needs in this area, let the library do what it wants by
not calling this function at all, as it has been tuned to deliver a good
speed/compression ratio. The second parameter to png_set_filter() is
the filter method, for which the only valid values are 0 (as of the
July 1999 PNG specification, version 1.2) or 64 (if you are writing
a PNG datastream that is to be embedded in a MNG datastream). The third
parameter is a flag that indicates which filter type(s) are to be tested
for each scanline. See the PNG specification for details on the specific filter
the filter method, for which the only valid value is '0' (as of the
July 1999 PNG specification, version 1.2). The third parameter is a
flag that indicates which filter type(s) are to be tested for each
scanline. See the PNG specification for details on the specific filter
types.
@ -2326,9 +2310,6 @@ it should start out with all of the filters (to ensure that the previous
row of pixels will be stored in case it's needed later), and then add
and remove them after the start of compression.
If you are writing a PNG datastream that is to be embedded in a MNG
datastream, the second parameter can be either 0 or 64.
The png_set_compression_*() functions interface to the zlib compression
library, and should mostly be ignored unless you really know what you are
doing. The only generally useful call is png_set_compression_level()
@ -2367,7 +2348,7 @@ Some of the more important parts of the png_info are:
png_set_IHDR(png_ptr, info_ptr, width, height,
bit_depth, color_type, interlace_type,
compression_type, filter_method)
compression_type, filter_type)
width - holds the width of the image
in pixels (up to 2^31).
height - holds the height of the image
@ -2399,11 +2380,7 @@ Some of the more important parts of the png_info are:
PNG_INTERLACE_ADAM7
compression_type - (must be
PNG_COMPRESSION_TYPE_DEFAULT)
filter_method - (must be PNG_FILTER_TYPE_DEFAULT
or, if you are writing a PNG to
be embedded in a MNG datastream,
can also be
PNG_INTRAPIXEL_DIFFERENCING)
filter_type - (must be PNG_FILTER_TYPE_DEFAULT)
png_set_PLTE(png_ptr, info_ptr, palette,
num_palette);
@ -3001,22 +2978,13 @@ For a more compact example of writing a PNG image, see the file example.c.
.SH V. Modifying/Customizing libpng:
There are three issues here. The first is changing how libpng does
There are two issues here. The first is changing how libpng does
standard things like memory allocation, input/output, and error handling.
The second deals with more complicated things like adding new chunks,
adding new transformations, and generally changing how libpng works.
Both of those are compile-time issues; that is, they are generally
determined at the time the code is written, and there is rarely a need
to provide the user with a means of changing them. The third is a
run-time issue: choosing between and/or tuning one or more alternate
versions of computationally intensive routines; specifically, optimized
assembly-language (and therefore compiler- and platform-dependent)
versions.
Memory allocation, input/output, and error handling
All of the memory allocation, input/output, and error handling in libpng
goes through callbacks that are user-settable. The default routines are
goes through callbacks that are user settable. The default routines are
in pngmem.c, pngrio.c, pngwio.c, and pngerror.c, respectively. To change
these functions, call the appropriate png_set_*_fn() function.
@ -3249,10 +3217,6 @@ structures appropriately for all of the filter types.
png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE,
filters);
The second parameter can also be PNG_INTRAPIXEL_DIFFERENCING
if you are writing a PNG to be embedded in a MNG
datastream. This parameter must be the same as the
value of filter_method used in png_set_IHDR().
It is also possible to influence how libpng chooses from among the
available filters. This is done in two ways - by telling it how
@ -3364,33 +3328,7 @@ When PNG_DEBUG = 1, the macros are defined, but only png_debug statements
having level = 0 will be printed. There aren't any such statements in
this version of libpng, but if you insert some they will be printed.
.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.
Libpng can support some of these extensions. To enable them, use the
png_permit_mng_features() function:
feature_set = png_permit_mng_features(png_ptr, mask)
mask is a png_uint_32 containing the logical OR of the
features you want to enable. These include
PNG_FLAG_MNG_EMPTY_PLTE
PNG_FLAG_MNG_FILTER_64
PNG_ALL_MNG_FEATURES
feature_set is a png_32_uint that is the logical AND of
your mask with the set of MNG features that is
supported by the version of libpng that you are using.
It is an error to use this function when reading or writing a standalone
PNG file with the PNG 8-byte signature. The PNG datastream must be wrapped
in a MNG datastream. As a minimum, it must have the MNG 8-byte signature
and the MHDR and MEND chunks. Libpng does not provide support for these
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 VI. 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
@ -3439,15 +3377,15 @@ application:
png_uint_32 application_vn = PNG_LIBPNG_VER;
.SH VIII. Y2K Compliance in libpng
.SH VII. Y2K Compliance in libpng
January 16, 2001
November 19, 2000
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 1.0.9beta10 are Y2K compliant. It is my belief that earlier
upward through 1.0.9beta2 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
@ -3588,7 +3526,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.0.9beta10 - January 16, 2001:
Libpng version 1.0.9beta2 - November 19, 2000:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (randeg@alum.rpi.edu).
@ -3605,7 +3543,7 @@ included in the libpng distribution, the latter shall prevail.)
If you modify libpng you may insert additional notices immediately following
this sentence.
libpng versions 1.0.7, July 1, 2000, through 1.0.9beta10, January 16, 2001, are
libpng versions 1.0.7, July 1, 2000, through 1.0.9beta2, November 19, 2000, are
Copyright (c) 2000 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
@ -3696,7 +3634,7 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
randeg@alum.rpi.edu
January 16, 2001
November 19, 2000
.\" end of man page

92
libpng.txt
View File

@ -1,6 +1,6 @@
libpng.txt - A description on how to use and modify libpng
libpng version 1.0.9beta10 - January 16, 2001
libpng version 1.0.9beta2 - November 19, 2000
Updated and distributed by Glenn Randers-Pehrson
<randeg@alum.rpi.edu>
Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
@ -67,7 +67,7 @@ majority of the needs of its users.
Libpng uses zlib for its compression and decompression of PNG files.
Further information about zlib, and the latest version of zlib, can
be found at the zlib home page, <http://www.info-zip.org/pub/infozip/zlib/>.
be found at the zlib home page, <ftp://ftp.freesoftware.com/pub/infozip/zlib/>.
The zlib compression utility is a general purpose utility that is
useful for more than PNG files, and can be used without libpng.
See the documentation delivered with zlib for more details.
@ -400,7 +400,7 @@ in until png_read_end() has read the chunk data following the image.
png_get_IHDR(png_ptr, info_ptr, &width, &height,
&bit_depth, &color_type, &interlace_type,
&compression_type, &filter_method);
&compression_type, &filter_type);
width - holds the width of the image
in pixels (up to 2^31).
@ -428,18 +428,15 @@ in until png_read_end() has read the chunk data following the image.
PNG_COLOR_MASK_COLOR
PNG_COLOR_MASK_ALPHA
filter_method - (must be PNG_FILTER_TYPE_BASE
for PNG 1.0, and can also be
PNG_INTRAPIXEL_DIFFERENCING if
the PNG datastream is embedded in
a MNG-1.0 datastream)
filter_type - (must be PNG_FILTER_TYPE_BASE
for PNG 1.0)
compression_type - (must be PNG_COMPRESSION_TYPE_BASE
for PNG 1.0)
interlace_type - (PNG_INTERLACE_NONE or
PNG_INTERLACE_ADAM7)
Any or all of interlace_type, compression_type, of
filter_method can be NULL if you are
not interested in their values.
filter_type can be NULL if you are not
interested in their values.
channels = png_get_channels(png_ptr, info_ptr);
channels - number of channels of info for the
@ -469,7 +466,7 @@ in until png_read_end() has read the chunk data following the image.
info_ptr);
color_type = png_get_color_type(png_ptr,
info_ptr);
filter_method = png_get_filter_type(png_ptr,
filter_type = png_get_filter_type(png_ptr,
info_ptr);
compression_type = png_get_compression_type(png_ptr,
info_ptr);
@ -962,7 +959,7 @@ histogram, it may not do as good a job.
if (png_get_valid(png_ptr, info_ptr,
PNG_INFO_PLTE))
{
png_uint_16p histogram;
png_color_16p histogram;
png_get_hIST(png_ptr, info_ptr,
&histogram);
@ -1542,11 +1539,10 @@ maximum possible compression at the expense of slower writing. If you
have no special needs in this area, let the library do what it wants by
not calling this function at all, as it has been tuned to deliver a good
speed/compression ratio. The second parameter to png_set_filter() is
the filter method, for which the only valid values are 0 (as of the
July 1999 PNG specification, version 1.2) or 64 (if you are writing
a PNG datastream that is to be embedded in a MNG datastream). The third
parameter is a flag that indicates which filter type(s) are to be tested
for each scanline. See the PNG specification for details on the specific filter
the filter method, for which the only valid value is '0' (as of the
July 1999 PNG specification, version 1.2). The third parameter is a
flag that indicates which filter type(s) are to be tested for each
scanline. See the PNG specification for details on the specific filter
types.
@ -1567,9 +1563,6 @@ it should start out with all of the filters (to ensure that the previous
row of pixels will be stored in case it's needed later), and then add
and remove them after the start of compression.
If you are writing a PNG datastream that is to be embedded in a MNG
datastream, the second parameter can be either 0 or 64.
The png_set_compression_*() functions interface to the zlib compression
library, and should mostly be ignored unless you really know what you are
doing. The only generally useful call is png_set_compression_level()
@ -1608,7 +1601,7 @@ Some of the more important parts of the png_info are:
png_set_IHDR(png_ptr, info_ptr, width, height,
bit_depth, color_type, interlace_type,
compression_type, filter_method)
compression_type, filter_type)
width - holds the width of the image
in pixels (up to 2^31).
height - holds the height of the image
@ -1640,11 +1633,7 @@ Some of the more important parts of the png_info are:
PNG_INTERLACE_ADAM7
compression_type - (must be
PNG_COMPRESSION_TYPE_DEFAULT)
filter_method - (must be PNG_FILTER_TYPE_DEFAULT
or, if you are writing a PNG to
be embedded in a MNG datastream,
can also be
PNG_INTRAPIXEL_DIFFERENCING)
filter_type - (must be PNG_FILTER_TYPE_DEFAULT)
png_set_PLTE(png_ptr, info_ptr, palette,
num_palette);
@ -2242,22 +2231,13 @@ For a more compact example of writing a PNG image, see the file example.c.
V. Modifying/Customizing libpng:
There are three issues here. The first is changing how libpng does
There are two issues here. The first is changing how libpng does
standard things like memory allocation, input/output, and error handling.
The second deals with more complicated things like adding new chunks,
adding new transformations, and generally changing how libpng works.
Both of those are compile-time issues; that is, they are generally
determined at the time the code is written, and there is rarely a need
to provide the user with a means of changing them. The third is a
run-time issue: choosing between and/or tuning one or more alternate
versions of computationally intensive routines; specifically, optimized
assembly-language (and therefore compiler- and platform-dependent)
versions.
Memory allocation, input/output, and error handling
All of the memory allocation, input/output, and error handling in libpng
goes through callbacks that are user-settable. The default routines are
goes through callbacks that are user settable. The default routines are
in pngmem.c, pngrio.c, pngwio.c, and pngerror.c, respectively. To change
these functions, call the appropriate png_set_*_fn() function.
@ -2490,10 +2470,6 @@ structures appropriately for all of the filter types.
png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE,
filters);
The second parameter can also be PNG_INTRAPIXEL_DIFFERENCING
if you are writing a PNG to be embedded in a MNG
datastream. This parameter must be the same as the
value of filter_method used in png_set_IHDR().
It is also possible to influence how libpng chooses from among the
available filters. This is done in two ways - by telling it how
@ -2605,33 +2581,7 @@ When PNG_DEBUG = 1, the macros are defined, but only png_debug statements
having level = 0 will be printed. There aren't any such statements in
this version of libpng, but if you insert some they will be printed.
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.
Libpng can support some of these extensions. To enable them, use the
png_permit_mng_features() function:
feature_set = png_permit_mng_features(png_ptr, mask)
mask is a png_uint_32 containing the logical OR of the
features you want to enable. These include
PNG_FLAG_MNG_EMPTY_PLTE
PNG_FLAG_MNG_FILTER_64
PNG_ALL_MNG_FEATURES
feature_set is a png_32_uint that is the logical AND of
your mask with the set of MNG features that is
supported by the version of libpng that you are using.
It is an error to use this function when reading or writing a standalone
PNG file with the PNG 8-byte signature. The PNG datastream must be wrapped
in a MNG datastream. As a minimum, it must have the MNG 8-byte signature
and the MHDR and MEND chunks. Libpng does not provide support for these
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.
VII. Changes to Libpng from version 0.88
VI. 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
@ -2680,15 +2630,15 @@ application:
png_uint_32 application_vn = PNG_LIBPNG_VER;
VIII. Y2K Compliance in libpng
VII. Y2K Compliance in libpng
January 16, 2001
November 19, 2000
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 1.0.9beta10 are Y2K compliant. It is my belief that earlier
upward through 1.0.9beta2 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

4
libpngpf.3
View File

@ -1,6 +1,6 @@
.TH LIBPNGPF 3 "January 16, 2001"
.TH LIBPNGPF 3 "November 19, 2000"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.0.9beta10
libpng \- Portable Network Graphics (PNG) Reference Library 1.0.9beta2
(private functions)
.SH SYNOPSIS
\fB#include <png.h>\fP

2
png.5
View File

@ -1,4 +1,4 @@
.TH PNG 5 "January 16, 2001"
.TH PNG 5 "November 19, 2000"
.SH NAME
png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION

26
png.c
View File

@ -1,8 +1,8 @@
/* png.c - location for general purpose libpng functions
*
* libpng version 1.0.9beta10 - January 16, 2001
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* libpng version 1.0.9beta2 - November 19, 2000
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -13,14 +13,14 @@
#include "png.h"
/* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_0_9beta10 Your_png_h_is_not_version_1_0_9beta10;
typedef version_1_0_9beta2 Your_png_h_is_not_version_1_0_9beta2;
/* Version information for C files. This had better match the version
* string defined in png.h. */
#ifdef PNG_USE_GLOBAL_ARRAYS
/* png_libpng_ver was changed to a function in version 1.0.5c */
const char png_libpng_ver[18] = "1.0.9beta10";
const char png_libpng_ver[18] = "1.0.9beta2";
/* png_sig was changed to a function in version 1.0.5c */
/* Place to hold the signature string for a PNG file. */
@ -626,8 +626,8 @@ png_charp PNGAPI
png_get_copyright(png_structp png_ptr)
{
if (png_ptr != NULL || png_ptr == NULL) /* silence compiler warning */
return ((png_charp) "\n libpng version 1.0.9beta10 - January 16, 2001\n\
Copyright (c) 1998-2001 Glenn Randers-Pehrson\n\
return ((png_charp) "\n libpng version 1.0.9beta2 - November 19, 2000\n\
Copyright (c) 1998-2000 Glenn Randers-Pehrson\n\
Copyright (c) 1996, 1997 Andreas Dilger\n\
Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.\n");
return ((png_charp) "");
@ -644,8 +644,8 @@ png_get_libpng_ver(png_structp png_ptr)
{
/* Version of *.c files used when building libpng */
if(png_ptr != NULL) /* silence compiler warning about unused png_ptr */
return((png_charp) "1.0.9beta10");
return((png_charp) "1.0.9beta10");
return((png_charp) "1.0.9beta2");
return((png_charp) "1.0.9beta2");
}
png_charp PNGAPI
@ -697,13 +697,3 @@ png_access_version_number(void)
/* Version of *.c files used when building libpng */
return((png_uint_32) 10009L);
}
/* this function was added to libpng 1.0.9 (porting aid to libpng-1.2.0) */
#ifndef PNG_ASSEMBLER_CODE_SUPPORTED
int PNGAPI
png_mmx_support(void)
{
return -1;
}
#endif

110
png.h
View File

@ -1,15 +1,15 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.0.9beta10 - January 16, 2001
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* libpng version 1.0.9beta2 - November 19, 2000
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
* Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
* libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.0.9beta10 - January 16, 2001: Glenn
* libpng versions 0.97, January 1998, through 1.0.9beta2 - November 19, 2000: Glenn
* See also "Contributing Authors", below.
*
* Note about libpng version numbers:
@ -58,14 +58,12 @@
* 1.0.8beta1-4 10008 2.1.0.8beta1-4
* 1.0.8rc1 10008 2.1.0.8rc1
* 1.0.8 10008 2.1.0.8
* 1.0.9beta1-6 10009 2.1.0.9beta1-6
* 1.0.9rc1 10009 2.1.0.9rc1
* 1.0.9beta7-10 10009 2.1.0.9beta7-10
* 1.0.9beta1-2 10009 2.1.0.9
*
* Henceforth the source version will match the shared-library major
* and minor numbers; the shared-library major version number will be
* used for changes in backward compatibility, as it is intended. The
* PNG_LIBPNG_VER macro, which is not used within libpng but is available
* 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). Beta versions
* were given the previous public release number plus a letter, until
@ -87,8 +85,8 @@
* If you modify libpng you may insert additional notices immediately following
* this sentence.
*
* libpng versions 1.0.7, July 1, 2000, through 1.0.9beta10, January 16, 2001, are
* Copyright (c) 2000, 2001 Glenn Randers-Pehrson, and are
* libpng versions 1.0.7, July 1, 2000, through 1.0.9beta2, November 19, 2000, are
* Copyright (c) 2000 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
*
@ -192,13 +190,13 @@
* Y2K compliance in libpng:
* =========================
*
* January 16, 2001
* November 19, 2000
*
* 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 1.0.9beta10 are Y2K compliant. It is my belief that earlier
* upward through 1.0.9beta2 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
@ -254,7 +252,7 @@
*/
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.0.9beta10"
#define PNG_LIBPNG_VER_STRING "1.0.9beta2"
#define PNG_LIBPNG_VER_SONUM 2
@ -264,16 +262,8 @@
#define PNG_LIBPNG_VER_RELEASE 9
/* This should match the numeric part of the final component of
* PNG_LIBPNG_VER_STRING, omitting any leading zero: */
#define PNG_LIBPNG_VER_BUILD 10
#define PNG_LIBPNG_BUILD_ALPHA 1
#define PNG_LIBPNG_BUILD_BETA 2
#define PNG_LIBPNG_BUILD_RC 3
#define PNG_LIBPNG_BUILD_STABLE 4
#define PNG_LIBPNG_BUILD_TYPEMASK 7
#define PNG_LIBPNG_BUILD_PATCH 8 /* Can be OR'ed with STABLE only */
#define PNG_LIBPNG_BUILD_TYPE 2
#define PNG_LIBPNG_VER_BUILD 2
#define PNG_LIBPNG_BUILD_TYPE beta /* alpha, beta, rc, stable, patched */
/* Careful here. At one time, Guy wanted to use 082, but that would be octal.
* We must not include leading zeros.
@ -287,9 +277,14 @@
/* include the compression library's header */
#include "zlib.h"
/* include all user configurable info, including optional assembler routines */
/* include all user configurable info */
#include "pngconf.h"
/* macros for optional assembler routines */
#if defined(PNG_INTERNAL) && defined(PNG_ASSEMBLER_CODE_SUPPORTED)
# include "pngasmrd.h"
#endif
/* Inhibit C++ name-mangling for libpng functions but not for system calls. */
#ifdef __cplusplus
extern "C" {
@ -443,7 +438,7 @@ typedef png_text FAR * FAR * png_textpp;
* Two conversions are provided, both from time_t and struct tm. There
* is no portable way to convert to either of these structures, as far
* as I know. If you know of a portable way, send it to me. As a side
* note - PNG has always been Year 2000 compliant!
* note - PNG is Year 2000 compliant!
*/
typedef struct png_time_struct
{
@ -501,20 +496,20 @@ typedef png_unknown_chunk FAR * FAR * png_unknown_chunkpp;
* The following members may have allocated storage attached that should be
* cleaned up before the structure is discarded: palette, trans, text,
* pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile,
* splt_palettes, scal_unit, row_pointers, and unknowns. By default, these
* are automatically freed when the info structure is deallocated, if they were
* splt_palettes, scal_unit, row_pointers, and unknowns. By default, these are
* automatically freed when the info structure is deallocated, if they were
* allocated internally by libpng. This behavior can be changed by means
* of the png_data_freer() function.
*
* More allocation details: all the chunk-reading functions that
* change these members go through the corresponding png_set_*
* functions. A function to clear these members is available: see
* png_free_data(). The png_set_* functions do not depend on being
* able to point info structure members to any of the storage they are
* passed (they make their own copies), EXCEPT that the png_set_text
* functions use the same storage passed to them in the text_ptr or
* itxt_ptr structure argument, and the png_set_rows and png_set_unknowns
* functions do not make their own copies.
* More allocation details: all the chunk-reading functions that change these
* members go through the corresponding png_set_* functions. A function to
* clear these members is available: see png_free_data(). Some of the
* png_set_* functions do not depend on being able to point info structure
* members to any of the storage they are passed (they make their own copies),
* EXCEPT that the png_set_text functions use the same storage passed to them
* in the text_ptr or itxt_ptr structure argument, and the png_set_tRNS,
* png_set_PLTE, png_set_hIST, png_set_iCCP, png_set_rows, png_set_sPLT,
* and png_set_unknowns do not make their own copies.
*/
typedef struct png_info_struct
{
@ -700,7 +695,6 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
/* iCCP chunk data. */
png_charp iccp_name; /* profile name */
png_charp iccp_profile; /* International Color Consortium profile data */
/* Note to maintainer: should be png_bytep */
png_uint_32 iccp_proflen; /* ICC profile data length */
png_byte iccp_compression; /* Always zero */
#endif
@ -781,7 +775,6 @@ typedef png_info FAR * FAR * png_infopp;
/* This is for filter type. PNG 1.0-1.2 only define the single type. */
#define PNG_FILTER_TYPE_BASE 0 /* Single row per-byte filtering */
#define PNG_INTRAPIXEL_DIFFERENCING 64 /* Used only in MNG datastreams */
#define PNG_FILTER_TYPE_DEFAULT PNG_FILTER_TYPE_BASE
/* These are for the interlacing type. These values should NOT be changed. */
@ -822,8 +815,6 @@ typedef png_info FAR * FAR * png_infopp;
/* This is for text chunks */
#define PNG_KEYWORD_MAX_LENGTH 79
/* Maximum number of entries in PLTE/sPLT/tRNS arrays */
#define PNG_MAX_PALETTE_LENGTH 256
/* These determine if an ancillary chunk's data has been successfully read
* from the PNG header, or if the application has filled in the corresponding
@ -918,9 +909,8 @@ typedef void (PNGAPI *png_unknown_chunk_ptr) PNGARG((png_structp));
#define PNG_TRANSFORM_STRIP_FILLER 0x0800 /* WRITE only */
/* Flags for MNG supported features */
#define PNG_FLAG_MNG_EMPTY_PLTE 0x01
#define PNG_FLAG_MNG_FILTER_64 0x04
#define PNG_ALL_MNG_FEATURES 0x05
#define PNG_FLAG_MNG_EMPTY_PLTE 0x01
#define PNG_ALL_MNG_FEATURES 0x01
typedef png_voidp (*png_malloc_ptr) PNGARG((png_structp, png_size_t));
typedef void (*png_free_ptr) PNGARG((png_structp, png_voidp));
@ -1166,15 +1156,12 @@ struct png_struct_def
png_fixed_point int_gamma;
#endif
png_byte filter_type;
};
/* This prevents a compiler error in png_get_copyright() in png.c if png.c
and png.h are both at * version 1.0.9beta10
and png.h are both at * version 1.0.9beta2
*/
typedef png_structp version_1_0_9beta10;
typedef png_structp version_1_0_9beta2;
typedef png_struct FAR * FAR * png_structpp;
@ -2026,14 +2013,12 @@ extern PNG_EXPORT(void,png_set_sRGB_gAMA_and_cHRM) PNGARG((png_structp png_ptr,
extern PNG_EXPORT(png_uint_32,png_get_iCCP) PNGARG((png_structp png_ptr,
png_infop info_ptr, png_charpp name, int *compression_type,
png_charpp profile, png_uint_32 *proflen));
/* Note to maintainer: profile should be png_bytepp */
#endif
#if defined(PNG_iCCP_SUPPORTED)
extern PNG_EXPORT(void,png_set_iCCP) PNGARG((png_structp png_ptr,
png_infop info_ptr, png_charp name, int compression_type,
png_charp profile, png_uint_32 proflen));
/* Note to maintainer: profile should be png_bytep */
#endif
#if defined(PNG_READ_sPLT_SUPPORTED)
@ -2214,13 +2199,8 @@ extern PNG_EXPORT(png_uint_32,png_permit_mng_features) PNGARG((png_structp
png_ptr, png_uint_32 mng_features_permitted));
#endif
/* png.c, pnggccrd.c, or pngvcrd.c */
extern PNG_EXPORT(int,png_mmx_support) PNGARG((void));
/* Maintainer: Put new public prototypes here ^, in libpng.3, and project defs */
#define PNG_HEADER_VERSION_STRING \
" libpng version 1.0.9beta10 - January 16, 2001 (header)\n"
" libpng version 1.0.9beta2 - November 19, 2000 (header)\n"
#ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
/* With these routines we avoid an integer divide, which will be slower on
@ -2286,7 +2266,6 @@ extern PNG_EXPORT(int,png_mmx_support) PNGARG((void));
#define PNG_WROTE_tIME 0x200
#define PNG_WROTE_INFO_BEFORE_PLTE 0x400
#define PNG_BACKGROUND_IS_GRAY 0x800
#define PNG_HAVE_PNG_SIGNATURE 0x1000
/* flags for the transformations the PNG library does on the image data */
#define PNG_BGR 0x0001
@ -2448,7 +2427,7 @@ PNG_EXTERN png_uint_16 png_get_uint_16 PNGARG((png_bytep buf));
#endif /* !PNG_READ_BIG_ENDIAN_SUPPORTED */
/* Initialize png_ptr struct for reading, and allocate any other memory.
* (old interface - DEPRECATED - use png_create_read_struct instead).
* (old interface - DEPRECATED).
*/
extern PNG_EXPORT(void,png_read_init) PNGARG((png_structp png_ptr));
#define png_read_init(png_ptr) png_read_init_2(png_ptr, \
@ -2458,7 +2437,7 @@ extern PNG_EXPORT(void,png_read_init_2) PNGARG((png_structp png_ptr,
png_info_size));
/* Initialize png_ptr struct for writing, and allocate any other memory.
* (old interface - DEPRECATED - use png_create_write_struct instead).
* (old interface - DEPRECATED).
*/
extern PNG_EXPORT(void,png_write_init) PNGARG((png_structp png_ptr));
#define png_write_init(png_ptr) png_write_init_2(png_ptr, \
@ -2605,7 +2584,6 @@ PNG_EXTERN void png_write_sRGB PNGARG((png_structp png_ptr,
PNG_EXTERN void png_write_iCCP PNGARG((png_structp png_ptr,
png_charp name, int compression_type,
png_charp profile, int proflen));
/* Note to maintainer: profile should be png_bytep */
#endif
#if defined(PNG_WRITE_sPLT_SUPPORTED)
@ -2700,15 +2678,10 @@ PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row,
#if defined(PNG_READ_INTERLACING_SUPPORTED)
/* expand an interlaced row */
/* OLD interface:
PNG_EXTERN void png_do_read_interlace PNGARG((png_row_infop row_info,
png_bytep row, int pass, png_uint_32 transformations));
*/
PNG_EXTERN void png_do_read_interlace PNGARG((png_structp png_ptr));
#endif
/* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */
#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
/* grab pixels out of a row for an interlaced pass */
PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info,
@ -3013,15 +2986,6 @@ PNG_EXTERN void png_push_read_iTXt PNGARG((png_structp png_ptr,
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
#ifdef PNG_MNG_FEATURES_SUPPORTED
PNG_EXTERN void png_do_read_intrapixel PNGARG((png_row_infop row_info,
png_bytep row));
PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info,
png_bytep row));
#endif
/* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
#endif /* PNG_INTERNAL */
#ifdef __cplusplus

36
pngasmrd.h
View File

@ -1,11 +1,39 @@
/* pngasmrd.h - assembler version of utilities to read a PNG file
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 2001 Glenn Randers-Pehrson
* Copyright (c) 1999, 2000 Glenn Randers-Pehrson
*
*/
/* This file is obsolete in libpng-1.0.9 and later; its contents now appear
* at the end of pngconf.h.
#ifndef PNGASMRD_H
#define PNGASMRD_H
#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
/* Set this in the makefile for VC++ on Pentium, not in pngconf.h */
/* Platform must be Pentium. Makefile must assemble and load pngvcrd.c .
* MMX will be detected at run time and used if present.
*/
#ifdef PNG_USE_PNGVCRD
# define PNG_HAVE_ASSEMBLER_COMBINE_ROW
# define PNG_HAVE_ASSEMBLER_READ_INTERLACE
# define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
#endif
/* Set this in the makefile for gcc/as on Pentium, not in pngconf.h */
/* Platform must be Pentium. Makefile must assemble and load pnggccrd.c .
* MMX will be detected at run time and used if present.
*/
#ifdef PNG_USE_PNGGCCRD
# define PNG_HAVE_ASSEMBLER_COMBINE_ROW
# define PNG_HAVE_ASSEMBLER_READ_INTERLACE
# define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
#endif
/*
GRR notes:
- see pnggccrd.c for info about what is currently enabled
*/
#endif
#endif /* PNGASMRD_H */

535
pngconf.h
View File

@ -1,8 +1,8 @@
/* pngconf.h - machine configurable file for libpng
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*/
@ -30,11 +30,11 @@
*/
#ifndef PNG_ZBUF_SIZE
# define PNG_ZBUF_SIZE 8192
#define PNG_ZBUF_SIZE 8192
#endif
#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
# define PNG_FLOATING_POINT_SUPPORTED
#define PNG_FLOATING_POINT_SUPPORTED
#endif
/* If you are running on a machine where you cannot allocate more
@ -46,7 +46,7 @@
#define PNG_MAX_MALLOC_64K
*/
#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
# define PNG_MAX_MALLOC_64K
#define PNG_MAX_MALLOC_64K
#endif
/* Special munging to support doing things the 'cygwin' way:
@ -117,12 +117,12 @@
*/
#if defined(_WIN32_WCE)
# include <windows.h>
/* Console I/O functions are not supported on WindowsCE */
# define PNG_NO_CONSOLE_IO
# ifdef PNG_DEBUG
# undef PNG_DEBUG
# endif
#include <windows.h>
/* Console I/O functions are not supported on WindowsCE */
#define PNG_NO_CONSOLE_IO
#ifdef PNG_DEBUG
# undef PNG_DEBUG
#endif
#endif
#ifdef PNG_BUILD_DLL
@ -159,13 +159,13 @@
#ifndef PNGARG
#ifdef OF /* zlib prototype munger */
# define PNGARG(arglist) OF(arglist)
#define PNGARG(arglist) OF(arglist)
#else
#ifdef _NO_PROTO
# define PNGARG(arglist) ()
#define PNGARG(arglist) ()
#else
# define PNGARG(arglist) arglist
#define PNGARG(arglist) arglist
#endif /* _NO_PROTO */
#endif /* OF */
@ -177,15 +177,15 @@
* on non-Mac platforms.
*/
#ifndef MACOS
# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
# define MACOS
# endif
#if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
#define MACOS
#endif
#endif
/* enough people need this for various reasons to include it here */
#if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
# include <sys/types.h>
#include <sys/types.h>
#endif
#ifndef PNG_SETJMP_NOT_SUPPORTED
@ -206,10 +206,10 @@
__png.h__ already includes setjmp.h;
__dont__ include it again.;
# endif
# endif /* __linux__ */
#endif /* __linux__ */
/* include setjmp.h for error handling */
# include <setjmp.h>
/* include setjmp.h for error handling */
#include <setjmp.h>
# ifdef __linux__
# ifdef PNG_SAVE_BSD_SOURCE
@ -222,18 +222,17 @@
#if defined(_AIX) && defined(__xlC__)
/* This prevents "AIX/xlC" from generating an "index(s,c)" macro in strings.h
* that conflicts with libpng's png_color_16.index */
# undef __STR__
#undef __STR__
#endif
#ifdef BSD
# include <strings.h>
#include <strings.h>
#else
# include <string.h>
#include <string.h>
#endif
/* Other defines for things like memory and the like can go here. */
#ifdef PNG_INTERNAL
#include <stdlib.h>
/* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
@ -250,28 +249,28 @@
*/
#if defined(PNG_FLOATING_POINT_SUPPORTED)
# if defined(MACOS)
/* We need to check that <math.h> hasn't already been included earlier
* as it seems it doesn't agree with <fp.h>, yet we should really use
* <fp.h> if possible.
*/
# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
# include <fp.h>
# endif
# else
# include <math.h>
# endif
# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
/* Amiga SAS/C: We must include builtin FPU functions when compiling using
* MATH=68881
*/
# include <m68881.h>
# endif
#if defined(MACOS)
/* We need to check that <math.h> hasn't already been included earlier
* as it seems it doesn't agree with <fp.h>, yet we should really use
* <fp.h> if possible.
*/
#if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
#include <fp.h>
#endif
#else
#include <math.h>
#endif
#if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
/* Amiga SAS/C: We must include builtin FPU functions when compiling using
* MATH=68881
*/
#include <m68881.h>
#endif
#endif
/* Codewarrior on NT has linking problems without this. */
#if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
# define PNG_ALWAYS_EXTERN
#define PNG_ALWAYS_EXTERN
#endif
/* For some reason, Borland C++ defines memcmp, etc. in mem.h, not
@ -279,12 +278,12 @@
* "feature"?
*/
#ifdef __TURBOC__
# include <mem.h>
# include "alloc.h"
#include <mem.h>
#include "alloc.h"
#endif
#ifdef _MSC_VER
# include <malloc.h>
#include <malloc.h>
#endif
/* This controls how fine the dithering gets. As this allocates
@ -292,13 +291,13 @@
* with dithering quality can decrease some or all of these.
*/
#ifndef PNG_DITHER_RED_BITS
# define PNG_DITHER_RED_BITS 5
#define PNG_DITHER_RED_BITS 5
#endif
#ifndef PNG_DITHER_GREEN_BITS
# define PNG_DITHER_GREEN_BITS 5
#define PNG_DITHER_GREEN_BITS 5
#endif
#ifndef PNG_DITHER_BLUE_BITS
# define PNG_DITHER_BLUE_BITS 5
#define PNG_DITHER_BLUE_BITS 5
#endif
/* This controls how fine the gamma correction becomes when you
@ -309,14 +308,14 @@
*/
#ifndef PNG_MAX_GAMMA_8
# define PNG_MAX_GAMMA_8 11
#define PNG_MAX_GAMMA_8 11
#endif
/* This controls how much a difference in gamma we can tolerate before
* we actually start doing gamma conversion.
*/
#ifndef PNG_GAMMA_THRESHOLD
# define PNG_GAMMA_THRESHOLD 0.05
#define PNG_GAMMA_THRESHOLD 0.05
#endif
#endif /* PNG_INTERNAL */
@ -381,167 +380,163 @@
*/
#ifdef PNG_LEGACY_SUPPORTED
# define PNG_NO_FREE_ME
# define PNG_NO_READ_UNKNOWN_CHUNKS
# define PNG_NO_WRITE_UNKNOWN_CHUNKS
# define PNG_NO_READ_USER_CHUNKS
# define PNG_NO_READ_iCCP
# define PNG_NO_WRITE_iCCP
# define PNG_NO_READ_iTXt
# define PNG_NO_WRITE_iTXt
# define PNG_NO_READ_sCAL
# define PNG_NO_WRITE_sCAL
# define PNG_NO_READ_sPLT
# define PNG_NO_WRITE_sPLT
# define PNG_NO_INFO_IMAGE
# define PNG_NO_READ_RGB_TO_GRAY
# define PNG_NO_READ_USER_TRANSFORM
# define PNG_NO_WRITE_USER_TRANSFORM
# define PNG_NO_USER_MEM
# define PNG_NO_READ_EMPTY_PLTE
# define PNG_NO_MNG_FEATURES
# define PNG_NO_FIXED_POINT_SUPPORTED
#define PNG_NO_FREE_ME
#define PNG_NO_READ_UNKNOWN_CHUNKS
#define PNG_NO_WRITE_UNKNOWN_CHUNKS
#define PNG_NO_READ_USER_CHUNKS
#define PNG_NO_READ_iCCP
#define PNG_NO_WRITE_iCCP
#define PNG_NO_READ_iTXt
#define PNG_NO_WRITE_iTXt
#define PNG_NO_READ_sCAL
#define PNG_NO_WRITE_sCAL
#define PNG_NO_READ_sPLT
#define PNG_NO_WRITE_sPLT
#define PNG_NO_INFO_IMAGE
#define PNG_NO_READ_RGB_TO_GRAY
#define PNG_NO_READ_USER_TRANSFORM
#define PNG_NO_WRITE_USER_TRANSFORM
#define PNG_NO_USER_MEM
#define PNG_NO_READ_EMPTY_PLTE
#define PNG_NO_MNG_FEATURES
#define PNG_NO_FIXED_POINT_SUPPORTED
#endif
/* Ignore attempt to turn off both floating and fixed point support */
#if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
!defined(PNG_NO_FIXED_POINT_SUPPORTED)
# define PNG_FIXED_POINT_SUPPORTED
!defined(PNG_NO_FIXED_POINT_SUPPORTED)
#define PNG_FIXED_POINT_SUPPORTED
#endif
#ifndef PNG_NO_FREE_ME
# define PNG_FREE_ME_SUPPORTED
#define PNG_FREE_ME_SUPPORTED
#endif
#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
!defined(PNG_NO_READ_TRANSFORMS)
# define PNG_READ_TRANSFORMS_SUPPORTED
#define PNG_READ_TRANSFORMS_SUPPORTED
#endif
#if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
!defined(PNG_NO_WRITE_TRANSFORMS)
# define PNG_WRITE_TRANSFORMS_SUPPORTED
#define PNG_WRITE_TRANSFORMS_SUPPORTED
#endif
#ifdef PNG_READ_TRANSFORMS_SUPPORTED
# ifndef PNG_NO_READ_EXPAND
# define PNG_READ_EXPAND_SUPPORTED
# endif
# ifndef PNG_NO_READ_SHIFT
# define PNG_READ_SHIFT_SUPPORTED
# endif
# ifndef PNG_NO_READ_PACK
# define PNG_READ_PACK_SUPPORTED
# endif
# ifndef PNG_NO_READ_BGR
# define PNG_READ_BGR_SUPPORTED
# endif
# ifndef PNG_NO_READ_SWAP
# define PNG_READ_SWAP_SUPPORTED
# endif
# ifndef PNG_NO_READ_PACKSWAP
# define PNG_READ_PACKSWAP_SUPPORTED
# endif
# ifndef PNG_NO_READ_INVERT
# define PNG_READ_INVERT_SUPPORTED
# endif
# ifndef PNG_NO_READ_DITHER
# define PNG_READ_DITHER_SUPPORTED
# endif
# ifndef PNG_NO_READ_BACKGROUND
# define PNG_READ_BACKGROUND_SUPPORTED
# endif
# ifndef PNG_NO_READ_16_TO_8
# define PNG_READ_16_TO_8_SUPPORTED
# endif
# ifndef PNG_NO_READ_FILLER
# define PNG_READ_FILLER_SUPPORTED
# endif
# ifndef PNG_NO_READ_GAMMA
# define PNG_READ_GAMMA_SUPPORTED
# endif
# ifndef PNG_NO_READ_GRAY_TO_RGB
# define PNG_READ_GRAY_TO_RGB_SUPPORTED
# endif
# ifndef PNG_NO_READ_SWAP_ALPHA
# define PNG_READ_SWAP_ALPHA_SUPPORTED
# endif
# ifndef PNG_NO_READ_INVERT_ALPHA
# define PNG_READ_INVERT_ALPHA_SUPPORTED
# endif
# ifndef PNG_NO_READ_STRIP_ALPHA
# define PNG_READ_STRIP_ALPHA_SUPPORTED
# endif
# ifndef PNG_NO_READ_USER_TRANSFORM
# define PNG_READ_USER_TRANSFORM_SUPPORTED
# endif
# ifndef PNG_NO_READ_RGB_TO_GRAY
# define PNG_READ_RGB_TO_GRAY_SUPPORTED
# endif
#ifndef PNG_NO_READ_EXPAND
#define PNG_READ_EXPAND_SUPPORTED
#endif
#ifndef PNG_NO_READ_SHIFT
#define PNG_READ_SHIFT_SUPPORTED
#endif
#ifndef PNG_NO_READ_PACK
#define PNG_READ_PACK_SUPPORTED
#endif
#ifndef PNG_NO_READ_BGR
#define PNG_READ_BGR_SUPPORTED
#endif
#ifndef PNG_NO_READ_SWAP
#define PNG_READ_SWAP_SUPPORTED
#endif
#ifndef PNG_NO_READ_PACKSWAP
#define PNG_READ_PACKSWAP_SUPPORTED
#endif
#ifndef PNG_NO_READ_INVERT
#define PNG_READ_INVERT_SUPPORTED
#endif
#ifndef PNG_NO_READ_DITHER
#define PNG_READ_DITHER_SUPPORTED
#endif
#ifndef PNG_NO_READ_BACKGROUND
#define PNG_READ_BACKGROUND_SUPPORTED
#endif
#ifndef PNG_NO_READ_16_TO_8
#define PNG_READ_16_TO_8_SUPPORTED
#endif
#ifndef PNG_NO_READ_FILLER
#define PNG_READ_FILLER_SUPPORTED
#endif
#ifndef PNG_NO_READ_GAMMA
#define PNG_READ_GAMMA_SUPPORTED
#endif
#ifndef PNG_NO_READ_GRAY_TO_RGB
#define PNG_READ_GRAY_TO_RGB_SUPPORTED
#endif
#ifndef PNG_NO_READ_SWAP_ALPHA
#define PNG_READ_SWAP_ALPHA_SUPPORTED
#endif
#ifndef PNG_NO_READ_INVERT_ALPHA
#define PNG_READ_INVERT_ALPHA_SUPPORTED
#endif
#ifndef PNG_NO_READ_STRIP_ALPHA
#define PNG_READ_STRIP_ALPHA_SUPPORTED
#endif
#ifndef PNG_NO_READ_USER_TRANSFORM
#define PNG_READ_USER_TRANSFORM_SUPPORTED
#endif
#ifndef PNG_NO_READ_RGB_TO_GRAY
#define PNG_READ_RGB_TO_GRAY_SUPPORTED
#endif
#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
#if !defined(PNG_NO_PROGRESSIVE_READ) && \
!defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
# define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
!defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
#define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
#endif /* about interlacing capability! You'll */
/* still have interlacing unless you change the following line: */
#define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
#ifndef PNG_NO_READ_COMPOSITE_NODIV
# ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
# define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
# endif
#ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
#define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel and SGI */
#endif
#endif
/* Disable if you don't need to support PNGs that are embedded in MNG
datastreams */
#ifndef PNG_NO_MNG_FEATURES
# define PNG_MNG_FEATURES_SUPPORTED
#define PNG_MNG_FEATURES_SUPPORTED /* Useful for MNG applications */
#endif
/* Deprecated, will be removed from version 2.0.0 */
/* Deprecated, will be removed */
#ifndef PNG_NO_READ_EMPTY_PLTE
# define PNG_READ_EMPTY_PLTE_SUPPORTED
#define PNG_READ_EMPTY_PLTE_SUPPORTED
#endif
#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
# ifndef PNG_NO_WRITE_SHIFT
# define PNG_WRITE_SHIFT_SUPPORTED
# endif
# ifndef PNG_NO_WRITE_PACK
# define PNG_WRITE_PACK_SUPPORTED
# endif
# ifndef PNG_NO_WRITE_BGR
# define PNG_WRITE_BGR_SUPPORTED
# endif
# ifndef PNG_NO_WRITE_SWAP
# define PNG_WRITE_SWAP_SUPPORTED
# endif
# ifndef PNG_NO_WRITE_PACKSWAP
# define PNG_WRITE_PACKSWAP_SUPPORTED
# endif
# ifndef PNG_NO_WRITE_INVERT
# define PNG_WRITE_INVERT_SUPPORTED
# endif
# ifndef PNG_NO_WRITE_FILLER
# define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
# endif
# ifndef PNG_NO_WRITE_SWAP_ALPHA
# define PNG_WRITE_SWAP_ALPHA_SUPPORTED
# endif
# ifndef PNG_NO_WRITE_INVERT_ALPHA
# define PNG_WRITE_INVERT_ALPHA_SUPPORTED
# endif
# ifndef PNG_NO_WRITE_USER_TRANSFORM
# define PNG_WRITE_USER_TRANSFORM_SUPPORTED
# endif
#ifndef PNG_NO_WRITE_SHIFT
#define PNG_WRITE_SHIFT_SUPPORTED
#endif
#ifndef PNG_NO_WRITE_PACK
#define PNG_WRITE_PACK_SUPPORTED
#endif
#ifndef PNG_NO_WRITE_BGR
#define PNG_WRITE_BGR_SUPPORTED
#endif
#ifndef PNG_NO_WRITE_SWAP
#define PNG_WRITE_SWAP_SUPPORTED
#endif
#ifndef PNG_NO_WRITE_PACKSWAP
#define PNG_WRITE_PACKSWAP_SUPPORTED
#endif
#ifndef PNG_NO_WRITE_INVERT
#define PNG_WRITE_INVERT_SUPPORTED
#endif
#ifndef PNG_NO_WRITE_FILLER
#define PNG_WRITE_FILLER_SUPPORTED /* This is the same as WRITE_STRIP_ALPHA */
#endif
#ifndef PNG_NO_WRITE_SWAP_ALPHA
#define PNG_WRITE_SWAP_ALPHA_SUPPORTED
#endif
#ifndef PNG_NO_WRITE_INVERT_ALPHA
#define PNG_WRITE_INVERT_ALPHA_SUPPORTED
#endif
#ifndef PNG_NO_WRITE_USER_TRANSFORM
#define PNG_WRITE_USER_TRANSFORM_SUPPORTED
#endif
#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
# ifndef PNG_NO_USER_TRANSFORM_PTR
# define PNG_USER_TRANSFORM_PTR_SUPPORTED
# endif
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
#ifndef PNG_NO_USER_TRANSFORM_PTR
#define PNG_USER_TRANSFORM_PTR_SUPPORTED
#endif
#endif
#define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
@ -550,20 +545,20 @@
#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
defined(PNG_FLOATING_POINT_SUPPORTED)
# define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
#define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
#endif
#ifndef PNG_NO_WRITE_FLUSH
# define PNG_WRITE_FLUSH_SUPPORTED
#define PNG_WRITE_FLUSH_SUPPORTED
#endif
/* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
#ifndef PNG_NO_WRITE_EMPTY_PLTE
# define PNG_WRITE_EMPTY_PLTE_SUPPORTED
#define PNG_WRITE_EMPTY_PLTE_SUPPORTED
#endif
#ifndef PNG_NO_STDIO
# define PNG_TIME_RFC1123_SUPPORTED
#define PNG_TIME_RFC1123_SUPPORTED
#endif
/* This adds extra functions in pngget.c for accessing data from the
@ -583,16 +578,12 @@
* png_get_y_offset_microns()
*/
#ifndef PNG_NO_EASY_ACCESS
# define PNG_EASY_ACCESS_SUPPORTED
#define PNG_EASY_ACCESS_SUPPORTED
#endif
/* PNG_ASSEMBLER_CODE will be enabled by default in version 1.2.0
even when PNG_USE_PNGVCRD or PNG_USE_PNGGCCRD is not defined */
#ifndef PNG_NO_ASSEMBLER_CODE
# if defined(PNG_USE_PNGVCRD) || defined(PNG_USE_PNGGCCRD)
# define PNG_ASSEMBLER_CODE_SUPPORTED
# define PNG_MMX_CODE_SUPPORTED
# endif
#if defined(PNG_USE_PNGVCRD) || defined(PNG_USE_PNGGCCRD) && \
!defined(PNG_NO_ASSEMBLER_CODE)
#define PNG_ASSEMBLER_CODE_SUPPORTED
#endif
/* These are currently experimental features, define them if you want */
@ -601,10 +592,10 @@
/*
#define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
#ifndef PNG_NO_USER_MEM
# define PNG_USER_MEM_SUPPORTED
#define PNG_USER_MEM_SUPPORTED
#endif
#ifndef PNG_NO_ZALLOC_ZERO
# define PNG_ZALLOC_ZERO
#define PNG_ZALLOC_ZERO
#endif
*/
@ -633,11 +624,11 @@
#if !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
!defined(PNG_NO_READ_ANCILLARY_CHUNKS)
# define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
#define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
#endif
#if !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
!defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
# define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
#define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
#endif
#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
@ -739,15 +730,13 @@
# define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
#endif /* optional PLTE chunk in RGB and RGBA images */
#if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
defined(PNG_READ_zTXt_SUPPORTED)
defined(PNG_READ_zTXt_SUPPORTED)
# define PNG_READ_TEXT_SUPPORTED
# define PNG_TEXT_SUPPORTED
#endif
#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
#ifdef PNG_NO_WRITE_TEXT
# define PNG_NO_WRITE_iTXt
# define PNG_NO_WRITE_tEXt
@ -867,13 +856,12 @@
# endif
#endif
#if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
defined(PNG_WRITE_zTXt_SUPPORTED)
defined(PNG_WRITE_zTXt_SUPPORTED)
# define PNG_WRITE_TEXT_SUPPORTED
# ifndef PNG_TEXT_SUPPORTED
# define PNG_TEXT_SUPPORTED
# endif
#endif
#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
/* Turn this off to disable png_read_png() and
@ -923,26 +911,28 @@ typedef size_t png_size_t;
/* Separate compiler dependencies (problem here is that zlib.h always
defines FAR. (SJT) */
#ifdef __BORLANDC__
# if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
# define LDATA 1
# else
# define LDATA 0
# endif
/* GRR: why is Cygwin in here? Cygwin is not Borland C... */
# if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
# define PNG_MAX_MALLOC_64K
# if (LDATA != 1)
# ifndef FAR
# define FAR __far
# endif
# define USE_FAR_KEYWORD
# endif /* LDATA != 1 */
/* Possibly useful for moving data out of default segment.
* Uncomment it if you want. Could also define FARDATA as
* const if your compiler supports it. (SJT)
# define FARDATA FAR
*/
# endif /* __WIN32__, __FLAT__, __CYGWIN__ */
#if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
#define LDATA 1
#else
#define LDATA 0
#endif
#if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
#define PNG_MAX_MALLOC_64K
#if (LDATA != 1)
#ifndef FAR
#define FAR __far
#endif
#define USE_FAR_KEYWORD
#endif /* LDATA != 1 */
/* Possibly useful for moving data out of default segment.
* Uncomment it if you want. Could also define FARDATA as
* const if your compiler supports it. (SJT)
# define FARDATA FAR
*/
#endif /* __WIN32__, __FLAT__, __CYGWIN__ */
#endif /* __BORLANDC__ */
@ -954,20 +944,20 @@ typedef size_t png_size_t;
/* MSC Medium model */
#if defined(FAR)
# if defined(M_I86MM)
# define USE_FAR_KEYWORD
# define FARDATA FAR
# include <dos.h>
# define USE_FAR_KEYWORD
# define FARDATA FAR
# include <dos.h>
# endif
#endif
/* SJT: default case */
#ifndef FAR
# define FAR
# define FAR
#endif
/* At this point FAR is always defined */
#ifndef FARDATA
# define FARDATA
#define FARDATA
#endif
/* Typedef for floating-point numbers that are converted
@ -984,15 +974,11 @@ typedef png_int_16 FAR * png_int_16p;
typedef PNG_CONST char FAR * png_const_charp;
typedef char FAR * png_charp;
typedef png_fixed_point FAR * png_fixed_point_p;
#ifndef PNG_NO_STDIO
#if defined(_WIN32_WCE)
typedef HANDLE png_FILE_p;
#else
typedef FILE * png_FILE_p;
#endif
#endif
#ifdef PNG_FLOATING_POINT_SUPPORTED
typedef double FAR * png_doublep;
#endif
@ -1010,7 +996,7 @@ typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
typedef double FAR * FAR * png_doublepp;
#endif
/* Pointers to pointers to pointers; i.e., pointer to array */
/* Pointers to pointers to pointers; i.e. pointer to array */
typedef char FAR * FAR * FAR * png_charppp;
/* libpng typedefs for types in zlib. If zlib changes
@ -1078,9 +1064,9 @@ typedef z_stream FAR * png_zstreamp;
# endif
#endif
#ifndef PNGAPI
#if defined(__MINGW32__) || defined(__CYGWIN__) && !defined(PNG_MODULEDEF)
# ifndef PNG_NO_MODULEDEF
# define PNG_NO_MODULEDEF
@ -1096,7 +1082,7 @@ typedef z_stream FAR * png_zstreamp;
defined(WIN32) || defined(_WIN32) || defined(__WIN32__) \
) && !defined(__CYGWIN__))
# if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
# ifdef __GNUC__
# define PNGAPI __cdecl
# else
# define PNGAPI _cdecl
@ -1164,9 +1150,9 @@ typedef z_stream FAR * png_zstreamp;
#endif
#ifdef PNG_USE_GLOBAL_ARRAYS
# ifndef PNG_EXPORT_VAR
# define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
# endif
#ifndef PNG_EXPORT_VAR
# define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
#endif
#endif
/* User may want to use these so they are not in PNG_INTERNAL. Any library
@ -1174,35 +1160,35 @@ typedef z_stream FAR * png_zstreamp;
*/
#ifndef PNG_ABORT
# define PNG_ABORT() abort()
# define PNG_ABORT() abort()
#endif
#ifdef PNG_SETJMP_SUPPORTED
# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
#else
# define png_jmpbuf(png_ptr) \
(LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
# define png_jmpbuf(png_ptr) \
(LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
#endif
#if defined(USE_FAR_KEYWORD) /* memory model independent fns */
/* use this to make far-to-near assignments */
# define CHECK 1
# define NOCHECK 0
# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
# define png_strcpy _fstrcpy
# define png_strlen _fstrlen
# define png_memcmp _fmemcmp /* SJT: added */
# define png_memcpy _fmemcpy
# define png_memset _fmemset
# define CHECK 1
# define NOCHECK 0
# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
# define png_strcpy _fstrcpy
# define png_strlen _fstrlen
# define png_memcmp _fmemcmp /* SJT: added */
# define png_memcpy _fmemcpy
# define png_memset _fmemset
#else /* use the usual functions */
# define CVT_PTR(ptr) (ptr)
# define CVT_PTR_NOCHECK(ptr) (ptr)
# define png_strcpy strcpy
# define png_strlen strlen
# define png_memcmp memcmp /* SJT: added */
# define png_memcpy memcpy
# define png_memset memset
# define CVT_PTR(ptr) (ptr)
# define CVT_PTR_NOCHECK(ptr) (ptr)
# define png_strcpy strcpy
# define png_strlen strlen
# define png_memcmp memcmp /* SJT: added */
# define png_memcpy memcpy
# define png_memset memset
#endif
/* End of memory model independent support */
@ -1210,48 +1196,9 @@ typedef z_stream FAR * png_zstreamp;
* contradictory.
*/
#if (PNG_ZBUF_SIZE > 65536) && defined(PNG_MAX_MALLOC_64K)
# undef PNG_ZBUF_SIZE
# define PNG_ZBUF_SIZE 65536
#undef PNG_ZBUF_SIZE
#define PNG_ZBUF_SIZE 65536
#endif
/* Prior to libpng-1.0.9, this block was in pngasmrd.h */
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED) && defined(PNG_INTERNAL)
/* These are the default thresholds before the MMX code kicks in; if either
* rowbytes or bitdepth is below the threshold, plain C code is used. These
* can be overridden at runtime via the png_set_mmx_thresholds() call in
* libpng 1.2.0 and later. The values below were chosen by Intel.
*/
#ifndef PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT
# define PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT 128 /* >= */
#endif
#ifndef PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT
# define PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT 9 /* >= */
#endif
/* Set this in the makefile for VC++ on Pentium, not here. */
/* Platform must be Pentium. Makefile must assemble and load pngvcrd.c .
* MMX will be detected at run time and used if present.
*/
#ifdef PNG_USE_PNGVCRD
# define PNG_HAVE_ASSEMBLER_COMBINE_ROW
# define PNG_HAVE_ASSEMBLER_READ_INTERLACE
# define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
#endif
/* Set this in the makefile for gcc/as on Pentium, not here. */
/* Platform must be Pentium. Makefile must assemble and load pnggccrd.c .
* MMX will be detected at run time and used if present.
*/
#ifdef PNG_USE_PNGGCCRD
# define PNG_HAVE_ASSEMBLER_COMBINE_ROW
# define PNG_HAVE_ASSEMBLER_READ_INTERLACE
# define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
#endif
/* - see pnggccrd.c for info about what is currently enabled */
#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
#endif /* PNGCONF_H */

6
pngerror.c
View File

@ -1,9 +1,9 @@
/* pngerror.c - stub functions for i/o and memory allocation
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -99,7 +99,7 @@ png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp message
void PNGAPI
png_chunk_error(png_structp png_ptr, png_const_charp message)
{
char msg[18+64];
char msg[16+64];
png_format_buffer(png_ptr, msg, message);
png_error(png_ptr, msg);
}

225
pnggccrd.c
View File

@ -6,14 +6,14 @@
* and http://www.intel.com/drg/pentiumII/appnotes/923/923.htm
* for Intel's performance analysis of the MMX vs. non-MMX code.
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* Copyright (c) 1998, Intel Corporation
*
* Based on MSVC code contributed by Nirav Chhatrapati, Intel Corp., 1998.
* Interface to libpng contributed by Gilles Vollant, 1999.
* GNU C port by Greg Roelofs, 1999-2001.
* GNU C port by Greg Roelofs, 1999-2000.
*
* Lines 2350-4300 converted in place with intel2gas 1.3.1:
*
@ -203,15 +203,6 @@
* - "_ShiftRem.use = 40;" should have been "_ShiftRem.use = 48;"
* - "psllq _ShiftRem, %%mm2" should have been "psrlq _ShiftRem, %%mm2"
*
* 20010103:
* - renamed mmxsupport() to png_mmx_support(), with auto-set of mmx_supported,
* and made it public
*
* 20010104:
* - removed dependency on png_read_filter_row_c() (C code already duplicated
* within MMX version of png_read_filter_row()) so no longer necessary to
* compile it into pngrutil.o
*
* STILL TO DO:
* - test png_do_read_interlace() 64-bit case (pixel_bytes == 8)
* - write MMX code for 48-bit case (pixel_bytes == 6)
@ -220,7 +211,7 @@
* (only width_mmx case) (near line 1606)
* - rewrite all MMX interlacing code so it's aligned with beginning
* of the row buffer, not the end (see 19991007 for details)
* x pick one version of mmxsupport() and get rid of the other
* - pick one version of mmxsupport() and get rid of the other
* - add error messages to any remaining bogus default cases
* - enable pixel_depth == 8 cases in png_read_filter_row()? (test speed)
* - add support for runtime enable/disable/query of various MMX routines
@ -233,6 +224,10 @@
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED) && defined(PNG_USE_PNGGCCRD)
int mmxsupport(void);
static int mmx_supported = 2;
#ifdef PNG_USE_LOCAL_ARRAYS
static const int FARDATA png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
static const int FARDATA png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
@ -242,7 +237,6 @@ static const int FARDATA png_pass_width[7] = {8, 4, 4, 2, 2, 1, 1};
// djgpp, Win32, and Cygwin add their own underscores to global variables,
// so define them without:
#if defined(__DJGPP__) || defined(WIN32) || defined(__CYGWIN__)
# define _mmx_supported mmx_supported
# define _unmask unmask
# define _const4 const4
# define _const6 const6
@ -277,8 +271,6 @@ static const int FARDATA png_pass_width[7] = {8, 4, 4, 2, 2, 1, 1};
# define _pctemp pctemp
#endif
static int _mmx_supported = 2;
/* These constants are used in the inlined MMX assembly code.
Ignore gcc's "At top level: defined but not used" warnings. */
@ -326,6 +318,11 @@ static int _pbtemp;
static int _pctemp;
void /* PRIVATE */
png_read_filter_row_c(png_structp png_ptr, png_row_infop row_info,
png_bytep row, png_bytep prev_row, int filter);
//===========================================================================//
@ -355,16 +352,16 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
{
png_debug(1,"in png_combine_row_asm\n");
if (_mmx_supported == 2) {
png_mmx_support();
}
if (mmx_supported == 2)
mmx_supported = mmxsupport();
if (mask == 0xff)
{
png_memcpy(row, png_ptr->row_buf + 1,
(png_size_t)((png_ptr->width * png_ptr->row_info.pixel_depth + 7) >> 3));
}
/* GRR: png_combine_row() never called with mask == 0 */
/* GRR: add "else if (mask == 0)" case?
* or does png_combine_row() not even get called in that case? */
else
{
switch (png_ptr->row_info.pixel_depth)
@ -540,7 +537,7 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
png_bytep srcptr;
png_bytep dstptr;
if ( _mmx_supported )
if (mmx_supported)
{
png_uint_32 len;
int diff;
@ -656,7 +653,7 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
png_bytep srcptr;
png_bytep dstptr;
if ( _mmx_supported )
if (mmx_supported)
{
png_uint_32 len;
int diff;
@ -788,7 +785,7 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
png_bytep srcptr;
png_bytep dstptr;
if ( _mmx_supported )
if (mmx_supported)
{
png_uint_32 len;
int diff;
@ -935,7 +932,7 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
png_bytep srcptr;
png_bytep dstptr;
if ( _mmx_supported )
if (mmx_supported)
{
png_uint_32 len;
int diff;
@ -1089,7 +1086,7 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
png_bytep srcptr;
png_bytep dstptr;
if ( _mmx_supported )
if (mmx_supported)
{
png_uint_32 len;
int diff;
@ -1314,18 +1311,13 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
*/
void /* PRIVATE */
png_do_read_interlace(png_structp png_ptr)
png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
png_uint_32 transformations)
{
png_row_infop row_info = &(png_ptr->row_info);
png_bytep row = png_ptr->row_buf + 1;
int pass = png_ptr->pass;
png_uint_32 transformations = png_ptr->transformations;
png_debug(1,"in png_do_read_interlace\n");
if (_mmx_supported == 2) {
png_mmx_support();
}
if (mmx_supported == 2)
mmx_supported = mmxsupport();
if (row != NULL && row_info != NULL)
{
@ -1528,7 +1520,7 @@ png_do_read_interlace(png_structp png_ptr)
// New code by Nirav Chhatrapati - Intel Corporation
if ( _mmx_supported )
if (mmx_supported) // use MMX code if machine supports it
{
//--------------------------------------------------------------
if (pixel_bytes == 3)
@ -2406,7 +2398,7 @@ png_do_read_interlace(png_structp png_ptr)
sptr-= pixel_bytes;
}
}
} // end of _mmx_supported ========================================
} // end of mmx_supported =========================================
else /* MMX not supported: use modified C code - takes advantage
* of inlining of memcpy for a constant */
@ -4757,32 +4749,43 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
row, png_bytep prev_row, int filter)
{
#ifdef PNG_DEBUG
char filnm[10];
char filnm[6];
#endif
/* GRR: these are superseded by png_ptr->asm_flags: */
#define UseMMX 1
#define UseMMX_sub 1 // GRR: converted 20000730
#define UseMMX_up 1 // GRR: converted 20000729
#define UseMMX_avg 1 // GRR: converted 20000828 (+ 16-bit bugfix 20000916)
#define UseMMX_paeth 1 // GRR: converted 20000828
if (_mmx_supported == 2) {
png_mmx_support();
if (mmx_supported == 2)
mmx_supported = mmxsupport();
if (!mmx_supported)
{
png_read_filter_row_c(png_ptr, row_info, row, prev_row, filter);
return;
}
#ifdef PNG_DEBUG
png_debug(1, "in png_read_filter_row\n");
#if (UseMMX == 1)
png_debug1(0,"%s, ", "MMX");
#else
png_debug1(0,"%s, ", "x86");
#endif
switch (filter)
{
case 0: sprintf(filnm, "none");
break;
case 1: sprintf(filnm, "sub-%s", "MMX");
case 1: sprintf(filnm, "sub");
break;
case 2: sprintf(filnm, "up-%s", "MMX");
case 2: sprintf(filnm, "up");
break;
case 3: sprintf(filnm, "avg-%s", "MMX");
case 3: sprintf(filnm, "avg");
break;
case 4: sprintf(filnm, "Paeth-%s", "MMX");
case 4: sprintf(filnm, "Paeth");
break;
default: sprintf(filnm, "unknw");
break;
@ -4792,7 +4795,7 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
png_debug2(0, "pixdepth=%2d, bytes=%d, ", (int)row_info->pixel_depth,
(int)((row_info->pixel_depth + 7) >> 3));
png_debug1(0,"rowbytes=%8ld\n", row_info->rowbytes);
#endif /* PNG_DEBUG */
#endif
switch (filter)
{
@ -4800,13 +4803,13 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
break;
case PNG_FILTER_VALUE_SUB:
if (
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
#if (UseMMX_sub == 1)
if ((row_info->pixel_depth > 8) && (row_info->rowbytes >= 128))
{
png_read_filter_row_mmx_sub(row_info, row);
}
else
#endif
{
png_uint_32 i;
png_uint_32 istop = row_info->rowbytes;
@ -4823,35 +4826,33 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
break;
case PNG_FILTER_VALUE_UP:
if (
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
#if (UseMMX_up == 1)
if ((row_info->pixel_depth > 8) && (row_info->rowbytes >= 128))
{
png_read_filter_row_mmx_up(row_info, row, prev_row);
}
else
#endif
{
png_bytep rp;
png_bytep pp;
png_uint_32 i;
png_uint_32 istop = row_info->rowbytes;
png_bytep rp = row;
png_bytep pp = prev_row;
for (i = 0; i < istop; ++i)
for (i = 0, rp = row, pp = prev_row;
i < row_info->rowbytes; i++, rp++, pp++)
{
*rp = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff);
rp++;
*rp = (png_byte)(((int)(*rp) + (int)(*pp)) & 0xff);
}
} //end !UseMMX_up
break;
case PNG_FILTER_VALUE_AVG:
if (
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
#if (UseMMX_avg == 1)
if ((row_info->pixel_depth > 8) && (row_info->rowbytes >= 128))
{
png_read_filter_row_mmx_avg(row_info, row, prev_row);
}
else
#endif
{
png_uint_32 i;
png_bytep rp = row;
@ -4877,13 +4878,13 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
break;
case PNG_FILTER_VALUE_PAETH:
if (
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
#if (UseMMX_paeth == 1)
if ((row_info->pixel_depth > 8) && (row_info->rowbytes >= 128))
{
png_read_filter_row_mmx_paeth(row_info, row, prev_row);
}
else
#endif
{
png_uint_32 i;
png_bytep rp = row;
@ -4891,7 +4892,7 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
png_bytep lp = row;
png_bytep cp = prev_row;
png_uint_32 bpp = (row_info->pixel_depth + 7) >> 3;
png_uint_32 istop = row_info->rowbytes - bpp;
png_uint_32 istop=row_info->rowbytes - bpp;
for (i = 0; i < bpp; i++)
{
@ -4899,7 +4900,7 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
rp++;
}
for (i = 0; i < istop; i++) /* use leftover rp,pp */
for (i = 0; i < istop; i++) // use leftover rp,pp
{
int a, b, c, pa, pb, pc, p;
@ -4929,7 +4930,7 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
p = c;
*/
p = (pa <= pb && pa <= pc) ? a : (pb <= pc) ? b : c;
p = (pa <= pb && pa <=pc) ? a : (pb <= pc) ? b : c;
*rp = (png_byte)(((int)(*rp) + p) & 0xff);
rp++;
@ -4938,7 +4939,7 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
break;
default:
png_warning(png_ptr, "Ignoring bad row-filter type");
png_warning(png_ptr, "Ignoring bad adaptive filter type");
*row=0;
break;
}
@ -4963,24 +4964,85 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
// [is there a way to signal that a *single* function should
// not be inlined? is there a way to modify the label for
// each inlined instance, e.g., by appending _1, _2, etc.?
// maybe if don't use leading "." in label name? (nope...sigh)]
// maybe if don't use leading "." in label name? (not tested)]
int PNGAPI
png_mmx_support(void)
#ifdef ORIG_THAT_USED_TO_CLOBBER_EBX
int mmxsupport(void)
{
int mmx_supported_local = 0;
__asm__ __volatile__ (
"pushl %%ebx \n\t" // ebx gets clobbered by CPUID instruction
"pushl %%ecx \n\t" // so does ecx...
"pushl %%edx \n\t" // ...and edx (but ecx & edx safe on Linux)
// ".byte 0x66 \n\t" // convert 16-bit pushf to 32-bit pushfd
// "pushf \n\t" // 16-bit pushf
// "pushf \n\t" // save Eflag to stack
"pushfl \n\t" // save Eflag to stack
"popl %%eax \n\t" // get Eflag from stack into eax
"movl %%eax, %%ecx \n\t" // make another copy of Eflag in ecx
"xorl $0x200000, %%eax \n\t" // toggle ID bit in Eflag (i.e., bit 21)
"pushl %%eax \n\t" // save modified Eflag back to stack
// ".byte 0x66 \n\t" // convert 16-bit popf to 32-bit popfd
// "popf \n\t" // 16-bit popf
// "popf \n\t" // restore modified value to Eflag reg
"popfl \n\t" // restore modified value to Eflag reg
"pushfl \n\t" // save Eflag to stack
"popl %%eax \n\t" // get Eflag from stack
"xorl %%ecx, %%eax \n\t" // compare new Eflag with original Eflag
"jz .NOT_SUPPORTED \n\t" // if same, CPUID instr. is not supported
"xorl %%eax, %%eax \n\t" // set eax to zero
// ".byte 0x0f, 0xa2 \n\t" // CPUID instruction (two-byte opcode)
"cpuid \n\t" // get the CPU identification info
"cmpl $1, %%eax \n\t" // make sure eax return non-zero value
"jl .NOT_SUPPORTED \n\t" // if eax is zero, MMX is not supported
"xorl %%eax, %%eax \n\t" // set eax to zero and...
"incl %%eax \n\t" // ...increment eax to 1. This pair is
// faster than the instruction "mov eax, 1"
"cpuid \n\t" // get the CPU identification info again
"andl $0x800000, %%edx \n\t" // mask out all bits but MMX bit (23)
"cmpl $0, %%edx \n\t" // 0 = MMX not supported
"jz .NOT_SUPPORTED \n\t" // non-zero = yes, MMX IS supported
"movl $1, %0 \n\t" // set return value to 1 and fall through
".NOT_SUPPORTED: \n\t" // target label for jump instructions
"movl %0, %%eax \n\t" // move return value to eax
// DONE
: "=m" (mmx_supported_local) // %0 (output list: memory only)
: // any variables used on input (none)
: "%eax", "%ebx", // clobber list
"%ecx", "%edx"
// , "memory" // if write to a variable gcc thought was in a reg
// , "cc" // "condition codes" (flag bits)
);
//mmx_supported_local=0; // test code for force don't support MMX
//printf("MMX : %u (1=MMX supported)\n",mmx_supported_local);
return mmx_supported_local;
}
#else /* !ORIG_THAT_USED_TO_CLOBBER_EBX */
int mmxsupport(void)
{
__asm__ __volatile__ (
"pushl %%ebx \n\t" // ebx gets clobbered by CPUID instruction
"pushl %%ecx \n\t" // so does ecx...
"pushl %%edx \n\t" // ...and edx (but ecx & edx safe on Linux)
// ".byte 0x66 \n\t" // convert 16-bit pushf to 32-bit pushfd
// "pushf \n\t" // save Eflag to stack
"pushfl \n\t" // save Eflag to stack
"popl %%eax \n\t" // get Eflag from stack into eax
"movl %%eax, %%ecx \n\t" // make another copy of Eflag in ecx
"xorl $0x200000, %%eax \n\t" // toggle ID bit in Eflag (i.e., bit 21)
"pushl %%eax \n\t" // save modified Eflag back to stack
// ".byte 0x66 \n\t" // convert 16-bit popf to 32-bit popfd
// "popf \n\t" // restore modified value to Eflag reg
"popfl \n\t" // restore modified value to Eflag reg
"pushfl \n\t" // save Eflag to stack
"popl %%eax \n\t" // get Eflag from stack
@ -5002,7 +5064,6 @@ png_mmx_support(void)
"jz .NOT_SUPPORTED \n\t" // non-zero = yes, MMX IS supported
"movl $1, %%eax \n\t" // set return value to 1
"movl %%eax, _mmx_supported \n\t" // save in global static variable, too
"popl %%edx \n\t" // restore edx
"popl %%ecx \n\t" // restore ecx
"popl %%ebx \n\t" // restore ebx ("row" in png_do_interlace)
@ -5010,14 +5071,13 @@ png_mmx_support(void)
".NOT_SUPPORTED: \n\t" // target label for jump instructions
"movl $0, %%eax \n\t" // set return value to 0
"movl %%eax, _mmx_supported \n\t" // save in global static variable, too
"popl %%edx \n\t" // restore edx
"popl %%ecx \n\t" // restore ecx
"popl %%ebx \n\t" // restore ebx ("row" in png_do_interlace)
// "ret \n\t" // DONE: no MMX support
// (fall through to standard C "ret")
: // output list (none)
: // "=m" (mmx_supported_local) // %0 (output list: memory only)
: // any variables used on input (none)
@ -5027,7 +5087,12 @@ png_mmx_support(void)
// , "cc" // "condition codes" (flag bits)
);
// return %%eax;
//mmx_supported_local=0; // test code for force don't support MMX
//printf("MMX : %u (1=MMX supported)\n",mmx_supported_local);
//return mmx_supported_local;
}
#endif /* ?ORIG_THAT_USED_TO_CLOBBER_EBX */
#endif /* PNG_ASSEMBLER_CODE_SUPPORTED && PNG_USE_PNGGCCRD */

11
pngget.c
View File

@ -1,9 +1,9 @@
/* pngget.c - retrieval of values from info struct
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*/
@ -807,7 +807,7 @@ png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr,
png_byte PNGAPI
png_get_rgb_to_gray_status (png_structp png_ptr)
{
return (png_byte)(png_ptr? png_ptr->rgb_to_gray_status : 0);
return png_ptr->rgb_to_gray_status;
}
#endif
@ -815,7 +815,7 @@ png_get_rgb_to_gray_status (png_structp png_ptr)
png_voidp PNGAPI
png_get_user_chunk_ptr(png_structp png_ptr)
{
return (png_ptr? png_ptr->user_chunk_ptr : NULL);
return (png_ptr->user_chunk_ptr);
}
#endif
@ -823,6 +823,5 @@ png_get_user_chunk_ptr(png_structp png_ptr)
png_uint_32 PNGAPI
png_get_compression_buffer_size(png_structp png_ptr)
{
return (png_uint_32)(png_ptr? png_ptr->zbuf_size : 0L);
return(png_ptr->zbuf_size);
}

4
pngmem.c
View File

@ -1,9 +1,9 @@
/* pngmem.c - stub functions for memory allocation
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*

45
pngpread.c
View File

@ -1,9 +1,9 @@
/* pngpread.c - read a png file in push mode
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*/
@ -772,29 +772,18 @@ png_push_process_row(png_structp png_ptr)
if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
{
if (png_ptr->pass < 6)
/* old interface (pre-1.0.9):
png_do_read_interlace(&(png_ptr->row_info),
png_ptr->row_buf + 1, png_ptr->pass, png_ptr->transformations);
*/
png_do_read_interlace(png_ptr);
switch (png_ptr->pass)
{
switch (png_ptr->pass)
{
case 0:
{
int i;
for (i = 0; i < 8 && png_ptr->pass == 0; i++)
{
png_push_have_row(png_ptr, png_ptr->row_buf + 1);
png_read_push_finish_row(png_ptr); /* updates png_ptr->pass */
}
if (png_ptr->pass == 2) /* pass 1 might be empty */
{
for (i = 0; i < 4 && png_ptr->pass == 2; i++)
{
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
png_read_push_finish_row(png_ptr);
}
break;
}
@ -806,7 +795,7 @@ png_push_process_row(png_structp png_ptr)
png_push_have_row(png_ptr, png_ptr->row_buf + 1);
png_read_push_finish_row(png_ptr);
}
if (png_ptr->pass == 2) /* skip top 4 generated rows */
if (png_ptr->pass == 2)
{
for (i = 0; i < 4 && png_ptr->pass == 2; i++)
{
@ -829,14 +818,6 @@ png_push_process_row(png_structp png_ptr)
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
if (png_ptr->pass == 4) /* pass 3 might be empty */
{
for (i = 0; i < 2 && png_ptr->pass == 4; i++)
{
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
}
break;
}
case 3:
@ -847,7 +828,7 @@ png_push_process_row(png_structp png_ptr)
png_push_have_row(png_ptr, png_ptr->row_buf + 1);
png_read_push_finish_row(png_ptr);
}
if (png_ptr->pass == 4) /* skip top two generated rows */
if (png_ptr->pass == 4)
{
for (i = 0; i < 2 && png_ptr->pass == 4; i++)
{
@ -870,11 +851,6 @@ png_push_process_row(png_structp png_ptr)
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
if (png_ptr->pass == 6) /* pass 5 might be empty */
{
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
break;
}
case 5:
@ -885,7 +861,7 @@ png_push_process_row(png_structp png_ptr)
png_push_have_row(png_ptr, png_ptr->row_buf + 1);
png_read_push_finish_row(png_ptr);
}
if (png_ptr->pass == 6) /* skip top generated row */
if (png_ptr->pass == 6)
{
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
@ -952,11 +928,6 @@ png_read_push_finish_row(png_structp png_ptr)
do
{
png_ptr->pass++;
if ((png_ptr->pass == 1 && png_ptr->width < 5) ||
(png_ptr->pass == 3 && png_ptr->width < 3) ||
(png_ptr->pass == 5 && png_ptr->width < 2))
png_ptr->pass++;
if (png_ptr->pass >= 7)
break;

22
pngread.c
View File

@ -1,9 +1,9 @@
/* pngread.c - read a PNG file
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -246,8 +246,6 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
else
png_error(png_ptr, "PNG file corrupted by ASCII conversion");
}
if (num_checked < 3)
png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE;
}
for(;;)
@ -649,15 +647,6 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
png_memcpy_check(png_ptr, png_ptr->prev_row, png_ptr->row_buf,
png_ptr->rowbytes + 1);
#if defined(PNG_MNG_FEATURES_SUPPORTED)
if((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
(png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
{
/* Intrapixel differencing */
png_do_read_intrapixel(&(png_ptr->row_info), png_ptr->row_buf + 1);
}
#endif
if (png_ptr->transformations)
png_do_read_transformations(png_ptr);
@ -667,11 +656,8 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
(png_ptr->transformations & PNG_INTERLACE))
{
if (png_ptr->pass < 6)
/* old interface (pre-1.0.9):
png_do_read_interlace(&(png_ptr->row_info),
png_ptr->row_buf + 1, png_ptr->pass, png_ptr->transformations);
*/
png_do_read_interlace(png_ptr);
if (dsp_row != NULL)
png_combine_row(png_ptr, dsp_row,
@ -715,7 +701,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
* not called png_set_interlace_handling(), the display_row buffer will
* be ignored, so pass NULL to it.
*
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.0.9beta10
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.0.9beta2
*/
void PNGAPI
@ -764,7 +750,7 @@ png_read_rows(png_structp png_ptr, png_bytepp row,
* only call this function once. If you desire to have an image for
* each pass of a interlaced image, use png_read_rows() instead.
*
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.0.9beta10
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.0.9beta2
*/
void PNGAPI
png_read_image(png_structp png_ptr, png_bytepp image)

4
pngrio.c
View File

@ -1,9 +1,9 @@
/* pngrio.c - functions for data input
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*

64
pngrtran.c
View File

@ -1,9 +1,9 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -4053,63 +4053,3 @@ png_build_gamma_table(png_structp png_ptr)
/* To do: install integer version of png_build_gamma_table here */
#endif
#if defined(PNG_MNG_FEATURES_SUPPORTED)
/* undoes intrapixel differencing */
void /* PRIVATE */
png_do_read_intrapixel(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_read_intrapixel\n");
if (
#if defined(PNG_USELESS_TESTS_SUPPORTED)
row != NULL && row_info != NULL &&
#endif
(row_info->color_type & PNG_COLOR_MASK_COLOR))
{
int bytes_per_pixel;
png_uint_32 row_width = row_info->width;
if (row_info->bit_depth == 8)
{
png_bytep rp;
png_uint_32 i;
if (row_info->color_type == PNG_COLOR_TYPE_RGB)
bytes_per_pixel = 3;
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
bytes_per_pixel = 4;
else
return;
for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
{
*(rp) = (png_byte)((256 + *rp + *(rp+1))&0xff);
*(rp+2) = (png_byte)((256 + *(rp+2) + *(rp+1))&0xff);
}
}
else if (row_info->bit_depth == 16)
{
png_bytep rp;
png_uint_32 i;
if (row_info->color_type == PNG_COLOR_TYPE_RGB)
bytes_per_pixel = 6;
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
bytes_per_pixel = 8;
else
return;
for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
{
png_uint_32 s0=*(rp )<<8 | *(rp+1);
png_uint_32 s1=*(rp+2)<<8 | *(rp+3);
png_uint_32 s2=*(rp+4)<<8 | *(rp+5);
png_uint_32 red=(65536+s0+s1)&0xffff;
png_uint_32 blue=(65536+s2+s1)&0xffff;
*(rp ) = (png_byte)((red>>8)&0xff);
*(rp+1) = (png_byte)(red&0xff);
*(rp+4) = (png_byte)((blue>>8)&0xff);
*(rp+5) = (png_byte)(blue&0xff);
}
}
}
}
#endif /* PNG_MNG_FEATURES_SUPPORTED */

144
pngrutil.c
View File

@ -1,9 +1,9 @@
/* pngrutil.c - utilities to read a PNG file
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -174,7 +174,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
png_charp text = NULL;
png_size_t text_size;
if (comp_type == PNG_COMPRESSION_TYPE_BASE)
if (comp_type == PNG_TEXT_COMPRESSION_zTXt)
{
int ret = Z_OK;
png_ptr->zstream.next_in = (png_bytep)(chunkdata + prefix_size);
@ -266,13 +266,6 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
png_warning(png_ptr,
"Incomplete compressed datastream in chunk other than IDAT");
#endif
text_size=prefix_size;
if (text == NULL)
{
text = (png_charp)png_malloc(png_ptr, text_size+1);
png_memcpy(text, chunkdata, prefix_size);
}
*(text + text_size) = 0x00;
}
inflateReset(&png_ptr->zstream);
@ -282,7 +275,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
chunkdata = text;
*newlength=text_size;
}
else /* if (comp_type != PNG_COMPRESSION_TYPE_BASE) */
else /* if (comp_type != PNG_TEXT_COMPRESSION_zTXt) */
{
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
char umsg[50];
@ -293,8 +286,10 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
png_warning(png_ptr, "Unknown zTXt compression type");
#endif
*(chunkdata + prefix_size) = 0x00;
*newlength=prefix_size;
/* Copy what we can of the error message into the text chunk */
text_size = (png_size_t)(chunklength - (text - chunkdata));
text_size = sizeof(msg) > text_size ? text_size : sizeof(msg);
png_memcpy(text, msg, text_size);
}
return chunkdata;
@ -358,33 +353,8 @@ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
if (compression_type != PNG_COMPRESSION_TYPE_BASE)
png_error(png_ptr, "Unknown compression method in IHDR");
#if defined(PNG_MNG_FEATURES_SUPPORTED)
/* Accept filter_method 64 (intrapixel differencing) only if
* 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
* 2. Libpng did not read a PNG signature (this filter_method is only
* used in PNG datastreams that are embedded in MNG datastreams) and
* 3. The application called png_permit_mng_features with a mask that
* included PNG_FLAG_MNG_FILTER_64 and
* 4. The filter_method is 64 and
* 5. The color_type is RGB or RGBA
*/
if((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&png_ptr->mng_features_permitted)
png_warning(png_ptr,"MNG features are not allowed in a PNG datastream\n");
if(filter_type != PNG_FILTER_TYPE_BASE)
{
if(!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
(filter_type == PNG_INTRAPIXEL_DIFFERENCING) &&
((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
(color_type == PNG_COLOR_TYPE_RGB ||
color_type == PNG_COLOR_TYPE_RGB_ALPHA)))
png_error(png_ptr, "Unknown filter method in IHDR");
if(png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)
png_warning(png_ptr, "Invalid filter method in IHDR");
}
#else
if(filter_type != PNG_FILTER_TYPE_BASE)
if (filter_type != PNG_FILTER_TYPE_BASE)
png_error(png_ptr, "Unknown filter method in IHDR");
#endif
/* set internal variables */
png_ptr->width = width;
@ -392,7 +362,6 @@ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_ptr->bit_depth = (png_byte)bit_depth;
png_ptr->interlaced = (png_byte)interlace_type;
png_ptr->color_type = (png_byte)color_type;
png_ptr->filter_type = (png_byte)filter_type;
/* find number of channels */
switch (png_ptr->color_type)
@ -428,7 +397,7 @@ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
void /* PRIVATE */
png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
png_color palette[PNG_MAX_PALETTE_LENGTH];
png_colorp palette;
int num, i;
#ifndef PNG_NO_POINTER_INDEXING
png_colorp pal_ptr;
@ -457,7 +426,7 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif
if (length > 3*PNG_MAX_PALETTE_LENGTH || length % 3)
if (length > 768 || length % 3)
{
if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
{
@ -473,6 +442,8 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
num = (int)length / 3;
palette = (png_colorp)png_zalloc(png_ptr, (uInt)num, sizeof (png_color));
#ifndef PNG_NO_POINTER_INDEXING
for (i = 0, pal_ptr = palette; i < num; i++, pal_ptr++)
{
@ -522,6 +493,7 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
else
{
png_chunk_warning(png_ptr, "CRC error");
png_zfree(png_ptr, palette);
return;
}
}
@ -532,7 +504,15 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
}
#endif
png_ptr->palette = palette;
png_ptr->num_palette = (png_uint_16)num;
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0);
png_ptr->free_me |= PNG_FREE_PLTE;
#else
png_ptr->flags |= PNG_FLAG_FREE_PLTE;
#endif
png_set_PLTE(png_ptr, info_ptr, palette, num);
#if defined(PNG_READ_tRNS_SUPPORTED)
@ -1070,8 +1050,6 @@ png_handle_iCCP(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
slength, prefix_length, &data_length);
profile_length = data_length - prefix_length;
/* Check the profile_size recorded in the first 32 bits of the ICC profile */
profile_size = ((*(chunkdata+prefix_length))<<24) |
((*(chunkdata+prefix_length+1))<<16) |
((*(chunkdata+prefix_length+2))<< 8) |
@ -1087,7 +1065,7 @@ png_handle_iCCP(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
png_set_iCCP(png_ptr, info_ptr, chunkdata, compression_type,
chunkdata + prefix_length, profile_length);
chunkdata + prefix_length, data_length-prefix_length);
png_free(png_ptr, chunkdata);
}
#endif /* PNG_READ_iCCP_SUPPORTED */
@ -1224,8 +1202,6 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
void /* PRIVATE */
png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
png_byte readbuf[PNG_MAX_PALETTE_LENGTH];
png_debug(1, "in png_handle_tRNS\n");
if (!(png_ptr->mode & PNG_HAVE_IHDR))
@ -1263,7 +1239,8 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
return;
}
png_crc_read(png_ptr, readbuf, (png_size_t)length);
png_ptr->trans = (png_bytep)png_malloc(png_ptr, length);
png_crc_read(png_ptr, png_ptr->trans, (png_size_t)length);
png_ptr->num_trans = (png_uint_16)length;
}
else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
@ -1308,7 +1285,15 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
if (png_crc_finish(png_ptr, 0))
return;
png_set_tRNS(png_ptr, info_ptr, readbuf, png_ptr->num_trans,
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
png_ptr->free_me |= PNG_FREE_TRNS;
#else
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
png_ptr->flags |= PNG_FLAG_FREE_TRNS;
#endif
png_set_tRNS(png_ptr, info_ptr, png_ptr->trans, png_ptr->num_trans,
&(png_ptr->trans_values));
}
#endif
@ -1407,7 +1392,6 @@ void /* PRIVATE */
png_handle_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
int num, i;
png_uint_16 readbuf[PNG_MAX_PALETTE_LENGTH];
png_debug(1, "in png_handle_hIST\n");
@ -1432,26 +1416,34 @@ png_handle_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
return;
}
num = (int)length / 2 ;
if (num != png_ptr->num_palette)
if (length != (png_uint_32)(2 * png_ptr->num_palette))
{
png_warning(png_ptr, "Incorrect hIST chunk length");
png_crc_finish(png_ptr, length);
return;
}
num = (int)length / 2 ;
png_ptr->hist = (png_uint_16p)png_malloc(png_ptr,
(png_uint_32)(num * sizeof (png_uint_16)));
for (i = 0; i < num; i++)
{
png_byte buf[2];
png_crc_read(png_ptr, buf, 2);
readbuf[i] = png_get_uint_16(buf);
png_ptr->hist[i] = png_get_uint_16(buf);
}
if (png_crc_finish(png_ptr, 0))
return;
png_set_hIST(png_ptr, info_ptr, readbuf);
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0);
png_ptr->free_me |= PNG_FREE_HIST;
#else
png_ptr->flags |= PNG_FLAG_FREE_HIST;
#endif
png_set_hIST(png_ptr, info_ptr, png_ptr->hist);
}
#endif
@ -1930,11 +1922,6 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
else
{
comp_type = *(++text);
if (comp_type != PNG_TEXT_COMPRESSION_zTXt)
{
png_warning(png_ptr, "Unknown compression type in zTXt chunk");
comp_type = PNG_TEXT_COMPRESSION_zTXt;
}
text++; /* skip the compression_method byte */
}
prefix_len = text - chunkdata;
@ -2165,9 +2152,13 @@ png_check_chunk_name(png_structp png_ptr, png_bytep chunk_name)
a zero indicates the pixel is to be skipped. This is in addition
to any alpha or transparency value associated with the pixel. If
you want all pixels to be combined, pass 0xff (255) in mask. */
#ifndef PNG_HAVE_ASSEMBLER_COMBINE_ROW
void /* PRIVATE */
png_combine_row(png_structp png_ptr, png_bytep row, int mask)
#ifdef PNG_HAVE_ASSEMBLER_COMBINE_ROW
png_combine_row_c
#else
png_combine_row
#endif /* PNG_HAVE_ASSEMBLER_COMBINE_ROW */
(png_structp png_ptr, png_bytep row, int mask)
{
png_debug(1,"in png_combine_row\n");
if (mask == 0xff)
@ -2367,24 +2358,25 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
}
}
}
#endif /* !PNG_HAVE_ASSEMBLER_COMBINE_ROW */
#ifdef PNG_READ_INTERLACING_SUPPORTED
#ifndef PNG_HAVE_ASSEMBLER_READ_INTERLACE /* else in pngvcrd.c, pnggccrd.c */
#if defined(PNG_READ_INTERLACING_SUPPORTED)
void /* PRIVATE */
png_do_read_interlace(png_structp png_ptr)
#ifdef PNG_HAVE_ASSEMBLER_READ_INTERLACE
png_do_read_interlace_c
#else
png_do_read_interlace
#endif /* PNG_HAVE_ASSEMBLER_READ_INTERLACE */
(png_row_infop row_info, png_bytep row, int pass,
png_uint_32 transformations)
{
png_row_infop row_info = &(png_ptr->row_info);
png_bytep row = png_ptr->row_buf + 1;
int pass = png_ptr->pass;
png_uint_32 transformations = png_ptr->transformations;
#ifdef PNG_USE_LOCAL_ARRAYS
/* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* offset to next interlace block */
const int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
#endif
png_debug(1,"in png_do_read_interlace (stock C version)\n");
png_debug(1,"in png_do_read_interlace\n");
if (row != NULL && row_info != NULL)
{
png_uint_32 final_width;
@ -2594,12 +2586,15 @@ png_do_read_interlace(png_structp png_ptr)
return;
#endif
}
#endif /* !PNG_HAVE_ASSEMBLER_READ_INTERLACE */
#endif /* PNG_READ_INTERLACING_SUPPORTED */
#endif
#ifndef PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
void /* PRIVATE */
png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep row,
#ifdef PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
png_read_filter_row_c
#else
png_read_filter_row
#endif /* PNG_HAVE_ASSEMBLER_READ_FILTER_ROW */
(png_structp png_ptr, png_row_infop row_info, png_bytep row,
png_bytep prev_row, int filter)
{
png_debug(1, "in png_read_filter_row\n");
@ -2720,7 +2715,6 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep row,
break;
}
}
#endif /* !PNG_HAVE_ASSEMBLER_READ_FILTER_ROW */
void /* PRIVATE */
png_read_finish_row(png_structp png_ptr)

65
pngset.c
View File

@ -1,9 +1,9 @@
/* pngset.c - storage of image information into info struct
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -133,31 +133,12 @@ png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
void PNGAPI
png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
{
int i;
png_debug1(1, "in %s storage function\n", "hIST");
if (png_ptr == NULL || info_ptr == NULL)
return;
if (info_ptr->num_palette == 0)
png_warning(png_ptr,
"Palette size 0, hIST allocation skipped.");
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0);
#endif
png_ptr->hist = (png_uint_16p)png_malloc(png_ptr,
(png_uint_32)(info_ptr->num_palette * sizeof (png_uint_16)));
for (i = 0; i < info_ptr->num_palette; i++)
png_ptr->hist[i] = hist[i];
info_ptr->hist = png_ptr->hist;
info_ptr->hist = hist;
info_ptr->valid |= PNG_INFO_hIST;
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_HIST;
#else
png_ptr->flags |= PNG_FLAG_FREE_HIST;
#endif
}
#endif
@ -339,26 +320,9 @@ png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
if (png_ptr == NULL || info_ptr == NULL)
return;
/*
* It may not actually be necessary to set png_ptr->palette here;
* we do it for backward compatibility with the way the png_handle_tRNS
* function used to do the allocation.
*/
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0);
#endif
png_ptr->palette = (png_colorp)png_zalloc(png_ptr, (uInt)num_palette,
sizeof (png_color));
memcpy(png_ptr->palette, palette, num_palette * sizeof (png_color));
info_ptr->palette = png_ptr->palette;
info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette;
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_PLTE;
#else
png_ptr->flags |= PNG_FLAG_FREE_PLTE;
#endif
info_ptr->palette = palette;
info_ptr->num_palette = (png_uint_16)num_palette;
info_ptr->valid |= PNG_INFO_PLTE;
}
@ -667,23 +631,7 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
return;
if (trans != NULL)
{
/*
* It may not actually be necessary to set png_ptr->trans here;
* we do it for backward compatibility with the way the png_handle_tRNS
* function used to do the allocation.
*/
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
#endif
png_ptr->trans = info_ptr->trans = png_malloc(png_ptr, num_trans);
memcpy(info_ptr->trans, trans, num_trans);
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_TRNS;
#else
png_ptr->flags |= PNG_FLAG_FREE_TRNS;
#endif
}
info_ptr->trans = trans;
if (trans_values != NULL)
{
@ -906,4 +854,3 @@ png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask)
if (png_ptr && info_ptr)
info_ptr->valid &= ~(mask);
}

15
pngtest.c
View File

@ -1,9 +1,9 @@
/* pngtest.c - a simple test program to test libpng
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -50,14 +50,6 @@
# define FCLOSE(file) fclose(file)
#endif
#if defined(PNG_NO_STDIO)
#if defined(_WIN32_WCE)
typedef HANDLE png_FILE_p;
#else
typedef FILE * png_FILE_p;
#endif
#endif
/* Makes pngtest verbose so we can find problems (needs to be before png.h) */
#ifndef PNG_DEBUG
#define PNG_DEBUG 0
@ -265,7 +257,6 @@ static int wrote_question = 0;
not reading from a standard C stream, you should create a replacement
read_data function and use it at run time with png_set_read_fn(), rather
than changing the library. */
#ifndef USE_FAR_KEYWORD
static void
pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
@ -1458,4 +1449,4 @@ main(int argc, char *argv[])
}
/* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_0_9beta10 your_png_h_is_not_version_1_0_9beta10;
typedef version_1_0_9beta2 your_png_h_is_not_version_1_0_9beta2;

5
pngtrans.c
View File

@ -1,9 +1,9 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*/
@ -606,4 +606,3 @@ png_get_user_transform_ptr(png_structp png_ptr)
return (NULL);
#endif
}

182
pngvcrd.c
View File

@ -2,20 +2,13 @@
*
* For Intel x86 CPU and Microsoft Visual C++ compiler
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* Copyright (c) 1998, Intel Corporation
*
* Contributed by Nirav Chhatrapati, Intel Corporation, 1998
* Interface to libpng contributed by Gilles Vollant, 1999
* Debugging and cleanup by Greg Roelofs, 2000, 2001
*
* In png_do_read_interlace() in libpng versions 1.0.3a through 1.0.4d,
* a sign error in the post-MMX cleanup code for each pixel_depth resulted
* in bad pixels at the beginning of some rows of some images, and also
* (due to out-of-range memory reads and writes) caused heap corruption
* when compiled with MSVC 6.0. The error was fixed in version 1.0.4e.
*
* [png_read_filter_row_mmx_avg() bpp == 2 bugfix, GRR 20000916]
*
@ -26,11 +19,19 @@
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED) && defined(PNG_USE_PNGVCRD)
/*
One of these might need to be defined.
#define DISABLE_PNGVCRD_COMBINE
#define DISABLE_PNGVCRD_INTERLACE
*/
static int mmx_supported=2;
void /* PRIVATE */
png_read_filter_row_c(png_structp png_ptr, png_row_infop row_info,
png_bytep row, png_bytep prev_row, int filter);
int PNGAPI
png_mmx_support(void)
static int mmxsupport()
{
int mmx_supported_local = 0;
_asm {
@ -82,7 +83,6 @@ NOT_SUPPORTED:
//mmx_supported_local=0; // test code for force don't support MMX
//printf("MMX : %u (1=MMX supported)\n",mmx_supported_local);
mmx_supported = mmx_supported_local;
return mmx_supported_local;
}
@ -106,12 +106,19 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
#ifdef PNG_USE_LOCAL_ARRAYS
const int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
#endif
#ifdef DISABLE_PNGVCRD_COMBINE
int save_mmx_supported = mmx_supported;
#endif
png_debug(1,"in png_combine_row_asm\n");
if (mmx_supported == 2) {
png_mmx_support();
}
#ifdef DISABLE_PNGVCRD_COMBINE
if ((png_ptr->transformations & PNG_INTERLACE) && png_ptr->pass != 6)
mmx_supported = 0;
else
#endif
if (mmx_supported == 2)
mmx_supported = mmxsupport();
if (mask == 0xff)
{
@ -300,7 +307,7 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
__int64 mask0=0x0102040810204080;
if ( mmx_supported )
if (mmx_supported)
{
srcptr = png_ptr->row_buf + 1;
dstptr = row;
@ -400,7 +407,7 @@ end8:
__int64 mask1=0x0101020204040808,
mask0=0x1010202040408080;
if ( mmx_supported )
if (mmx_supported)
{
srcptr = png_ptr->row_buf + 1;
dstptr = row;
@ -520,7 +527,7 @@ end16:
len = (png_ptr->width)&~7;
diff = (png_ptr->width)&7;
if ( mmx_supported )
if (mmx_supported)
{
_asm
{
@ -651,7 +658,7 @@ end24:
len = (png_ptr->width)&~7;
diff = (png_ptr->width)&7;
if ( mmx_supported )
if (mmx_supported)
{
_asm
{
@ -785,7 +792,7 @@ end32:
mask1=0x2020202040404040,
mask0=0x4040808080808080;
if ( mmx_supported )
if (mmx_supported)
{
srcptr = png_ptr->row_buf + 1;
dstptr = row;
@ -956,27 +963,43 @@ end48:
} /* end switch (png_ptr->row_info.pixel_depth) */
} /* end if (non-trivial mask) */
#ifdef DISABLE_PNGVCRD_COMBINE
mmx_supported = save_mmx_supported;
#endif
} /* end png_combine_row() */
#if defined(PNG_READ_INTERLACING_SUPPORTED)
void /* PRIVATE */
png_do_read_interlace(png_structp png_ptr)
png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
png_uint_32 transformations)
{
png_row_infop row_info = &(png_ptr->row_info);
png_bytep row = png_ptr->row_buf + 1;
int pass = png_ptr->pass;
png_uint_32 transformations = png_ptr->transformations;
#ifdef PNG_USE_LOCAL_ARRAYS
const int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
#endif
#ifdef DISABLE_PNGVCRD_INTERLACE
int save_mmx_supported = mmx_supported;
#endif
png_debug(1,"in png_do_read_interlace\n");
if (mmx_supported == 2) {
png_mmx_support();
}
#ifdef DISABLE_PNGVCRD_INTERLACE
/* In libpng versions 1.0.3a through 1.0.4d,
* a sign error in the post-MMX cleanup code for each pixel_depth resulted
* in bad pixels at the beginning of some rows of some images, and also
* (due to out-of-range memory reads and writes) caused heap corruption
* when compiled with MSVC 6.0. The error was fixed in version 1.0.4e,
* and the code appears to work completely correctly, so it is enabled
* by default.
*/
if (1) /* all passes caused a heap problem in the old code */
mmx_supported = 0;
else
#endif
if (mmx_supported == 2)
mmx_supported = mmxsupport();
if (row != NULL && row_info != NULL)
{
@ -1174,8 +1197,7 @@ png_do_read_interlace(png_structp png_ptr)
// sign fix by GRR
// NOTE: there is NO MMX code for 48-bit and 64-bit images
// use MMX routine if machine supports it
if ( mmx_supported )
if (mmx_supported) // use MMX routine if machine supports it
{
if (pixel_bytes == 3)
{
@ -1863,6 +1885,9 @@ loop4_pass4:
(png_uint_32)row_info->pixel_depth + 7) >> 3);
}
#ifdef DISABLE_PNGVCRD_INTERLACE
mmx_supported = save_mmx_supported;
#endif
}
#endif /* PNG_READ_INTERLACING_SUPPORTED */
@ -3298,7 +3323,7 @@ dsub3lp:
case 1:
{
// Placed here just in case this is a duplicate of the
// non-MMX code for the SUB filter in png_read_filter_row below
// non-MMX code for the SUB filter in png_read_filter_row above
//
// png_bytep rp;
// png_bytep lp;
@ -3633,50 +3658,61 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
row, png_bytep prev_row, int filter)
{
#ifdef PNG_DEBUG
char filnm[10];
char filnm[6];
#endif
#define UseMMX 1
if (mmx_supported == 2) {
png_mmx_support();
if (mmx_supported == 2)
mmx_supported = mmxsupport();
if (!mmx_supported)
{
png_read_filter_row_c(png_ptr, row_info, row, prev_row, filter);
return ;
}
#ifdef PNG_DEBUG
png_debug(1, "in png_read_filter_row\n");
# if (UseMMX == 1)
png_debug1(0,"%s, ", "MMX");
# else
png_debug1(0,"%s, ", "x86");
# endif
switch (filter)
{
case 0: sprintf(filnm, "none");
case 0: sprintf(filnm, "None ");
break;
case 1: sprintf(filnm, "sub-%s", "MMX");
case 1: sprintf(filnm, "Sub ");
break;
case 2: sprintf(filnm, "up-%s", "MMX");
case 2: sprintf(filnm, "Up ");
break;
case 3: sprintf(filnm, "avg-%s", "MMX");
case 3: sprintf(filnm, "Avg ");
break;
case 4: sprintf(filnm, "Paeth-%s", "MMX");
case 4: sprintf(filnm, "Paeth");
break;
default: sprintf(filnm, "unknw");
default: sprintf(filnm, "Unknw");
break;
}
png_debug2(0,"row=%5d, %s, ", png_ptr->row_number, filnm);
png_debug2(0, "pd=%2d, b=%d, ", (int)row_info->pixel_depth,
(int)((row_info->pixel_depth + 7) >> 3));
png_debug1(0,"len=%8d, ", row_info->rowbytes);
#endif /* PNG_DEBUG */
#endif
switch (filter)
{
case PNG_FILTER_VALUE_NONE:
break;
case PNG_FILTER_VALUE_SUB:
{
if (
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
#if (UseMMX == 1)
if ((row_info->pixel_depth > 8) &&
(row_info->rowbytes >= 128) )
{
png_read_filter_row_mmx_sub(row_info, row);
}
else
#endif
{
png_uint_32 i;
png_uint_32 istop = row_info->rowbytes;
@ -3689,43 +3725,41 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
*rp = (png_byte)(((int)(*rp) + (int)(*lp++)) & 0xff);
rp++;
}
}
} //end !UseMMX
break;
}
case PNG_FILTER_VALUE_UP:
{
if (
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
#if (UseMMX == 1)
if ((row_info->pixel_depth > 8) &&
(row_info->rowbytes >= 128) )
{
png_read_filter_row_mmx_up(row_info, row, prev_row);
}
} //end if UseMMX
else
#endif
{
png_bytep rp;
png_bytep pp;
png_uint_32 i;
png_uint_32 istop = row_info->rowbytes;
png_bytep rp = row;
png_bytep pp = prev_row;
for (i = 0; i < istop; ++i)
for (i = 0, rp = row, pp = prev_row;
i < row_info->rowbytes; i++, rp++, pp++)
{
*rp = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff);
rp++;
*rp = (png_byte)(((int)(*rp) + (int)(*pp)) & 0xff);
}
}
} //end !UseMMX
break;
}
case PNG_FILTER_VALUE_AVG:
{
if (
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
#if (UseMMX == 1)
if ((row_info->pixel_depth > 8) &&
(row_info->rowbytes >= 128) )
{
png_read_filter_row_mmx_avg(row_info, row, prev_row);
}
} //end if UseMMX
else
#endif
{
png_uint_32 i;
png_bytep rp = row;
@ -3747,19 +3781,19 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
((int)(*pp++ + *lp++) >> 1)) & 0xff);
rp++;
}
}
} //end !UseMMX
break;
}
case PNG_FILTER_VALUE_PAETH:
{
if (
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
#if (UseMMX == 1)
if ((row_info->pixel_depth > 8) &&
(row_info->rowbytes >= 128) )
{
png_read_filter_row_mmx_paeth(row_info, row, prev_row);
}
} //end if UseMMX
else
#endif
{
png_uint_32 i;
png_bytep rp = row;
@ -3810,15 +3844,13 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
*rp = (png_byte)(((int)(*rp) + p) & 0xff);
rp++;
}
}
} //end !UseMMX
break;
}
default:
png_warning(png_ptr, "Ignoring bad row filter type");
png_warning(png_ptr, "Ignoring bad adaptive filter type");
*row=0;
break;
}
}
#endif /* PNG_ASSEMBLER_CODE_SUPPORTED && PNG_USE_PNGVCRD */
#endif

4
pngwio.c
View File

@ -1,9 +1,9 @@
/* pngwio.c - functions for data output
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*

40
pngwrite.c
View File

@ -1,9 +1,9 @@
/* pngwrite.c - general routines to write a PNG file
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*/
@ -28,13 +28,6 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
{
png_write_sig(png_ptr); /* write PNG signature */
#if defined(PNG_MNG_FEATURES_SUPPORTED)
if((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&(png_ptr->mng_features_permitted))
{
png_warning(png_ptr,"MNG features are not allowed in a PNG datastream\n");
png_ptr->mng_features_permitted=0;
}
#endif
/* write IHDR information. */
png_write_IHDR(png_ptr, info_ptr->width, info_ptr->height,
info_ptr->bit_depth, info_ptr->color_type, info_ptr->compression_type,
@ -64,7 +57,7 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
#endif
#if defined(PNG_WRITE_iCCP_SUPPORTED)
if (info_ptr->valid & PNG_INFO_iCCP)
png_write_iCCP(png_ptr, info_ptr->iccp_name, PNG_COMPRESSION_TYPE_BASE,
png_write_iCCP(png_ptr, info_ptr->iccp_name, PNG_TEXT_COMPRESSION_zTXt,
info_ptr->iccp_profile, (int)info_ptr->iccp_proflen);
#endif
#if defined(PNG_WRITE_sBIT_SUPPORTED)
@ -382,11 +375,7 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
/* write end of PNG file */
png_write_IEND(png_ptr);
#if 0
/* This flush, added in libpng-1.0.8, causes some applications to crash
because they do not set png_ptr->output_flush_fn */
png_flush(png_ptr);
#endif
}
#if defined(PNG_WRITE_tIME_SUPPORTED)
@ -780,24 +769,6 @@ png_write_row(png_structp png_ptr, png_bytep row)
if (png_ptr->transformations)
png_do_write_transformations(png_ptr);
#if defined(PNG_MNG_FEATURES_SUPPORTED)
/* Write filter_method 64 (intrapixel differencing) only if
* 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
* 2. Libpng did not write a PNG signature (this filter_method is only
* used in PNG datastreams that are embedded in MNG datastreams) and
* 3. The application called png_permit_mng_features with a mask that
* included PNG_FLAG_MNG_FILTER_64 and
* 4. The filter_method is 64 and
* 5. The color_type is RGB or RGBA
*/
if((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
(png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
{
/* Intrapixel differencing */
png_do_write_intrapixel(&(png_ptr->row_info), png_ptr->row_buf + 1);
}
#endif
/* Find a filter if necessary, filter the row and write it out. */
png_write_find_filter(png_ptr, &(png_ptr->row_info));
@ -993,11 +964,6 @@ void PNGAPI
png_set_filter(png_structp png_ptr, int method, int filters)
{
png_debug(1, "in png_set_filter\n");
#if defined(PNG_MNG_FEATURES_SUPPORTED)
if((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
(method == PNG_INTRAPIXEL_DIFFERENCING))
method = PNG_FILTER_TYPE_BASE;
#endif
if (method == PNG_FILTER_TYPE_BASE)
{
switch (filters & (PNG_ALL_FILTERS | 0x07))

65
pngwtran.c
View File

@ -1,9 +1,9 @@
/* pngwtran.c - transforms the data in a row for PNG writers
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*/
@ -498,64 +498,3 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
}
}
#endif
#if defined(PNG_MNG_FEATURES_SUPPORTED)
/* undoes intrapixel differencing */
void /* PRIVATE */
png_do_write_intrapixel(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_write_intrapixel\n");
if (
#if defined(PNG_USELESS_TESTS_SUPPORTED)
row != NULL && row_info != NULL &&
#endif
(row_info->color_type & PNG_COLOR_MASK_COLOR))
{
int bytes_per_pixel;
png_uint_32 row_width = row_info->width;
if (row_info->bit_depth == 8)
{
png_bytep rp;
png_uint_32 i;
if (row_info->color_type == PNG_COLOR_TYPE_RGB)
bytes_per_pixel = 3;
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
bytes_per_pixel = 4;
else
return;
for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
{
*(rp) = (png_byte)((*rp - *(rp+1))&0xff);
*(rp+2) = (png_byte)((*(rp+2) - *(rp+1))&0xff);
}
}
else if (row_info->bit_depth == 16)
{
png_bytep rp;
png_uint_32 i;
if (row_info->color_type == PNG_COLOR_TYPE_RGB)
bytes_per_pixel = 6;
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
bytes_per_pixel = 8;
else
return;
for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
{
png_uint_32 s0=*(rp )<<8 | *(rp+1);
png_uint_32 s1=*(rp+2)<<8 | *(rp+3);
png_uint_32 s2=*(rp+4)<<8 | *(rp+5);
png_uint_32 red=(s0-s1)&0xffff;
png_uint_32 blue=(s2-s1)&0xffff;
*(rp ) = (png_byte)((red>>8)&0xff);
*(rp+1) = (png_byte)(red&0xff);
*(rp+4) = (png_byte)((blue>>8)&0xff);
*(rp+5) = (png_byte)(blue&0xff);
}
}
}
}
#endif /* PNG_MNG_FEATURES_SUPPORTED */

48
pngwutil.c
View File

@ -1,9 +1,9 @@
/* pngwutil.c - utilities to write a PNG file
*
* libpng 1.0.9beta10 - January 16, 2001
* libpng 1.0.9beta2 - November 19, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*/
@ -131,8 +131,6 @@ png_write_sig(png_structp png_ptr)
/* write the rest of the 8 byte signature */
png_write_data(png_ptr, &png_signature[png_ptr->sig_bytes],
(png_size_t)8 - png_ptr->sig_bytes);
if(png_ptr->sig_bytes < 3)
png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE;
}
#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_iCCP_SUPPORTED)
@ -421,24 +419,7 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
compression_type = PNG_COMPRESSION_TYPE_BASE;
}
/* Write filter_method 64 (intrapixel differencing) only if
* 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
* 2. Libpng did not write a PNG signature (this filter_method is only
* used in PNG datastreams that are embedded in MNG datastreams) and
* 3. The application called png_permit_mng_features with a mask that
* included PNG_FLAG_MNG_FILTER_64 and
* 4. The filter_method is 64 and
* 5. The color_type is RGB or RGBA
*/
if (
#if defined(PNG_MNG_FEATURES_SUPPORTED)
!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
(color_type == PNG_COLOR_TYPE_RGB ||
color_type == PNG_COLOR_TYPE_RGB_ALPHA) &&
(filter_type == PNG_INTRAPIXEL_DIFFERENCING)) &&
#endif
filter_type != PNG_FILTER_TYPE_BASE)
if (filter_type != PNG_FILTER_TYPE_BASE)
{
png_warning(png_ptr, "Invalid filter type specified");
filter_type = PNG_FILTER_TYPE_BASE;
@ -459,7 +440,6 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
png_ptr->bit_depth = (png_byte)bit_depth;
png_ptr->color_type = (png_byte)color_type;
png_ptr->interlaced = (png_byte)interlace_type;
png_ptr->filter_type = (png_byte)filter_type;
png_ptr->width = width;
png_ptr->height = height;
@ -677,7 +657,7 @@ png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type,
return;
}
if (compression_type != PNG_COMPRESSION_TYPE_BASE)
if (compression_type)
png_warning(png_ptr, "Unknown compression type in iCCP chunk");
if (profile == NULL)
@ -685,7 +665,7 @@ png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type,
if (profile_len)
profile_len = png_text_compress(png_ptr, profile, (png_size_t)profile_len,
PNG_COMPRESSION_TYPE_BASE, &comp);
PNG_TEXT_COMPRESSION_zTXt, &comp);
/* make sure we include the NULL after the name and the compression type */
png_write_chunk_start(png_ptr, (png_bytep)png_iCCP,
@ -1092,14 +1072,13 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
png_size_t key_len;
png_charp kp, dp;
int kflag;
int kwarn=0;
png_debug(1, "in png_check_keyword\n");
*new_key = NULL;
if (key == NULL || (key_len = png_strlen(key)) == 0)
{
png_warning(png_ptr, "zero length keyword");
png_chunk_warning(png_ptr, "zero length keyword");
return ((png_size_t)0);
}
@ -1116,9 +1095,9 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
char msg[40];
sprintf(msg, "invalid keyword character 0x%02X", *kp);
png_warning(png_ptr, msg);
png_chunk_warning(png_ptr, msg);
#else
png_warning(png_ptr, "invalid character in keyword");
png_chunk_warning(png_ptr, "invalid character in keyword");
#endif
*dp = ' ';
}
@ -1133,7 +1112,7 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
kp = *new_key + key_len - 1;
if (*kp == ' ')
{
png_warning(png_ptr, "trailing spaces removed from keyword");
png_chunk_warning(png_ptr, "trailing spaces removed from keyword");
while (*kp == ' ')
{
@ -1146,7 +1125,7 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
kp = *new_key;
if (*kp == ' ')
{
png_warning(png_ptr, "leading spaces removed from keyword");
png_chunk_warning(png_ptr, "leading spaces removed from keyword");
while (*kp == ' ')
{
@ -1168,7 +1147,6 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
else if (*kp == ' ')
{
key_len--;
kwarn=1;
}
else
{
@ -1177,19 +1155,17 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
}
}
*dp = '\0';
if(kwarn)
png_warning(png_ptr, "extra interior spaces removed from keyword");
if (key_len == 0)
{
png_free(png_ptr, *new_key);
*new_key=NULL;
png_warning(png_ptr, "Zero length keyword");
png_chunk_warning(png_ptr, "Zero length keyword");
}
if (key_len > 79)
{
png_warning(png_ptr, "keyword length must be 1 - 79 characters");
png_chunk_warning(png_ptr, "keyword length must be 1 - 79 characters");
new_key[79] = '\0';
key_len = 79;
}

2
projects/msvc/README.txt
View File

@ -1,5 +1,5 @@
Microsoft Developer Studio Build File, Format Version 6.00 for
libpng 1.0.9beta10 (January 16, 2001) and zlib
libpng 1.0.9beta2 (November 19, 2000) and zlib
Copyright (C) 2000 Simon-Pierre Cadieux
For conditions of distribution and use, see copyright notice in png.h

25
projects/msvc/png.rc
View File

@ -50,18 +50,23 @@
# define VS_SPECIALBUILD 0
#endif /* SPECIALBUILD */
#if ((PNG_LIBPNG_BUILD_TYPE & PNG_LIBPNG_BUILD_TYPEMASK) != \
PNG_LIBPNG_BUILD_STABLE)
# define VS_PRERELEASE VS_FF_PRERELEASE
# define VS_PATCHED 0
#if defined(PNG_LIBPNG_BUILD_TYPE)
# if (PNG_LIBPNG_BUILD_TYPE != stable)
# if(PNG_LIBPNG_BUILD_TYPE == patched)
# define VS_PATCHED VS_FF_PATCHED
# define VS_PRERELEASE 0
# else
# define VS_PRERELEASE VS_FF_PRERELEASE
# define VS_PATCHED 0
# endif
# else
# define VS_PRERELEASE 0
# define VS_PATCHED 0
# endif /* PNG_LIBPNG_BUILD_TYPE != stable */
#else
# define VS_PRERELEASE 0
# if (PNG_LIBPNG_BUILD_TYPE & PNG_LIBPNG_BUILD_PATCHED)
# define VS_PATCHED VS_FF_PATCHED
# else
# define VS_PATCHED 0
# endif
#endif
# define VS_PATCHED 0
#endif /* PNG_LIBPNG_BUILD_TYPE */
VS_VERSION_INFO VERSIONINFO
FILEVERSION PNG_LIBPNG_VER_MAJOR, PNG_LIBPNG_VER_MINOR, PNG_LIBPNG_VER_RELEASE, PNG_LIBPNG_VER_BUILD

7
projects/msvc/png32ms.def
View File

@ -6,7 +6,7 @@ LIBRARY
DESCRIPTION "PNG image compression library for Windows"
EXPORTS
;Version 1.0.9beta10
;Version 1.0.9beta2
png_build_grayscale_palette @1
png_check_sig @2
png_chunk_error @3
@ -176,8 +176,3 @@ EXPORTS
png_write_init_2 @167
png_access_version_number @168
; png_sig_bytes @169
; png_libpng_ver @170
png_init_io @171
png_convert_to_rfc1123 @172
png_set_invalid @173
png_mmx_support @174

8
projects/wince/READMEE.WCE
View File

@ -8,9 +8,9 @@ libpng for WindowsCE Rel.1.0
Introduction
============
This is libpng 1.0.9beta10 ported to WindowsCE 2.0 and 2.11.
libpng 1.0.9beta10 is a PNG reference library.
See README, a document of original libpng 1.0.9beta10.
This is libpng 1.0.9beta2 ported to WindowsCE 2.0 and 2.11.
libpng 1.0.9beta2 is a PNG reference library.
See README, a document of original libpng 1.0.9beta2.
zlib for WindowsCE
==================
@ -23,7 +23,7 @@ This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
See README and LICENSE, documents of original libpng 1.0.9beta10, for conditions
See README and LICENSE, documents of original libpng 1.0.9beta2, for conditions
of use and distribution.
Files

2
projects/wince/READMEJ.WCE
View File

@ -24,7 +24,7 @@ libpng
になったいかなる被害についても、作者、配布者、その他利用者以外の人物、
団体に責任をとる義務はないものとします。
その他、このソフトウェアの利用条件については、原版である libpng 1.0.9beta10に
その他、このソフトウェアの利用条件については、原版である libpng 1.0.9beta2に
準拠するものとします。詳しくは、付属の README,LICENSE をお読みください。
収録内容

0
projects/wince/grep
View File

276
projects/wince/lpngce.dsp
View File

File diff suppressed because it is too large Load Diff

4
projects/wince/png32ce.def
View File

@ -5,7 +5,7 @@
LIBRARY lpngce
EXPORTS
;Version 1.0.9beta10
;Version 1.0.9beta2
png_build_grayscale_palette @1
png_check_sig @2
png_chunk_error @3
@ -178,5 +178,3 @@ EXPORTS
png_libpng_ver @170
png_init_io @171
png_convert_to_rfc1123 @172
png_set_invalid @173
png_mmx_support @174

16
projects/wince/pngtest.dsp
View File

@ -571,6 +571,7 @@ DEP_CPP_PNGTE=\
"..\..\..\zlib\zconf.h"\
"..\..\..\zlib\zlib.h"\
"..\..\png.h"\
"..\..\pngasmrd.h"\
"..\..\pngconf.h"\
NODEP_CPP_PNGTE=\
@ -583,6 +584,7 @@ DEP_CPP_PNGTE=\
"..\..\..\zlib\zconf.h"\
"..\..\..\zlib\zlib.h"\
"..\..\png.h"\
"..\..\pngasmrd.h"\
"..\..\pngconf.h"\
NODEP_CPP_PNGTE=\
@ -595,6 +597,7 @@ DEP_CPP_PNGTE=\
"..\..\..\zlib\zconf.h"\
"..\..\..\zlib\zlib.h"\
"..\..\png.h"\
"..\..\pngasmrd.h"\
"..\..\pngconf.h"\
NODEP_CPP_PNGTE=\
@ -607,6 +610,7 @@ DEP_CPP_PNGTE=\
"..\..\..\zlib\zconf.h"\
"..\..\..\zlib\zlib.h"\
"..\..\png.h"\
"..\..\pngasmrd.h"\
"..\..\pngconf.h"\
NODEP_CPP_PNGTE=\
@ -619,6 +623,7 @@ DEP_CPP_PNGTE=\
"..\..\..\zlib\zconf.h"\
"..\..\..\zlib\zlib.h"\
"..\..\png.h"\
"..\..\pngasmrd.h"\
"..\..\pngconf.h"\
NODEP_CPP_PNGTE=\
@ -631,6 +636,7 @@ DEP_CPP_PNGTE=\
"..\..\..\zlib\zconf.h"\
"..\..\..\zlib\zlib.h"\
"..\..\png.h"\
"..\..\pngasmrd.h"\
"..\..\pngconf.h"\
NODEP_CPP_PNGTE=\
@ -643,6 +649,7 @@ DEP_CPP_PNGTE=\
"..\..\..\zlib\zconf.h"\
"..\..\..\zlib\zlib.h"\
"..\..\png.h"\
"..\..\pngasmrd.h"\
"..\..\pngconf.h"\
NODEP_CPP_PNGTE=\
@ -655,6 +662,7 @@ DEP_CPP_PNGTE=\
"..\..\..\zlib\zconf.h"\
"..\..\..\zlib\zlib.h"\
"..\..\png.h"\
"..\..\pngasmrd.h"\
"..\..\pngconf.h"\
NODEP_CPP_PNGTE=\
@ -667,6 +675,7 @@ DEP_CPP_PNGTE=\
"..\..\..\zlib\zconf.h"\
"..\..\..\zlib\zlib.h"\
"..\..\png.h"\
"..\..\pngasmrd.h"\
"..\..\pngconf.h"\
NODEP_CPP_PNGTE=\
@ -679,6 +688,7 @@ DEP_CPP_PNGTE=\
"..\..\..\zlib\zconf.h"\
"..\..\..\zlib\zlib.h"\
"..\..\png.h"\
"..\..\pngasmrd.h"\
"..\..\pngconf.h"\
NODEP_CPP_PNGTE=\
@ -691,6 +701,7 @@ DEP_CPP_PNGTE=\
"..\..\..\zlib\zconf.h"\
"..\..\..\zlib\zlib.h"\
"..\..\png.h"\
"..\..\pngasmrd.h"\
"..\..\pngconf.h"\
NODEP_CPP_PNGTE=\
@ -703,6 +714,7 @@ DEP_CPP_PNGTE=\
"..\..\..\zlib\zconf.h"\
"..\..\..\zlib\zlib.h"\
"..\..\png.h"\
"..\..\pngasmrd.h"\
"..\..\pngconf.h"\
NODEP_CPP_PNGTE=\
@ -715,6 +727,7 @@ DEP_CPP_PNGTE=\
"..\..\..\zlib\zconf.h"\
"..\..\..\zlib\zlib.h"\
"..\..\png.h"\
"..\..\pngasmrd.h"\
"..\..\pngconf.h"\
NODEP_CPP_PNGTE=\
@ -727,6 +740,7 @@ DEP_CPP_PNGTE=\
"..\..\..\zlib\zconf.h"\
"..\..\..\zlib\zlib.h"\
"..\..\png.h"\
"..\..\pngasmrd.h"\
"..\..\pngconf.h"\
NODEP_CPP_PNGTE=\
@ -739,6 +753,7 @@ DEP_CPP_PNGTE=\
"..\..\..\zlib\zconf.h"\
"..\..\..\zlib\zlib.h"\
"..\..\png.h"\
"..\..\pngasmrd.h"\
"..\..\pngconf.h"\
NODEP_CPP_PNGTE=\
@ -751,6 +766,7 @@ DEP_CPP_PNGTE=\
"..\..\..\zlib\zconf.h"\
"..\..\..\zlib\zlib.h"\
"..\..\png.h"\
"..\..\pngasmrd.h"\
"..\..\pngconf.h"\
NODEP_CPP_PNGTE=\

84
scripts/makefile.aix
View File

@ -1,84 +0,0 @@
# makefile for libpng using gcc (generic, static library)
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
# Copyright (C) 2000 Cosmin Truta
# Copyright (C) 2000 Marc O. Gloor (AIX support added, from makefile.gcc)
# For conditions of distribution and use, see copyright notice in png.h
# Location of the zlib library and include files
ZLIBINC = ../zlib
ZLIBLIB = ../zlib
# Compiler, linker, lib and other tools
CC = gcc
LD = $(CC)
AR = ar rcs
RANLIB = ranlib
RM = rm -f
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it.
PNGMAJ = 2
PNGMIN = 1.0.9beta10
PNGVER = $(PNGMAJ).$(PNGMIN)
prefix=/usr/local
INCPATH=$(prefix)/include
LIBPATH=$(prefix)/lib
CDEBUG = -g -DPNG_DEBUG=5
LDDEBUG =
CRELEASE = -O2
LDRELEASE = -s
CFLAGS = -I$(ZLIBINC) -Wall $(CRELEASE)
LDFLAGS = -L. -L$(ZLIBLIB) -lpng -lz -lm $(LDRELEASE)
# File extensions
O=.o
A=.a
E=
# Variables
OBJS = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \
pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O) \
pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O)
# Targets
all: libpng$(A) pngtest$(E)
libpng$(A): $(OBJS)
$(AR) $@ $(OBJS)
$(RANLIB) $@
test: pngtest$(E)
./pngtest$(E)
pngtest$(E): pngtest$(O) libpng$(A)
$(LD) -o $@ pngtest$(O) $(LDFLAGS)
install: libpng.a
-@if [ ! -d $(INCPATH) ]; then mkdir $(INCPATH); fi
-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
cp png.h pngconf.h $(INCPATH)
chmod 644 $(INCPATH)/png.h $(INCPATH)/pngconf.h
cp libpng.a $(LIBPATH)
clean:
/bin/rm -f *.o libpng.a libpng.so* pngtest pngout.png
png$(O): png.h pngconf.h
pngerror$(O): png.h pngconf.h
pngget$(O): png.h pngconf.h
pngmem$(O): png.h pngconf.h
pngpread$(O): png.h pngconf.h
pngread$(O): png.h pngconf.h
pngrio$(O): png.h pngconf.h
pngrtran$(O): png.h pngconf.h
pngrutil$(O): png.h pngconf.h
pngset$(O): png.h pngconf.h
pngtest$(O): png.h pngconf.h
pngtrans$(O): png.h pngconf.h
pngwio$(O): png.h pngconf.h
pngwrite$(O): png.h pngconf.h
pngwtran$(O): png.h pngconf.h
pngwutil$(O): png.h pngconf.h

2
scripts/makefile.bd32
View File

@ -21,7 +21,7 @@ PNGLIB=png32bd.lib
CC=bcc32
CFLAGS= -ps -O2 -N- -k- -d -r- -w-par -w-aus -I$(ZLIBDIR) \
-DPNG_NO_GLOBAL_ARRAYS #-DPNG_DEBUG=5
-DPNG_NO_GLOBAL_ARRAYS #-DPNG_DEBUG=5
#LINK=tlink32
#LINK=ilink32
LINK=bcc32

2
scripts/makefile.beos
View File

@ -31,7 +31,7 @@ RANLIB=ranlib
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it.
PNGMAJ = 2
PNGMIN = 1.0.9beta10
PNGMIN = 1.0.9beta2
PNGVER = $(PNGMAJ).$(PNGMIN)
# where make install puts libpng.a, libpng.so*, and png.h

17
scripts/makefile.cygwin
View File

@ -13,7 +13,7 @@
CC=gcc
# where "make install" puts libpng.a, libpng.so*, png.h, and pngconf.h
# where "make install" puts libpng.a, libpng.so*, png.h and pngconf.h
prefix=/usr
# Where the zlib library and include files are located
@ -33,13 +33,12 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
#CFLAGS=-DPNG_USE_PNGGCCRD -I$(ZLIBINC) -Wall -O3 $(ALIGN) -funroll-loops \
# -fomit-frame-pointer # $(WARNMORE) -g -DPNG_DEBUG=5
CFLAGS=-I$(ZLIBINC) -Wall -O3 $(ALIGN) -funroll-loops \
-fomit-frame-pointer
-fomit-frame-pointer
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it.
PNGMAJ = 2
PNGMIN = 1.0.9beta10
PNGMIN_BASE = 1.0.9
PNGMIN = 1.0.9beta2
PNGVER = $(PNGMAJ).$(PNGMIN)
SHAREDLIB=cygpng$(PNGMAJ).dll
@ -61,7 +60,7 @@ LIBPATH=$(prefix)/lib
BINPATH=$(prefix)/bin
MANPATH=$(prefix)/man
MAN3PATH=$(MANPATH)/man3
DOCPATH=$(prefix)/doc/libpng-$(PNGMIN_BASE)
DOCPATH=$(prefix)/doc/libpng-$(PNGMIN)
OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
@ -87,14 +86,14 @@ all-static: $(STATLIB) pngtest-stat$(EXE)
all-shared: $(SHAREDLIB) pngtest$(EXE)
pnggccrd.o: png.h pngconf.h
pnggccrd.o: png.h pngconf.h pngasmrd.h
@echo ""
@echo ' You can ignore the single "control reaches end of non-void function"'
@echo ' warning and multiple "<variable> defined but not used" warnings:'
@echo ""
$(CC) -c $(CFLAGS) -DPNG_STATIC -DZLIB_STATIC -o $@ $*.c
pnggccrd.pic.o: png.h pngconf.h
pnggccrd.pic.o: png.h pngconf.h pngasmrd.h
@echo ""
@echo ' You can ignore the single "control reaches end of non-void function"'
@echo ' warning and multiple "<variable> defined but not used" warnings:'
@ -165,7 +164,7 @@ writelock:
# DO NOT DELETE THIS LINE -- make depend depends on it.
png.o png.pic.o: png.h pngconf.h png.c
png.o png.pic.o: png.h pngconf.h png.c pngasmrd.h
pngerror.o pngerror.pic.o: png.h pngconf.h pngerror.c
pngrio.o pngrio.pic.o: png.h pngconf.h pngrio.c
pngwio.o pngwio.pic.o: png.h pngconf.h pngwio.c
@ -174,7 +173,7 @@ pngset.o pngset.pic.o: png.h pngconf.h pngset.c
pngget.o pngget.pic.o: png.h pngconf.h pngget.c
pngread.o pngread.pic.o: png.h pngconf.h pngread.c
pngrtran.o pngrtran.pic.o: png.h pngconf.h pngrtran.c
pngrutil.o pngrutil.pic.o: png.h pngconf.h pngrutil.c
pngrutil.o pngrutil.pic.o: png.h pngconf.h pngrutil.c pngasmrd.h
pngtrans.o pngtrans.pic.o: png.h pngconf.h pngtrans.c
pngwrite.o pngwrite.pic.o: png.h pngconf.h pngwrite.c
pngwtran.o pngwtran.pic.o: png.h pngconf.h pngwtran.c

2
scripts/makefile.dec
View File

@ -17,7 +17,7 @@ ZLIBINC=../zlib
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it.
PNGMAJ = 2
PNGMIN = 1.0.9beta10
PNGMIN = 1.0.9beta2
PNGVER = $(PNGMAJ).$(PNGMIN)
CC=cc

32
scripts/makefile.gcmmx
View File

@ -1,17 +1,13 @@
# makefile for libpng on Linux ELF with gcc using MMX assembler code
# Copyright 1996-1997 Andreas Dilger
# Copyright 1998-2001 Greg Roelofs
# Copyright 1998-2000 Greg Roelofs
# For conditions of distribution and use, see copyright notice in png.h
# CAUTION: Do not use this makefile with gcc versions 2.7.2.2 and earlier.
# NOTE: When testing MMX performance on a multitasking system, make sure
# there are no floating-point programs (e.g., SETI@Home) running in
# the background! Context switches between MMX and FPU are expensive.
CC=gcc
# where "make install" puts libpng.a, libpng.so*, png.h, and pngconf.h
# where "make install" puts libpng.a, libpng.so*, png.h and pngconf.h
prefix=/usr/local
# Where the zlib library and include files are located
@ -30,18 +26,8 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
# for pgcc version 2.95.1, -O3 is buggy; don't use it.
### for generic gcc:
CFLAGS=-DPNG_USE_PNGGCCRD -I$(ZLIBINC) -Wall -O3 $(ALIGN) -funroll-loops \
-fomit-frame-pointer # $(WARNMORE) -g -DPNG_DEBUG=5
### for gcc 2.95.2 on 686:
#CFLAGS=-DPNG_USE_PNGGCCRD -I$(ZLIBINC) -Wall -O3 \
# -mcpu=i686 -malign-double -ffast-math -fstrict-aliasing \
# $(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer
### for gcc 2.7.2.3 on 486 and up:
#CFLAGS=-DPNG_USE_PNGGCCRD -I$(ZLIBINC) -Wall -O3 \
# -m486 -malign-double -ffast-math \
# $(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer
-fomit-frame-pointer # $(WARNMORE) -g -DPNG_DEBUG=5
LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng -lz -lm
LDFLAGS_A=-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) libpng.a -lz -lm
@ -51,7 +37,7 @@ RANLIB=ranlib
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it.
PNGMAJ = 2
PNGMIN = 1.0.9beta10
PNGMIN = 1.0.9beta2
PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include
@ -70,21 +56,19 @@ OBJSDLL = $(OBJS:.o=.pic.o)
all: libpng.a libpng.so pngtest pngtest-static
pnggccrd.o: pnggccrd.c png.h pngconf.h
pnggccrd.o: pnggccrd.c png.h pngconf.h pngasmrd.h
@echo ""
@echo ' You can ignore the single "control reaches end of non-void function"'
@echo ' warning and multiple "<variable> defined but not used" warnings:'
@echo ""
$(CC) -c $(CFLAGS) -o $@ $*.c
@echo ""
pnggccrd.pic.o: pnggccrd.c png.h pngconf.h
pnggccrd.pic.o: pnggccrd.c png.h pngconf.h pngasmrd.h
@echo ""
@echo ' You can ignore the single "control reaches end of non-void function"'
@echo ' warning and multiple "<variable> defined but not used" warnings:'
@echo ""
$(CC) -c $(CFLAGS) -fPIC -o $@ pnggccrd.c
@echo ""
libpng.a: $(OBJS)
ar rc $@ $(OBJS)
@ -134,7 +118,7 @@ DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
chmod a-w *.[ch35] $(DOCS) scripts/*
png.o png.pic.o: png.h pngconf.h png.c
png.o png.pic.o: png.h pngconf.h png.c pngasmrd.h
pngerror.o pngerror.pic.o: png.h pngconf.h pngerror.c
pngrio.o pngrio.pic.o: png.h pngconf.h pngrio.c
pngwio.o pngwio.pic.o: png.h pngconf.h pngwio.c
@ -143,7 +127,7 @@ pngset.o pngset.pic.o: png.h pngconf.h pngset.c
pngget.o pngget.pic.o: png.h pngconf.h pngget.c
pngread.o pngread.pic.o: png.h pngconf.h pngread.c
pngrtran.o pngrtran.pic.o: png.h pngconf.h pngrtran.c
pngrutil.o pngrutil.pic.o: png.h pngconf.h pngrutil.c
pngrutil.o pngrutil.pic.o: png.h pngconf.h pngrutil.c pngasmrd.h
pngtrans.o pngtrans.pic.o: png.h pngconf.h pngtrans.c
pngwrite.o pngwrite.pic.o: png.h pngconf.h pngwrite.c
pngwtran.o pngwtran.pic.o: png.h pngconf.h pngwtran.c

2
scripts/makefile.hpux
View File

@ -18,7 +18,7 @@ RANLIB=ranlib
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it.
PNGMAJ = 2
PNGMIN = 1.0.9beta10
PNGMIN = 1.0.9beta2
PNGVER = $(PNGMAJ).$(PNGMIN)
# where make install puts libpng.a and png.h

8
scripts/makefile.intel
View File

@ -42,9 +42,9 @@ LDFLAGS=/SUBSYSTEM:CONSOLE /NOLOGO
O=.obj
OBJS=png$(O) pngset$(O) pngget$(O) pngrutil$(O) pngtrans$(O) pngwutil$(O) \
pngmem$(O) pngpread$(O) pngread$(O) pngerror$(O) pngwrite$(O) \
pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O) pngvcrd$(O)
OBJS=png$(O) pngset$(O) pngget$(O) pngrutil$(O) pngtrans$(O) pngwutil$(O)\
pngmem$(O) pngpread$(O) pngread$(O) pngerror$(O) pngwrite$(O)\
pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O) pngvcrd$(O)
all: test
@ -70,7 +70,7 @@ pngrtran$(O): png.h pngconf.h
pngrutil$(O): png.h pngconf.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
pngvcrd$(O): png.h pngconf.h
pngvcrd$(O): png.h pngconf.h pngasmrd.h
$(CC) $(CFLAGS) $*.c $(ERRFILE)
pngerror$(O): png.h pngconf.h

2
scripts/makefile.linux
View File

@ -34,7 +34,7 @@ RANLIB=ranlib
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it.
PNGMAJ = 2
PNGMIN = 1.0.9beta10
PNGMIN = 1.0.9beta2
PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include

72
scripts/makefile.macosx
View File

@ -1,72 +0,0 @@
# makefile for libpng, MACOS X
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
# For conditions of distribution and use, see copyright notice in png.h
# where make install puts libpng.a and png.h
prefix=/usr/local
# Where the zlib library and include files are located
#ZLIBLIB=/usr/local/lib
#ZLIBINC=/usr/local/include
ZLIBLIB=../zlib
ZLIBINC=../zlib
CC=cc
CFLAGS=-I$(ZLIBINC) -O # -g -DPNG_DEBUG=5
LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz
#RANLIB=echo
RANLIB=ranlib
OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
pngwtran.o pngmem.o pngerror.o pngpread.o
all: libpng.a pngtest
libpng.a: $(OBJS)
ar rc $@ $(OBJS)
$(RANLIB) $@
pngtest: pngtest.o libpng.a
$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
test: pngtest
./pngtest
install: libpng.a
-@mkdir $(prefix)/include
-@mkdir $(prefix)/lib
cp png.h $(prefix)/include
cp pngconf.h $(prefix)/include
chmod 644 $(prefix)/include/png.h
chmod 644 $(prefix)/include/pngconf.h
cp libpng.a $(prefix)/lib
chmod 644 $(prefix)/lib/libpng.a
clean:
rm -f *.o libpng.a pngtest pngout.png
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
chmod a-w *.[ch35] $(DOCS) scripts/*
# DO NOT DELETE THIS LINE -- make depend depends on it.
png.o: png.h pngconf.h
pngerror.o: png.h pngconf.h
pngrio.o: png.h pngconf.h
pngwio.o: png.h pngconf.h
pngmem.o: png.h pngconf.h
pngset.o: png.h pngconf.h
pngget.o: png.h pngconf.h
pngread.o: png.h pngconf.h
pngrtran.o: png.h pngconf.h
pngrutil.o: png.h pngconf.h
pngtest.o: png.h pngconf.h
pngtrans.o: png.h pngconf.h
pngwrite.o: png.h pngconf.h
pngwtran.o: png.h pngconf.h
pngwutil.o: png.h pngconf.h
pngpread.o: png.h pngconf.h

2
scripts/makefile.sco
View File

@ -25,7 +25,7 @@ RANLIB=echo
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it.
PNGMAJ = 2
PNGMIN = 1.0.9beta10
PNGMIN = 1.0.9beta2
PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include

8
scripts/makefile.sggcc
View File

@ -13,14 +13,14 @@ ZLIBINC=/usr/local/include
CC=gcc
WARNMORE= # -g -DPNG_DEBUG=5
CFLAGS=-I$(ZLIBINC) -O2 $(WARNMORE) -fPIC -mabi=n32
WARNMORE=
CFLAGS=-I$(ZLIBINC) -O2 $(WARNMORE) -fPIC -mabi=n32 # -g -DPNG_DEBUG=5
# zlib must also be compiled with n32
LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
LDSHARED=gcc -shared
VER=1.0.9beta10
LIBS=libpng.so.1.0.9beta10
VER=1.0.9beta2
LIBS=libpng.so.1.0.9beta2
SHAREDLIB=libpng.so
libdir=$(prefix)/lib32

2
scripts/makefile.solaris
View File

@ -31,7 +31,7 @@ RANLIB=echo
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it.
PNGMAJ = 2
PNGMIN = 1.0.9beta10
PNGMIN = 1.0.9beta2
PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include

4
scripts/makefile.vcawin32
View File

@ -46,10 +46,10 @@ pngpread$(O): png.h pngconf.h
pngrtran$(O): png.h pngconf.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
pngrutil$(O): png.h pngconf.h
pngrutil$(O): png.h pngconf.h pngasmrd.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
pngvcrd$(O): png.h pngconf.h
pngvcrd$(O): png.h pngconf.h pngasmrd.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
pngerror$(O): png.h pngconf.h

2
scripts/makefile.vcwin32
View File

@ -42,7 +42,7 @@ pngpread$(O): png.h pngconf.h
pngrtran$(O): png.h pngconf.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
pngrutil$(O): png.h pngconf.h
pngrutil$(O): png.h pngconf.h pngasmrd.h
$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
pngerror$(O): png.h pngconf.h

2
scripts/pngdef.pas
View File

@ -5,7 +5,7 @@ unit pngdef;
interface
const
PNG_LIBPNG_VER_STRING = '1.0.9beta10';
PNG_LIBPNG_VER_STRING = '1.0.9beta2';
PNG_LIBPNG_VER = 10009;
type

3
scripts/pngos2.def
View File

@ -325,6 +325,3 @@ EXPORTS
png_tIME
png_tRNS
png_zTXt
png_mmx_supported
png_permit_empty_plte