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libpng
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Imported from libpng-1.2.0beta1.tar

This commit is contained in:
Glenn Randers-Pehrson 2001-05-06 05:34:26 -05:00
parent e68f5a361b
commit 1fd5fb33c2
56 changed files with 1093 additions and 826 deletions
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12
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.0.12beta1 - May 14, 2001
Libpng 1.2.0beta1 - May 6, 2001
This is a public release of libpng, intended for use in production codes.
@ -9,12 +9,10 @@ Changes since the last public release (1.0.11):
Updated makefile.cygwin and handling of Cygwin's ALL_STATIC in pngconf.h
Added some never-to-be-executed code in pnggccrd.c to quiet compiler warnings.
Bumped DLLNUM to 2.
Added a check for attempts to read or write PLTE in grayscale PNG datastreams.
Eliminated the png_error about apps using png_read|write_init(). Instead,
libpng will reallocate the png_struct and info_struct if they are too small.
This achieves future binary compatibility for old applications written for
libpng-0.88 and earlier.
Modified png_create_struct so it passes user mem_ptr to user memory allocator.
Enabled PNG_MNG_FEATURES_SUPPORTED and enabled PNG_ASSEMBLER_CODE_SUPPORTED
by default.
Added runtime selection of MMX features.
Added png_set_strip_error_numbers function and related macros.
Send comments/corrections/commendations to
png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu

13
CHANGES
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@ -1,3 +1,4 @@
CHANGES - changes for libpng
version 0.2
@ -930,17 +931,15 @@ version 1.0.11beta4 [April 20, 2001]
Added makefile.netbsd
version 1.0.11 [April 27, 2001]
Revised makefile.netbsd
version 1.0.12beta1 [May 14, 2001]
version 1.2.0beta1 [May 6, 2001]
Test for Windows platform in pngconf.h when including malloc.h (Emmanuel Blot)
Updated makefile.cygwin and handling of Cygwin's ALL_STATIC in pngconf.h
Added some never-to-be-executed code in pnggccrd.c to quiet compiler warnings.
Bumped DLLNUM to 2.
Added a check for attempts to read or write PLTE in grayscale PNG datastreams.
Eliminated the png_error about apps using png_read|write_init(). Instead,
libpng will reallocate the png_struct and info_struct if they are too small.
This achieves future binary compatibility for old applications written for
libpng-0.88 and earlier.
Modified png_create_struct so it passes user mem_ptr to user memory allocator.
Re-enabled PNG_MNG_FEATURES_SUPPORTED and enabled PNG_ASSEMBLER_CODE_SUPPORTED
by default.
Added runtime selection of MMX features.
Added png_set_strip_error_numbers function and related macros.
Send comments/corrections/commendations to
png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu

15
INSTALL
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@ -1,5 +1,5 @@
Installing libpng version 1.0.12beta1 - May 14, 2001
Installing libpng version 1.2.0beta1 - May 6, 2001
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-1.0.12beta1" or "lpng109" and "zlib-1.1.3"
might be called "libpng-1.2.0beta1" 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:
@ -28,7 +28,6 @@ Your directory structure should look like this:
pngsuite
visupng
projects
beos
borland
msvc
wince
@ -60,8 +59,8 @@ 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.2.1.0.12beta1)
makefile.gcmmx => Linux/ELF makefile (gcc, creates libpng.so.2.1.0.12beta1,
makefile.linux => Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0beta1)
makefile.gcmmx => Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0beta1,
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
@ -70,17 +69,15 @@ include
makefile.aix => AIX makefile
makefile.cygwin => Cygwin/gcc makefile
makefile.dec => DEC Alpha UNIX makefile
makefile.hpgcc => HPUX makefile using gcc
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.netbsd => NetBSD/cc makefile, uses PNGGCCRD
makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.0.12beta1)
makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.2.0beta1)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile (gcc, creates libpng.so.2.1.0.12beta1)
makefile.solaris => Solaris 2.X makefile (gcc, creates libpng.so.2.1.2.0beta1)
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
makefile.mips => MIPS makefile
makefile.acorn => Acorn makefile

3
KNOWNBUG
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@ -1,7 +1,8 @@
Known bugs in libpng-1.0.11
Known bugs in libpng-1.2.0
1. April 22, 2001: pnggccrd.c has been reported to crash on NetBSD when
reading interlaced PNG files, when assembler code is enabled.
STATUS: Under investigation.

14
LICENSE
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@ -8,8 +8,8 @@ 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 1.0.12beta1, May 14, 2001, are
Copyright (c) 2000, 2001 Glenn Randers-Pehrson
libpng versions 1.0.7, July 1, 2000, through 1.2.0beta1, May 6, 2001, 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
@ -73,11 +73,11 @@ to the following restrictions:
1. The origin of this source code must not be misrepresented.
2. Altered versions must be plainly marked as such and
must not be misrepresented as being the original source.
2. Altered versions must be plainly marked as such and must not
be misrepresented as being the original source.
3. This Copyright notice may not be removed or altered from
any source or altered source distribution.
3. This Copyright notice may not be removed or altered from any
source or altered source distribution.
The Contributing Authors and Group 42, Inc. specifically permit, without
fee, and encourage the use of this source code as a component to
@ -99,4 +99,4 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
randeg@alum.rpi.edu
May 14, 2001
May 6, 2001

13
README
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@ -1,4 +1,4 @@
README for libpng 1.0.12beta1 - May 14, 2001 (shared library 2.1)
README for libpng 1.2.0beta1 - May 6, 2001 (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.
@ -172,7 +172,6 @@ Files in this distribution:
pngsuite => Test images
visupng => Contains a MSVC workspace for VisualPng
projects => Contains project files and workspaces for building DLL
beos => Contains a Beos workspace for building libpng
borland => Contains a Borland workspace for building libpng
and zlib
msvc => Contains a Microsoft Visual C++ (MSVC) workspace
@ -183,9 +182,9 @@ 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.2.1.0.12beta1)
(gcc, creates libpng.so.2.1.2.0beta1)
makefile.gcmmx => Linux/ELF makefile (gcc, creates
libpng.so.2.1.0.12beta1, uses assembler code
libpng.so.2.1.2.0beta1, 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
@ -194,18 +193,16 @@ Files in this distribution:
makefile.aix => AIX makefile
makefile.cygwin => Cygwin/gcc makefile
makefile.dec => DEC Alpha UNIX makefile
makefile.hpgcc => HPUX makefile using gcc
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.netbsd => NetBSD/cc makefile, uses PNGGCCRD
makefile.sgi => Silicon Graphics IRIX (cc, creates static lib)
makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.0.12beta1)
makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.2.0beta1)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile
(gcc, creates libpng.so.2.1.0.12beta1)
(gcc, creates libpng.so.2.1.2.0beta1)
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
makefile.mips => MIPS makefile
makefile.acorn => Acorn makefile

4
Y2KINFO
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@ -1,13 +1,13 @@
Y2K compliance in libpng:
=========================
May 14, 2001
May 6, 2001
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 1.0.12beta1 are Y2K compliant. It is my belief that earlier
upward through 1.2.0beta1 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-1.0.12beta1. Instead, please
There is no \"configure\" script for Libpng-1.2.0beta1. Instead, please
copy the appropriate makefile for your system from the \"scripts\"
directory. Read the INSTALL file for more details.
"

161
contrib/gregbook/readpng2.c
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@ -49,8 +49,77 @@ static void readpng2_error_handler(png_structp png_ptr, png_const_charp msg);
void readpng2_version_info(void)
{
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED) && \
(defined(__i386__) || defined(_M_IX86)) && \
defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
/*
* WARNING: This preprocessor approach means that the following code
* cannot be used with a libpng DLL older than 1.2.0--the
* compiled-in symbols for the new functions will not exist.
* (Could use dlopen() and dlsym() on Unix and corresponding
* calls for Windows, but not portable...)
*/
{
int mmxsupport = png_mmx_support();
if (mmxsupport < 0)
fprintf(stderr, " Compiled with libpng %s; using libpng %s "
"without MMX support.\n", PNG_LIBPNG_VER_STRING, png_libpng_ver);
else {
int compilerID;
png_uint_32 mmx_mask = png_get_mmx_flagmask(
PNG_SELECT_READ | PNG_SELECT_WRITE, &compilerID);
fprintf(stderr, " Compiled with libpng %s; using libpng %s "
"with MMX support\n (%s version).", PNG_LIBPNG_VER_STRING,
png_libpng_ver, compilerID == 1? "MSVC++" :
(compilerID == 2? "GNU C" : "unknown"));
fprintf(stderr, " Processor %s MMX instructions.\n",
mmxsupport? "supports" : "does not support");
if (mmxsupport > 0) {
int num_optims = 0;
fprintf(stderr,
" Potential MMX optimizations supported by libpng:\n");
if (mmx_mask & PNG_ASM_FLAG_MMX_READ_FILTER_SUB)
++num_optims;
if (mmx_mask & PNG_ASM_FLAG_MMX_READ_FILTER_UP)
++num_optims;
if (mmx_mask & PNG_ASM_FLAG_MMX_READ_FILTER_AVG)
++num_optims;
if (mmx_mask & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH)
++num_optims;
if (num_optims)
fprintf(stderr,
" decoding %s row filters (reading)\n",
(num_optims == 4)? "all non-trivial" : "some");
if (mmx_mask & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW) {
fprintf(stderr, " combining rows (reading)\n");
++num_optims;
}
if (mmx_mask & PNG_ASM_FLAG_MMX_READ_INTERLACE) {
fprintf(stderr,
" expanding interlacing (reading)\n");
++num_optims;
}
mmx_mask &= ~( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \
| PNG_ASM_FLAG_MMX_READ_INTERLACE \
| PNG_ASM_FLAG_MMX_READ_FILTER_SUB \
| PNG_ASM_FLAG_MMX_READ_FILTER_UP \
| PNG_ASM_FLAG_MMX_READ_FILTER_AVG \
| PNG_ASM_FLAG_MMX_READ_FILTER_PAETH );
if (mmx_mask) {
fprintf(stderr, " other (unknown)\n");
++num_optims;
}
if (num_optims == 0)
fprintf(stderr, " (none)\n");
}
}
}
#else
fprintf(stderr, " Compiled with libpng %s; using libpng %s.\n",
PNG_LIBPNG_VER_STRING, png_libpng_ver);
#endif
fprintf(stderr, " Compiled with zlib %s; using zlib %s.\n",
ZLIB_VERSION, zlib_version);
@ -111,6 +180,97 @@ 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);
/*
* may as well enable or disable MMX routines here, if supported;
*
* to enable all: mask = png_get_mmx_flagmask (
* PNG_SELECT_READ | PNG_SELECT_WRITE, &compilerID);
* flags = png_get_asm_flags (png_ptr);
* flags |= mask;
* png_set_asm_flags (png_ptr, flags);
*
* to disable all: mask = png_get_mmx_flagmask (
* PNG_SELECT_READ | PNG_SELECT_WRITE, &compilerID);
* flags = png_get_asm_flags (png_ptr);
* flags &= ~mask;
* png_set_asm_flags (png_ptr, flags);
*/
#if (defined(__i386__) || defined(_M_IX86)) && \
defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
/*
* WARNING: This preprocessor approach means that the following code
* cannot be used with a libpng DLL older than 1.2.0--the
* compiled-in symbols for the new functions will not exist.
* (Could use dlopen() and dlsym() on Unix and corresponding
* calls for Windows, but not portable...)
*/
{
#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
png_uint_32 mmx_disable_mask = 0;
png_uint_32 asm_flags, mmx_mask;
int compilerID;
if (mainprog_ptr->nommxfilters)
mmx_disable_mask |= ( PNG_ASM_FLAG_MMX_READ_FILTER_SUB \
| PNG_ASM_FLAG_MMX_READ_FILTER_UP \
| PNG_ASM_FLAG_MMX_READ_FILTER_AVG \
| PNG_ASM_FLAG_MMX_READ_FILTER_PAETH );
if (mainprog_ptr->nommxcombine)
mmx_disable_mask |= PNG_ASM_FLAG_MMX_READ_COMBINE_ROW;
if (mainprog_ptr->nommxinterlace)
mmx_disable_mask |= PNG_ASM_FLAG_MMX_READ_INTERLACE;
asm_flags = png_get_asm_flags(png_ptr);
png_set_asm_flags(png_ptr, asm_flags & ~mmx_disable_mask);
/* Now query libpng's asm settings, just for yuks. Note that this
* differs from the querying of its *potential* MMX capabilities
* in readpng2_version_info(); this is true runtime verification. */
asm_flags = png_get_asm_flags(png_ptr);
mmx_mask = png_get_mmx_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE,
&compilerID);
if (asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_COMPILED)
fprintf(stderr,
" MMX support (%s version) is compiled into libpng\n",
compilerID == 1? "MSVC++" :
(compilerID == 2? "GNU C" : "unknown"));
else
fprintf(stderr, " MMX support is not compiled into libpng\n");
fprintf(stderr, " MMX instructions are %ssupported by CPU\n",
(asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU)? "" : "not ");
fprintf(stderr, " MMX read support for combining rows is %sabled\n",
(asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)? "en" : "dis");
fprintf(stderr,
" MMX read support for expanding interlacing is %sabled\n",
(asm_flags & PNG_ASM_FLAG_MMX_READ_INTERLACE)? "en" : "dis");
fprintf(stderr, " MMX read support for \"sub\" filter is %sabled\n",
(asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_SUB)? "en" : "dis");
fprintf(stderr, " MMX read support for \"up\" filter is %sabled\n",
(asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_UP)? "en" : "dis");
fprintf(stderr, " MMX read support for \"avg\" filter is %sabled\n",
(asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_AVG)? "en" : "dis");
fprintf(stderr, " MMX read support for \"Paeth\" filter is %sabled\n",
(asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH)? "en" : "dis");
asm_flags &= (mmx_mask & ~( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \
| PNG_ASM_FLAG_MMX_READ_INTERLACE \
| PNG_ASM_FLAG_MMX_READ_FILTER_SUB \
| PNG_ASM_FLAG_MMX_READ_FILTER_UP \
| PNG_ASM_FLAG_MMX_READ_FILTER_AVG \
| PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ));
if (asm_flags)
fprintf(stderr,
" additional MMX support is also enabled (0x%02lx)\n",
asm_flags);
#else /* !PNG_ASSEMBLER_CODE_SUPPORTED */
fprintf(stderr, " MMX querying is disabled in libpng.\n");
#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
}
#endif
/* make sure we save our pointers for use in readpng2_decode_data() */
mainprog_ptr->png_ptr = png_ptr;
@ -370,6 +530,7 @@ static void readpng2_end_callback(png_structp png_ptr, png_infop info_ptr)
(*mainprog_ptr->mainprog_finish_display)();
info_ptr = info_ptr; /* without this the compiler whines about info_ptr */
/* all done */

4
contrib/visupng/PngFile.c
View File

@ -370,14 +370,14 @@ BOOL PngSaveImage (PTSTR pstrFileName, png_byte *pDiData,
// clean up after the write, and free any memory allocated
png_destroy_write_struct(&png_ptr, &info_ptr);
png_destroy_write_struct(&png_ptr, (png_infopp) NULL);
// yepp, done
}
Catch (msg)
{
png_destroy_write_struct(&png_ptr, &info_ptr);
png_destroy_write_struct(&png_ptr, (png_infopp) NULL);
if(ppbRowPointers)
free (ppbRowPointers);

8
example.c
View File

@ -338,8 +338,7 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */
for (row = 0; row < height; row++)
{
row_pointers[row] = png_malloc(png_ptr, png_get_rowbytes(png_ptr,
info_ptr));
row_pointers[row] = malloc(png_get_rowbytes(png_ptr, info_ptr));
}
/* Now it's time to read the image. One of these methods is REQUIRED */
@ -495,7 +494,7 @@ row_callback(png_structp png_ptr, png_bytep new_row,
* png_progressive_combine_row() passing in the row and the
* old row. You can call this function for NULL rows (it will
* just return) and for non-interlaced images (it just does the
* png_memcpy for you) if it will make the code easier. Thus, you
* memcpy for you) if it will make the code easier. Thus, you
* can just do this for all cases:
*/
@ -604,8 +603,7 @@ 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, PNG_MAX_PALETTE_LENGTH * sizeof (png_color));
/* ... set palette colors ... */
png_set_PLTE(png_ptr, info_ptr, palette, PNG_MAX_PALETTE_LENGTH);
/* You must not free palette here, because png_set_PLTE only makes a link to

160
libpng.3
View File

@ -1,6 +1,6 @@
.TH LIBPNG 3 "May 14, 2001"
.TH LIBPNG 3 "May 6, 2001"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.0.12beta1
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.0beta1
.SH SYNOPSIS
\fI\fB
@ -100,6 +100,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.12beta1
\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
@ -192,6 +196,18 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.12beta1
\fI\fB
\fBpng_byte png_get_mmx_bitdepth_threshold (png_structp \fIpng_ptr\fP\fB);\fP
\fI\fB
\fBpng_uint_32 png_get_mmx_flagmask (int \fP\fIflag_select\fP\fB, int \fI*compilerID\fP\fB);\fP
\fI\fB
\fBpng_uint_32 png_get_mmx_rowbytes_threshold (png_structp \fIpng_ptr\fP\fB);\fP
\fI\fB
\fBpng_uint_32 png_get_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*offset_x\fP\fB, png_uint_32 \fP\fI*offset_y\fP\fB, int \fI*unit_type\fP\fB);\fP
\fI\fB
@ -334,6 +350,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.12beta1
\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
@ -384,6 +404,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.12beta1
\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
@ -512,6 +536,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.12beta1
\fI\fB
\fBpng_set_mmx_thresholds (png_structp \fP\fIpng_ptr\fP\fB, png_byte \fP\fImmx_bitdepth_threshold\fP\fB, png_uint_32 \fImmx_rowbytes_threshold\fP\fB);\fP
\fI\fB
\fBvoid png_set_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIoffset_x\fP\fB, png_uint_32 \fP\fIoffset_y\fP\fB, int \fIunit_type\fP\fB);\fP
\fI\fB
@ -604,6 +632,12 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.12beta1
\fI\fB
\fBvoid png_set_strip_error_numbers (png_structp \fIpng_ptr,
\fBpng_uint_32 \fIstrip_mode\fP\fB);\fP
\fI\fB
\fBvoid png_set_swap (png_structp \fIpng_ptr\fP\fB);\fP
\fI\fB
@ -747,7 +781,7 @@ 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 1.0.12beta1 - May 14, 2001
libpng version 1.2.0beta1 - May 6, 2001
Updated and distributed by Glenn Randers-Pehrson
<randeg@alum.rpi.edu>
Copyright (c) 1998-2001 Glenn Randers-Pehrson
@ -2143,7 +2177,6 @@ png_infop info_ptr;
/* This function is called when each row of image
data is complete */
void
row_callback(png_structp png_ptr, png_bytep new_row,
png_uint_32 row_num, int pass)
@ -3392,8 +3425,106 @@ 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. Runtime optimization
.SH VI. MNG support
A new feature in libpng 1.2.0 is the ability to dynamically switch between
standard and optimized versions of some routines. Currently these are
limited to three computationally intensive tasks when reading PNG files:
decoding row filters, expanding interlacing, and combining interlaced or
transparent row data with previous row data. Currently the optimized
versions are available only for x86 (Intel, AMD, etc.) platforms with
MMX support, though this may change in future versions. (For example,
the non-MMX assembler optimizations for zlib might become similarly
runtime-selectable in future releases, in which case libpng could be
extended to support them. Alternatively, the compile-time choice of
floating-point versus integer routines for gamma correction might become
runtime-selectable.)
Because such optimizations tend to be very platform- and compiler-dependent,
both in how they are written and in how they perform, the new runtime code
in libpng has been written to allow programs to query, enable, and disable
either specific optimizations or all such optimizations. For example, to
enable all possible optimizations (bearing in mind that some "optimizations"
may actually run more slowly in rare cases):
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
png_uint_32 mask, flags;
flags = png_get_asm_flags(png_ptr);
mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
png_set_asm_flags(png_ptr, flags | mask);
#endif
To enable only optimizations relevant to reading PNGs, use PNG_SELECT_READ
by itself when calling png_get_asm_flagmask(); similarly for optimizing
only writing. To disable all optimizations:
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
flags = png_get_asm_flags(png_ptr);
mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
png_set_asm_flags(png_ptr, flags & ~mask);
#endif
To enable or disable only MMX-related features, use png_get_mmx_flagmask()
in place of png_get_asm_flagmask(). The mmx version takes one additional
parameter:
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
int selection = PNG_SELECT_READ | PNG_SELECT_WRITE;
int compilerID;
mask = png_get_mmx_flagmask(selection, &compilerID);
#endif
On return, compilerID will indicate which version of the MMX assembler
optimizations was compiled. Currently two flavors exist: Microsoft
Visual C++ (compilerID == 1) and GNU C (a.k.a. gcc/gas, compilerID == 2).
On non-x86 platforms or on systems compiled without MMX optimizations, a
value of -1 is used.
Note that both png_get_asm_flagmask() and png_get_mmx_flagmask() return
all valid, settable optimization bits for the version of the library that's
currently in use. In the case of shared (dynamically linked) libraries,
this may include optimizations that did not exist at the time the code was
written and compiled. It is also possible, of course, to enable only known,
specific optimizations; for example:
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
flags = PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \
| PNG_ASM_FLAG_MMX_READ_INTERLACE \
| PNG_ASM_FLAG_MMX_READ_FILTER_SUB \
| PNG_ASM_FLAG_MMX_READ_FILTER_UP \
| PNG_ASM_FLAG_MMX_READ_FILTER_AVG \
| PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
png_set_asm_flags(png_ptr, flags);
#endif
This method would enable only the MMX read-optimizations available at the
time of libpng 1.2.0's release, regardless of whether a later version of
the DLL were actually being used. (Also note that these functions did not
exist in versions older than 1.2.0, so any attempt to run a dynamically
linked app on such an older version would fail.)
To determine whether the processor supports MMX instructions at all, use
the png_mmx_support() function:
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
mmxsupport = png_mmx_support();
#endif
It returns -1 if MMX support is not compiled into libpng, 0 if MMX code
is compiled but MMX is not supported by the processor, or 1 if MMX support
is fully available. Note that png_mmx_support(), png_get_mmx_flagmask(),
and png_get_asm_flagmask() all may be called without allocating and ini-
tializing any PNG structures (for example, as part of a usage screen or
"about" box).
For more extensive examples of runtime querying, enabling and disabling
of optimized features, see contrib/gregbook/readpng2.c in the libpng
source-code distribution.
.SH VII. 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.
@ -3418,7 +3549,7 @@ or any other MNG chunks; your application must provide its own support for
them. You may wish to consider using libmng (available at
http://www.libmng.com) instead.
.SH VII. Changes to Libpng from version 0.88
.SH VIII. Changes to Libpng from version 0.88
It should be noted that versions of libpng later than 0.96 are not
distributed by the original libpng author, Guy Schalnat, nor by
@ -3428,7 +3559,7 @@ of the original PNG Group, Glenn Randers-Pehrson. Guy and Andreas are
still alive and well, but they have moved on to other things.
The old libpng functions png_read_init(), png_write_init(),
png_info_init(), png_read_destroy(), and png_write_destroy() have been
png_info_init(), png_read_destroy(), and png_write_destory() have been
moved to PNG_INTERNAL in version 0.95 to discourage their use. These
functions will be removed from libpng version 2.0.0.
@ -3467,15 +3598,15 @@ application:
png_uint_32 application_vn = PNG_LIBPNG_VER;
.SH VIII. Y2K Compliance in libpng
.SH IX. Y2K Compliance in libpng
May 14, 2001
May 6, 2001
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 1.0.12beta1 are Y2K compliant. It is my belief that earlier
upward through 1.2.0beta1 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
@ -3587,7 +3718,8 @@ the first widely used release:
1.0.11beta1-3 1 10011 2.1.0.11beta1-3
1.0.11rc1 1 10011 2.1.0.11rc1
1.0.11 1 10011 2.1.0.11
1.0.12beta1 1 10012 2.1.0.12beta1
1.1.0a-f 1 10100 2.1.1.0 abandoned
1.2.0beta1 2 10200 2.1.2.0beta1
Henceforth the source version will match the shared-library minor
and patch numbers; the shared-library major version number will be
@ -3645,7 +3777,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.0.12beta1 - May 14, 2001:
Libpng version 1.2.0beta1 - May 6, 2001:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (randeg@alum.rpi.edu).
@ -3662,7 +3794,7 @@ 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 1.0.12beta1, May 14, 2001, are
libpng versions 1.0.7, July 1, 2000, through 1.2.0beta1, May 6, 2001, are
Copyright (c) 2000-2001 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
@ -3754,7 +3886,7 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
randeg@alum.rpi.edu
May 14, 2001
May 6, 2001
.\" end of man page

113
libpng.txt
View File

@ -1,6 +1,6 @@
libpng.txt - A description on how to use and modify libpng
libpng version 1.0.12beta1 - May 14, 2001
libpng version 1.2.0beta1 - May 6, 2001
Updated and distributed by Glenn Randers-Pehrson
<randeg@alum.rpi.edu>
Copyright (c) 1998-2001 Glenn Randers-Pehrson
@ -1396,7 +1396,6 @@ png_infop info_ptr;
/* This function is called when each row of image
data is complete */
void
row_callback(png_structp png_ptr, png_bytep new_row,
png_uint_32 row_num, int pass)
@ -2645,8 +2644,106 @@ 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. Runtime optimization
VI. MNG support
A new feature in libpng 1.2.0 is the ability to dynamically switch between
standard and optimized versions of some routines. Currently these are
limited to three computationally intensive tasks when reading PNG files:
decoding row filters, expanding interlacing, and combining interlaced or
transparent row data with previous row data. Currently the optimized
versions are available only for x86 (Intel, AMD, etc.) platforms with
MMX support, though this may change in future versions. (For example,
the non-MMX assembler optimizations for zlib might become similarly
runtime-selectable in future releases, in which case libpng could be
extended to support them. Alternatively, the compile-time choice of
floating-point versus integer routines for gamma correction might become
runtime-selectable.)
Because such optimizations tend to be very platform- and compiler-dependent,
both in how they are written and in how they perform, the new runtime code
in libpng has been written to allow programs to query, enable, and disable
either specific optimizations or all such optimizations. For example, to
enable all possible optimizations (bearing in mind that some "optimizations"
may actually run more slowly in rare cases):
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
png_uint_32 mask, flags;
flags = png_get_asm_flags(png_ptr);
mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
png_set_asm_flags(png_ptr, flags | mask);
#endif
To enable only optimizations relevant to reading PNGs, use PNG_SELECT_READ
by itself when calling png_get_asm_flagmask(); similarly for optimizing
only writing. To disable all optimizations:
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
flags = png_get_asm_flags(png_ptr);
mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
png_set_asm_flags(png_ptr, flags & ~mask);
#endif
To enable or disable only MMX-related features, use png_get_mmx_flagmask()
in place of png_get_asm_flagmask(). The mmx version takes one additional
parameter:
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
int selection = PNG_SELECT_READ | PNG_SELECT_WRITE;
int compilerID;
mask = png_get_mmx_flagmask(selection, &compilerID);
#endif
On return, compilerID will indicate which version of the MMX assembler
optimizations was compiled. Currently two flavors exist: Microsoft
Visual C++ (compilerID == 1) and GNU C (a.k.a. gcc/gas, compilerID == 2).
On non-x86 platforms or on systems compiled without MMX optimizations, a
value of -1 is used.
Note that both png_get_asm_flagmask() and png_get_mmx_flagmask() return
all valid, settable optimization bits for the version of the library that's
currently in use. In the case of shared (dynamically linked) libraries,
this may include optimizations that did not exist at the time the code was
written and compiled. It is also possible, of course, to enable only known,
specific optimizations; for example:
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
flags = PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \
| PNG_ASM_FLAG_MMX_READ_INTERLACE \
| PNG_ASM_FLAG_MMX_READ_FILTER_SUB \
| PNG_ASM_FLAG_MMX_READ_FILTER_UP \
| PNG_ASM_FLAG_MMX_READ_FILTER_AVG \
| PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
png_set_asm_flags(png_ptr, flags);
#endif
This method would enable only the MMX read-optimizations available at the
time of libpng 1.2.0's release, regardless of whether a later version of
the DLL were actually being used. (Also note that these functions did not
exist in versions older than 1.2.0, so any attempt to run a dynamically
linked app on such an older version would fail.)
To determine whether the processor supports MMX instructions at all, use
the png_mmx_support() function:
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
mmxsupport = png_mmx_support();
#endif
It returns -1 if MMX support is not compiled into libpng, 0 if MMX code
is compiled but MMX is not supported by the processor, or 1 if MMX support
is fully available. Note that png_mmx_support(), png_get_mmx_flagmask(),
and png_get_asm_flagmask() all may be called without allocating and ini-
tializing any PNG structures (for example, as part of a usage screen or
"about" box).
For more extensive examples of runtime querying, enabling and disabling
of optimized features, see contrib/gregbook/readpng2.c in the libpng
source-code distribution.
VII. 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.
@ -2671,7 +2768,7 @@ 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
VIII. 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
@ -2681,7 +2778,7 @@ of the original PNG Group, Glenn Randers-Pehrson. Guy and Andreas are
still alive and well, but they have moved on to other things.
The old libpng functions png_read_init(), png_write_init(),
png_info_init(), png_read_destroy(), and png_write_destroy() have been
png_info_init(), png_read_destroy(), and png_write_destory() have been
moved to PNG_INTERNAL in version 0.95 to discourage their use. These
functions will be removed from libpng version 2.0.0.
@ -2720,15 +2817,15 @@ application:
png_uint_32 application_vn = PNG_LIBPNG_VER;
VIII. Y2K Compliance in libpng
IX. Y2K Compliance in libpng
May 14, 2001
May 6, 2001
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 1.0.12beta1 are Y2K compliant. It is my belief that earlier
upward through 1.2.0beta1 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

8
libpngpf.3
View File

@ -1,6 +1,6 @@
.TH LIBPNGPF 3 "May 14, 2001"
.TH LIBPNGPF 3 "May 6, 2001"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.0.12beta1
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.0beta1
(private functions)
.SH SYNOPSIS
\fB#include <png.h>\fP
@ -283,6 +283,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.12beta1
\fI\fB
\fBvoid png_init_mmx_flags (png_structp \fIpng_ptr\fP\fB);\fP
\fI\fB
\fBvoid png_init_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP
\fI\fB

2
png.5
View File

@ -1,4 +1,4 @@
.TH PNG 5 "May 14, 2001"
.TH PNG 5 "May 6, 2001"
.SH NAME
png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION

94
png.c
View File

@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
* libpng version 1.0.12beta1 - May 14, 2001
* libpng version 1.2.0beta1 - May 6, 2001
* Copyright (c) 1998-2001 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_12beta1 Your_png_h_is_not_version_1_0_12beta1;
typedef version_1_2_0beta1 Your_png_h_is_not_version_1_2_0beta1;
/* 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] = "1.0.12beta1";
const char png_libpng_ver[18] = "1.2.0beta1";
/* png_sig was changed to a function in version 1.0.5c */
/* Place to hold the signature string for a PNG file. */
@ -213,12 +213,12 @@ png_create_info_struct(png_structp png_ptr)
if(png_ptr == NULL) return (NULL);
#ifdef PNG_USER_MEM_SUPPORTED
if ((info_ptr = (png_infop)png_create_struct_2(PNG_STRUCT_INFO,
png_ptr->malloc_fn, png_ptr->mem_ptr)) != NULL)
png_ptr->malloc_fn)) != NULL)
#else
if ((info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO)) != NULL)
#endif
{
png_info_init_3(&info_ptr, sizeof(png_info));
png_info_init(info_ptr);
}
return (info_ptr);
@ -243,8 +243,7 @@ png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr)
png_info_destroy(png_ptr, info_ptr);
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)info_ptr, png_ptr->free_fn,
png_ptr->mem_ptr);
png_destroy_struct_2((png_voidp)info_ptr, png_ptr->free_fn);
#else
png_destroy_struct((png_voidp)info_ptr);
#endif
@ -256,28 +255,10 @@ png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr)
* and applications using it are urged to use png_create_info_struct()
* instead.
*/
#undef png_info_init
void PNGAPI
void /* PRIVATE */
png_info_init(png_infop info_ptr)
{
/* We only come here via pre-1.0.12-compiled applications */
png_info_init_3(&info_ptr, 0);
}
void PNGAPI
png_info_init_3(png_infopp ptr_ptr, png_size_t png_info_struct_size)
{
png_infop info_ptr = *ptr_ptr;
png_debug(1, "in png_info_init_3\n");
if(sizeof(png_info) > png_info_struct_size)
{
png_destroy_struct(info_ptr);
info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO);
*ptr_ptr = info_ptr;
}
png_debug(1, "in png_info_init\n");
/* set everything to 0 */
png_memset(info_ptr, 0, sizeof (png_info));
}
@ -556,7 +537,7 @@ png_info_destroy(png_structp png_ptr, png_infop info_ptr)
}
#endif
png_info_init_3(&info_ptr, sizeof(png_info));
png_info_init(info_ptr);
}
/* This function returns a pointer to the io_ptr associated with the user
@ -646,7 +627,7 @@ 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 1.0.12beta1 - May 14, 2001\n\
return ((png_charp) "\n libpng version 1.2.0beta1 - May 6, 2001\n\
Copyright (c) 1998-2001 Glenn Randers-Pehrson\n\
Copyright (c) 1996, 1997 Andreas Dilger\n\
Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.\n");
@ -664,8 +645,8 @@ 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) "1.0.12beta1");
return((png_charp) "1.0.12beta1");
return((png_charp) "1.2.0beta1");
return((png_charp) "1.2.0beta1");
}
png_charp PNGAPI
@ -715,9 +696,58 @@ png_uint_32 PNGAPI
png_access_version_number(void)
{
/* Version of *.c files used when building libpng */
return((png_uint_32) 10012L);
return((png_uint_32) 10200L);
}
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
/* GRR: could add this: && defined(PNG_MMX_CODE_SUPPORTED) */
/* this INTERNAL function was added to libpng 1.2.0 */
void /* PRIVATE */
png_init_mmx_flags (png_structp png_ptr)
{
png_ptr->mmx_rowbytes_threshold = 0;
png_ptr->mmx_bitdepth_threshold = 0;
#if (defined(PNG_USE_PNGVCRD) || defined(PNG_USE_PNGGCCRD))
png_ptr->asm_flags |= PNG_ASM_FLAG_MMX_SUPPORT_COMPILED;
if (png_mmx_support()) {
png_ptr->asm_flags |= PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
#ifdef PNG_HAVE_ASSEMBLER_COMBINE_ROW
| PNG_ASM_FLAG_MMX_READ_COMBINE_ROW
#endif
#ifdef PNG_HAVE_ASSEMBLER_READ_INTERLACE
| PNG_ASM_FLAG_MMX_READ_INTERLACE
#endif
#ifndef PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
;
#else
| PNG_ASM_FLAG_MMX_READ_FILTER_SUB
| PNG_ASM_FLAG_MMX_READ_FILTER_UP
| PNG_ASM_FLAG_MMX_READ_FILTER_AVG
| PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
png_ptr->mmx_rowbytes_threshold = PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT;
png_ptr->mmx_bitdepth_threshold = PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT;
#endif
} else {
png_ptr->asm_flags &= ~( PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
| PNG_MMX_READ_FLAGS
| PNG_MMX_WRITE_FLAGS );
}
#else /* !((PNGVCRD || PNGGCCRD) && PNG_ASSEMBLER_CODE_SUPPORTED)) */
/* clear all MMX flags; no support is compiled in */
png_ptr->asm_flags &= ~( PNG_MMX_FLAGS );
#endif /* ?(PNGVCRD || PNGGCCRD) */
}
#endif /* !(PNG_ASSEMBLER_CODE_SUPPORTED) */
/* this function was added to libpng 1.2.0 */
#if !defined(PNG_USE_PNGGCCRD) && \
!(defined(PNG_ASSEMBLER_CODE_SUPPORTED) && defined(PNG_USE_PNGVCRD))

150
png.h
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@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.0.12beta1 - May 14, 2001
* libpng version 1.2.0beta1 - May 6, 2001
* Copyright (c) 1998-2001 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.)
@ -9,7 +9,7 @@
* 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 1.0.12beta1 - May 14, 2001: Glenn
* libpng versions 0.97, January 1998, through 1.2.0beta1 - May 6, 2001: Glenn
* See also "Contributing Authors", below.
*
* Note about libpng version numbers:
@ -70,10 +70,8 @@
* 1.0.11beta1-3 1 10011 2.1.0.11beta1-3
* 1.0.11rc1 1 10011 2.1.0.11rc1
* 1.0.11 1 10011 2.1.0.11
* 1.0.12beta1 2 10012 2.1.0.11beta1
* 1.1.0a-f 1 10100 2.1.1.0a-f (branch abandoned)
* 1.2.0beta1-2 2 10200 2.1.2.0beta1-2
* 1.2.0beta3 3 10200 3.1.2.0beta3
* 1.1.0a-f 1 10100 2.1.1.0 (branch abandoned)
* 1.2.0beta1 2 10200 2.1.2.0beta1
*
* Henceforth the source version will match the shared-library major
* and minor numbers; the shared-library major version number will be
@ -103,7 +101,7 @@
* If you modify libpng you may insert additional notices immediately following
* this sentence.
*
* libpng versions 1.0.7, July 1, 2000, through 1.0.12beta1, May 14, 2001, are
* libpng versions 1.0.7, July 1, 2000, through 1.2.0beta1, May 6, 2001, are
* Copyright (c) 2000, 2001 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
@ -208,13 +206,13 @@
* Y2K compliance in libpng:
* =========================
*
* May 14, 2001
* May 6, 2001
*
* 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 1.0.12beta1 are Y2K compliant. It is my belief that earlier
* upward through 1.2.0beta1 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
@ -270,15 +268,15 @@
*/
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.0.12beta1"
#define PNG_LIBPNG_VER_STRING "1.2.0beta1"
#define PNG_LIBPNG_VER_SONUM 2
#define PNG_LIBPNG_VER_DLLNUM %DLLNUM%
/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
#define PNG_LIBPNG_VER_MAJOR 1
#define PNG_LIBPNG_VER_MINOR 0
#define PNG_LIBPNG_VER_RELEASE 12
#define PNG_LIBPNG_VER_MINOR 2
#define PNG_LIBPNG_VER_RELEASE 0
/* This should match the numeric part of the final component of
* PNG_LIBPNG_VER_STRING, omitting any leading zero: */
@ -297,7 +295,7 @@
* Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
* version 1.0.0 was mis-numbered 100 instead of 10000). From
* version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release */
#define PNG_LIBPNG_VER 10012 /* 1.0.12 */
#define PNG_LIBPNG_VER 10200 /* 1.2.0 */
#ifndef PNG_VERSION_INFO_ONLY
@ -703,7 +701,6 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
png_byte pcal_nparams; /* number of parameters given in pcal_params */
#endif
/* New members added in libpng-1.0.6 */
#ifdef PNG_FREE_ME_SUPPORTED
png_uint_32 free_me; /* flags items libpng is responsible for freeing */
#endif
@ -1144,6 +1141,12 @@ struct png_struct_def
png_charp time_buffer; /* String to hold RFC 1123 time text */
#endif
#ifdef PNG_USER_MEM_SUPPORTED
png_voidp mem_ptr; /* user supplied struct for mem functions */
png_malloc_ptr malloc_fn; /* function for allocating memory */
png_free_ptr free_fn; /* function for freeing memory */
#endif
/* New members added in libpng-1.0.6 */
#ifdef PNG_FREE_ME_SUPPORTED
@ -1160,59 +1163,41 @@ struct png_struct_def
png_bytep chunk_list;
#endif
/* New members added in libpng-1.0.3 */
#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
png_byte rgb_to_gray_status;
/* These were changed from png_byte in libpng-1.0.6 */
png_uint_16 rgb_to_gray_red_coeff;
png_uint_16 rgb_to_gray_green_coeff;
png_uint_16 rgb_to_gray_blue_coeff;
#endif
/* New member added in libpng-1.0.4 (renamed in 1.0.9) */
#if defined(PNG_MNG_FEATURES_SUPPORTED) || \
defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
/* changed from png_byte to png_uint_32 at version 1.2.0 */
/* Note to maintainer: change this to png_uint_32 at next opportunity */
png_byte mng_features_permitted;
#endif
/* New member added in libpng-1.0.7 */
#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
png_fixed_point int_gamma;
#endif
/* New member added in libpng-1.0.9, ifdef'ed out in 1.0.12, enabled in 1.2.0 */
#if defined(PNG_MNG_FEATURES_SUPPORTED)
png_byte filter_type;
#endif
#if defined(PNG_DEBUG) && defined(PNG_USE_PNGGCCRD)
/* New member added in libpng-1.0.10, ifdef'ed out in 1.2.0 */
png_uint_32 row_buf_size;
#endif
/* New members added in libpng-1.2.0 */
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
png_byte mmx_bitdepth_threshold;
png_uint_32 mmx_rowbytes_threshold;
png_uint_32 asm_flags;
#endif
/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */
#ifdef PNG_USER_MEM_SUPPORTED
png_voidp mem_ptr; /* user supplied struct for mem functions */
png_malloc_ptr malloc_fn; /* function for allocating memory */
png_free_ptr free_fn; /* function for freeing memory */
#endif
png_uint_32 row_buf_size;
};
/* This prevents a compiler error in png_get_copyright() in png.c if png.c
and png.h are both at version 1.0.12beta1
and png.h are both at * version 1.2.0beta1
*/
typedef png_structp version_1_0_12beta1;
typedef png_structp version_1_2_0beta1;
typedef png_struct FAR * FAR * png_structpp;
@ -1263,7 +1248,6 @@ extern PNG_EXPORT(void,png_set_compression_buffer_size)
/* Reset the compression stream */
extern PNG_EXPORT(int,png_reset_zstream) PNGARG((png_structp png_ptr));
/* New functions added in libpng-1.0.2 (not enabled by default until 1.2.0) */
#ifdef PNG_USER_MEM_SUPPORTED
extern PNG_EXPORT(png_structp,png_create_read_struct_2)
PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
@ -1294,11 +1278,8 @@ extern PNG_EXPORT(void,png_write_chunk_end) PNGARG((png_structp png_ptr));
extern PNG_EXPORT(png_infop,png_create_info_struct)
PNGARG((png_structp png_ptr));
/* Initialize the info structure (old interface - DEPRECATED) */
extern PNG_EXPORT(void,png_info_init) PNGARG((png_infop info_ptr));
#define png_info_init(info_ptr) png_info_init_3(&info_ptr, sizeof(png_info));
extern PNG_EXPORT(void,png_info_init_3) PNGARG((png_infopp info_ptr,
png_size_t png_info_struct_size));
/* Initialize the info structure (old interface - NOT DLL EXPORTED) */
extern void png_info_init PNGARG((png_infop info_ptr));
/* Writes all the PNG information before the image. */
extern PNG_EXPORT(void,png_write_info_before_PLTE) PNGARG((png_structp png_ptr,
@ -2256,11 +2237,68 @@ extern PNG_EXPORT(png_uint_32,png_permit_mng_features) PNGARG((png_structp
png_ptr, png_uint_32 mng_features_permitted));
#endif
/* png_mmx_support will be included unconditionally starting in version 1.2.0 */
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED) || defined(PNG_USE_PNGGCCRD)
/* Added to version 1.2.0 */
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
#define PNG_ASM_FLAG_MMX_SUPPORT_COMPILED 0x01 /* not user-settable */
#define PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU 0x02 /* not user-settable */
#define PNG_ASM_FLAG_MMX_READ_COMBINE_ROW 0x04
#define PNG_ASM_FLAG_MMX_READ_INTERLACE 0x08
#define PNG_ASM_FLAG_MMX_READ_FILTER_SUB 0x10
#define PNG_ASM_FLAG_MMX_READ_FILTER_UP 0x20
#define PNG_ASM_FLAG_MMX_READ_FILTER_AVG 0x40
#define PNG_ASM_FLAG_MMX_READ_FILTER_PAETH 0x80
#define PNG_ASM_FLAGS_INITIALIZED 0x80000000 /* not user-settable */
#define PNG_MMX_READ_FLAGS ( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \
| PNG_ASM_FLAG_MMX_READ_INTERLACE \
| PNG_ASM_FLAG_MMX_READ_FILTER_SUB \
| PNG_ASM_FLAG_MMX_READ_FILTER_UP \
| PNG_ASM_FLAG_MMX_READ_FILTER_AVG \
| PNG_ASM_FLAG_MMX_READ_FILTER_PAETH )
#define PNG_MMX_WRITE_FLAGS ( 0 )
#define PNG_MMX_FLAGS ( PNG_ASM_FLAG_MMX_SUPPORT_COMPILED \
| PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU \
| PNG_MMX_READ_FLAGS \
| PNG_MMX_WRITE_FLAGS )
#define PNG_SELECT_READ 1
#define PNG_SELECT_WRITE 2
/* pngget.c */
extern PNG_EXPORT(png_uint_32,png_get_mmx_flagmask)
PNGARG((int flag_select, int *compilerID));
/* pngget.c */
extern PNG_EXPORT(png_uint_32,png_get_asm_flagmask)
PNGARG((int flag_select));
/* pngget.c */
extern PNG_EXPORT(png_uint_32,png_get_asm_flags)
PNGARG((png_structp png_ptr));
/* pngget.c */
extern PNG_EXPORT(png_byte,png_get_mmx_bitdepth_threshold)
PNGARG((png_structp png_ptr));
/* pngget.c */
extern PNG_EXPORT(png_uint_32,png_get_mmx_rowbytes_threshold)
PNGARG((png_structp png_ptr));
/* pngset.c */
extern PNG_EXPORT(void,png_set_asm_flags)
PNGARG((png_structp png_ptr, png_uint_32 asm_flags));
/* pngset.c */
extern PNG_EXPORT(void,png_set_mmx_thresholds)
PNGARG((png_structp png_ptr, png_byte mmx_bitdepth_threshold,
png_uint_32 mmx_rowbytes_threshold));
#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
/* png.c, pnggccrd.c, or pngvcrd.c */
extern PNG_EXPORT(int,png_mmx_support) PNGARG((void));
#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
/* Strip the prepended error numbers ("#nnn ") from error and warning
* messages before passing them to the error or warning handler. */
@ -2272,7 +2310,7 @@ extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp
/* Maintainer: Put new public prototypes here ^, in libpng.3, and project defs */
#define PNG_HEADER_VERSION_STRING \
" libpng version 1.0.12beta1 - May 14, 2001 (header)\n"
" libpng version 1.2.0beta1 - May 6, 2001 (header)\n"
#ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
/* With these routines we avoid an integer divide, which will be slower on
@ -2505,10 +2543,8 @@ PNG_EXTERN png_uint_16 png_get_uint_16 PNGARG((png_bytep buf));
* (old interface - DEPRECATED - use png_create_read_struct instead).
*/
extern PNG_EXPORT(void,png_read_init) PNGARG((png_structp png_ptr));
#define png_read_init(png_ptr) png_read_init_3(&png_ptr, \
PNG_LIBPNG_VER_STRING, sizeof(png_struct));
extern PNG_EXPORT(void,png_read_init_3) PNGARG((png_structpp ptr_ptr,
png_const_charp user_png_ver, png_size_t png_struct_size));
#define png_read_init(png_ptr) png_read_init_2(png_ptr, \
PNG_LIBPNG_VER_STRING, sizeof(png_struct), sizeof(png_info));
extern PNG_EXPORT(void,png_read_init_2) PNGARG((png_structp png_ptr,
png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t
png_info_size));
@ -2517,10 +2553,8 @@ extern PNG_EXPORT(void,png_read_init_2) PNGARG((png_structp png_ptr,
* (old interface - DEPRECATED - use png_create_write_struct instead).
*/
extern PNG_EXPORT(void,png_write_init) PNGARG((png_structp png_ptr));
#define png_write_init(png_ptr) png_write_init_3(&png_ptr, \
PNG_LIBPNG_VER_STRING, sizeof(png_struct));
extern PNG_EXPORT(void,png_write_init_3) PNGARG((png_structpp ptr_ptr,
png_const_charp user_png_ver, png_size_t png_struct_size));
#define png_write_init(png_ptr) png_write_init_2(png_ptr, \
PNG_LIBPNG_VER_STRING, sizeof(png_struct), sizeof(png_info));
extern PNG_EXPORT(void,png_write_init_2) PNGARG((png_structp png_ptr,
png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t
png_info_size));
@ -2532,9 +2566,9 @@ PNG_EXTERN png_voidp png_create_struct PNGARG((int type));
PNG_EXTERN void png_destroy_struct PNGARG((png_voidp struct_ptr));
PNG_EXTERN png_voidp png_create_struct_2 PNGARG((int type, png_malloc_ptr
malloc_fn, png_voidp mem_ptr));
malloc_fn));
PNG_EXTERN void png_destroy_struct_2 PNGARG((png_voidp struct_ptr,
png_free_ptr free_fn, png_voidp mem_ptr));
png_free_ptr free_fn));
/* Free any memory that info_ptr points to and reset struct. */
PNG_EXTERN void png_info_destroy PNGARG((png_structp png_ptr,
@ -3078,6 +3112,10 @@ PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info,
png_bytep row));
#endif
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
/* png.c */ /* PRIVATE */
PNG_EXTERN void png_init_mmx_flags PNGARG((png_structp png_ptr));
#endif
/* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
#endif /* PNG_INTERNAL */

2
pngasmrd.h
View File

@ -1,6 +1,6 @@
/* pngasmrd.h - assembler version of utilities to read a PNG file
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 2001 Glenn Randers-Pehrson
*

31
pngconf.h
View File

@ -1,6 +1,6 @@
/* pngconf.h - machine configurable file for libpng
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -47,13 +47,11 @@
/* Enabled by default in 1.2.0. You can disable this if you don't need to
support PNGs that are embedded in MNG datastreams */
/*
#ifndef PNG_NO_MNG_FEATURES
# ifndef PNG_MNG_FEATURES_SUPPORTED
# define PNG_MNG_FEATURES_SUPPORTED
# endif
#endif
*/
#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
# ifndef PNG_FLOATING_POINT_SUPPORTED
@ -590,12 +588,9 @@
# define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
#endif
/* Will be enabled in libpng-1.2.0 */
/*
#ifndef PNG_NO_ERROR_NUMBERS
#define PNG_ERROR_NUMBERS_SUPPORTED
#endif
*/
#ifndef PNG_NO_WRITE_FLUSH
# define PNG_WRITE_FLUSH_SUPPORTED
@ -628,13 +623,12 @@
* png_get_x_offset_microns()
* png_get_y_offset_microns()
*/
#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
#ifndef PNG_NO_EASY_ACCESS
# define PNG_EASY_ACCESS_SUPPORTED
#endif
/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
even when PNG_USE_PNGVCRD or PNG_USE_PNGGCCRD is not defined */
/*
#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
# ifndef PNG_ASSEMBLER_CODE_SUPPORTED
# define PNG_ASSEMBLER_CODE_SUPPORTED
@ -643,24 +637,6 @@
# define PNG_MMX_CODE_SUPPORTED
# endif
#endif
*/
#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
# if defined(PNG_USE_PNGVCRD) || defined(PNG_USE_PNGGCCRD)
# ifndef PNG_ASSEMBLER_CODE_SUPPORTED
# define PNG_ASSEMBLER_CODE_SUPPORTED
# endif
# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
# define PNG_MMX_CODE_SUPPORTED
# endif
# endif
#endif
/* This will be enabled by default in libpng-1.2.0 */
/*
#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
# define PNG_USER_MEM_SUPPORTED
#endif
*/
/* These are currently experimental features, define them if you want */
@ -671,6 +647,9 @@
# define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
# endif
#endif
#ifndef PNG_NO_USER_MEM
# define PNG_USER_MEM_SUPPORTED
#endif
#ifndef PNG_NO_ZALLOC_ZERO
# define PNG_ZALLOC_ZERO
#endif

4
pngerror.c
View File

@ -1,7 +1,7 @@
/* pngerror.c - stub functions for i/o and memory allocation
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -152,7 +152,7 @@ png_chunk_error(png_structp png_ptr, png_const_charp message)
void PNGAPI
png_chunk_warning(png_structp png_ptr, png_const_charp message)
{
char msg[18+64];
char msg[16+64];
png_format_buffer(png_ptr, msg, message);
png_warning(png_ptr, msg);
}

110
pnggccrd.c
View File

@ -6,7 +6,7 @@
* and http://www.intel.com/drg/pentiumII/appnotes/923/923.htm
* for Intel's performance analysis of the MMX vs. non-MMX code.
*
* libpng version 1.0.12beta1 - May 14, 2001
* libpng version 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, Intel Corporation
@ -203,9 +203,14 @@
* - "_ShiftRem.use = 40;" should have been "_ShiftRem.use = 48;"
* - "psllq _ShiftRem, %%mm2" should have been "psrlq _ShiftRem, %%mm2"
*
* 20010101:
* - added new png_init_mmx_flags() function (here only because it needs to
* call mmxsupport(), which should probably become global png_mmxsupport());
* modified other MMX routines to run conditionally (png_ptr->asm_flags)
*
* 20010103:
* - renamed mmxsupport() to png_mmx_support(), with auto-set of mmx_supported,
* and made it public
* and made it public; moved png_init_mmx_flags() to png.c as internal func
*
* 20010104:
* - removed dependency on png_read_filter_row_c() (C code already duplicated
@ -226,7 +231,7 @@
* x 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
* x add support for runtime enable/disable/query of various MMX routines
*/
/*
@ -333,8 +338,37 @@ static int _dif;
static int _patemp; // temp variables for Paeth routine
static int _pbtemp;
static int _pctemp;
static void /* PRIVATE */
png_squelch_warnings(void)
{
_dif = _dif;
_patemp = _patemp;
_pbtemp = _pbtemp;
_pctemp = _pctemp;
_const4 = _const4;
_const6 = _const6;
_MMXLength = _MMXLength;
_mask8_0 = _mask8_0;
_mask16_1 = _mask16_1;
_mask16_0 = _mask16_0;
_mask24_2 = _mask24_2;
_mask24_1 = _mask24_1;
_mask24_0 = _mask24_0;
_mask32_3 = _mask32_3;
_mask32_2 = _mask32_2;
_mask32_1 = _mask32_1;
_mask32_0 = _mask32_0;
_mask48_5 = _mask48_5;
_mask48_4 = _mask48_4;
_mask48_3 = _mask48_3;
_mask48_2 = _mask48_2;
_mask48_1 = _mask48_1;
_mask48_0 = _mask48_0;
}
#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
static int _mmx_supported = 2;
/*===========================================================================*/
@ -370,9 +404,13 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
{
png_debug(1, "in png_combine_row (pnggccrd.c)\n");
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
if (_mmx_supported == 2) {
/* this should have happened in png_init_mmx_flags() already */
png_warning(png_ptr, "asm_flags may not have been initialized");
png_mmx_support();
}
#endif
if (mask == 0xff)
{
@ -556,7 +594,8 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
png_bytep dstptr;
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
if ( _mmx_supported )
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
/* && _mmx_supported */ )
{
png_uint_32 len;
int diff;
@ -689,7 +728,8 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
png_bytep dstptr;
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
if ( _mmx_supported )
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
/* && _mmx_supported */ )
{
png_uint_32 len;
int diff;
@ -837,7 +877,8 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
png_bytep dstptr;
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
if ( _mmx_supported )
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
/* && _mmx_supported */ )
{
png_uint_32 len;
int diff;
@ -1000,7 +1041,8 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
png_bytep dstptr;
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
if ( _mmx_supported )
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
/* && _mmx_supported */ )
{
png_uint_32 len;
int diff;
@ -1170,7 +1212,8 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
png_bytep dstptr;
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
if ( _mmx_supported )
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
/* && _mmx_supported */ )
{
png_uint_32 len;
int diff;
@ -1436,9 +1479,13 @@ png_do_read_interlace(png_structp png_ptr)
png_debug(1, "in png_do_read_interlace (pnggccrd.c)\n");
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
if (_mmx_supported == 2) {
/* this should have happened in png_init_mmx_flags() already */
png_warning(png_ptr, "asm_flags may not have been initialized");
png_mmx_support();
}
#endif
if (row != NULL && row_info != NULL)
{
@ -1644,7 +1691,8 @@ png_do_read_interlace(png_structp png_ptr)
/* New code by Nirav Chhatrapati - Intel Corporation */
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
if ( _mmx_supported )
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_INTERLACE)
/* && _mmx_supported */ )
{
//--------------------------------------------------------------
if (pixel_bytes == 3)
@ -2665,7 +2713,7 @@ png_do_read_interlace(png_structp png_ptr)
#if defined(PNG_HAVE_ASSEMBLER_READ_FILTER_ROW)
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
// These variables are utilized in the functions below. They are declared
@ -2678,8 +2726,6 @@ union uAll {
_HBClearMask = {0x7f7f7f7f7f7f7f7fLL},
_ActiveMask, _ActiveMask2, _ActiveMaskEnd, _ShiftBpp, _ShiftRem;
//===========================================================================//
// //
// P N G _ R E A D _ F I L T E R _ R O W _ M M X _ A V G //
@ -4884,7 +4930,6 @@ png_read_filter_row_mmx_up(png_row_infop row_info, png_bytep row,
/* */
/*===========================================================================*/
#if defined(PNG_HAVE_ASSEMBLER_READ_FILTER_ROW)
/* Optimized png_read_filter_row routines */
@ -4904,6 +4949,8 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
#define UseMMX_paeth 1 // GRR: converted 20000828
if (_mmx_supported == 2) {
/* this should have happened in png_init_mmx_flags() already */
png_warning(png_ptr, "asm_flags may not have been initialized");
png_mmx_support();
}
#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
@ -4914,13 +4961,17 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
{
case 0: sprintf(filnm, "none");
break;
case 1: sprintf(filnm, "sub-%s", "MMX");
case 1: sprintf(filnm, "sub-%s",
(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_SUB)? "MMX" : "x86");
break;
case 2: sprintf(filnm, "up-%s", "MMX");
case 2: sprintf(filnm, "up-%s",
(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_UP)? "MMX" : "x86");
break;
case 3: sprintf(filnm, "avg-%s", "MMX");
case 3: sprintf(filnm, "avg-%s",
(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_AVG)? "MMX" : "x86");
break;
case 4: sprintf(filnm, "Paeth-%s", "MMX");
case 4: sprintf(filnm, "Paeth-%s",
(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH)? "MMX":"x86");
break;
default: sprintf(filnm, "unknw");
break;
@ -4939,9 +4990,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
case PNG_FILTER_VALUE_SUB:
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
if ( _mmx_supported &&
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_SUB) &&
(row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
(row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
{
png_read_filter_row_mmx_sub(row_info, row);
}
@ -4964,9 +5015,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
case PNG_FILTER_VALUE_UP:
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
if ( _mmx_supported &&
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_UP) &&
(row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
(row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
{
png_read_filter_row_mmx_up(row_info, row, prev_row);
}
@ -4988,9 +5039,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
case PNG_FILTER_VALUE_AVG:
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
if ( _mmx_supported &&
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_AVG) &&
(row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
(row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
{
png_read_filter_row_mmx_avg(row_info, row, prev_row);
}
@ -5022,9 +5073,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
case PNG_FILTER_VALUE_PAETH:
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
if ( _mmx_supported &&
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH) &&
(row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
(row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
{
png_read_filter_row_mmx_paeth(row_info, row, prev_row);
}
@ -5177,4 +5228,5 @@ png_mmx_support(void)
return _mmx_supported;
}
#endif /* PNG_USE_PNGGCCRD */

42
pngget.c
View File

@ -1,7 +1,7 @@
/* pngget.c - retrieval of values from info struct
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -137,7 +137,7 @@ png_get_y_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
#if defined(PNG_pHYs_SUPPORTED)
if (info_ptr->valid & PNG_INFO_pHYs)
{
png_debug1(1, "in %s retrieval function\n", "png_get_y_pixels_per_meter");
png_debug1(1, "in %s retrieval function\n", "png_get_y_pixels_per_meter");
if(info_ptr->phys_unit_type != PNG_RESOLUTION_METER)
return (0);
else return (info_ptr->y_pixels_per_unit);
@ -297,7 +297,7 @@ png_get_y_offset_inches(png_structp png_ptr, png_infop info_ptr)
*.00003937);
}
#if defined(PNG_pHYs_SUPPORTED)
#if defined(PNG_READ_pHYs_SUPPORTED)
png_uint_32 PNGAPI
png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr,
png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
@ -330,7 +330,7 @@ png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr,
}
return (retval);
}
#endif /* PNG_pHYs_SUPPORTED */
#endif /* PNG_READ_pHYs_SUPPORTED */
#endif /* PNG_INCH_CONVERSIONS && PNG_FLOATING_POINT_SUPPORTED */
/* png_get_channels really belongs in here, too, but it's been around longer */
@ -355,7 +355,7 @@ png_get_signature(png_structp png_ptr, png_infop info_ptr)
return (NULL);
}
#if defined(PNG_bKGD_SUPPORTED)
#if defined(PNG_READ_bKGD_SUPPORTED)
png_uint_32 PNGAPI
png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
png_color_16p *background)
@ -371,7 +371,7 @@ png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_cHRM_SUPPORTED)
#if defined(PNG_READ_cHRM_SUPPORTED)
#ifdef PNG_FLOATING_POINT_SUPPORTED
png_uint_32 PNGAPI
png_get_cHRM(png_structp png_ptr, png_infop info_ptr,
@ -435,7 +435,7 @@ png_get_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
#endif
#endif
#if defined(PNG_gAMA_SUPPORTED)
#if defined(PNG_READ_gAMA_SUPPORTED)
#ifdef PNG_FLOATING_POINT_SUPPORTED
png_uint_32 PNGAPI
png_get_gAMA(png_structp png_ptr, png_infop info_ptr, double *file_gamma)
@ -467,7 +467,7 @@ png_get_gAMA_fixed(png_structp png_ptr, png_infop info_ptr,
#endif
#endif
#if defined(PNG_sRGB_SUPPORTED)
#if defined(PNG_READ_sRGB_SUPPORTED)
png_uint_32 PNGAPI
png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent)
{
@ -482,7 +482,7 @@ png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent)
}
#endif
#if defined(PNG_iCCP_SUPPORTED)
#if defined(PNG_READ_iCCP_SUPPORTED)
png_uint_32 PNGAPI
png_get_iCCP(png_structp png_ptr, png_infop info_ptr,
png_charpp name, int *compression_type,
@ -504,7 +504,7 @@ png_get_iCCP(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_sPLT_SUPPORTED)
#if defined(PNG_READ_sPLT_SUPPORTED)
png_uint_32 PNGAPI
png_get_sPLT(png_structp png_ptr, png_infop info_ptr,
png_sPLT_tpp spalettes)
@ -515,7 +515,7 @@ png_get_sPLT(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_hIST_SUPPORTED)
#if defined(PNG_READ_hIST_SUPPORTED)
png_uint_32 PNGAPI
png_get_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p *hist)
{
@ -576,7 +576,7 @@ png_get_IHDR(png_structp png_ptr, png_infop info_ptr,
return (0);
}
#if defined(PNG_oFFs_SUPPORTED)
#if defined(PNG_READ_oFFs_SUPPORTED)
png_uint_32 PNGAPI
png_get_oFFs(png_structp png_ptr, png_infop info_ptr,
png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
@ -594,7 +594,7 @@ png_get_oFFs(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_pCAL_SUPPORTED)
#if defined(PNG_READ_pCAL_SUPPORTED)
png_uint_32 PNGAPI
png_get_pCAL(png_structp png_ptr, png_infop info_ptr,
png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams,
@ -618,7 +618,7 @@ png_get_pCAL(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_sCAL_SUPPORTED)
#if defined(PNG_READ_sCAL_SUPPORTED) || defined(PNG_WRITE_sCAL_SUPPORTED)
#ifdef PNG_FLOATING_POINT_SUPPORTED
png_uint_32 PNGAPI
png_get_sCAL(png_structp png_ptr, png_infop info_ptr,
@ -654,7 +654,7 @@ png_get_sCAL_s(png_structp png_ptr, png_infop info_ptr,
#endif
#endif
#if defined(PNG_pHYs_SUPPORTED)
#if defined(PNG_READ_pHYs_SUPPORTED)
png_uint_32 PNGAPI
png_get_pHYs(png_structp png_ptr, png_infop info_ptr,
png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
@ -701,7 +701,7 @@ png_get_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp *palette,
return (0);
}
#if defined(PNG_sBIT_SUPPORTED)
#if defined(PNG_READ_sBIT_SUPPORTED)
png_uint_32 PNGAPI
png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)
{
@ -716,7 +716,7 @@ png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)
}
#endif
#if defined(PNG_TEXT_SUPPORTED)
#if defined(PNG_READ_TEXT_SUPPORTED)
png_uint_32 PNGAPI
png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr,
int *num_text)
@ -738,7 +738,7 @@ png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr,
}
#endif
#if defined(PNG_tIME_SUPPORTED)
#if defined(PNG_READ_tIME_SUPPORTED)
png_uint_32 PNGAPI
png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
{
@ -753,7 +753,7 @@ png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
}
#endif
#if defined(PNG_tRNS_SUPPORTED)
#if defined(PNG_READ_tRNS_SUPPORTED)
png_uint_32 PNGAPI
png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
png_bytep *trans, int *num_trans, png_color_16p *trans_values)
@ -792,7 +792,7 @@ png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
png_uint_32 PNGAPI
png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr,
png_unknown_chunkpp unknowns)
@ -811,7 +811,7 @@ png_get_rgb_to_gray_status (png_structp png_ptr)
}
#endif
#if defined(PNG_USER_CHUNKS_SUPPORTED)
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
png_voidp PNGAPI
png_get_user_chunk_ptr(png_structp png_ptr)
{

64
pngmem.c
View File

@ -1,7 +1,7 @@
/* pngmem.c - stub functions for memory allocation
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -27,12 +27,12 @@ png_voidp /* PRIVATE */
png_create_struct(int type)
{
#ifdef PNG_USER_MEM_SUPPORTED
return (png_create_struct_2(type, NULL, NULL));
return (png_create_struct_2(type, NULL));
}
/* Alternate version of png_create_struct, for use with user-defined malloc. */
png_voidp /* PRIVATE */
png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
png_create_struct_2(int type, png_malloc_ptr malloc_fn)
{
#endif /* PNG_USER_MEM_SUPPORTED */
png_size_t size;
@ -48,18 +48,9 @@ png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
#ifdef PNG_USER_MEM_SUPPORTED
if(malloc_fn != NULL)
{
if (mem_ptr != NULL)
{
png_struct dummy_struct;
png_structp png_ptr = &dummy_struct;
png_ptr->mem_ptr=mem_ptr;
struct_ptr = (*(malloc_fn))(png_ptr, size);
}
else
struct_ptr = (*(malloc_fn))(NULL, size);
if (struct_ptr != NULL)
if ((struct_ptr = (*(malloc_fn))(NULL, size)) != NULL)
png_memset(struct_ptr, 0, size);
return (struct_ptr);
return (struct_ptr);
}
#endif /* PNG_USER_MEM_SUPPORTED */
if ((struct_ptr = (png_voidp)farmalloc(size)) != NULL)
@ -75,13 +66,12 @@ void /* PRIVATE */
png_destroy_struct(png_voidp struct_ptr)
{
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2(struct_ptr, (png_free_ptr)NULL, (png_voidp)NULL);
png_destroy_struct_2(struct_ptr, (png_free_ptr)NULL);
}
/* Free memory allocated by a png_create_struct() call */
void /* PRIVATE */
png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
png_voidp mem_ptr)
png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn)
{
#endif
if (struct_ptr != NULL)
@ -91,7 +81,6 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
{
png_struct dummy_struct;
png_structp png_ptr = &dummy_struct;
png_ptr->mem_ptr=mem_ptr;
(*(free_fn))(png_ptr, struct_ptr);
return;
}
@ -130,12 +119,7 @@ png_malloc(png_structp png_ptr, png_uint_32 size)
#ifdef PNG_USER_MEM_SUPPORTED
if(png_ptr->malloc_fn != NULL)
{
ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, size));
if (ret == NULL)
png_error(png_ptr, "Out of memory!");
return (ret);
}
return ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, size));
else
return png_malloc_default(png_ptr, size);
}
@ -297,14 +281,14 @@ png_voidp /* PRIVATE */
png_create_struct(int type)
{
#ifdef PNG_USER_MEM_SUPPORTED
return (png_create_struct_2(type, NULL, NULL));
return (png_create_struct_2(type, NULL));
}
/* Allocate memory for a png_struct or a png_info. The malloc and
memset can be replaced by a single call to calloc() if this is thought
to improve performance noticably.*/
png_voidp /* PRIVATE */
png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
png_create_struct_2(int type, png_malloc_ptr malloc_fn)
{
#endif /* PNG_USER_MEM_SUPPORTED */
png_size_t size;
@ -320,16 +304,7 @@ png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
#ifdef PNG_USER_MEM_SUPPORTED
if(malloc_fn != NULL)
{
if (mem_ptr != NULL)
{
png_struct dummy_struct;
png_structp png_ptr = &dummy_struct;
png_ptr->mem_ptr=mem_ptr;
struct_ptr = (*(malloc_fn))(png_ptr, size);
}
else
struct_ptr = (*(malloc_fn))(NULL, size);
if (struct_ptr != NULL)
if ((struct_ptr = (*(malloc_fn))(NULL, size)) != NULL)
png_memset(struct_ptr, 0, size);
return (struct_ptr);
}
@ -357,13 +332,12 @@ void /* PRIVATE */
png_destroy_struct(png_voidp struct_ptr)
{
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2(struct_ptr, (png_free_ptr)NULL, (png_voidp)NULL);
png_destroy_struct_2(struct_ptr, (png_free_ptr)NULL);
}
/* Free memory allocated by a png_create_struct() call */
void /* PRIVATE */
png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
png_voidp mem_ptr)
png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn)
{
#endif /* PNG_USER_MEM_SUPPORTED */
if (struct_ptr != NULL)
@ -373,7 +347,6 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
{
png_struct dummy_struct;
png_structp png_ptr = &dummy_struct;
png_ptr->mem_ptr=mem_ptr;
(*(free_fn))(png_ptr, struct_ptr);
return;
}
@ -400,18 +373,15 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
png_voidp PNGAPI
png_malloc(png_structp png_ptr, png_uint_32 size)
{
#ifndef PNG_USER_MEM_SUPPORTED
png_voidp ret;
#endif
if (png_ptr == NULL || size == 0)
return ((png_voidp)NULL);
#ifdef PNG_USER_MEM_SUPPORTED
if(png_ptr->malloc_fn != NULL)
{
ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, size));
if (ret == NULL)
png_error(png_ptr, "Out of Memory!");
return (ret);
}
return ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, size));
else
return (png_malloc_default(png_ptr, size));
}
@ -437,7 +407,9 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size)
#endif
if (ret == NULL)
{
png_error(png_ptr, "Out of Memory");
}
return (ret);
}

52
pngpread.c
View File

@ -1,7 +1,7 @@
/* pngpread.c - read a png file in push mode
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -796,19 +796,6 @@ png_push_process_row(png_structp png_ptr)
png_read_push_finish_row(png_ptr);
}
}
if (png_ptr->pass == 4 && png_ptr->height <= 4)
{
for (i = 0; i < 2 && png_ptr->pass == 4; i++)
{
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
}
if (png_ptr->pass == 6 && png_ptr->height <= 4)
{
png_push_have_row(png_ptr, NULL);
png_read_push_finish_row(png_ptr);
}
break;
}
case 1:
@ -995,20 +982,19 @@ png_read_push_finish_row(png_structp png_ptr)
#if defined(PNG_READ_tEXt_SUPPORTED)
void /* PRIVATE */
png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
length)
png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
{
png_error(png_ptr, "Out of place tEXt");
/* to quiet some compiler warnings */
if(info_ptr == NULL) return;
info_ptr = info_ptr;
}
#ifdef PNG_MAX_MALLOC_64K
png_ptr->skip_length = 0; /* This may not be necessary */
if (length > (png_uint_32)65535L) /* Can't hold entire string in memory */
if (length > (png_uint_32)65535L) /* Can't hold the entire string in memory */
{
png_warning(png_ptr, "tEXt chunk too large to fit in memory");
png_ptr->skip_length = length - (png_uint_32)65535L;
@ -1087,14 +1073,13 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr)
#if defined(PNG_READ_zTXt_SUPPORTED)
void /* PRIVATE */
png_push_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
length)
png_push_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
{
png_error(png_ptr, "Out of place zTXt");
/* to quiet some compiler warnings */
if(info_ptr == NULL) return;
info_ptr = info_ptr;
}
#ifdef PNG_MAX_MALLOC_64K
@ -1200,8 +1185,8 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
if (text == NULL)
{
text = (png_charp)png_malloc(png_ptr,
(png_uint_32)(png_ptr->zbuf_size - png_ptr->zstream.avail_out
+ key_size + 1));
(png_uint_32)(png_ptr->zbuf_size - png_ptr->zstream.avail_out +
key_size + 1));
png_memcpy(text + key_size, png_ptr->zbuf,
png_ptr->zbuf_size - png_ptr->zstream.avail_out);
png_memcpy(text, key, key_size);
@ -1272,20 +1257,19 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
#if defined(PNG_READ_iTXt_SUPPORTED)
void /* PRIVATE */
png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
length)
png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
{
png_error(png_ptr, "Out of place iTXt");
/* to quiet some compiler warnings */
if(info_ptr == NULL) return;
info_ptr = info_ptr;
}
#ifdef PNG_MAX_MALLOC_64K
png_ptr->skip_length = 0; /* This may not be necessary */
if (length > (png_uint_32)65535L) /* Can't hold entire string in memory */
if (length > (png_uint_32)65535L) /* Can't hold the entire string in memory */
{
png_warning(png_ptr, "iTXt chunk too large to fit in memory");
png_ptr->skip_length = length - (png_uint_32)65535L;
@ -1383,8 +1367,7 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)
* name or a critical chunk), the chunk is (currently) silently ignored.
*/
void /* PRIVATE */
png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
length)
png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
png_uint_32 skip=0;
png_check_chunk_name(png_ptr, png_ptr->chunk_name);
@ -1395,15 +1378,14 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
if(png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
HANDLE_CHUNK_ALWAYS
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
&& png_ptr->read_user_chunk_fn == NULL
&& png_ptr->read_user_chunk_fn == (png_user_chunk_ptr)NULL
#endif
)
#endif
png_chunk_error(png_ptr, "unknown critical chunk");
/* to quiet compiler warnings about unused info_ptr */
if (info_ptr == NULL)
return;
/* to quiet compiler warnings about unused info_ptr */
info_ptr = info_ptr;
}
#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
@ -1420,12 +1402,12 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
}
#endif
png_strcpy((png_charp)chunk.name, (png_charp)png_ptr->chunk_name);
strcpy((png_charp)chunk.name, (png_charp)png_ptr->chunk_name);
chunk.data = (png_bytep)png_malloc(png_ptr, length);
png_crc_read(png_ptr, chunk.data, length);
chunk.size = length;
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
if(png_ptr->read_user_chunk_fn != NULL)
if(png_ptr->read_user_chunk_fn != (png_user_chunk_ptr)NULL)
{
/* callback to user unknown chunk handler */
if ((*(png_ptr->read_user_chunk_fn)) (png_ptr, &chunk) <= 0)

104
pngread.c
View File

@ -1,7 +1,7 @@
/* pngread.c - read a PNG file
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -46,7 +46,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
png_debug(1, "in png_create_read_struct\n");
#ifdef PNG_USER_MEM_SUPPORTED
if ((png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
(png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr)) == NULL)
(png_malloc_ptr)malloc_fn)) == NULL)
#else
if ((png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG)) == NULL)
#endif
@ -54,6 +54,10 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
return (png_structp)NULL;
}
#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
png_init_mmx_flags(png_ptr); /* 1.2.0 addition */
#endif
#ifdef PNG_SETJMP_SUPPORTED
#ifdef USE_FAR_KEYWORD
if (setjmp(jmpbuf))
@ -92,7 +96,6 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
* only check the first digit.
*/
if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] ||
(user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
(user_png_ver[0] == '0' && user_png_ver[2] < '9'))
{
png_error(png_ptr,
@ -100,17 +103,15 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
}
/* Libpng 1.0.6 was not binary compatible, due to insertion of the
info_ptr->free_me member. Libpng-1.0.1 and earlier were not
compatible due to insertion of the user transform function. Note
to maintainer: this test can be removed from version 1.2.0 and
beyond because the previous test would have already rejected it. */
info_ptr->free_me member. Note to maintainer: this test can be
removed from version 2.0.0 and beyond because the previous test
would have already rejected it. */
if (user_png_ver[0] == '1' && user_png_ver[2] == '0' &&
(user_png_ver[4] < '2' || user_png_ver[4] == '6') &&
user_png_ver[5] == '\0')
if (user_png_ver[4] == '6' && user_png_ver[2] == '0' &&
user_png_ver[0] == '1' && user_png_ver[5] == '\0')
{
png_error(png_ptr,
"Application must be recompiled; versions <= 1.0.6 were incompatible");
"Application must be recompiled; version 1.0.6 was incompatible");
}
}
@ -147,42 +148,18 @@ void PNGAPI
png_read_init(png_structp png_ptr)
{
/* We only come here via pre-1.0.7-compiled applications */
png_read_init_2(png_ptr, "1.0.0", 0, 0);
png_read_init_2(png_ptr, "1.0.0", 10000, 10000);
}
#undef png_read_init_2
void PNGAPI
png_read_init_2(png_structp png_ptr, png_const_charp user_png_ver,
png_size_t png_struct_size, png_size_t png_info_size)
{
/* We only come here via pre-1.0.12-compiled applications */
if(sizeof(png_struct) > png_struct_size)
{
png_ptr->error_fn=(png_error_ptr)NULL;
png_error(png_ptr,
"The png struct allocated by the application for reading is too small.");
}
if(sizeof(png_info) > png_info_size)
{
png_ptr->error_fn=(png_error_ptr)NULL;
png_error(png_ptr,
"The info struct allocated by application for reading is too small.");
}
png_read_init_3(&png_ptr, user_png_ver, png_struct_size);
}
void PNGAPI
png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
png_size_t png_struct_size)
{
#ifdef PNG_SETJMP_SUPPORTED
jmp_buf tmp_jmp; /* to save current jump buffer */
#endif
int i=0;
png_structp png_ptr=*ptr_ptr;
do
{
if(user_png_ver[i] != png_libpng_ver[i])
@ -190,31 +167,35 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
#ifdef PNG_LEGACY_SUPPORTED
png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
#else
png_ptr->warning_fn=(png_error_ptr)NULL;
png_warning(png_ptr,
"Application uses deprecated png_read_init() and should be recompiled.");
break;
png_ptr->error_fn=(png_error_ptr)NULL;
png_error(png_ptr,
"Application uses deprecated png_read_init() and must be recompiled.");
#endif
}
} while (png_libpng_ver[i++]);
png_debug(1, "in png_read_init_3\n");
if(sizeof(png_struct) > png_struct_size ||
sizeof(png_info) > png_info_size)
{
png_ptr->error_fn=(png_error_ptr)NULL;
png_error(png_ptr,
"Application and library have different sized structs. Please recompile.");
}
png_debug(1, "in png_read_init_2\n");
#ifdef PNG_SETJMP_SUPPORTED
/* save jump buffer and error functions */
png_memcpy(tmp_jmp, png_ptr->jmpbuf, sizeof (jmp_buf));
#endif
if(sizeof(png_struct) > png_struct_size)
{
png_destroy_struct(png_ptr);
*ptr_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG);
png_ptr = *ptr_ptr;
}
/* reset all variables to 0 */
png_memset(png_ptr, 0, sizeof (png_struct));
#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
png_init_mmx_flags(png_ptr); /* 1.2.0 addition */
#endif
#ifdef PNG_SETJMP_SUPPORTED
/* restore jump buffer */
png_memcpy(png_ptr->jmpbuf, tmp_jmp, sizeof (jmp_buf));
@ -742,7 +723,7 @@ 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 1.0.12beta1
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.0beta1
*/
void PNGAPI
@ -791,7 +772,7 @@ 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 1.0.12beta1
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.0beta1
*/
void PNGAPI
png_read_image(png_structp png_ptr, png_bytepp image)
@ -1021,7 +1002,6 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
png_infop info_ptr = NULL, end_info_ptr = NULL;
#ifdef PNG_USER_MEM_SUPPORTED
png_free_ptr free_fn = NULL;
png_voidp mem_ptr = NULL;
#endif
png_debug(1, "in png_destroy_read_struct\n");
@ -1037,7 +1017,6 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
#ifdef PNG_USER_MEM_SUPPORTED
free_fn = png_ptr->free_fn;
mem_ptr = png_ptr->mem_ptr;
#endif
png_read_destroy(png_ptr, info_ptr, end_info_ptr);
@ -1049,8 +1028,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
#endif
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)info_ptr, (png_free_ptr)free_fn,
(png_voidp)mem_ptr);
png_destroy_struct_2((png_voidp)info_ptr, free_fn);
#else
png_destroy_struct((png_voidp)info_ptr);
#endif
@ -1063,8 +1041,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
png_free_data(png_ptr, end_info_ptr, PNG_FREE_TEXT, -1);
#endif
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)end_info_ptr, (png_free_ptr)free_fn,
(png_voidp)mem_ptr);
png_destroy_struct_2((png_voidp)end_info_ptr, free_fn);
#else
png_destroy_struct((png_voidp)end_info_ptr);
#endif
@ -1074,8 +1051,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
if (png_ptr != NULL)
{
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)png_ptr, (png_free_ptr)free_fn,
(png_voidp)mem_ptr);
png_destroy_struct_2((png_voidp)png_ptr, free_fn);
#else
png_destroy_struct((png_voidp)png_ptr);
#endif
@ -1084,7 +1060,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
}
/* free all memory used by the read (old method) */
void /* PRIVATE */
void PNGAPI
png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr)
{
#ifdef PNG_SETJMP_SUPPORTED
@ -1337,7 +1313,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
/* Optional call to gamma correct and add the background to the palette
* and update info structure. REQUIRED if you are expecting libpng to
* update the palette for you (i.e., you selected such a transform above).
* update the palette for you (ie you selected such a transform above).
*/
png_read_update_info(png_ptr, info_ptr);
@ -1349,15 +1325,13 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
if(info_ptr->row_pointers == NULL)
{
info_ptr->row_pointers = (png_bytepp)png_malloc(png_ptr,
info_ptr->height * sizeof(png_bytep));
info_ptr->height * sizeof(png_bytep));
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_ROWS;
#endif
for (row = 0; row < (int)info_ptr->height; row++)
{
info_ptr->row_pointers[row] = (png_bytep)png_malloc(png_ptr,
info_ptr->row_pointers[row] = png_malloc(png_ptr,
png_get_rowbytes(png_ptr, info_ptr));
}
}
png_read_image(png_ptr, info_ptr->row_pointers);
@ -1366,7 +1340,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
/* read rest of file, and get additional chunks in info_ptr - REQUIRED */
png_read_end(png_ptr, info_ptr);
if(transforms == 0 || params == NULL)
if(transforms == 0 || params == (voidp)NULL)
/* quiet compiler warnings */ return;
}

4
pngrio.c
View File

@ -1,7 +1,7 @@
/* pngrio.c - functions for data input
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -26,7 +26,7 @@
void /* PRIVATE */
png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_debug1(4,"reading %d bytes\n", (int)length);
png_debug1(4,"reading %d bytes\n", length);
if (png_ptr->read_data_fn != NULL)
(*(png_ptr->read_data_fn))(png_ptr, data, length);
else

2
pngrtran.c
View File

@ -1,7 +1,7 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

106
pngrutil.c
View File

@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -30,7 +30,7 @@ __inline double strtod(const char *nptr, char **endptr)
MultiByteToWideChar(CP_ACP, 0, nptr, -1, str, len);
result = wcstod(str, &end);
len = WideCharToMultiByte(CP_ACP, 0, end, -1, NULL, 0, NULL, NULL);
*endptr = (char *)nptr + (png_strlen(nptr) - len + 1);
*endptr = (char *)nptr + (strlen(nptr) - len + 1);
free(str);
}
return result;
@ -220,7 +220,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
png_ptr->zbuf_size - png_ptr->zstream.avail_out;
text = (png_charp)png_malloc(png_ptr, text_size + 1);
png_memcpy(text + prefix_size, png_ptr->zbuf,
text_size - prefix_size);
text_size - prefix_size);
png_memcpy(text, chunkdata, prefix_size);
*(text + text_size) = 0x00;
}
@ -332,6 +332,59 @@ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
filter_type = buf[11];
interlace_type = buf[12];
/* check for width and height valid values */
if (width == 0 || width > PNG_MAX_UINT || height == 0 ||
height > PNG_MAX_UINT)
png_error(png_ptr, "Invalid image size in IHDR");
/* check other values */
if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
bit_depth != 8 && bit_depth != 16)
png_error(png_ptr, "Invalid bit depth in IHDR");
if (color_type < 0 || color_type == 1 ||
color_type == 5 || color_type > 6)
png_error(png_ptr, "Invalid color type in IHDR");
if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) ||
((color_type == PNG_COLOR_TYPE_RGB ||
color_type == PNG_COLOR_TYPE_GRAY_ALPHA ||
color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8))
png_error(png_ptr, "Invalid color type/bit depth combination in IHDR");
if (interlace_type >= PNG_INTERLACE_LAST)
png_error(png_ptr, "Unknown interlace method in IHDR");
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)
png_error(png_ptr, "Unknown filter method in IHDR");
#endif
/* set internal variables */
png_ptr->width = width;
@ -339,9 +392,7 @@ 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;
#if defined(PNG_MNG_FEATURES_SUPPORTED)
png_ptr->filter_type = (png_byte)filter_type;
#endif
/* find number of channels */
switch (png_ptr->color_type)
@ -398,13 +449,6 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_ptr->mode |= PNG_HAVE_PLTE;
if (!(png_ptr->color_type&PNG_COLOR_MASK_COLOR))
{
png_warning(png_ptr,
"Ignoring PLTE chunk in grayscale PNG");
png_crc_finish(png_ptr, length);
return;
}
#if !defined(PNG_READ_OPT_PLTE_SUPPORTED)
if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
{
@ -582,11 +626,7 @@ png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
igamma = (png_fixed_point)png_get_uint_32(buf);
/* check for zero gamma */
if (igamma == 0)
{
png_warning(png_ptr,
"Ignoring gAMA chunk with gamma=0");
return;
}
return;
#if defined(PNG_READ_sRGB_SUPPORTED)
if (info_ptr->valid & PNG_INFO_sRGB)
@ -1087,7 +1127,7 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
chunkdata = (png_bytep)png_malloc(png_ptr, length + 1);
slength = (png_size_t)length;
png_crc_read(png_ptr, (png_bytep)chunkdata, slength);
png_crc_read(png_ptr, chunkdata, slength);
if (png_crc_finish(png_ptr, skip))
{
@ -1117,8 +1157,7 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
if (data_length % entry_size)
{
png_free(png_ptr, chunkdata);
png_warning(png_ptr, "sPLT chunk has bad length");
return;
png_error(png_ptr, "sPLT chunk has bad length");
}
new_palette.nentries = data_length / entry_size;
@ -1675,8 +1714,8 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#else
#ifdef PNG_FIXED_POINT_SUPPORTED
swidth = (png_charp)png_malloc(png_ptr, png_strlen(ep) + 1);
png_memcpy(swidth, ep, (png_size_t)png_strlen(ep));
swidth = (png_charp)png_malloc(png_ptr, strlen(ep) + 1);
png_memcpy(swidth, ep, (png_size_t)strlen(ep));
#endif
#endif
@ -1693,8 +1732,8 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#else
#ifdef PNG_FIXED_POINT_SUPPORTED
sheight = (png_charp)png_malloc(png_ptr, png_strlen(ep) + 1);
png_memcpy(sheight, ep, (png_size_t)png_strlen(ep));
sheight = (png_charp)png_malloc(png_ptr, strlen(ep) + 1);
png_memcpy(sheight, ep, (png_size_t)strlen(ep));
#endif
#endif
@ -1867,7 +1906,7 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
#endif
chunkdata = (png_charp)png_malloc(png_ptr, length + 1);
slength = (png_size_t)length;
slength = (png_size_t)length;
png_crc_read(png_ptr, (png_bytep)chunkdata, slength);
if (png_crc_finish(png_ptr, 0))
{
@ -2041,7 +2080,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
if(png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
HANDLE_CHUNK_ALWAYS
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
&& png_ptr->read_user_chunk_fn == NULL
&& png_ptr->read_user_chunk_fn == (png_user_chunk_ptr)NULL
#endif
)
#endif
@ -2061,12 +2100,12 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
length = (png_uint_32)65535L;
}
#endif
png_strcpy((png_charp)chunk.name, (png_charp)png_ptr->chunk_name);
strcpy((png_charp)chunk.name, (png_charp)png_ptr->chunk_name);
chunk.data = (png_bytep)png_malloc(png_ptr, length);
chunk.size = (png_size_t)length;
png_crc_read(png_ptr, (png_bytep)chunk.data, length);
png_crc_read(png_ptr, chunk.data, length);
chunk.size = length;
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
if(png_ptr->read_user_chunk_fn != NULL)
if(png_ptr->read_user_chunk_fn != (png_user_chunk_ptr)NULL)
{
/* callback to user unknown chunk handler */
if ((*(png_ptr->read_user_chunk_fn)) (png_ptr, &chunk) <= 0)
@ -2329,10 +2368,6 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
#ifdef PNG_READ_INTERLACING_SUPPORTED
#ifndef PNG_HAVE_ASSEMBLER_READ_INTERLACE /* else in pngvcrd.c, pnggccrd.c */
/* OLD pre-1.0.9 interface:
void png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
png_uint_32 transformations)
*/
void /* PRIVATE */
png_do_read_interlace(png_structp png_ptr)
{
@ -2968,9 +3003,6 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
png_error(png_ptr, "This image requires a row greater than 64KB");
#endif
png_ptr->row_buf = (png_bytep)png_malloc(png_ptr, row_bytes);
#if defined(PNG_DEBUG) && defined(PNG_USE_PNGGCCRD)
png_ptr->row_buf_size = row_bytes;
#endif
#ifdef PNG_MAX_MALLOC_64K
if ((png_uint_32)png_ptr->rowbytes + 1 > (png_uint_32)65536L)

112
pngset.c
View File

@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -109,10 +109,9 @@ png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma)
info_ptr->int_gamma = (int)(file_gamma*100000.+.5);
#endif
info_ptr->valid |= PNG_INFO_gAMA;
if(file_gamma == 0.0)
png_warning(png_ptr, "Setting gamma=0");
}
#endif
#endif
void PNGAPI
png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
int_gamma)
@ -128,10 +127,7 @@ png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
info_ptr->int_gamma = int_gamma;
#endif
info_ptr->valid |= PNG_INFO_gAMA;
if(int_gamma == 0)
png_warning(png_ptr, "Setting gamma=0");
}
#endif
#if defined(PNG_hIST_SUPPORTED)
void PNGAPI
@ -143,11 +139,8 @@ png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p 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.");
return;
}
"Palette size 0, hIST allocation skipped.");
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0);
@ -179,61 +172,6 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
if (png_ptr == NULL || info_ptr == NULL)
return;
/* check for width and height valid values */
if (width == 0 || height == 0)
png_error(png_ptr, "Image width or height is zero in IHDR");
if (width > PNG_MAX_UINT || height > PNG_MAX_UINT)
png_error(png_ptr, "Invalid image size in IHDR");
/* check other values */
if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
bit_depth != 8 && bit_depth != 16)
png_error(png_ptr, "Invalid bit depth in IHDR");
if (color_type < 0 || color_type == 1 ||
color_type == 5 || color_type > 6)
png_error(png_ptr, "Invalid color type in IHDR");
if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) ||
((color_type == PNG_COLOR_TYPE_RGB ||
color_type == PNG_COLOR_TYPE_GRAY_ALPHA ||
color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8))
png_error(png_ptr, "Invalid color type/bit depth combination in IHDR");
if (interlace_type >= PNG_INTERLACE_LAST)
png_error(png_ptr, "Unknown interlace method in IHDR");
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)
png_error(png_ptr, "Unknown filter method in IHDR");
#endif
info_ptr->width = width;
info_ptr->height = height;
info_ptr->bit_depth = (png_byte)bit_depth;
@ -310,7 +248,6 @@ png_set_pCAL(png_structp png_ptr, png_infop info_ptr,
info_ptr->pcal_params = (png_charpp)png_malloc(png_ptr,
(png_uint_32)((nparams + 1) * sizeof(png_charp)));
info_ptr->pcal_params[nparams] = NULL;
for (i = 0; i < nparams; i++)
@ -365,7 +302,7 @@ png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
length = png_strlen(sheight) + 1;
png_debug1(3, "allocating unit for info (%d bytes)\n", length);
info_ptr->scal_s_height = (png_charp)png_malloc(png_ptr, length);
info_ptr->scal_s_width = (png_charp)png_malloc(png_ptr, length);
png_memcpy(info_ptr->scal_s_height, sheight, (png_size_t)length);
info_ptr->valid |= PNG_INFO_sCAL;
@ -412,7 +349,7 @@ png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
#endif
png_ptr->palette = (png_colorp)png_zalloc(png_ptr, (uInt)num_palette,
sizeof (png_color));
png_memcpy(png_ptr->palette, palette, 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;
@ -535,9 +472,9 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL)
return;
new_iccp_name = (png_charp)png_malloc(png_ptr, png_strlen(name)+1);
png_strcpy(new_iccp_name, name);
new_iccp_profile = (png_charp)png_malloc(png_ptr, proflen);
new_iccp_name = png_malloc(png_ptr, png_strlen(name)+1);
strcpy(new_iccp_name, name);
new_iccp_profile = png_malloc(png_ptr, proflen);
png_memcpy(new_iccp_profile, profile, (png_size_t)proflen);
png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0);
@ -606,7 +543,7 @@ png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
png_size_t lang_len,lang_key_len;
png_textp textp = &(info_ptr->text[info_ptr->num_text]);
if (text_ptr[i].key == NULL)
if (text_ptr[i].key == (png_charp)NULL)
continue;
key_len = png_strlen(text_ptr[i].key);
@ -620,11 +557,11 @@ png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
#ifdef PNG_iTXt_SUPPORTED
{
/* set iTXt data */
if (text_ptr[i].key != NULL)
if (text_ptr[i].key != (png_charp)NULL)
lang_len = png_strlen(text_ptr[i].lang);
else
lang_len = 0;
if (text_ptr[i].lang_key != NULL)
if (text_ptr[i].lang_key != (png_charp)NULL)
lang_key_len = png_strlen(text_ptr[i].lang_key);
else
lang_key_len = 0;
@ -636,7 +573,7 @@ png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
}
#endif
if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0')
if (text_ptr[i].text == (png_charp)NULL || text_ptr[i].text[0] == '\0')
{
text_length = 0;
#ifdef PNG_iTXt_SUPPORTED
@ -654,9 +591,8 @@ png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
textp->key = (png_charp)png_malloc(png_ptr,
(png_uint_32)(key_len + text_length + lang_len + lang_key_len + 4));
png_debug2(2, "Allocated %lu bytes at %x in png_set_text\n",
(png_uint_32)(key_len + lang_len + lang_key_len + text_length + 4),
(int)textp->key);
png_debug2(2, "Allocated %d bytes at %x in png_set_text\n",
key_len + lang_len + lang_key_len + text_length + 4, (int)textp->key);
png_memcpy(textp->key, text_ptr[i].key,
(png_size_t)(key_len));
@ -740,9 +676,8 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
#endif
png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr,
num_trans);
png_memcpy(info_ptr->trans, trans, num_trans);
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
@ -784,12 +719,12 @@ png_set_sPLT(png_structp png_ptr,
png_sPLT_tp from = entries + i;
to->name = (png_charp)png_malloc(png_ptr,
png_strlen(from->name) + 1);
png_strlen(from->name) + 1);
png_strcpy(to->name, from->name);
to->entries = (png_sPLT_entryp)png_malloc(png_ptr,
from->nentries * sizeof(png_sPLT_t));
from->nentries * sizeof(png_sPLT_t));
png_memcpy(to->entries, from->entries,
from->nentries * sizeof(png_sPLT_t));
from->nentries * sizeof(png_sPLT_t));
to->nentries = from->nentries;
to->depth = from->depth;
}
@ -803,7 +738,7 @@ png_set_sPLT(png_structp png_ptr,
}
#endif /* PNG_sPLT_SUPPORTED */
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
void PNGAPI
png_set_unknown_chunks(png_structp png_ptr,
png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns)
@ -905,8 +840,8 @@ png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
if (chunk_list == NULL)
return;
old_num_chunks=png_ptr->num_chunk_list;
new_list=(png_bytep)png_malloc(png_ptr,5*(num_chunks+old_num_chunks));
if(png_ptr->chunk_list != NULL)
new_list=png_malloc(png_ptr,5*(num_chunks+old_num_chunks));
if(png_ptr->chunk_list != (png_bytep)NULL)
{
png_memcpy(new_list, png_ptr->chunk_list, 5*old_num_chunks);
png_free(png_ptr, png_ptr->chunk_list);
@ -948,6 +883,7 @@ png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers)
info_ptr->row_pointers = row_pointers;
if(row_pointers)
info_ptr->valid |= PNG_INFO_IDAT;
}
#endif
@ -958,6 +894,8 @@ png_set_compression_buffer_size(png_structp png_ptr, png_uint_32 size)
png_free(png_ptr, png_ptr->zbuf);
png_ptr->zbuf_size = (png_size_t)size;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size);
if(!png_ptr->zbuf)
png_error(png_ptr,"Unable to malloc zbuf");
png_ptr->zstream.next_out = png_ptr->zbuf;
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
}

113
pngtest.c
View File

@ -1,7 +1,7 @@
/* pngtest.c - a simple test program to test libpng
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -51,20 +51,16 @@
#endif
#if defined(PNG_NO_STDIO)
# if defined(_WIN32_WCE)
typedef HANDLE png_FILE_p;
# else
typedef FILE * png_FILE_p;
# endif
#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
#endif
#if !PNG_DEBUG
# define SINGLE_ROWBUF_ALLOC /* makes buffer overruns easier to nail */
#define PNG_DEBUG 0
#endif
/* Turn on CPU timing
@ -283,7 +279,7 @@ pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
if (check != length)
{
png_error(png_ptr, "Read Error!");
png_error(png_ptr, "Read Error");
}
}
#else
@ -488,15 +484,14 @@ png_debug_malloc(png_structp png_ptr, png_uint_32 size)
/* This calls the library allocator twice, once to get the requested
buffer and once to get a new free list entry. */
{
memory_infop pinfo = (memory_infop)png_malloc_default(png_ptr,
sizeof *pinfo);
memory_infop pinfo = png_malloc_default(png_ptr, sizeof *pinfo);
pinfo->size = size;
current_allocation += size;
total_allocation += size;
num_allocations ++;
if (current_allocation > maximum_allocation)
maximum_allocation = current_allocation;
pinfo->pointer = (png_voidp)png_malloc_default(png_ptr, size);
pinfo->pointer = png_malloc_default(png_ptr, size);
pinfo->next = pinformation;
pinformation = pinfo;
/* Make sure the caller isn't assuming zeroed memory. */
@ -538,7 +533,7 @@ png_debug_free(png_structp png_ptr, png_voidp ptr)
fprintf(STDERR, "Duplicate free of memory\n");
/* We must free the list element too, but first kill
the memory that is to be freed. */
png_memset(ptr, 0x55, pinfo->size);
memset(ptr, 0x55, pinfo->size);
png_free_default(png_ptr, pinfo);
pinfo=NULL;
break;
@ -569,17 +564,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
{
static png_FILE_p fpin;
static png_FILE_p fpout; /* "static" prevents setjmp corruption */
png_structp read_ptr;
png_infop read_info_ptr, end_info_ptr;
#ifdef PNG_WRITE_SUPPORTED
png_structp write_ptr;
png_infop write_info_ptr;
png_infop write_end_info_ptr;
#else
png_structp write_ptr = NULL;
png_infop write_info_ptr = NULL;
png_infop write_end_info_ptr = NULL;
#endif
png_structp read_ptr, write_ptr;
png_infop read_info_ptr, write_info_ptr, end_info_ptr, write_end_info_ptr;
png_bytep row_buf;
png_uint_32 y;
png_uint_32 width, height;
@ -634,7 +620,6 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error,
pngtest_warning);
#endif
#ifdef PNG_WRITE_SUPPORTED
#ifdef PNG_USER_MEM_SUPPORTED
write_ptr = png_create_write_struct_2(PNG_LIBPNG_VER_STRING, (png_voidp)NULL,
(png_error_ptr)NULL, (png_error_ptr)NULL, (png_voidp)NULL,
@ -646,14 +631,13 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
#if defined(PNG_NO_STDIO)
png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error,
pngtest_warning);
#endif
#endif
png_debug(0, "Allocating read_info, write_info and end_info structures\n");
read_info_ptr = png_create_info_struct(read_ptr);
end_info_ptr = png_create_info_struct(read_ptr);
#ifdef PNG_WRITE_SUPPORTED
write_info_ptr = png_create_info_struct(write_ptr);
end_info_ptr = png_create_info_struct(read_ptr);
write_end_info_ptr = png_create_info_struct(write_ptr);
#ifdef PNG_USER_MEM_SUPPORTED
#endif
#ifdef PNG_SETJMP_SUPPORTED
@ -666,10 +650,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
{
fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
#ifdef PNG_WRITE_SUPPORTED
png_destroy_info_struct(write_ptr, &write_end_info_ptr);
png_destroy_write_struct(&write_ptr, &write_info_ptr);
#endif
FCLOSE(fpin);
FCLOSE(fpout);
return (1);
@ -678,7 +660,6 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_memcpy(png_jmpbuf(read_ptr),jmpbuf,sizeof(jmp_buf));
#endif
#ifdef PNG_WRITE_SUPPORTED
png_debug(0, "Setting jmpbuf for write struct\n");
#ifdef USE_FAR_KEYWORD
if (setjmp(jmpbuf))
@ -689,9 +670,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
png_destroy_info_struct(write_ptr, &write_end_info_ptr);
#ifdef PNG_WRITE_SUPPORTED
png_destroy_write_struct(&write_ptr, &write_info_ptr);
#endif
FCLOSE(fpin);
FCLOSE(fpout);
return (1);
@ -699,38 +678,29 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
#ifdef USE_FAR_KEYWORD
png_memcpy(png_jmpbuf(write_ptr),jmpbuf,sizeof(jmp_buf));
#endif
#endif
#endif
png_debug(0, "Initializing input and output streams\n");
#if !defined(PNG_NO_STDIO)
png_init_io(read_ptr, fpin);
# ifdef PNG_WRITE_SUPPORTED
png_init_io(write_ptr, fpout);
# endif
#else
png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
# ifdef PNG_WRITE_SUPPORTED
png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data,
# if defined(PNG_WRITE_FLUSH_SUPPORTED)
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
pngtest_flush);
# else
#else
NULL);
# endif
# endif
#endif
#endif
if(status_dots_requested == 1)
{
#ifdef PNG_WRITE_SUPPORTED
png_set_write_status_fn(write_ptr, write_row_callback);
#endif
png_set_read_status_fn(read_ptr, read_row_callback);
}
else
{
#ifdef PNG_WRITE_SUPPORTED
png_set_write_status_fn(write_ptr, NULL);
#endif
png_set_read_status_fn(read_ptr, NULL);
}
@ -1014,29 +984,32 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
#endif
#ifdef PNG_WRITE_SUPPORTED
png_debug(0, "\nWriting info struct\n");
/* If we wanted, we could write info in two steps:
png_write_info_before_PLTE(write_ptr, write_info_ptr);
*/
png_write_info(write_ptr, write_info_ptr);
#endif
#ifdef SINGLE_ROWBUF_ALLOC
png_debug(0, "\nAllocating row buffer...");
png_debug(0, "\nAllocating row buffer \n");
row_buf = (png_bytep)png_malloc(read_ptr,
png_get_rowbytes(read_ptr, read_info_ptr));
png_debug1(0, "0x%08lx\n\n", (unsigned long)row_buf);
#endif /* SINGLE_ROWBUF_ALLOC */
if (row_buf == NULL)
{
fprintf(STDERR, "No memory to allocate row buffer\n");
png_destroy_read_struct(&read_ptr, &read_info_ptr, (png_infopp)NULL);
png_destroy_info_struct(write_ptr, &write_end_info_ptr);
png_destroy_write_struct(&write_ptr, &write_info_ptr);
FCLOSE(fpin);
FCLOSE(fpout);
return (1);
}
png_debug(0, "Writing row data\n");
#if defined(PNG_READ_INTERLACING_SUPPORTED) || \
defined(PNG_WRITE_INTERLACING_SUPPORTED)
num_pass = png_set_interlace_handling(read_ptr);
# ifdef PNG_WRITE_SUPPORTED
png_set_interlace_handling(write_ptr);
# endif
#else
num_pass=1;
#endif
@ -1051,16 +1024,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_debug1(0, "Writing row data for pass %d\n",pass);
for (y = 0; y < height; y++)
{
#ifndef SINGLE_ROWBUF_ALLOC
png_debug2(0, "\nAllocating row buffer (pass %d, y = %ld)...", pass,y);
row_buf = (png_bytep)png_malloc(read_ptr,
png_get_rowbytes(read_ptr, read_info_ptr));
png_debug2(0, "0x%08lx (%ld bytes)\n", (unsigned long)row_buf,
png_get_rowbytes(read_ptr, read_info_ptr));
#endif /* !SINGLE_ROWBUF_ALLOC */
png_read_rows(read_ptr, (png_bytepp)&row_buf, (png_bytepp)NULL, 1);
#ifdef PNG_WRITE_SUPPORTED
#ifdef PNGTEST_TIMING
t_stop = (float)clock();
t_decode += (t_stop - t_start);
@ -1072,12 +1036,6 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
t_encode += (t_stop - t_start);
t_start = t_stop;
#endif
#endif /* PNG_WRITE_SUPPORTED */
#ifndef SINGLE_ROWBUF_ALLOC
png_debug2(0, "Freeing row buffer (pass %d, y = %ld)\n\n", pass, y);
png_free(read_ptr, row_buf);
#endif /* !SINGLE_ROWBUF_ALLOC */
}
}
@ -1140,9 +1098,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#endif
#ifdef PNG_WRITE_SUPPORTED
png_write_end(write_ptr, write_end_info_ptr);
#endif
#ifdef PNG_EASY_ACCESS_SUPPORTED
if(verbose)
@ -1156,20 +1112,11 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
#endif
png_debug(0, "Destroying data structs\n");
#ifdef SINGLE_ROWBUF_ALLOC
png_debug(1, "destroying row_buf for read_ptr\n");
png_free(read_ptr, row_buf);
row_buf=NULL;
#endif /* SINGLE_ROWBUF_ALLOC */
png_debug(1, "destroying read_ptr, read_info_ptr, end_info_ptr\n");
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
#ifdef PNG_WRITE_SUPPORTED
png_debug(1, "destroying write_end_info_ptr\n");
png_destroy_info_struct(write_ptr, &write_end_info_ptr);
png_debug(1, "destroying write_ptr, write_info_ptr\n");
png_destroy_write_struct(&write_ptr, &write_info_ptr);
#endif
png_debug(0, "Destruction complete.\n");
FCLOSE(fpin);
FCLOSE(fpout);
@ -1511,4 +1458,4 @@ main(int argc, char *argv[])
}
/* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_0_12beta1 your_png_h_is_not_version_1_0_12beta1;
typedef version_1_2_0beta1 your_png_h_is_not_version_1_2_0beta1;

8
pngtrans.c
View File

@ -1,7 +1,7 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -392,12 +392,11 @@ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags)
sp += 8; dp += 6;
for (i = 1; i < row_width; i++)
{
/* This could be (although png_memcpy is probably slower):
/* This could be (although memcpy is probably slower):
png_memcpy(dp, sp, 6);
sp += 8;
dp += 6;
*/
*dp++ = *sp++;
*dp++ = *sp++;
*dp++ = *sp++;
@ -412,12 +411,11 @@ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags)
/* This converts from XXRRGGBB or AARRGGBB to RRGGBB */
for (i = 0; i < row_width; i++)
{
/* This could be (although png_memcpy is probably slower):
/* This could be (although memcpy is probably slower):
png_memcpy(dp, sp, 6);
sp += 8;
dp += 6;
*/
sp+=2;
*dp++ = *sp++;
*dp++ = *sp++;

80
pngvcrd.c
View File

@ -2,14 +2,14 @@
*
* For Intel x86 CPU and Microsoft Visual C++ compiler
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 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
@ -19,6 +19,8 @@
*
* [png_read_filter_row_mmx_avg() bpp == 2 bugfix, GRR 20000916]
*
* [runtime MMX configuration, GRR 20010102]
*
*/
#define PNG_INTERNAL
@ -110,6 +112,8 @@ 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) {
/* this should have happened in png_init_mmx_flags() already */
png_warning(png_ptr, "asm_flags may not have been initialized");
png_mmx_support();
}
@ -300,7 +304,8 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
__int64 mask0=0x0102040810204080;
if ( mmx_supported )
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
/* && mmx_supported */ )
{
srcptr = png_ptr->row_buf + 1;
dstptr = row;
@ -382,8 +387,6 @@ end8:
incr1 = (disp)*pixel_bytes;
for (i = initial_val; i < final_val; i += incr1)
{
if (pixel_bytes > (png_size_t)(final_val-i))
pixel_bytes = (png_size_t)(final_val-i);
png_memcpy(dstptr, srcptr, pixel_bytes);
srcptr += incr1;
dstptr += incr1;
@ -402,7 +405,8 @@ end8:
__int64 mask1=0x0101020204040808,
mask0=0x1010202040408080;
if ( mmx_supported )
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
/* && mmx_supported */ )
{
srcptr = png_ptr->row_buf + 1;
dstptr = row;
@ -495,8 +499,6 @@ end16:
incr1 = (disp)*pixel_bytes;
for (i = initial_val; i < final_val; i += incr1)
{
if (pixel_bytes > (png_size_t)(final_val-i))
pixel_bytes = (png_size_t)(final_val-i);
png_memcpy(dstptr, srcptr, pixel_bytes);
srcptr += incr1;
dstptr += incr1;
@ -524,7 +526,8 @@ end16:
len = (png_ptr->width)&~7;
diff = (png_ptr->width)&7;
if ( mmx_supported )
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
/* && mmx_supported */ )
{
_asm
{
@ -627,8 +630,6 @@ end24:
incr1 = (disp)*pixel_bytes;
for (i = initial_val; i < final_val; i += incr1)
{
if (pixel_bytes > (png_size_t)(final_val-i))
pixel_bytes = (png_size_t)(final_val-i);
png_memcpy(dstptr, srcptr, pixel_bytes);
srcptr += incr1;
dstptr += incr1;
@ -657,7 +658,8 @@ end24:
len = (png_ptr->width)&~7;
diff = (png_ptr->width)&7;
if ( mmx_supported )
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
/* && mmx_supported */ )
{
_asm
{
@ -768,8 +770,6 @@ end32:
incr1 = (disp)*pixel_bytes;
for (i = initial_val; i < final_val; i += incr1)
{
if (pixel_bytes > (png_size_t)(final_val-i))
pixel_bytes = (png_size_t)(final_val-i);
png_memcpy(dstptr, srcptr, pixel_bytes);
srcptr += incr1;
dstptr += incr1;
@ -793,7 +793,8 @@ end32:
mask1=0x2020202040404040,
mask0=0x4040808080808080;
if ( mmx_supported )
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
/* && mmx_supported */ )
{
srcptr = png_ptr->row_buf + 1;
dstptr = row;
@ -927,8 +928,6 @@ end48:
incr1 = (disp)*pixel_bytes;
for (i = initial_val; i < final_val; i += incr1)
{
if (pixel_bytes > (png_size_t)(final_val-i))
pixel_bytes = (png_size_t)(final_val-i);
png_memcpy(dstptr, srcptr, pixel_bytes);
srcptr += incr1;
dstptr += incr1;
@ -957,8 +956,6 @@ end48:
incr1 = (disp)*pixel_bytes;
for (i = initial_val; i < final_val; i += incr1)
{
if (pixel_bytes > (png_size_t)(final_val-i))
pixel_bytes = (png_size_t)(final_val-i);
png_memcpy(dp, sptr, pixel_bytes);
sptr += incr1;
dp += incr1;
@ -987,6 +984,8 @@ png_do_read_interlace(png_structp png_ptr)
png_debug(1,"in png_do_read_interlace\n");
if (mmx_supported == 2) {
/* this should have happened in png_init_mmx_flags() already */
png_warning(png_ptr, "asm_flags may not have been initialized");
png_mmx_support();
}
@ -1187,7 +1186,8 @@ png_do_read_interlace(png_structp png_ptr)
// NOTE: there is NO MMX code for 48-bit and 64-bit images
// use MMX routine if machine supports it
if ( mmx_supported )
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_INTERLACE)
/* && mmx_supported */ )
{
if (pixel_bytes == 3)
{
@ -1777,7 +1777,7 @@ loop4_pass4:
} /* end of mmx_supported */
else /* MMX not supported: use modified C code - takes advantage
* of inlining of png_memcpy for a constant */
* of inlining of memcpy for a constant */
{
if (pixel_bytes == 1)
{
@ -3649,6 +3649,8 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
#endif
if (mmx_supported == 2) {
/* this should have happened in png_init_mmx_flags() already */
png_warning(png_ptr, "asm_flags may not have been initialized");
png_mmx_support();
}
@ -3658,13 +3660,17 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
{
case 0: sprintf(filnm, "none");
break;
case 1: sprintf(filnm, "sub-%s", "MMX");
case 1: sprintf(filnm, "sub-%s",
(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_SUB)? "MMX" : "x86");
break;
case 2: sprintf(filnm, "up-%s", "MMX");
case 2: sprintf(filnm, "up-%s",
(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_UP)? "MMX" : "x86");
break;
case 3: sprintf(filnm, "avg-%s", "MMX");
case 3: sprintf(filnm, "avg-%s",
(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_AVG)? "MMX" : "x86");
break;
case 4: sprintf(filnm, "Paeth-%s", "MMX");
case 4: sprintf(filnm, "Paeth-%s",
(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH)? "MMX":"x86");
break;
default: sprintf(filnm, "unknw");
break;
@ -3682,9 +3688,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
case PNG_FILTER_VALUE_SUB:
{
if (
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_SUB) &&
(row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
(row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
{
png_read_filter_row_mmx_sub(row_info, row);
}
@ -3707,9 +3713,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
case PNG_FILTER_VALUE_UP:
{
if (
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_UP) &&
(row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
(row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
{
png_read_filter_row_mmx_up(row_info, row, prev_row);
}
@ -3731,9 +3737,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
case PNG_FILTER_VALUE_AVG:
{
if (
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_AVG) &&
(row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
(row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
{
png_read_filter_row_mmx_avg(row_info, row, prev_row);
}
@ -3765,9 +3771,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
case PNG_FILTER_VALUE_PAETH:
{
if (
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH) &&
(row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
(row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
{
png_read_filter_row_mmx_paeth(row_info, row, prev_row);
}

4
pngwio.c
View File

@ -1,7 +1,7 @@
/* pngwio.c - functions for data output
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -17,7 +17,6 @@
#define PNG_INTERNAL
#include "png.h"
#ifdef PNG_WRITE_SUPPORTED
/* Write the data to whatever output you are using. The default routine
writes to a file pointer. Note that this routine sometimes gets called
@ -225,4 +224,3 @@ void *png_far_to_near(png_structp png_ptr,png_voidp ptr, int check)
}
# endif
# endif
#endif /* PNG_WRITE_SUPPORTED */

86
pngwrite.c
View File

@ -1,7 +1,7 @@
/* pngwrite.c - general routines to write a PNG file
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -444,7 +444,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
png_debug(1, "in png_create_write_struct\n");
#ifdef PNG_USER_MEM_SUPPORTED
if ((png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
(png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr)) == NULL)
(png_malloc_ptr)malloc_fn)) == NULL)
#else
if ((png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG)) == NULL)
#endif /* PNG_USER_MEM_SUPPORTED */
@ -452,6 +452,10 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
return ((png_structp)NULL);
}
#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
png_init_mmx_flags(png_ptr); /* 1.2.0 addition */
#endif
#ifdef PNG_SETJMP_SUPPORTED
#ifdef USE_FAR_KEYWORD
if (setjmp(jmpbuf))
@ -489,7 +493,6 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
* only check the first digit.
*/
if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] ||
(user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
(user_png_ver[0] == '0' && user_png_ver[2] < '9'))
{
png_error(png_ptr,
@ -497,17 +500,15 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
}
/* Libpng 1.0.6 was not binary compatible, due to insertion of the
info_ptr->free_me member. Libpng-1.0.1 and earlier were not
compatible due to insertion of the user transform function. Note
to maintainer: this test can be removed from version 1.2.0 and
beyond because the previous test would have already rejected it. */
info_ptr->free_me member. Note to maintainer: this test can be
removed from version 2.0.0 and beyond because the previous test
would have already rejected it. */
if (user_png_ver[0] == '1' && user_png_ver[2] == '0' &&
(user_png_ver[4] < '2' || user_png_ver[4] == '6') &&
user_png_ver[5] == '\0')
if (user_png_ver[4] == '6' && user_png_ver[2] == '0' &&
user_png_ver[0] == '1' && user_png_ver[5] == '\0')
{
png_error(png_ptr,
"Application must be recompiled; versions <= 1.0.6 were incompatible");
"Application must be recompiled; version 1.0.6 was incompatible");
}
}
@ -532,36 +533,13 @@ void PNGAPI
png_write_init(png_structp png_ptr)
{
/* We only come here via pre-1.0.7-compiled applications */
png_write_init_2(png_ptr, "1.0.0", 0, 0);
png_write_init_2(png_ptr, "1.0.0", 10000, 10000);
}
#undef png_write_init_2
void PNGAPI
png_write_init_2(png_structp png_ptr, png_const_charp user_png_ver,
png_size_t png_struct_size, png_size_t png_info_size)
{
/* We only come here via pre-1.0.12-compiled applications */
if(sizeof(png_struct) > png_struct_size)
{
png_ptr->error_fn=(png_error_ptr)NULL;
png_error(png_ptr,
"The png struct allocated by the application is too small.");
}
if(sizeof(png_info) > png_info_size)
{
png_ptr->error_fn=(png_error_ptr)NULL;
png_error(png_ptr,
"The info struct allocated by the application is too small.");
}
png_write_init_3(&png_ptr, user_png_ver, png_struct_size);
}
void PNGAPI
png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
png_size_t png_struct_size)
{
png_structp png_ptr=*ptr_ptr;
#ifdef PNG_SETJMP_SUPPORTED
jmp_buf tmp_jmp; /* to save current jump buffer */
#endif
@ -573,42 +551,45 @@ png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
#ifdef PNG_LEGACY_SUPPORTED
png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
#else
png_ptr->warning_fn=(png_error_ptr)NULL;
png_warning(png_ptr,
"Application uses deprecated png_write_init() and should be recompiled.");
break;
png_ptr->error_fn=(png_error_ptr)NULL;
png_error(png_ptr,
"Application uses deprecated png_write_init() and must be recompiled.");
#endif
}
} while (png_libpng_ver[i++]);
png_debug(1, "in png_write_init_3\n");
if (sizeof(png_struct) > png_struct_size ||
sizeof(png_info) > png_info_size)
{
png_ptr->error_fn=(png_error_ptr)NULL;
png_error(png_ptr,
"Application and library have different sized structs. Please recompile.");
}
png_debug(1, "in png_write_init_2\n");
#ifdef PNG_SETJMP_SUPPORTED
/* save jump buffer and error functions */
png_memcpy(tmp_jmp, png_ptr->jmpbuf, sizeof (jmp_buf));
#endif
if (sizeof(png_struct) > png_struct_size)
{
png_destroy_struct(png_ptr);
png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG);
*ptr_ptr = png_ptr;
}
/* reset all variables to 0 */
png_memset(png_ptr, 0, sizeof (png_struct));
#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
png_init_mmx_flags(png_ptr); /* 1.2.0 addition */
#endif
#ifdef PNG_SETJMP_SUPPORTED
/* restore jump buffer */
png_memcpy(png_ptr->jmpbuf, tmp_jmp, sizeof (jmp_buf));
#endif
png_set_write_fn(png_ptr, NULL, NULL, NULL);
/* initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
png_set_write_fn(png_ptr, NULL, NULL, NULL);
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
png_set_filter_heuristics(png_ptr, PNG_FILTER_HEURISTIC_DEFAULT,
@ -903,7 +884,6 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
png_infop info_ptr = NULL;
#ifdef PNG_USER_MEM_SUPPORTED
png_free_ptr free_fn = NULL;
png_voidp mem_ptr = NULL;
#endif
png_debug(1, "in png_destroy_write_struct\n");
@ -932,8 +912,7 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
#endif
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)info_ptr, (png_free_ptr)free_fn,
(png_voidp)mem_ptr);
png_destroy_struct_2((png_voidp)info_ptr, free_fn);
#else
png_destroy_struct((png_voidp)info_ptr);
#endif
@ -944,8 +923,7 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
{
png_write_destroy(png_ptr);
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)png_ptr, (png_free_ptr)free_fn,
(png_voidp)mem_ptr);
png_destroy_struct_2((png_voidp)png_ptr, free_fn);
#else
png_destroy_struct((png_voidp)png_ptr);
#endif

4
pngwtran.c
View File

@ -1,7 +1,7 @@
/* pngwtran.c - transforms the data in a row for PNG writers
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -10,7 +10,6 @@
#define PNG_INTERNAL
#include "png.h"
#ifdef PNG_WRITE_SUPPORTED
/* Transform the data according to the user's wishes. The order of
* transformations is significant.
@ -560,4 +559,3 @@ png_do_write_intrapixel(png_row_infop row_info, png_bytep row)
}
}
#endif /* PNG_MNG_FEATURES_SUPPORTED */
#endif /* PNG_WRITE_SUPPORTED */

67
pngwutil.c
View File

@ -1,7 +1,7 @@
/* pngwutil.c - utilities to write a PNG file
*
* libpng 1.0.12beta1 - May 14, 2001
* libpng 1.2.0beta1 - May 6, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -10,7 +10,6 @@
#define PNG_INTERNAL
#include "png.h"
#ifdef PNG_WRITE_SUPPORTED
/* Place a 32-bit number into a buffer in PNG byte order. We work
* with unsigned numbers for convenience, although one supported
@ -235,8 +234,8 @@ png_text_compress(png_structp png_ptr,
old_ptr = comp->output_ptr;
comp->output_ptr = (png_charpp)png_malloc(png_ptr,
(png_uint_32)(comp->max_output_ptr * sizeof (png_charpp)));
png_memcpy(comp->output_ptr, old_ptr, old_max
* sizeof (png_charp));
png_memcpy(comp->output_ptr, old_ptr,
old_max * sizeof (png_charp));
png_free(png_ptr, old_ptr);
}
else
@ -285,7 +284,7 @@ png_text_compress(png_structp png_ptr,
comp->output_ptr = (png_charpp)png_malloc(png_ptr,
(png_uint_32)(comp->max_output_ptr * sizeof (png_charpp)));
png_memcpy(comp->output_ptr, old_ptr,
old_max * sizeof (png_charp));
old_max * sizeof (png_charp));
png_free(png_ptr, old_ptr);
}
else
@ -435,7 +434,7 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
#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 ||
color_type == PNG_COLOR_TYPE_RGB_ALPHA) &&
(filter_type == PNG_INTRAPIXEL_DIFFERENCING)) &&
#endif
@ -460,9 +459,7 @@ 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;
#if defined(PNG_MNG_FEATURES_SUPPORTED)
png_ptr->filter_type = (png_byte)filter_type;
#endif
png_ptr->width = width;
png_ptr->height = height;
@ -537,28 +534,20 @@ png_write_PLTE(png_structp png_ptr, png_colorp palette, png_uint_32 num_pal)
png_debug(1, "in png_write_PLTE\n");
if ((
#if defined(PNG_MNG_FEATURES_SUPPORTED) || \
defined(PNG_WRITE_EMPTY_PLTE_PERMITTED)
#if defined(PNG_MNG_FEATURES_SUPPORTED)
!(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) &&
#endif
num_pal == 0) || num_pal > 256)
{
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
png_error(png_ptr, "Invalid number of colors in palette");
}
else
{
png_warning(png_ptr, "Invalid number of colors in palette");
return;
}
}
if (!(png_ptr->color_type&PNG_COLOR_MASK_COLOR))
{
png_warning(png_ptr,
"Ignoring request to write a PLTE chunk in grayscale PNG");
return;
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
png_error(png_ptr, "Invalid number of colors in palette");
}
else
{
png_warning(png_ptr, "Invalid number of colors in palette");
return;
}
}
png_ptr->num_palette = (png_uint_16)num_pal;
@ -739,7 +728,7 @@ png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette)
}
/* make sure we include the NULL after the name */
png_write_chunk_start(png_ptr, (png_bytep)png_sPLT,
png_write_chunk_start(png_ptr, (png_bytep) png_sPLT,
(png_uint_32)(name_len + 2 + palette_size));
png_write_chunk_data(png_ptr, (png_bytep)new_name, name_len + 1);
png_write_chunk_data(png_ptr, (png_bytep)&spalette->depth, 1);
@ -1028,8 +1017,7 @@ png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type)
if (color_type == PNG_COLOR_TYPE_PALETTE)
{
if (
#if defined(PNG_MNG_FEATURES_SUPPORTED) || \
defined(PNG_WRITE_EMPTY_PLTE_PERMITTED)
#if defined(PNG_MNG_FEATURES_SUPPORTED)
(png_ptr->num_palette ||
(!(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE))) &&
#endif
@ -1426,9 +1414,9 @@ png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0,
png_warning(png_ptr, "Unrecognized equation type for pCAL chunk");
purpose_len = png_check_keyword(png_ptr, purpose, &new_purpose) + 1;
png_debug1(3, "pCAL purpose length = %d\n", (int)purpose_len);
png_debug1(3, "pCAL purpose length = %d\n", purpose_len);
units_len = png_strlen(units) + (nparams == 0 ? 0 : 1);
png_debug1(3, "pCAL units length = %d\n", (int)units_len);
png_debug1(3, "pCAL units length = %d\n", units_len);
total_len = purpose_len + units_len + 10;
params_len = (png_uint_32p)png_malloc(png_ptr, (png_uint_32)(nparams
@ -1443,7 +1431,7 @@ png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0,
total_len += (png_size_t)params_len[i];
}
png_debug1(3, "pCAL total length = %d\n", (int)total_len);
png_debug1(3, "pCAL total length = %d\n", total_len);
png_write_chunk_start(png_ptr, (png_bytep)png_pCAL, (png_uint_32)total_len);
png_write_chunk_data(png_ptr, (png_bytep)new_purpose, purpose_len);
png_save_int_32(buf, X0);
@ -1495,11 +1483,11 @@ png_write_sCAL(png_structp png_ptr, int unit, double width,double height)
#endif
total_len = 1 + png_strlen(wbuf)+1 + png_strlen(hbuf);
png_debug1(3, "sCAL total length = %d\n", (int)total_len);
png_debug1(3, "sCAL total length = %d\n", total_len);
png_write_chunk_start(png_ptr, (png_bytep)png_sCAL, (png_uint_32)total_len);
png_write_chunk_data(png_ptr, (png_bytep)&unit, 1);
png_write_chunk_data(png_ptr, (png_bytep)wbuf, png_strlen(wbuf)+1);
png_write_chunk_data(png_ptr, (png_bytep)hbuf, png_strlen(hbuf));
png_write_chunk_data(png_ptr, (png_bytep)wbuf, strlen(wbuf)+1);
png_write_chunk_data(png_ptr, (png_bytep)hbuf, strlen(hbuf));
png_write_chunk_end(png_ptr);
}
@ -1517,15 +1505,15 @@ png_write_sCAL_s(png_structp png_ptr, int unit, png_charp width,
png_debug(1, "in png_write_sCAL_s\n");
png_strcpy(wbuf,(const char *)width);
png_strcpy(hbuf,(const char *)height);
strcpy(wbuf,(const char *)width);
strcpy(hbuf,(const char *)height);
total_len = 1 + png_strlen(wbuf)+1 + png_strlen(hbuf);
png_debug1(3, "sCAL total length = %d\n", total_len);
png_write_chunk_start(png_ptr, (png_bytep)png_sCAL, (png_uint_32)total_len);
png_write_chunk_data(png_ptr, (png_bytep)&unit, 1);
png_write_chunk_data(png_ptr, (png_bytep)wbuf, png_strlen(wbuf)+1);
png_write_chunk_data(png_ptr, (png_bytep)hbuf, png_strlen(hbuf));
png_write_chunk_data(png_ptr, (png_bytep)wbuf, strlen(wbuf)+1);
png_write_chunk_data(png_ptr, (png_bytep)hbuf, strlen(hbuf));
png_write_chunk_end(png_ptr);
}
@ -2643,4 +2631,3 @@ png_write_filtered_row(png_structp png_ptr, png_bytep filtered_row)
}
#endif
}
#endif /* PNG_WRITE_SUPPORTED */

2
projects/msvc/README.txt
View File

@ -1,5 +1,5 @@
Microsoft Developer Studio Build File, Format Version 6.00 for
libpng 1.0.12beta1 (May 14, 2001) and zlib
libpng 1.2.0beta1 (May 6, 2001) and zlib
Copyright (C) 2000 Simon-Pierre Cadieux
For conditions of distribution and use, see copyright notice in png.h

41
projects/msvc/png32ms.def
View File

@ -6,7 +6,7 @@ LIBRARY
DESCRIPTION "PNG image compression library for Windows"
EXPORTS
;Version 1.0.12beta1
;Version 1.2.0beta1
png_build_grayscale_palette @1
png_check_sig @2
png_chunk_error @3
@ -175,7 +175,6 @@ EXPORTS
png_write_png @163
png_write_row @164
png_write_rows @165
; png_read_init_2 and png_write_init_2 are deprecated.
png_read_init_2 @166
png_write_init_2 @167
png_access_version_number @168
@ -184,30 +183,14 @@ EXPORTS
png_init_io @171
png_convert_to_rfc1123 @172
png_set_invalid @173
; Added at version 1.0.12
; For compatiblity with 1.0.7-1.0.11
png_info_init @174
png_read_init_3 @175
png_write_init_3 @176
png_info_init_3 @177
png_destroy_struct @178
; To be added at version 1.2.0
; For use with PNG_USER_MEM_SUPPORTED
; png_destroy_struct_2 @179
; png_create_read_struct_2 @180
; png_create_write_struct_2 @181
; png_malloc_default @182
; png_free_default @183
; MNG features
; png_permit_mng_features @184
; MMX support
; png_mmx_support @185
; png_get_mmx_flagmask @186
; png_get_asm_flagmask @187
; png_get_asm_flags @188
; png_get_mmx_bitdepth_threshold @189
; png_get_mmx_rowbytes_threshold @190
; png_set_asm_flags @191
; png_init_mmx_flags @192
; Strip error numbers
; png_set_strip_error_numbers @193
; Added at version 1.2.0
png_permit_mng_features @174
png_mmx_support @175
png_get_mmx_flagmask @176
png_get_asm_flagmask @177
png_get_asm_flags @178
png_get_mmx_bitdepth_threshold @179
png_get_mmx_rowbytes_threshold @180
png_set_asm_flags @181
png_init_mmx_flags @182
png_set_strip_error_numbers @183

8
projects/wince/READMEE.WCE
View File

@ -8,9 +8,9 @@ libpng for WindowsCE Rel.1.0
Introduction
============
This is libpng 1.0.12beta1 ported to WindowsCE 2.0 and 2.11.
libpng 1.0.12beta1 is a PNG reference library.
See README, a document of original libpng 1.0.12beta1.
This is libpng 1.2.0beta1 ported to WindowsCE 2.0 and 2.11.
libpng 1.2.0beta1 is a PNG reference library.
See README, a document of original libpng 1.2.0beta1.
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 1.0.12beta1, for conditions
See README and LICENSE, documents of original libpng 1.2.0beta1, 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 1.0.12beta1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 1.2.0beta1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

44
projects/wince/png32ce.def
View File

@ -5,7 +5,7 @@
LIBRARY lpngce
EXPORTS
;Version 1.0.12beta1
;Version 1.2.0beta1
png_build_grayscale_palette @1
png_check_sig @2
png_chunk_error @3
@ -76,7 +76,6 @@ EXPORTS
png_malloc @68
png_memcpy_check @69
png_memset_check @70
; png_permit_empty_plte is deprecated
png_permit_empty_plte @71
png_process_data @72
png_progressive_combine_row @73
@ -174,39 +173,22 @@ EXPORTS
png_write_png @163
png_write_row @164
png_write_rows @165
; png_read_init_2 and png_write_init_2 are deprecated.
png_read_init_2 @166
png_write_init_2 @167
png_access_version_number @168
; png_sig_bytes @169
; png_libpng_ver @170
png_libpng_ver @170
png_init_io @171
png_convert_to_rfc1123 @172
png_set_invalid @173
; Added at version 1.0.12
; For compatiblity with 1.0.7-1.0.11
png_info_init @174
png_read_init_3 @175
png_write_init_3 @176
png_info_init_3 @177
png_destroy_struct @178
; To be added at version 1.2.0
; For use with PNG_USER_MEM_SUPPORTED
; png_destroy_struct_2 @179
; png_create_read_struct_2 @180
; png_create_write_struct_2 @181
; png_malloc_default @182
; png_free_default @183
; MNG features
; png_permit_mng_features @184
; MMX support
; png_mmx_support @185
; png_get_mmx_flagmask @186
; png_get_asm_flagmask @187
; png_get_asm_flags @188
; png_get_mmx_bitdepth_threshold @189
; png_get_mmx_rowbytes_threshold @190
; png_set_asm_flags @191
; png_init_mmx_flags @192
; Strip error numbers
; png_set_strip_error_numbers @193
; Added at version 1.2.0
png_permit_mng_features @174
png_mmx_support @175
png_get_mmx_flagmask @176
png_get_asm_flagmask @177
png_get_asm_flags @178
png_get_mmx_bitdepth_threshold @179
png_get_mmx_rowbytes_threshold @180
png_set_asm_flags @181
png_init_mmx_flags @182
png_set_strip_error_numbers @183

2
scripts/makefile.aix
View File

@ -18,7 +18,7 @@ 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 = 1.0.12beta1
PNGMIN = 1.2.0beta1
PNGVER = $(PNGMAJ).$(PNGMIN)
prefix=/usr/local

2
scripts/makefile.beos
View File

@ -13,7 +13,7 @@ ZLIBINC=/usr/local/include
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it.
PNGMAJ = 2
PNGMIN = 1.0.12beta1
PNGMIN = 1.2.0beta1
PNGVER = $(PNGMAJ).$(PNGMIN)
ALIGN=

6
scripts/makefile.cygwin
View File

@ -39,9 +39,9 @@ CFLAGS=-I$(ZLIBINC) -Wall -O3 $(ALIGN) -funroll-loops \
# have to change it.
PNGMAJ = 2
#PNGDLL = $2# msvc
PNGDLL = 2# cygwin 1.0.12beta1
PNGMIN = 1.0.12beta1
PNGMIN_BASE = 1.0.12
PNGDLL = 2# cygwin 1.2.0beta1
PNGMIN = 1.2.0beta1
PNGMIN_BASE = 1.2.0
PNGVER = $(PNGMAJ).$(PNGMIN)
SHAREDLIB=cygpng$(PNGDLL).dll

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 = 1.0.12beta1
PNGMIN = 1.2.0beta1
PNGVER = $(PNGMAJ).$(PNGMIN)
CC=cc

2
scripts/makefile.gcmmx
View File

@ -51,7 +51,7 @@ RANLIB=ranlib
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it.
PNGMAJ = 2
PNGMIN = 1.0.12beta1
PNGMIN = 1.2.0beta1
PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include

2
scripts/makefile.hpgcc
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 = 1.0.12beta1
PNGMIN = 1.2.0beta1
PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include

2
scripts/makefile.hpux
View File

@ -19,7 +19,7 @@ RANLIB=ranlib
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it.
PNGMAJ = 2
PNGMIN = 1.0.12beta1
PNGMIN = 1.2.0beta1
PNGVER = $(PNGMAJ).$(PNGMIN)
# where make install puts libpng.a and png.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 = 1.0.12beta1
PNGMIN = 1.2.0beta1
PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include

2
scripts/makefile.netbsd
View File

@ -11,7 +11,7 @@ INCSDIR=${LOCALBASE}/include
LIB=png
SHLIB_MAJOR= 2
SHLIB_MINOR= 1.0.12beta1
SHLIB_MINOR= 1.2.0beta1
SRCS= pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c

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 = 1.0.12beta1
PNGMIN = 1.2.0beta1
PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include

4
scripts/makefile.sggcc
View File

@ -19,8 +19,8 @@ CFLAGS=-I$(ZLIBINC) -O2 $(WARNMORE) -fPIC -mabi=n32
LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
LDSHARED=gcc -shared
VER=1.0.12beta1
LIBS=libpng.so.1.0.12beta1
VER=1.2.0beta1
LIBS=libpng.so.1.2.0beta1
SHAREDLIB=libpng.so
libdir=$(prefix)/lib32

2
scripts/makefile.sgi
View File

@ -25,7 +25,7 @@ CFLAGS=-I$(ZLIBINC) -O $(WARNMORE) -DPNG_USE_PNGGCCRD -DPNG_NO_ASSEMBLER_CODE
LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
LDSHARED=cc -shared
VER=1.0.12beta1
VER=1.2.0beta1
SONUM=2
SHAREDLIB=libpng.so
libdir=$(prefix)

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 = 1.0.12beta1
PNGMIN = 1.2.0beta1
PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include

4
scripts/pngdef.pas
View File

@ -7,8 +7,8 @@ unit pngdef;
interface
const
PNG_LIBPNG_VER_STRING = '1.0.12beta1';
PNG_LIBPNG_VER = 10012;
PNG_LIBPNG_VER_STRING = '1.2.0beta1';
PNG_LIBPNG_VER = 10200;
type
png_uint_32 = Cardinal;

15
scripts/pngos2.def
View File

@ -2,7 +2,7 @@
; PNG.LIB module definition file for OS/2
;----------------------------------------
; Version 1.0.12beta1
; Version 1.2.0beta1
LIBRARY PNG
DESCRIPTION "PNG image compression library for OS/2"
@ -187,8 +187,17 @@ EXPORTS
;To be added at version 1.2.0
; png_permit_mng_features
;To be added at version 1.2.0
; png_mmx_support
; Added at version 1.2.0:
png_mmx_support
png_permit_empty_plte
png_permit_mng_features
png_get_mmx_flagmask
png_get_asm_flagmask
png_get_asm_flags
png_get_mmx_bitdepth_threshold
png_get_mmx_rowbytes_threshold
png_set_asm_flags
png_init_mmx_flags
; These are not present when libpng is compiled with PNG_NO_GLOBAL_ARRAYS
png_libpng_ver